CN2343335Y - Sleeve air-release valve - Google Patents
Sleeve air-release valve Download PDFInfo
- Publication number
- CN2343335Y CN2343335Y CN 97229923 CN97229923U CN2343335Y CN 2343335 Y CN2343335 Y CN 2343335Y CN 97229923 CN97229923 CN 97229923 CN 97229923 U CN97229923 U CN 97229923U CN 2343335 Y CN2343335 Y CN 2343335Y
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- CN
- China
- Prior art keywords
- valve
- sleeve
- utility
- model
- valve body
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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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Abstract
The utility model relates to an air-release valve used for oil production wells in oil fields. The utility model has the purpose of providing a sleeve pressure air-release valve which can be directly installed on an oil pipe sleeve on the outlet of the sleeve without an additionally specialized pipeline. The utility model is mainly composed of a valve body, a packing box, a valve rod, a valve ball and a spring. The utility model is characterized in that the outer surface of one end of the valve body is provided with screw threads which can be directly connected with the oil nozzle sleeve of the outlet of the sleeve on a well mouth.
Description
The utility model relates to the oil well vent valve.
Domestic utility model patent (patent No. 93227200.2) discloses a kind of sleeve pipe constant pressure valve.Evenly interior gas and the recovery of relief sleeve of this constant pressure valve, but because the input port and the delivery outlet of this constant pressure valve are flange form, during this valve of Installation and Debugging, must ward off special pipeline from this valve to flow line in addition, and, use the flange bolton again with the steel ring sealing, its construction is quite complicated.Because the flange-type structure of this valve certainly will cause this valve body long-pending big, weight is big in addition.Because the sealing ring and the packing box of sealed valve body are flat, make that the sealing effectiveness of valve body is poor again, seal easily damages.
The purpose of this utility model is to provide a kind of need not ward off the casing pressure vent valve that oil pipe that special pipeline is directly installed on the sleeve pipe outlet puts in addition.
The utility model mainly is made up of valve body, packing box, valve rod, valve ball, spring etc., it is characterized in that valve body one end external surface has screw thread, can directly be connected with the oil nozzle cover of well head sleeve pipe outlet.
The packing box one end external surface that is used to seal is tubular threaded.
Compared with prior art, screwed connection mode of the present utility model makes that installation is simple and convenient, and machine is easy, also makes volume little, in light weight, corresponding reduction manufacturing cost.Tubular threaded sealing makes the sealing of sleeve pipe vent valve reliable, and seal is difficult for infringement, reduces the work operations amount.
Fig. 1 is a sleeve pipe vent valve structural representation.
Below in conjunction with accompanying drawing the utility model is elaborated.
Among Fig. 1, valve body 4 external surfaces have a step, valve body 4 external surfaces of step one end have screw thread can be directly with the oil nozzle cover of well head sleeve pipe outlet to be threaded, connect crown cap threadably in this end inner chamber, passage in the middle of the cap of top is as the air-flow inlet channel, in the valve body 4 of step position valve ball 3 is housed, valve ball 3 one side seats are on valve seat 2, opposite side is pressing closer spring 5, the valve body 4 of the step other end has the aperture of some as the air-flow bleed passage, external surface can be processed into the shape of installing for various shaping spanners, be connected with valve rod 6 threadably in this end inner chamber, carefully also form a step after thick before valve rod 6 parts outside valve body 4, when preventing that casing pressure from increasing suddenly with valve rod 6 ejections, and minimizing weight, on the valve rod 6 of thin end packing box 7 is housed, pipe thread seal outside the packing box 7 is on flow line, filler 8 in the packing box 7, pressure ring 9 and pressure cap 10 are used for the sealing of packing box 7 and valve rod 6, the outside pressure cap 10 of regulating, make it to head on pressure ring 9 axial compression fillers 8, make its expanded radially, guarantee the reliability of sealing, the other end of valve rod 6 is equipped with the handwheel 11 of regulating spring pressure.During work, gas in the sleeve pipe is entered by the inlet channel in the top cap 1, when casing pressure during greater than spring pressure and flow line place pressure sum, gas promotes valve ball 3 and heads on spring 5 and advance to the valve body other end along valve channel, and gas just enters flow line along the aperture on the valve body; When casing pressure during less than spring pressure and flow line place pressure sum, valve ball 3 keeps home positions constant.Sealed packing box 7 has guaranteed that sleeve pipe gas can not leak in the air.
Claims (2)
1, a kind of sleeve pipe vent valve is made up of valve body (4), packing box (7), valve rod (6), valve ball (3), spring (5) etc., it is characterized in that valve body (4) one end external surfaces have screw thread, can directly be connected with the oil nozzle cover of well head sleeve pipe outlet.
2, right 1 described sleeve pipe vent valve as requested is characterized in that packing box (7) the one end external surfaces that are used to seal are tubular threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97229923 CN2343335Y (en) | 1997-10-20 | 1997-10-20 | Sleeve air-release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97229923 CN2343335Y (en) | 1997-10-20 | 1997-10-20 | Sleeve air-release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2343335Y true CN2343335Y (en) | 1999-10-13 |
Family
ID=33942570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97229923 Expired - Fee Related CN2343335Y (en) | 1997-10-20 | 1997-10-20 | Sleeve air-release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2343335Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277068A (en) * | 2013-05-21 | 2013-09-04 | 新疆力信油田工程技术有限公司 | Oil well casing pipe exhaust valve |
| CN104141558A (en) * | 2014-07-15 | 2014-11-12 | 潍柴动力股份有限公司 | Exhaust gas recirculation cooling system |
| CN110836278A (en) * | 2018-08-17 | 2020-02-25 | 中国石油化工股份有限公司 | Constant pressure valve device for oil and gas field well mouth |
-
1997
- 1997-10-20 CN CN 97229923 patent/CN2343335Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277068A (en) * | 2013-05-21 | 2013-09-04 | 新疆力信油田工程技术有限公司 | Oil well casing pipe exhaust valve |
| CN104141558A (en) * | 2014-07-15 | 2014-11-12 | 潍柴动力股份有限公司 | Exhaust gas recirculation cooling system |
| CN110836278A (en) * | 2018-08-17 | 2020-02-25 | 中国石油化工股份有限公司 | Constant pressure valve device for oil and gas field well mouth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |