CN203387336U - Explosion-proof motor insulator - Google Patents
Explosion-proof motor insulator Download PDFInfo
- Publication number
- CN203387336U CN203387336U CN201320305616.0U CN201320305616U CN203387336U CN 203387336 U CN203387336 U CN 203387336U CN 201320305616 U CN201320305616 U CN 201320305616U CN 203387336 U CN203387336 U CN 203387336U
- Authority
- CN
- China
- Prior art keywords
- proof
- proof motor
- fire
- explosion
- fixed part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
An explosion-proof motor insulator comprises an explosion-proof bushing, an epoxy resin and a lead wire. The lead wire is composed of a copper wire and an insulating leather, the two end parts of the copper wire are wrapped with the insulating leather, and the middle part of is exposed outside instead of being wrapped with the insulating leather. The epoxy resin is wrapped on the middle part of the copper wire that is not wrapped with the insulating leather, the explosion-proof bushing is wrapped on the epoxy resin and is fixedly arranged on a terminal block of an explosion-proof motor junction box. The explosion-proof motor insulator of the utility model does not have the requirement for a creep distance, enables the requirement for the space of the junction box to be reduced, and on the condition of an underground coal mine high voltage, can satisfy the requirement that the size of the motor is small.
Description
technical field:
The utility model relates to the fire-proof motor field, particularly a kind of fire-proof motor insulator.
background technology:
Fire-proof motor is a kind of motor that can use in inflammable and explosive place, does not produce electric spark during operation, and fire-proof motor is mainly used in colliery, field of petrochemical industry.The fire-proof motor insulator is placed in connection box for motor, according to the difference of voltage, causes the difference of electric clearance, creepage distance, thereby affects the size of explosion-proof motor junction box.
Electric clearance is between two conductive parts or the shortest space length recorded between conductive parts and equipment protection interface, in the situation that guarantee that electric property is stable and safe, can realize the beeline insulated by air.Creepage distance is between two conductive parts that record along insulating surface or the shortest path between conductive parts and equipment protection interface.Under different service conditions, due to the insulating material around conductor, by electric polarization, cause insulating material to present electrification phenomenon, the radius of this live zone, be creepage distance.According to this regulation, the reason that the design of the terminal box of fire-proof motor is subject to the impact of space size has: the fire-proof motor insulator is arranged on the size that must consider electric clearance and creepage distance in terminal box; Electric current is very thick at the above lead wire of 300A, and with every square millimeter of current-carrying 6A, 300A needs 50mm
2, the diameter of binding post is also very large, cause bow type packing ring diameter become large, the line ball space increases.
The structure of the old terminal box of existing fire-proof motor is as shown in Figure of description 1, in figure, B represents electric clearance, L represents creepage distance, impact due to electric clearance B, creepage distance L, old terminal box 10 sizes have determined space size according to voltage, can't change, voltage is larger, electric clearance B is larger, creepage distance L is larger, thereby the space requirement of the old terminal box 10 of motor is higher, smaller at the volume requirement of mine shearer motor, under high-tension condition, be difficult to meet the requirement that motor volume is little.
summary of the invention:
In view of this, be necessary to provide a kind of fire-proof motor insulator.
A kind of fire-proof motor insulator is characterized in that: the fire-proof motor insulator comprises flame proof lining, epoxy resin, lead wire; Lead wire is comprised of copper cash, insulated hull, two end wrap insulate skins of copper cash, pars intermedia does not have the wrap insulate skin outside exposed, epoxy resin is wrapped in the pars intermedia of the copper cash that there is no the wrap insulate skin, the flame proof lining is wrapped on epoxy resin, and the flame proof lining of fire-proof motor insulator is fixedly mounted on the explosion-proof motor junction box terminal board.
The flame proof lining is comprised of sealing section, fixed part, and sealing section, fixed part are the hollow cylinder structure, and sealing section equates with the fixed part internal diameter, and the external diameter of fixed part is greater than the external diameter of sealing section, and fixed part has screw.
Sealing section and fixed part are one-body molded.
The fire-proof motor insulator adopts following method for designing to obtain:
One section insulated hull of explosion-proof motor junction box lead wire is peeled off, make the part copper cash externally exposed;
Design flame proof lining, be placed on the exposed copper cash of lead wire in the flame proof lining;
Employing epoxy resin and curing agent are by exposed copper cash rubber seal in the flame proof lining, and the fire-proof motor insulator completes.
The utility model is that one section line insulated hull of lead wire is peeled off, and designs a kind of flame proof lining, lead wire is placed in the flame proof lining, with epoxy resin by exposed copper cash rubber seal in the flame proof lining, intercept the gap in copper cash, anti-leak-stopping is quick-fried.Adopt rational curing process, composite insulator can bear the withstand voltage test of standard, meets requirement of explosion proof, there is no the requirement of creepage distance, reduce the requirement of terminal box space size, under coal mine, under high-tension condition, can meet the requirement that motor volume is little.
the accompanying drawing explanation:
Fig. 1 is the old junction box structure schematic diagram of fire-proof motor.
Fig. 2 is for installing the explosion-proof motor junction box structural representation of fire-proof motor insulator.
Fig. 3 is fire-proof motor insulator structure schematic diagram in Fig. 2.
Fig. 4 is flame proof lining planing surface structural representation in Fig. 3.
Fig. 5 is another visual angle structural representation of flame proof lining in Fig. 4.
In figure: electric clearance B, creepage distance L, old terminal box 10, terminal box 20, terminal board 21, insulator 30, flame proof lining 31, sealing section 311, fixed part 312, screw a, epoxy resin 32, copper cash 33, insulated hull 34.
embodiment:
Please consult Fig. 2, Fig. 3 and Fig. 4, fire-proof motor insulator 30 comprises flame proof lining 31, epoxy resin 32, copper cash 33, insulated hull 34 simultaneously;
The flame proof lining 31 of fire-proof motor insulator 30 is fixedly mounted on explosion-proof motor junction box 20 terminal boards 21.
Under coal mine, the requirement of GB3868.3-2010 electric clearance and creepage distance is:
Refer to Fig. 1, adopt the old terminal box 10 of fire-proof motor, during for I class electric equipment voltage 1140V, when AC value or direct current 1250V are pressed in power taking, minimum creep distance L is 22mm, and minimum electric clearance B is 18mm, adopts the present invention there is no the requirement of creepage distance L, the distance of the assurance 18 of two exposed electrified bodies just can say that the terminal box space reduces, thereby guarantees the instructions for use of motor.
The utility model is that one section line insulated hull of lead wire is peeled off, and designs a kind of flame proof lining 31, and lead wire is placed in flame proof lining 31, and use epoxy resin 32 in flame proof lining 31, intercepts the gap in copper cash 33 by exposed copper cash 33 rubber seals, and anti-leak-stopping is quick-fried.Adopt rational curing process, composite insulator can bear the withstand voltage test of standard, meets requirement of explosion proof, there is no the requirement of creepage distance L, reduce the requirement of terminal box 20 space sizes, under coal mine, under high-tension condition, can meet the requirement that motor volume is little.
Claims (2)
1. a fire-proof motor insulator, it is characterized in that: the fire-proof motor insulator comprises flame proof lining, epoxy resin, lead wire; Lead wire is comprised of copper cash, insulated hull, two end wrap insulate skins of copper cash, pars intermedia does not have the wrap insulate skin outside exposed, epoxy resin is wrapped in the pars intermedia of the copper cash that there is no the wrap insulate skin, the flame proof lining is wrapped on epoxy resin, and the flame proof lining of fire-proof motor insulator is fixedly mounted on the explosion-proof motor junction box terminal board.
2. fire-proof motor insulator as claimed in claim 1, it is characterized in that: the flame proof lining is comprised of sealing section, fixed part, and sealing section, fixed part are the hollow cylinder structure, and sealing section equates with the fixed part internal diameter, the external diameter of fixed part is greater than the external diameter of sealing section, and fixed part has screw.
3. fire-proof motor insulator as claimed in claim 2, it is characterized in that: sealing section and fixed part are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320305616.0U CN203387336U (en) | 2013-05-30 | 2013-05-30 | Explosion-proof motor insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320305616.0U CN203387336U (en) | 2013-05-30 | 2013-05-30 | Explosion-proof motor insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203387336U true CN203387336U (en) | 2014-01-08 |
Family
ID=49875784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320305616.0U Expired - Lifetime CN203387336U (en) | 2013-05-30 | 2013-05-30 | Explosion-proof motor insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203387336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296826A (en) * | 2013-05-30 | 2013-09-11 | 宁夏西北骏马电机制造股份有限公司 | Explosion-proof motor insulator design method and explosion-proof motor insulator |
-
2013
- 2013-05-30 CN CN201320305616.0U patent/CN203387336U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296826A (en) * | 2013-05-30 | 2013-09-11 | 宁夏西北骏马电机制造股份有限公司 | Explosion-proof motor insulator design method and explosion-proof motor insulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203218583U (en) | Elbow-type cable plug-pull head | |
| CN209374187U (en) | A kind of closed arrester applied to all insulation rack | |
| CN204068532U (en) | A kind of fire-proof motor insulator | |
| CN101667720A (en) | Insulating sleeve of high-voltage fuse for sulfur hexafluoride gas insulation switch cabinet | |
| CN203387336U (en) | Explosion-proof motor insulator | |
| CN206302261U (en) | A kind of high-voltage motor temperature measuring junction box with arrester | |
| KR101650306B1 (en) | inlet bushing for metering out fit | |
| CN204407657U (en) | A kind of high temperature armoured cable | |
| CN102800468A (en) | Impregnated paper capacitive oil-SF6 transformer bushing | |
| CN102779626A (en) | High-voltage bushing end screen elastic sheet type leading out device | |
| CN203433970U (en) | Tail sealing structure of integral oiled paper capacitor bushing | |
| CN103296826A (en) | Explosion-proof motor insulator design method and explosion-proof motor insulator | |
| CN201576903U (en) | High-voltage flow-leading shield cover for live working | |
| CN204760567U (en) | Insulated wire L type connecting terminal | |
| CN103971865A (en) | Discharge gap cross-arm insulator | |
| CN203721911U (en) | Explosion-proof type fixed insulating bus | |
| CN202534965U (en) | A conducting rod assembly of an ultrahigh voltage outlet bushing | |
| CN203967669U (en) | A kind of mine anti-explosion termination of being convenient to wiring | |
| CN103855484B (en) | Flame-proof type fixed insulation bus | |
| CN201717521U (en) | Connecting device for high-voltage shielding sleeve | |
| CN206962038U (en) | A kind of novel connecting terminal | |
| CN204089146U (en) | Underground type 10 kv cable splitter | |
| CN202662412U (en) | Assembly structure of insulator and flange of high-voltage bushing | |
| CN203859090U (en) | Oil-immersed high-voltage current limiting fuse with total range protection specially used for wind power transformation | |
| CN104113027A (en) | Anti-explosion junction device good for preventing electrified wrong opening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |
|
| CX01 | Expiry of patent term |