CN201773778U - High-insulativity circuit breaker - Google Patents
High-insulativity circuit breaker Download PDFInfo
- Publication number
- CN201773778U CN201773778U CN 201020265856 CN201020265856U CN201773778U CN 201773778 U CN201773778 U CN 201773778U CN 201020265856 CN201020265856 CN 201020265856 CN 201020265856 U CN201020265856 U CN 201020265856U CN 201773778 U CN201773778 U CN 201773778U
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- Prior art keywords
- circuit breaker
- breaker
- drawer
- slotting tool
- insulativity
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- 238000009413 insulation Methods 0.000 claims description 38
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
A high-insulativity circuit breaker comprises a breaker body part and a drawer part, and is characterized in that at least one insulating piece is arranged between the inner side of a drawer and part of the conductive part of the breaker body part exposed outside an insulating part. The insulating piece can enhance the insulativity of the circuit breaker. The frame circuit breaker has the advantages that the insulativity between a main circuit and a grounding system of the circuit breaker is enhanced; and particularly, the safety and the reliability of the frame circuit breaker under the severe operating conditions are enhanced, which facilitates the safe and reliable operation of an electric power system.
Description
Technical field
The utility model relates to a kind of frame-type circuit breaker that is fit to be applied to high relative humidity, high insulating property environment.That this circuit breaker has is simple and reliable for structure, stable performance, characteristics that insulation property are high.
Background technology
Modern society constantly increases the demand of the energy, and electric energy is because all superiority of himself are considered to the present optimal energy.It is exhausted day by day that but traditional being used to produces resources such as the oil, coal of electric energy, and waterpower, nuclear energy etc. is subjected to the restriction of region factor, so the mode of new generation electric energy is sought in an urgent demand.And utilize wind power generation, be solve one of these regional energy shortages very effectively, saving and practicable approach.
But these areas also exist some to the very disadvantageous natural cause of power transmission and distribution, such as: wind power equipment is arranged in the spacious outdoor environment, the lightning impulse of being inducted; The high relative humidity of high height above sea level, big some the period air that brings of day and night temperature is to the influence of insulation of electrical installation; More influence to electrical grounding of conducting particles etc. in many, the air of dust in edaphic condition, the air.These influencing factors directly have influence on the performance of electric equipment, safety, the stable operation of harm equipment.
Not only, better also exist above-mentioned high relative humidity, HI high impact voltage condition in the zone in some natural conditions in the abominable zone of these natural environments.Therefore, an urgent demand electric equipment has very high insulation property, can be under higher environment such as relative humidity, and bear bigger environmental impact withstand voltage influence and do not break down, guarantee that electrical operation is normal.
The existing frame-type circuit breaker that is used for the distribution field is not considered these complicated and harsh applied environments during design.In the structure of known low pressure frame-type universal circuit breaker, the main circuit system of circuit breaker and the isolation distance of grounding system are near excessively, and effectively the insulation stop, so can not bear higher surge voltage.Specifically, when circuit breaker is in connection status, the body slotting tool is understood some and is exposed outside drawer pedestal and breaker body, when carrying out the dielectric shock test of high voltage between circuit interrupter grounding system and the conducting system, be easy to directly be punctured between the body slotting tool of exposed part and the grounding system, the body slotting tool can form with drawer along the breaker body surface and partly form creepage puncture in addition.Become the bottleneck position of improving low pressure frame-type universal circuit breaker insulation property herein.As everyone knows, the low pressure all-purpose circuit breaker claims air circuit (ACB, air circuit breaker) again, and it is the circuit breaker of dielectric with the air.The insulation property of air can reduce greatly under above-mentioned those abominable situations, this moment is if circuit breaker bears big voltge surge, grounding system and the air that exposes between the current-carrying part outside the insulated part will be breakdown, and then metal drawer part and expose the conducting of between the current-carrying part outside the insulated part, discharging, circuit breaker and even circuit, other controller switching equipments are damaged.
According to verification experimental verification, the dielectric surge voltage (relatively) that existing frame-type circuit breaker product can bear is no more than 16kV, this uses in the ordinary course of things, and promptly envionmental humidity is lower, equipment surface does not have the condensation phenomenon, the system earth system is good, and this index is enough.But have higher envionmental humidity, system earth situation relatively poor, be subjected under the stronger contour dielectric of thunderbolt of inducting impacts, between the main circuit of these circuit breakers and the grounding system very easily by discharge breakdown.These punctures are normally nonvolatil, not only equipment and distribution system caused damage, also can cause to jeopardize personal safety, cause serious consequences such as fire.
The utility model content
The purpose of this utility model provides a kind of circuit breaker of high-insulativity, and it comprises at least one insulating part, and it can strengthen the insulation of current-carrying part and drawer part, when drawer partly bears big voltge surge, guarantees the insulation of strong current-carrying part and drawer part.
The utility model is by the following technical solutions for this reason:
A kind of circuit breaker of high-insulativity comprises body part, drawer part, and wherein: body part comprises: breaker body, body slotting tool etc.Drawer partly comprises: drawer side, arc insulating apparatus, bridge type contact, drawer pedestal, base plate etc.Drawer side is positioned at the breaker body both sides, and base plate is positioned at the breaker body bottom; Arc insulating apparatus is located between bridge type contact and the body slotting tool, plays insulating effect when circuit breaker is in the separation point position; Body slotting tool and bridge type contact are installed in respectively in the breaker body, drawer pedestal of corresponding mutually insulated; When circuit breaker was in link position, the body slotting tool was connected with the bridge type contact; It is characterized in that: the breaker body current-carrying part exposes between part outside the insulated part and drawer inboard, is provided with at least one insulating part.
Further:
Described insulating part is located in drawer pedestal, breaker body, body slotting tool, arc insulating apparatus or the drawer side one or several.
Described insulating part is a pair of insulation board, this a pair of insulation board is installed in the both sides of described breaker body, the front end of this insulation board protrudes in breaker body, and when the body slotting tool was connected with the bridge type contact, the front end of this insulation board was between drawer side and drawer pedestal.
The boss and the groove that cooperatively interact are arranged respectively on described insulating part and the breaker body, and described boss is arranged in described groove, forms the labyrinth type structure jointly.
Described insulating part is the coat that plays insulating effect that is coated on the drawer side part.
Described insulating part is arranged on the insulating case around the body slotting tool, and it partly or entirely surrounds the body slotting tool and exposes zone outside insulated part.
Described insulating part is the projection of extending in two side direction drawer pedestal directions of breaker body, and when circuit breaker was in link position, this projection can be blocked the body slotting tool and be exposed zone outside insulated part.
Described insulating part is the projection of extending to the breaker body direction on arc insulating apparatus, and when circuit breaker was in link position, this projection can be blocked the body slotting tool and be exposed zone outside insulated part.
Described insulating part is an extended insulation board on the drawer side.
The beneficial effects of the utility model are:
1. in limited space, adopt new structure, strengthened the insulating properties of main circuit system and drawer part.
2. after using this structure, under mal-condition, fail safe and reliability that this circuit breaker uses also are improved, and then have improved the reliability of distribution system.
3. simple in structure, reliability height, easy accessibility.
Description of drawings
Fig. 1 is the utility model embodiment schematic diagram;
Fig. 2 is the utility model first example structure sketch;
Fig. 3 is the utility model the 3rd example structure sketch;
Fig. 4 is the utility model the 4th example structure sketch;
Fig. 5 is the utility model the 5th example structure sketch.
Embodiment
The utility model is a kind of circuit breaker of high-insulativity, comprises body part, drawer part, and wherein: body part comprises: breaker body, body slotting tool etc.Drawer partly comprises: drawer side, arc insulating apparatus, bridge type contact, drawer pedestal, base plate etc.Drawer side is positioned at the breaker body both sides, and base plate is positioned at the breaker body bottom; Arc insulating apparatus is located between bridge type contact and the body slotting tool, plays insulating effect when circuit breaker is in the separation point position; Body slotting tool and bridge type contact are installed in the breaker body, drawer pedestal of corresponding mutually insulated; When circuit breaker was in link position, the body slotting tool was connected with the bridge type contact; It is characterized in that: the breaker body current-carrying part exposes between part outside the insulated part and drawer inboard, is provided with at least one insulating part.
Below in conjunction with accompanying drawing the utility model is further described below.
Embodiment 1: as shown in Figure 1, 2, when circuit breaker was in link position, body slotting tool 4 was connected with bridge type contact 5.Insulated part comprises breaker body 1, arc insulating apparatus 6, drawer pedestal 8 etc.Body slotting tool 4 and bridge type contact 5 are installed in respectively in the breaker body 1 and drawer pedestal 8 of corresponding mutually insulated, and arc insulating apparatus 6 is located between bridge type contact 5 and the body slotting tool 4, plays insulating effect when circuit breaker is in the separation point position.Drawer side 3 is positioned at breaker body 1 both sides, and base plate 10 is positioned at breaker body 1 bottom.
Described insulating part is a pair of insulation board 7, and the both sides of breaker body 1 connect a pair of insulation board 7, and the front end of insulation board 7 protrudes in breaker body 1, and insulation board 7 is fixed on the breaker body 1 by screw, nut by the installing hole at its two ends.On the installing hole of this insulation board 7 stepped hole is arranged, head of screw is positioned at the insulating part stepped hole, and is filled in stepped hole and covered head of screw by stopper 11, has strengthened the insulation of 4 of head of screw and body slotting tools.One group of boss is arranged on this insulation board 7, one group of groove is arranged on the breaker body 1, described boss is arranged in described groove when being in place, and forms the labyrinth type structure jointly, has prolonged creepage distance.By closely cooperating of insulation board 7 and breaker body 1 surface, when breaker body 1 surface forms creepage discharge, the surface of insulation board 7 and breaker body 1 surface connect together, and creepage current is directed on the surface of insulation board 7, thereby prolonged the creepage distance on breaker body 1 surface, made breaker body 1 surface can't form creepage puncture.
Owing between arc insulating apparatus 6 and the drawer pedestal 8 slit is arranged, between arc insulating apparatus 6 and the breaker body 1 slit is arranged, therefore, body slotting tool 4 has part to expose outside insulating material, might this part body slotting tool 4 and drawer discharge between partly and puncture.Slide plate 2 is positioned on the drawer side 3, and transmission device 9 is positioned on the base plate 10, and breaker body 1 places on the slide plate 2, and under the drive of transmission device 9, breaker body 1 moves to test, link position from the separation point position.The insulator of the front end of insulation board 7 enters into the back of arc insulating apparatus 6 when the separation point position, and progressively enters with opening of arc insulating apparatus in the gap of drawer side 3 and drawer pedestal 8.When link position, body slotting tool 4 enters in the drawer pedestal 8, and is connected with the bridge type contact 5 that is placed in one.Insulation board 7 is with the inside, gap that is moved into drawer pedestal 8 and drawer side 3 of breaker body 1, slit between arc insulating apparatus 6 and the drawer pedestal 8 and the slit between arc insulating apparatus 6 and the breaker body 1 have been blocked, strengthen the dielectric strength of 2 on body slotting tool 4 and drawer side 3, slide plate, blocked original direct discharge path.Therefore, during big voltge surge between carrying out relatively, the direct discharge path that it has been blocked between body slotting tool and the drawer side has stoped the direct puncture between body slotting tool and the drawer side.
When the environment for use humidity, the resistivity of insulation air diminishes, and the breaker body surface resistivity diminishes, and forms creepage distance on its surface and increases.During big voltge surge between hygrothermal environment carries out relatively, can make from drawer side and move along insulator surface, promptly prolong along the breaker body surface from drawer side to the creepage distance the body slotting tool to the creepage current the body slotting tool.
Except that embodiment 1, in other embodiment of the present utility model, following structural change can also be arranged:
Embodiment 2: described insulating part is the coat that plays insulating effect that is coated on the drawer part.The coat that insulating effect has been arranged on circuit breaker drawer part, the body slotting tool exposed in the part outside the insulated part at the area along the view field on drawer side on the circuit breaker Width when area of this coat was not less than circuit breaker and is in link position, and the position of this coat can cover above-mentioned view field at least.This coat is considered as the distressed structure with same-actions such as the structures of supplementary insulation described in claims.
Embodiment 3: described insulating part is arranged on the insulating case around the body slotting tool.As shown in Figure 3, around body slotting tool 4 insulating case 12 arranged, it partly or entirely surrounds body slotting tool 4 and exposes zone outside insulated part, and this insulating case 12 can be one with breaker body 1, also can be connected on the breaker body 1.The distressed structure of parcel body slotting tool promptly is considered as equivalent structure of the present utility model or example structure.
Embodiment 4: described insulating part is the projection of extending forward in the both sides of breaker body.As shown in Figure 4, have the insulation projection 13 of extending forward in the both sides of breaker body 1, when circuit breaker was in link position, this projection 13 can be blocked the body slotting tool and be exposed zone outside insulated part.Projection 13 can be connected with breaker body 1 or be made into integration with breaker body 1.
Embodiment 5: described insulating part is an extended forward insulation board on the drawer side.As shown in Figure 5, the drawer side of circuit breaker drawer extends one section insulation board 14 forward, and this insulation board 14 can be one with the drawer part, also can be connected on the drawer.
Embodiment 6: described insulating part is the projection of extending to the breaker body direction on arc insulating apparatus.When circuit breaker was in link position, this projection can be blocked the body slotting tool and be exposed zone outside insulated part.
Innovation form of the present utility model comprises:
1, the utility model is provided with insulating part with reference to the dielectric Impulse Test Result between body slotting tool and drawer side, and this insulating part has been blocked the direct discharge between body slotting tool and drawer side, has avoided circuit breaker directly to be punctured under high voltage.
2, the utility model is with reference to the dielectric Impulse Test Result, and when circuit breaker was in link position, insulating part had increased its surface area, the surface creepage distance that made full use of limited space extending.
3, the utility model is with reference to the dielectric Impulse Test Result, improves on frame-type opens circuit the basis of existing structure, improved its dielectric strength greatly, and changes for a short time, and the part of increase is few, and is with low cost, but effect obviously, reliable.
The utility model circuit breaker can reach higher insulation property, is very suitable for that environment for use has higher relative air humidity, system earth is relatively poor and is subjected to easily being similar to and inducts in lightning impulse or other the indoor or complete set of equipments to the insulating requirements harshness.According to verification experimental verification, this circuit breaker can bear 25kV even higher dielectric impact is not damaged, and has ensured the safe and reliable operation of electrical power trans mission/distribution system effectively.And simple and reliable for structure, easy to maintenance even non-maintaining, save the total cost of ownership.This circuit breaker is a kind of frame-type circuit breaker that has than high insulating property, is very suitable for similar site such as wind-powered electricity generation, has higher relative humidity and be prone in the indoor or complete set of equipments of occasion such as condensation and use in the environment.
The distressed structure that above-mentioned each embodiment insulation system of the utility model is used in combination is considered as equivalent structure of the present utility model or example structure.
Claims (9)
1. the circuit breaker of a high-insulativity comprises body part, drawer part, wherein:
Body part comprises breaker body, body slotting tool;
Drawer partly comprises drawer side, arc insulating apparatus, bridge type contact, drawer pedestal, base plate, and drawer side is positioned at the breaker body both sides, and base plate is positioned at the breaker body bottom; Arc insulating apparatus is located between bridge type contact and the body slotting tool, plays insulating effect when circuit breaker is in the separation point position; Body slotting tool and bridge type contact are installed in respectively in the breaker body, drawer pedestal of corresponding mutually insulated; When circuit breaker was in link position, the body slotting tool was connected with the bridge type contact;
It is characterized in that: the breaker body current-carrying part exposes between part outside the insulated part and drawer inboard, is provided with at least one insulating part.
2. the circuit breaker of high-insulativity as claimed in claim 1 is characterized in that:
Described insulating part is located in drawer pedestal, breaker body, body slotting tool, arc insulating apparatus or the drawer side one or several.
3. the circuit breaker of high-insulativity as claimed in claim 2 is characterized in that:
Described insulating part is a pair of insulation board, this a pair of insulation board is installed in the both sides of described breaker body, the front end of this insulation board protrudes in breaker body, and when the body slotting tool was connected with the bridge type contact, the front end of this insulation board was between drawer side and drawer pedestal.
4. the circuit breaker of high-insulativity as claimed in claim 3 is characterized in that:
The boss and the groove that cooperatively interact are arranged respectively on described insulating part and the breaker body, and described boss is arranged in described groove, forms the labyrinth type structure jointly.
5. the circuit breaker of high-insulativity as claimed in claim 2 is characterized in that:
Described insulating part is the coat that plays insulating effect that is coated on the drawer side part.
6. the circuit breaker of high-insulativity as claimed in claim 2 is characterized in that:
Described insulating part is arranged on the insulating case around the body slotting tool, and this insulating case partly or entirely surrounds the body slotting tool and exposes zone outside insulated part.
7. the circuit breaker of high-insulativity as claimed in claim 2 is characterized in that:
Described insulating part is the projection of extending in two side direction drawer pedestal directions of breaker body, and when circuit breaker was in link position, this projection can be blocked the body slotting tool and be exposed zone outside insulated part.
8. the circuit breaker of high-insulativity as claimed in claim 2 is characterized in that:
Described insulating part is the projection of extending to the breaker body direction on arc insulating apparatus, and when circuit breaker was in link position, this projection can be blocked the body slotting tool and be exposed zone outside insulated part.
9. the circuit breaker of high-insulativity as claimed in claim 2 is characterized in that:
Described insulating part is an extended insulation board on the drawer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020265856 CN201773778U (en) | 2010-07-15 | 2010-07-15 | High-insulativity circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020265856 CN201773778U (en) | 2010-07-15 | 2010-07-15 | High-insulativity circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773778U true CN201773778U (en) | 2011-03-23 |
Family
ID=43753622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020265856 Expired - Lifetime CN201773778U (en) | 2010-07-15 | 2010-07-15 | High-insulativity circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339690A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | High-insulativity circuit breaker |
-
2010
- 2010-07-15 CN CN 201020265856 patent/CN201773778U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339690A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | High-insulativity circuit breaker |
| CN102339690B (en) * | 2010-07-15 | 2015-06-17 | 北京人民电器厂有限公司 | High-insulativity circuit breaker |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |