CN213980739U

CN213980739U - Wellhead blowout preventer of oil pumping unit

Info

Publication number: CN213980739U
Application number: CN202022788047.2U
Authority: CN
Inventors: 李建; 邓军安
Original assignee: Xi'an Tianzhuo Energy Technology Co ltd
Current assignee: Xi'an Tianzhuo Energy Technology Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-17
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a pumping unit well mouth blowout preventer, which relates to the technical field of oil well blowout preventer and solves the technical problems of complicated replacement procedures and too high cost after the core body of the well mouth blowout preventer is damaged, the utility model relates to a pumping unit well mouth blowout preventer which comprises a vertical pipe and two transverse pipes, wherein the upper end and the lower end of the vertical pipe are respectively provided with a flange, the two transverse pipes are symmetrically connected with the two sides of the vertical pipe, the inside of each transverse pipe is respectively provided with a first lead screw and a core body, the side surfaces of the two transverse pipes are respectively provided with a valve component, and the inner walls of the two transverse pipes are respectively provided with a groove; the utility model has the advantages of reduce manpower and material resources input, reduce the cost, realize changing the core fast and simply.

Description

Wellhead blowout preventer of oil pumping unit

Technical Field

The utility model relates to an oil well shut-in technical field, more specifically relate to a pumping unit well head blowout preventer.

Background

In the daily production of oil production well, the application of well head blowout preventer is very extensive, and well head blowout preventer generally includes a standpipe, two violently manage and install two lead screws and two semicircular cores in two violently pipes respectively to be provided with rubber seal on the core, the core is installed at the tip of lead screw, two cores cooperate relatively and form an annular cylindric sealed face, thereby will press from both sides the upper and lower both sides of the sucker rod between them sealed isolation, prevent that the pressurized liquid in the pit from returning from the well head.

In production practice, the wellhead blowout preventer can cause core body damage due to daily use consumption, damage caused by long-time oil-gas-water soaking corrosion, quality age and the like, and needs to be maintained and replaced; at present, the core body of the well head blowout preventer needs to be well killing and replaced after the load of the oil pumping unit is removed, the process is complicated, too many manpower and material resources are needed, the labor intensity is high, and the economic cost is high.

Therefore, the utility model provides a to above problem, provide a pumping unit well head blowout preventer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problem that the replacement process is complicated, the cost is too high after the current well head blowout preventer core body destroys, the utility model provides a well head blowout preventer of pumping unit.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a pumping unit well head blowout preventer, violently manage including a standpipe and two, the upper and lower both ends of standpipe respectively are equipped with a flange, two violently manage the both sides of symmetric connection at the standpipe, every violently inside first lead screw and the core of respectively installing of managing, the front end at first lead screw is installed to the core, the end of first lead screw is equipped with first pressure cap, the both sides of standpipe respectively are equipped with a threaded connection mouth, two violently manage and respectively pass through threaded connection mouth on the standpipe, two violently manage and threaded connection mouth between be bayonet seal structure, two end of violently managing respectively have a thread bush through threaded connection, the central authorities of first thread bush are equipped with the screw hole, first lead screw passes through threaded connection in the thread hole, two sides of violently managing respectively are equipped with the valve member, two inner walls of violently managing respectively are equipped with the recess.

Above-mentioned, the valve member includes that the second presses cap, second lead screw, second thread bush, nozzle stub, flashboard and sealing member, and the nozzle stub is with violently managing the welding, and there is the second thread bush terminal end of nozzle stub through threaded connection, and the central authorities of second thread bush are equipped with the screw hole, and the second lead screw passes through threaded connection in the screw hole, and the front end at the second lead screw is installed to the flashboard, and the end of second lead screw is equipped with the second and presses the cap, and the front end at the flashboard is installed to the sealing member.

Wherein the sealing element is made of polytetrafluoroethylene; the thickness of the seal is less than the depth of the groove.

The utility model has the advantages as follows:

the utility model relates to a pumping unit well head blowout preventer, set up the valve assembly on the violently pipe respectively, during normal work, the flashboard in the valve assembly is opened, the core in the violently pipe can move in certain extent, realize the sealed isolation to the sucker rod, when needing to change the core, take out the core, and put down the flashboard, go straight into violently the pipe groove, thus seal the passageway in the violently pipe, play the effect of preventing the liquid from flowing along violently the pipe under pressure in the oil well;

the utility model relates to a well head blowout preventer of beam-pumping unit has realized not needing the kill-job when changing the core, has simplified the process of changing the core to satisfy the environmental protection requirement that the oil well does not have the outflow, have the advantage that reduces manpower and materials input, reduce the cost, realize changing the core fast portably.

Drawings

Fig. 1 is a schematic structural diagram of a wellhead blowout preventer of a pumping unit of the utility model;

FIG. 2 is a schematic view of a cross-sectional structure of a horizontal pipe of a wellhead blowout preventer of the pumping unit of the present invention;

reference numerals: 10-a threaded connection; 11-a vertical pipe; 12-a transverse pipe; 13-a first screw rod; 14-a first head; 15-a valve assembly; 16-a first press cap; 17-a core; 18-a groove; 151-second press cap; 152-a second lead screw; 153-a second head; 154-short tube; 155-a gate plate; 156-seal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Examples

As shown in fig. 1, a wellhead blowout preventer of an oil pumping unit, including a vertical pipe 11 and two horizontal pipes 12, the upper and lower both ends of vertical pipe 11 are respectively equipped with a flange, two horizontal pipes 12 are symmetrically connected in the both sides of vertical pipe 11, each horizontal pipe 12 is internally installed with a first lead screw 13 and a core 17, core 17 is installed at the front end of first lead screw 13, the end of first lead screw 13 is equipped with first pressure cap 16, the both sides of vertical pipe 11 are respectively equipped with a threaded connection port 10, two horizontal pipes 12 are respectively connected on vertical pipe 11 through threaded connection port 10, be bayonet seal structure between two horizontal pipes 12 and the threaded connection port, the end of two horizontal pipes 12 is respectively connected with first thread bush 14 through screw thread, the center of first thread bush 14 is equipped with the screw hole, first lead screw 13 is connected in the screw hole through screw thread, the side of two horizontal pipes 12 is respectively equipped with valve member 15, the inner wall of two horizontal pipes 12 is respectively equipped with recess 18. The two transverse pipes 12 are respectively connected to the vertical pipe 11 through the threaded connectors 10, so that the disassembly and assembly are convenient, and the disassembly and inspection are convenient.

As shown in fig. 2, the valve assembly 15 includes a second pressing cap 151, a second lead screw 152, a second threaded sleeve 153, a short pipe 154, a shutter 155 and a sealing member 156, the short pipe 154 is welded to the transverse pipe 12, the end of the short pipe 154 is connected with the second threaded sleeve 153 through a thread, a threaded hole is formed in the center of the second threaded sleeve 153, the second lead screw 152 is connected in the threaded hole through a thread, the shutter 155 is installed at the front end of the second lead screw 152, the end of the second lead screw 152 is provided with the second pressing cap 151, and the sealing member 156 is installed at the front end of the shutter 155.

The utility model relates to a pumping unit well head blowout preventer, set up the valve assembly on the horizontal pipe 12 respectively, during normal work, flashboard 155 in the valve assembly is opened, the core 17 in the horizontal pipe 12 can move in certain range, realize the sealed isolation to the sucker rod, when needing to change the core 17, take out the core 17, and put down the flashboard 155, go straight into horizontal pipe 12 recess 18, thus seal the passageway in the horizontal pipe 12, play and prevent the oil well from pressing the effect that the liquid flows along violently managing under the pressure; the cost burden brought by the well killing operation is saved, the environment-friendly requirement of no outflow of the oil well is met, and the problems of inconvenience in core body replacement and complex process are solved.

Wherein the sealing member 156 is made of teflon and the thickness of the sealing member 156 is smaller than the depth of the groove 18. The polytetrafluoroethylene has the characteristics of corrosion resistance, wear resistance and long service life, can ensure that the gate plate 155 and the groove 18 are reliable and tight, and realizes the good sealing effect.

Claims

1. The utility model provides a pumping unit well head blowout preventer, includes that a standpipe (11) and two violently manage (12), and the upper and lower both ends of standpipe (11) respectively are equipped with a flange, and two violently manage (12) symmetric connection in the both sides of standpipe (11), and every violently manage (12) inside respectively installs a first lead screw (13) and core (17), the front end at first lead screw (13) is installed to core (17), the end of first lead screw (13) is equipped with first pressure cap (16), its characterized in that, the both sides of standpipe (11) respectively are equipped with a threaded connection mouth (10), two violently manage (12) and respectively connect through threaded connection mouth (10) on standpipe (11), the end of two violently managing (12) respectively has first thread bush (14) through threaded connection, and the central authorities of first thread bush (14) are equipped with the screw hole, first lead screw (13) are through threaded connection in the screw hole, the lateral surfaces of the two transverse pipes (12) are respectively provided with a valve component (15), and the inner walls of the two transverse pipes (12) are respectively provided with a groove (18).

2. The wellhead blowout preventer according to claim 1, wherein a plug-in sealing structure is arranged between the two transverse pipes (12) and the threaded connecting ports.

3. The wellhead blowout preventer according to claim 1, wherein the valve assembly (15) comprises a second pressing cap (151), a second screw rod (152), a second threaded sleeve (153), a short pipe (154), a shutter (155) and a sealing element (156), the short pipe (154) is welded with the transverse pipe (12), the second threaded sleeve (153) is connected to the tail end of the short pipe (154) through threads, a threaded hole is formed in the center of the second threaded sleeve (153), the second screw rod (152) is connected to the threaded hole through threads, the shutter (155) is installed at the front end of the second screw rod (152), the second pressing cap (151) is arranged at the tail end of the second screw rod (152), and the sealing element (156) is installed at the front end of the shutter (155).

4. A wellhead blowout preventer according to claim 3, wherein the seal (156) is made of polytetrafluoroethylene.

5. A wellhead blowout preventer according to claim 3, wherein the thickness of the seal (156) is less than the depth of the groove (18).