CN103016763A - Dual-seal water inlet butterfly valve with valve body sealing ring provided with guide ring - Google Patents
Dual-seal water inlet butterfly valve with valve body sealing ring provided with guide ring Download PDFInfo
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- CN103016763A CN103016763A CN2012105888763A CN201210588876A CN103016763A CN 103016763 A CN103016763 A CN 103016763A CN 2012105888763 A CN2012105888763 A CN 2012105888763A CN 201210588876 A CN201210588876 A CN 201210588876A CN 103016763 A CN103016763 A CN 103016763A
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- annular piston
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Abstract
The invention provides a dual-seal water inlet butterfly valve with a valve body sealing ring provided with a guide ring. A working seal pair at the front part and an overhaul seal pair at the rear part are arranged between a valve body and a valve plate; the overhaul seal pair is provided with a valve body overall seal component embedded at the circumferential rear part in the valve body; the valve body overall seal component is provided with a ring-shaped hydraulic cylinder on the valve body and a valve body seal ring in the ring-shaped hydraulic cylinder; the valve body seal ring is provided with an annular piston, an annular piston rod and a seal ring, connected with one another; a circular groove with a rectangular section is formed in the outer circumference of the valve body seal ring; and a rubber guide ring with a rectangular interference section is arranged in the circular groove. The circular groove with the rectangular section is formed in the outer circumference of the annular piston rod, the rubber guide ring with the rectangular interference section is arranged in the circular groove, and when the valve body seal ring moves front and back, the rubber guide ring can improve the tightness, and fill the gap between the valve body seal ring and the ring-shaped hydraulic cylinder, so that the valve body seal ring can move smoothly front and back, and the phenomenon that the valve body seal ring is stuck in the front-and-back movement is avoided.
Description
Technical field
The present invention relates to a kind of double-sealing water inflow butterfly valve, particularly a kind of valve body maintenance black box of double density water inlet envelope butterfly maintenance sealing pair.
Background technique
Bigbore water inlet butterfly valve is arranged on the hydroelectric power intake tunnel, and the water inlet butterfly valve is used for controlling the break-make that supplies water to the hydroelectric power unit.Open the water inlet butterfly valve, supplying water to the hydroelectric power unit is used for generating, turn-offs the water inlet butterfly valve, stops to supply water to the hydroelectric power unit.The water inlet butterfly valve will overhaul the sealing pair of water inlet butterfly valve in use for some time, to the sealing pair of water inlet butterfly valve when overhauling, stop to supply water to the hydroelectric power unit, it is other to making maintenance operation that the maintainer enters the inherent water inlet of pipeline butterfly valve, the maintainer must not have water to enter pipeline when maintenance operation.Will be the maintenance valve closing of installing in the pipeline upstream during in the past to the secondary upkeep operation of water inlet butterfly valve seal, a valve will be installed in pipeline so more, in order to save the maintenance valve, in the prior art, a kind of hydroelectric power intake tunnel double-sealing water inflow butterfly valve is disclosed in the Chinese patent 2,006 2 0137380.4, this double-sealing water inflow butterfly valve has cylinder valve, the valve shaft that passes the valve body circumference is arranged on the valve body, on the valve shaft in the valve body valve plate is installed, there is fore working seal secondary and at the maintenance sealing pair at rear portion between valve body and valve plate, the working seal pair is comprised of with the valve body working seal ring that is set in valve body inner circumference front portion the valve plate working seal ring that is set on the anterior excircle of valve plate, the maintenance sealing pair is comprised of with the valve body maintenance black box that is set in valve body inner circumference rear portion the valve plate maintenance seal ring that is set on the excircle of valve plate rear portion, valve body maintenance black box has the annular hydraulic cylinder on valve body, before the annular hydraulic cylinder, there is ring-shaped cylinder cover the rear end, the annular piston that the Stainless Acid Resistant Steel material is arranged in annular hydraulic cylinder, before the annular piston, the rear end is connected with the annular piston bar of Stainless Acid Resistant Steel material, the front end of annular piston bar has the valve body maintenance seal ring that matches with valve plate maintenance seal ring, between annular piston and the annular hydraulic cylinder seal ring is arranged, before annular hydraulic cylinder has, rear hydraulic medium is imported and exported.Can the actuating valve health check-up repair black box with hydraulic medium, allow the annular piston that is connected with the annular piston bar along axial forward and backward the moving of valve body, make valve body maintenance seal ring and valve plate overhaul seal ring merging, separate.
The bore of this double-sealing water inflow butterfly valve is larger, the annular piston that is connected with the annular piston bar in the valve body maintenance black box be in the annular hydraulic cylinder on valve body before, rear motion, in use, before the annular piston that is connected with the annular piston bar on the valve body in the annular hydraulic cylinder, the displacement amount of rear motion is very little, the diameter of annular piston that is connected with the annular piston bar is larger, length is less, wall thickness is less, larger at the such diameter of processing, length is less, wall thickness is less when being connected with the annular piston of annular piston bar, size and morpheme have certain deviation, and this deviation causes the gap between the annular hydraulic cylinder on valve seal ring and the valve body that certain deviation is arranged; In addition, it generally is uniform 2 ~ 4 in a circumferential direction that hydraulic medium in the valve body maintenance black box is imported and exported, distance was larger between each hydraulic medium was imported and exported, and apart from the distance of hydraulic medium source pipeline difference was arranged, and caused hydraulic medium that the valve seal ring is had certain deviation in the Driving force of circumference.
Repairing the annular piston that is connected with the annular piston bar in the black box with the health check-up of hydraulic medium actuating valve in annular hydraulic cylinder during forward and backward motion, above-mentioned deviation causes valve seal ring motion to have some setbacks easily, also can cause the stuck consequence such as motionless of valve seal ring when serious.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency, propose the annular piston that is connected with the annular piston bar in a kind of black box in annular hydraulic cylinder forward and backward motion smoothly the valve seal ring have the double-sealing water inflow butterfly valve of guide ring.
The present invention is achieved using the following method.
The double-sealing water inflow butterfly valve that the valve seal ring has guide ring has cylinder valve, the valve shaft that passes the valve body circumference is arranged on the valve body, on the valve shaft in the valve body valve plate is installed, there is fore working seal secondary and at the maintenance sealing pair at rear portion between valve body and valve plate, the working seal pair is comprised of with the valve body working seal ring that is set in valve body inner circumference front portion the valve plate working seal ring that is set on the anterior excircle of valve plate, the maintenance sealing pair is comprised of with the valve body maintenance black box that is set in valve body inner circumference rear portion the valve plate maintenance seal ring that is set on the excircle of valve plate rear portion, valve body maintenance black box has the annular hydraulic cylinder on valve body, before the annular hydraulic cylinder, there is ring-shaped cylinder cover the rear end, the annular piston that the Stainless Acid Resistant Steel material is arranged in annular hydraulic cylinder, before the annular piston, the rear end is connected with the annular piston bar of Stainless Acid Resistant Steel material, the front end of annular piston bar has the valve body maintenance seal ring that matches with valve plate maintenance seal ring, between annular piston bar and the ring-shaped cylinder cover seal ring is arranged, before annular hydraulic cylinder has, rear hydraulic medium is imported and exported, it is the circular groove of rectangle that the excircle of rear annular piston bar has the cross section, it is the circular groove of rectangle that the inner circumference of front ring-shaped cylinder cover has the cross section, the cross section is that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring of rectangle between rear annular piston bar and the rear ring-shaped cylinder cover, and the cross section is that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring of rectangle between front ring-shaped cylinder cover and the front annular piston bar.
Behind the present invention between annular piston bar and the rear ring-shaped cylinder cover cross section be that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring of rectangle, the cross section is that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring of rectangle between front ring-shaped cylinder cover and the front annular piston bar, repair with the health check-up of hydraulic medium actuating valve be connected with in the black box before, the annular piston of rear annular piston bar in annular hydraulic cylinder before, during rear motion, the elasticity interference of rubber guide ring can improve the sealing of valve seal ring and annular hydraulic cylinder, also can fill between valve body seal ring and the annular hydraulic cylinder because that certain deviation arranged and gap that produce, before making the valve seal ring in annular hydraulic cylinder, rear motion is smooth and easy, avoids the valve seal ring front, motionless phenomenon is stuck in the rear motion.
Below in conjunction with accompanying drawing, the present invention is further described.
Description of drawings
Fig. 1 cuts open schematic representation according to the master office of looking that a kind of valve seal ring that invention scheme of the present invention proposes has a double-sealing water inflow butterfly valve of guide ring;
When Fig. 2 is the secondary unlatching of valve seal, the I place enlarged diagram of Fig. 1;
Fig. 3 is valve seal pair when closing, the I place enlarged diagram of Fig. 1;
Fig. 4 is the III place enlarged diagram of Fig. 3;
Fig. 5 is the II place enlarged diagram of Fig. 1.
Embodiment
Among Fig. 1 ~ Fig. 5, the double-sealing water inflow butterfly valve that the valve seal ring has guide ring has cylinder valve 1, the valve shaft 2 that passes the valve body circumference is arranged on the valve body, on the valve shaft in the valve body valve plate 3 is installed, fore working seal secondary 4 is arranged and at the maintenance sealing pair 5 at rear portion between valve body and valve plate, the working seal pair is comprised of with the valve body working seal ring 7 that is set in valve body inner circumference front portion the valve plate working seal ring 6 that is set on the anterior excircle of valve plate, the maintenance sealing pair is comprised of with the valve body maintenance black box 9 that is set in valve body inner circumference rear portion the valve plate maintenance seal ring 8 that is set on the excircle of valve plate rear portion, valve body maintenance black box has the annular hydraulic cylinder 10 on valve body, before the annular hydraulic cylinder, there is ring-shaped cylinder cover 11 rear end, 12, the annular piston 13 that the Stainless Acid Resistant Steel material is arranged in annular hydraulic cylinder, before the annular piston, the rear end is connected with the annular piston bar 14 of Stainless Acid Resistant Steel material, 15, the front end of annular piston bar has the valve body maintenance seal ring 16 that matches with valve plate maintenance seal ring, before annular hydraulic cylinder has, rear hydraulic medium imports and exports 17,18, it is the circular groove 19 of rectangle that the excircle of rear annular piston bar has the cross section, it is the circular groove 20 of rectangle that the inner circumference of front ring-shaped cylinder cover has the cross section, the cross section is that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring 21 of rectangle between rear annular piston bar and the rear ring-shaped cylinder cover, and the cross section is that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring 22 of rectangle between front ring-shaped cylinder cover and the front annular piston bar.
Claims (1)
1. double-sealing water inflow butterfly valve with guide ring of a valve seal ring has cylinder valve, the valve shaft that passes the valve body circumference is arranged on the valve body, on the valve shaft in the valve body valve plate is installed, there is fore working seal secondary and at the maintenance sealing pair at rear portion between valve body and valve plate, the working seal pair is comprised of with the valve body working seal ring that is set in valve body inner circumference front portion the valve plate working seal ring that is set on the anterior excircle of valve plate, the maintenance sealing pair is comprised of with the valve body maintenance black box that is set in valve body inner circumference rear portion the valve plate maintenance seal ring that is set on the excircle of valve plate rear portion, valve body maintenance black box has the annular hydraulic cylinder on valve body, before the annular hydraulic cylinder, there is ring-shaped cylinder cover the rear end, the annular piston that the Stainless Acid Resistant Steel material is arranged in annular hydraulic cylinder, before the annular piston, the rear end is connected with the annular piston bar of Stainless Acid Resistant Steel material, the front end of annular piston bar has the valve body maintenance seal ring that matches with valve plate maintenance seal ring, before annular hydraulic cylinder has, rear hydraulic medium is imported and exported, it is characterized in that: it is the circular groove of rectangle that the excircle of rear annular piston bar has the cross section, it is the circular groove of rectangle that the inner circumference of front ring-shaped cylinder cover has the cross section, the cross section is that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring of rectangle between rear annular piston bar and the rear ring-shaped cylinder cover, and the cross section is that to have size that the cross section of interference is slightly arranged in the circular groove of rectangle be the rubber guide ring of rectangle between front ring-shaped cylinder cover and the front annular piston bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105888763A CN103016763A (en) | 2012-12-29 | 2012-12-29 | Dual-seal water inlet butterfly valve with valve body sealing ring provided with guide ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105888763A CN103016763A (en) | 2012-12-29 | 2012-12-29 | Dual-seal water inlet butterfly valve with valve body sealing ring provided with guide ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103016763A true CN103016763A (en) | 2013-04-03 |
Family
ID=47965694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105888763A Pending CN103016763A (en) | 2012-12-29 | 2012-12-29 | Dual-seal water inlet butterfly valve with valve body sealing ring provided with guide ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016763A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB873136A (en) * | 1957-09-02 | 1961-07-19 | Dewrance & Co | Improvements in butterfly valves |
| EP0024036A1 (en) * | 1979-08-09 | 1981-02-18 | Linde Aktiengesellschaft | Device for assuring the effective sealing of a butterfly valve |
| CN2731201Y (en) * | 2004-06-08 | 2005-10-05 | 铁岭阀门(集团)特种阀门有限责任公司 | Zero friction sealed valve |
| CN200958613Y (en) * | 2006-09-26 | 2007-10-10 | 铁岭阀门(集团)特种阀门有限责任公司 | Double-sealed buttfly valve for hydraulic electric power generation inlet channel |
| CN200961742Y (en) * | 2006-09-26 | 2007-10-17 | 能发伟业铁岭阀门股份有限公司 | Sealing structure for examining and repairing valve |
| CN201083269Y (en) * | 2007-06-20 | 2008-07-09 | 湖北洪城通用机械股份有限公司 | Double-piston water turbine water-feeding hydraulic double-sealing butterfly valve |
| CN201426021Y (en) * | 2009-04-02 | 2010-03-17 | 北京清畅电力技术股份有限公司 | Seal component for hole-penetrating of transmission main shaft of gas-sealed switch cabinet |
| CN201827393U (en) * | 2010-09-20 | 2011-05-11 | 天工阀门集团有限公司 | Special double-seal hydraulic control butterfly valve for hydroelectricity |
| CN202140603U (en) * | 2011-07-21 | 2012-02-08 | 铁岭阀门（集团）制造有限公司 | Zero friction sealing valve |
| CN202629109U (en) * | 2012-06-07 | 2012-12-26 | 湖北高中压阀门有限责任公司 | Inlet butterfly valve with two hard metal sealing pairs |
-
2012
- 2012-12-29 CN CN2012105888763A patent/CN103016763A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB873136A (en) * | 1957-09-02 | 1961-07-19 | Dewrance & Co | Improvements in butterfly valves |
| EP0024036A1 (en) * | 1979-08-09 | 1981-02-18 | Linde Aktiengesellschaft | Device for assuring the effective sealing of a butterfly valve |
| CN2731201Y (en) * | 2004-06-08 | 2005-10-05 | 铁岭阀门(集团)特种阀门有限责任公司 | Zero friction sealed valve |
| CN200958613Y (en) * | 2006-09-26 | 2007-10-10 | 铁岭阀门(集团)特种阀门有限责任公司 | Double-sealed buttfly valve for hydraulic electric power generation inlet channel |
| CN200961742Y (en) * | 2006-09-26 | 2007-10-17 | 能发伟业铁岭阀门股份有限公司 | Sealing structure for examining and repairing valve |
| CN201083269Y (en) * | 2007-06-20 | 2008-07-09 | 湖北洪城通用机械股份有限公司 | Double-piston water turbine water-feeding hydraulic double-sealing butterfly valve |
| CN201426021Y (en) * | 2009-04-02 | 2010-03-17 | 北京清畅电力技术股份有限公司 | Seal component for hole-penetrating of transmission main shaft of gas-sealed switch cabinet |
| CN201827393U (en) * | 2010-09-20 | 2011-05-11 | 天工阀门集团有限公司 | Special double-seal hydraulic control butterfly valve for hydroelectricity |
| CN202140603U (en) * | 2011-07-21 | 2012-02-08 | 铁岭阀门（集团）制造有限公司 | Zero friction sealing valve |
| CN202629109U (en) * | 2012-06-07 | 2012-12-26 | 湖北高中压阀门有限责任公司 | Inlet butterfly valve with two hard metal sealing pairs |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |