CN212163030U - Oil-filled submersible motor with improved junction box structure - Google Patents
Oil-filled submersible motor with improved junction box structure Download PDFInfo
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- CN212163030U CN212163030U CN202021171879.3U CN202021171879U CN212163030U CN 212163030 U CN212163030 U CN 212163030U CN 202021171879 U CN202021171879 U CN 202021171879U CN 212163030 U CN212163030 U CN 212163030U
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Abstract
The utility model relates to an improve oil charge dive motor of terminal box structure, the terminal box that solves prior art existence is sealed not good, the leakproofness detects trouble scheduling problem, the technical scheme of adoption: the wiring board is provided with a through hole which is communicated with the inner cavity of the motor and the inner cavity of the junction box. The method has the following effects: a gas testing process hole does not need to be formed in the junction box, and the gas testing process hole does not need to be plugged by a process plug, so that the detection of the sealing property between the process plug and the gas testing process hole is avoided, the problem that water vapor enters due to insufficient sealing property is also avoided, and the testing efficiency and the assembling efficiency are improved; the through holes are formed in the wiring board, so that the inner cavity of the motor is communicated with the inner cavity of the wiring box, the inner cavity of the wiring box is filled with oil, and the oil in the inner cavity of the wiring box can balance the pressure difference inside and outside the wiring box, so that water vapor is prevented from permeating.
Description
Technical Field
The utility model relates to an oil charge dive motor especially relates to an improve oil charge dive motor of terminal box structure.
Background
The existing submersible pump generally has the following problems:
1. the water pump is soaked in water for long-term work, under the action of external water pressure, pressure difference exists in the inner cavity and the outer cavity of the junction box, when a cable rubber sheath is aged, the sealing performance is reduced, water vapor permeates into the inner cavity of the junction box under the action of the internal and external pressure difference, air in the cavity is moist, the insulating performance is reduced, and the safety risk of electric leakage is increased.
2. When carrying out the leakproofness test to each immersible pump, need test motor chamber, terminal box inner chamber respectively, the test item is more relatively, and it is consuming time many to test, and the production efficiency that influences the immersible pump is not high.
3. When the sealing performance of the inner cavity of the junction box is tested, a gas testing process hole is formed in the junction box cover, the process hole is sealed by a process plug after the test, and the sealing performance between the process plug and the gas testing process hole cannot be detected.
4. When the leakproofness between test wiring board and motor casing, the wiring board can be drenched to the test water, and the water clearance of wiring board department then can be sealed in the inner chamber of terminal box, reduces insulating properties.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provide an oil-filled submersible motor with an improved junction box structure, which does not need to provide a gas testing process hole on the junction box and also does not need to plug the gas testing process hole through a process plug, thereby avoiding the detection of the sealing property between the process plug and the gas testing process hole, avoiding the problem of water vapor entering due to insufficient sealing property, and simultaneously improving the testing efficiency and the assembling efficiency; the through holes are formed in the wiring board, so that the inner cavity of the motor is communicated with the inner cavity of the wiring box, the inner cavity of the wiring box is filled with oil, and the oil in the inner cavity of the wiring box can balance the internal and external pressure difference, so that water vapor is prevented from permeating.
The above technical purpose of the present invention is mainly solved by the following technical solutions: the oil-filled submersible motor with the improved junction box structure comprises a motor shell and a junction box arranged on the motor shell, wherein the junction box comprises a box body, a box cover arranged at the outer end of the box body and a wiring board arranged in the inner cavity of the box body, an assembly opening is formed in the motor shell, the wiring board is matched and assembled with the assembly opening on the motor shell, the wiring board is hermetically assembled with the motor shell, and the oil-filled submersible motor is characterized in that a through hole is formed in the wiring board and is communicated with the inner cavity of the motor and the inner cavity of the junction box. The improved technical scheme has the characteristics that: a gas testing process hole does not need to be formed in the junction box, and the gas testing process hole does not need to be plugged by a process plug, so that the detection of the sealing property between the process plug and the gas testing process hole is avoided, the problem that water vapor enters due to insufficient sealing property is also avoided, and the testing efficiency and the assembling efficiency are improved; the through holes are formed in the wiring board, so that the inner cavity of the motor is communicated with the inner cavity of the wiring box, the inner cavity of the wiring box is filled with oil, and the oil in the inner cavity of the wiring box can balance the pressure difference inside and outside the wiring box, so that water vapor is prevented from permeating.
As further improvement and supplement to the above technical scheme, the utility model discloses a following technical measure: in order to improve the oil charging efficiency and fully balance the internal and external pressure difference of the inner cavity of the junction box, the through holes are multiple.
The wall of the assembly opening is of a concave step structure, the assembly portion of the wiring board comprises an inserting portion and a bearing portion, the bearing portion protrudes out of the inserting portion, the inserting portion is inserted into the assembly opening, and the bearing portion is supported on the concave step structure.
And a first sealing element is arranged between the bearing part and the concave step structure.
The device part of the box body is pressed on the bearing part, and a second sealing part is arranged between the box body and the bearing part.
The device part of the box body is of a convex step structure, the convex part of the convex step structure is pressed on the bearing part, and a third sealing element is arranged between the concave part of the convex step structure and the convex part of the concave step structure to form interference fit.
The utility model discloses beneficial effect who has: a gas testing process hole does not need to be formed in the junction box, and the gas testing process hole does not need to be plugged by a process plug, so that the detection of the sealing property between the process plug and the gas testing process hole is avoided, the problem that water vapor enters due to insufficient sealing property is also avoided, and the testing efficiency and the assembling efficiency are improved; the through holes are formed in the wiring board, so that the inner cavity of the motor is communicated with the inner cavity of the wiring box, the inner cavity of the wiring box is filled with oil, and the oil in the inner cavity of the wiring box can balance the pressure difference inside and outside the wiring box, so that water vapor is prevented from permeating.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial structural view of fig. 1.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): as shown in fig. 1 and 2, the oil-filled submersible motor with the improved junction box structure comprises a motor shell 1 and a junction box 2 arranged on the motor shell, wherein the junction box comprises a box body 21 and a wiring board 22 arranged in an inner cavity of the box body, an assembly opening 11 is arranged on the motor shell, the wiring board is matched with the assembly opening and assembled on the motor shell, the wiring board and the motor shell are assembled in a sealing mode, and a through hole 23 is arranged on the wiring board and communicated with the inner cavity of the motor and the inner cavity of the junction box. The improved technical scheme has the characteristics that: a gas testing process hole does not need to be formed in the junction box, and the gas testing process hole does not need to be plugged by a process plug, so that the detection of the sealing property between the process plug and the gas testing process hole is avoided, the problem that water vapor enters due to insufficient sealing property is also avoided, and the testing efficiency and the assembling efficiency are improved; the through holes are formed in the wiring board, so that the inner cavity of the motor is communicated with the inner cavity of the wiring box, the inner cavity of the wiring box is filled with oil, and the oil in the inner cavity of the wiring box can balance the pressure difference inside and outside the wiring box, so that water vapor is prevented from permeating.
As further improvement and supplement to the above technical scheme, the utility model discloses a following technical measure: in order to improve the oil charging efficiency and fully balance the internal and external pressure difference of the inner cavity of the junction box, the through holes 23 are multiple.
The wall of the assembly opening is of a concave step structure, the assembly portion of the wiring board comprises an insertion portion 22-1 and a bearing portion 22-2, the bearing portion protrudes out of the insertion portion, the insertion portion is inserted into the assembly opening 11, and the bearing portion 22-2 is supported on the concave step structure.
And a first sealing element 3 is arranged between the bearing part and the concave step structure.
The device part of the box body is pressed on the bearing part 22-2, and a second sealing part 4 is arranged between the box body and the bearing part.
The device part of the box body is of an outer convex step structure, the convex part 21-1 of the outer convex step structure is pressed on the bearing part, and a third sealing element 5 is arranged between the concave part 21-2 of the outer convex step structure and the convex part 12 of the inner concave step structure and forms interference fit.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In the above embodiments, the present invention may be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The oil-filled submersible motor with the improved junction box structure comprises a motor shell and a junction box arranged on the motor shell, wherein the junction box comprises a box body, a box cover arranged at the outer end of the box body and a wiring board arranged in the inner cavity of the box body, an assembly opening is formed in the motor shell, the wiring board is matched and assembled with the assembly opening on the motor shell, the wiring board is hermetically assembled with the motor shell, and the oil-filled submersible motor is characterized in that a through hole is formed in the wiring board and is communicated with the inner cavity of the motor and the inner cavity of the junction box.
2. The improved structure of junction box of oil-filled submersible motor as claimed in claim 1, wherein said through holes are plural.
3. The oil-filled submersible motor with the improved junction box structure as claimed in claim 1 or 2, wherein the wall of the assembly opening is of a concave step structure, the assembly portion of the terminal board comprises an insertion portion and a bearing portion, the bearing portion protrudes out of the insertion portion, the insertion portion is inserted into the assembly opening, and the bearing portion is supported on the concave step structure.
4. The oil-filled submersible motor with improved junction box structure as claimed in claim 3, wherein a first sealing member is disposed between the receiving part and the concave step structure.
5. The oil-filled submersible motor with improved junction box structure as claimed in claim 4, wherein the device part of the box body presses on the receiving part, and a second sealing member is arranged between the box body and the receiving part.
6. The oil-filled submersible motor with the improved junction box structure as claimed in claim 5, wherein the device part of the box body is of a convex step structure, the convex part of the convex step structure presses on the bearing part, and a third sealing element is arranged between the concave part of the convex step structure and the convex part of the concave step structure to form interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021171879.3U CN212163030U (en) | 2020-06-22 | 2020-06-22 | Oil-filled submersible motor with improved junction box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021171879.3U CN212163030U (en) | 2020-06-22 | 2020-06-22 | Oil-filled submersible motor with improved junction box structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212163030U true CN212163030U (en) | 2020-12-15 |
Family
ID=73700555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021171879.3U Active CN212163030U (en) | 2020-06-22 | 2020-06-22 | Oil-filled submersible motor with improved junction box structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212163030U (en) |
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2020
- 2020-06-22 CN CN202021171879.3U patent/CN212163030U/en active Active
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