CN204760049U - LOCA testing equipment - Google Patents
LOCA testing equipment Download PDFInfo
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- CN204760049U CN204760049U CN201520580897.XU CN201520580897U CN204760049U CN 204760049 U CN204760049 U CN 204760049U CN 201520580897 U CN201520580897 U CN 201520580897U CN 204760049 U CN204760049 U CN 204760049U
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- testing equipment
- loca
- trial furnace
- circular hollow
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- 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
(B, ) the utility model discloses a (B, ) (b) LOCA (b) (b) testing equipment, testing equipment including have accommodation space the trial furnace, hang in sample in the trial furnace with be located the vapor outlet device of trial furnace lower part, the vapor outlet device includes the vapor outlet device is including setting up empty tray and stretching into from the outside in the ring -type in the trial furnace in the trial furnace with the breather pipe that empty tray is linked together in the ring -type, empty tray includes that the annular body that has the cavity cavity is in with the setting in the ring -type a plurality of ventholes of going up of body upper surface, because the utility model discloses used the upper surface to have empty tray in the ring -type of through -hole, can evenly spout high temperature water vapor. (B, )
Description
Technical field
the utility model relate to a kind of can under out-of-pile simulates LOCA operating mode zircaloy fuel canning material by the steam outlet device of the even high-temperature oxydation of water vapor and testing equipment.
Background technology
zirconium water reaction Zr+2H can be there is in zircaloy in high-temperature vapor
2
o=ZrO
2
+ 2H
2
its surface easily forms oxide film, this layer of oxide film is firmly attached to metal surface, a large amount of heats is released in the reaction of zirconium water makes involucrum outer surface oxide film thickness increase sharply, high temperature also enhances oxygen by the diffusivity of oxide film to metallic matrix, and formation has certain thickness Zr-O solid solution layer, because Zr-O solid solution layer has stronger fragility, thus have impact on the mechanical property of matrix; Meanwhile, this reaction also can be formed and have volatile hydrogen.At generation LOCA(LossOfCoolantAccident) under operating mode, reactor-loop dehydration, in reactor pressure vessel, pressure declines rapidly, safety injection system is caused to start, in heap, water filling is when safety injection system starts backward exposed reactor core water filling, the high-temperature material of involucrum is understood the rapid reduction of Yin Wendu and is subject to thermal shock, this process is equivalent to carry out Quenching Treatment to involucrum, if now material loses ductility and becomes fragile due to high-temperature oxydation, break under directly will causing the effect of pressure in involucrum, cause the release of radioactive fission product, cause serious accident.
the water vapor that China simulates LOCA experiment is at present all sprayed by single pipeline, and the water vapor of single pipeline ejection can not be evenly distributed in furnace chamber, thus cause water vapor easily uneven in zircaloy fuel canning material surface distributed, when zircaloy and water vapor generation zirconium water react, zircaloy fuel canning material can be lost ductility by rapid high-temperature oxydation become fragile in the water vapor more region that distributes, involucrum outer surface oxide film thickness is caused to increase sharply, at high temperature under condition, oxygen obtains reinforcement by oxide film to the ability of the diffusion process of metallic matrix, and formation has certain thickness fragility Zr-O solid solution layer, thus directly cause involucrum to break, cause the release of radioactive fission product, meanwhile, this reaction also can produce and have volatile hydrogen.For this reason evenly oxidized particularly important under the effect of zircaloy fuel canning material at water vapor in simulation LOCA experiment.
usually, under out-of-pile simulation LOCA operating mode, the outlet device of zircaloy fuel canning material water vapor high-temperature oxidation test as shown in Figure 1, when testing, adopt a kind of single tube to spray water vapor, this device unfortunately can not make zircaloy fuel canning material even high-temperature oxydation under water vapor effect.Therefore, a kind of steam outlet device that water vapor evenly can be sprayed and testing equipment is needed at present.
Summary of the invention
the purpose of this utility model is to provide a kind of steam outlet device that water vapor evenly can be sprayed and testing equipment.
for achieving the above object, the technical solution adopted in the utility model is:
a kind of LOCA testing equipment, described testing equipment comprise there is spatial accommodation trial furnace, hang on the sample in described trial furnace and be positioned at the steam outlet device of described trial furnace bottom, described steam outlet device comprises described steam outlet device and comprises and be arranged on circular hollow dish in described trial furnace and stretch into the snorkel be connected with described circular hollow dish in described trial furnace from outside, and described circular hollow dish comprises the body with hollow cavity of annular and is arranged on the multiple upper venthole of described body upper surface.
preferably, described upper venthole is uniformly distributed at the upper surface of described body.
further preferably, centered by described upper venthole line perpendicular to the circular hole of described body upper surface.
preferably, described circular hollow dish also comprises the lower production well being arranged on described body lower surface.
further preferably, described lower production well is uniformly distributed at the lower surface of described body.
further preferably, centered by described lower production well line perpendicular to the circular hole of described body lower surface.
preferably, described lower production well is identical with the quantity of described upper venthole, and consistency from top to bottom is arranged.
preferably, described snorkel and described circular hollow dish are metal material.
preferably, described circular hollow dish is horizontally set on the bottom of described trial furnace cavity.
one end of described snorkel is welded with described circular hollow dish, and the other end is connected with the generating means of water vapor
because technique scheme is used, the utility model compared with prior art has following advantages:
because the utility model employs the circular hollow dish of upper surface with through hole, high-temperature vapor evenly can be sprayed.
Accompanying drawing explanation
accompanying drawing 1 is prior art schematic diagram;
accompanying drawing 2 is principle of work schematic diagram of the present utility model;
accompanying drawing 3 is the cross-sectional schematic of the utility model circular hollow dish and snorkel.
in above accompanying drawing: 1, trial furnace; 2, sample; 3, snorkel; 4, circular hollow dish; 41 bodies; 42, upper venthole; 43, lower production well.
Embodiment
below in conjunction with embodiment shown in the drawings, the utility model is further described:
shown in accompanying drawing 1, a kind of LOCA testing equipment, testing equipment comprises the trial furnace 1 with spatial accommodation, hang on the sample 2 in trial furnace 1 and the steam outlet device being positioned at described trial furnace (1) bottom, steam outlet device comprises circular hollow dish 4 that steam outlet device comprises the bottom be arranged in trial furnace 1 cavity and stretches into the snorkel 3 be connected with circular hollow dish 4 in trial furnace 1 from outside, circular hollow dish 4 comprises the body 41 with hollow cavity of annular and the multiple upper venthole 42 being arranged on body 41 upper surface, upper venthole 42 is the circular hole of vertical body 41 upper surface, it is uniformly distributed at the upper surface of body 41, its Center Vent tube 3 length is 40 ~ 50mm, diameter is 20 ~ 30mm, the thickness of circular hollow dish 4 is 30 ~ 40mm, interior through being 50 ~ 60mm for 30 ~ 40mm, external diameter.
circular hollow dish 4 also comprises the lower production well 43 being arranged on body 41 lower surface, lower production well 43 is the circular hole of vertical body 41 lower surface, it is identical with the quantity of upper venthole 42 that it is uniformly distributed lower production well 43 in the present embodiment at the lower surface of body 41, be provided with 6 in the present embodiment, be evenly distributed on the upper and lower surface of circular hollow dish 4 respectively ringwise, and consistency from top to bottom is arranged, in the present embodiment, lower production well 43 is 2-3mm with the diameter of upper venthole 42.
snorkel 3 and circular hollow dish 4 are the metal materials such as excellent T91, Inconel690 or FeCrAl alloy of steam resistance oxidation characteristics energy.
a kind of testing equipment with the steam outlet device that above-mentioned LOCA tests.
high-temperature steam enters in the cavity of circular hollow dish 4 from snorkel 3, and evenly upwards spray from the upper venthole 42 of circular hollow dish 4 upper surface, the water that high-temperature steam condenses in circular hollow dish 4 cavity then flows out from the lower production well 43 of circular hollow dish 4 lower surface.
above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (10)
1. a LOCA testing equipment, described testing equipment comprises the trial furnace (1) with spatial accommodation, hang on the sample (2) in described trial furnace (1) and be positioned at the steam outlet device of described trial furnace (1) bottom, it is characterized in that: described steam outlet device comprises and is arranged on circular hollow dish (4) in described trial furnace (1) and stretches into the snorkel (3) be connected with described circular hollow dish (4) in described trial furnace (1) from outside, described circular hollow dish (4) comprises the body (41) with hollow cavity of annular and the multiple upper venthole (42) being arranged on described body (41) upper surface.
2. a kind of LOCA testing equipment according to claim 1, is characterized in that: described upper venthole (42) is uniformly distributed at the upper surface of described body (41).
3. a kind of LOCA testing equipment according to claim 1 and 2, is characterized in that: centered by described upper venthole (42), line is perpendicular to the circular hole of described body (41) upper surface.
4. a kind of LOCA testing equipment according to claim 1, is characterized in that: described circular hollow dish (4) also comprises the lower production well (43) being arranged on described body (41) lower surface.
5. a kind of LOCA testing equipment according to claim 4, is characterized in that: described lower production well (43) is uniformly distributed at the lower surface of described body (41).
6. a kind of LOCA testing equipment according to claim 4 or 5, is characterized in that: centered by described lower production well (43), line is perpendicular to the circular hole of described body (41) lower surface.
7. a kind of LOCA testing equipment according to claim 4, is characterized in that: described lower production well (43) is identical with the quantity of described upper venthole (42), and consistency from top to bottom is arranged.
8. a kind of LOCA testing equipment according to claim 1, is characterized in that: described snorkel (3) and described circular hollow dish (4) are metal material.
9. a kind of LOCA testing equipment according to claim 1, is characterized in that: described circular hollow dish (4) is horizontally set on the bottom of described trial furnace (1) cavity.
10. a kind of LOCA testing equipment according to claim 1, is characterized in that: one end of described snorkel (3) is welded with described circular hollow dish (4), and the other end is connected with the generating means of water vapor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520580897.XU CN204760049U (en) | 2015-08-05 | 2015-08-05 | LOCA testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520580897.XU CN204760049U (en) | 2015-08-05 | 2015-08-05 | LOCA testing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204760049U true CN204760049U (en) | 2015-11-11 |
Family
ID=54474731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520580897.XU Active CN204760049U (en) | 2015-08-05 | 2015-08-05 | LOCA testing equipment |
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| CN (1) | CN204760049U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575447A (en) * | 2016-02-17 | 2016-05-11 | 苏州热工研究院有限公司 | Experimental device for assessing nuclear fuel cladding pipe performance under simulated LOCA working condition |
| CN107167488A (en) * | 2017-05-09 | 2017-09-15 | 中国原子能科学研究院 | Reactor cladding materials pyrogenic steam oxidation quenching experimental apparatus and its test method |
| CN109147970A (en) * | 2018-08-10 | 2019-01-04 | 中广核研究院有限公司 | Fuel can LOCA simulation test device |
| CN110957053A (en) * | 2019-12-18 | 2020-04-03 | 苏州热工研究院有限公司 | Test system for simulating high-fuel-consumption working condition of fuel cladding |
-
2015
- 2015-08-05 CN CN201520580897.XU patent/CN204760049U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575447A (en) * | 2016-02-17 | 2016-05-11 | 苏州热工研究院有限公司 | Experimental device for assessing nuclear fuel cladding pipe performance under simulated LOCA working condition |
| CN105575447B (en) * | 2016-02-17 | 2017-05-17 | 苏州热工研究院有限公司 | Experimental device for assessing nuclear fuel cladding pipe performance under simulated LOCA working condition |
| CN107167488A (en) * | 2017-05-09 | 2017-09-15 | 中国原子能科学研究院 | Reactor cladding materials pyrogenic steam oxidation quenching experimental apparatus and its test method |
| CN107167488B (en) * | 2017-05-09 | 2019-11-08 | 中国原子能科学研究院 | Reactor cladding materials pyrogenic steam oxidation quenching experimental apparatus and its test method |
| CN109147970A (en) * | 2018-08-10 | 2019-01-04 | 中广核研究院有限公司 | Fuel can LOCA simulation test device |
| CN110957053A (en) * | 2019-12-18 | 2020-04-03 | 苏州热工研究院有限公司 | Test system for simulating high-fuel-consumption working condition of fuel cladding |
| CN110957053B (en) * | 2019-12-18 | 2021-10-08 | 苏州热工研究院有限公司 | Test system for simulating high-fuel-consumption working condition of fuel cladding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161207 Address after: 215004 West Ring Road, Jiangsu, Suzhou, No. 1788 Patentee after: Suzhou Nuclear Power Research Institute Co., Ltd. Patentee after: China General Nuclear Power Corporation Patentee after: China wide nuclear electricity incorporated company Patentee after: China Nuclear Power Engineering Co., Ltd. Patentee after: Lingdong Nuclear Power Co., Ltd. Address before: 215004 West Ring Road, Jiangsu, Suzhou, No. 1788 Patentee before: Suzhou Nuclear Power Research Institute Co., Ltd. Patentee before: China General Nuclear Power Corporation Patentee before: China wide nuclear electricity incorporated company Patentee before: China Nuclear Power Engineering Co., Ltd. |