CN218347562U

CN218347562U - Y-shaped joint for oil extraction of electric submersible pump

Info

Publication number: CN218347562U
Application number: CN202221784671.8U
Authority: CN
Inventors: 张英豪; 吴俊安; 陈欣欣
Original assignee: Tianjin Keruitewei Technology Development Co ltd; Tianjin Yuanhai Oil Extraction Science & Technology Co ltd
Current assignee: Tianjin Keruitewei Technology Development Co ltd; Tianjin Yuanhai Oil Extraction Science & Technology Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-01-20
Anticipated expiration: 2032-07-12

Abstract

The utility model relates to an electric submersible pump oil recovery Y type connects, connect the body including the Y type, the side pipeline that the Y type connects the body is connected with the piston tube socket, the Y type connects and is equipped with the wane formula converter valve between this internal side pipeline of body and the trunk line, it is equipped with bullet head piston pipe to slide on the piston tube socket inner wall, the wane formula converter valve passes through bullet head piston pipe drive rotation and realizes opening and close to side pipeline and trunk line, it is equipped with sealing bush to keep away from Y type joint body pot head in the piston tube socket, be equipped with seal assembly one between sealing bush and the piston tube socket, piston tube socket tail end is equipped with the lock mother that prevents sealing bush and bullet head piston pipe and drop, bullet head piston tube outer wall cover is equipped with elasticity reset spring, be equipped with the seal assembly two that prevents elasticity reset spring feed liquor corruption between bullet head piston pipe and the piston tube socket. The utility model discloses need not to drop into again and salvage stopper during the use, just steerable double pump or multilayer in turn produce oil in the pit, improve the productivity and reduce the fault rate.

Description

Y-shaped joint for oil extraction of electric submersible pump

Technical Field

The utility model relates to an oil gas well is two oil pipe electric submersible pump technical field that converges in pit especially relates to an electric submersible pump oil recovery Y type connects.

Background

At present, more and more oil wells are produced by using electric submersible pumps, and the existing pump bodies make underground testing tools difficult to pass under the conventional conditions, so that the production profile information of a production layer below the electric pumps cannot be obtained, and the early conventional Y-shaped joint is developed.

The conventional converter valve used in the Y-shaped joint has two sealing modes, one is a spherical rolling mode for sealing an oil pipe, and the other is a pull force sealing mode by a movable valve and a balancing weight. However, the two seals are suitable for oil wells with small well deviation and almost vertical wells, and once the oil wells with large deviation or horizontal wells are met, the direction of the counterweight of the ball or the valve is changed, the sealing positioning is difficult to control, and the failure condition is easy to occur. And when the ball type rolling sealing mode is used, a stopper is required to be put into the electric submersible pump to prevent backflow to the overflowing channel during operation, the stopper is required to be captured and taken out during logging, the operation process is troublesome, and the failure rate is high.

Disclosure of Invention

The utility model aims at solving the defects of the prior art and providing an electric submersible pump oil extraction Y-shaped joint.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides an electric submersible pump oil recovery Y type connects, including the Y type connects the body, the side pipeline connection of Y type joint body has the piston tube socket, be equipped with the wane formula converter valve between the side pipeline in the Y type joint body and the trunk line, it is equipped with bullet piston tube to slide on the piston tube socket inner wall, wane formula converter valve passes through bullet piston tube drive rotation and realizes opening and close to side pipeline and trunk line, it is equipped with the sealing bush to keep away from Y type joint body pot head cover in the piston tube socket, be equipped with sealing assembly one between sealing bush and the piston tube socket, piston tube socket tail end is equipped with the lock mother that stops sealing bush and bullet piston tube and drop, bullet piston tube tail end cover is established in the sealing bush, and bullet piston tube outer wall is equipped with the fender ring, bullet piston tube outer wall cover is equipped with elasticity reset spring, be equipped with the second sealing assembly who prevents elasticity reset spring feed liquor corruption between bullet piston tube and the piston tube socket, elasticity reset spring and sealing bush are located fender ring both sides, the bullet piston tube is close to wane formula converter valve one end and is equipped with the flowing liquid mouth.

Particularly, the inner wall of the piston tube seat is provided with a stepped groove, and the locking nut is in threaded connection with the inner wall of the large-diameter part of the groove.

Particularly, the sealing bush is arranged on the inner wall of the small-diameter part of the groove, the first sealing assembly comprises two groups of first clamping grooves, the two groups of first clamping grooves are arranged on the inner wall of the groove, the two groups of first clamping grooves are located at two ends of the sealing bush, and the first clamping grooves are internally sleeved with the first sealing rings.

Particularly, the elastic reset spring is positioned in the groove, the sealing assembly II comprises a group of clamping grooves II, the clamping grooves II are formed in the inner wall of the piston tube seat and close to one end of the elastic reset spring, and the clamping grooves II are internally sleeved with sealing rings II.

The rocker type converter valve comprises a converter valve shaft, a tension reset spring, a rocker, a valve body I and a valve body II, wherein the valve body I and the valve body II are respectively installed on two plates of the rocker, a first included angle and a second included angle of the valve body are right angles, the rocker is installed at the corner of a side pipeline and a main pipeline through rotation of the converter valve shaft, the tension reset spring is installed on the converter valve shaft, the valve body I and the valve body II reset through the tension reset spring after rotation, the side pipeline is opened and closed through the valve body I, and the main pipeline is opened and closed through the valve body II.

The utility model has the advantages that: the utility model has the advantages that by arranging the piston tube seat, the bullet piston tube, the seesaw type converter valve, the sealing bush, the elastic reset spring, the first sealing assembly, the second sealing assembly and the locking nut, when the electric submersible pump works to generate flow, the flow pushes the bullet piston tube to move, the first valve body is pushed open, the second valve body falls down to block the downstream of the main pipeline, the bullet piston tube is pushed continuously to expose the liquid flow port, and the produced liquid flows into the main pipeline through the liquid flow port; when the electric submersible pump of the side pipeline stops working, the bullet piston pipe is reset backwards, the first valve body is reset under the action of the tension reset spring and seals the side pipeline, and the main pipeline is opened; the underground double-pump or multi-layer alternative oil production can be controlled without throwing and salvaging the stopper, the productivity is improved, and the failure rate is reduced; and the inclination of the oil well is not feared in the sealing of main pipeline and side pipeline, convenient to use, and the setting of sealing component one and sealing component two improves water-proof effects simultaneously, has improved the security of elasticity reset spring activity cavity, avoids elasticity reset spring feed liquor to corrode.

Drawings

FIG. 1 is a schematic view of the side duct of the present invention in a closed state;

FIG. 2 is an enlarged view of the point A in FIG. 1;

FIG. 3 is an enlarged view of B in FIG. 1;

FIG. 4 is an enlarged view of the point C in FIG. 1;

FIG. 5 is a schematic view of the side duct of the present invention in an open state;

in the figure: 1-Y-shaped connector body; 11-a side pipeline; 12-a main pipeline;

2-a piston tube seat; 21-bullet piston tube; 22-a sealing bush; 23-a locking nut; 24-a baffle ring; 25-elastic force return spring; 26-a liquid flow port; 27-a groove;

3-a seesaw type converter valve; 31-a converter valve shaft; 32-a tension return spring; 33-rocker; 34-a valve body I; 35-valve body two;

4-sealing the first component; 41-a first card slot; 42-sealing ring one;

5-sealing component II; 51-card slot two; 52-sealing ring two;

the following detailed description will be made with reference to the accompanying drawings in conjunction with embodiments of the present invention.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1-5, a Y-shaped joint for electric submersible pump oil production comprises a Y-shaped joint body 1,Y, a side pipeline 11 of the Y-shaped joint body 1 is connected with a piston tube seat 2,Y, a wane type converter valve 3 is arranged between the side pipeline 11 and a main pipeline 12 in the Y-shaped joint body 1, a bullet piston tube 21 is arranged on the inner wall of the piston tube seat 2 in a sliding mode, and the wane type converter valve 3 is driven to rotate through the bullet piston tube 21 and realizes opening and closing of the side pipeline 11 and the main pipeline 12;

one end, far away from the Y-shaped connector body 1, in the piston tube seat 2 is sleeved with a sealing bush 22, a sealing assembly I4 is arranged between the sealing bush 22 and the piston tube seat 2, the tail end of the piston tube seat 2 is provided with a locking nut 23 for preventing the sealing bush 22 and the bullet piston tube 21 from falling off, the inner wall of the piston tube seat 2 is provided with a stepped groove 27, the locking nut 23 is in threaded connection with the inner wall of the large-diameter part of the groove 27, the sealing bush 22 is arranged on the inner wall of the small-diameter part of the groove 27, the sealing assembly I4 comprises two groups of clamping grooves I41, the two groups of clamping grooves I41 are arranged on the inner wall of the groove 27, the two groups of clamping grooves I41 are positioned at two ends of the sealing bush 22, and a sealing ring I42 is sleeved in the clamping grooves I41;

the tail end of the bullet piston tube 21 is sleeved in the sealing bushing 22, a baffle ring 24 is arranged on the outer wall of the bullet piston tube 21, an elastic return spring 25 is sleeved on the outer wall of the bullet piston tube 21, a second sealing assembly 5 for preventing the elastic return spring 25 from liquid inlet corrosion is arranged between the bullet piston tube 21 and the piston tube seat 2, and the elastic return spring 25 and the sealing bushing 22 are located on two sides of the baffle ring 24; the elastic reset spring 25 is positioned in the groove 27, the second sealing assembly 5 comprises a second clamping groove 51, the second clamping groove 51 is arranged at one end, close to the elastic reset spring 25, of the inner wall of the piston tube seat 2, and a second sealing ring 52 is sleeved in the second clamping groove 51;

the bullet piston tube 21 is provided with a liquid flowing port 26 close to one end of the wane type converter valve 3, the wane type converter valve 3 comprises a converter valve shaft 31, a tension reset spring 32, a wane 33, a first valve body 34 and a second valve body 35, the first valve body 34 and the second valve body 35 are respectively installed on two plates of the wane 33, an included angle between the first valve body 34 and the second valve body 35 is a right angle, the wane 33 is rotatably installed at the corner of the side pipeline 11 and the main pipeline 12 through the converter valve shaft 31, the tension reset spring 32 is installed on the converter valve shaft 31, the first valve body 34 and the second valve body 35 reset through the tension reset spring 32 after rotating, the side pipeline 11 is opened and closed through the first valve body 34, and the main pipeline 12 is opened and closed through the second valve body 35; when the rocker type converter valve 3 does not work at ordinary times, the connecting part of the rocker type converter valve 3 is supported by the tension reset spring 32, the side pipeline 11 is always closed, the main pipeline 11 (overflowing channel) is in a completely unblocked state, the lower layer is not influenced to pump liquid and a test tool string upwards, and meanwhile, under the tension action of the tension reset spring 32, the rocker type converter valve 3 seals the side pipeline 11 in any direction and any angle in a posture.

When the electric submersible pump works, the flowing liquid from the pump generates pressure on the pipeline to push the bullet piston pipe 21 to move towards the first valve body 34, and when the valve is completely opened, the second valve body 35 on the other side is pushed by the action of the wane 33 to fall down and seal the downstream of the main pipeline 12, so that the lower layer is prevented from flowing in, the leakage is reduced, and the productivity and efficiency are improved. When the bullet piston tube 5 reaches the top under the thrust of the pump, the liquid flowing port 26 on the side starts to drain liquid into the main tube 11 towards the inner cavity of the Y-shaped joint.

When the electric submersible pump of the side pipeline 11 stops working, the bullet piston pipe 21 is pushed backwards to reset by the tension of the elastic reset spring 25 under the condition that the bullet piston pipe 21 has no thrust, and the valve body I34 seals the side pipeline 11 under the action of the tension reset spring 32 to prevent the flowing liquid from leaking when other oil layers of the main pipeline 11 pump liquid. The bullet piston tube 5 and the piston tube seat 2 are sealed in a waterproof mode through a second sealing ring 52, liquid inlet corrosion of the elastic return spring 25 is prevented, the sealing bush 22 is additionally arranged at the tail part, meanwhile, the first sealing ring 42 is sealed in a waterproof mode, safety of a movable cavity of the elastic return spring 25 is improved, the tail part is locked through the lock nut 23, and the sealing bush 22 and the bullet piston tube 21 are prevented from falling off beyond the position.

When the utility model works, when the electric submersible pump of the side pipeline 11 works to generate flow, the flow pushes the bullet piston tube 21 to move towards the first valve body 34, the first valve body 34 is pushed open, the second valve body 35 falls to block the downstream of the main pipeline 12, and the produced liquid flows into the main pipeline 11 through the liquid flow port 27; when the electric submersible pump of the side pipeline 11 stops working, the bullet piston pipe 21 is reset backwards, the valve body I34 is reset under the action of the tension reset spring 32 and seals the side pipeline 11, and the main pipeline 12 is opened; the underground double-pump or multi-layer alternative oil production can be controlled without throwing and salvaging the stopper, the productivity is improved, and the failure rate is reduced; and the gradient of the sealed oil well that does not fear of trunk line 12 and side pipeline 11, convenient to use, sealing assembly 4 and sealing assembly two 5's setting improve water-proof effects simultaneously, have improved the security of elasticity reset spring 25 activity cavity, avoid elasticity reset spring 25 feed liquor to corrode.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. A Y-shaped joint for oil extraction of an electric submersible pump comprises a Y-shaped joint body (1) and is characterized in that a piston tube seat (2) is connected to a side pipeline (11) of the Y-shaped joint body (1), a wane type converter valve (3) is arranged between the side pipeline (11) and a main pipeline (12) in the Y-shaped joint body (1), a bullet piston tube (21) is arranged on the inner wall of the piston tube seat (2) in a sliding mode, the wane type converter valve (3) is driven to rotate through the bullet piston tube (21) and achieves opening and closing of the side pipeline (11) and the main pipeline (12), a sealing bushing (22) is sleeved at one end, far away from the Y-shaped joint body (1), in the piston tube seat (2), a sealing assembly I (4) is arranged between the sealing bushing (22) and the piston tube seat (2), a locking nut (23) for preventing the sealing bushing (22) and the bullet piston tube (21) from falling off is arranged at the tail end of the piston tube seat (2), a bullet piston tube (21) is sleeved in the sealing bushing (22), an elastic spring assembly (25) is arranged between the outer wall of the bullet piston tube (21), and a spring return spring (25) for preventing the piston tube (21) from corroding, the elastic force return spring (25) and the sealing bush (22) are positioned at two sides of the baffle ring (24), and one end of the bullet piston tube (21) close to the seesaw type converter valve (3) is provided with a liquid flowing port (26).

2. An electric submersible pump oil production Y-joint as claimed in claim 1, characterized in that the piston tube holder (2) is provided with a stepped recess (27) on the inner wall, and the locking nut (23) is screwed on the inner wall of the large diameter portion of the recess (27).

3. The Y-shaped joint for oil extraction of the electric submersible pump as defined in claim 2, wherein the sealing bush (22) is arranged on the inner wall of the small-diameter part of the groove (27), the first sealing assembly (4) comprises two groups of first clamping grooves (41), the two groups of first clamping grooves (41) are arranged on the inner wall of the groove (27), the two groups of first clamping grooves (41) are arranged at two ends of the sealing bush (22), and the first clamping grooves (41) are internally sleeved with the first sealing rings (42).

4. The Y-shaped joint for oil extraction of the electric submersible pump according to claim 3, wherein the elastic return spring (25) is positioned in the groove (27), the second sealing component (5) comprises a set of second clamping grooves (51), the second clamping grooves (51) are formed in one end, close to the elastic return spring (25), of the inner wall of the piston tube seat (2), and the second sealing rings (52) are sleeved in the second clamping grooves (51).

5. The Y-shaped connector for electric submersible pump oil extraction according to claim 4, characterized in that the rocker type converter valve (3) comprises a converter valve shaft (31), a tension return spring (32), a rocker (33), a first valve body (34) and a second valve body (35), wherein the first valve body (34) and the second valve body (35) are respectively installed on two plates of the rocker (33), an included angle between the first valve body (34) and the second valve body (35) is a right angle, the rocker (33) is rotatably installed at the corners of the side pipeline (11) and the main pipeline (12) through the converter valve shaft (31), the tension return spring (32) is installed on the converter valve shaft (31), the first valve body (34) and the second valve body (35) are reset through the tension return spring (32) after rotation, the pipeline (11) is opened and closed through the first valve body (34), and the main pipeline (12) is opened and closed through the second valve body (35).