CN210977383U

CN210977383U - Telescopic blowout preventer of pumping unit wellhead

Info

Publication number: CN210977383U
Application number: CN201922217242.7U
Authority: CN
Inventors: 刘飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-07-10
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses a telescopic blowout preventer of beam-pumping unit well head, the novel nipple rectifier comprises a cylindrical shel, defeated oil pipe has been run through to the inside of barrel, defeated oil pipe's the left and right sides all runs through there is the spout, first bracing piece has all been welded to the inside left and right sides of barrel, the one end of first bracing piece articulates there is L type dead lever, L type dead lever runs through in the spout, the bottom screwed connection of L type dead lever has first fixed block, the one end welding of first fixed block has the second fixed block, the one end that first fixed block was kept away from to the second fixed block runs through in defeated oil pipe, L type dead lever is close to the first extension spring of outside fixedly connected with of first fixed block, and through L type dead lever, first fixed block and second fixed block when the oil pressure is too big, can produce the impact force to L type dead lever for L type dead lever upwards moves, and first fixed block and the second fixed block of connecting the L type dead lever other end.

Description

Telescopic blowout preventer of pumping unit wellhead

Technical Field

The utility model relates to an oil field prevents spouting technical field, specifically is a telescopic blowout preventer of beam-pumping unit well head.

Background

The blowout preventer is used for closing the well mouth in the operation processes of oil testing, well repairing, well completion and the like to prevent well blowout accidents, integrates the full sealing function and the half sealing function into a whole, has the characteristics of simple structure, easy operation, high pressure resistance and the like, and is a well mouth safety sealing device for preventing well blowout commonly used in oil fields. When drilling petroleum well, it is installed on the wellhead casing head to control the well-blowing device of high-pressure oil, gas and water. When the pressure of oil gas in the well is very high, the blowout preventer can close (close) the well mouth. When heavy mud is pressed in from a drill rod, a four-way valve is arranged below a flashboard of the heavy mud pumping unit, the mud which is invaded by gas can be replaced, the pressure of a liquid column in a well is increased, so that high-pressure oil gas can be sprayed out, in the extraction operation of petroleum, the polished rod is frequently subjected to mechanical abrasion or corrosion and sudden fracture due to long-term use, the well blowout of a pumping well is easily caused by the conventional device, and the normal adoption of the petroleum is influenced due to the great pollution of the leakage of crude oil to the environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a telescopic blowout preventer of beam-pumping unit well head to solve the problem that proposes in the above-mentioned background art.

In order to achieve the purpose, the utility model provides a telescopic blowout preventer of beam-pumping unit well head, the novel nipple rectifier comprises a cylindrical shel, defeated oil pipe has been run through to the inside of barrel, defeated oil pipe's the left and right sides has all run through the spout, first bracing piece has all been welded to the inside left and right sides of barrel, the one end of first bracing piece articulates there is L type dead lever, L type dead lever runs through in the spout, the bottom screwed connection of L type dead lever has first fixed block, the one end welding of first fixed block has the second fixed block, the one end that first fixed block was kept away from to the second fixed block runs through in defeated oil pipe, L type dead lever is close to the first extension spring of outside fixedly connected with of first fixed block, defeated oil pipe's inside welding has the second bracing piece, the third fixed block has all been welded to the left and right sides of second bracing piece, the bottom of third fixed block articulates there is the third bracing piece, the one end that the third bracing piece was kept away from the third fixed block articulates there is the bulge, bulge bottom fixedly connected with the piston, the left and right sides of piston.

As further preferable in the present technical solution: the top intercommunication of defeated oil pipe has the liquid outlet, the bottom intercommunication of defeated oil pipe has the inlet, the one end of liquid outlet and inlet all is equipped with the ring flange.

As further preferable in the present technical solution: the first fixed block is kept away from the one end welding of second fixed block and is had the second dead lever, the one end of second dead lever is equipped with the rubber pad.

As further preferable in the present technical solution: the bottom welding of barrel has the support frame, the bottom welding of support frame has the supporting shoe, the bottom screwed connection of supporting shoe has the base.

As further preferable in the present technical solution: and a sealing gasket is arranged at one end of the second fixing block.

As further preferable in the present technical solution: and a spring is arranged in the pressure relief groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an L type dead lever, first fixed block and second fixed block can produce the impact force to L type dead lever when the oil pressure is too big, make L type dead lever move upwards, promote first fixed block and second fixed block that L type dead lever other end is connected forward, reduce the flow of oil pipeline, thereby reach the step-down;

2. the utility model discloses a piston in the oil pipe, in the oil pumping, make the piston rebound to the pressure relief groove position to make oil flow to the liquid outlet from the pressure relief groove, make the oil pressure reduce, thereby prevent that the oil pressure from too high production blowout.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a second fixing block of the present invention;

FIG. 3 is an enlarged schematic view of the area A of FIG. 1 according to the present invention;

fig. 4 is a schematic view of the piston structure of the present invention.

In the figure, the device comprises a cylinder body 1, a first supporting rod 2, a second fixing rod 3, a supporting frame 4, a supporting block 5, a supporting block 6, a base 7, a sliding groove 8, a spring 9, a pressure relief groove 10, a second supporting rod 11, a liquid outlet 13, a piston 14, a second fixing block 15, a sealing pad 16, a first fixing block 18, a first tension spring 19, a rubber pad 20, a liquid inlet 21, a flange plate 22, an oil pipeline 23, an L type fixing rod 24, a third fixing block 25, a third supporting rod 26 and a convex block.

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.

Examples

Please refer to fig. 1-4, the utility model provides a technical scheme is that a telescopic blowout preventer of beam-pumping unit well head, including barrel 1, oil pipeline 22 has been run through to the inside of barrel 1, spout 7 has all been run through to the left and right sides of oil pipeline 22, first bracing piece 2 has all been welded to the left and right sides inside barrel 1, the one end of first bracing piece 2 articulates there is L type dead lever 23, L type dead lever 23 runs through in spout 7, the bottom screwed connection of L type dead lever 23 has first fixed block 16, the one end welding of first fixed block 16 has second fixed block 14, the one end that first fixed block 16 was kept away from to second fixed block 14 runs through in oil pipeline 22, L type dead lever 23 is close to the outside fixedly connected with first extension spring 18 of first fixed block 16, the inside welding of oil pipeline 22 has second bracing piece 10, the left and right sides of second bracing piece 10 has all welded third fixed block 24, the bottom of third fixed block 24 articulates there is third bracing piece 25, the one end that third bracing piece 25 is kept away from third fixed block 24 articulates there is protruding piece 26, protruding piece 26 bottom fixedly connected with piston 13 through promoting the well oil pressure groove 13, thereby make the oil pipeline 9 reduce the left and right sides of oil pressure discharge groove from oil pipeline 9, thereby the oil pressure discharge piston, thereby make the oil discharge piston reduce the left and right.

In this embodiment, specifically: defeated oil pipe 22's top intercommunication has liquid outlet 11, and defeated oil pipe 22's bottom intercommunication has inlet 20, and liquid outlet 11 and inlet 20's one end all is equipped with ring flange 21, through defeated oil pipe 22's top and the liquid outlet 11 and the inlet 20 of bottom intercommunication, with defeated oil pipe 22 of oil introduction, through the ring flange 21 of the one end of liquid outlet 11 and inlet 20 for fixing device.

In this embodiment, specifically: the end, far away from the second fixed block 14, of the first fixed block 16 is welded with the second fixed rod 3, one end of the second fixed rod 3 is provided with a rubber pad 19, the second fixed rod 3 is welded at one end of the first fixed block 16 and used for fixing the first fixed block 16 and the second fixed block 14, and the rubber pad 19 at one end of the second fixed rod 3 enables the second fixed rod 3 to generate buffering force between the second fixed rod 3 and the barrel 1 after the step-down is completed and is used for protecting the second fixed rod 3 and the barrel 1.

In this embodiment, specifically: the bottom welding of barrel 1 has support frame 4, and the bottom welding of support frame 4 has supporting shoe 5, and the bottom screwed connection of supporting shoe 5 has base 6, through support frame 4, supporting shoe 5 and base 6, plays the supporting role to barrel 1, makes the more stable completion work of barrel 1.

In this embodiment, specifically: one end of the second fixed block 14 is provided with a sealing gasket 15, and the sealing gasket 15 at one end of the second fixed block 14 plays a role in sealing the second fixed block 14.

In the embodiment, a spring 8 is arranged inside the pressure relief groove 9, and when the L-shaped fixing rod 23 is pushed to move upwards due to excessive oil pressure through the spring 8 inside the pressure relief groove 9, the L-shaped fixing rod 23 is buffered, so that the L-shaped fixing rod 23 is protected, and the L-shaped fixing rod 23 is prevented from being damaged.

The working principle is that when the oil pumping unit is used, oil is introduced into an oil delivery pipe 22 from a liquid inlet 20 through the oil pumping unit, when the oil pressure is too high, the impact force generated by the oil lifts one end of an L-shaped fixing rod 23 upwards, because the L-shaped fixing rod 23 is hinged with a first supporting rod 2, the other end of the L-shaped fixing rod 23 pushes a first fixing block 16 and a second fixing block 14 forwards, the flow in the oil delivery pipe 22 is reduced, and the oil pressure is reduced, after the oil touches a piston 13, because a convex block 26 above the piston 13 is hinged with a third supporting rod 25, and the third supporting rod 25 is hinged with a third fixing block 24, the oil pressure pushes the piston 13 to move upwards to the position of a pressure relief groove 9, the oil pressure is reduced by virtue of the pressure relief groove 9, finally, the oil flows to a liquid outlet 11 through the pressure relief groove 9, and after the oil pumping is finished, the L-shaped fixing rod 23 is pulled through a first tension spring 18, so that the L-shaped.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a telescopic blowout preventer of beam-pumping unit well head, includes barrel (1), its characterized in that, the inside of barrel (1) is run through and is had defeated oil pipe (22), spout (7) have all been run through to the left and right sides of defeated oil pipe (22), first bracing piece (2) have all been welded to the inside left and right sides of barrel (1), the one end of first bracing piece (2) articulates there is L type dead lever (23), L type dead lever (23) runs through in spout (7), the bottom screwed connection of L type dead lever (23) has first fixed block (16), the one end welding of first fixed block (16) has second fixed block (14), the one end that first fixed block (16) was kept away from in second fixed block (14) runs through in defeated oil pipe (22), L type dead lever (23) are close to the outside fixedly connected with first extension spring (18) of first fixed block (16), the inside welding of defeated oil pipe (22) has second bracing piece (10), the left and right sides of second bracing piece (10) all weld has third fixed block (24), the third fixed block (24) side piston (13) have all been articulated to have been connected in defeated oil pipe (13) the protruding groove (13) have been seted up to the left and right sides of the protruding piston (13).

2. The telescopic blowout preventer of a wellhead of a pumping unit according to claim 1, wherein: the top intercommunication of defeated oil pipe (22) has liquid outlet (11), the bottom intercommunication of defeated oil pipe (22) has inlet (20), the one end of liquid outlet (11) and inlet (20) all is equipped with ring flange (21).

3. The telescopic blowout preventer of a wellhead of a pumping unit according to claim 1, wherein: one end, far away from the second fixed block (14), of the first fixed block (16) is welded with a second fixed rod (3), and one end of the second fixed rod (3) is provided with a rubber pad (19).

4. The telescopic blowout preventer of a wellhead of a pumping unit according to claim 1, wherein: the bottom welding of barrel (1) has support frame (4), the bottom welding of support frame (4) has supporting shoe (5), the bottom screwed connection of supporting shoe (5) has base (6).

5. The telescopic blowout preventer of a wellhead of a pumping unit according to claim 1, wherein: and a sealing gasket (15) is arranged at one end of the second fixing block (14).

6. The telescopic blowout preventer of a wellhead of a pumping unit according to claim 1, wherein: and a spring (8) is arranged in the pressure relief groove (9).