CN2926698Y - Fixed membrane metal sealed spherical valve - Google Patents
Fixed membrane metal sealed spherical valve Download PDFInfo
- Publication number
- CN2926698Y CN2926698Y CN 200620033738 CN200620033738U CN2926698Y CN 2926698 Y CN2926698 Y CN 2926698Y CN 200620033738 CN200620033738 CN 200620033738 CN 200620033738 U CN200620033738 U CN 200620033738U CN 2926698 Y CN2926698 Y CN 2926698Y
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- Prior art keywords
- ring
- valve
- valve seat
- diaphragm
- membrane
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000002184 metal Substances 0.000 title claims abstract description 20
- 239000012528 membrane Substances 0.000 title abstract 8
- 238000007789 sealing Methods 0.000 abstract description 19
- 230000004888 barrier function Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a metal sealing ball valve of fixed sphere membrane type. The ball valve comprises a valve cover (1), a spring (2), a support ring of valve base (3), a valve base (4), a metal membrane (5), a pressure ring of the membrane (6), a fixing ring (7), a barrier ring (8), a ball body (9), a valve rod (10), and a bolt (11). The support ring of valve base (3), the pressure ring of the membrane (6), the fixing ring (7) are installed on step of the valve cover (1) in sequence. The barrier ring (8) which limits position of the fixing ring (7) is arranged in ring groove. The bolt (11) is screwed in the fixing ring (7), with front of the bolt leans against the pressure ring of the membrane (6). The membrane (5) is welded on the bolt (11) and pressed on the valve cover (1) by the pressure ring of the membrane (6). The spring (2) is arranged between the valve cover (1) and bottom of the support ring of valve base (3). Compared with current technologies, the utility model achieves ANIB16.104 V1 or even zero leakage under high temperature (830DEG C) and high pressure (2500LB), and affords good popularity, compatibility and maintainability.
Description
Technical field
The utility model relates to a kind of metal seal ball valve, particularly a kind of fixedly ball diaphragm type metal seal ball valve.It is applicable to high temperature, the high pressure in oil, chemical industry, smelting, power station and nuclear industry field, the switch and the flow control of abrasiveness medium pipeline.
Background technique
Ball valve divides according to its sealed nature, and soft sealing ball valve and hard seal ball valve are arranged, and the soft sealing ball valve valve seat is generally PTFE class plastics, because of its materials limitations, generally is used for temperature less than 250 ℃, fluid that medium is purer.And for high temperature (greater than 250 ℃) or the strong operating mode of abrasion of particles is arranged, then must adopt hard seal ball valve.The valve seat of hard seal ball valve is a metallic material, and surface process cure process, and complete metal covering by high hardness seals between its spheroid and the sealing surface of seat, and this ball valve is divided into fixedly ball and two kinds of structures of floating ball again according to structure.Floating ball generally is used for low-pressure, small-bore ball valve because of its structural limitations, then must adopt fixedly this structure of ball to bigbore ball valve.When metal seal ball valve uses in worst hot case, what at first need to solve is the high temperature expansion issues of metallic material, general hard seal ball valve is when worst hot case uses, between spheroid and the sealing surface of seat often because of the expansion of material, cause the valve opening and closing difficulty, even it is dead to expand, for the sealing effect that guarantees fixing ball formula hard seal ball valve and overcome the high temperature lower sphere and valve seat causes the valve opening and closing difficulty because of material expands, just require valve seat to float, piston effect is arranged, have enough spaces to satisfy the needs that high temperature expands simultaneously.
At present, the structure of the floating type valve seat ball valve of common employing is to be provided with helical spring or butterfly spring between valve seat and valve body, and adopts the round section joint ring sealing.This ball valve is that the high temperature that utilizes spring to absorb between spheroid and the valve seat expands, and provide the initial sealing specific pressure, rely on round section joint ring and valve seat to constitute piston and reach piston effect, the ball valve sealing performance of this structure is fine, versatility, interchangeability and maintainalbility are also fine, and the temperature tolerance of not enough is round section joint ring is poor, and serviceability temperature is restricted, after temperature surpasses 250 ℃, can't use.
Common metal seal ball valve on the present market, also have some to adopt the material filling type structure that valve seat is sealed, promptly between valve seat and valve body, fill the sealing material of asbestos, graphite-like, rely on the elasto plastic deformation of packing material to produce lateral seal power realization sealing.This structure relies on length of spring compressed that seal pressure between filler and the valve seat is provided fully, pressure medium is high more, the sealing pretightening force that requires spring to provide is big more, after surpassing the 300LB level, sealing will run into certain difficulty, heavy caliber (6 " more than) particularly; the rigidity of valve seat also faces a severe test when output proposes high requirement to spring; and this structure also is subjected to the restriction of temperature; and after medium temperature reach a certain height; spring, asbestos and graphite can produce yield deformation, and sealing force descends rapidly, sealing reliability reduces.
Also have some to adopt bellows structure, as the disclosed a kind of bellows metal seal ball valve of patent CN02143055.1, the valve seat and the bellows of this ball valve weld together, and bellows and valve body weld together.The ball valve of this structure has two big shortcomings: (1) does not have piston effect.Though this structure does not have nonmetallic material, because fear the dielectric damages bellows, medium and bellows are isolated, cause the seal pressure of valve seat and sphere to provide by spring.Under worst hot case, spring can weaken, and directly influences its sealability.And the ball valve of this structure, though valve seat floats, there is not piston effect, so high pressure sealing performance is also unreliable.(2) ball valve of this structure has been because valve seat, bellows, valve body have been welded in together, so versatility, interchangeability are all very poor, and field maintenance is very difficult, and valve seat is difficult to change.And the difficulty of processing of bellows is very big, influenced by welding quality, so the manufacture cost height.All of these factors taken together has all limited to its application and development.
Summary of the invention
At the existing problem of poor sealing performance when fixedly ball formula metal seal ball valve uses under high temperature, high pressure operating mode, the purpose of this utility model be to provide a kind of when high temperature (830 ℃), high pressure (2500LB) use down its sealability can reach ANIB16,104Class VI level even zero leakage, and the good fixedly ball diaphragm type metal seal ball valve of versatility, interchangeability and maintainalbility.
For achieving the above object, the solution that the utility model adopts is: this fixedly ball diaphragm type metal seal ball valve comprise valve gap, spring, the valve seat support ring, valve seat, metal diaphragm, the diaphragm pressure ring, fastening ring, back-up ring and screw, be processed with step and annular groove in the valve gap, the valve seat support ring, diaphragm pressure ring and fastening ring are installed in the step of valve gap successively, the back-up ring of restriction fastening ring position is installed in the annular groove, the pressing diaphragm ring set is contained on the valve seat, screw is threaded onto in the fastening ring, its front end is tight against on the diaphragm pressure ring, diaphragm and valve seat weld together, be pressed on the valve gap by the diaphragm pressure ring again simultaneously, the valve seat support ring is installed in the valve gap step of valve seat front, spring is located between the bottom of valve gap and valve seat support ring, and the other end of valve seat support ring is tight against on diaphragm and valve seat.
Metal diaphragm in the technique scheme is made through special process with stainless steel material, and it has good resiliently deformable and sealability, the utility model scheme relies on the deformation of this metal diaphragm to realize that valve seat floats just, reaches piston effect.
The utility model is not owing to be subjected to the restriction of nonmetallic material, so can under 830 ℃ operating mode, normally use, because guaranteeing valve seat, metal diaphragm can realize good piston effect simultaneously, so the utlity model has good sealability, its sealability can reach ANIJ16.104Class VI level even zero leakage under 830 ℃ of high temperature, 2500LB high pressure; Structure of the present utility model is simple relatively simultaneously, versatility, interchangeability and maintenance are all relatively good, manufacture difficulty is also little, no matter any damage parts wherein, can replace, even valve seat or spheroid damage, after also can exchanging again facing-up come into operation, and can reach the requirement of ANIB16.104Class V-VI level.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Description of drawings
Fig. 1 is sectional view of the present utility model (hatching does not draw among the figure).
Fig. 2 is the partial enlarged drawing of diaphragm seal structure division among Fig. 1.
Among the figure: 1-valve gap, 2-spring, 3-valve seat support ring, 4-valve seat, 5-diaphragm, 6-diaphragm pressure ring, 7-fastening ring, 8-back-up ring, 9-spheroid, 10-valve rod, 11-screw
Embodiment
As Fig. 1, shown in Figure 2, the utility model comprises valve gap 1, spring 2, valve seat support ring 3, valve seat 4, metal diaphragm 5, diaphragm pressure ring 6, fastening ring 7, back-up ring 8, spheroid 9, valve rod 10 and screw 11, be processed with step and annular groove in the valve gap 1, valve seat support ring 3, diaphragm pressure ring 6 and fastening ring 7 are installed in the step of valve gap 1 successively, back-up ring 8 is installed in the annular groove, its effect is the position of restriction fastening ring 7, diaphragm pressure ring 6 is sleeved on the valve seat 4, screw 11 is threaded onto in the fastening ring 7, its front end is tight against on diaphragm pressure ring 6, diaphragm 5 welds together with valve seat 4, diaphragm pressure ring 6 is pressed on diaphragm 5 on the valve gap 1 under the effect of screw 11, thereby realizes the static seal between valve seat 4 and the valve gap 1.Valve seat support ring 3 is installed in the valve gap step of valve seat 4 fronts, and spring 2 is located between the bottom of valve gap 1 and valve seat support ring 3, and it provides the initial sealing specific pressure between valve seat 4 and the spheroid 9.
The utility model is because diaphragm 5 and spring 2 all have good elastic deformation characteristic, therefore not only can be absorbed in the expansion of worst hot case lower sphere 9 and valve seat 4, and can be in actual conditions, under the promotion of line pressure difference, allow valve seat 4 as piston, be close on the spheroid 9, the line pressure difference is big more, pastes tightly more, so there are enough seal pressures to guarantee sealing effect between valve seat 4 and the spheroid 9.
