CN207425373U - A kind of non-homogeneous electrically heated nuclear fuel simulation stick - Google Patents
A kind of non-homogeneous electrically heated nuclear fuel simulation stick Download PDFInfo
- Publication number
- CN207425373U CN207425373U CN201720711768.9U CN201720711768U CN207425373U CN 207425373 U CN207425373 U CN 207425373U CN 201720711768 U CN201720711768 U CN 201720711768U CN 207425373 U CN207425373 U CN 207425373U
- Authority
- CN
- China
- Prior art keywords
- bringing
- section
- stick
- nickel
- nuclear fuel
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model discloses a kind of non-homogeneous electrically heated nuclear fuel simulation stick, belongs to reactor experimental study field.Applied to the critical heat flux density experimental study of nuclear fuel assembly, it is related to the experimental study of fuel assembly thermal-hydraulic performance.The utility model flows through conductor using electric current and generates heat as principle, by the non-homogeneous heat release along the non-homogeneous heat simulation that electrically heated rod axially generates along nuclear fuel rod axial direction, so as to carry out the critical heat flux density experimental study of nuclear fuel assembly.
Description
Technical field
Experiment the utility model is related to reactor experimental study field, especially experimental rig and using the experimental rig
Method.
Background technology
Critical heat flux density is one of key design parameter of nuclear fuel assembly, and at present, the critical heat flux of fuel assembly is close
Degree can't be predicted with theoretical method, can only be obtained by testing.Meanwhile nuclear fuel rod is not uniformly to release vertically
Heat, the thermal environment of axially different height is different, this factor is also must be considered that during nuclear fuel assembly is researched and developed.
Before the application, there are some devices for being directed to the experiment.For example, there are a kind of electrical heating of document report in foreign countries
Stick, but the operating pressure of the device is only up to 40bar, differs larger with the actual pressure that fuel assembly is born.The program
There are no the overall package of solution electrically heated rod and accessory, wall surface temperature measurement, electrically heated rod and the external power supplies of electrically heated rod
Connection the problems such as.
In domestic similar design, resistance wire is wrapped in stick wicking surface.The program does not solve the wall surface of electrically heated rod
Temperature survey problem；The relative position of resistance wire and barred body is difficult to ensure that；By being powered to resistance wire, so as to be carried out to outer tube body
Indirectly heat, the thermal efficiency are relatively low.
Utility model content
The purpose of this utility model is for problem of the prior art, provides a kind of non-homogeneous electrically heated nuclear fuel simulation
Stick and its test method.
It is for realization the utility model aim the technical solution adopted is that such, a kind of non-homogeneous electrically heated nuclear fuel
Simulate stick, it is characterised in that:Mainly include nickel stick, bringing-up section, copper sheet, ceramic member, thermocouple, nickel tube, copper pipe.
The nickel stick, bringing-up section, nickel tube and copper pipe are sequentially connected from top to bottom, become a constant metal bar of outer diameter
Body.
The bringing-up section is the metal tube of a change internal diameter.The upper end of the bringing-up section inner cavity by nickel stick block, it is described plus
The lower end of hot arc inner cavity is connected with the inner cavity of nickel tube and copper pipe.
The inner wall of the bringing-up section, nickel tube and copper pipe has ceramic layer.
Several thermocouples are accommodated in the bringing-up section inner cavity.The temperature of the thermocouple measurement bringing-up section inner ceramic.
The upper end of the nickel stick and the lower end of copper pipe connect the two poles of the earth of power supply respectively.
Further, the bringing-up section inner cavity is multistage gradual change hole, and in-between aperture is more than the aperture at both ends.
Further, there are several copper sheets in the bringing-up section inner cavity.Bringing-up section inner wall ceramics and thermocouple with it is described
Copper sheet contacts.
Further, connected between nickel stick, bringing-up section, nickel tube and copper pipe by the way of silver-alloy brazing.
Further, the critical heat flux density experiment of above-mentioned simulation stick progress nuclear fuel assembly or fuel assembly are being employed
During the experiment of thermal-hydraulic performance, the top of nickel stick is hung, and electric current flows through metal barred body and generates heat.Pass through electrically heated rod
Non-homogeneous heat release of the non-homogeneous heat simulation generated along nuclear fuel rod axial direction, so as to carry out correlation test research.
Having the technical effect that for the utility model is unquestionable：
1) nuclear fuel rod non-homogeneous heat release vertically can be simulated；
2) high heat flux density can be generated under high temperature, high pressure operating mode；
3) structure design simple and compact, feasibility is high, and reliability is high, assembling can be processed according to specified size, accurately
Control the distribution of heat flow density；
4) it can measure in real time and export the temperature of designated position, it is safe；
5) good heat conductivity can realize rapid, high volume heat exchange.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the A-A sectional views of Fig. 1.
In figure：Nickel stick 1, bringing-up section 2, copper sheet 3, ceramic member 4, thermocouple 5, nickel tube 6, copper pipe 7.
Specific embodiment
With reference to embodiment, the utility model is described in further detail, but should not be construed the above-mentioned master of the utility model
Topic scope is only limitted to following embodiments.It is common according to this field in the case where not departing from the above-mentioned technological thought of the utility model
Technological know-how and customary means make various replacements and change, should all include within the protection scope of the present utility model.
Embodiment 1：
Referring to Fig. 1, a kind of non-homogeneous electrically heated nuclear fuel simulation stick, it is characterised in that:Mainly include nickel stick 1, heating
Section 2, copper sheet 3, ceramic member 4, thermocouple 5, nickel tube 6, copper pipe 7.
The nickel stick 1, bringing-up section 2, nickel tube 6 and copper pipe 7 are sequentially connected from top to bottom, become a constant metal of outer diameter
Barred body.Its use environment can be high temperature, hyperbaric environment, and working media is deionized water.
The bringing-up section 2 is the metal tube of a change internal diameter.The upper end of 2 inner cavity of bringing-up section is blocked by nickel stick 1, is described
The lower end of 2 inner cavity of bringing-up section is connected with the inner cavity of nickel tube 6 and copper pipe 7.
The inner wall of the bringing-up section 2, nickel tube 6 and copper pipe 7 has ceramic layer, i.e. ceramic member 4.
In embodiment, bringing-up section 2 is the metal tube that material is Inconel 600, and tube wall outer diameter is constant, and wall thickness is axially
Variation can simulate the non-homogeneous heat release of nuclear fuel rod axial direction.As shown in Figure 1,2 inner cavity of bringing-up section is multistage gradual change hole,
In-between aperture is more than the aperture at both ends.
Several thermocouples 5 are accommodated in 2 inner cavity of bringing-up section.Can more thermocouples be set in different position, measure
The temperature of 2 inner ceramic of bringing-up section.The temperature of measurement designated position in real time, can reduce the risk that heating rod is burnt.In embodiment,
There are several copper sheets 3 in 2 inner cavity of bringing-up section.The ceramics and thermocouple 5 of 2 inner wall of bringing-up section are contacted with the copper sheet 3.
Copper product heat conductivility used and mechanical performance are excellent, can quickly conduct the temperature of ceramic member 4 to thermocouple 5.Thermoelectricity
Even 5 conducting wire is drawn from the lower end of copper pipe 7.
The upper end of the nickel stick 1 and the lower end of copper pipe 7 connect the two poles of the earth of power supply respectively.Nickel stick 1 is while proof strength
Reduce invalid caloric value.The excellent insulating property of shown ceramic member 4 can insulate bringing-up section 2 and thermocouple 5.
In embodiment, connected between nickel stick 1, bringing-up section 2, nickel tube 6 and copper pipe 7 by the way of silver-alloy brazing.Copper pipe 7 exists
Invalid caloric value is reduced while proof strength.
In the utility model, the maximum temperature of stick is simulated up to 650 DEG C, is met needed for critical heat flux density experiment, it can
It measures in real time and exports the temperature of electrically heated rod；Larger heat flow density can be generated, there is good thermal conductivity, can be realized quick
A large amount of heat exchanges；Structure design is simple, and feasibility is high, can be processed assembling according to the actual size of nuclear fuel, accurate to ensure
The distribution of heat flow density；It can bear the external pressure of 15.5MPa；Solve the problems, such as that electrically heated rod is reliably connected with power supply, and
And it can accurately control the length of efficient heat generation section.
Embodiment 2：
It is a kind of hot using the critical heat flux density experiment for the nuclear fuel assembly that stick is simulated described in embodiment 1 or fuel assembly
The experiment of work hydraulic performance.
During experiment, the top of nickel stick 1 is hung so that simulation stick after heated heating rod can free wxpansion vertically,
/V stress will not be generated.
Electric current flows through metal barred body and generates heat.The non-homogeneous heat simulation generated by electrically heated rod is along nuclear fuel rod
Axial non-homogeneous heat release, so as to carry out correlation test research.
The utility model have can simulate along the non-homogeneous heat release of nuclear fuel rod axial direction, compact-sized, accurate size, heat
Current density is high, can securely and reliably work under high temperature, high pressure operating mode, and the utility model and associated components can replace nuclear fuel rod
The experimental studies such as critical heat flux density are carried out, and measure the critical heat flux density of nuclear fuel rod under different operating conditions.This practicality
New application has good supporting role to the research and development of nuclear fuel assembly.
Claims (4)
1. a kind of non-homogeneous electrically heated nuclear fuel simulation stick, it is characterised in that:Mainly include nickel stick (1), bringing-up section (2), heat
Galvanic couple (5), nickel tube (6), copper pipe (7)；
The nickel stick (1), bringing-up section (2), nickel tube (6) and copper pipe (7) are sequentially connected from top to bottom, and it is constant to become an outer diameter
Metal barred body；
The bringing-up section (2) is the metal tube of a change internal diameter；The upper end of bringing-up section (2) inner cavity is blocked by nickel stick (1), institute
The lower end for stating bringing-up section (2) inner cavity is connected with the inner cavity of nickel tube (6) and copper pipe (7)；
The inner wall of the bringing-up section (2), nickel tube (6) and copper pipe (7) has ceramic layer；
Several thermocouples (5) are accommodated in bringing-up section (2) inner cavity；Described thermocouple (5) measurement bringing-up section (2) inner ceramic
Temperature；
The upper end of the nickel stick (1) and the lower end of copper pipe (7) connect the two poles of the earth of power supply respectively.
2. the non-homogeneous electrically heated nuclear fuel simulation stick of one kind according to claim 1, it is characterised in that：The bringing-up section
(2) inner cavity is multistage gradual change hole, and in-between aperture is more than the aperture at both ends.
3. the non-homogeneous electrically heated nuclear fuel simulation stick of one kind according to claim 1, it is characterised in that：The bringing-up section
(2) there are several copper sheets (3) in inner cavity；The ceramics and thermocouple (5) of bringing-up section (2) inner wall are contacted with the copper sheet (3).
4. the non-homogeneous electrically heated nuclear fuel simulation stick of one kind according to claim 1, it is characterised in that：Nickel stick (1) adds
It is connected between hot arc (2), nickel tube (6) and copper pipe (7) by the way of silver-alloy brazing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720711768.9U CN207425373U (en) | 2017-06-19 | 2017-06-19 | A kind of non-homogeneous electrically heated nuclear fuel simulation stick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720711768.9U CN207425373U (en) | 2017-06-19 | 2017-06-19 | A kind of non-homogeneous electrically heated nuclear fuel simulation stick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207425373U true CN207425373U (en) | 2018-05-29 |
Family
ID=62398972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720711768.9U Expired - Fee Related CN207425373U (en) | 2017-06-19 | 2017-06-19 | A kind of non-homogeneous electrically heated nuclear fuel simulation stick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207425373U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945895A (en) * | 2017-06-19 | 2018-04-20 | 重庆大学 | A kind of non-homogeneous electrically heated nuclear fuel simulation rod |
| CN111537545A (en) * | 2020-05-14 | 2020-08-14 | 中国核动力研究设计院 | Experimental fuel rod for research on source item release characteristics |
-
2017
- 2017-06-19 CN CN201720711768.9U patent/CN207425373U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945895A (en) * | 2017-06-19 | 2018-04-20 | 重庆大学 | A kind of non-homogeneous electrically heated nuclear fuel simulation rod |
| CN111537545A (en) * | 2020-05-14 | 2020-08-14 | 中国核动力研究设计院 | Experimental fuel rod for research on source item release characteristics |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107945895A (en) | A kind of non-homogeneous electrically heated nuclear fuel simulation rod | |
| CN105007641B (en) | Critical heat flux density test heating rod | |
| CN103650060B (en) | For adding the electric heater unit of hot liquid, for producing method and the use in the electrical simulation of nuclear fuel rod of this electric heater unit of this electric heater unit | |
| CN104078087B (en) | A kind of cluster testpieces of simulating Supercritical-Pressure Light Water Cooled Reactor fuel element | |
| CN203931518U (en) | A kind of cluster simulating piece of simulating Supercritical-Pressure Light Water Cooled Reactor fuel element | |
| CN208317038U (en) | A kind of novel electric heating stick | |
| CN207425373U (en) | A kind of non-homogeneous electrically heated nuclear fuel simulation stick | |
| CN104517656B (en) | A kind of slender type non-uniform heating element and processing technique thereof | |
| CN103096527B (en) | Electrical heating rod device | |
| CN114222383A (en) | High-temperature-resistant annular electric heating rod capable of measuring wall surface temperature field | |
| CN104143410A (en) | Water-cooled electric reactor | |
| CN107062587B (en) | High-power preheater for liquid metal sodium experimental loop | |
| CN202928708U (en) | Contact temperature measuring sensor with short thermal response time | |
| CN105788680A (en) | Heating simulation element for reactor core | |
| CN204350336U (en) | For the sheathed heater of high-temperature molten salt with thermal conductance type liquid level transducer | |
| CN206546217U (en) | Temperature sensor and electrical equipment | |
| CN101128072A (en) | Skin electrical heating part | |
| CN114916101B (en) | Heating rod and heating rod bundle device | |
| CN114698164B (en) | Indirect uniform electric heating rod | |
| CN109661045A (en) | The production method and graphene heating board of graphene heating board | |
| CN109548206A (en) | The production method and graphene heat-generating pipe of graphene heat-generating pipe, air smear equipment | |
| CN204853961U (en) | Far infrared chip electric water heater of device that generates heat in addition | |
| CN118072991B (en) | Primary loop dynamic water corrosion simulation fuel element of pressurized water reactor nuclear power station | |
| CN109827337A (en) | A kind of very fast electrothermal tube of accurate temperature control | |
| CN203476304U (en) | Electric heater for downhole crude oil heating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20210619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |