• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a flow rate measuring device (1) for a fire extinguishing device (2) for detecting the flow rate of extinguishing agent or fresh water, comprising a control element (9) arranged on a control rod (11), which control element (9) has a substantially conical shape Section (22). Furthermore, a housing (25) surrounding the control element (9), the control element (9) being accommodated displaceably in the housing (25) in the axial direction (31) of the control rod (11). Furthermore, the control element (9) has a cylindrical partial section (23) which, viewed in the flow direction (15) of the fluid to be measured, is arranged downstream of the conical section (22). In which cylindrical subsection (23) of the control element (9) further at least one recess (27) is provided, which surrounds the lateral surfaces (28, 29) of the conical section (22) and the cylindrical subsection (23) of the control element (23). 9) interrupts.
    公开号:AT514927A4
    申请号:T50809/2013
    申请日:2013-12-09
    公开日:2015-05-15
    发明作者:Hannes Dipl Ing Hammer
    申请人:Rosenbauer Int Ag；
    IPC主号:
    专利说明:

    The invention relates to a flow rate measuring device for a fire extinguishing device and to a fire extinguishing device equipped with this flow rate measuring device, as specified in claims 1 and 15.
    From the prior art, a flow rate measuring device is known, which operates as follows. During the flow process of extinguishing agent in the direction of extinguishing agent discharge, the extinguishing agent passes through a control element. The control element is a frusto-conical element, which bears against a control seat designed as a cylindrical bore. To guide the control element this is firmly connected to a control rod. By a spring element, the control element is pressed onto the control element seat so that a contact surface between control element and control element seat results. This contact surface is preferably formed completely with the same cross-sectional area. By the control of the pressure outlet is separated to Löschmittel¬ derivative. If now extinguishing agent promoted, so the pressure increases on the sharp side of the control. As a result of this increased pressure in relation to the extinguishing agent discharge, the control element is moved in the direction of flow by the extinguishing medium flowing through. Here, the control is lifted from its control seat, so that an annular cross-section is provided, through which annular cross-section the extinguishing agent can flow in the direction of the extinguishing agent discharge. With an increase in the extinguishing agent volume flow, the control element is pressed in direct proportion to the flow area through the annular cross section in the direction of the flow direction, whereby the control rod is also moved further in the direction of flow. When the volume flow is reduced, the control element is pushed back by the spring element counter to the flow direction in the direction of the control element seat, so that the annular cross-section through which water flows is reduced. The control, or the associated control rod, serves to regulate an additive dosing device. Furthermore, it can also be provided that with the control only the flow rate is measured and electronically tapped. By this Zu¬sammenhang additive can be added to the amount of extinguishing agent so that the percentage additive content in the extinguishing agent always remains the same even when varying the Durch¬flussmenge the extinguishing agent.
    The known from the prior art embodiment has the disadvantage that related to the maximum flow rate through the control cone, in a range with low flow rate, for example, a doubling of the Durch¬flussmenge causes only a small Steuerkegelausschlag and thus Steuerstangen¬ausschlag. This is particularly disadvantageous because the metering device, in order to keep constant the proportion of additive in the extinguishing agent, must double the amount of additive, and thus must be very precisely adjustable.
    The present invention has for its object to provide an improved Durchflußflussmengeninrichtung.
    This object of the invention is achieved by the measures according to claim 1.
    According to the invention, a flow rate measuring device for a fire extinguishing device for detecting the flow rate of extinguishing agent or fresh water is formed. The flow rate measuring device comprises a control element arranged on a control rod, which control element has a substantially conical section, and a housing surrounding the control element, which housing has a hollow-cylindrical control element seat at least in a contact section with the control element, wherein the control element slidably received in the housing in the axial direction of the control rod. The control element furthermore has a cylindrical section which, viewed in the direction of flow of the fluid to be measured, is arranged downstream of the conical section, and which cylindrical section is adapted in its cross-sectional contour to the hollow cylindrical control element, so that the cylindrical section of the control substantially free of gaps the hollow cylindrical control seat is inserted. Moreover, at least one recess is provided in the cylindrical section of the control element, which interrupts the lateral surfaces of the conical section and of the cylindrical section of the control element.
    An advantage of the design according to the invention is that due to the special geometry of the control element, the control deflection can be adapted to the requirements of an additive dosing device when the flow rate of extinguishing agent is changed. By using a control element according to the invention, it can be achieved that at a low flow rate (for example 5% of the maximum flow rate) compared with the maximum measurable flow rate, a change in the flow rate is converted into an adequate control deflection. This is achieved in particular by the recesses which are arranged in the cylindrical section of the control element. With a low flow rate of extinguishing agent, this flows through this only by the laterally mounted recesses. If the flow rate of extinguishing agent now changes, this leads to a sufficient control deflection, since the recesses form only a fraction of the circumference of the control element. At an increased flow rate, which is so large that the cylindrical portion of the control element is completely lifted from the Steue¬relementsitz, and the entire circumferential contour of the control element flows through, a change in the flow rate leads to a comparatively small control deflection, whereby even large flow rates can be determined well. In summary, this results in the advantage that a curve of the relationship between flow rate and control deviation can have at least two different slopes.
    Furthermore, it can be provided that the at least one recess is designed as a pocket running parallel to the axial direction of the control rod. Vorteil¬haft here is that such a bag is easy to produce, and further has an optimal geometry to meet the desired functionality.
    Furthermore, it may be expedient that at least two diametrically opposite recesses are provided. It is advantageous that in a di¬ametralen arrangement good flow conditions in the flow meter are achieved. Furthermore, it can be achieved that the forces occurring on the control element are reasonably symmetrical.
    In addition, it can be provided that the cylindrical section adjoins the conical section di¬rectly. This has the advantage that the geometry can be made as simple as possible, whereby the production effort can be minimized.
    Furthermore, it may be expedient for a head section in the form of an extension to be formed on the control element adjoining the cylindrical section, by means of which head section the insertion of the control element into the control element seat is limited. It is advantageous that the control element can be pressed by a spring element against the control element seat, and the head section thereby acts as a stop.
    Furthermore, it can be provided that the longitudinal extent of the cylindrical section of the control element is between 5% and 20% of the transverse extent of the cylindrical section of the control element. It is advantageous in this case that, with this range of values, a desired ratio between a high control deflection when changing a low flow rate and a comparatively small control deflection when changing a high flow rate can be achieved.
    Also advantageous is an embodiment according to which the longitudinal extent of the conical section of the control element is between 100% and 200% of the longitudinal extent of the cylindrical section. Of particular benefit in this case is that the conical section ensures that the circulation of the control element is positively influenced. Particularly in the aforementioned value range, the conical section of the control element has an advantageous shape in order to ensure this.
    Furthermore, it can be provided that the control element is connected to the control rod by means of a fastening element. This can be achieved that the control can be easily separated from the control rod, which facilitates maintenance of the flow rate measuring device.
    Further, it may be appropriate that the opening angle of the tapered portion is between 70 ° and 130 °. As a result, good flow conditions in the flow around the control element can be achieved.
    In addition, it may be expedient that the recesses occupy between 5% and 60% of the unwound length of the cylindrical section on the Steue¬relement. As a result, the control behavior of the control element can be influenced positively or implemented according to the requirements. The unwound length is to be set equal to the circumference of the cylindrical partial section. The recesses are that part of the circumference which is interrupted.
    According to an advantageous development, it may be provided that an axial extension of a recess in the cylindrical section is approximately the same size as a radial extension of this recess. This has the advantage that the axial entry surface of the recess, through which the extinguishing agent flows, is approximately the same size as the radial exit surface. It can thereby be achieved that the flow velocity at the inlet of the recess is approximately the same as the flow velocity at the outlet of the recess.
    In addition, it can be provided that the at least one recess forms a connection channel between the conical section and the cylindrical section of the control element. It is advantageous here that a derar¬tiger connection channel can serve to flow through the extinguishing agent.
    Furthermore, it may be expedient that the connecting channel is designed to be open radially on the side facing away from the control rod. It is advantageous here that such a connecting channel is easy to produce, since it can be produced, for example, with a finger milling cutter.
    Finally, provision can be made for the at least one recess to form a connecting channel which has sections which extend radially and axially relative to the control element.
    In this document, the term extinguishing agent is used both for mixed with additive fresh water or service water, as well as untreated fresh water or service water. The reason for this is that it is not essential for the function of the flow rate measuring device whether the volume flow of admixed or unblended admixed water is measured. It is only important here that the relationship between the flow rate and control deflection of the control element is adapted to the regulation of the metering device, so that a percentage of additive can be added to the fresh or service water, this percentage proportioning being equal for different flow rates of extinguishing agent should stay.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    In each case, in a highly simplified, schematic representation:
    Fig. 1 is a vertical section through a pump and a premix device of a fire extinguishing device;
    Fig. 2 is a perspective view obliquely from below of a control;
    3 is a perspective view obliquely from above of a control element;
    Fig. 4 is a bottom view of a control;
    Fig. 5 is a vertical section through a control, in particular according to the section line V-V in Fig. 4;
    Figure 6 is a perspective view of an assembly of housing and control incorporated therein with the control in a low open position;
    Figure 7 is a perspective view of an assembly of housing and control incorporated therein with the control in a wide open position;
    Fig. 8 is a representation of the relationship between flow rate and stroke for an exemplary size of a Steue¬relementes described.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component designations, wherein the disclosures contained in the entire description apply mutatis mutandis to the same parts with the same reference numerals. same component names can be transferred. Also, the location information chosen in the description, such as up, down, laterally, etc. related to the directly described and illustrated figure and these conditions are to be transferred in a change in position mutatis mutandis to the new situation.
    FIGS. 1 to 7 show a flow rate measuring device 1 as well as public components of a fire extinguishing device 2 equipped with this flow rate measuring device 1 in various views and sections.
    Fig. 1 shows a section through a flow rate measuring device 1, which will be described in terms of their construction and their operation in a further sequence even more accurate¬er. The flow rate measuring device 1 is integrated in a premixing system, which is part of a fire extinguishing device 2. The fire extinguishing device 2 further comprises a pump 3, which for reasons of clarity is shown only schematically in this sectional view, a schematically illustrated water supply 4, an admixture 5, an extinguishing agent discharge 6 and a metering device 7.
    Essentially, the fire extinguishing device 2 serves to bring fresh water or service water to a higher pressure level and at the same time to add an additive. Typically, this additive is by a
    Foaming agent formed, with which so-called extinguishing foam can be produced. In the water supply 4 fresh water or service water is mixed with an additive and sucked in the suction nozzle of a pump 3. Here, in principle, the type of pump 3 which is used is not decisive for meeting the requirements of a fire-extinguishing device 2. In practice, however, a centrifugal pump has proven to be most suitable for providing a corresponding pressure level on the pump outlet side reach or promote the medium.
    After the pressure of the extinguishing agent has been brought to the desired pressure level by means of the pump 3, it passes into the pressure outlet 8 of the pump 3. Starting from the pressure outlet 8, the majority of the extinguishing agent flows in the direction of extinguishing agent discharge 6 and subsequently to one or more shown jet pipe or foam pipe. During this flow process of the extinguishing agent in the direction of Löschmittel¬ableitung 6 the extinguishing agent passes through a control cone 9. The control 9 is preferably a truncated cone executed element which abuts a zumin¬dest partially designed as a cylindrical bore control seat 10. The control seat 10 is located at the The pump 3 remote Sei¬te the pressure outlet 8. To guide the control element 9 this is firmly connected to a control rod 11.
    This connection between control element 9 and control rod 11 is preferably designed as a detachable connection by means of a fastening element 12. This is particularly advantageous if the flow rate measuring device 1 has to be expected and has to be disassembled for these maintenance purposes.
    Alternatively, it can be provided that, instead of a connection by means of a fastening element 12, a material connection between control element 9 and control rod 11 is produced. This can be realized, for example, by a welded connection or a brazed connection.
    In a further alternative, it may be provided that the control element 9 is fastened to the control rod 11 by means of a thread.
    In a further alternative, it is also possible for the control element 9 and the control rod 11 to be cast in one piece, or to be produced by mechanical production from a casting.
    By a spring element 13, the control element 9 is pressed onto the control element 10, so that a contact surface 14 results between control cone 9 and control element seat 10.
    By the control cone 9 of the pressure outlet 8 to the extinguishing agent discharge 6 is se¬parated. If extinguishing agent is now conveyed through the pump 3, the pressure at the pressure outlet 8 of the pump 3 increases. As a result of this increased pressure in relation to the extinguishing agent discharge line 6, the control element 9 is moved in the direction of flow - arrow 15 - by the extinguishing agent flowing through. In this case, the control element 9 is lifted off its control element seat 10, resulting in an annular cross-section, through which annular cross-section the extinguishing agent can flow in the direction of the extinguishing agent outlet 6.
    The exact relationship between the extinguishing agent flow rate and the movement of the control element 9, or the design of the control element 9 according to the invention, will be explained in more detail below.
    With an increase in the extinguishing agent volume flow, the control element 9 is pressed more and more in the direction of flow - arrow 15 - whereby the control rod 11 is also moved in the direction of the arrow 15. When the volumetric flow rate is reduced, the control element 9 is pushed back by the spring element 13 against the flow direction 15 in the direction of the control element seat 10. The positioning of the control element 9 and thus the control rod 11 relative to the pump housing or relative to the metering device 7 is thus directly related to the extinguishing medium flow rate. The control rod 11 establishes a direct connection with the metering device 7, with which more the additive is dosed for admixing with the service or fresh water.
    The additive is in this case fed via an additive supply line 5 of the metering device 7. In the metering device 7, the amount of additive corresponding to a desired percentage of additive at Löschmittelbzw. dosed according to the currently promoted quantity of extinguishing agent.
    Starting in the connecting pipe 16, the additive passes into a water jet pump 17, which generates the necessary negative pressure to the additive via the Zusatzmit¬telzuleitung 5 in the metering device 7 and the connecting pipe 16 to suck.
    The operation of the water jet pump is according to a Venturi tube, the water jet pump works as follows. Extinguishing agent is diverted from Druck¬abgang 8 by means of a Druckrohrabzweigers 18 and enters a drive nozzle 19 of the water jet pump 17. The branched off in Druckrohrabzweiger 18 extinguishing agent amount is much lower than that in the direction of Löschmittelableitung 6 promoted amount of extinguishing agent. Since both derivatives are at the pressure outlet 8, the pressure level of the medium in the pressure pipe branch 18 and in the extinguishing medium discharge line 6 is approximately the same. Thus, the pressure in the motive nozzle 19 of the water jet pump 17 is also brought to approximately the pressure level of the extinguishing agent discharge 6.
    The pressurized extinguishing agent is now injected via the drive nozzle 19 into a suction space 20 of the water jet pump 17. As a result of this pressurized injection of the extinguishing agent conducted via the pressure pipe branch 18 into the suction space 20, a defined pressure is produced in the suction space 20 by the Ventouri effect.
    The suction chamber 20 is in direct communication with the connecting pipe 16. Thus, the additive is sucked out of the connecting pipe 16 into the suction chamber 20 by the resulting negative pressure. In the suction chamber 20, it meets the introduced through the motive nozzle 19 with pressure extinguishing agent jet, thereby ersich mixed with this. The additive mixture formed in this case passes through another connecting tube 21 into the water feed line 4. In this case, the additive mixture is mixed with the fresh water and then passes into the suction-side inlet of the pump 3.
    The flow rate measuring device 1 can theoretically also be arranged such that it measures, for example in the water supply line 4, the flow of the supplied water quantity of fresh water or service water. Furthermore, it can also be envisaged that with the control only the flow rate is measured and electronically tapped. Further electronics can then provide for the control of various metering devices.
    FIGS. 2 to 5 show different views of control elements 9.
    Fig. 2 shows a perspective view obliquely from below on a control 9. The control element 9 comprises a conical section 22 and a cylindrical section 23. Preferably, the cylindrical section 23 is connected directly to the conical section 22. However, it is also conceivable that between these two sections 22, 23 a further arbitrarily designed intermediate section is inserted. Furthermore, it can be provided that a head section 24 is formed, which protrudes radially with respect to the cylindrical section 23.
    In Fig. 5, the operation of the control element 9 is clearly visible. 5 shows a vertical section through the control element 9, in particular along the sectional lines V-V from FIG. 4. Here, a housing 25 is schematically illustrated, in which the control element 9 is accommodated. It is well evident that the control element 9, in particular a cylindrical Teilabschnitt23 of the control element 9 can be inserted into the housing 25.
    By inserting the control element 9 into the housing 25, a contact section 26 results. This contact section 26 is formed in that the control element 9, in particular the cylindrical section 23 of the control element 9, is accommodated tightly in the housing 25. In this case, it is preferable that the contour of the housing 25 is adapted to the outer contour of the cylindrical section 23. In order to ensure the functionality of the flow rate measuring device 1, it seems to make sense if a clearance fit is selected for the contact section 26, so that it is ensured that the control element 9 can not jam or settle in the housing 25.
    In the case of the geometric shape of the cylindrical section 23 or of the surrounding housing 25, it has proved to be advantageous from a manufacturing point of view if the cylindrical section 23 is designed as a circular cylinder. However, it is also conceivable that the cylindrical Teilab- section 23 is designed as a cylinder with polygonal, in particular rectangular or quadrati¬scher base.
    5 that a recess 27 is provided, which interrupts the lateral surface 28 of the conical section 22 and the lateral surface 29 of the cylindrical section 23. In order to explain the function of the control element 9, this is shown in Fig. 5 in two different positions. In a completely closed position of Steuerele¬mentes 9, as shown in Fig. 1, no water flows through the flow rate measuring device 1, whereby the deflection of the control element 9 bzw.derder associated control rod 11 is equal to zero.
    The left-hand portion of FIG. 5 shows a position of the control element 9 which is slightly displaced in the flow direction 15. The flow direction 15 in this case runs parallel to an axial direction 31, which is defined by the center line of the control rod 11.
    The displacement of the control element 9 results from the fact that water or extinguishing agent is pressed in the direction of the extinguishing agent discharge 6 from the pressure outlet 8 of the pump 3. As a result of this pressure build-up, the control element 9 together with the control rod 11 is displaced against the spring force of the spring element 13 in the direction of flow 15. If the control element 9 is now lifted slightly, then the extinguishing agent can flow through the recess 27 following the flow arrow 32.
    The position of the control element 9 is essentially dependent on how much extinguishing agent flows through the flow rate measuring device 1.
    As a measure of the position of the control 9 of the hub 33 is introduced. This measure defines the deflection or control deflection of Steuerelemen¬tes 9, starting from a zero position 34 in the direction of flow 15.
    In the left-hand portion of the view shown in FIG. 5, the stroke 33 is dependent not only on the amount of extinguishing agent flowing through the flow rate measuring device 1 but also on the size and shape of the recesses 27 arranged on the control element 9 , If more or larger recesses 27 are arranged on the control element 9, the stroke 33 is reduced with the same flow rate. This results from the fact that the flow velocity of the extinguishing agent remains approximately the same. Thus, if the free-flow area is approximately doubled by reshaping the recesses 27 so that a double number of recesses 27 is provided, the half stroke 33 can be satisfied with the same flow rate with the same flow rate in order to allow the quantity of extinguishing agent to flow through the flow rate measuring device 1 ,
    As a result of the fact that the area of the recesses 27 is rather small compared to the circumference of the cylindrical section 23, the control element 9 reacts to a change in the flow rate of the extinguishing agent with a comparatively large displacement or change in the stroke 33 Expressed in other words, a small change in the volume flow has a large Steuer¬ausschlag, or change in the stroke 33 result.
    The situation is different for a position of the control element 9, as shown in the right section of FIG. 5. In this case, the control 9 is due to a large Löschmitteldurchflussmenge far lifted from the control element seat 10 that not only the recesses 27 are flowed through by the extinguishing agent, but that the control element 9 is completely um¬ flows around the extinguishing agent, resulting in an annular cross-section, which is flowed through by the extinguishing agent.
    Due to the full flow around a large flow area results, with a change in the flow rate at such a position of the control element, only a comparatively small change in the stroke 33 pulls itself.
    The transition between flow through only the recesses 27 and vollvollfagliche flow around the control element 9 takes place from that hub 33, in which the cylindrical portion 23 of the control element 9 is lifted from Kontakt¬ section 26 of the control seat 10 in the housing 25 and die¬se be spaced apart ,
    The recess 27 is designed as a parallel to the axial direction 31 of the control rod 11 extending pocket 35. Such a pocket 35 can be made, for example, with a finger milling cutter. In order to achieve an optimal flow, it seems to be expedient if an axial extent 36 of the recess 27 is chosen to be the same size as a radial extent 37. This dimension defines the extent of the recess 27 or the pocket 35.
    Furthermore, it may be advantageous for the course of the flow, if the Längs¬ausdehnung 38 of the cylindrical portion 23 is between 5% and 20% of the transverse extent 39 of the cylindrical portion 23.
    Furthermore, it can be provided that the longitudinal extent 40 of the conical section 22 is between 100% and 200% of the longitudinal extent 38 of the cylindrical subsection 23. This results in an opening angle 41 of the conical portion 22 which is between 70 and 130 °.
    These mentioned dimensioning values represent advantageous values in which the flow losses are kept as low as possible by, for example, turbulences. In order to save on manufacturing costs, it is also conceivable that, for example, the conical section 22 of the control element 9 is made so small that the longitudinal extent 40 of the conical section 22 is only 0.5 to 1 mm. Here, the tapered portion 22 is formed only as a chamfer to facilitate the insertion of the cylindrical portion 23 in the control element seat 10 as possible.
    In such an embodiment, an end face 42 delimiting the conical section 22 would extend almost over the entire transverse extension 39 of the cylindrical section 23. In this case, it is to be expected that turbulences in the flow occur in the area of the end face 42 which adversely affect the characteristics of the flow rate measuring device 1.
    In the dimensioning of the control element 9, it will furthermore be considered advantageous if, as can be seen in FIG. 4, a width 43 of a recess 27 or pocket 35 is made so large that all the recesses 27 together add up to 5%. and occupy 60% of the unwound length or circumference of the cylindrical section 23 on the control element 9.
    Furthermore, the recess 27 should be designed so that it forms a Verbin¬dungskanal 44 between the conical portion 22 and the zylinderförmi¬gen portion 23 of the control element 9. This connecting channel 44 is preferably designed such that it is open radially 45 to the side 46 facing away from the control rod 11.
    Alternatively, it can be provided that the connecting channel 44 is formed as a bore, which consists for example of two holes meeting each other. In this case, a first bore in the axial direction 31 can be introduced through the lateral surface 28 of the conical section 22. A further drilling can be introduced through the lateral surface 29 of the cylindrical section 23 in the radial direction 45. If these two holes overlap within the control element 9, the result is a closed flow channel.
    To save weight on the control element 9, as shown in FIG. 3, it can be seen that a recess 47 is provided on a side of the control element 9 facing away from the flow direction 15.
    6 and 7 show in a perspective view a control 9 which is connected to a control rod 11 and is pressed by a spring element 13 to the control seat 10. Here, the control 9 is housed on the housing 25.
    FIG. 6 shows a position of the control element 9 in which it has a slight control deflection or stroke 33 as a result of the present extinguishing medium flow rate, so that the liquid flows only through the recesses 27 distributed circumferentially on the control element 9.
    In contrast, it is clearly visible, as in FIG. 7, the control element 9 has a so-large control deflection or stroke 33 that results in a circumferential ring-shaped cross section through which the extinguishing agent flows.
    FIG. 8 shows in a diagram the relationship between hub 33 and the flow rate 48. In the present diagram, the stroke 33 is plotted on the ordinate axis and the flow rate 48 on the abscissa axis. The diagram clearly shows that the control line 49 resulting from the relationship between the displacement 33 and the flow rate 48 essentially divides into a first section 50 and a second section 51.
    The first portion 50 of the control line 49 represents the state in which the cylindrical portion 23 is located within the control seat 10 in the housing 25. In this first section 50, as in FIG. 6, that region is illustrated in which the fluid flows exclusively through the recesses 27. As can be seen in the diagram, this results in a control line 49 with a large gradient, since a comparatively small change in the flow rate leads to a comparatively large control deflection or change in the stroke 33 of the control element 9.
    The second section 51 represents the state in which the control element 9, as can be seen in FIG. 7, has already been lifted out of the housing 25 so far, so that the control element 9 is completely surrounded by the fluid. This results in the second section 51 of the control line 49 a lower slope, since a comparatively large change in the flow rate leads to a comparatively small control deflection or change in the stroke 33 of the Steuerele¬mentes 9.
    The embodiments show possible embodiments of the Durch¬flussmengenmesseinrichtung 1, which should be noted at this point that the Er¬findung is not limited to the specifically illustrated embodiments thereof, but rather also various combinations of the individual Ausfüh¬rungsvarianten are possible with each other and this possibility of variation due to the teaching of technical action by objective invention lies in the ability of the person skilled in this technical field.
    Furthermore, individual features or combinations of features from the different embodiments shown and described can also represent solutions that are inventive, inventive or inventive.
    The problem underlying the independent inventive solutions can be taken from the description. All statements on ranges of values in the description given herein are to be understood as including any and all subsections thereof, for example, the indication 1 to 10 should be understood as encompassing all subranges, starting from the lower bound 1 and the upper bound 10, i. all subregions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
    Above all, the individual embodiments shown in FIGS. 1, 2 to 4, 5, 6 and 7 can form the subject of independent solutions according to the invention. The related objects and solutions of the present invention can be found in the detailed descriptions of these figures.
    For the sake of order, it should finally be pointed out that in order to better understand the construction of the flow rate measuring device 1, these or its constituent parts have been shown partly unevenly and / or enlarged and / or reduced in size.
    LIST OF REFERENCES 1 flow rate measurement 30 projection direction 31 axial direction 2 fire extinguishing device 32 flow arrow 3 pump 33 stroke 4 water supply 34 zeroing 5 additive supply line 35 bag 6 extinguishing agent discharge 36 axial extension 7 dosing device 37 radial extension 8 pressure outlet 38 longitudinal extension 9 control element 39 transverse extension 10 control element seat 40 longitudinal extension 11 control rod 41 Opening angle 12 Fastening element 42 End face 13 Spring element 43 Width 14 Contact surface 44 Connecting channel 15 Flow direction 45 Radial 16 Connecting pipe 46 Staggered side 17 Water jet pump 47 Recess 18 Pressure pipe branch 48 Flow rate 19 Heated nozzle 49 Rule line 20 Suction chamber 50 First section 21 Further connecting pipe 51 Second section 22 Cone-shaped section 23 Cylindrical Part of section 24 Head section 25 Housing 26 Contact section 27 Recess 28 lateral surface 29 lateral surface
    权利要求:
    Claims (15)
    [1]
    1. flow rate measuring device (1) for a fire extinguishing device (2) for detecting the flow rate of extinguishing agent or fresh water, comprehensively arranged on a control rod (11) control element (9), which control element (9) has a substantially conical portion (22) and a housing (25) surrounding the control element (9), which housing (25) has a hollow-cylindrical control element seat (10) at least in a contact section (26) with the control element (9), wherein the control element (9) extends in the axial direction (31) of the control rod (11) slidably received in the housing (25), characterized in that the control element (9) further comprises a cylindrical portion (23), which in the flow direction (15) of the fluid to be measured seen the conical portion (22) is nachgeord¬net, and which cylindrical portion (23) in its Querschnittskonturan the hollow cylindrical control element seat (10 ), so that the cylin- derförmige subsection (23) of the control element (9) is substantially gap-free in the hollow cylindrical control seat (10) inserted, and in which cylindrical portion (23) of the control (9) further at least one recess (27) is provided which interrupts the lateral surfaces (28, 29) of the conical section (22) and of the cylindrical section (23) of the control element (9).
    [2]
    Second flow rate measuring device according to claim 1, characterized gekenn¬zeichnet that the at least one recess (27) as a to the axial direction (31) of the control rod (11) parallel running pocket (35) is executed.
    [3]
    3. flow rate measuring device according to claim 1 or 2, characterized in that at least two diametrically opposite Ausnehmun¬gen (27) are provided.
    [4]
    Flow measuring device according to one of the preceding claims, characterized in that the cylindrical section (23) directly adjoins the conical section (22).
    [5]
    5. flow rate measuring device according to one of the preceding claims, characterized in that the control element (9) then the cylindrical portion (23) a head portion (24) is formed in the form of an extension, through which head portion (24) the insertability of the control element (9) is limited in the control seat (10).
    [6]
    6. Flow rate measuring device according to one of the preceding claims, characterized in that the longitudinal extent (38) of zylin¬derförmigen subsection (23) of the control element (9) between 5% and 20% of the transverse extent (39) of the cylindrical portion (23) of Steue¬ relements (9).
    [7]
    Flow rate measuring device according to one of the preceding claims, characterized in that the longitudinal extent (40) of the conical section (22) of the control element (9) is between 100% and 200% of the longitudinal extent (38) of the cylindrical section (23).
    [8]
    Flow rate measuring device according to one of the preceding claims, characterized in that the control element (9) is connected to the control rod (11) by means of a fastening element (12).
    [9]
    9. Flow rate measuring device according to one of the preceding claims, characterized in that the opening angle (41) of the conical portion (22) is between 70 ° and 130 °.
    [10]
    Flow rate measuring device according to one of the preceding claims, characterized in that the recesses (27) occupy between 5% and 60% of the unwound length of the cylindrical section (23) on the control element (9).
    [11]
    Flow rate measuring device according to one of the preceding claims, characterized in that an axial extent (36) of a recess (27) in the cylindrical portion (23) is approximately equal to a radial extent (37) of said recess (27).
    [12]
    Flow rate measuring device according to one of the preceding claims, characterized in that the at least one recess (27) forms a connection channel (44) between the conical section (22) and the cylindrical section (23) of the control element (9).
    [13]
    13. flow rate measuring device according to claim 12, characterized ge indicates that the connecting channel (44) radially (45) on the side facing away from the control rod (11) side (46) is open.
    [14]
    A flow rate measuring device according to any one of the preceding claims, characterized in that the at least one recess (27) forms a connection channel (44) having sections extending radially (45) and axially (31) to the control element (9).
    [15]
    15. Fire extinguishing device (2) comprising a water supply line (4), an additive supply line (5), an extinguishing agent discharge (6), a pump, a Zu¬satzmitteldosiervorrichtung (7) and a flow rate measuring device (1), which controls the Zusatzmitteldosiervorrichtung (7), characterized characterized in that the flow rate measuring device (1) is designed according to one or more of the preceding claims.
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    同族专利:
    公开号 | 公开日
    EP3080674A1|2016-10-19|
    AT514927B1|2015-05-15|
    EP3080674B1|2020-02-12|
    PL3080674T3|2020-07-13|
    US20160346576A1|2016-12-01|
    WO2015085339A1|2015-06-18|
    US10293196B2|2019-05-21|
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    CN2189310Y|1993-12-04|1995-02-08|王海生|Multi-function portable electronic means for measuring flow rate and showing payment number|
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    US4417601A|1980-12-19|1983-11-29|National Foam Systems, Inc.|Variable proportioning valve for balanced pressure proportioning systems, and system containing the valve|
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    DE202005015569U1|2005-10-05|2006-01-26|Krauss-Maffei Kunststofftechnik Gmbh|Aggregate dosing device for polyurethane system|DE102018100996B4|2017-01-17|2020-03-26|Ifm Electronic Gmbh|Mechatronic flow sensor|
    WO2019014616A1|2017-07-14|2019-01-17|Oshkosh Corporation|Fluid delivery system for a fire apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50809/2013A|AT514927B1|2013-12-09|2013-12-09|Flow meter for a fire extinguisher|ATA50809/2013A| AT514927B1|2013-12-09|2013-12-09|Flow meter for a fire extinguisher|
    PCT/AT2014/050296| WO2015085339A1|2013-12-09|2014-12-05|Flow rate measurement device for a fire extinguishing apparatus|
    US15/102,060| US10293196B2|2013-12-09|2014-12-05|Flow rate measurement device for a fire extinguishing apparatus|
    PL14835615T| PL3080674T3|2013-12-09|2014-12-05|Flow rate measurement device for a fire extinguishing apparatus|
    EP14835615.7A| EP3080674B1|2013-12-09|2014-12-05|Flow rate measurement device for a fire extinguishing apparatus|
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