CN207197744U - A kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone - Google Patents
A kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone Download PDFInfo
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- CN207197744U CN207197744U CN201721169749.4U CN201721169749U CN207197744U CN 207197744 U CN207197744 U CN 207197744U CN 201721169749 U CN201721169749 U CN 201721169749U CN 207197744 U CN207197744 U CN 207197744U
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Abstract
It the utility model is related to a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone,The pond includes coagulation soil matrix pond,It is laid on the stainless steel plate group of the coagulation soil matrix pond inner surface,The stainless steel plate group includes polylith stainless-steel sheet,By being weldingly connected between per two pieces of adjacent stainless-steel sheets,The stainless-steel sheet and weld metal zone collectively form the stainless steel clad can positioned at the coagulation soil matrix pond inner surface,The helium leak detection device includes the vacuum (-tight) housing with opening,The air extractor being connected with the vacuum (-tight) housing by pipeline,Filling into the tie point of gas between the vacuum (-tight) housing and the air extractor,The second branch road between the tie point and the air extractor,Second branch road is provided with mass spectrograph,After above technical scheme,Stainless steel clad can before easily being on active service to nuclear power generating sets checks,Find pond stainless steel steel linear leak source in nuclear power control zone,Detection efficient is high.
Description
Technical field
The utility model is related to technical field of nondestructive testing, and in particular to one kind be used for nuclear power generating sets control zone in pond not
The helium leak detection device of rust steel linear.
Background technology
Helium leakage detection due to high sensitivity, it is easy to use, on environment without influence the features such as, in nuclear power plant, petrochemical industry, thermoelectricity
Extensive use in the numerous areas such as factory, steel factory, aviation.Helium leakage detection is that the method that helium ion concentration is detected by helium mass analyzer is entered
Row measurement, helium mass analyzer becomes the helium of different quality under high vacuum working environment by its critical piece mass spectrum chamber
Ion, ion are moved in electromagnetic field and deflected, so that the ion of different quality is separated from each other, and the ion of homogenous quantities exists
Got together in electromagnetic field.A baffle plate for leaving slit is provided with mass spectrum chamber, only makes helium ion stream by and by receiving, and then
The change of helium concentration can be detected.
The large scale equipment of nuclear power station such as generator, steam generator, condenser etc. are all searched using the method for helium leakage detection and set
Standby leak source.Helium leakage detection is divided into two kinds of suction gun method and vacuum method, is all that detection concentrations of helium exceedes background concentration as leak source foundation
Principle.
Suction gun method is that the helium of certain pressure is filled with inside detected pieces, is then explored with suction gun in container exterior.
When small opening on chamber wall be present, helium is outwards escaped by small opening.When suction gun face small opening position, helium is empty in company with surrounding
Gas sucks mass spectrum chamber by suction gun together and produces gas leakage instruction, so as to find and position leakage point.
Vacuum method is to be connected detected pieces with helium mass analyzer, and certain vacuum will be taken out inside measured piece by fore pump, is surveyed
After measuring detected pieces helium background, high-purity helium is sprayed onto by the doubtful leakage point of detected pieces by spray gun, passes through the change of mass spectrograph registration
Carry out leak point positioning and slip calculates.When helium is sprayed on leakage point position, helium enters quilt together in company with surrounding air
Part is examined, gas leakage instruction is produced hence into mass spectrum chamber.
The pond such as reactor pit, Spent Fuel Pool in nuclear power generating sets control zone, transmission pond, tinning pond using concrete as
Basis is simultaneously equipped with stainless steel clad can in concrete surface, so as to prevent active water from penetrating into concrete.Its
In, stainless steel clad can is welded by polylith stainless-steel sheet, so as to form weld metal zone between steel plate and steel plate.Day-to-day operation
Or during reloading, pond is full of radioactivity of the water to cool down heat caused by spentnuclear fuel, shield irradiated fuel assembly.If pond
There is penetrating crack in stainless-steel sheet surface or weld metal zone, and drainage occurs in pond, pollution can be caused to leak, radioactivity not
The safety problems such as controllable, irradiated fuel assembly cooling deficiency.
Due to the special construction in pond in nuclear power control zone, the space between stainless steel clad can and concrete can not be used
Existing conventional mode carries out pressurising or vacuumized.Stainless steel clad can underlying space pressure-bearing, pressure-bearing direction can be caused too much by filling helium
With during operation in pond full water on the contrary, easily cause the bulge of stainless steel clad can, weld seam breakage etc. destroy；Stainless steel clad can and coagulation
Space between soil is larger, and concrete locally lies in micro gap, and vacuum can not keep stable, not reach mass spectrograph mass spectrum chamber
Condition of work.Therefore, helium leakage detection conventional " suction gun method " and " vacuum method " can not be implemented on this class formation.In addition, adopt
When carrying out helium leakage detection with traditional mass spectrograph, suction gun and the contact area on surface to be measured are small, and the sweep speed of suction gun is very slow, helium
Leakage detection efficiency is very low.
The content of the invention
The utility model provides a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone, so as to
Overcome in the prior art that stainless steel clad can is unable between reverse pressure-bearing, stainless steel clad can and concrete in nuclear power generating sets control zone
Space can not vacuumize, helium leakage detection when need detected pieces both sides the contradiction of pressure difference to be present, realize in nuclear power generating sets control zone Nei Shui
The helium leakage detection of pond stainless steel clad can, the defects of detecting stainless steel clad can, detection efficient is high, so that it is guaranteed that pond is abnormal without water clock,
Ensure that radioactivity does not leak.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：One kind is used for nuclear power generating sets control zone Nei Shui
The helium leak detection device of pond stainless steel clad can, wherein, the pond includes coagulation soil matrix pond, is laid on table in the coagulation soil matrix pond
The stainless steel plate group in face, the stainless steel plate group include polylith stainless-steel sheet, per two pieces of adjacent stainless-steel sheets it
Between by being weldingly connected, the stainless-steel sheet and weld metal zone are collectively formed positioned at the stainless of the coagulation soil matrix pond inner surface
Steel linear, the helium leak detection device include with opening vacuum (-tight) housing, be connected with the vacuum (-tight) housing by pipeline air extractor,
Between the vacuum (-tight) housing and the air extractor to fill into the tie point of gas, located at the tie point with it is described
The second branch road between air extractor, second branch road are provided with mass spectrograph, and the helium leak detection device is also included to control
The valve member of each pipeline opening and closing, when carrying out helium leakage detection, the opening plaster of the vacuum (-tight) housing is together in the surface of steel plate.
Further, the pipeline between the vacuum (-tight) housing and second branch road is provided with the first valve, described first
On the pipeline between first valve and the vacuum (-tight) housing, the tie point is connected with air on road, and described first
Branch road is provided with the second valve.
Further, the pipeline between first valve and second branch road is provided with the first filter.
Further, first filter includes the rough filtering device set gradually along pumping direction and papery fine filtering dress
Put.
Further, second branch road includes the 3rd valve, the decompressor and described being sequentially connected by pipeline
Mass spectrograph.
Further, the second filter, second filtering are provided between the 3rd valve and the decompressor
Device is metal filtering core fine filtering device.
Further, the air extractor is vavuum pump, and the exhaust end of the vavuum pump is located to be born with what the external world was isolated
Press workspace.
Further, the vacuum (-tight) housing includes cover body, and the inside of the cover body is cavity, and the cavity is with being located at institute
The opening in communication of the side end face of cover body one is stated, the cover body face relative with the opening is provided with and the cavity
The interface communicated, the edge of the opening are provided with groove, flexible sealing strip are provided with the groove.
Further, the vacuum (-tight) housing is rectangular shape, and the vacuum (-tight) housing, which is provided with, is easy to hand-held handle, described true
The length of sky cover is 300-800mm, width 200-600mm, is highly 55-150mm, the thickness of the vacuum (-tight) housing is 35-
50mm, the length of the opening is 200-730mm, width 100-530mm.
Further, the vacuum (-tight) housing uses stainless steel or aluminum alloy material.
After above technical scheme, can effectively overcome in the prior art stainless steel clad can be unable to reverse pressure-bearing, accommodate
Space can not vacuumize, helium leakage detection needs detected pieces both sides the contradictions such as pressure difference to be present, before being easily on active service to nuclear power generating sets
Stainless-steel sheet surface and weld metal zone are checked, find pond stainless-steel sheet surface and weld metal zone leakage in nuclear power control zone
Point, detection efficient is high, so as to prior involvement, eliminates pond stainless steel clad can leakage hidden danger, prevents radioactivity from leaking.
Brief description of the drawings
The structural representation in pond clad stainless steel face in the utility model of accompanying drawing 1；
Accompanying drawing 2 is the structural representation for drawing bakie in the utility model；
Accompanying drawing 3 is the structural representation of helium charging unit in the utility model；
Accompanying drawing 4 is the structural representation of helium leak detection device of the present utility model；
Accompanying drawing 5 is the structural representation of vacuum (-tight) housing in the utility model；
Accompanying drawing 6 is the sectional view of vacuum (-tight) housing in the utility model；
Accompanying drawing 7 is the top view of vacuum (-tight) housing in the utility model；
Accompanying drawing 8 is the structural representation of cone-shaped hood leak detection device in the utility model.
Wherein, 1, stainless steel clad can；101st, steel plate；102nd, weld metal zone；2nd, concrete；3rd, receiving space；4th, channel-section steel；5th, draw
Bakie；6th, helium tank；7th, pressure-reducing valve；8th, the 4th valve；9th, surge tank；10th, the 5th valve；11st, second pressure gauge；12nd, vacuum
Cover；1201st, cover body；1202nd, it is open；1203rd, cavity；1204th, interface；1205th, flexible sealing strip；1206th, handle；13rd,
One valve；14th, vavuum pump；15th, tie point；16th, the second valve；17th, the second branch road；18th, the 3rd valve；19th, decompressor；
20th, mass spectrograph；21st, first pressure table；22nd, rough filtering device；23rd, papery fine filtering device；24th, metal filtering core fine filtering device；25th, bear
Press workspace；26th, cone-shaped hood；27th, suction pipe；28th, fore pump.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of pond in nuclear power generating sets control zone, the pond includes coagulation soil matrix pond 2
And the stainless steel plate group of the inner surface of coagulation soil matrix pond 2 is laid on, the stainless steel plate group includes polylith stainless-steel sheet 101,
By being weldingly connected between per adjacent stainless-steel sheet 101, stainless-steel sheet 101 and weld metal zone 102 collectively form and are located at
The stainless steel clad can 1 of the inner surface of coagulation soil matrix pond 2, the approximate closed receiving of formation between stainless steel clad can 1 and coagulation soil matrix pond 2
Space 3, the bottom in coagulation soil matrix pond 2 are provided with the outlet for being connected to receiving space 3, support have been provided with below weld metal zone 102
With the channel-section steel 4 of fixation, it is respectively equipped with the both sides of channel-section steel 4 and draws bakie 5, the bakie 5 that draws of each pool wall is interconnected.Root
According to the size of pond wall, pool wall of pool, which is separately provided, draws bakie 5 or several faces are aggregated into one and draw bakie 5, will draw bakie 5 and draws
To the outlet for being located at the bottom of receiving space 3, the drain cap that leak is led to below outlet, during unit day-to-day operation,
By observing whether leak-off connection drips to judge that pond whether there is defect.
Before helium leakage detection need that receiving space 3 is carried out to fill helium, as shown in figure 3, helium charging unit is included by pipeline successively
Helium tank 6, pressure-reducing valve 7, the 4th valve 8, the valve 10 of surge tank 9 and the 5th of connection, the 5th valve 10 draw with receiving space 3
Outlet is connected, and second pressure gauge 11 is connected with surge tank 9.By increasing surge tank 9, can not only realize to receiving space 3
Middle level pressure, helium is quantitatively filled, and the pressure in receiving space 3 can be monitored at any time, avoid the receiving of the lower section of stainless steel clad can 1 empty
Between superpressure in 3.
A kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone, as shown in Figures 4 to 7, bag
Include vacuum (-tight) housing 12, vacuum (-tight) housing includes cover body 1201, and the inside of cover body 1201 is cavity 1203, the side end face of cover body 1,201 1
With opening 1202, cavity 1203 is connected with opening 1202, and the face relative with opening 1202 of cover body 1201 is provided with and sky
The interface 1204 that chamber 1203 communicates, for interface 1204 to connecting pipe, 1202 edge of being open is provided with groove, is provided with groove
Flexible sealing strip 1205, so that opening 1202 can be tightly bonded with by the surface of stainless steel clad can 1, play a part of sealing.
Interface 1204 is using the KF interfaces standardized, so as to quickly be connected or dismantle with pipeline.
Preferably, vacuum (-tight) housing is rectangular shape, and the length of vacuum (-tight) housing is 300-800mm, width 200-600mm, high
Spend for 55-150mm, the thickness of vacuum (-tight) housing is 35-50mm, and 1202 length of being open is 200-730mm, width 100-530mm.
For ease of portable, vacuum (-tight) housing is provided with one or more handles 1206.The vacuum (-tight) housing uses stainless steel or aluminium alloy
Material.
