CN104049187A - Interphase high-impedance discharging arc and fire risk experimental device - Google Patents
Interphase high-impedance discharging arc and fire risk experimental device Download PDFInfo
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- CN104049187A CN104049187A CN201410271364.3A CN201410271364A CN104049187A CN 104049187 A CN104049187 A CN 104049187A CN 201410271364 A CN201410271364 A CN 201410271364A CN 104049187 A CN104049187 A CN 104049187A
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Abstract
The invention discloses an interphase high-impedance discharging arc and fire risk experimental device. The device comprises a wooden case with one side open and two two-phase wires, wherein the two wires are installed in the wooden case and are not in contact with each other, the distance between the two wires is kept between 5 mm and 50 mm, strip-shaped cotton fibers or other fibers which have been soaked in water or acid solutions or alkali solution or saline solutions are in contact with and communicated with the two wires, and the two wires are connected into a mains supply circuit through a switch and an open circuit protector. According to the device, an electrical fire test in which interphase high-impedance discharging arcs are generated and combustible solid, liquid and gas are ignited by the discharging arcs is simulated, and theoretical support and science and technology evidence are provided for the development of the technical field of precaution of interphase high-impedance discharging arc type electrical fires, investigation and evidence collection of the cause of a fire and evidence identification.
Description
Technical field
The invention belongs to electric and fire prevention field, relate in particular to a kind of alternate high impedance electrical discharge arc and occur and fire hazard system safety testing device.
Background technology
According to circuit phase insulation electric wire, cause insulation course aging because of the effect such as moist, burn into is aging, insulation resistance drops to a certain degree, or insulation course breakage exposes conductor, appearance alternate with fiber or dust make moist, or the phenomenon of the aging discontinuity conducting electric discharge of phase insulation burn into.While there is alternate high impedance electrical discharge arc generation in circuit, produce discontinuity electric arc and produce high arc temperature effect, high temperature action can make insulation course charing, and charring layer further strengthens the meeting of alternate high impedance Electrical Discharge Machine, forms vicious cycle.Alternate high impedance electrical discharge arc leaves the feature hint of high arc temperature effect as use, but at arcing place, forms melting trace hardly.If after high arc temperature initiation fire, after the effect of experience high temperature of fire, the feature hint of high arc temperature effect will be covered by fire effect, substantially cannot find this class vestige.Only on superfine little multicore cable, may occur smallly dissolving vestige or the trace that fuses individually, visual inspection likely can not be found this electric heating melting trace.This just means that some electrical fire causes because of alternate high impedance electrical discharge arc, but cannot find effective trace evidence.In fact in electrical fire at most, greatly dangerous, disguised extremely strong, most electrical fires all belong to that this class electric fault causes to the electrical fire quantity that alternate high impedance electrical discharge arc causes.Because alternate high impedance discharge generation electric arc is not only easy to light cotton-shaped inflammable dust, but also can light the inflammable gas that reaches explosion limits, cause fire failure.Alternate high impedance electrical discharge arc is one of most important ignition source causing electrical fire.
Prior art is mainly summed up as electricity consumption danger due to the electric heating effect high temperature of short circuit, overcurrent and electric leakage.Ignored the initiation fire to electric arc high impedance and loose contact electrical discharge arc high temperature action.In fact most electrical fires all belongs to circuit high resistant and the initiation of loose contact electrical discharge arc class fire.
Summary of the invention
The object of the present invention is to provide a kind of alternate high impedance electrical discharge arc to occur and fire hazard system safety testing device, be intended to simulate the generation of alternate high impedance electrical discharge arc and electrical discharge arc flammable the electric fire tests of simulation such as solid, liquids and gases that ignite, for the prevention of alternate high impedance electrical discharge arc class electrical fire and the expansion of the technical field that cause of fire is investigated and collected evidence, material evidence is identified provide theoretical, support and scientific and technical evidence.
The present invention realizes like this; a kind of alternate high impedance electrical discharge arc occurs and fire hazard system safety testing device comprises wooden case and two two phase conductors that have an opening; article two, wire is arranged in wooden case; article two, wire does not contact; distance remains between 5～50mm; same with the strip wool fiber or the connection of other quality fiber contact that have infiltrated water or acid, alkali, salt solusion on two wires, two wires of this device are by switch and breaker protector access line.
effect gathers
The present invention has simulated the generation of alternate high impedance and loose contact electrical discharge arc and electrical discharge arc flammable the electric fire tests of simulation such as solid, liquids and gases that ignite, and for the prevention of alternate high impedance electrical discharge arc class electrical fire and the expansion of the technical field that cause of fire is investigated and collected evidence, material evidence is identified provide theoretical, supports and scientific and technical evidence.
Accompanying drawing explanation
Fig. 1 is that alternate high impedance electrical discharge arc that the embodiment of the present invention provides occurs and the structural representation of fire hazard system safety testing device;
In figure: 1, wooden case; 2, wire; 3, cotton or other quality fiber.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.There is not the innovation of method or software in the present invention.
Fig. 1 shows the structure of alternate high impedance electrical discharge arc generation of the present invention and fire hazard system safety testing device, as shown in the figure, the present invention realizes like this, a kind of alternate high impedance electrical discharge arc occurs and fire hazard system safety testing device comprises wooden case 1 and two wires 2 of two-phase that have an opening, article two, wire 2 is arranged in wooden case 1, article two, wire 2 does not contact, distance remains between 10～50mm, with having infiltrated water or acid, alkali, the strip wool fiber of salt solusion or other quality fiber contact are communicated with same, two wires of this device are by switch and breaker protector access line.
Below in conjunction with specific embodiment, principle of work of the present invention is described in further details:
The switch of closed alternate high impedance electrical discharge arc generation and fire risk experimental provision, the alternate high impedance electrical discharge arc of 2 generations that will be interrupted of two wires, while having around flammable or inflammable solid, liquid or gaseous combustible thing, will light combustible initiation fire.
Disconnect the switch of alternate high impedance electrical discharge arc generation and fire risk experimental provision, take off the wire 2 in wooden case 1, with the naked eye or Stereo microscope examine wire 2 outside surfaces, see and have or not high arc temperature melting trace, experimental result is that wire 2 outside surfaces do not have high arc temperature melting trace to occur, the actual miniwatt heating electrical appliance that is equivalent to of the alternate electric discharge of high impedance is described.
Explanation thus:
1, because the effect such as moist, burn into is aging causes insulation resistance to drop to a certain degree, there is the phenomenon that alternate discontinuity conducting is discharged in phase insulation electric wire.
2, impedance short circuit dischange electric arc feature: general electric arc sound and the arclight producing is all larger, there is discontinuity feature, do not form arc-melting vestige, when there is alternate high impedance short circuit dischange generation electric arc in split conductor, only there are indivedual cores likely to fuse and form very little molten trace, if this electric heating melting trace is even likely can't see in not careful observation, this is not easy to find the reason of effective material evidence with regard to the fire that causes some alternate high impedance short circuit dischange generation electric arc to cause.But alternate high impedance short circuit dischange really can produce electric spark and light solid-state cotton-shaped fire goods, flammable liquid and inflammable gas and cause fire failure while producing electric arc, really at electric arc, go out substantially not stay arcing vestige.
In fire investigation, while having determined fire location or point of origin in scene of fire, if known this principle, when investigate on the spot scene of fire, if during short-circuit protector tripping, can search short circuit trace evidence.If short-circuit protector during tripping, can not force and search arcing vestige, and should be according to scene the possibility of the alternate high impedance electrical discharge arc of concrete condition Analysis deterrmination effect of relation between inflammable or combustible and electric wire and circuit two phase conductors.
In fire investigation; while having determined fire location or point of origin in scene of fire, if do not known that this principle, when short-circuit protector does not have tripping, often thinks and there is no short circuit; careless decision is not electrical fire, and result has been ignored alternate high impedance electrical discharge arc initiation fire.The very large man power and material of result expense removes to find other ignition source, gainless, finally cannot assert the reason of initiation fire.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that performing creative labour can make or distortion still within protection scope of the present invention.
Claims (2)
1. an alternate high impedance electrical discharge arc occurs and fire hazard system safety testing device; it is characterized in that; described device comprises the wooden case and two two phase conductors that there are an opening; article two, wire is arranged in wooden case; article two, wire does not contact; same with the strip wool fiber or the connection of other quality fiber contact that have infiltrated water or acid, alkali, salt solusion on two wires, two wires of this device are by switch and breaker protector access line.
2. alternate high impedance electrical discharge arc as claimed in claim 1 occurs and fire hazard system safety testing device, it is characterized in that, two wires do not contact, and distance remains between 5～50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410271364.3A CN104049187B (en) | 2014-06-18 | 2014-06-18 | A kind of alternate high impedance electrical discharge arc and fire risk experimental provision |
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| CN201410271364.3A CN104049187B (en) | 2014-06-18 | 2014-06-18 | A kind of alternate high impedance electrical discharge arc and fire risk experimental provision |
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| CN104049187A true CN104049187A (en) | 2014-09-17 |
| CN104049187B CN104049187B (en) | 2017-10-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854799A (en) * | 2017-12-07 | 2018-03-30 | 公安部上海消防研究所 | A kind of more scene electric short circuit analogue experiment installations and method |
| CN110208627A (en) * | 2019-06-20 | 2019-09-06 | 应急管理部四川消防研究所 | A kind of overcurrent ignition source prevention and control device fire prevention and control aptitude tests method |
| CN110221149A (en) * | 2019-06-20 | 2019-09-10 | 应急管理部四川消防研究所 | Poor contact ignition source prevention and control device fire prevention and control aptitude tests device and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096605A (en) * | 1994-02-05 | 1994-12-21 | 杨稔芳 | Electric line firing source simulator |
| WO2007095739A1 (en) * | 2006-02-21 | 2007-08-30 | The Governors Of The University Of Alberta | Analysis of thin liquid films |
| CN202057763U (en) * | 2011-04-02 | 2011-11-30 | 中国南方电网有限责任公司超高压输电公司梧州局 | Experimental device of simulating high voltage transmission line flashover discharge triggered by forest fire |
| CN103235246A (en) * | 2013-05-08 | 2013-08-07 | 上海电缆研究所 | Voltaic arc resistance experimental device of aviation wire and experimental method of device |
| CN203259625U (en) * | 2013-05-08 | 2013-10-30 | 上海电缆研究所 | Aviation wire wet arc droplet container |
| KR20140033768A (en) * | 2012-09-10 | 2014-03-19 | 삼성전자주식회사 | Arc fault detecting apparatus, electrical apparatus and method for controlling the same |
| CN103776973A (en) * | 2014-03-04 | 2014-05-07 | 中山大学 | Electrical fire short circuit simulator and simulation method thereof |
| CN103839473A (en) * | 2014-03-07 | 2014-06-04 | 中山大学 | Electrical fire scene experience device and control method thereof |
| CN203909224U (en) * | 2014-06-18 | 2014-10-29 | 公安部四川消防研究所 | Inter-phase high-impedance discharge arc and fire risk experiment device |
-
2014
- 2014-06-18 CN CN201410271364.3A patent/CN104049187B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096605A (en) * | 1994-02-05 | 1994-12-21 | 杨稔芳 | Electric line firing source simulator |
| WO2007095739A1 (en) * | 2006-02-21 | 2007-08-30 | The Governors Of The University Of Alberta | Analysis of thin liquid films |
| CN202057763U (en) * | 2011-04-02 | 2011-11-30 | 中国南方电网有限责任公司超高压输电公司梧州局 | Experimental device of simulating high voltage transmission line flashover discharge triggered by forest fire |
| KR20140033768A (en) * | 2012-09-10 | 2014-03-19 | 삼성전자주식회사 | Arc fault detecting apparatus, electrical apparatus and method for controlling the same |
| CN103235246A (en) * | 2013-05-08 | 2013-08-07 | 上海电缆研究所 | Voltaic arc resistance experimental device of aviation wire and experimental method of device |
| CN203259625U (en) * | 2013-05-08 | 2013-10-30 | 上海电缆研究所 | Aviation wire wet arc droplet container |
| CN103776973A (en) * | 2014-03-04 | 2014-05-07 | 中山大学 | Electrical fire short circuit simulator and simulation method thereof |
| CN103839473A (en) * | 2014-03-07 | 2014-06-04 | 中山大学 | Electrical fire scene experience device and control method thereof |
| CN203909224U (en) * | 2014-06-18 | 2014-10-29 | 公安部四川消防研究所 | Inter-phase high-impedance discharge arc and fire risk experiment device |
Non-Patent Citations (1)
| Title |
|---|
| 王芳 等: "导电纤维丝束在高压导线相间引弧试验研究", 《弹箭与制导学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107854799A (en) * | 2017-12-07 | 2018-03-30 | 公安部上海消防研究所 | A kind of more scene electric short circuit analogue experiment installations and method |
| CN107854799B (en) * | 2017-12-07 | 2022-12-30 | 应急管理部上海消防研究所 | Multi-scene electrical short circuit simulation experiment device and method |
| CN110208627A (en) * | 2019-06-20 | 2019-09-06 | 应急管理部四川消防研究所 | A kind of overcurrent ignition source prevention and control device fire prevention and control aptitude tests method |
| CN110221149A (en) * | 2019-06-20 | 2019-09-10 | 应急管理部四川消防研究所 | Poor contact ignition source prevention and control device fire prevention and control aptitude tests device and method |
| CN110208627B (en) * | 2019-06-20 | 2021-06-25 | 应急管理部四川消防研究所 | Method for testing fire prevention and control capability of over-current ignition source prevention and control device |
| CN110221149B (en) * | 2019-06-20 | 2021-09-07 | 应急管理部四川消防研究所 | Device and method for testing fire prevention and control capability of poor-contact ignition source prevention and control device |
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