CN110068434B - Pulse type cyclohexane gas cold generator for detecting leakage rate of iodine adsorber - Google Patents
Pulse type cyclohexane gas cold generator for detecting leakage rate of iodine adsorber Download PDFInfo
- Publication number
- CN110068434B CN110068434B CN201910248298.0A CN201910248298A CN110068434B CN 110068434 B CN110068434 B CN 110068434B CN 201910248298 A CN201910248298 A CN 201910248298A CN 110068434 B CN110068434 B CN 110068434B
- Authority
- CN
- China
- Prior art keywords
- cyclohexane
- leading
- gasified
- pipe
- compressed air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/002—Detection of leaks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention relates to a pulse type cyclohexane gas cold generator for detecting the leakage rate of an iodine adsorber, which comprises a gasification cavity, wherein a hexane liquid adding component, an air tightness checking component, a compressed air introducing component and a gasified cyclohexane gas leading-out component are connected with the gasification cavity; the gasified cyclohexane gas leading-out component comprises a gasified cyclohexane gas leading-out pipe connected with the gasification chamber, a quick connector and a switch valve are mounted on the gasified cyclohexane gas leading-out pipe, and the quick connector is connected with a test system of the iodine adsorber. The generator has the advantages of easy control of gas generation conditions, convenient operation and good field adaptability, and all performance indexes can meet the requirements of leakage rate tests.
Description
Technical Field
The invention relates to leak detection test equipment in the nuclear field, in particular to a pulse type cyclohexane gas cold generator for detecting the leakage rate of an iodine adsorber.
Background
The iodine adsorber of the nuclear air purification system is key equipment for controlling the radioactive iodine of the effluent to achieve safe discharge, and ensuring that the iodine adsorber is in a good state is an important link for reducing radioactive substance release source items and ensuring the safe operation of a reactor. In order to ensure the safe and reliable operation of the nuclear air purification system and ensure that the exhaust of the ventilation system of the nuclear facility meets the effluent discharge limit value required by the national relevant standard, a field test of leakage rate detection must be carried out before the operation of the newly installed iodine adsorber, and a field test of periodic leakage rate detection must be carried out during the operation of the installed iodine adsorber to evaluate the functional effectiveness of the iodine adsorber.
The methods for confirming the effectiveness of the iodine filter include, for example, the freon method, the radioactive methyl iodine method, and the cyclohexane method. The cyclohexane method has good superiority when validity confirmation is carried out on the iodine adsorber ventilation system, the nuclear island ventilation system and the like in the habitable space (a central control room and an emergency command center) of the nuclear power station personnel, so that the radiation safety problem caused by possible radioactive leakage when the iodine adsorber performance test is carried out on the habitable space and the nuclear island ventilation system of the nuclear power station personnel is avoided, and meanwhile, the cyclohexane method can replace a Freon method to carry out iodine adsorber leakage rate test on ventilation systems of third-generation nuclear power, CNP300, CANDU reactors and the like, so that the use of Freon can be effectively reduced, and the damage to the ozone layer can be relieved.
When a cyclohexane method is used for carrying out a leakage rate detection test of an iodine adsorber, cyclohexane gas with a certain concentration is injected into a preset position at the upstream of a ventilation system of the iodine adsorber by using a cyclohexane gas generator, the upstream sampling port and the downstream sampling port are used for sampling and measuring the concentrations of upstream and downstream gas samples respectively, and whether the mechanical leakage rate of the iodine adsorber meets the standard requirement or not is judged according to the ratio of the upstream and downstream concentrations, wherein the safe and stable injection of the cyclohexane gas is one of key factors for smooth performance of the whole test. Therefore, a pulse type cyclohexane gas cold generator is developed for the field leakage rate detection test of the iodine adsorber of the ventilation system of the nuclear facility, and the product performance completely meets the design requirement.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a pulse type cyclohexane gas cold generator for detecting the leakage rate of an iodine adsorber.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the pulse type cyclohexane gas cold generator for detecting the leakage rate of the iodine adsorber comprises a gasification cavity, wherein a hexane liquid adding component, an air tightness checking component, a compressed air introducing component and a gasified cyclohexane gas leading-out component are connected with the gasification cavity;
the gasified cyclohexane gas leading-out component comprises a gasified cyclohexane gas leading-out pipe connected with the gasification chamber, a quick connector and a switch valve are mounted on the gasified cyclohexane gas leading-out pipe, and the quick connector is connected with a test system of the iodine adsorber.
Furthermore, the compressed air leading-in assembly comprises a compressed air leading-in pipe connected with the gasification chamber, the end part of the compressed air leading-in pipe is connected with a compressed air source, and a pressure reducing valve, a switch valve and a one-way valve are arranged on the compressed air leading-in pipe.
Further, the gas tightness inspection assembly comprises a vacuum generator, a first vacuum tube and a second vacuum tube which are connected with the inlet end of the vacuum generator, the free end of the first vacuum tube is connected with a compressed air inlet tube, the free end of the second vacuum tube is connected with a gasification chamber, the output end of the vacuum generator is connected with a third vacuum tube, and the free end of the third vacuum tube is connected with a gasified cyclohexane gas outlet tube.
Furthermore, a pressure reducing valve is arranged on the first vacuum tube, and a switch valve is arranged on the second vacuum tube.
Further, a pressure indicator is installed on the gasification chamber, the liquid cyclohexane inlet pipe and the gasified cyclohexane gas outlet pipe are both connected to the top of the gasification chamber, and the compressed air inlet pipe is connected to the bottom of the gasification chamber.
Further, the outside of liquid cyclohexane holding vessel is equipped with the safety cover, is equipped with the window on the safety cover, and liquid cyclohexane holding vessel adopts transparent material.
Further, the compressed air source is an air pump.
Furthermore, the quick connector comprises a male connector and a female connector, the female connector is fixedly connected with the gasified cyclohexane gas delivery pipe, the female connector is quickly connected with the male connector, and the male connector is connected with a test system of the iodine adsorber.
The invention has the beneficial effects that: the generator has the advantages of easy control of gas generation conditions, convenient operation and good field adaptability, and all performance indexes can meet the requirements of leakage rate tests.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, the pulse type cyclohexane gas cold generator for detecting the leakage rate of the iodine adsorber comprises a gasification chamber 1, wherein the gasification chamber 1 is connected with a cyclohexane liquid feeding assembly, an air tightness checking assembly, a compressed air feeding assembly and a gasified cyclohexane gas leading-out assembly, the cyclohexane liquid feeding assembly comprises a liquid cyclohexane leading-in pipe 2 connected with the gasification chamber 1, the end part of the liquid cyclohexane leading-in pipe 2 is connected with a hollow needle 3, the hollow needle 3 is inserted into a sealed liquid cyclohexane storage tank 4, and the liquid cyclohexane leading-in pipe 2 is provided with a switch valve V6;
the gasified cyclohexane gas leading-out component comprises a gasified cyclohexane gas leading-out pipe 5 connected with the gasification chamber 1, a quick connector and a switch valve V7 are installed on the gasified cyclohexane gas leading-out pipe 5, and the quick connector is connected with a test system of the iodine adsorber.
Further, the compressed air introducing module includes a compressed air introducing pipe 6 connected to the gasification chamber 1, a compressed air source is connected to an end of the compressed air introducing pipe 6, and a pressure reducing valve V3, a switching valve V4 and a check valve V5 are provided on the compressed air introducing pipe 6.
The gas tightness inspection assembly comprises a vacuum generator 7, a first vacuum tube 8 and a second vacuum tube 9 which are connected with the inlet end of the vacuum generator 7, the free end of the first vacuum tube 8 is connected with a compressed air inlet tube 6, the free end of the second vacuum tube 9 is connected with a gasification chamber 1, the output end of the vacuum generator 7 is connected with a third vacuum tube 10, and the free end of the third vacuum tube 10 is connected with a gasified cyclohexane gas outlet tube 5. The first vacuum tube 8 is provided with a pressure reducing valve V1, and the second vacuum tube 9 is provided with a switch valve V2.
Further, a pressure indicator 11 is installed on the gasification chamber 1, the liquid cyclohexane inlet pipe 2 and the gasified cyclohexane gas outlet pipe 5 are both connected to the top of the gasification chamber 1, and the compressed air inlet pipe 6 is connected to the bottom of the gasification chamber 1.
The outside of the liquid cyclohexane storage tank 4 is provided with a protective cover 12, the protective cover 12 is provided with a window 13, and the liquid cyclohexane storage tank 4 is made of transparent materials. The compressed air source is preferably an air pump. The quick connector comprises a male connector 14 and a female connector 15, the female connector 15 is fixedly connected with the gasified cyclohexane gas delivery pipe 5, the female connector 15 is quickly connected with the male connector 14, and the male connector 14 is connected with a test system of the iodine adsorber.
The specific operation procedure of the system is as follows:
1. air tightness inspection
And (3) connecting a compressed air source, closing valves V3, V4, V5, V6 and V7, opening a valve V2, adjusting a pressure reducing valve V1, starting the vacuum generator 7 to work, observing the reading of a pressure indicator 11, reducing the pressure in the gasification chamber 1 to-0.8 bar, then closing the valve V2 and the pressure reducing valve V1, observing the pressure value, and judging that the change is not more than 0.05bar within 5min, wherein the air tightness is qualified.
2. Liquid feeding device
5-10 mL of cyclohexane is packaged into a liquid cyclohexane storage tank 4 made of 10Ml glass, the liquid cyclohexane storage tank is inversely inserted into a protective cover 12, a hollow needle 3 in the protective cover 12 is inserted into a rubber plug of the liquid cyclohexane storage tank 4, a valve V6 is opened, cyclohexane liquid in the liquid cyclohexane storage tank 4 is sucked into a gasification chamber 1 under the action of negative pressure in the gasification chamber 1, and the valve V6 is closed after the liquid in the liquid cyclohexane storage tank 4 completely flows into the gasification chamber 1.
3. Gasification of
The boiling point of the cyclohexane in the gasification chamber 1 is reduced under the condition of negative pressure, and the gasification rate is accelerated. When the gasification chamber 1 is kept still for 10-15min or the reading of the pressure indicator is increased by 1-2bar, the cyclohexane liquid is completely gasified.
4. Injection of
The pressure indicator reading was raised to 3-6bar by opening switch valve V4 and slowly adjusting pressure relief valve V3, switch valve V7 was opened and the vaporized hexane gas was injected into the test system via the generator outlet under a compressed air load.
5. Close off
After the test is completed, the gasification chamber 1 is purged for at least 5min, the valve V3 and the valve V4 are closed, and finally the valve V7 is closed.
Because the amount of the cyclohexane liquid added at a time can be accurately controlled, and the single use amount is only a few milliliters, the generator is safe in generation and operation, good in injection concentration repeatability, easy to control the gas generation condition, convenient and fast to operate, good in field adaptability, and capable of meeting the leakage rate test requirements in all performance indexes.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equally replaced; however, these modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention.
Claims (6)
1. The pulse type cyclohexane gas cold generator for detecting the leakage rate of the iodine adsorber comprises a gasification cavity, a hexane liquid adding assembly, an air tightness checking assembly, a compressed air introducing assembly and a gasified cyclohexane gas leading-out assembly, and is characterized in that the cyclohexane liquid adding assembly comprises a liquid cyclohexane leading-in pipe connected with the gasification cavity, the end part of the liquid cyclohexane leading-in pipe is connected with a hollow needle, the hollow needle is inserted into a sealed liquid cyclohexane storage tank, and a switch valve is arranged on the liquid cyclohexane leading-in pipe;
the gasified cyclohexane gas leading-out component comprises a gasified cyclohexane gas leading-out pipe connected with the gasification chamber, a quick connector and a switch valve are mounted on the gasified cyclohexane gas leading-out pipe, and the quick connector is connected with a test system of the iodine adsorber;
the compressed air leading-in assembly comprises a compressed air leading-in pipe connected with the gasification chamber, the end part of the compressed air leading-in pipe is connected with a compressed air source, and a pressure reducing valve, a switch valve and a one-way valve are arranged on the compressed air leading-in pipe;
the air tightness inspection assembly comprises a vacuum generator, a first vacuum tube and a second vacuum tube, wherein the first vacuum tube and the second vacuum tube are connected with the inlet end of the vacuum generator, the free end of the first vacuum tube is connected with a compressed air inlet tube, the free end of the second vacuum tube is connected with a gasification chamber, the output end of the vacuum generator is connected with a third vacuum tube, and the free end of the third vacuum tube is connected with a gasified cyclohexane gas outlet tube.
2. The pulse type cyclohexane gas cold generator for detecting the leakage rate of the iodine adsorber as claimed in claim 1, wherein the first vacuum tube is provided with a pressure reducing valve, and the second vacuum tube is provided with a switch valve.
3. The pulse type cyclohexane gas cold generator for detecting the leakage rate of the iodine adsorber as claimed in claim 2, wherein a pressure indicator is installed on the gasification chamber, the liquid cyclohexane inlet pipe and the gasified cyclohexane gas outlet pipe are connected to the top of the gasification chamber, and the compressed air inlet pipe is connected to the bottom of the gasification chamber.
4. The pulse type cyclohexane gas cold generator for detecting the leakage rate of the iodine adsorber as claimed in claim 1, wherein a protective cover is provided outside the liquid cyclohexane storage tank, a window is provided on the protective cover, and the liquid cyclohexane storage tank is made of transparent material.
5. The pulse type cyclohexane gas cold generator for iodine adsorber leakage rate detection according to claim 1, wherein the compressed air source is an air pump.
6. The pulse type cyclohexane gas cold generator for detecting the leakage rate of the iodine adsorber as claimed in claim 1, wherein the quick connector comprises a male connector and a female connector, the female connector is fixedly connected with the gasified cyclohexane gas outlet pipe, the female connector is quickly connected with the male connector, and the male connector is connected with a test system of the iodine adsorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248298.0A CN110068434B (en) | 2019-03-29 | 2019-03-29 | Pulse type cyclohexane gas cold generator for detecting leakage rate of iodine adsorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248298.0A CN110068434B (en) | 2019-03-29 | 2019-03-29 | Pulse type cyclohexane gas cold generator for detecting leakage rate of iodine adsorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110068434A CN110068434A (en) | 2019-07-30 |
| CN110068434B true CN110068434B (en) | 2021-05-18 |
Family
ID=67366736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910248298.0A Active CN110068434B (en) | 2019-03-29 | 2019-03-29 | Pulse type cyclohexane gas cold generator for detecting leakage rate of iodine adsorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110068434B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006922A (en) * | 2019-11-15 | 2020-04-14 | 中国辐射防护研究院 | Methyl iodide gas generation method and generator for detecting efficiency of iodine adsorber |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844399A (en) * | 1981-09-09 | 1983-03-15 | 株式会社東芝 | Device for removing iodine in main condenser vacuum pump and turbine axis seal steam system exthaust gas |
| WO2007006757A1 (en) * | 2005-07-11 | 2007-01-18 | Maintenance Securite Installation Service | Method for controlling leakage rate of active carbon filters |
| CN101875597A (en) * | 2010-06-07 | 2010-11-03 | 中国广东核电集团有限公司 | Preparation method of preparation for radioactive gas purifying capability test in nuclear power plant |
| WO2011142243A1 (en) * | 2010-05-10 | 2011-11-17 | 三菱重工業株式会社 | Method and device for testing for leak in iodine filter |
| JP2012103120A (en) * | 2010-11-10 | 2012-05-31 | Japan Environment Research Co Ltd | Removal effect measurement system |
| CN202893313U (en) * | 2012-11-13 | 2013-04-24 | 中国广东核电集团有限公司 | Gaseous radioactive iodine reaction flask and efficiency test device for iodine filter using same |
| CN103903660A (en) * | 2012-12-26 | 2014-07-02 | 中国辐射防护研究院 | Halogen generator |
| CN105738142A (en) * | 2016-02-29 | 2016-07-06 | 苏州热工研究院有限公司 | Adsorption efficiency experiment device and experiment method for iodine absorber |
| CN107152991A (en) * | 2016-03-04 | 2017-09-12 | 中国辐射防护研究院 | The pilot system and test method detected for iodine adsorber slip in nuclear power station ventilating system |
| CN107655637A (en) * | 2016-07-26 | 2018-02-02 | 中国辐射防护研究院 | The pulsed halogen gas detection method and equipment of a kind of iodine adsorber leak detection |
| CN207114232U (en) * | 2016-10-09 | 2018-03-16 | 李进 | The device for sampling and gasifying for more boiling point mixed liquors |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4696561B2 (en) * | 2005-01-14 | 2011-06-08 | 東京エレクトロン株式会社 | Vaporizer and processing device |
| WO2011153930A1 (en) * | 2010-06-07 | 2011-12-15 | 中国广东核电集团有限公司 | Reagent for testing purification capacity of radioactive gas in nuclear power plant, preparation method thereof and iodide filter testing equipment using this reagent |
| CN104634926A (en) * | 2013-11-11 | 2015-05-20 | 中国辐射防护研究院 | Circulating iodine adsorber performance test method and device |
| CN205538266U (en) * | 2016-02-29 | 2016-08-31 | 苏州热工研究院有限公司 | Iodine adsorber absorption efficiency experimental apparatus |
-
2019
- 2019-03-29 CN CN201910248298.0A patent/CN110068434B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5844399A (en) * | 1981-09-09 | 1983-03-15 | 株式会社東芝 | Device for removing iodine in main condenser vacuum pump and turbine axis seal steam system exthaust gas |
| WO2007006757A1 (en) * | 2005-07-11 | 2007-01-18 | Maintenance Securite Installation Service | Method for controlling leakage rate of active carbon filters |
| WO2011142243A1 (en) * | 2010-05-10 | 2011-11-17 | 三菱重工業株式会社 | Method and device for testing for leak in iodine filter |
| CN101875597A (en) * | 2010-06-07 | 2010-11-03 | 中国广东核电集团有限公司 | Preparation method of preparation for radioactive gas purifying capability test in nuclear power plant |
| JP2012103120A (en) * | 2010-11-10 | 2012-05-31 | Japan Environment Research Co Ltd | Removal effect measurement system |
| CN202893313U (en) * | 2012-11-13 | 2013-04-24 | 中国广东核电集团有限公司 | Gaseous radioactive iodine reaction flask and efficiency test device for iodine filter using same |
| CN103903660A (en) * | 2012-12-26 | 2014-07-02 | 中国辐射防护研究院 | Halogen generator |
| CN105738142A (en) * | 2016-02-29 | 2016-07-06 | 苏州热工研究院有限公司 | Adsorption efficiency experiment device and experiment method for iodine absorber |
| CN107152991A (en) * | 2016-03-04 | 2017-09-12 | 中国辐射防护研究院 | The pilot system and test method detected for iodine adsorber slip in nuclear power station ventilating system |
| CN107655637A (en) * | 2016-07-26 | 2018-02-02 | 中国辐射防护研究院 | The pulsed halogen gas detection method and equipment of a kind of iodine adsorber leak detection |
| CN207114232U (en) * | 2016-10-09 | 2018-03-16 | 李进 | The device for sampling and gasifying for more boiling point mixed liquors |
Non-Patent Citations (3)
| Title |
|---|
| Leakage test methodology development in iodine-125 seeds production;Joao Augusto Moura;《Progress in Nuclear Energy》;20130131;第79-82页 * |
| 氧碘化学激光器尾气处理及设备设计;刘颜召;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20150415;B027-343页 * |
| 碘吸附器有效性试验方法及评价;俞杰、吴振龙、凌学会等;《核安全》;20180430;第43-47页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110068434A (en) | 2019-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110068428B (en) | Iodine adsorber leakage rate on-line measuring system and measuring method thereof | |
| CN110068434B (en) | Pulse type cyclohexane gas cold generator for detecting leakage rate of iodine adsorber | |
| CN112524474A (en) | Full-immersion hydrogen storage system | |
| CN111257121B (en) | Automatic testing system for hydrostatic test | |
| CN112363076A (en) | Dynamics testing device and method for alloy hydrogen storage material | |
| CN209764355U (en) | Nuclear power station gate sealing element sealing performance test device | |
| US11881321B2 (en) | Device for measuring total gas content of primary circuit of PWR nuclear power | |
| CN111129549A (en) | System and method for rapidly detecting series leakage of fuel cell stack | |
| CN114061855B (en) | Nuclear power plant containment penetration piece tightness test operation system and method | |
| CN112113717A (en) | Gas cylinder air tightness testing device and method applied to low-temperature environment | |
| CN207225105U (en) | Fuel cell car and its fuel gas pressurize and displacement control system | |
| CN210953558U (en) | Automatic sampling and measuring device for hydrogen gas in hydrogen introduction test of mobile hydrogen recombiner of nuclear power plant | |
| GB918894A (en) | Double seals equipped with means for detecting leaks | |
| CN210125179U (en) | Pulse type cyclohexane gas heat generator for detecting leakage rate of iodine adsorber | |
| CN111477373B (en) | Nuclear power station nuclear sampling system and method for checking sampling pipeline thereof | |
| CN109681683B (en) | Flexible graphite sealing injection device for sodium-cooled fast reactor | |
| CN203488978U (en) | Purging, replacing and hydrogen charging system for full-automatic ultrahigh-pressure hydrogen environment material tester | |
| CN110610770A (en) | Automatic isolation system and method for safety injection tank of pressurized water reactor nuclear power plant | |
| CN211602373U (en) | Low-temperature service life detection device of vehicle-mounted high-pressure gas cylinder | |
| CN214121527U (en) | Drainage method detection device for gas tightness of hydrogen fuel cell | |
| CN114062056B (en) | Sampling device suitable for negative pressure and positive pressure gas pipeline | |
| CN211318128U (en) | Experimental device for detect rubber permeability | |
| CN212252073U (en) | GIS vacuum pumping equipment system for SF6 gas filling | |
| CN214667424U (en) | On-line checking pressure gauge device for electric penetration piece | |
| CN216902273U (en) | Nuclear power plant reactor primary circuit coolant leakage monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |