CN207082944U - A kind of composite anti-explosion type threephase asynchronous - Google Patents
A kind of composite anti-explosion type threephase asynchronous Download PDFInfo
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- CN207082944U CN207082944U CN201720926789.2U CN201720926789U CN207082944U CN 207082944 U CN207082944 U CN 207082944U CN 201720926789 U CN201720926789 U CN 201720926789U CN 207082944 U CN207082944 U CN 207082944U
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Abstract
The utility model discloses a kind of composite anti-explosion type threephase asynchronous, it includes support, stator in support and the rotor with stator gap cooperation installation, rotor is fixedly mounted in rotating shaft, end cap is correspondingly provided with respectively in the front and back end of support, bearing is equipped between end cap and rotating shaft, and bearing internal external side is correspondingly provided with internal bearing cover and bearing end cover respectively, the bearing end cover is with being provided with the explosion separation structure for preventing combustible dust from entering bearing chamber or motor internal at rotating shaft cooperation, explosion separation structure includes being set in rotating shaft and with the oil sealing of rotating shaft interference fit and positioned at oil sealing inner side and the first flameproof joint formed at bearing end cover and rotating shaft cooperation；The second flameproof joint is respectively formed at the cooperation of internal bearing cover and support and at the cooperation of end cap and support；The 3rd flameproof joint is formed at the cooperation of internal bearing cover and rotating shaft.Blast resistance construction reliability of the present utility model is high, while meets that dust explosion protection and gas are explosion-proof, ensures equipment safety operation.
Description
Technical field
High efficiency combustible dust and explosibility gaseous environment motor are the utility model is related to, more particularly to it is a kind of multiple
Close explosion proof three-phase asynchronous motor.
Background technology
With raising of the international community to green economy, the low-carbon economy degree of awareness, various countries vigorously promote the use efficient electric
Machine, China disclose " detailed rules for the implementation of high-efficiency electric motor product promotion " on May 31st, 2010 by the Ministry of Finance, the Committee of Development and Reform, this
The release of one policy, the popularization to China's efficient high-pressure threephase asynchronous serve facilitation.
YBFBX series of high efficiency rate composite anti-explosion types threephase asynchronous is (hereinafter referred to as：YBFBX Series Motors), fit
It is T1~T4 groups for factory temperature group, there are the explosion hazard that explosive gas and combustible dust mixture coexist
Environment.It can effectively solve the explosive gas occurred in current direct liquefaction project, coal liquefaction unit and coal Hydrogen Unit and
The explosion hazard place that combustible dust mixture coexists, traditional composite anti-explosion electric efficiency is low, and axle insertion portion is adopted
Reach the purpose for preventing dust from entering motor internal with skeleton oil seal, long-term use of outside framework oil seal can be because of the high speed of motor
Operating causes to wear and lose barrier propterty, causes dust explosion protection performance failure, has a strong impact on equipment safety.
Therefore, this is just there is an urgent need to design a kind of new composite anti-explosion type threephase asynchronous, to solve traditional answer
Conjunction fire-proof motor blast resistance construction reliability is low, has a strong impact on the problem of equipment safety.
Utility model content
The utility model is in order to solve the problems of the prior art, there is provided a kind of high composite anti-explosion of blast resistance construction reliability
Type threephase asynchronous.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：A kind of composite anti-explosion type is phase asynchronous
Motor, it includes support, the stator in support and the rotor for coordinating installation with stator gap, and rotor is fixedly mounted
In rotating shaft, end cap is correspondingly provided with respectively in the front and back end of support, and bearing, and bearing internal external side are equipped between end cap and rotating shaft
Internal bearing cover and bearing end cover are correspondingly provided with respectively, and the bearing end cover prevents combustible dust from entering with being provided with rotating shaft cooperation
The explosion separation structure of bearing chamber or motor internal, explosion separation structure include being set in rotating shaft and with the oil sealing of rotating shaft interference fit and
The first flameproof joint formed on the inside of oil sealing and at bearing end cover and rotating shaft cooperation, oil sealing is fixed with bearing end cover to be connected
Connect, the bearing end cover at the first flameproof joint and rotating shaft are fitted close, and the axial length of the first flameproof joint is more than etc.
In 17mm, the radial clearance of the first flameproof joint is less than or equal to 0.314mm；
It is respectively formed the second flameproof joint at the cooperation of internal bearing cover and support and at the cooperation of end cap and support, second
Flameproof joint is made up of the section with the gap of motor internal and the tight fit section close to outside motor, and gap coordinates section
The internal bearing cover at place coordinates with support and end cap with the equal gap of support, the internal bearing cover being fitted close at section and support and end
Lid is fitted close with support, and the axial length of second flameproof joint is more than or equal to 25mm, the second flameproof joint
Radial clearance be less than or equal to 0.1mm；
Form the 3rd flameproof joint at the cooperation of internal bearing cover and rotating shaft, the internal bearing cover at the 3rd flameproof joint with
Rotating shaft is fitted close, and the axial length of the 3rd flameproof joint is more than or equal to 25mm, the radial direction of the 3rd flameproof joint
Gap is less than or equal to 0.25mm.
The internal bearing cover external diameter being fitted close at section is more than gap and coordinates internal bearing cover external diameter at section, and both it
Between formed radial direction facade.
The end cap external diameter being fitted close at section is more than the end cap external diameter at gap cooperation section, and forms footpath between the two
To facade.
It also includes terminal box, and terminal box is arranged at support line outlet, and forms week at the cooperation of terminal box and support
To the 4th flameproof joint, and the vertical extension of the 4th flameproof joint is more than or equal to 25mm, the week of the 4th flameproof joint
It is less than or equal to 0.1mm to gap.
The set-up mode that the oil sealing is fixedly connected with bearing end cover is as follows：Bearing end cover, which is provided with, to be used to install oil sealing
Seal groove, oil sealing are fixed and are fastened in the seal groove.
The oil sealing is outside framework oil seal.
The beneficial effects of the utility model are：
1st, being provided with the utility model middle (center) bearing enclosing cover and rotating shaft cooperation prevents combustible dust from entering bearing chamber or motor
Internal explosion separation structure, explosion separation structure include being set in rotating shaft and with the oil sealing of rotating shaft interference fit and on the inside of oil sealing
And the first flameproof joint formed at bearing end cover and rotating shaft cooperation, can effectively prevent combustible dust enter bearing chamber and
Motor internal, in the case that oil sealing wears because of long-term use, gap and length requirement by axle insertion portion（Outside bearing
Gap and length between lid and rotating shaft：The axial length of first flameproof joint is more than or equal to 17mm, the first flameproof joint
Radial clearance be less than or equal to 0.314mm；）The flame proof ability of the first flameproof joint is realized, it is flammable still to reach prevention
Dust enters the effect of bearing chamber and motor internal.
2. it is respectively formed second at the cooperation of the utility model middle (center) bearing inner cap and support and at the cooperation of end cap and support
Flameproof joint, the second flameproof joint is from the section with the gap of motor internal and the tight fit section close to outside motor
Composition, gap coordinate the internal bearing cover at section to coordinate with support and end cap with the equal gap of support, the bearing being fitted close at section
Inner cap is fitted close with support and end cap with support, and the axial length of second flameproof joint is more than or equal to
25mm, the radial clearance of the second flameproof joint are less than or equal to 0.1mm；The 3rd flame proof is formed at the cooperation of internal bearing cover and rotating shaft
Composition surface, the internal bearing cover at the 3rd flameproof joint is fitted close with rotating shaft, and the axial direction of the 3rd flameproof joint is long
Degree is more than or equal to 25mm, and the radial clearance of the 3rd flameproof joint is less than or equal to 0.25mm, by controlling above-mentioned second flame proof to connect
The gap and length of conjunction face and the 3rd flameproof joint, meet national explosion-proof criteria GB3836 regulation, even if reaching flammable
Gas motor internally explodes, and explosions are also not transferred to the blast for causing extraneous gas in the external world.
3. the utility model also includes terminal box, terminal box is arranged at support line outlet, and terminal box and support are matched somebody with somebody
The 4th circumferential flameproof joint is formed at conjunction, and the vertical extension of the 4th flameproof joint is more than or equal to 25mm, the 4th flame proof
The circular gap on composition surface is less than or equal to 0.1mm, further improves flame proof ability.
4. the utility model is simple in construction, easy to implement, it disclosure satisfy that while in combustible dust and explosibility gas
The motor of body environment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the utility model middle (center) bearing enclosing cover and the structural representation at rotating shaft cooperation；
Fig. 3 is the utility model middle (center) bearing inner cap and the structural representation at support cooperation；
Fig. 4 is the structural representation at the cooperation of end cap and support in the utility model；
Fig. 5 is the structural representation at the cooperation of terminal box and support in the utility model.
Embodiment
As shown in Figures 1 to 5, a kind of composite anti-explosion type threephase asynchronous of the present utility model, it include support 1,
Stator 2 in support 1 and the rotor 3 with the cooperation installation of the gap of stator 2, rotor 3 are fixedly mounted in rotating shaft 4,
The front and back end of support 1 is correspondingly provided with end cap 5 respectively, and bearing 6 is equipped between end cap 5 and rotating shaft 4, and outside difference in bearing 6
It is correspondingly provided with internal bearing cover 7 and bearing end cover 8.
Be provided with the bearing end cover 8 and the cooperation of rotating shaft 4 prevent combustible dust enter bearing chamber or motor internal every
Quick-fried structure, explosion separation structure include being set in rotating shaft 4 and with the outside framework oil seal 9 of the interference fit of rotating shaft 4 and positioned at outside framework oil seal 9
Inner side and the first flameproof joint A formed at bearing end cover 8 and the cooperation of rotating shaft 4, outside framework oil seal 9 are fixed with bearing end cover 8
Connect, the bearing end cover 8 at the first flameproof joint A is fitted close with rotating shaft 4, and the first explosion-proof faying face A axial length L
More than or equal to 17mm, the first flameproof joint A radial clearance is less than or equal to 0.314mm（I.e. bearing end cover axis hole dimension D 2 with
The difference of spindle outer diameter dimension D 1 is less than or equal to 0.314mm）.
The set-up mode that outside framework oil seal 9 described in the present embodiment is fixedly connected with bearing end cover 8 is as follows：On bearing end cover 8
Provided with the seal groove for mounting framework oil sealing 9, outside framework oil seal 9 is fixed and is fastened in the seal groove.
The setting of above-mentioned explosion separation structure can effectively prevent combustible dust from entering bearing chamber and motor internal, even in oil sealing
In the case of being worn because of long-term use, gap and length requirement by axle insertion portion（I.e. by controlling bearing end cover axis hole chi
Very little D2 dimensional tolerance and the dimensional tolerance of spindle outer diameter dimension D 1, and the length L of explosion-proof faying face）Realize the first flame proof
Composition surface A flame proof ability, it can still have the function that to prevent combustible dust from entering bearing chamber and motor internal.
Internal bearing cover 7 is with forming the second flameproof joint B1, the second flameproof joint B1 by close to electricity at the cooperation of support 1
Gap inside machine coordinates section E2 and the tight fit section E1 close to outside motor to form, and gap coordinates the internal bearing cover at section E2
7 coordinate with the gap of support 1, are fitted close the internal bearing cover 7 at section E1 and are fitted close with support 1, and second flame proof engages
Face B1 axial length is more than or equal to 25mm, and the second flameproof joint B1 radial clearance is less than or equal to 0.1mm.It is and described tight
The external diameter of internal bearing cover 7 at close fit section is more than the external diameter of internal bearing cover 7 at gap cooperation section, and is formed between the two radially vertical
Face.
End cap 5 is with forming the second flameproof joint B2, the second flameproof joint B2 by motor at 1 cooperation of support
The gap in portion coordinates section E2 and the tight fit section E1 close to outside motor to form, and gap coordinates the end cap 5 and support 1 at section E2
Gap coordinates, and is fitted close the end cap 5 at section E1 and is fitted close with support 1, and the axial direction of the second flameproof joint B2 is long
Degree is more than or equal to 25mm, and the second flameproof joint B radial clearance is less than or equal to 0.1mm.And at the tight fit section
The external diameter of end cap 5 is more than the external diameter of end cap 5 at gap cooperation section, and forms radial direction facade between the two.
The 3rd flameproof joint C is formed at the cooperation of internal bearing cover 7 and rotating shaft 4, in the bearing at the 3rd flameproof joint C
Lid 7 is fitted close with rotating shaft 4, and the axial length of the 3rd flameproof joint C is more than or equal to 25mm, the 3rd flameproof joint
C radial clearance is less than or equal to 0.25mm.
The utility model also includes terminal box 10, and terminal box 10 is arranged at the line outlet of support 1, and terminal box 10 and support
The 4th circumferential flameproof joint D is formed at 1 cooperation, and the 4th flameproof joint D vertical extension is more than or equal to 25mm, the
Four flameproof joint D circular gap is less than or equal to 0.1mm.
The utility model is by controlling above-mentioned second flameproof joint, the 3rd flameproof joint and the 4th flameproof joint
Gap and length, meet national explosion-proof criteria GB3836 regulation, are internally exploded even if reaching imflammable gas motor,
Explosions are also not transferred to the blast for causing extraneous gas in the external world.
The utility model is simple in construction, easy to implement, blast resistance construction reliability is high, while meets dust explosion protection and preventing gas
It is quick-fried, it disclosure satisfy that while in combustible dust and the motor of explosibility gaseous environment.
Above example is only to illustrative and not limiting the technical solution of the utility model, although with reference to above-described embodiment pair
The utility model is described in detail, it will be understood by those within the art that：The utility model can still be entered
Row modification or equivalent substitution, without departing from any modification or partial replacement of spirit and scope of the present utility model, it all should
Cover among right of the present utility model.
Claims (6)
1. a kind of composite anti-explosion type threephase asynchronous, it includes support, the stator in support and between stator
Gap coordinates the rotor of installation, and rotor is fixedly mounted in rotating shaft, is correspondingly provided with end cap respectively in the front and back end of support, end cap is with turning
Bearing is equipped between axle, and bearing internal external side is correspondingly provided with internal bearing cover and bearing end cover respectively, it is characterised in that：The axle
Enclosing cover is held with being provided with the explosion separation structure for preventing combustible dust from entering bearing chamber or motor internal, explosion separation structure bag at rotating shaft cooperation
Include and be set in rotating shaft and with the oil sealing of rotating shaft interference fit and on the inside of oil sealing and at bearing end cover and rotating shaft cooperation
The first flameproof joint formed, oil sealing are fixedly connected with bearing end cover, bearing end cover and rotating shaft at the first flameproof joint
It is fitted close, and the axial length of the first flameproof joint is more than or equal to 17mm, the radial clearance of the first flameproof joint is less than
Equal to 0.314mm；
The second flameproof joint, the second flame proof are respectively formed at the cooperation of internal bearing cover and support and at the cooperation of end cap and support
Composition surface is made up of the section with the gap of motor internal and the tight fit section close to outside motor, and gap coordinates at section
Internal bearing cover and support and end cap coordinate with the equal gap of support, be fitted close internal bearing cover at section and support and end cap with
Support is fitted close, and the axial length of second flameproof joint is more than or equal to 25mm, the footpath of the second flameproof joint
It is less than or equal to 0.1mm to gap；
Form the 3rd flameproof joint at the cooperation of internal bearing cover and rotating shaft, internal bearing cover and rotating shaft at the 3rd flameproof joint
It is fitted close, and the axial length of the 3rd flameproof joint is more than or equal to 25mm, the radial clearance of the 3rd flameproof joint
Less than or equal to 0.25mm.
2. composite anti-explosion type threephase asynchronous according to claim 1, it is characterised in that：At the tight fit section
Internal bearing cover external diameter be more than gap coordinate section at internal bearing cover external diameter, and between the two formed radial direction facade.
3. composite anti-explosion type threephase asynchronous according to claim 1 or 2, it is characterised in that：The tight fit
End cap external diameter at section is more than the end cap external diameter at gap cooperation section, and forms radial direction facade between the two.
4. composite anti-explosion type threephase asynchronous according to claim 3, it is characterised in that：It also includes terminal box,
Terminal box is arranged at support line outlet, and the 4th circumferential flameproof joint is formed at the cooperation of terminal box and support, and the
The vertical extension of four flameproof joints is more than or equal to 25mm, and the circular gap of the 4th flameproof joint is less than or equal to 0.1mm.
5. composite anti-explosion type threephase asynchronous according to claim 3, it is characterised in that：Outside the oil sealing and bearing
It is as follows to cover the set-up mode being fixedly connected：Bearing end cover is provided with the seal groove for being used for installing oil sealing, and oil sealing is fixed and is fastened on institute
State in seal groove.
6. composite anti-explosion type threephase asynchronous according to claim 5, it is characterised in that：The oil sealing is skeleton oil
Envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926789.2U CN207082944U (en) | 2017-07-28 | 2017-07-28 | A kind of composite anti-explosion type threephase asynchronous |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720926789.2U CN207082944U (en) | 2017-07-28 | 2017-07-28 | A kind of composite anti-explosion type threephase asynchronous |
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| CN207082944U true CN207082944U (en) | 2018-03-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342647A (en) * | 2017-07-28 | 2017-11-10 | 卧龙电气集团股份有限公司 | A kind of composite anti-explosion type threephase asynchronous |
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- 2017-07-28 CN CN201720926789.2U patent/CN207082944U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342647A (en) * | 2017-07-28 | 2017-11-10 | 卧龙电气集团股份有限公司 | A kind of composite anti-explosion type threephase asynchronous |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 312300 Shangyu Economic Development Zone, Shaoxing City, Zhejiang Province Co-patentee after: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP CO., LTD. Patentee after: Wolong Electric Drive Group Co., Ltd. Address before: 312300 Shangyu Economic Development Zone, Shaoxing City, Zhejiang Province Co-patentee before: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP CO., LTD. Patentee before: Wolong Electric Group Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |