Reciprocating electric submersible pump anti-collision device

Abstract

The utility model discloses a reciprocating electric submersible pump anti-collision device, and relates to the technical field of oil exploitation equipment. The lower portion of the middle pipe is in threaded connection with a protective cap, the lower portion of the protective cap is of a plugging structure, a pressure transmitting ring is installed between the middle pipe and the protective cap, two supporting assemblies are welded to the middle pipe, and the two supporting assemblies and the two supporting assemblies of the upper section pipe are arranged in a 90-degree crossed mode in the radial direction. The pump has the advantages that the four supporting assemblies are supported on the inner wall of the sleeve, so that the pump body is located in the center, the vertical guiding function is achieved, the whole pump body is located in the center of the sleeve, the idler wheels can elastically swing inwards and can adapt to tiny bending of the sleeve, the pressure transmitting ring is arranged, and when the inner wall of the sleeve is excessively attached to one side of the pump body, the pressure transmitting ring can transmit pressure to the pump body. The pump body can be forcibly moved back to the central position of the sleeve, meanwhile, a suction inlet in the bottom of the pump body can be protected from being blocked by impurities in the well descending process, after the pump body is installed in place, components such as the protective cap are automatically dissolved, and normal operation of the pump body is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum exploitation equipment technical field especially relates to a reciprocating type submersible electric pump anti-collision device. BACKGROUND

[0002] The reciprocating type submersible electric pump is practical pumping equipment in oil production operation, and some oil production wells are as deep as thousands of meters, since the casing is bent in the process of cementing well, the pump head at the bottom knocks the inner wall of the casing and leads to deformation and damage in the process that the reciprocating type submersible electric pump is lowered into the casing through the connecting oil pipe and reaches the bottom of the well, and the impurities in the well are also easy to accumulate in the suction inlet of the pump, which leads to that the suction valve of the suction inlet is not tightly closed and affects the normal operation of the pump. SUMMARY

[0003] In order to solve the problem that the reciprocating type submersible electric pump is easy to be damaged in the process of being lowered into the well, the utility model provides a reciprocating type submersible electric pump anti-collision device.

[0004] The utility model provides a technical scheme: a reciprocating type submersible electric pump anti-collision device, including the pump body, the lower part of pump body is connected through the pin and the upper section pipe, the lower part of upper section pipe is connected with the middle pipe through screw thread, the connecting part of upper section pipe and middle pipe is equipped with a ring groove, and the ring groove is installed with the pressure transmission ring, and the upper section pipe is welded with two circumferentially symmetrical support assemblies, and the pressure transmission ring is located in the inner side of support assembly, the pressure transmission ring is hollow structure, two symmetrical windows are opened in the support assembly part of pressure transmission ring, the window is towards the outside, the rubber plate is bonded in the window part of pressure transmission ring, and the pressure transmission ring is filled with hydraulic oil.

[0005] The lower part of middle pipe is connected with the protection cap through screw thread, the lower part of protection cap is the plugging structure, and the ring groove is arranged between the middle pipe and the protection cap, and the ring groove is installed with the pressure transmission ring, and the middle pipe is welded with two circumferentially symmetrical support assemblies, and the pressure transmission ring is located in the inner side of support assembly, and the two support assemblies and the two support assemblies of upper section pipe are arranged with 90 DEG radial intersection.

[0006] The upper section pipe, the pressure transmission ring, the middle pipe, the protection cap and the pin are made of soluble metal.

[0007] The support assembly includes the gyro wheel, the gyro wheel is rotatably connected with the left and right two side plates through the shaft A, the rear end of two side plates is connected through rear end plate A and rear end plate B, two side plates are rotatably connected with two ear plates through the shaft B, and two ear plates are welded on the upper section pipe and the middle pipe respectively, the rear end plate B is equipped with the positioning column, one end of the compression spring is sleeved on the positioning column, and the other end is abutted on the upper section pipe and the middle pipe, and the rear end plate A and the rubber plate are corresponding and have a distance from the pressure transmission ring.

[0008] The utility model discloses beneficial effect is: install support assembly in the lower part of pump body, and support assembly is divided into two layers, and every layer two symmetrical arrangement's support assembly, and two layers support assembly radial intersection 90 degree arrangement, make four support assembly support in the inner wall of sleeve, make pump body be located in the central position, also play the role of up and down guide, make the whole pump body be located in the central position of sleeve, and the elastic swing inwards of gyro wheel can adapt to the slight bending of sleeve, set up pressure ring, when the inner wall of sleeve is too close to the one side of pump body, can force pump body to move back to the central position of sleeve, can protect the suction port of pump body bottom in the process of going down the well not being blocked by impurity simultaneously, after the installation of pump body in place, the assembly such as protection cap is dissolved and falls off automatically, do not influence the normal operation of pump body. BRIEF DESCRIPTION OF DRAWINGS

[0009] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the structure schematic diagram of the utility model;

[0010] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the structure schematic diagram of the utility model; Figure 1 It is the enlarged view of A of the utility model;

[0011] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the structure schematic diagram of support assembly in the utility model;

[0012] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is the structure schematic diagram of pressure ring in the utility model;

[0013] BRIEF DESCRIPTION OF DRAWINGS Figure 5 It is the perspective drawing of the utility model.

[0014] In the drawing, 1-pump body, 2-upper section pipe, 3-pin, 4-intermediate pipe, 5-support assembly, 501-roller, 502-shaft A, 503-side plate, 504-ear plate, 505-shaft B, 506-rear end plate A, 507-rear end plate B, 508-positioning column, 6-protection cap, 7-pressure ring, 701-window, 702-rubber plate, 8-compression spring. DETAILED DESCRIPTION

[0015] As Figures 1-5 Shown, a kind of reciprocating submersible electric pump anti-collision device, including pump body 1, pump body 1 lower part is connected upper section pipe 2 by pin 3, upper section pipe 2 lower part is connected intermediate pipe 4 by screw thread, and upper section pipe 2 and intermediate pipe 4 connecting part is equipped with an annular groove, and annular groove is installed with pressure ring 7, and upper section pipe 2 is welded with two circumferentially symmetrical support assemblies 5, and support assembly 5 and upper section pipe are equipped with compression spring 8, and pressure ring 7 is located in the side of support assembly 5, and pressure ring 7 is hollow structure, and pressure ring 7 is opened with two symmetrical windows 701 in support assembly 5 part, and window 701 is towards outside, and pressure ring 7 is bonded with rubber plate 702 in window 701 part, and pressure ring 7 is filled with hydraulic oil;

[0016] The middle pipe 4 is threadedly connected with a protection cap 6 at the lower part, the lower part of the protection cap 6 is a plugging structure, an annular groove is arranged between the middle pipe 4 and the protection cap 6, a pressure transmission ring 7 is arranged in the annular groove, two circumferentially symmetrical support assemblies 5 are welded on the middle pipe 4, the pressure transmission ring 7 is located at the inner side of the support assemblies 5, and the two support assemblies 5 are arranged at a radial intersection angle of 90° with the two support assemblies 5 of the upper pipe 2.

[0017] The upper pipe 2, the pressure transmission ring 7, the middle pipe 4, the protection cap 6 and the pin 3 are made of soluble metal.

[0018] The support assembly 5 comprises a roller 501, the roller 501 is rotationally connected with left and right two side plates 503 through a shaft A 502, rear ends of the two side plates 503 are connected through a rear end plate A 506 and a rear end plate B 507, the two side plates 503 are rotationally connected with two ear plates 504 through a shaft B 505, the two ear plates 504 are welded on the upper pipe 2 and the middle pipe 4 respectively, the rear end plate B 507 is provided with a positioning column 508, one end of a compression spring 8 is sleeved on the positioning column 508 and the other end is abutted against the upper pipe 2 and the middle pipe 4, so that the roller 501 can elastically swing, the rear end plate A 506 and a rubber plate 702 are located in correspondence and have a distance from the pressure transmission ring 7, when the inner wall of the sleeve excessively adheres to one side of the pump body 1, the support assembly 5 in this direction presses the rubber plate 702 on this side, so that the liquid in the pressure transmission ring 7 flows to the window 701 on the opposite side, so that the rubber plate 702 on the opposite side expands, the roller 501 on the opposite side is supported out, and the pump body 1 returns to the central position.

[0019] The support assembly 5 is arranged at the lower part of the pump body 1, the support assembly 5 is divided into two layers, two symmetrical support assemblies 5 are arranged in each layer, and the two layers of support assemblies 5 are arranged at a radial intersection angle of 90°, so that the four support assemblies 5 support the inner wall of the sleeve, the pump body 1 is located at the central position, and the support assemblies 5 also have an upward and downward guiding effect, so that the pump body 1 is located at the central position of the sleeve as a whole, the roller 501 can elastically swing inwardly and can adapt to the slight bending of the sleeve, the pressure transmission ring 7 is arranged, when the inner wall of the sleeve excessively adheres to one side of the pump body 1, the pump body 1 can be forced to move back to the central position of the sleeve, meanwhile, the suction inlet at the bottom of the pump body 1 can be protected from being blocked by impurities during the process of lowering into the well, after the pump body is installed in place, the protection cap 6 and other components are dissolved and fall off automatically, and the normal operation of the pump body 1 is not affected.

Claims

1. A reciprocating electric submersible pump anti-collision device comprising a pump body (1), characterized in that: The lower part of the pump body (1) is connected with the upper pipe (2) through the pin (3), the lower part of the upper pipe (2) is threadedly connected with the middle pipe (4), the connecting part of the upper pipe (2) and the middle pipe (4) is provided with a ring groove, the pressure transmission ring (7) is installed in the ring groove, two circumferentially symmetrical support assemblies (5) are welded on the upper pipe (2), the compression spring (8) is arranged between the support assembly (5) and the upper pipe, the pressure transmission ring (7) is located at the inner side of the support assembly (5), the pressure transmission ring (7) is a hollow structure, two symmetrical windows (701) are formed in the support assembly (5) part of the pressure transmission ring (7), the windows (701) are outward, the rubber plate (702) is bonded on the window (701) part of the pressure transmission ring (7), the pressure transmission ring (7) is filled with hydraulic oil; The lower part of the middle pipe (4) is threadedly connected with the protection cap (6), the lower part of the protection cap (6) is a plugging structure, a ring groove is arranged between the middle pipe (4) and the protection cap (6), the pressure transmission ring (7) is installed in the ring groove, two circumferentially symmetrical support assemblies (5) are welded on the middle pipe (4), the pressure transmission ring (7) is located at the inner side of the support assembly (5), the two support assemblies (5) and the two support assemblies (5) of the upper pipe (2) are arranged in a radial intersection of 90°. The upper pipe (2), the pressure transmission ring (7), the middle pipe (4), the protection cap (6) and the pin (3) are made of soluble metal.

2. A collision prevention device for a reciprocating electric submersible pump as claimed in claim 1, characterized in that: The support assembly (5) comprises a roller (501), the roller (501) is rotatably connected with left and right two side plates (503) through a shaft A (502), the rear ends of the two side plates (503) are connected through a rear end plate A (506) and a rear end plate B (507), the two side plates (503) are rotatably connected with two ear plates (504) through a shaft B (505), the two ear plates (504) are welded on the upper pipe (2) and the middle pipe (4) respectively, the rear end plate B (507) is provided with a positioning column (508), one end of the compression spring (8) is sleeved on the positioning column (508) and the other end abuts against the upper pipe (2) and the middle pipe (4), the rear end plate A (506) and the rubber plate (702) are in position correspondence and have a distance from the pressure transmission ring (7).

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