CN105889551A - Bidirectional sealing structure of ball valve - Google Patents
Bidirectional sealing structure of ball valve Download PDFInfo
- Publication number
- CN105889551A CN105889551A CN201610458815.3A CN201610458815A CN105889551A CN 105889551 A CN105889551 A CN 105889551A CN 201610458815 A CN201610458815 A CN 201610458815A CN 105889551 A CN105889551 A CN 105889551A
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- CN
- China
- Prior art keywords
- mentioned
- lps
- packing ring
- annular groove
- valve seat
- Prior art date
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Abstract
The invention discloses a bidirectional sealing structure of a ball valve. The bidirectional sealing structure comprises a valve body, a ball body, a valve seat, a valve seat supporting ring, a first LPS sealing filler ring, a second LPS sealing filler ring, a third LPS sealing filler ring and a fourth LPS sealing filler ring, the valve seat supporting ring is in sliding fit with the valve body, the valve seat is sleeved with the valve seat supporting ring, the valve seat supporting ring is in sliding fit with the valve seat, and the valve seat supporting ring comprises a first sliding column face, wherein the first sliding column face and the valve body slide relative to each other; the valve seat supporting ring comprises a second sliding column face, wherein the second sliding column face and the valve seat slide relative to each other, the first sliding column face is provided with a first annular groove, and the first LPS sealing filler ring is placed in the first annular groove. The bidirectional sealing structure has the advantages that the structure is resistant to aging and does not permanently deformed; sealing performance is remarkably improved, and the service life is remarkably prolonged.
Description
Technical field
The present invention relates to ball valve technical field, be specifically related to the Bidirectional seal structure of a kind of ball valve.
Background technology
Existing two way seal valve is under the working condition such as High Temperature High Pressure highly corrosive, and sealing property can significantly reduce, and service life can be greatly shortened.
Summary of the invention
It is an object of the invention to provide the Bidirectional seal structure of a kind of ball valve, it has preferable sealing property, and service life is long.
For achieving the above object, the present invention provides following technical scheme:
nullA kind of Bidirectional seal structure of ball valve，Including valve body、Spheroid、Valve seat、Valve seat bracing ring、Oneth LPS sealing drilled packing ring (polysilane sealing drilled packing ring)、2nd LPS sealing drilled packing ring、3rd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring，Above-mentioned spheroid is located in valve body，Above-mentioned valve seat bracing ring is assemblied in valve body，Above-mentioned valve seat bracing ring coordinates with above-mentioned valve body slides，Above-mentioned valve seat bracing ring is sheathed on the outside of above-mentioned valve seat，Above-mentioned valve seat bracing ring is slidably matched with above-mentioned valve seat，Above-mentioned valve seat bracing ring includes the first slip cylinder that slide relative with above-mentioned valve body，Above-mentioned valve seat bracing ring includes the second slip cylinder that slide relative with above-mentioned valve seat，Above-mentioned first slip cylinder is provided with first annular groove and the second annular groove，Above-mentioned second slip cylinder is provided with the 3rd annular groove and fourth annular groove，An above-mentioned LPS sealing drilled packing ring is placed in above-mentioned first annular groove，Above-mentioned 2nd LPS sealing drilled packing ring is placed in above-mentioned second annular groove，Above-mentioned 3rd LPS sealing drilled packing ring is placed in above-mentioned 3rd annular groove，Above-mentioned 4th LPS sealing drilled packing ring is placed in above-mentioned fourth annular groove.
Preferably, above-mentioned first slip cylinder is provided with the 5th annular groove, above-mentioned 5th annular groove is between above-mentioned first annular groove and above-mentioned second annular groove, above-mentioned 5th annular groove lays the first O, above-mentioned second slip cylinder is provided with the 6th annular groove, above-mentioned 6th annular groove is between above-mentioned 3rd annular groove and fourth annular groove, and above-mentioned 6th annular groove lays the second O.
Preferably, an above-mentioned LPS sealing drilled packing ring, the 2nd LPS sealing drilled packing ring, the 3rd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring take the shape of the letter U shape, an above-mentioned LPS sealing drilled packing ring and the 2nd back-to-back setting of LPS sealing drilled packing ring, above-mentioned 3rd LPS sealing drilled packing ring and the 4th back-to-back setting of LPS sealing drilled packing ring.
Preferably, an above-mentioned LPS sealing drilled packing ring, the 2nd LPS sealing drilled packing ring, the 3rd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring include spring, sealed jacket and LPS airtight and watertight padding respectively, above-mentioned spring is used for giving sealed jacket pretightning force, and LPS airtight and watertight padding is placed in sealed jacket.
The operation principle of the present invention is:
When valve end carrys out pressure medium P, as shown in Figure 1.Pressure medium P acts on the 2nd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring, now the 2nd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring work, make to seal between valve seat and valve body, form pressure differential P1, this pressure differential P1 forces valve seat insert to the close extruding of spheroid, makes to form effective sealing between valve seat insert and spheroid.
When valve lumen carrys out pressure medium P, as shown in Figure 2.Pressure medium P acts on the 2nd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring, now the 2nd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring work, make to seal between valve seat and valve body, form pressure differential P2, this pressure differential P2 forces valve seat insert to the close extruding of spheroid, makes to form effective sealing between valve seat insert and spheroid.
Bidirectional seal structure can cut off the pressure on both sides before and after valve seat.Can effectively cut off the pressure medium from valve seat two ends.Operationally, if upstream valve seat is revealed, pressure medium enters valve body lumen, and downstream valve seat still can effectively cut off medium, prevents medium from entering downstream line or ensureing the safety of downstream line operation.
The invention have the benefit that LPS sealing drilled packing ring has extensive resistance to chemical corrosion, the spring energy-storage sealing ring of heat resisting and pressure resisting effectively can use under the conditions of bad working environments: meets the harshest fugacity and reveals requirement；Coefficient of friction is low, effectively reduces abrasion, self-lubricating, and moment of torsion is little；The operating temperature of-268 DEG C to+316 DEG C；The high pressure of below 350Mpa can be born；Aging resistance, does not occur permanent elasticity to deform；Increase substantially sealability and service life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram when valve end carrys out pressure medium；
Fig. 2 is the schematic diagram when valve lumen carrys out pressure medium.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is further described.Following example are only used for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
The technical scheme that the present invention is embodied as is:
nullAs depicted in figs. 1 and 2，A kind of Bidirectional seal structure of ball valve，Including valve body 3、Spheroid 1、Valve seat 7、Valve seat bracing ring 4、Oneth LPS sealing drilled packing ring 51、2nd LPS sealing drilled packing ring 52、3rd LPS sealing drilled packing ring 53 and the 4th LPS sealing drilled packing ring 54，Above-mentioned spheroid 1 is located in valve body 3，Above-mentioned valve seat bracing ring 4 is assemblied in valve body 3，Above-mentioned valve seat bracing ring 4 is slidably matched with above-mentioned valve body 3，Above-mentioned valve seat bracing ring 4 is sheathed on the outside of above-mentioned valve seat 7，Above-mentioned valve seat bracing ring 4 is slidably matched with above-mentioned valve seat 7，Above-mentioned valve seat bracing ring 4 includes the first slip cylinder that slide relative with above-mentioned valve body 3，Above-mentioned valve seat bracing ring 4 includes the second slip cylinder that slide relative with above-mentioned valve seat 7，Above-mentioned first slip cylinder is provided with first annular groove and the second annular groove，Above-mentioned second slip cylinder is provided with the 3rd annular groove and fourth annular groove，An above-mentioned LPS sealing drilled packing ring 51 is placed in above-mentioned first annular groove，Above-mentioned 2nd LPS sealing drilled packing ring 52 is placed in above-mentioned second annular groove，Above-mentioned 3rd LPS sealing drilled packing ring 53 is placed in above-mentioned 3rd annular groove，Above-mentioned 4th LPS sealing drilled packing ring 54 is placed in above-mentioned fourth annular groove.
Above-mentioned first slip cylinder is provided with the 5th annular groove, above-mentioned 5th annular groove is between above-mentioned first annular groove and above-mentioned second annular groove, above-mentioned 5th annular groove lays the first O 61, above-mentioned second slip cylinder is provided with the 6th annular groove, above-mentioned 6th annular groove is between above-mentioned 3rd annular groove and fourth annular groove, and above-mentioned 6th annular groove lays the second O 62.
Above-mentioned LPS sealing drilled packing ring the 51, the 2nd LPS sealing drilled packing ring the 52, a 3rd LPS sealing drilled packing ring 53 and the 4th LPS sealing drilled packing ring 54 take the shape of the letter U shape, above-mentioned LPS sealing drilled packing ring 51 and the 2nd back-to-back setting of LPS sealing drilled packing ring 52, above-mentioned 3rd LPS sealing drilled packing ring 53 and the 4th back-to-back setting of LPS sealing drilled packing ring 54.
Above-mentioned LPS sealing drilled packing ring the 51, the 2nd LPS sealing drilled packing ring the 52, a 3rd LPS sealing drilled packing ring 53 and the 4th LPS sealing drilled packing ring 54 include spring, sealed jacket and LPS airtight and watertight padding respectively, above-mentioned spring is used for giving sealed jacket pretightning force, and LPS airtight and watertight padding is placed in sealed jacket.
The operation principle of the present invention is:
When valve end carrys out pressure medium P, as shown in Figure 1.Pressure medium P acts on the 2nd LPS sealing drilled packing ring 52 and the 4th LPS sealing drilled packing ring 54, now the 2nd LPS sealing drilled packing ring 52 and the 4th LPS sealing drilled packing ring 54 work, make to seal between valve seat 7 and valve body 3, form pressure differential P1, this pressure differential P1 forces valve seat 7 sealing ring 2 to spheroid 1 near extruding, makes to form effective sealing between valve seat 7 sealing ring 2 and spheroid 1.
When valve lumen carrys out pressure medium P, as shown in Figure 2.Pressure medium P acts on the 2nd LPS sealing drilled packing ring 52 and the 4th LPS sealing drilled packing ring 54, now the 2nd LPS sealing drilled packing ring 52 and the 4th LPS sealing drilled packing ring 54 work, make to seal between valve seat 7 and valve body 3, form pressure differential P2, this pressure differential P2 forces valve seat 7 sealing ring 2 to spheroid 1 near extruding, makes to form effective sealing between valve seat 7 sealing ring 2 and spheroid 1.
Bidirectional seal structure can cut off the pressure on both sides before and after valve seat 7.Can effectively cut off the pressure medium from valve seat 7 two ends.Operationally, if upstream valve seat 7 is revealed, pressure medium enters valve body 3 lumen, and downstream valve seat 7 still can effectively cut off medium, prevents medium from entering downstream line or ensureing the safety of downstream line operation.
The invention have the benefit that LPS sealing drilled packing ring has extensive resistance to chemical corrosion, the spring energy-storage sealing ring of heat resisting and pressure resisting effectively can use under the conditions of bad working environments: meets the harshest fugacity and reveals requirement；Coefficient of friction is low, effectively reduces abrasion, self-lubricating, and moment of torsion is little；The operating temperature of-268 DEG C to+316 DEG C；The high pressure of below 350Mpa can be born；Aging resistance, does not occur permanent elasticity to deform；Increase substantially sealability and service life.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, on the premise of without departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (4)
- null1. the Bidirectional seal structure of a ball valve，It is characterized in that，Including valve body、Spheroid、Valve seat、Valve seat bracing ring、Oneth LPS sealing drilled packing ring、2nd LPS sealing drilled packing ring、3rd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring，Above-mentioned spheroid is located in valve body，Above-mentioned valve seat bracing ring is assemblied in valve body，Above-mentioned valve seat bracing ring coordinates with above-mentioned valve body slides，Above-mentioned valve seat bracing ring is sheathed on the outside of above-mentioned valve seat，Above-mentioned valve seat bracing ring is slidably matched with above-mentioned valve seat，Above-mentioned valve seat bracing ring includes the first slip cylinder that slide relative with above-mentioned valve body，Above-mentioned valve seat bracing ring includes the second slip cylinder that slide relative with above-mentioned valve seat，Above-mentioned first slip cylinder is provided with first annular groove and the second annular groove，Above-mentioned second slip cylinder is provided with the 3rd annular groove and fourth annular groove，An above-mentioned LPS sealing drilled packing ring is placed in above-mentioned first annular groove，Above-mentioned 2nd LPS sealing drilled packing ring is placed in above-mentioned second annular groove，Above-mentioned 3rd LPS sealing drilled packing ring is placed in above-mentioned 3rd annular groove，Above-mentioned 4th LPS sealing drilled packing ring is placed in above-mentioned fourth annular groove.
- The Bidirectional seal structure of ball valve the most according to claim 1, it is characterized in that, above-mentioned first slip cylinder is provided with the 5th annular groove, above-mentioned 5th annular groove is between above-mentioned first annular groove and above-mentioned second annular groove, above-mentioned 5th annular groove lays the first O, above-mentioned second slip cylinder is provided with the 6th annular groove, and above-mentioned 6th annular groove is between above-mentioned 3rd annular groove and fourth annular groove, and above-mentioned 6th annular groove lays the second O.
