阅读说明：本技术 一种安全壳内氢气浓度测量系统测试装置及测试方法 (A kind of concentration of hydrogen in containment vessel measuring system test device and test method ) 是由 冯雨 马如冰 郭强 元一单 于明锐 亓振锋 李炜 张祎王 王洪亮 于 2019-08-29 设计创作，主要内容包括：本发明涉及一种安全壳内氢气浓度测量系统测试装置及测试方法。所述的安全壳内氢气浓度测量系统测试装置包括安全壳模拟体、喷淋系统、气溶胶注入系统、氢气注入系统、氮气注入系统、去离子水注入系统、氢气检测系统、氢气浓度测量系统、控制系统,以及各连接管线。利用本发明的安全壳内氢气浓度测量系统测试装置,可以产生与安全壳内环境压力、环境温度和组分相同的混合气体,并可实现喷淋模拟和气溶胶模拟,从而验证安全壳内氢气浓度测量系统的精度及可用性。(The present invention relates to a kind of concentration of hydrogen in containment vessel measuring system test device and test methods.The concentration of hydrogen in containment vessel measuring system test device includes containment analogue body, spray system, aerosol injected system, hydrogen injection system, nitrogen injected system, deionized water injected system, hydrogen detection system, density of hydrogen measuring system, control system and each connecting pipeline.Utilize concentration of hydrogen in containment vessel measuring system test device of the invention, it can produce mixed gas identical with environmental pressure in containment, environment temperature and component, and can realize spray simulation and aerosol simulation, to verify the precision and availability of concentration of hydrogen in containment vessel measuring system.)

1. a kind of concentration of hydrogen in containment vessel measuring system test device, including containment analogue body, spray system, aerosol note Enter system, hydrogen injection system, nitrogen injected system, deionized water injected system, hydrogen detection system, density of hydrogen measurement system System, control system and each connecting pipeline, it is characterised in that: the containment analogue body includes pressure vessel, is held in pressure The adjustable electric heating device of heating location is equipped in device, deionized water is injected into pressure vessel bottom by deionized water injected system Deionized water heats by the electric heating device in portion；The spray system passes through circulating pump from pressure vessel bottom Water intaking, and spray is realized by the way that the dispersion nozzles at the top of pressure vessel are arranged in；The hydrogen detection system includes that setting is being pressed The sampling probe of different location, sampling probe are separately connected sampling line inside force container, and sampling line is through to pressure vessel It is external to be connect with the density of hydrogen measuring system.

2. concentration of hydrogen in containment vessel measuring system test device as described in claim 1, it is characterised in that: in pressure vessel The sampling line different location by variable diameter dislocation spiral in a manner of arrange, to improve the filter efficiency to aerosol.

3. concentration of hydrogen in containment vessel measuring system test device as claimed in claim 1 or 2, it is characterised in that: described to take Sample pipeline is through to outside pressure vessel in the form of probe tube harness, and sampling line band has heating device.

4. concentration of hydrogen in containment vessel measuring system test device as described in claim 1, it is characterised in that: the sampling is visited Head is internal to be equipped with serpentine flow path, and the flagella structural for stopping aerosol particle to pass through is equipped in serpentine flow path；Sampling probe exists It can stretch and move inside pressure vessel.

5. concentration of hydrogen in containment vessel measuring system test device as described in claim 1, it is characterised in that: the disperse spray Mouth is equipped with spray range regulation device, and spray range regulation device includes the sliding block being arranged in fixed link, sliding block and adjusting rod Connection, and the expansion angle of adjusting rod can be changed by changing the position of fixed link top shoe, if being arranged on adjusting rod Dry spray head, each spray head are equipped with the coordinate locating mechanism that can change spray head direction.

6. concentration of hydrogen in containment vessel measuring system test device as claimed in claim 1 or 5, it is characterised in that: the spray Leaching systematic pipeline is externally provided with cooling collar, and the medium for deionized water in cooling line is equipped in cooling collar.

7. concentration of hydrogen in containment vessel measuring system test device as described in claim 1, it is characterised in that: in pressure vessel Different height position is equipped with thermocouple, for measuring pressure vessel interior environment temperature and bottom deionized water temperature.

8. concentration of hydrogen in containment vessel measuring system test device as described in claim 1, it is characterised in that: the control system System is respectively to containment analogue body, spray system, aerosol injected system, hydrogen injection system, nitrogen injected system, deionization Water injected system carries out automation control, for realizing required experiment condition.

9. concentration of hydrogen in containment vessel measuring system test device as claimed in claim 8, it is characterised in that: the control system System is equipped with intelligent control module, and the heating location of electric heating device is adjusted by way of flange rotary, can be realized electricity and adds Customization heating power, fault diagnosis and the automatic compensation function of thermal device.

10. concentration of hydrogen in containment vessel measuring system test device as described in claim 1, it is characterised in that: the pressure The sight glass outer surface of force container straight part is coated with the conductive film that material is selenium oxide, for realizing sight glass heating Heat insulation function.

11. concentration of hydrogen in containment vessel measuring system test device as described in claim 1, it is characterised in that: the pressure Container connects vacuum pump by solenoid valve.

12. a kind of test method of the concentration of hydrogen in containment vessel measuring system using any described device of claim 1-11, Include the following steps:

(1) required pressure is evacuated to pressure vessel；

(2) hydrogen is injected into pressure vessel by hydrogen injection system, reservoir pressure is made to reach setting value；

(3) nitrogen is injected into pressure vessel by nitrogen injected system, reservoir pressure is made to reach setting value；

(4) deionized water is injected into pressure vessel by deionized water injected system, and liquid level is measured by liquidometer, made Reach target value；

(5) deionized water in pressure vessel is heated, and deionized water temperature is measured；

(6) it is fetched water by spray system from the deionized water of pressure vessel bottom, is sprayed from the dispersion nozzles at the top of pressure vessel, And the de-ionized water flow rate in spray pipe is adjusted to by desirable value by flow control valve；

(7) aerosol is injected into pressure vessel by aerosol injected system, aerosol in pressure vessel is made to reach desirable value；

(8) it the identical mixed gas of component, simulation spray and is simulated in containment after generating in pressure vessel with major accident After aerosol, the sampling probe for being arranged in different location inside pressure vessel is sampled measurement to mixed gas respectively, mixes Gas passes through sampling line respectively and is sent to the progress density of hydrogen measurement of density of hydrogen measuring system, and the mixed gas after measurement is most It is sent back to the measurement circulation that pressure vessel completes a mixed gas sample point eventually；

(9) after testing, deionized water and mixed gas are discharged from pressure vessel.

13. the test method of concentration of hydrogen in containment vessel measuring system as claimed in claim 12, it is characterised in that: step (5) when heating in the deionized water in pressure vessel, control system is according to thermocouple to pressure vessel bottom deionization The measuring signal of coolant-temperature gage, by adjust electric heating device heating location, change the heating power of electric heating device, make from The sub- coolant-temperature gage rate of climb is stablized；When thermocouple registration reaches target value, control system is passed through by intelligent control module The heating location for adjusting electric heating device, changes the heating power of electric heating device, remains unchanged deionized water temperature, completes Deionized water heating.

14. the test method of concentration of hydrogen in containment vessel measuring system as claimed in claim 12, it is characterised in that: step (6) when carrying out spray operation in, the coordinate locating mechanism of showerhead configurations measures the coordinate of spray head upper and lower ends midpoint respectively (X₁,Y₁,Z₁) and (X₂,Y₂,Z₂), subsequent control system can make coordinate locating mechanism be adjusted nozzle position, make X₁=X₂, Z₁=Z₂,Y₁-Y₂=sprinkler height, to make the direction of spray head always straight down.

15. the test method of concentration of hydrogen in containment vessel measuring system as claimed in claim 12, it is characterised in that: step (8) sampling probe can free extension be mobile in pressure vessel in, and the inside that sampling range can cover entire pressure vessel is empty Between.

Technical field

The invention belongs to nuclear safety control technology fields, and in particular to a kind of concentration of hydrogen in containment vessel measuring system test Device.

Background technique

It is to cause npp safety shell to fail and then lead to one of important threat of radioactive release, national core that hydrogen, which fires, Security bureau proposes more specific requirement to concentration of hydrogen in containment vessel measurement after nuclear power plant's major accident, domestic and international more mechanisms The research and development of the density of hydrogen measuring system are carried out.Due to being high temperature, high pressure in npp safety shell after major accident and containing The atmosphere of a large amount of vapor, and generated along with spray and aerosol.Therefore these density of hydrogen measuring systems Test and calibration cannot use the calibrating gas of normal temperature and pressure, but need the special dress of environmental condition in energy simulating Safety shell It sets.

Chinese patent 201410539281.8 " experimental system of simulation Nuclear Safety shell major accident operating condition and its realization side Experimental system disclosed in method " includes an experiment container, and the first pressure sensor in experiment container is arranged in, and passes through multiple spot heat The data collection system that galvanic couple is connect with experiment container, and connect with experiment container exhaust pipe, air supply system, Hydrogen supply system, spray system, aerosol supply system, cable fire product supply system, the online supply system of vapor And sampling pipe.The experimental system is mainly used for testing the hydrogen performance that disappears of passive hydrogen recombiner, is that hydrogen is compound The research and design of device provide reference standard.But concentration of hydrogen in containment vessel measures after the experimental system cannot achieve major accident The test of system availability and measurement accuracy.

Summary of the invention

It is an object of the invention to research and develop for concentration of hydrogen in containment vessel measuring system after current nuclear power plant's major accident Needs, concentration of hydrogen in containment vessel measuring system test device after a kind of major accident is provided, is sent out for verifying in nuclear power plant Concentration of hydrogen in containment vessel measuring system precision and availability after raw major accident.

Technical scheme is as follows: a kind of concentration of hydrogen in containment vessel measuring system test device, including containment Analogue body, spray system, aerosol injected system, hydrogen injection system, nitrogen injected system, deionized water injected system, hydrogen Gas detection system, density of hydrogen measuring system, control system and each connecting pipeline, wherein the containment analogue body packet Pressure vessel is included, the adjustable electric heating device of heating location is equipped in pressure vessel, deionized water injected system is by deionization Water is injected into pressure vessel bottom, is heated by the electric heating device to deionized water；The spray system is by following Ring pump is fetched water from pressure vessel bottom, and realizes spray by the way that the dispersion nozzles at the top of pressure vessel are arranged in；The hydrogen inspection Examining system includes the sampling probe that different location inside pressure vessel is arranged in, and sampling probe is separately connected sampling line, sampling Pipeline is through to outside pressure vessel and connect with the density of hydrogen measuring system.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the institute in pressure vessel It states sampling line to arrange in such a way that variable diameter dislocation is spiraled in different location, to improve the filter efficiency to aerosol.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the sampling line with The form of probe tube harness is through to outside pressure vessel, and sampling line band has heating device.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein in the sampling probe Portion is equipped with serpentine flow path, and the flagella structural for stopping aerosol particle to pass through is equipped in serpentine flow path；Sampling probe is in pressure It can stretch and move inside container.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the dispersion nozzles are set There is spray range regulation device, spray range regulation device includes the sliding block being arranged in fixed link, and sliding block is connect with adjusting rod, And the expansion angle of adjusting rod can be changed by changing the position of fixed link top shoe, several sprays are set on adjusting rod Head, each spray head are equipped with the coordinate locating mechanism that can change spray head direction.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the spray system pipe Line is externally provided with cooling collar, and the medium for deionized water in cooling line is equipped in cooling collar.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein in pressure vessel difference Height and position is equipped with thermocouple, for measuring pressure vessel interior environment temperature and bottom deionized water temperature.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the control system point It is other that containment analogue body, spray system, aerosol injected system, hydrogen injection system, nitrogen injected system, deionized water are infused Enter system and carry out automation control, for realizing required experiment condition.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the control system is set There is intelligent control module, the heating location of electric heating device is adjusted by way of flange rotary, can be realized electric heater Customization heating power, fault diagnosis and the automatic compensation function of part.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the pressure vessel The sight glass outer surface of straight part is coated with the conductive film that material is selenium oxide, for realizing sight glass heating and thermal insulation function Energy.

Further, concentration of hydrogen in containment vessel measuring system test device as described above, wherein the pressure vessel is logical Cross solenoid valve connection vacuum pump.

A kind of test method of the concentration of hydrogen in containment vessel measuring system using above-mentioned apparatus, includes the following steps:

(1) required pressure is evacuated to pressure vessel；

(2) hydrogen is injected into pressure vessel by hydrogen injection system, reservoir pressure is made to reach setting value；

(3) nitrogen is injected into pressure vessel by nitrogen injected system, reservoir pressure is made to reach setting value；

(4) deionized water is injected into pressure vessel by deionized water injected system, and high by liquidometer measurement liquid level Degree, makes up to target value；

(5) deionized water in pressure vessel is heated, and deionized water temperature is measured；

(6) it is fetched water by spray system from the deionized water of pressure vessel bottom, from the dispersion nozzles at the top of pressure vessel It sprays, and the de-ionized water flow rate in spray pipe is adjusted to by desirable value by flow control valve；

(7) aerosol is injected into pressure vessel by aerosol injected system, aerosol in pressure vessel is made to reach institute It needs to be worth；

(8) after generating in pressure vessel with major accident the identical mixed gas of component in containment, simulation spray and After simulating aerosol, the sampling probe for being arranged in different location inside pressure vessel is sampled measurement to mixed gas respectively, Mixed gas passes through sampling line respectively and is sent to the progress density of hydrogen measurement of density of hydrogen measuring system, the gaseous mixture after measurement Body is finally sent back to the measurement circulation that pressure vessel completes a mixed gas sample point；

(9) after testing, deionized water and mixed gas are discharged from pressure vessel.

Further, the test method of concentration of hydrogen in containment vessel measuring system as described above is held pressure in step (5) When deionized water in device is heated, control system believes the measurement of pressure vessel bottom deionized water temperature according to thermocouple Number, by adjusting the heating location of electric heating device, changes the heating power of electric heating device, make raising speed in deionized water temperature Degree is stablized；When thermocouple registration reaches target value, control system is by intelligent control module, by adjusting electric heating device Heating location, change the heating power of electric heating device, remain unchanged deionized water temperature, complete deionized water heating.

Further, the test method of concentration of hydrogen in containment vessel measuring system as described above, step are sprayed in (6) When operation, the coordinate locating mechanism of showerhead configurations measures the coordinate (X of spray head upper and lower ends midpoint respectively₁,Y₁,Z₁) and (X₂,Y₂,Z₂), subsequent control system can make coordinate locating mechanism be adjusted nozzle position, make X₁=X₂,Z₁=Z₂,Y₁-Y₂ =sprinkler height, to make the direction of spray head always straight down.

Further, the test method of concentration of hydrogen in containment vessel measuring system as described above, sampling probe in step (8) It free extension can be moved in pressure vessel, sampling range can cover the inner space of entire pressure vessel.

Beneficial effects of the present invention are as follows:

(1) the containment analogue body that the present invention designs, by holding to pressure to injection hydrogen and nitrogen inside pressure vessel The mode of device bottom deionized water heating just can produce with the identical mixed gas of component in containment after major accident, be not necessarily to it Remaining complexity gas generating system easier, quick, accurate can simulate the internal environment item of containment after major accident Part, such as environment temperature, environmental pressure important parameter；

(2) steam is generated by way of to the heating of container bottom deionized water, temperature, pressure, gas group may be implemented Divide, the pressure vessel interior environmental conditions that flow field is more uniform, is conducive to concentration of hydrogen in containment vessel measurement system after major accident The measurement of system, and deionized water-vapor-deionized water circulation inside pressure vessel may be implemented, greatly reduce reality Test cost；

(3) the containment analogue body that the present invention designs is simulated tight in such a way that pressure vessel bottom draws water top water spray Spray in containment, saves the manufacturing cost of external spray system, also makes the system structure of test device more after weight accident Simply；It, can be to avoid the water temperature in outer tank well below pressure using pressure vessel bottom deionized water as spray-water Environment maximum of condition fluctuation problem in pressure vessel caused by steam temperature in force container in environment；And pressure vessel Bottom deionized water temperature, pressure and upper part spatial mixing gas phase are same, are easier to realize using the mode of interior circulation；

(4) the containment analogue body that the present invention designs simulates containment after major accident in such a way that aerosol injects Interior aerosol has sampling probe and centainly keeps away outlet capacity and filter capacity by carrying out special designing to sampling probe；

(5) the containment analogue body that the present invention designs is equipped with high-acruracy survey instrument, to accurately calculate in pressure vessel Each gas component concentrations in portion.

Detailed description of the invention

Fig. 1 is concentration of hydrogen in containment vessel measuring system schematic structural diagram of testing device after major accident；

Fig. 2 a is sampling probe the schematic diagram of the section structure；

Fig. 2 b is sampling probe three dimensional structure diagram；

Fig. 3 is sampling line schematic cross-section；

Fig. 4 is sampling probe inside turn runner schematic diagram of internal structure；

Fig. 5 is that dispersion nozzles spray range regulation device schematic diagram；

Fig. 6 is the accurate coordinate locating mechanism schematic diagram of spray head；

Fig. 7 is intellectualized module control flow chart；

Fig. 8 is sampling line arrangement schematic diagram.

Specific embodiment

The present invention is described in detail below with reference to the accompanying drawings and embodiments.

The system of concentration of hydrogen in containment vessel measuring system test device after a kind of illustrative major accident of the invention Composition is as shown in Figure 1, include containment analogue body, spray system, aerosol injected system, hydrogen injection system, nitrogen injection System, deionized water injected system, hydrogen detection system, density of hydrogen measuring system, control system and each connecting pipeline. Wherein, containment analogue body include pressure vessel 1, electrically heated rod 2, vacuum pump 13, thermocouple TF1, TF2, TF3, TF4, TF5, Pressure transmitter PT1, liquidometer LDP1, solenoid valve 6a, 6h, safety valve 10 and each connecting pipeline；The spray system packet Include circulating pump 14, dispersion nozzles 5, thermocouple TF6, pressure transmitter PT2, PT3, fluid flowmeter F1, solenoid valve 6b, flow tune Save valve 7 and each connecting pipeline；The aerosol injected system includes aerosol generating device 16, solenoid valve 6e, and each Connecting pipeline；The hydrogen injection system includes High Pressure Hydrogen gas cylinder 11, pressure reducing valve 8a, solenoid valve 6c and each connecting pipeline； The nitrogen injected system includes high-pressure nitrogen bottle 12, pressure reducing valve 8b, solenoid valve 6d and each connecting pipeline；Described goes Ionized water injected system includes deionization water tank 17, water injecting pump 15, solenoid valve 6g, check-valves 9 and each connecting pipeline；It is described Hydrogen detection system include sampling probe 3a, 3b, 3c, 3d, sampling line 4a, 4b, 4c, 4d, thermocouple TF7, pressure inverting Device PT4, solenoid valve 6f.

The sight glass outer surface of 1 straight part of pressure vessel is coated with the conductive film that material is selenium oxide, for realizing Sight glass heating and heat preserving function.As shown in fig. 7, control system 19 has intelligent control module, pass through the side of flange rotary Formula adjusts the heating location of electrically heated rod 2, and customization heating power, fault diagnosis and the automatic benefit of electrically heated rod 2 may be implemented Repay function.Electrically heated rod 2 is used for 1 bottom deionized water of heated pressure container, and control system 19 holds pressure according to thermocouple TF5 The measuring signal of 1 bottom deionized water temperature of device, adjusting 2 heating power of electrically heated rod stablizes deionized water rate of rise in temperature Or it remains unchanged.When electrically heated rod 2 breaks down, control system 19 can increase the electrically heated rod of remaining normal work automatically 2 heating powers realize automatic compensation function.Safety valve 10 is provided at the top of pressure vessel 1, for preventing 1 superpressure of pressure vessel It is impaired.Pressure vessel 1 is separately connected solenoid valve 6a, 6h, solenoid valve 6a connection vacuum pump 13, for pressure vessel 1 to be vacuumized, Solenoid valve 6h is for deionized water to be discharged from pressure vessel 1.Control system 19 can be respectively to containment analogue body, spray system System, aerosol injected system, hydrogen injection system, nitrogen injected system, deionized water injected system carry out automation control, use Experiment condition needed for realizing, such as varying environment temperature, varying environment pressure, different mixture gas component concentrations.Hydrogen Bottle 11 passes sequentially through pressure reducing valve 8a and solenoid valve 6c is connected with pressure vessel 1, for injecting hydrogen into pressure vessel 1.Nitrogen Gas cylinder 12 passes sequentially through pressure reducing valve 8b and solenoid valve 6d is connected with pressure vessel 1, for injecting nitrogen into pressure vessel 1. Aerosol generating device 16 is connected by solenoid valve 6e with pressure vessel 1, for injecting aerosol into pressure vessel 1.It goes Ionized water tank 17 passes sequentially through solenoid valve 6g, water injecting pump 15, check-valves 9 and is connected with pressure vessel 1, is used for pressure vessel 1 Interior injection deionized water.Thermocouple TF1, TF2, TF3, TF4, TF5 are installed on 1 different height of pressure vessel, for measuring pressure 1 interior environment temperature of force container and bottom deionized water temperature.Pressure transmitter PT1 is installed on pressure vessel 1, for measuring 1 internal environment pressure of pressure vessel.Liquidometer LDP1 is installed on pressure vessel 1, for measuring 1 bottom deionization of pressure vessel Aqueous position.1 bottom of pressure vessel connects solenoid valve 6b, then is sequentially connected circulating pump 14, flow control valve 7 and fluid flowmeter F1 is finally through to inside pressure vessel 1, and is connect with dispersion nozzles 5, realizes spray for system self-loopa.Dispersion nozzles 5 There is the spray range regulation device there are multiple spray heads in inside, as shown in figure 5, can be by changing sliding block 24 in fixed link 23 The angle of flare set, and then change adjusting rod 25 adjusts spray range, and adjusting rod 25 is equipped with several spray heads 26, and each spray head 26 is matched There is accurate coordinate locating mechanism, change spray head direction by way of adjusting three-dimensional coordinate in real time, makes spray head always straight down, The sparse degree of spray and its liquid-drop diameter can also be limited.The accurate coordinate locating mechanism that spray head is furnished with can be measured accurately respectively Coordinate (the X of spray head upper and lower ends midpoint₁,Y₁,Z₁) and (X₂,Y₂,Z₂), subsequent 19 Hui Shi precise positioning mechanism of control system Nozzle position is adjusted, X is made₁=X₂,Z₁=Z₂,Y₁-Y₂=sprinkler height makes the direction of spray head straight down, such as Fig. 6 institute Show.Pressure transmitter PT2 is connected on spray system pipeline, for measuring deionization hydraulic pressure in 14 inlet spray pipe of circulating pump Power.It is separately connected pressure transmitter PT3 and thermocouple TF6 on spray system pipeline, is respectively used to measurement 5 inlet of dispersion nozzles Deionized water pressure and temperature in spray pipe.There is cooling collar outside spray system pipeline, medium is alcohol, water in cooling collar Or other boiling points are lower than 100 DEG C of organic matters, for the deionized water in cooling line.Sampling probe 3a, 3b, 3c, 3d connect respectively Sampling line 4a, 4b, 4c, 4d are met, 1 outside of pressure vessel and solenoid valve 6f are through in the form of probe tube harness, is reconnected Density of hydrogen measuring system 18 is finally connected with pressure vessel 1, for hydrogen measurement and recycling.Wherein, sampling probe 3a, 3b, 3c, 3d can cover entire 1 inner space of pressure vessel, structure such as Fig. 2 a, Fig. 2 b with free extension and movement, range Shown, it is the serpentine flow path 20 of 4mm that, which there is multilayer diameter in inside, is equipped with flagella structural 22 in serpentine flow path 20, as shown in figure 4, with Further intensive filtration effect, sampling probe 3a, 3b, 3c, 3d are used to reduce the flow of gas sampled and filter diameter is greater than 0.2 The aerosol particle of micron.When gas sampled passes through serpentine flow path 20, flagella structural 22 can stop a small amount of in gas sampled Aerosol particle passes through, and further improves the filter efficiency of sampling probe 3a, 3b, 3c, 3d.Sampling line 4a, 4b, 4c, 4d It is arranged in such a way that variable diameter dislocation is spiraled in 1 inside different location of pressure vessel, the diameter of each circle coiling is all different, and position It is staggered according to this, as shown in figure 8, for further increasing the filter efficiency to aerosol.Sampling line 4a, 4b, 4c, 4d are in pressure 1 external harmoniousness of container is the probe tube harness with heating device 21, as shown in figure 3, the heating temperature of heating device can basis Experiment condition carries out automation adjusting by control system 19, and the vapor for guaranteeing in mixed gas will not condense.

Concentration of hydrogen in containment vessel measuring system test device is tested after a kind of major accident of the invention of above-mentioned example Card principle of density of hydrogen measuring system precision and availability after major accident occurs for nuclear power plant is as follows:

In order to generate concentration of hydrogen in containment vessel measuring system test device after major accident and safety after major accident The identical mixed gas of component in shell is broadly divided into following steps: opening solenoid valve 6a, vacuum pump 13, takes out very to pressure vessel 1 Sky closes solenoid valve 6a, the completion of vacuum pump 13 vacuumizes to required pressure.Adjusting pressure reducing valve 8a makes the required pressure of its registration, Open solenoid valve 6c, enter the hydrogen in High Pressure Hydrogen gas cylinder 11 inside pressure vessel 1, when pressure transmitter PT1 registration with subtract When pressure valve 8a is identical, closes solenoid valve 6c and complete hydrogen injection.Adjusting pressure reducing valve 8b makes the required pressure of its registration, opens electromagnetism Valve 6d enters the nitrogen in high-pressure nitrogen bottle 12 inside pressure vessel 1, when pressure transmitter PT1 registration and pressure reducing valve 8b phase Meanwhile it closing solenoid valve 6d and completing nitrogen injection.Solenoid valve 6g, water injecting pump 15 are opened, the deionization in deionization water tank 17 is made Water enters inside pressure vessel 1, when liquidometer LDP1 registration reaches target value, closes solenoid valve 6g and the completion of water injecting pump 15 is gone Ionized water injection.It opens electrically heated rod 2 to heat 1 bottom deionized water of pressure vessel, control system 19 can add electricity The heating location and heating power of hot pin 2 carry out automation adjusting.Electrically heated rod 2 is used for 1 bottom deionization of heated pressure container Water, control system 19, to the measuring signal of 1 bottom deionized water temperature of pressure vessel, pass through flange rotary according to thermocouple TF5 Mode adjust heating location, change 2 heating power of electrically heated rod, stablize deionized water rate of rise in temperature, work as thermocouple When TF5 registration reaches target value, control system 19 has intelligent control module, and electric heating is adjusted by way of flange rotary The heating location of stick 2 changes 2 heating power of electrically heated rod, remains unchanged deionized water temperature, completes deionized water heating.

In order to make concentration of hydrogen in containment vessel measuring system test device simulation spray after major accident, solenoid valve is opened 6b, circulating pump 14, flow control valve 7 spray the deionized water of 1 bottom of pressure vessel inside dispersion nozzles 5, pass through flow De-ionized water flow rate in spray pipe is adjusted to desirable value by regulating valve 7, is shown with fluid flowmeter F1.

In order to make concentration of hydrogen in containment vessel measuring system test device simulation aerosol after major accident, solenoid valve is opened 6e, aerosol generating device 16 make aerosol generating device 16 enter pressure vessel 1, needed for the injection rate of aerosol reaches Value closes solenoid valve 6e, aerosol generating device 16 completes aerosol injection.

After a kind of major accident in concentration of hydrogen in containment vessel measuring system test device test process, work as pressure vessel 1 bottom deionized water liquid level is lower than target value, opens solenoid valve 6g, water injecting pump 15, makes the deionized water in deionization water tank 14 Into inside pressure vessel 1, when liquidometer LDP1 registration reaches target value, close solenoid valve 6g and water injecting pump 15 completion go from Sub- water supplement.

After a kind of major accident in concentration of hydrogen in containment vessel measuring system test device test process, work as pressure vessel 1 bottom deionized water liquid level is higher than target value, opens solenoid valve 6h, and 1 bottom deionized water of pressure vessel is discharged, works as liquidometer When LDP1 registration reaches target value, closes solenoid valve 6h and complete deionized water discharge.

It is generated respectively by concentration of hydrogen in containment vessel measuring system test device after a kind of major accident and major accident Afterwards in containment after the identical mixed gas of component, simulation spray and simulation aerosol, it is arranged in the different positions in 1 inside of pressure vessel Sampling probe 3a, 3b, 3c, the 3d set is sampled measurement to mixed gas respectively, mixed gas pass through respectively sampling line 4a, 4b, 4c, 4d are sent to density of hydrogen measuring system 18 and carry out density of hydrogen measurement, and the mixed gas after measurement is finally sent back to pressure Force container 1 completes the measurement circulation of a mixed gas sample point.

After concentration of hydrogen in containment vessel measuring system test device is tested after a kind of major accident, solenoid valve is opened 6h make 1 bottom deionized water of pressure vessel be discharged, when liquidometer LDP1 registration be 0, and pressure transmitter PT1 registration be 1bar When, it closes solenoid valve 6h and completes deionized water and mixed gas discharge.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.If in this way, belonging to the model of the claims in the present invention and its equivalent technology to these modifications and changes of the present invention Within enclosing, then the present invention is also intended to include these modifications and variations.