CN213063519U

CN213063519U - Wellhead polish rod breaking blowout preventer of oil pumping unit

Info

Publication number: CN213063519U
Application number: CN202021913746.9U
Authority: CN
Inventors: 李文举; 郭自杰; 杨家栋; 弥江; 王宏波; 王云梅; 贾强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-27
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a blowout preventer for the breakage of a polish rod at a wellhead of a pumping unit, in particular to the technical field of oil extraction equipment, which comprises a blowout preventer main body and a polish rod, wherein the blowout preventer main body is provided with upper and lower through holes which are used for the up-and-down movement of the polish rod, the rear end of the blowout preventer main body is provided with an end cover, the end cover is detachably connected with the blowout preventer main body, one side of the polish rod in the blowout preventer main body is provided with an elastic device, a sealing device, a bearing and a bearing installation device, the rear end of the elastic device is fixedly connected with the end cover, the front end of the elastic device is connected with the sealing device, the front end of the sealing device is connected with the bearing installation device, the bearing is installed on the bearing installation device, the bearing is in contact connection with the polish rod, the other side, the well mouth can be sealed automatically and quickly when the polished rod breaks and falls off, and crude oil is prevented from being sprayed out.

Description

Wellhead polish rod breaking blowout preventer of oil pumping unit

Technical Field

The utility model relates to an oil recovery equipment technical field, more specifically say, the utility model relates to a pumping unit well head polished rod takes off blowout preventer absolutely.

Background

In the process of pumping oil from a pumping well, mechanical abrasion or corrosion sudden fracture is often caused due to long-term use of a polish rod, so that blowout of the pumping well is easily caused, not only is resource and property loss caused, but also the normal adoption of petroleum is influenced due to great pollution to the environment caused by crude oil leakage. And along with the development of well site implementation digital control, often unmanned on duty, current well head packing box can play sealed effect, but has not enough, can not obtain effective control at the very first time after the well head polished rod breaks off, causes well site environmental pollution comparatively serious, and crude oil loss is big.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a pumping unit well head polished rod takes off blowout preventer absolutely, can be after the polished rod fracture can be automatic seal the well head, can resources are saved.

In order to achieve the above object, the utility model provides a following technical scheme: the anti-blowout device comprises an anti-blowout main body and a polished rod, wherein an upper through hole and a lower through hole are formed in the anti-blowout main body, the through holes are used for the polished rod to move up and down, an end cover is arranged at the rear end of the anti-blowout main body, the end cover is detachably connected with the anti-blowout main body, an elastic device, a sealing device, a bearing and a bearing installation device are arranged on one side of the polished rod in the anti-blowout main body, the rear end of the elastic device is fixedly connected with the end cover, the front end of the elastic device is connected with the sealing device, the front end of the sealing device is connected with the bearing installation device, the bearing is installed on the bearing installation device, the bearing is in contact connection with the.

Further, the elastic device, the sealing device, the bearing and the bearing mounting device are integrated.

Further, the end cover and the blowout prevention body are fixedly connected through a nut.

Further, the elastic device is a spring.

Further, the sealing device comprises a piston and a sealing ball, a second cavity is arranged in the piston, the sealing ball is arranged in the second cavity, and the diameter of the sealing ball is equal to that in the second cavity.

Compared with the prior art, the utility model discloses a technological effect and advantage:

1. the utility model discloses a set up resilient means and sealing device and can realize sealing simple structure, convenient to use automatically and fast to the well head when the polished rod fracture drops.

2. The utility model discloses a set up the end cover and can dismantle with preventing spouting the main part and be connected, the end cover passes through nut fixed mounting and in the rear end of preventing spouting the main part, and the maintenance of being convenient for or change spare part.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference signs are: 1. the blowout prevention device comprises a blowout prevention main body, a polish rod 2, a through hole 3, an end cover 4, a bearing 5, a bearing mounting device 6, a first cavity 7, a nut 8, a spring 9, a piston 10, a sealing ball 11 and a second cavity 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The wellhead polish rod breaking and dropping blowout preventer of the oil pumping unit as shown in the attached figure 1 comprises a blowout preventer body 1 and a polish rod 2, the blowout prevention main body 1 is provided with an upper through hole 3 and a lower through hole 3, the through hole 3 is used for the up-and-down movement of the polish rod 2, an end cover 4 is arranged at the rear end of the blowout preventing body 1, the end cover 4 is detachably connected with the blowout preventing body 1, one side of the polished rod 2 in the blowout prevention main body 1 is provided with an elastic device, a sealing device, a bearing 5 and a bearing installation device 6, the rear end of the elastic device is fixedly connected with the end cover 4, the front end of the elastic device is connected with the sealing device, the front end of the sealing device is connected with the bearing mounting device 6, the bearing 5 is mounted on the bearing mounting device 6, the bearing 5 is in contact connection with the polish rod 2, and a first cavity 7 is arranged on the other side of the polish rod 2 in the blowout prevention body 1.

In this embodiment, the resilient means, the sealing means, the bearing 5 and the bearing mounting means 6 are integral.

In this embodiment, the end cover 4 and the blowout prevention main body 1 are fixedly connected through the nut 8, can be detachably connected, are convenient to maintain, and have a simple structure.

In this embodiment, the elastic device is a spring 9, when the polish rod 2 normally works, the spring 9 is in a compressed state, and when the polish rod 2 breaks and falls off, the spring 9 rebounds to push the sealing device to move forward.

In this embodiment, the sealing device includes a piston 10 and a sealing ball 11, a second cavity 12 is disposed in the piston 10, the sealing ball 11 is disposed in the second cavity 12, the diameter of the sealing ball 11 is equal to the diameter of the inner wall of the second cavity 12, and the sealing ball in the second cavity 12 is used for sealing the through hole 3.

The utility model discloses a theory of operation: during normal work, polished rod 2 is the motion from top to bottom along through-hole 3, the bearing 5 that sets up is connected with polished rod 2 contact, reduce the friction, make polished rod 2 normally work, when polished rod 2 fracture drops, promote piston 10 forward motion under the effort of spring 9, piston 10 promotes bearing installation device 6 forward motion, when piston 10 moves the foremost of first cavity 7, the second cavity 12 that is equipped with ball sealer 11 aligns with through-hole 3 of polished rod 2 motion, ball sealer plugs up through-hole 3, piston 10 closely laminates with the internal diameter of preventing spouting main part 1 under the effect of pit shaft pressure, plug up the export, ball sealer 11 moves on pushing up the medial surface of preventing spouting main part 1 under the effect of pit shaft pressure, plug up the well head, form sealedly, thereby play the sealing action and prevent crude oil blowout.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The wellhead polished rod breaking and releasing blowout preventer is characterized by comprising a blowout preventer body (1) and a polished rod (2), wherein the blowout preventer body (1) is provided with upper and lower through holes (3), the through holes (3) are used for the up-and-down movement of the polished rod (2), the rear end of the blowout preventer body (1) is provided with an end cover (4), the end cover (4) is detachably connected with the blowout preventer body (1), one side of the polished rod (2) in the blowout preventer body (1) is provided with an elastic device, a sealing device, a bearing (5) and a bearing mounting device (6), the rear end of the elastic device is fixedly connected with the end cover (4), the front end of the elastic device is connected with the sealing device, the front end of the sealing device is connected with the bearing mounting device (6), the bearing (5) is mounted on the bearing mounting device (6), and the bearing (5) is in contact connection with the polished rod (2), the other side of the polish rod (2) in the blowout prevention main body (1) is provided with a first cavity (7).

2. The wellhead polish rod breaking and blowout preventing device of the oil pumping unit according to claim 1, wherein the elastic device, the sealing device, the bearing (5) and the bearing mounting device (6) are integrated.

3. The wellhead polish rod breaking and blowout preventing device of the oil pumping unit according to claim 1, wherein the end cover (4) is fixedly connected with the blowout preventing body (1) through a nut (8).

4. The wellhead polish rod breaking and blowout preventing device of the oil pumping unit according to claim 1, wherein the elastic device is a spring (9).

5. The wellhead polish rod breaking and blowout preventing device of the oil pumping unit according to claim 1, wherein the sealing device comprises a piston (10) and a sealing ball (11), a second cavity (12) is arranged in the piston (10), the sealing ball (11) is placed in the second cavity (12), and the diameter of the sealing ball (11) is equal to that of the inner wall of the second cavity (12).