- The Bidirectional seal structure of ball valve the most according to claim 2, it is characterized in that, an above-mentioned LPS sealing drilled packing ring, the 2nd LPS sealing drilled packing ring, the 3rd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring take the shape of the letter U shape, an above-mentioned LPS sealing drilled packing ring and the 2nd back-to-back setting of LPS sealing drilled packing ring, above-mentioned 3rd LPS sealing drilled packing ring and the 4th back-to-back setting of LPS sealing drilled packing ring.
- The Bidirectional seal structure of ball valve the most according to claim 3, it is characterized in that, an above-mentioned LPS sealing drilled packing ring, the 2nd LPS sealing drilled packing ring, the 3rd LPS sealing drilled packing ring and the 4th LPS sealing drilled packing ring include spring, sealed jacket and LPS airtight and watertight padding respectively, above-mentioned spring is used for giving sealed jacket pretightning force, and LPS airtight and watertight padding is placed in sealed jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458815.3A CN105889551A (en) | 2016-06-23 | 2016-06-23 | Bidirectional sealing structure of ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458815.3A CN105889551A (en) | 2016-06-23 | 2016-06-23 | Bidirectional sealing structure of ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889551A true CN105889551A (en) | 2016-08-24 |
Family
ID=56718866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610458815.3A Pending CN105889551A (en) | 2016-06-23 | 2016-06-23 | Bidirectional sealing structure of ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889551A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096865A (en) * | 2020-09-08 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Double-linkage back-to-back assembled elastic sealing structure for aero-engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262688A (en) * | 1979-05-25 | 1981-04-21 | Acf Industries, Incorporated | Metal seat assemblies for valves |
| CN203067823U (en) * | 2012-12-31 | 2013-07-17 | 雷蒙德（北京）阀门制造有限公司 | Lip seal double-piston double-blocking-up double-isolating type valve seat |
| CN203627879U (en) * | 2013-12-18 | 2014-06-04 | 雷蒙德（北京）阀门制造有限公司 | High-performance double-blocking double-isolation double-valve-base ball valve |
| CN203703226U (en) * | 2013-12-18 | 2014-07-09 | 雷蒙德（北京）阀门制造有限公司 | Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure |
| CN204553906U (en) * | 2015-04-12 | 2015-08-12 | 西诺威阀门控制（苏州）有限公司 | The Bidirectional seal structure of ball valve |
| CN204647403U (en) * | 2015-04-13 | 2015-09-16 | 成都成高阀门有限公司 | A kind of composite valve seat sealing configuration |
| CN205190886U (en) * | 2015-11-30 | 2016-04-27 | 三明高中压阀门有限公司 | Novel ball valve |
-
2016
- 2016-06-23 CN CN201610458815.3A patent/CN105889551A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262688A (en) * | 1979-05-25 | 1981-04-21 | Acf Industries, Incorporated | Metal seat assemblies for valves |
| CN203067823U (en) * | 2012-12-31 | 2013-07-17 | 雷蒙德（北京）阀门制造有限公司 | Lip seal double-piston double-blocking-up double-isolating type valve seat |
| CN203627879U (en) * | 2013-12-18 | 2014-06-04 | 雷蒙德（北京）阀门制造有限公司 | High-performance double-blocking double-isolation double-valve-base ball valve |
| CN203703226U (en) * | 2013-12-18 | 2014-07-09 | 雷蒙德（北京）阀门制造有限公司 | Double-piston double-blocking hard sealing valve seat with metal C-shaped ring sealing structure |
| CN204553906U (en) * | 2015-04-12 | 2015-08-12 | 西诺威阀门控制（苏州）有限公司 | The Bidirectional seal structure of ball valve |
| CN204647403U (en) * | 2015-04-13 | 2015-09-16 | 成都成高阀门有限公司 | A kind of composite valve seat sealing configuration |
| CN205190886U (en) * | 2015-11-30 | 2016-04-27 | 三明高中压阀门有限公司 | Novel ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096865A (en) * | 2020-09-08 | 2020-12-18 | 中国航发沈阳黎明航空发动机有限责任公司 | Double-linkage back-to-back assembled elastic sealing structure for aero-engine |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160824 |