CN214576870U

CN214576870U - Oil wellhead sealing device with good sealing effect

Info

Publication number: CN214576870U
Application number: CN202120932502.3U
Authority: CN
Inventors: 侯军; 杨小栋; 张俊明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-11-02
Anticipated expiration: 2031-04-30

Abstract

The utility model belongs to the technical field of the well head is sealed, especially, be a sealed effectual petroleum well head sealing device, including the well head, the inside of well head is provided with external pipe, external pipe's one end fixedly connected with inscription pipe, one side fixedly connected with sealing device of well head, sealing device is including sealed frame, the one end fixedly connected with controller of sealed frame, the inside fixedly connected with pneumatic cylinder of sealed frame, the one end fixedly connected with telescopic link of pneumatic cylinder. Through setting up sealing device, first sealed piece laminating is taken over outward, when taking over outward and being taken out from, and first sealed piece relies on the spring can slide by oneself and seals up taking over inward, can prevent that inner joint pipe and outer taking over drop and make crude oil leak, is provided with magnet on the first sealed piece, makes sealed effect better, when the external pipe of needs is taken over, can rely on the controller to withdraw first sealed piece to telescopic link control, the operation of being convenient for.

Description

Oil wellhead sealing device with good sealing effect

Technical Field

The utility model belongs to the technical field of well head is sealed, specifically be a sealed effectual oil well head sealing device.

Background

The oil extraction engineering is a general term for various engineering technical measures taken on an oil reservoir through a production well and an injection well according to development targets in the oil field exploitation process, is used as a comprehensive application subject, and researches theories, engineering design methods and implementation technologies of the engineering technical measures which can economically and effectively act on the oil reservoir to improve the yield of the oil well and the recovery ratio of crude oil.

In an oil extraction field, an external connecting pipe of an oil pumping unit moves in a shaft positioned at a wellhead, the external connecting pipe can break and lose the effect due to the uncertainty of the working environment and the uncertainty of the stress state of the external connecting pipe in the working process, the external connecting pipe breaks and loses effect once broken, the oil at the wellhead leaks to pollute the environment, even serious blowout accidents can occur, certain potential safety hazards exist, and the wellhead cannot be sealed timely.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a sealed effectual oil well head sealing device possesses in time sealedly, and is sealed effectual, adapts to the advantage of different well heads, has solved and can not in time seal, and sealed effect is not good, can not adapt to the problem of various well heads.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: an oil wellhead sealing device with good sealing effect comprises a wellhead, wherein an external connecting pipe is arranged inside the wellhead, an internal connecting pipe is fixedly connected with one end of the external connecting pipe, a sealing device is fixedly connected with one side of the wellhead, the sealing device comprises a sealing frame, one end of the sealing frame is fixedly connected with a controller, a hydraulic cylinder is fixedly connected inside the sealing frame, one end of the hydraulic cylinder is fixedly connected with a telescopic rod, one end of the telescopic rod is fixedly connected with a connecting plate, a second sliding groove is formed in the inner side wall of the sealing frame, the connecting plate is in sliding connection with the second sliding groove, a stop block is fixedly connected to the surface of the second sliding groove, a spring is fixedly connected to one side of the connecting plate, one end of the spring is fixedly connected with a first sealing block, one end of the first sealing block is fixedly connected with a magnet, and a first sliding groove is formed in the upper surface of the sealing device, a sliding block is movably connected in the first sliding groove.

Preferably, the upper surface of the sliding block is fixedly connected with an L-shaped plate, and the L-shaped plate is fixedly connected with the end cover in a sealing manner through a fastening bolt.

Through adopting above-mentioned scheme, at the fixed surface of slider and connect the L template, the L template can follow the slider and slide in first spout, adaptable different well heads for it is convenient to seal.

Preferably, the surface of the magnet is wrapped with a sealing gasket.

Through adopting above-mentioned scheme, at the surface parcel of magnet sealed the pad, sealed the pad friction that is used for reducing the magnet, the leakproofness is better simultaneously.

Preferably, the end cap seal includes the handle, the lower fixed surface of handle is connected with the threaded rod, threaded rod and sealed lid threaded connection, the one end and the sealed piece fixed connection of second of threaded rod.

Through adopting above-mentioned scheme, set up end cover seal in well head department, take out when external pipe and seal the end cover as to well head department once more and seal the well head and prevent leaking.

Preferably, the surface of the second sealing block is wrapped with a sealing layer.

By adopting the scheme, the sealing layer is arranged on the surface of the second sealing block, so that the sealing performance can be enhanced and the friction and corrosion of the second sealing block can be reduced.

Preferably, the surface of the sealing cover is provided with a first bolt hole.

Through adopting above-mentioned scheme, offer first bolt hole on the sealing cover for with sealing device fixed connection.

Preferably, the surface of the L-shaped plate is provided with a second bolt hole.

Through adopting above-mentioned scheme for through fastening bolt and end cover sealing fixed connection.

(III) advantageous effects

Compared with the prior art, the utility model provides a sealed effectual oil well head sealing device possesses following beneficial effect:

1. this sealed effectual oil well head sealing device, through setting up sealing device, first sealed piece laminating is taken over outside, when taking over outside, first sealed piece relies on the spring can slide by oneself and seals the internal takeover, can prevent that the internal takeover drops with external takeover and makes crude oil leakage, be provided with magnet on the first sealed piece, it is better to make sealed effect, when the external takeover of needs, can rely on the controller to withdraw first sealed piece to telescopic link control, the operation of being convenient for.

2. This sealed effectual oil well head sealing device through setting up end cover seal, when sealing device is sealed the back reuse end cover seal to the well head secondary seal of taking over, the sealing device surface sets up slider and L template and is used for being connected end cover seal, makes sealed more firm, and the L template can slide in first spout, and is adaptable to sealed in the not unidimensional well head, easy to assemble and operation.

Drawings

Fig. 1 is a schematic view of a front view cross-sectional structure of the present invention;

fig. 2 is a schematic structural view of the sealing device of the present invention;

fig. 3 is a schematic view of the end cap sealing structure of the present invention;

fig. 4 is a schematic structural view of a top view of the end cap seal according to the present invention;

fig. 5 is a schematic structural view of an L-shaped plate in the present invention;

fig. 6 is a schematic diagram of a top view of the L-shaped board of the present invention.

In the figure: 1. a wellhead; 2. an external connection pipe; 3. an inner connecting pipe; 4. a sealing device; 401. a sealing frame; 402. a second chute; 403. a spring; 404. a telescopic rod; 405. a hydraulic cylinder; 406. a controller; 407. a connecting plate; 408. a stopper; 409. a first seal block; 410. a magnet; 411. a gasket; 5. a first chute; 6. a slider; 7. sealing the end cover; 701. a handle; 702. a threaded rod; 703. a sealing cover; 704. a second seal block; 705. a sealing layer; 706. a first bolt hole; 8. fastening a bolt; 9. an L-shaped plate; 10. a second bolt hole.

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.

Example one

An oil wellhead sealing device with good sealing effect comprises a wellhead 1, wherein an external connecting pipe 2 is arranged inside the wellhead 1, an internal connecting pipe 3 is fixedly connected with one end of the external connecting pipe 2, a sealing device 4 is fixedly connected with one side of the wellhead 1, the sealing device 4 comprises a sealing frame 401, one end of the sealing frame 401 is fixedly connected with a controller 406, a hydraulic cylinder 405 is fixedly connected inside the sealing frame 401, one end of the hydraulic cylinder 405 is fixedly connected with a telescopic rod 404, one end of the telescopic rod 404 is fixedly connected with a connecting plate 407, a second sliding groove 402 is formed in the inner side wall of the sealing frame 401, the connecting plate 407 is in sliding connection with the second sliding groove 402, a stop 408 is fixedly connected to the surface of the second sliding groove 402, a spring 403 is fixedly connected to one side of the connecting plate 407, and one end of the spring 403 is fixedly connected with a first sealing block 409, one end of the first sealing block 409 is fixedly connected with a magnet 410, the upper surface of the sealing device 4 is provided with a first sliding groove 5, and a sliding block 6 is movably connected in the first sliding groove 5.

The upper surface of slider 6 is fixedly connected with L template 9, L template 9 passes through fastening bolt 8 and end cover seal 7 fixed connection, the surface parcel of magnet 410 has sealed the pad 411.

Referring to fig. 1-6, when the apparatus is used to seal a well head, the sealing device 4 is fixed on the well head, and when the extension pipe 2 is pulled away or accidentally breaks off, the first sealing block 409 may be at the spring 403. Under the effect of (3) seal the interior takeover by oneself, first sealed block 409 surface is provided with magnet 410 and can makes the 4 leakproofness of both ends sealing device better, when needs are taken over 2 access outward, can rely on controller 406 to control the drive first sealed block 409 of pneumatic cylinder 405 and contract, when taking over normal during operation outward, resume first sealed block 409 so that it is sealed by oneself next time, high durability and convenient operation, the leakproofness is better, can make unexpected reduction take place, it is used for driving the L template to set up slider 6 on sealing device 4's surface, sealing device 4 adaptable not equidimension well head like this, convenient to detach installs and uses, reduce extravagantly.

Example two

And the end cover seal is added on the basis of the first embodiment.

The end cover seal 7 comprises a handle 701, a threaded rod 702 is fixedly connected to the lower surface of the handle 701, the threaded rod 702 is in threaded connection with a seal cover 703, one end of the threaded rod 702 is fixedly connected with a second seal block 704, a seal layer 705 wraps the surface of the second seal block 704, a first bolt hole 706 is formed in the surface of the seal cover 703, and a second bolt hole 10 is formed in the surface of the L-shaped plate 9.

Referring to fig. 1-6, when the sealing device 4 starts to work, an end cover seal 7 is added at a wellhead, a handle 701 drives a threaded rod 702 to drive a second sealing block 704 to move to seal the wellhead, a sealing layer 705 is arranged on the surface of the second sealing block 704 to enable the sealing effect to be better and reduce friction and damage of the second sealing block 704, after sealing is finished, an L-shaped plate is moved to a proper position to enable a fastening bolt 8 to be fixed again through a proper first bolt hole 706 and a proper second bolt hole 10, so that the end cover seal 7 and the sealing device 4 are completely fixed, and the sealing performance is better.

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 sealed effectual oil well head sealing device, includes well head (1), its characterized in that: the improved well head comprises a well head (1), wherein an outer connecting pipe (2) is arranged inside the well head (1), one end of the outer connecting pipe (2) is fixedly connected with an inner connecting pipe (3), one side of the well head (1) is fixedly connected with a sealing device (4), the sealing device (4) comprises a sealing frame (401), one end of the sealing frame (401) is fixedly connected with a controller (406), a hydraulic cylinder (405) is fixedly connected inside the sealing frame (401), one end of the hydraulic cylinder (405) is fixedly connected with a telescopic rod (404), one end of the telescopic rod (404) is fixedly connected with a connecting plate (407), a second sliding groove (402) is formed in the inner side wall of the sealing frame (401), the connecting plate (407) is in sliding connection with the second sliding groove (402), a stop block (408) is fixedly connected to the surface of the second sliding groove (402), and a spring (403) is fixedly connected to one side of the connecting plate (407), one end and the first sealed piece (409) fixed connection of spring (403), the one end fixedly connected with magnet (410) of first sealed piece (409), first spout (5) have been seted up to the upper surface of sealing device (4), swing joint has slider (6) in first spout (5).

2. A good sealing petroleum wellhead sealing device as claimed in claim 1 wherein: the upper surface of the sliding block (6) is fixedly connected with an L-shaped plate (9), and the L-shaped plate (9) is fixedly connected with the end cover seal (7) through a fastening bolt (8).

3. A good sealing petroleum wellhead sealing device as claimed in claim 1 wherein: the surface of the magnet (410) is wrapped with a sealing gasket (411).

4. A good sealing petroleum wellhead sealing device as claimed in claim 2 wherein: the end cover seal (7) comprises a handle (701), a threaded rod (702) is fixedly connected to the lower surface of the handle (701), the threaded rod (702) is in threaded connection with the seal cover (703), and one end of the threaded rod (702) is fixedly connected with the second seal block (704).

5. A good sealing petroleum wellhead sealing device as claimed in claim 4 wherein: the surface of the second sealing block (704) is wrapped with a sealing layer (705).

6. A good sealing petroleum wellhead sealing device as claimed in claim 4 wherein: a first bolt hole (706) is formed in the surface of the sealing cover (703).

7. A good sealing petroleum wellhead sealing device as claimed in claim 2 wherein: and a second bolt hole (10) is formed in the surface of the L-shaped plate (9).