CN209401324U - A kind of neutron flux pipe inspection integrated apparatus - Google Patents
A kind of neutron flux pipe inspection integrated apparatus Download PDFInfo
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- CN209401324U CN209401324U CN201821727026.6U CN201821727026U CN209401324U CN 209401324 U CN209401324 U CN 209401324U CN 201821727026 U CN201821727026 U CN 201821727026U CN 209401324 U CN209401324 U CN 209401324U
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- neutron flux
- valve
- helium
- flux pipe
- helium leak
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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
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Abstract
The utility model relates to nuclear power station maintenance technique fields, and in particular to one kind is suitable for nuclear reactor neutron flux pipe Hydrostatic test and helium checks integrated apparatus.After the completion of the preparation of neutron flux pipe spare part, for the needs of the water pressure test and non-destructive testing, leakage detection apparatus is designed, provides support for spare part quality inspection.In the present invention, helium leak check instrument is connected with helium leak test attachment device by fastener of bellows, and neutron flux pipe is connected with helium leak detector, and handle end is fixed in the seal section of intermediate host, and the seal section and seal ball-valve of intermediate host are bolted；When in helium leak check state, neutron flux pipe outer wall helium charging unit is connected by horizontal shut-off valve with seal ball-valve, and pressure gauge is connected by perpendicular shut-off valve with seal ball-valve；When in water pressure test state, water-pressure booster pump is connected by horizontal shut-off valve with seal ball-valve.The utility model not only increases efficiency, saves cost, moreover it is possible to preferable to realize leak detection purpose.
Description
Technical field
The present invention relates to nuclear power station maintenance technique fields, and in particular to it is whole that one kind is suitable for nuclear reactor neutron flux pipe
The water pressure test and helium check integrated apparatus.
Background technique
PWR nuclear power plant pile neutron flux tube, is commonly called as finger sleeve, is one of key equipment of PWR nuclear power plant,
The neutron flux pipe of different sizes of reactor it is in varying numbers, the quantity of conventional heap-type single unit neutron flux pipe is 20~50
Root.As the Measurement channel of reactor core Nuclear measurement system neutron flux, neutron flux pipe is evenly distributed in reactor fuel component channel,
Through fuel assembly, and it is exposed in heap in-core.Neutron flux pipe is primary Ioops pressure boundary, because of radiation embrittlement and Flow vibration
It is even damaged that caused mechanical wear can make its trommel, and then causes the leakage and pollution of primary Ioops coolant.
By taking 1000MWe nuclear power plant as an example, single unit has 50 neutron flux pipes, and length is 13~18 meters and differs.From state
From the point of view of inside and outside Experience Feedback, because 1000MWe nuclear power plant primary Ioops coolant loading amount is big and hot-working hydraulic characteristic is complicated, neutron flux
Pipe more changes jobs generally to be carried out, vigorous to the spare parts demand of neutron flux tube.
Since every neutron flux length of tube is different, nuclear power plant can not do spares reserve for each neutron flux pipe,
But it is unified according to longest dimension deposit, spare part using when spare part is then carried out according to the neutron flux pipe physical length needed to change
Preparation.The preparation of neutron flux pipe spare part is related to after the completion of the cutting of neutron flux pipe, groove polishing, welding, and preparation
The water pressure test, non-destructive testing etc..The originality of domestic nuclear power plant, the technology of preparing of underway sub- flux tube spare part was developed
A series of scientific and technical innovation is produced in journey.
It after the completion of the preparation of neutron flux pipe spare part, is required to do the water pressure test and non-destructive testing to each spare part, lead to
Final inspection is crossed to ensure that the quality of neutron flux pipe spare part is met the requirements.For the needs of the water pressure test and non-destructive testing, if
Meter makes a set of nuclear reactor neutron flux pipe Hydrostatic test and helium checks integrated apparatus, mentions for spare part quality inspection
For supporting.
Summary of the invention
Technology of the invention solves the problems, such as:
Pile neutron flux tube is the primary Ioops pressure boundary of nuclear reactor, is one of reactor core key equipment,
Nuclear reactor high temperature and high pressure environment is directly born, reliable sealing is the inevitable requirement of nuclear safety.Neutron flux pipe is whole at present
Spare part preparation is monopolized by foreign technology for a long time, the technology energy that domestic nuclear power plant does not have neutron flux pipe entirety spare part to prepare
Power, also without corresponding verifying attachment；The neutron flux pipe entirety spare part prepared is examined, needs one kind that can simulate nuclear reaction
The water test unit of heap reactor core pressure, and carry out the device of helium tightness inspection.
The technical solution of the invention is as follows:
The one makeup that can be used for the water pressure test and helium leak test simultaneously is designed and produced based on longest neutron flux length of tube
It sets, apparatus main body is made of water pressure test attachment device, intermediate host, helium leak test attachment device three parts, now to each section knot
Structure and function introduction are as follows:
A kind of nuclear reactor neutron flux pipe Hydrostatic test and helium check integrated apparatus, comprising: helium leak check
Instrument, helium leak test attachment device, seal ball-valve, neutron flux pipe outer wall helium charging unit, water-pressure booster pump, pressure gauge.Helium leak check
Instrument is connected with helium leak test attachment device by fastener of bellows, and neutron flux pipe is connected with helium leak test attachment device, handle end
It is fixed in the seal section of intermediate host, the seal section and seal ball-valve of intermediate host are bolted；When in helium leak check state,
Neutron flux pipe outer wall helium charging unit is connected by horizontal shut-off valve with seal ball-valve, and pressure gauge passes through perpendicular shut-off valve and seal ball-valve
It is connected；When in water pressure test state, water-pressure booster pump is connected by horizontal shut-off valve with seal ball-valve.
Helium leak test attachment device includes: helium calibration leak, aspirator vacuum pump, pumping isolating valve, verifies isolating valve,
In, pumping isolating valve is connected with aspirator vacuum pump, and verification isolating valve is connected with helium calibration leak.Helium leak test attachment device
It further include vacuum meter, vacuum meter is fixedly mounted on helium leak detector.
The right side connecting tube of helium leak test attachment device is divided into inner and outer tubes, wherein inner tube outside diameter 3mm is less than neutron
Flux bore；Outer tube is connected with the handle section of neutron flux pipe.Horizontal shut-off valve is in close state in pressure maintaining.
Intermediate host is stainless-steel seamless pipe.The length of intermediate host, material, thickness are and the neutron that uses is logical
Buret is consistent.
The present invention has the beneficial effect that compared with prior art
1) integrated apparatus structure is simple, and sealing joint is high, can bear 30MPa high pressure, is also able to satisfy helium sealing and wants
It asks；
2) integrated apparatus has the interface being connected with water test unit, can carry out the neutron flux pipe water pressure test；
3) integrated apparatus has the interface being connected with helium check device, can carry out neutron flux pipe helium inspection；
4) integrated apparatus is able to achieve neutron flux pipe and integrally suppresses, leak detection and seal assembly service check demand；
5) entirety that integrated apparatus is able to achieve different length neutron flux pipe is suppressed, leak detection.
Detailed description of the invention
Fig. 1 helium check device structure chart
Fig. 2 helium leak test connection device structure diagram
Fig. 3 water test unit structure chart
In figure: 1, helium leak check instrument；2, helium calibration leak；3, aspirator vacuum pumps；4, helium leak test attachment device；5, vacuum
Meter；6, neutron flux pipe；7, seal section；8, seal ball-valve；9, neutron flux pipe outer wall helium charging unit；10, it is evacuated isolating valve；
11, isolating valve is verified；12, water-pressure booster pump；13, pressure gauge；14, connecting tube；15, shut-off valve is erected；16, horizontal shut-off valve.
Specific embodiment
The present invention will be described in detail in the following with reference to the drawings and specific embodiments:
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of nuclear reactor neutron flux pipe Hydrostatic test and helium check integration
Device, comprising: helium leak check instrument 1, helium leak test attachment device 4, seal ball-valve 8, neutron flux pipe outer wall helium charging unit 9, hydraulic pressure
Booster pump 12, pressure gauge 13.Helium leak check instrument 1 is connected with helium leak test attachment device 4 by fastener of bellows, neutron flux pipe 6
It is connected with helium leak detector 4, handle end is fixed in the seal section 7 of intermediate host, the seal section 7 and ball sealer of intermediate host
Valve 8 is bolted；When in helium leak check state, neutron flux pipe outer wall helium charging unit 9 passes through horizontal shut-off valve 16 and ball sealer
Valve 8 is connected, and pressure gauge 13 is connected by perpendicular shut-off valve 15 with seal ball-valve 8；When in water pressure test state, water-pressure booster pump
12 are connected by horizontal shut-off valve 16 with seal ball-valve 8.
Helium leak detector 4 includes: helium calibration leak 2, aspirator vacuum pump 3, pumping isolating valve 10, verification isolating valve
11, wherein pumping isolating valve 10 is connected with aspirator vacuum pump 3, and verification isolating valve 11 is connected with helium calibration leak 2.Helium
Gas leakage detection apparatus 4 further includes vacuum meter 5, and vacuum meter 5 is fixedly mounted on helium leak detector.
The right side connecting tube 14 of helium leak test attachment device 4 divides for inner and outer tubes, wherein inner tube outside diameter 3mm is less than
Sub- flux bore；Outer tube is connected with the handle section of neutron flux pipe 6.Shut-off valve 16 is in close state in pressure maintaining.
Intermediate host is stainless-steel seamless pipe.The length of intermediate host, material, thickness are and the neutron that uses is logical
Buret is consistent.
As shown in figure 3, water pressure test attachment device: water test unit is disguised for connecting hydraulic testpump and one
Set the attachment device of main body, You Yitai water-filling isolating valve, an exhaust isolating valve and jointing composition.The water pressure test is connected
Device is connected with intermediate host, and helium leak test attachment device does not need to connect.Neutron flux pipe is packed into intermediate host, and handle end exists
The seal section of intermediate host is fixed, and seal section upstream and downstream nut is fastened according to torque requirement and completed；Hydraulic testpump is connected to water
Press test connecting device；The pressure gauge connection position of pressure gauge loading intermediate host.After the completion of water test unit connection
Water-filling is carried out according to water pressure test program, is vented, suppresses, pressure maintaining and product test.
Intermediate host: main part by the stainless-steel seamless pipe guide pipe of neutron flux pipe (simulation), pressure gauge connection,
Neutron flux seal of tube section composition.
Main part is the core of integrated apparatus, has enough sealings and bearing capacity, and pressure gauge connection is used
In the pressure gauge of the installation water pressure test, neutron flux seal of tube section forms water pressure test boundary for sealing neutron flux pipe.
As shown in Fig. 2, helium leak test attachment device: helium leak test attachment device is by pumping isolating valve, verification isolating valve, vacuum meter
Interface, neutron flux pipe handle connecting interface and helium mass analyzer connecting interface composition.By water pressure test attachment device, helium leak test
Attachment device is connected with intermediate host, and water pressure test attachment device isolating valve is closed.Neutron flux pipe is packed into intermediate host,
Handle end is fixed in the seal section of intermediate host, and seal section upstream and downstream nut is fastened according to torque requirement and completed；Helium mass analyzer connects
It is connected to helium leak test attachment device；Vacuum meter is packed into helium leak test attachment device vacuum meter interface.After the completion of the connection of helium check device
Can according to helium check program be inflated, pressure maintaining, pumping check, verification etc..Pumping can be realized by helium leak test attachment device
Gas, verification, vacuum degree such as show at the functions.
Seal assembly service check: water pressure test attachment device, helium leak test attachment device are connected with intermediate host, dress
The neutron flux seal of tube component for entering to need to carry out service check is packed into seal section, can pass through the water pressure test and helium inspection
Mode examines the sealing performance of seal assembly.
Integrated apparatus has following feature:
Integrated apparatus one end is provided with water pressure test interface, and the other end is provided with helium and checks interface.One is dual-purpose, both
It can be used for whole suppress, it can also be used to helium inspection.
Integrated apparatus interface uses screw thread, and quick connector form facilitates water test unit and helium check device
Installation.
Integrated apparatus length is set according to longest neutron flux pipe, the guiding of material and thickness reference neutron flux pipe
Pipe size.
Steel pipe used in integrated apparatus is that stainless-steel seamless pipe, material and specification are true referring to the guide pipe of neutron flux pipe
It is fixed.
The invention has the advantages that:
A kind of nuclear reactor neutron flux pipe Hydrostatic test and helium check integrated apparatus, and structure is simple, interface
Leakproofness is high, can bear 30MPa high pressure, also be able to satisfy helium seal request；The device, which has, to be connected with water test unit
Interface can carry out the neutron flux pipe water pressure test；Meanwhile the device also has the interface being connected with helium check device, it can be into
Row neutron flux pipe helium inspection；It is integrally suppressed, is hunted leak using the neutron flux pipe that the device is able to achieve different length, Yi Jimi
Sealing assembly service check demand；Efficiency is not only increased, cost is saved, moreover it is possible to is preferable to realize leak detection purpose.
Claims (7)
1. a kind of neutron flux pipe checks integrated apparatus, comprising: helium leak check instrument (1), helium leak test attachment device (4), sealing
Ball valve (8), neutron flux pipe outer wall helium charging unit (9), water-pressure booster pump (12), pressure gauge (13), it is characterised in that: described
Helium leak check instrument (1) is connected with helium leak test attachment device (4) by fastener of bellows, and neutron flux pipe (6) is connected with helium leak test
Device (4) is connected, and handle end is fixed in the seal section (7) of intermediate host, the seal section (7) and seal ball-valve of intermediate host
(8) it is bolted；When in helium leak check state, neutron flux pipe outer wall helium charging unit (9) passes through horizontal shut-off valve (16) and close
Blocking valve (8) is connected, and pressure gauge (13) is connected by perpendicular shut-off valve (15) with seal ball-valve (8)；When in water pressure test state,
Water-pressure booster pump (12) is connected by horizontal shut-off valve (16) with seal ball-valve (8).
2. a kind of neutron flux pipe as described in claim 1 checks integrated apparatus, it is characterised in that: the helium leak test connects
Connection device (4) includes: helium calibration leak (2), aspirator vacuum pump (3), pumping isolating valve (10), verifies isolating valve (11),
In, pumping isolating valve (10) is connected with aspirator vacuum pump (3), and verification isolating valve (11) is connected with helium calibration leak (2).
3. a kind of neutron flux pipe as claimed in claim 2 checks integrated apparatus, it is characterised in that: the helium leak test connects
Connecting tube (14) is divided into inner and outer tubes on the right side of connection device (4), wherein inner tube outside diameter 3mm is less than neutron flux bore；
Outer tube is connected with the handle section of neutron flux pipe (6).
4. a kind of neutron flux pipe as described in claim 1 checks integrated apparatus, it is characterised in that: the horizontal shut-off valve
(16) it is in close state in pressure maintaining.
5. a kind of neutron flux pipe as described in claim 1 checks integrated apparatus, it is characterised in that: the intermediate host
For stainless-steel seamless pipe.
6. a kind of neutron flux pipe as claimed in claim 2 checks integrated apparatus, it is characterised in that: the helium leak test connects
Connection device (4) further includes vacuum meter (5), and vacuum meter (5) is fixedly mounted on helium leak detector.
7. a kind of neutron flux pipe as claimed in claim 5 checks integrated apparatus, it is characterised in that: the intermediate host
Length, material, thickness it is consistent with the neutron flux pipe used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727026.6U CN209401324U (en) | 2018-10-24 | 2018-10-24 | A kind of neutron flux pipe inspection integrated apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821727026.6U CN209401324U (en) | 2018-10-24 | 2018-10-24 | A kind of neutron flux pipe inspection integrated apparatus |
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| Publication Number | Publication Date |
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| CN209401324U true CN209401324U (en) | 2019-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821727026.6U Active CN209401324U (en) | 2018-10-24 | 2018-10-24 | A kind of neutron flux pipe inspection integrated apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111091918A (en) * | 2018-10-24 | 2020-05-01 | 中核核电运行管理有限公司 | Neutron flux tube inspection integrated device |
| CN113936827A (en) * | 2021-09-10 | 2022-01-14 | 中广核核电运营有限公司 | Pressurizing device and pressurizing method for RIC (Rich care center) finger sleeve sealing assembly |
| CN116206790B (en) * | 2023-02-17 | 2024-02-06 | 中核检修有限公司 | Neutron flux tube processing apparatus and method |
-
2018
- 2018-10-24 CN CN201821727026.6U patent/CN209401324U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111091918A (en) * | 2018-10-24 | 2020-05-01 | 中核核电运行管理有限公司 | Neutron flux tube inspection integrated device |
| CN113936827A (en) * | 2021-09-10 | 2022-01-14 | 中广核核电运营有限公司 | Pressurizing device and pressurizing method for RIC (Rich care center) finger sleeve sealing assembly |
| CN113936827B (en) * | 2021-09-10 | 2023-11-17 | 中广核核电运营有限公司 | RIC (RIC) refers to casing sealing assembly pressing device and pressing method thereof |
| CN116206790B (en) * | 2023-02-17 | 2024-02-06 | 中核检修有限公司 | Neutron flux tube processing apparatus and method |
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