CN101034837A - Security-enhanced three-phase asynchronous motor for mine - Google Patents
Security-enhanced three-phase asynchronous motor for mine Download PDFInfo
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- CN101034837A CN101034837A CN 200710034764 CN200710034764A CN101034837A CN 101034837 A CN101034837 A CN 101034837A CN 200710034764 CN200710034764 CN 200710034764 CN 200710034764 A CN200710034764 A CN 200710034764A CN 101034837 A CN101034837 A CN 101034837A
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Abstract
The invention supplies a mine used increase safe type electric motor; the whole structure includes the bedplate (1), bearing fitting (2), end cap (3), stator (4), air-air cooler (5), the outer fan (6), fan housing (7), rolling (8), outlet box (9). The highest surface temperature of the shell controlled below 150 degree centigrade, the internal highest surface temperature controlled below 300 degree centigrade, besides the electric motor carries on the dampproof handling. The invention beneficial efficiency is that supply an explosion-proof motor for the underground mining, the motor has simple structure, reliable explosion-proof performance, and fulfilled the mine safety code require.
Description
Technical field the present invention relates to the flame-proof motor that uses under a kind of coal mine, especially relates to a kind of security-enhanced three-phase asynchronous motor for mine.
The present increased safety three-phase induction motor of background technology can only be used for factory 2 districts, and the increased-safety motor field of employment explosive gas atmosphere can not occur during for normal operation, if also be to take place once in a while and only be the place that exists the short time.Under the coal mine be imflammable gas (gas) and combustible dust (coal dust) simultaneously and the environment of depositing, and relative humidity surpasses 90% under the mine, is wet environment, therefore, increased-safety motor can not be directly used under the coal mine.
Summary of the invention the present invention can not be directly used in problem under the coal mine in order to solve existing increased-safety motor, the invention provides a kind of new type explosion proof motor, promptly mining increased-safety motor.This motor can be used for the place except that return airway and getting working face under the coal mine, has explosion-proof, dustproof and humidity resistance.
Technical scheme of the present invention is: security-enhanced three-phase asynchronous motor for mine comprises stator, support, rotor, end cap, air-air cooler, bearing assembling, fan housing, external fan, outlet box.Motor adopts steel plate to weld box support, and there is fresh air inlet at two ends, support top, and there is exhaust vent at the middle part, on the stator and rotor iron core radial ducts is arranged, and air-air cooler is fixed at the support top, and the cooler bottom has with the support top advances the corresponding ventilation hole of exhaust vent.During the motor rotation, exhaust vent on support enters air-air cooler to hot blast from stator core and end winding, and carrying out in air-air cooler becomes cooling air after the heat exchange, enters motor interior respectively from the two ends fresh air inlet, to cooler, so circulation forms interior wind through rotor, stator.Form air-air cooling structure like this.
Motor adopts dust cover, and sealing gasket is adopted in the sealing of junction, plane, promptly fills up elastic sealing gasket between two rigid planes, and is fastening again; The sealing that cylinder cooperates adopts seam to add the bolt connection.Bearing end cover adopts multilayer labyrinth type labyrinth seal with the sealing of axle.Like this, effectively limit coal dust and entered motor interior.Maximum surface temperature is considered from two aspects: one, shell maximum surface temperature are 150 ℃; Its two, the limit value of other maximum surface temperatures is considered the ignition temperature of methane gas and the heat resisting temperature of material that motor adopts, and is 300 ℃.Motor carries out the protection against the tide processing in addition.
Beneficial effect of the present invention: be for a kind of flame-proof electric motor is provided under the coal mine, this electric motor structure is simple, and explosion-proof performance is reliable, and satisfies the requirement of safety regulations in coal mine.
Description of drawings is described in further detail the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is a mining increased-safety motor overall structure schematic diagram of the present invention.
Fig. 2 is an air-air cooler shown in Figure 1 (5) and support (1) schematic diagram that is tightly connected.
Fig. 3 is support shown in Figure 1 (1) side plate and outlet box (9) the mouth schematic diagram that is tightly connected.
Fig. 4 is bearing end cover shown in Figure 1 (15) and axle (17) sealing schematic diagram.
The described mining increased-safety motor overall structure of embodiment Fig. 1 comprises support (1), bearing assembling (2), end cap (3), stator (4), air-air cooler (5), external fan (6), fan housing (7), rotor (8), outlet box (9).There is fresh air inlet at support (1) two ends, top, there is exhaust vent at the middle part, on stator (4), rotor (8) iron core radial ducts is arranged, and air-air cooler (5) is fixed at support (1) top, the cooler bottom has with the support top advances the corresponding ventilation hole of exhaust vent, forms air-air cooling structure.Fig. 2 is that air-air cooler (5) is tightly connected with support (1), air-air cooler (5) is gone up the plane that links to each other with support (1) and is adopted rigid frame (10), support (1) is gone up the plane through machine work, middle pad is with double-deck elastic sealing gasket (11), framework (10) possesses enough width and thickness, guarantees that fit fully in the last plane of elastic sealing gasket (11) and framework (10) and support (1) and framework (10) self does not produce distortion.Fig. 3 is that support (1) side plate and outlet box (9) mouth are tightly connected, be welded with quadra (14) on support (1) side plate, the surface is through machine work, outlet box (9) is gone up the framework that interface (12) is welded into the edge, inner plane is through machine work, middle pad is used bolted again with elastic sealing gasket (13).Fig. 4 is bearing end cover (15) and axle (17) sealing, bearing end cover (15) and locking nut (16) are designed to have the concavo-convex combination of little play, bearing end cover (15) is fixed in the bearing assembling (2), locking nut (16) is fastened in the rotating shaft (17), rotate with rotating shaft (17), form the multilayer labyrinth seal, the play radial direction of labyrinth seal is 0.5～1.5mm, and axial direction is 2～5mm.
Motor adopts the F class F insulation, and the examination of B level is pressed in temperature rise, and the stator winding temperature limit is no more than 80K with electric-resistivity method, is no more than 90K with embedding thermometry meter method, at t
EDuring expiration, limiting temperature is no more than 210 ℃; Rotor surface temperature is no more than 250 ℃ during starting, and limiting temperature is no more than 300 ℃; The bearing allowable temperature is no more than 95 ℃; The electric heating tube maximum surface temperature is no more than 240 ℃; The temperature at cable intake place is no more than 70 ℃; The shell maximum surface temperature is no more than 150 ℃.Be directly used in the security-enhanced three-phase asynchronous motor for mine under the coal mine, the design of motor housing maximum surface temperature is controlled to be below 150 ℃, and the design of motor internal maximum temperature is controlled to be below 300 ℃.
Handle through protection against the tide, carry out after 40 ℃ of cyclic damp heat test methods carry out 21d test, examination motor electrical insulation properties, the insulating resistance value when stator winding is hot is not less than 2 times of standard insulating resistance value, and the withstand voltage test value is 85% of a standard withstand voltage test value.
Claims (3)
1, a kind of security-enhanced three-phase asynchronous motor for mine, comprise stator (4), support (1), rotor (8), end cap (3), air-air cooler (5), bearing assembling (2), fan housing (7), external fan (6), outlet box (9), it is characterized by: motor adopts steel plate to weld box support, there is fresh air inlet at support (1) two ends, top, there is exhaust vent at the middle part, on the stator and rotor iron core radial ducts is arranged, air-air cooler (5) is fixed at support (1) top, and air-air cooler (5) bottom has with the support top advances the corresponding ventilation hole of exhaust vent; Be directly used in the security-enhanced three-phase asynchronous motor for mine under the coal mine, the design of motor housing maximum surface temperature is controlled to be below 150 ℃, and the design of motor internal maximum surface temperature is controlled to be below 300 ℃.
2, security-enhanced three-phase asynchronous motor for mine as claimed in claim 1, it is characterized by: rigid frame is adopted on the plane that plane that air-air cooler (5) links to each other with support (1) and support (1) side plate link to each other with outlet box (9) interface (12), and middle pad is with elastic sealing gasket.
3, security-enhanced three-phase asynchronous motor for mine as claimed in claim 1 or 2 is characterized by: bearing end cover (15) and locking nut (16) are designed to have the concavo-convex combination of little play.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710034764 CN101034837A (en) | 2007-04-19 | 2007-04-19 | Security-enhanced three-phase asynchronous motor for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710034764 CN101034837A (en) | 2007-04-19 | 2007-04-19 | Security-enhanced three-phase asynchronous motor for mine |
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| Publication Number | Publication Date |
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| CN101034837A true CN101034837A (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710034764 Pending CN101034837A (en) | 2007-04-19 | 2007-04-19 | Security-enhanced three-phase asynchronous motor for mine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202475B (en) * | 2007-10-31 | 2010-06-09 | 哈尔滨电机厂有限责任公司 | Composite structure electricity generator stator stand |
| CN101834490A (en) * | 2010-05-04 | 2010-09-15 | 浙江尔格科技有限公司 | Cooler of wind power generator |
| CN102290922A (en) * | 2011-09-06 | 2011-12-21 | 永济新时速电机电器有限责任公司 | Double-fed wind generator |
| CN101860100B (en) * | 2009-04-08 | 2013-12-18 | 金亦石 | Permanent magnetic synchronous motor |
| CN105391220A (en) * | 2015-12-15 | 2016-03-09 | 卧龙电气南阳防爆集团股份有限公司 | High-voltage explosion-proof three-phase asynchronous motor with low temperature rise |
| CN108768072A (en) * | 2017-04-05 | 2018-11-06 | 西门子风力发电公司 | Rotor machine with cooling system |
| CN110868822A (en) * | 2019-11-13 | 2020-03-06 | 徐州筑之邦工程机械有限公司 | Gas curtain isolated type mining explosion-proof safety control host |
-
2007
- 2007-04-19 CN CN 200710034764 patent/CN101034837A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202475B (en) * | 2007-10-31 | 2010-06-09 | 哈尔滨电机厂有限责任公司 | Composite structure electricity generator stator stand |
| CN101860100B (en) * | 2009-04-08 | 2013-12-18 | 金亦石 | Permanent magnetic synchronous motor |
| CN101834490A (en) * | 2010-05-04 | 2010-09-15 | 浙江尔格科技有限公司 | Cooler of wind power generator |
| CN101834490B (en) * | 2010-05-04 | 2013-07-17 | 浙江尔格科技有限公司 | Cooler of wind power generator |
| CN102290922A (en) * | 2011-09-06 | 2011-12-21 | 永济新时速电机电器有限责任公司 | Double-fed wind generator |
| CN105391220A (en) * | 2015-12-15 | 2016-03-09 | 卧龙电气南阳防爆集团股份有限公司 | High-voltage explosion-proof three-phase asynchronous motor with low temperature rise |
| CN105391220B (en) * | 2015-12-15 | 2018-06-22 | 卧龙电气南阳防爆集团股份有限公司 | A kind of high-pressure explosion-proof type three-phase asynchronous of low-temperature-rise |
| CN108768072A (en) * | 2017-04-05 | 2018-11-06 | 西门子风力发电公司 | Rotor machine with cooling system |
| CN110868822A (en) * | 2019-11-13 | 2020-03-06 | 徐州筑之邦工程机械有限公司 | Gas curtain isolated type mining explosion-proof safety control host |
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Open date: 20070912 |