CN105842405B - A kind of gas concentration detector and its control method - Google Patents
A kind of gas concentration detector and its control method Download PDFInfo
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- CN105842405B CN105842405B CN201610329814.9A CN201610329814A CN105842405B CN 105842405 B CN105842405 B CN 105842405B CN 201610329814 A CN201610329814 A CN 201610329814A CN 105842405 B CN105842405 B CN 105842405B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 368
- 238000001514 detection method Methods 0.000 claims abstract description 75
- 230000008054 signal transmission Effects 0.000 claims abstract description 69
- 238000012544 monitoring process Methods 0.000 claims abstract description 65
- 238000007689 inspection Methods 0.000 claims abstract description 39
- 238000007781 pre-processing Methods 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 230000006870 function Effects 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000012795 verification Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 14
- 230000003993 interaction Effects 0.000 claims description 14
- 238000012937 correction Methods 0.000 claims description 12
- 239000002341 toxic gas Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 10
- 238000007405 data analysis Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims 2
- 238000001035 drying Methods 0.000 claims 1
- 230000002452 interceptive effect Effects 0.000 claims 1
- 231100000614 poison Toxicity 0.000 claims 1
- 230000007096 poisonous effect Effects 0.000 claims 1
- 238000004886 process control Methods 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 22
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
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- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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- 239000005416 organic matter Substances 0.000 description 1
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- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0057—Warfare agents or explosives
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0047—Organic compounds
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The present invention relates to gas safety detection equipment technical field more particularly to a kind of gas concentration detector and its control methods.Gas concentration detector includes gas-monitoring hardware system, signal transmission module and control system, control system monitors system with gas hardware by signal transmission module and connect, to control gas-monitoring hardware system and receive the data information from gas-monitoring hardware system, gas-monitoring hardware system includes：Gas collecting module, gas preprocessing module, drain module, power plant module and gas detection module；Control system includes：Circuit control module and upper computer module.The gas concentration detector can select monitoring point according to actual needs, gas concentration in real time on-line monitoring inspection shaft, with intellegent sampling, aqueous vapor separation, flow monitoring control and drain function, multiple gases concentration can be monitored simultaneously, whether real-time judge gas pipeline leaks.
Description
Technical field
The present invention relates to gas safety detection equipment technical field more particularly to a kind of gas concentration detector and its controls
Method.
Background technology
It is typically soil layer around underground gas pipeline after combustion gas is leaked out from Gas Pipe by soil layer to expand
It is scattered in the space of surrounding.Natural gas leaking caused by pipeline crack will not generally form the jet-stream wind of high pressure, and reveal
Combustion gas can be diffused into adjacent pipeline, and accumulate and then progressively reach explosion limit in the duct, thus should intentinonally under
The detection of gas in pipelines concentration.
Current pipeline all uses well lid to close, and is isopiestic state in pipeline, and combustion gas can be spread in pipeline to both ends, by
Well head is gradually reached, build up and continues to spread forward.
In view of if the performance of the complexity and sensor of monitoring point arrangement is applied by sensor arrangement in-line
Work difficulty is big, and sensor is easy by water logging, and especially in sewage and storm sewer, the maintenance difficulties of sensor are also larger.
Usually monitoring point is arranged in inspection shaft at present.But in inspection shaft on the one hand fuel gas rots to produce from organic matter in well simultaneously
It is raw, mainly methane；On the other hand it is generated from gas leakage, including methane and ethane, therefore, it is necessary to monitor simultaneously
Methane gas and ethane gas are just capable of determining whether it is to have gas pipeline that gas leakage occurs.
Gas detecting instrument is a kind of instrument and meter tool of gas leakage Concentration Testing, can be divided to divide according to occupation mode
For portable and two kinds of hand-held, infrared gas detector, the inspection of pyromagnetic gas can be divided into divide according to the principle of sensor
Survey instrument, electrochemical gas detector, semiconductor-type gas detector and ultraviolet light gas detecting instrument etc..
These concentration monitors have its advantage, but there is also permitted all disadvantages.Such as Patent No. ZL200420049717.7
Patent in disclose a kind of natural gas leaking situation at inspection shaft and monitored in real time and upload the monitoring system of leakage information
System, but alarm need to be mounted in inspection shaft, since itself does not have power supply in inspection shaft, cause the power supply of alarm difficult and signal
Transmission is difficult, and is likely to, by water submerged, alarm be caused to be scrapped in heavy rain alarm device.Therefore, to all combustion gas
When pipeline is monitored, need to excavate paving line to solve the problems, such as power supply and signal transmission, in actual installation to road large area
The expense of operation is very high and difficult to realize in the process.One kind is disclosed in the patent of Patent No. ZL200920252054.1
Aspiration gas detecting system, but the system is not related to not for the gas ductwork leak detection based on detecting inspection shaft
And signal transfer functions, it can not constitute and the system monitored on-line is leaked to burning line in a large area.The patent No.
To disclose a kind of fuel gas multiple spot on-line monitoring based on wireless sensor network in the patent of ZL201010587425.9
System is not related to sample the gas in inspection shaft in the system, and in the gas leakage detecting system based on inspection shaft such as
What carries out gas the key point that sampling is detecting system.
In addition most detectors does not have the function of monitoring in real time.
Defect in view of the aforementioned technical background, the present invention provides a kind of gas concentration detector and its control methods.
Invention content
(1) technical problems to be solved
The technical problem to be solved in the present invention is to provide a kind of gas concentration detector and its control methods, being capable of basis
It is actually needed and selectes monitoring point, gas concentration in real time on-line monitoring inspection shaft.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of gas concentration detectors, including gas-monitoring hardware
System, signal transmission module and control system, the control system are connected by signal transmission module and gas-monitoring hardware system
It connects, to control the gas-monitoring hardware system and receive the data information from the gas-monitoring hardware system, the gas
Body monitors hardware system：
Gas collecting module includes the gas collecting channel of solenoid valve and multi-channel parallel, each gas collecting channel
Gas can be acquired from each inspection shaft respectively, and each gas collecting channel is connected to the solenoid valve；
Gas preprocessing module includes the gas treatment channel with the gas collecting block coupled in series, the gas treatment
Channel is parallel with drain module by least one moisture separator；
Power plant module provides power for the gas flowing in gas concentration detector described in this；
Gas detection module, and the gas treatment Tandem for the gas after detaching aqueous vapor toxic have
Evil gas concentration detection, and the gas data information detected is transferred to the control system.
Further, the inlet end in the gas collecting channel is equipped with gas sampling assembly, the gas sampling assembly pair
It should be set in the inspection shaft, filtering is additionally provided on the gas collecting channel between the gas sampling assembly and solenoid valve
Ball.
Further, the moisture separator on the gas treatment channel is three, between three moisture separators
It is also in series with the first vapor sensor respectively；And the water export of three moisture separators is distinguished and is drained described in parallel communication
The water inlet of module.
Further, the drain module includes the second vapor sensor and draining pump of serial communication, second water
Gas sensor is connected to by check-valves with the water export of moisture separator, and the draining pump is communicated with discharge outlet.
Further, the gas preprocessing module further includes drier, one end of the drier by check-valves with
The gas vent of the moisture separator is connected to, power plant module described in other end serial communication.
Further, the power plant module includes aspiration pump, the both ends of the aspiration pump respectively with gas preprocessing module
It is connected to gas detection module.
Further, the gas detection module includes two detection branch in parallel, two detection branch difference
It is connected in series with the power plant module by threeway, wherein a detection branch is connected in series with spinner flowmeter, flammable/to have
Poison gas body sensor, electronic flowmeter and exhaust outlet, another detection branch are connected to by pipeline with the exhaust outlet；Institute
Combustible/toxic gas sensor is stated with the signal transceiver of signal transmission module to couple.
Further, the control system includes：
Circuit control module, respectively with the gas collecting module, gas preprocessing module, drain module, gas detection
Module and signal transmission module connection；
Upper computer module is coupled by the signal transmission module with circuit control module.
Further, the circuit control module includes control module hardware and control module software；
The control module hardware includes circuit control panel, the circuit control panel respectively with the gas collecting module,
Gas preprocessing module, drain module, gas detection module and signal transmission module connection；
The control module software includes software section and control circuit；
The software section includes in the equipment remote control module coupled respectively with the signal transmission module and communication
The heart；
The control circuit includes the gas-monitoring module coupled respectively with the signal transmission module, draining control mould
Block, correction verification module and self-protection module, the gas-monitoring module include gas collecting control module, gas treatment control mould
Control module is surveyed in the gentle physical examination of block, and control module is surveyed in the gentle physical examination of the gas collecting control module, gas treatment control module
Couple respectively with gas collecting module, gas preprocessing module and gas detection module；The draining control module and the row
Water module couples；The self-protection module includes time calibration module, anti-theft module, lightning-protection module, rain-proof module and dust-proof
Module；
The upper computer module includes the data read module being coupled to each other, data display memory module, data analysis mould
Block and human-computer interaction interface, the data read module is coupled by signal transmission module with gas-monitoring hardware system, described
Human-computer interaction interface couples with the equipment remote control module；The human-computer interaction interface is also associated with warning function module,
The warning function module couples with self-protection module.
The present invention also provides the control methods of gas concentration detector as described above, which is characterized in that including following
Step：
Acquire the gas in each inspection shaft respectively by the gas collecting channel of multi-channel parallel；
Gas-water separation pretreatment is carried out to the gas of acquisition by gas preprocessing module；
The pretreated gas is detected by gas detection module, the data to obtain the gas are believed
Breath；
By the data information of gas described in control system analysis, to judge whether gas pipeline leaks；
The judging result is shown by the control system, and the gas collecting mould is adjusted according to the judging result
Block, gas preprocessing module and gas detection module.
(3) advantageous effect
The above-mentioned technical proposal of the present invention has the advantages that：The gas concentration detector of the present invention includes mutually interconnecting
Logical gas-monitoring hardware system, signal transmission module and control system, control system are hard with gas by signal transmission module
Part monitors system connection, to control gas-monitoring hardware system and receive the data information from gas-monitoring hardware system, gas
Body monitors hardware system：Gas collecting module, gas preprocessing module, drain module, power plant module and gas detection mould
Block；Control system includes：Circuit control module and upper computer module.The gas concentration detector can be selected according to actual needs
Monitoring point, gas concentration in real time on-line monitoring inspection shaft can detect multiple gases, if any needle by the modes such as catalysis, infrared
The harmful gas concentrations such as methane, ethane, H2S and CO are detected while to property, and there is intellegent sampling, aqueous vapor separation, flow monitoring
Control, drain function, and there is remote control function, the methane gas and ethane gas concentration in inspection shaft, energy can be monitored simultaneously
Whether real-time judge has gas pipeline, and there is a situation where leak to occur；It, can be with by the way that one or more levels moisture separator is arranged
Ensure to efficiently separate the moisture under test gas, effectively avoids in gas moisture very high and gas test component is caused to damage
It is bad, it can be with the effective protection gas concentration detector.
Description of the drawings
Fig. 1 is the block schematic illustration of the gas detection hardware system of the gas concentration detector of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the gas detection hardware system of the gas concentration detector of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram in the gas collecting channel of the embodiment of the present invention；
Fig. 4 is the block schematic illustration of the control module hardware of the embodiment of the present invention；
Fig. 5 is the block schematic illustration of the control module software of the embodiment of the present invention；
Fig. 6 is the block schematic illustration of the control circuit of the embodiment of the present invention；
Fig. 7 is the block schematic illustration of the upper computer module of the embodiment of the present invention；
Fig. 8 is the signal transmission frame diagram of the control system of the embodiment of the present invention；
Fig. 9 is the circuit control frame diagram of the circuit control module of the embodiment of the present invention.
Reference numeral in above each attached drawing is as follows：
100, gas collecting module；200, gas preprocessing module；300, power plant module；400, drain module；500, gas
Body detection module；600, signal transmission module；
1, solenoid valve；1-1, gas sampling assembly；1-2, filter ball；2, the 3,4, first vapor sensor；5, the second aqueous vapor
Sensor；6,7,8, moisture separator；9,10,11, check-valves；12, drier；13, aspiration pump；14, draining pump；15, rotor
Flowmeter；16, combustible/toxic gas sensor；17, electronic flowmeter；18, signal transceiver；19, threeway；20, discharge outlet；
21, exhaust outlet；22, explosion-proof tank；
700, circuit control module；710, circuit control panel；720, power supply；730, software section；731, equipment is remotely controlled
Molding block；732, communication center；740, control circuit；741, gas-monitoring module；741-1, gas collecting control module；741-
2, gas treatment control module；741-3, gas detection control module；742, control module is drained；743, correction verification module；744、
Self-protection module；744-1, time calibration module；744-2, anti-theft module；744-3, lightning-protection module；744-4, rain-proof module；
744-5, dustproof module；
800, upper computer module；810, data read module；820, data show memory module；830, data analysis mould
Block；840, human-computer interaction interface；841, warning function module.
Specific implementation mode
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for
Illustrate the present invention, but cannot be used for limiting the scope of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.Term "upper",
The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or
Imply relative importance.
Gas concentration detector provided in this embodiment includes gas-monitoring hardware system, signal transmission module 600 and control
System processed, the control system is connect by signal transmission module 600 with gas-monitoring hardware system, hard to control gas-monitoring
Part system simultaneously receives the data information from gas-monitoring hardware system, and in the present embodiment, gas-monitoring hardware system includes：Gas
Body acquisition module 100, gas preprocessing module 200, power plant module 300, drain module 400 and gas detection module 500, the gas
Bulk concentration detector can select monitoring point according to actual needs, and there is gas concentration in real time on-line monitoring inspection shaft intelligence to adopt
Sample, aqueous vapor separation, flow monitoring control, drain function, and there is remote control function, the methane gas in inspection shaft can be monitored simultaneously
Whether the concentration of body and ethane gas and other a variety of flammable/toxic gases, energy real-time judge have gas pipeline to leak
It happens.
The structure of the gas-monitoring hardware system of the present embodiment is as depicted in figs. 1 and 2, and gas collecting module 100 includes electricity
The gas collecting channel of magnet valve 1 and multi-channel parallel, each gas collecting channel can acquire gas from corresponding each inspection shaft respectively
Body, and each gas collecting channel is connected to solenoid valve 1, and each gas collecting channel can be controlled respectively by solenoid valve 1
Opening and closing, so as to according to actual needs select monitoring point, control be arranged the monitoring point gas collecting channel acquire gas
Body.
In order to ensure gas can evenly and rapidly enter gas preprocessing module 200 by the gas collecting channel of multi-channel parallel
In, preferably the gas collecting channel of multi-channel parallel is connected to by air inlet with the inlet end of gas preprocessing module 200；Gas
The structure of acquisition channel is as shown in figure 3, the inlet end in gas collecting channel is equipped with gas sampling assembly 1-1, gas sampling assembly
1-1 is correspondingly arranged in inspection shaft, so that the gas at this in inspection shaft enters gas collecting channel via gas sampling assembly 1-1
In, it is additionally provided with filter ball 1-2 on the gas collecting channel between gas sampling assembly 1-1 and solenoid valve 1, is adopted with preliminary filtering
The gas collected；It is preferred that the inlet end of gas sampling assembly 1-1 is set in inspection shaft, by the inlet end of gas sampling assembly 1-1
It is respectively placed in the top for the inspection shaft for needing to monitor, and filter screen is set on the inlet end of gas sampling assembly 1-1, is asked with filtering
1-2 cooperations acquire and filter the toxic and harmful gas in inspection shaft.
In the present embodiment, gas preprocessing module 200 is for pre-processing the gas in collected inspection shaft, preferably
It is connected to by pipeline between gas preprocessing module 200 and gas collecting module 100.The gas preprocessing module 200 include with
The gas treatment channel of gas collecting block coupled in series, gas treatment channel are parallel with by least one moisture separator 6,7,8
Drain module 400.
In the present embodiment, preferably set on gas treatment channel there are three moisture separator 6,7,8, three moisture separators 6,
7, the first vapor sensor 2,3,4 is also in series between 8 respectively, i.e. three moisture separators 6,7,8 and three the first aqueous vapors pass
It 2,3,4 serial communication of sensor and is arranged alternately, with the water in gas that sequentially gradually induction passes through three moisture separators 6,7,8
Divide content；The water inlet of the water export difference parallel communication drain module 400 of three moisture separators 6,7,8.
For the ease of the liquid water isolated can smooth discharge, in the present embodiment, drain module 400 includes serial communication
Second vapor sensor 5 and draining pump 14, the second vapor sensor 5 is for monitoring whether moisture trap 6,7,8 is drained
And detection displacement, the second vapor sensor 5 are connected to by check-valves 9,10 with the water export of moisture separator 7,8 respectively,
Liquid countercurrent when preventing draining, influences the normal work of moisture separator 6,7,8, and draining pump 14 is communicated with discharge outlet 20, with
Liquid water in flow treatment channel is discharged from discharge outlet 143.
The moisture separator 6,7,8 of the present embodiment can receive signal in control system and be sent out for gas-monitoring hardware system
It is drained during cloth signal instruction, to realize the purpose of protective gas detection module 500, to the effective protection gas concentration
Detector.
In order to ensure subsequent gas detection module 500 is to the accuracy of gas detection, the gas of the present embodiment pre-processes
Module 200 further includes drier 12, and one end of drier 12 is connected company by check-valves 11 with the gas vent of moisture separator 8
Logical, i.e., the inlet end of drier 12 is connected to by check-valves 11 with the gas vent for being arranged in the moisture separator 8 of the last one,
Dewatered gas to be further dried, the setting of check-valves 11 can effectively prevent back flow of gas；Drier 12 is excellent
Choosing can be made of multiple materials such as silica gel.
The other end serial communication power plant module 300 of drier 12, power plant module 300 are used to be the gas concentration detector
Interior gas flowing provides power, and power plant module 300 includes but not limited to aspiration pump, or other can be gas in pipeline
Body flowing provides the device of power, and in the present embodiment, preferably power plant module 300 is made of aspiration pump 13, the both ends of aspiration pump 13
It is connected to respectively with gas preprocessing module 200 and gas detection module 500.
In the present embodiment, gas detection module 500 is connected with gas preprocessing module 200 by power plant module 300, is used for
Gas after being detached to aqueous vapor carries out gas concentration detection, and the gas data information detected is transferred to control system.Gas
Body detection module 500 includes two detection branch of parallel connection, and two detection branch are connected in series with power mould by threeway 19 respectively
Block 300 a, wherein detection branch is connected in series with spinner flowmeter 15, combustible/toxic gas sensor 16, electronic flowmeter
17 and exhaust outlet 21, another detection branch directly threeway 19 is connected to exhaust outlet 21 by pipeline；Flammable/toxic gas passes
Sensor 16 couples with the signal transceiver 18 of signal transmission module 600, and the data of flammable/toxic gas of detection are passed through letter
Number transceiver 18 is transferred to signal transmission module 600, is then further transmitted to control system.
In the present embodiment, the inlet end of the aspiration pump 13 of power plant module 300 passes through pipeline phase with the outlet side of drier 12
Connection, aspiration pump 13 is preferably electrodynamic type asepwirator pump or diaphragm pump, for conveying the gas in inspection shaft according to preset flow velocity
To spinner flowmeter 15 and electronic flowmeter 17；Spinner flowmeter 15 and electronic flowmeter 17 cooperate, and can not only detect
Gas flow can also control gas flow, wherein spinner flowmeter 15 is by gas transport to toxic/combustible gas sensor
16, gas concentration is detected using toxic/combustible gas sensor 16.
In the present embodiment, as shown in Fig. 4~Fig. 8, control system includes circuit control module 700 and upper computer module 800；
Circuit control module 700 respectively with gas collecting module 100, gas preprocessing module 200, drain module 400, gas detection mould
Block 500 and signal transmission module 600 couple；Upper computer module 800 passes through signal transmission module 600 and circuit control module 700
Connection, upper computer module 800 receive the gas data information that gas-monitoring hardware system transmits by signal transmission module 600,
And analysis storage is carried out to data, while gas-monitoring hardware system is controlled using circuit control module 700.
In the present embodiment, circuit control module 700 includes control module hardware and control module software, circuit control module
700 circuit control structure as shown in figure 9, control module software respectively with control module hardware, signal transmission system 600 and on
Position machine module 800 couples, and to obtain the data information from gas-monitoring hardware system by signal transmission system 600, and passes
It send to upper computer module 800, while obtaining the data analysis information from upper computer module 800, and pass through control module hardware
The working condition of gas-monitoring hardware system and signal transmission system 600 is controlled.
As shown in figure 4, control module hardware includes circuit control panel 710 and power supply 720, circuit control panel 710 respectively with
Gas collecting module 100, gas preprocessing module 200, drain module 400, gas detection module 500 and signal transmission module
600 connections, to control respectively the working condition of gas-monitoring hardware system and signal transmission module 600.
As shown in figure 5, control module software includes software section 730 and control circuit 740, software section 730 respectively with
Upper computer module 800, signal transmission module 600 and control circuit 740 couple, and control circuit 740 couples with control module hardware；
Software section 730 includes the equipment remote control module 731 coupled respectively with signal transmission module 600 and communication center 732, if
Standby remote control module 731 is connect with the human-computer interaction interface 840 of upper computer module 800, be have passed through and is believed in upper computer module 800
Number reading, display, storage and analysis, operation and control personnel can by human-computer interaction interface 840 to equipment send instruct,
After input instruction, equipment remote control module 731 is then believed by signal transmission module 600 to gas-monitoring hardware sending action
Number, the center that communication center 732 ensures stable signal transmission and reliability as one is played during signal transmission
Crucial effect.Under the action of control circuit 740, equipment is after receiving the signal that signal transmission module 731 is sent, essence
True progress acts accordingly, to complete the command adapted thereto that operation and control personnel assign.
As shown in fig. 6, control circuit 740 include couple respectively with signal transmission module 600 gas-monitoring module 741,
Control module 742, correction verification module 743 and self-protection module 744 are drained, gas-monitoring module 741 is controlled including gas collecting
The gentle physical examination survey control module 741-3, gas collecting control module 741-1 of module 741-1, gas treatment control module 741-2,
The gentle physical examinations of gas treatment control module 741-2 are surveyed control module 741-3 and are pre-processed respectively with gas collecting module 100, gas
Module 200 and gas detection module 500 couple；Draining control module 742 couples with drain module 400；Self-protection module 744
Including time calibration module 744-1, anti-theft module 744-2, lightning-protection module 744-3, rain-proof module 744-4 and dustproof module 744-
5。
After a period of time is not started to work or worked to gas detection module 500, in order to ensure that gas concentration detects
Instrument being capable of normal and high precision work, it is necessary to be verified to gas detection module 500.In the shape that solenoid valve 1 is opened
Under state, multiple gas sampling assembly 1-1 is allowed to open and work successively, and unlatching needs certain interval of time every time, in aspiration pump
Under the action of 13, gas gas detection module 500 complete gas detection function after, close multiple gas sampling assembly 1-1 and
Aspiration pump 13；Drain module 400 and draining pump 14 are opened simultaneously, under the action of draining pump 14, gas passes sequentially through three water
Gas separating device 6,7,8 enters in drain module 400, when by the second vapor sensor 5, if the second vapor sensor 5 at this time
Can detect has the signal of liquid in pipeline, then the second vapor sensor 5 by signal transmission module 600 to equipment remote control
Module 731 and correction verification module 743 transmit the information that signal changes, and under the control of circuit, equipment remote control module 731 then leads to
Oversampling circuit control panel control drain module 400 then starts checking routine next time again while emptying water, in school each time
During testing program, the message that each signal changes can be transferred to equipment remote control module 731 by the second vapor sensor 5
With correction verification module 743, the signal until can't detect flow in the second vapor sensor 5, i.e. three moisture separators 6 of guarantee,
7, the water in 8 is discharged, then this time verification terminates.Verification terminates, and shows the detection program that can carry out gas, i.e. gas detection
Module 500 can work normally.
In self-protection module 744, in order to realize the self-protection function of system, and in real time to equipment remote control module
The working condition of 731 reporting devices, the first vapor sensor 2,3,4 and the second vapor sensor 5 and electronic flowmeter 17 need
The data and working condition of oneself are transmitted to equipment remote control module 731 by signal transmission module 600 in real time, and are passed through
Control circuit 740 obtains the instruction from equipment remote control module 731.
In time calibration module 744-1, during gas concentration detects, due to the flowing, processing and purification of gas
The regular hour is needed, air-flow transmits gas by the time of multipath gas acquisition channel air inlet and by signal transmission module 731
The time of the data of bulk concentration to equipment remote control module 731 is poor there are the regular hour, in equipment remote control module 731
It is to be measured to ensure by control circuit 740 to reach time newer function after the concentration data for receiving surveyed gas
The consistency of gas concentration data and time, to achieve the purpose that detect gas concentration in inspection shaft in time, and then according to gas
Concentration data information judges whether gas pipeline is revealed.
In anti-theft module 744-2, in order to ensure the anti-theft feature of the gas concentration detector, the gas concentration detector
Gas-monitoring hardware system is integrally mounted in an explosion-proof tank 22, is switched using mechanical stroke, for detecting explosion-proof tank 22
Integrated chamber door position and opening and closing, when chamber door is opened, switch can transmit a signal to equipment remote control module in time
731, the early warning when integral box or stolen internal components is realized, to reach antitheft function.
The lightning protection function of lightning-protection module 744-3 belongs to the moment of the included function of equipment, thunder and lightning and large electric equipment
Overvoltage can more and more frequently by the circuits such as power supply, antenna, radio signal transceiver invade indoor electric equipment and
The network equipment causes equipment or component damage, and casualties, transmission or the data stored are interfered or lose, or even make
Electronic equipment generates malfunction or temporarily paralysis, system-down, and data-transmission interruptions, LAN or even wide area network are destroyed.
Equipment is connected by conducting wire with the earth, can effectively be avoided the above damage, be realized the self-protection of equipment.
It, can be with widely used original intention based on such equipment in rain-proof module 744-4, it is contemplated that may be met in equipment use
The complicated severe weather conditions arrived, the equipment also have the function of rain-proof, belong to the included function of equipment, device integration system phase
To sealing, there is water proofing property, related electric equipment and circuit board carry out anti-water management, rainfall do not interfere with gas sampling and
The process of detection will not influence the receiving of transmission and the order of signal.
The dust reduction capability of dustproof module 744-5 also belongs to the included function of equipment, is equipped in the side of explosion-proof tank 22 anti-
Dirt net makes the equipment have good leakproofness and thermal diffusivity, ensures that dust will not enter in integrated equipment, dust reduction capability is
Basic demand to equipment.
As shown in fig. 7, upper computer module 800 includes the data read module 810 being coupled to each other, data display memory module
820, data analysis module 830 and human-computer interaction interface 840, data read module 810 pass through signal transmission module 600 and gas
Hardware system connection is monitored, human-computer interaction interface 840 couples with equipment remote control module 731；Human-computer interaction interface is also connected with
There are warning function module 841, warning function module 841 to couple with self-protection module 744.
Upper computer module 800, you can, can on the screen of upper computer module 800 directly to send out the computer of manipulation command
When showing that the gas concentration of each road gas sampling assembly acquisition and the data and modules of acquisition time work, the
The signal intensity situation of one vapor sensor 2,3,4 and the second vapor sensor 5 and electronic flowmeter 17.Upper computer module
800 major functions for including have：The signal message for receiving signal transmission module 600, carries out the reading of signal data, shows and deposit
Storage, carries out the analysis of data, is acted come starting device remote control module 731 by human-computer interaction interface 840 and passes through early warning
Function module 841 carries out warning function.After signal transmission module 600 receives coherent signal, by the reading of data, deposit
Storage can show the concentration data and gas signal and water-flow signal of gas on the screen of upper computer module 800
Mutual transitional information determines the action and instruction of next step by data analysis, includes whether to start aspiration pump 13 and row
Air pump 14 and selection start gas detection function or drain function.By data analysis, after obtaining corresponding conclusion, make
It transmitted between people and computer, exchange information media and the human-computer interaction interface 840 of dialog interface is then remotely controlled by equipment
Molding block 731 carrys out the realization of the next step action and function of control device, and then equipment remote control module 731 then passes through signal
Transmission module 600 instructs the next step of equipment to act to the signal of corresponding equipment sending action.Meanwhile when equipment is remotely controlled
Molding block 731 receives the chamber door that mechanical stroke switch is sent and is opened, i.e., when integrated equipment is in the signal of abnormality,
Human-computer interaction interface 840 can directly initiate warning function module 841, to achieve the purpose that timely early warning and debugging.Cause
This, the process of entire signal transmission is actually the process of a feedback, and signal transmission module 600 then plays communication and tie
Effect.
The signal transmission structure of the present embodiment is as shown in figure 8, the solid arrow in figure is output side signal to dotted arrow
Direction is fed back for signal, is respectively present between upper computer module 800, signal transmission module 600 and circuit control panel 710 two-way
Data signal transmission stream, circuit control panel 710 and gas collecting module 100, power plant module 300, drain module 300 and power supply
Two-way data signal transmission stream is respectively present between 720, and gas preprocessing module 200 and gas detection module 500 are distinguished
There are the outputs of unidirectional data-signal to flow between circuit control panel 710.
The present embodiment also proposed the control method of gas concentration detector as described above, include the following steps：
S1, gas in each inspection shaft is acquired respectively by the gas collecting channel of multi-channel parallel；
S2, gas-water separation pretreatment is carried out to the gas of acquisition by gas preprocessing module；
S3, pretreated gas is detected by gas detection module 500, to obtain the data information of gas；
S4, by the data information of control system analysis gas, to judge whether gas pipeline leaks；
S5, judging result is shown by control system, and pre- according to judging result adjustment gas collecting module 100, gas
Processing module 200 and gas detection module 500.
Specifically, when carrying out gas detection function using the gas concentration detector, it is first turned on gas-monitoring hardware
The power supply of system and control system, module 743 to be verified terminate checking routine, the signal that equipment can work normally are passed through letter
Number transmission module 600 is transferred to after equipment remote control module 731, and equipment remote control module 731 passes through circuit control
710 order aspiration pump 13 of plate is in negative pressure working condition, and gas collecting module 100 is extend into inspection shaft to the gas acquired in inspection shaft
Body, air-flow to be measured can sequentially pass through gas sampling assembly 1-1,1-2 is sought in filtering and enter gas by the solenoid valve 1 of circuit control
In acquisition module 100, by circuit control, multipath electrovalve 1 has multi-channel sampling mouth free switching function.It is pre-processed in gas
In module 200, air-flow is in the mistake for flowing through the moisture separator 6,7,8 that three work normally under low discharge and low-pressure state
Cheng Zhonghui removes the aqueous water in air-flow, and under the control of circuit, the first water flow sensing unit 2,3,4 passes through signal transmission respectively
Module 600 is kept at any time and the data exchange of equipment remote control module 731, passes through the second water flow sensing unit 5 to reach air-flow
There is no the purpose of aqueous water, realization to automatically cut off gas preprocessing module when the second water flow sensing unit 5 is intake in Shi Chengfen
Gas treatment channel function and it is anhydrous when keep the pipeline in gas treatment channel unimpeded function.
In gas treatment channel, under test gas, which enters by check-valves 11 in drier 12, further removes moisture, later
Abundant dewatered air-flow then enters in gas detection module 500, and the gas for flowing through pipeline is controlled by spinner flowmeter 15
Body flow is to meet range appropriate, and electronic flowmeter 17 can then be monitored flow, spinner flowmeter 15 and electron stream
Gauge 17 transmits data on flows by signal transmission module 600 under the control of circuit to equipment remote control module 731 respectively.
Then, the gas of certain flow carries out the toxic and harmful gas concentration such as methane and ethane by combustible/toxic gas sensor 16
Test, to achieve the purpose that in inspection shaft that gas concentration detects, meanwhile, combustible/toxic gas sensor 16 and signal transceiver
18 connections can transmit the concentration data of gas under the control of circuit by signal transmission module 600 to control system, and
The type, concentration and time of gas are corresponded；Gas concentration detection is discharged by exhaust outlet 21 in gas after detection
Instrument.
When gas detection module 500 is intake, i.e., when gas detection function cannot be realized normally, equipment remote control module
731 in receiving the second vapor sensor 5 after having signal existing for moisture, can be ordered and be taken out by circuit control module 700
Air pump 13 is closed, while order draining pump 14 is opened, and simultaneously closes off multipath gas acquisition channel by solenoid valve 1；It is arranging
Under the action of water pump 14, gas passes through three moisture separators 6,7,8, the water that will be deposited in three moisture separators 6,7,8 successively
It is respectively pressed into drain module 400, after check-valves 9,10 and the second vapor sensor 5, is discharged by discharge outlet 20.
It should be noted that between gas detection module 500 and signal transmission module 600 and signal transmission module 600
Can be connected by communication between control system, including but not limited to wired, wireless, 3G signals, 4G signals with
And the communications such as GDB network modes.
In conclusion the gas concentration detector of the present embodiment includes interconnected gas-monitoring hardware system, signal
Transmission module 600 and control system, control system monitors system with gas hardware by signal transmission module 600 and connect, with control
Gas-monitoring hardware system processed simultaneously receives the data information from gas-monitoring hardware system, and gas-monitoring hardware system includes：
Gas collecting module 100, gas preprocessing module 200, drain module 400, power plant module 300 and gas detection module 500；Control
System processed includes：Circuit control module 700 and upper computer module 800.The gas concentration detector can select according to actual needs
Determine monitoring point, gas concentration in real time on-line monitoring inspection shaft can detect multiple gases by the modes such as catalysis, infrared, if any
The harmful gas concentrations such as methane, ethane, H2S and CO targetedly are detected simultaneously, there is intellegent sampling, aqueous vapor separation, flow prison
Observing and controlling system, drain function, and there is remote control function, the methane gas and ethane gas concentration in inspection shaft can be monitored simultaneously,
Whether energy real-time judge has gas pipeline, and there is a situation where leak to occur；It, can by the way that one or more levels moisture separator is arranged
To ensure to efficiently separate the moisture under test gas, effectively avoids in gas moisture very high and gas test component is caused to damage
It is bad, it can be with the effective protection gas concentration detector.
The embodiment of the present invention provides for the sake of example and description, and is not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
It is and to make those skilled in the art to more preferably illustrate the principle of the present invention and practical application to select and describe embodiment
It will be appreciated that various embodiments with various modifications of the present invention to design suitable for special-purpose.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Any process described otherwise above or method description in flow chart or herein is construed as indicating
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, include according to involved function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Claims (10)
1. a kind of gas concentration detector, which is characterized in that including gas-monitoring hardware system, signal transmission module and control system
System, the control system is connect by signal transmission module with gas-monitoring hardware system, to control the gas-monitoring hardware
System simultaneously receives the data information from the gas-monitoring hardware system, and the gas-monitoring hardware system includes：
Gas collecting module includes the gas collecting channel of solenoid valve and multi-channel parallel, each gas collecting channel difference
Gas can be acquired from each inspection shaft, and each gas collecting channel is connected to the solenoid valve；
Gas preprocessing module includes the gas treatment channel with the gas collecting block coupled in series, the gas treatment channel
It is parallel with drain module by least one moisture separator, the drain module includes the second vapor sensor of serial communication
And draining pump, second vapor sensor are connected to by check-valves with the water export of moisture separator；
Power plant module, for providing power for the gas flowing in gas concentration detector described in this；
Gas detection module carries out poisonous and harmful gas with the gas treatment Tandem for the gas after being detached to aqueous vapor
Bulk concentration detects, and the gas data information detected is transferred to the control system；
The control system includes：Circuit control module, respectively with the gas collecting module, gas preprocessing module, draining
Module, gas detection module and signal transmission module connection；The circuit control module includes control module software；The control
Module software includes software section and control circuit；The software section includes that the equipment that couples with the signal transmission module is remote
Process control module, the control circuit include the correction verification module coupled with the signal transmission module；In the gas detection mould
Block was not started to work or is worked after a period of time, by the equipment remote control module and correction verification module to the gas
Detection module is verified；
It is described to be verified as：It keeps the gas detection module to close, and opens simultaneously the drain module, so that the gas exists
Under the action of draining pump, passes sequentially through each moisture separator and enter in drain module, the second vapor sensor inspection
When measuring the signal for having liquid in pipeline, by the signal transmission module respectively to equipment remote control module and correction verification module
The information that signal changes is transmitted, the equipment remote control module controls drain module while the water in emptying gas, again
Start checking routine next time；In the checking routine each time, second vapor sensor turns each signal
The message of change is transferred to the equipment remote control module and correction verification module respectively, is detected until in second vapor sensor
Less than the signal of flow, then the verification terminates.
2. gas concentration detector according to claim 1, which is characterized in that the inlet end in the gas collecting channel is set
There are gas sampling assembly, the gas sampling assembly to be correspondingly arranged in the inspection shaft, the gas sampling assembly and solenoid valve
Between gas collecting channel on be additionally provided with filter ball.
3. gas concentration detector according to claim 1, which is characterized in that the aqueous vapor point on the gas treatment channel
It is three from device, the first vapor sensor is also in series with respectively between three moisture separators；And three aqueous vapors point
The water inlet of drain module described in water export difference parallel communication from device.
4. gas concentration detector according to claim 1, which is characterized in that the draining pump is communicated with discharge outlet.
5. gas concentration detector according to claim 1, which is characterized in that the gas preprocessing module further includes doing
One end of drying prescription, the drier is connected to by check-valves with the gas vent of the moisture separator, other end serial communication
The power plant module.
6. gas concentration detector according to claim 1, which is characterized in that the power plant module includes aspiration pump, institute
The both ends for stating aspiration pump are connected to gas preprocessing module and gas detection module respectively.
7. gas concentration detector according to claim 1, which is characterized in that the gas detection module includes in parallel
Two detection branch, two detection branch are connected in series with the power plant module by threeway respectively, wherein an inspection
It surveys branch and is connected in series with spinner flowmeter, combustible/toxic gas sensor, electronic flowmeter and exhaust outlet, described in another
Detection branch is connected to by pipeline with the exhaust outlet；The signal of the combustible/toxic gas sensor and signal transmission module
Transceiver couples.
8. according to claim 1-7 any one of them gas concentration detectors, which is characterized in that the control system includes：
Upper computer module is coupled by the signal transmission module with circuit control module.
9. gas concentration detector according to claim 8, which is characterized in that the circuit control module includes control mould
Block hardware；
The control module hardware includes circuit control panel, the circuit control panel respectively with the gas collecting module, gas
Preprocessing module, drain module, gas detection module and signal transmission module connection；
The software section includes the communication center coupled with the signal transmission module；
The control circuit includes the gas-monitoring module coupled respectively with the signal transmission module, drains control module and oneself
My protection module, the gas-monitoring module includes gas collecting control module, the gentle physical examination observing and controlling of gas treatment control module
Molding block, the gentle physical examination of the gas collecting control module, gas treatment control module survey control module respectively with gas collecting
Module, gas preprocessing module and gas detection module connection；The draining control module couples with the drain module；It is described
Self-protection module includes time calibration module, anti-theft module, lightning-protection module, rain-proof module and dustproof module；
The upper computer module include the data read module being coupled to each other, data show memory module, data analysis module and
Human-computer interaction interface, the data read module is coupled by signal transmission module with gas-monitoring hardware system, described man-machine
Interactive interface couples with the equipment remote control module；The human-computer interaction interface is also associated with warning function module, described
Warning function module couples with self-protection module.
10. such as the control method of claim 1-9 any one of them gas concentration detectors, which is characterized in that including following
Step：
Acquire the gas in each inspection shaft respectively by the gas collecting channel of multi-channel parallel；
Gas-water separation pretreatment is carried out to the gas of acquisition by gas preprocessing module；
The pretreated gas is detected by gas detection module, to obtain the data information of the gas；
By the data information of gas described in control system analysis, to judge whether gas pipeline leaks；
Show the judging result by the control system, and according to the judging result adjust the gas collecting module,
Gas preprocessing module and gas detection module；
After a period of time is not started to work or worked to the gas detection module, pass through the equipment remote control module
The gas detection module is verified with correction verification module；
It is described to be verified as：It keeps the gas detection module to close, and opens simultaneously the drain module, so that the gas exists
Under the action of draining pump, passes sequentially through each moisture separator and enter in drain module, the second vapor sensor inspection
When measuring the signal for having liquid in pipeline, by the signal transmission module respectively to equipment remote control module and correction verification module
The information that signal changes is transmitted, the equipment remote control module controls drain module while the water in emptying gas, again
Start checking routine next time；In the checking routine each time, second vapor sensor turns each signal
The message of change is transferred to the equipment remote control module and correction verification module respectively, is detected until in second vapor sensor
Less than the signal of flow, then the verification terminates.
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| CN106527512B (en) * | 2016-10-14 | 2019-04-26 | 北京理工大学 | A kind of control method of single-point monitoring gas concentration detector |
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| CN106527513A (en) * | 2016-12-29 | 2017-03-22 | 重庆奥海辉龙大数据有限公司 | Gas monitoring system and method |
| CN107064058B (en) * | 2017-01-05 | 2020-08-21 | 中国地质调查局水文地质环境地质调查中心 | Shale gas leakage multiple gas online monitoring device and method |
| CN107071345A (en) * | 2017-02-16 | 2017-08-18 | 中国石油化工股份有限公司 | Flameproof and intrinsically safe mixed type anti-explosion surveillance terminal |
| CN109387341A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | The combined type gas leakage monitor alarm device and method monitored based on gas concentration and physical quantity |
| CN107796678A (en) * | 2017-12-04 | 2018-03-13 | 浙江省安全生产科学研究院 | A kind of gas controlling device for adverse circumstances |
| CN108930914B (en) * | 2018-05-18 | 2019-08-02 | 北京理工大学 | Gas leakage source tracing method and device |
| CN108918902A (en) * | 2018-09-25 | 2018-11-30 | 上海新奥林汽车传感器有限公司 | A kind of gas function detecting instrument automation gas supply system |
| CN109900431A (en) * | 2018-11-13 | 2019-06-18 | 阿里巴巴集团控股有限公司 | The detection method and device of container state, electronic equipment |
| JP7123837B2 (en) * | 2019-03-15 | 2022-08-23 | 日本特殊陶業株式会社 | gas sensor |
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| CN111442880A (en) * | 2020-04-26 | 2020-07-24 | 北京北方华创微电子装备有限公司 | Detection system and detection method for semiconductor equipment |
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