CN108376571B - Core temperature measuring device for reactor - Google Patents
Core temperature measuring device for reactor Download PDFInfo
- Publication number
- CN108376571B CN108376571B CN201810070085.9A CN201810070085A CN108376571B CN 108376571 B CN108376571 B CN 108376571B CN 201810070085 A CN201810070085 A CN 201810070085A CN 108376571 B CN108376571 B CN 108376571B
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- Prior art keywords
- thermocouple
- reactor
- cock
- measurement column
- measuring device
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/003—Remote inspection of vessels, e.g. pressure vessels
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
- G21C19/22—Arrangements for obtaining access to the interior of a pressure vessel whilst the reactor is operating
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention discloses a kind of core temperature measuring device for reactor, measurement column, the cock of heap top and elevating mechanism including several thermocouple assemblies, for installing the thermocouple assembly, the measurement column can be threaded through up or down in the cock of the heap top so that the bottom end of the thermocouple assembly is close or far from reactor core, the elevating mechanism is for driving the measurement column to move up and down.Separately, another embodiment of the present invention discloses a kind of core temperature measuring device for reactor, including the cock of heap top, multiple measurement columns and elevating mechanism, multiple measurement columns are distributed in a ring to be threaded through in the cock of the heap top to be disposed around center target pipe periphery, it is installed with several thermocouple assemblies respectively in each measurement column, several thermocouple assemblies in each measurement column are corresponding with several fuel assemblies of the side the center Ba Guan respectively, the elevating mechanism be used to that the measurement column to be driven to move up and down so that the thermocouple assembly bottom end close to or far from reactor core.
Description
Technical field
The present invention relates to reactor field more particularly to a kind of core temperature measuring devices for reactor.
Background technique
At present in XADS lead base fast reactor, all thermocouple instrument are concentrated in one piece of support plate, and with C&P systems
It is mounted in a round tube with holes, then fixes it with the cock of heap top round tube extraction heap top.When lead base fast reactor needs change
When material, the cock of heap top is rotated by a certain angle, thus by entire round tube (i.e. thermocouple assembly and C&P systems) with reactor core
The parallel direction of top end face is removed far from reactor core, to provide required space of reloading to refueling machine in heap.Although existing XADS
Thermocouple assembly and C&P systems are removed by rotation heap top cock in lead base fast reactor, sufficient sky is provided to refueling machine
Between, but the heap top cock volume that such design will cause reactor is excessive, so that increasing the diameter of container, leads to lead base fast reactor
Entirety is excessive, increases the problems such as coolant volume.
For lead bismuth heap (half pool semi-loop type reactor of lead bismuth coolant), since the centre in reactor core has through entire
The center target pipe and control rod guide tube and temperature of reactor core and pressure vessel measure the introducing of the carrier center measurement column of conduit,
It cannot achieve in heap and reload.
Summary of the invention
The purpose of the present invention is to provide a kind of core temperature measuring devices for reactor, can be to refueling machine in heap
Sufficient space of reloading is provided, while solving that cock volume in heap top is excessive, increases volume of a container and coolant volume
Problem.
It, can be to being changed in heap another object of the present invention is to provide a kind of core temperature measuring device for reactor
Material machine provides sufficient space of reloading, while it is excessive to solve heap top cock volume, increases volume of a container and coolant body
Long-pending problem；And can be avoided the interference between the target pipe of center, it realizes and reloads in the heap of lead bismuth heap.
To achieve the above object, the present invention provides a kind of core temperature measuring device for reactor, if including xeothermic
Galvanic couple component, the measurement column for installing the thermocouple assembly, the cock of heap top and elevating mechanism, the measurement column can on move down
Be threaded through in the cock of the heap top dynamicly so that the thermocouple assembly bottom end close to or far from reactor core, the elevating mechanism
For driving the measurement column to move up and down.
Preferably, the elevating mechanism is the ball-screw component being mounted vertically in the cock of the heap top.
Preferably, the thermocouple assembly includes thermocouple instrument and the gauge pipe for being arranged the thermocouple instrument, the measurement
Column includes tube body and the end cap for being formed in the tube body upper end, offers several through-holes on the end cap, the thermocouple instrument and
The measurement column is stretched out by the corresponding through-hole in the upper end of the gauge pipe, and the thermocouple instrument can be drawn upwardly out or to underthrust
Enter the gauge pipe；It designs whereby, can be realized the thermocouple instrument in out-pile and carry out the single function of pulling and pushing, so that not beating
In the case where reactor startup top cover and the end cap, the thermocouple instrument can be repaired or be replaced；Moreover, the gauge pipe
Guiding role can be played to the plug of the thermocouple instrument.
Preferably, the junction between the end cap and the tube body is sealed processing, so as to holding for the measurement column
Means of press seals design.
Preferably, the junction between the through-hole and the gauge pipe is sealed fixation.
It is fixed preferably, carrying out removable sealing between the gauge pipe and the top of the thermocouple instrument, and then conveniently
Replace the thermocouple instrument.
Preferably, the end cap is equipped with support rod, the apical support of the support rod has the drawing opposite with the end cap
Plate, the thermocouple assembly further include electric connector end, the top of the bottom end of the electric connector end and the thermocouple instrument
End is connected, and the top of the electric connector end is threaded through on the pulling plate, is designed whereby, and the thermoelectricity can be preferably fixed
Even instrument prevents the thermocouple instrument from shaking phenomenon occur.
To realize that above-mentioned another object, the present invention provide a kind of core temperature measuring device for reactor, including heap
Push up cock, multiple measurement columns and elevating mechanism, multiple measurement columns be threaded through in the cock of the heap top with being distributed in a ring with
It is disposed around center target pipe periphery, is installed with several thermocouple assemblies in each measurement column respectively, in each measurement column
Several thermocouple assemblies it is corresponding with several fuel assemblies of the side the center Ba Guan respectively, the elevating mechanism is for driving
The measurement column move up and down so that the thermocouple assembly bottom end close to or far from reactor core.
Preferably, the quantity of the elevating mechanism is identical as the quantity of the measurement column, to each measurement column point
It is not driven.
Preferably, the elevating mechanism is the ball-screw component being mounted vertically in the cock of the heap top.
Compared with prior art, thermocouple assembly is installed in measurement column, and controlling measurement column reduction by lifting structure makes
The thermocouple assembly of measurement column is installed in close to reactor core, in order to which the thermocouple instrument of thermocouple assembly carries out temperature survey to reactor
Amount；Controlling measurement column raising by lifting structure makes the thermocouple assembly for being installed in measurement column far from reactor core, to give refueling machine
It, being capable of 360 ° of covering heaps above reactor core when providing sufficient space of reloading, and then guaranteeing refueling machine gripping head motion positions
Core carries out the distal end chip of the fuel assembly of any reactor of point-to-point crawl；In addition, due to controlling measurement column by lifting structure
Lifting, the heap top cock volume for solving the prior art is excessive, thus increase container diameter, reactor it is integrally excessive, increase
The problem of coolant volume；And the core temperature measuring device overall structure for reactor of the invention is simple, reliable, steady
It is fixed.In addition, being threaded through in the cock of heap top with being distributed in a ring by multiple measurement columns and being disposed around center target pipe periphery, each survey
It is installed with several thermocouple assemblies respectively in amount column, can be avoided and interfered between the target pipe of center, measurement column and thermocouple
Component can move up and down under the driving of elevating mechanism, to vacate space to reload in heap, can make with center target pipe
Lead bismuth heap etc. realize and reload in heap.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the core temperature measuring device for reactor of the embodiment of the present invention.
Fig. 2 is the partial enlarged view in the portion A in Fig. 1.
Fig. 3 is the partial enlarged view in the portion B in Fig. 1.
Fig. 4 is the signal of the corresponding relationship of the thermocouple assembly of the embodiment of the present invention and the fuel assembly of CIADS reactor
Figure.
Specific embodiment
For the technology contents that the present invention will be described in detail, construction feature, below in conjunction with embodiment and cooperate attached drawing make into
One step explanation.
It please refers to Fig.1 to Fig.3, the core temperature measuring device for reactor of first embodiment of the invention includes several
Thermocouple assembly, the measurement column 2 for installing thermocouple assembly, heap top cock 3 and elevating mechanism 4, measurement column 2 can move up and down
Ground is threaded through in heap top cock 3 so that the bottom end of thermocouple assembly is close or far from reactor core 300, elevating mechanism 4 is for driving
Measurement column 2 moves up and down.
Referring to Fig. 1, elevating mechanism 4 is the ball-screw component being mounted vertically in heap top cock 3, specifically, ball
At least a glide base 42 and the servo motor 43 that lead screw assembly includes ball-screw 41, is slidably installed on ball-screw 41, ball
Lead screw 41 is fixed on the top of heap top cock 3, and glide base 42 holds measurement column 2, and servo motor 43 is for driving ball-screw
41 and glide base 42 to drive measurement column 2 to move up and down, whereby realize be used for reactor core temperature measuring device Gao Ping
Stability, high-precision the Automation Design；In the specific implementation, the vertically movable stroke of measurement column 2 is 3850mm, and movement velocity is
1.8m/s。
Referring to Fig. 3, thermocouple assembly includes thermocouple instrument 11 and the gauge pipe 12 for being arranged thermocouple instrument 11, measurement column 2
Including tube body 21 and it is formed in the end cap 22 of 21 upper end of tube body, offers several through-holes 221, thermocouple instrument 11 and instrument on end cap 22
Measurement column 2 is stretched out by corresponding through-hole 221 in the upper end of table pipe 12, and thermocouple instrument 11 can be drawn upwardly out or be downwardly into gauge pipe
12；It designs whereby, can be realized thermocouple instrument 11 in out-pile and carry out the single function of pulling and pushing, so that not opening heap top cover (figure
Do not show) and end cap 22 in the case where, thermocouple instrument 11 can be repaired or be replaced；Moreover, gauge pipe 12 is to thermocouple
The plug of instrument 11 can play guiding role.
Referring to Fig. 2, the junction between end cap 22 and tube body 21 is sealed processing, to realize holding for measurement column 2
Means of press seals design；Specifically, end cap 22 is fixed with tube body 21 by welded seal.
Please continue to refer to Fig. 2, the junction between through-hole 221 and gauge pipe 12 is sealed fixation.
It fixes referring to Fig. 3, carrying out removable sealing between gauge pipe 12 and the top of thermocouple instrument 11, designs whereby,
Conveniently replaced thermocouple instrument 11；Preferably, thermocouple instrument 11 and gauge pipe 12 pass through the removable sealing of screw thread, such as can adopt
It is tightly connected gauge pipe 12 and thermocouple instrument 11 with straight-through welding point 13, is realizing gauge pipe 12 to the axial direction of thermocouple instrument 11
While fixed and radial seal, also facilitate the replacement or maintenance for realizing thermocouple instrument 11；The model of straight-through welding point 13 can
It is selected as swagelok3/8-600-1-8W.
Referring to Fig. 1, end cap 22 is equipped with support rod 23, the apical support of support rod 23 has the pulling plate opposite with end cap 22
24, thermocouple assembly further includes electric connector end 14, and the bottom end of electric connector end 14 is connected with the top of thermocouple instrument 11,
The top of electric connector end 14 is threaded through on pulling plate 24；It designs whereby, can prevent thermocouple instrument 11 from shaking phenomenon occur.
Fig. 1 and Fig. 4 is please referred to, the second embodiment of the present invention provides a kind of core temperature measurement dress for reactor
It sets, including heap top cock 3, multiple measurement columns 2 and elevating mechanism 4, multiple measurement columns 2 are threaded through the cock of heap top with being distributed in a ring
To be disposed around the periphery of center target pipe 31 on 3, it is installed with several thermocouple assemblies in each measurement column 2 respectively, in each measurement column 2
Several thermocouple assemblies it is corresponding with several fuel assemblies 32 of the center side Ba Guan31 respectively, elevating mechanism 4 for drive survey
Amount column 2 move up and down so that thermocouple assembly bottom end close to or far from reactor core 300.
Preferably, the quantity of elevating mechanism 4 is identical as the quantity of measurement column 2, to drive respectively to each measurement column 2
It is dynamic.
Specifically, elevating mechanism 4 is the ball-screw component being mounted vertically in heap top cock 3, in the present embodiment, rolling
At least a glide base 42 and the servo motor 43 that ballscrew component includes ball-screw 41, is slidably installed on ball-screw 41, rolling
Ballscrew 41 is fixed on the top of heap top cock 3, and 42 clamping measurement column 2 of glide base, servo motor 43 is for driving ball wire
Thick stick 41 and glide base 42 realize that the core temperature measuring device for reactor is high to drive measurement column 2 to move up and down whereby
Smoothness, high-precision the Automation Design.
Be described below second embodiment of the invention for reactor core temperature measuring device CIADS reactor into
The use example of 300 temperature of row reactor core measurement, the reactor core 300 of CIADS reactor as shown in Figure 4 share 72 box fuel stacks
Part 32, for the ease of measurement, arrange 27 thermocouple assemblies above reactor core 300, specifically, in the periphery of reactor core 300,
A thermocouple assembly is arranged in the top at the center per three adjacent box fuel assemblies 32, encloses in reactor core 300, per adjacent
A thermocouple assembly is arranged in the top at the center of two box fuel assemblies 32, is covered whereby by 27 thermocouple assemblies
72 box fuel assemblies 32.27 thermocouple instrument 11 are divided into three groups (every group includes nine thermocouple assemblies), three groups of heat
Galvanic couple component is separately mounted in three measurement columns 2, and three measurement columns 2 are threaded through in heap top cock 3 and enclose with being distributed in a ring
It is located at 31 periphery of center target pipe, by moving up and down for measurement column 2, thermocouple instrument 11 is close to reactor core 300 to carry out temperature detection
Or far from reactor core 300 to carry out the vacating space that reloads to fuel assembly 32 for refueling machine (not shown).
Compared with prior art, thermocouple assembly is installed in measurement column 2, and controlling measurement column 2 by lifting structure 4 reduces
Make to be installed in the thermocouple assembly of measurement column 2 close to reactor core 300, in order to thermocouple assembly thermocouple instrument 11 to reactor into
Trip temperature measurement；Controlling the raising of measurement column 2 by lifting structure 4 makes the thermocouple assembly for being installed in measurement column 2 far from reactor core
300, so that sufficient space of reloading is provided to refueling machine, and then when guarantee refueling machine gripping head motion positions, in reactor core 300
Top can 360 ° of covering reactor cores 300, carry out the distal end chip of the fuel assembly 32 of any reactor of point-to-point crawl；In addition, by
In the lifting for controlling measurement column 2 by lifting structure 4,3 volume of heap top cock for solving the prior art is excessive, so that increasing container
Diameter, reactor it is integrally excessive, increase coolant volume the problem of；And the core temperature for reactor of the invention is surveyed
It is simple, reliable, stable to measure device overall structure.In addition, being threaded through heap top cock 3 with being distributed in a ring by multiple measurement columns 2
The periphery of center target pipe 31 is gone up and be disposed around, is installed with several thermocouple assemblies respectively in each measurement column 2, can be avoided and center
It is interfered between target pipe 31, measurement column 2 and thermocouple assembly can move up and down under the driving of elevating mechanism 4, to be heap
It inside reloads and has vacateed space.For CIADS reactor, CIADS reactor-loop temperature range of operation be 280 DEG C~
It 380 DEG C, can be to avoid CIADS reactor-loop system by the monitoring of coolant (lead bismuth) temperature exported to reactor core 300
There is the risk of lead bismuth solidification, prevents to deviate the event operated normally；It on the other hand can also be to accident under accident conditions
Process carries out temperature monitoring, to protect the safety of reactor core 300.
The above disclosure is only a preferred example of the present invention, and the scope of the invention cannot be limited thereby,
Therefore equivalent changes made in accordance with the claims of the present invention belong to the range that the present invention is covered.
Claims (10)
1. a kind of core temperature measuring device for ADS lead base reactor, which is characterized in that including several thermocouple assemblies,
For installing measurement column, the cock of heap top and the elevating mechanism of the thermocouple assembly, the measurement column can be worn up or down
So that the bottom end of the thermocouple assembly is close or far from reactor core, the elevating mechanism is vertically-mounted in the cock of the heap top
In the cock of the heap top and for driving the measurement column to move up and down.
2. being used for the core temperature measuring device of ADS lead base reactor as described in claim 1, which is characterized in that the liter
Descending mechanism is the ball-screw component being mounted vertically in the cock of the heap top.
3. being used for the core temperature measuring device of ADS lead base reactor as described in claim 1, which is characterized in that the heat
Galvanic couple component includes thermocouple instrument and the gauge pipe for being arranged the thermocouple instrument, and the measurement column includes tube body and is formed in described
The end cap of tube body upper end, offers several through-holes on the end cap, and the upper end of the thermocouple instrument and the gauge pipe is by corresponding to
The through-hole stretch out the measurement column, the thermocouple instrument can be drawn upwardly out or be downwardly into the gauge pipe.
4. being used for the core temperature measuring device of ADS lead base reactor as claimed in claim 3, which is characterized in that the end
Junction between lid and the tube body is sealed processing.
5. being used for the core temperature measuring device of ADS lead base reactor as claimed in claim 3, which is characterized in that described logical
Junction between hole and the gauge pipe is sealed fixation.
6. being used for the core temperature measuring device of ADS lead base reactor as claimed in claim 3, which is characterized in that the instrument
Removable sealing is carried out between table pipe and the top of the thermocouple instrument to fix.
7. being used for the core temperature measuring device of ADS lead base reactor as claimed in claim 3, which is characterized in that the end
It covers and is equipped with support rod, the apical support of the support rod has the pulling plate opposite with the end cap, and the thermocouple assembly also wraps
Electric connector end is included, the bottom end of the electric connector end is connected with the top of the thermocouple instrument, the electric connector end
The top of head is threaded through on the pulling plate.
8. a kind of core temperature measuring device for ADS lead base reactor, which is characterized in that including the cock of heap top, multiple surveys
Amount column and elevating mechanism, multiple measurement columns are threaded through in the cock of the heap top to be disposed around center target pipe with being distributed in a ring
Periphery is installed with several thermocouple assemblies, several thermocouple groups in each measurement column in each measurement column respectively
Part is corresponding with several fuel assemblies of the side the center Ba Guan respectively, and the elevating mechanism is vertically installed at heap top cock
Go up and be used to that the measurement column to be driven to move up and down so that the thermocouple assembly bottom end close to or far from reactor core.
9. being used for the core temperature measuring device of ADS lead base reactor as claimed in claim 8, which is characterized in that the liter
The quantity of descending mechanism is identical as the quantity of the measurement column.
10. being used for the core temperature measuring device of ADS lead base reactor as claimed in claim 9, which is characterized in that the liter
Descending mechanism is the ball-screw component being mounted vertically in the cock of the heap top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810070085.9A CN108376571B (en) | 2018-01-24 | 2018-01-24 | Core temperature measuring device for reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810070085.9A CN108376571B (en) | 2018-01-24 | 2018-01-24 | Core temperature measuring device for reactor |
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| Publication Number | Publication Date |
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| CN108376571A CN108376571A (en) | 2018-08-07 |
| CN108376571B true CN108376571B (en) | 2019-10-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984243B (en) * | 2021-10-22 | 2023-11-10 | 中国原子能科学研究院 | Temperature detecting device |
| CN114005552B (en) * | 2021-10-28 | 2024-08-20 | 中国核动力研究设计院 | Heat pipe reactor integrated solid reactor core structure easy to measure reactor core temperature |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1062585A (en) * | 1996-08-13 | 1998-03-06 | Fuji Electric Co Ltd | Out-of-core fuel storage facility for fast reactor |
| JP2013228266A (en) * | 2012-04-25 | 2013-11-07 | Mitsubishi Heavy Ind Ltd | Arm support mechanism of fuel exchange device |
| JP2016045191A (en) * | 2014-08-25 | 2016-04-04 | コリア、ハイドロ、アンド、ニュークリア、パワー、カンパニー、リミテッドＫｏｒｅａ Ｈｙｄｒｏ ＆ Ｎｕｃｌｅａｒ Ｐｏｗｅｒ Ｃｏ．，Ｌｔｄ． | Multiple thermocouple furnace inner core measuring instrument, and nuclear reactor internal state monitoring system and monitoring method after serious accident using the same |
| KR20160051988A (en) * | 2014-10-30 | 2016-05-12 | 한국수력원자력 주식회사 | Long-Lived In-Core Instrumentation Assembly |
| CN105895175B (en) * | 2015-06-15 | 2017-11-07 | 广东核电合营有限公司 | A kind of method for demarcating nuclear reactor exit thermocouple |
| CN105741894B (en) * | 2016-03-30 | 2019-04-26 | 宁波奥崎自动化仪表设备有限公司 | Used in nuclear power station 1E order reaction heap core temperature measuring device |
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