• 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:
    There is disclosed a valve (1) and a method of forming said housing, which comprises providing a workpiece (2 ') with tubular ends (4) and on which a spindle guide (9) is mounted, and with a valve stem (8) mounted in the stem guide (9), and a valve body (5) and one or more valve seats (7) mounted in the central part (3) of the valve body. The central part (2) of the valve body is formed prior to the shaping of the connection ends, the shaping of the central part comprising reduction of the pipe diameter of the tubular end portions (4), preferably with plastic deformation thereof, preferably with matrices and / or mandrels in one or the other. several steps. The connecting ends (4) are then shaped into their final shape, preferably by plastic deformation, preferably with dies and / or mandrels in one or more steps. This makes it possible to produce a valve housing (2) in one piece without the use of screw or flange joints on the valve housing and with the least possible use of welding or soldering processes.
    公开号:DK201370503A1
    申请号:DK201370503
    申请日:2013-09-09
    公开日:2015-01-12
    发明作者:Mads Lindegaard Lildholdt；Lars Andersen；Lars Linaa Jørgensen；Peder Madsen
    申请人:Broen As；
    IPC主号:
    专利说明:

    Method of manufacturing a valve and valve Field of the Invention
    The present invention relates to a method of manufacturing a valve, wherein the valve comprises a valve body, having a central portion and having two or more connecting ends, said connecting ends extending away from the central portion and having the interior of the central portion being arranged a valve body which is arranged in a valve seat.
    The invention also relates to a valve for regulating a fluid, the valve comprising a valve body, having a central part and having two or more connecting ends, said connecting ends extending away from the central part, where an inside of the central part is arranged. valve body, wherein the valve body is arranged in a valve seat and connected to a valve spindle, wherein the valve spindle is arranged in a spindle nozzle on the valve body
    BACKGROUND OF THE INVENTION
    It is generally known to manufacture valves, for example ball valves, and thus valve housings in several parts, to then assemble these parts around a valve seat and valve body. Such valve housings are typically manufactured in brass or in another copper-based alloy and are typically assembled with corresponding threads in the respective parts or alternatively by bolts, e.g. in flange assemblies. In the case of a ball valve, the valve body, as the name implies, is spherical and has an outer size larger than the connection openings in the valve body. Such a valve therefore has a valve housing with an internal geometry in which the valve seat and the valve body are placed. The valve body is typically joined in the vicinity of the valve body, requiring the largest internal dimension. Such valves are typically made of molded workpieces which are formed and molded to the desired geometry via mechanical machining. However, this process of shaping is quite costly for several reasons. Partly, the individual workpieces must be molded, and partly they must be handled and processed individually in a suitable machining center. Since the individual items are processed individually, this process is time consuming, despite the fact that modern and fast processes are used.
    In addition to the molded items being handled and processed prior to assembly around a valve seat and valve body, the material price also plays a major role. Brass or another suitable alloy is expensive and costs significantly more than, for example, ordinary weldable carbon steel.
    There is, therefore, an expressed desire to be able to manufacture valves for, for example, heating and cooling systems, for drinking water as for other purposes in steel, for example carbon steel or stainless steel, which are partly cheaper and which can be machined directly from a sheet metal or a modern production equipment. plumbing, in a faster and cheaper process than it is possible to cast and process cast brass items.
    Furthermore, there is a great desire to be able to completely avoid having screw joints or bolted flange joints in the valve body. At the same time, there is a great desire to avoid having to perform welding processes on a valve, as such processes require the respective items to be tightened at least once and that the welding process itself must be performed, which is of course expensive for the product.
    The object of the invention
    SUMMARY OF THE INVENTION It is an object of the invention to provide a solution to the above-mentioned problems in which a valve body is manufactured in one piece without joints from a workpiece with tubular end parts, such as a tubular part, where a minimum number of cutting and cutting work processes are performed and to avoid welding processes. or reduce these as much as possible prior to mounting a valve seat and valve body, which assembly is done prior to final shaping of the valve body itself.
    Description of the Invention
    These objects are achieved by the invention by a method of producing a valve which comprises at least providing a workpiece with tubular ends and on which a spindle guide is mounted. A valve spindle is mounted in the spindle guide and a valve body as well as one or more valve seats mounted in the central part of the workpiece. The central part of the valve body is formed prior to the shaping of the connecting ends, in that the shaping of the central part comprises reduction of the pipe diameter of the tubular end portions, and the connecting ends are then provided by shaping the end portions of the tubular workpiece.
