CN203632066U - Indoor semi-insulating switch cabinet - Google Patents
Indoor semi-insulating switch cabinet Download PDFInfo
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- CN203632066U CN203632066U CN201320747101.6U CN201320747101U CN203632066U CN 203632066 U CN203632066 U CN 203632066U CN 201320747101 U CN201320747101 U CN 201320747101U CN 203632066 U CN203632066 U CN 203632066U
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- Prior art keywords
- switch cubicle
- low resistance
- semiconductor material
- ventilation unit
- resistance semiconductor
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Abstract
The utility model discloses an indoor semi-insulating switch cabinet, which comprises an outer shell, wherein buses, bus wiring casing pipes, an insulating gas box, cable outgoing casing pipes and voltage-equalizing covers are arranged in the outer shell, the top ends of the bus wiring casing pipes are connected with the buses, the bottom ends are fixedly connected with the insulating gas box, and the surfaces extending downward to 5-30mm from the top ends of the bus wiring casing pipes are provided with low resistance semiconductor material coatings; and the top ends of the cable outgoing casing pipes are fixedly connected with the insulating gas box, the bottom ends are connected with the voltage-equalizing covers, and the surfaces extending upward to 5-30mm from the bottom ends of the cable outgoing casing pipes are provided with low resistance semiconductor material coatings. The indoor semi-insulating switch cabinet has the advantages of long service life and high power supply reliability, can reduce the capital investment and overhauling work, and has good social and economic benefits.
Description
Technical field
The utility model relates to a kind of switch cubicle, particularly a kind of indoor semi-insulating switch cubicle.
Background technology
Along with the develop rapidly of urban economy, power distribution room expropriation of land difficulty, many places, panel switches room are in moist basement.Existing indoor semi-insulating switch cubicle (being mainly the indoor semi-insulating switch cubicle of 6kV～40.5kV) is in running, moisture in the meeting adsorbed gas of solid dielectric surface forms moisture film, moisture film has ionic conductance, ion moves along dielectric surface in electric field, near electrode, accumulate gradually electric charge, cause dielectric surface voltage skewness, thereby make the puncture voltage of edge flashing voltage lower than air gap.So just cause existing indoor semi-insulating switch cubicle in running, to produce partial discharge phenomenon, when serious, cause surface of insulating layer generation flashover, dielectric breakdown accident even occurs.Through on-the-spot operating statistic, existing indoor semi-insulating switch cubicle is particularly evident in the moister South China's shortcoming of weather, and rate of failure is higher, and this switch cubicle accounts for the more than 60% of power distribution network switch cubicle total amount, quantity is huge, and the safety to electrical network, stable operation exist great potential safety hazard accident.Operation power department takes directly to change the indoor semi-insulating switch cubicle that has similar defect at present, has so both affected the reliability of power supply, has increased again the waste of resource.
Utility model content
Based on this, be necessary for the problems referred to above, provide a kind of power supply reliability higher, the indoor semi-insulating switch cubicle of longer service life.
For achieving the above object, the utility model adopts following scheme:
A kind of indoor semi-insulating switch cubicle, comprise shell, in described shell, be provided with bus, bus connecting sleeve, insulation gas tank, cable outlet sleeve pipe, grading shield, the top of described bus connecting sleeve is connected with described bus, bottom is fixedly connected with described insulation gas tank, and the surface that extends downward 5-30mm from the top of described bus connecting sleeve is provided with low resistance semiconductor material coating;
The top of described cable outlet sleeve pipe is fixedly connected with described insulation gas tank, and bottom is connected with described grading shield, and the surface that extends upwardly to 5-30mm from the bottom of described cable outlet sleeve pipe is provided with low resistance semiconductor material coating.
In some embodiment, the surface that extends downward 18-22mm from the top of described bus connecting sleeve is provided with low resistance semiconductor material coating therein; The surface that extends upwardly to 18-22mm from the bottom of described cable outlet sleeve pipe is provided with low resistance semiconductor material coating.
Above-mentioned low resistance semiconductor material coating distributes for uniform electric field, improves the partial discharge phenomenon causing due to Electric Field Distribution inequality.Regional extent to low resistance semiconductor material coating limits, and can realize better technique effect.
In some embodiment, the thickness of described low resistance semiconductor material coating is 0.1-1mm therein.
In some embodiment, the thickness of described low resistance semiconductor material coating is 0.5mm therein.
The effect that the thickness of above-mentioned preferred coating can provide better uniform electric field to distribute.
In some embodiment, the surface of described low resistance semiconductor material coating and described insulation gas tank is provided with one deck SRTV antifouling flush paint layer therein.
Described SRTV antifouling flush paint layer has good electric insulating quality, can improve insulation level and the pollution flashover ability of switch cubicle, SRTV antifouling flush paint in this SRTV antifouling flush paint layer is on the basis of common antifouling flush paint (RTV, PRTV), retain the original characteristic of antifouling flush paint, and in coating, introduce Organic fluoride monomer, make antifouling flush paint possess the hydrophobicity of organosilicon antifouling flush paint and the oil repellency of organic fluorine material simultaneously, be a kind of hydrophobic and oil repellent, prevent that grease from boning, the good antifouling flush paint of clean surfaces performance.The distinctive resistance to fluid loss characteristics of described SRTV antifouling flush paint layer solved the defect of hydrophobicity loss under common antifouling flush paint and the common continuous humid climate of composite insulator, can effectively reduce the generation of common antifouling flush paint and composite insulator unidentified flashover.
In some embodiment, the thickness of described SRTV antifouling flush paint layer is 0.1-1mm therein.
In some embodiment, the thickness of described SRTV antifouling flush paint layer is 0.4-0.6mm therein.
Above-mentioned preferred coating layer thickness can provide the effect of better insulation and hydrophobic, oil repellency.
In some embodiment, be also provided with Intelligent moisture-proof device in described shell therein, described Intelligent moisture-proof device comprises temperature and humidity controller, Temperature Humidity Sensor and heater, and above-mentioned three parts are electrically connected mutually.
Therein in some embodiment, described shell comprises framework, top board, base plate, on described framework, be provided with three-stations load switch support, on described top board, three-stations load switch support and base plate, offer respectively the first ventilation unit, the second ventilation unit, the 3rd ventilation unit, described the first ventilation unit, the second ventilation unit, the 3rd ventilation unit are blind shaped.
In some embodiment, described the first ventilation unit top is provided with cover plate therein.
Above-mentioned Intelligent moisture-proof device can suppress running environment in switch cubicle, combine with switch cubicle ventilation unit, in control cubicle, humidity is below 80%, prevent the larger temperature difference of the inside and outside existence of switch cubicle, produce condensation phenomenon at switch cubicle internal surface area insulating part outer surface, reduce switch cubicle insulation resistance, partial discharge phenomenon occurs.
The utility model is by improving existing indoor semi-insulating switch cabinet structure, improve running environment and the inside switch cabinet Electric Field Distribution of switch cubicle, and be provided with SRTV antifouling flush paint layer (high-self-cleaning antipollution flashover coating layer), this coating has good electric insulating quality, can improve the insulation level of switch cubicle, there is hydrophobic and lyophobic property simultaneously, prevent that the humid air in switch cubicle from producing condensation phenomenon, form the globule at insulation gas tank outer surface, produce partial discharge and pollution flashover phenomenon.The utility model can improve the reliability of power supply, and can reach 15-20 useful life, and can reduce the more investment of exchange device, has high generalization.
The beneficial effect that the utility model is compared with the prior art is:
1, the utility model, from improving uniform research of indoor semi-insulating inside switch cabinet electric field, finds switch cubicle to produce the basic reason of partial discharge, carrys out effective control switch cabinet local discharging level by add low resistance semiconductor material coating on switch cubicle.
2, the utility model is provided with SRTV antifouling flush paint layer, extended the useful life of indoor semi-insulating switch cubicle, has improved the reliability of power supply, larger minimizing the overlapping investment of fund, there is high economic benefits and social effect.
3, the utility model effectively improves the environment for use of indoor semi-insulating switch cubicle by adding ventilation unit and Intelligent moisture-proof device, improves the anti-pollution flashover ability of indoor semi-insulating switch cubicle.
Accompanying drawing explanation
Fig. 1 is the indoor semi-insulating switch cubicle three-dimensional structure diagram described in the utility model embodiment;
Fig. 2 is the insulation gas tank external structure of the indoor semi-insulating switch cubicle shown in Fig. 1;
Fig. 3 is the insulation gas tank Lower Half external structure of the indoor semi-insulating switch cubicle shown in Fig. 1;
Fig. 4 is the insulation gas tank end view of the indoor semi-insulating switch cubicle shown in Fig. 1;
Fig. 5 is the three-dimensional structure diagram of the indoor semi-insulating switch cubicle described in the utility model embodiment.
Reference numeral is:
1, shell, 1a, top board, 1b, framework, 1c, base plate, 1d, panel, 2, insulation gas tank, 3, bus, 4, bus connecting sleeve, 5, grading shield, 6, electrified sensor, 7, cable outlet sleeve pipe, 9, sensor stand, 10, temperature and humidity controller, 11, heater, 12, Temperature Humidity Sensor, 13, low resistance semiconductor coating, 14, Flexible Connector, 15a, the first ventilation unit, 15b, the second ventilation unit, 15c, the 3rd ventilation unit, 16, cover plate, 17, Air Filter, 18, three-stations load switch support, 19, cable vault, 20, bus-bar room.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the utility model is done to detailed elaboration.
Low resistance semiconductor material in the present embodiment medium or low resistance semi-conducting material coating is purchased from Fujian Rui Sen Chemical Co., Ltd.;
SRTV antifouling flush paint (high-self-cleaning antipollution flashover coating) in the present embodiment in SRTV antifouling flush paint layer is purchased from Fujian Rui Sen Chemical Co., Ltd..
Refer to Fig. 1-5, indoor semi-insulating switch cubicle of the present utility model comprises top board 1a, framework 1b, base plate 1c, panel 1d, side plate, the metal shell 1 of the compositions such as back of the body baffle plate, in shell 1, be provided with bus 3(bus 3 and include A, B, C three-phase), bus connecting sleeve 4(bus connecting sleeve 4 includes A, B, C three-phase), insulation gas tank 2, three-stations load switch support 18, cable outlet sleeve pipe 7(cable outlet sleeve pipe 7 includes A, B, C three-phase), grading shield 5(grading shield 5 includes A, B, C three-phase), electrified sensor 6(electrified sensor 6 includes A, B, C three-phase), operating mechanism, sensor stand 9, Intelligent moisture-proof device, Flexible Connector 14, (cable connection busbar includes A to cable connection busbar, B, C three-phase), cable vault 19, bus-bar room 20 etc.Three-stations load switch support 18 is arranged on framework 1b, insulation gas tank 2 is connected with shell 1, the top of bus connecting sleeve 4 is connected with the bus 3 of homophase respectively, the bottom of bus connecting sleeve 4 is fixedly connected with insulation gas tank 2 respectively, the top of cable outlet sleeve pipe 7 is fixedly connected with insulation gas tank 2 respectively, the bottom of cable outlet sleeve pipe 7 is connected with the grading shield 5 of homophase respectively, wherein, bus connecting sleeve 4, insulation gas tank 2, cable outlet sleeve pipe 7 also can be integrated cast and form.Cable outlet sleeve pipe 7 is also connected with the cable connection busbar of homophase respectively, and electrified sensor 6 high-pressure sides are connected with the cable connection busbar of homophase respectively through Flexible Connector 14, and electrified sensor 6 low-pressure ends are connected with sensor stand 9 respectively.
The surface that extends downward 20mm from the top of bus connecting sleeve 4 is provided with low resistance semiconductor material coating 13, and the surface that extends upwardly to 20mm from the bottom of cable outlet sleeve pipe 7 is provided with low resistance semiconductor material coating 13.The thickness of above-mentioned low resistance semiconductor material coating is 0.5mm.The low resistance semiconductor material of above-mentioned formation low resistance semiconductor material coating 13 is purchased from Fujian Rui Sen Chemical Co., Ltd..
In switch cubicle actual motion, there is non-uniform electric field, be divided into slightly non-uniform electric field and severe non-uniform electric field according to electric field degree of irregularity.In uniform field and slightly non-uniform field, the field intensity of on average discharging is very high, so humidity effect is little; In utmost point non-uniform field, the field intensity of on average discharging is very low, so humidity effect is large.Switch cubicle progressively produces partial discharge phenomenon for a long time in moist running environment, and then generation flashover breakdown, this low resistance semiconductor material coating is for the Electric Field Distribution in even switch cubicle, improve the partial discharge phenomenon causing due to Electric Field Distribution inequality, low resistance semiconductor material coating 13 of the present utility model as shown in Figure 4.
On switch cubicle top board 1a, base plate 1c, be provided with the ventilation unit of the blind shaped being stamped to form, be respectively the first ventilation unit 15a, the 3rd ventilation unit 15c, on above-mentioned ventilation unit, open punching, wherein on the first ventilation unit 15a, open 3x10 through hole that is of a size of 60x10x3mm, above-mentioned through hole column pitch is 20mm, and line space is 10mm; On the 3rd ventilation unit 15c, open 4x10 through hole that is of a size of 60x10x3mm, above-mentioned through hole column pitch is 10mm, and line space is 10mm; At three-stations load switch support 18 places, by bending technique and stamping technology, open the punching of suitable size equally, form the second ventilation unit 15b, on the second ventilation unit 15b, open 4x2 through hole that is of a size of 60x10x3mm, above-mentioned through hole column pitch is 10mm, and line space is 10mm; In order to prevent that dust from entering bus-bar room 20, above the first ventilation unit 15a, install cover plate 16 additional.In the present embodiment, the baffle plate that cover plate 16 extends for be respectively provided with a vertical direction in the first ventilation unit 15a both sides arranges top board to be connected with baffle plate above baffle plate, and at cover plate 16 and the opening part that top board 1a forms, Air Filter 17 is set; In said structure, cabinet body structure adopts 2mm cold-rolled steel sheet to carry out digital stamping moulding, has enough stress intensities, and can bear insulation gas tank 2 with three-station weight and not destroy electromagnetic field intensity, and by the on-site verification in actual motion.
On panel 1d, be provided with temperature and humidity controller 10, be electrically connected with the heater 11 installing additional in cable vault 19 and Temperature Humidity Sensor 12, composition Intelligent moisture-proof device, this Intelligent moisture-proof device can suppress running environment in cabinet, combines with switch cubicle ventilation unit, and in control cubicle, humidity is below 80%, prevent the larger temperature difference of the inside and outside existence of switch cubicle, produce condensation phenomenon at switch cubicle internal surface area insulating part outer surface, reduce switch cubicle insulation resistance, partial discharge phenomenon occurs.
In the time that wet gas enters cable vault 19 by the 3rd ventilation unit 15c, in the time that in cabinet, ambient humidity is greater than 80%, the Temperature Humidity Sensor 12 being installed in cabinet detects the humidity and temperature in cabinet, send signal to temperature and humidity controller 10, temperature and humidity controller 10 is according to receiving the signal of Temperature Humidity Sensor 12 and the definite value of temperature and humidity controller 10 internal preset, start heater 11, heater 11 heats and drives tide gas in cabinet.The second ventilation unit 15b of wet gas on three-stations load switch support 18 is to bus-bar room 20, discharged by the first ventilation unit 15a on top board 1a again, make it form airflow circulating passage, allow switch cubicle bottom and top form convection current, prevent that humid air prolonged stay is in switch cubicle, cause insulating part in switch cubicle to make moist, insulation resistance reduces, and then produces electric discharge flashover phenomenon.
Low resistance semiconductor material coating 13 surfaces and insulation gas tank 2 surfaces are equipped with one deck SRTV antifouling flush paint layer, and above-mentioned SRTV antifouling flush paint layer is applied and formed by SRTV antifouling flush paint, purchased from Fujian Rui Sen Chemical Co., Ltd..The thickness of above-mentioned SRTV antifouling flush paint layer is 0.5mm.
In non-uniform electric field, the impact of humidity on atmospherical discharges voltage, hydrone easily attracts electronics and forms anion, and the free travel of electronics subtracts greatly, and the ionizing power in electric field also subtracts greatly.Along with humidity increases, electronics is attracted by hydrone and the ratio that becomes anion strengthens, and the ionization process in gap weakens, and therefore discharge voltage increases.On insulation gas tank 2 of the present utility model and low resistance semiconductor material coating 13, be provided with a kind of hydrophobic and oil repellent, prevent grease bonding, the good SRTV antifouling flush paint layer of clean surfaces performance, this coating can improve the anti-pollution flashover ability of switch cubicle, and there is hydrophobic and lyophobic property, prevent that humid air from producing condensation phenomenon on switch cubicle, form the continuous globule at insulation gas tank 2 outer surfaces, and then produce partial discharge and pollution flashover phenomenon.
SRTV antifouling flush paint layer has good electric insulating quality, and under the identical environment of salt density, pollution flashover voltage amplitude can be brought up to more than 200%, and incipient discharge voltage can improve more than 100%.The utility model insulating surface is provided with SRTV antifouling flush paint layer can be creepage than calculating, solve conventional modular system electroceramics external insulation creep distance the requirement that cannot reach heavy pollution district external insulation apart from 1.8 times by improving, and effectively prevents the generation of pollution flashover accident; SRTV antifouling flush paint layer has good hydrophobicity and quick, balanced, lasting migration of hydrophobicity, and the existing RTV RTV Silicone of antifouling flash coating layer strength ratio is high, adhesive force is superpower.Existing RTV RTV Silicone coating 3-5 in useful life, be greater than 15-20 the useful life of SRTV antifouling flush paint layer, adopts the useful life that this coating can extension device.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. an indoor semi-insulating switch cubicle, comprise shell, in described shell, be provided with bus, bus connecting sleeve, insulation gas tank, cable outlet sleeve pipe, grading shield, it is characterized in that, the top of described bus connecting sleeve is connected with described bus, bottom is fixedly connected with described insulation gas tank, and the surface that extends downward 5-30mm from the top of described bus connecting sleeve is provided with low resistance semiconductor material coating;
The top of described cable outlet sleeve pipe is fixedly connected with described insulation gas tank, and bottom is connected with described grading shield, and the surface that extends upwardly to 5-30mm from the bottom of described cable outlet sleeve pipe is provided with low resistance semiconductor material coating.
2. indoor semi-insulating switch cubicle as claimed in claim 1, is characterized in that, the surface that extends downward 18-22mm from the top of described bus connecting sleeve is provided with low resistance semiconductor material coating; The surface that extends upwardly to 18-22mm from the bottom of described cable outlet sleeve pipe is provided with low resistance semiconductor material coating.
3. indoor semi-insulating switch cubicle as claimed in claim 1 or 2, is characterized in that, the thickness of described low resistance semiconductor material coating is 0.1-1mm.
4. indoor semi-insulating switch cubicle as claimed in claim 3, is characterized in that, the thickness of described low resistance semiconductor material coating is 0.5mm.
5. indoor semi-insulating switch cubicle as claimed in claim 1 or 2, is characterized in that, the surface of described low resistance semiconductor material coating and described insulation gas tank is provided with one deck SRTV antifouling flush paint layer.
6. indoor semi-insulating switch cubicle as claimed in claim 5, is characterized in that, the thickness of described SRTV antifouling flush paint layer is 0.1-1mm.
7. indoor semi-insulating switch cubicle as claimed in claim 6, is characterized in that, the thickness of described SRTV antifouling flush paint layer is 0.4-0.6mm.
8. indoor semi-insulating switch cubicle as claimed in claim 1 or 2, it is characterized in that, in described shell, be also provided with Intelligent moisture-proof device, described Intelligent moisture-proof device comprises temperature and humidity controller, Temperature Humidity Sensor and heater, and above-mentioned three parts are electrically connected mutually.
9. indoor semi-insulating switch cubicle as claimed in claim 1 or 2, it is characterized in that, described shell comprises framework, top board, base plate, on described framework, be provided with three-stations load switch support, on described top board, three-stations load switch support and base plate, offer respectively the first ventilation unit, the second ventilation unit, the 3rd ventilation unit, described the first ventilation unit, the second ventilation unit, the 3rd ventilation unit are blind shaped.
10. indoor semi-insulating switch cubicle as claimed in claim 9, is characterized in that, described the first ventilation unit top is provided with cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320747101.6U CN203632066U (en) | 2013-11-22 | 2013-11-22 | Indoor semi-insulating switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320747101.6U CN203632066U (en) | 2013-11-22 | 2013-11-22 | Indoor semi-insulating switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN203632066U true CN203632066U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320747101.6U Expired - Lifetime CN203632066U (en) | 2013-11-22 | 2013-11-22 | Indoor semi-insulating switch cabinet |
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| CN (1) | CN203632066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638701A (en) * | 2018-11-16 | 2019-04-16 | 许继集团有限公司 | A kind of switchgear |
-
2013
- 2013-11-22 CN CN201320747101.6U patent/CN203632066U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638701A (en) * | 2018-11-16 | 2019-04-16 | 许继集团有限公司 | A kind of switchgear |
| CN109638701B (en) * | 2018-11-16 | 2020-11-17 | 许继集团有限公司 | Switch cabinet |
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Granted publication date: 20140604 |
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