A deep well pump and its motor

Abstract

The present invention discloses a deep well pump and its motor, the motor comprising: a motor body and at least two valve bodies installed on the motor body, the valve body is provided with a chamber, one end of the chamber is connected with an internal cooling circulation flow path inside the motor, and the other end is connected with an external cooling circulation flow path outside the motor; a sealing structure is movably provided in the chamber. During use, the motor of the present invention can adjust the pressure inside and outside the motor by moving the sealing structure in the valve body, without the need to additionally set up an oil bag structure, and during use, the pressure inside and outside the motor is directly adjusted by the flow of the medium in the external cooling circulation flow path and the internal cooling circulation flow path, the adjustment process is convenient, and when the motor is installed in the deep well pump, the structure of the deep well pump can be simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumping equipment, and more specifically, to a motor. In addition, the present invention also relates to a deep well pump comprising the motor. Background Art

[0002] The working environment of deep well pumps is mostly deep underwater, where the water pressure is high. Deep well pumps are easily damaged when exposed to such pressure, so a device is needed to balance the internal pressure.

[0003] In the prior art, in order to adjust the internal and external pressures of a deep well pump when working underwater, an oil bladder structure is generally provided. The pressure during the operation of the deep well pump is adjusted by changing the volume of the oil bladder structure. However, this adjustment method requires the additional provision of an oil bladder structure, which makes the structure of the deep well pump complicated.

[0004] In summary, how to simplify the structure of the deep well pump while adjusting the internal and external pressures of the deep well pump motor is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a motor which, during use, can change the media in the external cooling circulation flow path and the internal cooling circulation flow path from a separated state to a connected state by applying pressures in different directions to the sealing structure when the pressures inside and outside the motor are different, thereby adjusting the pressures inside and outside the motor; there is no need to additionally set up an oil bag structure, the adjustment process is convenient, and when the motor is installed in a deep well pump, the structure of the deep well pump can be simplified.

[0006] In addition, the present invention also provides a deep well pump comprising the above motor.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A motor, comprising: a motor body and at least two valve bodies mounted on the motor body, the valve body being provided with a chamber, one end of the chamber being communicated with an inner cooling circulation flow path inside the motor, and the other end of the chamber being communicated with an outer cooling circulation flow path outside the motor;

[0009] A sealing structure is movably provided in the chamber, and when the pressure of the inner cooling circulation flow path is greater than the pressure of the outer cooling circulation flow path, at least one of the sealing structures moves to allow the coolant in the inner cooling circulation flow path to enter the outer cooling circulation flow path;

[0010] When the pressure of the outer cooling circulation flow path is greater than the pressure of the inner cooling circulation flow path, at least one of the sealing structures moves to allow the coolant in the outer cooling circulation flow path to enter the inner cooling circulation flow path;

[0011] When the pressure of the outer cooling circulation flow path is equal to the pressure of the inner cooling circulation flow path, the sealing structure seals one end of the chamber to isolate the inner cooling circulation flow path from the outer cooling circulation flow path.

[0012] Preferably, the sealing structure includes a sealing component and an elastic structure providing sealing force for the sealing component.

[0013] Preferably, the sealing component is a sealing ball or a sealing cone.

[0014] Preferably, a valve cover is provided in the valve body, and the elastic structure is a spring, one end of the spring abuts against the valve cover, and the other end is connected to the sealing component.

[0015] Preferably, the valve cover is provided with a stepped hole for fixing the spring, and one end of the spring is located in the stepped hole.

[0016] Preferably, the sealing component is provided with a protrusion at one end facing the spring, and the spring is sleeved on the outer periphery of the protrusion.

[0017] Preferably, the number of the valve bodies is two, and the two valve bodies are arranged adjacent to each other.

[0018] A deep well pump comprises the above motor.

[0019] In the process of using the motor provided by the present invention, when the pressure of the external cooling circulation flow path is equal to the pressure of the internal cooling circulation flow path, the sealing structure seals one end of the chamber to isolate the internal cooling circulation flow path from the external cooling circulation flow path; when the pressure of the external cooling circulation flow path is greater than the pressure of the internal cooling circulation flow path, at least one sealing structure moves to connect the internal cooling circulation flow path with the external cooling circulation flow path, and the cooling medium in the external cooling pipeline flows into the internal cooling circulation flow path until the pressure of the external cooling circulation flow path is equal to the pressure of the internal cooling circulation flow path; when the pressure of the internal cooling circulation flow path is greater than the pressure of the external cooling circulation flow path, at least one sealing structure moves to connect the internal cooling circulation flow path with the external cooling circulation flow path, and the cooling medium in the internal cooling circulation flow path flows into the external cooling circulation flow path until the pressure of the external cooling circulation flow path is equal to the pressure of the internal cooling circulation flow path.

[0020] Compared with the prior art, the motor in the present invention can adjust the pressure inside and outside the motor by moving the sealing structure in the valve body during use, without the need for an additional oil bag structure. In addition, the pressure inside and outside the motor can be adjusted directly by the flow of the medium in the external cooling circulation flow path and the internal cooling circulation flow path during use. The adjustment process is convenient, and when the motor is installed in a deep well pump, the structure of the deep well pump can be simplified.

[0021] In addition, the present invention also provides a deep well pump comprising the above motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 This is a schematic structural diagram of a specific embodiment of the motor provided by the present invention.

[0024] Figure 1 middle:

[0025] 1 is a valve body, 2 is a valve cover, 3 is an external cooling circulation flow path, 4 is an internal cooling circulation flow path, 5 is a spring, and 6 is a sealing ball. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The core of the present invention is to provide a motor, which can adjust the pressure inside and outside the motor by changing the direction of the pressure acting on the sealing structure when the pressure inside and outside the motor is different, so that the medium in the outer cooling circulation flow path and the inner cooling circulation flow path changes from a partitioned state to a connected state; no additional oil bag structure is required, and the adjustment process is convenient. When the motor is installed in a deep well pump, the structure of the deep well pump can be simplified. Another core of the present invention is to provide a deep well pump including the above motor.

[0028] Please refer to Figure 1 , Figure 1 This is a schematic structural diagram of a specific embodiment of the motor provided by the present invention.

[0029] This specific embodiment provides a motor, comprising: a motor body and at least two valve bodies 1 installed on the motor body, the valve body 1 is provided with a chamber, one end of the chamber is connected to an inner cooling circulation flow path 4 inside the motor, and the other end is connected to an outer cooling circulation flow path 3 outside the motor;

[0030] A sealing structure is movably provided in the chamber, and when the pressure of the inner cooling circulation flow path 4 is greater than the pressure of the outer cooling circulation flow path 3, at least one sealing structure moves to connect the inner cooling circulation flow path 4 with the outer cooling circulation flow path 3, and the coolant in the inner cooling circulation flow path 4 enters the outer cooling circulation flow path 3;

[0031] When the pressure of the outer cooling circulation flow path 3 is greater than the pressure of the inner cooling circulation flow path 4, at least one sealing structure moves to connect the inner cooling circulation flow path 4 with the outer cooling circulation flow path 3, and the coolant in the outer cooling circulation flow path 3 enters the inner cooling circulation flow path 4;

[0032] When the pressure of the outer cooling circulation flow path 3 is equal to the pressure of the inner cooling circulation flow path 4 , the sealing structure seals one end of the chamber to isolate the inner cooling circulation flow path 4 from the outer cooling circulation flow path 3 .

[0033] In the process of using the motor provided by this specific embodiment, when the pressure of the outer cooling circulation flow path 3 is equal to the pressure of the inner cooling circulation flow path 4, the sealing structure seals one end of the chamber to isolate the inner cooling circulation flow path 4 from the outer cooling circulation flow path 3; when the pressure of the outer cooling circulation flow path 3 is greater than the pressure of the inner cooling circulation flow path 4, at least one sealing structure moves to connect the inner cooling circulation flow path 4 with the outer cooling circulation flow path 3, and the cooling medium in the outer cooling pipeline flows into the inner cooling circulation flow path 4 until the pressure of the outer cooling circulation flow path 3 is equal to the pressure of the inner cooling circulation flow path 4, and the sealing mechanism moves to a state in which the chamber is sealed; when the pressure of the inner cooling circulation flow path 4 is greater than the pressure of the outer cooling circulation flow path 3, at least one sealing structure moves to connect the inner cooling circulation flow path 4 with the outer cooling circulation flow path 3, and the cooling medium in the inner cooling circulation flow path 4 flows into the outer cooling circulation flow path 3 until the pressure of the outer cooling circulation flow path 3 is equal to the pressure of the inner cooling circulation flow path 4, and the sealing mechanism moves to a state in which the chamber is sealed.

[0034] Compared with the prior art, during use, the motor in this specific embodiment can adjust the pressure inside and outside the motor by moving the sealing structure in the valve body 1, without the need for an additional oil bag structure. During use, the pressure inside and outside the motor can be adjusted directly by the flow of the medium in the external cooling circulation path 3 and the internal cooling circulation path 4. The adjustment process is convenient. When the motor is installed in a deep well pump, the structure of the deep well pump can be simplified.

[0035] On the basis of the above embodiments, the sealing structure may include a sealing component and an elastic structure providing sealing force for the sealing component.

[0036] During use, the sealing component is used to seal one end of the chamber, and the elastic deformation force of the elastic structure provides sealing force for the sealing component to prevent the sealing component from destroying the sealing effect under a small unexpected external force, thereby ensuring the sealing quality.

[0037] Preferably, the sealing component can be configured as a sealing ball 6 or a sealing cone.

[0038] Preferably, a valve cover 2 may be provided in the valve body 1 , and the elastic structure is a spring 5 , one end of the spring 5 abuts against the valve cover 2 , and the other end is connected to the sealing component.

[0039] In order to facilitate the fixing of the spring 5, a stepped hole for fixing the spring 5 can be provided in the valve cover 2, and one end of the spring 5 is located in the stepped hole, such as Figure 1 As shown, the lower aperture of the stepped hole in the right chamber is larger than the upper aperture, and the outer diameter of the spring 5 is smaller than the lower aperture of the stepped hole and larger than the upper aperture of the stepped hole, so that one end of the spring 5 abuts against the upper stepped hole. The lower aperture of the stepped hole in the left chamber is smaller than the upper aperture, and the outer diameter of the spring 5 is smaller than the upper aperture of the stepped hole and larger than the lower aperture of the stepped hole, so that one end of the spring 5 abuts against the lower stepped hole.

[0040] The sealing component is provided with a protrusion at one end facing the spring 5 , and the spring 5 is sleeved on the outer periphery of the protrusion.

[0041] like Figure 1 As shown, there are two valve bodies 1, and the two valve bodies 1 are arranged adjacent to each other. The valve cover 2 of the left valve body 1 is arranged at the lower part. When the pressure of the external cooling circulation path 3 is equal to the pressure of the internal cooling circulation path 4, the sealing ball 6 in the left valve body 1 contacts with the opening of the upper part of the valve body 1 under the action of the elastic force of the spring 5, and seals the opening of the upper part of the left valve body 1; the valve cover 2 of the right valve body 1 is arranged at the upper part. When the pressure of the external cooling circulation path 3 is equal to the pressure of the internal cooling circulation path 4, the sealing ball 6 in the right valve body 1 contacts with the opening of the lower part of the valve body 1 under the action of the elastic force of the spring 5, and seals the opening of the upper part of the right valve body 1.

[0042] When the pressure of the external cooling circulation flow path 3 is greater than the pressure of the internal cooling circulation flow path 4, the downward pressure acting on the sealing ball 6 in the right valve body 1 causes the sealing ball 6 in the right valve body 1 to further seal the opening at the lower part of the valve body 1; the downward pressure acting on the sealing ball 6 in the left valve body 1 causes the sealing ball 6 in the left valve body 1 to overcome the elastic force of the spring 5 and move downward, so that the external cooling circulation flow path 3 is connected with the internal cooling circulation flow path 4, and the coolant in the external cooling circulation flow path 3 enters the internal cooling circulation flow path 4, until the pressure of the external cooling circulation flow path 3 is equal to the pressure of the internal cooling circulation flow path 4, then the sealing ball 6 in the left valve body 1 moves upward under the action of the elastic force of the spring 5 to seal the opening at the upper part of the left valve body 1.

[0043] When the pressure of the external cooling circulation flow path 3 is lower than the pressure of the internal cooling circulation flow path 4, the upward pressure acting on the sealing ball 6 in the left valve body 1 causes the sealing ball 6 in the left valve body 1 to further seal the opening at the top of the valve body 1; the upward pressure acting on the sealing ball 6 in the right valve body 1 causes the sealing ball 6 in the right valve body 1 to overcome the elastic force of the spring 5 and move upward, so that the external cooling circulation flow path 3 is connected to the internal cooling circulation flow path 4, and the coolant in the internal cooling circulation flow path 4 enters the external cooling circulation flow path 3, until the pressure of the external cooling circulation flow path 3 is equal to the pressure of the internal cooling circulation flow path 4, then the sealing ball 6 in the right valve body 1 moves downward under the elastic force of the spring 5 to seal the opening at the bottom of the right valve body 1.

[0044] In addition to the above-mentioned motor, the present invention also provides a deep well pump including the motor disclosed in the above-mentioned embodiment. For the structures of other parts of the deep well pump, please refer to the prior art and will not be described in detail herein.

[0045] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0046] The deep well pump and its motor provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A motor, characterized in that: include: A motor body and at least two valve bodies (1) mounted on the motor body, the valve body (1) being provided with a chamber, one end of the chamber being in communication with an internal cooling circulation flow path (4) inside the motor, and the other end of the chamber being in communication with an external cooling circulation flow path (3) outside the motor; A sealing structure is movably provided in the chamber, and when the pressure of the inner cooling circulation flow path (4) is greater than the pressure of the outer cooling circulation flow path (3), at least one of the sealing structures moves to allow the coolant in the inner cooling circulation flow path (4) to enter the outer cooling circulation flow path (3); When the pressure of the outer cooling circulation flow path (3) is greater than the pressure of the inner cooling circulation flow path (4), at least one of the sealing structures moves to allow the coolant in the outer cooling circulation flow path (3) to enter the inner cooling circulation flow path (4); When the pressure of the outer cooling circulation flow path (3) is equal to the pressure of the inner cooling circulation flow path (4), the sealing structure seals one end of the chamber so that the inner cooling circulation flow path (4) is isolated from the outer cooling circulation flow path (3).

2. The motor according to claim 1, characterized in that The sealing structure includes a sealing component and an elastic structure providing a sealing force for the sealing component.

3. The motor according to claim 2, characterized in that The sealing component is a sealing ball (6) or a sealing cone.

4. The motor according to claim 2, characterized in that A valve cover (2) is arranged in the valve body (1); the elastic structure is a spring (5); one end of the spring (5) abuts against the valve cover (2) and the other end is connected to the sealing component.

5. The motor according to claim 4, characterized in that The valve cover (2) is provided with a stepped hole for fixing the spring (5), and one end of the spring (5) is located in the stepped hole.

6. The motor according to claim 4, characterized in that The sealing component is provided with a protrusion at one end facing the spring (5), and the spring (5) is sleeved on the outer periphery of the protrusion.

7. The motor according to any one of claims 1 to 6, characterized in that: The number of the valve bodies (1) is two, and the two valve bodies (1) are arranged adjacent to each other.

8. A deep well pump, characterized in that: A motor comprising any one of claims 1 to 7.

Images