CN202118293U - Integral high-pressure ball valve - Google Patents
Integral high-pressure ball valve Download PDFInfo
- Publication number
- CN202118293U CN202118293U CN2011202108385U CN201120210838U CN202118293U CN 202118293 U CN202118293 U CN 202118293U CN 2011202108385 U CN2011202108385 U CN 2011202108385U CN 201120210838 U CN201120210838 U CN 201120210838U CN 202118293 U CN202118293 U CN 202118293U
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- valve
- valve seat
- valve body
- seat
- pressure ball
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Abstract
The utility model relates to an integral high-pressure ball valve, which comprises a valve body, a valve core and a valve rod, wherein the valve core and the valve rod are arranged in the valve body. Two valve seats hermetically matched with the valve core are arranged on two sides of the valve core in the valve body respectively. The outer periphery of one end of the sealing valve seat on one side of a valve core medium outlet is a cylindrical face, the inner periphery of the valve body matched with the cylindrical face is a conical face, and the cylindrical face and the conical face are in sealed interference fit. The cylinder of the cylindrical face formed on the sealing valve seat is concentric with a conical cavity of the conical face formed in the valve body, and a shaft shoulder portion is formed by the stepped sealing valve seat and matched with a corresponding step of the valve body in a positioning manner. The integral high-pressure ball valve overcomes the shortcomings that the valve seat is easy to be damaged by floating gaps of a traditional ball valve in the prior art and the design without an outlet end valve seat lowers the sealing performance of the valve. By means of the design, an inlet end valve seat can automatically compensate friction and pressure of the sealing face and the size variation caused by temperature fluctuation, and the outlet end valve seat and the valve body can be centered independently, thereby achieving reliable sealing. The integral high-pressure ball valve has the advantages that the valve is compact in structure, precise in axial positioning and long in service life.
Description
Technical field
The utility model relates to a kind of integral type high-pressure ball valve.
Background technique
Ball valve is widely used in the control unit of making pipeline fluid in the various career fields, and it is little that ball valve has fluid resistance, opens and closes rapidly the better simply advantage of structure.Traditional ball valve generally adopts " floating " " double seal ring " design, and is poor at HTHP, and (hydrophobic, blowdown and drum like power plant discharge sky high particle; The coking process of petrochemical industry etc.) under the operating mode, the place that the gap provides wearing and tearing and particle to gather to fed sheet of a media around the valve seat of two " floating ", the function that has directly influenced valve realizes, will damage valve seat when serious, causes the fed sheet of a media leakage and loses efficacy.External some hard seal ball valve that it is introduced; The structure that in design, does not have the outlet end valve seat mainly is because will avoid outlet end the interior phenomenon of leaking of dividing to occur, still; As a rule; Because valve body material and spool material are difference different metallic materials, under the thermal stress effect, have the different metallic expansivity, this must reduce the valve seal performance.
Summary of the invention
For the flying height that overcomes conventional ball valve in the existing technology damages valve seat easily; The design of No way out end valve seat reduces the problem of valve seal performance, and the utility model provides a kind of integral type high-pressure ball valve, and the project organization of this integral type high-pressure ball valve is compact; Axially locating is accurate; Good seal performance, long service life is suitable for processing.
The utility model solves the technological scheme that its technical problem adopted: comprise spool, valve rod in valve body and the valve body; Spool both sides in the valve body are equipped with the valve seat that is sealed and matched with it; The seal valve seat one end periphery of spool media outlet one side is the cylndrical surface; Be conical surface with week in the valve body that it matches, the cylndrical surface is sealed and matched with conical surface formation interference.
The conical cavity that forms conical surface in the cylindrical body that forms the cylndrical surface on the seal valve seat and the valve body is concentric, and seal valve seat is a stepped formation shaft shoulder portion, locatees with the step of corresponding valve body to cooperate.
In the valve body of spool medium inlet one side the support valve seat is set, supports valve seat and join through top pressure spring and guide valve seat, guide valve seat one end is spacing by the stop ring snap ring on the valve interior wall.
The entrance point and the connecting body of valve body are weldingly connected, and an end of connecting body inserts in the valve body, the equal diameters of its insertion end diameter and roof pressure valve seat.
The utility model is through above-mentioned concrete design; This a pair of sealing pair of valve seat and spool is when thermal stress changes; But can obtain same thermal expansion ratio, the also wearing and tearing of automatic compensation sealing face and the dimensional changes that pressure, temperature fluctuation cause; Valve seat and valve body can independently be felt relieved, thereby realize reliable sealing, have project organization compactness, axially locating precisely, long service life, be suitable for the advantage of processing.
Description of drawings
The detailed content of the utility model is described below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the enlarged diagram of valve body and seal valve seat assembly structure.
Embodiment
As shown in the figure; The utility model comprises spool 2, the valve rod 3 in valve body 1 and the valve body 1; Spool 2 both sides in the valve body 1 are equipped with the valve seat that is sealed and matched with it; The seal valve seat 4 one end peripheries of spool 2 media outlets one side are the cylndrical surface, and week is conical surface in the valve body 1 that matches with it, and cylndrical surface and conical surface form interference and be sealed and matched.The conical cavity that forms conical surface in the cylindrical body that forms the cylndrical surface on the seal valve seat 4 and the valve body 1 is concentric, and seal valve seat 4 is a stepped formation shaft shoulder portion 10, locatees with the step 11 of corresponding valve body 1 to cooperate.The combination of conical surface has the function of autonomous centering, and interference fit, and as long as the sealing when designing and calculating during low pressure must specific pressure, the relation of seal pressure, seal face materials specific pressure allowable satisfies q
MF＜q＜(q) can guarantee that outlet end does not have leakage.Strict valve seat shaft shoulder portion 10 sizes and valve body step 11 sizes are as axially locating; Can guarantee the central lines of the rotating center and the valve rod 2 of spool 2 effectively; Thereby avoid when valve opening and closing, produce wearing and tearing, so that produce external leakage to stuffing box packing because of there is radial displacement in valve rod 2.Be provided with in the valve body 1 of spool 2 medium inlets one side and support valve seat 5, support valve seat 5 and join through top pressure spring 6 and guide valve seat 7, guide valve seat 7 one ends are spacing by the stop ring snap ring 8 on valve body 1 inwall.Guide valve seat 7 supports valve seat 5 through top pressure spring 6 roof pressures, can compensate the wearing and tearing of sealing surface of seat and the dimensional changes that pressure, temperature fluctuation cause automatically, thereby realizes reliable sealing.The entrance point of valve body 1 and connecting body 9 are weldingly connected; Its Placement can be that an end of connecting body 9 inserts in the valve body 1; Its external seam welding links to each other, and the insertion end diameter of connecting body 9 and the equal diameters of roof pressure valve seat 5, this structure can improve the convenience of ball valve assembling greatly.Above-described embodiment describes the preferred implementation of the utility model integral type high-pressure ball valve; Be not that design and scope to model utility limits; Under the prerequisite that does not break away from the utility model scheme; Various external form modification and improvement that those skilled in the art make the technological scheme of the utility model all should fall into the protection domain of the utility model integral type high-pressure ball valve.
Claims (4)
1. integral type high-pressure ball valve; Comprise spool, valve rod in valve body and the valve body; Spool both sides in the valve body are equipped with the valve seat that is sealed and matched with it; Seal valve seat (4) the one end peripheries that it is characterized in that spool (2) media outlet one side are the cylndrical surface, and week is conical surface in the valve body that matches with it (1), and cylndrical surface and conical surface form interference and be sealed and matched.
2. integral type high-pressure ball valve according to claim 1; It is concentric with the conical cavity of the interior formation of valve body (1) conical surface to it is characterized in that seal valve seat (4) is gone up the cylindrical body that forms the cylndrical surface; Seal valve seat (4) is a stepped formation shaft shoulder portion (10), cooperates with step (11) location of corresponding valve body (1).
3. integral type high-pressure ball valve according to claim 1 and 2; It is characterized in that being provided with in the valve body (1) of spool (2) medium inlet one side and support valve seat (5); Support valve seat (5) and join through top pressure spring (6) and guide valve seat (7), guide valve seat (7) one ends are spacing by the stop ring snap ring (8) on valve body (1) inwall.
4. integral type high-pressure ball valve according to claim 3 is characterized in that the entrance point of valve body (1) and connecting body (9) are weldingly connected, and an end of connecting body (9) inserts in the valve body (1), the equal diameters of its insertion end diameter and roof pressure valve seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202108385U CN202118293U (en) | 2011-06-21 | 2011-06-21 | Integral high-pressure ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202108385U CN202118293U (en) | 2011-06-21 | 2011-06-21 | Integral high-pressure ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118293U true CN202118293U (en) | 2012-01-18 |
Family
ID=45459360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202108385U Expired - Fee Related CN202118293U (en) | 2011-06-21 | 2011-06-21 | Integral high-pressure ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047916A1 (en) * | 2017-09-08 | 2019-03-14 | 江苏科维仪表控制工程有限公司 | Manual high-temperature and high-pressure hydrophobic ball valve having superior sealing property |
| CN111503305A (en) * | 2020-04-10 | 2020-08-07 | 苏州安特威阀门有限公司 | Drainage ball valve for power industry |
-
2011
- 2011-06-21 CN CN2011202108385U patent/CN202118293U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047916A1 (en) * | 2017-09-08 | 2019-03-14 | 江苏科维仪表控制工程有限公司 | Manual high-temperature and high-pressure hydrophobic ball valve having superior sealing property |
| CN111503305A (en) * | 2020-04-10 | 2020-08-07 | 苏州安特威阀门有限公司 | Drainage ball valve for power industry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20170621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |