CN221144787U - Improved deep well pump - Google Patents
Improved deep well pump Download PDFInfo
- Publication number
- CN221144787U CN221144787U CN202322904409.3U CN202322904409U CN221144787U CN 221144787 U CN221144787 U CN 221144787U CN 202322904409 U CN202322904409 U CN 202322904409U CN 221144787 U CN221144787 U CN 221144787U
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- China
- Prior art keywords
- shaft body
- oil duct
- oil
- journal
- well pump
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Links
- 239000012528 membrane Substances 0.000 claims description 20
- 230000000694 effects Effects 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an improved deep well pump, which structurally comprises a machine barrel and a motor shaft body arranged in the machine barrel, and is characterized in that: the motor shaft body comprises a shaft body, a first shaft neck is arranged at the bottom end of the shaft body, a first oil duct is arranged in the first shaft neck, the input end of the first oil duct is connected to the lower surface of the first shaft neck in a conducting manner, the output end of the first oil duct is connected with a second oil duct in a conducting manner, the second oil duct is positioned at the top end side of the shaft body, and two ends of the second oil duct are respectively connected to the outer walls of two sides of the shaft body in a conducting manner; in the axial direction of the shaft body, the rotor and the stator at the outer periphery of the shaft body are located between the first journal and the second oil passage. The heat conduction oil circularly flows between the first oil duct, the second oil duct and the gaps between the stator and the rotor through the pressure effect, so that the heat dissipation of the stator and the rotor is realized, and the heat is prevented from being accumulated between the stator and the rotor to damage the motor.
Description
Technical Field
The utility model relates to the technical field of deep-well pumps, in particular to a deep-well pump improved aiming at a motor.
Background
The motor shaft is an important part in the motor, and is used as a tie for converting electromechanical energy between the motor and the equipment, and for supporting rotating parts, transmitting torque and determining the relative position of the rotating parts to a stator. When the deep-well pump motor works, a large amount of working heat is inevitably generated between a stator and a rotor of the motor, and the heat needs to be conducted out, so that if heat aggregation occurs, the motor is extremely easy to damage. Because the internal structure of motor is limited, the motor external environment is difficult to realize the deep cooling to the inside of motor, if the motor is in the operating condition of high temperature for a long time, then easily cause stator and rotor's stability and life decline. Under the prior art, heat conduction oil is generally injected into the motor so as to conduct out the heat generated in the motor. However, under the existing conditions, the fluidity of the heat conduction oil in the motor is poor, and the heat conduction effect of the motor cannot be ensured.
Disclosure of utility model
It is an object of the present utility model to provide an improved deep well pump which solves the above mentioned problems of the prior art.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an improved generation deep-well pump, includes the barrel and locates the motor shaft body in the barrel, its characterized in that: the motor shaft body comprises a shaft body, a first shaft neck is arranged at the bottom end of the shaft body, a first oil duct is arranged in the first shaft neck, the input end of the first oil duct is connected to the lower surface of the first shaft neck in a conducting manner, the output end of the first oil duct is connected with a second oil duct in a conducting manner, the second oil duct is positioned at the top end side of the shaft body, and two ends of the second oil duct are respectively connected to the outer walls of two sides of the shaft body in a conducting manner; in the axial direction of the shaft body, the rotor and the stator at the outer periphery of the shaft body are located between the first journal and the second oil passage.
Preferably, the first oil passage is located at an axial position of the shaft body, and the second oil passage is located in a radial direction of the shaft body.
Preferably, a mounting frame is arranged in the bottom end of the machine barrel, and the lower surface of the mounting frame is fixedly connected with an oil cylinder; a third oil duct is arranged in the mounting frame and is connected in the oil cylinder and the machine barrel in a conducting way, and a film type pressure balancing piece is arranged in the oil cylinder.
Preferably, the membrane pressure balance piece is opened towards the outer side, a pressing piece is arranged in the opening end of the membrane pressure balance piece, a clamping spring is arranged at the bottom end of the pressing piece and is clamped in the oil cylinder, an air hole is formed in the pressing piece, and the air hole is connected in the membrane pressure balance piece in a conducting mode.
Preferably, a first over-travel groove is formed at the joint of the shaft body and the first shaft neck.
Preferably, a second journal is arranged at the top end of the shaft body, and bearings are arranged on the first journal and the second journal.
Preferably, the top end of the second journal is provided with a third journal.
Preferably, a second over-travel groove is formed at the joint of the second journal and the third journal.
The improved deep well pump provided by the utility model has the advantages that: according to the utility model, the first oil passage penetrating through the bottom of the shaft body is additionally arranged on the axis of the shaft body, the second oil passage penetrating through the side wall of the shaft body is additionally arranged at the output end of the first oil passage, two ends of the second oil passage are communicated and connected to the outer walls of two sides of the shaft body, when the motor shaft rotates, negative pressure is formed at two ends of the second oil passage due to the action of centrifugal force, so that heat conduction oil in the oil cylinder can be promoted to enter the second oil passage through the first oil passage and be thrown out from the second oil passage, and as the motor shaft continuously rotates, the heat conduction oil can continuously enter the upper sides of the stator and the rotor, the oil pressure of the heat conduction oil at the upper sides of the stator and the rotor is increased, the oil pressure is promoted to downwards flow from a gap between the stator and the rotor and return to the cylinder, and therefore, a high-efficiency circulating oil passage is formed, and heat between the stator and the rotor is outwards conveyed, so that heat is prevented from being accumulated between the stator and the rotor to cause damage to the motor.
Drawings
FIG. 1 is a schematic view of a motor shaft in a deep well pump in a longitudinal section;
FIG. 2 is a schematic diagram of the overall front cut-away structure of the deep well pump;
Fig. 3 is an enlarged view of the structure of the region a in fig. 2.
In the figure: 1. a motor shaft body; 11. a shaft body; 12. a first journal; 13. a second journal; 14. a third journal; 15. screw holes; 16. a first oil passage; 17. a second oil passage; 18. a first over-travel slot; 19. a second over-travel slot; 2. a mounting frame; 21. a bearing; 22. a third oil passage; 23. an oil cylinder; 24. a membrane pressure balance; 25. pressing and fixing pieces; 26. clamping springs; 27. air holes; 3. a rotor; 31. a stator; 32. a barrel.
Detailed Description
Referring to fig. 1-3, the construction of the present improved deep-well pump includes a cylindrical barrel 32, the barrel 32 being generally of stainless steel. A motor shaft body 1 is coaxially provided in the cylinder 32, and the motor shaft body 1 protrudes outside the cylinder 32.
The motor shaft body 1 comprises a shaft body 11, and a first shaft neck 12 is arranged at the bottom end of the shaft body 11. A first oil duct 16 is formed in the first journal 12, an input end of the first oil duct 16 is connected to the lower surface of the first journal 12 in a conducting manner, and an output end of the first oil duct 16 is connected to a second oil duct 17 in a conducting manner. The second oil duct 17 is located at the upper end side of the motor shaft body 1, and two ends of the second oil duct 17 are respectively connected to two outer walls of the shaft body 11 in a conducting manner. In the axial direction of the axial direction 11,
A mounting frame 2 is arranged in the bottom end of the machine barrel 32, the mounting frame 2 is plugged into the machine barrel 32, and the first shaft neck 12 is rotatably plugged into the mounting frame 2. The lower surface of the mounting frame 2 is fixedly connected with an oil cylinder 23, and the oil cylinder 23 is fixedly connected to the bottom end of the machine barrel 32. The membrane type pressure balance piece 24 is clamped in the oil cylinder 23, the membrane type pressure balance piece 24 is opened towards the outer side, the press fitting piece 25 is arranged in the opening end of the membrane type pressure balance piece 24, the press fitting piece 25 is of a bowl-shaped structure, and the press fitting piece 25 realizes sealing fixation between the wall body of the membrane type pressure balance piece 24 and the inner wall surface of the oil cylinder 23. The bottom end of the pressing piece 25 is provided with a clamping spring 26, the clamping spring 26 is clamped in the oil cylinder 23, and the clamping spring 26 realizes axial positioning of the pressing piece 25 in the oil cylinder 23. An air hole 27 is formed in the bottom of the pressing piece 25, the air hole 27 is connected in a conducting mode in the membrane type pressure balance piece 24, and the air hole 27 is communicated with the outside. A third oil duct 22 is arranged in the mounting frame 2, the third oil duct 22 is used for communicating the oil cylinder 23 and the machine barrel 32, and the air hole 27 is used for entering and exiting air or water in a water source area. The oil cylinder 23 is used for storing heat conduction oil, the membrane type pressure balance piece 24 adopts a rubber material thin wall structure, the closed end of the membrane type pressure balance piece 24 extends into the oil cylinder 23, and the membrane type pressure balance piece 24 balances the internal and external pressure of the machine barrel 32 through the deformation of the wall body.
A first over-travel groove 18 is formed at the joint of the shaft body 11 and the first shaft neck 12, and the first over-travel groove 18 facilitates tool withdrawal during processing. The top end of the shaft body 11 is provided with a second journal 13, and the first journal 12 and the second journal 13 are both provided with bearings 21, and the heat conduction oil also provides lubrication for the bearings 21. The top end of the second journal 13 is provided with a third journal 14, the third journal 14 being used for mounting the housing seal and the coupling. The second journal 13 and the third journal 14 are provided with a second over-travel groove 19 at the joint, and the second over-travel groove 19 facilitates tool withdrawal during processing. The upper surface of the third journal 14 is provided with a screw hole 15, and the screw hole 15 is used for installing a screw so as to realize the connection and fixation of the water pump impeller. The first oil passage 16 and the screw hole 15 are both located at the axial position of the shaft body 11, and the second oil passage 17 is located in the radial direction of the shaft body 11.
The rotor 3 is fixedly connected to the shaft body 11, the stator 31 is sleeved on the periphery of the rotor 3 in a clearance mode, and the stator 31 is fixedly connected to the inner wall surface of the machine barrel 32. After the motor is energized, the stator 31 applies torque to the rotor 3 for driving the shaft 11 to rotate, thereby powering the impeller of the water pump. In the axial direction of the shaft body 11, the stator 31 and the rotor 17 are located between the first journal 12 and the second oil passage 17. The first, second and third oil passages 16, 17 and 22 and the gap between the stator 31 and the rotor 3 mainly constitute an oil passage for the heat transfer oil.
Working principle: when the utility model is used, when the motor shaft body 1 rotates, negative pressure is generated at the outlet end of the second oil duct 17 under the action of centrifugal force, the negative pressure can promote heat conduction oil to be sucked to the upper side of the stator 31 through the first oil duct 16 and the second oil duct 17, and after the heat conduction oil is thrown out by the motor shaft body 1, the heat conduction oil pressure at the upper side of the stator 31 in the machine barrel 32 is relatively higher, so that the heat conduction oil can be promoted to enter the mounting frame 2 from a gap between the stator 31 and the rotor 3 and enter the oil cylinder 23 through the third oil duct 22, thereby realizing heat dissipation between the stator 31 and the rotor 3 of the motor, and avoiding damage to the motor caused by heat accumulation between the stator 31 and the rotor 3. When the internal pressure of the motor is high, the wall of the membrane type pressure balance member 24 is extruded by the heat conducting oil to shrink, and the gas or water in the membrane type pressure balance member 24 is discharged from the air hole 27. Conversely, water or gas enters the membrane pressure balance member 24 from the air hole 27, and the membrane pressure balance member 24 swells, which reduces the volume in the oil cylinder 23 to accommodate the low pressure state of the heat transfer oil. For the structure of the motor, the shaft body 11 is arranged at the axial position of the rotor 3, the first shaft neck 12 and the second shaft neck 13 are both used for installing the bearing 21, the third shaft neck 14 is used for installing a shell sealing element and a coupling, the screw hole 15 is used for installing a screw, the first overtravel groove 18 and the second overtravel groove 19 are used for withdrawing a tool when being conveniently processed, and the clamping spring 26 and the pressing piece 25 are matched for fixing the film type pressure balance piece 24 on the oil cylinder 23.
Claims (8)
1. An improved deep well pump, includes barrel (32) and locates motor shaft body (1) in barrel (32), its characterized in that: the motor shaft body (1) comprises a shaft body (11), a first shaft neck (12) is arranged at the bottom end of the shaft body (11), a first oil duct (16) is arranged in the first shaft neck (12), the input end of the first oil duct (16) is connected to the lower surface of the first shaft neck (12) in a conducting mode, the output end of the first oil duct (16) is connected to a second oil duct (17) in a conducting mode, the second oil duct (17) is located at the top end side of the shaft body (11), and two ends of the second oil duct (17) are connected to the outer walls of two sides of the shaft body (11) in a conducting mode respectively; in the axial direction of the shaft body (11), a rotor (3) and a stator (31) on the outer periphery of the shaft body (11) are located between the first journal (12) and the second oil passage (17).
2. The improved deep-well pump of claim 1, wherein: the first oil passage (16) is located at the axial position of the shaft body (11), and the second oil passage (17) is located in the radial direction of the shaft body (11).
3. The improved deep-well pump of claim 1, wherein: a mounting frame (2) is arranged in the bottom end of the machine barrel (32), and the lower surface of the mounting frame (2) is fixedly connected with an oil cylinder (23); a third oil duct (22) is arranged in the mounting frame (2), the third oil duct (22) is connected in a conducting manner in the oil cylinder (23) and the machine barrel (32), and a membrane type pressure balancing piece (24) is arranged in the oil cylinder (23).
4. The improved deep-well pump of claim 3, wherein: the membrane type pressure balance piece (24) is opened towards the outer side, a pressing piece (25) is arranged in the opening end of the membrane type pressure balance piece (24), a clamp spring (26) is arranged at the bottom end of the pressing piece (25), the clamp spring (26) is clamped in the oil cylinder (23), an air hole (27) is formed in the pressing piece (25), and the air hole (27) is connected in the membrane type pressure balance piece (24) in a conducting mode.
5. The improved deep-well pump of claim 1, wherein: a first over-travel groove (18) is formed at the joint of the shaft body (11) and the first shaft neck (12).
6. The improved deep-well pump of claim 5, wherein: the top of the shaft body (11) is provided with a second journal (13), and bearings (21) are arranged on the first journal (12) and the second journal (13).
7. The improved deep-well pump of claim 6, wherein: the top end of the second journal (13) is provided with a third journal (14).
8. The improved deep-well pump of claim 6, wherein: a second over-travel groove (19) is formed at the joint of the second journal (13) and the third journal (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322904409.3U CN221144787U (en) | 2023-10-30 | 2023-10-30 | Improved deep well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322904409.3U CN221144787U (en) | 2023-10-30 | 2023-10-30 | Improved deep well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221144787U true CN221144787U (en) | 2024-06-14 |
Family
ID=91383934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322904409.3U Active CN221144787U (en) | 2023-10-30 | 2023-10-30 | Improved deep well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221144787U (en) |
-
2023
- 2023-10-30 CN CN202322904409.3U patent/CN221144787U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |