CN219372159U

CN219372159U - Novel immersible pump cable protection component

Info

Publication number: CN219372159U
Application number: CN202320815581.9U
Authority: CN
Inventors: 莫勇刚
Original assignee: Taizhou Tianyue Electromechanical Co ltd
Current assignee: Taizhou Tianyue Electromechanical Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-18
Anticipated expiration: 2033-04-13

Abstract

The utility model provides a novel submersible pump cable protection assembly, and belongs to the technical field of water pumps. It has solved the not good problem of current protective structure structural stability. The utility model relates to a submersible pump, which comprises a machine barrel, a rotor shaft arranged in the machine barrel, a stator sleeved outside the rotor shaft and a coil arranged on the stator, wherein a hollow connecting seat is fixed in the upper end of the machine barrel, the upper end of the rotor shaft penetrates through the connecting seat, a wire passing hole for extending a cable on the coil is penetrated through the connecting seat, a protective component comprises an insulating ring sleeved outside the rotor shaft, the insulating ring consists of an inner ring, an outer ring and a connecting ring arranged between the inner ring and the outer ring, and the outer ring is clamped and positioned between the connecting seat and the stator; an annular groove is formed among the connecting ring, the inner ring and the outer ring, the axial section of the annular groove is concave, and the notch of the annular groove faces the connecting seat; the wire passing hole is arranged opposite to the annular groove, and a relief hole for the cable to pass through is penetrated through the bottom wall of the annular groove. The novel immersible pump cable protection component stable in structure.

Description

Novel immersible pump cable protection component

Technical Field

The utility model belongs to the technical field of water pumps, and relates to a submersible pump, in particular to a novel submersible pump cable protection assembly.

Background

The existing deep well pump is generally composed of a power part and a pump body part. The power part comprises a machine barrel, a rotor shaft arranged in the machine barrel, a rotor connected with the rotor shaft, a stator sleeved outside the rotor, a coil arranged on the stator and a cable connected with the coil. Wherein, be fixed with bearing frame and connecting seat in the barrel both ends respectively, the connecting seat is used for connecting the cylindric shell of pump body part, and the rotor shaft lower extreme rotates to be supported on the bearing frame, and the rotor shaft upper end passes the connecting seat, and rotor shaft and connecting seat rotate sealing connection, are equipped with the through-hole that supplies the cable to stretch out on the connecting seat axially.

In the deep-well pump, the part of the cable in the machine barrel is not protected, and when the deep-well pump is in actual use, the situation that the cable contacts with the rotor shaft to rub and leak electricity occurs, so that the potential safety hazard is large, and the service life is influenced.

In view of the above problems, a need has been recognized and improved for a cable protection structure for a submersible pump motor (application number 202121518597.0) as disclosed in the chinese patent library, wherein the submersible pump comprises a barrel, a rotor shaft disposed in the barrel, a stator sleeved outside the rotor shaft, a coil mounted on the stator, and a cable connected to the coil, a connecting seat is fixed in one end of the barrel, the outer end of the rotor shaft passes through the connecting seat, the rotor shaft is in rotary sealing connection with the connecting seat, a through hole for the cable to extend is axially formed in the connecting seat, the protection structure comprises a sheath fixed in the barrel, the sheath is made of an insulating material, and the sheath is disposed between the stator and the connecting seat and sleeved outside the rotor shaft; the connection part of the cable and the coil is positioned in the sheath, an annular cavity is formed between the outer wall of the sheath and the inner wall of the machine barrel, the through hole is opposite to and communicated with the annular cavity, and a wire guide hole for communicating the inner cavity of the sheath with the annular cavity is penetrated on the sheath; the sheath is respectively pressed on the stator and the connecting seat through two end surfaces and positioned in the machine barrel; the sheath is of an integrated structure, and comprises a first straight cylinder and a second straight cylinder which are coaxially arranged, wherein the first straight cylinder is positioned between the second straight cylinder and the connecting seat, and the first straight cylinder and the second straight cylinder are respectively pressed on the connecting seat and the stator; the outer diameter of the straight cylinder I is smaller than that of the straight cylinder II, the straight cylinder I and the straight cylinder II are connected through a ring body arranged between the straight cylinder I and the straight cylinder II, and the wire guide hole is positioned on the ring body and axially penetrates through the ring body; the wire hole is arc-shaped and coaxial with the sheath; at least two wire guide holes are uniformly distributed along the circumferential direction of the sheath.

In the protection structure, a plurality of arc-shaped wire guide holes are formed at the joint of the straight cylinder I and the straight cylinder II, so that the sheath is easy to deform and extrude a coil under the extrusion of the stator and the connecting seat, the heat dissipation of the coil is influenced, and the working stability of the whole submersible pump is influenced.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides a novel submersible pump cable protection assembly with a stable structure.

The aim of the utility model can be achieved by the following technical scheme: the novel submersible pump cable protection component comprises a machine barrel, a rotor shaft vertically arranged in the machine barrel, a stator sleeved outside the rotor shaft and a coil arranged on the stator, wherein a connecting seat which is hollow is fixedly arranged in the upper end of the machine barrel, the upper end of the rotor shaft penetrates through the connecting seat and is rotationally connected with the connecting seat, a cable passing hole for a cable on the coil to extend out of the machine barrel is vertically penetrated through the connecting seat, the novel submersible pump cable protection component comprises an insulating ring sleeved outside the rotor shaft, and the insulating ring is positioned between the stator and the connecting seat, and the novel submersible pump cable protection component is characterized in that the insulating ring consists of an inner ring, an outer ring and a connecting ring arranged between the inner ring and the outer ring, the inner ring and the outer ring are coaxially arranged, and the outer ring is clamped and positioned between the connecting seat and the stator; the connecting rings are perpendicular to the inner ring and the outer ring, an annular groove is formed between the inner ring and the outer ring, the axial section of the annular groove is concave, and the notch of the annular groove faces the connecting seat; the connecting ring is arranged between the coil and the connecting seat, the wire passing hole is opposite to the annular groove, and the bottom wall of the annular groove is penetrated with a yielding hole for the cable to pass through.

The insulating ring is clamped between the connecting seat and the stator by the outer ring to realize positioning, and the yielding holes are formed in the connecting ring, so that the positioning part of the insulating ring and the punching part are mutually independent, deformation of the insulating ring during clamping can be effectively avoided, and stable operation of the submersible pump is ensured.

In the novel submersible pump cable protection assembly, the axial length of the inner ring is smaller than that of the outer ring, so that the inner ring is not stressed, and positioning deformation of the insulating ring is further avoided.

In the novel submersible pump cable protection assembly, the connecting ring is connected to the middle position of the inner ring.

In the novel submersible pump cable protection assembly, the outer ring outer side wall and the barrel inner side wall are mutually matched circumferential surfaces and are stuck together, so that the contact area of the outer ring and the barrel can be increased, the positioning stability of the insulating ring is enhanced, the insulating ring is used for mounting and guiding the insulating ring, and the assembly is facilitated.

In the novel submersible pump cable protection assembly, the annular groove comprises two groove side walls which are opposite to each other and a groove bottom wall which is positioned between the two groove side walls, and the groove side walls and the groove bottom wall adopt arc transition to strengthen the integral strength of the insulating ring.

In the novel submersible pump cable protection assembly, the insulating ring is of an integrated structure and is formed in one step in an injection molding mode, so that the strength of the insulating ring is further ensured.

In the novel submersible pump cable protection assembly, the abdication holes are multiple and uniformly distributed along the circumference of the inner ring so as to meet cables at different positions and reduce assembly difficulty.

In the novel submersible pump cable protection assembly, the abdication hole is in an arc shape coaxial with the inner ring.

Compared with the prior art, the insulating ring in the novel immersible pump cable protection assembly utilizes the outer loop to press from both sides tightly to realize the location between connecting seat and stator to will step down the hole setting on the connecting ring, make insulating ring location part and punch the part mutually independent, alright effectively avoid insulating ring like this to receive deformation when pressing from both sides tightly, ensure immersible pump steady operation.

Drawings

Fig. 1 is a schematic view of a submersible pump.

Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.

Fig. 3 is a schematic structural view of an insulating ring.

In the figure, 1, a machine barrel; 2. a rotor shaft; 3. a stator; 4. a coil; 5. a connecting seat; 6. a cable; 7. a bearing; 8. an insulating ring; 8a, an inner ring; 8b, an outer ring; 8c, a connecting ring; 8d, an annular groove; 8e, giving way holes.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, the submersible pump comprises a machine barrel 1, a rotor shaft 2 vertically arranged in the machine barrel 1, a stator 3 sleeved outside the rotor shaft 2 and a coil 4 mounted on the stator 3. Wherein, be fixed with in the barrel 1 upper end and be hollow form connecting seat 5, rotor shaft 2 upper end passes connecting seat 5 and both rotate and connect, and the vertical wire hole that stretches out barrel 1 of cable 6 on the confession package 4 that runs through on the connecting seat 5. In actual products, the rotor shaft 2 is rotatably supported on the connection seat 5 by a bearing 7, and a mechanical seal is arranged between the two.

As shown in fig. 1 and 2, the novel submersible pump cable protection assembly comprises an insulating ring 8 sleeved outside a rotor shaft 2, wherein the insulating ring 8 is positioned between a stator 3 and a connecting seat 5, and the insulating ring 8 and the rotor shaft 2 are coaxial. The insulating ring 8 is of an integral structure and is formed once by injection molding, and as shown in fig. 1, the insulating ring 8 is composed of an inner ring 8a, an outer ring 8b, and a connecting ring 8c provided between the inner ring 8a and the outer ring 8 b. Wherein, inner ring 8a and outer ring 8b coaxial setting, outer ring 8b cover is outside inner ring 8a, and outer ring 8b clamp positioning is between connecting seat 5 and stator 3, and at this moment, outer ring 8b both ends face sticis respectively on connecting seat 5 and stator 3. The inner and outer sides of the connecting ring 8c extend to the inner ring 8a and the outer ring 8b respectively, the connecting ring 8c is perpendicular to the inner ring 8a and the outer ring 8b, and an annular groove 8d is formed between the inner ring 8a and the outer ring 8 b. The axial cross section of the annular groove 8d is concave, and the notch of the annular groove 8d faces the connecting seat 5. The connecting ring 8c is located between the coil 4 and the connecting seat 5, the wire passing hole is opposite to the annular groove 8d, and a yielding hole 8e for the cable 6 to pass through is arranged on the bottom wall of the annular groove 8d in a penetrating manner.

The insulating ring 8 is clamped between the connecting seat 5 and the stator 3 by utilizing the outer ring 8b to realize positioning, and the yielding hole 8e is arranged on the connecting ring 8c, so that the positioning part and the punching part of the insulating ring 8 are mutually independent, deformation of the insulating ring 8 during clamping can be effectively avoided, and stable operation of the submersible pump is ensured.

Further, the connecting ring 8c is connected to the middle portion of the inner ring 8a, that is, the axial section of the assembly of the connecting ring 8c and the inner ring 8a is substantially T-shaped; the outer side wall of the outer ring 8b and the inner side wall of the machine barrel 1 are mutually matched circumferential surfaces and are stuck together, so that the contact area of the outer ring 8b and the machine barrel 1 can be increased, the positioning stability of the insulating ring 8 is enhanced, and the insulating ring 8 is used for mounting and guiding the insulating ring 8 and is beneficial to assembly. The annular groove 8d comprises two opposite groove side walls and a groove bottom wall between the two groove side walls, and the groove side walls and the groove bottom wall adopt arc transition to enhance the integral strength of the insulating ring 8.

As shown in fig. 2, the axial length of the inner ring 8a is smaller than that of the outer ring 8b, so that the inner ring 8a is not stressed, and positioning deformation of the insulating ring 8 is further avoided.

In the actual product, as shown in fig. 3, a plurality of abdicating holes 8e are uniformly distributed along the circumferential direction of the inner ring 8a so as to meet the cables 6 at different positions and reduce the assembly difficulty. The relief hole 8e is preferably circular arc-shaped coaxially with the inner ring 8 a.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The novel submersible pump cable protection assembly comprises a machine barrel (1), a rotor shaft (2) vertically arranged in the machine barrel (1), a stator (3) sleeved outside the rotor shaft (2) and a coil (4) arranged on the stator (3), wherein a connecting seat (5) which is hollow is fixedly arranged at the upper end of the machine barrel (1), the upper end of the rotor shaft (2) penetrates through the connecting seat (5) and is rotationally connected with the connecting seat, a cable (6) vertically penetrating through the connecting seat (5) and provided with a cable supply coil (4) extends out of a wire passing hole of the machine barrel (1), the protection assembly comprises an insulating ring (8) sleeved outside the rotor shaft (2), and the insulating ring (8) is positioned between the stator (3) and the connecting seat (5), and is characterized in that the insulating ring (8) consists of an inner ring (8 a), an outer ring (8 b) and a connecting ring (8 c) arranged between the inner ring (8 a) and the outer ring (8 b), and the outer ring (8 b) are coaxially arranged, and the insulating ring (8 b) is clamped and positioned between the connecting seat (3); the connecting rings (8 c) are perpendicular to the inner ring (8 a) and the outer ring (8 b) and form an annular groove (8 d) between the inner ring (8 a) and the outer ring (8 b), the axial cross section of the annular groove (8 d) is concave, and the notch of the annular groove (8 d) faces the connecting seat (5); the connecting ring (8 c) is positioned between the coil (4) and the connecting seat (5), the wire passing hole is opposite to the annular groove (8 d), and a yielding hole (8 e) for the cable (6) to pass through is penetrated through the bottom wall of the annular groove (8 d).

2. A novel submersible pump cable protection assembly according to claim 1, wherein the inner ring (8 a) has an axial length which is smaller than the axial length of the outer ring (8 b).

3. A novel submersible pump cable protection assembly according to claim 1 or 2, wherein the connection ring (8 c) is connected at a central position of the inner ring (8 a).

4. The novel submersible pump cable protection assembly according to claim 1 or 2, wherein the outer side wall of the outer ring (8 b) and the inner side wall of the machine barrel (1) are mutually matched circumferential surfaces and are stuck together.

5. The novel submersible pump cable protection assembly of claim 1, wherein the annular groove (8 d) comprises two groove side walls which are arranged opposite to each other and a groove bottom wall which is arranged between the two groove side walls, and an arc transition is adopted between the groove side walls and the groove bottom wall.

6. The novel submersible pump cable protection assembly according to claim 2, wherein the insulating ring (8) is of one-piece construction and is formed in one step by injection molding.

7. The novel submersible pump cable protection assembly according to claim 1, wherein the relief holes (8 e) are a plurality of and uniformly distributed along the circumference of the inner ring (8 a).

8. The novel submersible pump cable protection assembly according to claim 7, wherein the relief hole (8 e) is circular arc-shaped coaxial with the inner ring (8 a).