CN101521365A - Technology for removing ice covering on transmission lines by shock waves - Google Patents
Technology for removing ice covering on transmission lines by shock waves Download PDFInfo
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- CN101521365A CN101521365A CN200810179320A CN200810179320A CN101521365A CN 101521365 A CN101521365 A CN 101521365A CN 200810179320 A CN200810179320 A CN 200810179320A CN 200810179320 A CN200810179320 A CN 200810179320A CN 101521365 A CN101521365 A CN 101521365A
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Abstract
The invention relates to technology for removing ice covering on transmission lines by shock waves, which is mainly used for removing the ice covering on the transmission lines, towers and the like, and belongs to the technical field of explosive charge. The technology ignites an explosive blasting cartridge or a gunpowder blasting cartridge with certain explosive load near the transmission lines and the towers for detonation or deflagration, and the shock waves with certain strength are formed after the detonation of the explosive blasting cartridge or the deflagration of the gunpowder blasting cartridge; due to difference of responses of the brittle ice and the flexible transmission lines to the shock waves, the ice covering on the transmission lines is broken and falls off under the action of the shock waves; therefore, the technology achieves the aim of ice removal. The technology can be applied to remove the ice covering on the transmission lines and the towers with different voltage classes and different heights in various complex terrains, changes the prior method for manually removing the ice covering on the transmission lines and the towers and high energy consumption of de-icing by short circuit current, and greatly improves the efficiency and safety of ice removal work on the transmission lines and the towers to protect the safety of the transmission lines and the towers in ice cover disasters.
Description
Technical field
The present invention relates to a kind of shock wave and remove the ice covering on transmission lines technology, particularly remove the power transmission line of different electric pressures, differing heights and various complex-terrains and the icing on the pylon, belong to the explosive charge technical field.
Background technology
The development of World Economics and technology has brought significant impact to earth environment, ocean and atmosphere, causes global climate to warm gradually.The ice and snow disaster has become one of serious hidden danger that influences the ultra-high-tension power transmission line safe operation.The ice and snow disaster has two aspects to the harm of ultra-high-tension power transmission line, and the one, powerline ice-covering surpasses design standard, can't bear the heavy load to cause broken string and the accident of falling the tower; The 2nd, cause the flashover tripping operation behind the covering ice for insulator.Therefore, can break, fall bar (tower) etc. when powerline ice-covering is serious, thereby cause large area blackout, and accident occurs in severe winter, heavy snow has sealed the mountain passes, and highway freezes, and the repairing difficulty causes long-time power failure.Therefore, the ice and snow disaster is the safe operation of serious threat electrical network, is one of serious threat of being faced of many national grids system.Since the forties in 20th century, the threat of ice and snow disaster is the big technical barrier that electric power system is for more than half a century done one's utmost to tackle always.As seen, strengthen the research of electrical network ice and snow disaster mitigation key technology to ensureing that safe operation of power system has important practical sense.
2008 beginning of the years, freezing disaster weather rarely seen in the history has taken place in provinces such as the Guangdong in zone, China south, Guangxi, Yunnan, Guizhou, transmission line and bar (tower) cause large-area power-cuts because serious icing collapses under pressure, and power infrastructures is seriously damaged.By on February 27th, 2008, low-temperature freezing rain and snow disaster caused south electric network 10kV and 7541 in above circuit to be forced to stop transport, and 859 in 35kV and above transformer station are forced to stop transport, and 10kV and above circuit fall bar (tower) and damage 126247 bases.Freezing sleet disaster has caused the big obstruction of north and south arteria communicans, highway, railway and air transportation are paralysed, more than one hundred million disaster areas population to 19 provinces such as Zhejiang, Jiangsu, Anhui (district, city) has caused a large amount of property losses and other to lose in various degree, and economic loss reaches and exceeds 100 billion.
At present, remove the icing technology on power transmission line and the pylon, mainly contain heating power method, Mechanical Method, passive means etc.The heating power method is the most effective universally acknowledged deicing technology, adopts Joule effect ice-melt principle, utilizes the current flow heats ice coating wire to carry out deicing.But its deicing expense height, DeGrain sometimes, during China's south freezing disaster weather at the beginning of 2008, the heating power method deicing of Hunan Electric Grid was also almost lost efficacy.Mechanical Method is directly to use modes such as scraper, rod, cylinder, cutting machine to carry out deicing, and the energy efficiency scope is between 3%-4%, and efficient is low, and restricted application.Passive means deicing validity is low.Therefore, the work of removing the icing on power transmission line and the pylon at present mainly is manually to carry out.But, take manually to be the method inefficiency of insulator, conducting wire deicing, operating personnel's safety also can't guarantee.
The general energy consumption of existing removal ice covering on transmission lines technology is big, efficient is low, poor stability, does not still have safety, effective, simple method.
Summary of the invention
The objective of the invention is existing to remove that the general energy consumption of ice covering on transmission lines technology is big, efficient is low, the problem of poor stability, and provide a kind of shock wave to remove the ice covering on transmission lines technology in order to solve.
The objective of the invention is to be achieved through the following technical solutions.
A kind of shock wave of the present invention is removed the ice covering on transmission lines technology, is to make it detonation or detonation near the explosive cartridge bag of certain explosive payload or gunpowder cartridge bag are placed on power transmission line and pylon; When forming the shock wave of certain intensity after detonation of explosive cartridge bag or the detonation of gunpowder cartridge bag, utilize the difference of the power transmission line shock wave response of the ice of fragility and toughness, make icing on the power transmission line broken and come off under the shock wave effect, and do not damage power transmission line and reach the purpose of deicing.
The explosive that the present invention selects for use is various commercial explosives, as emulsion, aqueous gels, powdery emulsifying explosive, bulking ammonium nitrate explosive, ammonium nitrate-fuel oil mixture and tnt explosive etc., or retired military explosive, or retired gunpowder, explosive are blended into the modification explosive that forms in the commercial explosive, or the explosive that makes into of pyrotechnic composition;
The gunpowder that the present invention selects for use is various gunpowder, as black powder, single-base powder, double-base powder, nitrocotton and improvement prescription gunpowder thereof, and the product after retired propellant powder, solid propellant and the pulverizing thereof;
The detonation rate of the explosive that the present invention selects for use and the detonation velocity of gunpowder are 500-7000m/s, and the explosive payload of its single cartridge bag is that 50g is to 2000g;
Explosive cartridge bag that the present invention selects for use or gunpowder cartridging mode are modes such as perfusion, cast, extruding, mold pressing, and its material and shape are wrapper, plastics package, metal forming packing and bag shape packing, tubular packing, tubular wrapping;
Explosive cartridge bag that the present invention selects for use or gunpowder cartridge bag sparking mode are electric ignition or gunpowder sth. made by twisting, delay powder, booster explosive or explosive rope ignition and detonation, or blasting cap initiation; Detonation mode is regularly, remote-controlled detonation, or twists with the fingers direct initiation with connecting lead or gunpowder;
The emitter that the present invention selects for use is launching tube, ejecting gun of simple and easy launching tube, large, medium and small single tube or multitube etc.;
When the present invention is applied to removing ice of power transmission line, near explosive cartridge bag or gunpowder cartridge bag are positioned at power transmission line and pylon detonate in the fixed position, or be transmitted near power transmission line and the pylon explosive cartridge bag or gunpowder cartridge bag or peripheral initiation by emitter, distance apart from power transmission line and pylon when explosive cartridge bag or gunpowder cartridge bag use is 0.5-30m, can be as required, single explosive cartridge bag or gunpowder cartridge bag are detonated or a plurality of cartridge bag detonates simultaneously.
Beneficial effect
1) shock wave removal ice covering on transmission lines technology of the present invention can be used to remove the power transmission line of different electric pressures, differing heights and various complex-terrains and the icing on the pylon, and the type of icing is that A type glaze, Type B mix rime, C type soft rime, D type bloom, E type snow and mist etc.
2) shock wave of the present invention is removed the ice covering on transmission lines technology and can be substituted artificial deicing, avoids the danger of deicing manually;
3) shock wave of the present invention is removed in the icing of ice covering on transmission lines technology on removing power transmission line and pylon, guarantees the safety of various power transmission facilities in the equipment such as power transmission line and pylon;
4) shock wave of the present invention is removed the efficient that the ice covering on transmission lines technology can greatly improve de-icing work on power transmission line and the pylon, makes power transmission line and pylon obtain safety.
Embodiment
Embodiment 1
It is the emulsion of 4000m/s that the explosive cartridge bag adopts explosion velocity, explosive payload is 500g, cartridge bag is a paper tube, inserts No. 8 electric caps in the cartridge bag, and cartridge bag places the below that is covered with the 50kV power transmission line that mixes rime, cartridge bag is apart from power transmission line 10m, directly be wired to place, switch on to detonator with battery and detonate, the mixing rime deicing on the power transmission line apart from cartridge bag 100m, the deicing effect is 50%, and power transmission line is not had any destruction.
Embodiment 2
It is the emulsion of 6000m/s that the explosive cartridge bag adopts explosion velocity, and explosive payload is 500g, and cartridge bag is a plastic tube, and the plastic tube bottom installs remote initiation device and release mechanism additional, comprehensively is called fixed pinking pencil.The pinking pencil places and has the 50kV power transmission line below of mixing river in Jiangsu Province which flows into the Huangpu River of Shanghai icing, and pencil, detonates at 200m external application remote controller after the installation apart from power transmission line 20m, and the deicing effect is 40%, and power transmission line is not had any destruction.
Embodiment 3
It is the gunpowder modified model explosive formulation of 3000m/s that the explosive cartridge bag adopts explosion velocity, explosive payload is 400g, cartridge bag adopts the plastic tube charging means, detonate and adopt delay powder ignition and detonation mode, below plastic tube, install the emission propulsive mechanism additional, be called emission type pinking pencil, with the emission of simple glass steel transmitting tube.Be transmitted into the scope that distance is covered with the 50kV power transmission line 3m that mixes rime, cartridge bag detonates, and the deicing effect is 60%, and power transmission line is not had any destruction.
Embodiment 4
Cartridge bag is a gunpowder modified model prescription, explosive payload is 200g, cartridge bag adopts the paper tube charging means, is contained in the paper tube of setting off fireworks, and lights fuse, cartridge bag is transmitted into the scope that distance is covered with the 50kV power transmission line 1m of soft rime, cartridge bag detonates, and by gunpowder detonation vibrations, removes rime fully, effect is 50%, and power transmission line is not had any destruction.
Claims (4)
1. a shock wave is removed the ice covering on transmission lines technology, is mainly used in the icing of removing on power transmission line and the pylon, it is characterized in that: make it detonation or detonation near the explosive cartridge bag of certain explosive payload or gunpowder cartridge bag are placed on power transmission line and pylon; When forming the shock wave of certain intensity after detonation of explosive cartridge bag or the detonation of gunpowder cartridge bag, utilize the difference of the power transmission line shock wave response of the ice of fragility and toughness, make icing on the power transmission line broken and come off under the shock wave effect, reach the purpose of deicing.
2. remove the ice covering on transmission lines technology according to a kind of shock wave described in the right 1, it is characterized in that: described shock wave is produced by explosive detonation and gunpowder detonation, comprises explosive detonation shock wave and gunpowder detonation shock wave;
Described explosive is various commercial explosives, comprise emulsion, aqueous gels, powdery emulsifying explosive, bulking ammonium nitrate explosive, ammonium nitrate-fuel oil mixture and tnt explosive, or retired military explosive, or retired explosive, solid propellant, gunpowder are blended into the modification explosive that forms in the commercial explosive, or the improved explosive of pyrotechnic composition;
Described gunpowder is various gunpowder, comprises black powder, single-base powder, double-base powder, nitrocotton and improvement prescription gunpowder thereof, and the product after retired propellant powder, solid propellant and the pulverizing thereof;
Described explosive cartridge bag or gunpowder cartridge bag sparking mode comprise electric ignition or gunpowder sth. made by twisting, delay powder, booster explosive or explosive rope ignition and detonation, or blasting cap initiation;
Described explosive cartridge bag or gunpowder cartridge bag detonation mode comprise regularly, remote-controlled detonation, or twist with the fingers direct initiation with connecting lead or gunpowder;
Described emitter comprises simple and easy launching tube, large, medium and small single tube or launching tube, the ejecting gun of multitube;
Described power transmission line is the power transmission line and the pylon of different electric pressures, differing heights and various complex-terrains with pylon.
3. remove the ice covering on transmission lines technology according to a kind of shock wave described in right 1 or 2, it is characterized in that:
The detonation velocity scope of the detonation rate of described explosive and gunpowder is 500-7000m/s;
The single drug package dose of described explosive cartridge bag or gunpowder cartridge bag is that 50g is to 2000g;
Described explosive cartridge bag or gunpowder cartridging mode comprise modes such as perfusion, cast, extruding, mold pressing;
The material of described explosive cartridge bag or gunpowder cartridge bag comprises wrapper, plastics package, metal forming packing;
The shape of described explosive cartridge bag or gunpowder cartridge bag comprises a bag shape packing, tubular packing, tubular wrapping;
Distance apart from power transmission line and pylon when described explosive cartridge bag or gunpowder cartridge bag use is 0.5-30m.
4. remove the ice covering on transmission lines technology according to a kind of shock wave described in right 1,2 or 3, it is characterized in that:
When being applied to removing ice of power transmission line, near explosive cartridge bag or gunpowder cartridge bag are positioned at power transmission line and pylon detonate in the fixed position;
When being applied to removing ice of power transmission line, explosive cartridge bag or gunpowder cartridge bag are transmitted near power transmission line and the pylon or peripheral initiation by emitter;
When being applied to removing ice of power transmission line, can be that single explosive cartridge bag or gunpowder cartridge bag detonate or a plurality of cartridge bag detonates simultaneously;
When being applied to removing ice of power transmission line, the type of icing comprises that A type glaze, Type B mix rime, C type soft rime, D type bloom, E type snow and mist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101793202A CN101521365B (en) | 2008-11-28 | 2008-11-28 | Technology for removing ice covering on transmission lines by shock waves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101793202A CN101521365B (en) | 2008-11-28 | 2008-11-28 | Technology for removing ice covering on transmission lines by shock waves |
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| Publication Number | Publication Date |
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| CN101521365A true CN101521365A (en) | 2009-09-02 |
| CN101521365B CN101521365B (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101793202A Expired - Fee Related CN101521365B (en) | 2008-11-28 | 2008-11-28 | Technology for removing ice covering on transmission lines by shock waves |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986092A (en) * | 2010-01-27 | 2011-03-16 | 北京理工大学 | Emission detonation cartridge for removing ice on power transmission line |
| CN102011382A (en) * | 2010-10-25 | 2011-04-13 | 中国人民解放军总参谋部工程兵科研三所 | Energy-gathering followup icebreaker and ice breaking method |
| CN106253137A (en) * | 2016-08-29 | 2016-12-21 | 国网山西省电力公司电力科学研究院 | A kind of overhead transmission line lead wire and earth wire explosion de-icing method of linear charge |
| CN111525446A (en) * | 2020-06-03 | 2020-08-11 | 东北大学 | Deicing method for icing power transmission line by combining short-circuit current and impact load |
| CN114389223A (en) * | 2021-12-10 | 2022-04-22 | 国网浙江省电力有限公司金华供电公司 | Intelligent deicing system and method for overhead transmission line |
| CN115065021A (en) * | 2022-06-29 | 2022-09-16 | 云南电网有限责任公司电力科学研究院 | Overhead line deicing device based on metal wire electric explosion |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1195461A (en) * | 1968-01-01 | 1970-06-17 | Ici Ltd | Blasting Method and Devices therefor |
| CN1083919A (en) * | 1992-09-05 | 1994-03-16 | 锦西水泥厂 | Method of small-delaying large-area demolition job without electric detonating |
| CN2222340Y (en) * | 1995-06-15 | 1996-03-13 | 北京矿冶研究总院 | Safe type high energy rock breaking device |
| CN100462664C (en) * | 2002-07-18 | 2009-02-18 | 许祖岳 | Explosion method |
-
2008
- 2008-11-28 CN CN2008101793202A patent/CN101521365B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986092A (en) * | 2010-01-27 | 2011-03-16 | 北京理工大学 | Emission detonation cartridge for removing ice on power transmission line |
| CN101986092B (en) * | 2010-01-27 | 2013-04-10 | 北京理工大学 | Emission detonation cartridge for removing ice on power transmission line |
| CN102011382A (en) * | 2010-10-25 | 2011-04-13 | 中国人民解放军总参谋部工程兵科研三所 | Energy-gathering followup icebreaker and ice breaking method |
| CN102011382B (en) * | 2010-10-25 | 2012-09-26 | 中国人民解放军总参谋部工程兵科研三所 | Energy-gathering followup icebreaker and ice breaking method |
| CN106253137A (en) * | 2016-08-29 | 2016-12-21 | 国网山西省电力公司电力科学研究院 | A kind of overhead transmission line lead wire and earth wire explosion de-icing method of linear charge |
| CN106253137B (en) * | 2016-08-29 | 2017-11-07 | 国网山西省电力公司电力科学研究院 | A kind of overhead transmission line ground wire explosion de-icing method of linear charge |
| CN111525446A (en) * | 2020-06-03 | 2020-08-11 | 东北大学 | Deicing method for icing power transmission line by combining short-circuit current and impact load |
| CN111525446B (en) * | 2020-06-03 | 2022-02-01 | 东北大学 | Deicing method for icing power transmission line by combining short-circuit current and impact load |
| CN114389223A (en) * | 2021-12-10 | 2022-04-22 | 国网浙江省电力有限公司金华供电公司 | Intelligent deicing system and method for overhead transmission line |
| CN114389223B (en) * | 2021-12-10 | 2023-10-20 | 国网浙江省电力有限公司金华供电公司 | Intelligent deicing system and method for overhead transmission line |
| CN115065021A (en) * | 2022-06-29 | 2022-09-16 | 云南电网有限责任公司电力科学研究院 | Overhead line deicing device based on metal wire electric explosion |
| CN115065021B (en) * | 2022-06-29 | 2023-07-14 | 云南电网有限责任公司电力科学研究院 | Overhead line deicing device based on wire electric explosion |
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| CN101521365B (en) | 2011-01-26 |
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Granted publication date: 20110126 Termination date: 20111128 |