The utility model can be made into one-way sealing according to actual needs, also can make two way sealed or multi-sealed.
Claims (1)
1. fixing ball diaphragm type metal seal ball valve, it comprises valve gap (1), spring (2), valve seat (4), spheroid (9) and valve rod (10), it is characterized in that: it also comprises valve seat support ring (3), metal diaphragm (5), diaphragm pressure ring (6), fastening ring (7), back-up ring (8) and screw (11), valve gap is processed with step and annular groove in (1), valve seat support ring (3), diaphragm pressure ring (6) and fastening ring (7) are installed in the step of valve gap (1) successively, the back-up ring (8) of restriction fastening ring (7) position is installed in the annular groove, diaphragm pressure ring (6) is sleeved on the valve seat (4), screw (11) is threaded onto in the fastening ring (7), its front end is tight against on diaphragm pressure ring (6), diaphragm (5) welds together with valve seat (4), be pressed on the valve gap (1) by diaphragm pressure ring (6) again simultaneously, valve seat support ring (3) is installed in the valve gap step of valve seat (4) front, spring (2) is located between the bottom of valve gap (1) and valve seat support ring (3), and valve seat support ring (3) is tight against on diaphragm (5) and valve seat (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620033738 CN2926698Y (en) | 2006-04-07 | 2006-04-07 | Fixed membrane metal sealed spherical valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620033738 CN2926698Y (en) | 2006-04-07 | 2006-04-07 | Fixed membrane metal sealed spherical valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2926698Y true CN2926698Y (en) | 2007-07-25 |
Family
ID=38280942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620033738 Expired - Fee Related CN2926698Y (en) | 2006-04-07 | 2006-04-07 | Fixed membrane metal sealed spherical valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2926698Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518828A (en) * | 2011-11-12 | 2012-06-27 | 中山铁王流体控制设备有限公司 | A high temperature and high pressure floating ball hard seal slag lock ball valve |
| CN103016775A (en) * | 2011-09-22 | 2013-04-03 | 姜欣芳 | Long and short handle welding type asymmetric valve ball and ball valve made from same |
| CN103249976A (en) * | 2010-12-08 | 2013-08-14 | 卡梅伦国际有限公司 | ball valve |
| CN107559449A (en) * | 2017-10-20 | 2018-01-09 | 上海阀门厂股份有限公司 | A kind of multi-state valve sealing structure |
| CN112081945A (en) * | 2020-09-27 | 2020-12-15 | 九方流体系统技术(深圳)有限公司 | Diamond Coated Wear Resistant Diaphragm Ball Valve |
| CN114110242A (en) * | 2021-11-16 | 2022-03-01 | 上海阀门厂股份有限公司 | Double-diaphragm sealing structure |
| CN115574099A (en) * | 2022-09-27 | 2023-01-06 | 济南新材料产业技术研究院 | Bellows sealing valve of rigid support floats |
-
2006
- 2006-04-07 CN CN 200620033738 patent/CN2926698Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103249976A (en) * | 2010-12-08 | 2013-08-14 | 卡梅伦国际有限公司 | ball valve |
| CN103016775A (en) * | 2011-09-22 | 2013-04-03 | 姜欣芳 | Long and short handle welding type asymmetric valve ball and ball valve made from same |
| CN102518828A (en) * | 2011-11-12 | 2012-06-27 | 中山铁王流体控制设备有限公司 | A high temperature and high pressure floating ball hard seal slag lock ball valve |
| CN107559449A (en) * | 2017-10-20 | 2018-01-09 | 上海阀门厂股份有限公司 | A kind of multi-state valve sealing structure |
| CN112081945A (en) * | 2020-09-27 | 2020-12-15 | 九方流体系统技术(深圳)有限公司 | Diamond Coated Wear Resistant Diaphragm Ball Valve |
| CN114110242A (en) * | 2021-11-16 | 2022-03-01 | 上海阀门厂股份有限公司 | Double-diaphragm sealing structure |
| CN114110242B (en) * | 2021-11-16 | 2024-02-09 | 上海阀门厂股份有限公司 | Double-diaphragm sealing structure |
| CN115574099A (en) * | 2022-09-27 | 2023-01-06 | 济南新材料产业技术研究院 | Bellows sealing valve of rigid support floats |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sichuan Gelin Liquid Control Equipment Co., Ltd. Assignor: Li Hong Contract fulfillment period: 2009.8.15 to 2019.8.15 Contract record no.: 2009510000066 Denomination of utility model: Fixed membrane metal sealed spherical valve Granted publication date: 20070725 License type: Exclusive license Record date: 20090921 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.8.15 TO 2019.8.15; CHANGE OF CONTRACT Name of requester: SICHUAN GELIN FLUID CONTROL EQUIPMENT CO., LTD. Effective date: 20090921 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070725 Termination date: 20140407 |