    Hereby it is achieved that it becomes possible to make a valve by shaping the valve body after mounting parts in the central part of the valve housing, for example inhibiting valve seat, valve bodies and any gaskets, since a valve housing can be made which consists only of a single item which is formed in one piece without any kind of joints by welding, bo lining or similar joining methods.
    Therefore, since the valve body can be manufactured from a pipe piece, the invention is particularly suitable in the case of ordinary stop valves and flow valves. Advantageously, the invention can also be used in shaping other types of valves, e.g. three-way valves or the like with more than two connecting ends, the valve seat being in a central portion having a larger dimension and / or other shape than the connecting ends, and where it is therefore advantageous to place the valve body, valve seat and any gaskets in the central portion prior to for shaping the connection ends.
    The shaping of the central portion of the valve body and the reduction of the pipe diameter of the tubular end portions are preferably effected by plastic deformation, such as axial deformation with dies and / or mandrels in one or more steps. Radial deformation can also be used for the diameter reductions. Also, the shaping of the connection ends is preferably also effected by plastic deformation of the tubular end portions with dies and / or mandrels in one or more steps, including axial or radial deformation as described above. This makes it possible to adapt the shape of the central part of the valve body and especially the connection ends to the desired final shape. When several steps are used to design the connection ends, it becomes possible to design the same type of valve with several variants of connection ends, e.g. press-fit or flange terminations using another shaping tool, especially mandrels and / or dies, at a single or possibly several of the final shaping steps. This provides great flexibility in the production of the valves, since it is easy to switch from one variant to another. At the same time, the number of design tools, i.e. mandrels and / or matrices are reduced, as some of the design tools can be used for several product variants. This also helps to reduce the production costs of the valves.
    In addition, the method is suitable for forming cheaper materials than brass and other similar copper-based alloys normally used in molded valve housings, the design of the method permitting, for example, carbon steel or stainless steel or copper to be used to manufacture the valve body.
    Accordingly, the invention is also suitable for the manufacture of valves, which are characterized in that said valve housing is made of a workpiece with tubular end parts and that the valve body and one or more valve seats are mounted in the central part of the valve housing prior to forming the valve housing, the central portion of the valve body and then the connection ends are formed by plastic deformation of the tubular end portions, preferably with matrices and / or dome in one or more steps.
    Using this design of the valve body allows valve seats, valve bodies and any gaskets to be mounted in the semi-finished valve body, and then to design the valve body in its final shape. For many valves, especially ball valves, the diameter of the connecting ends is smaller than the central portion of the valve body where the valve seat and valve body are mounted. In addition, the valve body is allowed to be manufactured with substantially reduced wall thickness, which further contributes to significantly reduced production costs. The valve is thus also suitable for bmg in conjunction with other thin-walled materials, which are currently gaining ground in the industry and are increasingly used for both industrial solutions for pipe systems and for plumbing installations in residential construction. There are countless advantages to thin-walled pipes and fittings and the assembly methods are very simple, avoiding the time-consuming and costly work of thread cutting, welding or brazing.
    A variant of the method and valve comprises that the connection ends of the valve housing are subsequently annealed and cooled. This results in a relaxation of the valve body wall material at the connection ends, which results in the original properties of the material being restored with respect to corrosion resistance, which also results in a lower production cost of the finished product. The temperature of the metal during annealing depends on the type of steel or steel alloy the valve body is made of, but will typically be in the range of 800-1300 ° C, including preferably 900-1200 ° C, and especially in particular 1000-1100 ° C, the annealing being carried out, for example, at ca. 1050 ° C when acid-resistant stainless steel alloys are used.
    It is preferred that the annealing and subsequent cooling be done using a protective atmosphere, as any oxidation of the metal due to the presence of oxygen during annealing and relaxation is avoided when a protective atmosphere is used. This provides a longer service life for the valve, and also reduces the risk of the valve body rusting, e.g. when mounted in an area of high humidity. The protective atmosphere includes, for example, Argon (Ar), helium, (He), nitrogen gas (N2), or a combination of one or more of these gases. The protective gas may optionally contain smaller amounts of other gases, including e.g. hydrogen. A suitable protective gas for stainless steel is, for example, FORMIER ™ gas, which is nitrogen-based and contains a smaller amount of hydrogen, e.g. in an amount of up to 5-10%. If the valve body is made of copper, the inert gas is preferably based on argon, nitrogen or helium or mixtures thereof. In a variant of the method and the valve, the central part of the valve body is formed for the shaping of the connecting ends, in that the shaping of the central part is done by reducing the pipe diameter on the tubular end parts. Hereby, it is achieved that it becomes possible to produce a valve housing in which the diameter in the cross-section of the central part around the valve body and valve seat is greater than the diameter in the connection ends, for example in the manufacture of a ball valve, e.g. so-called full-flow ball valve, in which the diameter of the opening in the ball corresponds to the diameter of the connection ends and thus also the diameter of the pipe system. This necessitates that the central part of the valve housing, where the ball and valve seats are located, have a larger diameter than the connection transmitters. Thus, the method is particularly well suited for producing ball valves. In a variant of the method, the valve spindle is mounted simultaneously with the spindle guide being fixed to the workpiece with the tubular connection ends, resulting in fewer joints on the final valve housing, since the spindle guide can be designed as a unit, the spindle guide being provided with an end surface holding the valve spindle. in place in the spindle guide. When the threaded spigot is then secured to the central portion of the workpiece with the tubular end portions, the spindle guide is not designed to be threaded or flanged to the end portion holding the valve spindle in place in the spindle guide of the valve body. Alternatively, the valve spindle may be mounted after the spindle guide is mounted, the end of the valve spigot therefore having to include a threaded or flanged joint or the like for an end portion, as the only assembly on the valve body. Application description
    The invention will be described in the following with reference to the drawing, in which 1 shows a valve with a valve housing, with connecting ends designed in accordance with the invention; FIG. 2 shows a tubular blank with a spindle guide with valve spindle mounted; FIG. 3 is a cross-sectional view of the tubular blank of FIG. 2, where the valve body is mounted,
    FIG. 4 is a cross-sectional view of the tubular blank of FIG. 2, wherein the valve body is mounted and with indication of applied adhesive for use in positioning and / or fitting of valve seat, gaskets and / or retaining rings for the valve seat,
    FIG. 5 is a cross-sectional view of the tubular blank of FIG. 2, where valve seat, gaskets and any retaining rings for the valve seat are mounted; FIG. 6-8 show formation of the central portion of the housing with increased diameter relative to the end members; 9-11 show an example of shaping the connection ends. In the description of the figures, identical or similar elements will be denoted by the same reference numerals in the different figures. Thus, no explanation of all details will be given in connection with each figure / embodiment.
    Detailed Description of the Invention In FIG. 1, a valve 1 is shown with a valve housing 2, the valve housing 2 having a central part 3 and at least two connection ends 4, the valve housing 2 shown being formed with two connecting ends 4. The invention is not limited to use in flow valves, including ball valves, but can also used for, for example, stop valves, three-way valves and other common types of valves, however, the invention will be illustrated in the following in the manufacture of a ball valve. Thus, the invention is particularly well suited for the manufacture of ball valves.
    The connection ends 4 of a finished valve housing 2 are shown here with a design arranged as so-called press fittings. However, the actual shape of the connection ends 4 is irrelevant to the invention, but merely an example of how these connection ends 4 can be designed. In the central part 3 a valve body 5, e.g. with a through opening 6, in a valve seat 7. From the valve body 5, which in the shown valve is constituted by a traditional ball, as seen in FIG. 3-8, as is known from a plurality of ball valves, a valve spindle 8 extends through a spindle guide 9. By rotating this valve spindle 8 about its longitudinal axis, the valve body can be guided between an open position and a closed position.
    In the manufacture of the valve 1, the stem guide 9 and the valve stem 8 are preferably mounted prior to the shaping of the valve body 2. Next, the valve body 5 is mounted and attached to the valve stem 8, see fig. 3. In the variant shown, see FIG. 4-8, the valve seats 7 are optionally temporarily mounted with an adhesive 10, see FIG. 4, after which they are finally fixed, preferably by the two connection ends 4 being deformed into a smaller internal cross-section, as shown in FIG. 6-8. Thereby, the valve seats 7 are locked in their position relative to both the valve body 5 and to the valve housing 2. Such deformation may include locking of the valve seat or valve seats 7 in a given position, the valve housing 2 being deformed by reducing the radius in the end portions 4 but alternatively, a deformation of valve housing 2 as well as of a fixing member 13 on the valve seat may also take place to lock the position of the valve seat 7 in the valve housing 2.
    Preferably, the molding of the central portion 2 of the valve body and the connecting ends 4 is effected by axial plastic deformation in one or more steps, e.g. two, three, four or more steps, using one or more shaping tools such as mandrels and / or dies. Figs. 5-8 shows an example of possible shaping of the central portion 2 of the valve body, wherein the diameter of the end portions 4 is gradually reduced relative to the diameter of the central portion 2 of the housing while simultaneously forming the central portion 2 of the valve body by axial plastic deformation with different matrices. and thorns in three steps, see especially Figs. 6-8 to obtain the final shape of the central part of the valve body. However, it is possible to use fewer steps, e.g. one or two, or more steps, e.g. four, five or more during the axial deformation, the shape of the matrices and / or mandrels used in the diameter reduction being adapted to the number of steps used. The number of steps can be varied as needed, taking into account factors such as the thickness of the valve body, the material alloy material properties of plastic deformation, and the size of the desired diameter reduction of the end portions. As seen in Figures 1 and 9-11, the diameter of the central portion 2 of the valve body is larger than the diameter of the connecting ends 4, as is generally the case with conventional ball valves.
    Then the connection ends 4 are shaped to their final shape. Figs. 9-11, shows an example of possible and non-limiting design of a valve housing with ends of the press-fit type. Here, the connection ends 4 are designed in at least one step, fig. 9 shows that the diameter of the end portions is widened by one or more mandrels, optionally with associated matrices, to obtain a slightly increased diameter in the middle part 4a and a further increased diameter in the outer part 4b of the end parts 4. Then the outer end is shaped as shown in FIG. 10-11, wherein a die, as well as any associated judgment, first reduces the diameter of the outer end 4c and a second die and optionally associated judgment thereafter provides a final wound shape on the outer portion 4b of the connection end. As an alternative to axial deformation, radial deformation can advantageously be used in diameter reductions, with matrices clamping around the workpiece to reduce the pipe diameter.
    However, it is possible to design the connection ends 4 in any other desired manner, since it is possible to vary the number of steps as well as the shape of the matrices and / or mandrels which provide the desired shape on the connection ends 4. Another form on the connection ends, e.g. . providing a flange assembly at the connection ends 4 may be provided by designing shaping tools, i.e. matrices and / or dome, for the axial and / or radial plastic deformation, so as to obtain a desired shape on the connection ends 4. The design of the invention allows, for example, copper or carbon steel or stainless steel, to inhibit acid-resistant stainless steel alloys manufacture of the valve body and that the valve body can be manufactured in one piece, so that it is no longer necessary to design the valve body with joints. This makes it possible to manufacture the valve body in thin-walled materials, and the valve can be manufactured in fewer steps, and the total production price per valve can be reduced.
    After forming the connection ends 4 of the valve body 2, the valve ends 4 of the valve housing can preferably be annealed and subsequently cooled. Hereby it is achieved that the annealing and subsequent cooling of the metal, especially steel types, causes the original properties of the material to be restored with respect to corrosion resistance.
    The temperature of the metal during annealing depends on the type of steel or steel alloy the valve body is made of, but will typically be in the range of 800-1300 ° C, preferably inhibits 900-1200 ° C, and in particular inhibits 1000-1100 ° C, for example by annealing at ca. 1050 ° C when using acid-resistant stainless steel.
    The annealing, shaping and subsequent cooling takes place under a protective atmosphere. The protective atmosphere includes, for example, Argon (Ar), helium, (He), nitrogen gas (N2) or a combination of one or more of these gases. The protective gas may optionally contain smaller amounts of other gases, e.g. hydrogen. A suitable shielding gas for solid steel is, for example, FORMIER ™ gas, which is nitrogen-based and contains a smaller amount of hydrogen, e.g. in an amount of up to 5-10%. If the valve body is made of copper, the inert gas is preferably based on argon, nitrogen or helium or mixtures thereof.
    Design of the valve housing according to the invention is particularly suitable for fully automatic production. The automation of production can e.g. happen using robotic technology.
    权利要求:
    Claims (9)
    [1]
    A method of manufacturing a valve, wherein the valve comprises a valve body, having a central portion and having two or more connecting ends, said connecting ends extending away from the central portion and wherein a valve body is arranged internally within the central portion. , which is arranged in a valve seat, characterized in that the manufacture of said valve housing comprises at least the following steps: - providing a workpiece with tubular ends and on which a spindle guide is mounted and with a valve spindle mounted in the spindle guide and a valve body and one or more valve seats mounted in the central part of the workpiece, - the central part of the valve housing is formed prior to the design of the connection end, the design of the central part comprising reduction of the pipe diameter on the tubular end parts and the connection ends. is then provided by shaping the end portions of the tubular blank.
    [2]
    A method according to claim 1, characterized in that the shaping of the central part of the valve body and the reduction of the pipe diameter of the tubular end parts are effected by plastic deformation with dies and / or mandrels in one or more steps.
    [3]
    Method according to claim 1 or 2, characterized in that the shaping of the connection ends is by plastic deformation of the tubular end parts with matrices and / or dome in one or more steps.
    [4]
    Method according to any one of claims 1-3, characterized in that the connection ends of the valve housing are subsequently annealed.
    [5]
    Method according to any one of claims 1-4, characterized in that the valve spindle is mounted simultaneously with the spindle guide or after the spindle guide is mounted.
    [6]
    Method according to any one of claims 1-5, characterized in that the valve is a ball valve.
    [7]
    A valve for regulating a fluid, the valve comprising a valve body, having a central portion and having one, two or more connecting ends, said connecting ends extending away from the central portion, where an interior of the central portion is arranged. valve body, wherein the valve body is arranged in a valve seat and connected to a valve spindle, wherein the valve spindle is arranged in a spindle guide on the valve housing, characterized in that said valve housing is made of a workpiece with tubular end parts and that the valve body and one or more valve seats are mounted in the central portion of the valve housing prior to forming the valve housing, the central portion of the valve housing being formed first by reducing the tubular diameter of the tubular end portions, preferably by plastic deformation with matrices and / or dome in one or more steps, and then the connection ends being shaped by plastic. deformation of the tubular end portions, preferably with matrices and / or judgment e in one or more steps.
    [8]
    Valve according to claim 7, characterized in that the valve is a ball valve.
    [9]
    Valve according to Claim 7 or 8, characterized in that the connection ends of the valve housing are annealed after forming.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DK177970B1|2015-02-09|
    WO2014202096A1|2014-12-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3490734A|1966-02-14|1970-01-20|Rockwell Mfg Co|Ball valves|
    US3819150A|1971-08-16|1974-06-25|Saab Scania Ab|Ball plug valve|
    US4545564A|1982-09-10|1985-10-08|Krosoczka Joseph D|Valve|
    US20030001125A1|2000-02-03|2003-01-02|Shigeo Kitazawa|Ball valve and production method therefor|
    JPS58209485A|1982-05-28|1983-12-06|Kobe Steel Ltd|Production of valve body for ball valve|
    US4546790A|1983-04-07|1985-10-15|Klinger Ag|Fluid valve|
    DE3463965D1|1983-04-19|1987-07-02|Klinger Ag|Fitting insertable in a conduit line|
    JPH0470103B2|1989-03-01|1992-11-10|Takasago Netsugaku Kogyo Kk|
    JP2838716B2|1989-04-28|1998-12-16|株式会社キッツ|Ball valve|
    JP2540394Y2|1990-07-13|1997-07-02|高砂熱学工業株式会社|Rotary valve seal structure|
    US6425571B1|2000-08-09|2002-07-30|Parker-Hannifin Corporation|Valve and method for forming valve|CN107335973A|2017-07-04|2017-11-10|重庆都英科技有限公司|A kind of processing technology of two chambers plug|
    CN108500565A|2018-04-02|2018-09-07|江西申暖通科技有限公司|The manufacture craft of small-bore galvanized sheet thin wall tee|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DK201370335A|DK177971B1|2013-06-20|2013-06-20|Spring gasket for valve housing|
    DK201370335|2013-06-20|
    DK201370503|2013-09-09|
    DK201370503A|DK177970B1|2013-06-20|2013-09-09|Process for manufacturing a valve and valve|DK201370503A| DK177970B1|2013-06-20|2013-09-09|Process for manufacturing a valve and valve|
    PCT/DK2014/050180| WO2014202096A1|2013-06-20|2014-06-19|Valve and method for making a valve|
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