Motor cooling structure for water-cooled pipeline pump

Abstract

The utility model relates to the technical field of pipeline pump cooling, in particular to a motor cooling structure for a water-cooled pipeline pump, the pipeline pump comprises a pump head and a submersible motor which is horizontally arranged, the pump head is arranged at one end of an output shaft of the submersible motor, and the outer wall of the submersible motor is wrapped with a water-cooled shell. A water cooling cavity is formed between the water cooling shell and the outer wall of the submersible motor, a water inlet pipe is arranged between the cavity wall of the water cooling cavity and the water outlet end of the pump head in a communicating mode, a water outlet pipe is arranged between the cavity wall of the water cooling cavity and the water inlet end of the pump head in a communicating mode, and the water inlet pipe is communicated with the lower portion of the cavity wall of the end, away from the pump head, of the water cooling cavity. And the water outlet direction of the water outlet end of the water inlet pipe faces the pump head. The cooling and heat dissipation efficiency of the horizontal pipeline pump can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline pump cooling, in particular to a motor cooling structure for a water-cooled pipeline pump. Background Art

[0002] The horizontal pipeline pump is designed based on the performance parameters of the single-stage single-suction centrifugal pump and the unique structural combination of the vertical pump. Its motor is horizontally arranged on the base, and its pump head is arranged at one end of the motor output shaft. The output shaft of the motor is connected to the impeller inside the pump head. Usually, the axis of the pipe outlet at the water inlet end of the pump head is arranged horizontally, and the axis of the pipe outlet at the water outlet end is arranged vertically or horizontally (to the left or right).

[0003] Horizontal pipeline pumps are used in various industrial production fields, such as the petroleum, chemical, metallurgy, electric power, papermaking, food and pharmaceutical, and synthetic fiber industries. Due to production requirements, horizontal pipeline pumps often need to operate continuously around the clock. Their motors typically use cooling fans to dissipate heat. However, in high-temperature environments, the motor's heat dissipation is poor, which can easily damage internal components, causing the horizontal pipeline pump to malfunction and shortening its normal lifespan. To improve the heat dissipation of horizontal pipeline pumps, submersible motors can be used. Submersible motors can be placed underwater for operation. Since submersible motors operate underwater, they can effectively dissipate heat through water cooling. However, in some underwater environments, the complex environment makes horizontal pipeline pumps unsuitable for underwater operation. In these cases, horizontal pipeline pumps can only be installed on the ground. However, since these horizontal pipeline pumps are only suitable for underwater operation and cannot be directly installed on the ground, submersible motors lack additional cooling fans and are easily burned out when operating on the ground. This results in a relatively limited use case for horizontal pipeline pumps, which can only be used underwater or on the ground. Utility Model Content

[0004] The utility model aims to provide a motor cooling structure for a water-cooled pipeline pump, so as to solve the problem that a horizontal pipeline pump cannot be used for both water and gas.

[0005] The utility model is achieved through the following technical solutions:

[0006] A motor cooling structure for a water-cooled pipeline pump, the pipeline pump comprising a pump head and a horizontally arranged submersible motor, the pump head being arranged at one end of an output shaft of the submersible motor, the outer wall of the submersible motor being wrapped with a water-cooling shell, a water-cooling chamber being formed between the water-cooling shell and the outer wall of the submersible motor, a water inlet pipe being arranged in communication between the cavity wall of the water-cooling cavity and the water outlet end of the pump head, and a water outlet pipe being arranged in communication between the cavity wall of the water-cooling cavity and the water inlet end of the pump head, the water inlet pipe being communicated with the lower portion of the cavity wall of the water-cooling cavity away from one end of the pump head, and the water outlet direction of the water outlet end of the water inlet pipe being toward the pump head.

[0007] Furthermore, the water outlet pipe is communicated with the upper portion of the cavity wall of the water cooling cavity close to one end of the pump head, and the water inlet end of the water outlet pipe is higher than the highest point of the outer wall of the submersible motor.

[0008] Furthermore, a water inlet valve is provided on the water inlet pipe.

[0009] Furthermore, a plurality of heat exchange protrusions are provided on the outer wall of the submersible motor, and the plurality of heat exchange protrusions are all made of iron, and gaps are left between the plurality of heat exchange protrusions and the inner wall of the water-cooling shell.

[0010] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0011] 1. In the present invention, when the horizontal pipeline pump is working on the ground, the liquid to be transported enters the pump head from the water inlet end of the pump head and is then output from the water outlet end of the pump head. The liquid at the water outlet end of the pump head can be transported to the inside of the water-cooling cavity between the outer wall of the submersible motor and the water-cooling shell through the water inlet pipe. The liquid can absorb more heat from the surface of the submersible motor. As the liquid level inside the water-cooling cavity rises, the liquid inside the water-cooling cavity can be transported to the water inlet end of the pump head through the water outlet end and mixed with the liquid at the water inlet end of the pump head. This is repeated, which can greatly improve the heat dissipation efficiency of the horizontal pipeline pump and facilitate the horizontal pipeline pump to work normally in a higher temperature environment. In addition, the water inlet The pipe is connected to the lower part of the wall of the water-cooling chamber away from the pump head, and the water outlet direction of the water inlet pipe of the cooling chamber is toward the direction of the pump head. Since the water pressure in the water inlet pipe is relatively high, the water inlet pipe is convenient for flushing toward the bottom of the cooling chamber, so that the impurities inside the cooling chamber can be kept in a relatively evenly distributed state in the cooling chamber. That is, the impurities inside the cooling chamber can be discharged through the water outlet pipe, reducing the accumulation of impurities on the bottom wall of the cooling chamber. If the underwater environment permits, the horizontal pipeline pump can also be directly placed underwater for operation, and the submersible motor can be water-cooled and dissipated by complete immersion, which can save the step of building a pump room.

[0012] 2. The water outlet pipe is connected to the upper part of the cavity wall of the water-cooling chamber near the pump head, and the water inlet end of the water outlet pipe is higher than the highest point of the outer wall of the submersible motor. The water inlet pipe is connected to the lower part of the water-cooling chamber. When the horizontal pipeline pump starts working, the water inlet pipe gradually transports liquid into the water-cooling chamber, and the liquid level in the water-cooling chamber gradually rises until the liquid level completely submerges the outer wall of the submersible motor, so that the liquid inside the water-cooling chamber can cool and dissipate heat for the entire outer wall of the submersible motor. When the liquid level exceeds the water inlet end of the water outlet pipe and the water pressure inside the water cooling chamber is greater than the water pressure at the water inlet end of the pump body, the liquid inside the water cooling chamber will be transported to the water inlet end of the pump body through the water outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention.

[0014] In the attached figure:

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a partial structural diagram of the utility model.

[0017] Markings and corresponding parts names in the accompanying drawings:

[0018] 1. Base; 2. Pump head; 3. Motor; 4. Water-cooling shell; 5. Water inlet pipe; 6. Water outlet pipe; 7. Water inlet valve; 8. Heat exchange protrusion. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the following examples and accompanying drawings. The exemplary embodiments and descriptions of the present invention are intended only to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the stage of actual development and use.

[0020] Example 1

[0021] A motor cooling structure for a water-cooled pipeline pump, referring to Figure 1 、 Figure 2 The pipeline pump includes a base 1, a pump head 2 and a submersible motor 3 placed horizontally on the base 1. The pump head 2 is arranged at one end of the output shaft of the submersible motor 3. The outer wall of the submersible motor 3 is wrapped with a water-cooling shell 4. A water-cooling cavity is formed between the water-cooling shell 4 and the outer wall of the submersible motor 3. A water inlet pipe 5 is provided between the cavity wall of the water-cooling cavity and the water outlet end of the pump head 2, and a water outlet pipe 6 is provided between the water inlet end of the pump head 2. The water inlet pipe 5 is connected to the lower part of the cavity wall of the water-cooling cavity away from the pump head 2, and the water outlet direction of the water outlet end of the water inlet pipe 5 is toward the pump head 2.

[0022] In this solution, the pipeline pump is a horizontal pipeline pump. When the horizontal pipeline pump is working on the ground, the liquid to be transported enters the pump head 2 from the water inlet end of the pump head 2 and is then output from the water outlet end of the pump head 2. The liquid at the water outlet end of the pump head 2 can be transported to the inside of the water-cooling cavity between the outer wall of the submersible motor 3 and the water-cooling shell 4 through the water inlet pipe 5. The liquid can absorb more heat from the surface of the submersible motor 3. As the liquid level inside the water-cooling cavity rises, the liquid inside the water-cooling cavity can be transported to the water inlet end of the pump head 2 through the water outlet end and mixed with the liquid at the water inlet end of the pump head 2. This is repeated, which can greatly improve the heat dissipation efficiency of the horizontal pipeline pump and facilitate the horizontal pipeline pump to work normally in a higher temperature environment. In addition, the water inlet pipe 5 is connected to the lower part of the wall of the water-cooling chamber away from the pump head 2, and the water outlet direction of the water inlet pipe 5 of the cooling chamber is toward the direction of the pump head 2. Since the water pressure in the water inlet pipe 5 is relatively high, the water inlet pipe 5 is convenient for flushing toward the bottom of the cooling chamber, so that the impurities inside the cooling chamber can be kept in a relatively uniform state in the cooling chamber, that is, the impurities inside the cooling chamber can be discharged through the water outlet pipe 6, reducing the accumulation of impurities on the bottom wall of the cooling chamber; if the underwater environment permits, the horizontal pipeline pump can also be directly placed underwater to work, and the submersible motor 3 can be water-cooled and dissipated by complete immersion, which can save the step of building a pump room.

[0023] Example 2

[0024] Based on Example 1, in this example, Figure 1 、 Figure 2 The water outlet pipe 6 is connected to the upper part of the wall of the water cooling chamber near the pump head 2, and the water inlet end of the water outlet pipe 6 is higher than the highest point of the outer wall of the submersible motor 3. The water outlet pipe 6 is connected to the upper part of the wall of the water cooling chamber near the pump head 2, and the water inlet end of the water outlet pipe 6 is higher than the highest point of the outer wall of the submersible motor 3. The water inlet pipe 5 is connected to the lower part of the water cooling chamber. When the horizontal pipeline pump starts working, the water inlet pipe 5 gradually transports liquid into the water cooling chamber, and the liquid level in the water cooling chamber gradually rises until the liquid level completely submerges the outer wall of the submersible motor 3, so that the liquid inside the water cooling chamber can cool and dissipate heat from the entire outer wall of the submersible motor 3. When the liquid level exceeds the water inlet end of the water outlet pipe 6 and the water pressure inside the water cooling chamber is greater than the water pressure at the water inlet end of the pump body, the liquid inside the water cooling chamber will be transported to the water inlet end of the pump body through the water outlet pipe 6.

[0025] Example 3

[0026] Based on Example 2, in this example, referring to Figure 1 、 Figure 2A water inlet valve 7 is provided on the water inlet pipe 5. When the working environment temperature of the horizontal pipeline pump is low, such as in winter, the cooling and heat dissipation of the submersible motor 3 can be slowed down in this case, and the water inlet valve 7 can be adjusted down. When the pipeline pump is working, the liquid flow rate through the water inlet pipe 5 at the water outlet of the pump body is reduced. Correspondingly, the flow rate delivered to the required part by the water outlet of the pump body is larger, which can increase the efficiency of liquid delivery to a certain extent; in addition, when the horizontal pipeline pump works directly underwater, the water inlet valve 12 can be closed or adjusted down, because the horizontal pipeline pump as a whole can be water-cooled and dissipated through the underwater environment.

[0027] Example 4

[0028] Based on Example 3, in this example, referring to Figure 1 、 Figure 2 The outer wall of the submersible motor 3 is provided with multiple heat exchange protrusions 8. These protrusions 8 are all made of iron, and each has a gap between it and the inner wall of the water-cooling shell 4. These multiple heat exchange protrusions 8 increase the contact area between the outer wall of the submersible motor 3 and the liquid inside the water-cooling chamber, thereby increasing the cooling efficiency of the liquid on the outer wall of the submersible motor 3.

[0029] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A motor cooling structure for a water-cooled pipeline pump, the pipeline pump comprising a pump head (2) and a horizontally arranged submersible motor (3), the pump head (2) being arranged at one end of an output shaft of the submersible motor (3), characterized in that: The outer wall of the submersible motor (3) is wrapped with a water-cooling shell (4), and a water-cooling cavity is formed between the water-cooling shell (4) and the outer wall of the submersible motor (3). A water inlet pipe (5) is provided between the cavity wall of the water-cooling cavity and the water outlet end of the pump head (2), and a water outlet pipe (6) is provided between the cavity wall of the water-cooling cavity and the water outlet end of the pump head (2). The water inlet pipe (5) is connected to the lower part of the cavity wall of the water-cooling cavity away from the pump head (2), and the water outlet direction of the water outlet end of the water inlet pipe (5) is toward the pump head (2).

2. The motor cooling structure for a water-cooled pipeline pump according to claim 1, characterized in that: The water outlet pipe (6) is connected to the upper portion of the cavity wall of the water cooling cavity close to one end of the pump head (2), and the water inlet end of the water outlet pipe (6) is higher than the highest point of the outer wall of the submersible motor (3).

3. The motor cooling structure for a water-cooled pipeline pump according to claim 2, characterized in that: The water inlet pipe (5) is provided with a water inlet valve (7).

4. The motor cooling structure for a water-cooled pipeline pump according to claim 3, characterized in that: The outer wall of the submersible motor (3) is provided with a plurality of heat exchange protrusions (8), all of which are made of iron, and gaps are left between the plurality of heat exchange protrusions (8) and the inner wall of the water-cooling shell (4).

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