CN104977432A - Water spray apparatus for long-string insulator wet operation impact test, and application thereof - Google Patents
Water spray apparatus for long-string insulator wet operation impact test, and application thereof Download PDFInfo
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- CN104977432A CN104977432A CN201410146737.4A CN201410146737A CN104977432A CN 104977432 A CN104977432 A CN 104977432A CN 201410146737 A CN201410146737 A CN 201410146737A CN 104977432 A CN104977432 A CN 104977432A
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Abstract
The invention relates to a water spray apparatus for a long-string insulator wet operation impact test, and an application thereof. The water spray apparatus comprises nozzles, a nozzle frame, flexible pipes connecting the nozzles with external waterways, and a water volume control system, wherein the nozzle frame comprises a seat body and an insulation pillar vertically arranged on the seat body, the insulation pillar comprises a cylinder and a plurality of umbrella bodies formed on the cylinder, the insulation pillar is provided with the plurality of nozzles at equal distances along a vertical direction, and the distance between adjacent nozzles is 0.4 to 0.6m. The application comprises applying the water spray apparatus to the long-string insulator wet operation impact test, wherein the nozzle frame of the water spray apparatus is arranged at a position four meters away from a long-string insulator sample. According to the invention, the apparatus and application can ensure that the water spray angle and the water spray amount meet standard requirements and can also guarantee electrical insulation, thereby being applied to rain flashover and pollution rain flashover test research on an extra-high voltage pillar insulator.
Description
Technical field
The present invention relates to the test of high-tension insulator switching impulse withstand voltage, more particularly, relate to long-string insulator wet practice impulse test water injector and application thereof.
Background technology
Development UHV transmission is the Important Action in China's electric power development history, utilizes be significant for the Efficient Development realizing wider most optimum distribution of resources and promotion China energy.China builds many 1000kV ultra-high voltage AC transmission engineerings and ± 800kV extra-high voltage direct-current transmission engineering.At present, China is building silk screen-southern Jiangsu and two, waxy common wheat-Guangdong extra-high voltage ± 800kV DC transmission engineering." 12 " period, also by multinomial for planning construction extra-high voltage AC and DC engineering, greatly will promote " transferring electricity from the west to the east " ability.
Along with the raising of electric pressure, insulator chain is long constantly to be increased, the insulator test product needing R and D new.The wet practice impulse voltage test of insulator is the important tests that Insulators Used detects.In detection in the past, be all adopt short string test product (string is long is generally less than 5 meters) to carry out correlation test, test difficulty is little, carries out smoothly.At present wet practice impulse voltage test is carried out for extra-high voltage full-scale insulator test product (general UHV Long Insulator String is grown up in 8 meters), because insulator chain is longer, it is long that this just requires that the insulation distance of traditional water injector and insulator should be greater than insulator chain, otherwise easily cause high-pressure side to discharge to water injector, and do not have the effect detecting insulator electric property.But when water injector distance insulator length is longer, the water of ejection cannot meet the trickle angle that insulator wet test requires.Therefore, traditional water injector is adopted cannot to complete the wet practice impulse voltage test of extra-high voltage long-string insulator.
Summary of the invention
The object of this invention is to provide a kind of long-string insulator wet practice impulse test water injector and application thereof, this water injector can ensure that water spray angle and injection flow rate meet standard-required, can ensure electric insulation again.
The technical solution used in the present invention is as follows:
A kind of long-string insulator wet practice impulse test water injector, comprise shower nozzle, jet nozzle, the flexible pipe in connection shower nozzle and extraneous water route and water yield control system, the insulation column that described jet nozzle comprises pedestal and is arranged on vertically on this pedestal, described insulation column is containing cylinder and a plurality of umbrella bodies be molded on this cylinder, the vertically a plurality of shower nozzle of equidistant installation on described insulation column, the distance between adjacent shower nozzle is 0.4-0.6 rice.
In above-mentioned long-string insulator wet practice impulse test water injector, preferably, the height of described insulation column is 10-15 rice, and nethermost shower nozzle is 5-7 rice to the distance of described pedestal.
In above-mentioned long-string insulator wet practice impulse test water injector, preferably, the umbrella spacing of described insulation column is 85 millimeters-100 millimeters, and it is 80 millimeters-90 millimeters that umbrella stretches out.
In above-mentioned long-string insulator wet practice impulse test water injector, preferably, described insulation column is is removably connected and composed by plural knot insulation column.
In above-mentioned long-string insulator wet practice impulse test water injector, preferably, the pedestal of described jet nozzle is cruciform, and the center of cruciform pedestal arranges terminal pad, and described insulation column is arranged on the pedestal of described jet nozzle by this terminal pad.
In above-mentioned long-string insulator wet practice impulse test water injector, preferably, described nozzle spatially wimble structure.
A kind of long-string insulator wet practice impact test method, this test method adopts the water injector described in above-mentioned any one to spray water to long-string insulator test product, and the jet nozzle of water injector is arranged on distance insulator string test product 4 meters of.
In above-mentioned long-string insulator wet practice impact test method, preferably, long-string insulator test product is the UHV Long Insulator String of 10 meters.
The present invention has the following advantages:
Owing to have employed the jet nozzle of said structure, water injector is made to have preferably insulating property, therefore, it is possible to closely high-pressure side can not be caused to discharge to water injector to long-string insulator test product water spray, therefore this water injector is applied to long-string insulator wet practice impulse test, can ensure that water spray angle and injection flow rate meet standard-required, can ensure electric insulation again, the rain that can be used for ultra-high-voltage post insulator dodges and dirty rain sudden strain of a muscle experimental study.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment water injector;
Fig. 2 is the enlarged drawing in A portion in Fig. 1.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further.
As illustrated in fig. 1 and 2, the present embodiment long-string insulator wet practice impulse test water injector comprises: shower nozzle 1, jet nozzle 2, connects the flexible pipe 3 in shower nozzle 1 and extraneous water route, and water yield control system 4.
Jet nozzle 2 comprises pedestal 21 and is arranged on the insulation column 22 on this pedestal 21 vertically.
Pedestal 21 in cruciform, by two joist steel intersect 90 ° form, every root joist steel length is 10m, and the center weld diameter of cruciform pedestal is the disk (terminal pad) 211 of 30cm, and insulation column 22 is arranged on pedestal 21 by this disk 211.Pedestal 21 is for supports insulative pillar 22, and its structure and shape are not limited to above-mentioned explanation.
Insulation column 22 is made up of six knot insulation columns, installs successively from bottom to top, fixes by screw means, insulation column 22 vertical direction height 13m.The position of insulation column 22 vertical direction 6m-13m, installs a shower nozzle 1 every 0.5m, and namely nethermost shower nozzle is 6 meters to the distance of pedestal 21.In certain embodiments, the length of insulation column 22 can also be designed to 10-15 rice, and nethermost shower nozzle can also be designed to 5-7 rice to the distance of described pedestal 21, and the distance between adjacent shower nozzle can also be designed to 0.4-0.6 rice.
Insulation column 22 is containing cylinder 221 and a plurality of umbrella bodies 222 be molded on this cylinder 221, and umbrella spacing (distances namely between adjacent two umbrella bodies 222) is 85 millimeters, and umbrella stretches out, and (namely umbrella body 222 is interior along the distance to outer) is 80 millimeters.In some embodiments, the umbrella spacing of described insulation column can also be designed to 85 millimeters-100 millimeters, and umbrella stretches out and can be designed as 80 millimeters-90 millimeters.
Nozzle 1 spatially wimble structure.Nozzle 1 also can adopt the various nozzles used in existing insulator wet practice impulse test.Water yield control system 4 can adopt existing water quantity controller.
Above-mentioned jet nozzle 2 makes this water injector have preferably insulating property, therefore, it is possible to closely high-pressure side can not be caused to discharge to water injector to long-string insulator test product water spray, therefore this water injector is applied to long-string insulator wet practice impulse test, can ensure that water spray angle and injection flow rate meet standard-required, can ensure electric insulation again, the rain that can be used for ultra-high-voltage post insulator dodges and dirty rain sudden strain of a muscle experimental study.
Carry out in long-string insulator wet practice impulse test at the above-mentioned water injector of employing, the jet nozzle 2 of water injector can be arranged on distance insulator string test product 4 meters of.The UHV Long Insulator String that can be used in 10 meters carries out wet practice impulse test.
Claims (8)
1. a long-string insulator wet practice impulse test water injector, comprise shower nozzle (1), jet nozzle (2), connect the flexible pipe (3) in shower nozzle and extraneous water route, and water yield control system (4), it is characterized in that: described jet nozzle (2) comprises pedestal (21) and is arranged on the insulation column (22) on this pedestal (21) vertically, described insulation column (22) is containing cylinder (221) and a plurality of umbrella bodies (222) of being molded on this cylinder, the vertically a plurality of shower nozzle of equidistant installation (1) on described insulation column (22), distance between adjacent shower nozzle is 0.4-0.6 rice.
2. long-string insulator wet practice impulse test water injector according to claim 1, it is characterized in that: the height of described insulation column (22) is 10-15 rice, nethermost shower nozzle is 5-7 rice to the distance of described pedestal (21).
3. long-string insulator wet practice impulse test water injector according to claim 1, it is characterized in that: the umbrella spacing of described insulation column (22) is 85 millimeters-100 millimeters, it is 80 millimeters-90 millimeters that umbrella stretches out.
4. long-string insulator wet practice impulse test water injector according to claim 1, is characterized in that: described insulation column (22) is is removably connected and composed by plural knot insulation column.
5. long-string insulator wet practice impulse test water injector according to claim 1, it is characterized in that: the pedestal (21) of described jet nozzle (2) is in cruciform, the center of cruciform pedestal arranges terminal pad (211), and described insulation column is arranged on the pedestal of described jet nozzle by this terminal pad.
6. long-string insulator wet practice impulse test water injector according to claim 1, is characterized in that: described nozzle spatially wimble structure.
7. a long-string insulator wet practice impact test method, is characterized in that: this test method adopts the water injector described in above-mentioned any one to spray water to long-string insulator test product, and the jet nozzle of water injector is arranged on distance insulator string test product 4 meters of.
8. long-string insulator wet practice impact test method according to claim 7, is characterized in that: long-string insulator test product is the UHV Long Insulator String of 10 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410146737.4A CN104977432B (en) | 2014-04-11 | 2014-04-11 | Long-string insulator wet practice impact test water injector and its application |
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| CN201410146737.4A CN104977432B (en) | 2014-04-11 | 2014-04-11 | Long-string insulator wet practice impact test water injector and its application |
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| CN104977432A true CN104977432A (en) | 2015-10-14 |
| CN104977432B CN104977432B (en) | 2019-09-20 |
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| CN103198907A (en) * | 2013-04-17 | 2013-07-10 | 国家电网公司 | Temporary support insulator for hot-line work wires of 10 kV power distribution |
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| JPH05203694A (en) * | 1992-01-23 | 1993-08-10 | Showa Electric Wire & Cable Co Ltd | Method for testing water-tree resistance of cable insulator |
| CN2785717Y (en) * | 2005-04-08 | 2006-06-07 | 陈百球 | Electrostatic painting insulation rod |
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| CN101912832A (en) * | 2010-05-25 | 2010-12-15 | 东南大学 | Self-controllable wind-induced rain load simulation experimental device for buildings |
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| CN202512049U (en) * | 2012-03-06 | 2012-10-31 | 中国联合工程公司 | Rainfall device |
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| CN103198907A (en) * | 2013-04-17 | 2013-07-10 | 国家电网公司 | Temporary support insulator for hot-line work wires of 10 kV power distribution |
| CN103645112A (en) * | 2013-12-10 | 2014-03-19 | 南方电网科学研究院有限责任公司 | Portable device and method for researching insulator contamination losing coefficient |
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| CN104977432B (en) | 2019-09-20 |
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Address after: 510080 West Tower, Yuedian building, No.6 and 8 shuijungang, Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: ELECTRIC POWER Research Institute CHINA SOUTHERN POWER GRID Patentee after: Shenzhen International Graduate School of Tsinghua University Address before: 510080 West Tower, Yuedian building, No.6 and 8 shuijungang, Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: ELECTRIC POWER Research Institute CHINA SOUTHERN POWER GRID Patentee before: GRADUATE SCHOOL AT SHENZHEN, TSINGHUA University |