CN215719582U

CN215719582U - Control unit and driving structure of deep well pump

Info

Publication number: CN215719582U
Application number: CN202120751781.3U
Authority: CN
Inventors: 庄佳元; 胡涛
Original assignee: Jiangsu Hyson Electronic Technology Co ltd
Current assignee: Jiangsu Hyson Electronic Technology Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2022-02-01
Anticipated expiration: 2031-04-13

Abstract

The utility model relates to the technical field of water pumps, in particular to a control unit and a driving structure of a deep well pump. A control unit for a deep well pump comprising: the opening of the heat dissipation shell is hermetically connected with a partition plate, the inner wall of the heat dissipation shell is also provided with a heat dissipation plate, a control cavity is formed in the heat dissipation shell, and heat dissipation insulating oil is filled in the control cavity; a controller fitted in the control chamber, the controller being fixed to the heat dissipation plate. A drive structure for a deep well pump, comprising: a control unit; the control unit is accommodated in the shell, the outer side wall of the heat dissipation shell is attached to the inner side wall of the shell, and a motor cavity is formed in the shell; the motor is accommodated in the motor cavity and is electrically connected with the control unit through a cable. The technical problems that the deep-well pump in the prior art is poor in heat dissipation capacity and cannot operate for a long time are solved.

Description

Control unit and driving structure of deep well pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a control unit and a driving structure of a deep well pump.

Background

The deep well pump is characterized in that a motor and a pump are integrated into a whole, the deep well pump is immersed in an underground well for pumping and conveying water, and is widely applied to farmland drainage and irrigation, industrial and mining enterprises, urban water supply and drainage, sewage treatment and the like. The deep well pump features that the motor and the pump are made into a vertical integral body, and the integral body has small diameter and straight rod.

In the prior art, the deep well pump comprises a motor and an impeller, an output shaft of the motor is in driving connection with the impeller, and a motor controller can be connected with and control the motor so as to control the motion state of the impeller.

SUMMERY OF THE UTILITY MODEL

The utility model provides a control unit and a driving structure of a deep well pump, and solves the technical problems that the deep well pump in the prior art is poor in heat dissipation capability and cannot operate for a long time. The technical scheme of the utility model is as follows:

a control unit for a deep well pump comprising:

the opening of the heat dissipation shell is hermetically connected with a partition plate, the inner wall of the heat dissipation shell is also provided with a heat dissipation plate, a control cavity is formed in the heat dissipation shell, and heat dissipation insulating oil is filled in the control cavity;

a controller fitted in the control chamber, the controller being fixed to the heat dissipation plate.

The controller is arranged in the heat dissipation shell, the control cavity is filled with heat dissipation insulating oil, the inner wall of the heat dissipation cavity is also provided with the heat dissipation plate, the controller is fixed on the heat dissipation plate and can be connected with the heat dissipation shell through the heat dissipation plate, and heat generated by the controller can be dissipated through the heat dissipation plate and the heat dissipation shell; in addition, the control cavity is filled with heat dissipation insulating oil, heat generated by the controller can be taken away, heat dissipation of the controller is facilitated, and the controller can operate for a long time. In addition, set up the heating panel in the heat dissipation shell, the controller is connected with the heating panel, more can protect controller inner member not receive external impact, increase of service life.

According to one embodiment of the utility model, the heat dissipation plate is at least two layers, at least two layers of heat dissipation plates are stacked on the inner wall of the heat dissipation shell from outside to inside, and the controller is fixed on the innermost layer of the heat dissipation plate.

According to one embodiment of the utility model, the controller is encapsulated in a mounting box by potting, and the mounting box is fixedly connected with the heat dissipation plate.

According to one embodiment of the utility model, the partition plate is welded with the heat dissipation shell in a sealing mode, and cables connected to the controller penetrate through the partition plate and extend out of the control cavity.

According to one embodiment of the utility model, a through hole for the cable to pass through is formed in the partition plate, a sealing protective coil is arranged in the through hole, a pressing plate is further fixed on the partition plate, the pressing plate can press the sealing protective coil, and glue is further filled on the partition plate to form a sealing layer.

According to one embodiment of the utility model, the heat sink insulating oil is a food grade heat sink insulating oil.

A drive structure for a deep well pump, comprising:

a control unit of the deep well pump;

the control unit is accommodated in the shell, the outer side wall of the heat dissipation shell is attached to the inner side wall of the shell, and a motor cavity is formed between the shell and the heat dissipation shell;

the motor is accommodated in the motor cavity and is electrically connected with the control unit through a cable.

According to one embodiment of the utility model, the motor cavity and the motor are filled with heat-dissipating insulating oil.

According to one embodiment of the utility model, the motor is a high-speed brushless submersible motor, the motor comprises a stator, a rotor and a motor shaft, the stator is fixed on the inner wall of the shell, the rotor is arranged on the inner periphery of the stator and fixedly connected with the motor shaft, two ends of the motor shaft are respectively connected with bearing blocks, the two bearing blocks are hermetically connected with the inner wall of the shell, and heat dissipation insulating oil is filled between the stator and the rotor and between the two bearing blocks.

According to one embodiment of the utility model, the motor cavity is located on one side of the control unit close to the partition plate, a heat dissipation cavity is reserved between the other side of the control unit and the shell, and heat dissipation insulating oil is contained in the heat dissipation cavity.

Based on the technical scheme, the utility model can realize the following technical effects:

1. according to the control unit of the deep well pump, the controller is arranged in the radiating shell, radiating insulating oil is filled in the control cavity, the radiating plate is further arranged on the inner wall of the radiating cavity, the controller is fixed on the radiating plate and can be connected with the radiating shell through the radiating plate, and heat generated by the controller can be radiated out through the radiating plate and the radiating shell; in addition, the control cavity is filled with heat dissipation insulating oil, heat generated by the controller can be taken away, heat dissipation of the controller is facilitated, and the controller can operate for a long time. In addition, the heat dissipation shell is internally provided with the heat dissipation plate, and the controller is connected with the heat dissipation plate, so that internal elements of the controller can be protected from external impact, and the service life is prolonged;

2. according to the control unit of the deep well pump, the heat dissipation plates are arranged in at least two layers, the at least two layers of heat dissipation plates are stacked on the inner wall of the heat dissipation shell, and the controller is fixed on the heat dissipation plate at the innermost layer, so that heat dissipation is facilitated; the controller is sealed in the assembly box by glue filling, and the assembly box is fixedly connected with the heat dissipation plate, so that on one hand, the sealed assembly of the controller can be ensured, and the heat dissipation insulating oil is prevented from entering the controller, and on the other hand, the controller is convenient to mount by fixing through the assembly box;

3. according to the control unit of the deep well pump, the partition plate and the heat dissipation plate can be sealed in a welding mode, so that the connection sealing property between the partition plate and the heat dissipation plate can be ensured; the through hole on the partition plate for the cable to pass through is also provided with a sealing protective coil and is tightly pressed by a sealing pressing plate, so that the sealing in the control cavity can be ensured under the condition of ensuring the electric connection between the motor and the controller; glue is poured on the partition plate to form a sealing glue layer, so that the sealing performance of the control cavity can be further ensured;

4. according to the driving structure of the deep-well pump, the heat dissipation shell is contained in the shell and is attached to the shell, so that heat on the heat dissipation shell can be directly transferred to the shell; the motor cavity and the motor are filled with heat dissipation insulating oil, so that the heat dissipation of the motor can be facilitated. A heat dissipation cavity is arranged between the control unit and the shell to contain heat dissipation insulating oil, so that the heat dissipation performance of the driving structure can be further enhanced.

Drawings

FIG. 1 is a schematic structural diagram of a control unit of the deep well pump of the present invention;

FIG. 2 is a schematic structural diagram of a heat dissipation housing and a heat dissipation plate thereon;

FIG. 3 is a schematic view of the structure of the separator;

FIG. 4 is a schematic diagram of the controller;

FIG. 5 is a schematic structural view of a drive structure of the deep well pump of the present invention;

in the figure: 1-a heat dissipation shell; 11-a separator; 111-a sealed shield coil; 112-a platen; 113-a fastener; 2-a heat sink; 21-outer heat sink; 22-inner heat sink; 3-heat dissipation insulating oil; 4-a controller; 41-a control panel; 42-an electronic component; 5-assembling a box; 51-sealant layer; 6-a cable; 61-an output line; 62-a power line; 7-a housing; 71-oil pocket; 72-a bottom cover; 8, a motor; 81-stator; 82-a rotor; 83-motor shaft; 84-upper bearing seat; 85-lower bearing seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 5, the present embodiment provides a control unit of a deep well pump, which includes a heat dissipation casing 1 and a controller 4, wherein the heat dissipation casing 1 has an open end, a partition plate 11 is hermetically disposed at the open end of the heat dissipation casing 1, the heat dissipation casing 1 and the partition plate 11 form a control cavity in a sealed manner, and the controller 4 is assembled in the control cavity.

The heat dissipation shell 1 is made of a heat dissipation material, the heat dissipation shell 1 is a cylindrical body with an opening at one end, and the opening is hermetically provided with a partition plate 11. In order to ensure the sealing performance of the control chamber, the partition plate 11 may be provided as a convex surface, and the partition plate 11 may be inserted into the opening of the heat dissipation case 1 and be sealed and welded with the inner wall of the heat dissipation case 1 to ensure the sealing performance of the opening of the heat dissipation case 1.

As a preferred technical solution of this embodiment, in order to facilitate the cable 6 connected to the controller 4 to extend out of the control chamber, a through hole for the cable 6 to extend out is formed on the partition plate 11, and a sealing protective coil 111 is provided in the through hole to ensure the sealing performance at the through hole. Preferably, in order to further ensure the sealing performance, a pressure plate 112 is further fixed on the partition 11, and the pressure plate 112 is fixed on the partition 11 through a fastener 113 to press the sealing grommet 111.

As a preferred technical solution of this embodiment, in order to improve the sealing performance, a sealing layer is further formed on the partition plate 11 by pouring glue, and the sealing layer covers the partition plate 11 and covers the pressing plate 112 to ensure that any gap is sealed, and impurities cannot enter the control cavity.

The controller 4 is mounted in the control chamber, the controller 4 includes a control board 41 and an electronic component 42 provided on the control board, and the controller 4 is mounted on an inner wall of the control chamber. In this embodiment, the controller 4 is mounted on the inner wall of the control chamber via a mounting box 5. Specifically, the controller 4 is accommodated in the assembly box 5, the insertion gap between the control board 41 and the electronic component 42 is also arranged in the assembly box 5, and then the sealing glue is poured to form the sealing glue layer 51, so that the insertion gaps between the control board 41, the control board 41 and the electronic component 42 are all wrapped by the sealing glue layer 51 to form a seal. The outer wall of the assembly box 5 is fixedly connected with the inner side wall of the heat dissipation shell 1. The sealing glue may be an epoxy glue.

As a preferable embodiment of the present invention, the heat dissipating plate 2 is provided on the inner side wall of the heat dissipating case 1, and the mounting case 5 is fixed to the heat dissipating plate 2. Specifically, the heat dissipation plate 2 may have at least two layers, and at least two layers of heat dissipation plates 2 are stacked on the inner side wall of the heat dissipation case 1 from inside to outside. In this embodiment, the heat dissipation plate 2 is provided with two layers, and includes an outer heat dissipation plate 21 and an inner heat dissipation plate 22, the outer heat dissipation plate 21 is fixed on the inner side wall of the heat dissipation case 1, and the inner heat dissipation plate 22 is fixed on the inner wall of the outer heat dissipation plate 21. The outer heat dissipation plate 21 and the inner heat dissipation plate 22 can be selected from, but not limited to, IGBT aluminum heat dissipation plates.

As a preferred solution of this embodiment, in order to ensure the heat dissipation shape, the control cavity is further filled with the heat dissipation insulating oil 3, and the electronic component 42 of the controller 4 protruding out of the sealant layer 51 can be in sufficient contact with the heat dissipation insulating oil 3 to perform the heat dissipation function. Preferably, the heat dissipation insulating oil 3 is food grade heat dissipation insulating oil.

Be connected with cable 6 on controller 4, cable 6 comprises many single strands, including output line 61 and power cord 62, and output line 61 is two, specifically is the direct current output line single strand, and power cord 62 is one, specifically is 220V power cord single strand. The cable 6 needs to penetrate through the partition board 11 to play a role in electric connection, the sealing protective coil 111 is arranged at the through hole of the partition board 11, the pressing plate 112 is arranged to press the sealing protective coil 111, and the arrangement of the single-strand wires can effectively achieve the effect that the inner part and the outer part do not leak through extrusion.

The embodiment also provides a driving structure of the deep well pump, which comprises the control unit of the deep well pump and a shell 7, wherein the control unit is contained in the shell 7, and a motor cavity is further arranged in the shell 7 and outside the heat dissipation shell 1 to contain a motor 8.

The shell 7 is in a hollow cylinder shape, openings are formed at two ends of the shell 7, an oil bag 71 is arranged at an opening at one end of the shell 7, the oil bag 71 is limited at the opening of the shell 7 through a bottom cover 72, the control unit is accommodated in the shell 7 and close to the oil bag 71, the heat dissipation shell 1 is connected with the inner wall of the shell 7 in an attaching mode, a heat dissipation cavity is formed between the control unit and the oil bag 71, and heat dissipation insulating oil 3 is filled in the heat dissipation cavity. The partition plate 11 is far away from the oil bag 71, and the outer side of the partition plate 11 forms a motor cavity.

The motor 8 is accommodated in the motor cavity, the motor 8 comprises a stator 81, a rotor 82 and a motor shaft 83, the stator 81 is fixed on the inner wall of the housing 7, the rotor 82 is positioned on the inner periphery of the stator 81 and is fixedly connected with the motor shaft 83, two ends of the motor shaft 83 are respectively and rotatably connected with two bearing seats, namely an upper bearing seat 84 and a lower bearing seat 85, the upper bearing seat 84 is hermetically connected at an opening at the other end of the housing 7, which is far away from the oil bag 71, the lower bearing seat 85 is assembled on the inner wall of the housing 7, and the upper bearing seat 84, the housing 7 and the oil bag 71 can be matched to form a relatively sealed space. The motor 8 is preferably a high speed brushless submersible motor and the control board 41 is a permanent magnet brushless control board.

As the preferred technical scheme of this embodiment, the motor cavity and the motor are filled with heat dissipation insulating oil 3. Specifically, the heat-dissipating insulating oil 3 is filled between the lower bearing seat 85 and the partition plate 11, between the lower bearing seat 85 and the stator 81, between the rotor 82, and between the stator 81, the rotor 82, and the upper bearing seat 84. The heat dissipation insulating oil 3 is preferably food grade heat dissipation insulating oil.

Based on the structure, when the driving structure of the deep-well pump is applied to the deep-well pump, the sealing property and the heat dissipation effect of the control cavity are good, the driving structure can adapt to deeper depth and can operate for a long time; all be full of heat dissipation insulating oil in motor chamber and the motor, then the holistic good heat dissipation of drive structure can operate for a long time.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A control unit for a deep well pump, comprising:

the heat dissipation device comprises a heat dissipation shell (1), wherein a partition plate (11) is hermetically connected to an opening of the heat dissipation shell (1), a heat dissipation plate (2) is further arranged on the inner wall of the heat dissipation shell (1), a control cavity is formed in the heat dissipation shell (1), and heat dissipation insulating oil (3) is filled in the control cavity;

a controller (4), wherein the controller (4) is assembled in the control cavity, and the controller (4) is fixed on the heat dissipation plate (2).

2. The control unit of a deep well pump according to claim 1, characterized in that the heat dissipation plate (2) has at least two layers, at least two layers of heat dissipation plates (2) are stacked on the inner wall of the heat dissipation casing (1) from outside to inside, and the controller (4) is fixed on the innermost layer of the heat dissipation plate (2).

3. The control unit of a deep well pump according to any of claims 1-2, characterized in that the controller (4) is encapsulated in a mounting box (5) by potting, the mounting box (5) being fixedly connected to the heat sink (2).

4. The control unit of a deep well pump according to claim 1, characterized in that the partition (11) is hermetically welded to the heat dissipating casing (1), and a cable (6) connected to the controller (4) extends through the partition (11) to the outside of the control chamber.

5. The control unit of a deep well pump according to claim 4, characterized in that the partition plate (11) is provided with a through hole for the cable (6) to pass through, a sealing protective coil (111) is arranged in the through hole, the partition plate (11) is further fixed with a pressing plate (112), the pressing plate (112) can press the sealing protective coil (111), and the partition plate (11) is further filled with glue to form a sealing layer.

6. The control unit of a deep well pump according to claim 1, characterized in that the heat sink insulating oil (3) is a food grade heat sink insulating oil.

7. A drive structure of a deep well pump, comprising:

a control unit of the deep well pump according to any one of claims 1 to 6;

the control unit is accommodated in the shell (7), the outer side wall of the heat dissipation shell (1) is attached to the inner side wall of the shell (7), and a motor cavity is formed in the shell (7);

the motor (8), motor (8) hold in the motor chamber, motor (8) with the control unit passes through cable (6) electricity and connects.

8. A drive arrangement for a deep-well pump according to claim 7, characterized in that the motor chamber and the motor are filled with heat-dissipating insulating oil (3).

9. The driving structure of a deep-well pump according to claim 8, characterized in that the motor (8) is a high-speed brushless submersible motor, the motor (8) comprises a stator (81), a rotor (82) and a motor shaft (83), the stator (81) is fixed on the inner wall of the casing (7), the rotor (82) is arranged on the inner periphery of the stator (81) and is fixedly connected with the motor shaft (83), two ends of the motor shaft (83) are respectively connected with bearing seats (84, 85), the two bearing seats (84, 85) are hermetically connected with the inner wall of the casing (7), and heat-dissipating insulating oil (3) is filled between the stator (81), the rotor (82) and the two bearing seats (84, 85).

10. The drive structure of a deep well pump according to claim 7, characterized in that the motor cavity is located on one side of the control unit close to the partition (11), a heat dissipation cavity is located between the other side of the control unit and the casing (7), and heat dissipation insulating oil (3) is contained in the heat dissipation cavity.