CN201765663U - Combustible gas detecting system - Google Patents

Combustible gas detecting system Download PDF

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Publication number
CN201765663U
CN201765663U CN2010205084443U CN201020508444U CN201765663U CN 201765663 U CN201765663 U CN 201765663U CN 2010205084443 U CN2010205084443 U CN 2010205084443U CN 201020508444 U CN201020508444 U CN 201020508444U CN 201765663 U CN201765663 U CN 201765663U
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CN
China
Prior art keywords
combustible gas
air
air sampling
detecting
pipe
Prior art date
Application number
CN2010205084443U
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Chinese (zh)
Inventor
徐纯烈
毛成洲
张琦
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东北电网有限公司大连培训中心
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Priority to CN2010205084443U priority Critical patent/CN201765663U/en
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Publication of CN201765663U publication Critical patent/CN201765663U/en

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Abstract

The utility model provides a combustible gas detecting system which belongs to the technical field of fire disaster detection alarm. The combustible gas detecting system detecting combustible gas generated in the extremely early period mainly comprises an air sampling pipe net, an air flow sensor, a combustible gas detector, an electronic control unit and a sampling pump. The sampling pump extracts an air sample from the air sampling pipe net, the air flow sensor and the combustible gas detector detect a signal of combustible gas, and the electronic control unit carries out remote display, acousto-optic alarm and control after carrying out processing of the signal. An air sampling hose can be conveniently arranged at the inner part of a machine cabinet or a machine which needs to be detected. The active air extraction type detecting system can convey the combustible gas which is generated in the early period into a sensing chamber, so that the precision of the detector reaches 0.01%; as all electronic components are integrated in a machine shell of the detector, the interference resisting capability is strong, the performance is reliable, and the installation and maintenance are convenient; therefore, the combustible gas detecting system is suitable for being used in not only large-area, high-air-flow and high-cleanness places such as a communication machine room, a computer room, a clean room and the like, but also a cable tunnel, a power plant, a bank, an archive and the like.

Description

A kind of combustible gas detecting system
Technical field
The utility model relates to a kind of combustible gas detecting system, and it belongs to fire detection alarm technique field.
Background technology
Combustible gas probe is widely used in the place of distributing inflammable gas, combustible vapor.Be applicable to that the place that refinery, oil depot, liquefied gas station, gas station, refuelling station, paint spray booth, family etc. distribute inflammable gas, combustible vapor carries out the gas leakage alarm.When the combustable gas concentration in being detected the zone reached alarm setting value, detector sent sound, visual alarm immediately, early took safety measures to remind promptly, prevented blast, fire failure, thereby ensured security against fire.Combustible gas probe is to install and use in industry and the covil construction, and single or multiple combustable gas concentration is sent the detector of response.The maximum combustible gas probe of daily use is two types of catalytic type combustible gas probe and semi-conductor type combustible gas probes.Existing combustible gas detecting system range of adjustment is less than normal, and can't adapt to different applied environments also is a big defective of conventional port combustible gas probe.Passive collection inflammable gas sample, very easily be subjected to air-conditioning and other factor affecting, wait for that passively inflammable gas slowly is diffused near it, could report to the police, and the particular surroundings that becomes the distribution machine room will produce multiple adverse influence to combustible gas detecting, causes to incur loss through delay even fail to report.The detector setting is single, can't satisfy the requirement of particular surroundings in the machine room.In the middle of machine room, the safety of being not only building environment that we are concerned about, what we more were concerned about is the interior electric power facility of machine room, underfloor cable, the safety of the Various types of data that preserve the Office Area, this just requires panalarm can have mounting means more flexibly, such as can be as required, directly sampling pipe is installed in equipment casing inside, cable testing bridge is when medium.The probe of tradition combustible gas probe needs charging operation, and is subject to electromagnetic interference (EMI), has the possibility of hidden danger and wrong report.In sum, in today that power industry develops on an unprecedented scale, safety as the change distribution machine room of entire city electric power system heart becomes important all the more, and very disproportionate therewith be that traditional fire alarm is because the limitation of himself can not satisfy the requirement that the machine room fire is taken precautions against far away.So from safety truly, power industry is badly in need of a kind of complete function, dependable performance is easy to maintenance, can be in the combustible gas detecting system that can find and give the alarm in early days that fire takes place.
Summary of the invention
The purpose of this utility model provides a kind of combustible gas detecting system, it is at the existing problems described in the background technology, develop the complete function that a kind of power industry is badly in need of, dependable performance, easy to maintenance, early detection that can take place at fire and the fire combustible gas detecting of new generation system that gives the alarm.
The technical solution of the utility model is: a kind of combustible gas detecting system, and it mainly comprises air sampling pipe network, combustible gas probe and sampling pump, sampling pump detects inflammable gas from air sampling pipe network extracting air sample through combustible gas probe.It also comprises pneumatic sensor and electronic control unit, and pneumatic sensor is arranged on before the described combustible gas probe, and the detection signal of pneumatic sensor and combustible gas probe sends steering order after electronic control unit is handled; Described air sampling pipe network comprises air sampling tube and air sampling flexible pipe, and the air sampling flexible pipe is connected on the air sampling tube through solenoid valve; Described combustible gas probe and electronic control unit are integrated into a module.
Described air sampling tube is provided with at least one air sampling mouth, and its pipe end is provided with pipe plug, and the air sampling mouth is provided with the air filtration pad pasting.
Described air sampling flexible pipe is provided with at least one air hose thief hatch, and its pipe end is provided with the flexible pipe pipe plug, and the air hose thief hatch is provided with the air filtration pad pasting.
Described air sampling flexible pipe is arranged on rack inside or the machine intimate that needs detection.
Described combustible gas probe adopts semi-conductor type combustible gas probe or catalytic type combustible gas probe.
Described electronic control unit mainly is made up of input circuit, A/D converter, microcomputer and output circuit, the simulating signal of described pneumatic sensor and combustible gas probe is converted to binary signal input microcomputer through input circuit by A/D converter, and last output circuit is decision signal input sound light alarming circuit, long-range display circuit or the solenoid valve control circuit of microcomputer output.
The beneficial effects of the utility model are: this a kind of combustible gas detecting system mainly comprises air sampling pipe network, pneumatic sensor, combustible gas probe, electronic control unit and sampling pump, sampling pump is from air sampling pipe network extracting air sample, and the signal that is detected inflammable gas by pneumatic sensor and combustible gas probe carries out long-range demonstration, sound and light alarm and control after electronic control unit is handled.The air sampling flexible pipe can be arranged on rack inside or the machine intimate that needs detection easily.It is indoor that this active bleeder detection system can enter the inflammable gas that produces at first sensing, the precision of detector has reached 0.01%, all electronic devices and components all are integrated in the casing of detector, antijamming capability is strong, dependable performance, convenient for installation and maintenance, be applicable to large tracts of land such as communications equipment room, computer house, toilet, high gas flow, high clean place, cable tunnel, generating plant, bank and archives etc.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a kind of combustible gas detecting system diagram.
Fig. 2 is an electronic control unit principle of work block diagram.
Among the figure: 1, air sampling tube, 1a, pipe plug, 1b, air sampling mouth, 2, the air filtration pad pasting, 3, pneumatic sensor, 4, combustible gas probe, 4a, metal platinum Silk, 5, electronic control unit, 5a, input circuit, 5b, A/D converter, 5c, microcomputer, 5d, output circuit, 6, sampling pump, 7, the air sampling flexible pipe, 7a, flexible pipe pipe plug, 7b, air hose thief hatch, 8, solenoid valve, 9, sound light alarming circuit, 10, long-range display circuit, 11, solenoid valve control circuit, 12, the ventilation blower control circuit.
Embodiment
Fig. 1 shows a kind of combustible gas detecting system.Among the figure, this combustible gas detecting system mainly comprises air sampling tube 1(PVC hard tube), air sampling flexible pipe 7(PVC flexible pipe), pneumatic sensor 3, combustible gas probe 4, electronic control unit 5 and sampling pump 6.Each air sampling tube 1 is provided with 5 air sampling mouth 1b, and its pipe end is provided with pipe plug 1a, and air sampling mouth 1b is provided with air filtration pad pasting 2.Air sampling flexible pipe 7 is provided with an air hose thief hatch 7b, and its pipe end is provided with flexible pipe pipe plug 7a, and air hose thief hatch 7b is provided with air filtration pad pasting 2.Air sampling flexible pipe 7 can be arranged on rack inside or the machine intimate that needs detection easily.Air sampling flexible pipe 7 is connected on the air sampling tube 1 through solenoid valve 8.Combustible gas probe 4 adopts the catalytic type combustible gas probe, and combustible gas probe 4 and electronic control unit 5 are integrated into a module.Sampling pump 6 is from air sampling pipe network extracting air sample, and the signal that is detected inflammable gas by combustible gas probe 4 sends steering order after electronic control unit 5 is handled.
Fig. 2 shows electronic control unit principle of work block diagram.The catalytic type combustible gas probe adopts metal platinum Silk4a is detecting element and fixed resistance and zero potentiometer formation detection bridge circuit.Bridge circuit is with platinum SilkBe carrier catalyst element, energising back platinum filament temperature rises to working temperature, and air arrives element surface in the suction mode.When in the air during no inflammable gas, bridge circuit is output as zero, when containing inflammable gas in the air and arrive on the detecting element, because catalytic action produces flameless burning, the detecting element temperature is raise, platinum filament resistance increases, make the bridge circuit out of trim, thereby voltage signal output is arranged, and the size of this voltage is directly proportional with inflammable gas concentration, and signal is imported electronic control unit 5 after amplifying.Electronic control unit 5 mainly is made up of input circuit 5a, A/D converter 5b, microcomputer 5c and output circuit 5d.The simulating signal of pneumatic sensor 3 and combustible gas probe 4 is converted to binary signal input microcomputer 5c through input circuit 5a by A/D converter 5b, and last output circuit 5d is decision signal input sound light alarming circuit 9, long-range display circuit 10, solenoid valve control circuit 11 or the ventilation blower control circuit 12 of microcomputer 5c output.Microcomputer 5c mainly is made up of central processing unit (CPU), storer (RAM, ROM) and input, delivery outlet parts such as (I/O).
Above-mentioned combustible gas detecting system is work like this:
1, nominal situation
Sampling pump 6 operations, no acousto-optic is reported to the police, and far distance instrument shows operational factor, and is printable, solenoid valve 8 standard-sized sheets, ventilation blower complete shut-down.
2, warning operating mode
Sampling pump 6 operations have sound and light alarm, and far distance instrument shows operational factor, and is printable; Electronic control unit 5 automatically in turn one of control electromagnetic valve 8 close, whether all the other solenoid valve 8 standard-sized sheets so that find out rack inside or there is hidden danger in machine intimate.If got rid of rack inside or there is hidden danger in machine intimate, should find out the reason of warning as early as possible and open ventilation blower up to alarm release.Whether pneumatic sensor 3 is used to detect sampling pipe network and exists fracture defect or air filtration pad pasting 2 because of crossing dirty resulting in blockage.

Claims (6)

1. combustible gas detecting system, it mainly comprises air sampling pipe network, combustible gas probe (4) and sampling pump (6), sampling pump (6) detects inflammable gas from air sampling pipe network extracting air sample through combustible gas probe (4); It is characterized in that: it also comprises pneumatic sensor (3) and electronic control unit (5), pneumatic sensor (3) is arranged on described combustible gas probe (4) before, and the detection signal of pneumatic sensor (3) and combustible gas probe (4) sends steering order after electronic control unit (5) is handled; Described air sampling pipe network comprises air sampling tube (1) and air sampling flexible pipe (7), and air sampling flexible pipe (7) is connected on the air sampling tube (1) through solenoid valve (8); Described combustible gas probe (4) and electronic control unit (5) are integrated into a module.
2. a kind of combustible gas detecting according to claim 1 system, it is characterized in that: described air sampling tube (1) is provided with at least one air sampling mouth (1b), its pipe end is provided with pipe plug (1a), and air sampling mouth (1b) is provided with air filtration pad pasting (2).
3. a kind of combustible gas detecting according to claim 1 system, it is characterized in that: described air sampling flexible pipe (7) is provided with at least one air hose thief hatch (7b), its pipe end is provided with flexible pipe pipe plug (7a), and air hose thief hatch (7b) is provided with air filtration pad pasting (2).
4. a kind of combustible gas detecting according to claim 3 system, it is characterized in that: described air sampling flexible pipe (7) is arranged on rack inside or the machine intimate that needs detect.
5. a kind of combustible gas detecting according to claim 1 system, it is characterized in that: described combustible gas probe (4) adopts semi-conductor type combustible gas probe or catalytic type combustible gas probe.
6. a kind of combustible gas detecting according to claim 1 system, it is characterized in that: described electronic control unit (5) is mainly by input circuit (5a), A/D converter (5b), microcomputer (5c) and output circuit (5d) are formed, the simulating signal of described pneumatic sensor (3) and combustible gas probe (4) is converted to binary signal input microcomputer (5c) through input circuit (5a) by A/D converter (5b), and last output circuit (5d) is the decision signal input sound light alarming circuit (9) of microcomputer (5c) output, long-range display circuit (10), solenoid valve control circuit (11) or ventilation blower control circuit (12).
CN2010205084443U 2010-08-28 2010-08-28 Combustible gas detecting system CN201765663U (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338796A (en) * 2011-07-26 2012-02-01 中国神华能源股份有限公司 Equipment for detecting concentration of combustible gas in silo
CN102749227A (en) * 2012-07-17 2012-10-24 西华大学 In-cylinder sampling system and method for internal combustion engine
CN103389230A (en) * 2013-07-22 2013-11-13 中国人民解放军后勤工程学院 Novel sampling and monitoring system for open space oil material fire pollution
CN104318721A (en) * 2014-10-22 2015-01-28 中山欧麦克仪器设备有限公司 Methane leakage sound-light alarm and self-venting machine
CN104330286A (en) * 2014-10-22 2015-02-04 中国石油化工股份有限公司 Oil-gas concentration sampling detection device for external floating roof storage tank and sampling detection method of oil-gas concentration sampling detection device
CN104792962A (en) * 2015-03-19 2015-07-22 中国石油化工股份有限公司 Wireless monitoring device for concentration of flammable gas inside sealing ring of outer floating roof storage tank
CN106153402A (en) * 2016-06-15 2016-11-23 安徽省绿巨人环境技术有限公司 A kind of air sampling rig based on air accumulator
CN106442646A (en) * 2016-11-30 2017-02-22 李晓博 Safety inspection device for inhalable combustible and explosive liquid
CN107331102A (en) * 2017-08-30 2017-11-07 国网安徽省电力公司电力科学研究院 Intelligent concentration suction-type cable fire pole early warning device and method
CN108230627A (en) * 2018-02-13 2018-06-29 东莞三江港口储罐有限公司 A kind of combustible gas monitoring system for oil depot
CN111311881A (en) * 2020-02-28 2020-06-19 北京航星网讯技术股份有限公司 Gas alarm device with function of reminding user of replacing dust cover

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102338796A (en) * 2011-07-26 2012-02-01 中国神华能源股份有限公司 Equipment for detecting concentration of combustible gas in silo
CN102338796B (en) * 2011-07-26 2014-05-07 中国神华能源股份有限公司 Equipment for detecting concentration of combustible gas in silo
CN102749227A (en) * 2012-07-17 2012-10-24 西华大学 In-cylinder sampling system and method for internal combustion engine
CN103389230A (en) * 2013-07-22 2013-11-13 中国人民解放军后勤工程学院 Novel sampling and monitoring system for open space oil material fire pollution
CN103389230B (en) * 2013-07-22 2016-08-10 中国人民解放军后勤工程学院 A kind of Novel open space oil plant fire contamination sampling monitoring system
CN104330286A (en) * 2014-10-22 2015-02-04 中国石油化工股份有限公司 Oil-gas concentration sampling detection device for external floating roof storage tank and sampling detection method of oil-gas concentration sampling detection device
CN104318721A (en) * 2014-10-22 2015-01-28 中山欧麦克仪器设备有限公司 Methane leakage sound-light alarm and self-venting machine
CN104792962A (en) * 2015-03-19 2015-07-22 中国石油化工股份有限公司 Wireless monitoring device for concentration of flammable gas inside sealing ring of outer floating roof storage tank
CN106153402A (en) * 2016-06-15 2016-11-23 安徽省绿巨人环境技术有限公司 A kind of air sampling rig based on air accumulator
CN106442646A (en) * 2016-11-30 2017-02-22 李晓博 Safety inspection device for inhalable combustible and explosive liquid
CN107331102A (en) * 2017-08-30 2017-11-07 国网安徽省电力公司电力科学研究院 Intelligent concentration suction-type cable fire pole early warning device and method
CN108230627A (en) * 2018-02-13 2018-06-29 东莞三江港口储罐有限公司 A kind of combustible gas monitoring system for oil depot
CN108230627B (en) * 2018-02-13 2020-06-05 东莞三江港口储罐有限公司 Combustible gas monitoring system for oil depot
CN111311881A (en) * 2020-02-28 2020-06-19 北京航星网讯技术股份有限公司 Gas alarm device with function of reminding user of replacing dust cover

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C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20121016

Address after: 116023 No. 1 Ling Xi Road, Ganjingzi District, Liaoning, Dalian

Patentee after: Liaoning Electric Power Co., Ltd. Dalian Training Center

Patentee after: Liaoning Electric Power Company Limited

Patentee after: State Grid Corporation of China

Address before: 116023 No. 1 Ling Xi Road, hi tech park, Liaoning, Dalian

Patentee before: Northeast China Grid Company Dalian Training Center

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: LIAONING ELECTRIC POWER CO., LTD. STATE ELECTRIC N

Effective date: 20121016

Owner name: DALIAN TRANING CENTER OF LIAONING ELECTRIC POWER C

Free format text: FORMER OWNER: DALIAN WELDER TRAINING CENTER OF NORTHEAST CHINA GRID CO., LTD.

Effective date: 20121016

EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110316

Termination date: 20150828