CN203703226U - Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure - Google Patents
Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure Download PDFInfo
- Publication number
- CN203703226U CN203703226U CN201320840155.7U CN201320840155U CN203703226U CN 203703226 U CN203703226 U CN 203703226U CN 201320840155 U CN201320840155 U CN 201320840155U CN 203703226 U CN203703226 U CN 203703226U
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- Prior art keywords
- valve seat
- ring
- metal
- double
- blocking
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- Expired - Lifetime
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- 239000002184 metal Substances 0.000 title claims abstract description 63
- 238000007789 sealing Methods 0.000 title claims abstract description 46
- 239000000428 dust Substances 0.000 claims description 16
- 238000005253 cladding Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract 3
- 239000000956 alloy Substances 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a double-piston double-blocking hard sealing valve seat with a metal C-shaped ring sealing structure. The double-piston double-blocking hard sealing valve seat comprises a first dustproof ring, a valve seat supporting ring, a blocking ring, a pair of first metal C-shaped rings, a second dustproof ring, a spring, a second metal C-shaped ring, an inner hexagonal bolt, a valve seat pressing ring, a ball and a hard alloy overlaying layer, wherein the first dustproof ring and the second dustproof ring are arranged on the valve seat supporting ring; the blocking ring is arranged between the first metal C-shaped rings; the spring is arranged below the inner hexagonal bolt; the valve seat pressing ring is adhered to the inner hexagonal bolt; the second metal C-shaped ring and the hard alloy overlaying layer are arranged on the ball. The double-piston double-blocking hard sealing valve seat has the advantages of good sealing property, simple structure and wide temperature application range. According to a double-piston double-blocking hard sealing valve structure, the valve seat can flexibly float in a specific space without blocking when a valve is under an environment where various acidic, neutral or alkaline media exist, the pressure is 0-45MPa and the temperature is minus 196 DEG C to 540 DEG C, and the valve seat and a valve body can be effectively sealed.
Description
Technical field
The utility model relates to the hard seal valve seat of the two blocking-up of double-piston, relates in particular to one and is provided with the hard seal valve seat of the two blocking-up of metal C type circle sealing double-piston.
Background technique
At present, on domestic and international market, fix hard seal ball valve and all need to adopt single valve seat list piston structure, and it can not be adapted to various working condition requirements completely.First, can not realize the sealing of valve and the requirement of the directed safety relief of valve body lumen; Secondly, to valve seat require be valve seat need to be in specific cavity space can effective sealing between valve seat and valve body, can float flexibly and reach effective sealing to meet between valve seat and valve closing member spheroid again.And more employing O shape rubber seal or two kinds of structures of graphite packing seal ring of sealing means between hard seal ball valve seat and valve body, but adopt O shape rubber seal to be subject to the restriction of rubber material, have influence on valve entirety Applicable temperature and Applicable media and be all restricted; The 3rd, the structure that adopts graphite packing seal ring is that graphite packing seal ring needs very large pretension specific pressure could meet the seal request between valve seat and valve body, and the pretension specific pressure that increases graphite packing seal ring will cause floating valve seat dumb, also easily stuck, and cause valve seat and valve closing member seal failure; In addition, structure that existing metal sealing valve seat can be realized double-piston effect is very complicated, mechanism is huge, and installing space is larger, causes valve weight large.Therefore, in prior art, lack the Seal Design between a kind of valve seat and valve body that can replace single valve seat list piston structure, can ensure valve seat in space, can float flexibly, without jam, make can effectively seal between valve seat and valve body, be not subject to again the restriction of temperature and medium, structure is relatively simple.
Summary of the invention
For above the deficiencies in the prior art, the utility model provides a kind of hard seal valve seat of the two blocking-up of double-piston that is provided with metal C type circle sealing configuration, by metal C type circle and built-up welding sealing surface are set, thereby make to ensure the sealability of metal hard-sealing ball valve, meet the actual requirement using.
