CN201051040Y - Leakage detection device - Google Patents

Leakage detection device Download PDF

Info

Publication number
CN201051040Y
CN201051040Y CNU2007200104468U CN200720010446U CN201051040Y CN 201051040 Y CN201051040 Y CN 201051040Y CN U2007200104468 U CNU2007200104468 U CN U2007200104468U CN 200720010446 U CN200720010446 U CN 200720010446U CN 201051040 Y CN201051040 Y CN 201051040Y
Authority
CN
China
Prior art keywords
seal
seal closure
plate
base
web joint
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.)
Expired - Fee Related
Application number
CNU2007200104468U
Other languages
Chinese (zh)
Inventor
迟勇
潘石
卢春祥
孙晓东
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.)
DANDONG THERMAL METERS Co Ltd
Original Assignee
DANDONG THERMAL METERS 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 DANDONG THERMAL METERS Co Ltd filed Critical DANDONG THERMAL METERS Co Ltd
Priority to CNU2007200104468U priority Critical patent/CN201051040Y/en
Application granted granted Critical
Publication of CN201051040Y publication Critical patent/CN201051040Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A leakage detection device comprises a seal cover (1), a seal bottom plate (2), a drive device (3) which is used to drive the seal cover (1) to move up and down and is matched with the seal bottom plate (2). The seal cover (1) is provided with a gas pump tube (11), a digital display pressure switch (5), and an elastic pressure plate (6), the seal bottom plate (2) is provided with a differential transducer (7), a temperature sensor (8), and a gas discharge tube (9). The utility model is simple in structure, low in cost, convenient in operation, good in detection property, and strong in adaptability.

Description

Leak detecting device
Technical field
The utility model relates to and be used for objects such as housing are had or not that to leak be the device that sealing detects, especially for the device that in the gas meter, flow meter production parts is carried out Leak Detection.
Background technology
At present, utilize differential pressure pick-up to detect the device that leaks direct press type pick-up unit and differential pressure comparison expression pick-up unit are arranged.The direct press type pick-up unit is after measured piece is filled certain test pressure, the internal pressure of directly measuring measured workpiece with differential pressure pick-up changes, extrapolate the leakage rate of measured workpiece, this square law device is because to differential pressure pick-up accuracy requirement height, can only carry out minute-pressure to measured workpiece and detect, carry out high pressure and detect if be used to detect very little leakage rate or requirement, then accuracy requirement and the appliance arrangement to differential pressure pick-up requires very high, the manufacturing cost of pick-up unit is very high, is difficult to realize.Differential pressure comparison expression pick-up unit is that the differential pressure pick-up two ends are connected with the airtight container of measured workpiece with a standard respectively, certain test pressure is filled at its two ends simultaneously, after the pressure stability, the disconnection measured workpiece is communicated with standard sealed, detect within a certain period of time between them because of unbalanced leakage, and the differential pressure that produces on differential pressure pick-up changes.Detect though this mode device can carry out high pressure, owing to be subjected to measured workpiece with the standard sealed volume is inconsistent, deflection varies in size, the equal objective factor of heat leak amount influences restriction, influence detects effect and accuracy, causes erroneous judgement to break easily.
The utility model content
The purpose of this utility model provides a kind of simple in structure, and low cost of manufacture is easy to operate, detects the good leak detecting device of quality, especially for the device that in the gas meter, flow meter production housing parts is carried out Leak Detection.
The utility model comprises that seal closure 1, seal base 2, drive seal closure 1 move up and down the gearing 3 that cooperates with seal base 2, in seal closure 1, also be provided with spring bearer plate 6, on seal closure 1, offer exhaust tube 11, exhaust tube 11 connection negative pressure source---vacuum pumps 4, be provided with motorized valve 12 at exhaust tube 11, on seal closure 1, be provided with digital display pressure switch 5, on seal base 2, be provided with differential pressure transmitter 7, temperature sensor 8 and escape pipe 9, on escape pipe 9, be provided with motorized valve 91; Or on seal base 2, offer exhaust tube 11, exhaust tube 11 and connect negative pressure source---vacuum pumps 4, be provided with motorized valve 12 at exhaust tube 11, on seal base 2, be provided with digital display pressure switch 5, temperature sensor 8, on seal closure 1, be provided with differential pressure transmitter 7, escape pipe 9, on escape pipe 9, be provided with motorized valve 91.Earlier detected workpiece A is placed on the seal base 2 during its work, opening gearing 3 drive seal closures 1 moves down, the lower port of seal closure 1 cooperates with the seal base 2 that elastomeric material is made seal closure 1 sealing, the spring bearer plate 6 that is provided with in the seal closure 1 presses down detected workpiece A simultaneously, detected workpiece A is cooperated with seal base 2 detected workpiece A sealing, the interior pressure that produces in the detected workpiece A is discharged by the escape pipe on the seal base 29, close the motorized valve 91 on the escape pipe 9 in the detected workpiece A after pressure and the extraneous balance, by the decompression of bleeding of 4 pairs of seal closure 1 inner chambers of vacuum pump, negative pressure by 5 pairs of seal closure 1 inner chambers of digital display pressure switch is set control, detect detected workpiece A owing to leak the pressure variation that is produced by differential pressure transmitter 7, the temperature sensor 8 that is in the detected workpiece A chamber is used for comparing with environment temperature, the numerical value that differential pressure transmitter 7 is detected carries out temperature compensation, and it is by the electric control gear control detection.Offer exhaust tube 11 on the seal base 2, when on seal closure 1, being provided with differential pressure transmitter 7, its principle of work as previously mentioned, just change by detecting detected workpiece A pressure inside, change into the pressure that detects in detected workpiece A outside seal cover 1 chamber and change, judge the sealing that detects detected workpiece A.
The utility model is simple in structure, low cost of manufacture, simple to operation, be subjected to operating ambient temperature, pressure measurement gas temperature and measured workpiece deformation effect little, adaptive faculty is strong, the detection quality is good, can carry out leaks to various workpiece and detect, and is specially adapted to shell base part Leak Detection such as gas meter, flow meter housing.
Description of drawings
Fig. 1 is the utility model example structure synoptic diagram.
Fig. 2 is another example structure synoptic diagram of the utility model.
Embodiment
Shown in accompanying drawing 1 embodiment, utility model is by seal closure 1, seal base 2, drive seal closure 1 and move up and down the gearing 3 that cooperates with seal base 2, the spring bearer plate 6 and the electric control gear that are arranged in the seal closure 1 constitute, on seal closure 1, offer exhaust tube 11, exhaust tube 11 connects vacuum pump 4, be provided with motorized valve 12 at exhaust tube 11, on seal closure 1, be provided with digital display pressure switch 5, the middle part is provided with differential pressure transmitter 7 on seal base 2, temperature sensor 8 and escape pipe 9, on escape pipe 9, be provided with motorized valve 91, gearing 3 is Pneumatic cylinder devices, seal base 2 constitutes by big silica gel plate 20 and base plate 21 are compound, and spring bearer plate 6 is connected and composed by silica gel plate 60 and the base plate 61 compound pressing plates that the constitute interior napex by spring and seal closure 1.
Shown in accompanying drawing 2 embodiment, utility model by seal closure 1, seal base 2, drive seal closure 1 and move up and down the pneumatic cylinder gearing 3 that cooperates with seal base 2, be arranged on seal closure 1 interior spring bearer plate 6 and electric control gear and constitute, on seal base 2, offer exhaust tube 11, exhaust tube 11 connection negative pressure source---vacuum pumps 4, be provided with motorized valve 12 at exhaust tube 11, on seal base 2, be provided with digital display pressure switch 5, temperature sensor 8, on seal closure 1, be provided with differential pressure transmitter 7, escape pipe 9, on escape pipe 9, be provided with motorized valve 91.
Shown in accompanying drawing 1,2, the piston rod 31 of the utility model pneumatic cylinder gearing 3 is connected with seal closure 1 by web joint 32, be provided with floating junction 33 is connected with seal closure 1 at the middle part of web joint 32, be provided with slide-and-guide bar 35 with 1 of seal closure and pressure spring 36 cooperates at web joint 32 periphery, so that seal closure 1 is subjected to the applied pressure of balance and stability; Seal closure 1 is connected with spring bearer plate 6 by web joint 64, is provided with slide-and-guide bar 65 with 6 of spring bearer plates and pressure spring 66 cooperates in that web joint 64 is peripheral, so that detected workpiece A is subjected to the applied pressure of balance and stability.

Claims (6)

1. leak detecting device, it is characterized in that comprising seal closure (1), seal base (2), drive seal closure (1) and move up and down the gearing (3) that cooperates with seal base (2), be arranged on the spring bearer plate (6) in the seal closure (1), electric control gear, on seal closure (1), offer exhaust tube (11), exhaust tube (11) connects negative pressure source---vacuum pump (4), be provided with motorized valve (12) at exhaust tube (11), on seal closure (1), be provided with digital display pressure switch (5), on seal base (2), be provided with differential pressure transmitter (7), temperature sensor (8) and escape pipe (9) are provided with motorized valve (91) on escape pipe (9).
2. leak detecting device according to claim 1 is characterized in that gearing (3) is a Pneumatic cylinder device; Seal base (2) is by silica gel plate (20) and the compound formation of base plate (21); Spring bearer plate (6) is connected and composed by spring and seal closure (1) by the pressing plate of silica gel plate (60) and the compound formation of base plate (61).
3. leak detecting device according to claim 1, it is characterized in that gearing (3) is connected with seal closure (1) by web joint (32), be provided with floating junction (33) at the middle part of web joint (32) and be connected, between web joint (32) periphery and seal closure (1), be provided with slide-and-guide bar (35) and pressure spring (36) with seal closure (1); Seal closure (1) is connected with spring bearer plate (6) by web joint (64), is provided with slide-and-guide bar (65) and pressure spring (66) between web joint (64) periphery and spring bearer plate (6).
4. leak detecting device, it is characterized in that comprising seal closure (1), seal base (2), drive seal closure (1) and move up and down the gearing (3) that cooperates with seal base (2), be arranged on the spring bearer plate (6) in the seal closure (1), electric control gear, on seal base (2), offer exhaust tube (11), exhaust tube (11) connects negative pressure source---vacuum pump (4), be provided with motorized valve (12) at exhaust tube (11), on seal base (2), be provided with digital display pressure switch (5), temperature sensor (8), on seal closure (1), be provided with differential pressure transmitter (7), escape pipe (9) is provided with motorized valve (91) on escape pipe (9).
5. leak detecting device according to claim 4 is characterized in that gearing (3) is a Pneumatic cylinder device; Seal base (2) is by silica gel plate (20) and the compound formation of base plate (21); Spring bearer plate (6) is connected and composed by spring and seal closure (1) by the pressing plate of silica gel plate (60) and the compound formation of base plate (61).
6. leak detecting device according to claim 4, it is characterized in that gearing (3) is connected with seal closure (1) by web joint (32), be provided with floating junction (33) at the middle part of web joint (32) and be connected, between web joint (32) periphery and seal closure (1), be provided with slide-and-guide bar (35) and pressure spring (36) with seal closure (1); Seal closure (1) is connected with spring bearer plate (6) by web joint (64), is provided with slide-and-guide bar (65) and pressure spring (66) between web joint (64) periphery and spring bearer plate (6).
CNU2007200104468U 2007-01-31 2007-01-31 Leakage detection device Expired - Fee Related CN201051040Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200104468U CN201051040Y (en) 2007-01-31 2007-01-31 Leakage detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200104468U CN201051040Y (en) 2007-01-31 2007-01-31 Leakage detection device

Publications (1)

Publication Number Publication Date
CN201051040Y true CN201051040Y (en) 2008-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200104468U Expired - Fee Related CN201051040Y (en) 2007-01-31 2007-01-31 Leakage detection device

Country Status (1)

Country Link
CN (1) CN201051040Y (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011063587A1 (en) * 2009-11-27 2011-06-03 无锡市四方制桶有限公司 Detection device for detecting helium leak in steel barrel
CN102243159A (en) * 2010-05-10 2011-11-16 日本碍子株式会社 Method of detecting damage on saggar
CN102455235A (en) * 2010-11-02 2012-05-16 亚旭电脑股份有限公司 Pressure testing device
CN101738295B (en) * 2008-11-12 2012-05-23 雅马哈精密科技株式会社 Leak inspection apparatus
CN102680179A (en) * 2012-05-26 2012-09-19 西安煤矿机械有限公司 Method for detecting shrinkage porosity hole of root of motor barrel of rocker arm of cutting unit of coal mining machine
CN102777372A (en) * 2012-07-30 2012-11-14 宁波伏尔肯机械密封件制造有限公司 Static-pressure sealing detection device of automobile water pump water seal
CN102928178A (en) * 2012-10-31 2013-02-13 沈阳黎明航空发动机(集团)有限责任公司 Differential-pressure sealing test device and test method thereof
CN104535278A (en) * 2014-12-31 2015-04-22 珠海凌达压缩机有限公司 Detecting method and device for work-piece air tightness
CN104949810A (en) * 2015-06-29 2015-09-30 新乡天翼过滤技术检测有限公司 Leak detector for filter
CN105067202A (en) * 2015-07-24 2015-11-18 成都秦川科技发展有限公司 Electromechanical valve tightness intelligent detection device and detection method thereof
CN105547610A (en) * 2016-01-13 2016-05-04 安徽宁国晨光精工股份有限公司 Air tightness testing machine
CN105628310A (en) * 2016-02-17 2016-06-01 亿和精密工业(苏州)有限公司 Sealing performance testing device and method
CN106092470A (en) * 2016-08-02 2016-11-09 南京化工特种设备检验检测研究所 Pressure reaction still leak detector
CN106884137A (en) * 2015-12-16 2017-06-23 信义玻璃(天津)有限公司 The offline vacuum leak detection means in plated film negative electrode termination
CN107024323A (en) * 2015-11-26 2017-08-08 雅马哈精密科技株式会社 Leak inspection device and leak test method
CN108332921A (en) * 2018-02-05 2018-07-27 嘉兴乾昆工业设计有限公司 A kind of shielding centrifugal pump test device for air tightness
CN108692878A (en) * 2018-08-07 2018-10-23 安徽信息工程学院 Gas hood structure for filter seals detection
CN109237787A (en) * 2018-08-06 2019-01-18 哈工大机器人集团(江苏)华粹智能装备有限公司 A kind of novel water heating pipe sealing device
CN110553794A (en) * 2018-05-31 2019-12-10 威克拉公司 leak detection for heat exchanger plates
CN111051841A (en) * 2017-09-21 2020-04-21 株式会社电装 Leak inspection device and leak inspection method

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101738295B (en) * 2008-11-12 2012-05-23 雅马哈精密科技株式会社 Leak inspection apparatus
WO2011063587A1 (en) * 2009-11-27 2011-06-03 无锡市四方制桶有限公司 Detection device for detecting helium leak in steel barrel
CN102243159A (en) * 2010-05-10 2011-11-16 日本碍子株式会社 Method of detecting damage on saggar
CN102243159B (en) * 2010-05-10 2015-04-29 日本碍子株式会社 Method of detecting damage on saggar
CN102455235A (en) * 2010-11-02 2012-05-16 亚旭电脑股份有限公司 Pressure testing device
CN102680179A (en) * 2012-05-26 2012-09-19 西安煤矿机械有限公司 Method for detecting shrinkage porosity hole of root of motor barrel of rocker arm of cutting unit of coal mining machine
CN102680179B (en) * 2012-05-26 2014-09-10 西安煤矿机械有限公司 Method for detecting shrinkage porosity hole of root of motor barrel of rocker arm of cutting unit of coal mining machine
CN102777372B (en) * 2012-07-30 2015-02-18 宁波伏尔肯机械密封件制造有限公司 Static-pressure sealing detection device of automobile water pump water seal
CN102777372A (en) * 2012-07-30 2012-11-14 宁波伏尔肯机械密封件制造有限公司 Static-pressure sealing detection device of automobile water pump water seal
CN102928178A (en) * 2012-10-31 2013-02-13 沈阳黎明航空发动机(集团)有限责任公司 Differential-pressure sealing test device and test method thereof
CN102928178B (en) * 2012-10-31 2014-12-24 沈阳黎明航空发动机(集团)有限责任公司 Differential-pressure sealing test device and test method thereof
CN104535278A (en) * 2014-12-31 2015-04-22 珠海凌达压缩机有限公司 Detecting method and device for work-piece air tightness
CN104949810A (en) * 2015-06-29 2015-09-30 新乡天翼过滤技术检测有限公司 Leak detector for filter
CN105067202A (en) * 2015-07-24 2015-11-18 成都秦川科技发展有限公司 Electromechanical valve tightness intelligent detection device and detection method thereof
CN105067202B (en) * 2015-07-24 2018-12-04 成都秦川物联网科技股份有限公司 Electromechanical valve air-tightness intelligent detection equipment and its detection method
CN107024323A (en) * 2015-11-26 2017-08-08 雅马哈精密科技株式会社 Leak inspection device and leak test method
CN107024323B (en) * 2015-11-26 2020-09-22 雅马哈精密科技株式会社 Leak inspection device and leak inspection method
CN106884137A (en) * 2015-12-16 2017-06-23 信义玻璃(天津)有限公司 The offline vacuum leak detection means in plated film negative electrode termination
CN105547610A (en) * 2016-01-13 2016-05-04 安徽宁国晨光精工股份有限公司 Air tightness testing machine
CN105628310A (en) * 2016-02-17 2016-06-01 亿和精密工业(苏州)有限公司 Sealing performance testing device and method
CN106092470B (en) * 2016-08-02 2018-11-30 南京化工特种设备检验检测研究所 Pressure reaction still leak detector
CN106092470A (en) * 2016-08-02 2016-11-09 南京化工特种设备检验检测研究所 Pressure reaction still leak detector
CN111051841A (en) * 2017-09-21 2020-04-21 株式会社电装 Leak inspection device and leak inspection method
CN108332921A (en) * 2018-02-05 2018-07-27 嘉兴乾昆工业设计有限公司 A kind of shielding centrifugal pump test device for air tightness
CN110553794A (en) * 2018-05-31 2019-12-10 威克拉公司 leak detection for heat exchanger plates
US10914652B2 (en) 2018-05-31 2021-02-09 Wcr, Inc. Leak detection for heat exchanger plate
CN109237787A (en) * 2018-08-06 2019-01-18 哈工大机器人集团(江苏)华粹智能装备有限公司 A kind of novel water heating pipe sealing device
CN109237787B (en) * 2018-08-06 2021-08-27 华粹智能装备有限公司 Novel water heating pipe sealing device
CN108692878A (en) * 2018-08-07 2018-10-23 安徽信息工程学院 Gas hood structure for filter seals detection

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080423

Termination date: 20150131

EXPY Termination of patent right or utility model