CN110208321A - A kind of combustible gas explosion limit analysis system - Google Patents
A kind of combustible gas explosion limit analysis system Download PDFInfo
- Publication number
- CN110208321A CN110208321A CN201910597769.9A CN201910597769A CN110208321A CN 110208321 A CN110208321 A CN 110208321A CN 201910597769 A CN201910597769 A CN 201910597769A CN 110208321 A CN110208321 A CN 110208321A
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- gas
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- sample
- pressure
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- 238000004458 analytical method Methods 0.000 title claims abstract description 22
- 238000004880 explosion Methods 0.000 title claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 106
- 238000002485 combustion reaction Methods 0.000 claims abstract description 34
- 239000000567 combustion gas Substances 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims abstract description 10
- 230000003434 inspiratory effect Effects 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 7
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 19
- 239000001301 oxygen Substances 0.000 abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 abstract description 19
- 239000002737 fuel gas Substances 0.000 abstract description 14
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 229910001872 inorganic gas Inorganic materials 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000486406 Trachea Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
- G01N25/28—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly
Abstract
The invention discloses a kind of combustible gas explosion limit analysis systems, including combustion gas transportation system, combustion reaction system, sample gas transportation system, the reaction induction system of heat in combustion reaction system can be detected, range gas transportation system and compressed gas negative-pressure sucking extraction system, the combustion gas transportation system and sample gas transportation system are connect with combustion reaction system respectively, and reaction induction system is provided in combustion reaction system, the compressed gas negative-pressure sucking extraction system is connected between combustion gas transportation system and combustion reaction system, and range gas transportation system is connected to, between sample gas transportation system and combustion reaction system, here pass through burning, inorganic fuel gas and organic combustible gas can be measured, and the content of oxygen, it is more complete.
Description
Technical field
The present invention relates to combustible gas explosion limit analysis technical field, specially a kind of combustible gas explosion limit analysis
System.
Background technique
A large amount of organic and inorganic combustible gases are generated during industrial production (medication chemistry, packages printing, surface spraying etc.)
How body ensures fuel gas safe transport and utilization, prevents fire and explosion danger accident from occurring, increasingly by country and
Enterprises and institutions' concern and attention.With environmental requirement and the raising of supervision, to the standard and essence of the monitoring of gas concentration
Exactness is also higher and higher.Especially in recent years, the industries waste gas emission standard such as medication chemistry, packages printing, surface spraying mentions
Out, how to ensure that concentration guarantees below Flammability limits value, it is ensured that the conveying of exhaust gas safety compliance and utilization are more next in production process
More further is paid attention to and paid close attention to.
Usual fuel gas needs certain safety margin, is generally indicated with the percentage of lower explosion limit LEL, such as 20%
LEL.For oxygen, it is ensured that in a safe range, under limit oxygen concentration, explode without enough oxygen, such as
There are 3-4% oxygen, safe explosion danger also be can avoid.Meanwhile country has formulated Specification, further ensures that monitoring
The healthy and orderly development of technology, for example national standard specification " continuously supervise by HJ 1013-2018 stationary source exhaust gas non-methane total hydrocarbons
Examining system technical requirements and detection method " series that defines non-methane total hydrocarbons continuous monitor system in stationary source exhaust gas wants
It asks.
The quick LEL monitoring instrument of industrial process fuel gas measurement analysis is usual are as follows: catalysis burning, infrared absorption analysis
Instrument or flame ionisation detector FID testing principle limit to obvious, wherein Analysis of Defects to application environmental working condition
It is as follows:
Although catalysis burning is temperature methods, reaction speed is slow, is easy failure and catalyst poisoning, maintenance is big,
Wrong report and failure risk height etc.;
Although infrared absorption analysis principle is relatively stable, NDIR is infrared, and there are spectral wavelength coverings, and to being mixed with
The response of machine object is uncertain, and the response time, to the requirement of measurement gas temperature and dual symmetry gas, inorganic gas is without sound
The problems such as answering etc.;
FID is one of analysis most commonly used method of hydrocarbon, passes through hydrocarbon combustion shape in measurement flame
At ionic current.Although principle is relatively stable quick, there is to inorganic gas the problems such as without response.
For this reason, it may be necessary to which one kind can measure organic gas and inorganic gas, and the system of measurement oxygen content.
Summary of the invention
The purpose of the present invention is to provide a kind of combustible gas explosion limit analysis systems, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of combustible gas explosion limit analysis system, packet
Include combustion gas transportation system, combustion reaction system, sample gas transportation system, the reaction sense that heat in combustion reaction system can be detected
System, range gas transportation system and compressed gas negative-pressure sucking extraction system are answered, the combustion gas transportation system and sample gas are defeated
It send system to connect respectively with combustion reaction system, and is provided with reaction induction system in combustion reaction system, the compressed gas is negative
Pressure suction extraction system be connected between combustion gas transportation system and combustion reaction system, and range gas transportation system be connected to,
Between sample gas transportation system and combustion reaction system;
The combustion reaction system includes flame unit assembly, and the flame unit assembly includes the chamber for accommodating combustion test
Room shape flame unit, and burner platform is provided in flame unit, the spark plug of igniting is provided on the burner platform;
The combustion gas transportation system includes the burning letter shoot connecting with flame unit and to be connected to combustion gas defeated
Send the combustion gas pressure-control valve and combustion-gas flow meter on pipe;
The compressed gas negative-pressure sucking extraction system include negative inspiratory pressure device, the negative tube being connect with negative inspiratory pressure device and
The negative pressure pressure valve and negative pressure flowmeter being connected on negative tube, and the end of negative tube is connected to burning letter shoot close to fire
On one end of flame unit;
The sample gas transportation system includes the sample gas appendix connecting with flame unit, and sample gas appendix and negative
Sample gas meter is provided between pressure pipe;
The range gas transportation system includes the range tracheae connecting with sample gas appendix and is connected to range tracheae
On range atmospheric pressure valve and range air-flow meter;
The end of the flame unit is connected with exhaust pipe, and the end of exhaust pipe is connected on negative inspiratory pressure device.
Preferably, the reaction induction system includes flame detector, can be electric signal by the converting heat of burning generation
Temperature detector and the analog-digital converter that is connect with temperature detector, the analog-digital converter be connected with microprocessor, and
Microprocessor connection can show that the configuration of under test gas content is shown.
Preferably, it is provided with exhaust fire arrester between the exhaust pipe and flame unit, and is provided with exhaust on exhaust pipe
Flowmeter.
It preferably, further include the pressure sensor being arranged on sample exhaust pipe, and pressure sensor is electrically connected micro process
Device, the microprocessor are connected with police instruction.
Preferably, the police instruction is warning lamp and buzzer.
Preferably, the gas that the burning letter shoot is passed through is one kind of hydrogen and person's propane.
Preferably, exhaust fire arrester is provided between the flame unit and exhaust pipe, and flame unit and sample gas are defeated
Sample gas fire arrester is provided between tracheae.
Preferably, discharge filter and sample air filter are respectively arranged on the exhaust pipe and sample gas appendix.
Preferably, the exhaust flow-meter, range air-flow meter, negative pressure flowmeter and sample gas meter are orifice plate stream
Meter.
Compared with prior art, the beneficial effects of the present invention are:
1, by sample gas appendix, input sample is entered in flame unit, meanwhile, it is sent into through burning letter shoot
Fuel guarantees the oxygen completely burned in sample, by not being easily ignited by the spark plug on burner platform, burns, then temperature
The heat generated when degree detector detection burning, is transformed into electric signal through analog-digital converter, is transmitted to microprocessor, then micro process
Device is transmitted to configuration and shows, shows oxygen content;
2, similar with oxygen determination gas likewise, when measuring fuel gas content, only, it is not passed through combustible fuel gas, but
It is passed through the air of compression by negative tube, oxygen is provided, carries out full combustion, in conjunction with sample gas meter and negative pressure flowmeter
Flow is calculated through microprocessor, through Dynamically Announce, shows the content of fuel gas;
Here the content of inorganic fuel gas and organic combustible gas and oxygen can be measured, more entirely.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is circuit theory schematic diagram of the invention.
In figure: 1 negative inspiratory pressure device, 2 exhaust flow-meters, 3 pressure sensors, 4 exhaust fire arresters, 5 exhaust fire arresters, 6 combustions
Burner plate, 7 flame unit assemblies, 8 flame units, 9 sample gas fire arresters, 10 combustion-gas flow meters, 11 burning atmospheric pressure controls
Valve, 12 burning letter shoots, 13 range air-flow meters, 14 range tracheaes, 15 negative pressure flowmeters, 16 negative pressure pressure valve, 17 negative pressure
Pipe, 18 range atmospheric pressure valves, 19 sample air filters, 20 sample gas meters, 21 sample gas appendixs, 22 exhaust pipes.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 to 2 is please referred to, the present invention provides a kind of technical solution: a kind of combustible gas explosion limit analysis system, including
Combustion gas transportation system, combustion reaction system, sample gas transportation system, the reaction induction that heat in combustion reaction system can be detected
System, range gas transportation system and compressed gas negative-pressure sucking extraction system, combustion gas transportation system and sample gas transportation system
It is connect respectively with combustion reaction system, and is provided with reaction induction system in combustion reaction system, compressed gas negative-pressure sucking extracts
System is connected between combustion gas transportation system and combustion reaction system, and range gas transportation system is connected to, sample gas conveying
Between system and combustion reaction system.
Combustion reaction system includes flame unit assembly 7, and flame unit assembly 7 includes the chamber shape fire for accommodating combustion test
Flame unit 8, and burner platform 6 is provided in flame unit 8, the spark plug of igniting is provided on burner platform 6.
Combustion gas transportation system include the burning letter shoot 12 being connect with flame unit 8 and be connected to combustion gas conveying
Combustion gas pressure-control valve 11 and combustion-gas flow meter 10 on pipe 12.
Compressed gas negative-pressure sucking extraction system include negative inspiratory pressure device 1, the negative tube being connect with negative inspiratory pressure device 1 17 and
The negative pressure pressure valve 16 and negative pressure flowmeter 15 being connected on negative tube 17, and the end of negative tube 17 is connected to combustion gas conveying
Pipe 12 is on one end of flame unit 8.
Sample gas transportation system includes the sample gas appendix 21 connecting with flame unit 8, and sample gas appendix 21 with
Sample gas meter 20 is provided between negative tube 17.
Range gas transportation system includes the range tracheae 14 connecting with sample gas appendix 21 and is connected to range tracheae
Range atmospheric pressure valve 18 and range air-flow meter 13 on 14.
The end of flame unit 8 is connected with exhaust pipe 22, and the end of exhaust pipe 22 is connected on negative inspiratory pressure device 1, row
It is provided with exhaust fire arrester 5 between tracheae 22 and flame unit 8, and is provided with exhaust flow-meter 2 on exhaust pipe 22, measurement exhaust
Flow further includes the pressure sensor 3 being arranged on sample exhaust pipe 22, and pressure sensor 3 is electrically connected microprocessor, micro- place
Reason device is connected with police instruction, once gas circulation is unsmooth, just will call the police, and reminds staff's maintenance, and police instruction is warning
Lamp and buzzer can be seen in this way, can also hear, the gas that burning letter shoot 12 is passed through is the one of hydrogen and person's propane
Kind, it can burn with oxygen association reaction, flame is avoided to flow out, guarantee that measurement is accurate, exhaust pipe 22 and sample gas appendix
It is respectively arranged with discharge filter 4 and sample air filter 19 on 21, impurity is avoided to enter, exhaust flow-meter 2, range throughput
Meter 13, negative pressure flowmeter 15 and sample gas meter 20 are orifice flowmeter, more accurately.
Reaction induction system includes flame detector, the temperature detector that the converting heat that can generate burning is electric signal
And the analog-digital converter being connect with temperature detector, analog-digital converter is connected with microprocessor, and microprocessor connection can
The configuration of display under test gas content is shown, shows the content of fuel gas, the heat generated by burning, and the sample being passed through
The amount of product gas and fuel gas is calculated, when what is be passed through is fuel gas, be in order to consume the intracorporal oxygen of sample gas gas,
Estimate oxygen content, and when what is be passed through is the oxygen of negative tube 17, be exactly in order to by sample organic gas and it is inorganic can
Fire full combustion of gas.
Working principle: by sample gas appendix 21, input sample is entered in flame unit 8, meanwhile, through combustion gas
Delivery pipe 12 is sent into fuel, guarantees the oxygen completely burned in sample, by not being easily ignited by the spark plug on burner platform 6, into
Row burning, the heat then generated when temperature detector detection burning, is transformed into electric signal through analog-digital converter, is transmitted to micro process
Device, then microprocessor is transmitted to configuration and shows, shows oxygen content, likewise, when measurement fuel gas content, with oxygen determination gas class
Seemingly, only, it is not passed through combustible fuel gas, but is passed through the air of compression by negative tube 17, oxygen is provided, is sufficiently fired
It burns, is calculated in conjunction with the flow of sample gas meter 22 and negative pressure flowmeter 15 through microprocessor, through Dynamically Announce, display
The content of fuel gas.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of combustible gas explosion limit analysis system, it is characterised in that: including combustion gas transportation system, combustion reaction system
System, sample gas transportation system, the reaction induction system that heat in combustion reaction system can be detected, range gas transportation system and pressure
Contracting gas negative-pressure sucking extraction system, the combustion gas transportation system and sample gas transportation system connect with combustion reaction system respectively
It connects, and is provided with reaction induction system in combustion reaction system, the compressed gas negative-pressure sucking extraction system is connected to combustion gas
Between transportation system and combustion reaction system, and range gas transportation system is connected to, sample gas transportation system and combustion reaction system
Between system;
The combustion reaction system includes flame unit assembly (7), and the flame unit assembly (7) includes accommodating combustion test
Chamber shape flame unit (8), and be provided with burner platform (6) in flame unit (8), it is arranged a little on the burner platform (6)
The spark plug of fire;
The combustion gas transportation system includes the burning letter shoot (12) connecting with flame unit (8) and is connected to combustion gas
Combustion gas pressure-control valve (11) and combustion-gas flow meter (10) in delivery pipe (12);
The negative tube that the compressed gas negative-pressure sucking extraction system includes negative inspiratory pressure device (1), is connect with negative inspiratory pressure device (1)
, and the end of negative tube (17) (17) and the negative pressure pressure valve (16) and negative pressure flowmeter (15) that are connected on negative tube (17)
Burning letter shoot (12) is connected on the one end of flame unit (8);
The sample gas transportation system includes the sample gas appendix (21) connecting with flame unit (8), and sample gas appendix
(21) it is provided between negative tube (17) sample gas meter (20);
The range gas transportation system includes the range tracheae (14) connecting with sample gas appendix (21) and is connected to range
Range atmospheric pressure valve (18) and range air-flow meter (13) on tracheae (14);
The end of the flame unit (8) is connected with exhaust pipe (22), and the end of exhaust pipe (22) is connected to negative inspiratory pressure device
(1) on.
2. a kind of combustible gas explosion limit analysis system according to claim 1, it is characterised in that: the reaction induction
System includes flame detector, temperature detector and and temperature detector that the converting heat that can generate burning is electric signal
The analog-digital converter of connection, the analog-digital converter is connected with microprocessor, and microprocessor connection can show under test gas
The configuration of content is shown.
3. a kind of combustible gas explosion limit analysis system according to claim 2, it is characterised in that: the exhaust pipe
(22) it is provided with exhaust fire arrester (5) between flame unit (8), and is provided with exhaust flow-meter (2) on exhaust pipe (22).
4. a kind of combustible gas explosion limit analysis system according to claim 3, it is characterised in that: further include that setting exists
Pressure sensor (3) on sample exhaust pipe (22), and pressure sensor (3) is electrically connected microprocessor, the microprocessor connects
It is connected to police instruction.
5. a kind of combustible gas explosion limit analysis system according to claim 4, it is characterised in that: the police instruction
For warning lamp and buzzer.
6. a kind of combustible gas explosion limit analysis system according to claim 1, it is characterised in that: the combustion gas is defeated
Sending the pipe gas that (12) are passed through is one kind of hydrogen and person's propane.
7. a kind of combustible gas explosion limit analysis system according to claim 5, it is characterised in that: the flame unit
(8) it is provided with exhaust fire arrester (5) between exhaust pipe (22), and is set between flame unit (8) and sample gas appendix (21)
It is equipped with sample gas fire arrester (9).
8. a kind of combustible gas explosion limit analysis system according to claim 7, it is characterised in that: the exhaust pipe
(22) and on sample gas appendix (21) discharge filter (4) and sample air filter (19) are respectively arranged with.
9. a kind of combustible gas explosion limit analysis system according to claim 8, it is characterised in that: the extraction flow
Counting (2), range air-flow meter (13), negative pressure flowmeter (15) and sample gas meter (20) is orifice flowmeter.
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CN201910597769.9A CN110208321A (en) | 2019-07-04 | 2019-07-04 | A kind of combustible gas explosion limit analysis system |
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CN201910597769.9A CN110208321A (en) | 2019-07-04 | 2019-07-04 | A kind of combustible gas explosion limit analysis system |
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CN110208321A true CN110208321A (en) | 2019-09-06 |
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ID=67796141
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CN201910597769.9A Pending CN110208321A (en) | 2019-07-04 | 2019-07-04 | A kind of combustible gas explosion limit analysis system |
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Cited By (2)
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CN111366609A (en) * | 2020-03-15 | 2020-07-03 | 莱浦顿(上海)工程技术有限公司 | Combustible gas analyzer |
CN111766330A (en) * | 2020-06-30 | 2020-10-13 | 南京三鸣智自动化工程有限公司 | Gas detection device and detection method |
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