CN101915786B - System and method for monitoring combustible gas - Google Patents
System and method for monitoring combustible gas Download PDFInfo
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- CN101915786B CN101915786B CN 201010234910 CN201010234910A CN101915786B CN 101915786 B CN101915786 B CN 101915786B CN 201010234910 CN201010234910 CN 201010234910 CN 201010234910 A CN201010234910 A CN 201010234910A CN 101915786 B CN101915786 B CN 101915786B
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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 monitoring system and the method for inflammable gas, more particularly, relate to the system and method for the combustible gas monitoring in a kind of containment that may be used on nuclear power station.
Background technology
Along with improving constantly of the security of the ripe nuclear power station of technology, the construction of the nuclear power station important energy source guarantee that becomes national development gradually.
In present nuclear power station, the structure of nuclear reactor is: form reactor cavity in containment, in piling the chamber, pressure vessel is set.Pressure vessel is connected with cold leg and heat pipe section, injects cooling medium by cold leg, pressure vessel is carried out cooling, then discharges by the heat pipe section.
When nuclear reactor generation cold leg fracture accident or major accident, need to take measures in time, reactor core is carried out effective cooling.Yet due to when having an accident, the environment in containment is usually comparatively abominable, is difficult to realize the effective monitoring to inflammable gas in containment.In addition, when the benchmark accident that meets design requirement, also be difficult to effectively monitor the content of the inflammable gas in containment, be unfavorable for the effective continuous monitoring in 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 combustible 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 combustible gas monitoring method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of combustible gas monitoring system is provided, comprises:
Inflammable gas set composite with entrance and exit is used for accessing 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 for monitoring the outlet electric signal of described outlet;
The data processing equipment that is electrically connected to described outlet electric signal monitoring device is used for processing according to the described outlet electric signal that monitors, and draws the inflammable gas concentration in described air-flow corresponding with described outlet electric signal; And
The output unit that is connected with described data processing equipment is for the result of exporting described concentration.
In combustible 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 is processed and searched 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 combustible gas monitoring system of the present invention, be provided with entrance electric signal monitoring device in described porch, for detection of the entrance electric signal of described porch;
This combustible gas monitoring system also is provided with the pressure monitoring device be used to the pressure signal of monitoring described air-flow place environment.
In combustible gas monitoring system of the present invention, described data processing equipment comprises the entrance electrical signal collection module that is connected with described entrance 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, for the entrance electric signal that obtains according to described entry signal acquisition module, temperature in and the outlet temperature that obtains correspondence processed 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 according to described temperature in and pressure signal, and according to temperature in, outlet temperature, the vapour volume share calculates density of hydrogen.
In combustible gas monitoring system of the present invention, described inflammable gas set composite is non-active hydrogen set composite; Described inflammable gas is hydrogen;
Described outlet electric signal monitoring device is exit thermocouple.
In combustible gas monitoring system of the present invention, described entrance electric signal monitoring device is the entrance thermopair.
The present invention also provides a kind of combustible gas monitoring method, comprises the following steps;
S1: the air-flow that contains inflammable gas enters the inflammable gas set composite from entrance, and carries out recombination reaction in described inflammable gas set composite, then discharges from the outlet of described inflammable gas set composite;
S2: the outlet electric signal of monitoring the exit of described inflammable gas set composite;
S3: process according to the electric signal that monitors and obtain the inflammable gas content in described air-flow corresponding with described outlet electric signal, and output.
In the described step S2 of combustible gas monitoring method of the present invention, also detect the entrance electric signal of the porch of described inflammable gas set composite;
This step S2 comprises step S2-1: survey the entrance electric signal of described porch by the entrance thermopair that is arranged on described porch, and calculate the temperature in of described porch according to the described entrance 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 combustible gas monitoring method of the present invention, the curtage signal of described entrance thermopair and exit thermocouple carries out continuously in the mode of 1～120 second run-down or the interval gathers.
In the described step S3 of combustible gas monitoring method of the present invention, comprise step S3-1: according to the temperature in of the porch that obtains, calculate the vapour volume share of described porch according to water physical property table;
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, processed 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 simultaneously the monitoring of the inflammable gas of design basis accident and major accident, 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 accompanying drawing:
Fig. 1 is the structural representation of the first embodiment of inflammable gas detection system of the present invention;
Fig. 2 is the structural representation of the second embodiment of inflammable gas detection system of the present invention.
Embodiment
As shown in Figure 1, be the first embodiment of combustible 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 combustible 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, with the monitoring of the hydrogen in the containment 150 that is applied to nuclear power station, thereby can Monitoring Design benchmark accident and the major accident situation under density of hydrogen in containment 150, for person skilled and operator provide the accident treatment foundation.
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 for detection of the electric signal at outlet 112 places, this electric signal can be current signal or voltage signal.The common hydrogen measurement sensor that forms of this non-active hydrogen set composite 110 and exit thermocouple 120, this system can use one or more hydrogen measurement sensor, it can be arranged on the higher position of local density of hydrogen under accident conditions, such as 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 wire, processes 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 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 containment 150, and its installation site is unrestricted.
This outlet signal acquisition module 131 is connected with exit thermocouple 120, is used for gathering the electric signal of exit thermocouple 120.For example, carry out continuously or the interval collection 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 different thermopair materials, density of hydrogen corresponding to model.Understandable, this corresponding relation also can be for electric current from 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 respectively in table
30-platinum rhodium
6Thermopair respectively with the corresponding relation of density of hydrogen.Wherein, can pass into by the hydrogen-containing gas streams with concentration known the inflammable gas set composite, then detect the voltage (or electric current) of thermopair in the exit of inflammable gas set composite, obtain the data in table 1; Certainly, also can obtain by other method the data of table 1, such as passing through calculating, test of many times etc.
The various thermocouple voltages of table 1 and density of hydrogen mapping table
This data processing module 134 is connected with output module with outlet signal acquisition module 131, memory module 132 respectively and is connected, be used for processing according to the outlet electric signal, and search the combustable gas concentration that obtains correspondence from the corresponding relation data of memory module 132, 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 the outlet electric signal of multi collect is averaged, then search corresponding combustable gas concentration output.In addition, if do not have in the corresponding relation data and the identical data of outlet electric signal, can or calculate corresponding combustable gas concentration by the rule (as linearity) of setting according to nearby principle and export.
Output unit 140 is connected with data processing equipment 130, is used for the result of output density of hydrogen.This output unit 140 can be the various output devices such as display, printer, and the content of its output can comprise hydrogen content, entrance 111 temperature, outlet 112 temperature etc., for person skilled and operator provide the accident treatment foundation.
When using this combustible gas monitoring system to monitor, the air-flow that containment 150 contains inflammable gas enters the inflammable gas set composite from entrance 111, and carry out recombination reaction in the inflammable gas set composite, then discharge from the outlet 112 of inflammable gas set composite.
Concrete, this inflammable gas set composite adopts non-active hydrogen set composite 110, and it adopts the platinum-rhodium alloy catalyzer as catalysis medium 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 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%.Can reach higher catalysis composite effect at density of hydrogen higher than 4% the time, usually more than 90%, and can adjust according to the carrier structure of palladium-platinum alloy catalyst, as adopting ball bed structure, structure of honeycomb briquette, plank frame etc.
Hydrogen oxygen recombination in non-active hydrogen set composite 110 is redox reaction, belongs to chemical exothermal.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 compound action, and gas temperature is subjected to the themopositive reaction heat effect and raises.
Import and export the electric signal (curtage signal) at 112 places by thermopair 120 monitorings that are installed in non-active hydrogen set composite 110, and pass through containment penetration by wire and lead to outside containment 150, be input to data processing equipment 130.
The collection of the electric signal by outlet signal acquisition module 131 pairs of exit thermocouples 120 is for example carried out continuously in the mode of 1～120 second run-down or the interval gathers, and is transferred to data processing module 134.Data processing module 134 is according to the electric signal that collects outlet 112 places, and according to the corresponding relation data of electric signal and the inflammable gas corresponding relation of thermopair, query count obtains the concentration of inflammable gas in air-flow.
After obtaining the concentration of hydrogen, can pass through output unit 140, outputs such as display, printer is for person skilled and operator provide the accident treatment foundation.
As shown in Figure 2, be the second embodiment of combustible 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 combustible 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, with the monitoring of the hydrogen in the containment 250 that is applied to nuclear power station, thereby can Monitoring Design benchmark accident and the major accident situation under density of hydrogen in containment 250, for person skilled and operator provide the accident treatment foundation.
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 entrance electric signal monitoring device, outlet electric signal monitoring device, can adopt thermopair, comprise the entrance thermopair 221 and the exit thermocouple 222 that are separately positioned on entrance 211 places and export 212 places, for detection of the electric signal of entrance 211 and outlet 212.The common hydrogen measurement sensor that forms of this non-active hydrogen set composite 210, entrance thermopair 221 and exit thermocouple 222, this system can use one or more hydrogen measurement sensor, it can be arranged on the higher position of local density of hydrogen under accident conditions, such as the relevant position in the containments 250 such as containment top, crane ring corridor platform, ring loop wheel machine structure, steam generator top.
This entrance thermopair 221 is connected with exit thermocouple and is connected with data processing equipment 230 by wire, processes 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 containment 250, can comprise entrance 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 containment 250, and its installation site is unrestricted.
This entrance electrical signal collection module 231 be connected electrical signal collection module 232 and be connected with exit thermocouple with entrance thermopair 221 respectively and be connected by wire.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 the electric signal (as voltage or electric current) that collects entrance thermopair 221 and exit thermocouple 222, search, calculate corresponding temperature in electric signal and vs. temperature table, thereby obtain the temperature at entrance 211 places and outlet 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, can be also the mapping table of electric current and temperature.Understandable, between magnitude of voltage and temperature, corresponding relation can be set by experiment or set by calculating.
The voltage of three kinds of thermopairs of table 2 and the mapping table of temperature
This pressure signal acquisition module 233 is used for gathering the pressure signal in containment 250, and pressure signal is sent to data processing module 236.Understandable, can by at containment 250 or the interior pressure sensor device 223 that arranges of set composite 210, pressure signal be sent to pressure signal acquisition module 233 carry out the collection of pressure signal.
This data processing module 236 is connected with the pressure signal acquisition module with entrance electrical signal collection module 231 and is connected, and calculates the vapour volume share at entrance 211 places according to the temperature in that obtains and pressure signal.Concrete, when having an accident, the air humidity in containment 250 is 100%, entrance 211 temperature according to monitoring air-flow can calculate vapo(u)rous dividing potential drop P according to water physical property 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 the pressure signal acquisition module with entrance electrical signal collection module 231, outlet electrical signal collection module 232 simultaneously and is connected, be used for according to temperature in, outlet temperature, vapour volume share, calculate density of hydrogen in conjunction with predefined concentration-temperature-curtage contrast relationship.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 recombination efficient etc.
Output unit 240 is connected with data processing equipment 230, is used for the result of output density of hydrogen.This output unit 240 can be the 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 to adopt above-mentioned combustible gas monitoring system to carry out the embodiment of the method for combustible gas monitoring.The air-flow that containment 250 contains inflammable gas enters the inflammable gas set composite from entrance 211, and carries out recombination reaction in the inflammable gas set composite, then discharges from the outlet 212 of inflammable gas set composite.
Concrete, this inflammable gas set composite adopts non-active hydrogen set composite 210, and it adopts the platinum-rhodium alloy catalyzer as catalysis medium 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 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%.Can reach higher catalysis composite effect at density of hydrogen higher than 4% the time, usually more than 90%, and can adjust according to the carrier structure of palladium-platinum alloy catalyst, as adopting ball bed structure, structure of honeycomb briquette, plank frame etc.
Hydrogen oxygen recombination in non-active hydrogen set composite 210 is redox reaction, belongs to chemical exothermal.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 compound action, and gas temperature is subjected to the themopositive reaction heat effect and raises.By being installed on the entrance thermopair 221 in 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 pass through containment 250 penetration pieces by wire and lead to outside containment 250, be input to data processing equipment 230.
By the collection to the curtage signal of entrance thermopair 221, exit thermocouple 222, for example carry out continuously in the mode of 1～120 second run-down or the interval gathers, and be transferred to data processing equipment 230, carry out the monitoring of gas flow temperature.The entrance 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 entrance 211 places and outlet 212 places, according to the electric signal of thermopair and the mapping table of temperature, calculate the gas flow temperature and the gas flow temperature that exports 212 places at entrance 211 places.
After the gas flow temperature that obtains entrance 211 places, the vapour volume share that calculates entrance 211 places according to the temperature in that obtains and pressure signal by data processing module 236.Concrete, when having an accident, the air humidity in containment 250 is 100%, entrance 211 temperature according to monitoring air-flow can calculate vapo(u)rous dividing potential drop P according to water physical property table
SteamThereby, obtain: X
Steam=P
Steam/ P, wherein X
SteamBe the vapour volume share, P is the pressure signal that collects.
Then,, calculated and the data processing according to concentration-temperature contrast relationship according to the temperature in that obtains, outlet temperature, vapour volume share etc. by data processing module 236, draw current density of hydrogen.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 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 after oxyhydrogen reaction
2O is 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 fully compound, the efficiency factor η of hydrogen oxygen recombination=1, the pressure formula after finally being burnt, wherein, q
AirSurplus air rising 1K after the representative burning (℃) required gross energy, q
SteamResidue water vapour rising 1K after the representative burning (℃) required gross energy:
Heat expression formula after burning:
Wherein:
The volume share of supposing the front 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, after burning, the molal weight of 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 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 gas)
Concrete data corresponding relation is different according to catalyst support structures, density of hydrogen, recombination reaction speed, hydrogen oxygen recombination efficient 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, outputs such as display, printer is for person skilled and operator provide the accident treatment foundation.
The above is described embodiments of the invention by reference to the accompanying drawings; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (5)
1. a combustible gas monitoring system, is characterized in that,
Inflammable gas set composite with entrance and exit is used for the air-flow that contains inflammable gas is carried out recombination reaction; Described inflammable gas is hydrogen;
Be arranged on the outlet electric signal monitoring device in described exit, be used for monitoring the outlet electric signal of described outlet;
The data processing equipment that is electrically connected to described outlet electric signal monitoring device is used for processing according to the described outlet electric signal that monitors, and draws the inflammable gas concentration in described air-flow corresponding with described outlet electric signal;
The output unit that is connected with described data processing equipment is for the result of exporting described concentration;
Be provided with entrance electric signal monitoring device in described porch, for detection of the entrance electric signal of described porch; And
This combustible gas monitoring system also is provided with the pressure monitoring device be used to the pressure signal of monitoring described air-flow place environment;
Wherein, described data processing equipment comprises the entrance electrical signal collection module that is connected with described entrance 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, for the entrance electric signal that obtains according to described entry signal acquisition module, temperature in and the outlet temperature that obtains correspondence processed 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 according to described temperature in and pressure signal, and according to temperature in, outlet temperature, the vapour volume share calculates density of hydrogen.
2. combustible gas monitoring system according to claim 1, is characterized in that, described inflammable gas set composite is non-active hydrogen set composite;
Described outlet electric signal monitoring device is exit thermocouple.
3. combustible gas monitoring system according to claim 1 and 2, is characterized in that, described entrance electric signal monitoring device is the entrance thermopair.
4. a combustible gas monitoring method, is characterized in that, comprises the following steps;
S1: the air-flow that contains inflammable gas enters the inflammable gas set composite from entrance, and carries out recombination reaction in described inflammable gas set composite, then discharges from the outlet of described inflammable gas set composite; Described inflammable gas is hydrogen;
S2: the outlet electric signal of monitoring the exit of described inflammable gas set composite;
S3: process according to the outlet electric signal that monitors and obtain the inflammable gas content in described air-flow corresponding with described outlet electric signal, and output; Wherein,
In described step S2, also detect the entrance electric signal of the porch of described inflammable gas set composite;
Described step S2 comprises step S2-1: survey the entrance electric signal of described porch by the entrance thermopair that is arranged on described porch, and calculate the temperature in of described porch according to the described entrance 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;
Described step S3 comprises step S3-1: according to the temperature in of the porch that obtains, calculate the vapour volume share of described porch according to water physical property table;
S3-2: calculate density of hydrogen according to described temperature in, outlet temperature, vapour volume share.
5. combustible gas monitoring method according to claim 4, is characterized in that, the curtage signal of described entrance thermopair and exit thermocouple carries out continuously in the mode of 1～120 second run-down or the interval gathers.
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| FR2984003B1 (en) * | 2011-12-12 | 2014-01-10 | Commissariat Energie Atomique | METHOD AND DEVICE FOR REDUCING THE DEGASSING OF TRIUCED WASTE FROM THE 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 |
| 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 |
| 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 |
| JP6906454B2 (en) * | 2018-01-31 | 2021-07-21 | 株式会社東芝 | Oxygen measuring device for containment vessel and its oxygen sensor |
| 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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| DE3727207A1 (en) * | 1987-08-14 | 1989-02-23 | Siemens Ag | Device for recombining hydrogen and oxygen |
| US5492686A (en) * | 1991-07-29 | 1996-02-20 | Siemens Aktiengesellschaft | Process and device for recombining and/or igniting hydrogen contained in an H2 -air-steam mixture, preferably for nuclear power stations |
| CN2901504Y (en) * | 2006-05-25 | 2007-05-16 | 中国船舶重工集团公司第七一八研究所 | Hydrogen and oxygen compounding device without external power supply |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA02009701A (en) * | 2000-03-31 | 2003-03-27 | David Systems Technology Sl | System for controlling and eliminating hydrogen. |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3727207A1 (en) * | 1987-08-14 | 1989-02-23 | Siemens Ag | Device for recombining hydrogen and oxygen |
| US5492686A (en) * | 1991-07-29 | 1996-02-20 | Siemens Aktiengesellschaft | Process and device for recombining and/or igniting hydrogen contained in an H2 -air-steam mixture, preferably for nuclear power stations |
| CN2901504Y (en) * | 2006-05-25 | 2007-05-16 | 中国船舶重工集团公司第七一八研究所 | Hydrogen and oxygen compounding device without external power supply |
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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. |