CN109686468B - Bellows sealing injection device for sodium-cooled fast reactor - Google Patents
Bellows sealing injection device for sodium-cooled fast reactor Download PDFInfo
- Publication number
- CN109686468B CN109686468B CN201910021613.6A CN201910021613A CN109686468B CN 109686468 B CN109686468 B CN 109686468B CN 201910021613 A CN201910021613 A CN 201910021613A CN 109686468 B CN109686468 B CN 109686468B
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- China
- Prior art keywords
- flow control
- control valve
- check valve
- connecting pipe
- injection device
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- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 title claims abstract description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001257 hydrogen Substances 0.000 claims abstract description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 20
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 18
- 229910052786 argon Inorganic materials 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 8
- 229910052708 sodium Inorganic materials 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001514 detection method Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012942 design verification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- NASFKTWZWDYFER-UHFFFAOYSA-N sodium;hydrate Chemical compound O.[Na] NASFKTWZWDYFER-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/006—Details of nuclear power plant primary side of steam generators
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Valve Housings (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to the technical field of hydrogen injection of sodium-cooled fast reactors, and in particular relates to a corrugated pipe sealing injection device for a sodium-cooled fast reactor, which comprises a flow control valve, wherein the top end of the flow control valve is provided with a regulating handle, one side of the flow control valve is provided with an air inlet pipe, the bottom end of the flow control valve is connected with a check valve through a middle connecting pipe, the bottom end of the check valve is provided with an exhaust connecting pipe, the regulating handle is connected with a flow control valve rod in the flow control valve, the lifting of the flow control valve rod is driven under the control of the regulating handle so as to control the flow of gas entering the exhaust connecting pipe from the air inlet pipe through the flow control valve, the middle connecting pipe and the check valve, the flow control valve rod penetrates through a flow control valve filler nut and the corrugated pipe, and the sealing between the flow control valve rod and the outside of the flow control valve is realized through the corrugated pipe. The injection device has the advantages of simple operation, high reliability, low processing and maintenance cost and easy maintenance and replacement.
Description
Technical Field
The invention belongs to the technical field of hydrogen injection of sodium-cooled fast reactors, and particularly relates to a bellows sealing injection device for a sodium-cooled fast reactor.
Background
The accident protection system of the steam generator is an important safety system which is necessary to be arranged in the sodium-cooled fast neutron breeder reactor, and can be divided into a single-module steam generator and a multi-module steam generator corresponding to different sodium-cooled fast reactor scales, and the basic principles of the protection system are the same, so that the safety of two-loop equipment and pipelines caused by overpressure generated by sodium-water reaction is prevented.
In order to ensure the safe operation of the multi-module steam generator, the research and development of sodium water reaction test equipment in the design verification project of the sodium water reaction accident protection system of the multi-module steam generator are required to be carried out, so that the relation of parameters such as leakage quantity, temperature and pressure of water when the heat exchange tube of the multi-module steam generator leaks little and leaks big is obtained. It is therefore desirable to design an apparatus for injecting hydrogen/argon into the test equipment in a sodium water reaction test to simulate a small leakage sodium water reaction.
Disclosure of Invention
The invention aims to design a set of hydrogen/argon injection device with adjustable flow for a hydrogen injection test of an accident protection system of a sodium-cooled fast reactor steam generator, complete on-line calibration of a hydrogen meter through hydrogen injection/argon injection tests with different flow, set an accurate alarm threshold for small leakage of the sodium-cooled fast reactor, thereby providing a reliable small leakage alarm signal for the sodium-cooled fast reactor and triggering related protection and isolation measures.
In order to achieve the above purpose, the technical scheme adopted by the invention is that the bellows sealing injection device for the sodium-cooled fast reactor is used for injecting hydrogen and/or argon into test equipment in a hydrogen injection test, wherein the bellows sealing injection device comprises a flow control valve, the top end of the flow control valve is provided with an adjusting handle, one side of the flow control valve is provided with an air inlet pipe, the bottom end of the flow control valve is connected with a check valve through a middle connecting pipe, the bottom end of the check valve is provided with an exhaust connecting pipe, the adjusting handle is connected with a flow control valve rod in the flow control valve, and the flow control valve rod is driven to lift under the control of the adjusting handle so as to realize the control of the flow of gas entering the exhaust connecting pipe from the air inlet pipe through the flow control valve, the middle connecting pipe and the check valve, and the flow control valve rod penetrates through a flow control valve filling nut and the bellows, so that the flow control valve rod and the flow control valve are sealed.
Further, a flow control valve stuffing box is arranged in a flow control valve body of the flow control valve, a valve rod of the flow control valve penetrates through the flow control valve stuffing box, and the corrugated pipe is arranged in the flow control valve stuffing box.
Further, the part of the bottom end of the flow control valve stuffing box, which is in contact with the valve body of the flow control valve, is sealed by adopting a first sealing gasket.
Further, the regulating handle is connected with the valve rod of the flow control valve through the inner sleeve and the outer sleeve; the maximum travel of the inner sleeve and the outer sleeve of the scale is 14mm, and 14 scales are arranged; 10 scales are uniformly arranged on the circumference of the outer sleeve of the inner sleeve and the outer sleeve of the scale; the flow control valve can set the gas flow under 140 different openings through the inner sleeve and the outer sleeve of the scale.
Further, the check valve comprises a check valve stuffing box and a check valve body, the check valve stuffing box is arranged in the check valve body, the top end of the check valve stuffing box is communicated with the bottom end of the middle connecting pipe, and the exhaust connecting pipe is arranged at the bottom end of the check valve body.
Further, the part of the bottom end of the check valve stuffing box, which is in contact with the check valve body, is sealed by adopting a second sealing gasket.
Further, the first sealing gasket and the second sealing gasket are made of clip 316 and Gao Mu flexible graphite.
Further, the corrugated pipe is made of S32168 stainless steel.
Further, the length of the vent nipple is capable of ensuring that the temperature transferred from the test equipment to the check valve during an injection operation does not exceed the design temperature of the check valve.
Further, the flow control valve is in welded sealing connection with the air inlet pipe, the flow control valve is in welded sealing connection with the middle connecting pipe, the middle connecting pipe is in welded sealing connection with the check valve, and the check valve is in welded sealing connection with the air exhaust connecting pipe.
The invention has the beneficial effects that:
1. a set of injection device with adjustable flow is provided for the hydrogen injection test of the accident protection system of the sodium-cooled fast reactor steam generator.
2. The operation is simple and convenient, the reliability is high, the processing and maintenance cost is low, and the maintenance and the replacement are easy.
3. Helium leak detection is carried out by the injection device, and the leakage quantity is less than 10 -7 Pa.m 3 /s。
4. The corrugated pipe 7 is made of stainless steel, has high strength, is not easy to damage, and can keep good sealing effect in high-temperature and high-radiation environments.
Drawings
FIG. 1 is a schematic illustration of a bellows seal injection apparatus for a sodium cooled fast reactor according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a flow control valve according to an embodiment of the present invention;
FIG. 3 is a schematic view of a check valve according to an embodiment of the present invention;
in the figure: 1-adjusting handle, 2-flow control valve, 3-flow control valve stuffing box, 4-intake pipe, 5-scale inner and outer sleeve, 6-flow control valve stem, 7-bellows, 8-flow control valve body, 9-first sealing gasket, 10-check valve, 11-check valve body, 12-second sealing gasket, 13-check valve stuffing box, 14-exhaust connection pipe, 15-intermediate connection pipe, 16-flow control valve stuffing nut.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in FIG. 1, the bellows seal injection device for the sodium-cooled fast reactor is used for injecting hydrogen and/or argon into test equipment at a fixed flow rate under the operation condition of hydrogen injection test. The upper part of the injection device is provided with a flow control valve 2, a scale inner and outer sleeve 5 is adopted to inject constant flow hydrogen/argon into the test equipment under the set pressure, and a check valve 10 at the lower part of the injection device is used for preventing sodium vapor in the test equipment (such as a sodium water reactor) from entering the injection device.
As shown in fig. 1 and 2, the top end of the flow control valve 2 is provided with an adjusting handle 1, one side is provided with an air inlet pipe 4, and the bottom end of the flow control valve 2 is connected with a check valve 10 through an intermediate connecting pipe 15.
The regulating handle 1 is connected with a flow control valve rod 6 in the flow control valve 2, and the flow control valve rod 6 is driven to lift under the control of the regulating handle 1 so as to control the flow of gas entering the connecting pipe 14 from the gas inlet pipe 4 through the flow control valve 2, the middle connecting pipe 15 and the check valve 10, the flow control valve rod 6 is arranged in the flow control valve packing nut 16 and the corrugated pipe 7 in a penetrating way, and the sealing (dynamic sealing in this case) between the flow control valve rod 6 and the outside of the flow control valve 2 is realized through the corrugated pipe 7. The bellows 7 is made of S32168 stainless steel. Because the flowing medium in the injection device is hydrogenAnd/or argon, in order to ensure that hydrogen and/or argon do not leak into the air, the injection device is required to perform helium leak detection, the leak amount is less than 10 -7 Pa.m 3 /s。
The flow control valve body 8 of the flow control valve 2 is internally provided with a flow control valve packing box 3, the flow control valve rod 6 passes through the flow control valve packing box 3, and the corrugated pipe 7 is arranged in the flow control valve packing box 3. The part of the bottom end of the flow control valve stuffing box 3, which is in contact with the flow control valve body 8, is sealed by a first sealing gasket 9 (here, static sealing), and the first sealing gasket 9 is made of clip 316 Gao Mu flexible graphite.
The adjusting handle 1 is connected with a valve rod 6 of the flow control valve through an inner sleeve 5 and an outer sleeve 5; the maximum travel of the inner sleeve and the outer sleeve 5 is 14mm, and 14 scales are arranged; the circumference of the outer sleeve of the scale inner and outer sleeve 5 is uniformly provided with 10 scales; the flow control valve 2 can set the gas flow rate under 140 different opening degrees through the scale inner and outer sleeve 5.
As shown in fig. 3, the check valve 10 includes a check valve stuffing box 13 and a check valve body 11, the check valve stuffing box 13 is disposed in the check valve body 11, the top end of the check valve stuffing box 13 communicates with the bottom end of the flow control valve 2 through an intermediate connection pipe 15, and an exhaust connection pipe 14 is disposed at the bottom end of the check valve body 11 for introduction into the test equipment.
The portion of the bottom end of the check valve stuffing box 13, which contacts the check valve body 11, is sealed (here, a static seal) by a second sealing gasket 12, and the second sealing gasket 12 is made of clip 316 Gao Mu flexible graphite.
The length of the vent nipple 14 ensures that the temperature transmitted from the test equipment to the check valve 10 during an injection operation does not exceed the design temperature of the check valve 10, ensuring reliability of the seal. The length of the exhaust nozzle 14 is determined using CFD software for heat transfer simulation.
The flow control valve 2 and the air inlet pipe 4, the flow control valve 2 and the middle connecting pipe 15, the middle connecting pipe 15 and the check valve 10, and the check valve 10 and the exhaust connecting pipe 14 are all in welded sealing connection. The embodiment is used for a sodium water reaction test bench, and the structural size of the valve of the injection device is determined by calculating the valve sealing specific pressure, the axial force, the torque and the valve rod stress.
The device according to the invention is not limited to the examples described in the specific embodiments, and a person skilled in the art obtains other embodiments according to the technical solution of the invention, which also belong to the technical innovation scope of the invention.
Claims (7)
1. A bellows seal injection device for sodium-cooled fast reactor for annotate hydrogen test in the hydrogen test to the test equipment in hydrogen and/or argon gas, characterized by: the device comprises a flow control valve (2) with an adjusting handle (1) at the top and an air inlet pipe (4) at one side, wherein the bottom end of the flow control valve (2) is connected with a check valve (10) through an intermediate connecting pipe (15), the bottom end of the check valve (10) is provided with an exhaust connecting pipe (14), the adjusting handle (1) is connected with a flow control valve rod (6) in the flow control valve (2), the flow control valve rod (6) is driven to lift under the control of the adjusting handle (1), so that the control of the flow of air entering the exhaust connecting pipe (14) from the air inlet pipe (4) through the flow control valve (2), the intermediate connecting pipe (15) and the check valve (10) is realized, the flow control valve rod (6) is penetrated in a flow control valve packing nut (16) and a corrugated pipe (7), and the sealing of the flow control valve rod (6) and the outside of the flow control valve (2) is realized through the corrugated pipe (7);
a flow control valve body (8) of the flow control valve (2) is internally provided with a flow control valve packing box (3), a flow control valve rod (6) passes through the flow control valve packing box (3), and a corrugated pipe (7) is arranged in the flow control valve packing box (3);
the part of the bottom end of the flow control valve stuffing box (3) contacted with the flow control valve body (8) is sealed by a first sealing gasket (9);
the adjusting handle (1) is connected with the valve rod (6) of the flow control valve through the scale inner and outer sleeve (5); the maximum travel of the inner sleeve and the outer sleeve (5) with the scales is 14mm, and 14 scales are arranged; the circumference of the outer sleeve of the scale inner and outer sleeve (5) is uniformly provided with 10 scales; the flow control valve (2) can set the gas flow under 140 different openings through the scale inner and outer sleeves (5).
2. An injection device according to claim 1, wherein: the check valve (10) comprises a check valve stuffing box (13) and a check valve body (11), the check valve stuffing box (13) is arranged in the check valve body (11), the top end of the check valve stuffing box (13) is communicated with the bottom end of the middle connecting pipe (15), and the exhaust connecting pipe (14) is arranged at the bottom end of the check valve body (11).
3. An injection device as claimed in claim 2, wherein: the part of the bottom end of the check valve stuffing box (13) contacted with the check valve body (11) is sealed by a second sealing gasket (12).
4. An injection device according to claim 3, wherein: the first sealing gasket (9) and the second sealing gasket (12) are made of clip 316 Gao Mu flexible graphite.
5. An injection device according to claim 1, wherein: the corrugated pipe (7) is made of S32168 stainless steel.
6. An injection device according to claim 1, wherein: the length of the vent connection (14) ensures that the temperature transmitted from the test device to the check valve (10) during an injection operation does not exceed the design temperature of the check valve (10).
7. An injection device according to claim 1, wherein: the flow control valve (2) and the air inlet pipe (4), the flow control valve (2) and the middle connecting pipe (15), the middle connecting pipe (15) and the check valve (10) and the exhaust connecting pipe (14) are all in welded sealing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021613.6A CN109686468B (en) | 2019-01-09 | 2019-01-09 | Bellows sealing injection device for sodium-cooled fast reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021613.6A CN109686468B (en) | 2019-01-09 | 2019-01-09 | Bellows sealing injection device for sodium-cooled fast reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109686468A CN109686468A (en) | 2019-04-26 |
| CN109686468B true CN109686468B (en) | 2024-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910021613.6A Active CN109686468B (en) | 2019-01-09 | 2019-01-09 | Bellows sealing injection device for sodium-cooled fast reactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN109686468B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092648U (en) * | 1990-12-24 | 1992-01-08 | 陶柏林 | Stuffing type sealing constructure of valve by means of filling sealing agent |
| CN1486923A (en) * | 2003-07-17 | 2004-04-07 | 上海交通大学 | Hydrogen generating and storing system and method with sodium-cooled fast reactor as heat source for catalytic pyrolysis of methane |
| CN104299666A (en) * | 2014-08-26 | 2015-01-21 | 上海舜华新能源系统有限公司 | Ultra-micro-flow high-pressure hydrogen accurate injection system and method |
| CN104409112A (en) * | 2014-12-03 | 2015-03-11 | 中国核动力研究设计院 | Containment recycling system |
| CN204242599U (en) * | 2014-12-03 | 2015-04-01 | 中国核动力研究设计院 | There is the containment exhaust system of circulating filtration function |
| CN204573147U (en) * | 2015-01-08 | 2015-08-19 | 中国原子能科学研究院 | A kind of heavy caliber sodium valves for sodium-cooled fast reactor |
| KR20180023142A (en) * | 2016-08-24 | 2018-03-07 | 현대제철 주식회사 | Gas cutting device |
| CN209607426U (en) * | 2019-01-09 | 2019-11-08 | 中国原子能科学研究院 | A kind of sylphon seal injection device for sodium-cooled fast reactor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6799844B2 (en) * | 2002-12-16 | 2004-10-05 | Xerox Corporation | High shear ball check valve device and a liquid ink image producing machine using same |
-
2019
- 2019-01-09 CN CN201910021613.6A patent/CN109686468B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092648U (en) * | 1990-12-24 | 1992-01-08 | 陶柏林 | Stuffing type sealing constructure of valve by means of filling sealing agent |
| CN1486923A (en) * | 2003-07-17 | 2004-04-07 | 上海交通大学 | Hydrogen generating and storing system and method with sodium-cooled fast reactor as heat source for catalytic pyrolysis of methane |
| CN104299666A (en) * | 2014-08-26 | 2015-01-21 | 上海舜华新能源系统有限公司 | Ultra-micro-flow high-pressure hydrogen accurate injection system and method |
| CN104409112A (en) * | 2014-12-03 | 2015-03-11 | 中国核动力研究设计院 | Containment recycling system |
| CN204242599U (en) * | 2014-12-03 | 2015-04-01 | 中国核动力研究设计院 | There is the containment exhaust system of circulating filtration function |
| CN204573147U (en) * | 2015-01-08 | 2015-08-19 | 中国原子能科学研究院 | A kind of heavy caliber sodium valves for sodium-cooled fast reactor |
| KR20180023142A (en) * | 2016-08-24 | 2018-03-07 | 현대제철 주식회사 | Gas cutting device |
| CN209607426U (en) * | 2019-01-09 | 2019-11-08 | 中国原子能科学研究院 | A kind of sylphon seal injection device for sodium-cooled fast reactor |
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| CN109686468A (en) | 2019-04-26 |
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