CN101915786A - System and method for monitoring combustible gas - Google Patents
System and method for monitoring combustible gas Download PDFInfo
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- CN101915786A CN101915786A CN 201010234910 CN201010234910A CN101915786A CN 101915786 A CN101915786 A CN 101915786A CN 201010234910 CN201010234910 CN 201010234910 CN 201010234910 A CN201010234910 A CN 201010234910A CN 101915786 A CN101915786 A CN 101915786A
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Abstract
The invention relates to a system and a method for monitoring a combustible gas, which can be applied to a containment vessel at a nuclear power station. The system comprises a combustible gas recombination device, an outlet electrical signal monitoring device, a data processing device and an output device, wherein the combustible gas recombination device is provided with an inlet and an outlet; the outlet electrical signal monitoring device is arranged at the outlet; the data processing device is connected with the outlet electrical signal monitoring device for processing according to the monitored outlet electrical signal to obtain the concentration of the combustible gas corresponding to the outlet electrical signal in airflow; and the output device is connected with the data processing device and used for outputting a concentration result. The electrical signal at the outlet of the combustible gas recombination device is monitored by the electrical signal monitoring device and then processed by the data processing device to obtain the content of the combustible gas in the airflow. The invention has the advantages that the monitoring of the combustible gas is not restricted by severe environment conditions of an accident; and the system and the method in the invention can achieve the monitoring of the combustible gas in a basic accident meeting design requirements and a severe accident simultaneously, and can realize continuous monitoring.
Description
Technical field
The present invention relates to the monitoring system and the method for inflammable gas, more particularly, relate to the system and method that a kind of interior inflammable gas of containment that may be used on nuclear power station is monitored.
Background technology
Improve constantly the construction of the nuclear power station important energy source guarantee that becomes national development gradually along with the security of the ripe nuclear power station of technology.
In the present nuclear power station, the structure of nuclear reactor is: form reactor cavity in containment, in the heap chamber pressure vessel is set.Pressure vessel is connected with cold leg and heat pipe section, injects cooling medium by cold leg, and pressure vessel is cooled off, and discharges by the heat pipe section then.
When nuclear reactor generation cold leg fracture accident or major accident, need take measures in time, reactor core is effectively cooled off.Yet because when having an accident, the environment in the containment is comparatively abominable usually, is difficult to realize the effective monitoring to inflammable gas in the containment.In addition, when the benchmark accident that meets design requirement, also be difficult to effectively monitor the content of the inflammable gas in the containment, be unfavorable for the effective continuous monitoring in the nuclear reactor.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of and can effectively monitor inflammable gas content, easy to use and reliable inflammable gas monitoring system.
Another technical matters to be solved by this invention is, provides a kind of and can effectively monitor inflammable gas content, easy to use and reliable inflammable gas monitoring method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of inflammable gas monitoring system is provided, comprises:
Inflammable gas set composite with entrance and exit is used to insert the air-flow that contains inflammable gas and carries out recombination reaction;
Be arranged on the outlet electric signal monitoring device in described exit, be used to monitor the outlet electric signal of described outlet;
With the data processing equipment that described outlet electric signal monitoring device is electrically connected, be used for handling according to the described outlet electric signal that monitors, draw inflammable gas the concentration in described air-flow corresponding with described outlet electric signal; And
With the output unit that described data processing equipment is connected, be used to export described concentration result.
In inflammable gas monitoring system of the present invention, described data processing equipment comprises the outlet signal acquisition module that is connected with described outlet electric signal monitoring device;
The memory module that is used for store electricity signal and combustable gas concentration corresponding relation data;
The output module that is connected with described output unit; And,
The data processing module that is connected with output module with described outlet signal acquisition module, memory module, be used for the outlet electric signal that described outlet signal acquisition module obtains handled and search from the corresponding relation data of described memory module obtaining corresponding combustable gas concentration, and export described output unit to by described output module.
In inflammable gas monitoring system of the present invention, be provided with inlet electric signal monitoring device in described porch, be used to detect the inlet electric signal of described porch;
This inflammable gas monitoring system also is provided with the pressure monitoring device of the pressure signal that is used to monitor described air-flow place environment.
In inflammable gas monitoring system of the present invention, described data processing equipment comprises the inlet electrical signal collection module that is connected with described inlet electric signal monitoring device;
The outlet electrical signal collection module that is connected with described outlet electric signal monitoring device;
The pressure signal acquisition module that is connected with described pressure monitoring device;
The memory module that is used for store electricity signal and vs. temperature data;
The output module that is connected with described output unit; And,
With described entry signal acquisition module, the outlet signal acquisition module, the pressure signal acquisition module, the data processing module that memory module is connected with output module, be used for the inlet electric signal that obtains according to described entry signal acquisition module, temperature in and the outlet temperature that obtains correspondence handled and searched to the outlet electric signal that described outlet signal acquisition module obtains from the corresponding relation data of described memory module, and calculate the vapour volume share of porch, and according to temperature in according to described temperature in and pressure signal, outlet temperature, the vapour volume share calculates density of hydrogen.
In inflammable gas monitoring system of the present invention, described inflammable gas set composite is non-active hydrogen set composite; Described inflammable gas is a hydrogen;
Described outlet electric signal monitoring device is an exit thermocouple.
In inflammable gas monitoring system of the present invention, described inlet electric signal monitoring device is the inlet thermopair.
The present invention also provides a kind of inflammable gas monitoring method, may further comprise the steps;
S1: the air-flow that contains inflammable gas enters the inflammable gas set composite from inlet, and carries out recombination reaction in described inflammable gas set composite, discharges from the outlet of described inflammable gas set composite then;
S2: the outlet electric signal of monitoring the exit of described inflammable gas set composite;
S3: handle to obtain inflammable gas the content in described air-flow corresponding with described outlet electric signal according to the electric signal that is monitored, and output.
In the described step S2 of inflammable gas monitoring method of the present invention, also detect the inlet electric signal of the porch of described inflammable gas set composite;
This step S2 comprises step S2-1: survey the inlet electric signal of described porch by the inlet thermopair that is arranged on described porch, and calculate the temperature in of described porch according to the described inlet electric signal that the entry signal acquisition module collects;
S2-2: survey the electric signal in described exit by the exit thermocouple that is arranged on described exit, and calculate the outlet temperature in described exit according to the outlet electric signal that the outlet signal acquisition module collects.
In inflammable gas monitoring method of the present invention, the curtage signal of described inlet thermopair and exit thermocouple carries out gathering continuously or at interval in the mode of 1～120 second run-down.
In the described step S3 of inflammable gas monitoring method of the present invention, comprise step S3-1:, calculate the vapour volume share of described porch according to water rerum natura table according to the temperature in of the porch that obtains;
S3-2: calculate density of hydrogen according to described temperature in, outlet temperature, vapour volume share.
Implement the present invention and have following beneficial effect: the electric signal of monitoring the exit of inflammable gas set composite by the electric signal monitoring device, handle by data processing equipment again and obtain the content of inflammable gas in air-flow, monitoring with inflammable gas can not be subjected to the restriction of accident severe environmental conditions, and can satisfy the monitoring of the inflammable gas of design basis accident and major accident simultaneously, and can realize the advantage of continuous monitoring.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of first embodiment of inflammable gas detection system of the present invention;
Fig. 2 is the structural representation of second embodiment of inflammable gas detection system of the present invention.
Embodiment
As shown in Figure 1, be first embodiment of inflammable gas monitoring system of the present invention, comprise inflammable gas set composite 110, outlet electric signal monitoring device, data processing equipment 130 and output unit 140 etc.This inflammable gas monitoring system can be applicable to the monitoring of the inflammable gas (particularly hydrogen) in the containment 150 of nuclear power station; Certainly, the needs that this system also can be applied to other carry out the occasion of inflammable gas monitoring, and are not limited to the application of nuclear power station.
In the present embodiment,, thereby can monitor the density of hydrogen in the containment 150 under design basis accident and the major accident situation, for person skilled and operator provide the accident treatment foundation with the monitoring of the hydrogen in the containment 150 that is applied to nuclear power station.
In the present embodiment, this inflammable gas set composite is non-active hydrogen set composite 110, has air flow inlet 111 and outlet 112.This outlet electric signal monitoring device adopts thermopair, comprises the exit thermocouple 120 that outlet 112 places are set, and is used to detect the electric signal at outlet 112 places, and this electric signal can be current signal or voltage signal.This non-active hydrogen set composite 110 and the exit thermocouple 120 common hydrogen measurement sensors of forming, this system can use one or more hydrogen measurement sensor, it can be installed in the higher position of local density of hydrogen under the accident conditions, for example the relevant position in the containments 150 such as containment 150 tops, crane ring corridor platform, ring loop wheel machine structure, steam generator top.
This exit thermocouple 120 is connected with data processing equipment 130 by lead, handles thereby the electric signal that monitors is sent to data processing equipment 130.In the present embodiment, this data processing equipment 130 is arranged on outside the containment 150, comprises outlet signal acquisition module 131, memory module 132, output module 133 and data processing module 134 etc.Certainly, data processing equipment 130 also can be arranged in the containment 150, and its installation site is unrestricted.
This outlet signal acquisition module 131 is connected with exit thermocouple 120, is used to gather the electric signal of exit thermocouple 120.For example, carry out gathering continuously or at interval in the mode of 1～120 second run-down, and send the electric signal that collects to data processing module 134.
This memory module 132 is used for store electricity signal and combustable gas concentration corresponding relation data, searches corresponding combustable gas concentration so that data processing module 134 to be provided according to electric signal.As shown in table 1, be the corresponding relation tables of data of voltage and density of hydrogen, this tabular has been enumerated the density of hydrogen of different thermopair materials, model correspondence.Understandable, this corresponding relation also can for electric current with the corresponding relation of density of hydrogen, also can adopt other different thermopair materials, model etc., and draw different corresponding relation data.Employing nickel chromium triangle silicon-nisiloy magnesium thermopair, Wolfram rhenium heat electric couple, platinum rhodium have been provided in the table respectively
30-platinum rhodium
6Thermopair respectively with the corresponding relation of density of hydrogen.Wherein, can feed the inflammable gas set composite, detect the voltage (or electric current) of thermopair then in the exit of inflammable gas set composite, obtain the data in the table 1 by hydrogen-containing gas streams with concentration known; Certainly, also can obtain the data of table 1, for example by calculating, test of many times etc. by other method.
Various thermocouple voltages of table 1 and density of hydrogen mapping table
This data processing module 134 is connected with output module 133 with outlet signal acquisition module 131, memory module 132 respectively, be used for handling according to the outlet electric signal, and from the corresponding relation data of memory module 132, search the combustable gas concentration that obtains correspondence, and export output unit 140 to by output module 133.This data processing module 134 can directly be searched corresponding combustable gas concentration output according to the outlet electric signal; Perhaps, after averaging by the outlet electric signal that will repeatedly gather, search corresponding combustable gas concentration output again.In addition, if do not have in the corresponding relation data and the identical data of outlet electric signal, then can or calculate corresponding combustable gas concentration and export according to nearby principle by the rule of setting (as linearity).
Output unit 140 is connected with data processing equipment 130, is used to export the result of density of hydrogen.This output unit 140 can be various output devices such as display, printer, and the content of its output can comprise hydrogen content, inlet 111 temperature, outlet 112 temperature etc., for person skilled and operator provide the accident treatment foundation.
When using this inflammable gas monitoring system to monitor, the air-flow that containment 150 contains inflammable gas 111 enters the inflammable gas set composite from entering the mouth, and in the inflammable gas set composite, carry out recombination reaction, discharge from the outlet 112 of inflammable gas set composite then.
Concrete, this inflammable gas set composite adopts non-active hydrogen set composite 110, and it adopts the platinum-rhodium alloy catalyzer as catalysis media 113.When the density of hydrogen in non-active hydrogen set composite 110 air-flows of flowing through reached or surpass the startup value of the platinum-rhodium alloy catalyzer in the non-active hydrogen set composite 110, non-active hydrogen set composite 110 started.The hydrogen compound action of palladium-platinum alloy catalyst starts threshold value and is generally density of hydrogen between 0.1%-2%.Be higher than at 4% o'clock at density of hydrogen and can reach higher catalysis composite effect,, and can adjust, as adopting ball bed structure, structure of honeycomb briquette, plank frame etc. according to the carrier structure of palladium-platinum alloy catalyst usually more than 90%.
Hydrogen-oxygen in non-active hydrogen set composite 110 is compound to be redox reaction, belongs to chemical heat release.After the process catalysis of catalyzer, exothermal effect will be more concentrated and remarkable.Flow through the air-flow of non-active hydrogen set composite 110 through after the compound action, and gas temperature is subjected to the themopositive reaction heat effect and raises.
Monitor the electric signal (curtage signal) of importing and exporting 112 places by the thermopair 120 that is installed in the non-active hydrogen set composite 110, and lead to outside the containment 150 through containment penetration, be input to data processing equipment 130 by lead.
The collection of the electric signal by outlet signal acquisition module 131 pairs of exit thermocouples 120 is for example carried out gathering continuously or at interval in the mode of 1～120 second run-down, and is transferred to data processing module 134.Data processing module 134 is according to the electric signal that collects outlet 112 places, according to the corresponding relation data of electric signal and the inflammable gas corresponding relation of thermopair, inquires about the concentration that calculates inflammable gas in the air-flow.
After obtaining the concentration of hydrogen, can pass through output unit 140, for example output such as display, printer is for person skilled and operator provide the accident treatment foundation.
As shown in Figure 2, be second embodiment of inflammable gas monitoring system of the present invention, comprise inflammable gas set composite, electric signal monitoring device, data processing equipment 230 and output unit 240 etc.This inflammable gas monitoring system can be applicable to the monitoring of the inflammable gas (particularly hydrogen) in the containment 250 of nuclear power station; Certainly, the needs that this system also can be applied to other carry out the occasion of inflammable gas monitoring, and are not limited to the application of nuclear power station.
In the present embodiment,, thereby can monitor the density of hydrogen in the containment 250 under design basis accident and the major accident situation, for person skilled and operator provide the accident treatment foundation with the monitoring of the hydrogen in the containment 250 that is applied to nuclear power station.
In the present embodiment, this inflammable gas set composite is non-active hydrogen set composite 210, has air flow inlet 211 and outlet 212.This electric signal monitoring device comprises inlet electric signal monitoring device, outlet electric signal monitoring device, can adopt thermopair, comprise the inlet thermopair 221 and the exit thermocouple 222 that are separately positioned on inlet 211 places and outlet 212 places, be used to detect the electric signal of inlet 211 and outlet 212.This non-active hydrogen set composite 210, inlet thermopair 221 and the exit thermocouple 222 common hydrogen measurement sensors of forming, this system can use one or more hydrogen measurement sensor, it can be installed in the higher position of local density of hydrogen under the accident conditions, for example the relevant position in the containments 250 such as containment top, crane ring corridor platform, ring loop wheel machine structure, steam generator top.
This inlet thermopair 221 is connected with data processing equipment 230 by lead with exit thermocouple 222, handles thereby the signal that monitors is sent to data processing equipment 230.In the present embodiment, this data processing equipment 230 is arranged on outside the containment 250, can comprise inlet electrical signal collection module 231, outlet electrical signal collection module 232, pressure signal acquisition module 233, memory module 234, output module 235 and data processing module 236.Certainly, data processing equipment 230 also can be arranged in the containment 250, and its installation site is unrestricted.
This inlet electrical signal collection module 231 and outlet electrical signal collection module 232 are connected by lead with enter the mouth thermopair 221 and exit thermocouple 222 respectively.This memory module 234 can store and curtage and vs. temperature table, and the thermopair material of this mapping table and employing, model etc. are relevant.By collecting the electric signal (as voltage or electric current) of inlet thermopair 221 and exit thermocouple 222, in electric signal and vs. temperature table, search, calculate corresponding temperature, thereby obtain entering the mouth 211 places and export the temperature at 212 places.As table 2, three kinds of thermopairs (nickel chromium triangle silicon-nisiloy magnesium thermopair, Wolfram rhenium heat electric couple, platinum rhodium have been provided
30-platinum rhodium
6Thermopair) voltage respectively with the mapping table of temperature; Certainly, also can be the mapping table of electric current and temperature.Understandable, corresponding relation can be set by experiment or set by calculating between magnitude of voltage and the temperature.
The voltage of three kinds of thermopairs of table 2 and the mapping table of temperature
This pressure signal acquisition module 233 is used to gather the pressure signal in the containment 250, and pressure signal is sent to data processing module 236.Understandable, can pressure signal be sent to pressure signal acquisition module 233 carry out the collection of pressure signal by in containment 250 or set composite 210, pressure sensor device 223 being set.
This data processing module 236 is connected with pressure signal acquisition module 233 with inlet electrical signal collection module 231, calculates the vapour volume share at 211 places that enter the mouth according to the temperature in that obtains and pressure signal.Concrete, when having an accident, the air humidity in the containment 250 is 100%, inlet 211 temperature according to monitoring air-flow can calculate vapo(u)rous dividing potential drop P according to water rerum natura table
SteamThereby, obtain: X
Steam=P
Steam/ P, wherein X
SteamBe the vapour volume share, P is the pressure signal that collects.
This data processing module 236 is connected with pressure signal acquisition module 233 with inlet electrical signal collection module 231, outlet electrical signal collection module 232 simultaneously, be used for calculating density of hydrogen in conjunction with predefined concentration-temperature-curtage contrast relationship according to temperature in, outlet temperature, vapour volume share.Understandable, concrete concentration-temperature-curtage can be set according to the catalyst support structures of non-active hydrogen set composite 210, recombination reaction speed, hydrogen-oxygen combined efficiency etc.
Output unit 240 is connected with data processing equipment 230, is used to export the result of density of hydrogen.This output unit 240 can be various output devices such as display, printer, and the content of its output can comprise hydrogen content, temperature in, outlet temperature etc., for person skilled and operator provide the accident treatment foundation.
Below be to adopt above-mentioned inflammable gas monitoring system to carry out the embodiment of the method for inflammable gas monitoring.The air-flow that containment 250 contains inflammable gas 211 enters the inflammable gas set composite from entering the mouth, and carries out recombination reaction in the inflammable gas set composite, discharges from the outlet 212 of inflammable gas set composite then.
Concrete, this inflammable gas set composite adopts non-active hydrogen set composite 210, and it adopts the platinum-rhodium alloy catalyzer as catalysis media 213.When the density of hydrogen in non-active hydrogen set composite 210 air-flows of flowing through reached or surpass the startup value of the platinum-rhodium alloy catalyzer in the non-active hydrogen set composite 210, non-active hydrogen set composite 210 started.The hydrogen compound action of palladium-platinum alloy catalyst starts threshold value and is generally density of hydrogen between 0.1%-2%.Be higher than at 4% o'clock at density of hydrogen and can reach higher catalysis composite effect,, and can adjust, as adopting ball bed structure, structure of honeycomb briquette, plank frame etc. according to the carrier structure of palladium-platinum alloy catalyst usually more than 90%.
Hydrogen-oxygen in non-active hydrogen set composite 210 is compound to be redox reaction, belongs to chemical heat release.After the process catalysis of catalyzer, exothermal effect will be more concentrated and remarkable.Flow through the air-flow of non-active hydrogen set composite 210 through after the compound action, and gas temperature is subjected to the themopositive reaction heat effect and raises.By being installed on the inlet thermopair 221 in the non-active hydrogen set composite 210, the exit thermocouple 222 monitoring inlet ports 211 at place, exit position, the temperature variation of outlet 212, produce electric signal (as the curtage signal), and lead to outside the containment 250 through containment 250 penetration pieces by lead, be input to data processing equipment 230.
By collection to the curtage signal of inlet thermopair 221, exit thermocouple 222, for example carry out gathering continuously or at interval, and be transferred to data processing equipment 230 in the mode of 1～120 second run-down, carry out the monitoring of gas flow temperature.The inlet electrical signal collection module 231 of data processing equipment 230 and outlet electrical signal collection module 232 are according to the electric signal that collects inlet 211 places and outlet 212 places, according to the electric signal of thermopair and the mapping table of temperature, calculate the gas flow temperature at inlet 211 places and the gas flow temperature at outlet 212 places.
After the gas flow temperature at 211 places that obtains entering the mouth, calculate the vapour volume share at inlet 211 places according to temperature in that obtains and pressure signal by data processing module 236.Concrete, when having an accident, the air humidity in the containment 250 is 100%, inlet 211 temperature according to monitoring air-flow can calculate vapo(u)rous dividing potential drop P according to water rerum natura table
SteamThereby, obtain: X
Steam=P
Steam/ P, wherein X
SteamBe the vapour volume share, P is the pressure signal that collects.
Then, according to the temperature in that obtains, outlet temperature, vapour volume share etc., calculate and data processing, draw current density of hydrogen according to concentration-temperature contrast relationship by data processing module 236.Given below is the example of the contrast relationship of a concentration-temperature, and certainly, formula that also can basis calculates the corresponding relation of corresponding concentration-temperature.
The chemical formula of hydrogen oxygen composite reaction is 2H
2+ O
2=2H
2O+2Q
RX, at 1bar, in the time of 25 ℃, if combination product H
2O is a gas, Q=242kJ/mol.
Suppose: 1) before the reaction: mixed gas total mole number: N
I, the air molal quantity:
The water vapour molal quantity:
Hydrogen molal quantity: n
H, temperature: T
I, gaseous tension: P
I
2) (suppose combination product H behind the oxyhydrogen reaction
2O is a gas): oxyhydrogen reaction efficiency factor: η, the gas total mole number:
The air molal quantity:
The water vapour molal quantity:
Temperature: T
F, pressure: P
F, air mole M
Air, air specific heat capacity at constant volume Cv
Air, water vapour mole M
Steam, water vapour specific heat capacity at constant volume Cv
Steam, hydrogen mole M
H2, hydrogen specific heat capacity at constant volume Cv
H2, every mol of hydrogen participates in reaction and produces hot Q
RX
Obtain following relational expression:
Suppose that hydrogen-oxygen is compound fully, hydrogen-oxygen compounding efficiency factor η=1, the pressure expression formula after finally obtaining burning, wherein, q
AirRepresentative burning back surplus air rising 1K (℃) required gross energy, q
SteamRepresentative burning back surplus water steam rising 1K (℃) required gross energy:
Heat expression formula after the burning:
Wherein:
The volume share of supposing the preceding water vapour of burning, air is respectively X
H, X
Steam, formula (3) can be converted to:
By the thermodynamic property of gas as can be known, along with the rising of temperature,
With
Also increase, the molal weight of burning back air also can reduce to some extent, supposes and adopts following related parameter values:
M
Air＝28g/mol
M
Steam＝18g/mol
Q
RX=242kJ/mol (product is a gas)
Calculating can obtain hydrogen combustion as shown in table 1 and heat result of calculation by analysis.
Table 1: hydrogen combustion heats analysis (unit: degree centigrade, products of combustion is a gas)
Concrete data corresponding relation is different according to catalyst support structures, density of hydrogen, recombination reaction speed, hydrogen-oxygen combined efficiency etc., the actual experience table of comparisons of getting non-active hydrogen set composite 210 test findings.
After by the concentration that calculates hydrogen, can pass through output unit 240, for example output such as display, printer is for person skilled and operator provide the accident treatment foundation.
In conjunction with the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1. an inflammable gas monitoring system is characterized in that, comprising:
Inflammable gas set composite with entrance and exit is used to insert the air-flow that contains inflammable gas and carries out recombination reaction;
Be arranged on the outlet electric signal monitoring device in described exit, be used to monitor the outlet electric signal of described outlet;
With the data processing equipment that described outlet electric signal monitoring device is electrically connected, be used for handling according to the described outlet electric signal that monitors, draw inflammable gas the concentration in described air-flow corresponding with described outlet electric signal; And
With the output unit that described data processing equipment is connected, be used to export described concentration result.
2. inflammable gas monitoring system according to claim 1 is characterized in that, described data processing equipment comprises the outlet signal acquisition module that is connected with described outlet electric signal monitoring device;
The memory module that is used for store electricity signal and combustable gas concentration corresponding relation data;
The output module that is connected with described output unit; And,
The data processing module that is connected with output module with described outlet signal acquisition module, memory module, be used for the outlet electric signal that described outlet signal acquisition module obtains handled and search from the corresponding relation data of described memory module obtaining corresponding combustable gas concentration, and export described output unit to by described output module.
3. inflammable gas monitoring system according to claim 1 is characterized in that, is provided with inlet electric signal monitoring device in described porch, is used to detect the inlet electric signal of described porch;
This inflammable gas monitoring system also is provided with the pressure monitoring device of the pressure signal that is used to monitor described air-flow place environment.
4. inflammable gas monitoring system according to claim 3 is characterized in that, described data processing equipment comprises the inlet electrical signal collection module that is connected with described inlet electric signal monitoring device;
The outlet electrical signal collection module that is connected with described outlet electric signal monitoring device;
The pressure signal acquisition module that is connected with described pressure monitoring device;
The memory module that is used for store electricity signal and vs. temperature data;
The output module that is connected with described output unit; And,
With described entry signal acquisition module, the outlet signal acquisition module, the pressure signal acquisition module, the data processing module that memory module is connected with output module, be used for the inlet electric signal that obtains according to described entry signal acquisition module, temperature in and the outlet temperature that obtains correspondence handled and searched to the outlet electric signal that described outlet signal acquisition module obtains from the corresponding relation data of described memory module, and calculate the vapour volume share of porch, and according to temperature in according to described temperature in and pressure signal, outlet temperature, the vapour volume share calculates density of hydrogen.
5. according to each described inflammable gas monitoring system of claim 1-4, it is characterized in that described inflammable gas set composite is non-active hydrogen set composite; Described inflammable gas is a hydrogen;
Described outlet electric signal monitoring device is an exit thermocouple.
6. according to claim 3 or 4 described inflammable gas monitoring systems, it is characterized in that described inlet electric signal monitoring device is the inlet thermopair.
7. an inflammable gas monitoring method is characterized in that, may further comprise the steps;
S1: the air-flow that contains inflammable gas enters the inflammable gas set composite from inlet, and carries out recombination reaction in described inflammable gas set composite, discharges from the outlet of described inflammable gas set composite then;
S2: the outlet electric signal of monitoring the exit of described inflammable gas set composite;
S3: handle to obtain inflammable gas the content in described air-flow corresponding with described outlet electric signal according to the electric signal that is monitored, and output.
8. inflammable gas monitoring method according to claim 7 is characterized in that, among the described step S2, also detects the inlet electric signal of the porch of described inflammable gas set composite;
This step S2 comprises step S2-1: survey the inlet electric signal of described porch by the inlet thermopair that is arranged on described porch, and calculate the temperature in of described porch according to the described inlet electric signal that the entry signal acquisition module collects;
S2-2: survey the electric signal in described exit by the exit thermocouple that is arranged on described exit, and calculate the outlet temperature in described exit according to the outlet electric signal that the outlet signal acquisition module collects.
9. inflammable gas monitoring method according to claim 8 is characterized in that, the curtage signal of described inlet thermopair and exit thermocouple carries out gathering continuously or at interval in the mode of 1～120 second run-down.
10. according to Claim 8 or 9 described inflammable gas monitoring methods, it is characterized in that described step S3 comprises step S3-1:, calculate the vapour volume share of described porch according to water rerum natura table according to the temperature in of the porch that obtains;
S3-2: calculate density of hydrogen according to described temperature in, outlet temperature, vapour volume share.
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| CN201310116155.7A CN103219054B (en) | 2010-07-22 | 2010-07-22 | Combustible gas monitoring system and method |
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| CN102937609A (en) * | 2012-11-01 | 2013-02-20 | 中国船舶重工集团公司第七一八研究所 | System for measuring hydrogen density in nuclear power plant containment vessel |
| CN103033441A (en) * | 2012-12-18 | 2013-04-10 | 重庆川仪分析仪器有限公司 | Method and device for analyzing concentration of gas in containment and gas analysis instrument |
| CN103165209A (en) * | 2011-12-12 | 2013-06-19 | 原子能源和替代能源委员会 | Process and apparatus for the reduction of degassing of tritiated waste made by nuclear industry |
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| JP2019132685A (en) * | 2018-01-31 | 2019-08-08 | 株式会社東芝 | Oxygen measurement device for storage container and oxygen sensor thereof |
| CN110440944A (en) * | 2019-08-19 | 2019-11-12 | 无锡台翔电子技术发展有限公司 | Motor temperature measurement method of the electric machine controller based on Hall sensor temperature profile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103165209A (en) * | 2011-12-12 | 2013-06-19 | 原子能源和替代能源委员会 | Process and apparatus for the reduction of degassing of tritiated waste made by nuclear industry |
| CN102566654A (en) * | 2011-12-22 | 2012-07-11 | 上海夏普电器有限公司 | Mechanical monitoring device used in high-risk environment |
| CN102937609A (en) * | 2012-11-01 | 2013-02-20 | 中国船舶重工集团公司第七一八研究所 | System for measuring hydrogen density in nuclear power plant containment vessel |
| CN102937609B (en) * | 2012-11-01 | 2014-10-22 | 中国船舶重工集团公司第七一八研究所 | System for measuring hydrogen density in nuclear power plant containment vessel |
| CN103033441A (en) * | 2012-12-18 | 2013-04-10 | 重庆川仪分析仪器有限公司 | Method and device for analyzing concentration of gas in containment and gas analysis instrument |
| CN103033441B (en) * | 2012-12-18 | 2016-01-13 | 重庆川仪分析仪器有限公司 | Gas concentration analytical approach, device and gas analyzer in containment |
| CN106128521A (en) * | 2016-06-23 | 2016-11-16 | 中国船舶重工集团公司第七八研究所 | A kind of self-excitation type hydrogen set composite |
| JP2019132685A (en) * | 2018-01-31 | 2019-08-08 | 株式会社東芝 | Oxygen measurement device for storage container and oxygen sensor thereof |
| CN110440944A (en) * | 2019-08-19 | 2019-11-12 | 无锡台翔电子技术发展有限公司 | Motor temperature measurement method of the electric machine controller based on Hall sensor temperature profile |
| CN110440944B (en) * | 2019-08-19 | 2021-02-02 | 无锡台翔电子技术发展有限公司 | Motor temperature measuring method of motor controller based on Hall sensor temperature characteristics |
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Address after: 518000 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: China General Nuclear Power Corporation Address before: 518000 Guangdong, Futian District, Yitian Road, building A, block, building on the whole floor of A1301-1320 13 Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. |