阅读说明：本技术 一种热变套环打压式管锚 (Heat-variable lantern ring pressing type pipe anchor ) 是由 薛燕芬 于 2020-07-06 设计创作，主要内容包括：本发明涉及管道锚定器技术领域,具体为一种热变套环打压式管锚,其能够有效解决油管受热伸长的问题,且不会对对油管的流量造成负面影响,其创新性地利用磁性环的居里点来实现对密封套的自动控制,使得密封套在高于居里点的温度下能够移动来消除油管伸长的影响,在低于居里点的温度下自动复位并固定,具有实用意义和推广价值,预期能够产生良好的经济效益包括管体、设于管体两端的接头、密封套、磁性环、限位机构和复位弹簧,管体上设有设有卡瓦坐封活塞套、卡瓦坐封活塞、锥体和卡瓦。(The invention relates to the technical field of pipeline anchors, in particular to a heat-variable lantern ring pressing type pipe anchor which can effectively solve the problem of thermal extension of an oil pipe and cannot cause negative influence on the flow of the oil pipe.)

1. The utility model provides a heat change lantern ring formula pipe anchor of suppressing, includes body (1) and locates joint (11) at body (1) both ends, be equipped with on body (1) and be equipped with slips setting piston cover (12), slips setting piston (13), cone (14) and slips (15), slip setting piston (13) in the slip setting piston cover (12) of suppressing can promote cone (14) and get into slips (15) inboard along body (1), make radial expansion, its characterized in that of body (1) can be followed in slips (15):

the pipe body (1) is disconnected along the middle part, and an annular clamping block (16) is arranged at the edge of the disconnected part of the pipe body (1);

the device also comprises a sealing sleeve (2), a magnetic ring (3), a limiting mechanism and a return spring (5);

openings are formed in the two ends of the sealing sleeve (2), the openings and the tube body (1) form a sliding pair, and the annular clamping block (16) is located in the sealing sleeve (2) and forms a sliding pair with the inner wall of the sealing sleeve;

the magnetic ring (3) is arranged at the disconnected position of the pipe body (1), and a limiting hole (17) is formed in the surface of the pipe body (1) at the installation position of the magnetic ring (3);

the limiting device comprises a limiting spring (41) and a limiting block (42), a plurality of blind holes (21) are formed in two ends of the sealing sleeve (2), the limiting block (42) and the blind holes (21) form a moving pair, two ends of the limiting spring (41) are respectively connected with the blind holes (21) and the limiting block (42), and the limiting block (42) is clamped in the limiting hole (17) under the attraction of the magnetic ring (3);

reset spring (5) are located respectively seal cover (2) both sides, reset spring (5) one end with seal cover (2) link to each other, reset spring (5) other end with body (1) links to each other.

2. A heat variable collar swaged tube anchor according to claim 1 wherein: the number and the positions of the limiting holes (17) correspond to those of the blind holes (21).

3. A heat variable collar swaged tube anchor according to claim 1 wherein: the joint (11) is connected with the pipe body (1) through threaded connection.

4. A heat variable collar swaged tube anchor according to claim 1 wherein: the annular fixture block (16) and the pipe body (1) are of an integrated structure.

5. A heat variable collar swaged tube anchor according to claim 1 wherein: and a sealing ring (22) is also arranged between the annular clamping block (16) and the sealing sleeve (2).

6. The heat variable collar swaged tube anchor of claim 5, wherein: the sealing ring (22) is hollow.

7. A heat variable collar swaged tube anchor according to claim 1 wherein: the magnetic ring (3) is embedded in the surface of the pipe body (1).

8. A heat variable collar swaged tube anchor according to claim 1 wherein: the reset spring (5) is sleeved on the pipe body (1).

Technical Field

The invention relates to the technical field of pipeline anchors, in particular to a heat-variable lantern ring pressing type pipe anchor.

Background

In the oil well operation process, under the influence of factors such as working fluid level decline, the pump hanging degree of depth is too dark, hot washing, the problem that the stress state worsens can appear in oil pipe, lead to oil pipe flexible, rotate, play scheduling problem from top to bottom, this problem is solved to the oil pipe anchor (also called pipe anchor) of using at present often, it can be fixed oil pipe at the oil pumping in-process, reduce the stroke loss, improve the pump efficiency, in addition can also reduce oil pipe's fatigue damage, improve oil pipe's life and bearing capacity.

When the thermal recovery process is used, the underground temperature can rise, so that the pipe body of the oil pipe is subjected to thermal expansion to cause the problem of pipe body extension, and the problem of oil pipe bending can occur because the anchoring point position of the oil pipe anchor and the well wall is fixed, so that the oil pipe has a serious eccentric wear problem, the pump efficiency is reduced, the service life of the oil pipe is also shortened, and the production efficiency is not improved.

Disclosure of Invention

The invention aims to provide a heat-variable lantern ring pressing type pipe anchor to solve the problem that the existing pipe anchor is insufficient due to the fact that an oil pipe extends under heat in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme that the slip setting device comprises a pipe body, joints arranged at two ends of the pipe body, a sealing sleeve, a magnetic ring, a limiting mechanism and a return spring, wherein the pipe body is provided with a slip setting piston sleeve, a slip setting piston, a cone and slips, the slip setting piston in the slip setting piston sleeve is pressed to push the cone to enter the inner side of the slip along the pipe body, so that the slips can be radially expanded along the pipe body, the pipe body is disconnected along the middle part, the edge of the disconnected part of the pipe body is provided with an annular clamping block, two ends of the sealing sleeve are provided with openings, the openings and the pipe body form a moving pair, the annular clamping block is positioned in the sealing sleeve to form a moving pair with the inner wall of the sealing sleeve, the magnetic ring is arranged at the disconnected part of the pipe body, the surface of the, the sealing sleeve is characterized in that a plurality of blind holes are formed in two ends of the sealing sleeve, the limiting block and the blind holes form a sliding pair, two ends of the limiting spring are respectively connected with the blind holes and the limiting block, the limiting block is clamped in the limiting holes under the attraction of the magnetic rings, the reset springs are respectively arranged on two sides of the sealing sleeve, one end of each reset spring is connected with the sealing sleeve, and the other end of each reset spring is connected with the tube body.

Preferably, the number and the positions of the limiting holes correspond to those of the blind holes.

Preferably, the connector is connected to the pipe body by a threaded connection.

Preferably, the annular fixture block and the pipe body are of an integrated structure.

Preferably, a sealing ring is further arranged between the annular clamping block and the sealing sleeve.

Preferably, the sealing ring is hollow.

Preferably, the magnetic ring is embedded in the surface of the pipe body.

Preferably, the return spring is sleeved on the pipe body.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

according to the heat-variable lantern ring pressing type pipe anchor provided by the invention, when the temperature of the working environment does not reach the Curie point, the magnetic ring attracts the limiting block, the limiting spring connected with the limiting block is stretched at the moment, the limiting block is clamped in the limiting hole, and the position of the sealing sleeve and the position of the pipe body are fixed.

When the working environment temperature reaches the Curie point, the magnetism of the magnetic ring disappears rapidly, the limiting spring connected with the limiting block recovers at the moment, the shape of the limiting spring recovers to enable the limiting block to be separated from the limiting hole, the sealing sleeve can move along the length direction of the pipe body at the moment, the annular clamping block moves along the inner wall of the sealing sleeve after the pipe body is heated and extended, so that the influence of the extension of the pipe body is eliminated, and the reset springs at the two ends of the sealing sleeve can be compressed and extended respectively at the moment; when the operating environment temperature drops below the Curie point, the magnetism of the magnetic ring recovers, the pipe body recovers the initial length, the reset spring resets and compels the sealing sleeve to return to the initial position, the magnetic ring attracts the limiting block to enable the limiting block to be clamped into the limiting block, and the sealing sleeve is fixed with the pipe body at the moment.

The invention can effectively solve the problem of the thermal extension of the oil pipe, does not cause negative influence on the flow of the oil pipe, innovatively utilizes the Curie point of the magnetic ring to realize the automatic control of the sealing sleeve, enables the sealing sleeve to move at the temperature higher than the Curie point to eliminate the influence of the extension of the oil pipe, automatically resets and fixes at the temperature lower than the Curie point, has practical significance and popularization value, and can be expected to generate good economic benefit.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the novel cross-sectional configuration of the present invention;

FIG. 2 is a schematic (partial) cross-sectional configuration of the novel invention;

in the figure: the slip setting device comprises a pipe body 1, a connector 11, a slip setting piston sleeve 12, a slip setting piston 13, a cone 14, a slip 15, an annular fixture block 16, a limiting hole 17, a sealing sleeve 2, a blind hole 21, a sealing ring 22, a magnetic ring 3, a limiting spring 41, a limiting block 42 and a return spring 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.