QY oil-immersed submersible electric pump

Abstract

The bottom of the QY oil-immersed submersible electric pump is provided with a power assembly, and the top of the QY oil-immersed submersible electric pump is provided with a water inlet, an impeller part and a water outlet; the power assembly comprises a shell and a heat dissipation assembly, a motor cavity is formed in the shell, a motor winding and a rotor are arranged in the motor cavity, and motor oil is arranged in the motor cavity; the heat dissipation assembly is a heat dissipation pipe arranged on the side portion of the shell, and the two ends of the heat dissipation pipe communicate with the top and the bottom of the motor cavity correspondingly. According to the utility model, the external heat dissipation pipe is arranged, and motor oil can circulate on the outer side along the heat dissipation pipe, so that the effects of sufficient heat dissipation and cooling are achieved, and the influence on the operation of the motor caused by volume expansion of the motor oil due to higher temperature of the motor due to long-time operation is avoided. An outer cover is arranged outside the radiating pipe. The outer cover can effectively avoid collision, and the purpose of protecting the motor and the radiating pipe is achieved. The submersible pump is good in heat dissipation performance and can effectively guarantee normal operation of the motor, and therefore the purpose of prolonging the service life of the submersible pump is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible pumps, in particular to a QY oil-immersed submersible electric pump. Background Art

[0002] An oil-immersed submersible pump is a special type of submersible pump that combines a pump and an electric motor and is designed to work underwater. An oil-immersed submersible pump consists of three parts: a water pump, a seal, and an electric motor. The water pump is usually located at the top and is a centrifugal or axial flow structure, while the electric motor is located at the bottom and is an oil-filled three-phase asynchronous motor.

[0003] Oil-immersed submersible pumps require mechanical lubricating oil to be filled in the motor cavity. As the motor runs longer, the oil temperature rises rapidly, and the volume expands, which can easily cause the motor to explode. If the motor cavity is not filled with oil, the lubrication condition of the motor bearing will deteriorate, which will also burn the motor. Utility Model Content

[0004] The purpose of the utility model is to overcome the above problems and provide a QY oil-immersed submersible electric pump. To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A QY oil-immersed submersible electric pump, with a power assembly at the bottom and a water inlet, an impeller and a water outlet at the top;

[0006] The power assembly includes a shell and a heat dissipation assembly. A motor cavity is provided inside the shell. A motor winding and a rotor are provided inside the motor cavity. Motor oil is provided inside the motor cavity. The heat dissipation assembly is a heat dissipation pipe provided on the side of the shell. Both ends of the heat dissipation pipe are respectively connected to the top and bottom of the motor cavity.

[0007] As an improvement, the top of the heat dissipation pipe extends obliquely upward, and the end is connected to the bottom of the motor cavity after being smoothly bent.

[0008] As an improvement, the heat dissipation pipes are multiple in number and are arranged in a circular array around the side wall of the shell.

[0009] As an improvement, an outer cover for protecting the heat dissipation pipe is provided outside the shell, and two ends of the outer cover are fixedly connected to the top and bottom of the shell through connecting rods respectively.

[0010] As an improvement, the outer cover is provided with a plurality of heat dissipation holes.

[0011] As an improvement, a water inlet cover net is provided on the outside of the water inlet.

[0012] As an improvement, a power line for supplying power to the power assembly is provided on one side of the water inlet.

[0013] The advantages of the utility model are:

[0014] 1. The utility model is provided with an external heat dissipation pipe, and the motor oil can circulate on the outside along the heat dissipation pipe, so as to achieve the effect of sufficient heat dissipation and cooling, and avoid the high temperature of the motor due to long-term operation, which causes the volume expansion of the motor oil and affects the operation of the motor.

[0015] 2. The utility model has an outer cover outside the heat dissipation pipe, which can effectively avoid collision and protect the motor and the heat dissipation pipe.

[0016] 3. The utility model has good heat dissipation performance, which can effectively ensure the normal operation of the motor, thereby achieving the purpose of increasing the service life of the submersible pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a QY oil-immersed submersible electric pump in Example 1.

[0018] Figure 2 This is a diagram of the internal structure of the casing of a QY oil-immersed submersible electric pump in Example 1.

[0019] Indicated in the figure:

[0020] 1-power assembly, 11-housing, 12-motor cavity, 13-motor winding, 14-rotor, 2-water inlet, 21-water inlet cover, 22-power line, 3-impeller, 4-water outlet, 5-heat dissipation assembly, 51-heat dissipation pipe, 6-outer cover, 61-connecting rod, 62-heat dissipation hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of the present invention, "multiple" means at least 2.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, they can be fixedly connected or can be connected in a fixed manner.

[0026] The connection may be detachable or integral; it may be mechanical or electrical; it may be directly connected or indirectly connected through an intermediate medium, or it may be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] Example 1

[0028] This embodiment discloses a QY oil-immersed submersible electric pump, which has a power assembly 1 at the bottom, and a water inlet 2, an impeller 3 and a water outlet 4 at the top. A water inlet cover 21 is provided outside the water inlet 2. A power line 22 for supplying power to the power assembly 1 is provided on one side of the water inlet 2.

[0029] The power assembly 1 includes a housing 11 and a heat dissipation assembly 5 . A motor cavity 12 is provided inside the housing 1 . A motor winding 13 and a rotor 14 are provided inside the motor cavity 12 . Motor oil is provided inside the motor cavity 12 .

[0030] The heat dissipation component 5 is a heat dissipation pipe 51 disposed on the side of the housing 11 , and two ends of the heat dissipation pipe 51 are respectively connected to the top and the bottom of the motor cavity 12 .

[0031] The top of the heat dissipation pipe 51 extends obliquely upward, and after being smoothly bent, the end is connected to the bottom of the motor cavity 12. There are multiple heat dissipation pipes 51, which are arranged in a circular array around the side wall of the housing 11.

[0032] An outer cover 6 for protecting the heat dissipation pipe is disposed outside the housing 11, and two ends of the outer cover 6 are respectively fixedly connected to the top and bottom of the housing 11 through connecting rods 61. The outer cover 6 is provided with a plurality of heat dissipation holes 62.

[0033] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modification and substitution of the present invention is also within the scope of the present invention. Therefore, the equivalent transformation and modification made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A QY oil-immersed submersible electric pump, It is characterized in that The bottom is provided with a power assembly, and the top is provided with a water inlet, an impeller part and a water outlet; The power assembly includes a shell and a heat dissipation assembly. A motor cavity is provided inside the shell. A motor winding and a rotor are provided inside the motor cavity. Motor oil is provided inside the motor cavity. The heat dissipation assembly is a heat dissipation pipe provided on the side of the shell. Both ends of the heat dissipation pipe are respectively connected to the top and bottom of the motor cavity.

2. A QY oil-immersed submersible electric pump according to claim 1, It is characterized in that The top of the heat dissipation pipe extends obliquely upward, and the end is connected to the bottom of the motor cavity after being smoothly bent.

3. A QY oil-immersed submersible electric pump according to claim 1, It is characterized in that The heat dissipation pipes are in multiple numbers and arranged in a circular array around the side wall of the shell.

4. A QY oil-immersed submersible electric pump according to claim 1, It is characterized in that An outer cover for protecting the heat dissipation pipe is arranged outside the shell, and two ends of the outer cover are fixedly connected to the top and bottom of the shell through connecting rods respectively.

5. A QY oil-immersed submersible electric pump according to claim 4, It is characterized in that The outer cover is provided with a plurality of heat dissipation holes.

6. A QY oil-immersed submersible electric pump according to claim 1, It is characterized in that A water inlet cover net is arranged outside the water inlet.

7. A QY oil-immersed submersible electric pump according to claim 1, It is characterized in that A power line for supplying power to the power component is provided on one side of the water inlet.

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