CN216950306U - Blowout preventer for rod breakage of oil well mouth - Google Patents
Blowout preventer for rod breakage of oil well mouth Download PDFInfo
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- CN216950306U CN216950306U CN202220116405.1U CN202220116405U CN216950306U CN 216950306 U CN216950306 U CN 216950306U CN 202220116405 U CN202220116405 U CN 202220116405U CN 216950306 U CN216950306 U CN 216950306U
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Abstract
The utility model discloses an oil well wellhead rod breaking blowout preventer, which comprises a shell, an elastic part and a valve ball, wherein a vertical channel and a transverse channel are arranged in the shell, the vertical channel is vertically arranged, the transverse channel is communicated with the vertical channel, the vertical channel penetrates through the shell and serves as a channel for a polish rod to move up and down, the valve ball is accommodated in the transverse channel, one end of the elastic part is connected with the valve ball, the other end of the elastic part is connected with the inner side wall of the shell, and the valve ball is embedded into the intersection of the vertical channel and the transverse channel under the action of elastic force of the elastic part to plug the vertical channel at the moment when the polish rod breaks off. The oil well wellhead rod breaking blowout preventer provided by the utility model can rapidly plug the moving channel of the polish rod by extruding the valve ball through the elastic piece when the polish rod of the oil well breaks off, so that the crude oil in the oil pipe is prevented from splashing out of the wellhead to cause environmental pollution.
Description
Technical Field
The utility model relates to the field of safety and environmental protection in oil exploitation, in particular to a blowout preventer for rod fracture of an oil well wellhead.
Background
At present, each oil field is used for extracting crude oil through an oil pumping unit. In the production process of the oil pumping unit, the stress load on the polished rod is constantly changed due to the real-time change of a liquid column in a shaft and the influence of wax deposition and scaling in the shaft. When the polished rod is operated for a long time under such an operating state, stress fatigue occurs, thereby causing breakage. In some oil fields for exploiting thick oil, the eccentric wear problem of the sucker rod is more serious, and the breaking and the falling of the polished rod are more frequent.
Once the polished rod is broken and separated, no person finds and processes the polished rod untimely, so that a large amount of crude oil resources are wasted; meanwhile, the crude oil sprayed on a well site can cause environmental pollution, and the escaped toxic and harmful gas can generate potential safety hazards.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a blowout preventer for oil well wellhead rod fracture, and aims to seal an oil gas channel when a polish rod is broken and detached at a wellhead, so that blowout accidents are avoided.
In order to achieve the purpose, the utility model provides an oil well wellhead rod blowout preventer, which comprises a shell, an elastic part and a valve ball, wherein a vertical channel and a transverse channel are arranged in the shell, the vertical channel is vertically arranged, the transverse channel is communicated with the vertical channel, the vertical channel penetrates through the shell to be used as a channel for a polish rod to move up and down, the valve ball is accommodated in the transverse channel, one end of the elastic part is connected with the valve ball, the other end of the elastic part is connected with the inner side wall of the shell, and the valve ball is embedded into the intersection of the vertical channel and the transverse channel under the action of elastic force of the elastic part to plug the vertical channel when the polish rod is broken off.
Preferably, the housing comprises a blowout preventer body and an end cover detachably connected with the blowout preventer body, the vertical channel and the transverse channel are both positioned inside the blowout preventer body, and the end cover closes the opening of the transverse channel of the blowout preventer body.
Preferably, the end cap is a plug threadedly connected to the blowout preventer body.
Preferably, the preventer body includes connecting portion and locking portion, and connecting portion and locking portion are cylindrical structure, and the axis and the polished rod axis parallel arrangement of connecting portion, the axis and the perpendicular setting of polished rod of locking portion, vertical passageway and transverse channel all are located inside connecting portion, offer in the locking portion with transverse channel's fluting, the fluting runs through in locking portion, the fluting one end communicates with the transverse channel of connecting portion, the supporting has the plug on the grooved other end.
Preferably, the connecting portion and the locking portion are integrally formed.
Preferably, the elastic part is a conical spring, the flaring end of the conical spring is fixedly connected with the plug, and the necking end of the conical spring is fixedly connected with the valve ball.
Preferably, the valve ball is made of polytetrafluoroethylene so as to reduce abrasion caused when the polish rod moves in the vertical channel.
Preferably, the valve ball is a hollow sphere.
Preferably, the end part of the transverse channel, which is far away from the end cover, protrudes out of the vertical channel, and when the polish rod is disconnected, the valve ball is abutted with the end part of the transverse channel, which is far away from the end cover.
The oil well wellhead rod breaking blowout preventer provided by the utility model can rapidly plug a moving channel (namely a vertical channel) of the polish rod by extruding the valve ball through the elastic piece when the polish rod of the oil well breaks off, so that crude oil in an oil pipe is prevented from splashing out of a wellhead to cause environmental pollution. This disconnected preventer of oil well wellhead rod adopts the valve ball of hollow polytetrafluoroethylene material, and the polished rod reciprocates in the polished rod passageway and also can not cause wearing and tearing to the valve ball, also can not drop into oil pipe when shutoff polished rod passageway simultaneously, has longer service life. The oil well wellhead rod blowout preventer can be connected to a packing box in a welding mode, is suitable for pumping units of all models, particularly unattended oil well platforms, and has the characteristics of sensitive reaction and firm sealing.
Drawings
FIG. 1 is a schematic structural view of an oil well wellhead rod-break blowout preventer of the present invention;
FIG. 2 is a schematic structural view of a housing in the wellhead rod break blowout preventer of the present invention;
FIG. 3 is a schematic sectional view taken along the line A-A in FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along the line B-B in FIG. 2;
FIG. 5 is a schematic structural view from a perspective of a conical spring in the wellhead rod-break blowout preventer of the present invention;
FIG. 6 is a schematic structural view of a conical spring in the wellhead rod-break blowout preventer of the present invention from another perspective.
In the figure: 1-a shell; 2-Versailles; 3-a conical spring; 4-plugging with a thread; 5-a polish rod.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 6, in the preferred embodiment, an oil well wellhead rod blowout preventer comprises a housing 1, an elastic member and a valve ball 2, wherein a vertical channel and a transverse channel communicated with the vertical channel are arranged in the housing 1, the vertical channel penetrates through the housing 1 to serve as a channel for a polish rod 5 to move up and down, the valve ball 2 is accommodated in the transverse channel, one end of the elastic member is connected with the valve ball 2, the other end of the elastic member is connected with the inner side wall of the housing 1, and when the polish rod 5 is broken, the valve ball 2 is embedded into the intersection of the vertical channel and the transverse channel under the elastic force of the elastic member to block the vertical channel.
Specifically, referring to fig. 1 to 4, the housing 1 includes a blowout preventer body and an end cover detachably connected thereto, the vertical channel and the lateral channel are both located inside the blowout preventer body, and the end cover closes an opening of the lateral channel of the blowout preventer body.
In this embodiment, the end cover is the plug 4 with preventer body threaded connection, adopts plug 4 to have the convenient advantage of installation and dismantlement to be convenient for when elastic component or valve ball 2 damages, can in time maintain and change.
In this embodiment, the preventer body includes connecting portion and locking portion, and connecting portion and locking portion are cylindrical structure, the axis and the 5 axis parallel arrangement of polished rod of connecting portion, and the axis and the polished rod 5 of locking portion set up perpendicularly, and vertical passageway and transverse channel all are located inside connecting portion, offer in the locking portion with the fluting of transverse channel, the fluting runs through in locking portion, and the fluting one end communicates with the transverse channel of connecting portion, and the support has plug 4 on the grooved other end. The connecting part and the locking part are integrally formed.
In this embodiment, referring to fig. 1, 5 and 6, the elastic member is a conical spring 3, an expanded end of the conical spring 3 is fixedly connected with the plug 4, and a contracted end of the conical spring 3 is fixedly connected with the valve ball 2.
The valve ball 2 is made of polytetrafluoroethylene materials, so that abrasion caused by friction between the polish rod 5 and the valve ball 2 when the polish rod moves in the vertical channel is reduced, and the service life of the blowout preventer is prolonged. The valve ball 2 is a hollow ball body, and can not fall to a shaft to cause secondary damage when the polish rod 5 is broken off in the channel of the polish rod 5.
Further, the end part of the transverse channel departing from the end cover protrudes out of the vertical channel (namely, the transverse channel is also arranged on the side, which is not connected with the valve ball 2, of the polish rod 5), and when the polish rod 5 is disconnected, the valve ball 2 is abutted to the end part of the transverse channel departing from the end cover. That is, the length of the transverse channel needs to extend into one side of the polish rod 5 which is not contacted with the valve ball 2, so that when the polish rod 5 is broken off, the valve ball 2 can completely block the vertical channel. The vertical channel is a cylindrical channel, the transverse channel is a cylindrical channel on one side, and the other side can be a spherical channel.
The working principle of the blowout preventer for the oil well wellhead rod fracture is as follows: when the polish rod 5 is broken, the valve ball 2 is extruded by the conical spring 3 and is rapidly connected with the right half groove of the transverse channel, the valve ball 2 is acted by upward force of liquid returned from the well bottom and is attached to the top of the vertical channel, and the vertical channel is sealed to form a closed space, so that the purpose of preventing the liquid returned from the well bottom from leaking is achieved.
According to the oil well wellhead rod breaking blowout preventer provided by the utility model, when the oil well polished rod 5 breaks off, the elastic piece extrudes the valve ball 2, so that a moving channel (namely a vertical channel) of the polished rod 5 can be rapidly plugged, and crude oil in an oil pipe is prevented from splashing out of a wellhead to cause environmental pollution. This disconnected preventer of oil well wellhead rod adopts the valve ball 2 of hollow polytetrafluoroethylene material, and polished rod 5 reciprocates also can not cause wearing and tearing to valve ball 2 in polished rod 5 passageway, also can not drop into oil pipe when shutoff polished rod 5 passageway simultaneously, has longer service life. The oil well wellhead rod blowout preventer can be connected to a packing box in a welding mode, is suitable for pumping units of all models, particularly unattended oil well platforms, and has the characteristics of sensitive reaction and firm sealing.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are intended to be covered by the scope of the present invention.
Claims (9)
1. The utility model provides an oil well wellhead rod blowout preventer that breaks, a serial communication port, including casing, elastic component and valve ball, wherein, be equipped with the vertical channel of vertical setting and with the horizontal channel of vertical channel intercommunication in the casing, vertical channel runs through on the casing in order to be the passageway that the polished rod reciprocated, the valve ball holds inside horizontal channel, the one end and the valve ball of elastic component are connected, the other end and the casing inside wall of elastic component are connected, the valve ball receives the intersection of the elastic force effect embedding vertical channel of elastic component and horizontal channel to be in the shutoff vertical channel in the moment that the polished rod breaks off.
2. The wellhead rod-break blowout preventer of claim 1, wherein the housing comprises a blowout preventer body and an end cap removably connected thereto, the vertical channel and the lateral channel each being located inside the blowout preventer body, the end cap closing off an opening of the lateral channel of the blowout preventer body.
3. The wellhead rod-break blowout preventer of claim 2, wherein the end cap is a plug threadedly connected to the blowout preventer body.
4. The blowout preventer according to claim 3, wherein the blowout preventer body comprises a connecting portion and a locking portion, the connecting portion and the locking portion are both cylindrical structures, the axis of the connecting portion is parallel to the axis of the polish rod, the axis of the locking portion is perpendicular to the axis of the polish rod, the vertical channel and the transverse channel are both located inside the connecting portion, the locking portion is provided with a slot communicated with the transverse channel, the slot penetrates through the locking portion, one end of the slot is communicated with the transverse channel of the connecting portion, and the other end of the slot is supported by a plug.
5. The wellhead rod-break blowout preventer of claim 4, wherein the connecting portion and the locking portion are integrally formed.
6. The wellhead rod blowout preventer of claim 3, wherein the resilient member is a conical spring, a flared end of the conical spring is fixedly connected to the plug, and a necked-in end of the conical spring is fixedly connected to the valve ball.
7. The wellhead rod-break blowout preventer of claim 1, wherein the valve ball is made of polytetrafluoroethylene to reduce wear caused by the movement of the polish rod in the vertical channel.
8. The wellhead rod-break blowout preventer of claim 1, wherein the valve ball is a hollow sphere.
9. An oil well head rod blowout preventer according to any one of claims 2 to 8, wherein the end of the transverse channel facing away from the end cap protrudes outside the vertical channel, and the valve ball abuts the end of the transverse channel facing away from the end cap when the polish rod is broken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116405.1U CN216950306U (en) | 2022-01-14 | 2022-01-14 | Blowout preventer for rod breakage of oil well mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116405.1U CN216950306U (en) | 2022-01-14 | 2022-01-14 | Blowout preventer for rod breakage of oil well mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216950306U true CN216950306U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220116405.1U Active CN216950306U (en) | 2022-01-14 | 2022-01-14 | Blowout preventer for rod breakage of oil well mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216950306U (en) |
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2022
- 2022-01-14 CN CN202220116405.1U patent/CN216950306U/en active Active
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