Submersible motor built into the controller

Abstract

The present invention relates to a submersible motor with a built-in controller. This solves existing problems such as insufficient submersible depth, low power, and controller contact with oil or water within the motor, which affects normal operation. The technical solution employed is to provide an intermediate pressure-regulating mechanism between the motor body and the controller, isolating the motor body from the controller. The intermediate pressure-regulating mechanism effectively isolates the motor body from the controller by limiting contact with air and preventing contact with water or oil, thus protecting the controller from the effects of high-temperature water or oil. Furthermore, the pressure regulation by the intermediate pressure-regulating mechanism increases the submersible motor's submersible depth during operation, increasing the motor's power to over ten kilowatts.

Description

Technical Field

[0001] The invention relates to a submersible motor, in particular to a submersible motor with a built-in controller. Background Art

[0002] Currently, submersible motors (such as those used in wells) consist of a motor body, a controller directly connected to one end of the motor body, and a bottom adjustment mechanism located at the bottom of the controller. The motor body houses a rotor, which is surrounded by a shielding sleeve. The shielding sleeve isolates the stator windings and controller from the outside of the shielding sleeve. Only the rotor inside the shielding sleeve is submerged in water, while the stator windings and controller are shielded from water and surrounded by air. When operating, the stator windings generate heat, which in turn affects the controller, potentially damaging it.

[0003] In addition, there are oil-filled submersible motors, where the oil in the motor covers the controller, which is used to regulate the pressure. The power of this motor can only reach a few kilowatts. The depth of deep diving is affected, and the deep diving depth is not deep enough, so it is only suitable for small well pumps. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide a submersible motor with a built-in controller. An intermediate pressure regulating mechanism is added between the motor body and the controller so that the controller is only in contact with air and not with water or oil, thereby avoiding the influence of high-temperature water or oil. Moreover, by adjusting the pressure through the intermediate pressure regulating mechanism, the depth of the submersible motor in water during use is increased, so that the power of the motor can be increased to more than ten kilowatts.

[0005] The above technical objectives of the present invention are primarily achieved through the following technical solution: a submersible motor with a built-in controller comprises a motor body, a controller disposed at one end of the motor body for controlling the motor body, and a bottom adjustment mechanism disposed at the bottom of the controller. The invention is characterized in that an intermediate pressure regulating mechanism is disposed between the motor body and the controller, isolating the motor body from the controller. The intermediate pressure regulating mechanism between the motor body and the controller allows the controller to be exposed only to air, not water or oil, thereby protecting it from the effects of high-temperature water or oil. Furthermore, the pressure regulation by the intermediate pressure regulating mechanism increases the submersible motor's submersible depth during use, thereby increasing the motor's power to over ten kilowatts.

[0006] As a further improvement and supplement to the above technical solution, the present invention adopts the following technical measures:

[0007] The intermediate pressure regulating mechanism includes a connecting tube, an intermediate pressure regulating component disposed within the inner cavity of the connecting tube, a lead sleeve disposed on the connecting tube, an epoxy colloid filled within the lead sleeve, the epoxy colloid filling the gap between the lead sleeve and the lead wire, a sealed fit between the lead sleeve and the connecting tube, one end of the connecting tube sealedly fitting with the motor housing on the motor body, and the other end sealedly fitting with the controller housing. The intermediate pressure regulating mechanism is sealed from surrounding mating components, the lead sleeve is sealedly fitted with the connecting tube, and the lead wire is sealedly fitted with the lead sleeve, enabling the pressure regulating component to smoothly regulate the pressure in the motor cavity and the pressure in the controller cavity.

[0008] The inner wall of the connecting cylinder and the outer wall of the intermediate pressure regulating component form a detachable fixed connection.

[0009] A convex ring is provided on the inner wall of the connecting tube, and a concave ring is provided on the outer wall of the intermediate pressure regulating piece. The convex ring and the concave ring cooperate to form a detachable fixed connection between the connecting tube and the intermediate pressure regulating piece.

[0010] The end of the intermediate pressure regulating member facing the controller forms an axial limiting fit with the connecting cylinder through a retaining ring.

[0011] The intermediate pressure regulating member includes a pressure regulating membrane with an open end, a pressure regulating cover arranged at the open end of the pressure regulating membrane, an outward folding edge arranged on the pressure regulating cover, the end wall of the intermediate pressure regulating member abuts against the outward folding edge, and the retaining ring is pressed on the outward folding edge.

[0012] A convex ring is provided on the outer wall of the connecting cylinder, and the end of the motor housing and the end of the controller housing respectively abut against the two annular surfaces of the convex ring. A sealing fit is formed between the outer wall of the connecting cylinder located on both sides of the convex ring and the motor housing, and between the outer wall of the connecting cylinder and the inner wall of the controller housing through sealing rings.

[0013] In order to facilitate the connection between the leads of the motor body and the leads of the controller, one end of the lead sleeve is communicated with the circuit channel in the motor body, and the other end of the lead sleeve is communicated with the circuit channel in the controller.

[0014] In order to smoothly adjust the pressure, the intermediate pressure regulating member is a bowl-shaped, flared rubber pressure regulating membrane.

[0015] In order to improve the pressure regulating ability of the intermediate pressure regulating part and increase its service life, the closed end of the intermediate pressure regulating part has a first outward convex ring, the cross-section of the first outward convex ring is a V-shape rotated 90 degrees, the bottom of the V-shape faces the motor body, and the open end of the V-shape faces the controller, and the inner cavity of the first outward convex ring is an integrated structure with the inner cavity of the intermediate pressure regulating part; the closed end of the pressure regulating cover has a second outward convex ring, the cross-section of the second outward convex ring is a V-shape rotated 90 degrees, the bottom of the V-shape faces the motor body, and the open end of the V-shape faces the controller, and the inner cavity of the second outward convex ring is connected to the outer wall space of the pressure regulating cover.

[0016] The present invention has the beneficial effects of adding an intermediate pressure regulating mechanism between the motor body and the controller, so that the controller is only in contact with air and not in contact with water or oil, thereby avoiding the influence of high-temperature water or oil. Moreover, by adjusting the pressure through the intermediate pressure regulating mechanism, the depth of the submersible motor submerged in water during use is increased, so that the power of the motor can be increased to more than ten kilowatts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional view of the present invention.

[0018] Figure 2 yes Figure 1 Schematic diagram of the local structure.

[0019] Figure 3 It is a structural diagram of the intermediate pressure regulating mechanism in the present invention.

[0020] Figure 4 yes Figure 3 Another visual diagram of the structure.

[0021] Figure 5 It is a schematic diagram of the explosion structure of the intermediate pressure regulating mechanism in the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Example: Figure 1-5As shown, a submersible motor with a built-in controller comprises a motor body 1, a controller 2 for controlling the motor body and disposed at one end of the motor body, and a bottom adjustment mechanism 3 disposed at the bottom of the controller. An intermediate pressure regulating mechanism 4 is disposed between the motor body and the controller to isolate the motor body from the controller. The motor body is filled with oil or water, and the intermediate pressure regulating mechanism is added between the motor body and the controller, ensuring that the controller is exposed only to air and not to water or oil, thus protecting it from the effects of high-temperature water or oil. Furthermore, the pressure regulation by the intermediate pressure regulating mechanism increases the submersible motor's submersible depth during operation, increasing the motor's power to over ten kilowatts.

[0024] The intermediate pressure regulating mechanism includes a connecting tube 41, an intermediate pressure regulating component disposed within the inner cavity of the connecting tube, a lead sleeve 43 disposed on the connecting tube, an epoxy colloid filled within the lead sleeve, the epoxy colloid filling the gap between the lead sleeve and the lead 5, a sealed fit between the lead sleeve and the connecting tube, one end of the connecting tube sealed with the motor housing on the motor body, and the other end sealed with the controller housing. The intermediate pressure regulating mechanism is sealed with surrounding mating components, the lead sleeve is sealed with the connecting tube, and the lead is sealed with the lead sleeve, enabling the pressure regulating component to smoothly regulate the pressure in the motor cavity and the pressure in the controller cavity.

[0025] The inner wall of the connecting tube forms a detachable fixed connection with the outer wall of the intermediate pressure regulating member. A preferred solution is to provide a raised ring 41-1 on the inner wall of the connecting tube and a recessed ring 42-1 on the outer wall of the intermediate pressure regulating member. The raised ring and recessed ring cooperate to form a detachable fixed connection between the connecting tube and the intermediate pressure regulating member.

[0026] The end of the intermediate pressure regulating member facing the controller forms an axially limited fit with the connecting tube via a retaining ring 6. The retaining ring 6 is a ring with a broken edge. During assembly, the ring is radially compressed and then pressed into the connecting tube. Once in place, the ring returns to its original position and is clamped between the intermediate pressure regulating member and the connecting tube.

[0027] The intermediate pressure regulating member includes a pressure regulating membrane 42 with an open end, a pressure regulating cover 44 arranged at the open end of the pressure regulating membrane, an outward folding edge 44-1 is provided on the pressure regulating cover, the end wall of the intermediate pressure regulating member abuts against the outward folding edge, and the retaining ring 6 presses on the outward folding edge.

[0028] A convex ring 41-2 is provided on the outer wall of the connecting cylinder, and the end of the motor housing and the end of the controller housing respectively contact the two annular surfaces of the convex ring. A sealing fit is formed between the outer wall of the connecting cylinder located on both sides of the convex ring and the motor housing, and between the outer wall of the connecting cylinder and the inner wall of the controller housing through sealing rings 7.

[0029] In order to facilitate the connection between the leads of the motor body and the leads of the controller, one end of the lead sleeve is communicated with the circuit channel in the motor body, and the other end of the lead sleeve is communicated with the circuit channel in the controller.

[0030] In order to smoothly adjust the pressure, the intermediate pressure regulating member is a bowl-shaped, flared rubber pressure regulating membrane.

[0031] In order to improve the pressure regulating ability of the intermediate pressure regulating part and increase its service life, the closed end of the intermediate pressure regulating part has a first outer convex ring 42-2, the cross-section of the first outer convex ring is a V-shape rotated 90 degrees, the bottom of the V-shape faces the motor body, and the open end of the V-shape faces the controller, and the inner cavity of the first outer convex ring is an integrated structure with the inner cavity of the intermediate pressure regulating part; the closed end of the pressure regulating cover has a second outer convex ring 44-1, the cross-section of the second outer convex ring is a V-shape rotated 90 degrees, the bottom of the V-shape faces the motor body, and the open end of the V-shape faces the controller, and the inner cavity of the second outer convex ring is connected to the outer wall space of the pressure regulating cover.

[0032] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are possible in the above-described embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A submersible motor with a built-in controller, comprising a motor body, a controller for controlling the motor body and arranged at one end of the motor body, and a bottom adjustment mechanism arranged at the bottom of the controller, characterized in that An intermediate voltage regulating mechanism is provided between the motor body and the controller, and the intermediate voltage regulating mechanism isolates the motor body and the controller; The intermediate voltage regulating mechanism includes a connecting tube, an intermediate voltage regulating member arranged in the inner cavity of the connecting tube, a lead sleeve arranged on the connecting tube, the lead sleeve and the connecting tube are sealed together, one end of the connecting tube is sealed together with the motor housing on the motor body, and the other end is sealed together with the controller housing; The intermediate pressure regulating part includes a pressure regulating membrane with an opening at one end, a pressure regulating cover arranged at the open end of the pressure regulating membrane, an outward folding edge provided on the pressure regulating cover, the end wall of the intermediate pressure regulating part abuts against the outward folding edge, a retaining ring is pressed on the outward folding edge, and the end of the intermediate pressure regulating part facing the controller forms an axial limiting fit with the connecting tube through the retaining ring.

2. The submersible motor with built-in controller according to claim 1, characterized in that The intermediate voltage regulating mechanism further includes epoxy colloid filled in the lead sleeve, and the epoxy colloid fills the gap between the lead sleeve and the lead.

3. The submersible motor with built-in controller according to claim 1, characterized in that The inner wall of the connecting cylinder and the outer wall of the intermediate pressure regulating component form a detachable fixed connection.

4. The submersible motor with built-in controller according to claim 3, characterized in that A convex ring is provided on the inner wall of the connecting tube, and a concave ring is provided on the outer wall of the intermediate pressure regulating piece. The convex ring and the concave ring cooperate to form a detachable fixed connection between the connecting tube and the intermediate pressure regulating piece.

5. The submersible motor with built-in controller according to claim 4, characterized in that A convex ring is provided on the outer wall of the connecting cylinder, and the end of the motor housing and the end of the controller housing respectively abut against the two annular surfaces of the convex ring. A sealing fit is formed between the outer wall of the connecting cylinder located on both sides of the convex ring and the motor housing, and between the outer wall of the connecting cylinder and the inner wall of the controller housing through sealing rings.

6. The submersible motor with built-in controller according to claim 1, characterized in that One end of the lead sleeve is communicated with the circuit channel in the motor body, and the other end of the lead sleeve is communicated with the circuit channel in the controller.

7. The submersible motor with built-in controller according to claim 1, characterized in that The intermediate pressure regulating member is a bowl-shaped, expanded rubber pressure regulating membrane.

8. The submersible motor with built-in controller according to claim 7, characterized in that The closed end of the intermediate pressure regulating part has a first outwardly protruding ring, the cross-section of the first outwardly protruding ring is a V-shape rotated 90 degrees, the bottom of the V-shape faces the motor body, and the open end of the V-shape faces the controller, and the inner cavity of the first outwardly protruding ring is an integrated structure with the inner cavity of the intermediate pressure regulating part; the closed end of the pressure regulating cover has a second outwardly protruding ring, the cross-section of the second outwardly protruding ring is a V-shape rotated 90 degrees, the bottom of the V-shape faces the motor body, and the open end of the V-shape faces the controller, and the inner cavity of the second outwardly protruding ring is connected to the outer wall space of the pressure regulating cover.

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