Vacuum (-tight) housing 12 is connected with the first valve 13 and vavuum pump 14 successively by pipeline, the first valve 13 and vacuum (-tight) housing 12
Between be provided with the tie point 15 that is connected with air, tie point 15 is provided with the second valve 16, by the second valve 16 of opening,
Air can be made to enter pipeline, the second branch road 17 is provided between the first valve 13 and vavuum pump 14, is sequentially provided with the second branch road 17
The 3rd valve 18, decompressor 19 and the mass spectrograph 20 being connected by pipeline.
For ease of determining the internal pressure of vacuum (-tight) housing 12, vacuum (-tight) housing 12 is provided with to show the of the air pressure inside of vacuum (-tight) housing 12
One pressure gauge 21.It is connected with rough filtering device 22 and papery fine filtering device 23 between the branch road 17 of vacuum (-tight) housing 12 and second in turn, the 3rd
Metal filtering core fine filtering device 24 is provided between valve 18 and decompressor 19, can be to prevent by setting above-mentioned multiple filters
Only chip enters mass spectrograph 20 or vacuum (-tight) housing 12.
Vavuum pump 14 and the discharge duct being connected with vavuum pump 14 are located at negative pressure workspace 25, so as to by vavuum pump
14 gases extracted are discharged into the negative pressure workspace 25, prevent from polluting working region.
Because stainless steel clad can 1 is an entirety being welded by polylith stainless-steel sheet 101, and stainless steel linear 1
It can not be fully sealed between concrete 2, and because helium diffusivity itself is stronger so that helium can be in clad stainless steel
Diffused out in micro gap between face 1 and concrete 2.The held beneath space 3 of stainless steel clad can 1 is filled using helium charging unit
After helium, concentrations of helium detection can be carried out at the micro gap that stainless steel clad can 1 contacts with concrete 2.If the registration of mass spectrograph 20
There is data level change, it was demonstrated that the underlying space of stainless steel clad can 1 has been filled with helium；If the registration of mass spectrograph 20 increases without growth or slowly
It is long, then prove to fill helium lazy weight, need to adjust and fill helium quantity and verified again, until there is order of magnitude change.
The helium leakage detection key step of stainless steel clad can 1：
（1）Consult pond stainless steel clad can 1 and draw bakie 5 and arrange, estimate the volume of receiving space 3 and fill helium quantity, it is ensured that
Helium concentration can reach 50% in receiving space 3 during helium leakage detection.
（2）As shown in figure 3, filling helium quantity according to estimation, carry out level pressure to drawing the space of bakie 5 using helium charging unit, determine
Amount fills helium：The 4th valve 8 and the 5th valve 10 are first shut off, the outlet pressure of pressure-reducing valve 7 is adjusted to setting value, then opens the 4th
Valve 8, the 4th valve 8 is closed after the pressure stability of tank 9 to be buffered, and open the 5th valve 10 and helium is charged to receiving space 3, it
The 5th valve 10 is closed afterwards, then opening the 4th valve 8 makes helium re-fill surge tank 9, repeats aforesaid operations until the appearance
The concentrations of helium received in space 3 reaches requirement.
（3）Helium spilling has been detected whether at the top of stainless steel clad can 1 with the composition surface of concrete 2, has observed mass spectrograph 20
Registration changes, it is ensured that helium is full of whole receiving space 3.
（4）As shown in figure 4, helium leakage detection is carried out to stainless steel surfaces using helium leak detection device：By the opening of vacuum (-tight) housing 12
1202 fit in the surface of steel plate 101, close the second valve 16 and the 3rd valve 18, open the first valve 13, use vavuum pump 14
Vacuum (-tight) housing 12 is evacuated, when being extracted into setting value, the second valve 16 is opened and is located at suitable aperture, keep vavuum pump 14
It is constant that pumping makes the air pressure in vacuum (-tight) housing 12 maintain certain atmospheric pressure value, opens the 3rd valve 18.
（5）Micro helium, test system response time are launched at vacuum (-tight) housing 12.
（6）The surface defect of steel plate 101 is judged by the change of the registration of mass spectrograph 20, Mobile vacuum cover 12 is successively to steel plate 101
Surface carries out helium leakage detection, when needing vacuum (-tight) housing 12 being moved to the next position, is first shut off the 3rd valve 18, then tune up second
The aperture of valve 16, the air pressure in vacuum (-tight) housing 12 is set to increase to atmospheric pressure, so that the opening 1202 of vacuum (-tight) housing 12 and steel plate 101
Surface departs from.
Preferably, further more accurately to carry out helium leakage detection to weld metal zone 102, helium leak detection device of the present utility model is also
Including the cone-shaped hood leak detection device for being detected to weld metal zone 102.
As shown in figure 8, cone-shaped hood leak detection device includes cone-shaped hood 26, cone-shaped hood 26 has can be mutually smooth with weld metal zone 102
Opening surface, the afterbody of cone-shaped hood 26 is provided with connector, and connector passes sequentially through suction pipe 27 and fore pump 28 and the phase of mass spectrograph 20
Even, fore pump 28 is detected the gas extraction in cone-shaped hood 26 to mass spectrograph 20.The inside of cone-shaped hood 26 has with outside
Small pressure difference, sensitivity is improved so as to gather helium.
The helium leakage detection key step of weld metal zone 102：
（1）Consult pond stainless steel clad can 1 and draw bakie 5 and arrange, estimate the volume of receiving space 3 and fill helium quantity, it is ensured that
Helium concentration can reach 50% in receiving space 3 during helium leakage detection.
（2）As shown in figure 3, filling helium quantity according to estimation, carry out level pressure to drawing the space of bakie 5 using helium charging unit, determine
Amount fills helium：The 4th valve 8 and the 5th valve 10 are first shut off, the outlet pressure of pressure-reducing valve 7 is adjusted to setting value, then opens the 4th
Valve 8, the 4th valve 8 is closed after the pressure stability of tank 9 to be buffered, and open the 5th valve 10 and helium is charged to receiving space 3, it
The 5th valve 10 is closed afterwards, then opening the 4th valve 8 makes helium re-fill surge tank 9, repeats aforesaid operations until the appearance
The concentrations of helium received in space 3 reaches requirement.
（3）Helium spilling has been detected whether at the top of stainless steel clad can 1 with the composition surface of concrete 2, has observed mass spectrograph 20
Registration changes, it is ensured that helium is full of whole receiving space 3.
（4）As shown in figure 8, helium leakage detection is carried out to weld metal zone 102 using cone-shaped hood leak detection device：By the opening of cone-shaped hood 26
Face fits in the surface of weld metal zone 102, the center face weld metal zone 102 of cone-shaped hood 26, and fore pump 28 is by the gas in cone-shaped hood 26
Extract to mass spectrograph 20.
（5）Micro helium, test system response time are launched at cone-shaped hood 26.
（6）The surface defect of steel plate 101 is judged by the change of the registration of mass spectrograph 20, slides cone-shaped hood 26 successively to weld metal zone
102 surfaces carry out helium leakage detection.
Helium leakage detection, easy to operate, efficiency high are carried out to stainless steel clad can 1 using helium leak detection device of the present utility model.By
It is larger in the volume of vacuum (-tight) housing 12, thus made during helium leakage detection using vavuum pump 14 and valve member cooperation in vacuum (-tight) housing 12
Remain constant pressure, it is ensured that the registration of mass spectrograph 20 is stable；During helium leakage detection, the pressure inside vacuum (-tight) housing 12 is less than air
Pressure, its opening 1202 under atmospheric pressure effect of vacuum (-tight) housing 12 can be brought into close contact in the surface of steel plate 101；Further, since mass spectrum
The detection pressure of instrument 20 is very low, thus sets decompressor 19 to make the gas pressure into mass spectrograph 20 before mass spectrograph 20
Meet the testing requirements of mass spectrograph 20.And the small volume of cone-shaped hood 26, and the diameter of suction pipe 27 is very small, thus enter mass spectrograph
20 gas pressure very little, therefore without still further arranging decompressor 19；In the presence of fore pump 28, the inside of cone-shaped hood 26
There is small pressure difference with outside, sensitivity is improved so as to gather helium.
After above technical scheme, in that context it may be convenient to pond stainless-steel sheet 101 and weldering before being on active service to nuclear power generating sets
Seam area 102 is checked, finds the leak source of pond stainless steel clad can 1 in nuclear power control zone, and so as to prior involvement, it is stainless to eliminate pond
Steel linear 1 leaks hidden danger, prevents radioactivity from leaking.
For above-described embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, the scope of protection of the utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover the scope of protection of the utility model it
It is interior.
Claims (10)
1. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone, wherein, the pond includes mixed
Solidifying soil matrix pond, the stainless steel plate group for being laid on the coagulation soil matrix pond inner surface, the stainless steel plate group include polylith stainless steel
Steel plate, often by being weldingly connected between two pieces of adjacent stainless-steel sheets, the stainless-steel sheet and weld metal zone are common
Form the stainless steel clad can positioned at the coagulation soil matrix pond inner surface, it is characterised in that：The helium leak detection device, which includes having, to be opened
Mouthful vacuum (-tight) housing, be connected with the vacuum (-tight) housing by pipeline air extractor, located at the vacuum (-tight) housing and the air extractor it
Between to fill into the tie point of gas, the second branch road between the tie point and the air extractor, described
Two branch roads are provided with mass spectrograph, and the helium leak detection device also includes, to control the valve member of each pipeline opening and closing, carrying out helium
During leakage detection, the opening plaster of the vacuum (-tight) housing is together in the surface of steel plate.
2. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 1,
It is characterized in that：Pipeline between the vacuum (-tight) housing and second branch road is provided with the first valve, and the tie point is located at
On pipeline between first valve and the vacuum (-tight) housing, the tie point is connected with air, in the tie point
Provided with the second valve.
3. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 2,
It is characterized in that：Pipeline between first valve and second branch road is provided with the first filter.
4. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 3,
It is characterized in that：First filter includes the rough filtering device and papery fine filtering device set gradually along pumping direction.
5. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 1,
It is characterized in that：Second branch road includes the 3rd valve, decompressor and the mass spectrograph being sequentially connected by pipeline.
6. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 5,
It is characterized in that：The second filter is provided between 3rd valve and the decompressor, second filter is
Metal filtering core fine filtering device.
7. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 1,
It is characterized in that：The air extractor is vavuum pump, and the exhaust end of the vavuum pump is located at the negative pressure being isolated with the external world and worked
Area.
8. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 1,
It is characterized in that：The vacuum (-tight) housing includes cover body, and the inside of the cover body is cavity, and the cavity located at described with covering this
The opening in communication of the side end face of body one, the cover body face relative with the opening are provided with what is communicated with the cavity
Interface, the edge of the opening are provided with groove, flexible sealing strip are provided with the groove.
9. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 1,
It is characterized in that：The vacuum (-tight) housing is rectangular shape, and the vacuum (-tight) housing, which is provided with, is easy to hand-held handle, the vacuum (-tight) housing
Length is 300-800mm, width 200-600mm, is highly 55-150mm, and the thickness of the vacuum (-tight) housing is 35-50mm, described
The length of opening is 200-730mm, width 100-530mm.
10. a kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone according to claim 1,
It is characterized in that：The vacuum (-tight) housing uses stainless steel or aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169749.4U CN207197744U (en) | 2017-09-13 | 2017-09-13 | A kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169749.4U CN207197744U (en) | 2017-09-13 | 2017-09-13 | A kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone |
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| Publication Number | Publication Date |
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| CN207197744U true CN207197744U (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721169749.4U Expired - Fee Related CN207197744U (en) | 2017-09-13 | 2017-09-13 | A kind of helium leak detection device for pond stainless steel clad can in nuclear power generating sets control zone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871689A (en) * | 2018-07-06 | 2018-11-23 | 中广核检测技术有限公司 | A kind of high sensitivity vacuum leak detector |
| CN110853785A (en) * | 2019-11-20 | 2020-02-28 | 苏州热工研究院有限公司 | Method for analyzing output capacity fault of nuclear power pressurized water reactor unit |
| CN111564229A (en) * | 2020-04-01 | 2020-08-21 | 中广核工程有限公司 | Leakage detection method for steel cladding of nuclear power station pool |
-
2017
- 2017-09-13 CN CN201721169749.4U patent/CN207197744U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871689A (en) * | 2018-07-06 | 2018-11-23 | 中广核检测技术有限公司 | A kind of high sensitivity vacuum leak detector |
| CN110853785A (en) * | 2019-11-20 | 2020-02-28 | 苏州热工研究院有限公司 | Method for analyzing output capacity fault of nuclear power pressurized water reactor unit |
| CN110853785B (en) * | 2019-11-20 | 2021-08-17 | 苏州热工研究院有限公司 | Method for analyzing output capacity fault of nuclear power pressurized water reactor unit |
| CN111564229A (en) * | 2020-04-01 | 2020-08-21 | 中广核工程有限公司 | Leakage detection method for steel cladding of nuclear power station pool |
| CN111564229B (en) * | 2020-04-01 | 2023-11-24 | 中广核工程有限公司 | Leakage detection method for nuclear power station pool steel cladding |
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