To achieve these goals, the technological scheme that a kind of hard seal valve seat of the two blocking-up of double-piston that is provided with metal C type circle sealing configuration described in the utility model is taked is: described valve seat comprises the first dust ring, valve seat bracing ring, back-up ring, the first metal C type circle, the second dust ring, spring, the second metal C type circle, hexagon socket head cap screw, valve seat pressure ring, spheroid, weld-deposited cladding.Described the first dust ring and the second dust ring are arranged on valve seat bracing ring, described back-up ring is arranged between a pair of the first metal C type circle, described spring is arranged at hexagon socket head cap screw below, described valve seat pressure ring and hexagon socket head cap screw fit together, and the second metal C type circle and weld-deposited cladding are arranged on spheroid.
When valve is during in complete shut-down position upstream entrance pressure, when before and after valve seat, pressure difference is lower, the spring of valve seat promotes valve seat integrated moving, and the second metal C type circle is contacted with spheroid, realizes the front initial sealing of valve.Along with upstream pressure and valve body lumen pressure difference progressively increase, the second metal C type circle is further compressed with spheroid, pressure enters metal C type ring recess simultaneously, and the first metal C type circle presses to valve seat bracing ring under the effect of pressure reduction, forces valve seat bracing ring to promote the second metal C type circle and contacts with spheroid.In the time that upstream pressure reaches the built-up welding sealing surface making above valve seat bracing ring and contacts with spheroid, play a supporting role and make the second metal C type circle can not continue not to be subject to excessive compression in the situation that of rising at pressure again, having ensured that the second metal C type circle can not damage because of increased pressure.Built-up welding sealing surface has also played the effect of auxiliary seal, and the valve seat of this double hard sealing has ensured the sealability of metal hard-sealing ball valve.
When valve is during in complete shut-down position lumen entrance pressure, when before and after valve seat, pressure difference is lower, the spring of valve seat promotes valve seat integrated moving, and the second metal C type circle is contacted with spheroid, realizes the front initial sealing of valve.Along with upstream pressure and valve body lumen pressure difference progressively increase, the second metal C type circle is further compressed with spheroid, pressure enters metal C type ring recess simultaneously, and pressure directly promotes valve seat bracing ring and draws close to spheroid, forces valve seat bracing ring to promote the second metal C type circle and contacts with spheroid.In the time that upstream pressure arrives certain numerical value, built-up welding sealing surface above valve seat bracing ring contacts with spheroid, play a supporting role, and make the second metal C type circle can not continue to be subject to excessive compression in the situation that of rising at pressure again, ensured that the second metal C type circle can not damage because of increased pressure.Built-up welding sealing surface has also played the effect of auxiliary seal, and the valve seat of this double hard sealing has ensured the sealability of metal hard-sealing ball valve.
Further, described first, second dust ring is made by metallic material.
Further, described first, second dust ring is made by nonmetallic material.
Further, the hard seal valve seat of the two blocking-up of described double-piston, its metal C type circle can be also metal O type circle;
Further, the hard seal valve seat of the two blocking-up of described double-piston, can also comprise and also comprise fire proof seal circle and dustproof construction;
Further, the hard seal valve seat of the two blocking-up of described double-piston is double sealing structure, and one is heavily metal C type circle, and one is heavily weld-deposited cladding.
The beneficial effects of the hard seal valve seat of the two blocking-up of a kind of double-piston that is provided with metal C type circle sealing configuration described in the utility model are, good seal performance, simple in structure and Applicable temperature is extensive.Described hard seal valve seat can ensure that valve is at all kinds of acidity, neutrality or alkaline medium during at pressure 0～45Mpa, temperature-196～540 DEG C, valve seat can float flexibly in specific space, without jam, between valve seat and valve body, can reach effective sealing, all can meet requirement projected life of valve the working life of Sealing.The hard sealing seat collocation of double-piston and single piston valve is used and can also be able to realize DBB and DIB structure.
brief description of the drawings
Fig. 1 is the structural representation of a kind of hard seal valve seat of the two blocking-up of double-piston that is provided with metal C type circle sealing configuration described in the utility model;
Fig. 2 is the schematic diagram of described valve in the time of complete shut-down position upstream entrance pressure;
Fig. 3 is the schematic diagram of described valve in the time of the lumen entrance pressure of complete shut-down position.
Shown in figure: 1-the first dust ring, 2-valve seat bracing ring, 3-back-up ring, 4-the first metal C type circle, 5-the second dust ring, 6-spring, 7-the second metal C type circle, 8-hexagon socket head cap screw, 9-valve seat pressure ring, 10-spheroid, 11-weld-deposited cladding.
embodiment
For making the utility model embodiment's object, technological scheme and advantage clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.
Below in conjunction with Fig. 1 to 3 explanation the utility model embodiment.
The hard seal valve seat of the two blocking-up of double-piston, described valve seat comprises the first dust ring 1, valve seat bracing ring 2, back-up ring 3, the first metal C type circle 4, the second dust ring 5, spring 6, the second metal C type circle 7, hexagon socket head cap screw 8, valve seat pressure ring 9, spheroid 10, weld-deposited cladding 11.Described the first dust ring 1 and the second dust ring 5 are arranged on valve seat bracing ring 2, described back-up ring 3 is arranged between a pair of the first metal C type circle 4, described spring 6 is arranged at hexagon socket head cap screw 8 belows, described valve seat pressure ring 9 fits together with hexagon socket head cap screw 8, and the second metal C type circle 7 is arranged on spheroid 10 with weld-deposited cladding 11.
The working principle of the hard seal valve seat of the two blocking-up of described double-piston is:
As shown in Figure 2, when valve is during in complete shut-down position upstream entrance pressure, when before and after valve seat, pressure difference is lower, the spring 6 of valve seat promotes valve seat integrated moving, and the second metal C type circle 7 is contacted with spheroid 10, realizes the front initial sealing of valve.Along with upstream pressure and valve body lumen pressure difference progressively increase, the second metal C type circle 7 is further compressed with spheroid 10, pressure enters metal C type ring recess simultaneously, as shown in Figure 2 due to area A > area B, the first metal C type circle 4 presses to valve seat bracing ring 2 under the effect of pressure reduction, forces valve seat bracing ring 2 to promote the second metal C type circle 7 and contacts with spheroid 10.Reaching at upstream pressure the built-up welding sealing surface necessarily making above valve seat bracing ring 2 contacts with spheroid, play a supporting role, and make the second metal C type circle 7 can not continue to be subject to excessive compression in the situation that of rising at pressure again, ensure that the second metal C type circle 7 can be not damaged because of increased pressure.Built-up welding sealing surface has also played the effect of auxiliary seal, and the valve seat of this double hard sealing has ensured the sealability of metal hard-sealing ball valve.
As shown in Figure 3, when valve is during in complete shut-down position lumen entrance pressure, when before and after valve seat, pressure difference is lower, the spring 6 of valve seat promotes valve seat integrated moving, and the second metal C type circle 7 is contacted with spheroid 10, realizes the front initial sealing of valve.Along with upstream pressure and valve body lumen pressure difference progressively increase, the second metal C type circle 7 is further compressed with spheroid 10, pressure enters metal C type ring recess simultaneously, as shown in Figure 3, due to area A > area B, pressure directly promotes valve seat bracing ring 2 and draws close to spheroid 10, forces valve seat bracing ring 2 to promote the second metal C type circle 7 and contacts with spheroid 10.Reaching at upstream pressure the built-up welding sealing surface making above valve seat bracing ring 2 contacts with spheroid, play a supporting role, make the second metal C type circle 7 can be not again in the situation that pressure continues to raise excessive compression, ensured that the second metal C type circle 7 can be not damaged because of increased pressure.Built-up welding sealing surface has also played the effect of auxiliary seal, and the valve seat of this double hard sealing has ensured the sealability of metal hard-sealing ball valve.
Claims (2)
1. one kind is provided with the hard seal valve seat of the two blocking-up of double-piston of metal C type circle sealing configuration, it is characterized in that: its structure comprises the first dust ring, valve seat bracing ring, back-up ring, the first metal C type circle, the second dust ring, spring, the second metal C type circle, hexagon socket head cap screw, valve seat pressure ring, spheroid and weld-deposited cladding, described the first dust ring and the second dust ring are arranged on valve seat bracing ring, described back-up ring is arranged between a pair of the first metal C type circle, described spring is arranged at hexagon socket head cap screw below, described valve seat pressure ring and hexagon socket head cap screw fit together, the second metal C type circle and weld-deposited cladding are arranged on spheroid.
2. the hard seal valve seat of the two blocking-up of double-piston according to claim 1, is characterized in that: described valve seat also comprises fire proof seal circle and dustproof construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840155.7U CN203703226U (en) | 2013-12-18 | 2013-12-18 | Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840155.7U CN203703226U (en) | 2013-12-18 | 2013-12-18 | Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703226U true CN203703226U (en) | 2014-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320840155.7U Expired - Lifetime CN203703226U (en) | 2013-12-18 | 2013-12-18 | Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703226U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089044A (en) * | 2014-07-15 | 2014-10-08 | 合肥通用机械研究院 | LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling |
| CN105889551A (en) * | 2016-06-23 | 2016-08-24 | 西诺威阀门控制（苏州）有限公司 | Bidirectional sealing structure of ball valve |
| CN107250631A (en) * | 2014-12-31 | 2017-10-13 | 卡梅伦国际有限公司 | Double-piston effect lip packing base assembly |
| CN108050267A (en) * | 2017-12-15 | 2018-05-18 | 安徽铜都流体科技股份有限公司 | Six sealings, zero friction accumulation of energy dual-top type spiral valve |
| US11448321B2 (en) | 2018-08-03 | 2022-09-20 | Saint-Gobain Performance Plastics Corporation | Ball valve seal |
-
2013
- 2013-12-18 CN CN201320840155.7U patent/CN203703226U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089044A (en) * | 2014-07-15 | 2014-10-08 | 合肥通用机械研究院 | LNG ultra-low temperature top-mounting type ball valve seat capable of achieving pre-tightening force fine tuning and on-line disassembling |
| CN107250631A (en) * | 2014-12-31 | 2017-10-13 | 卡梅伦国际有限公司 | Double-piston effect lip packing base assembly |
| CN107250631B (en) * | 2014-12-31 | 2022-01-28 | 卡梅伦技术有限公司 | Double-piston effect lip seal base assembly |
| CN105889551A (en) * | 2016-06-23 | 2016-08-24 | 西诺威阀门控制（苏州）有限公司 | Bidirectional sealing structure of ball valve |
| CN108050267A (en) * | 2017-12-15 | 2018-05-18 | 安徽铜都流体科技股份有限公司 | Six sealings, zero friction accumulation of energy dual-top type spiral valve |
| CN108050267B (en) * | 2017-12-15 | 2023-09-26 | 安徽铜都流体科技股份有限公司 | Six-seal zero-friction energy-storage double-top type spin valve |
| US11448321B2 (en) | 2018-08-03 | 2022-09-20 | Saint-Gobain Performance Plastics Corporation | Ball valve seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee after: RAYMOND (BEIJING) TECHNOLOGY CO.,LTD. Address before: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: Raymond (Beijing) valve manufacturing Limited by Share Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee after: Raymond (Beijing) valve manufacturing Limited by Share Ltd. Address before: 101509 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: RAYMOND (BEIJING) VALVE MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20200630 Address after: 056000 Lintan Industrial Park, Jinnan New District, Handan City, Hebei Province (Lintan Town Fan Village) Patentee after: Hebei Raymond Valve Manufacturing Co.,Ltd. Address before: 101500 Beijing Miyun City Economic Development Zone C Yan Road No. 9-1 Patentee before: RAYMOND (BEIJING) TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |