Horizontal electric submersible pump

Abstract

The utility model discloses a horizontal electric submersible pump which comprises an electric submersible pump body and an oil pipe assembly, an oil outlet structure is arranged outside the electric submersible pump body, the oil pipe assembly is detachably connected to the oil outlet structure, the oil outlet structure comprises an oil outlet pipe, one end of the oil outlet pipe is connected with a first flange plate, and threaded holes are formed in the first flange plate in an annular array mode. The oil pipe assembly comprises an oil pipe body, a second flange plate is installed on the outer edge face of one end of the oil pipe body, cavities are formed in the second flange plate in an annular array mode, and connecting bolts connected with the threaded holes in a matched mode are installed on the face, away from the first flange plate, of the second flange plate in an annular array and threaded fit mode. And an annular plate arranged in the cavity is constructed and installed on the outer edge face of a bolt body of the connecting bolt, and the side, facing the first flange plate, of the annular plate abuts against a pressure-bearing spring arranged on the outer edge face of the bolt body in a sleeving mode. The horizontal electric submersible pump is reasonable in structure, beneficial to improving the connecting and installing stability of the oil pipe and high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of submersible electric pumps, and in particular relates to a horizontal submersible electric pump. Background Art

[0002] The submersible electric pump is composed of a submersible motor, a protector, a separator or a suction port, and a submersible centrifugal pump. It is heat-resistant and corrosion-resistant. The submersible electric pump is a multi-stage centrifugal pump working underground. It is lowered into the well together with the oil pipe. The ground power supply transmits electrical energy to the underground submersible motor through a transformer, a control panel and a power cable, so that the submersible motor drives the multi-stage centrifugal pump to rotate, converts electrical energy into mechanical energy, and lifts the well fluid in the oil well to the ground.

[0003] At present, when using a submersible electric pump, the downhole oil enters the pump body from the suction port and is lifted to the ground through the centrifugal structure and the oil outlet pipe. The connection between the existing submersible electric pump and the oil outlet pipe requires the use of a flange connecting plate, which is fixed with bolts. Under long-term use, a meshing gap is prone to occur between the bolts and the connecting holes, resulting in an unstable connection between the flange plates. Therefore, there are certain shortcomings. Utility Model Content

[0004] The purpose of the utility model is to provide a horizontal submersible electric pump to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A horizontal submersible electric pump comprises a submersible electric pump body with an oil outlet structure on the outside and an oil pipe assembly detachably connected to the oil outlet structure;

[0007] The oil outlet structure includes an oil outlet pipe with a flange plate one connected at one end, and threaded holes are provided in an annular array in the flange plate one. The oil pipe assembly includes an oil pipe body with a flange plate two installed on the outer edge surface of one end, a chamber is provided in an annular array in the flange plate two, and connecting bolts adapted to be connected to the threaded holes are installed in an annular array on a surface of the flange plate two away from the flange plate one, an annular plate arranged in the chamber is installed on the outer edge surface of the bolt body of the connecting bolt, and a pressure spring sleeved on the outer edge surface of the bolt body is abutted on the side of the annular plate facing the flange plate one.

[0008] Furthermore, an annular plug plate is installed on the edge of one side of the flange plate facing the oil pipe assembly, and an annular slot adapted for plugging and installing the annular plug plate is provided on the edge of one side of the flange plate facing the flange plate.

[0009] Furthermore, a sealing ring 1 is bonded and fixed to the outer edge surface and the inner edge surface of the annular plug plate, and a sealing ring 2 is bonded and fixed to the inner edge surface and the outer edge surface of the annular slot.

[0010] Furthermore, an oil outlet nozzle is installed on the external structure of the submersible electric pump body, and the oil outlet nozzle is connected to the submersible electric pump body. The end of the oil outlet pipe away from the flange plate is connected to the oil outlet nozzle and connected to the oil outlet nozzle.

[0011] Compared with the prior art, the utility model has the following beneficial effects: thanks to the arrangement of the submersible electric pump body, the oil outlet pipe, the first flange plate, the threaded hole, the oil pipe body, the second flange plate, the chamber, the connecting bolts, the annular plate and the pressure spring, when the oil pipe assembly is installed, the second flange plate is abutted against the first flange plate, and by screwing the connecting bolts, one end of the bolt body of the connecting bolt is screwed into the threaded hole, and at the same time, the annular plate is driven to rotate and displace, thereby causing the pressure spring to be compressed and deformed, and the elastic force generated by the deformation of the pressure spring exerts a force between the bolt body of the connecting bolt and the threaded hole and the second flange plate, thereby reducing the meshing clearance between the connecting bolt and the threaded hole and the second flange plate, thereby improving the installation stability of the oil pipe assembly;

[0012] Thanks to the arrangement of the annular slot, the second sealing ring, the annular plug plate and the first sealing ring, when the flange plate one and the second flange plate are connected, the annular plug plate is plugged and installed in the annular slot, so that the first sealing ring and the second sealing ring are pressed against each other, which is beneficial to improve the connection sealing between the first flange plate and the second flange plate, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the disassembly of the submersible electric pump body and the oil pipe assembly of the utility model;

[0015] Figure 3 It is a cross-sectional view of the oil pipe assembly of the utility model;

[0016] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure in the middle.

[0017] In the figure: 1. submersible electric pump body; 2. oil outlet nozzle; 3. oil outlet pipe; 4. flange plate 1; 5. threaded hole; 6. annular plug plate; 7. sealing ring 1; 8. oil pipe assembly; 801. oil pipe body; 802. flange plate 2; 803. chamber; 804. connecting bolt; 805. annular plate; 806. pressure spring; 807. annular slot; 808. sealing ring 2. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1-Figure 4 As shown, the horizontal submersible electric pump comprises a submersible electric pump body 1 with an oil outlet structure on the outside and an oil pipe assembly 8 detachably connected to the oil outlet structure, the oil outlet structure comprising an oil outlet pipe 3 with a flange plate 4 connected at one end, threaded holes 5 are provided in an annular array in the flange plate 4, the oil pipe assembly 8 comprises an oil pipe body 801 with a flange plate 802 installed on the outer edge surface at one end, a chamber 803 is provided in an annular array in the flange plate 802, and a connecting bolt 804 adapted to be connected to the threaded hole 5 is threadedly installed in an annular array on a side of the flange plate 802 away from the flange plate 4, an annular plate 805 arranged in the chamber 803 is installed on the outer edge surface of the bolt body of the connecting bolt 804, and a pressure spring 806 sleeved on the outer edge surface of the bolt body is abutted against the side of the annular plate 805 facing the flange plate 4. The oil-electric pump body 1, the oil outlet pipe 3, the flange plate 1 4, the threaded hole 5, the oil pipe body 801, the flange plate 2 802, the chamber 803, the connecting bolt 804, the annular plate 805 and the pressure spring 806 are arranged such that when the oil pipe assembly 8 is installed, the flange plate 2 802 is abutted against the flange plate 1 4, and by twisting the connecting bolt 804, one end of the bolt body of the connecting bolt 804 is screwed into the threaded hole 5, and at the same time, the annular plate 805 is driven to rotate and displace, thereby causing the pressure spring 806 to be compressed and deformed, and the elastic force generated by the deformation of the pressure spring 806 applies a force between the bolt body of the connecting bolt 804 and the threaded hole 5 and the flange plate 2 802, thereby reducing the meshing clearance between the connecting bolt 804 and the threaded hole 5 and the flange plate 2 802, thereby improving the installation stability of the oil pipe assembly 8.

[0020] like Figure 1-Figure 4 As shown, an annular plug plate 6 is installed at the edge position of one side of the flange plate 4 facing the oil pipe assembly 8, and an annular slot 807 adapted for the annular plug plate 6 to be inserted and installed is provided at the edge position of one side of the flange plate 2 802 facing the flange plate 1 4, and a sealing ring 1 7 is bonded and fixed to the outer edge surface and the inner edge surface of the annular plug plate 6, and a sealing ring 2 808 is bonded and fixed to the inner edge surface and the outer edge surface of the annular slot 807. Thanks to the arrangement of the annular slot 807, the sealing ring 2 808, the annular plug plate 6 and the sealing ring 1 7, when the flange plate 1 4 and the flange plate 2 802 are connected, the annular plug plate 6 is plugged and installed in the annular slot 807, so that the sealing ring 1 7 and the sealing ring 2 808 are pressed against each other, which is beneficial to improving the connection sealing between the flange plate 1 4 and the flange plate 2 802, and has strong practicality.

[0021] like Figure 1 and Figure 2As shown, the external structure of the submersible electric pump body 1 is installed with an oil outlet nozzle 2, which is connected to the submersible electric pump body 1, and the end of the oil outlet pipe 3 away from the flange plate 4 is connected to the oil outlet nozzle 2 and connected to the oil outlet nozzle 2.

[0022] Working principle: When the horizontal submersible electric pump is in use, when the oil pipe assembly 8 is installed, the flange plate 2 802 is abutted against the flange plate 1 4, and by twisting the connecting bolt 804, one end of the bolt body of the connecting bolt 804 is spirally screwed into the threaded hole 5, and at the same time, the annular plate 805 is driven to rotate and displace, so that the pressure spring 806 is compressed and deformed, and the elastic force generated by the deformation of the pressure spring 806 exerts a force between the bolt body of the connecting bolt 804 and the threaded hole 5 and the flange plate 2 802, thereby reducing the meshing clearance between the connecting bolt 804 and the threaded hole 5 and the flange plate 2 802, and when the flange plate 1 4 and the flange plate 2 802 are connected, the annular plug plate 6 is plugged and installed in the annular slot 807, so that the sealing ring 1 7 and the sealing ring 2 808 are pressed against each other, which is beneficial to improving the connection sealing between the flange plate 1 4 and the flange plate 2 802. The horizontal submersible electric pump has a reasonable structure, is beneficial to improving the stability of the oil pipe connection installation, and has strong practicality.

[0023] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A horizontal submersible electric pump, comprising a submersible electric pump body (1) with an oil outlet structure on the outside and an oil pipe assembly (8) detachably connected to the oil outlet structure; Features: The oil outlet structure comprises an oil outlet pipe (3) with a flange plate (4) connected at one end, the flange plate (4) having threaded holes (5) arranged in an annular array, the oil pipe assembly (8) comprising an oil pipe body (801) with a flange plate (802) installed on the outer edge surface of one end, the flange plate (802) having chambers (803) arranged in an annular array, and a connecting bolt (804) adapted to be connected to the threaded holes (5) is installed in an annular array on a surface of the flange plate (802) away from the flange plate (4), an annular plate (805) arranged in the chamber (803) is installed on the outer edge surface of the bolt body of the connecting bolt (804), and a pressure spring (806) arranged on the outer edge surface of the bolt body is abutted against the side of the annular plate (805) facing the flange plate (4).

2. A horizontal submersible electric pump according to claim 1, characterized in that: An annular plug plate (6) is installed on the edge of one side of the flange plate (4) facing the oil pipe assembly (8), and an annular slot (807) adapted for the annular plug plate (6) to be plugged in and installed is provided on the edge of one side of the flange plate (802) facing the flange plate (4).

3. A horizontal submersible electric pump according to claim 2, characterized in that: A sealing ring 1 (7) is bonded and fixed to the outer edge surface and the inner edge surface of the annular plug plate (6), and a sealing ring 2 (808) is bonded and fixed to the inner edge surface and the outer edge surface of the annular slot (807).

4. A horizontal submersible electric pump according to claim 1, characterized in that: The outer structure of the submersible electric pump body (1) is equipped with an oil outlet nozzle (2), and the oil outlet nozzle (2) is connected to the submersible electric pump body (1). The end of the oil outlet pipe (3) away from the flange plate (4) is connected to the oil outlet nozzle (2) and is connected to the oil outlet nozzle (2).

Images