CN211981628U - Sealing structure of explosion-proof motor of air pump - Google Patents
Sealing structure of explosion-proof motor of air pump Download PDFInfo
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- CN211981628U CN211981628U CN202020782296.8U CN202020782296U CN211981628U CN 211981628 U CN211981628 U CN 211981628U CN 202020782296 U CN202020782296 U CN 202020782296U CN 211981628 U CN211981628 U CN 211981628U
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Abstract
The utility model provides a seal structure of explosion-proof motor of air pump, includes the motor body, still includes: the first sealing structure is arranged between the motor shaft and the motor front end cover and used for preventing hydrogen in the pressurizing cavity from entering the motor cavity; the second sealing structure is arranged between the motor rear end cover and the motor shell and used for isolating the motor cavity from the outside; and the third sealing structure is arranged between the motor wire holder and the motor shell and used for isolating the motor cavity from the outside. The motor is improved and upgraded at all easy leakage points, the overall sealing performance is greatly improved, the situation of explosion due to hydrogen leakage can be avoided, the safety coefficient is high, the service life is long, and the quality is stable and reliable.
Description
The technical field is as follows:
the utility model relates to an air pump explosion-proof machine's seal structure.
Background art:
the fuel cell generates electric energy through electrochemical reaction between combustible substances (hydrogen) and oxygen in air, wherein after the fuel cell reaction, discharged gas contains a large amount of hydrogen, and if the hydrogen is directly discharged into the atmosphere, the hydrogen is on one hand wasted energy, on the other hand pollutes the environment, and on the other hand, the hydrogen is flammable and combustible, so that danger is generated. Therefore, it is necessary to recover and reuse such hydrogen. At present, these hydrogen-containing mixed gases are generally recycled to the fuel cell by a hydrogen circulation pump for recycling.
In view of the special operational environment of hydrogen circulating pump, the requirement of hydrogen circulating pump to the motor is very high, and current hydrogen circulating pump, supporting all are ordinary motors that use, and the leakproofness is poor, does not have explosion-proof function, in the use, has following shortcoming:
(1) hydrogen in the pressurizing cavity is easy to leak into a motor cavity, a stator and a rotor of a common motor are not protected, so that hydrogen is easily corroded by hydrogen for a light person to cause the hydrogen embrittlement of the motor, the service life of the motor is shortened, and a heavy person can have explosion danger;
(2) the hydrogen leaked into the motor cavity is easy to leak to the outside from the connecting part of the motor rear end cover and the motor shell and the connecting part of the motor wire holder and the motor shell, so that the danger of explosion caused by deflagration occurs.
In summary, in the field of hydrogen circulation pumps, the problem of motors has become a technical problem to be solved urgently in the industry.
The utility model has the following contents:
the utility model discloses a remedy prior art not enough, provide a seal structure of air pump explosion-proof machine, all carried out improvement upgrading to easy leakage point everywhere of motor, whole leakproofness improves greatly, can avoid taking place the condition emergence of detonation explosion because of hydrogen leaks, factor of safety is high, long service life, and the steady quality is reliable, has solved the problem among the prior art.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides a seal structure of explosion-proof motor of air pump, includes the motor body, still includes:
the first sealing structure is arranged between the motor shaft and the motor front end cover and used for preventing hydrogen in the pressurizing cavity from entering the motor cavity;
the second sealing structure is arranged between the motor rear end cover and the motor shell and used for isolating the motor cavity from the outside;
and the third sealing structure is arranged between the motor wire holder and the motor shell and used for isolating the motor cavity from the outside.
The first sealing structure adopts an oil seal.
The oil seal is made of rubber or a steel skeleton and Teflon or the steel skeleton and the rubber and Teflon.
The second sealing structure and the third sealing structure adopt O-shaped rings or sealing glue.
And sealing glue is encapsulated in the motor wire holder.
The surface of the stator of the motor is subjected to encapsulation treatment through a non-metallic material.
The rotor surface of the motor is provided with a non-metal plastic-coated material, and the non-metal plastic-coated material is carbon fiber, epoxy resin, glass fiber, adhesive tape, Teflon or nylon.
And a pressurizing hole is formed in the rear end cover of the motor or the motor shell, and a pressurizing valve is arranged in the pressurizing hole.
And the motor cavity is filled with flame-retardant gas through the pressing hole.
The utility model adopts the above technical scheme, have following advantage:
the design of the first sealing structure, the second sealing structure and the third sealing structure improves and upgrades the easy leakage points of the motor, greatly improves the whole sealing property, and can avoid the explosion caused by explosion due to hydrogen leakage; the stator and the rotor are protected, so that the safety coefficient is high, the service life is long, and the quality is stable and reliable; the pressurizing hole is additionally arranged, the assembled motor can be tested in a pressure mode through the pressurizing hole, the air tightness of the explosion-proof motor can be checked, flame-retardant gas can be filled into the motor cavity after vacuumizing, the flame-retardant gas increases the air pressure in the motor cavity, hydrogen in the pressurizing cavity is difficult to leak into the motor cavity, and even if the hydrogen leaks into the motor cavity, the flame-retardant gas can play a flame-retardant effect, so that the overall explosion-proof performance of the motor is improved.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a first sealing structure, 2, a motor shaft, 3, a motor front end cover, 4, a motor cavity, 5, a second sealing structure, 6, a motor rear end cover, 7, a motor shell, 8, a third sealing structure, 9, a motor wire holder, 10, sealant, 11, a stator, 12, a rotor, 13, a pressurizing valve, 14 and a pressurizing hole are formed.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1, a sealing structure of an explosion-proof motor of an air pump comprises a motor body, and further comprises:
the first sealing structure 1 is arranged between the motor shaft 2 and the motor front end cover 3 and used for preventing hydrogen in the pressurizing cavity from entering the motor cavity 4;
the second sealing structure 5 is arranged between the motor rear end cover 6 and the motor shell 7 and used for isolating the motor cavity 4 from the outside;
and the third sealing structure 8 is arranged between the motor wire holder 9 and the motor shell 7, and is used for isolating the motor cavity 4 from the outside.
The first sealing structure 1 adopts an oil seal, and the oil seal is made of rubber or a steel skeleton and Teflon or the steel skeleton and the rubber and Teflon.
The second sealing structure 5 and the third sealing structure 8 adopt O-shaped rings or sealing glue. The sealant can be anaerobic planar sealant, is mainly applied to small-gap planar sealing of mechanical parts, such as a box body, a flange, an end cover joint surface and the like, and can replace a gasket when being applied to a rigid metal and metal sealing environment, so that the sealing reliability is improved, and the integral rigidity and the bearing capacity are increased.
The sealing glue 10 is filled and sealed in the motor wire holder 9, the motor wire outlet position in the motor wire holder 9 is sealed, and hydrogen is prevented from leaking outwards from the inside of the motor wire holder 9.
The 11 surfaces of stator of motor are through non-metallic material embedment processing, the 12 surfaces of rotor of motor are equipped with non-metallic package and mould the material, non-metallic package moulds the material and is carbon fiber, epoxy, glass silk, sticky tape, teflon or nylon, can prevent to strike sparks the phenomenon because of the assembly reason or the metal friction that rotor and stator collision that the bearing became invalid and lead to take place.
The motor rear end cover 6 or the motor shell 7 are provided with a pressurizing hole 14, a pressurizing valve 13 is arranged in the pressurizing hole 14, and the motor cavity 4 is filled with flame-retardant gas through the pressurizing hole. The pressurizing hole 14 can be used for testing the pressure of the assembled motor and checking the air tightness of the explosion-proof motor, and can be used for filling flame-retardant gas into the cavity of the motor after vacuumizing, so that the air pressure in the cavity of the motor is increased by the flame-retardant gas, hydrogen in the pressurizing cavity is difficult to leak into the cavity of the motor, and the flame-retardant gas can play a flame-retardant role even if the hydrogen leaks into the cavity of the motor, thereby improving the overall explosion-proof performance of the motor.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (9)
1. The utility model provides a seal structure of explosion-proof motor of air pump, includes motor body, its characterized in that: further comprising:
the first sealing structure is arranged between the motor shaft and the motor front end cover and used for preventing hydrogen in the pressurizing cavity from entering the motor cavity;
the second sealing structure is arranged between the motor rear end cover and the motor shell and used for isolating the motor cavity from the outside;
and the third sealing structure is arranged between the motor wire holder and the motor shell and used for isolating the motor cavity from the outside.
2. The sealing structure of an air pump explosion-proof motor according to claim 1, characterized in that: the first sealing structure adopts an oil seal.
3. The sealing structure of an air pump explosion-proof motor according to claim 2, characterized in that: the oil seal is made of rubber or a steel skeleton and Teflon or the steel skeleton and the rubber and Teflon.
4. The sealing structure of an air pump explosion-proof motor according to claim 1, characterized in that: the second sealing structure and the third sealing structure adopt O-shaped rings or sealing glue.
5. The sealing structure of an air pump explosion-proof motor according to claim 1, characterized in that: and sealing glue is encapsulated in the motor wire holder.
6. The sealing structure of an air pump explosion-proof motor according to claim 1, characterized in that: the surface of the stator of the motor is subjected to encapsulation treatment through a non-metallic material.
7. The sealing structure of an air pump explosion-proof motor according to claim 1, characterized in that: the rotor surface of the motor is provided with a non-metal plastic-coated material, and the non-metal plastic-coated material is carbon fiber, epoxy resin, glass fiber, adhesive tape, Teflon or nylon.
8. The sealing structure of an air pump explosion-proof motor according to claim 1, characterized in that: and a pressurizing hole is formed in the rear end cover of the motor or the motor shell, and a pressurizing valve is arranged in the pressurizing hole.
9. The sealing structure of an air pump explosion-proof motor according to claim 8, characterized in that: and the motor cavity is filled with flame-retardant gas through the pressing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020782296.8U CN211981628U (en) | 2020-05-12 | 2020-05-12 | Sealing structure of explosion-proof motor of air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020782296.8U CN211981628U (en) | 2020-05-12 | 2020-05-12 | Sealing structure of explosion-proof motor of air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211981628U true CN211981628U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020782296.8U Active CN211981628U (en) | 2020-05-12 | 2020-05-12 | Sealing structure of explosion-proof motor of air pump |
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| Country | Link |
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| CN (1) | CN211981628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825748A (en) * | 2022-04-24 | 2022-07-29 | 烟台东德实业有限公司 | Outgoing line sealing structure of hydrogen circulating pump motor |
-
2020
- 2020-05-12 CN CN202020782296.8U patent/CN211981628U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825748A (en) * | 2022-04-24 | 2022-07-29 | 烟台东德实业有限公司 | Outgoing line sealing structure of hydrogen circulating pump motor |
| CN114825748B (en) * | 2022-04-24 | 2023-12-22 | 烟台东德实业有限公司 | Hydrogen circulating pump motor sealing structure that is qualified for next round of competitions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201218 Address after: 264000 100 meters south of xingjiazhuang village, Tingkou Town, Qixia City, Yantai City, Shandong Province Patentee after: Yantai Dongde Hydrogen Energy Technology Co., Ltd Address before: Xingjiating Town, Yantai City, Shandong Province Patentee before: YANTAI DONGDE INDUSTRIAL Co.,Ltd. |
|
| TR01 | Transfer of patent right |