CN203490043U - Special leak rate test container for vacuum leak detection standard test block - Google Patents
Special leak rate test container for vacuum leak detection standard test block Download PDFInfo
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- CN203490043U CN203490043U CN201320553760.6U CN201320553760U CN203490043U CN 203490043 U CN203490043 U CN 203490043U CN 201320553760 U CN201320553760 U CN 201320553760U CN 203490043 U CN203490043 U CN 203490043U
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Abstract
The utility model relates to a special leak rate test container for a vacuum leak detection standard test block. The special leak rate test container comprises a box body and a cover body arranged on the box body, wherein a sealing rubber pad is arranged between the box body and the cover body, and the box body and the cover body can be hermetically closed; and a standard fixing element and an air passage are arranged on the side face of the box body. The special leak rate test container provided by the utility model is used for solving the problem that an existing sensitivity calibrator of a nondestructive vacuum leak detection standard test block in nuclear power station construction does not meet the RCC-M standard requirements, compensating and innovating the process method and calibration apparatus of the leak rate test technology of the vacuum leak detection standard test block in the nondestructive testing field and achieving the zero breakthrough of the leak rate test technology of the vacuum leak detection standard test block, thereby providing equipment basis for design and research of novel process method of leak rate test.
Description
Technical field
The utility model relates to the leak rate test special container of a kind of vacuum leak examination criteria test block, belongs to technical field of nondestructive testing.
Background technology
Current, according to the applicant understood, vacuum leak detection technique is nuclear equipment design, construction, development and very important a kind of nondestructiving detecting means in service.Domestic each is in to be built and operating nuclear power station, so long as while applying to Non-Destructive Testing leak check (vacuum (-tight) housing bubble method) method, no matter be during construction phase, preservice inspection and the inservice inspection of nuclear power station, each unit that is engaged in Non-Destructive Testing work is all being used " reference block of nuclear industry vacuum leak detection check HWB type ".The Main Function of this reference block is before Leak Detection work is carried out, known reference block small opening is vacuumized, by observing the bubble of known small opening place formation, show, verify after the sensitivity and validity with verification leak detection system and foam liquid, then by this leak detection system for actual Leak Detection work.Because the manufacturer of vacuum leak reference block has only provided the aperture (0.05～0.15mm) of artificial small opening, the actual leak rate of different pore size small opening is not demarcated to test, and in RCC-M standard and B.T.S technical specification book, the leak detection sensitivity of prescribed inhale chamber (being vacuum (-tight) housing) needs to reach 10
-5pam
3/ s, through preliminary test comparison, determines that the leak rate of minimum-value aperture (0.05mm) in the test block of vacuum leak examination criteria is greater than the setting in standard, thereby also shows that the reference block of used HWB type Leak Detection does not meet the leak rate requirement in RCC-M standard.The external control inspection units such as this problem Shi You State Bureau of Nuclear Safety, in the quality guarantee Survey Operations of carrying out at the scene, propose, in view of there is no so far, can make research and the unit and the mechanism that solve to this problem both at home and abroad, for solving as early as possible this difficult problem, the more influential in-service testing agency of Now Domestic and nuclear power are built unit, also this problem have been caused to higher attention.In order to guarantee accuracy and the reliability of weld joint vacuum leak check result and data in the construction of nuclear power station and operational process, also can meet the requirement of standard a nd norm simultaneously, the referance leak that just must use vacuum leak check carries out actual leak rate mensuration, and whether effective detection sensitivity of the vacuum leak detecting system while determining actual welds check with this meets the requirement that meets standard criterion.
Utility model content
The technical problems to be solved in the utility model is: propose a kind of container that can test the actual leak rate of 0.05mm aperture reference block.
The utility model is that the technical scheme that solves the problems of the technologies described above proposition is: the leak rate test special container of a kind of vacuum leak examination criteria test block, and comprise casing and be located at the lid on described casing, between described casing and lid, be provided with sealing rubber pad; It is characterized in that: described casing side is provided with standard mount and air flue.
The utility model further improves and is:
1. described in, casing and lid are hinged; Described lid and casing surrounding are provided with fastening ear in correspondence with each other, by the fastening effect of the bolt through described fastening ear, the salable closure of described lid and casing.
2. described in, lid is provided with tensimeter, and described bottom half is provided with support.
3. described in, fixture is ring flange.
4. the corrosion resistant plate that described in, casing and lid are more than or equal to 6mm by thickness is made.
The beneficial effect that the utility model brings is: the leak rate test special container of vacuum leak examination criteria of the present utility model test block, both be suitable for reference block helium mass analyzer leak rate method of testing, and be suitable for again using referance leak checking vacuum (-tight) housing to detect leak rate sensitivity test method; Solved the difficult problem that current construction of nuclear power station Non-Destructive Testing vacuum leak reference block sensitivity check does not meet RCC-M master gauge provisioning request, made up the deficiency that field of non destructive testing vacuum leak detection method is used comparison test block to limit to, verified the system check sensitivity of vacuum leak bubble detecting method, for vacuum (-tight) housing bubble detecting method, can find that the foaming phenomenon of more tiny (being less than 0.05mm aperture) penetrability defect provides good evidence.Meanwhile, also effectively verify and got rid of in the current construction of nuclear power station and operational process in nuclear equipment weld seam, to exist while being less than reference block 0.05mm aperture defects the hidden danger that can not effectively detect by vacuum (-tight) housing leak detecting; Guarantee the welding quality of nuclear power station, improved sensitivity and the degree of accuracy of vacuum (-tight) housing bubble method detection check comparison method.In addition, when the leak rate of the test block that settles the standard does not meet requiring of RCC-M standard regulation, by using referance leak in conjunction with the leak rate test special container of development and design, realizing the dual use function of " leak rate test " and " detecting leak rate sensitivity check ", is the basis of the innovative technology method of checking vacuum (-tight) housing leak detection sensitivity.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the utility model example structure schematic diagram.
Fig. 2 is the utility model embodiment open mode structural representation.
Number in the figure is schematically as follows: 1-casing, 2-lid, the fastening ear of 3-, 4-sealing rubber pad, 5-support, 6-the first standard component, 7-the second standard component, 8-the 3rd standard component, 9-the 4th standard component.
Embodiment
Embodiment
The leak rate test special container of the vacuum leak examination criteria test block of the present embodiment as depicted in figs. 1 and 2, comprises casing 1 and is located at the lid 2 on casing 1, being provided with sealing rubber pad 4, lid 2 and the salable closure of casing 1 between casing 1 and lid 3; Casing 1 side is provided with standard mount and air flue.After considering container vacuum-pumping, need to bear certain pressure, the corrosion resistant plate that casing 1 and lid 2 are 6mm by thickness is made.
On the 4th standard component 9 on lid 2, be connected with tensimeter.
The present embodiment is designed to rectangular casing, so that vacuum (-tight) housing vacuumizes effective layout of hunting leak while observing.
During use, comprise two kinds of tests, be respectively: vacuum (-tight) housing bubble method and helium mass spectrum leak detection method of testing.When using helium mass spectrum leak detection method of testing to carry out the test of reference block leak rate, only stay the first standard component 6 as bleed-off passage, seal all the other interfaces, use bolt, together with casing 1 being tightly locked in lid 2 through fastening ear 3, due to the effect of sealing rubber pad 4, can reach higher seal degree, open helium mass spectrometer leak detector, adopt spray helium method to carry out leak rate range test to reference block.
When using vacuum (-tight) housing foam-forming method, select the 3rd standard component 8 as gas passage, seal no passage, use ring flange that the special container of the present embodiment is fixed.Referance leak is arranged on to container the second standard component 7 places, opens the 3rd standard component 8, gas-development agent is coated on referance leak, arrange vacuum (-tight) housing coverage criteria small opening, open vacuum pump, set up required vacuum tightness and keep as requested the corresponding time, observation caliber small opening has or not bubble to show.
In the present embodiment, in casing 1 surrounding welding, the corresponding connection of installation and fastening accessory, in order to guarantee operability and the leakproofness of container.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. the leak rate of a vacuum leak examination criteria test block test special container, is characterized in that: comprise casing and be located at the lid on described casing, being provided with sealing rubber pad, the salable closure of described lid and casing between described casing and lid; Described casing side is provided with standard mount and air flue.
2. the leak rate of vacuum leak examination criteria according to claim 1 test block test special container, is characterized in that: described casing and lid are hinged; Described lid and casing surrounding are provided with fastening ear in correspondence with each other, by the fastening effect of the bolt through described fastening ear, the salable closure of described lid and casing.
3. the leak rate of vacuum leak examination criteria according to claim 1 and 2 test block test special container, is characterized in that: described lid is provided with tensimeter, and described bottom half is provided with support.
4. the leak rate of vacuum leak examination criteria according to claim 1 and 2 test block test special container, is characterized in that: described fixture is ring flange.
5. the leak rate of vacuum leak examination criteria according to claim 1 and 2 test block test special container, is characterized in that: the corrosion resistant plate that described casing and lid are more than or equal to 6mm by thickness is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553760.6U CN203490043U (en) | 2013-09-06 | 2013-09-06 | Special leak rate test container for vacuum leak detection standard test block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553760.6U CN203490043U (en) | 2013-09-06 | 2013-09-06 | Special leak rate test container for vacuum leak detection standard test block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203490043U true CN203490043U (en) | 2014-03-19 |
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ID=50260866
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320553760.6U Expired - Fee Related CN203490043U (en) | 2013-09-06 | 2013-09-06 | Special leak rate test container for vacuum leak detection standard test block |
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| CN (1) | CN203490043U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500920A (en) * | 2016-11-08 | 2017-03-15 | 厦门建霖工业有限公司 | A kind of standard leak block and preparation method thereof and the standard tester using the standard leak block and its making, using method |
| CN108072492A (en) * | 2018-01-15 | 2018-05-25 | 辽宁工业大学 | A kind of vacuum leak detector |
| CN109029849A (en) * | 2018-06-25 | 2018-12-18 | 安庆市晶科电子有限公司 | A kind of system of batch detection transistor sealing leak |
| CN109632214A (en) * | 2018-11-30 | 2019-04-16 | 中国辐射防护研究院 | A kind of radioactive substance shipping container package containment properties detection system and method |
| CN111006821A (en) * | 2019-12-10 | 2020-04-14 | 西安欧中材料科技有限公司 | Powder disc sheath built-in type leakage detection device and leakage detection method thereof |
| CN113432802A (en) * | 2021-06-28 | 2021-09-24 | 南通理工学院 | Multipurpose low temperature container part leak rate detection simulator |
| CN116297818A (en) * | 2023-05-17 | 2023-06-23 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
-
2013
- 2013-09-06 CN CN201320553760.6U patent/CN203490043U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500920A (en) * | 2016-11-08 | 2017-03-15 | 厦门建霖工业有限公司 | A kind of standard leak block and preparation method thereof and the standard tester using the standard leak block and its making, using method |
| CN106500920B (en) * | 2016-11-08 | 2019-03-19 | 厦门百霖净水科技有限公司 | A kind of standard leak block and preparation method thereof and standard tester and its production, application method using the standard leak block |
| CN108072492A (en) * | 2018-01-15 | 2018-05-25 | 辽宁工业大学 | A kind of vacuum leak detector |
| CN109029849A (en) * | 2018-06-25 | 2018-12-18 | 安庆市晶科电子有限公司 | A kind of system of batch detection transistor sealing leak |
| CN109632214A (en) * | 2018-11-30 | 2019-04-16 | 中国辐射防护研究院 | A kind of radioactive substance shipping container package containment properties detection system and method |
| CN111006821A (en) * | 2019-12-10 | 2020-04-14 | 西安欧中材料科技有限公司 | Powder disc sheath built-in type leakage detection device and leakage detection method thereof |
| CN113432802A (en) * | 2021-06-28 | 2021-09-24 | 南通理工学院 | Multipurpose low temperature container part leak rate detection simulator |
| CN113432802B (en) * | 2021-06-28 | 2023-10-13 | 南通理工学院 | Multipurpose low-temperature container part leak rate detection simulator |
| CN116297818A (en) * | 2023-05-17 | 2023-06-23 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
| CN116297818B (en) * | 2023-05-17 | 2023-08-04 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20160906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |