瑞典专利SE0901178A1 Device for connection and distribution of flows

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专利摘要:
Device for merging liquid or gas ﬂ fittings consisting of an inlet pipe (1) for a first ﬂ fate, a connecting pipe (2) for a second ﬂ fate and an outlet pipe (3) for the same ﬂ fate of the first and second ﬂ fate where the connecting pipe and the inlet pipe form a angle with the tip towards the outlet pipe. The inlet pipe (1) extends partly into or in front of the connecting pipe (2) so that a partially shielding lip or ﬂ äns (4) is formed for the connection ﬂ fate. The lip protrudes most into the center of the connecting tube.
公开号:SE0901178A1
申请号:SE0901178
申请日:2009-09-13
公开日:2011-03-14
发明作者:Karl-Erik Andersson
申请人:Karl-Erik Andersson；
IPC主号:

专利说明:

15 20 25 30 ﬂ the destinies themselves largely provide a mutual alignment without large contact surfaces between water and the device and the device has a minimum of narrow flow spaces with accompanying flow resistance and locally reduced flow velocities.
When the det fate in the connecting pipe (the second ﬂ fate) reaches the lip which is at the same time a part of the wall of the first inlet pipe, the part of the connection det fate which hits the lip is prevented from penetrating straight into the ﬂ fate from the inlet pipe and is instead controlled parallel to the inlet pipe. in the connecting pipe which does not hit the lip so that the connecting flow as a whole is directed into the outlet pipe with a small velocity component towards the center of the outlet pipe and substantially parallel to the flow from the inlet pipe. A combination of the first and second fates (connection fates) is obtained with reduced or eliminated turbulence, noise, shocks and power losses. Although the invention is useful with rectangular tubes, round tubes are, as always, most common. Inlet pipes and outlet pipes can have the same diameter or alternatively the diameter proportions between them can advantageously correspond to resp. expected flows.
When the outlet pipe has a larger diameter than the inlet pipe for the main pipe, it is advantageous to let the connection pipe have the same diameter as the outlet pipe and the inlet pipe may extend through a hole in a curved part of the connection pipe and in line with the outlet pipe.
Advantageously, outlet pipes and inlet pipes have their generatries furthest from the connection det in line with each other.
The inlet pipe extends on its side facing the connecting pipe as much as possible to the center line of the connecting pipe. The inlet pipe can be cut perpendicular to its inner end.
Alternatively, the inlet pipe may instead be obliquely cut off with its greatest length furthest from the inlet of the connecting pipe. This also makes it possible to reduce the insertion into the curved tube relative to its center line. Advantageously, the straight tube insertion length in the curved tube decreases from the center of the curved tube, promoting a uniform velocity of the flow in the curved tube around the straight tube.
The devices according to the invention can be manufactured on the basis of straight pipes and standard bends where sheet metal pipes, straight and / or curved, are sawn or cut and then the parts are soldered together. The manufacture is thus well within the scope of what the person skilled in the art can achieve with simple tools.
For the sake of order, it can be noted that a connection without a lip gives more turbulence and losses than the device according to the invention. Further advantages and features of the invention appear from the claims, as well as from the following descriptions of exemplary embodiments shown in the accompanying drawings. In this case, ﬁ g. 1 a first example of a device in accordance with the invention seen from the side, ﬁ g. 2 a second example, f1g. 3 a third example, ﬁ g. 4 a fourth example and ﬁ g. 5 a fifth example I ﬁ g. 1 shows a merging of two ﬂ fates from, for example, downpipes and stormwater wells. A first inlet pipe 1 is intended for water coming from, for example, a well which is ahead in the direction of flow, i.e. normally higher up if the plant does not include pumps. A connecting pipe connecting to this first inlet pipe comprises a rectangular pipe bend or bend 2 which on the outlet side merges into an outlet pipe 3. The first inlet pipe 1 projects into the pipe bend parallel to the outlet pipe and abutting it on the opposite side to the connecting pipe 2. diameter as the pipe bend 2 while the first inlet pipe 1 which conducts approximately as much water as the connecting pipe has a smaller diameter and a cross-sectional area which is half of the cross-sectional area of the outlet pipe. The first inlet end 1 cut straight in the inner end extends with its upper edge (ie the one facing the inlet of the pipe bend) into the point of intersection with the center line of the pipe bend 2.
The device shown in ﬁ g 1 has been found to give surprisingly turbulence-free conditions and low power losses resulting in a more efficient flow, ie in the described case with drainage of surface water, with higher velocity for the water and thus a faster discharge and less risk of overloading of the wiring system.
The cross-sectional area of the curved connecting pipe 2 and the outlet pipe 3 is twice as large as for the first inlet pipe 1. This means that at equal to ﬂ fates through the inlet pipe 1 and the pipe bend 2 the partial currents at the mixture or perhaps rather at about the same speed reduce losses and vibrations, vibrations . If the fates are normally different, the ratio between the cross-sectional areas of the inlet pipe and the outlet pipe can be varied accordingly.
The inlet pipe 1 projects with a section 4 into the pipe bend 2. This section 4 prevents the part of the som that flows in the radially outer part of the pipe bend, and which without section 4 would be the part that would first come into contact with the inlet pipe flow from being depressed. in the ﬂ fate from the inlet l, instead this ﬂ fate is directed out to the sides and forward in the flow direction so that where the inlet pipe 1 ends encloses the ﬂ fate flowing from the inlet pipe 1.
The radially inner part of the flow in the pipe bend is then controlled by this already forwardly directed fate also to an axial direction. The redirected radial outer i in the pipe bend forms a screen around the flow from the inlet pipe 1 and reduces the risk of turbulence.
The water connecting via the pipe bend flows from a water pipe of the same diameter as the connecting pipe 1 via a cone 5 to provide a turbulence-free transition to the pipe bend. This reduces the speed of the water in the pipe bend, which means that its dynamic pressure is reduced so that the force with which the connection water presses towards the flow of the inlet pipe 1 is reduced.
At higher flow rates, it is conceivable that the centrifugal force on the flowing water gives a higher pressure at the outer wall and that the section or screen 4 prevents this particular part of the flow from directly hitting the flow from the inlet pipe 1.
I ﬁ g. 2 shows an alternative design of the first inlet pipe 21 which is obliquely cut off with its shortest side facing the inlet of the pipe bend 22. At the same diameter ratio as in ﬁ g. l comes sort of i ﬁ g. If the two ﬂ fuses have the same speed, these are relatively calm to be slowly mixed due to the end 24 of the inlet pipe projecting into the pipe bend so that the turbulence becomes small. The ejector effect obtained between the currents also means that the den fates try to influence each other to a common flow velocity during mixing.
As shown in ﬁ g. 3, the connection does not have to be perpendicular, but it can also be more accurate.
On some occasions, such as, for example, sewage pipes for stormwater, it is not uncommon for the fate of a main pipe to be significantly greater than in connections from, for example, separate plots. On these occasions one can imagine a variant of the invention shown in ﬁ g. 4. Here, to a inlet conduit 41 connecting, a less desolate lead, the pipe 42 has a substantially smaller diameter than the outlet pipe 43, and even a smaller diameter than the straight inlet conduit 41. The outlet pipe 43 is arranged as a parallel extension of the inlet pipe but with a displaced center line relative thereto so that the pipes in principle have common bottom generators. The outlet pipe 43 is obliquely cut off in the direction of the inlet pipe 41 and closed with a sloping end 46. The inlet pipe extends in through this end. The connecting pipe 42 is straight and welded to the end of the outlet pipe, on its upper side, without extending into it and in this case at the same angle as the end pipe 46 of the outlet pipe. The straight inlet pipe 41 extends at the top with section 44 from the end line to the center line of the connection pipe 42. The inlet pipe 41 is cut from the top perpendicularly down to the end of the outlet pipe, where then the edge follows the oblique end 46 for the outlet pipe. It is also conceivable that the inlet pipe is cut off parallel to the end of the outlet pipe, alternatively the end approaches the bottom of the outlet pipe 41 of the inlet pipe 41 in the outlet pipe 43 thus forming a lip, screen or partition wall between the streams push with full force against the flow of water from the inlet pipe into the slightly coarser outlet pipe. Even in this case, losses and turbulence are small. In the case shown in Fig. 4 with an angle between connecting pipes of 30 degrees, it has been found that a suitable length for the lip, or screen, is about 80% of the diameter of the inlet pipe. This in turn means that the inlet cross-section of the connection water inlet becomes approximately 20 percent larger than the cross-section of the inlet pipe. The speed of the connecting water is thus reduced slightly and thus the pressure of the inlet water against the water flow from the inlet pipe.
In it i ﬁ g. In the example shown, the size difference between the supplied additional connection och and the head ﬂ is large and it is therefore conceivable to have the same diameter for the inlet 51 and outlet pipe 53 of the head. A connection pipe 52 is arranged at an angle of 30 degrees and does not extend into the large pipe. However, the opening into the larger pipe does not extend over the entire end of the smaller pipe, but on the upstream side, as shown, the wall of the larger pipe extends some distance over the opening of the smaller connecting pipe in the form of a lip or partition 54. In the case shown, the partition wall does not pass the center line 52 of the connecting pipe 52. This gives an initial parallel flow for the two fates with the accompanying mutual ejector effect. The main fate can gradually increase its flow rate due to the water addition through the connection line with a minimum of turbulence.
The larger pipe 54 of the larger pipe as a lip into the flow path of the smaller pipe does not have to be completely transverse, i.e. as a perpendicular section without imagining any other shape, for example a V-shaped slit extending in the direction of the ﬂ of the main stream, or that the screen has the shape of a tongue that can let some water pass between the edges and the inner wall of the outlet pipe. The straight inlet pipe 52 shown for the connection är is supplemented with a pipe bend 57 to obtain a total right angle between the connection och and the main ﬂ.
The lip or screen is essential but does not have to be as long as the center of the connection line and is suitably 80 percent of the diameter of the connection pipe.
Because the connection pipe is straight and the pipe for the head is straight, the connection can be made of plastic with the usual technology and also production in sheet metal can easily take place with cutting (preferably according to a template) and soldering. As mentioned above, the low losses are good with drain pipes. When transporting liquids or gases, the reduced losses enable savings, for example in the process industry. At the same time, the tendencies to vibrations and noise decrease.
When using the heating in, for example, stormwater drains, the tendency for water to flow backwards up into stormwater wells is further reduced, this is due to the non-ector effect between the fumes in the pipes.
The device according to the invention can be used for pumps, spouts, after cyclones, oil and gas pipelines, sewage networks, district heating, district cooling, etc.
When dimensioning the lip, instead of allowing it to extend to approximately the center line of the connecting pipe, it is conceivable to allow the cuttings of the outlet from the connecting pipe into the outlet pipe so much that the remaining outlet area from in view of the expected connection flow gives such a corresponding speed as possible when the incoming streams alternatively meet a slightly lower speed. In the examples shown, the angle between the connecting pipe and the inlet pipe is 30 degrees, which corresponds to a free outflow surface equal to the cross-sectional area of the connecting pipe if we assume equal speeds. If the angle is reduced, the lip or shield can be increased and if the flow rate is lower in the connecting pipe, the lip can also be pushed in longer. In other words, an equipment in accordance with ﬁ g. 1 or 2 where inlet pipes and outlet pipes are displaceable relative to each other are used for an individual setting of the respective connections. In more sophisticated process plants, one can even imagine a continuous control of the lip length as a function of the flow rates or amounts for a continuous adjustment and minimization of flow losses.
It has been found that the devices shown in Figures 1 to 4 are also well suited for distributing or branching gas or liquid streams, however, it has been found that the lips or screens can be omitted without inconvenience. At the i ﬁ g. 1 shows the use of the variant for fate division, the branch pipe has a large diameter which can then be contracted with a conical flow part. At the i ﬁ g. 5, the fate is controlled at the distribution towards the oblique end and by this up towards the branch pipe which has the same slope as the end. By tilting the branch pipe, the available opening into the branch pipe becomes long enough to allow a smooth transfer from the inlet pipe to the branch pipe so that turbulence and losses are reduced.

权利要求:
Claims (10)
[1]
A device for collecting liquid or gas ﬂ fates consisting of an inlet pipe for a first ﬂ fate, a connecting pipe for a second ﬂ fate and an outlet pipe for collecting ﬂ the fate of the first and second ﬂ fate, characterized in that the connecting pipe and the inlet pipe form a pointed tip angle. towards the outlet pipe and that the inlet pipe extends partly into or in front of the connecting pipe so that a partially shielding lip or ﬂ is formed for the second connecting ﬂ fate.
[2]
Device according to claim 1, characterized in that the lip extends at most approximately to the center of the connecting tube.
[3]
Device according to claim 2, characterized in that the angle between the inlet pipe and the connecting pipe is 30 degrees.
[4]
Device according to claim 1, characterized in that the lip covers such a large part of the oblique outlet surface of the connecting pipe that the speed of the substreams to be mixed substantially corresponds alternatively that the outlet surface of the connecting pipe is slightly greater than this value.
[5]
Device according to Claim 5, characterized in that the length of the lip projecting into or in front of the connecting tube is variable.
[6]
Device according to one or more of the preceding claims, characterized in that the connecting pipe is curved and has the same cross section as the outlet pipe and an inlet pipe substantially smaller tangentially projecting into the curved connecting pipe with smaller diameter than the curved pipe and that the lip consists of a in the curved pipe projecting part of said inlet pipe, and that this pipe does not extend further into the curved pipe than to its center line.
[7]
Device according to claim 1 or 2, characterized in that the outlet pipe is obliquely cut off and terminated with a gable at its end facing the inlet pipe, that the inlet pipe in the part projecting in front of the connecting pipe is cut off so that the formed lip decreases to its width from the connecting pipe, and that the connecting pipe is connected to the outlet pipe at its end.
[8]
Device according to claim 5, characterized in that the connecting pipe has the same angle relative to the outlet pipe as the end of the outlet pipe. 10
[9]
Device according to Claim 1 or 2, characterized in that the inlet and outlet pipes have the same diameter.
[10]
Device for branching or distributing gas or liquid streams, characterized in that it comprises an inlet and a first outlet with a flow direction substantially corresponding to that of the inlet, this first outlet having a smaller diameter than the inlet and being arranged with its mouth in an inlet pipe final inclined end and that a branch pipe is arranged where the inlet pipe is at its longest.

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同族专利:

公开号 | 公开日

SE535332C2|2012-07-03|

引用文献:

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

SE0901178A|SE535332C2|2009-09-13|2009-09-13|Device for connection and distribution of flows|SE0901178A| SE535332C2|2009-09-13|2009-09-13|Device for connection and distribution of flows|

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