CN2591622Y - Combustable gas detector - Google Patents

Combustable gas detector Download PDF

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Publication number
CN2591622Y
CN2591622Y CN 02256504 CN02256504U CN2591622Y CN 2591622 Y CN2591622 Y CN 2591622Y CN 02256504 CN02256504 CN 02256504 CN 02256504 U CN02256504 U CN 02256504U CN 2591622 Y CN2591622 Y CN 2591622Y
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CN
China
Prior art keywords
control
combustible gas
alarm
gas probe
sensor assembly
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 02256504
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Chinese (zh)
Inventor
张林春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RAE Systems (Beijing) Co., Ltd.
Original Assignee
BEIJING KELIHENG SAFETY EQUIPMENT Co Ltd
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Filing date
Publication date
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Priority to CN 02256504 priority Critical patent/CN2591622Y/en
Application granted granted Critical
Publication of CN2591622Y publication Critical patent/CN2591622Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a combustible gas detector, which comprises a sensor module used for sensing and detecting the information of the concentration of indoor combustible gas, a control device used for receiving the information of the concentration of the combustible gas which comes from the sensor module and generating alarm information according to the information of the concentration of the combustible gas, an alarm module used for receiving the alarm information of the control device and generating alarm signals, and a shell used for installing the sensor module, the control device and an alarm device inside. The combustible gas detector is characterized in that an air inlet window of a sensor on the shell and the shell are in fission combination type, and the connection of the sensor module which is positioned in the shell near the air inlet window of the sensor and the control device is demountable.

Description

Combustible gas probe
Technical field
The utility model relates to a kind of combustible gas probe, relates more specifically to a kind of indoor combustible gas probe.
Background technology
Along with the development of society, the energy of buying clearly such as rock gas, liquefied petroleum gas (LPG) and artificial coal gas is just popularized gradually in big and medium-sized cities.Although these inflammable gass bring great convenience for people's life, also produced a problem thereupon, promptly when the combustable gas concentration of revealing acquires a certain degree, easily produce blast, bring very big threat can for people's life and property.Therefore, the safe handling to inflammable gas is subject to people's attention day by day.
In order to use inflammable gas safely, the protection person and property safety use indoor flammable gas alarm to be absolutely necessary.Occurred the different indoor fuel gas alarm of function on the current market, major part is to use the concentration of the inflammable gas in the semiconductor transducer sensing chamber.
Because traditional semiconductor transducer is non-linear big, affected by environment big, to water, cigarette reaction sensitivity, so traditional flammable gas alarm easily produces wrong report.
Existing flammable gas alarm all is that the separate single point type is reported to the police simultaneously, is not easy to the networking concentrated alarm monitoring of sub-district, building.
And because semiconductor transducer is easily affected by environment, after using a period of time, the sensor element that need more renew, sensor element and alarm are one in traditional flammable gas alarm, need the professional to change when changing sensor element, and readjust the working point of alarm, this uses traditional flammable gas alarm to bring trouble for general domestic consumer.And for the maintainer of combustible gas probe, attended operation also is very inconvenient, and the on-the-spot working point of adjusting alarm, is difficult to guarantee the consistance of combustible gas probe work.
The utility model content
A purpose of the present utility model is to provide a kind of combustible gas probe that can reliably report to the police.Another purpose of the present utility model is to provide a kind of combustible gas probe of the concentrated alarm monitoring that can realize networking.Another purpose of the present utility model is to provide a kind of combustible gas probe that can maintain easily.
The utility model combustible gas probe comprises: sensor assembly is used for the indoor gas concentration information of sensing; Control device is used to receive the gas concentration information from sensor assembly, and according to described gas concentration information, produces warning message; Alarm module is used for the warning message of receiving control device, produces alerting signal; Shell, be used for sensor assembly, control device and warning device are installed in wherein, described combustible gas probe, it is characterized in that: sensor air intake window and shell on the shell are separate assemblings, and being positioned at sensor assembly enclosure, close sensor air intake window is dismountable with being connected of control device.
Further, this combustible gas probe also comprises display device, links to each other with control device, is used to show the gas concentration value.
Further, this combustible gas probe also comprises the coding circuit that connects with described control device, is used for the bus centralized control.
Further, described sensor assembly is the carrier catalysis gas security.
Further, described sensor assembly is an inserting mode with being connected of control device.
Further, described sensor assembly also comprises memory storage, is used to write down situation, the accumulative total working time of last warning, the calibration coefficient value of demarcating concentration value, one-level alarm concentration value, secondary alarm concentration value, three grades of alarm concentration value, 24 hour zero point record, 36 months gain compensation table and sensor assembly and calibration compensation coefficient value, current zero point value and dispatching from the factory reference zero value, preset value and date of manufacture.
Further, described warning device comprises: accident warning device is used for when sensor assembly damages, lost efficacy or exceeds measurement range the output failure alarm signal; The concentration warning device is used for when detected gas concentration reaches preset value, output sound and light alarm signal, and the control signal of output control linkage.
Further, described control device also comprises: Automatic Zero Set is used for carrying out automatic zero set (AZS) when environmental change and sensor aging cause zero-error; The automatic gain compensation device when the sensor aging causes gain error, carries out automatic gain compensation.
Further, described control device also is connected with key operation device, is used to check sound and light alarm, alarm set point is set, zeroing, demarcates and access preset value; Described control device also is connected with the self check operating means, and under the normal monitoring state, can what be used to test warning device operate as normal.
Further, comprise microcontroller in the described control device, its model is MC68HC908JL3.
Description of drawings
Below by detailed description to accompanying drawing of the present utility model, feature and advantage of the present utility model will be illustrated fully, wherein:
Fig. 1 is the block diagram according to combustible gas probe of the present utility model;
Fig. 2 is a plurality of networking synoptic diagram according to combustible gas probe of the present utility model;
Fig. 3 is the utility model combustible gas probe schematic appearance;
Fig. 4 is that A-A amplifies partial sectional view among Fig. 3.
Embodiment
Below with reference to the accompanying drawings combustible gas probe of the present utility model is elaborated.
Fig. 1 is the block diagram of combustible gas probe of the present utility model.Combustible gas probe comprises sensor assembly 1, control device 2 and warning device 3.
Wherein sensor assembly 1 comprises sensor 4, amplifying circuit 5 and storer 6, and sensor 4 adopts the low-power consumption catalytic sensor, and the sensor selectivity of catalysis type is good, and is only to the combustion gas reaction, affected by environment little.The sensing signal of 5 pairs of sensors 4 of amplifying circuit amplifies, and the signal after the processing and amplifying is sent in the control device 2.Storer 6 records: last situation of reporting to the police, in order to inquire about last time of fire alarming, gas concentration value; The accumulative total working time is to guarantee that sensor uses before the deadline; Demarcate concentration value, in order to preserve the gas concentration value of demarcating last time; Whether one-level alarm concentration value, secondary alarm concentration value, three grades of alarm concentration value are in order to check the alarm set point setting; Calibration coefficient value and calibration compensation coefficient value are in order to preserve the gain situation; Current zero point the value and the reference zero value of dispatching from the factory, in order to preserve the zero point drift situation; Preset value when misoperation, can return to preset value, makes its operate as normal; 24 hour zero point record, in order to preserve 24 hours zero point drift situations; 36 months gain compensation table has write down the gain reduction situation in the sensor term of validity, shows compensating gain by this; Date of manufacture, the date of manufacture of record sensor element.The information of these records all sends control device 2 to.Therefore strengthened the memory function of detector.
Control device 2 comprises A/D converter 7, the sensing analog conversion of signals of sensor assembly 1 is become digital signal, deliver to the microcontroller 9 in the control device 2, the model of microcontroller 9 is MC68HC908JL3, microcontroller 9 sends alerting signal to warning device 3 according to the digital sensing signal after changing.
Warning device 3 is divided into accident warning device 31 and concentration warning device 32.When only the microcontroller 9 at control device detected sensor damage itself, lost efficacy or exceeds measurement range, accident warning device 31 illustrated failure alarm signal.Under normal monitoring, when gas concentration reached one-level alarm set point preset value, concentration warning device 32 output sound and light alarm signals postponed (about 60 seconds) and cut off solenoid valve, by postponing to avoid mistake to cut off; When concentration warning device 32 gas concentrations reached secondary alarm set point preset value, output sound and light alarm signal cut off solenoid valve 13 simultaneously.
Control device 2 also comprises: Automatic Zero Set 10 is used for carrying out automatic zero set (AZS) when environmental change and sensor aging cause zero-error; And automatic gain compensation device 11, when the sensor aging causes gain error, carry out automatic gain compensation.Thereby removed manually-operated from and made things convenient for maintenance again.
For the ease of the Centralized Monitoring of sub-district, building, control device also comprises coding circuit 8 in addition, by the code switch in the coding circuit 15 is encoded, makes output terminal (TC) and bus concentrate monitor controller 14 just to be connected and can realize the bus Centralized Monitoring.
Combustible gas probe can also comprise a display device 12 of being made up of two LED, is used to show sensing range 0-99%LEL.
Detector is by realizing button operation: alarm set point is set, checks sound and light alarm, zeroing, demarcation, accessing dispatches from the factory pre-sets.
Detector also has self-checking function: under the normal monitoring state, after " self check key " 3 seconds, sound and light alarm and fault alarm are arranged and cut off solenoid valve.
Fig. 2 is the networking synoptic diagram of a plurality of the utility model combustible gas probes; In Fig. 2, the combustible gas probe of a plurality of distributions and sub-district or building is connected on the concentrated monitor controller of bus by coding circuit separately, realizes the bus Centralized Monitoring.Reveal in case combustion gas takes place, bus concentrates the operator on duty of monitor controller just can know the position that combustion gas is revealed immediately, thereby takes safety measures rapidly.
As shown in Figure 3, Figure 4, this combustible gas probe housing comprises loam cake 43 and base 44 two parts, loam cake 43 respective sensor modules 4 places are provided with detachable window 41, detachable window 41 is installed on the loam cake 43 by grab 45,46,54, and wherein grab 54 is hooked on the bleeder vent 53 of loam cake 43 sides.Be provided with bleeder vent 42 simultaneously on the detachable window 41.Base 44 sides are provided with bleeder vent 51.Main circuit board 50 is fixed on the base 44, sensor assembly 4 is fixed on the wiring board 52, wiring board 52 is plugged on the socket 48 by contact pin 49, realization is electrically connected with main circuit board 50, socket 48 is fixed on main circuit board 50 surfaces, wiring board 52 is provided with the circuits such as amplifying circuit of sensor assembly 4, for guaranteeing the stable of wiring board 52, is fixed on the socket 48 by screw 47.
The enclosure designs novelty of detector, easy to assemble.Its display window is replaceable to show two kinds for band shows and is not with.Sensor air intake window and shell are separate assemblings, need not dismantle shell when changing sensor board, directly the sensor air intake window are pulled down promptly replaceable.Bonnet is detachable, and convenience is connected with external unit.Knock down hole is cabling convenient and external equipment.
Pass through above preferred embodiment, the utility model has been done detailed description, those of ordinary skills can in the scope that does not deviate from essence of the present utility model and accompanying Claim book, carry out various modifications and improvement to the utility model under the inspiration of foregoing.

Claims (10)

1. combustible gas probe, comprising: sensor assembly is used for the indoor gas concentration information of sensing; Control device is used to receive the gas concentration information from sensor assembly, and according to described gas concentration information, produces warning message; Alarm module is used for the warning message of receiving control device, produces alerting signal; Shell, be used for sensor assembly, control device and warning device are installed in wherein, described combustible gas probe, it is characterized in that, sensor air intake window and shell on the shell are separate assemblings, and being positioned at sensor assembly enclosure, close sensor air intake window is dismountable with being connected of control device.
2. combustible gas probe as claimed in claim 1 is characterized in that this combustible gas probe also comprises display device, links to each other with control device, is used to show the gas concentration value.
3. combustible gas probe as claimed in claim 1 is characterized in that, this combustible gas probe also comprises the coding circuit that connects with described control device, is used for the bus centralized control.
4. combustible gas probe as claimed in claim 1 is characterized in that, described sensor assembly is the carrier catalysis gas security.
5. combustible gas probe as claimed in claim 1 is characterized in that, described sensor assembly is an inserting mode with being connected of control device.
6. combustible gas probe as claimed in claim 1, it is characterized in that, described sensor assembly also comprises memory storage, is used to write down situation, the accumulative total working time of last warning, the calibration coefficient value of demarcating concentration value, one-level alarm concentration value, secondary alarm concentration value, three grades of alarm concentration value, 24 hour zero point record, 36 months gain compensation table and sensor assembly and calibration compensation coefficient value, current zero point value and dispatching from the factory reference zero value, preset value and date of manufacture.
7. combustible gas probe as claimed in claim 1 is characterized in that, described warning device comprises: accident warning device is used for when sensor assembly damages, lost efficacy or exceeds measurement range the output failure alarm signal; With the concentration warning device, be used for when detected gas concentration reaches preset value output sound and light alarm signal, and the control signal of output control linkage.
8. combustible gas probe as claimed in claim 1 is characterized in that, described control device also comprises: Automatic Zero Set is used for carrying out automatic zero set (AZS) when environmental change and sensor aging cause zero-error; The automatic gain compensation device when the sensor aging causes gain error, carries out automatic gain compensation.
9. combustible gas probe as claimed in claim 1 is characterized in that described control device also is connected with key operation device, is used to check sound and light alarm, alarm set point is set, zeroing, demarcates and access preset value; Described control device also is connected with the self check operating means, and under the normal monitoring state, can what be used to test warning device operate as normal.
10. combustible gas probe as claimed in claim 1 is characterized in that, comprises microcontroller in the described control device, and its model is MC68HC908JL3.
CN 02256504 2002-09-20 2002-09-20 Combustable gas detector Expired - Fee Related CN2591622Y (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102279245A (en) * 2011-06-22 2011-12-14 哈尔滨东方报警设备开发有限公司 Integrated acousto-optic warning gas detector
CN102788179A (en) * 2011-06-20 2012-11-21 北京联合大学 Novel wrong gas cut-off prevention electronic safety monitor
CN103048429A (en) * 2012-12-28 2013-04-17 重庆川仪分析仪器有限公司 Replaceable fixed type gas warner
CN103325218A (en) * 2013-05-22 2013-09-25 上海霖睿自控设备有限公司 Wireless gas alarm control system
CN103647938A (en) * 2013-11-25 2014-03-19 李军 A security and monitoring all-in-one machine and a remote monitoring system
CN103913549A (en) * 2014-04-28 2014-07-09 四川久远智能监控有限责任公司 Improved type gas detector
CN105137024A (en) * 2014-06-03 2015-12-09 江苏安泰机电科技有限公司 Combustible gas sensor
CN105355009A (en) * 2015-11-13 2016-02-24 成都秦川科技发展有限公司 Self-check system and method with linkage equipment taking no action
CN106442867A (en) * 2016-06-03 2017-02-22 李智 Combustible gas concentration detection method and detection device
CN109386740A (en) * 2017-06-26 2019-02-26 李�根 Gas probing instrument
CN109844511A (en) * 2016-11-04 2019-06-04 Msa技术有限公司 Combustible gas sensor and the method for identifying fuel gas type for the pulse operation via combustible gas sensor
CN110085002A (en) * 2019-04-20 2019-08-02 马继华 Gas pipeline detection system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102788179A (en) * 2011-06-20 2012-11-21 北京联合大学 Novel wrong gas cut-off prevention electronic safety monitor
CN102788179B (en) * 2011-06-20 2014-02-19 北京联合大学 Novel wrong gas cut-off prevention electronic safety monitor
CN102279245A (en) * 2011-06-22 2011-12-14 哈尔滨东方报警设备开发有限公司 Integrated acousto-optic warning gas detector
CN102279245B (en) * 2011-06-22 2014-12-24 哈尔滨东方报警设备开发有限公司 Integrated acousto-optic warning gas detector
CN103048429A (en) * 2012-12-28 2013-04-17 重庆川仪分析仪器有限公司 Replaceable fixed type gas warner
CN103325218A (en) * 2013-05-22 2013-09-25 上海霖睿自控设备有限公司 Wireless gas alarm control system
CN103647938A (en) * 2013-11-25 2014-03-19 李军 A security and monitoring all-in-one machine and a remote monitoring system
CN103913549A (en) * 2014-04-28 2014-07-09 四川久远智能监控有限责任公司 Improved type gas detector
CN103913549B (en) * 2014-04-28 2016-01-13 四川久远智能监控有限责任公司 A kind of improved gas detector
CN105137024A (en) * 2014-06-03 2015-12-09 江苏安泰机电科技有限公司 Combustible gas sensor
CN105355009A (en) * 2015-11-13 2016-02-24 成都秦川科技发展有限公司 Self-check system and method with linkage equipment taking no action
CN106442867A (en) * 2016-06-03 2017-02-22 李智 Combustible gas concentration detection method and detection device
CN109844511A (en) * 2016-11-04 2019-06-04 Msa技术有限公司 Combustible gas sensor and the method for identifying fuel gas type for the pulse operation via combustible gas sensor
CN109386740A (en) * 2017-06-26 2019-02-26 李�根 Gas probing instrument
CN109915735A (en) * 2017-06-26 2019-06-21 李�根 Survey meter
CN109386740B (en) * 2017-06-26 2020-11-06 赵新建 Natural gas detector
CN109915735B (en) * 2017-06-26 2020-11-13 海安迪斯凯瑞探测仪器有限公司 Detecting instrument
CN110085002A (en) * 2019-04-20 2019-08-02 马继华 Gas pipeline detection system

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C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: HUARUI KELIHENG( BEIJING ) SCIENCE CO., LTD.

Free format text: FORMER OWNER: BEIJING KELIHENG SAFETY EQUIPMENT CO., LTD.

Effective date: 20040827

TR01 Transfer of patent right

Effective date of registration: 20040827

Address after: 100044, No. 20, West Road, Haidian District, Beijing

Patentee after: RAE Systems (Beijing) Co., Ltd.

Address before: 100044, No. 20, West Road, Haidian District, Beijing

Patentee before: Beijing Keliheng Safety Equipment Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: HUARUIKELIHENG BUILDING, NO. 7, YONGFENGCHANYEJIDI

Free format text: FORMER NAME OR ADDRESS: NO. 20, JIA, CHEGONGZHUANG ROAD(WEST), HAIDIAN DISTRICT, BEIJING CITY, 100044

CP03 Change of name, title or address

Address of the patentee after: 100094 Beijing city Haidian District industrial base in Yongfeng Feng Xian Road No. 7 Building Rae systems

Address of the patentee before: 100044, No. 20, West Road, Haidian District, Beijing

C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee