CN203674886U - Positive pressure ventilation control apparatus for explosion-proof motor - Google Patents
Positive pressure ventilation control apparatus for explosion-proof motor Download PDFInfo
- Publication number
- CN203674886U CN203674886U CN201420028302.5U CN201420028302U CN203674886U CN 203674886 U CN203674886 U CN 203674886U CN 201420028302 U CN201420028302 U CN 201420028302U CN 203674886 U CN203674886 U CN 203674886U
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- Prior art keywords
- motor
- microprocessor
- explosion
- proof
- purging
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- 238000009423 ventilation Methods 0.000 title abstract description 4
- 238000010926 purge Methods 0.000 claims abstract description 47
- 238000012360 testing method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 239000002360 explosive Substances 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 abstract description 5
- 230000006837 decompression Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 24
- 238000005457 optimization Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000001351 cycling effect Effects 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model discloses a positive pressure ventilation control apparatus for an explosion-proof motor. The positive pressure ventilation control apparatus comprises a control system and a purging system. The purging system comprises a gas pursing device and a decompression valve arranged at the top portion of an increased-safety motor. The control system comprises a microprocessor and an explosion-proof solenoid valve; the explosion-proof solenoid valve is connected with the microprocessor and is controlled by the microprocessor; the explosion-proof solenoid valve is connected with the gas purging device and is taken as an execution unit of the gas purging device; and the gas outlet of the gas purging device is arranged inside a positive pressure motor. According to the utility model, surrounding explosive gas mixtures are prevented from entering the inside of a motor housing, sparks, arcs and dangerous temperature which are likely to be generated by a motor are all arranged within the protection of such a positive pressure housing, so that contact with the surrounding explosive gas mixtures is impossible, and even if the sparks, the arcs and the dangerous temperature are generated inside the motor, the generation of explosion events is impossible, such that the purpose of explosion resistance is achieved.
Description
Technical field
The utility model relates to a kind of forced draft control device for fire-proof motor.
Background technology
China is for the large-scale flame-proof electric motor of the explosion hazard areas such as oil, chemical industry at present, but due to the common environment all existing in explosive type admixture of gas high concentration of work of fire-proof motor, in the time of electric motor starting and operation, explosive type admixture of gas is very easy to enter motor housing inside, once motor produces spark, electric arc or high temperature and puts outward, just may cause the generation of explosion accident, bring very big danger.
Summary of the invention
The utility model object is to provide a kind of forced draft control device for fire-proof motor, and it improves the explosion-proof performance of fire-proof motor, has improved the job security of fire-proof motor.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
A kind of forced draft control device for fire-proof motor, described forced draft control device comprises control system and purging system, purging system comprises gas purging device and is arranged on the relief valve at increased safety motor top, control system comprises microprocessor and explosion-proof solenoid valve, explosion-proof solenoid valve is connected with microprocessor and is subject to microprocessor control, described explosion-proof solenoid valve is connected with gas purging device as the performance element of gas purging device, and the inside of positive Medium-voltage Motor is located in the gas outlet of gas purging device.
Before motor cycling start, forced draft control device triggers purging system work by control system, purging system purge gas (ozone or nitrogen) enters motor cavity, the original gas of motor cavity is effectively replaced, the gas of inner chamber is discharged by the relief valve that is arranged on motor top, after purging completes, relief valve cuts out automatically, can provide cycling start signal with timer, motor enters pressurize and leakage compensation state (because motor volume is larger, leakage point is relatively many, therefore motor straight taps into into leakage compensation state), in motor operation course, motor cavity pressure is all the time higher than ambient pressure (at least 50 Pa), prevent that imflammable gas from entering enclosure interior.
For technique scheme, inventor also has further optimization embodiment.
As optimization, on malleation electric machine casing, be provided with the air pressure detecting sensor for detection of motor cavity pressure, the testing result of described air pressure detecting sensor is sent to microprocessor, and microprocessor is according to the work of the positive Medium-voltage Motor of testing result control of air pressure detecting sensor.On electric machine casing, be provided with air pressure detecting sensor and can monitor the minimum pressure of motor cavity, intermediate pressure, leakage compensation pressure, in the time there is the on the low side or decompression state of pressure, can not guarantee normal leakage compensation time, forced draft control device can provide signal, microprocessor is received after signal, automatic alarm or cut-out motor power.
As optimization, in purging system, be provided with purging timer, the described purging timer that gas purging device work is carried out to timing is connected with microprocessor.Guarantee to purge effectively carrying out of action, improve explosion-proof effect.
As optimization, on the relief valve of blow device, be provided with pressure sensor, the detection signal of pressure sensor is sent to microprocessor, and microprocessor is according to the work of testing result control forced draft control device.
As optimization, in relief valve, be provided with flame arrester.Isolated motor internal and external environment, reach explosion-proof object.
Than solution of the prior art, the utility model advantage is:
The described forced draft control device for fire-proof motor of the utility model, by purging system is set on fire-proof motor, in conjunction with outside control system, in the time of start-up and operation, the air pressure of explosion-proof motor shell inside is all the time higher than the air pressure of housing exterior, thereby prevent that explosive type admixture of gas enters motor housing inside around, by issuable motor spark, within electric arc and dangerous temperature are all placed on this pressurized enclosure protection, it can not be contacted with explosive type admixture of gas around, even if motor internal produces spark, electric arc and dangerous temperature, the generation that also can not cause an explosion accident, thereby reach explosion-proof object.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the structural representation of forced draft control device in the utility model embodiment;
Wherein: 1, relief valve; 2, air pressure detecting sensor; 3, explosion-proof solenoid valve; 4, remote control switch; 5, purge timer.
Embodiment
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for the present invention is described.The implementation condition adopting in embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
Embodiment:
The present embodiment has been described a kind of forced draft control device for fire-proof motor, described forced draft control device comprises control system and purging system, as shown in Figure 1, purging system comprises gas purging device and is arranged on the relief valve 1 at increased safety motor top, control system comprises microprocessor and explosion-proof solenoid valve 3, explosion-proof solenoid valve 3 is connected with microprocessor and is subject to microprocessor control, described explosion-proof solenoid valve 3 is connected with gas purging device as the performance element of gas purging device, and the inside of positive Medium-voltage Motor is located in the gas outlet of gas purging device.
Before motor cycling start, forced draft control device triggers purging system work by control system, purging system purge gas (ozone or nitrogen) enters motor cavity, the original gas of motor cavity is effectively replaced, the gas of inner chamber is discharged by the relief valve 1 that is arranged on motor top, after purging completes, relief valve 1 cuts out automatically, can provide cycling start signal with timer, motor enters pressurize and leakage compensation state (because motor volume is larger, leakage point is relatively many, therefore motor straight taps into into leakage compensation state), in motor operation course, motor cavity pressure is all the time higher than ambient pressure (at least 50 Pa), prevent that imflammable gas from entering enclosure interior.
On malleation electric machine casing, be provided with the air pressure detecting sensor 2 for detection of motor cavity pressure, the testing result of described air pressure detecting sensor 2 is sent to microprocessor, and microprocessor is according to the work of the positive Medium-voltage Motor of testing result control of air pressure detecting sensor 2.On electric machine casing, be provided with pressure monitoring point and can monitor the minimum pressure of motor cavity, intermediate pressure, leakage compensation pressure, in the time there is the on the low side or decompression state of pressure, can not guarantee normal leakage compensation time, forced draft control device can provide signal, microprocessor is received after signal, automatic alarm or cut-out motor power.
In purging system, be provided with and purge timer 5, the described purging timer 5 that gas purging device work is carried out to timing is connected with microprocessor.Guarantee to purge effectively carrying out of action, improve explosion-proof effect.
On the relief valve 1 of blow device, be provided with pressure sensor, the detection signal of pressure sensor is sent to microprocessor, and microprocessor is according to the work of testing result control forced draft control device.
In relief valve 1, be provided with flame arrester.The isolated motor internal of flame arrester and external environment, reach explosion-proof object.
Remote control switch 4 also can be set on motor housing, for the long-range operation to malleation ventilation unit.
Above-mentioned example is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations that Spirit Essence does according to the present invention or modification, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. the forced draft control device for fire-proof motor, it is characterized in that, described forced draft control device comprises control system and purging system, purging system comprises gas purging device and is arranged on the relief valve at increased safety motor top, control system comprises microprocessor and explosion-proof solenoid valve, explosion-proof solenoid valve is connected with microprocessor and is subject to microprocessor control, described explosion-proof solenoid valve is connected with gas purging device as the performance element of gas purging device, and the inside of positive Medium-voltage Motor is located in the gas outlet of gas purging device.
2. the forced draft control device for fire-proof motor according to claim 1, it is characterized in that, on malleation electric machine casing, be provided with the air pressure detecting sensor for detection of motor cavity pressure, the testing result of described air pressure detecting sensor is sent to microprocessor, and microprocessor is according to the work of the positive Medium-voltage Motor of testing result control of air pressure detecting sensor.
3. the forced draft control device for fire-proof motor according to claim 1, is characterized in that, is provided with purging timer in purging system, and the described purging timer that gas purging device work is carried out to timing is connected with microprocessor.
4. the forced draft control device for fire-proof motor according to claim 1, it is characterized in that, on the relief valve of blow device, be provided with pressure sensor, the detection signal of pressure sensor is sent to microprocessor, and microprocessor is according to the work of testing result control forced draft control device.
5. the forced draft control device for fire-proof motor according to claim 1, is characterized in that, is provided with flame arrester in relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420028302.5U CN203674886U (en) | 2014-01-17 | 2014-01-17 | Positive pressure ventilation control apparatus for explosion-proof motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420028302.5U CN203674886U (en) | 2014-01-17 | 2014-01-17 | Positive pressure ventilation control apparatus for explosion-proof motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674886U true CN203674886U (en) | 2014-06-25 |
Family
ID=50971137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420028302.5U Expired - Lifetime CN203674886U (en) | 2014-01-17 | 2014-01-17 | Positive pressure ventilation control apparatus for explosion-proof motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674886U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898740A (en) * | 2015-06-01 | 2015-09-09 | 芜湖品通塑业科技有限公司 | Explosion-proof motor used for bag-making machine |
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
| CN109072891A (en) * | 2016-04-28 | 2018-12-21 | 林德股份公司 | fluid energy machine |
| CN109067069A (en) * | 2018-08-31 | 2018-12-21 | 卧龙电气南阳防爆集团股份有限公司 | A kind of light-duty positive pressure explosion-proof type box type electric generator |
| CN110601420A (en) * | 2019-09-27 | 2019-12-20 | 哈尔滨理工大学 | Magnetic fluid sealing positive pressure type explosion-proof motor |
-
2014
- 2014-01-17 CN CN201420028302.5U patent/CN203674886U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898740A (en) * | 2015-06-01 | 2015-09-09 | 芜湖品通塑业科技有限公司 | Explosion-proof motor used for bag-making machine |
| CN104898740B (en) * | 2015-06-01 | 2017-04-12 | 芜湖品通塑业科技有限公司 | Explosion-proof motor used for bag-making machine |
| CN109072891A (en) * | 2016-04-28 | 2018-12-21 | 林德股份公司 | fluid energy machine |
| CN108389604A (en) * | 2018-03-29 | 2018-08-10 | 眉山麦克在线设备股份有限公司 | Positive pressure purges explosion-proof control system |
| CN109067069A (en) * | 2018-08-31 | 2018-12-21 | 卧龙电气南阳防爆集团股份有限公司 | A kind of light-duty positive pressure explosion-proof type box type electric generator |
| CN110601420A (en) * | 2019-09-27 | 2019-12-20 | 哈尔滨理工大学 | Magnetic fluid sealing positive pressure type explosion-proof motor |
| CN110601420B (en) * | 2019-09-27 | 2024-04-12 | 哈尔滨理工大学 | Magnetic fluid sealing positive pressure type explosion-proof motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
|
| CX01 | Expiry of patent term |