CN219081865U

CN219081865U - Submersible electric pump for oil-filled well

Info

Publication number: CN219081865U
Application number: CN202223399637.1U
Authority: CN
Inventors: 王家成; 魏超; 王兆爽
Original assignee: Haicheng Suprasuny Pump Co ltd
Current assignee: Haicheng Suprasuny Pump Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-26
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses an oil-filled well submersible electric pump, which relates to the technical field of water pumps and comprises a pump body, a motor and a connecting assembly of the pump body and the motor, wherein the motor comprises an upper end cover made of thick cast iron, a first bearing, a third screw, a stator part, a stator cylinder made of thick cast iron, a rotor part, a second bearing, a fourth screw, a lower end cover made of thick cast iron, a gland made of thick cast iron and a pressure regulating bag; according to the utility model, the oil-filled structure is adopted in the submersible pump for the well, so that the heat conduction is good when the submersible pump for the well works, the lubricating effect is good, the purposes of cooling and radiating effects are achieved, and the service life of the bearing is prolonged.

Description

Submersible electric pump for oil-filled well

Technical Field

The utility model relates to the technical field of water pumps, in particular to a submersible electric pump for an oil-filled well.

Background

In order to respond to the call of national energy conservation and emission reduction, the research on the submersible pump is also progressing orderly. The well submerged motor pump that obtains current market through market research is mostly cast iron segmental structure pump head and matches filling type iron sheet section of thick bamboo motor, because in the aforesaid structure well submerged motor pump adopted is the bath formula, it has poor, the problem of lubrication effect in the motor, it is relatively poor to cause cooling radiating effect, bearing class part wearing and tearing consumption in the motor is unprotected, short in service life, iron sheet section of thick bamboo motor has easy rust to death and locked the commentaries on classics, corrosion-resistant, quality problems such as collision-resistant, thereby shorten product life weak point, therefore an oil-filled type well cast iron submerged motor pump is waiting to develop urgently.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the submersible pump for the oil-filled well, which adopts an oil-filled structure in the submersible pump for the well, ensures good heat conduction during the operation of the submersible pump for the well, has good lubrication effect, achieves the purposes of good cooling and heat dissipation effects and prolonging the service life of a bearing, and adopts a cast iron shell structure with thicker structure, so that the motor is more corrosion-resistant and high in strength, and is more stable during use, thereby prolonging the service life.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the submersible electric pump for the oil-filled well comprises a pump body, a motor and a connecting assembly of the pump body and the motor, wherein the motor comprises an upper end cover made of thick cast iron, a first bearing, a third screw, a stator part, a stator cylinder made of thick cast iron, a rotor part, a second bearing, a fourth screw, a lower end cover made of thick cast iron, a gland made of thick cast iron and a pressure regulating bag; the submersible electric pump for the oil-filled well further comprises a second sealing ring and a third sealing ring, the second sealing ring seals the joint of the upper end cover and the stator cylinder, the third sealing ring seals the joint of the lower end cover and the stator cylinder, and the upper end cover, the lower end cover and the rotor component are in sealing connection with the upper end cover and the lower end cover, so that an oil cavity is formed in the motor.

Preferably, the pump body comprises a rubber bearing, a guide shell, a taper sleeve, an impeller, a bolt, a pump shaft and a coupling frame, wherein the rubber bearing is pressed into an inner hole of the guide shell, the pump shaft is inserted into the rubber bearing and the impeller in a penetrating manner, the impeller is fixedly connected with the pump shaft through the taper sleeve, and the coupling frame is fixedly connected with the guide shell through the bolt.

Preferably, a first sealing ring is arranged at the joint of the connecting frame and the diversion shell.

Preferably, the connecting assembly of the pump body and the motor comprises a first screw, a first key, a second key, a coupler and a second screw, the coupler of the pump body is fixed with the upper end cover of the motor through the second screw, the shaft of the rotor component is connected with the pump shaft through the coupler and is fixed through the first screw, and the first key and the second key are respectively inserted into key grooves of the coupler.

Preferably, the position of the coupler corresponding to the first screw is sleeved with a check ring.

