CN2395028Y - Leak-proof blowout preventer of wellhead packing - Google Patents
Leak-proof blowout preventer of wellhead packing Download PDFInfo
- Publication number
- CN2395028Y CN2395028Y CN 99216877 CN99216877U CN2395028Y CN 2395028 Y CN2395028 Y CN 2395028Y CN 99216877 CN99216877 CN 99216877 CN 99216877 U CN99216877 U CN 99216877U CN 2395028 Y CN2395028 Y CN 2395028Y
- Authority
- CN
- China
- Prior art keywords
- pressing cap
- packing box
- gland
- packing
- chamber
- 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 - Fee Related
Links
Images
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model relates to a leak-proof blowout preventing device of a packing box of a wellhead, which comprises an upper press cap, a lower press cap, a gland, a spring, a sealing body and a steel ball. The upper press cap is provided with sealing gum and a lubrication chamber, and the upper press cap and the lower press cap are mutually connected. A connection position of the upper press cap and the lower press cap composes a blowout preventing chamber, the upper and the lower press caps and the center of the gland are provided with through holes, the blowout preventing spring and the steel ball are placed between an inner wall of the blowout preventing chamber and a polished rod, a sealing piece is arranged in the sealing chamber, and lubrication oil is arranged in the lubrication chamber. The lower press cap of the utility model is directly connected with the well mouth a blowout preventing box of the wellhead. The utility model has the advantages of practicability, convenience, and simple processing, and the utility model has the functions of sealing, blowout preventing and leakage preventing and has the effect of preventing environmental pollution.
Description
The utility model relates to oil exploitation sucker rod pumping well mouth sealing device, well head packing box leakproof preventer.
At present, the on-the-spot packing box that uses its objective is to lubricate bar producing well oil pumping polish rod and packing_seal polished rod, prevents oil spout oil leaking pollution environment, and causes the crude oil waste.Its structure is an annular steel cylinder, and the lower end is connected on the well head, and the upper end is the packing chamber, places packing, compresses packing with pressure cap, and polished rod passes at the packing center.It is extensive use at the scene, but use incompatible on the producing well at stripper well and intermittence, when oil well is intermittently fuel-displaced, polished rod can not get lubricated and dry friction makes the very fast damage of packing lose sealing, causes crude oil spray leakage current to lose when oil well is fuel-displaced again, the equipment of making dirty, contaminated environment causes the reduction greatly in packing life-span simultaneously, and cost of crude oil production is increased.
The purpose of this utility model is to overcome the shortcoming of prior art and provide a kind of and provide polished rod lubricated when oil well is intermittently fuel-displaced, effectively seal polished rod, prevent leakage of oil and in the disconnected generation that prevents the well head fuel injection event when taking off of sucker rod and polished rod, guarantee equipment cleaning, increase packing application life, prevent the pollution of the environment the well head packing box leakproof preventer that reduces production costs.
The purpose of this utility model reaches like this: a kind of well head packing box leakproof preventer that comprises upper pressing cap (10), lower pressing cap (15), gland (2), spring (13) seal (5) and steel ball (12), annular seal space (4) and lubricating cavity (8) are arranged on its upper pressing cap, separate with dividing plate between two chambeies.Upper pressing cap is connected with lower pressing cap, and its junction constitutes anti-spray chamber (11), and there is through hole at upper and lower pressure cap and gland center, and polished rod (1) moves up and down in through hole.
The purpose of this utility model can also reach by following measure: upper pressing cap one end is an annular seal space, built-in seal.The other end links to each other with lower pressing cap, constitutes anti-spray chamber.The centre is a lubricating cavity, and lubrication oil is arranged in the chamber.Blow-off pipe (7) is arranged at lubricating cavity top.Seal in the annular seal space is compressed by gland (2), and the plane is furnished with application of force hole (3) on the gland.Spring and steel ball are placed between blowout prevention cavity wall and the polished rod.Lower pressing cap is the structure that all there is inner chamber at two ends, and an end links to each other with lower pressing cap, and its inner chamber constitutes anti-spray chamber, and the other end links to each other with packing box, and its step (14) compresses packing, forms the associating utilization structure with packing box.
When using the utility model well head packing box leakproof preventer, lower pressing cap, upper pressing cap are enclosed within on the polished rod from central through hole successively, lower pressing cap is connected with the well head packing box, and compresses packing.Be placed in the anti-spray chamber withstanding steel ball after the length of spring compressed, again upper pressing cap and lower pressing cap coupled together.Mention gland, top bar certainly and lubrication oil is injected in the polished rod gap in lubricating cavity, quantity is for to be as the criterion to excessive from blow-off pipe.Seal is packed in the annular seal space, and compress gland, at this moment, well head packing box leakproof preventer can start operation.
Description of drawings of the present utility model is as follows:
Fig. 1 looks sectional view for this practical master;
Fig. 2 is the utility model front view lubricating cavity and blowout prevention cavity segment sectional view;
Fig. 3 is the A-A sectional drawing of Fig. 2 lubricating cavity and anti-spray chamber sectional view;
Fig. 4 is anti-another embodiment sectional view of spray chamber of Fig. 1 front view.
The utility model is described in further detail below in conjunction with embodiment:
As figure (1); polished rod (1) is in gland (2); pass in the through hole of upper pressing cap (10) and lower pressing cap (15); seal (5) is placed in the annular seal space (4); application of force hole (3) by gland (2) compresses seal with gland; make it reach sealing; inject lubrication oil in the lubricating cavity (8); quantity is excessive being as the criterion of blow-off pipe (7) on top, lubrication oil self-lubricating chamber; its effect is a Castor Oil well head packing when oil well is fuel-displaced, can not lower the temperature to polished rod when oil well is fuel-displaced, and lubricated to well head packing and polished rod; when the well head packing lost efficacy; oil flows in the lubricating cavity, is flowed out by blow-off pipe, the equipment and protect environment of avoiding making dirty.Step (6) and (9) separate lubricating cavity, annular seal space and anti-spray chamber (11) at the middle part of upper pressing cap.Lower pressing cap is connected with upper pressing cap.The inner chamber of its junction constitutes anti-spray chamber (11) with get out of a predicament or an embarrassing situation (14), spring (13) and steel ball (12) are placed between blowout prevention cavity wall and the polished rod, also be full of lubrication oil in the anti-spray chamber, it can make polished rod and packing heat radiation, also can be in that polished rod be disconnected when taking off, steel ball enters the hole of middle step (9) under spring promotes, the fluid that the shutoff oil well sprays upward plays the blowout prevention effect.The other end of lower contact (15) has internal thread (16), is connected with the external screw thread of well head packing box, forms the structure of associating use.
Embodiment two
As Fig. 2, at boring of anti-spray chamber (11) sidewall and car box thread.Spring pressure cap (20) one ends link to each other with the box thread of anti-spray chamber areole, and spring (13) is positioned in the pressure cap.Spring props up steel ball (12).
Embodiment three
As Fig. 2, Fig. 3, step (9) changes annulus (19) into, is fixed on the bottom of lubricating cavity (8), places spin (18) on it, and clamping rings (17) is placed on spin top, annulus (17), (19) location spin (18).
Embodiment four
As Fig. 4, a U-shaped steel band (21) is connected with the step (14) of lower pressing cap around polished rod (1) and steel ball (12), spacing steel ball, and break when taking off at polished rod, make steel ball (12) accurately block through hole.
The utility model has the following advantages compared with prior art:
1. compact conformation, complete function can prolong packing 4-7 in service life doubly;
2. reduce and stop well and add the packing time, increase output, use manpower and material resources sparingly, can save again a large amount of The wellhead cleaning agent reduces production costs;
3. wide accommodation, general pumpingh well and semiagitator all can use, and have prevented polished rod break Take off and cause the oil gas ejection and contaminated environment and lost units.
Claims (7)
1, a kind of well head packing box leakproof preventer, it is characterized in that it comprises upper pressing cap (10), lower pressing cap (15), gland (2), spring (13), seal (5) and steel ball (12), annular seal space (4) and lubricating cavity (8) are arranged on the upper pressing cap, upper pressing cap is connected with lower pressing cap, its junction constitutes anti-spray chamber (11), and there is through hole at last lower pressing cap and gland center.
2, packing box leakproof preventer according to claim 1 is characterized in that upper pressing cap one end is an annular seal space, and the other end links to each other with lower pressing cap, constitutes anti-spray chamber, and the centre is a lubricating cavity.
3, packing box leakproof preventer according to claim 1 is characterized in that placing packing in the annular seal space, is compressed by gland.
4, packing box leakproof preventer according to claim 3 is characterized in that gland (2) upward is furnished with application of force hole (3) in the plane.
5, packing box leakproof preventer according to claim 1 and 2 is characterized in that dress lubrication oil in the lubricating cavity, and blow-off pipe (7) is arranged at lubricating cavity top.
6, leak preventer according to claim 1 or 2 or 3 described packing boxs, it is characterized in that spring and steel ball are placed between the blowout prevention cavity wall and polished rod (1) of upper pressing cap and lower pressing cap formation.
7, according to claim 1 or 2 or 3 or 4 described packing box leakproof preventers, it is characterized in that lower pressing cap is the structure that all there is inner chamber at two ends, an end and upper pressing cap constitute anti-spray chamber, and the other end links to each other with packing box, and its step (14) compresses packing in the packing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216877 CN2395028Y (en) | 1999-07-15 | 1999-07-15 | Leak-proof blowout preventer of wellhead packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216877 CN2395028Y (en) | 1999-07-15 | 1999-07-15 | Leak-proof blowout preventer of wellhead packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2395028Y true CN2395028Y (en) | 2000-09-06 |
Family
ID=34008431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99216877 Expired - Fee Related CN2395028Y (en) | 1999-07-15 | 1999-07-15 | Leak-proof blowout preventer of wellhead packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2395028Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915057A (en) * | 2019-04-16 | 2019-06-21 | 延长油田股份有限公司 | A kind of new oil formula polish rod lubricating device |
| CN111963095A (en) * | 2020-08-11 | 2020-11-20 | 大庆市富隆达石油工程机械设备有限公司 | Wellhead blowout preventer |
| CN116607908A (en) * | 2023-07-20 | 2023-08-18 | 北京汉诺威自控技术有限公司 | Polished rod structure |
-
1999
- 1999-07-15 CN CN 99216877 patent/CN2395028Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915057A (en) * | 2019-04-16 | 2019-06-21 | 延长油田股份有限公司 | A kind of new oil formula polish rod lubricating device |
| CN111963095A (en) * | 2020-08-11 | 2020-11-20 | 大庆市富隆达石油工程机械设备有限公司 | Wellhead blowout preventer |
| CN116607908A (en) * | 2023-07-20 | 2023-08-18 | 北京汉诺威自控技术有限公司 | Polished rod structure |
| CN116607908B (en) * | 2023-07-20 | 2023-09-29 | 北京汉诺威自控技术有限公司 | Polished rod structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211370338U (en) | Self-adaptive large-angle eccentric wear prevention wellhead sealing device | |
| CN2937459Y (en) | Double-offset polish rod sealer for pumping well | |
| CN201059291Y (en) | Power steering oil tank | |
| CN2395028Y (en) | Leak-proof blowout preventer of wellhead packing | |
| CN202531086U (en) | Lubricating type oil sucking machine well mouth polish rod sealing packing case | |
| CN204552678U (en) | Pumping well polish rod auto-compensation lubrication and seal device | |
| CN202215182U (en) | Double-seal lubrication type self-sealing packer box | |
| CN103552827A (en) | Three-lip combined sealing device of carrier roller | |
| CN201184171Y (en) | Bias-wearing-proof pumping unit | |
| CN202000946U (en) | Novel wellhead double-seal box | |
| CN114923108A (en) | Automatic alarm device for oil well packing lubrication | |
| CN212296289U (en) | Polished rod lubricating arrangement for gas production wellhead assembly | |
| CN202900130U (en) | Pumping well mouth lubrication double seal device | |
| CN106968631A (en) | A kind of long-acting anti-oil leakage device of well mouth of oil well | |
| CN2183460Y (en) | Moveable centrifugal boost pump | |
| CN218062265U (en) | Automatic manual double-acting well plugging device and stuffing box | |
| CN203239271U (en) | Annular preventer | |
| CN212360511U (en) | Bearing lubricating device | |
| CN111706502A (en) | Sealing device for high-pressure plunger water injection pump packing of offshore oil platform | |
| CN202228035U (en) | Packing box for oil well | |
| CN2595994Y (en) | Pressure-bearing type grease-filling apparatus | |
| CN201391267Y (en) | Drag reduction multifunctional well plugging device | |
| CN220101236U (en) | Automatic energy-charging type wellhead sealer | |
| CN201120740Y (en) | Overcurrent protection oil cylinder of a press | |
| CN210195706U (en) | Oil type polished rod lubrication blowout preventer |
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 |