CN104362824A - Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor - Google Patents
Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor Download PDFInfo
- Publication number
- CN104362824A CN104362824A CN201410732271.6A CN201410732271A CN104362824A CN 104362824 A CN104362824 A CN 104362824A CN 201410732271 A CN201410732271 A CN 201410732271A CN 104362824 A CN104362824 A CN 104362824A
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- Prior art keywords
- motor
- ring
- sealing ring
- positive pressure
- support
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/12—Asynchronous induction motors for multi-phase current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Abstract
The invention discloses a low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor. The upper side of the base of the motor is provided with a water cooler; a relief valve is arranged at the inlet of the water cooler; a square key and a sealing gasket are arranged between the base of the motor and the housing of the water cooler; the height of the gasket is higher than that of the squire key; a lead hole is formed in the base of the motor; a cable gland is provided on the lead hole. An internal bearing cover is inserted in a rotating shaft of the motor; the internal bearing cover is provided with an annular cavity; a carbon seal ring is provided within the annular cavity; the surface of the inner ring of the carbon seal ring is in contact with that of the outer ring of the rotating shaft of the motor; two ends of the carbon seal ring are in contact respectively with the walls of the two chambers of the annular cavity. An axially extending fixing bolt is arranged on the internal bearing cover; the fixing bolt is inserted through the carbon seal ring through a positioning groove. The invention aims at providing a low-center high-capacity high-speed positive pressure ventilation type high-pressure explosion-proof motor which is safe and reliable, good in sealing performance and long in service life.
Description
Technical field
The invention belongs to the phase asynchronous flame-proof electric motor technical field of positive pressure ventilation type, particularly relate to a kind of low center height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor.
Background technology
Current China be used for oil, chemical industry etc. 2 the large-scale explosion-proof three-phase asynchronous motor of district's explosion hazard area be mostly increased safety three-phase induction motor, owing to being subject to tE time restriction, add the enforcement of GB3836.3-2010 INCREASEDSAFETY new standard, bring certain difficulty to the design of increased-safety motor and production.Positive voltage type anti-explosion motor is a kind of explosion-proof type motor being applicable to 1st district or 2 district's explosive gas atmospheres, and owing to having broken away from tE time restriction, make the Capacity design of positive voltage type anti-explosion motor have also been obtained significant increase, a lot of user adopts positive pressure type motor to substitute increased-safety motor.The development of large-scale positive draft type explosion-proof motor is very urgent.
Summary of the invention
The object of this invention is to provide a kind of safe and reliable, good airproof performance and the low center height high-capacity and high-speed positive pressure ventilation type voltage explosion-resistant motor of long service life.
For achieving the above object, the present invention adopts following technical scheme: a kind of low center height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor, positive pressure ventilation blow device is provided with outside the support of motor, the upside of the support of motor is provided with water cooler, the gas outlet place of water cooler is provided with relief valve, square key and sealing gasket is provided with between the support and the shell of water cooler of motor, sealing gasket is rectangular box shape, square key to be positioned at outside sealing gasket and to arrange along sealing gasket outer edge successively interval, square key is installed on the support of motor, the support of motor with between sealing gasket and the shell of water cooler be between sealing gasket bonding, the height of described sealing gasket is higher than the height of square key, the support of described motor is provided with extraction string holes, draws string holes and is provided with gland head, the rotating shaft of motor is plugged with internal bearing cover, internal bearing cover is provided with ring-shaped chamber, carbon sealing ring is provided with in ring-shaped chamber, outer ring sleeve around carbon sealing ring is provided with tension sealing ring, one of them end face of carbon sealing ring is provided with location notch, described carbon sealing ring is set in the outer ring of motor rotary shaft, the inner peripheral surface of carbon sealing ring contacts with motor rotary shaft outer peripheral surface, the both ends of the surface of carbon sealing ring contact with two chamber walls of ring-shaped chamber respectively, internal bearing cover is provided with axially extended set bolt, and set bolt end is stretched in the location notch of carbon sealing ring.
Outer peripheral surface around carbon sealing ring is provided with the mounting groove of annular, and described back-moving spring circle is arranged in mounting groove.
Described back-moving spring circle is stainless steel coil.
