CN103151724B - A kind of gas-insulated switchgear based on adsorbing in body - Google Patents
A kind of gas-insulated switchgear based on adsorbing in body Download PDFInfo
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- CN103151724B CN103151724B CN201310041329.8A CN201310041329A CN103151724B CN 103151724 B CN103151724 B CN 103151724B CN 201310041329 A CN201310041329 A CN 201310041329A CN 103151724 B CN103151724 B CN 103151724B
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- electrode
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- airtight container
- straight polarity
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Abstract
Based on the gas-insulated switchgear adsorbed in body, described gas-insulated switchgear is an airtight container (1) being packaged with insulating gas.Described airtight container (1), built with at least one pair of electrical contact electrode, is also equipped with particulate adsorption electrode (8,14), particulate collection device (6) and adsorbent equipment (15).Described insulating gas is fluorocarbon gas containing carbon and nitrogen or CO
2or the mist of air; Described particulate adsorption electrode (8,14) is a pair electrodes for removing dust, is separately fixed at the both sides of airtight container (1) inwall; Center line and the electrical contact center lines of electrodes of electrodes for removing dust are orthogonal.Particulate collection device (6) is arranged on the below of the straight polarity electrode in electrodes for removing dust, collects the particulate that straight polarity electrode comes off.Described air insulating device is also provided with adsorbent equipment; Adsorbent equipment is arranged on the top of airtight container inner surface, for adsorbing the low-molecular-weight gas produced due to reaction in the decomposition of described mist or airtight container.
Description
Technical field
The present invention relates to a kind of carbon elements gas that uses as the switchgear of dielectric, particularly a kind of fluorocarbon gas is as the switchgear of medium.
Background technology
SF
6gas has good insulating capacity, arc extinguishing ability, chemical stability and nontoxicity, is thus widely used in air insulating device, as gas-insulated transformer, gas insulation breaker, gas-insulated power transfer conduit etc.But, pure SF
6gas is very responsive to electric field inhomogeneities, high to equipment requirement on machining accuracy; And SF
6the electric discharge analyte of gas, as SO
2f
2, SOF
2, SF
4, SF
2, H
2s, SOF
4deng, be extremely toxic substance, threaten very large to personnel health; In addition, SF
6the greenhouse effect of gas are very large, and its global warming latent energy value (GWP) is approximately CO
223900 times of gas, and about 3200 life-spans in an atmosphere, therefore the United Nations's climate change pact contracting party is in the Kyoto Protocol to sign for 1997, by SF
6gas is classified as one of greenhouse gas of six kinds of Limited uses.Therefore scientific research personnel has carried out large quantifier elimination, ites is desirable to search out to substitute SF
6gas is used for the new medium of electric equipment.
At present, SF is replaced with pure gas
6gas is very difficult.So people attempt using mist to replace pure SF
6gas.Existing use SF at present
6/ N
2mist or SF
6/ CO
2mist substitutes pure SF
6the report of gas, uses containing SF
6mist have following advantage: reduce electrode surface flaw sensitivity, reduce gas liquefaction temperature, reduce costs, therefore there is good application prospect, particularly SF
6content 20% ~ 40% SF
6/ N
2mist.But, use containing SF
6mist fundamentally can not solve SF
6the extremely toxic substance contained in the greenhouse effect of gas and catabolite thereof is to the threat of the person.Therefore, be necessary to find not containing SF
6mist be used for high voltage electric power equip ment.
Mention in patent JP4119441B2 and use N
2or O
2or dry air or CO
2deng gas as primary insulation gas componant, and be mixed with the c-C of less than 20%
4f
8(octafluorocyclobutane), CF
3sF
5, C
3f
8or CF
3oSF
3deng the gas-insulated medium of gas as gas insulated apparatus;
Patent JP2004236459A, JP2006014411A etc. also mention and use c-C
4f
8(octafluorocyclobutane), C
3f
8with N
2, CO
2deng mist as insulation of electrical installation and arc-extinguishing medium.
Several patent a few class mixed gas mentioned described in use can reduce the global warming coefficient of insulating gas greatly above, can avoid SF simultaneously
6the use of gas, fundamentally solves SF
6extremely toxic substance is contained to the harm of the person in gas decomposition product.But also there is following problem: due to c-C in above-mentioned gas
4f
8(octafluorocyclobutane), C
3f
8deng containing carbon, so under the electric arc produced when drop-out current, in the process of gas generation dissociation and compound, there is the problem producing free carbon, if when the carbon produced is attached on the surface of the solid insulators such as insulator spacer, the electrical insulation capability of this part may be caused significantly to reduce.
At present, for the electrically conductive particles such as metal particle of device interior, have patent (Japanese Utility Model is real opens clear 62-57511 publication) to disclose a kind of trapping foreign matter device arranging waveform in tank floor, electrically conductive particles drops on low electric field place, realizes innoxious.Separately there is patent (Japanese Utility Model real fair 3-47323 publication) to disclose a kind of the curvature of the end of conduit component to be increased, electric field is alleviated with the method realizing reinforced insulation, end due to conduit component is the shape that electric field is easy to concentrated, and the curvature object therefore increasing end is to suppress to produce electric discharge from this position.But the method only works to a small amount of electrically conductive particles, for using carbon elements mist as the air insulating device of insulation and arc-extinguishing medium and inapplicable.
Summary of the invention
The object of the invention is the shortcoming overcoming above-mentioned prior art, a kind of gas-insulated switchgear is provided, the present invention can reduce the global warming coefficient of the gases used dielectric of electric equipment, and can not make decreasing insulating because of the decomposition of gas-insulated medium.
Gas-insulated switchgear of the present invention is an airtight container being packaged with insulating gas.Described airtight container, built with at least one pair of electrical contact electrode, is also equipped with particulate adsorption electrode, particulate collection device and adsorbent equipment.Described insulating gas is fluorocarbon gas containing carbon and nitrogen or CO
2or the mist of air.Described electrical contact electrode comprises fixed contact and moving contact; Described particulate adsorption electrode is a pair electrodes for removing dust, is separately fixed at the both sides of airtight container inwall.Center line and the electrical contact center lines of electrodes of electrodes for removing dust are orthogonal; Particulate collection device is arranged on the below of straight polarity electrode in electrodes for removing dust, collects the particulate that straight polarity electrode comes off; Described gas-insulated switchgear is also provided with adsorbent equipment.Adsorbent equipment is arranged on the top of airtight container inner surface, for adsorbing the low-molecular-weight gas produced due to reaction in the decomposition of described mist or airtight container.
Gas-insulated switchgear of the present invention is conducted electricity by the described electrical contact electrode state of keeping in touch, and when electric current disconnects, makes above-mentioned electrode separation and electric arc occurs in above-mentioned insulating gas, carrying out drop-out current by extinguish arcs.Described insulating gas is the fluorocarbon gas containing carbon, as octafluorocyclobutane (c-C
4f
8), octafluoropropane (C
3f
8) etc. with nitrogen or CO
2or the mist of air etc.
The feature of described gas-insulated switchgear is to have installed particulate adsorption electrode and particulate collection device.
Described particulate adsorption electrode is a pair electrodes for removing dust, and center line and the electrical contact center lines of electrodes of electrodes for removing dust are orthogonal.Negative-pole electrode in a pair electrodes for removing dust is bar electrode, and straight polarity electrode is half cylinder electrode; Described negative-pole electrode is arranged on the side of airtight container inwall, and the straight polarity electrode of described semi-circular cylindrical is arranged on airtight container inwall side, produces vibration by the magnet control be arranged between described straight polarity electrode and airtight container inwall.The below of described straight polarity electrode is provided with particulate collection device, and after electrodes for removing dust power-off, the particulate be adsorbed on straight polarity electrode falls into particulate collection device.Simultaneously in order to ensure the collection to particulate, when electrical contact electrode cut-offs, moving contact, to the lateral movement of particulate adsorption electrode positive polarity one, makes electric arc produce in straight polarity electrode side, ensures that particulate can be adsorbed on straight polarity electrode; Outlet casing tube is arranged on the opposite side that electric arc produces simultaneously, avoids the carbon particulate produced to drop on the surface of outlet casing tube.In airtight container, also adsorbent equipment is installed in addition, adsorbs reaction in the decomposition of above-mentioned mist or airtight container and the low-molecular-weight gas that produces.Described adsorbent equipment is by holder, and mesh bag and adsorbent are formed.Holder is fixed on the top of airtight container inner surface by the method for screw rod or welding.
Described particulate collection device is designed to particulate structure of trap, particulate once enter, because particulate trap local field strength is low, make particulate inerting, also scribble stickum on particulate trap surface simultaneously, to strengthen the inerting effect to particulate, make it can not endanger insulation again.Particulate collection device is provided with particulate division board in addition, described particulate division board is a rectangle insulation board, described particulate division board while be connected with fixed contact bearing, described particulate division board another side is connected with airtight container internal partition, and the effect of particulate division board is the surface avoiding solia particle to be adsorbed on lower outlet casing tube.Described lower outlet casing tube is arranged on the dividing plate in airtight container.
Described gas-insulated switchgear is also provided with adsorbent equipment.Adsorbent equipment is arranged on the top of airtight container inner surface, for adsorbing the low-molecular-weight gas produced due to reaction in the decomposition of described mist or airtight container.
The present invention is a kind of gas-insulated switchgear of low temperature chamber effect insulating gas, can prevent the deterioration of gas-insulated performance.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of the gas-insulated switchgear of one embodiment of the present invention;
Fig. 2 is the partial schematic diagram that switchgear of the present invention is in isolation and ground state, and Fig. 2 a is the partial schematic diagram that switchgear is in isolation, and Fig. 2 b is the partial schematic diagram that switchgear is in ground state;
Fig. 3 is the present invention's particulate adsorption electrode used vertical view;
Fig. 4 is that the present invention's adsorbent equipment used is analysed and observe and vertical view, and Fig. 4 a is cutaway view, and Fig. 4 b is vertical view;
Fig. 5 is the present invention's netted particulate collection device vertical view used.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Gas-insulated switchgear of the present invention is an airtight container being packaged with insulating gas.Described airtight container, built with at least one pair of electrical contact electrode, is also equipped with particulate adsorption electrode, adsorbent equipment and particulate collection device.
Fig. 1 is the partial sectional view of the gas-insulated switchgear of one embodiment of the present invention.Figure 1 shows that an on-load switch is in conducting state.The fluorocarbon gas of carbon elements and nitrogen or CO is packaged with in airtight container 1
2or the mist of air, there is upper outlet casing tube 2 in airtight container 1, lower outlet casing tube 3, movable contact block 4, grounding contact 5, moving contact 12, moving contact operation rotating shaft 13, fixed contact and arc extinguishing grid pieces 10, particulate division board 7, netted particulate collection device 6, and adsorbent equipment 15; Comprise the particulate adsorption electrode be made up of negative-pole electrode 14 and straight polarity electrode 8 in addition.
Negative-pole electrode 14 in described particulate adsorption electrode is bar electrode, and straight polarity electrode 8 is half cylinder electrode; Described negative-pole electrode 14 is arranged on the side of airtight container 1 inwall, described straight polarity electrode is arranged on the inner opposite side of airtight container 1, straight polarity electrode 8 is fixed on the side of airtight container 1 inwall by fixing spring 11, between straight polarity electrode 8 and airtight container 1, electromagnet 9 is also housed, electromagnet 9 is positioned at the center of straight polarity electrode 8, during electromagnet 9 power-off, the actuating strut of electromagnet 9 withstands on straight polarity electrode 8, and fixing spring 11 is in extended state; When electromagnet 9 is energized, the actuating strut action retraction of electromagnet 9, by the stretching action of fixing spring 11, straight polarity electrode 8 bounces back, and namely passes through power on/off to electromagnet 9 and coordinates fixing spring 11 that straight polarity electrode 8 can be made to vibrate.During switchgear action of the present invention, moving contact operation rotating shaft 13 operates moving contact 12 and is rotated counterclockwise, arc extinguishing grid pieces extinguish arcs.After arc extinction, external direct current power supply is powered to particulate adsorption electrode 14 and 8, and the particulate produced by electric arc is adsorbed on straight polarity electrode 8 due to the effect of electrostatic.After cut-offfing absorption several times, make straight polarity electrode 8 produce vibration to electromagnet 9 power supply, the solia particle be adsorbed on above straight polarity electrode 8 is fallen into be contained in the particulate collection device 6 below straight polarity electrode 8.
Described lower outlet casing tube 3 is arranged on the opposite side of moving contact 12 traffic direction; Particulate division board 7 is arranged between the dividing plate 16 of fixed contact bearing 17 and airtight container 1, and its effect is the surface avoiding solia particle to be adsorbed on lower outlet casing tube 3.The low-molecular-weight gas that adsorbent equipment 15 adsorbs reaction in the decomposition of above-mentioned mist or airtight container and produces.Upper outlet casing tube 2 is positioned at airtight container 1 upper surface, and lower outlet casing tube 3 is positioned on the dividing plate 16 of airtight container 1 inside.Described upper and lower outlet casing tube is used for the insulation of electrified body and airtight container 1 and is coupled together by the conductor inside and outside airtight container 1.
Fig. 2 is the partial schematic diagram that switchgear of the present invention is in isolation and ground state, and Fig. 2 a is that switchgear is in isolation schematic diagram, and Fig. 2 b is that switchgear is in ground state schematic diagram; Electric arc is produced at fixed contact and between arc extinguishing grid pieces 10 and moving contact 12 in switch interrupting process; When switch disconnects, moving contact 12 moves to upper right.
Fig. 3 is described particulate adsorption electrode vertical view.As shown in Figure 3, negative-pole electrode 14 is a stick electrode, can produce higher field intensity at the lower voltage, and straight polarity electrode 8 is semicircular cylinder electrode, can adsorbent solid particulate, and for ensureing that electrode is even, described semicircular cylinder electrode two ends profile is hollows 18.
Fig. 4 is described adsorbent equipment cutaway view.As shown in Figure 4, adsorbent equipment 15 is by holder 151, and mesh bag 153 and adsorbent 152 are formed.Holder 151 is fixed on the top of airtight container 1 inner surface by the method for screw rod or welding; Adsorbent 152 loads in mesh bag 153.The material of adsorbent 152 can be activated alumina, molecular sieve, silica gel etc.; The mesh bag 153 that adsorbent is housed puts into holder 151.Holder 151 is the porous boxes be made up of sheet iron or steel plate.
Fig. 5 is described particulate collection device vertical view.As shown in Figure 5, particulate collection device 6 is one with the sheet metal of particulate trap 61, is fixed on the dividing plate 16 of airtight container 1; The left half of particulate trap of particulate collection device 6 is less, and the particulate trap depth of right half part and width are all larger.After solia particle falls into particulate trap 61, because local field strength in trap reduces, the solia particle be embedded not easily is moved again, particulate trap 61 surface also scribbles stickum simultaneously, fixed position is sticked can not move, play the effect of collection and fixing particulate.
Claims (4)
1. based on the gas-insulated switchgear adsorbed in body, it is characterized in that: described gas-insulated switchgear is the airtight container (1) of an inclosure insulating gas; Described airtight container (1), built with at least one pair of electrical contact electrode, is also equipped with particulate adsorption electrode (8,14), particulate collection device (6) and adsorbent equipment (15); Described electrical contact electrode comprises fixed contact and moving contact; Described insulating gas is fluorocarbon gas containing carbon and nitrogen or CO
2or the mist of air; Described particulate adsorption electrode (8,14) is a pair electrodes for removing dust, is separately fixed at the both sides of airtight container (1) inwall; Center line and the electrical contact center lines of electrodes of electrodes for removing dust are orthogonal; Particulate collection device (6) is arranged on the below of the straight polarity electrode in electrodes for removing dust, collects the particulate that straight polarity electrode comes off; Described gas-insulated switchgear is also provided with adsorbent equipment; Adsorbent equipment is arranged on the top of airtight container inner surface, for adsorbing the low-molecular-weight gas produced due to reaction in the decomposition of described fluorine carbon mist or airtight container;
Described particulate collection device (6) is fixed on dividing plate (16); Particulate collection device (6) is one block of sheet metal with particulate trap (61); The left half of particulate trap of particulate collection device (6) is less, the particulate trap depth of right one side of something and width larger; Described particulate trap (61) surface scribbles stickum;
In described airtight container (1), particulate division board (7) is housed, particulate division board (7) is arranged between the dividing plate (16) of fixed contact bearing (17) and airtight container (1), prevent solia particle to be adsorbed on the surface of lower outlet casing tube (3), described fixed contact bearing (17) is for installing the fixed contact of electrical contact electrode.
2. gas-insulated switchgear according to claim 1, is characterized in that: in described particulate adsorption electrode, and negative-pole electrode (14) is bar electrode, and straight polarity electrode (8) is semi-circular cylindrical electrode; Described negative-pole electrode is arranged on the side of airtight container inwall, the straight polarity electrode of described semi-circular cylindrical is arranged on the opposite side of airtight container (1) inwall, produces vibration by the magnet control be arranged between described straight polarity electrode and airtight container inwall; Described particulate adsorption electrode is powered by external direct current power supply.
3. gas-insulated switchgear according to claim 2, it is characterized in that: described straight polarity electrode (8) is fixed on airtight container (1) by fixing spring (11), electromagnet (9) is also housed between straight polarity electrode (8) and airtight container (1), and electromagnet (9) is positioned at the center of straight polarity electrode (8); During electromagnet (9) power-off, the actuating strut of electromagnet (9) withstands on straight polarity electrode (8), and fixing spring (11) is in extended state; During electromagnet (9) energising, the actuating strut action retraction of electromagnet (9), by the stretching action of fixing spring (11), straight polarity electrode (8) bounces back.
4. gas-insulated switchgear according to claim 1, is characterized in that: described adsorbent equipment (15) is by holder (151), and mesh bag (153) and adsorbent (152) are formed; Holder (151) is fixed on the top of airtight container (1) inner surface; Adsorbent (152) loads in mesh bag (153); Mesh bag (153) puts into holder (151); Holder (151) is the porous box be made up of sheet iron or steel plate.
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|---|---|---|---|
| CN201310041329.8A CN103151724B (en) | 2013-02-01 | 2013-02-01 | A kind of gas-insulated switchgear based on adsorbing in body |
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|---|---|---|---|
| CN201310041329.8A CN103151724B (en) | 2013-02-01 | 2013-02-01 | A kind of gas-insulated switchgear based on adsorbing in body |
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| CN103151724A CN103151724A (en) | 2013-06-12 |
| CN103151724B true CN103151724B (en) | 2016-03-16 |
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|---|---|---|---|---|
| EP3107809B1 (en) * | 2014-02-19 | 2021-07-07 | Tetra Laval Holdings & Finance S.A. | Power supply unit |
| CN105149096A (en) * | 2015-08-18 | 2015-12-16 | 华北电力大学 | Metal particle trap for direct-current gas-insulated power transmission line |
| CN106098440A (en) * | 2016-06-06 | 2016-11-09 | 柳州市海格电气有限公司 | 110kV sulfur hexafluoride gas-insulating metal enclosed switch manufacture method |
| CN105846338A (en) * | 2016-06-06 | 2016-08-10 | 柳州市海格电气有限公司 | Method for manufacturing 500kV semi-enclosed sulphur hexafluoride insulated switchgear |
| CN106099713A (en) * | 2016-06-06 | 2016-11-09 | 柳州市海格电气有限公司 | 220kV semi-enclosed sulfur hexafluoride gas-insulating switchgear manufacture method |
| CN105896354A (en) * | 2016-06-06 | 2016-08-24 | 柳州市海格电气有限公司 | Fabrication method of 500kV SF6 gas insulated metal-enclosed switchgear |
| CN105896356A (en) * | 2016-06-06 | 2016-08-24 | 柳州市海格电气有限公司 | Fabrication method of 110kV SF6 gas insulated semi-closed switchgear |
| CN106786117A (en) * | 2017-01-22 | 2017-05-31 | 北京合锐赛尔电力科技股份有限公司 | A kind of halogenated hydrocarbons insulating gas and its application |
| CN111102175B (en) * | 2019-12-31 | 2021-11-30 | 汇网电气有限公司 | Inflating device and inflating method for environment-friendly inflating cabinet |
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Effective date of registration: 20190104 Address after: No. 1 Muyang Road, Hangjiang Economic Development Zone, Yangzhou City, Jiangsu Province, 225000 Patentee after: YANGZHOU DEYUN ELECTRICAL EQUIPMENT GROUP CO., LTD. Address before: 100190 No. 6 North of Zhongguancun, Haidian District, Haidian District, Beijing Patentee before: Institute of Electrical Engineering of the Chinese Academy of Sciences |