CN108269634A - A kind of used in nuclear power station includes the in-pile instrument sheath assembly of isometric arrangement detector - Google Patents
A kind of used in nuclear power station includes the in-pile instrument sheath assembly of isometric arrangement detector Download PDFInfo
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- CN108269634A CN108269634A CN201810044933.9A CN201810044933A CN108269634A CN 108269634 A CN108269634 A CN 108269634A CN 201810044933 A CN201810044933 A CN 201810044933A CN 108269634 A CN108269634 A CN 108269634A
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- Prior art keywords
- detector
- welded
- connect
- sheath assembly
- shell
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Links
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 150000002927 oxygen compounds Chemical class 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/112—Measuring temperature
-
- 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)
- Measurement Of Radiation (AREA)
Abstract
The present invention provides the in-pile instrument sheath assembly that a kind of used in nuclear power station includes isometric arrangement detector, including：Armoured thermocouple (9), collector (5), branched self-power neutron detector (10)；Wherein, the armoured thermocouple (9) and the branched self-power neutron detector (10) are connected by fixing bracket (11).Used in nuclear power station provided by the invention includes the in-pile instrument sheath assembly of isometric arrangement detector, is directly inserted into reactor pressure vessel into trip temperature and the instrumentation thimble of neutron measurement, can operate with the in-core instrumentation system in most of compressed water reactor nuclear power heap-type.
Description
Technical field
The present invention relates to nuclear power station in-core instrumentation system measuring techniques more particularly to heap core inner neutron fluence rate to measure
Instrument.
Background technology
In-core instrumentation system carries out the critical system that heap in-core neutron fluence rate measures during being reactor operation.Nuclear power station
It is the harsh environment of high temperature, high pressure and high irradiation in normal course of operation, in reactor pressure vessel.When reactor operation power
In more than 20% rated power, need continuously to monitor current neutron fluence rate value using in-core instrumentation system, remind behaviour
Vertical member's reactor safety allowance, and correspondingly control reactivity.For the insufficient cooling monitoring of reactor core after accident, need to measure heap
Core outlet temperature.
In-pile instrument sheath assembly (IITA) described in the invention is used for in-core instrumentation system.In-pile instrument casing group
Part includes being encapsulated in branched isometric formula arrangement self-power neutron detector (SPD) and 1 thermocouple in a metal shell
(CET).Detector connect fixation by hermetic collar with the fast dismounting seal assembly on top cover of reactor pressure vessel, and end is
Connector.It present invention can be suitably applied to the temperature survey of nuclear power station reactor core outlet and the measurement of reactor core neutron fluence rate.
To reduce the interface of nuclear instrument inside reactor pressure vessel, reducing complexity and then improving reliability, reactor core
Thermocouple and self-power neutron detector are integrated in instrumentation thimble component.Its main function is continuously measures each neutron detection
The neutron fluence rate signal of reactor capability density is directly proportional to around device.
Self-powered detector (SPD) is made of emitter, insulator and collector.SPD be it is a kind of without applied voltage,
Radiation field interior energy voluntarily generates a kind of solid probe of output current, while has compact, simple in structure, at low cost, Yi An
The advantages that dress, long lifespan, resistance to high irradiation and high temperature resistance.
China's nuclear power is greatly developed at present, and scale constantly expands, growing day by day for the demand of in-pile instrument sheath assembly,
And it requires to improve the nuclear instrument localization rate of parts and components.And the in-pile instrument sheath assembly of isometric formula arrangement self-powered detector is included in state
Inside and outside is a kind of novel in-pile instrument sheath assembly all without correlative study and application, and technical difficulty is high, more novel.
Invention content
In view of the deficiencies of the prior art, the present invention proposes the in-pile instruments that a kind of used in nuclear power station includes isometric arrangement detector
Sheath assembly.
The present invention provides the in-pile instrument sheath assembly that a kind of used in nuclear power station includes isometric arrangement detector, and feature exists
In, including：Armoured thermocouple (9), collector (5), branched self-power neutron detector (10), shell (8), connector (7), flexibility are close
Seal flexible cable (4), rear shell (3), electrical cnnector (2), dust cover (1) and sub warhead end plug (12)；Wherein, the armouring thermoelectricity
Even (9) and the branched self-power neutron detector (10) are connected by fixing bracket (11), are placed in shell (8)；Shell (8)
With sub warhead end plug (12) by being welded to connect, the other end is welded to connect by connector (7) and collector (5) for one end；Collector (5) is another
One end is welded to connect with flexible sealing cable (4), and flexible sealing cable (4) is welded to connect with rear shell (3)；Rear shell (3) with it is electrical
Connector (2) is welded to connect, and dust cover (1) is screwed on electrical cnnector (2).
Preferably, the branched self-power neutron detector (10) includes emitter (13), collection body (15), insulator
(14) and signal core line (16)；Wherein, branched self-power neutron detector (10) the setting one bars core wire (16) and one
The corresponding background signal line (17) of item；Wherein, the signal core line (16) and the background signal line (17) pass through a letter
The transmission of number cable (18).
Preferably, the structure of the branched self-power neutron detector (10) is identical, and in sheath assembly in an axial direction according to
It is secondary to be equally spaced.
Preferably, the branched self-power neutron detector (10) is without external power supply, and is configured to by sensitivity
Material absorbs neutron, and launching electronics generate electric current；The branched self-power neutron detector (10) is low burn consumption material.
Preferably, the insulating materials of the branched self-power neutron detector (10) uses high purity oxygen compound.
Preferably, one end of the collector (5) is connect with flexible sealing flexible cable (4), and the other end is by connector (7) and outside
Shell (8) connects.
Preferably, the flexible sealing flexible cable (4) is welded to connect with rear shell (3), rear shell (3) and electrical cnnector (2)
It is welded to connect, dust cover (1) is screwed on electrical cnnector (2)；Armoured thermocouple (9) and branched self-power neutron detector (10)
Lead is welded to connect with electrical cnnector (2) terminal, and shell (8) front end is welded to connect with sub warhead end plug (12), bullet head end
Plug (12) welds end socket after shell inflated with nitrogen.
Compared with prior art, the invention has the advantages that：
1st, used in nuclear power station provided by the invention includes the in-pile instrument sheath assembly of isometric arrangement detector, can directly insert
Enter in reactor pressure vessel into trip temperature and the instrumentation thimble of neutron measurement, can operate in most of compressed water reactor nuclear power heap-type
In-core instrumentation system.
Description of the drawings
Fig. 1 be meet the preferred embodiment of the present invention used in nuclear power station include it is isometric arrangement detector in-pile instrument casing group
The structure chart of part.
Fig. 2 is the layout drawing for the isometric self-powered detector for meeting the preferred embodiment of the present invention.
Fig. 3 is the structure chart for the self-powered detector for meeting the preferred embodiment of the present invention.
Fig. 4 is the in-pile instrument sheath assembly section B-B figure for meeting the preferred embodiment of the present invention.
Fig. 5 is the mechanism figure for the vanadium self-powered detector generation electric current for meeting the preferred embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
As shown in Figs. 1-5, used in nuclear power station provided by the invention includes the in-pile instrument of isometric formula arrangement self-powered detector
Sheath assembly, including armoured thermocouple (9), collector (5), branched self-power neutron detector (10).Armoured thermocouple (9) and from
(11) are fixed together by fixing bracket to moderate energy neutron detector (10), the self-power neutron detector (10) is by emitter
(13), body (15), insulator (14) and signal core line (16) composition, structure chart are collected and sees Fig. 3.Wherein neutron detector is set
One bars core wire (16) background signal line (17) corresponding with one for offsetting the signal noise in reactor, is improved and is visited
Survey the signal accuracy of device.Wherein signal core line and background signal line are transmitted by a signal cable (18).
Branched self-power neutron detector form structure in casing is consistent, is equally spaced successively in an axial direction in casing,
As shown in Figure 1.Self-power neutron detector does not need to external power supply, absorbs neutron, transmitting by sensitive material in reactor
Electronics generates electric current, wherein typically the mechanism using vanadium material as emitter is shown in Fig. 5.Self-power neutron detector is consumed for low burn
Material lasts a long time.Self-powered detector insulating materials uses high purity oxygen compound, and material is not easy the moisture absorption, non-aging, high temperature
Insulation resistance is high, and influence is penetrated on neutron less, can effectively improve the measurement accuracy of self-power neutron detector, itself service life is remote
Far beyond the service life of self-power neutron detector, so the service life to detector has no adverse effect.
Collector (5) one end is connect with flexible sealing flexible cable (4), and the other end is connect by connector (7) with shell (8).It is soft
Property sealing flexible cable (4) be welded to connect with rear shell (3), rear shell (3) is welded to connect with electrical cnnector (2), electrical cnnector (2)
On be screwed with dust cover (1).Armoured thermocouple (9) and branched self-power neutron detector (10) lead are held with electrical cnnector (2)
Son is welded to connect, and shell (8) front end is welded to connect with sub warhead end plug (12), and sub warhead end plug (12) welds after shell inflated with nitrogen
Connect end socket.
Specifically, as shown in Figure 1, a kind of used in nuclear power station includes isometric arrangement self-powered detector in-pile instrument casing group
Part, including dust cover 1, electrical cnnector 2, rear shell 3, flexible sealing flexible cable 4, collector 5, hermetic collar 6, connector 7, shell 8,
Thermocouple 9, neutron detector 10, fixing bracket 11, sub warhead end plug 12.
Thermocouple 9 and branched neutron detector 10 are fixed on fixing bracket 11.Neutron detector 10 is self-supporting moderate energy neutron
Detector is made of emitter 13, collection body 15, insulator 14 and signal core line 16, and branched 10 specification of neutron detector is consistent,
It is equally spaced successively in an axial direction in sheath assembly along fixing bracket 11, as shown in Figure 2.
5 one end of collector is connect with flexible sealing flexible cable 4, and 5 other end of collector is welded to connect by connector 7 and shell 8, soft
Property sealing flexible cable 4 welded with rear shell 3, thermocouple 9 and 10 lead of neutron detector and the welding of 2 terminal of electrical cnnector, rear shell 3
It is welded with electrical cnnector 2, dust cover 1 is screwed on connector 2, and 5 one end of collector is welded by connector 7 and shell 8, in shell 8
Sub warhead end plug 12 welds end socket after inflated with nitrogen.
As shown in figure 3, neutron detector sets a bars core wire and a corresponding background signal line, it is anti-for offsetting
The signal noise in heap is answered, improves the signal accuracy of detector.
The offseting signal line noise signal of itself improves detector sensitivity.
Compared with prior art, the present embodiment has the advantages that：
1st, used in nuclear power station provided in this embodiment includes the in-pile instrument sheath assembly of isometric arrangement detector, can be direct
Into trip temperature and the instrumentation thimble of neutron measurement in intercalation reaction core pressure vessel, most of compressed water reactor nuclear power heap-type can operate with
In in-core instrumentation system.
Those skilled in the art can realize described function to each specific application using distinct methods, but
It is this realization it is not considered that beyond the scope of this invention.
Obviously, those skilled in the art can carry out invention spirit of the various modification and variations without departing from the present invention
And range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range it
Interior, then the present invention is also intended to including these modification and variations.
Claims (7)
1. a kind of used in nuclear power station includes the in-pile instrument sheath assembly of isometric arrangement detector, which is characterized in that including：Armouring heat
Galvanic couple (9), collector (5), branched self-power neutron detector (10), shell (8), connector (7), flexible sealing flexible cable (4), after
Shell (3), electrical cnnector (2), dust cover (1) and sub warhead end plug (12)；Wherein, the armoured thermocouple (9) and described more
Branch self-power neutron detector (10) is connected by fixing bracket (11), is placed in shell (8)；Shell (8) one end and sub warhead
By being welded to connect, the other end is welded to connect end plug (12) by connector (7) and collector (5)；Collector (5) other end and flexibility are close
Envelope cable (4) is welded to connect, and flexible sealing cable (4) is welded to connect with rear shell (3)；Rear shell (3) is welded with electrical cnnector (2)
Connection, dust cover (1) are screwed on electrical cnnector (2).
2. used in nuclear power station as described in claim 1 includes the in-pile instrument sheath assembly of isometric arrangement detector, feature exists
In the branched self-power neutron detector (10) includes emitter (13), collection body (15), insulator (14) and signal core line
(16)；Wherein, the branched self-power neutron detector (10) sets a bars core wire (16) and a corresponding background
Signal wire (17)；Wherein, the signal core line (16) and the background signal line (17) are transmitted by a signal cable (18).
3. used in nuclear power station as described in claim 1 includes the in-pile instrument sheath assembly of isometric arrangement detector, feature exists
In the structure of the branched self-power neutron detector (10) is identical, and is equally spaced successively in an axial direction in sheath assembly.
4. used in nuclear power station as described in claim 1 includes the in-pile instrument sheath assembly of isometric arrangement detector, feature exists
In, the branched self-power neutron detector (10) is configured to absorb neutron by sensitive material without external power supply,
Launching electronics generate electric current；The branched self-power neutron detector (10) is low burn consumption material.
5. used in nuclear power station as described in claim 1 includes the in-pile instrument sheath assembly of isometric arrangement detector, feature exists
In the insulating materials of the branched self-power neutron detector (10) uses high purity oxygen compound.
6. used in nuclear power station as described in claim 1 includes the in-pile instrument sheath assembly of isometric arrangement detector, feature exists
In one end of the collector (5) is connect with flexible sealing flexible cable (4), and the other end is connect by connector (7) with shell (8).
7. used in nuclear power station as claimed in claim 6 includes the in-pile instrument sheath assembly of isometric arrangement detector, feature exists
In the flexible sealing flexible cable (4) is welded to connect with rear shell (3), and rear shell (3) is welded to connect with electrical cnnector (2), electrically
Dust cover (1) is screwed on connector (2)；Armoured thermocouple (9) and branched self-power neutron detector (10) lead are with electrically connecting
It connects device (2) terminal to be welded to connect, shell (8) front end is welded to connect with sub warhead end plug (12), and sub warhead end plug (12) is in shell
End socket is welded after inflated with nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810044933.9A CN108269634A (en) | 2018-01-17 | 2018-01-17 | A kind of used in nuclear power station includes the in-pile instrument sheath assembly of isometric arrangement detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810044933.9A CN108269634A (en) | 2018-01-17 | 2018-01-17 | A kind of used in nuclear power station includes the in-pile instrument sheath assembly of isometric arrangement detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108269634A true CN108269634A (en) | 2018-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810044933.9A Pending CN108269634A (en) | 2018-01-17 | 2018-01-17 | A kind of used in nuclear power station includes the in-pile instrument sheath assembly of isometric arrangement detector |
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| Country | Link |
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| CN (1) | CN108269634A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175808A (en) * | 2020-01-02 | 2020-05-19 | 中国原子能科学研究院 | Assembly and testing method based on assembly |
| CN111326269A (en) * | 2020-02-28 | 2020-06-23 | 中广核研究院有限公司 | Reactor core measuring sensor based on self-powered detector and thermocouple |
| CN112687412A (en) * | 2020-12-28 | 2021-04-20 | 兰州大学 | Reactor core fast neutron flux self-powered detector |
| CN112698381A (en) * | 2020-12-28 | 2021-04-23 | 兰州大学 | Self-powered neutron detector |
| CN115431211A (en) * | 2022-09-13 | 2022-12-06 | 成都信息工程大学 | Reactor core detector installation device and method |
| WO2024109908A1 (en) * | 2022-11-25 | 2024-05-30 | 上海核工程研究设计院股份有限公司 | Complete measurement and processing system for reactor core instrument |
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| FR3019932A1 (en) * | 2014-04-14 | 2015-10-16 | Areva Np | SELF-DIRECTED NEUTRON DETECTOR OF A PRESSURIZED WATER REACTOR |
| CN106531245A (en) * | 2016-11-25 | 2017-03-22 | 浙江伦特机电有限公司 | Thimble assembly of in-core instrument for nuclear power station |
| CN207909508U (en) * | 2018-01-17 | 2018-09-25 | 上海核工程研究设计院有限公司 | A kind of used in nuclear power station includes the in-pile instrument sheath assembly of isometric arrangement detector |
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2018
- 2018-01-17 CN CN201810044933.9A patent/CN108269634A/en active Pending
Patent Citations (5)
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| CN201653575U (en) * | 2010-04-07 | 2010-11-24 | 安徽省众和电仪科技有限公司 | Dedicated thermocouple for furnace bottom |
| US20130083879A1 (en) * | 2011-10-04 | 2013-04-04 | Westinghouse Electric Company Llc | In-core instrument thimble assembly |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175808A (en) * | 2020-01-02 | 2020-05-19 | 中国原子能科学研究院 | Assembly and testing method based on assembly |
| CN111326269A (en) * | 2020-02-28 | 2020-06-23 | 中广核研究院有限公司 | Reactor core measuring sensor based on self-powered detector and thermocouple |
| CN112687412A (en) * | 2020-12-28 | 2021-04-20 | 兰州大学 | Reactor core fast neutron flux self-powered detector |
| CN112698381A (en) * | 2020-12-28 | 2021-04-23 | 兰州大学 | Self-powered neutron detector |
| CN115431211A (en) * | 2022-09-13 | 2022-12-06 | 成都信息工程大学 | Reactor core detector installation device and method |
| CN115431211B (en) * | 2022-09-13 | 2023-06-20 | 成都信息工程大学 | Reactor core detector mounting device and method |
| WO2024109908A1 (en) * | 2022-11-25 | 2024-05-30 | 上海核工程研究设计院股份有限公司 | Complete measurement and processing system for reactor core instrument |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Applicant after: ZHEJIANG LUNTE ELECTROMECHANICAL CO.,LTD. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant before: ZHEJIANG LUNTE ELECTROMECHANICAL CO.,LTD. |
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