CN104359630A - Portable machine box gas tightness leak detector - Google Patents
Portable machine box gas tightness leak detector Download PDFInfo
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- CN104359630A CN104359630A CN201410705390.2A CN201410705390A CN104359630A CN 104359630 A CN104359630 A CN 104359630A CN 201410705390 A CN201410705390 A CN 201410705390A CN 104359630 A CN104359630 A CN 104359630A
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- pipeline
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- way valve
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- 239000007788 liquid Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 78
- 238000001514 detection method Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 235000009262 Dracaena angustifolia Nutrition 0.000 description 3
- 240000007833 Dracaena angustifolia Species 0.000 description 3
- 239000000112 cooling gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention provides a portable machine box gas tightness leak detector which is composed of an gas conveying unit, a pressure control unit, a pneumatic one-way valve, a two-position three-way valve, an gasflow display bottle and the like. The pressure control unit is connected with the gas conveying unit through a signal line, and an gas conveying port of the gas conveying unit is connected with a first three-way connector through a pipeline. One port of the first three-way connector is connected with a first pipeline, the gasflow display bottle, a second pipeline and one gas inlet port of the two-position three-way valve, and the other port of the first three-way connector is connected with a third pipeline, a standard gas tank, a fourth pipeline and the other gas inlet port of the two-position three-way valve. The gas outlet end of the two-position three-way valve is connected with a second three-way connector through a pipeline, and the second three-way connector is connected with the pressure control unit through a sixth pipeline and is connected with a detected container through a fifth gas conveying pipe. The portable machine box gas tightness leak detector is smaller in space needed by working and lower in executory cost. The pressure control unit is used for conducting pressure control, so that equipment operation is more automatic and easier, and the influence of the subjectivity of a detector on the equipment operation is small.
Description
Technical field
The invention belongs to device air tightness detection leakage detecting instrument equipment, particularly relate to a kind of Portable machine box impermeability leak locator.
Background technology
Along with the more new development that all kinds of mechanical technology of continuous progress of industrial technology is maked rapid progress, mechanical seal is more and more applied in container production field as comparatively reliable encapsulating method, especially at high pressure, use coverage rate wider in the class high density closed containers such as high-quality, if also cause fire possibly because this type of container of high density character in use there occurs to leak and exceed a certain amount of not only harmful to human, blast, the serious consequences such as harmful gas fills the air, cause irremediable loss, therefore air-leakage test be for this type of closed container produce after an important detection operation, air-tightness detection method has bubble method, semar technique, chemical gas spike leak detecting, pressure method of changing, discharge method, supercritical ultrasonics technology etc., because metal material allows and the restriction of measured device visuality, traditional air-tightness detection method many employings bubble method and semar technique.
Bubble method is immersed in the water by workpiece, be filled with pressurized air, then the bubble that therefrom leaks out is collected within a certain period of time to measure leakage rate, with the naked eye observe bubble position determination leakage point, what namely whole for workpiece immersion was full of liquid by leakage detection by bubble emission method equipment immerses in pond, then source of the gas is used to inflate tested container, with discernable by eye identification air-leak section, air leakage.
Semar technique is the liquid smearing the easy generation bubble of suds one class at the vessel surface being filled with certain air pressure, the liquid of bubble method is replaced with other surface attachment liquid, to observe the size and location that the situation producing bubble detects leakage rate.
The leak test plant of this quasi-tradition all also exists that examined personnel's subjective impact is comparatively large, sense cycle is longer, can not realize detecting the shortcomings such as robotization, in addition, immerse position, pond in leakage detection by bubble emission method equipment must be suitable for observing, pond body material is penetrating, enough large volumes must be had, but metal works contact liq easily gets rusty, perishable, testee volume is excessive sometimes, so this type of detection method and equipment thereof inapplicable in some cases.
Summary of the invention
Technical matters to be solved by this invention is avoid the weak point of above-mentioned traditional leak hunting method and equipment thereof and provide a kind of Portable machine box impermeability leak locator, directly measured workpiece is not contacted to make detection product in testing process, can Aulomatizeted Detect degree of intelligence high, show leakage situation using gas display bottle as information carrier, examined personnel's subjective impact is less can inspection instrument more accurately.
The technical scheme that the present invention takes is:
Provide a kind of Portable machine box impermeability leak locator, it comprises gas transport unit, and described gas transport unit gas transmission port is connected to Pneumatic check valve inlet end by pipeline, and Pneumatic check valve outlet side is connected to the first three-way connection first port by pipeline; First three-way connection second port connects one end of the first pipeline, and the other end of the first pipeline immerses in the liquid be provided with in gas display bottle; Have air outlet above the liquid be provided with in air-flow display bottle, air-flow display bottle air outlet is connected to an air inlet port of two position three-way valve by the second pipeline; First three-way connection the 3rd port connects one end of the 3rd pipeline, and the other end of the 3rd pipeline is connected to the inlet end of standard gas cylinders, and standard gas cylinders air outlet is connected to another air inlet port of two position three-way valve by the 4th pipeline; Two position three-way valve outlet side is connected to for the 5th gas piping to tested container conveying gas by pipeline.
Further, also include pressure control unit, wherein pressure control unit signal output part connects gas transport unit signal receiving end by signal wire, the pressure sensitive port of pressure control unit is connected to the first port of the second three-way connection by the 6th pipeline, one end of described 5th gas piping is connected to the second port of the second three-way connection, and the air outlet of described two position three-way valve is connected to the 3rd port of the second three-way connection by pipeline.
Further, described first pipeline inserts the downward bending in 90 ° of gas display bottle part.
Wherein, pipeline between above-mentioned gas transport unit and Pneumatic check valve and between Pneumatic check valve and the first three-way connection, be connected to the 3rd pipeline in standard gas cylinders, the 4th pipeline, and the pipeline between two position three-way valve and the second three-way connection, 5th gas piping of the second port connection of the second three-way connection, the formation that is connected successively adds pressure gas channel;
Pipeline between gas transport unit and Pneumatic check valve and between Pneumatic check valve and the first three-way connection is connected to the 3rd pipeline in standard gas cylinders, be connected to the first pipeline on gas display bottle, the second pipeline, and the pipeline that two position three-way valve connects, 5th gas piping of the second port connection of the second three-way connection, is connected successively and forms leak detection gas circuit.
Add pressure gas channel, leak detection gas circuit common gas supply unit pressurizes as source of the gas, the 5th gas piping connects tested container as test pipeline, all uses two position three-way valve to change maincenter as function.
The present invention is compared with background technology, and tool has the following advantages:
Described adds pressure gas channel and the pipeline between leak detection gas circuit common gas supply unit and the first three-way connection, shares the pipeline between the second three-way connection and tested container, simplifies gas circuit structure.
Gas display bottle is used to replace immersing pond in order to what immerse tested container in used equipment, integrate the first three-way connection, the second three-way connection, two position three-way valve and each pipeline and form multi-functional composite air channel, reduce equipment volume, such that equipment work requisite space is less, executory cost is lower.
Gas transport unit is used to carry out gas circuit pressurization as source of the gas, use pressure control unit balance airline pressure, ensure pressure equilibrium between standard gas cylinders and tested container, make that equipment operating is more intelligent, robotization, manipulation two position three-way valve carries out pressurization and leak detection function changes, make equipment use easy, be easy to operate.
Utilize between the standard gas cylinders after principle of differential pressure inspection balance pressurization and tested container and whether there is pressure differential, concrete presentation is shown as, a large amount of bubble whether is there is in gas display bottle, to judge whether tested container exists leakage, the immersion naked eyes recognition methods of abandoning tradition, makes the not direct contact liq of tested container, carries out drying and antirust treatment to remove to tested container, testing result examined personnel subjective impact is less, more convenient to operate.
Pipeline, three-way connection, two position three-way valve all adopt the universal standard device on market, and integrated level is high, and therefore equipment volume is little, cost is low, interchangeability is good, make this equipment more be easy to batch production.
Accompanying drawing explanation
Fig. 1 is theory structure block scheme of the present invention.
Fig. 2 is air-flow display bottle structural representation.
Embodiment
The present invention includes parts is: gas transport unit 1, Pneumatic check valve 2, the first three-way connection 3, standard gas cylinders 4, air-flow display bottle 5, manual two-position three-way valve 6, pressure control unit 7, the second three-way connection 8.
The pipeline comprised is: the first pipeline 35, second pipeline the 56, three pipeline the 34, four pipeline the 46, five gas piping the 89, six gas piping 78.
Shown in composition graphs 1, cabinet impermeability leak locator has pressure control unit 7, pressure control unit 7 signal output part is connected to gas transport unit 1 signal receiving end by signal wire, pressure control unit 7 is with pressure sensitive port, this port is connected to the first port of the second three-way connection 8 by the 6th pipeline 78, pressure control unit 7 is by Control gas transport unit 1, the gas transmission port of gas transport unit 1 is connected to the air inlet port of cooling gas check valve 2 by pipeline, cooling gas check valve 2 has non-return pressure holding function and ensures that air-channel system force value is controlled and stable, the air outlet of cooling gas check valve 2 is connected to the first port of the first three-way connection 3 by pipeline, test leak detection gas circuit is branched out by the first three-way connection joint 3, balance pressurization gas circuit.
What above-mentioned test leak detection gas circuit was concrete is, the air outlet of standard gas cylinders 4 is connected to the 3rd port of the first three-way connection 3 by the 3rd pipeline 34, second port of the first three-way connection 3 connects one end of the first pipeline 35, first pipeline 35 other end inserts also sealing-in in air-flow display bottle 5, be provided with liquid in described air-flow display bottle 5 and on bottle, have air outlet above liquid, described first pipeline 35 inserts body portion bending in 90 ° and is immersed in the liquid be provided with in air-flow display bottle 5, the air outlet of air-flow display bottle 5 connects one end of the second pipeline 56, the other end of the second pipeline 56 is connected on two position three-way valve 6 one air inlet ports, the air outlet of two position three-way valve 6 is connected to the 3rd port of the second three-way connection 8 by pipeline, this joint second port connects the 5th branch road 89.
What above-mentioned balance pressurization gas circuit was concrete is, one end of the 3rd pipeline 34 is connected by the 3rd port of the first three-way connection 3,3rd pipeline 34 other end connection standard gas tank 4, standard gas cylinders 4 connects the 4th pipeline 46,4th pipeline 46 is connected on another air inlet port of two position three-way valve 6, two position three-way valve 6 outlet side is connected to the second three-way connection 8 the 3rd port by pipeline, and this joint second port connects the 5th branch road the 89, five branch road 89 end and connects tested container 9.
Air-flow display bottle 5 uses high light transmittance ratio glass tank body as shown in Figure 2, and concrete is transmittance is up to 90 ~ 95% glass tank bodies, and be provided with transparency liquid in it, liquid height is lower than the first pipeline and bottle contacting points position.
Composition graphs 1, the course of work of 2 these equipment of specific explanations, reverse two position three-way valve 6 to the 4th pipeline 46 and the 5th gas piping 89, 6th gas piping 78 conducting, by preset pressure value input pressure control module 7, pressure control unit 7 controls gas transport unit 1 after receiving input instruction and carries out gas transmission pressurization, Pneumatic check valve 2 becomes conducting from closed under stream pressure effect, gas flow is through Pneumatic check valve 2, first three-way connection 3 is through the 3rd pipeline 34 Engage of standard gas tank 4, pass through standard gas cylinders 4 again through the 4th pipeline 46, two position three-way valve 6, the 5th pipeline 89 is entered through the second three-way connection 8 shunting, 6th pipeline 78, the gas entering the 5th pipeline 89 is delivered into tested container 9, enter gas storage in the 6th pipeline 78 in pipeline, now standard gas cylinders 4, tested container 9, 6th pipeline 78 pressure is impartial, the 6th pipeline inner pressure recorded and default value compare and feed back to pressure control unit 1 by pressure sensitive module, reach pressure control unit 7 pilot relay power-off after default value, cut off gas transport unit 1 power supply, stop inflating pressure, Pneumatic check valve 2 becomes closed check air-flow from conducting under stream pressure effect, two position three-way valve 6 is reversed to the second pipeline 56 and the 5th gas piping 89, 6th gas piping 78, now standard gas cylinders 4 is isobaric with tested container 9, if there is not leakage in tested container 9, then overall gas circuit is stablized, in air-flow display bottle, bubble-free produces, leak if tested container 9 exists, overall gas circuit there is pressure reduction and standard gas cylinders 4 pressure is greater than tested container 9 pressure, the pressure reduction existed urges gas and moves, gas refluxes through the first three-way connection 3 from standard gas cylinders 4 through the 3rd pipeline 34, first pipeline 35, gas display bottle 5, second pipeline 56, two position three-way valve 6, second three-way connection 8, 5th pipeline 89 flows into tested container 9, when airflow passes gas display bottle 5, because the first pipeline 35 end is immersed in the liquid be provided with in gas display bottle 5, air-flow enters the insoluble generation bubble of liquid, check for external staff observer.
Claims (3)
1. a Portable machine box impermeability leak locator, it is characterized in that: comprise gas transport unit (1), gas transport unit (1) gas transmission port is connected to Pneumatic check valve (2) inlet end by pipeline, and Pneumatic check valve (2) outlet side is connected to the first three-way connection (3) first port by pipeline;
First three-way connection (3) second port connects one end of the first pipeline (35), and the other end of the first pipeline (35) immerses in the liquid be provided with in gas display bottle (5);
Have air outlet above the liquid be provided with in air-flow display bottle (5), air-flow display bottle (5) air outlet is connected to an air inlet port of two position three-way valve (6) by the second pipeline (56);
First three-way connection (3) the 3rd port connects one end of the 3rd pipeline (34), the other end of the 3rd pipeline (34) is connected to the inlet end of standard gas cylinders (4), and standard gas cylinders (4) air outlet is connected to another air inlet port of two position three-way valve (6) by the 4th pipeline (46);
Two position three-way valve (6) outlet side is connected to for the 5th gas piping (89) to tested container conveying gas by pipeline.
2. cabinet impermeability leak locator according to claim 1, it is characterized in that: also comprise pressure control unit (7), wherein pressure control unit (7) signal output part connects gas transport unit (1) signal receiving end by signal wire, the pressure sensitive port of pressure control unit (7) is connected to the first port of the second three-way connection (8) by the 6th pipeline (78), one end of described 5th gas piping (89) is connected to the second port of the second three-way connection (8), the air outlet of described two position three-way valve (6) is connected to the 3rd port of the second three-way connection (8) by pipeline.
3. cabinet impermeability leak locator according to claim 1, is characterized in that: described first pipeline (35) inserts the downward bending in 90 ° of gas display bottle (5) part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410705390.2A CN104359630A (en) | 2014-11-27 | 2014-11-27 | Portable machine box gas tightness leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410705390.2A CN104359630A (en) | 2014-11-27 | 2014-11-27 | Portable machine box gas tightness leak detector |
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| Publication Number | Publication Date |
|---|---|
| CN104359630A true CN104359630A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410705390.2A Pending CN104359630A (en) | 2014-11-27 | 2014-11-27 | Portable machine box gas tightness leak detector |
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| Country | Link |
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| CN (1) | CN104359630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017075897A1 (en) * | 2015-11-06 | 2017-05-11 | 广船国际有限公司 | Negative-pressure airtightness testing apparatus and method |
| CN113405744A (en) * | 2021-06-16 | 2021-09-17 | 重庆科技学院 | Automatic detection system for air tightness of box |
-
2014
- 2014-11-27 CN CN201410705390.2A patent/CN104359630A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017075897A1 (en) * | 2015-11-06 | 2017-05-11 | 广船国际有限公司 | Negative-pressure airtightness testing apparatus and method |
| CN113405744A (en) * | 2021-06-16 | 2021-09-17 | 重庆科技学院 | Automatic detection system for air tightness of box |
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Application publication date: 20150218 |
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| RJ01 | Rejection of invention patent application after publication |