Integrated pump gate with high-efficiency heat dissipation motor

Abstract

This utility model discloses an integrated pump gate with a high-efficiency heat dissipation motor. The pump gate includes a pool body and an intermediate gate. A submersible motor is installed in a horizontally arranged guide tube at the bottom of the gate. The pump gate includes a first and a third radiator located at both ends of the stator winding, and a diverter and a second radiator located to the left of the first radiator. The first and third radiators are used to generate axial airflow from the motor inlet to the outlet. The diverter is used to guide the axial airflow in a circumferential direction. The second radiator is a centrifugal impeller used to increase the gas pressure and drive circulation. This system can actively and efficiently remove the heat generated by the main heat sources inside the motor (stator winding, rotor core and end coils), significantly reducing the motor temperature rise, thereby solving the overheating problem of the submersible motor in the integrated pump gate and greatly improving the reliability and service life of the equipment.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering technology, specifically, it relates to an integrated pump gate with a high-efficiency heat dissipation motor. Background Technology

[0002] Integrated pump-gate systems combine gates, pumps, flap gates, hoists, and control systems into one unit, used for flood control, drainage, and water exchange. High-flow-rate pumps are horizontally installed on the gates. Because the pump motors are typically powerful, they generate significant heat, impacting heat dissipation and deteriorating the operating environment, thus compromising the long-term efficient operation of the pump-gate system. Due to their compact structure, integrated functions, and space-saving design, integrated pump-gate systems are widely used in river replenishment, regional water transfer, and flood control and drainage. Their core power component is a submersible motor, which is usually horizontally installed on the gate and operates under a closed, high-load environment for extended periods.

[0003] Currently, traditional submersible motors primarily rely on heat conduction between the motor casing and the surrounding water for heat dissipation. However, for high-power motors integrated into pump gates, the stator windings, rotor core, and end coils generate a significant amount of heat during operation. This passive cooling method has limited efficiency and easily leads to heat accumulation inside the motor, resulting in excessively high temperatures. Excessively high operating temperatures accelerate the aging of the motor's insulation materials, reduce motor efficiency, shorten its lifespan, and may even cause malfunctions and shutdowns, severely impacting the operational reliability and safety of integrated pump gates. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated pump gate with a high-efficiency heat dissipation motor, thereby reducing the operating temperature of the motor and improving the reliability of the equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an integrated pump gate with a high-efficiency heat dissipation motor, including a pool body and an intermediate gate set in the pool body. A guide cylinder is horizontally set at the bottom of the intermediate gate. A submersible motor is coaxially fixed inside the guide cylinder. The submersible motor includes a stator winding and a rotor inside it. A first radiator, a second radiator and a third radiator are set on the rotor. The first radiator and the third radiator are respectively fixed on the rotor at both ends of the stator winding, and are used to generate axial airflow from the inlet end A to the outlet end B inside the motor. A flow guide is set on the rotor shaft, and the flow guide is located to the left of the first radiator. The second radiator is set on the outer ring of the flow guide and is coaxially fixedly connected to the flow guide. When the flow guide rotates with the rotor, the second radiator rotates synchronously, and is used to guide the axial airflow in the circumferential direction.

[0006] Preferably, both the first and third radiators include a hub, the hub has a shaft hole at its center, the hub is fixedly mounted on the rotor shaft through the shaft hole, and the hub is radially outwardly provided with an axial flow first blade, a cover and a centrifugal second blade.

[0007] Preferably, the second radiator is a centrifugal impeller, used to increase the gas pressure on the side of the outlet terminal B inside the motor housing.

[0008] Preferably, the drainer includes a body and a frustum-shaped draining surface disposed at the inlet end of the body, with the small end of the draining surface facing the first radiator and the large end facing the second radiator.

[0009] Preferably, the body of the drain has a through-hole along the circumferential direction.

[0010] Preferably, the cover is a thin-walled hollow cylinder, which allows the heat generated by the stator and rotor to flow out to the left end through the inner cavity of the cover, thereby improving the heat dissipation performance of the motor.

[0011] Preferably, the number of the first leaf is 3 to 8.

[0012] Preferably, a first maintenance gate is provided upstream of the intermediate gate, and a second maintenance gate is provided downstream. A bar screen is provided between the first maintenance gate and the intermediate gate. The first and second maintenance gates are used to cut off the upstream and downstream water bodies for the intermediate gate to be maintained.

[0013] Preferably, the submersible motor has a hydraulic component at the inlet and a flap valve at the outlet.

[0014] As can be seen from the above technical solutions, this utility model has the following beneficial effects:

[0015] (1) High-efficiency active heat dissipation: This utility model integrates the first, second and third heat sinks and the drainer on the motor rotor shaft to construct a forced-drive internal air circulation system, which transforms the traditional passive heat dissipation into active heat dissipation, greatly improving the heat dissipation efficiency and effectively reducing the temperature rise of the core components of the motor.

[0016] (2) Precise directional cooling: Axial flow blades are used to axially cool the motor core and windings, while centrifugal blades are used to specifically cool the stator end coils that are difficult to dissipate heat, thus achieving precise thermal management of the main heat source.

[0017] (3) The system has high reliability. All heat dissipation components are driven by the main shaft power, without the need for additional power source and control system. The structure is compact and the operation is reliable. Good heat dissipation conditions significantly extend the insulation life of the motor and reduce failures caused by overheating, thereby improving the overall operational reliability and service life of the integrated pump gate. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the integrated pump gate structure according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the submersible motor structure according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram illustrating the heat dissipation effect of an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the first radiator structure according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the drainage device structure according to an embodiment of this utility model.

[0024] In the diagram: 1. First maintenance gate; 2. Bar screen cleaner; 3. Hydraulic components; 4. Submersible motor; 41. Rotor; 42. Stator winding; 43. Motor housing; 44. Second radiator; 45. Diverter; 451. Body; 453. Diverting hole; 454. Diverting surface; 46. First radiator; 461. Hub; 462. First blade; 463. Cover; 464. Second blade; 47. Third radiator; 5. Guide cylinder; 6. Intermediate gate; 7. Flap gate; 8. Second maintenance gate. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1 As shown, this utility model provides an integrated pump gate with a high-efficiency heat dissipation motor, including a pool body. An intermediate gate 6 is installed within the pool body. A first maintenance gate 1 is located upstream of the intermediate gate 6, and a second maintenance gate 8 is located downstream. A bar screen 2 is installed between the first maintenance gate 1 and the intermediate gate 6. The first and second maintenance gates 1 and 8 are used to cut off the upstream and downstream water bodies during maintenance. A guide cylinder 5 is horizontally installed at the bottom of the intermediate gate 6. A submersible motor 4 is coaxially fixedly installed inside the guide cylinder 5. The inlet end of the submersible motor 4 ( Figure 1 The middle right end is connected to a hydraulic component 3. The inlet end of the guide tube is equipped with a flow guiding component, and the outlet end is connected to a flap valve 7. The flap valve 7 is compatible with the guide tube 5.

[0027] like Figure 2As shown, the submersible motor 4 is the core improvement of this utility model. It includes a motor housing 43, within which a stator winding 42 and a rotor 41 are disposed. Three main heat dissipation components are integrated on the shaft of the rotor 41: a third heat sink 47 located at the inlet end A, a first heat sink 46 located at the outlet end B, and a second heat sink 44 located to the left of the first heat sink 46. A drain 45 is disposed between the first heat sink 46 and the second heat sink 44.

[0028] In this embodiment, the third heat sink 47 is disposed inside the inlet A coil of the winding, and the first heat sink 46 is disposed inside the outlet B coil of the stator winding 42.

[0029] Combination Figure 2 and Figure 4 The first radiator 46 and the third radiator 47 have the same structure, both including a hub 461. The hub 461 is fixedly installed on the shaft of the rotor 41 through the central shaft hole. The hub 461 is arranged radially outward with a first blade 462, a cover 463, and a second blade 464 arranged on the outer ring of the cover 463.

[0030] In this embodiment, the first blade 462 is axial flow type, and there are 3 to 8 blades. The first blade 462 rotates at high speed with the rotor 41, generating axial fluid flowing to the left end. The heat dissipated from the stator winding 42 and the rotor 41 core, as well as the gas at the right end (inlet end A) of the motor, flows from the right end to the left end. This allows the heat inside the stator winding 42 and the rotor 41 core to be axially flowed out in time, thereby reducing the temperature of the stator winding 42 and the rotor 41 core in time, so as to ensure the efficient operation of the submersible motor 4.

[0031] In this embodiment, the cover 463 is a thin-walled hollow cylinder, which allows the heat generated by the stator winding 42 and the rotor 41 to flow out to the left end through the inner cavity of the cover 463, thereby improving the heat dissipation performance of the motor.

[0032] In this embodiment, the second blade 464 is centrifugal (radial). The second blade 464 rotates at high speed with the rotor 41 to generate radial gas, which carries away the heat of the end coil of the stator winding 42 in time, thereby reducing the temperature of the stator coil and enabling the submersible motor 4 to operate efficiently.

[0033] In this embodiment, the third radiator 47 draws air from the external heat dissipation pipe of the submersible motor 4 into the cavity at the right end, accelerating the flow of hot fluid from the right end to the left end. It flows into the motor cavity at the left end from the air inlet J. During the flow, the water outside the heat dissipation pipe cools the hot fluid. The cooled gas flows to the left end through the channel between the spokes on the rotor 41 shaft. Since the gas with a high temperature inside the heat dissipation pipe is cooled by the external water, the gas temperature is effectively reduced, thereby effectively reducing the temperature of the stator winding 42 and the rotor 41 core.

[0034] Combination Figure 2 , Figure 3 and Figure 5 The inlet end of the drainer 45 is designed as a frustum-shaped drain surface 454, with the smaller end facing the first radiator 46 and the larger end facing the second radiator 44. The body 451 of the drainer 45 has multiple through-holes 453 on its circumference.

[0035] In this embodiment, when the fluid generated by the rotation of the first radiator 46 flows to the left end and reaches the flow-guiding surface 454, the gas flows obliquely in the circumferential direction along the flow-guiding surface 454 and flows outward under the action of the second radiator 44, thereby accelerating the flow of the high-temperature gas.

[0036] The high-speed rotation of the first radiator 46 accelerates the heat generated by the stator winding 42 and rotor 41, as well as the gas coming from the right side of the motor cavity, and then it flows out from the exhaust port P. The high-speed rotation of the second radiator 44 drives most of the gas Q1 to move in a centrifugal motion, which increases the pressure of the fluid inside the left end cavity. The fluid enters the heat dissipation pipe outside the motor housing 43 from the exhaust port P. A small part of the fluid Q2 passes through the diversion hole 453 and moves to the left. It first exchanges heat with the left end of the motor housing 43 (the motor is submerged in water), and then moves to the surrounding housing of the motor under the action of the second radiator 44, exchanges heat with the housing again, and finally is discharged from the exhaust port P for circulating cooling.

[0037] Working principle: When the rotor 41 of the submersible motor 4 rotates at high speed, the first radiator 46 and the third radiator 47 rotate synchronously. The axial-flow first blade 462 generates a strong axial main airflow from the inlet end A to the outlet end B. This airflow passes through the stator winding 42 and the iron core of the rotor 41, carrying away the core heat. At the same time, the centrifugal second blade 464 generates radial airflow, which effectively cools the end coils of the stator winding 42.

[0038] After the main axial airflow reaches the diverter 45, it smoothly changes from axial flow to circumferential flow under the guidance of its frustum-shaped diverter surface 454. Subsequently, the second radiator 44 (centrifugal impeller) rotating coaxially with the diverter 45 pressurizes and accelerates this airflow, causing most of Q1 to be centrifugally thrown into the heat dissipation pipe outside the motor housing 43 (not shown in the figure), where it exchanges heat with the cooling water outside the pipe. The cooled gas is then re-drawn into the third radiator 47, forming the main cooling cycle.

[0039] At the same time, a small portion of the airflow Q2 flows through the diversion hole 453 on the diverter 45 to the left end cover of the motor and exchanges heat with the inner wall. Then, under the action of the second radiator 44, it flows along the inner wall of the motor housing 43 for auxiliary heat dissipation. Finally, it also merges into the main circulation and is discharged. This system together constitutes an efficient and reliable forced circulation cooling system, ensuring that the submersible motor 4 can maintain low temperature and high efficiency operation even in harsh environments.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated pump gate with a high-efficiency heat dissipation motor, comprising a pool body and an intermediate gate (6) disposed within the pool body, wherein a guide cylinder (5) is horizontally disposed at the bottom of the intermediate gate (6), and a submersible motor (4) is coaxially fixedly disposed within the guide cylinder (5), the submersible motor (4) comprising a stator winding (42) and a rotor (41) therein, wherein a first radiator (46), a second radiator (44), and a third radiator (47) are disposed on the rotor (41), wherein the first radiator (46), the second radiator (44), and the third radiator (47) are disposed on the rotor (41), wherein the first radiator (46), the second radiator (44), and the third radiator (47) are disposed on the rotor (46), the second radiator (46), the third radiator (47), the third radiator (46 ...6), the third radiator (47), the third radiator (46), the third radiator (46), the third radiator (46), the third radiator (47), the third radiator (46), the third radiator (46), the third radiator (46), the third radiator (46), the third radiator (47), the third radiator (46), the third radiator (46), the third radiator (46), the third radiator (46), the third radiator (4 A radiator (46) and a third radiator (47) are respectively fixed on the rotor (41) at both ends of the stator winding (42) to generate axial airflow from the inlet end A to the outlet end B inside the motor. A flow guide (45) is provided on the shaft of the rotor (41), and the flow guide (45) is located to the left of the first radiator (46). A second radiator (44) is provided on the outer ring of the flow guide (45) and is coaxially fixedly connected to the flow guide (45) to guide the axial airflow in the circumferential direction.

2. The integrated pump gate with high-efficiency heat dissipation motor according to claim 1, characterized in that, Both the first radiator (46) and the third radiator (47) include a hub (461). The hub (461) has a shaft hole at its center. The hub (461) is fixedly mounted on the rotor (41) shaft through the shaft hole. The hub (461) is provided with an axial flow first blade (462), a cover (463) and a centrifugal second blade (464) in a radially outward sequence.

3. The integrated pump gate with high-efficiency heat dissipation motor according to claim 1, characterized in that, The second radiator (44) is a centrifugal impeller used to increase the gas pressure on the B side of the outlet end inside the motor housing (43).

4. The integrated pump gate with high-efficiency heat dissipation motor according to claim 1, characterized in that, The drainer (45) includes a body (451) and a frustum-shaped draining surface (454) disposed at the inlet end of the body (451). The small end of the draining surface (454) faces the first radiator (46) and the large end faces the second radiator (44).

5. The integrated pump gate with high-efficiency heat dissipation motor according to claim 3, characterized in that, The body (451) of the drainer (45) has a through-hole (453) along the circumferential direction.

6. The integrated pump gate with high-efficiency heat dissipation motor according to claim 2, characterized in that, The cover (463) is a thin-walled hollow cylinder.

7. The integrated pump gate with high-efficiency heat dissipation motor according to claim 2, characterized in that, The number of the first blade (462) is 3 to 8.

8. The integrated pump gate with high-efficiency heat dissipation motor according to claim 1, characterized in that, The intermediate gate (6) is provided with a first maintenance gate (1) upstream and a second maintenance gate (8) downstream. A bar screen cleaner (2) is provided between the first maintenance gate (1) and the intermediate gate (6).

9. The integrated pump gate with high-efficiency heat dissipation motor according to claim 1, characterized in that, The submersible motor (4) has a hydraulic component (3) at its inlet end and a flap gate (7) at its outlet end.

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