CN106390337B - Pipe network explosion-proof device of main transformer explosion fire extinguishing system - Google Patents
Pipe network explosion-proof device of main transformer explosion fire extinguishing system Download PDFInfo
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- CN106390337B CN106390337B CN201610914641.7A CN201610914641A CN106390337B CN 106390337 B CN106390337 B CN 106390337B CN 201610914641 A CN201610914641 A CN 201610914641A CN 106390337 B CN106390337 B CN 106390337B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/009—Methods or equipment not provided for in groups A62C99/0009 - A62C99/0081
Abstract
A main transformer explosion fire extinguishing system pipe network explosion-proof device comprises two structures, namely a side sleeve explosion fire extinguishing system pipe network explosion-proof device and a top sleeve explosion fire extinguishing system pipe network explosion-proof device; wherein: the pipe network explosion-proof device structure of the side casing explosion fire-extinguishing system is composed of a long upright post (A1), an explosion-proof beam (A2), an explosion-proof support (A3) and an explosion-proof steel net (A4). The pipe network explosion-proof device structure of the top sleeve explosion fire extinguishing system is composed of long upright posts (B1), explosion-proof cross beams (B2) fixed on the long upright posts (B1) and explosion-proof supports (B3) arranged among the explosion-proof cross beams (B2). The invention has the beneficial effects that: this explosion-proof equipment is the essential safeguard of transformer serious explosion fire extinguishing systems pipe network, and protection transformer extinguishing systems pipe network that can furthest avoids receiving the transformer explosion influence, prevents that explosion parts such as transformer bushing, rising seat and flange from to electric equipment injury even personnel in extinguishing systems pipe network, the explosion direction.
Description
Technical Field
The invention belongs to a fire-fighting facility of a transformer substation, and particularly relates to a setting technology of a pipe network explosion-proof device of a main transformer oil explosion fire-fighting system.
Background
For a long time, the fire protection design of the main transformers of the core equipment of the transformer substation mainly focuses on the arrangement and matching of planes among all the main transformers to arrange a fire protection wall so as to meet the fire protection distance requirement specified by fire protection standards, a transformer oil pool is arranged in the range of 10-1.5 m of the appearance of the transformer, transformer oil is discharged when a fire disaster occurs, and meanwhile, fire extinguishing systems such as water spray, foam spray, dry powder and nitrogen injection are arranged outside the body of the transformer to extinguish the fire.
58 minutes in 1978, 10 months, 4 days and 2 minutes, a 12 ten thousand volt-ampere transformer of a power plant in the area of Zhenjiang in Jiangsu province has serious fire and explosion accidents, and a large amount of transformer oil is sprayed out of a surrounding oil pool, so that 3 persons die and 12 persons are injured by workers under maintenance, and 80 ten thousand yuan of property loss is caused; in 2009, 25 days, early morning at 5 points, in 500kV home-laid substation 1# main transformer A phase in Wuhan mountainous area generates medium explosion fire, transformer oil is sprayed to the vicinity of an oil pool to cause large-area fire, and a fire brigade adopts 6 water guns to extinguish the fire at 7 points and 18 minutes; 17 o 16 m at 19 h 5 month in 2010, causing a top high-voltage bushing middle-pressure explosion fire by a 500kV transformer substation near a B plant of a Guangxi guest power plant, raising a flame by about 20 m, spraying transformer oil to a transformer oil pool at one side of the bushing to cause a large-area fire, wherein a fire extinguishing system fails every year, 18 o 06 o, a nearby fire fighting team fire truck arrives at the site, 19 o 16 o' clock passes through the fire fighting team to extinguish the fire for about 1 hour, and the fire is successfully extinguished; in 22 days 7 months in 2015, a high-voltage sleeve and a lifting seat of a 500kV transformer substation 1# main transformer A phase 250MVA transformer explode to cause the high-voltage sleeve and the lifting seat of the transformer to be completely exploded, the exploded transformer parts simultaneously destroy a pipe network of a transformer water spray fire extinguishing system to cause the water spray fire extinguishing system to be invalid, a large amount of transformer oil is sprayed out from the joint of the high-voltage sleeve lifting seat and the transformer body, wherein about 60 percent of the transformer oil accounting for the total oil quantity of the single-phase transformer is discharged to a total accident oil tank along an accident oil discharge system, about 20 percent of the transformer oil is sprayed onto adjacent (a 1# main transformer B phase and a 2# main transformer C phase) transformer, a main transformer site, a main transformer firewall, a main cable trench, a 500kV power distribution device site and a main transformer transportation road, and the rest about 20 percent of the transformer oil is remained in the transformer body, and the temperature of the sprayed out transformer oil is far higher than the spontaneous ignition temperature, after encountering air, large-area transformer oil spreading fire, continuous fire and reburning fire are formed in the transformer oil splashing range. The transformer time of being on fire 22 days early morning 1 o 22 minutes, 2 o 'clock fire brigade reachs the scene of a fire of transformer substation, 2 o 25 minutes transformer substation load transfer finishes, 1#, 2# main transformer is whole to get into cold reserve, the fire brigade begins to put out a fire, 2 o 55 minutes, transformer and the scene open fire around put out, 5 o' clock all conflagrations put out in the morning, afterwards, conflagration transformer oil burns completely basically, after the fire brigade adopted the fire engine water fire control, a small amount of transformer oil is arranged outside the station through road and place drainage system, cause the surrounding environment pollution.
It can be seen from the above fire case that when the transformer has a moderate explosion fire, the transformer bushing and the bushing lifting seat only have burst oil injection, and when a serious explosion fire occurs, the transformer bushing and the bushing lifting seat and other parts are all blown away by the explosion to destroy the fire extinguishing system pipe network, so that the fire extinguishing system is disabled, and therefore, in order to ensure the normal use of the transformer fire extinguishing system, a perfect transformer explosion fire extinguishing system pipe network explosion-proof device is necessary to be arranged.
Disclosure of Invention
The invention aims to provide an explosion-proof device of a main transformer explosion fire extinguishing system in a transformer substation, which prevents the failure of the fire extinguishing system caused by the fact that a fire extinguishing system pipe network is broken down by transformer explosion parts such as a transformer sleeve, a lifting seat and a flange. .
The technical scheme of the invention is as follows:
through the analysis of the external weak part structure of the transformer and the serious explosion influence of the transformer, the defect of the fire extinguishing system pipe network of the transformer in the serious explosion fire of the transformer is mastered, an explosion-proof device is arranged on the fire extinguishing system pipe network which is possibly affected by the serious explosion fire of the transformer, the feasibility of the explosion-proof devices in two forms is verified through the explosion fire test, the composition structure of the explosion-proof device is improved, and the explosion-proof requirement of the fire extinguishing system pipe network is met
A main transformer explosion fire extinguishing system pipe network explosion-proof device is characterized by comprising two structures, namely a side sleeve explosion fire extinguishing system pipe network explosion-proof device and a top sleeve explosion fire extinguishing system pipe network explosion-proof device; wherein:
the pipe network explosion-proof device of the side casing explosion fire extinguishing system has the following structure: the anti-explosion steel net is composed of long upright posts, anti-explosion cross beams fixed on the long upright posts, anti-explosion supports arranged between the anti-explosion cross beams, and anti-explosion steel nets between the anti-explosion cross beams and the anti-explosion supports.
The pipe network explosion-proof device of the top casing explosion fire extinguishing system has the following structure: the anti-explosion support consists of long upright posts, anti-explosion cross beams fixed on the long upright posts and anti-explosion supports arranged among the anti-explosion cross beams.
The difference of the pipe network explosion-proof device of the top sleeve explosion and side sleeve explosion fire extinguishing system is as follows: the pipe network explosion-proof device of the top sleeve explosion fire extinguishing system is an explosion-proof structure consisting of a long upright post, an explosion-proof beam and an explosion-proof support; the pipe network explosion-proof device of the side sleeve explosion fire extinguishing system considers the explosion of the maintenance flange on the sleeve lifting seat and is provided with an explosion-proof structure consisting of a long upright post, an explosion-proof beam, an explosion-proof support and an explosion-proof steel mesh.
The invention has the beneficial effects that: this explosion-proof equipment is the essential safeguard of transformer serious explosion fire extinguishing systems pipe network, and protection transformer extinguishing systems pipe network that can furthest avoids receiving the transformer explosion influence, prevents that explosion parts such as transformer bushing, rising seat and flange from to electric equipment injury even personnel in extinguishing systems pipe network, the explosion direction.
Drawings
FIG. 1 is a schematic plan view of the arrangement of the present invention;
FIG. 2 is a schematic structural view of a pipe network explosion-proof device of the side casing explosion fire extinguishing system of the invention;
fig. 3 is a schematic structural view of a pipe network explosion-proof device of the top casing explosion fire extinguishing system.
Detailed Description
The invention further discloses a main transformer explosion fire extinguishing system pipe network explosion-proof device with the following figures.
Referring to fig. 1, the invention discloses a main transformer explosion fire extinguishing system pipe network explosion-proof device, which is characterized by comprising two structures, namely a side sleeve explosion fire extinguishing system pipe network explosion-proof device and a top sleeve explosion fire extinguishing system pipe network explosion-proof device; wherein:
the pipe network explosion-proof device of the side casing explosion fire extinguishing system has the following structure: the anti-explosion steel net is composed of long upright posts A1, anti-explosion beams A2 fixed on the long upright posts A1, anti-explosion supports A3 arranged between the anti-explosion beams A2, and anti-explosion steel nets A4 between the anti-explosion beams A2 and the anti-explosion supports A3;
the pipe network explosion-proof device of the top casing explosion fire extinguishing system has the following structure: the anti-explosion device is composed of long columns B1, anti-explosion beams B2 fixed on long columns B1 and anti-explosion supports B3 arranged between the anti-explosion beams B2.
The explosion-proof device is arranged between the high-voltage sleeve and the medium-voltage sleeve of the transformer and the fire extinguishing system pipe network of the main transformer, the height of the explosion-proof device is at least 1m higher than that of the fire extinguishing system pipe network, and the width of the explosion-proof device is 1.5m larger than the explosion influence range of the sleeve. The setting range is determined according to the specific transformer weak part structure and the transformer explosion influence analysis.
Referring to fig. 2, the pipe network explosion-proof device of the side casing explosion fire extinguishing system is composed of components such as a long upright post A1, an explosion-proof beam A2 fixed on the long upright post A1, an explosion-proof support A3 arranged between the explosion-proof beams A2, and an explosion-proof steel net A4 between the explosion-proof beam A2 and the explosion-proof support A3;
during specific implementation, the long upright post A1 is welded or bolted and fixed on a concrete foundation, other anti-explosion cross beams A2 and anti-explosion supports A3 are fixed on the long upright post A1 by welding or bolts, the anti-explosion net A4 is arranged at the corresponding position of an explosion flange in a pipe network anti-explosion device of the side sleeve explosion fire extinguishing system in consideration of the explosion of a maintenance flange on a sleeve lifting seat, and the anti-explosion net is fixed on a main body structure by fasteners. Different transformer structures are different, specifically set up explosion-proof net according to sleeve pipe lifting seat overhauls flange position. The explosion-proof net can adopt a flexible side slope steel protective net, and the distance between grids can not hinder the operation and maintenance and the spraying of a fire extinguishing system pipe network to extinguish fire while preventing explosion. The pipe network explosion-proof device of the side sleeve explosion fire extinguishing system is arranged between a fire extinguishing system spray head and a transformer body, and the spray head is also in an explosion-proof protection range. When the pipe network explosion-proof device of the side casing explosion fire extinguishing system is positioned at the side of the transformer maintenance road, the installation form which is convenient for the installation and maintenance of the transformer is set.
Referring to fig. 3, the pipe network explosion-proof device of the top casing explosion fire extinguishing system consists of components such as a long upright post B1, an explosion-proof cross beam B2 fixed on a long upright post B1, and an explosion-proof support B3 arranged between the explosion-proof cross beams B2;
during specific implementation, the long upright post B1 is welded or bolted and fixed on a concrete foundation, other anti-explosion cross beams B2 and anti-explosion supports B3 are fixed on the long upright post B1 by welding or bolts, the pipe network anti-explosion device of the top sleeve explosion fire extinguishing system is arranged between the branch pipes of the fire extinguishing system and the transformer body, and the spray head can be positioned between the anti-explosion device and the transformer body. When the pipe network explosion-proof device of the top casing explosion fire extinguishing system is positioned at the side of the transformer maintenance road, the installation form which is convenient for the installation and maintenance of the transformer is set.
The invention is mainly applied to the main transformer explosion fire protection of the transformer substation, realizes that when the main transformer is seriously exploded, the explosion part of the transformer is prevented from smashing a fire extinguishing system pipe network to cause the failure of the fire extinguishing system, and simultaneously has certain function of preventing electrical equipment and even personnel from being injured in the explosion direction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. A main transformer explosion fire extinguishing system pipe network explosion-proof device is characterized by comprising two structures, namely a side sleeve explosion fire extinguishing system pipe network explosion-proof device and a top sleeve explosion fire extinguishing system pipe network explosion-proof device; wherein:
the pipe network explosion-proof device structure of the side casing explosion fire extinguishing system is as follows: the anti-explosion steel net is composed of long upright posts (A1), anti-explosion cross beams (A2) fixed on the long upright posts (A1), anti-explosion supports (A3) arranged among the anti-explosion cross beams (A2), and anti-explosion steel nets (A4) among the anti-explosion cross beams (A2) and the anti-explosion supports (A3);
the pipe network explosion-proof device structure of the top sleeve explosion fire extinguishing system is as follows: the anti-explosion device is composed of long upright posts (B1), anti-explosion beams (B2) fixed on the long upright posts (B1) and anti-explosion supports (B3) arranged among the anti-explosion beams (B2);
the main transformer explosion fire extinguishing system pipe network explosion-proof device is arranged between the high-voltage sleeve pipe, the medium-voltage sleeve pipe and the main transformer fire extinguishing system pipe network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610914641.7A CN106390337B (en) | 2016-10-20 | 2016-10-20 | Pipe network explosion-proof device of main transformer explosion fire extinguishing system |
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| CN201610914641.7A CN106390337B (en) | 2016-10-20 | 2016-10-20 | Pipe network explosion-proof device of main transformer explosion fire extinguishing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107080909B (en) * | 2017-04-25 | 2023-08-15 | 浙江日新电气有限公司 | Explosion-proof combined device of transformer and explosion-proof control method thereof |
| CN108735438A (en) * | 2018-05-18 | 2018-11-02 | 云南电网有限责任公司电力科学研究院 | A kind of explosion-proof bushing lifting seat |
| CN108578934A (en) * | 2018-06-20 | 2018-09-28 | 中国能源建设集团云南省电力设计院有限公司 | A kind of fire wall transformer oil anti-splash device |
| CN110152222B (en) * | 2019-05-24 | 2021-03-16 | 国网湖南省电力有限公司 | Electrified fire extinguishing nozzle, electrified explosion-proof fire extinguishing device and electrified fire extinguishing method |
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| US3801416A (en) * | 1972-01-07 | 1974-04-02 | Us Army | Flexible blast fragment blanket |
| GB9322740D0 (en) * | 1993-11-04 | 1993-12-22 | Kenyon Textiles Limited | Protection device |
| CN103943286A (en) * | 2014-05-09 | 2014-07-23 | 国家电网公司 | High-voltage cable porcelain bushing terminal explosion protection device |
| CN105577989A (en) * | 2014-10-08 | 2016-05-11 | 天津市贝斯特防爆电器有限公司 | Explosion-proof camera |
| CN204571482U (en) * | 2015-05-04 | 2015-08-19 | 齐二帅 | A kind of OMS protective screening |
| CN206214604U (en) * | 2016-10-20 | 2017-06-06 | 中国能源建设集团云南省电力设计院有限公司 | A kind of main transformer explosive fire accident fire extinguishing system pipe network explosion-protection equipment |
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