CN109443654A - A kind of steam generator helium mass spectrum leak detection system and leak hunting method - Google Patents
A kind of steam generator helium mass spectrum leak detection system and leak hunting method Download PDFInfo
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- CN109443654A CN109443654A CN201811575080.8A CN201811575080A CN109443654A CN 109443654 A CN109443654 A CN 109443654A CN 201811575080 A CN201811575080 A CN 201811575080A CN 109443654 A CN109443654 A CN 109443654A
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- 239000001307 helium Substances 0.000 title claims abstract description 121
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 121
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000001819 mass spectrum Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 113
- 239000007789 gas Substances 0.000 claims abstract description 43
- 238000004458 analytical method Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000007689 inspection Methods 0.000 claims description 14
- 238000007405 data analysis Methods 0.000 claims description 9
- 238000012790 confirmation Methods 0.000 claims description 5
- 238000013480 data collection Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 241000486406 Trachea Species 0.000 claims description 4
- 238000012550 audit Methods 0.000 claims description 4
- 230000004807 localization Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 210000003437 trachea Anatomy 0.000 claims description 4
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000003434 inspiratory effect Effects 0.000 claims description 3
- 238000007726 management method Methods 0.000 claims description 3
- 238000011990 functional testing Methods 0.000 claims description 2
- 238000009659 non-destructive testing Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
-
- 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)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the non-destructive testing of steam generator heat-transfer pipe and similar heat exchange equipment and maintenance technique fields, more particularly to a kind of steam generator helium mass spectrum leak detection system and leak hunting method, in order to it is big to solve the problems, such as that temperature gas cooled reactor steam generator heat-transfer pipe implements non-destructive testing difficulty.It is characterized by: it includes suction gun positioning device, suction gun component, flow control system, helium mass spectrometer leak detector system, physical data measuring system, Data collecting and analysis system；Suction gun component is mounted in suction gun positioning device；Suction gun positioning device is mounted on evaporator water chamber；Flow control system is connect with suction gun component；Helium mass spectrometer leak detector system is connect with suction gun component；Physical data measuring system is connect with flow control system, helium mass spectrometer leak detector system, temperature sensor, pressure sensor, concentrations of helium sensor respectively；Data collecting and analysis system is connect with suction gun positioning device and physical data measuring system respectively.
Description
Technical field
The invention belongs to the non-destructive testing of steam generator heat-transfer pipe and similar heat exchange equipment and maintenance technique fields, specifically
It is related to a kind of steam generator helium mass spectrum leak detection system and leak hunting method.
Background technique
In order to guarantee high temperature gas-cooled heap-type nuclear power station key equipment steam generator safe and reliable operation, it is necessary to periodically to it
Heat-transfer pipe is overhauled.To there are the heat-transfer pipes of excessive defect, and the technological means such as plugging to be taken to keep its retired in time, to ensure core
Power plant safety operation.High temperature gas cooled reactor is nuclear power heap-type of new generation, compared with having run heap-type, temperature gas cooled reactor steam generator
There are larger differences for the structure type of heat-transfer pipe, and running environment is also far different, and traditional test mode has been unable to meet inspection
Requirement.The structure of temperature gas cooled reactor steam generator heat-transfer pipe is spiral coil, and bending radius is small, the biography of main feed-water intake
Heat pipe front end is equipped with orifice union, and connection and fixed form with heat-transfer pipe can all influence the close of check device and heat-transfer pipe
Envelope.Temperature gas cooled reactor steam generator environment space size is far smaller than the water chamber of pressurized-water reactor nuclear power plant, fills to helium mass spectrum inspection
The size limitation set is bigger.It is directed to a variety of lossless detection methods of temperature gas cooled reactor steam generator helical structure heat-transfer pipe at present
Feasibility inservice inspection research do not have breakthrough, domestic and international nuclear power plant is not yet to temperature gas cooled reactor steam generator
Coil heat-transfer pipe carry out inservice inspection precedent.
Summary of the invention
Big the purpose of the present invention is to solve temperature gas cooled reactor steam generator heat-transfer pipe implementation non-destructive testing difficulty
Problem, invents a kind of steam generator Helium Leak Test, which can be spiral shell for steam generator heat-transfer pipe
The characteristics of capstan pipe, implement automatic detection, this method can satisfy the inspection skill of temperature gas cooled reactor steam generator heat-transfer pipe
Art requirement, is quantified and is positioned to the leak source on heat-transfer pipe, filled up in this technical blank, and can will wherein core skill
Art is generalized to conventional PWR steam generator heat-transfer pipe and examines in the application of equipment.
The present invention is implemented as follows:
Temperature gas cooled reactor steam generator heat-transfer pipe helium mass spectrum leak detection is divided into two parts: being quantified and is positioned to leak source.
The basic principle of temperature gas cooled reactor steam generator heat-transfer pipe helium mass spectrum leak detection quantitative technique is by steam generator
Shell-side is filled with the helium of certain pressure and concentration, and when heat-transfer pipe is there are when leak source, pressure difference can be such that helium leaks by leak source
Inside heat-transfer pipe, the getter assembly by being fixed on heat-transfer pipe nozzle is sucked out, and carries out helium content analysis, root by helium mass analyzer
According to the helium signal value size that Helium leak detector reacts, the leakage rate size of leak source is calculated.Steam generator heat-transfer pipe leakage is fixed
The basic principle of position technology is when heat-transfer pipe is there are when leak source, and at leakage, the variation of inspiratory flow can cause helium concentration immediately
Variation.Helium signal value is detected after the response time by helium mass analyzer.Display helium signal intensity needed for the time with cause
The distance between the defect of leakage and suction gun end are directly directly proportional.
Steam generator heat-transfer pipe quantitative technique scheme is that suction gun positioning device 1 is mounted on steam generator water chamber 11,
And the suction gun component 2 containing 2 sets of suction guns and inlet sleeve is carried, and it is automatically positioned, it is any one in suction gun component 2 to guarantee
A inlet sleeve can reach all 12 lower sections of orifice union being connected with heat-transfer pipe 10.Make 2 air-breathing sets in suction gun component 2
Cylinder contact formation with 2 throttling resistors 12 respectively and seals, starting flow control system 3, and by the gas stream inside 2 heat-transfer pipes
Amount is set as Q1, so that forming negative pressure gas flow inside heat-transfer pipe 10,2 10 internal gas of heat-transfer pipe is sucked out respectively, will leak
Helium out is transferred to heat-transfer pipe nozzle from leak source, and then the suction gun being connected on suction gun component 2 is drawn into helium matter
Spectrometer leak detection system 4 records the letter of 2 helium mass spectrometer leak detectors in helium mass spectrometer leak detector system 4 using physical data measuring system 5
Number value, is denoted as background I0 and I0 ', while recording the numerical value of 2 temperature sensors 7, pressure sensor 8, concentrations of helium sensor 9
With actual flow value Q1 ' and the Q1 ＂ inside 2 heat-transfer pipes, the data transfer for being recorded physical data measuring system 5 by local area network
To Data collecting and analysis system 6.Suction gun component 2 and throttling resistor 12 are separated.Then, steam generator shell-side is filled with one
The helium of constant-pressure and concentration.It will be carried again containing the suction gun component 2 and 2 piece of 2 sets of suction guns and inlet sleeve throttling resistor 12
Contact forms sealing, and starts flow control system 3, and the gas flow inside 2 heat-transfer pipes is set as Q1, respectively by 2
10 internal gas of root heat-transfer pipe is sucked out, and records 2 helium mass spectrums in helium mass spectrometer leak detector system 4 using physical data measuring system 5
The signal value of leak detector is denoted as measured value I1 and I1 ', while recording 2 temperature sensors 7, pressure sensor 8, concentrations of helium
Actual flow value Q2 ' and Q2 ＂ inside the numerical value of sensor 9 and 2 heat-transfer pipes, by Data collecting and analysis system 6, according to stream
What the 10 inside real gas uninterrupted Q2 of heat-transfer pipe and helium mass-spectrometer detecting system 4 that amount control system 3 is measured were measured
Helium content how many I1 and 2 temperature sensors 7, pressure sensor 8, concentrations of helium sensor 9 numerical value calculate leak source
The size of leakage rate.Steam generator heat-transfer pipe location technology scheme is that steam generator shell-side is filled with certain pressure and concentration
Helium, the orifice union 12 that suction gun component and tested heat-transfer pipe 10 are connected contact and makes to seal, starting flow control system
3, a suction flow is applied to tested heat-transfer pipe, after the complete transfer time tf of gas, changes flow Q1 is sucked out at once,
Gas complete transfer time is plus this flow of holding in safety time this period.It then proceedes to change and flow Q2 is sucked out, in gas
Body complete transfer time is plus this flow of holding in safety time this period.Time t1 needed for applying flow Q1, observation pair
Flow is answered to cause the variation of the helium signal value in heat-transfer pipe exit.Time t2 needed for applying flow Q2 observes corresponding flow and makes
At the variation of the helium signal value in heat-transfer pipe exit.According in different flow Q1/Q2, the difference of signal reaction time t1/t2,
Difference calculating is carried out using the equation of secondary different flow, calculates the position of leak source.
Reviewer can be used Data collecting and analysis system 6 fixed by local area network and helium mass spectrometer leak detector system 4, suction gun
Position device 1, physical data measuring system 5 are communicated, and can control helium mass spectrometer leak detector by Data collecting and analysis system 6
System 4, suction gun positioning device 1 and physical data measuring system 5 realize the acquisition and analysis of heat-transfer pipe helium mass spectrum leak detection data.
All obtained data can be all stored in storage medium to analyze for data backup and data.Inspection program can pass through
Data collecting and analysis system 6 is transferred to collecting computer so that data collector completes steam according to plan prepared in advance
The data collection task of generator heat-transfer pipe.Data analysis carries out on the computer for be equipped with Data Analysis Software, all
Initial data and analysis result all can be reserved in storage medium.
The beneficial effects of the present invention are:
1. being directed to high temperature nuclear reactor long spire coil pipe, the heat transfer tube interior gas uninterrupted measured according to flow control system
The concentrations of helium size measured with helium mass-spectrometer detecting system, can calculate the size of leak source leakage rate
2. be directed to high temperature nuclear reactor long spire coil pipe, according to starting time of flow control system, helium mass-spectrometer detecting system
The uninterrupted of response time and flow control system calculates leak source position.
3. carrying out helium mass spectrum leak detection to two heat-transfer pipes simultaneously.
4. usable Data collecting and analysis system 6 passes through local area network and helium mass spectrometer leak detector system 4, suction gun positioning device
1, physical data measuring system 5 is communicated, and can by Data collecting and analysis system 6 control helium mass spectrometer leak detector system 4,
Suction gun positioning device 1 and physical data measuring system 5 realize the acquisition and analysis of heat-transfer pipe helium mass spectrum leak detection data.
5. the relevant parameter of steam generator and heat-transfer pipe are checked that data are acquired and protect by data acquisition software
It deposits.
6. being counted to the inspection situation of all heat-transfer pipes, and by Data Analysis Software to the inspection knot of heat-transfer pipe
Fruit carries out Classification Management.
Detailed description of the invention
Fig. 1 is that steam generator heat-transfer pipe of the invention checks schematic diagram；
Fig. 2 is that helium mass spectrum leak detection system of the invention forms figure；
Fig. 3 is steam generator heat-transfer pipe helium mass spectrum check process figure of the invention.
Wherein: 1. suction gun positioning devices, 2. suction gun components, 3. flow control systems, 4. helium mass spectrometer leak detector systems, 5. objects
Manage data measurin system, 6. Data collecting and analysis systems, 7. temperature sensors, 8. pressure sensors, 9. concentrations of helium sensing
Device, 10. heat-transfer pipes, 11. evaporator water chambers, 12. orifice unions, 13. steam generator shells.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, a kind of steam generator helium mass spectrum leak detection system, including suction gun positioning device 1, suction gun group
Part 2, flow control system 3, helium mass spectrometer leak detector system 4, physical data measuring system 5, Data collecting and analysis system 6.It inhales
Rifle component 2 is mounted in suction gun positioning device 1.Suction gun positioning device 1 is mounted on evaporator water chamber 11.Flow control system 3
It is connect with suction gun component 2.Helium mass spectrometer leak detector system 4 is connect with suction gun component 2.Physical data measuring system 5 respectively with flow
Control system 3, helium mass spectrometer leak detector system 4, temperature sensor 7, pressure sensor 8, concentrations of helium sensor 9 connect.Data
Acquisition and analysis system 6 are connect with suction gun positioning device 1 and physical data measuring system 5 respectively.
Suction gun positioning device 1: it loads suction gun component 2 and is positioned, suction gun component 2 is enable to be moved in inspection program
All heat-transfer pipes below, controlled by the motion-control module in Data collecting and analysis system 6.
Suction gun component 2: being made of 2 independent inlet sleeves, 2 independent air-breathing tracheaes and 2 independent suction guns, inhales
Rifle component 2 can be mounted in suction gun positioning device 1 by fast interface.Inlet sleeve is covered each by 1 and heat-transfer pipe when inspection
10 connected 12,2 air-breathing tracheaes of orifice union are connected with 2 flow controllers in flow control system 3 respectively, 2 suctions
Rifle is connect with 2 helium mass spectrometer leak detectors in helium mass spectrometer leak detector system 4 respectively.Gas for being sucked out in heat-transfer pipe 10 is for helium
Mass-spectrometer leak detector system 4 carries out concentrations of helium analysis.
Flow control system 3: it is made of 2 flow controllers and an aspiration pump, passes through Data collecting and analysis system 6
Inspiratory flow inside Heat Transfer Control pipe 10.
Helium mass spectrometer leak detector system 4: being made of 2 helium mass spectrometer leak detectors, in the gas for analyzing the suction of suction gun component 2
The concentration of helium.The data after analysis Data collecting and analysis system 6 is transferred to by physical data measuring system 5 to remember
Record and analysis.
Physical data measuring system 5: for measuring and recording temperature sensor 7, pressure sensor 8, concentrations of helium sensing
The signal of device 9, flow controller and helium mass spectrometer leak detector, and transfer data to Data collecting and analysis system 6.
Data collecting and analysis system 6: by motion-control module, physical data acquisition module and data analysis module group
At.
A kind of steam generator Helium Leak Test, is realized using above-mentioned leak detection system, is specifically comprised the following steps:
Step 1: before formal inspection starts, confirmation steam generator shell-side leakproofness is good.
Step 2: by each subsystem/part: 1 suction gun component of suction gun positioning device, 2 flow control system, 3 helium mass spectrum leak detection
7 pressure sensor of instrument system 4 physical data measuring system, 5 Data collecting and analysis system, 6 temperature sensor, 8 concentrations of helium sensing
Device 9 is attached.Usage data collection and analysis system 6 carry out functional test to subsystems/part, and confirm each subsystem
System/part is working properly.
Step 3: temperature sensor 1 is mounted on steam generator water chamber 11, temperature sensor 2, pressure by fast interface
Force snesor, concentrations of helium sensor are mounted on steam generator shell-side by fast interface.
Step 4: suction gun positioning device 1 is mounted on steam generator water chamber 11, and carries and contains 2 sets of suction guns and air-breathing
The suction gun component 2 of sleeve, is automatically positioned, and can be reached with any one inlet sleeve guaranteed in suction gun component 2 all
12 lower section of orifice union being connected with heat-transfer pipe 10.
Step 5: 2 in suction gun component 2 inlet sleeves are made to contact formation sealing, starting with 2 throttling resistors 12 respectively
Flow control system 3, and the gas flow inside 2 heat-transfer pipes is set as Q1, so that forming negative pressure gas inside heat-transfer pipe 10
2 10 internal gas of heat-transfer pipe are sucked out respectively, the helium leaked out are transferred to heat-transfer pipe nozzle from leak source by stream, into
And the suction gun being connected on suction gun component 2 is drawn into helium mass-spectrometer detecting system 4, is remembered using physical data measuring system 5
The signal value for recording 2 helium mass spectrometer leak detectors in helium mass spectrometer leak detector system 4 is denoted as background I0 and I0 ', while recording 2 temperature
Actual flow value Q1 ' and Q1 ＂ inside sensor 7, pressure sensor 8, the numerical value of concentrations of helium sensor 9 and 2 heat-transfer pipes leads to
Data transfer that local area network records physical data measuring system 5 is crossed to Data collecting and analysis system 6.By suction gun component 2 with
The resistor 12 that throttles separates.
Step 6: steam generator shell-side is filled with to the helium of certain pressure and concentration.
Step 7: it will carry contacted containing the suction gun component 2 and 2 piece of 2 sets of suction guns and inlet sleeve throttling resistor 12 again
Sealing is formed, and starts flow control system 3, and the gas flow inside 2 heat-transfer pipes is set as Q1, respectively passes 2
10 internal gas of heat pipe is sucked out, and records 2 helium mass spectrum leak detections in helium mass spectrometer leak detector system 4 using physical data measuring system 5
The signal value of instrument is denoted as measured value I1 and I1 ', while recording 2 temperature sensors 7, pressure sensor 8, concentrations of helium sensing
Actual flow value Q2 ' and Q2 ＂ inside the numerical value of device 9 and 2 heat-transfer pipes, by Data collecting and analysis system 6, according to flow control
The helium that the 10 inside real gas uninterrupted Q2 of heat-transfer pipe and helium mass-spectrometer detecting system 4 that system 3 processed is measured are measured
Content how many I1 and 2 temperature sensors 7, pressure sensor 8, concentrations of helium sensor 9 numerical value calculate leak source leakage
The size of amount.
Step 8: after carrying out quantitative check to all heat-transfer pipes 10, confirmation heat-transfer pipe 10 is with the presence or absence of leakage, if not checking
To the heat-transfer pipe that there is leakage, then checking terminates, into the data analysis management stage.It is right if being leaked it was found that heat-transfer pipe exists
There are the heat-transfer pipes of leakage to carry out localization examination.
Step 9: suction gun component being contacted with the orifice union 12 that tested heat-transfer pipe 10 is connected and makes to seal, and starts flow
Control system 3 applies a suction flow to tested heat-transfer pipe, after the complete transfer time tf of gas, changes be sucked out at once
Flow Q1 is added in safety time this period in gas complete transfer time and is kept this flow.It then proceedes to change and stream is sucked out
Q2 is measured, is added in safety time this period in gas complete transfer time and keeps this flow.Time needed for applying flow Q1
T1 observes the variation that corresponding flow causes the helium signal value in heat-transfer pipe exit.Time t2 needed for applying flow Q2, observation pair
Flow is answered to cause the variation of the helium signal value in heat-transfer pipe exit.According in different flow Q1/Q2, signal reaction time t1/
The difference of t2 carries out difference calculating using the equation of secondary different flow, calculates the position of leak source.
Step 10: after the localization examination of all heat-transfer pipes that there is leakage, inspection data are managed, to all
Heat-transfer pipe is recorded with the presence or absence of the size and location of leakage and leak source.And generate audit report.After audit report comes into force, really
Recognizing inspection finally terminates.
Step 11: coherence check equipment is removed, and restores steam generator state.
It is explained in detail above in conjunction with implementation method of the embodiment to invention, but invention is not limited to above-mentioned implementation
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.The content that description in the present invention is not described in detail can use the prior art.
Claims (8)
1. a kind of steam generator helium mass spectrum leak detection system, it is characterised in that: it includes suction gun positioning device (1), suction gun component
(2), flow control system (3), helium mass spectrometer leak detector system (4), physical data measuring system (5), data collection and analysis system
It unites (6)；Suction gun component (2) is mounted on suction gun positioning device (1)；Suction gun positioning device (1) is mounted on evaporator water chamber (11)
On；Flow control system (3) is connect with suction gun component (2)；Helium mass spectrometer leak detector system (4) is connect with suction gun component (2)；Physics
Data measurin system (5) is passed with flow control system (3), helium mass spectrometer leak detector system (4), temperature sensor (7), pressure respectively
Sensor (8), concentrations of helium sensor (9) connection；Data collecting and analysis system (6) respectively with suction gun positioning device (1) and object
Manage data measurin system (5) connection.
2. steam generator helium mass spectrum leak detection system according to claim 1, it is characterised in that: the suction gun positions dress
It sets (1) loading suction gun component (2) to be positioned, makes suction gun component (2) that all heat-transfer pipes in inspection program can be moved to
(10) lower section, is controlled by the motion-control module in Data collecting and analysis system (6).
3. steam generator helium mass spectrum leak detection system according to claim 2, it is characterised in that: the suction gun component
(2) it is made of 2 independent inlet sleeves, 2 independent air-breathing tracheaes and 2 independent suction guns, suction gun component (2) passes through fast
Quick access mouth is mounted on suction gun positioning device (1)；Inlet sleeve is covered each by 1 throttling being connected with heat-transfer pipe (10) when inspection
Component (12), 2 air-breathing tracheaes are connected with 2 flow controllers in flow control system (3) respectively, 2 suction guns respectively with
2 helium mass spectrometer leak detectors connection in helium mass spectrometer leak detector system (4)；Gas for being sucked out in heat-transfer pipe (10) is for helium mass spectrum
Leak detector system (4) carries out concentrations of helium analysis.
4. steam generator helium mass spectrum leak detection system according to claim 3, it is characterised in that: the flow control system
System (3) is made of 2 flow controllers and an aspiration pump, passes through Data collecting and analysis system (6) Heat Transfer Control pipe (10)
Internal inspiratory flow.
5. steam generator helium mass spectrum leak detection system according to claim 4, it is characterised in that: the helium mass spectrum leak detection
Instrument system (4) is made of 2 helium mass spectrometer leak detectors, the concentration of helium in the gas for analyzing suction gun component (2) suction；Pass through
Data after analysis are transferred to Data collecting and analysis system (6) and are recorded and analyzed by physical data measuring system (5).
6. steam generator helium mass spectrum leak detection system according to claim 5, it is characterised in that: the physical data is surveyed
Amount system (5) is for measuring and recording temperature sensor (7), pressure sensor (8), concentrations of helium sensor (9), flow control
The signal of device and helium mass spectrometer leak detector, and transfer data to Data collecting and analysis system (6).
7. steam generator helium mass spectrum leak detection system according to claim 6, it is characterised in that: the described data acquisition and
Analysis system (6) is made of motion-control module, physical data acquisition module and data analysis module.
8. a kind of steam generator Helium Leak Test, is realized using leak detection system according to claim 1, specific to wrap
Include following steps:
Step 1: before formal inspection starts, confirmation steam generator shell-side leakproofness is good；
Step 2: by each subsystem/part: suction gun positioning device (1), suction gun component (2), flow control system (3), helium mass spectrum
Leak detector system (4), physical data measuring system (5), Data collecting and analysis system (6), temperature sensor (7), pressure pass
Sensor (8), concentrations of helium sensor (9) are attached；Usage data collection and analysis system (6) are to subsystems/part
Functional test is carried out, and confirms that each subsystem/part is working properly；
Step 3: temperature sensor (1) is mounted on steam generator water chamber (11) by fast interface, temperature sensor (7),
Pressure sensor (8), concentrations of helium sensor (9) are mounted on steam generator shell-side by fast interface；
Step 4: suction gun positioning device (1) is mounted on steam generator water chamber (11), and is carried and contained 2 sets of suction guns and air-breathing
The suction gun component (2) of sleeve, is automatically positioned, to guarantee that any one inlet sleeve in suction gun component (2) can reach
Below all orifice unions (12) being connected with heat-transfer pipe (10)；
Step 5: 2 inlet sleeves in suction gun component (2) are made to contact formation sealing, starting with 2 throttling resistors (12) respectively
Flow control system (3), and the internal gas flow of 2 heat-transfer pipes (10) is set as Q1, so that the internal shape of heat-transfer pipe (10)
At negative pressure gas flow, 2 heat-transfer pipe (10) internal gas are sucked out respectively, the helium leaked out is transferred to heat transfer from leak source
Pipe nozzle, and then the suction gun being connected on suction gun component (2) is drawn into helium mass-spectrometer detecting system (4), uses physics number
According to measuring system (5) record helium mass spectrometer leak detector system (4) in 2 helium mass spectrometer leak detectors signal value, be denoted as background I0 and
I0 ', while recording 2 temperature sensors (7), pressure sensor (8), the numerical value of concentrations of helium sensor (9) and 2 heat-transfer pipes
(10) internal actual flow value Q1 ' and Q1 ＂, is given the data transfer that physical data measuring system (5) records by local area network
Data collecting and analysis system (6)；Suction gun component (2) and throttling resistor (12) are separated；
Step 6: steam generator shell-side is filled with helium；
Step 7: the suction gun component (2) containing 2 sets of suction guns and inlet sleeve will be carried again and is contacted with 2 throttling resistors (12)
Sealing is formed, and starts flow control system (3), and the internal gas flow of 2 heat-transfer pipes (10) is set as Q1, respectively will
2 heat-transfer pipe (10) internal gas are sucked out, and use 2 in physical data measuring system (5) record helium mass spectrometer leak detector system (4)
The signal value of helium mass spectrometer leak detector is denoted as measured value I1 and I1 ', while recording 2 temperature sensors (7), pressure sensors
(8), actual flow value Q2 ' and the Q2 ＂ of the numerical value of concentrations of helium sensor (9) and 2 heat-transfer pipe (10) inside, is adopted by data
Collection and analysis system (6), the internal real gas uninterrupted Q2 of the heat-transfer pipe (10) measured according to flow control system (3) and
Helium content how many I1 that helium mass-spectrometer detecting system (4) is measured and 2 temperature sensors (7), pressure sensor (8),
The numerical value of concentrations of helium sensor (9) calculates the size of leak source leakage rate；
Step 8: after carrying out quantitative check to all heat-transfer pipes (10), confirmation heat-transfer pipe (10) is with the presence or absence of leakage, if not checking
To the heat-transfer pipe (10) that there is leakage, then checking terminates, into the data analysis management stage；If being leaked it was found that heat-transfer pipe exists,
Localization examination then is carried out to the heat-transfer pipe that there is leakage；
Step 9: suction gun component being contacted with the orifice union (12) that tested heat-transfer pipe (10) are connected and makes to seal, and starts flow
Control system (3) applies a suction flow to tested heat-transfer pipe (10) and changes at once after the complete transfer time tf of gas
Become and flow Q1 is sucked out, is added in safety time this period in gas complete transfer time and keep this flow；It then proceedes to change
Flow Q2 is sucked out, is added in safety time this period in gas complete transfer time and keeps this flow；Apply needed for flow Q1
Time t1, observe the variation that corresponding flow causes the helium signal value in heat-transfer pipe exit；Time t2 needed for applying flow Q2,
Observe the variation that corresponding flow causes the helium signal value in heat-transfer pipe exit；According in different flow Q1/Q2, when signal reaction
Between t1/t2 difference, using secondary different flow equation carry out difference calculating, calculate the position of leak source；
Step 10: after the localization examination of all heat-transfer pipes (10) that there is leakage, inspection data are managed, to all
Heat-transfer pipe (10) is recorded with the presence or absence of the size and location of leakage and leak source；And generate audit report；Audit report comes into force
Afterwards, confirmation checks and finally terminates；
Step 11: coherence check equipment is removed, and restores steam generator state.
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| CN113063551A (en) * | 2021-04-14 | 2021-07-02 | 建投邢台热电有限责任公司 | Device and method for judging quantity of leakage pipe bundles of heat pipe type low-temperature economizer |
| CN113390580A (en) * | 2021-07-10 | 2021-09-14 | 湖南华菱湘钢节能发电有限公司 | Condenser vacuum on-line quick leak detection method |
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| CN114076660A (en) * | 2020-08-19 | 2022-02-22 | 国核电站运行服务技术有限公司 | Positioning and detecting device and method for pipeline leakage point in closed space |
| CN114295299A (en) * | 2021-11-19 | 2022-04-08 | 华能核能技术研究院有限公司 | Method for monitoring spiral heat transfer pipe of steam generator of high-temperature gas cooled reactor |
| CN114878107A (en) * | 2022-06-08 | 2022-08-09 | 华能国际电力股份有限公司德州电厂 | Automatic leakage detection device and method for air exhaust of heat exchange tube of condenser |
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| CN114295299A (en) * | 2021-11-19 | 2022-04-08 | 华能核能技术研究院有限公司 | Method for monitoring spiral heat transfer pipe of steam generator of high-temperature gas cooled reactor |
| CN114295299B (en) * | 2021-11-19 | 2023-08-04 | 华能核能技术研究院有限公司 | Method for monitoring spiral heat transfer tube of high-temperature gas cooled reactor steam generator |
| CN114878107A (en) * | 2022-06-08 | 2022-08-09 | 华能国际电力股份有限公司德州电厂 | Automatic leakage detection device and method for air exhaust of heat exchange tube of condenser |
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Application publication date: 20190308 |