CN102636734A - Low-voltage electric fire prevention and detection device - Google Patents
Low-voltage electric fire prevention and detection device Download PDFInfo
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- CN102636734A CN102636734A CN201210140743XA CN201210140743A CN102636734A CN 102636734 A CN102636734 A CN 102636734A CN 201210140743X A CN201210140743X A CN 201210140743XA CN 201210140743 A CN201210140743 A CN 201210140743A CN 102636734 A CN102636734 A CN 102636734A
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 239000004033 plastic Substances 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000001535 kindling effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Abstract
The invention discloses a low-voltage electric fire prevention and detection device, which mainly comprises at least one group of detection cables (10), a capacitor C and a multi-path intelligent detector (11), wherein each detection cable (10) consists of a heat-shrinkable bush (1), two metal wires (2) and an isolating plastic tube (3); the two metal wires (2) are arranged in the isolating plastic tube (3) side by side; a cavity (4) is reserved between the two metal wires (2); the isolating plastic tube (3) is wrapped by the heat-shrinkable bush (1); the multi-path intelligent detector (11) is connected to one end of each group of detection cables (10); and the other end of each group of detection cables (10) is connected with the capacitor C to form a loop to detect the quality of the detection cables (10). According to the low-voltage electric fire prevention and detection device, the heat-shrinkable bush with high cost performance is used as a heat sensor; the low-voltage electric fire prevention and detection device is suitable for fault detection of a low-voltage electric system; accurate detection of a fault point can be realized; and the low-voltage electric fire prevention and detection device has the advantages of low manufacturing cost, simplicity, easiness, safety, reliability and capability of effectively preventing occurrence of low-voltage electric fire.
Description
Technical field
The present invention relates to the fire detection apparatus field of low-voltage power supply system, especially a kind of through using the device that the heat-shrink tube technology realizes the fire prevention detection.
Background technology
The fire that electrical circuit fault causes is one of topmost a kind of fire occurrence cause, how effectively to detect the important content that low-voltage electrical line fault becomes fire detection and prevention area.
We know: after 1) electric current of low-voltage supply line conveying exceeded load current value, supply lines can produce higher temperature, even melted the insulation course generation short circuit of its appearance, even produced high temperature and electric arc, caused fire.2) the low-voltage distribution side has many electrical connectors, when these joints service time for a long time after, the situation of " loose contact " possibly appear, cause the joint to produce high temperature and electric spark, be to cause one of reason that electrical equipment catches fire.3) in the covil construction, have a large amount of wiring lack of standardization, as: with copper cash substitute fuse, in more high-power loop with the line of the little line substitute specification sectional area of aluminum core line instead of copper heart yearn or sectional area; These ways lack of standardization even infraction of regulations are the key factors that causes fire.
At present, in order to detect this disaster hidden-trouble, have several kinds of technology to realize:
1) probes such as thermistor, temperature sensor are installed in power supply on the cable, are produced alerting signal after detecting uniform temperature, it is active device that this mode exists certain defective: A, sensor, need working power be provided for it; B, monitoring point are discontinuous; C, when detected object for a long time, need probe quantity big, data amount transmitted also can increase, cost will increase; D, transmission link are long more, receive interference many more, and reliability will reduce many.
2) a kind of alloy probe sensing temperature being installed in the low-voltage power supply cable changes; This alloy is arranged with cable; Because this alloy is very expensive; So the cost of this cable is also very high, not that special place is out of use, it also has a defective: can not detect the specified place that high temperature takes place.
3) optical fiber together is installed on the low-voltage power supply cable, as temperature sensor, as long as higher temperature variation is arranged, optical fiber can detect with optical fiber.This Device Testing end is a photoelectric conversion device, and its cost is not low yet, and simultaneously, in case optical fiber breaks down, it safeguards very inconvenience, needs special equipment.
For the low-voltage electrical fire that prevents the above reason to cause, need a kind of special fire detecting devocw in real life and the work, can realize the accurate detection of trouble spot, effectively prevent the generation of low-voltage electrical fire.
Summary of the invention
The technical matters that the present invention will solve provides a kind of low-voltage electrical fire prevention pick-up unit, can realize the accurate detection of trouble spot, effectively prevents electrical fire to take place.
The present invention solves the problems of the technologies described above with following technical scheme:
A kind of low-voltage electrical fire prevention of the present invention pick-up unit, it mainly detects cable 10, capacitor C and multi-way intelligence detecting device 11 by at least one group and forms.
Said detection cable 10 is the flat profile, is made up of heat-shrink tube 1, two wires 2 and isolation plastics 3.Two wires 2 are installed in side by side isolates in the plastic tube 3, leaves cavity 4 between two wires 2, isolates plastic tube 3 and is wrapped with heat-shrink tube 1.
Said multi-way intelligence detecting device 11 is connected to every group of end that detects cable 10, and every group of other end connection capacitor C that detects cable 10 is connected to form the loop.
Be arranged with protruding 14 between the isolation plastic tube 3 of said detection cable 10 and metal wire 2 contacted two inboards and two wires 2.
The present invention realizes passive, the continuous configuration of thermal sensor through adopting the higher heat-shrinkable T bush of cost performance as thermal sensor, and the monitoring point can be arranged according to actual needs; Detected object can be point, face, line; Be applicable to various power line, plug, controller switching equipment and various electrical appliance, realized accurate detection the trouble spot, cheap, simple, safe and reliable; Can carry out the initial failure prediction, effectively prevent the generation of electrical fire.
Description of drawings
Fig. 1 is a testing circuit schematic diagram of the present invention.
Fig. 2 is a detection cable cross sectional representation of the present invention.
Fig. 3 is a detection cable profile synoptic diagram of the present invention.
Fig. 4 is a detection synoptic diagram of the present invention.
1---heat-shrink tube
2---metal wire
3---isolate plastic tube
4---cavity
5---busbar
6---fuse
7---contactor
8---isolating switch
9---service cable
10---detect cable
11---the multi-way intelligence detecting device
12---electric wire (cable) joint
13---socket
14---convexity
C---electric capacity
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
Low-voltage electrical fire prevention pick-up unit of the present invention, it mainly detects cable 10, capacitor C and multi-way intelligence detecting device 11 by at least one group and forms.Multi-way intelligence detecting device 11 is connected to every group of end that detects cable 10, and every group of other end connection capacitor C that detects cable 10 is connected to form the loop.Multi-way intelligence detecting device 11 can send AC signal and return via capacitor C, whether is in normal condition thereby detect whole piece detection cable.As shown in Figure 1.
Detecting cable 10 is the flat profile, as shown in Figures 2 and 3.Detecting cable 10 is made up of heat-shrink tube 1, metal wire 2 and isolation plastic tube 3.As shown in Figure 2.Metal wire 2 has two; Be arranged in parallel to be installed in and isolate in the plastic tube 3; And through the isolation of isolation plastic tube 3 realizations with the tube wall of heat-shrink tube 1, be reserved with certain cavity 4 in the tube chamber of isolation plastic tube 3 two metal tubes 2 are separated, isolate plastic tube 3 and be wrapped with heat-shrink tube 1.
In order to realize making heat-shrink tube 1 realize better compression effectiveness, can between isolation plastic tube 3 and contacted two inboards of metal wire and two wires 2, be arranged with protruding 14.After heat-shrink tube 1 is experienced high temperature, produce convergent force compressing protruding 14 and make two wires 2 contact, and form the loop between the multi-way intelligence detecting device 11, multi-way intelligence detecting device 11 just can detect the loop resistance value, thereby judges this short dot position.
The crust that detects cable 10 adopts heat-shrink tube.Heat-shrink tube is a kind of special polyolefin material thermal contraction casing tube, also has to be called the EVA material, and it has, and low temperature shrinks, soft fire-retardant, insulation function of prevent erosion.Heat-shrink tube is in the insulation protection of various wire harness, solder joint, inductance, is used widely in antirust, the corrosion protection of metal tube, rod.
The principle of work of this device is following:
As shown in Figure 4; Can be according to the actual requirements, the flat horizontal surface that selection will detect cable 10 is arranged in the various electrical equipments that possibly produce high temperature, electric spark such as busbar 5, fuse 6, isolating switch 7, contactor 8, service cable 9, electric wire (cable) joint 12, socket 13.After certain wherein reaches certain temperature (as 100 ℃); The crust (heat-shrink tube 1) that detects cable 10 shrinks (shrinkage factor can reach 30%-50%) inwards; Oppress two wires, 2 move toward one another and contact; Form the phenomenon of partial short-circuit, be installed in an end multi-way intelligence detecting device 11 that detects cable 10 and will detect the metal wire 2 " short circuit phenomenon " that detects in the cable 10 at once, produce alerting signal simultaneously and let other smart machines carry out to cut off the electricity supply the preparation of power supply.Because heat-shrink tube 1 operating temperature about 100 ℃, is lower than the kindling point of many materials.When multi-way intelligence detecting device 11 has detected " short circuit " signal and produces, through intelligence computation and demonstrate the distance of lap-joint, make things convenient for the maintainer to find the place that produces fault, thereby reduced the occurrence probability of fire greatly to multi-way intelligence detecting device 11.
Said multi-way intelligence detecting device 11 can adopt the detecting device of prior art, and its calculating principle that detects distance is: the resistance R of long lead and line length L, cross-sectional area S, line resistance rate ρ have following relational expression: R=ρ (L/S).Under the situation of known ρ, S, measure resistance value after, can calculate the value of L, thereby judge the distance of " short circuit ".Intelligent detector can be set to " timesharing detection ", so just can " simultaneously " detects the input signal of multichannel fireproof cable, in case after detecting " short circuit " signal, calculate short-circuit signal and where occur at once, and send information such as warning to the higher level.
If detect cable action back or break down, can the fault place be cut, insert the new detection cable of another root, connect wherein metal wire and bandage and can recover measuring ability, safeguard very convenient.
This device can connect many groups and detect cables, the mode of " timesharing detections " through the multi-way intelligence detector is set, measuring abilities when realizing many group detection cables.
The present invention is through adopting the higher heat-shrinkable T bush of cost performance as thermal sensor; Can realize detecting when many groups detect cable; Be applicable to various power line, plug, controller switching equipment and various electrical appliance; Realized accurate detection to the trouble spot, cheap, simple, safe and reliable, effectively prevented the generation of low-voltage electrical fire.
Claims (2)
1. a low-voltage electrical fire prevention pick-up unit is characterized in that, it mainly detects cable (10), capacitor C and multi-way intelligence detecting device (11) by at least one group and forms; Said detection cable (10) is made up of heat-shrink tube (1), two wires (2) and isolation plastic tube (3); Two wires (2) are installed in side by side isolates in the plastic tube (3); Leave cavity (4) between two wires (2), isolate plastic tube (3) and be wrapped with heat-shrink tube (1); Said multi-way intelligence detecting device (11) is connected to every group of end that detects cable (10), and every group of other end connection capacitor C that detects cable (10) is connected to form the loop.
2. according to claims 1 described low-voltage electrical fire prevention pick-up unit, it is characterized in that, be arranged with convexity (14) between contacted two inboards of the isolation plastic tube (3) of said detection cable (10) and metal wire (2) and two wires (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210140743.XA CN102636734B (en) | 2012-05-08 | 2012-05-08 | Low-voltage electric fire prevention and detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210140743.XA CN102636734B (en) | 2012-05-08 | 2012-05-08 | Low-voltage electric fire prevention and detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102636734A true CN102636734A (en) | 2012-08-15 |
| CN102636734B CN102636734B (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210140743.XA Expired - Fee Related CN102636734B (en) | 2012-05-08 | 2012-05-08 | Low-voltage electric fire prevention and detection device |
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| Country | Link |
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| CN (1) | CN102636734B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017158508A1 (en) * | 2016-03-16 | 2017-09-21 | Dubai Electricity & Water Authority | Smart fire warning for low voltage electrical panels |
| CN110672962A (en) * | 2019-10-22 | 2020-01-10 | 东莞市鸿茂物联网科技有限公司 | State monitoring system for electric equipment |
| CN110895864A (en) * | 2018-09-13 | 2020-03-20 | 开利公司 | Fire detection system tool for constraint-consistent placement of fire equipment |
Citations (10)
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| GB619797A (en) * | 1946-12-24 | 1949-03-15 | Fenwal Inc | Improvements in and relating to a fire detector cable |
| US2501457A (en) * | 1945-07-20 | 1950-03-21 | Fenwal Inc | Fire detector cable |
| CN86204615U (en) * | 1986-07-06 | 1987-08-05 | 潘兆铿 | Thermal contracted membrance type fire monitor and automatic extinguishing device |
| CN2051370U (en) * | 1989-05-26 | 1990-01-17 | 公安部沈阳消防科学研究所 | Linear temp. sensing fire detector |
| CN1301000A (en) * | 2000-12-28 | 2001-06-27 | 康达（成都）电子有限公司 | Tunnel fire monitoring alarm device |
| CN2487051Y (en) * | 2001-05-22 | 2002-04-17 | 张陈 | Intelligent recoverable complex line type fixed temperature fire detector |
| CN2809746Y (en) * | 2005-07-12 | 2006-08-23 | 张卫社 | A flexible corrosion-resistant switching value linear heat sensitive detector |
| CN101241629A (en) * | 2008-01-16 | 2008-08-13 | 张陈 | Beyond retrievable linear temperature-sensing fire disaster detector short circuit fault and alarming method |
| CN102163359A (en) * | 2011-04-12 | 2011-08-24 | 李萍 | Linear temperature sensor with spare loop |
| CN202583393U (en) * | 2012-05-08 | 2012-12-05 | 广西达科建筑智能工程有限公司 | Low-voltage electrical fire prevention and detection apparatus |
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2012
- 2012-05-08 CN CN201210140743.XA patent/CN102636734B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2501457A (en) * | 1945-07-20 | 1950-03-21 | Fenwal Inc | Fire detector cable |
| GB619797A (en) * | 1946-12-24 | 1949-03-15 | Fenwal Inc | Improvements in and relating to a fire detector cable |
| CN86204615U (en) * | 1986-07-06 | 1987-08-05 | 潘兆铿 | Thermal contracted membrance type fire monitor and automatic extinguishing device |
| CN2051370U (en) * | 1989-05-26 | 1990-01-17 | 公安部沈阳消防科学研究所 | Linear temp. sensing fire detector |
| CN1301000A (en) * | 2000-12-28 | 2001-06-27 | 康达（成都）电子有限公司 | Tunnel fire monitoring alarm device |
| CN2487051Y (en) * | 2001-05-22 | 2002-04-17 | 张陈 | Intelligent recoverable complex line type fixed temperature fire detector |
| CN2809746Y (en) * | 2005-07-12 | 2006-08-23 | 张卫社 | A flexible corrosion-resistant switching value linear heat sensitive detector |
| CN101241629A (en) * | 2008-01-16 | 2008-08-13 | 张陈 | Beyond retrievable linear temperature-sensing fire disaster detector short circuit fault and alarming method |
| CN102163359A (en) * | 2011-04-12 | 2011-08-24 | 李萍 | Linear temperature sensor with spare loop |
| CN202583393U (en) * | 2012-05-08 | 2012-12-05 | 广西达科建筑智能工程有限公司 | Low-voltage electrical fire prevention and detection apparatus |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017158508A1 (en) * | 2016-03-16 | 2017-09-21 | Dubai Electricity & Water Authority | Smart fire warning for low voltage electrical panels |
| GB2550498A (en) * | 2016-03-16 | 2017-11-22 | Dubai Electricity And Water Authority | Smart fire warning for low voltage electrical panels |
| AT520898A1 (en) * | 2016-03-16 | 2019-08-15 | Dubai Electricity & Water Authority | Intelligent fire alarm for low-voltage distribution boards |
| AT520898B1 (en) * | 2016-03-16 | 2021-04-15 | Dubai Electricity & Water Authority | Intelligent fire alarm for low-voltage distributors |
| GB2550498B (en) * | 2016-03-16 | 2021-12-01 | Dubai Electricity And Water Authority | Smart fire warning for low voltage electrical panels |
| CN110895864A (en) * | 2018-09-13 | 2020-03-20 | 开利公司 | Fire detection system tool for constraint-consistent placement of fire equipment |
| CN110895864B (en) * | 2018-09-13 | 2024-02-09 | 开利公司 | Fire detection system tool for constraint-consistent placement of fire equipment |
| CN110672962A (en) * | 2019-10-22 | 2020-01-10 | 东莞市鸿茂物联网科技有限公司 | State monitoring system for electric equipment |
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| Publication number | Publication date |
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| CN102636734B (en) | 2014-01-29 |
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Address after: 530011 Seventh and Eighth Floors of No.1 Scientific Research Business Building, Renmin Road North, Xingning District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: GUANGXI SUZHONG DAKE INTELLIGENT ENGINEERING CO.,LTD. Address before: 530011, 24 floor, Hua Lan building, 39 Huadong Road, Nanning, the Guangxi Zhuang Autonomous Region. Patentee before: GUANGXI DAKE BUILDING INTELLIGENT ENGINEERING Co.,Ltd. |
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Address after: 530031 5th floor, complex building, No. 6, Pengyun Road, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Suzhong Dake Intelligent Engineering Co.,Ltd. Address before: 530011 Seventh and Eighth Floors of No.1 Scientific Research Business Building, Renmin Road North, Xingning District, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI SUZHONG DAKE INTELLIGENT ENGINEERING Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 |