CN202267578U - Direct pressure type airtightness leak hunting instrument - Google Patents
Direct pressure type airtightness leak hunting instrument Download PDFInfo
- Publication number
- CN202267578U CN202267578U CN2011203387840U CN201120338784U CN202267578U CN 202267578 U CN202267578 U CN 202267578U CN 2011203387840 U CN2011203387840 U CN 2011203387840U CN 201120338784 U CN201120338784 U CN 201120338784U CN 202267578 U CN202267578 U CN 202267578U
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- way solenoid
- solenoid valve
- pressure
- external pilot
- plc
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Abstract
A direct pressure type airtightness leak hunting instrument relates to a leak hunting instrument. A high pressure filter is respectively connected with a precise pressure-regulating valve and an external pilot three-position-five-way solenoid valve. The precise pressure-regulating valve is connected with the external pilot three-position-five-way solenoid valve. An electronic pressure measuring gauge is connected between the precise pressure-regulating valve and the external pilot three-position-five-way solenoid valve. The pilot three-position-five-way solenoid valve is connected with a to-be-detected object. A high precision pressure sensor is connected between the pilot three-position-five-way solenoid valve and the to-be-detected object. The high precision pressure sensor is connected with a PLC programmable program controller. The PLC programmable program controller is connected with the external pilot three-position-five-way solenoid valve and is also mutually connected with a human-machine interface. The direct pressure type airtightness leak hunting instrument is simple in principle and low in cost, convenient and practical, clean and pollution-free, etc.
Description
Technical field:
The utility model relates to a kind of leak detector, is specifically related to the airtight leak detector of direct press type that a kind of impermeability that is used for the air locking product of industries such as gas heater, gas kitchen ranges, gas meter, flow meter, valve, refrigerator, air-conditioning, automobile lamp and related accessory thereof detects.
Background technology:
The continuous progress of modern production technology has proposed increasingly high requirement to detection means, and the impermeability detection is a kind of as detection mode; The important effect of play more and more aspect the assurance product quality; Particularly,, can guarantee the impermeability of cylinder like automobile lamp in automobile industry; Directly affect the development of the performance of automobile along with the technology of leaking hunting, the research of gas leak detector makes the technology of leaking hunting obtain using widely.Traditional leak detection method as adopting water seaoning or suds spraying process, is differentiated workpiece according to tester's range estimation and whether is had leakage.The size of leaking depends on the subjective judgement with the tester, so it is difficult to eliminate the influence of human factor to test result, has also determined it can't measure the slip of workpiece quantitatively simultaneously.In addition, in this way after the test, also to clean, extra work such as dry and antirust processing, bring unnecessary trouble, operate dumbly in addition, be easy to generate erroneous judgement to production to workpiece, and the inventory analysis of unfavorable and data.
The utility model content:
The purpose of the utility model provides the airtight leak detector of direct press type; Operations such as it can be inflated according to test parameter and the standard set automatically, balance, detection, judgement, exhaust, demonstration, warning; Detect the minute leakage of workpiece at short notice; Thereby artificial factor in eliminate detecting realizes the standardization of leak detection work, and principle is simple, cost is lower, convenient and practical, clean advantage such as pollution-free.
In order to solve the existing problem of background technology, the utility model is to adopt following technical scheme: it comprises high pressure filter 1, accurate voltage regulating valve 2, electron pressure table 3, external pilot 3 position-5 way solenoid valve 4, high-precision pressure sensor 5, tested article 6, PLC plc 7, man-machine interface 8; High pressure filter 1 is connected with external pilot 3 position-5 way solenoid valve 4 with accurate voltage regulating valve 2 respectively; Accurate voltage regulating valve 2 is connected with external pilot 3 position-5 way solenoid valve 4; And be connected with electronic pressare-measuring table 3 between accurate voltage regulating valve 2 and the external pilot 3 position-5 way solenoid valve 4; Guide's 3 position-5 way solenoid valve 4 is connected with tested article 6, and is connected with high-precision pressure sensor 5 between guide's 3 position-5 way solenoid valve 4 and the tested article 6, and high-precision pressure sensor 5 is connected with PLC plc 7; PLC plc 7 is connected with external pilot 3 position-5 way solenoid valve 4, and interconnects with man-machine interface 8.
Described high pressure filter 1 can purify source of the gas, and service pressure is provided, and guarantees airtight machine operate as normal, regulates pressure to 0.2～0.5MPa, and next stage is supplied with accurate voltage regulating valve and external pilot 3 position-5 way solenoid valve working pressure.
Described accurate voltage regulating valve is to set tested device charge pressure, next stage running fire electron pressure table and external pilot 3 position-5 way solenoid valve air intake opening.
Described electron pressure table 3 is to show that the accurate voltage regulating pressure regulating valve is a charge pressure.
Described external pilot 3 position-5 way solenoid valve 4 is that the external pilot working pressure is provided by high pressure filter 1; Realize inflation, close and exhaust by PLC plc 7; High-precision pressure sensor 5 and tested article 6 are led in one outlet, and another outlet directly connects in the ability extraneous air.
Described high-precision pressure sensor 5 is that the real-time pressure analog quantity is directly passed to PLC.
Described PLC plc 7 is accomplished programmed control for all signal input and output.
Described man-computer interface 8 is that running parameter is set, real time data is monitored, test result shows.
Principle of work: by detecting requirements the stable detection source of the gas is provided by source of the gas, is pressurized on the measured workpiece through equipment then, after interior pressure reached detected pressures, gas is the entering detection-phase behind after a while stable.When workpiece to be detected was not revealed, detected pressures remained unchanged basically, revealed when measured workpiece exists; Gaseous tension in the workpiece As time goes on gas is revealed from measured workpiece and is progressively descended; The pressure transducer corresponding pressure of output in real time changes, and then by the parameter that is provided with in advance, system judges whether to reveal automatically; Artificial factor has been eliminated in the robotization of testing process complete system.
The utlity model has following beneficial effect: can inflate automatically according to test parameter and the standard set, operations such as balance, detection, judgement, exhaust, demonstration, warning; Detect the minute leakage of workpiece at short notice; Thereby eliminate artificial factor in the detection; Realize the standardization of leak detection work, principle is simple, cost is lower, convenient and practical, clean advantage such as pollution-free.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Embodiment:
Referring to Fig. 1, this embodiment adopts following technical scheme: it comprises high pressure filter 1, accurate voltage regulating valve 2, electron pressure table 3, external pilot 3 position-5 way solenoid valve 4, high-precision pressure sensor 5, tested article 6, PLC plc 7, man-machine interface 8; High pressure filter 1 is connected with external pilot 3 position-5 way solenoid valve 4 with accurate voltage regulating valve 2 respectively; Accurate voltage regulating valve 2 is connected with external pilot 3 position-5 way solenoid valve 4; And be connected with electronic pressare-measuring table 3 between accurate voltage regulating valve 2 and the external pilot 3 position-5 way solenoid valve 4; Guide's 3 position-5 way solenoid valve 4 is connected with tested article 6, and is connected with high-precision pressure sensor 5 between guide's 3 position-5 way solenoid valve 4 and the tested article 6, and high-precision pressure sensor 5 is connected with PLC plc 7; PLC plc 7 is connected with external pilot 3 position-5 way solenoid valve 4, and interconnects with man-machine interface 8.
Described high pressure filter 1 can purify source of the gas, and service pressure is provided, and guarantees airtight machine operate as normal, regulates pressure to 0.2～0.5MPa, and next stage is supplied with accurate voltage regulating valve and external pilot 3 position-5 way solenoid valve working pressure.
Described accurate voltage regulating valve is to set tested device charge pressure, next stage running fire electron pressure table and external pilot 3 position-5 way solenoid valve air intake opening.
Described electron pressure table 3 is to show that the accurate voltage regulating pressure regulating valve is a charge pressure.
Described external pilot 3 position-5 way solenoid valve 4 is that the external pilot working pressure is provided by high pressure filter 1; Realize inflation, close and exhaust by PLC plc 7; High-precision pressure sensor 5 and tested article 6 are led in one outlet, and another outlet directly connects in the ability extraneous air.
Described high-precision pressure sensor 5 is that the real-time pressure analog quantity is directly passed to PLC.
Described PLC plc 7 is accomplished programmed control for all signal input and output.
Described man-computer interface 8 is that running parameter is set, real time data is monitored, test result shows.
Principle of work: by detecting requirements the stable detection source of the gas is provided by source of the gas, is pressurized on the measured workpiece through equipment then, after interior pressure reached detected pressures, gas is the entering detection-phase behind after a while stable.When workpiece to be detected was not revealed, detected pressures remained unchanged basically, revealed when measured workpiece exists; Gaseous tension in the workpiece As time goes on gas is revealed from measured workpiece and is progressively descended; The pressure transducer corresponding pressure of output in real time changes, and then by the parameter that is provided with in advance, system judges whether to reveal automatically; Artificial factor has been eliminated in the robotization of testing process complete system.
Operations such as this embodiment can be inflated according to test parameter and the standard set automatically, balance, detection, judgement, exhaust, demonstration, warning; Detect the minute leakage of workpiece at short notice; Thereby eliminate artificial factor in the detection; Realize the standardization of leak detection work, principle is simple, cost is lower, convenient and practical, clean advantage such as pollution-free.
Claims (1)
1. the airtight leak detector of direct press type is characterized in that it comprises high pressure filter (1), accurate voltage regulating valve (2), electron pressure table (3), external pilot 3 position-5 way solenoid valve (4), high-precision pressure sensor (5), tested article (6), PLC plc (7), man-machine interface (8); High pressure filter (1) is connected with external pilot 3 position-5 way solenoid valve (4) with accurate voltage regulating valve (2) respectively; Accurate voltage regulating valve (2) is connected with external pilot 3 position-5 way solenoid valve (4); And be connected with electronic pressare-measuring table (3) between accurate voltage regulating valve (2) and the external pilot 3 position-5 way solenoid valve (4); Guide's 3 position-5 way solenoid valve (4) is connected with tested article (6); And be connected with high-precision pressure sensor (5) between guide's 3 position-5 way solenoid valve (4) and the tested article (6); High-precision pressure sensor (5) is connected with PLC plc (7), and PLC plc (7) is connected with external pilot 3 position-5 way solenoid valve (4), and interconnects with man-machine interface (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203387840U CN202267578U (en) | 2011-09-09 | 2011-09-09 | Direct pressure type airtightness leak hunting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203387840U CN202267578U (en) | 2011-09-09 | 2011-09-09 | Direct pressure type airtightness leak hunting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267578U true CN202267578U (en) | 2012-06-06 |
Family
ID=46158369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203387840U Expired - Fee Related CN202267578U (en) | 2011-09-09 | 2011-09-09 | Direct pressure type airtightness leak hunting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202267578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135706A (en) * | 2014-07-31 | 2014-11-05 | 歌尔声学股份有限公司 | A direct pressure type gas tightness detection device and a gas tightness detection method |
-
2011
- 2011-09-09 CN CN2011203387840U patent/CN202267578U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135706A (en) * | 2014-07-31 | 2014-11-05 | 歌尔声学股份有限公司 | A direct pressure type gas tightness detection device and a gas tightness detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20120909 |