CN105407554B - A kind of LOCA experiment zirconium pipe internal heat - Google Patents
A kind of LOCA experiment zirconium pipe internal heat Download PDFInfo
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- CN105407554B CN105407554B CN201510671927.2A CN201510671927A CN105407554B CN 105407554 B CN105407554 B CN 105407554B CN 201510671927 A CN201510671927 A CN 201510671927A CN 105407554 B CN105407554 B CN 105407554B
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- zirconium pipe
- internal heat
- quartz ampoule
- loca
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Abstract
The present invention discloses a kind of LOCA experiment zirconium pipe internal heat, pedestal including insulation, one end is connected the closed zirconium pipe of the other end with the pedestal, the one end being arranged in the zirconium pipe is connected the closed quartz ampoule of the other end with the pedestal, the heating rod for the U-shaped being arranged in the quartz ampoule and the insulating ceramic film being arranged between the heating rod both ends, there are two electrodes for setting on the pedestal, the both ends of the heating rod are connect with the electrode respectively, the insulating ceramic film is fixedly connected with the pedestal, since the present invention is heated using inside zirconium pipe using the heating rod in quartz ampoule, the maximum temperature that zirconium pipe can be reached quickly is 1450 DEG C, furthermore, heating properties are stablized, and tungsten bar resistant to high temperature and quartz ampoule difficulty of processing very little, production is simple, it is easy molding.
Description
Technical field
The present invention relates to a kind of LOCA to test zirconium pipe internal heat.
Background technique
LOCA(Loss Of Coolant Accident is occurring) under operating condition, stacking pressure is reacted in reactor-loop dehydration
Rapid pressure drop in force container, causes safety injection system to start, and into heap, water filling is after safety injection system starting to exposed reactor core
When water filling, the high-temperature material of involucrum can be due to reducing rapidly for temperature by thermal shock, which, which is equivalent to, quenches to involucrum
Fire processing, if material loses ductility due to high-temperature oxydation and becomes fragile at this time, under the action of will directly resulting in involucrum internal pressure
Rupture, causes the release of radioactive fission product, causes serious accident.Performance rule in relation to LOCA operating condition cladding nuclear fuels pipe
It is fixed: to keep integrality in quenching process when 1204 DEG C, ECR are 17%.Therefore, cladding nuclear fuels pipe under LOCA operating condition is evaluated
Performance it is extremely important.
There are two types of the zirconium pipe heating methods of existing simulation LOCA operating condition cladding nuclear fuels pipe device for evaluating performance: one is
Zirconium pipe is directly placed in heat-treatment furnace and is heated, this heating method differs farther out with practical LOCA operating condition.It is practical
LOCA operating condition fuel tube is to be heated by fuel pellet in cladding inner, and cladding tube temperature is caused to rise；Another is
Heater is fitted into cladding tubes and is heated, this heating method has the drawback that cladding tubes both ends add electrode and lead
The components such as line make cladding tubes bear certain external force, have an impact to test result.
Summary of the invention
The object of the present invention is to provide the zirconium pipe internal heats that one kind can preferably simulate LOCA working condition experimenting.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of LOCA tests zirconium pipe internal heat, packet
Include the pedestal of insulation, one end is connected the closed zirconium pipe of the other end, one end for being arranged in the zirconium pipe and institute with the pedestal
State pedestal be connected the closed quartz ampoule of the other end, the heating rod for the U-shaped being arranged in the quartz ampoule and setting described plus
Insulating ceramic film between hot pin both ends, on the pedestal setting there are two electrode, the both ends of the heating rod respectively with it is described
Electrode connection, the insulating ceramic film are fixedly connected with the pedestal.
Preferably, the heating rod is the tungsten bar of U-shaped.
It is further preferred that the section of the tungsten bar is circle.
Preferably, the tungsten bar length is 200 ~ 450mm, and diameter is 5 ~ 6mm, cuts out width from top to bottom using wire cutting
For the gap of 0.5-1mm, the distance between lower end of the lower end in the gap and the tungsten bar is 10-20mm.
Preferably, the heating rod, quartz ampoule and zirconium Guan Jun are vertically arranged.
Preferably, the closing end of the quartz ampoule is smooth spherical shape.
Preferably, the electrode is copper billet.
It preferably, is vacuum or filling inert gas in the quartz ampoule.
Preferably, the insulating ceramic film with a thickness of 0.6-1mm.
Preferably, lower end 10mm of the lower end of the quartz ampoule apart from the heating rod 4, the internal diameter of the quartz ampoule
For 6mm, outer diameter 8mm.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
Since the present invention is heated using inside zirconium pipe using the heating rod in quartz ampoule, zirconium pipe can quickly be reached most
High-temperature is 1450 DEG C；In addition, heating properties are stablized, and tungsten bar resistant to high temperature and quartz ampoule difficulty of processing very little, production is simple,
It is easy molding.
Detailed description of the invention
Attached drawing 1 is schematic cross-sectional view of the invention.
In the figures above: 1, pedestal；2, zirconium pipe；3, quartz ampoule；4, heating rod；5, insulating ceramic film；6, electrode.
Specific embodiment
The invention will be further described for embodiment shown in reference to the accompanying drawing:
Embodiment one: referring to figure 1, a kind of LOCA tests zirconium pipe internal heat, pedestal 1 including insulation,
One end is connected the closed zirconium pipe 2 being vertically arranged of the other end, 1 phase of the one end being vertically arranged in zirconium pipe 2 and pedestal with pedestal 1
The closed quartz ampoule 3 of the other end, the heating rod 4 for the U-shaped being vertically arranged in quartz ampoule 3 and setting are connected at 4 both ends of heating rod
Between insulating ceramic film 5, insulating ceramic film 5 with a thickness of 0.6-1mm；Heating rod 4 is that section is circular tungsten bar, and tungsten bar is long
Degree is 200 ~ 450mm, and diameter is 5 ~ 6mm, and wire cutting is used to cut out width from top to bottom for the gap of 0.5-1mm, under gap
The distance between end and the lower end of tungsten bar are 10-20mm, and tungsten bar is about gap bilateral symmetry.The closed end of quartz ampoule 3
Portion is smooth spherical shape, and there are two electrodes 6 made of copper billet, the both ends of heating rod 4 to connect respectively with electrode 6 for setting on pedestal 1,
Insulating ceramic film 5 is fixedly connected with pedestal.
Lower end 10mm of the lower end of quartz ampoule 3 apart from heating rod 4, the internal diameter of quartz ampoule are 6mm, outer diameter 8mm, stone
It is vacuum or filling inert gas in English pipe 3.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of LOCA tests zirconium pipe internal heat, it is characterised in that: pedestal (1), one end and the base including insulation
Seat (1) be connected the closed zirconium pipe (2) of the other end, one end in the zirconium pipe (2) be set be connected separately with the pedestal (1)
The heating rod (4) of quartz ampoule (3), the U-shaped being arranged in the quartz ampoule (3) closed at one end and setting are in the heating rod
(4) insulating ceramic film between both ends (5), there are two electrode (6), the both ends of the heating rod (4) for setting on the pedestal (1)
It is connect respectively with the electrode (6), the insulating ceramic film (5) is fixedly connected with the pedestal.
2. a kind of LOCA according to claim 1 tests zirconium pipe internal heat, it is characterised in that: the heating rod
It (4) is the tungsten bar of U-shaped.
3. a kind of LOCA according to claim 2 tests zirconium pipe internal heat, it is characterised in that: the tungsten bar is cut
Face is circle.
4. a kind of LOCA according to claim 2 tests zirconium pipe internal heat, it is characterised in that: the tungsten bar length
For 200 ~ 450mm, diameter is 5 ~ 6mm, and wire cutting is used to cut out width from top to bottom as the gap of 0.5-1mm, the gap
The distance between lower end and the lower end of the tungsten bar are 10-20mm.
5. a kind of LOCA according to claim 1 tests zirconium pipe internal heat, it is characterised in that: the heating rod
(4), quartz ampoule (3) and zirconium pipe (2) are vertically arranged.
6. a kind of LOCA according to claim 1 tests zirconium pipe internal heat, it is characterised in that: the quartz ampoule
(3) closing end is smooth spherical shape.
7. a kind of LOCA according to claim 1 tests zirconium pipe internal heat, it is characterised in that: the electrode (6)
For copper billet.
8. a kind of LOCA according to claim 1 tests zirconium pipe internal heat, it is characterised in that: the quartz ampoule
It (3) is vacuum or filling inert gas in.
9. a kind of LOCA according to claim 1 tests zirconium pipe internal heat, it is characterised in that: the insulating ceramics
Piece (5) with a thickness of 0.6-1mm.
10. a kind of LOCA according to claim 1 tests zirconium pipe internal heat, it is characterised in that: the quartz ampoule
Lower end 10mm of the lower end apart from the heating rod (4), the internal diameter of the quartz ampoule is 6mm, outer diameter 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671927.2A CN105407554B (en) | 2015-10-16 | 2015-10-16 | A kind of LOCA experiment zirconium pipe internal heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671927.2A CN105407554B (en) | 2015-10-16 | 2015-10-16 | A kind of LOCA experiment zirconium pipe internal heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105407554A CN105407554A (en) | 2016-03-16 |
| CN105407554B true CN105407554B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510671927.2A Active CN105407554B (en) | 2015-10-16 | 2015-10-16 | A kind of LOCA experiment zirconium pipe internal heat |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108811195B (en) * | 2018-06-20 | 2021-05-18 | 上海核工程研究设计院有限公司 | Drying and finished product protecting device and method for voltage stabilizer heater of nuclear power station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB185902A (en) * | 1921-07-12 | 1922-09-21 | May And Padmore Ltd | Improvements in electric heaters |
| CN201528441U (en) * | 2009-11-02 | 2010-07-14 | 新郑市诚信炭素有限公司 | Electric heating tube |
| CN103096527A (en) * | 2011-10-27 | 2013-05-08 | 清华大学 | Electrical heating rod device |
| CN204968138U (en) * | 2015-10-16 | 2016-01-13 | 苏州热工研究院有限公司 | LOCA experiment zirconium pipe inner heating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100334993B1 (en) * | 1998-12-01 | 2002-05-02 | 추후제출 | Heater |
-
2015
- 2015-10-16 CN CN201510671927.2A patent/CN105407554B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB185902A (en) * | 1921-07-12 | 1922-09-21 | May And Padmore Ltd | Improvements in electric heaters |
| CN201528441U (en) * | 2009-11-02 | 2010-07-14 | 新郑市诚信炭素有限公司 | Electric heating tube |
| CN103096527A (en) * | 2011-10-27 | 2013-05-08 | 清华大学 | Electrical heating rod device |
| CN204968138U (en) * | 2015-10-16 | 2016-01-13 | 苏州热工研究院有限公司 | LOCA experiment zirconium pipe inner heating device |
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| CN105407554A (en) | 2016-03-16 |
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