CN103683058A - Installation and debugging control method for outdoor GIS and GIL device used in special climate - Google Patents
Installation and debugging control method for outdoor GIS and GIL device used in special climate Download PDFInfo
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- CN103683058A CN103683058A CN201310703448.5A CN201310703448A CN103683058A CN 103683058 A CN103683058 A CN 103683058A CN 201310703448 A CN201310703448 A CN 201310703448A CN 103683058 A CN103683058 A CN 103683058A
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Abstract
The invention discloses an installation and debugging control method for an outdoor GIS and GIL device used in special climate. The method comprises the following steps that (1) an air chamber is installed, wherein the air chamber is a closed cavity defined by a first part and a second part, the first part and the second part are connected through a first flange and a second flange correspondingly arranged on the first part and the second part, and a first sealing groove and a second sealing groove are correspondingly formed in the first flange and the second flange respectively; (2) the air chamber is filled with SF6 gas. According to the installation and debugging control method for the outdoor GIS and GIL device used in special climate, a series of measures are provided for installation and debugging quality control over the outdoor GIS and GIL device in special climate, research and analysis are systematically and comprehensively conducted on the installation and debugging quality control critical points of the 500kV outdoor GIS and GIL device in the four aspects of the construction organization, installation environment, pre-installation preparation and installation technology requirements for installation and debugging of the GIS and GIL device, corresponding control measures are formulated, and potential safety hazards are avoided.
Description
Technical field
The present invention relates to power equipment mounting technique field, be specifically related to the Installation and Debugging method of quality control under the outdoor GIS of a kind of 500kV and GIL equipment special climate.
Background technology
Along with gas-insulated metal-enclosed occupation area of equipment is little, reliability is high, high safety, the advantages such as maintenance workload is little highlight day by day, application in electric power system is also more and more extensive at home for it, but according to current domestic GIS(gas-insulated metal closed power transmission line) and GIL(Cubicle Gas-Insulated Switchgear) the operation maintenance experience of transformer station, the fault case of 500kV GIS and GIL equipment is not within minority, and most faults cause because Installation and Debugging quality is not in place, the all-sealed structure of gas-insulated metal-enclosed equipment makes again the contrast locating of fault more difficult, fault point is easy-to-search not, after causing the accident, the average interruption maintenance time is longer than conventional equipment, cause tremendous economic loss to electric power system and social production life.
No matter be unit in charge of construction at present, equipment manufacturer, supervisor or operation maintenance department all lack further investigation to gas-insulated metal-enclosed rigging up and debugging Key Points of Quality Control, for gas-insulated metal-enclosed rigging up and debugging quality dispersion problem, do not launch research, more do not set up the long-acting system of the Installation and Debugging quality control of a set of gas-insulated metal-enclosed equipment under special climate, cause unit in charge of construction's ubiquity quality problems in rigging up and debugging process, supervisor is not tight to check on to gas-insulated metal-enclosed rigging up and debugging quality control, run unit can not accurately be held gas-insulated metal-enclosed rigging up and debugging quality in the check stage, these have left great potential safety hazard all to the operation of gas-insulated metal-enclosed equipment.
Summary of the invention
For above deficiency, the object of this invention is to provide a kind of adjustment control method under outdoor GIS and GIL equipment special climate, it systematically prepares from the construction organization of GIS and GIL rigging up and debugging, installation environment, installation and mounting process requires these 4 aspects to carry out the outdoor GIS of 500kV and GIL rigging up and debugging Key Points of Quality Control are formulated to corresponding control measure.
For realizing above object, the technical scheme that the present invention has taked is:
An adjustment control method under outdoor GIS and GIL equipment special climate, it comprises following two steps:
Step 2, by air chamber described in SF6 gas charge;
Wherein, described step 1 comprises the following steps:
Step 11, on angle in the outer part, the first seal groove and the second seal groove bottom, be coated with respectively one deck silicone grease;
Step 12, even floating described silicone grease, make to be all covered with on described angle silicone grease, and guarantee that silicone grease does not enter in air chamber;
Whether step 13, inspection the one O shape seal gasket and the 2nd O shape seal gasket have damage and dirt, with absolute ethyl alcohol, clean up, and then they are pressed into respectively uniformly in the first seal groove and the second seal groove near outside region;
Step 14, at an O shape seal gasket and the first seal groove, be coated with one deck silicone grease in the contact position at top in the outer part, at the 2nd O shape seal gasket and the second seal groove, be coated with equally one deck silicone grease in the contact position at top in the outer part, then with round brush, silicone grease is evenly floating, and guarantee that silicone grease does not enter in air chamber;
Step 15, at an O shape seal gasket and the 2nd O shape seal gasket, to first flange at respective external edge and the second flange face, be evenly coated with one deck silicone grease, and guarantee that silicone grease does not enter in air chamber;
Step 16, confirmation first and second portion are inner can refute first and second portion to connect by the docking realization of the first flange and the second flange without any foreign matter;
Step 17, the first flange and the second flange joint encapsulation process, the sealing oil nozzle by flange sealing groove place injects enough silicone grease, makes the space between two flanges and seal gasket be full of silicone grease;
Step 18, air chamber is vacuumized to processing, in vacuum, every 10min, observe the reading of a vacuum meter, monitor when vacuum meter reading reaches 133.3Pa, continue to vacuumize 30min, stop 4h and be not less than 133.3Pa, then can carry out the operation of step 2 after taking out 2h, otherwise, re-start encapsulation process, again vacuumize observation;
Step 19, inflated after 8h, adopted local bandaging strapping to carry out gas leak detection;
Described step 2 comprises:
Before step 21, SF6 gas charge, charger and pipeline be clean, without moisture, without greasy dirt, pipeline connects ne-leakage;
Step 22, according to the requirement of electric device installing engineering commissioning test standard GB50150-2006 to SF6 gas sample 10% sampling observation purity, can use after qualified; Micro-water project will be examined entirely, and the gas of guaranteeing to inject air chamber is qualified gas;
Step 23, in strict accordance with the operation that requires to vacuumize gas injection.
The refuting of step 16 connects painting one deck sealing of operating in described in step 11-15 with carrying out in the 1h of silicone grease.
While being coated with sealing silicone grease, must not make it flow into an O shape seal gasket, the 2nd O shape seal gasket inner side to prevent that sealed silicon fat from contacting with SF6 gas.
Indoor the carrying out that is docked at moistureproof tent or cleaning of described the first flange and the second flange.
In the middle of the paulin top of described moistureproof tent, backing, to prevent rainy day ponding, is installed an infrared ray and is driven damp lamp in moistureproof tent.
In described moistureproof tent, hygrometer is installed, with the humidity in the moistureproof tent of Real-Time Monitoring, and with dry air generator, in moistureproof tent, blows dry air in a side of moistureproof tent.
Flooring laminate is laid so that clean in described moistureproof tent ground.
The inside illumination of described moistureproof tent is greater than 75LX.
Two sealing water sleeves of described moistureproof tent band, the junction sealing of shake sleeve and moistureproof tent, described shake sleeve length is 2～3 meters.
The four sides of moistureproof tent removably connects, so that equipment enters in moistureproof tent, installs or docking, at moistureproof tent mouth, with VELCRO or magnetic stripe, carries out temporary sealing.
The present invention compared with prior art, its beneficial effect is: the series of measures that the invention provides the Installation and Debugging quality control under outdoor GIS and GIL equipment special climate, it systematically prepares from the construction organization of GIS and GIL rigging up and debugging, installation environment, installation and mounting process requires these 4 aspects to carry out researching and analysing the outdoor GIS of 500kV and GIL rigging up and debugging Key Points of Quality Control, and formulate corresponding control measure, avoided the generation of potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the structural representation of moistureproof tent;
Fig. 2 is the moisture preventive measure sketch of GIS or the aerial vertical butt joint of GIL equipment;
Fig. 3 is the moisture preventive measure sketch of the aerial level docking of GIS or GIL equipment.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present invention is described in further details.
Embodiment
The present embodiment provides the series of measures of the Installation and Debugging quality control under outdoor GIS and GIL equipment special climate.Systematically from the construction organization of GIS and GIL rigging up and debugging, installation environment, installation, prepare and mounting process requires these 4 aspects to carry out the researching and analysing of the outdoor GIS of 500kV and GIL rigging up and debugging Key Points of Quality Control, and formulate corresponding control measure.
The present embodiment shows the series of measures of the Installation and Debugging quality control under outdoor GIS and GIL equipment special climate, and it comprises on-the-spot installation environment control measure under special climate, air chamber installation sealing control measure, inner cleanliness factor control measure are installed, SF6 gas and purity control measure are installed.
One, organiztion measure:
1) moistureproof tent has rainproof, windproof, dust reduction capability, can tolerate strong breeze.
2) moistureproof tent ground must be removed from office by laying floor, is convenient to clean.
3) in moistureproof tent, be equipped with two power supply disks with alternating current 220V, 380V plug
4) used tool palpus record is installed, is checked again after hours, prevent from being retained in air chamber.
5) air chamber is installed and must be completed by special designated person, must wear cap, mouth mask, wears without buckleing coverall during operation.
6), during the aerial vertical butt joint of equipment, at moistureproof tent, a staff is set outward and is responsible for carrying out specially crane commander work.
Two, the technical measures of preparation and mounting process before installation environment, installation
1, installation environment control method
Please refer to shown in Fig. 1, damp proofing of ground tent is moistureproof, the dustproof measure of when docking of GIS parts ground.Moistureproof tent is converted by the moistureproof tent of activity of 3m * 3m, backing in the middle of moistureproof tent top, prevent rainy day ponding, an infrared ray is installed in moistureproof tent and is driven damp lamp, and with dry air generator, in moistureproof tent, blow dry air in a side of moistureproof tent.
1) humidity of moistureproof tent can be controlled and be no more than 80%(installation hygrometer), when humidity is excessive, can use dry air generator, adopt enterprising lower-discharging type to be blown into dry air, dehumidify.
2) the inside illumination of moistureproof tent wants enough, should be greater than 75LX.Back shop adopts transparent fabric, and normally daytime, illumination was enough.
3) four sides of moistureproof tent can movable or dismounting, so that equipment enters in moistureproof tent, installs or docking, at moistureproof tent mouth, should carry out temporary sealing with VELCRO or magnetic stripe.
4) two special shake sleeves of sealing of moistureproof tent band, the necessary good seal in junction of shake sleeve and moistureproof tent, shake sleeve length is 2～3 meters.
5) when equipment carries out aerial vertical butt joint, scaffold should be first installed, mounted scaffold should be placed a small-sized moistureproof tent, and can hold three staff and carry out work.
2, air chamber is installed sealing control method
Air chamber is installed and can be undertaken by vertical butt joint or two kinds of forms of level docking, please refer to shown in Fig. 2 and Fig. 3.Before carrying out flange docking, should will scribble the seal groove of the O shape seal gasket indentation sealing flange of silicone grease, the sealing gasket between abutted flange must all more renew packing ring before docking.More renewing before packing ring, checking that " O " shape seal groove and flange surface have or not indentation, gravure, dirt etc., before being coated with fluid sealant, with solvent, cleaned up, and fully dry.While being coated with fluid sealant, must not making it flow into sealing gasket (circle) inner side and contact with SF6 gas.
1) the sealing silicone grease using should possess good waterproof, antiseptic property, before use, should first at adapter mouth, open a little angle, then adapter mouthful is connected on sealed rubber pipe.
2) on angle in the outer part at the bottom of seal groove, be coated with one deck sealing silicone grease, by gas inner side, can not scribble sealing silicone grease, should note sealing silicone grease and must not use with the solvent of other any models.
3) even floating sealing silicone grease face, makes to be all covered with sealing silicone grease on the angle of the outer portion of bottom land.
4) check whether special-purpose " O " shape seal gasket has damage and dirt, with absolute ethyl alcohol, cleans up, and then it is put into groove near outside region.
5) at " O " shape seal gasket and seal groove, be coated with one deck sealing silicone grease in the contact position at top in the outer part, with hand, silicone grease face is evenly floating.
6) at " O " shape seal gasket, to the flange face of external margin, be evenly coated with the thick sealing silicone grease of the about 1mm of one deck, notice that the connection of flange must complete in the 1h after gluing.Should be by unnecessary cleaning out after connection.
7) confirmation element internal can be refuted and connect without any foreign matter, and the moment values that the connection Ying An producer of parts bolt provides is carried out fastening.
8) in vacuum, every 10min, observe the reading of a vacuum meter, monitor when vacuum meter reading reaches 133.3Pa, continue to vacuumize 30min, stop 4h and be not less than 133.3Pa, then take out after 2h inflatable.If stop 4h lower than 133.3Pa, need re-start encapsulation process, again vacuumize observation.In vacuum, as vacuum pump cut, should close immediately closing valve, and check whether the air of determining vacuum pump is back to sebific duct or SF6 air seal chamber.
9) inflated after 8h, adopted local bandaging strapping to carry out gas leak detection.With transparent plastic cloth and adhesive tape, all docking ports (comprising density monitor, inflation inlet, earthed switch shaft seal, ground wire capping, power cable connector etc.) of GIS are wrapped up tight.After wrapping 24h, quantitatively detect, SF6 quantity of gas leakage should meet the requirements.
3, inner cleanliness factor control method is installed
Part in SF6 air chamber will keep very high cleannes in assembling process, and concrete measure is as follows:
1) assembly work should be without dust storm, sleet, and relative air humidity is less than under 80% condition and carries out, and the cleaning agent of use, sealing silicone grease and Wiping material meet product technology regulation.
2) in the indoor or moistureproof tent of cleaning, carry out cleaning inside and flange docking.
3) housing of having cleared up will be protected with Polypropylence Sheet wrapping.
4) carrying out the final personnel that assemble must keep both hands and clothing without spot and grit.
5) when processing air chamber inside, should use disposable glove to guarantee cleanliness factor.
6), in the process of uncapping, clear up, docking at air chamber, near operation area, should avoid civil engineering, welding, mechanical grinding etc. to cause the operation of dust.
7) before the complete sealing of air chamber inside processing, with dust catcher, clear up, in case the tiny foreign material such as hair, dust are stayed in air chamber.
4, SF6 gas and purity control method are installed
1) first guarantee that it is qualified gas that producer transports to on-the-spot SF6, requires producer that the documentary evidence of purity and micro-hydration lattice is provided.
2) according to the requirement of electric device installing engineering commissioning test standard GB50150-2006 to new gas sampling 10% sampling observation purity, can use after qualified.Micro-water project will be examined entirely, and the gas of guaranteeing to inject air chamber is qualified gas.
3), before SF6 gas charge, charger and pipeline be clean, without moisture, without greasy dirt, pipeline connects ne-leakage.
4) in strict accordance with the operation that requires to vacuumize gas injection.
Above-listed detailed description is for the illustrating of possible embodiments of the present invention, and this embodiment is not in order to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the scope of the claims of this case.
Claims (10)
1. the adjustment control method under outdoor GIS and GIL equipment special climate, is characterized in that, it comprises following two steps:
Step 1, air chamber are installed, the closed cavity that described air chamber Wei You first and second portion surround, described first and second portion are realized refuting by corresponding the first flange of arranging on the two and the second flange and are connect, and are respectively equipped with corresponding the first seal groove and the second seal groove on the first flange and the second flange;
Step 2, by air chamber described in SF6 gas charge;
Wherein, described step 1 comprises the following steps:
Step 11, on angle in the outer part, the first seal groove and the second seal groove bottom, be coated with respectively one deck silicone grease;
Step 12, even floating described silicone grease, make to be all covered with on described angle silicone grease, and guarantee that silicone grease does not enter in air chamber;
Whether step 13, inspection the one O shape seal gasket and the 2nd O shape seal gasket have damage and dirt, with absolute ethyl alcohol, clean up, and then they are pressed into respectively uniformly in the first seal groove and the second seal groove near outside region;
Step 14, at an O shape seal gasket and the first seal groove, be coated with one deck silicone grease in the contact position at top in the outer part, at the 2nd O shape seal gasket and the second seal groove, be coated with equally one deck silicone grease in the contact position at top in the outer part, then with round brush, silicone grease is evenly floating, and guarantee that silicone grease does not enter in air chamber;
Step 15, at an O shape seal gasket and the 2nd O shape seal gasket, to first flange at respective external edge and the second flange face, be evenly coated with one deck silicone grease, and guarantee that silicone grease does not enter in air chamber;
Step 16, confirmation first and second portion are inner can refute first and second portion to connect by the docking realization of the first flange and the second flange without any foreign matter;
Step 17, the first flange and the second flange joint encapsulation process, the sealing oil nozzle by the first seal groove and the second seal groove place injects enough silicone grease, makes the space between two flanges and seal gasket be full of silicone grease;
Step 18, air chamber is vacuumized to processing, in vacuum, every 10min, observe the reading of a vacuum meter, monitor when vacuum meter reading reaches 133.3Pa, continue to vacuumize 30min, stop 4h and be not less than 133.3Pa, then can carry out the operation of step 2 after taking out 2h, otherwise, re-start encapsulation process, again vacuumize observation;
Step 19, inflated after 8h, adopted local bandaging strapping to carry out gas leak detection;
Described step 2 comprises:
Before step 21, SF6 gas charge, charger and pipeline be clean, without moisture, without greasy dirt, pipeline connects ne-leakage;
Step 22, according to the requirement of electric device installing engineering commissioning test standard GB50150-2006 to SF6 gas sample 10% sampling observation purity, can use after qualified; Micro-water project will be examined entirely, and the gas of guaranteeing to inject air chamber is qualified gas;
Step 23, in strict accordance with the operation that requires to vacuumize gas injection.
2. the adjustment control method under outdoor GIS according to claim 1 and GIL equipment special climate, is characterized in that, the refuting of step 16 connects in the 1h that operates in the painting one deck silicone grease described in step 11-15 carries out.
3. the adjustment control method under outdoor GIS according to claim 2 and GIL equipment special climate, it is characterized in that, while being coated with sealing silicone grease, must not make it flow into an O shape seal gasket, the 2nd O shape seal gasket inner side to prevent that sealed silicon fat from contacting with SF6 gas.
4. the adjustment control method under outdoor GIS according to claim 1 and GIL equipment special climate, is characterized in that, indoor the carrying out that is docked at moistureproof tent or cleaning of described the first flange and the second flange.
5. the adjustment control method under outdoor GIS according to claim 4 and GIL equipment special climate, is characterized in that, in the middle of the paulin top of described moistureproof tent, backing, to prevent rainy day ponding, is installed an infrared ray and driven damp lamp in moistureproof tent.
6. the adjustment control method under outdoor GIS according to claim 4 and GIL equipment special climate, it is characterized in that, in described moistureproof tent, hygrometer is installed, with the humidity in the moistureproof tent of Real-Time Monitoring, and with dry air generator, in moistureproof tent, blow dry air in a side of moistureproof tent.
7. according to the outdoor GIS described in claim 4-6 any one and the adjustment control method under GIL equipment special climate, it is characterized in that, flooring laminate is laid so that clean in described moistureproof tent ground.
8. according to the outdoor GIS described in claim 4-6 any one and the adjustment control method under GIL equipment special climate, it is characterized in that, the inside illumination of described moistureproof tent is greater than 75LX.
9. according to the outdoor GIS described in claim 4-6 any one and the adjustment control method under GIL equipment special climate, it is characterized in that, two sealing water sleeves of described moistureproof tent band, the junction sealing of shake sleeve and moistureproof tent, described shake sleeve length is 2～3 meters.
10. according to the outdoor GIS described in claim 4-6 any one and the adjustment control method under GIL equipment special climate, it is characterized in that, the four sides of moistureproof tent removably connects, so that equipment enters in moistureproof tent and installs or docking, at moistureproof tent mouth, with VELCRO or magnetic stripe, carry out temporary sealing.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522592A (en) * | 2016-11-03 | 2017-03-22 | 国家电网公司 | Mobile armor hanging dustproof shed for assembling of GIS |
| CN108631201A (en) * | 2018-06-06 | 2018-10-09 | 中国三冶集团有限公司 | A kind of GIS flanges dock comprehensive gatherer and method |
| CN109173319A (en) * | 2018-09-06 | 2019-01-11 | 华北电力大学 | A kind of environment-friendly type insulated gas screening technique and the method for improving direct current transportation pipe-line wrapping |
| CN110797791A (en) * | 2019-11-04 | 2020-02-14 | 云南送变电工程有限公司 | Method for overhauling lower 500kVGIL tubular bus without accompanying shutdown |
| CN111589800A (en) * | 2019-12-30 | 2020-08-28 | 江苏恒高电气制造有限公司 | Self-propelled GIL and GIS shell inner chamber cleaning device |
| CN112152095A (en) * | 2020-08-25 | 2020-12-29 | 国网河北省电力有限公司建设公司 | Movable combined dustproof cabinet for GIS combined electrical apparatus and assembling method thereof |
| CN112557247A (en) * | 2020-12-01 | 2021-03-26 | 国网福建省电力有限公司建设分公司 | GIS (gas insulated switchgear) intracavity humidity detection method considering installation environment factors |
| CN113097951A (en) * | 2021-04-01 | 2021-07-09 | 云南送变电工程有限公司 | Method for hoisting vertical expansion joint of lower 500kVGIL pipeline bus |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522592A (en) * | 2016-11-03 | 2017-03-22 | 国家电网公司 | Mobile armor hanging dustproof shed for assembling of GIS |
| CN108631201A (en) * | 2018-06-06 | 2018-10-09 | 中国三冶集团有限公司 | A kind of GIS flanges dock comprehensive gatherer and method |
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| CN109173319A (en) * | 2018-09-06 | 2019-01-11 | 华北电力大学 | A kind of environment-friendly type insulated gas screening technique and the method for improving direct current transportation pipe-line wrapping |
| CN110797791A (en) * | 2019-11-04 | 2020-02-14 | 云南送变电工程有限公司 | Method for overhauling lower 500kVGIL tubular bus without accompanying shutdown |
| CN111589800A (en) * | 2019-12-30 | 2020-08-28 | 江苏恒高电气制造有限公司 | Self-propelled GIL and GIS shell inner chamber cleaning device |
| CN112152095A (en) * | 2020-08-25 | 2020-12-29 | 国网河北省电力有限公司建设公司 | Movable combined dustproof cabinet for GIS combined electrical apparatus and assembling method thereof |
| CN112152095B (en) * | 2020-08-25 | 2022-05-06 | 国网河北省电力有限公司建设公司 | Movable combined dustproof cabinet for GIS combined electrical apparatus and assembling method thereof |
| CN112557247A (en) * | 2020-12-01 | 2021-03-26 | 国网福建省电力有限公司建设分公司 | GIS (gas insulated switchgear) intracavity humidity detection method considering installation environment factors |
| CN113097951A (en) * | 2021-04-01 | 2021-07-09 | 云南送变电工程有限公司 | Method for hoisting vertical expansion joint of lower 500kVGIL pipeline bus |
| CN113097951B (en) * | 2021-04-01 | 2022-05-13 | 云南送变电工程有限公司 | Method for hoisting lower 500kVGIL pipeline bus vertical expansion joint |
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