CN112289469A - Leakage testing device - Google Patents

Leakage testing device Download PDF

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Publication number
CN112289469A
CN112289469A CN202011212568.1A CN202011212568A CN112289469A CN 112289469 A CN112289469 A CN 112289469A CN 202011212568 A CN202011212568 A CN 202011212568A CN 112289469 A CN112289469 A CN 112289469A
Authority
CN
China
Prior art keywords
hose
release connector
leak
gasket
detection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011212568.1A
Other languages
Chinese (zh)
Inventor
吴方亮
陈宇
黄满
薛泓元
匡红波
卜江涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG LUNTE ELECTROMECHANICAL CO Ltd
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Original Assignee
ZHEJIANG LUNTE ELECTROMECHANICAL CO Ltd
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHEJIANG LUNTE ELECTROMECHANICAL CO Ltd, Shanghai Nuclear Engineering Research and Design Institute Co Ltd filed Critical ZHEJIANG LUNTE ELECTROMECHANICAL CO Ltd
Priority to CN202011212568.1A priority Critical patent/CN112289469A/en
Publication of CN112289469A publication Critical patent/CN112289469A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C17/00Monitoring; Testing ; Maintaining
    • G21C17/002Detection of leaks
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21DNUCLEAR POWER PLANT
    • G21D1/00Details of nuclear power plant
    • G21D1/02Arrangements of auxiliary equipment
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The invention discloses a leakage testing device which comprises a tested product, a compression nut, a compression sleeve, elastic packing, a gasket, a packing box, a vacuum clamping quick-release connector, a hose and a leakage detecting device, wherein the open end of the tested product forms a sealing device through the compression nut, the compression sleeve, the elastic packing, the gasket and the packing box, the vacuum clamping quick-release connector, the hose and the leakage detecting device form a flexible leakage detecting device, one end of the hose is connected with the sealing device, and the other end of the hose is connected with the leakage detecting device. The invention has simple and reliable structure and small volume, can be well suitable for various mineral insulation armor products, can be suitable for leakage measurement of thermocouples, detectors, heaters or other mineral insulation armor products used in nuclear power stations, can also be used for other industrial products, and has simple and reliable use.

Description

Leakage testing device
Technical Field
The present invention relates to a leak test apparatus.
Background
In the normal operation process of the nuclear power station, the inside of the reactor is high-temperature, high-pressure, high-corrosion and strong-radiation. The insulation performance of nuclear power instruments such as armored thermocouples, armored thermal resistors, self-powered neutron detectors and the like needs to be kept within a certain range for a long time, the sealing performance of a shell of the nuclear power instrument is critical, water and gas intrusion is prevented, namely, the leakage rate of the nuclear power instrument in the service life is controlled within an acceptable range, an existing leakage testing device generally needs to be provided with a pressurizing device, the problem of testing uncertainty exists, and under the condition that the leakage speed is high, the problem that the leakage is finished but the leakage is mistakenly considered to be zero exists.
Disclosure of Invention
The invention aims to provide a leakage test device to solve the problems that the existing armored product filled with mineral insulating materials is inconvenient and unreliable in leakage test.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a leakage testing device comprises a tested product, a compression nut, a compression sleeve, elastic packing, a gasket, a packing box, a vacuum clamping quick-release connector, a hose and a leakage detection device, wherein the open end of the tested product forms a sealing device through the compression nut, the compression sleeve, the elastic packing, the gasket and the packing box, the vacuum clamping quick-release connector, the hose and the leakage detection device form a flexible leakage detection device, one end of the hose is connected with the sealing device, and the other end of the hose is connected with the leakage detection device.
Furthermore, the stuffing box is connected with the hose through a vacuum clamping quick-release connector, and the hose is connected with the leakage detection device through the vacuum clamping quick-release connector.
Further, the hose is U-shaped.
Further: the tested product is a mineral insulation armored product, and is an armored thermocouple, an armored thermal resistor, a self-powered neutron detector or a heating pipe.
Further, the shell of the tested product is a metal pipe, and the interior of the metal pipe is filled with mineral insulating materials.
Further: the limiting pin is arranged below the pressing sleeve, and when the pressing nut is screwed down, the limiting pin prevents the pressing sleeve, the elastic filler and the gasket from rotating along with the pressing sleeve, so that the tested product is twisted.
Furthermore, helium is sprayed on the outer surface of the product to be detected at normal pressure, and a gas passage is formed by the sealing device, the vacuum clamping quick-release connector, the hose and the leakage detection device.
The invention has the following beneficial effects:
1. because the helium is sprayed at normal pressure for leak detection, a high-pressure gas source and a complex sealing structure are not needed, and the operation can be simple only by using a helium bag at normal pressure;
2. the sealing device is provided with a limiting pin, so that the tested product can be prevented from twisting during sealing;
3. the flexible pipe is used for connection, so that a tested product is convenient to mount, and insulating materials in the tested product are prevented from scattering into the leakage testing device;
4. the elastic packing is used for sealing, so that the tested product is not damaged and can be reliably sealed;
5. the vacuum clamping quick-release connector is used, so that the tested product can be conveniently and quickly mounted, dismounted and replaced.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification.
As shown in fig. 1, an embodiment of a leak testing device includes a tested product 1, a compression nut 2, a limit pin 3, a compression sleeve 4, an elastic packing 5, a gasket 6, a stuffing box 7, a vacuum clamping quick-release connector 8, a hose 9, and a leak detecting device 10, wherein a sealing device is formed by the compression nut 2, the limit pin 3, the compression sleeve 4, the elastic packing 5, the gasket 6, and the stuffing box 7 at the opening end of the tested product 1, the vacuum clamping quick-release connector 8, the hose 9, and the leak detecting device 10, a flexible leak detecting device is formed by the vacuum clamping quick-release connector 8, the hose 9, and the leak detecting device 10, one end of the hose 9 is connected with the sealing device, and. In the embodiment, the hose 9 has a U-shape.
Wherein, the stuffing box 7 is connected with a hose 9 through a vacuum clamping quick-release connector 8, and the hose 9 is connected with a leakage detection device 10 through the vacuum clamping quick-release connector 8.
The shell of the tested product 1 is a metal pipe, mineral insulating materials are filled in the metal pipe, and the tested product 1 is a mineral insulating armored product which can be an armored thermocouple, an armored thermal resistor, a self-powered neutron detector, a heating pipe and the like. The shell of the tested product is a metal tube, mineral insulating materials are filled in the metal tube, and functional elements of the metal tube can be a thermocouple electrode, a thermal resistance element, a detector emitter, a core wire, a heating wire and the like.
Wherein, the spacer pin 3 is arranged under the compression sleeve 4, and the spacer pin 3 prevents the compression sleeve 4, the elastic filler 5 and the gasket 6 from rotating along with the rotation to further twist the tested product 1 when the compression nut 2 is screwed down.
Helium is sprayed on the outer surface of the tested product 1 at normal pressure, and a gas passage is formed by a sealing device, a vacuum clamping quick-release connector 8, a hose 9 and a leakage detection device 10, so that the existence and the leakage degree of the shell of the tested product 1 are detected.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The utility model provides a leak testing device, includes product (1) under test, gland nut (2), compresses tightly cover (4), elastic filler (5), gasket (6), packing box (7), vacuum clamp quick-release connector (8), hose (9), leak detection device (10), its characterized in that: the opening end of the tested product (1) forms a sealing device with a stuffing box (7) through a compression nut (2), a compression sleeve (4), an elastic filler (5), a gasket (6), the vacuum clamping quick-release connector (8), a hose (9) and a leakage detection device (10) form a flexible leakage detection device, one end of the hose (9) is connected with the sealing device, and the other end of the hose is connected with the leakage detection device (10).
2. The leak test apparatus according to claim 1, wherein: the stuffing box (7) is connected with the hose (9) through the vacuum clamping quick-release connector (8), and the hose (9) is connected with the leakage detection device (10) through the vacuum clamping quick-release connector (8).
3. Leak testing device according to claim 1 or 2, characterized in that the hose (9) is U-shaped.
4. The leak test apparatus according to claim 1, wherein: the tested product (1) is a mineral insulation armored product, and is an armored thermocouple, an armored thermal resistor, a self-powered neutron detector or a heating pipe.
5. Leak testing device according to claim 1 or 4, characterized in that the casing of the product under test (1) is a metal tube, the interior of which is filled with mineral insulation material.
6. The leak test apparatus according to claim 1, wherein: the device is characterized by further comprising a limiting pin (3) which is arranged below the pressing sleeve (4), and when the pressing nut (2) is screwed down, the limiting pin (3) prevents the pressing sleeve (4), the elastic packing (5) and the gasket (6) from rotating along with the pressing sleeve (4), the elastic packing and the gasket to further twist the tested product (1).
7. The leak testing device according to claim 1, wherein the outer surface of the tested product is sprayed with helium at atmospheric pressure, and a gas passage is formed by the sealing device, the vacuum clamping quick release connector (8), the hose (9) and the leak detection device (10).
CN202011212568.1A 2020-11-03 2020-11-03 Leakage testing device Pending CN112289469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011212568.1A CN112289469A (en) 2020-11-03 2020-11-03 Leakage testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011212568.1A CN112289469A (en) 2020-11-03 2020-11-03 Leakage testing device

Publications (1)

Publication Number Publication Date
CN112289469A true CN112289469A (en) 2021-01-29

Family

ID=74351251

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011212568.1A Pending CN112289469A (en) 2020-11-03 2020-11-03 Leakage testing device

Country Status (1)

Country Link
CN (1) CN112289469A (en)

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08285718A (en) * 1995-04-11 1996-11-01 Nikon Corp Leakage measuring apparatus
CN101040179A (en) * 2004-10-16 2007-09-19 因菲康有限公司 Method and device for detecting leaks
JP2008101957A (en) * 2006-10-18 2008-05-01 Pentax Corp Method of detecting leak location in endoscope
JP2008275360A (en) * 2007-04-26 2008-11-13 Fuji Electric Systems Co Ltd Method of detecting air leakage in vacuum system
CN201795177U (en) * 2010-07-23 2011-04-13 深圳市利源水务设计咨询有限公司 Device for sealing wall penetrating pipeline of deodoriser
CN102313627A (en) * 2011-05-04 2012-01-11 友达光电股份有限公司 Weld bead leak-detecting cladding ring, system and method thereof
CN103471780A (en) * 2013-08-27 2013-12-25 宁波明欣化工机械有限责任公司 System and method for detecting welding seam of end cover of sealed container
CN103592086A (en) * 2013-09-23 2014-02-19 上海卫星装备研究所 Device and method for detecting leak rate of spacecraft heat pipe
CN103604569A (en) * 2013-11-04 2014-02-26 北京卫星环境工程研究所 Rapid connection device of straight pipe helium mass spectrometer leak detection
CN203572620U (en) * 2013-11-28 2014-04-30 天津华赛尔传热设备有限公司 Leak detection apparatus for welding seams of single plate pair of full welded plate heat exchanger
JP2014134513A (en) * 2013-01-11 2014-07-24 Fukuda:Kk Leak test method and device
CN204098842U (en) * 2014-09-16 2015-01-14 江苏宏泰石化机械有限公司 A kind of polished rod sealer of automatic supplementary angle correction
CN104637556A (en) * 2015-01-15 2015-05-20 中国核动力研究设计院 Method for detecting airtight structure of electrical heating element of pressure stabilizer in pressurized water reactor nuclear power station and end-plug and casing weld joint helium leak detection device
CN104729813A (en) * 2015-03-16 2015-06-24 舞阳钢铁有限责任公司 Rapid leakage detection tool and detection and repair process of pipe type heat exchanger
CN107340101A (en) * 2017-07-03 2017-11-10 中国航空工业集团公司北京长城计量测试技术研究所 A kind of sealing device gas tiny leakage evaluating apparatus and method
CN108474713A (en) * 2016-01-21 2018-08-31 普发真空公司 Injection apparatus and leak detection module
CN207864634U (en) * 2017-12-14 2018-09-14 嘉兴市亚一达特种钢铸造有限公司 Cryogenic globe valve
CN109073495A (en) * 2016-03-31 2018-12-21 英福康有限责任公司 Search is leaked using the gas of test gas injection apparatus
CN209979167U (en) * 2019-06-03 2020-01-21 宜昌奥佳新材料科技有限公司 Sealing test system
CN211010130U (en) * 2019-12-05 2020-07-14 四川良川机械设备有限公司 Upper sealing structure of low-temperature valve stuffing box

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08285718A (en) * 1995-04-11 1996-11-01 Nikon Corp Leakage measuring apparatus
CN101040179A (en) * 2004-10-16 2007-09-19 因菲康有限公司 Method and device for detecting leaks
JP2008101957A (en) * 2006-10-18 2008-05-01 Pentax Corp Method of detecting leak location in endoscope
JP2008275360A (en) * 2007-04-26 2008-11-13 Fuji Electric Systems Co Ltd Method of detecting air leakage in vacuum system
CN201795177U (en) * 2010-07-23 2011-04-13 深圳市利源水务设计咨询有限公司 Device for sealing wall penetrating pipeline of deodoriser
CN102313627A (en) * 2011-05-04 2012-01-11 友达光电股份有限公司 Weld bead leak-detecting cladding ring, system and method thereof
JP2014134513A (en) * 2013-01-11 2014-07-24 Fukuda:Kk Leak test method and device
CN103471780A (en) * 2013-08-27 2013-12-25 宁波明欣化工机械有限责任公司 System and method for detecting welding seam of end cover of sealed container
CN103592086A (en) * 2013-09-23 2014-02-19 上海卫星装备研究所 Device and method for detecting leak rate of spacecraft heat pipe
CN103604569A (en) * 2013-11-04 2014-02-26 北京卫星环境工程研究所 Rapid connection device of straight pipe helium mass spectrometer leak detection
CN203572620U (en) * 2013-11-28 2014-04-30 天津华赛尔传热设备有限公司 Leak detection apparatus for welding seams of single plate pair of full welded plate heat exchanger
CN204098842U (en) * 2014-09-16 2015-01-14 江苏宏泰石化机械有限公司 A kind of polished rod sealer of automatic supplementary angle correction
CN104637556A (en) * 2015-01-15 2015-05-20 中国核动力研究设计院 Method for detecting airtight structure of electrical heating element of pressure stabilizer in pressurized water reactor nuclear power station and end-plug and casing weld joint helium leak detection device
CN104729813A (en) * 2015-03-16 2015-06-24 舞阳钢铁有限责任公司 Rapid leakage detection tool and detection and repair process of pipe type heat exchanger
CN108474713A (en) * 2016-01-21 2018-08-31 普发真空公司 Injection apparatus and leak detection module
CN109073495A (en) * 2016-03-31 2018-12-21 英福康有限责任公司 Search is leaked using the gas of test gas injection apparatus
CN107340101A (en) * 2017-07-03 2017-11-10 中国航空工业集团公司北京长城计量测试技术研究所 A kind of sealing device gas tiny leakage evaluating apparatus and method
CN207864634U (en) * 2017-12-14 2018-09-14 嘉兴市亚一达特种钢铸造有限公司 Cryogenic globe valve
CN209979167U (en) * 2019-06-03 2020-01-21 宜昌奥佳新材料科技有限公司 Sealing test system
CN211010130U (en) * 2019-12-05 2020-07-14 四川良川机械设备有限公司 Upper sealing structure of low-temperature valve stuffing box

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