CN103683058B - A kind of adjustment control method under outdoor GIS and GIL equipment special climate - Google Patents
A kind of adjustment control method under outdoor GIS and GIL equipment special climate Download PDFInfo
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- CN103683058B CN103683058B CN201310703448.5A CN201310703448A CN103683058B CN 103683058 B CN103683058 B CN 103683058B CN 201310703448 A CN201310703448 A CN 201310703448A CN 103683058 B CN103683058 B CN 103683058B
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Abstract
The invention discloses a kind of adjustment control method under outdoor GIS and GIL equipment special climate, it comprises the following steps: step 1, air chamber are installed, described air chamber is the closed cavity surrounded by Part I and Part II, described Part I and Part II realize refuting connecing by the two corresponding first flange above arranged and the second flange, and are respectively equipped with corresponding 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.The invention provides the series of measures of the Installation and Debugging quality control under outdoor GIS and GIL equipment special climate, it systematically prepares before the construction organization of GIS and GIL rigging up and debugging, installation environment, installation and mounting process requires that researching and analysing outdoor GIS and the GIL rigging up and debugging Key Points of Quality Control of 500kV is carried out in these 4 aspects, and formulate corresponding control measure, avoid the generation of potential safety hazard.
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 a kind of 500kV outdoor GIS 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, its application at home in electric power system is also more and more extensive, 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 500kVGIS and GIL equipment is not within minority, and most fault causes 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, tremendous economic is caused to lose 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 lacks further investigation to gas-insulated metal-enclosed rigging up and debugging Key Points of Quality Control, do not launch research for gas-insulated metal-enclosed rigging up and debugging mass-dispersion sex chromosome mosaicism, 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 accurate assurance to gas-insulated metal-enclosed rigging up and debugging quality in the check stage, these leave 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 before the construction organization of GIS and GIL rigging up and debugging, installation environment, installation and mounting process requires that these 4 aspects are carried out and formulates corresponding control measure to 500kV outdoor GIS and GIL rigging up and debugging Key Points of Quality Control.
For realizing above object, the technical scheme that this invention takes is:
An adjustment control method under outdoor GIS and GIL equipment special climate, it comprises following two steps:
Step 1, air chamber are installed, described air chamber is the closed cavity surrounded by Part I and Part II, described Part I and Part II realize refuting connecing by the two corresponding first flange above arranged and the second flange, and are respectively equipped with corresponding 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, bottom the first seal groove and the second seal groove, angle is in the outer part coated with one deck silicone grease respectively;
Step 12, even floating described silicone grease, make described angle is all covered with 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, clean with washes of absolute alcohol, then they are pressed into uniformly respectively in the first seal groove and the second seal groove near outside region;
Step 14, be coated with one deck silicone grease in the contact position at an O shape seal gasket and the first seal groove top in the outer part, be coated with one deck silicone grease the contact position at the 2nd O shape seal gasket and the second seal groove top is in the outer part same, then with round brush, silicone grease is evenly floating, and guarantee that silicone grease does not enter in air chamber;
Step 15, on an O shape seal gasket and the 2nd O shape seal gasket to first flange and the second flange face at respective external edge, be evenly coated with one deck silicone grease, and guarantee that silicone grease does not enter in air chamber;
Step 16, confirmation Part I and Part II are inner can be realized refuting connecing by the docking of the first flange and the second flange by Part I and Part II without any foreign matter;
Step 17, the first flange and the second flange joint encapsulation process, inject enough silicone grease by the closed oil nozzle at flange sealing groove place, make the space between two flanges and seal gasket be full of silicone grease;
Step 18, process is vacuumized to air chamber, observe the reading of a vacuum meter every 10min in vacuum, when monitoring that vacuum meter reading reaches 133.3Pa, continue to vacuumize 30min, stop 4h and be not less than 133.3Pa, then the operation of step 2 can be carried out after taking out 2h, otherwise, then re-start encapsulation process, again vacuumize observation;
Step 19, inflated 8h after, adopt partial binding method 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 connection ne-leakage;
Step 22, according to the requirement of electric device installing engineering commissioning test standard GB50150-2006 by random samples purity is inspected to SF6 gas sample 10%, can use after qualified; Micro-water project then will be examined entirely, guarantees that the gas injecting air chamber is acceptable gas;
Step 23, in strict accordance with the operation requiring to carry out vacuumizing gas injection.
Carry out in the 1h that the refuting of step 16 connects the painting one deck sealing silicone grease operated in described in step 11-15.
When being coated with sealing silicone grease, it must not be made to flow into inside an O shape seal gasket, the 2nd O shape seal gasket to prevent sealed silicon fat from contacting with SF6 gas.
The indoor being docked at moistureproof tent or cleaning of described first flange and the second flange are carried out.
In the middle of the paulin top of described moistureproof tent, backing is to prevent rainy day ponding, installs an infrared ray and drive damp lamp in moistureproof tent.
In described moistureproof tent, hygrometer is installed, with the humidity in the moistureproof tent of Real-Time Monitoring, and in moistureproof tent, blows dry air at the side dry air generator of moistureproof tent.
Described moistureproof tent floor laying floor leather is so that clean.
The inside illumination of described moistureproof tent is greater than 75LX.
Described moistureproof tent band two sealing water sleeves, the junction of shake sleeve and moistureproof tent seals, and described shake sleeve length is 2 ~ 3 meters.
The four sides of moistureproof tent removably connects, and installs or docking, carry out temporary sealing at moistureproof tent mouth VELCRO or magnetic stripe so that equipment enters in moistureproof tent.
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 before the construction organization of GIS and GIL rigging up and debugging, installation environment, installation and mounting process requires that researching and analysing outdoor GIS and the GIL rigging up and debugging Key Points of Quality Control of 500kV is carried out in these 4 aspects, and formulate corresponding control measure, avoid 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 GIL equipment vertical air docking;
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
Present embodiments provide the series of measures of the Installation and Debugging quality control under outdoor GIS and GIL equipment special climate.Systematically to prepare before the construction organization of GIS and GIL rigging up and debugging, installation environment, installation and mounting process requires that researching and analysing outdoor GIS and the GIL rigging up and debugging Key Points of Quality Control of 500kV is carried out in these 4 aspects, and formulate corresponding control measure.
Present embodiment illustrates the series of measures of the Installation and Debugging quality control under outdoor GIS and GIL equipment special climate, it comprises in-site installation environmental Kuznets Curves measure under special climate, sealing control measure installed by air chamber, inner cleanliness factor control measure are installed, SF6 gas and Pureness control measure are installed.
One, organiztion measure:
1) moistureproof tent has rainproof, windproof, dust reduction capability, can tolerate strong breeze.
2) moistureproof tent floor must be removed from office by laying floor, is convenient to clean.
3) two power supply disks with alternating current 220V, 380V plug are equipped with in moistureproof tent
4) used tool palpus record is installed, checks again after hours, prevent from being retained in air chamber.
5) air chamber is installed and must be completed by special designated person, must wearing cap, mouth mask, wearing without buckleing coverall during operation.
6), during the docking of equipment vertical air, a staff is set outside moistureproof tent and is responsible for carrying out crane commander work specially.
Two, installation environment, prepare before installation and the technical measures of mounting process
1, installation environment control method
Please refer to shown in Fig. 1, measure moistureproof, dust-proof when damp proofing of ground tent is the docking of GIS parts ground.Moistureproof tent is converted by the moistureproof tent of the 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 drives damp lamp, and in moistureproof tent, blow dry air at the side dry air generator of moistureproof tent.
1) humidity of moistureproof tent can control to be no more than 80%(and install hygrometer), can dry air generator be used when humidity is excessive, 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 normal daytime illumination is enough.
3) four sides of moistureproof tent can movable or dismounting, installs or docking, should carry out temporary sealing at moistureproof tent mouth with VELCRO or magnetic stripe so that equipment enters in moistureproof tent.
4) special shake sleeve is used in the sealing of two, moistureproof tent band, and the necessary good seal in junction of shake sleeve and moistureproof tent, shake sleeve length is 2 ~ 3 meters.
5) should first installation foot hand cradle when equipment carries out vertical air docking, mounted scaffold should place a small-sized moistureproof tent, and can hold three staff and carry out work.
2, sealing control method installed by air chamber
Air chamber installation is docked two kinds of forms by vertical butt joint or level and is carried out, and 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 all more must renew packing ring before docking.Before more renewing packing ring, check that " O " shape seal groove and flange surface are with or without indentation, gravure, dirt etc., before painting fluid sealant, cleaned up with solvent, and fully dry.When being coated with fluid sealant, it must not be made to flow into sealing gasket (circle) inner side and contact with SF6 gas.
1) the sealing silicone grease used should possess good waterproof, antiseptic property, first should open a little angle at adapter mouth, be then connected on sealed rubber pipe by adapter mouth before using.
2) angle in the outer part at the bottom of seal groove is coated with one deck sealing silicone grease, by sealing silicone grease can not be scribbled inside gas, should notices that sealing silicone grease must not use with the solvent of other any models.
3) even floating sealing silicone grease face, makes the angle in the outer portion of bottom land is all covered with sealing silicone grease.
4) check whether special " O " shape seal gasket has damage and dirt, clean with washes of absolute alcohol, then it is put into groove near outside region.
5) in the outer part at " O " shape seal gasket and seal groove be coated with one deck and seal silicone grease in the contact position at top, with hand, silicone grease face is evenly floating.
6) on " O " shape seal gasket to the flange face of external margin, be evenly coated with one deck and be about the thick sealing silicone grease of 1mm, notice that the connection of flange must complete in the 1h after gluing.Unnecessary should be cleaned out after connection.
7) confirm that element internal can carry out refuting connecing without any foreign matter, the moment values that the connection of parts bolt should provide by producer is carried out fastening.
8) observe the reading of a vacuum meter in vacuum every 10min, when monitoring that vacuum meter reading reaches 133.3Pa, continue to vacuumize 30min, stop 4h and be not less than 133.3Pa, more inflatable after taking out 2h.If stop 4h lower than 133.3Pa, need encapsulation process be re-started, again vacuumize observation.As vacuum pump stops suddenly in vacuum, associated valve should be closed immediately, and inspection determines whether the air of vacuum pump is back to sebific duct or SF6 air seal room.
9), after having inflated 8h, partial binding method is adopted to carry out gas leak detection.Docking ports (comprising density monitor, inflation inlet, earthed switch shaft seal, ground wire capping, power cable connector etc.) all for GIS is wrapped up tight with transparent plastic cloth and adhesive tape.Quantitatively detect after wrapping 24h, 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 without dust storm, sleet, and relative air humidity carries out under being less than the condition of 80%, and the cleaning agent of use, sealing silicone grease and Wiping material meet product technology regulation.
2) in the indoor of cleaning or moistureproof tent, carry out cleaning inside and flange docking.
3) the housing Polypropylence Sheet wrapping protection of having cleared up.
4) personnel carrying out final assembling must keep both hands and clothing without spot and grit.
5) when processing plenum interior, disposable glove should be used to guarantee cleanliness factor.
6), in the process of uncap at air chamber, clear up, docking, civil engineering, welding, mechanical grinding etc. near operation area, should be avoided to cause the operation of dust.
7) plenum interior operation complete close before, clear up with dust catcher, in case the tiny foreign material such as hair, dust are stayed in air chamber.
4, SF6 gas and Pureness control method are installed
1) first guaranteeing that producer transports to on-the-spot SF6 is acceptable gas, requires that producer provides the documentary evidence of purity and micro-hydration lattice.
2) according to the requirement of electric device installing engineering commissioning test standard GB50150-2006 by random samples purity is inspected to new gas sampling 10%, can use after qualified.Micro-water project then will be examined entirely, guarantees that the gas injecting air chamber is acceptable gas.
3), before SF6 gas charge, charger and pipeline be clean, without moisture, without greasy dirt, pipeline connection ne-leakage.
4) in strict accordance with the operation requiring to carry out vacuumizing gas injection.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and this embodiment is also not used 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 changed, and all should be contained in the scope of the claims of this case.
Claims (7)
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, described air chamber is the closed cavity surrounded by Part I and Part II, described Part I and Part II realize refuting connecing by the two corresponding first flange above arranged and the second flange, and are respectively equipped with corresponding 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, bottom the first seal groove and the second seal groove, angle is in the outer part coated with one deck silicone grease respectively;
Step 12, even floating described silicone grease, make described angle is all covered with 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, clean with washes of absolute alcohol, then they are pressed into uniformly respectively in the first seal groove and the second seal groove near outside region;
Step 14, be coated with one deck silicone grease in the contact position at an O shape seal gasket and the first seal groove top in the outer part, be coated with one deck silicone grease the contact position at the 2nd O shape seal gasket and the second seal groove top is in the outer part same, then with round brush, silicone grease is evenly floating, and guarantee that silicone grease does not enter in air chamber;
Step 15, on an O shape seal gasket and the 2nd O shape seal gasket to first flange and the second flange face at respective external edge, be evenly coated with one deck silicone grease, and guarantee that silicone grease does not enter in air chamber;
Step 16, confirmation Part I and Part II are inner can be realized refuting connecing by the docking of the first flange and the second flange by Part I and Part II without any foreign matter;
Step 17, the first flange and the second flange joint encapsulation process, inject enough silicone grease by the closed oil nozzle at the first seal groove and the second seal groove place, make the space between two flanges and seal gasket be full of silicone grease;
Step 18, process is vacuumized to air chamber, observe the reading of a vacuum meter every 10min in vacuum, when monitoring that vacuum meter reading reaches 133.3Pa, continue to vacuumize 30min, stop 4h and be not less than 133.3Pa, then the operation of step 2 can be carried out after taking out 2h, otherwise, then re-start encapsulation process, again vacuumize observation;
Step 19, inflated 8h after, adopt partial binding method 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 connection ne-leakage;
Step 22, according to the requirement of electric device installing engineering commissioning test standard GB50150-2006 by random samples purity is inspected to SF6 gas sample 10%, can use after qualified; Micro-water project then will be examined entirely, guarantees that the gas injecting air chamber is acceptable gas;
Step 23, in strict accordance with the operation requiring to carry out vacuumizing gas injection;
The indoor being docked at moistureproof tent or cleaning of described first flange and the second flange are carried out; In the middle of the paulin top of described moistureproof tent, backing is to prevent rainy day ponding, installs an infrared ray and drive damp lamp in moistureproof tent; In described moistureproof tent, hygrometer is installed, with the humidity in the moistureproof tent of Real-Time Monitoring, and in moistureproof tent, blows dry air at the side dry air generator of moistureproof tent.
2. the adjustment control method under outdoor GIS and GIL equipment special climate according to claim 1, is characterized in that, carries out in the 1h that the refuting of step 16 connects the painting one deck silicone grease operated in described in step 11-15.
3. the adjustment control method under outdoor GIS and GIL equipment special climate according to claim 2, it is characterized in that, when being coated with sealing silicone grease, it must not be made to flow into inside an O shape seal gasket, the 2nd O shape seal gasket to prevent sealed silicon fat from contacting with SF6 gas.
4. the adjustment control method under outdoor GIS and GIL equipment special climate according to claim 1, is characterized in that, described moistureproof tent floor laying floor leather is so that clean.
5. the adjustment control method under outdoor GIS and GIL equipment special climate according to claim 1, it is characterized in that, the inside illumination of described moistureproof tent is greater than 75LX.
6. the adjustment control method under outdoor GIS and GIL equipment special climate according to claim 1, is characterized in that, described moistureproof tent band two sealing water sleeves, the junction of shake sleeve and moistureproof tent seals, and described shake sleeve length is 2 ~ 3 meters.
7. the adjustment control method under outdoor GIS and GIL equipment special climate according to claim 1, it is characterized in that, the four sides of moistureproof tent removably connects, and installs or docking, carry out temporary sealing at moistureproof tent mouth VELCRO or magnetic stripe so that equipment enters in moistureproof tent.
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| CN201310703448.5A CN103683058B (en) | 2013-12-19 | 2013-12-19 | A kind of adjustment control method under outdoor GIS and GIL equipment special climate |
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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 |
| CN110797791B (en) * | 2019-11-04 | 2021-01-26 | 云南送变电工程有限公司 | Method for overhauling lower 500kVGIL tubular bus without accompanying shutdown |
| CN111203416A (en) * | 2019-12-30 | 2020-05-29 | 江苏恒高电气制造有限公司 | Be used for self-propelled GIL, GIS casing inner chamber belt cleaning device |
| 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 |
| 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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| JP2000102123A (en) * | 1998-09-25 | 2000-04-07 | Mitsubishi Electric Corp | Condensable gas recovering device |
| CN1650495A (en) * | 2002-12-16 | 2005-08-03 | 三菱电机株式会社 | Insulation bus system and its connecting method of bus unit |
| JP4596531B2 (en) * | 2005-03-11 | 2010-12-08 | 財団法人電力中央研究所 | Gas insulated power equipment and abnormality detection method thereof |
| CN202602131U (en) * | 2012-04-27 | 2012-12-12 | 西安供电局 | Device for realizing butt joint between GIS equipment in different specifications |
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Patent Citations (4)
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| JP2000102123A (en) * | 1998-09-25 | 2000-04-07 | Mitsubishi Electric Corp | Condensable gas recovering device |
| CN1650495A (en) * | 2002-12-16 | 2005-08-03 | 三菱电机株式会社 | Insulation bus system and its connecting method of bus unit |
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