CN208597014U - A kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency - Google Patents
A kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency Download PDFInfo
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- CN208597014U CN208597014U CN201821421208.0U CN201821421208U CN208597014U CN 208597014 U CN208597014 U CN 208597014U CN 201821421208 U CN201821421208 U CN 201821421208U CN 208597014 U CN208597014 U CN 208597014U
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Abstract
The utility model discloses a kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency, it includes base, the stator being mounted in base and the rotor being coupled with stator, rotor is fixedly mounted in shaft, it respectively corresponds in the front and back end of base equipped with end cap, bearing is equipped between end cap and shaft, and bearing internal external side is respectively corresponded equipped with internal bearing cover and bearing cover, terminal box is also equipped at the base line outlet, the internal bearing cover and shaft are fitted close to form interior flame proof access structure, the bearing cover and shaft are fitted close to form outer flame proof access structure, and the oil sealing with shaft interference fit is equipped at bearing cover；Equal shape seam allowance flameproof joint at the cooperation of the end cap and base；The rotor is the cast-aluminum rotor of double cage-shaped structures, and rotor bar surface sets insulating layer, and remains with gap between rotor bar and corresponding rotor slot.The utility model it is structurally reasonable, it is securely and reliably, user-friendly.
Description
Technical field
The utility model relates to fire-proof motor technical field more particularly to a kind of explosion-proof three-phase asynchronous of high energy efficiency are electronic
Machine.
Background technique
Domestic conventional fire-proof motor is the 3 grades of efficiencies and 2 grades of efficiencies met in GB18613-2012, is not able to satisfy mesh
Demand of the explosion-proof place such as preceding petrochemical industry to high efficiency motor.In addition, conventional fire-proof motor there are degree of protection be IP54,
IP55 can not meet the requirement of high protection, while locked rotor current is larger, and be not able to satisfy user's requirement is not more than 7 times of specified electricity
The problems such as requirement of stream, particular problem is as follows:
1. efficiency grade only reaches 3 grades of efficiencies and 2 grades of efficiencies；
2. degree of protection is low, IP54, IP55 can only achieve, the requirement of IP66 degree of protection is not achieved；
3. cooling fin contour line is not made full use of using circle, heat-sinking capability；
4. starting current is big, it can not meet complete series and reach requirement no more than rated current；
5. existing using the connection type of connection bolt and crimping not tight and the case where lead is burnt occur；
6. appropriate cable outer diameter is discreteness, and noncontinuity, since the outside diameter of cable deviation of each producer production is larger,
Cause the hidden danger that there is propagation of explosion in practical applications；
7. wiring cavity is small, cause service cable connection difficult；
8. a kind of blast resistance construction can only meet a kind of explosion proof ratings；
9. oil extraction is unsmooth, long-play, bearing chamber cavity oil accumulation is too many, causes bearing temperature height.
Therefore, this is just there is an urgent need to design a kind of Flame-Proof Three-Phase Induction Motors of new high energy efficiency, to solve tradition
Fire-proof motor is the problems of anti-.
Utility model content
In order to solve the problems in the prior art, the explosion-proof three-phase asynchronous for providing a kind of high energy efficiency is electronic for the utility model
Machine, it is structurally reasonable, it is securely and reliably, user-friendly.
In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of flame-proof type three-phase of high energy efficiency
Asynchronous motor, it includes base, the stator being mounted in base and the rotor being coupled with stator, and rotor is fixedly mounted
It in shaft, respectively corresponds in the front and back end of base equipped with end cap, bearing, and bearing internal external side is equipped between end cap and shaft
Respectively correspond and be equipped with internal bearing cover and bearing cover, be also equipped with terminal box at the base line outlet, the internal bearing cover with
Shaft is fitted close to form interior flame proof access structure, and the bearing cover and shaft are fitted close to form outer flame proof access structure,
And the oil sealing with shaft interference fit is equipped at bearing cover；The end cap is engaged with shape seam allowance flame proof equal at the cooperation of base
Face；
The terminal box includes wiring box mounting board, junction box seat and connector cover, and wiring box mounting board is fixedly installed in
On base, junction box seat is fixedly connected with wiring box mounting board, and connector cover is fixedly connected with junction box seat, and terminal box is installed
Seam allowance flame proof knot is respectively formed at the cooperation of plate and base, junction box seat and wiring box mounting board and connector cover and junction box seat
Conjunction face；
The rotor is the cast-aluminum rotor of double cage-shaped structures, and rotor bar surface sets insulating layer, and rotor bar with it is corresponding
Rotor slot between remain with gap.
It is equipped with seal groove at the seam allowance explosion-insulation surface, sealing ring is arranged in seal groove.
The bearing cover is equipped with the mounting groove for installing oil sealing, and the oil sealing is fastened in the mounting groove.
The non-shaft stretching end of the shaft is equipped with cooling fan, and cooling fan can generate hypsokinesis effect when being bidirectional rotation
Flexiplast fan.
The cooling fin outer profile of the base is eight-sided formation.
The wiring box mounting board is equipped with lead fixation hole, and conducting wire in base by stretching out through lead fixation hole and terminal box
Interior binding post connection, and the glue sealing for fixing conducting wire is equipped at lead fixation hole.
Elastic stringing circle is arranged at the incoming line of the terminal box.
Automatic oil draining plug is connected on the bearing.
The bearing cover is cast steel, and the roughness on the joint surface of bearing cover and shaft is set as 0.4.
The insulating layer is AL2O3Insulating layer.
The beneficial effects of the utility model are:
1, the utility model middle (center) bearing inner cover and shaft are fitted close to form interior flame proof access structure, the bearing cover with
Shaft is fitted close to form outer flame proof access structure, and equal shape seam allowance flame proof at the cooperation of end cap and base in the utility model
The cooperation of joint surface, wiring box mounting board and base, junction box seat and wiring box mounting board and connector cover and junction box seat
Place is respectively formed seam allowance explosion-insulation surface, by the method combined to inside and outside access using dynamic sealing and static seal, realizes IP66's
Degree of protection is handled by flame proof access using seam allowance flame proof and explosion-proof cylinder structure, thus realize meet ExdIMb,
Tri- kinds of explosion proof ratings of ExdIIBT4Gb, ExdIICT4Gb, adaptation range are wider.
2. being equipped with seal groove at the above-mentioned seam allowance explosion-insulation surface in the utility model, it is arranged in seal groove close
Seal, to reach the safeguard structure of complete machine IP66.And the utility model middle (center) bearing outer cover is cast steel, and bearing cover
It is set as 0.4 with the roughness on the joint surface of shaft, while being equipped with the oil sealing with shaft interference fit at bearing cover, to guarantee
The rubber ring of oil sealing and the Suitable compression amount on bearing cover joint surface, thus in the case where guaranteeing that sealing performance reaches IP66,
In the case where Rated motor operation, friction is small with outer cover joint surface for rubber ring, so that mechanical loss is smaller and is promoted
Efficiency.
3. the non-shaft stretching end of shaft is equipped with cooling fan in the utility model, cooling fan is using flexiplast wind
Fan, either rotates clockwise or counterclockwise, can generate hypsokinesis effect, reduces the mechanical loss of fan to improve effect
Rate.
4. rotor is the cast-aluminum rotor of double cage-shaped structures in the utility model, starting current can be reduced, meets and is not more than 7
The requirement of times rated current；Rotor bar surface sets AL2O3Insulating layer, and between being remained between rotor bar and corresponding rotor slot
Gap increases the contact resistance between conducting bar and rotor slot, to reduce the stray loss of motor, improves efficiency.
5. base cooling fin outer profile uses eight-sided formation in the utility model, guaranteeing that motor length, width and height are constant
In the case of, heat dissipation area increases 20% or so, improves heat-sinking capability.
6. wiring box mounting board is equipped with lead fixation hole in the utility model, conducting wire is consolidated by stretching out in base through lead
Determine hole to connect with the binding post in terminal box, and be equipped with the glue sealing for fixing conducting wire at lead fixation hole, by using glue
Seal structure eliminates connection bolt, eliminates connection bolt and crimps not tight situation；Elasticity is also arranged at the incoming line of terminal box
Stringing circle is realized and adapts to service cable from minimum to all standing of maximum all outer diameters.
7. the utility model sets automatic oil draining plug structure, waste oil and extra oil can be discharged in oiling, guarantee bearing
Reliability service.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram in Fig. 1 at terminal box.
Specific embodiment
It elaborates below in conjunction with attached drawing to specific embodiment of the present utility model.
As depicted in figs. 1 and 2, the Flame-Proof Three-Phase Induction Motors of a kind of high energy efficiency of the utility model, it includes machine
Seat 8, the stator being mounted in base 8 and the rotor 9 being coupled with stator, rotor 9 is fixedly mounted in shaft 2, in machine
The front and back end of seat 8 is respectively corresponded equipped with end cap 6,12, and bearing 5, and outside in bearing 5 are equipped between end cap 6,12 and shaft 2
It respectively corresponds and is equipped with internal bearing cover 1,11 and bearing cover 3,15.
The internal bearing cover 1,11 is fitted close with shaft 2 formed in flame proof access structure, the bearing cover 3,15 with
Shaft 2, which is fitted close, forms outer flame proof access structure；The end cap 6,12 is engaged with shape seam allowance flame proof equal at the cooperation of base 8
Face.
Terminal box 7 is also equipped at the base line outlet, terminal box 7 includes wiring box mounting board 18, junction box seat 19
With connector cover 21, wiring box mounting board 18 is fixedly installed on base 8, junction box seat 19 and the fixed company of wiring box mounting board 18
It connects, connector cover 21 is fixedly connected with junction box seat 19, and wiring box mounting board 18 and base 8, junction box seat 19 and terminal box
Seam allowance explosion-insulation surface is respectively formed at the cooperation of mounting plate 18 and connector cover 21 and junction box seat 19.
It is equipped with seal groove at above-mentioned seam allowance explosion-insulation surface, sealing ring is arranged in seal groove.
The utility model is led to by the cooperation of above-mentioned inside and outside flame proof access structure and seam allowance flameproof joint to inside and outside
The method that road is combined using dynamic sealing and static seal, realizes the degree of protection of IP66, by flame proof access using seam allowance flame proof and
Explosion-proof cylinder structure processing meets tri- kinds of explosion proof ratings of ExdIMb, ExdIIBT4Gb, ExdIICT4Gb to realize, adapts to
Range is wider.
And the utility model middle (center) bearing outer cover 3,15 is cast steel, and the joint surface of bearing cover 3,15 and shaft 2
Roughness be set as 0.4, while be equipped at bearing cover 3,15 with shaft interference fit oil sealing (in the present embodiment, bearing
Outer cover 3,15 is equipped with the mounting groove for installing oil sealing, and the oil sealing is fastened in the mounting groove), to guarantee the rubber of oil sealing
The Suitable compression amount of circle and bearing cover joint surface, thus in the case where guaranteeing that sealing performance reaches IP66, in Rated motor
In the case where operation, friction is small with outer cover joint surface for rubber ring, so that mechanical loss is smaller and raising efficiency.
Rotor 9 described in the utility model is the cast-aluminum rotor of double cage-shaped structures, can reduce starting current, satisfaction is not more than
7 times of rated current requirements；And rotor 9 is heated using high frequency oxygenation, then the method for rapid cooling, in rotor bar surface shape
At AL2O3Insulating layer, and make to generate gap between rotor bar and corresponding rotor slot, it increases between conducting bar and rotor slot
Contact resistance improves efficiency to reduce the stray loss of motor.
The non-shaft stretching end of shaft 2 is equipped with cooling fan 16 in the utility model, and cooling fan 16 is using flexiplast
Fan either rotates clockwise or counterclockwise, can generate hypsokinesis effect, reduces the mechanical loss of fan to improve effect
Rate.Cooling fan 16 is technical solution and principle using flexiplast fan filed in the applicant 2015.04.22 days
A kind of motor of utility model patent is disclosed in flexiplast fan (application number: CN201520244327.3), the present embodiment
No longer it is described in detail
The cooling fin outer profile of the base is eight-sided formation, in the case where guaranteeing that motor length, width and height are constant, heat dissipation
Area increases 20% or so, improves heat-sinking capability.
7 shape of terminal box uses eight-sided formation, in the case where length, width and height are constant, terminal box space in the utility model
Increase by 10% or so.Wiring box mounting board 18 be equipped with lead fixation hole, conducting wire by base 8 stretch out through lead fixation hole with connect
Binding post 20 in wire box 7 connects, and the glue sealing 17 for fixing conducting wire is equipped at lead fixation hole, by using glue sealed knot
Structure eliminates connection bolt, eliminates connection bolt and crimps not tight situation；It is tight that elasticity is also arranged at the incoming line of terminal box 7
Coil is realized and adapts to service cable from minimum to all standing of maximum all outer diameters.
The improvement that the utility model passes through shape, lead wire fixed structure, line outlet elasticity stringing circle to docking wire box
Design, keeps junction box structure more reasonable, is more convenient user and uses, reduces security risk.
It is also connected with automatic oil draining plug on the utility model middle (center) bearing 5, waste oil and extra oil can be discharged in oiling,
Guarantee the reliability service of bearing.
The utility model can also be fixed by reducing air gap, being reduced using magnetic slot-seal, reduction flux density hoisting power factor
Electron current is lost and raising efficiency to reduce stator winding；Increased by increase copper factor, thinned insulation, reduction film thickness
Add the sectional area of stator conductors and reduces stator DC resistance so that stator winding is lost and raising efficiency；Using small dimension, gently
Serial bearing reduces machinery and consumes and raising efficiency.
The Flame-Proof Three-Phase Induction Motors of the high energy efficiency of the present embodiment compared with prior art, realize following advantages:
(1) electric efficiency reaches 1 grade of efficiency；
(2) degree of protection reaches IP66；
(3) heat-sinking capability of base promotes 20%；
(4) starting current is low, meets no more than 7 times rated current requirements；
(5) terminal box cavity is big, eliminates crimping hidden danger, and it is wide to adapt to service cable range；
(6) meet tri- kinds of explosion proof ratings of ExdIMb, ExdIIBT4Gb, ExdIICT4Gb, adaptation range is wider；
(7) oil extraction is smooth, and user maintenance is convenient.
Above embodiments are only to illustrate rather than limit the technical solution of the utility model, although referring to above-described embodiment pair
The utility model is described in detail, those skilled in the art should understand that: still can to the utility model into
Row modification or equivalent replacement should all without departing from any modification or partial replacement of the spirit and scope of the utility model
Cover in the scope of the claims of the utility model.
Claims (10)
1. a kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency, it include base, the stator being mounted in base and with it is fixed
The rotor that son is coupled, rotor are fixedly mounted in shaft, are respectively corresponded in the front and back end of base equipped with end cap, end cap with turn
Bearing is equipped between axis, and bearing internal external side is respectively corresponded equipped with internal bearing cover and bearing cover, at the base line outlet
It is also equipped with terminal box, it is characterised in that: the internal bearing cover and shaft are fitted close to form interior flame proof access structure, the axis
It holds outer cover and shaft is fitted close to form outer flame proof access structure, and be equipped with the oil with shaft interference fit at bearing cover
Envelope；Equal shape seam allowance flameproof joint at the cooperation of the end cap and base；
The terminal box includes wiring box mounting board, junction box seat and connector cover, and wiring box mounting board is fixedly installed in base
On, junction box seat is fixedly connected with wiring box mounting board, and connector cover is fixedly connected with junction box seat, and wiring box mounting board with
Base, junction box seat are respectively formed in conjunction with seam allowance flame proof with wiring box mounting board and connector cover at the cooperation of junction box seat
Face；
The rotor is the cast-aluminum rotor of double cage-shaped structures, and rotor bar surface sets insulating layer, and rotor bar with corresponding turn
Gap is remained between pilot trench.
2. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1, it is characterised in that: the seam allowance flame proof
It is equipped with seal groove at faying face, sealing ring is arranged in seal groove.
3. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1, it is characterised in that: the bearing cover
It is equipped with the mounting groove for installing oil sealing, the oil sealing is fastened in the mounting groove.
4. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1-3, it is characterised in that: described
The non-shaft stretching end of shaft is equipped with cooling fan, and cooling fan can generate the flexiplast wind of hypsokinesis effect when being bidirectional rotation
Fan.
5. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1, it is characterised in that: the base dissipates
Backing outer profile is eight-sided formation.
6. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1, it is characterised in that: the terminal box peace
Loading board is equipped with lead fixation hole, and conducting wire is connect through lead fixation hole with the binding post in terminal box by stretching out in base, and is drawn
The glue sealing for fixing conducting wire is equipped at line fixation hole.
7. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 6, it is characterised in that: the terminal box
Elastic stringing circle is arranged at incoming line.
8. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1, it is characterised in that: connect on the bearing
It is connected to automatic oil draining plug.
9. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1, it is characterised in that: the bearing cover
Roughness for cast steel, and the joint surface of bearing cover and shaft is set as 0.4.
10. the Flame-Proof Three-Phase Induction Motors of high energy efficiency according to claim 1, it is characterised in that: the insulating layer
For AL2O3Insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821421208.0U CN208597014U (en) | 2018-08-31 | 2018-08-31 | A kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821421208.0U CN208597014U (en) | 2018-08-31 | 2018-08-31 | A kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208597014U true CN208597014U (en) | 2019-03-12 |
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ID=65605453
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821421208.0U Active CN208597014U (en) | 2018-08-31 | 2018-08-31 | A kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency |
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| CN (1) | CN208597014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847761A (en) * | 2018-08-31 | 2018-11-20 | 卧龙电气南阳防爆集团股份有限公司 | A kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency |
-
2018
- 2018-08-31 CN CN201821421208.0U patent/CN208597014U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847761A (en) * | 2018-08-31 | 2018-11-20 | 卧龙电气南阳防爆集团股份有限公司 | A kind of Flame-Proof Three-Phase Induction Motors of high energy efficiency |
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Address after: 473008 No. 1801 Dushan Avenue, Nanyang City, Henan Province Co-patentee after: Wolong Electric Drive Group Co., Ltd. Patentee after: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP CO., LTD. Address before: 473008 No. 1801 Dushan Avenue, Nanyang City, Henan Province Co-patentee before: Wolong Electric Group Co., Ltd. Patentee before: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP CO., LTD. |