Motor heat dissipation structure under low-temperature corrosive medium working condition

Abstract

The utility model relates to the technical field of immersed pumps, in particular to a motor heat dissipation structure under a low-temperature corrosive medium working condition. A motor rotor is arranged on a rotor shaft; a heat dissipation structure is assembled on the rotor shaft; the heat dissipation structure is located at the lower part of the motor rotor. The heat dissipation structure comprises a fan and a wind shield. The fan and the motor rotor are integrally cast and formed, are fixedly embedded on the rotor shaft and are positioned at the lower part of the motor rotor; and the wind shield is fixedly arranged on the rotor shaft and is positioned at the lower part of the fan. The fan is provided with a blade structure which drives gas to move during rotation. The outer diameter of the wind shield is larger than or equal to that of the fan, the flowing direction of gas is changed, the gas in the sealing cavity forms internal circulation, and heat dissipation is promoted. According to the technical scheme, the problem that in an immersed pump in the prior art, nitrogen in the immersed pump cannot circulate and cannot exchange heat with a low-temperature medium outside a shell, so that the heat accumulation phenomenon occurs during operation of a motor is solved.

Description

TECHNICAL FIELD

[0001] The utility model low temperature corrosion medium working condition motor heat radiation structure relates to submersible pump technical field, and especially relates to a low temperature corrosion medium working condition motor heat radiation structure. BACKGROUND

[0002] Because low temperature corrosion medium can corrode motor, lead to motor can't work, through the shell sealing structure will be closed in the sealed cavity, through in the motor closed cavity passes into nitrogen and carries out positive pressure protection, make motor and low temperature corrosion medium isolation, motor shell is placed in low temperature corrosion medium, the shell maintains at lower temperature, because the nitrogen that passes into motor cavity can't flow, can't carry out heat exchange with low temperature medium outside the shell, cause motor to occur heat accumulation phenomenon when running.

[0003] In view of the problems existing in the prior art, it is necessary to design a new low temperature corrosion medium working condition motor heat radiation structure to overcome the problems existing in the prior art. SUMMARY

[0004] According to the technical problem that the submersible pump in the prior art can't circulate nitrogen in the body, can't carry out heat exchange with low temperature medium outside the shell, leads to heat accumulation phenomenon when motor runs, a low temperature corrosion medium working condition motor heat radiation structure is provided.The utility model mainly changes the structure of motor rotor, is provided with heat dissipation fan on motor rotor, and the fan is equipped with fan blade structure, and the motor rotor rotates with the fan when the motor starts, and the nitrogen in the motor cavity is stirred up, and the nitrogen is taken to the wind baffle, the flow direction of gas is changed, internal circulation is formed, the gas is dispersed in the whole motor sealed cavity, and the gas in the motor sealed cavity is circulated in such a way, so as to improve the heat exchange efficiency of nitrogen in the motor sealed cavity and the shell, and ensure that the temperature rise of the motor is low.

[0005] The technical means adopted by the utility model are as follows:

[0006] A low temperature corrosion medium working condition motor heat radiation structure, comprising: motor rotor and rotor shaft;The motor rotor is mounted on the rotor shaft;

[0007] Further, the rotor shaft is assembled with a heat dissipation structure;

[0008] Further, the heat dissipation structure is located at the lower part of the motor rotor.

[0009] Further, the heat dissipation structure comprises: a fan and a wind baffle;

[0010] Further, the fan and the motor rotor are integrally cast into shape, fixedly embedded on the rotor shaft and located at the lower part of the motor rotor;

[0011] Further, the wind shield is fixed on the rotor shaft and located at the lower part of the fan.

[0012] Further, the fan has a blade structure and can drive gas to move when rotating.

[0013] Further, the outer diameter of the wind shield is greater than that of the fan, the flow direction of the gas is changed, the gas in the sealed cavity forms internal circulation, and heat dissipation is promoted.

[0014] When the equipment is started, the motor rotor, the fan, the wind shield and the rotor shaft rotate together. At this time, the gas in the motor closed cavity flows due to the rotation of the fan, and a relatively fast flow rate is generated. When the flowing gas touches the wind shield, the flow direction is changed by the wind shield, the gas is sent to various parts of the sealed cavity by the rotating wind shield, and circulation is formed. Since the shell of the motor sealed cavity is immersed in the low-temperature corrosive medium, the shell is always maintained at a low temperature, and when the gas passes through the shell, heat exchange occurs.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The low-temperature corrosive medium working condition motor heat dissipation structure provided by the utility model keeps the gas in the motor sealed cavity in a flowing state during operation, significantly improves the heat exchange efficiency, transfers the heat generated by the motor operation to the low-temperature corrosive medium through heat exchange, and removes the heat through the low-temperature corrosive medium, effectively avoids the heat accumulation phenomenon caused by continuous operation of the motor, ensures that the temperature rise of the motor is within the design range, and prolongs the service life of the motor winding.

[0017] 2. The low-temperature corrosive medium working condition motor heat dissipation structure provided by the utility model can realize long-time continuous operation, reduces the number of uninterrupted start-stop times, and effectively improves the service life of the bearing.

[0018] 3. The low-temperature corrosive medium working condition motor heat dissipation structure provided by the utility model reduces the maintenance frequency, ensures that the temperature rise of the motor is maintained at a low value that meets the standard, improves the service life of the motor winding, and improves the stability and reliability of the overall operation of the equipment.

[0019] 4. The low-temperature corrosive medium working condition motor heat dissipation structure provided by the utility model is used when conveying low-temperature corrosive medium. The motor must be isolated and sealed from the medium, and the motor is enclosed in a sealed cavity. After nitrogen is used to protect the cavity under positive pressure, the heat generated during the operation of the motor can be removed. Compared with the known air-cooled and water-cooled motors, this structure does not need to continuously provide corresponding media, has low failure rate, and improves the stability, reliability and safety of the operation of the equipment by using this scheme.

[0020] Summarize, the technical scheme of the utility model solves the problem that nitrogen in the shell of the submersible pump cannot circulate, cannot exchange heat with low-temperature medium outside the shell, and the motor generates heat when running in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 The utility model structural schematic diagram.

[0023] In the drawing: 1, motor rotor 2, fan 3, baffle, 4, rotor shaft DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present utility model and the features in the embodiments can be combined with each other without conflict. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present utility model clearer, the technical scheme in the embodiments of the present utility model will be described clearly and completely below in combination with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present utility model, but not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0026] It should be noted that the terms used here are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or their combination.

[0027] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many options. The intent is to be accurate in describing the principles and novel features of the application. Thus, although the application has been described with reference to specific embodiments thereof, it will be apparent to those of ordinary skill in the art that a number of changes can be made to the embodiments described without departing from the spirit and scope of the application. For example, the various features of the application can be combined in any combination, where possible. Accordingly, the scope of the application is to be construed as encompassing modifications and variations of the specific examples described herein, subject only to the conditions of the prior art.

[0028] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the protection scope of the present application: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0029] For the convenience of description, spatial relative terms such as "on", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0030] In addition, it should be noted that the use of "first", "second" and the like words to limit parts, only for the convenience of distinguishing the corresponding parts, if there is no further declaration, the above words have no special meaning, therefore, it cannot be understood as a limitation on the protection scope of the present application.

[0031] AsFigure 1 The utility model provides a low temperature corrosion medium working condition motor heat dissipation structure, include: motor rotor 1 and rotor shaft 4, motor rotor 1 is installed on rotor shaft 4, rotor shaft 4 is equipped with heat dissipation structure, heat dissipation structure is located in the lower part of motor rotor 1.

[0032] Heat dissipation structure includes: fan 2 and baffle 3, fan 2 and motor rotor 1 adopt integrative casting to form, fixedly inlayed on rotor shaft 4, and located in the lower part of motor rotor 1, baffle 3 is fixedly installed on rotor shaft 4, located in the lower part of fan 2.

[0033] Fan 2 has blade structure on, rotates and drives gas movement.

[0034] The outer diameter of baffle 3 is greater than or equal to the outer diameter of fan 2, changes the flow direction of gas, makes the gas in the sealed cavity form internal circulation, and promotes heat dissipation.

[0035] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not limited to it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the utility model embodiments.

Claims

1. A low temperature corrosive medium duty motor cooling structure comprising: The motor rotor (1) and the rotor shaft (4); the motor rotor (1) is mounted on the rotor shaft (4); characterized in that: The rotor shaft (4) is equipped with a heat dissipation structure; The heat dissipation structure is located at the lower part of the motor rotor (1).

2. The low-temperature corrosion medium working condition motor heat dissipation structure according to claim 1, characterized in that: The heat dissipation structure comprises a fan (2) and a wind deflector (3); The fan (2) is integrally cast with the motor rotor (1), is fixedly mounted on the rotor shaft (4), and is located at the lower part of the motor rotor (1); The wind deflector (3) is fixedly mounted on the rotor shaft (4) and is located at the lower part of the fan (2).

3. The low-temperature corrosion medium working condition motor heat dissipation structure according to claim 2, characterized in that: The fan (2) has a blade structure and drives gas to move when rotating.

4. The low-temperature corrosion medium working condition motor heat dissipation structure according to claim 2, characterized in that: The outer diameter of the wind deflector (3) is greater than or equal to the outer diameter of the fan (2), the flow direction of the gas is changed, the gas in the sealed cavity is formed into internal circulation, and heat dissipation is promoted.

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