CN201016836Y - Portable leakage detector - Google Patents
Portable leakage detector Download PDFInfo
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- CN201016836Y CN201016836Y CNU2007200345784U CN200720034578U CN201016836Y CN 201016836 Y CN201016836 Y CN 201016836Y CN U2007200345784 U CNU2007200345784 U CN U2007200345784U CN 200720034578 U CN200720034578 U CN 200720034578U CN 201016836 Y CN201016836 Y CN 201016836Y
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- electromagnetic valve
- pressure
- detection
- solenoid valve
- gas
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Abstract
The utility model discloses a portable leak detector, consisting of a gas source, a detection gas pipeline sensing unit (2), an electric control display unit (3) and a power unit (4). Connected with a micro electromagnetic valve (5), a gas pipeline after a micro gas pump (1) is separated into three ways, which are respectively connected with a reference vessel (12), a port to be detected (11) and a deflation electromagnetic valve (6). A differential pressure sensor (9) is arranged between the port to be detected (11) and the reference vessel (12). And the port to be detected (11) is connected with a pressure sensor (10). The leakage detection measurement and display are implemented through the change of electrical signals output by the differential pressure sensor (9) and the pressure sensor (10). The utility model is not externally connected with the gas source and the power. The device used is a micro product with micro power consumption, which has the advantages of small volume, high detection atomization, accurate precision, liquid crystal displayed detection results and convenient carry and use.
Description
Technical field
The utility model relates to the impermeability detection range, particularly portable leak locator.
Background technology
The sealing element of low-pressure, little volume is measured its hermetic properties differential pressure principle commonly used.Existing leak locator is desktop computer all.Desktop computer is wanted external source of the gas and power supply, and only shows test results and do not show the change procedure of pressure and differential pressure in the test process.
The procreative leak locator of Japan's FUKUDA strain formula is a desktop computer, external source of the gas and power supply, does not show the process of test pressure and differential pressure, only shows test results, and its volume is 34 cubic decimeters, and its weight is 15 kilograms, 150 volt-amperes of power consumptions.
The leak locator that domestic Shenyang new precision instrument and equipment company limited produces also is a desktop computer, external source of the gas and power supply, does not show the process of test pressure and differential pressure, only show test results, its volume is 30 cubic decimeters, and its weight is 20 kilograms, 80 volt-amperes of power consumptions.
Summary of the invention
The purpose of this utility model provides a kind of portable leak locator, this instrument uses differential pressure principle, carry source of the gas and power supply, measuring process shows the variation of pressure and differential pressure, hand-holdable this instrument is to hunting leak under industry spot or the field condition, its volume is less than 1.5 cubic decimeters, and weight is less than 2.5 kilograms, and power consumption is less than 7 volt-amperes.
The purpose of this utility model is achieved by following technical proposals:
Portable leak locator, include source of the gas, detect gas circuit sensing unit (2) and electrically-controlled display element (3) and power supply unit (4), it is characterized in that described source of the gas adopts micro air pump (1), behind the air inlet miniature electromagnetic valve (5) of gas circuit behind the described micro air pump (1) through detection gas circuit sensing unit (2), be divided into three the tunnel, the first via inserts benchmark container (12) through detecting solenoid valve (7), the second tunnel process detects solenoid valve (8) and inserts tested port (11), and Third Road inserts pressure-releasing electromagnetic valve (6); Insert differential pressure pick-up (9) between tested port (11) and the benchmark container (12), be connected to pressure transducer (10) on the tested port (11) in addition; The control end of the signal output part of described differential pressure pick-up (9), pressure transducer (10) and miniature electromagnetic valve (5), pressure-releasing electromagnetic valve (6), detection solenoid valve (7), detection solenoid valve (8) all inserts electrically-controlled display element (3).
Described miniature electromagnetic valve (5), pressure-releasing electromagnetic valve (6), detection solenoid valve (7), detection solenoid valve (8), differential pressure pick-up (9), pressure transducer (10) adopt microminiaturized device.
Described tested port (11) is valve member or joint.
Described source of the gas detects gas circuit sensing unit (2) and electrically-controlled display element (3) and power supply unit (4) is all integrated is installed in the box unit.