The utility model provides a submersible electric pump for an oil-filled well, which has the following beneficial effects:

1. according to the utility model, the oil-filled structure is adopted in the submersible pump for the well, so that the heat conduction is good when the submersible pump for the well works, the lubricating effect is good, the purposes of cooling and radiating effects are achieved, and the service life of the bearing is prolonged.

2. In the utility model, the second sealing ring and the third sealing ring are adopted to increase the tightness in the motor and prevent oil leakage; the pump body is connected with the motor through the coupler, the first key and the second key, so that the pump body and the motor are better in connection tightness and more stable in connection; the baffle ring is sleeved at the first screw position of the coupler to prevent the first screw from loosening.

Drawings

FIG. 1 is a schematic diagram of a motor portion of an electric submersible pump for an oil-filled well according to the present utility model.

FIG. 2 is a schematic diagram of a pump body portion of an electric submersible pump for an oil-filled well according to the present utility model.

FIG. 3 is a schematic diagram of the entire pump body of an electric submersible pump for an oil-filled well according to the present utility model.

In the figure: 1. a pump body; 2. a first screw; 3. a first bond; 4. a second bond; 5. a coupling; 6. a retainer ring; 7. a second screw; 8. a motor; 101. a rubber bearing; 102. a diversion shell; 103. a taper sleeve; 104. an impeller; 105. a bolt; 106. a first seal ring; 107. a pump shaft; 108. a connecting frame; 801. an upper end cap; 802. a first bearing; 803. a second seal ring; 804. a third screw; 805. a stator component; 806. a stator cylinder; 807. a rotor component; 808. a second bearing; 809. a third seal ring; 810. a fourth screw; 811. a lower end cap; 812. a gland; 813. pressure regulating bag.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-3, an oil-filled submersible pump for a well comprises a pump body 1, a motor 8 and a connecting assembly of the pump body 1 and the motor 8, wherein the motor 8 comprises an upper end cover 801 made of thick cast iron, a first bearing 802, a third screw 804, a stator part 805, a stator cylinder 806 made of thick cast iron, a rotor part 807, a second bearing 808, a fourth screw 810, a lower end cover 811 made of thick cast iron, a gland 812 made of thick cast iron and a pressure regulating capsule 813, the stator part 805 is pressed into the stator cylinder 806 in an interference fit manner, the upper end and the lower end of the rotor part 807 are respectively inserted into the first bearing 802 and the second bearing 808 in a penetrating manner, the first bearing 802 and the inner ring of the second bearing 808 are respectively inserted into a middle cavity of the stator part 805, the upper end cover 801 is connected with the upper end of the rotor part 807 through the first bearing 802, the outer ring end surface is fixedly connected with the stator cylinder through the third screw 804, the lower end cover 811 is connected with the lower end of the rotor part 807 through the second bearing 808, the upper end cover is pressed into the lower end cover 806 through the pressure regulating capsule 813, the upper end of the first bearing is respectively inserted into the first bearing 802 and the pressure regulating capsule hole is arranged in the pressure regulating capsule hole through the pressure regulating capsule 812; the oil-filled well submersible pump further comprises a second sealing ring 803 and a third sealing ring 809, wherein the second sealing ring 803 seals the joint between the upper end cover 801 and the stator cylinder 806, the third sealing ring 809 seals the joint between the lower end cover 811 and the stator cylinder 806, and the sealing connection between the upper end cover 801, the lower end cover 811 and the upper end and lower end of the rotor member 807 and the upper end cover 801 and the lower end cover 811 form an oil cavity in the motor 8; the pump body 1 comprises a rubber bearing 101, a guide shell 102, a taper sleeve 103, an impeller 104, a bolt 105, a pump shaft 107 and a coupling frame 108, wherein the rubber bearing 101 is pressed into an inner hole of the guide shell 102, the pump shaft 107 is inserted into the rubber bearing 101 and the impeller 104 in a penetrating manner, the impeller 104 and the pump shaft 107 are fixedly connected through the taper sleeve 103, and the coupling frame 108 is fixedly connected with the guide shell 102 through the bolt 105; a first sealing ring 106 is arranged at the joint of the connecting frame 108 and the diversion shell 102; the connecting assembly of the pump body 1 and the motor 8 comprises a first screw 2, a first key 3, a second key 4, a coupler 5 and a second screw 7, wherein a link frame 108 of the pump body 1 and an upper end cover 801 of the motor 8 are fixed through the second screw 7, a shaft of a rotor component 807 is connected with a pump shaft 107 through the coupler 5 and is fixed through the first screw 2, and the first key 3 and the second key 4 are respectively inserted into key grooves of the coupler 5; the position of the coupler 5 corresponding to the first screw 2 is sleeved with a check ring 6.

The detailed connection means are known in the art, and the following mainly introduces the working principle and process, specifically as follows:

as shown in fig. 1-3, in the utility model, a pump body 1 and a motor 8 are connected through a connecting assembly, a stator component 805 is installed in a stator cylinder 806 of the motor 8 in an interference manner, the upper end of the stator cylinder 806 is fixedly connected with an upper end cover 801 through a third screw 804, the connecting part is in sealing connection with a lower end cover 811 through a fourth screw 810, the lower end of the stator cylinder 806 is fixedly connected with a lower end cover 811 through a third seal ring 809, and the upper end and the lower end of a rotor component 807 are respectively connected with the upper end cover 801 and the lower end cover 811 through a first bearing 802 and a second bearing 808, so that a sealed oil cavity is formed in the motor 8 by the stator cylinder 806, the upper end cover 801, the lower end cover 811 and the rotor component 807, food-grade white mineral oil is filled in the oil cavity, the rotor component 807 penetrates through a middle cavity of the stator component 805, and can rotate in the middle cavity. Compared with the existing flushing type structure, the oil-filled motor 8 enables the rotor component 807 to rotate more smoothly, the bearing type part has better use effect and longer service life, and the heat conduction of oil is more direct, so that the heat dissipation and cooling effects of the motor 8 are better. The stator cylinder 806, the upper end cover 801, the lower end cover 811 and the gland 812 all adopt thicker cast iron structures, and compared with the existing iron sheet motor 8, the utility model ensures that the motor 8 is more corrosion-resistant and high in strength, and is more stable in use, thereby prolonging the service life. Pressure regulating bladder 813 is mounted in the inner hole of lower end cap 811 through gland 812 for oil cavity pressure regulation.

In one possible implementation manner, the pump body 1 comprises a rubber bearing 101, a guide shell 102, a taper sleeve 103, an impeller 104, a bolt 105, a pump shaft 107 and a coupling frame 108, wherein the rubber bearing 101 is pressed into an inner hole of the guide shell 102, the pump shaft 107 is inserted into the rubber bearing 101 and the impeller 104 in a penetrating manner, the impeller 104 is fixedly connected with the pump shaft 107 through the taper sleeve 103, the taper sleeve 103 is installed in an interference fit manner, and the coupling frame 108 is fixedly connected with the guide shell 102 through the bolt 105.

The first sealing ring 106 is arranged at the connection position of the connecting frame 108 and the guide shell 102, so that the tightness of the connection position of the connecting frame 108 and the guide shell 102 is improved, the sealing of the seam allowance of the guide shell 102 is closed, no leakage is caused, and the efficient operation of the electric pump is ensured.

In one possible implementation manner, the connection assembly of the pump body 1 and the motor 8 comprises a first screw 2, a first key 3, a second key 4, a coupler 5 and a second screw 7, the link 108 of the pump body 1 and the upper end cover 801 of the motor 8 are fixed through the second screw 7, the shaft of the rotor component 807 is connected with the pump shaft 107 through the coupler 5 and fixed through the first screw 2, and the first key 3 and the second key 4 are respectively inserted into key grooves of the coupler 5. The pump body 1 is connected with the motor 8 through the coupler 5, the first key 3 and the second key 4, so that the connection tightness between the pump body 1 and the motor 8 is better.

Wherein, the position of shaft coupling 5 corresponding to first screw 2 overlaps and is equipped with retaining ring 6, prevents first screw 2 lax.

Submersible electrical principle for oil-filled wells: the submerged electric pump for the well is placed in normal-temperature clean water, and the electric pump is fully submerged in the water; the stator member 805 is energized with three-phase alternating current to generate electromagnetic force to drive the rotor member 807 to rotate, and the rotor member 807 is supported by the first bearing 802 and the second bearing 808 to rotate smoothly; the shaft of the rotor component 807 drives the shaft coupling 5 and the pump shaft 107 connected with the connector to rotate, the pump shaft 107 rotates to drive the taper sleeve 103 and the impeller 104 to rotate, the impeller 104 rotates to throw out water into the diversion shell 102, and the water obtains energy under the rotation action of the impeller 104 to generate pressure and flow, so that electric energy is converted into water pump flow and lift. The rubber bearing 101 can support the pump shaft 107 for high-speed stable rotation.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The submersible electric pump for the oil-filled well is characterized by comprising a pump body (1), a motor (8) and a connecting assembly of the pump body (1) and the motor (8), wherein the motor (8) comprises an upper end cover (801) made of thick cast iron, a first bearing (802), a third screw (804), a stator part (805), a stator cylinder (806) made of thick cast iron, a rotor part (807), a second bearing (808), a fourth screw (810), a lower end cover (811) made of thick cast iron, a gland (812) made of thick cast iron and a pressure regulating capsule (813), the stator part (805) is pressed into a stator cylinder (806) in an interference fit manner, the upper end and the lower end of the rotor part (807) are respectively inserted into the first bearing (802) and the second bearing (808) in a penetrating manner, the first bearing (802) and the second bearing (808) are in an interference fit manner, the rotor part (807) is inserted into a middle cavity of the stator part (805) in a penetrating manner and can rotate in the middle cavity, the upper end cover (801) is connected with the upper end surface of the rotor part (807) through the first bearing (802) and the upper end surface of the rotor part (806) through the second bearing (808) in a penetrating manner, and the upper end of the lower end of the rotor part (808) is fixedly connected with the lower end of the rotor part (807) through the rotor part (808) through the lower end cover (808) is connected with the lower end of the stator part (808) through the lower end cover (808) respectively, the end face of the outer ring is fixedly connected with the stator cylinder (806) through a fourth screw (810), the pressure regulating bag (813) is arranged in the inner hole of the lower end cover (811), the inner hole is blocked through the gland (812), and the edge of the pressure regulating bag (813) is supported; the submersible electric pump for the oil-filled well further comprises a second sealing ring (803) and a third sealing ring (809), the second sealing ring (803) seals the joint of the upper end cover (801) and the stator cylinder (806), the third sealing ring (809) seals the joint of the lower end cover (811) and the stator cylinder (806), and the upper end cover (806), the upper end cover (801), the lower end cover (811) and the upper end and lower end of the rotor component (807) are in sealing connection with the upper end cover (801) and the lower end cover (811) so that an oil cavity is formed in the motor (8).

2. The submersible electric pump for oil-filled wells according to claim 1, wherein the pump body (1) comprises a rubber bearing (101), a guide shell (102), a taper sleeve (103), an impeller (104), a bolt (105), a pump shaft (107) and a coupling frame (108), the rubber bearing (101) is pressed into an inner hole of the guide shell (102), the pump shaft (107) is inserted into the rubber bearing (101) and the impeller (104) in a penetrating manner, the impeller (104) is fixedly connected with the pump shaft (107) through the taper sleeve (103), and the coupling frame (108) is fixedly connected with the guide shell (102) through the bolt (105).

3. The submersible electric pump for oil-filled wells according to claim 2, wherein a first sealing ring (106) is provided at the connection of the coupling frame (108) and the diversion shell (102).

4. The submersible electric pump for oil-filled wells according to claim 2, wherein the connection assembly of the pump body (1) and the motor (8) comprises a first screw (2), a first key (3), a second key (4), a coupler (5) and a second screw (7), wherein a bracket (108) of the pump body (1) is fixed with an upper end cover (801) of the motor (8) through the second screw (7), a shaft of the rotor component (807) is connected with a pump shaft (107) through the coupler (5) and is fixed through the first screw (2), and the first key (3) and the second key (4) are respectively inserted into key grooves of the coupler (5).

5. The submersible electric pump for oil-filled wells according to claim 4, wherein the coupling (5) is provided with a retainer ring (6) corresponding to the position of the first screw (2).