One of the present invention low center height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor; by reliable malleation purging system---positive pressure ventilation blow device and relief valve; effectively can complete purging before starting, operation pressurize and the chain warning of decompression or shutdown, ensure the safe operation of motor.The leading-out wire structure of this motor, adopts gland head Sealing Technology, ensures sealing.For the axle through portion of axle and bearing fit, because malleation motor chamber pressure is greater than external atmosphere pressure, and axle and bearing do relative motion during motor operation, it is matched in clearance between axle and bearing, this gap often causes a large amount of leakages of malleation motor interior gas, in order effectively to reduce, even to reach axle through air tight, ensures movable sealing, prevent motor interior barotropic gas from the through leakage of axle by the mode increasing carbon sealing ring on internal bearing cover.Carbon sealing ring under the effect of back-moving spring circle with shaft contacts, when the shaft is rotated, under the effect of set bolt being stuck in carbon sealing ring location notch, carbon sealing ring keep static, contact by axle and carbon sealing ring moment and ensure gas tightness.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of sealing gasket and square key;
Fig. 3 is the structural representation of lead-out wire on support;
Fig. 4 is the structural representation of bearing and internal bearing cover;
Fig. 5 is the structural representation of carbon sealing ring.
Embodiment
By the one low center height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor shown in Fig. 1-Fig. 5, comprise the support 5 of motor, stator 7, rotor and rotating shaft 6 is provided with in support 5, the front end of rotating shaft 6 is rotating shaft 6 output and stretches out outside the support 5 of motor, rotating shaft 6 is arranged on support 5 by two bearings 12, the rotating shaft 6 of motor is plugged with internal bearing cover 19, this internal bearing cover 19 is installed in the side of set bearing 12 between rotating shaft 6 rear portion and support 5, internal bearing cover 19 is annular, and rotating shaft 6 is inserted through from the annular distance of internal bearing cover 19.
Positive pressure ventilation blow device and terminal box (positive pressure ventilation blow device and terminal box not shown) is provided with outside the support 5 of motor, positive pressure ventilation blow device is arranged on the outer surface of one of them sidewall of support 5, the upside of the support 5 of motor is installed with water cooler 2, and the gas outlet place of water cooler 2 is provided with relief valve 1.The stator 7 of described motor, rotor, rotating shaft 6, positive pressure ventilation blow device, terminal box and the position syndeton between internal bearing cover 19 and support 5 are prior art, therefore do not describe in detail.
The bottom surface of the shell of water cooler 2 and the end face of motor bed-plate 5 are up and down just to setting, between the support 5 and the shell of water cooler 2 of motor, be provided with square key 3 and sealing gasket 4, namely square key 3 and sealing gasket 4 are all between the bottom surface of the shell of water cooler 2 and the end face of motor bed-plate 5.Sealing gasket 4 is rectangular box shape, square key 3 arranges several, square key 3 to be positioned at outside sealing gasket 4 and to arrange along sealing gasket 4 outer edge successively interval, square key 3 is installed on the support 5 of motor, and square key 3 is for being welded to connect on the end face of the support 5 of motor, the support 5 of motor with between sealing gasket 4 and the shell of water cooler 2 be between sealing gasket 4 bonding, namely the upper surface of sealing gasket 4 is bonding with the bottom surface of the shell of water cooler 2, and the lower surface of sealing gasket 4 is also bonding with the end face of the support 5 of motor.The height of described sealing gasket 4 is higher than the height of square key 3, and sealing gasket 4 is highly 13mm, and square key 3 height is 8mm.The support of square key 3, makes the decrement of sealing gasket 4 receive control, serves protective effect again, add life-span and the reliability of sealing gasket 4 while guarantee sealing gasket 4 sealing property to sealing gasket 4.
The support 5 of described motor is provided with extraction string holes, described extraction string holes comprises main lead hole 10, thermometric draws string holes 9 and heater leads hole 8, all extraction string holes are screwed hole, each extraction string holes is all threaded a gland head 11, gland head 11 is provided with the external screw thread for being threaded with corresponding extraction string holes, lead-out wire stretches out outside support 5 by corresponding gland head 11 of drawing string holes connection, i.e. main lead, thermometric lead-out wire and heater leads are respectively by the gland head 11 in corresponding main lead hole 10, the gland head 11 that the gland head 11 that thermometric draws string holes 9 is connected with heater leads hole 8 is stretched out outside support 5.Described gland head 11Cable gland(has another name called Waterproof connector of cable, cable fixing head Cable fixed head and cable joint Cable joint) be widely used in plant equipment electrically, the fixing and protection of the electric wire of marine electrical equipment, corrosion protection equipment; gland head 11 is prior art, therefore does not describe in detail.
The rotating shaft 6 of motor is plugged with internal bearing cover 19, internal bearing cover 19 is provided with ring-shaped chamber 14, internal bearing cover 19 is annular, the interior annular distance of internal bearing cover 19 is also circular hole, internal bearing cover 19 is provided with two cannelures along its inner ring surface, two cannelures are that axial time interval is arranged, and the cannelure being wherein positioned at rear side is described ring-shaped chamber 14.
Carbon sealing ring 16 is provided with in described ring-shaped chamber 14, outer ring sleeve around carbon sealing ring 16 is provided with tension sealing ring, outer peripheral surface around carbon sealing ring 16 is provided with the mounting groove of annular, and described back-moving spring circle 15 is arranged in mounting groove, and described back-moving spring circle 15 is stainless steel coil.The rear end face of carbon sealing ring 16 is provided with location notch 18, described carbon sealing ring 16 is set in the outer ring of motor rotary shaft 6, the inner peripheral surface of carbon sealing ring 16 contacts with motor rotary shaft 6 outer peripheral surface and fits, and the face, rear and front end of carbon sealing ring 16 contacts with front and back two chamber wall of ring-shaped chamber 14 respectively.
Next door part is provided with between described ring-shaped chamber 14 and another cannelure 13 of internal bearing cover 19, on internal bearing cover 19, bolt is connected with axially extended set bolt 17, the lid mouth of internal bearing cover 19 is towards front, the bolt head of set bolt 17 is blocked in outside the rear side of internal bearing cover 19, set bolt 17 axially stretches out forward and set bolt 17 end is stretched in the location notch 18 of carbon sealing ring 16, certainly, the corresponding set bolt 17 of internal bearing cover 19 is provided with bolt hole, and set bolt 17 is threaded on internal bearing cover 19 by bolt hole.
One of the present invention low center height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor; by reliable malleation purging system---positive pressure ventilation blow device and relief valve 1; effectively can complete purging before starting, operation pressurize and the chain warning of decompression or shutdown, ensure the safe operation of motor.The leading-out wire structure of this motor, adopts gland head 11 Sealing Technology, ensures sealing.For the axle through portion that axle coordinates with bearing 12, because malleation motor chamber pressure is greater than external atmosphere pressure, and axle and bearing 12 do relative motion during motor operation, it is matched in clearance between axle and bearing 12, this gap often causes a large amount of leakages of malleation motor interior gas, in order effectively to reduce, even to reach axle through air tight, ensures movable sealing, prevent motor interior barotropic gas from the through leakage of axle by the mode increasing carbon sealing ring 16 on internal bearing cover 19.Carbon sealing ring 16 contacts with rotating shaft 6 under the effect of back-moving spring circle 15, when the shaft is rotated, under the effect of set bolt 17 being stuck in carbon sealing ring 16 location notch 18, carbon sealing ring 16 keeps static, is contacted by axle and carbon sealing ring 16 moment and is ensured gas tightness.
Claims (3)
1. a Zhong Di center height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor, positive pressure ventilation blow device is provided with outside the support of motor, the upside of the support of motor is provided with water cooler, it is characterized in that: the gas outlet place of water cooler is provided with relief valve, square key and sealing gasket is provided with between the support and the shell of water cooler of motor, sealing gasket is rectangular box shape, square key to be positioned at outside sealing gasket and to arrange along sealing gasket outer edge successively interval, square key is installed on the support of motor, the support of motor with between sealing gasket and the shell of water cooler be between sealing gasket bonding, the height of described sealing gasket is higher than the height of square key, the support of described motor is provided with extraction string holes, draws string holes and is provided with gland head, the rotating shaft of motor is plugged with internal bearing cover, internal bearing cover is provided with ring-shaped chamber, carbon sealing ring is provided with in ring-shaped chamber, outer ring sleeve around carbon sealing ring is provided with tension sealing ring, one of them end face of carbon sealing ring is provided with location notch, described carbon sealing ring is set in the outer ring of motor rotary shaft, the inner peripheral surface of carbon sealing ring contacts with motor rotary shaft outer peripheral surface, the both ends of the surface of carbon sealing ring contact with two chamber walls of ring-shaped chamber respectively, internal bearing cover is provided with axially extended set bolt, and set bolt end is stretched in the location notch of carbon sealing ring.
2. a kind of low center as claimed in claim 1 height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor, is characterized in that: the outer peripheral surface around carbon sealing ring is provided with the mounting groove of annular, and described back-moving spring circle is arranged in mounting groove.
3. a kind of low center as claimed in claim 1 height high-capacity and high-speed positive pressure type high-voltage three-phase asynchronous motor, is characterized in that: described back-moving spring circle is stainless steel coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732271.6A CN104362824A (en) | 2014-12-06 | 2014-12-06 | Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410732271.6A CN104362824A (en) | 2014-12-06 | 2014-12-06 | Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN104362824A true CN104362824A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410732271.6A Pending CN104362824A (en) | 2014-12-06 | 2014-12-06 | Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor |
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| CN (1) | CN104362824A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356648A (en) * | 2015-12-03 | 2016-02-24 | 卧龙电气南阳防爆集团股份有限公司 | High-power, low-speed and positive-pressure type explosion-proof induction motor |
| CN106374669A (en) * | 2016-09-30 | 2017-02-01 | 湘潭电机股份有限公司 | Positive pressure ventilating system for motor |
| CN111817481A (en) * | 2020-08-25 | 2020-10-23 | 常州市南方电机有限公司 | Novel explosion-proof synchronous reluctance motor and manufacturing method thereof |
| CN112242775A (en) * | 2020-11-30 | 2021-01-19 | 卧龙电气南阳防爆集团股份有限公司 | Box type high-speed motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6726569B1 (en) * | 1998-04-06 | 2004-04-27 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Divided flywheel |
| CN201057268Y (en) * | 2007-07-04 | 2008-05-07 | 何全波 | Bearing seal device |
| CN102109039A (en) * | 2009-12-25 | 2011-06-29 | 上海通用风机股份有限公司 | Zero leakage rotary shaft seal |
| CN201910689U (en) * | 2010-12-27 | 2011-07-27 | 佳木斯电机股份有限公司 | Positive-pressure shell type three-phase asynchronous motor |
| CN102518823A (en) * | 2011-12-27 | 2012-06-27 | 四川精控阀门制造有限公司 | Valve seat sealing structure |
| CN203604645U (en) * | 2013-11-29 | 2014-05-21 | 南阳防爆集团股份有限公司 | Positive pressure sealing structure for sliding bearing of box-type motor |
-
2014
- 2014-12-06 CN CN201410732271.6A patent/CN104362824A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6726569B1 (en) * | 1998-04-06 | 2004-04-27 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Divided flywheel |
| CN201057268Y (en) * | 2007-07-04 | 2008-05-07 | 何全波 | Bearing seal device |
| CN102109039A (en) * | 2009-12-25 | 2011-06-29 | 上海通用风机股份有限公司 | Zero leakage rotary shaft seal |
| CN201910689U (en) * | 2010-12-27 | 2011-07-27 | 佳木斯电机股份有限公司 | Positive-pressure shell type three-phase asynchronous motor |
| CN102518823A (en) * | 2011-12-27 | 2012-06-27 | 四川精控阀门制造有限公司 | Valve seat sealing structure |
| CN203604645U (en) * | 2013-11-29 | 2014-05-21 | 南阳防爆集团股份有限公司 | Positive pressure sealing structure for sliding bearing of box-type motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356648A (en) * | 2015-12-03 | 2016-02-24 | 卧龙电气南阳防爆集团股份有限公司 | High-power, low-speed and positive-pressure type explosion-proof induction motor |
| CN106374669A (en) * | 2016-09-30 | 2017-02-01 | 湘潭电机股份有限公司 | Positive pressure ventilating system for motor |
| CN106374669B (en) * | 2016-09-30 | 2019-05-07 | 湘潭电机股份有限公司 | A kind of motor positive pressure ventilation system |
| CN111817481A (en) * | 2020-08-25 | 2020-10-23 | 常州市南方电机有限公司 | Novel explosion-proof synchronous reluctance motor and manufacturing method thereof |
| CN112242775A (en) * | 2020-11-30 | 2021-01-19 | 卧龙电气南阳防爆集团股份有限公司 | Box type high-speed motor |
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Application publication date: 20150218 |
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