Portable leak locator is made up of micro air pump (1), detection gas circuit sensing unit (2), electrically-controlled display element (3), power supply unit (4).
Micro air pump (1) is used powered battery, and under 100 kPas of conditions of pressure, delivery rate can reach 100 milliliters of per minutes, and its size is identical with a battery, is the best source of the gas of portable leak locator.
Detecting gas circuit sensing unit (2) is the heart of instrument, it is by air inlet miniature electromagnetic valve (5), pressure-releasing electromagnetic valve (6), detection solenoid valve (7) and detect solenoid valve (8), differential pressure pick-up (9), pressure transducer (10), tested port (11), benchmark container (12) formation, and tested port (11) inserts measured workpiece.These devices all are small-sized or microminiaturized.When micro air pump (1) to benchmark container (12) and by tested port (11) when measured workpiece inflate, air inlet miniature electromagnetic valve (5) is opened, pressure-releasing electromagnetic valve (6) is closed, and detects solenoid valve (7), detects solenoid valve (8) unlatching.When pressure reaches a certain setting value, signal of pressure transducer (10) output is closed air inlet solenoid valve (5), detection solenoid valve (7), detection solenoid valve (8), measured workpiece and benchmark container (12) are divided into two independently air chambers, benchmark container (12) does not leak, when measured workpiece has minute leakage, its pressure can diminish, and differential pressure pick-up (9) can detect this small variation, exports this small variation in the mode of electric weight.
Described electrically-controlled display element (3) by amplifier (13), A-D converter (14), LCD (15), single-chip microcomputer (16), can wipe memory (17), micro electromagnetic valve control (18), USB interface (19), operation keyboard (20) and constitute.When differential pressure pick-up (9), the electric signal that pressure transducer (10) transmits simulation amplifies by amplifier (13), behind A-D converter (14), become digital quantity and enter single-chip microcomputer (16), software program in the single-chip microcomputer (16) to the input quantity of operation keyboard (20) and the amount that can wipe memory (17) in order to micro electromagnetic valve control (18) and LCD (15) transfer instruction and data, make detection gas circuit sensing unit (2) operate as normal and LCD (15) demonstrate conditional curve and data, can carry out communication to computer by USB interface (19) simultaneously.
Described power supply unit (4) is made of microswitch power supply (21) and rechargeable battery set (22).When at the scene or the field when detecting by rechargeable battery set (22) to the instrument power supply, LCD when power shortage (15) can show the electric weight deficiency, at this moment connects civil power, is charged to rechargeable battery set (22) by microswitch power supply (21).Can detect simultaneously in the charging.
Portable leak locator beneficial effect is:
1. the utility model does not have the place leak detection of source of the gas and power supply that a kind of brand-new instrument product is provided owing to carry source of the gas and power supply for industry spot or field.
2. the utility model need not external source of the gas and power supply, compares desktop computer and can save detection time, improves detection efficiency.
3. the used device of the utility model is little power consumption product, than desktop computer power saving, province's gas, belongs to energy-conservation instrument product.
4. the utility model is owing to adopted the LCD of big vision area, and the mode that the pressure that detects overall process, piezometric are changed with curve shows, and gives impression directly perceived, reliable.
5. bigger measurement can be observed the charge pressure curve for leakage rate, and pressure fills less than setting value when leaking in a large number.
6. can observe the differential pressure curve for micro-leakage, provide measurement result simultaneously.
7. accuracy of detection is equal to or is better than desktop computer, and cost is equal to or less than desktop computer.
Description of drawings
Fig. 1 is the utility model structured flowchart
Liquid crystal display content synoptic diagram when Fig. 2 uses for the utility model.
Embodiment
The utility model is described in further detail below in conjunction with Fig. 1, Fig. 2:
In Fig. 1, the gas circuit of portable leak locator is by micro air pump (1) and detect gas circuit sensor (2) two parts formation.Detecting the gas circuit sensing unit is made of air inlet miniature electromagnetic valve (5), pressure-releasing electromagnetic valve (6), detection solenoid valve (7), detection solenoid valve (8), differential pressure pick-up (9), pressure transducer (10), tested port (11) and benchmark container (12) again.Wherein air inlet miniature electromagnetic valve (5), pressure-releasing electromagnetic valve (6), detection solenoid valve (7), detection solenoid valve (8) are miniature little power consumption solenoid valve of same model, do not leak when 300 kPas pressure is closed.Power consumption is 1/5th of traditional electrical magnet valve.Differential pressure pick-up (9) is a micro differential pressure sensor, and its volume is about one of three percentages of traditional differential pressure sensors, and weight is one of percentage of traditional differential pressure sensors, and power consumption is 1/5th of traditional differential pressure sensors.Pressure transducer (10) is 1/4th of a conventional pressure sensor volume, and weight is 1/10th, and power consumption is 1/3rd.Tested port (11) is generally valve member, joint etc.Benchmark container (12) is built-in, and inner volume is 6 milliliters.
Electrically-controlled display element (3) by amplifier (13), A-D converter (14), LCD (15), single-chip microcomputer (16), can wipe memory (17), micro electromagnetic valve control (18), USB interface (19) and operation keyboard (20) constitutes.Amplifier (13) simulating signal that transmission is come out to differential pressure pick-up (9) and pressure transducer (10) is carried out timesharing and is amplified.A-D converter (14) is with 12 high-precision adcs.It is 114 * 64mm that LCD (15) adopts ken area
2Big ken LCD, be used for procedure for displaying data and curve.Can wipe memory (17) for can wipe reading writing memory, be used for storage program and data, can store 60 days measured data usually.Can carry out qualification rate, a statistical calculation such as delivery-check qualified rate.USB interface (19) can be to upper dataphone, transmission data.Operation keyboard (20) is used for setup parameter, as charge pressure setting, the even time set of gas, test duration setting; The operation such as set, move, reset of differential pressure upper and lower limit.
Microswitch power supply (21) and rechargeable battery set (22) constitute power supply unit (4).Microswitch power supply (21) is just worked when inserting civil power, charges to rechargeable battery set.Fill once electricity, instrument can be with more than 10 days.
It among Fig. 2 the displaying contents synoptic diagram of LCD (15).The left side mainly shows the curve of charge pressure and inflationtime, the curve upper right side has the instantaneous value of pressure to show simultaneously, when pressure does not reach in the time of setting when wanting pressure set points, instrument can be reported to the police, " conclusion " in the middle of simultaneously below display be existing " * " also, the big leakage of expression measured workpiece.The left side of display below is a date and time, and each record for test all has date and time, is kept at and can wipes in the reading writing memory (17).The right of display shows the curve that differential pressure and time constitute, and the top of curve has the instantaneous value of differential pressure to show simultaneously.Being on duty is pressed in when not reaching the differential pressure upper limit set value in the official hour, has " √ " to occur in " conclusion " hurdle, and it is qualified to represent, otherwise it is defective " * " expression to occur.The bottom-right battery frame of display can glimmer when rechargeable battery set (22) power shortage, indicates to connect civil power and charges.
Provide the concrete explanation of manipulating below
1. power-on switch, display shows two coordinate systems, shows pressure, differential pressure, even equal time, test duration, inflationtime, the differential pressure upper limit etc. simultaneously.
2. adjust pressure, differential pressure etc. by operation keyboard, errorless back is confirmed.
3. connect measured workpiece, by the operation key, the test beginning.
4. observe curve and data variation, the back of reaching a conclusion selects data to preserve or do not preserve.
5. change test piece, test is turned off power switch after finishing.
Claims (4)
1. portable leak locator, include source of the gas, detect gas circuit sensing unit (2) and electrically-controlled display element (3) and power supply unit (4), it is characterized in that described source of the gas adopts micro air pump (1), behind the air inlet miniature electromagnetic valve (5) of gas circuit behind the described micro air pump (1) through detection gas circuit sensing unit (2), be divided into three the tunnel, the first via inserts benchmark container (12) through detecting solenoid valve (7), the second tunnel process detects solenoid valve (8) and inserts tested port (11), and Third Road inserts pressure-releasing electromagnetic valve (6); Insert differential pressure pick-up (9) between tested port (11) and the benchmark container (12), be connected to pressure transducer (10) on the tested port (11) in addition; The control end of the signal output part of described differential pressure pick-up (9), pressure transducer (10) and miniature electromagnetic valve (5), pressure-releasing electromagnetic valve (6), detection solenoid valve (7), detection solenoid valve (8) all inserts electrically-controlled display element (3).
2. portable leak locator according to claim 1 is characterized in that described miniature electromagnetic valve (5), pressure-releasing electromagnetic valve (6), detection solenoid valve (7), detection solenoid valve (8), differential pressure pick-up (9), pressure transducer (10) adopt microminiaturized device.
3. portable leak locator according to claim 1 is characterized in that described tested port (11) is valve member or joint.
4. portable leak locator according to claim 1 is characterized in that described source of the gas, detects gas circuit sensing unit (2) and electrically-controlled display element (3) and power supply unit (4) is all integrated is installed in the box unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200345784U CN201016836Y (en) | 2007-02-14 | 2007-02-14 | Portable leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200345784U CN201016836Y (en) | 2007-02-14 | 2007-02-14 | Portable leakage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016836Y true CN201016836Y (en) | 2008-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200345784U Expired - Fee Related CN201016836Y (en) | 2007-02-14 | 2007-02-14 | Portable leakage detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016836Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115678A (en) * | 2015-07-01 | 2015-12-02 | 天津博益气动股份有限公司 | Double-mode leak detector and detection method |
| CN105372024A (en) * | 2015-12-08 | 2016-03-02 | 天津博益气动股份有限公司 | Differential pressure type air tightness leak detection instrument using PWM to control solenoid valve and leak detection method of differential pressure type air tightness leak detection instrument |
| CN105699022A (en) * | 2016-04-12 | 2016-06-22 | 苏州寅泽缕弦电子技术有限公司 | Gas leakage detector for sealing device |
| CN106226002A (en) * | 2016-09-08 | 2016-12-14 | 双登集团股份有限公司 | A kind of lead-acid accumulator seals leakage detection apparatus |
| WO2016197309A1 (en) * | 2015-06-09 | 2016-12-15 | 深圳明珠盈升科技有限公司 | Leakage detection sensor and leakage detection method therefor |
| CN109540408A (en) * | 2017-09-21 | 2019-03-29 | 青海时代新能源科技有限公司 | Air tightness detection method and device |
-
2007
- 2007-02-14 CN CNU2007200345784U patent/CN201016836Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016197309A1 (en) * | 2015-06-09 | 2016-12-15 | 深圳明珠盈升科技有限公司 | Leakage detection sensor and leakage detection method therefor |
| CN105115678A (en) * | 2015-07-01 | 2015-12-02 | 天津博益气动股份有限公司 | Double-mode leak detector and detection method |
| CN105372024A (en) * | 2015-12-08 | 2016-03-02 | 天津博益气动股份有限公司 | Differential pressure type air tightness leak detection instrument using PWM to control solenoid valve and leak detection method of differential pressure type air tightness leak detection instrument |
| CN105699022A (en) * | 2016-04-12 | 2016-06-22 | 苏州寅泽缕弦电子技术有限公司 | Gas leakage detector for sealing device |
| CN106226002A (en) * | 2016-09-08 | 2016-12-14 | 双登集团股份有限公司 | A kind of lead-acid accumulator seals leakage detection apparatus |
| CN109540408A (en) * | 2017-09-21 | 2019-03-29 | 青海时代新能源科技有限公司 | Air tightness detection method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEFEI DAYANG AUTOMATION EQUIPMENT CO., LTD. Free format text: FORMER OWNER: JIN GANGSHENG Effective date: 20110105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 230011 ROOM 1006, BUILDING 5, HUIYUAN RESIDENTIAL QUATER, YAOHAI DISTRICT, HEFEI CITY, ANHUI PROVINCE TO: 230088 1/F, BUILDING 2, NO.9, TIANHU ROAD, HIGH-TECH ZONE, HEFEI CITY, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110105 Address after: High tech Zone of Hefei city in Anhui province Wu Road 230088 No. 9 2 1 floor Patentee after: Hefei Dayang Automatic Equipment Co., Ltd. Address before: 230011 room 5, 1006 Yuan Hui Yuan community, Yaohai District, Anhui, Hefei Patentee before: Jin Gangsheng |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20120214 |