CN2578623Y - Metal floating sealed sluice valves - Google Patents
Metal floating sealed sluice valves Download PDFInfo
- Publication number
- CN2578623Y CN2578623Y CN 02284847 CN02284847U CN2578623Y CN 2578623 Y CN2578623 Y CN 2578623Y CN 02284847 CN02284847 CN 02284847 CN 02284847 U CN02284847 U CN 02284847U CN 2578623 Y CN2578623 Y CN 2578623Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sluice
- metal
- flashboard
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Sliding Valves (AREA)
Abstract
The utility model relates to a sluice valve of a well mouth device used for petroleum production and natural gas production in the process of petroleum and natural exploitation. The utility model is a floating metal sealed sluice valve. Two sides of a sluice plate (6) of the sluice valve are provided with valve seats (7), contact surfaces between the sluice plate (6) and the valve seats (7) are smooth metal surfaces, and metal contacts with metal in order to seal petroleum and natural gas. The connection between the sluice plate (6) and a valve rod (5) is not fixed, an action space is provided for the sluice plate (6) via a thread fit clearance, and thus the sluice plate (6) is in a floating state during operation. The valve seats (7) and a valve body (1) are sealed by a sealed packing of a U-shaped spring, and the elasticity of the sealed packing of the U-shaped spring is used for causing the valve seats (7) to float in the valve body (1). Therefore, the small opening torque of the sluice valve and the untight seal of the sluice valve in opening and closing process due to a worn metal sealing surface can be avoided.
Description
The utility model relates to the gate valve of oil recovery, gas wellhead equipment in oil, the gas exploitation course, is a kind of floating type metallic seal gate valve.
At present, in oil, gas exploitation course, no matter the gate valve of oil recovery, gas wellhead equipment is to adopt rising stem (RS.) or dark bar structure, and valve rod is fixedly connected with being connected of flashboard; Valve seat is fixed on the valve body.Sealing material sealings such as nitrile butadiene rubber are adopted in sealing between valve seat and the flashboard.Because valve seat and flashboard are all fixed, gate valve easily causes the sealing material wearing and tearing in unlatching, pass closed procedure, cause poorly sealed.
The purpose of this utility model provides a kind of novel floating type metallic seal gate valve, to avoid the above-mentioned shortcoming of present oil recovery, gas production wellhead gate valve.
The gate valve of this oil recovery, gas wellhead equipment is made up of valve body (1), valve gap (2), bonnet (3), bonnet sealing, handwheel (4), valve rod (5), flashboard (6), valve seat (7) and guide plate (8).A valve seat (7) is respectively installed in flashboard (6) both sides at gate valve, and flashboard (6) is smooth metal covering with the surface of contact of valve seat (7), is the metal to metal contact, plays sealing oil, rock gas.
Valve seat (7) is installed in the valve body (1), adopts the spring sealed packing_seal of U type between valve seat (7) and the valve body (1), and utilizes the elasticity of the spring sealed packing of U type that valve seat (7) is floated in valve body (1).Not being connected between flashboard (6) and the valve rod (5) to fix, utilize Screw Thread Fit Clearance to come, guarantee that flashboard (6) is in quick condition during operation for flashboard (6) provides activity space.Floating type flashboard (6) cooperates with floating type valve seat (7), can prevent that gate valve from opening, closing wear metal sealing surface in the closed procedure, reaching the purpose that seals oil, rock gas fluid.
Fig. 1 is the general structure schematic representation of floating type metallic seal gate valve;
Fig. 2 is the schematic representation that one chip valve seat (7) cooperates with flashboard (6);
Fig. 3 is the schematic representation that two-piece type valve seat (7) cooperates with flashboard (6);
Fig. 4 is the schematic representation that twin-stage seal valve seat (7) cooperates with flashboard (6).
The utility model is described in further detail below in conjunction with Figure of description.
Floating type metallic seal gate valve is a kind of all-pass footpath, metal to metal seal gate valve, and flashboard (6) is smooth metal covering with the surface of contact of valve seat (7), metal to metal contact seal; Adopt the spring sealed packing_seal of U type between valve seat (7) and the valve body (1), and utilize the elasticity of the spring sealed packing of U type that valve seat (7) is floated in valve body (1).
Adopt between the valve rod of floating type metallic seal gate valve (5) and the flashboard (6) to be threaded, handwheel (4) drives valve rod (5) and rotate together, and the screw thread of valve rod (5) moves up and down flashboard (6), the opening and closing of realization gate valve.Valve rod (5) is supported by the spring sealed packing of the U type of bonnet sealing and sealing is provided, and makes the high-pressure liquid of valve body (1) lumen can be from the gate valve internal leakage; Valve rod (5) has the back seal function, can realize the sealing of replace with pressure bonnet.The bonnet sealing is installed in the bonnet (3) and the passage of annotating seal gease is provided.Valve gap (2) plays a part to connect valve body (1) and bonnet (3), adopts the steel ring sealing between valve body (1) and the bonnet (3).
When floating type metallic seal gate valve is closed, guide plate (8) guiding flashboard (6) enters sealing station, the fluid medium pressure of valve body (1) lumen raises, after its pressure surpasses the interior hydrodynamic pressure of gate valve runner, the high-pressure spray cognition of valve body (1) lumen enters the gate valve runner from the gap of flashboard (6) and valve seat (7), until reaching pressure balance.The high-pressure liquid of gate valve entrance point is pushed flashboard (6) on the valve seat (7) of gate valve outlet end, because the smooth metal of flashboard (6) and valve seat (7) is to the seal action of Metal Contact face and the last spring sealed packing of U type of valve seat (7), flowing medium can not flow to the gate valve outlet end from the gap between flashboard (6) and valve seat (7), valve seat (7) and the valve body (1); The flashboard of gate valve entrance point (6) is gone up the spring sealed packing of U type with the smooth metal of valve seat (7) to Metal Contact face, valve seat (7) and is also stoped flowing medium to enter valve body (1) lumen.
When floating type metallic seal gate valve was opened, the fluid of valve body (1) lumen can be replenished, and the high-pressure spray in the gate valve runner is known from experience the lumen that enters valve body (1) from the flashboard (6) and the gap of valve seat (7), until reaching pressure balance.
Because the flowing medium when floating type metallic seal gate valve is closed in the runner is pushed flashboard (6) on the valve seat (7) of gate valve outlet end, the valve seat of gate valve entrance point (7) is bigger with the gap of flashboard (6), in this case, it is very little to utilize handwheel (4) to open the moment of flashboard (6), and flashboard (6) is at complete opening or close Shi Buhui fully and be lockable and akinesia.
No matter valve seat (7) is monolithic or two chip architectures, and it cooperates with flashboard (6) is the same.
The twin-stage seal valve seat refers to that valve seat (7) forms by inside and outside two, in the outer plate of valve seat (7), there is an intercommunicating pore to link to each other with the lumen of valve body (1), this intercommunicating pore plays a part to transmit pressure, and the pressure of valve body (1) lumen can be acted on the interior sheet valve seat of valve seat (7).Behind the outer plate prooving of valve seat, high-pressure liquid in the runner enters the lumen of valve body (1) from the valve seat (7) and the gap of flashboard (6), the pressure of valve body (1) lumen enters from the outer plate intercommunicating pore of valve seat (7), the interior sheet of valve seat (7) is released, be close on the flashboard (6), play the effect that replenishes sealing, finish the twin-stage sealing function.
Floating type metallic seal gate valve can only complete opening or is closed fully, can not be used for throttling, and throttling should be used throttle valve or oil nozzle.
Claims (2)
1, a kind of gate valve that is used for oil, gas exploitation course oil recovery, gas wellhead equipment is a kind of floating type metallic seal gate valve, it is characterized in that metal to metal seal is adopted in the sealing between flashboard (6) and the valve seat (7).
2, floating type metallic seal gate valve according to claim 1 is characterized in that flashboard (6) and valve seat (7) float, and is opening, is closing wearing and tearing sealing in the closed procedure to prevent gate valve, and making the unlatching moment of gate valve little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02284847 CN2578623Y (en) | 2002-10-25 | 2002-10-25 | Metal floating sealed sluice valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02284847 CN2578623Y (en) | 2002-10-25 | 2002-10-25 | Metal floating sealed sluice valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578623Y true CN2578623Y (en) | 2003-10-08 |
Family
ID=33746046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02284847 Expired - Lifetime CN2578623Y (en) | 2002-10-25 | 2002-10-25 | Metal floating sealed sluice valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578623Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989855A (en) * | 2015-06-18 | 2015-10-21 | 宝鸡石油机械有限责任公司 | Safety valve with wave spring structure for valve seat |
-
2002
- 2002-10-25 CN CN 02284847 patent/CN2578623Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989855A (en) * | 2015-06-18 | 2015-10-21 | 宝鸡石油机械有限责任公司 | Safety valve with wave spring structure for valve seat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201297397Y (en) | Water pressure driving valve | |
| CN110671502B (en) | Water hammer resistant stop valve | |
| CN206816887U (en) | A kind of HTHP difference tandem balanced type regulating valve | |
| CN202659990U (en) | Adjustable swing check valve | |
| CN208871042U (en) | A kind of needle-like shut-off valve | |
| CN2578623Y (en) | Metal floating sealed sluice valves | |
| CN206668991U (en) | A kind of soft seat butterfly valve of novel sealing structure | |
| CN212671653U (en) | Wellhead assembly suitable for plunger gas lift drainage gas production | |
| CN111594087A (en) | Wellhead device suitable for plunger gas lift drainage gas production and operation method thereof | |
| CN202209430U (en) | Hydraulic control switch valve | |
| CN2608781Y (en) | Valve | |
| CN212377342U (en) | Multipurpose fluorine-lined ball valve | |
| CN210949952U (en) | Ultra-high pressure guide plate flat gate valve | |
| CN200946673Y (en) | Double-eccentric bi-directional metal seal butterfly valve | |
| CN104989836B (en) | Underwater sand control flat gate valve | |
| CN203488723U (en) | Fluid stop valve | |
| CN102313025B (en) | Hydraulic control switch valve | |
| CN201159310Y (en) | Check valve | |
| CN2333847Y (en) | Wedge-shaped sluice valve | |
| CN218935470U (en) | Tandem double-packing dynamic seal ultrahigh-pressure plate valve | |
| CN209130201U (en) | Lift counterbalance valve | |
| CN2240651Y (en) | Ceramic sealing valve | |
| CN212429821U (en) | Top-mounted type hemisphere valve special for sludge | |
| CN208804249U (en) | A kind of shut-off valve of sealing structure | |
| CN212643576U (en) | Flange type butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM CO., LTD. Free format text: FORMER OWNER: RAO WENYI Effective date: 20040910 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040910 Address after: 100011 Beijing city Dongcheng District No. 16 Andrew intercontinental building Patentee after: China Petroleum & Natural Gas Co., Ltd. Address before: Box 123 Tazhi Research Institute of Korla city the Xinjiang Uygur Autonomous Region 841000 oil Patentee before: Rao Wenyi |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121025 Granted publication date: 20031008 |