CN215419860U

CN215419860U - Circulation cooling's submersible motor

Info

Publication number: CN215419860U
Application number: CN202121987550.9U
Authority: CN
Inventors: 张顺明; 吴学志; 李凤元; 许占利; 王志远
Original assignee: Shijiazhuang Yuanjian Water Pump Manufacturing Co ltd
Current assignee: Shijiazhuang Yuanjian Water Pump Manufacturing Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-01-04
Anticipated expiration: 2031-08-23

Abstract

The utility model provides a circulative cooling submersible motor, which comprises a shell, wherein an inner sleeve is connected in the shell, an outer cooling cavity is formed between the shell and the inner sleeve, a motor inner cavity is formed inside the inner sleeve, a stator and a rotor matched with the stator are arranged in the motor inner cavity, the rotor is provided with a rotor shaft, the rotor shaft is rotatably connected with the shell, a cooling water inlet and a cooling water outlet are arranged between the outer cooling cavity and the motor inner cavity, the cooling water inlet and the cooling water outlet are relatively positioned at two ends of the motor inner cavity in the axial direction of the rotor shaft, the rotor shaft is fixedly connected with blades, and the blades are positioned in the motor inner cavity. Compared with the existing submersible motor with only a single motor inner cavity, the motor can be internally filled with water for circulating cooling, and has high heat dissipation efficiency.

Description

Circulation cooling's submersible motor

Technical Field

The utility model relates to the technical field of submersible power devices, in particular to a circulating cooling submersible motor.

Background

A submersible motor is a motor that has been developed specifically for use under water, and is a motor that is directly coupled to a pump or an actuator and operates in the water. The submersible motor is mostly cooled by a water-filling type cooling method, namely, deionized water is filled in the inner cavity of the motor, the stator iron core, the stator winding, the rotor iron core, the rotor winding and the like are all immersed in the water and are directly cooled by the water in the motor, and heat is conducted to the shell by the water and then is transferred to a working environment water flow flowing through the surface of the shell through the shell to be taken away. Compared with the scheme that the common motor is cooled by air, the water cooling has higher heat conductivity. However, in the existing water-filled type cooling submersible motor, the water filled in the motor does not flow circularly, and is relatively static dead water, the heat dissipation speed is slow, and the situation of local high temperature caused by heat accumulation is easy to occur. For example, the sand-proof vertical submersible motor with the publication number of CN204947795U and the horizontally-operated high-voltage submersible motor with the publication number of CN205123467U are both the submersible motors with the above-mentioned structures, so that parts can easily work in a high-temperature environment for a long time, and the stable work and the service life of the submersible motor are difficult to ensure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a submersible motor which can be internally filled with water for circulating cooling.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

the utility model provides a circulative cooling's submerged motor, includes the casing, and the casing in-connection has the endotheca, forms the external cooling chamber between casing and the endotheca, and the inside of endotheca forms the motor inner chamber, the motor intracavity be provided with the stator and with stator matched with rotor, the rotor has the rotor shaft, and the rotor shaft rotates with the casing to be connected, is provided with cooling water inlet and cooling water outlet between external cooling chamber and the motor inner chamber, and cooling water inlet and cooling water outlet lie in the motor inner chamber at the ascending both ends of rotor shaft axis direction relatively, and rotor shaft fixedly connected with paddle, paddle lie in the motor inner chamber.

Further: and a space is formed between the two ends of the inner sleeve and the shell, the space at one end forms a cooling water inlet, and the space at the other end forms a cooling water outlet.

Further: the shell is fixedly connected with the inner sleeve through the fins.

Further: the fins are arranged along the axial direction of the rotor shaft.

Further: the number of the fins is more than 2 and the fins are uniformly distributed along the circumferential direction of the rotor shaft.

By adopting the technical scheme, the utility model has the technical effect of providing the circulating cooling submersible motor, compared with the existing submersible motor only provided with a single motor inner cavity, the motor is additionally provided with the outer cooling cavity and the paddle which is arranged in the motor inner cavity and synchronously rotates with the rotor shaft, so that when the motor works, the water filled in the motor can be pushed into the outer cooling cavity from the motor inner cavity through the cooling water inlet, and then flows back to the motor inner cavity through the cooling water outlet to form circulation. The circulating cooling enables cooling water in the machine to fully flow, eliminates heat accumulation, enables the water to be pushed to the outer cooling cavity to exchange heat with the outer wall of the machine shell in the circulating process, avoids original slow heat transfer, and improves the overall heat dissipation efficiency.

Drawings

FIG. 1 is a front view showing a schematic structure of embodiment 1 of the present invention;

fig. 2 is a schematic top sectional view of the structure of the casing of embodiment 2 of the present invention;

wherein, 1-external cooling cavity, 2-machine shell, 3-inner sleeve, 4-stator, 5-rotor shaft, 6-paddle, 7-cooling water outlet, 8-cooling water inlet, 9-motor inner cavity, 10-fin.

Detailed Description

Example 1

As shown in fig. 1, the circulative cooling's of this embodiment submersible motor, including casing 2, casing 2 in-connection has endotheca 3, forms outer cooling chamber 1 between casing 2 and the endotheca 3, and the inside of endotheca 3 forms motor inner chamber 9, is provided with stator 4 in the motor inner chamber 9 and with stator 4 matched with rotor, the rotor has rotor shaft 5, and rotor shaft 5 rotates with casing 2 to be connected, is provided with cooling water inlet 8 and cooling water outlet 9 between outer cooling chamber 1 and the motor inner chamber 9, and cooling water inlet 8 and cooling water outlet 9 are located motor inner chamber 9 both ends on rotor shaft 5 axis direction relatively, and rotor shaft 5 fixedly connected with paddle 6, paddle 6 are located motor inner chamber 9.

After setting up like this, compare in the current dive motor that only has single motor inner chamber 9, this scheme has add outer cooling chamber 1, and the paddle 6 with rotor shaft 5 synchronous revolution that sets up in motor inner chamber 9 is added to the interpolation for the motor just can be with filling water in the machine from motor inner chamber 9 in the cooling water import 8 propelling movement outer cooling chamber 1 when work, later in the cooling water export 9 backward flow to motor inner chamber 9 again, form the circulation. This kind of circulative cooling makes the cooling water in the built-in fully flow, has eliminated the heat and has piled up the phenomenon, and fills water and all can be carried out the heat transfer by propelling movement to outer cooling chamber 1 and casing 3 outer wall at the circulation in-process, has avoided original slow heat transfer, has improved holistic radiating efficiency.

This embodiment is still further: and a space is formed between the two ends of the inner sleeve 3 and the shell 2, the space at one end forms a cooling water inlet 8, and the space at the other end forms a cooling water outlet 9. The cooling water inlet 8 and the cooling water outlet 9 which are arranged to form an annular cavity shape are compared with an opening window type inlet and outlet, so that water flow is smoother, turbulent friction is avoided, extra heat is generated, relative flow is larger, and the improvement of heat dissipation efficiency is facilitated.

Example 2

This embodiment is substantially the same as embodiment 1 except that: as shown in fig. 2, the housing 2 and the inner housing 3 are fixedly connected by fins 10. Use fin 10 to connect both, solved on the one hand both and connected fixed problem, on the other hand compares in the scheme that uses structures such as support column to connect, uses fin 10 then can make its effect that plays the heat exchanger fin when rivers pass through, has increased the area of contact of casing 2 with rivers, has improved heat exchange efficiency.

This embodiment is still further: the fins 10 are arranged along the axial direction of the rotor shaft 5, namely the vertical direction in fig. 1, so that on one hand, water flow can smoothly pass through the fins 10 in the flow direction, and excessive wall surface friction is avoided to form turbulent flow so as to generate extra heat; on the other hand, the manufacturing is also convenient, for example, the casing 2 with the arranged fins 10 is manufactured by adopting a casting process, so that the die drawing is convenient, and the manufacturing cost is reduced.

In addition, the embodiment further comprises: the number of the fins 10 is more than 2 and is evenly distributed along the circumferential direction of the rotor shaft 5. The number of the fins 10 is increased, so that the heat exchange area can be further increased, and the uniform arrangement is favorable for the balanced support of the shell 2 to the inner sleeve 3, so that the stress state of the shell is improved.

Example 3

The present embodiment is substantially the same as embodiment 2, except that a heat dissipation fin (not shown) is also disposed on the outer surface of the housing 2 to increase the heat exchange area between the heat dissipation fin and the ambient water, thereby increasing the heat dissipation efficiency of the whole machine.

Claims

1. A hydrokinetic cooled submersible motor characterized by: including casing (2), casing (2) in-connection has endotheca (3), forms outer cooling chamber (1) between casing (2) and endotheca (3), and the inside of endotheca (3) forms motor inner chamber (9), is provided with stator (4) in motor inner chamber (9) and with stator (4) matched with rotor, the rotor has rotor shaft (5), and rotor shaft (5) rotate with casing (2) to be connected, is provided with cooling water inlet (8) and cooling water export (7) between outer cooling chamber (1) and motor inner chamber (9), and cooling water inlet (8) and cooling water export (7) are located motor inner chamber (9) at the both ends of rotor shaft (5) axis direction relatively, and rotor shaft (5) fixedly connected with paddle (6), paddle (6) are located motor inner chamber (9).

2. A cyclically cooled submersible motor according to claim 1 wherein: and a distance is reserved between the two ends of the inner sleeve (3) and the shell (2), the distance at one end forms a cooling water inlet (8), and the distance at the other end forms a cooling water outlet (7).

3. A cyclically cooled submersible motor according to claim 1 wherein: the shell (2) is fixedly connected with the inner sleeve (3) through the fins (10).

4. A cyclically cooled submersible motor according to claim 3 wherein: the fins (10) are arranged in the axial direction of the rotor shaft (5).

5. A cyclically cooled submersible motor according to claim 4 wherein: the number of the fins (10) is more than 2 and the fins are uniformly distributed along the circumferential direction of the rotor shaft (5).