CN105699022A - Gas leakage detector for sealing device - Google Patents
Gas leakage detector for sealing device Download PDFInfo
- Publication number
- CN105699022A CN105699022A CN201610225393.5A CN201610225393A CN105699022A CN 105699022 A CN105699022 A CN 105699022A CN 201610225393 A CN201610225393 A CN 201610225393A CN 105699022 A CN105699022 A CN 105699022A
- Authority
- CN
- China
- Prior art keywords
- valve
- outlet side
- gas
- leakage detector
- gas leakage
- 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
Links
Classifications
-
- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A gas leakage detector for sealing devices belongs to the technical field of detection, and especially relates to the improvement of the gas leakage detector for sealing devices. The gas leakage detector for sealing devices provided in the invention is high in accuracy and precision, and comprises a gas source. The gas leakage detector is characterized in that the gas source is connected with the gas inlet end of a valve A through a filter, the gas outlet end of the valve A is connected to the gas inlet ends of a valve B, a valve C and a valve D, the gas outlet end of the valve B is an exhaust end, the gas outlet end of the valve C is connected with a standard container, the gas outlet end of the valve D is connected with a container to be tested, a pressure difference sensor is connected between the gas outlet end of the valve C and the gas outlet end of the valve D, a compression gauge and an absolute pressure sensor are connected between the filter and the valve A, and the valve A, the valve B, the valve C and the valve D are controlled through four electric control valves of an electric control valve group.
Description
Technical field
The invention belongs to detection technique field, especially relate to the improvement of a kind of air locking gas leakage detector。
Background technology
The water heater of current gas appliance industry, kitchen range, gas meter, industrial various valve members, mechanical chemical industry, medical treatment, the air locking air-leakage test of the industry such as food be a highly important safety detection。The sealing propertytest of these air lockings has been formulated corresponding standard by country。The method that bubble-tight detection is traditional is had bubble method, water inspection method, static pressure method, U-tube method, helium mass spectrography etc.。But these methods generally require the longer waiting time, the reason that test request is higher and anthropic factor is more causes that the accuracy of test and precision are influenced to different extents, thus being not suitable for the online batch inspection of industry spot。
Summary of the invention
The present invention is aiming at the problems referred to above, it is provided that a kind of air locking gas leakage detector that a kind of accuracy is high and precision is high。
For realizing the above-mentioned purpose of the present invention, the present invention adopts the following technical scheme that, a kind of air locking gas leakage detector, including source of the gas, it is characterized in that: described source of the gas passes through filter connecting valve A inlet end, valve A outlet side connecting valve B, valve C and valve D inlet end, and the outlet side of valve B is exhaust end, valve C outlet side connection standard container, the outlet side of valve D connects testing container；Being connected to differential pressure pick-up between valve C outlet side and valve D outlet side, be connected to Pressure gauge and absolute pressure sensor between filter and valve A, described valve A, valve B, valve C and valve D control respectively through four electrically-controlled valve of electrically-controlled valve group；Differential pressure pick-up and absolute pressure sensor connect multiplexer respectively through modulate circuit, multiplexer connects single-chip microcomputer by A/D converter, the output port of single-chip microcomputer connect display screen and and three state buffer 74LS244, three state buffer 74LS244 connects electrically-controlled valve group and audible-visual annunciator by drive circuit, and three state buffer 74LS244 is also connected with keyboard。
As a kind of preferred version, described differential pressure pickup adopts IDP10 series little differential pressure sensor。
As another kind of preferred version, described single-chip microcomputer adopts 8752BH single-chip microcomputer。
Beneficial effects of the present invention。
Detector of the present invention can solve seal member and break away from the inconvenience of traditional detection method, it may be achieved the online batch detection of industry spot seal member, has the advantage that automatic alarm, self diagnosis and measuring accuracy are high, test period is short。
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram。
Fig. 2 is principle of the invention block diagram。
In figure, 1 be source of the gas, 2 be filter, 3 be Pressure gauge, 4 be absolute pressure sensor, 5 be valve A, 6 be valve D, 7 be differential pressure pick-up, 8 be valve B, 9 be valve C, 10 be volumetric standard, 11 be electrically-controlled valve group, 12 for testing container。
Detailed description of the invention
As shown in Figure 1-2, a kind of air locking gas leakage detector, including source of the gas 1, it is characterized in that: described source of the gas 1 is by filter 2 connecting valve A inlet end, valve A outlet side connecting valve B, valve C and valve D inlet end, the outlet side of valve B is exhaust end, valve C outlet side connection standard container 10, and the outlet side of valve D connects testing container 12；It is connected to differential pressure pick-up 7 between valve C outlet side and valve D outlet side, being connected to Pressure gauge 3 and absolute pressure sensor 4 between filter 2 and valve A, described valve A, valve B, valve C and valve D control respectively through four electrically-controlled valve of electrically-controlled valve group 11；Differential pressure pick-up 7 and absolute pressure sensor 4 connect multiplexer respectively through modulate circuit, multiplexer connects single-chip microcomputer by A/D converter, the output port of single-chip microcomputer connect display screen and and three state buffer 74LS244, three state buffer 74LS244 connects electrically-controlled valve group and audible-visual annunciator by drive circuit, and three state buffer 74LS244 is also connected with keyboard。
As a kind of preferred version, described differential pressure pickup 7 adopts IDP10 series little differential pressure sensor。
As another kind of preferred version, described single-chip microcomputer adopts 8752BH single-chip microcomputer。
System is inflated by source of the gas after filtering decompression, by the switching of five states in the on-off controlling system of valve A, B, C, D whole detection cycle, five state phases of system are 1 respectively, inflation phase-valve B closes, valve A opens, and valve C opens, and valve D opens。2, balance period-valve A closes, and valve B closes, and valve C opens, and valve D opens。3, the phase of measuring-valve A closes, and valve B closes, and valve C closes, and valve D closes。4, the phase of exitting-valve A closes, and valve B opens, and valve C opens, and valve D opens。5, standby phase-valve A close, valve B opens, and valve C opens, and valve D opens。By whether there is pressure reduction between differential pressure pick-up criterion container and testing container, if there is pressure reduction testing container gas leakage is described。
The foregoing is only the preferred embodiments of the present invention mode, it is impossible to limit the scope of protection of the invention with this, the change of any unsubstantiality that those skilled in the art does on the basis of the present invention and replacement belong to present invention scope required for protection。
Claims (3)
1. an air locking gas leakage detector, including source of the gas (1), it is characterized in that: described source of the gas (1) is by filter (2) connecting valve A inlet end, valve A outlet side connecting valve B, valve C and valve D inlet end, the outlet side of valve B is exhaust end, valve C outlet side connection standard container (10), the outlet side of valve D connects testing container (12)；Differential pressure pick-up (7) it is connected between valve C outlet side and valve D outlet side, being connected to Pressure gauge (3) and absolute pressure sensor (4) between filter (2) and valve A, described valve A, valve B, valve C and valve D control respectively through four electrically-controlled valve of electrically-controlled valve group (11)；Differential pressure pick-up (7) and absolute pressure sensor (4) connect multiplexer respectively through modulate circuit, multiplexer connects single-chip microcomputer by A/D converter, the output port of single-chip microcomputer connect display screen and and three state buffer 74LS244, three state buffer 74LS244 connects electrically-controlled valve group and audible-visual annunciator by drive circuit, and three state buffer 74LS244 is also connected with keyboard。
2. a kind of air locking gas leakage detector according to claim 1, it is characterised in that: described differential pressure pickup (7) adopts IDP10 series little differential pressure sensor。
3. a kind of air locking gas leakage detector according to claim 1, it is characterised in that: described single-chip microcomputer adopts 8752BH single-chip microcomputer。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610225393.5A CN105699022A (en) | 2016-04-12 | 2016-04-12 | Gas leakage detector for sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610225393.5A CN105699022A (en) | 2016-04-12 | 2016-04-12 | Gas leakage detector for sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105699022A true CN105699022A (en) | 2016-06-22 |
Family
ID=56219789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610225393.5A Pending CN105699022A (en) | 2016-04-12 | 2016-04-12 | Gas leakage detector for sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105699022A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060267A (en) * | 2018-07-26 | 2018-12-21 | 珠海格力电器股份有限公司 | Leakage detection device and method for air-conditioning water system |
| CN114486125A (en) * | 2022-02-14 | 2022-05-13 | 深圳市海瑞思自动化科技有限公司 | Large workpiece leakage detection device and detection method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10258017A1 (en) * | 2002-12-12 | 2004-06-24 | Daimlerchrysler Ag | Leakage measurement arrangement comprises a test volume connected to a test item so that any pressure change between the test volume and a reference volume can be related to a leak in the test item |
| CN201016836Y (en) * | 2007-02-14 | 2008-02-06 | 金刚生 | Portable leakage detector |
| CN101825514A (en) * | 2010-05-21 | 2010-09-08 | 北京理工大学 | Flow-type leakage detection method and device thereof |
| CN101957254A (en) * | 2009-07-17 | 2011-01-26 | 天津承宝自动化设备有限公司 | Differential pressure type large-volume leakage detector with standard substance |
| CN201917443U (en) * | 2010-12-21 | 2011-08-03 | 浙江亚太机电股份有限公司 | High-pressure gas precision detecting pipeline system used for detecting product |
| CN204043869U (en) * | 2013-12-31 | 2014-12-24 | 浙江大华技术股份有限公司 | A kind of air-tightness detection device |
| CN204165719U (en) * | 2014-09-05 | 2015-02-18 | 重庆智茂机械制造有限公司 | Air-leakage detector |
-
2016
- 2016-04-12 CN CN201610225393.5A patent/CN105699022A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10258017A1 (en) * | 2002-12-12 | 2004-06-24 | Daimlerchrysler Ag | Leakage measurement arrangement comprises a test volume connected to a test item so that any pressure change between the test volume and a reference volume can be related to a leak in the test item |
| CN201016836Y (en) * | 2007-02-14 | 2008-02-06 | 金刚生 | Portable leakage detector |
| CN101957254A (en) * | 2009-07-17 | 2011-01-26 | 天津承宝自动化设备有限公司 | Differential pressure type large-volume leakage detector with standard substance |
| CN101825514A (en) * | 2010-05-21 | 2010-09-08 | 北京理工大学 | Flow-type leakage detection method and device thereof |
| CN201917443U (en) * | 2010-12-21 | 2011-08-03 | 浙江亚太机电股份有限公司 | High-pressure gas precision detecting pipeline system used for detecting product |
| CN204043869U (en) * | 2013-12-31 | 2014-12-24 | 浙江大华技术股份有限公司 | A kind of air-tightness detection device |
| CN204165719U (en) * | 2014-09-05 | 2015-02-18 | 重庆智茂机械制造有限公司 | Air-leakage detector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060267A (en) * | 2018-07-26 | 2018-12-21 | 珠海格力电器股份有限公司 | Leakage detection device and method for air-conditioning water system |
| CN114486125A (en) * | 2022-02-14 | 2022-05-13 | 深圳市海瑞思自动化科技有限公司 | Large workpiece leakage detection device and detection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201867290U (en) | Air tightness testing device for automobile air-conditioning box | |
| CN206440441U (en) | A kind of differential pressure type air leakage tester | |
| CN201965006U (en) | Lithium ion battery differential pressure formula leak hunting device | |
| CN203479474U (en) | Vacuum tester | |
| CN100585359C (en) | Gas pressure regulator test device | |
| US8201438B1 (en) | Detection of gas leakage | |
| CN206638397U (en) | A kind of batteries of electric automobile bag air-tightness detection device | |
| CN202928762U (en) | Portable tester for automatic quantification measurement of airtightness | |
| CN104458161A (en) | Testing device and method for normally-open solenoid valve for auxiliary braking | |
| CN207730537U (en) | A kind of sack method VOC pretreating devices | |
| CN104343510A (en) | Gasoline car fuel evaporation pollutant control system testing device | |
| CN105699022A (en) | Gas leakage detector for sealing device | |
| CN214251422U (en) | Air tightness detection device | |
| CN109916568A (en) | Electric machine controller sealing propertytest system, device and method | |
| CN206362505U (en) | A kind of industrial valve device for detecting sealability | |
| CN108072499A (en) | A kind of bilayer air-conditioner pipe air tightness detection system and method | |
| CN107727388A (en) | A kind of air valve flow testing system | |
| CN109283297B (en) | Independent calibration sampling system for hydrogen online analysis | |
| CN106324047B (en) | Device and method for evaluating service life of catalytic combustion sensor | |
| CN206996308U (en) | Dry filter membrane cartridge test equipment | |
| CN110160773A (en) | A kind of pressure relief valve detection device and its detection method | |
| CN103134669A (en) | Checking platform of breather valve | |
| CN103645020A (en) | Filter sealing performance detection device | |
| CN201724796U (en) | System for carrying out vacuum leak detection on large vacuum chambers in batches | |
| CN205861174U (en) | A kind of pipeline liquid sealing and circulating device of intelligence piston volume tube assay device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |
|
| WD01 | Invention patent application deemed withdrawn after publication |