CN203376114U - Built-in positive-negative pressure air source for air tightness leak detector - Google Patents
Built-in positive-negative pressure air source for air tightness leak detector Download PDFInfo
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- CN203376114U CN203376114U CN201320358760.0U CN201320358760U CN203376114U CN 203376114 U CN203376114 U CN 203376114U CN 201320358760 U CN201320358760 U CN 201320358760U CN 203376114 U CN203376114 U CN 203376114U
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Abstract
The utility model relates to a built-in positive-negative pressure air source for an air tightness leak detector. Compared with the prior art, the provided air source enables a detect that a minisized air pump can not provide a negative pressure air source to be overcome. The provided air source comprises a minisized air pump, a two-position three-way electromagnetic positive valve, a two-position three-way electromagnetic negative valve, and a three-way pipe. A first port of the three-way pipe is connected with an exhaust outlet of the minisized air pump by the two-position three-way electromagnetic positive valve; a second port of the three-way pipe is connected with a suction opening of the minisized air pump by the two-position three-way electromagnetic negative valve; a third port of the three-way pipe is connected with an inlet of the air source; and the two-position three-way electromagnetic positive valve and the two-position three-way electromagnetic negative valve are respectively connected with a leak detector controller. With the built-in positive-negative pressure air source, the air source can be installed in a case of the leak detector and positive-negative pressure switching is controlled by a control system arranged in the leak detector; and manual air pipe connection and manual configuration are not required.
Description
Technical field
The utility model relates to airtight leak locator technical field, is a kind of built-in positive/negative-pressure source of the gas for airtight leak locator specifically.
Background technology
When the present sealing workpiece for low-pressure, medium and small volume carries out the hermetic properties leak detection, the principle of differential pressure, vertical compression or flow commonly used is carried out leakage measuring instrumentation.Existing domestic and international leak locator is all external gas source, as the external famous brand names such as the ATEQ of the INNOMATEC of the USON of the U.S., Germany, France and Japanese COSMO are all to obtain low-pressure detection source of the gas with external mesohigh source of the gas by reduction valve.But mesohigh source of the gas volume is larger, use inconvenience, can't adapt to the use under field or special environment condition.Though domestic, also there is the airtight leak detection of low pressure to do low-pressure gas source with external or built-in micro air pump, can not produce negative pressure.How to develop a kind of easy to use, volume is little, can provide the built-in source of the gas of malleation and negative pressure to become urgent problem simultaneously.
The utility model content
The purpose of this utility model is can't provide the negative pressure source of the gas in order to solve micro air pump in prior art, thereby can't adapt to the defect of various need for environments, provides a kind of built-in positive/negative-pressure source of the gas for airtight leak locator to solve the problems referred to above.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of built-in positive/negative-pressure source of the gas for airtight leak locator, it is characterized in that: comprise micro air pump, two-bit triplet electromagnetism positive valve, two-bit triplet electromagnetism negative pressure valve and three-way pipe, the first port of described three-way pipe is connected with the exhausr port of micro air pump through two-bit triplet electromagnetism positive valve, the second port of described three-way pipe is connected with the air entry of described micro air pump through two-bit triplet electromagnetism negative pressure valve, the 3rd port of described three-way pipe is connected with gas source inlet, described two-bit triplet electromagnetism positive valve is connected with the leak locator controller respectively with two-bit triplet electromagnetism negative pressure valve.
Connect sound suppressor on described two-bit triplet electromagnetism positive valve.
Connect air strainer on described two-bit triplet electromagnetism negative pressure valve.
The output pressure of described micro air pump is 1000 kPas, and the flow of described micro air pump is 10 liters of per minutes.
beneficial effect
A kind of built-in positive/negative-pressure source of the gas for airtight leak locator of the present utility model, compared with prior art can provide the positive/negative-pressure source of the gas to leak locator, source of the gas can be contained in the cabinet of leak locator, and the positive/negative-pressure switching is controlled by the control system in leak locator, not trachea and configuration by hand.Operation succinctly, conveniently, reduces volume, adapts to the work that field work and detection reach the detection leak locator of severe and small space and environment.Owing to not using reduction valve, the positive/negative-pressure of generation can directly be done the detection source of the gas, has saved the energy, has improved work efficiency and work quality.
the accompanying drawing explanation
Structural representation when Fig. 1 is the utility model structure generation malleation
Structural representation when Fig. 2 is the utility model structure generation negative pressure
Wherein, 1-micro air pump, 2-exhausr port, 3-air entry, 4-two-bit triplet electromagnetism positive valve, 5-two-bit triplet electromagnetism negative pressure valve, 6-gas source inlet, the airtight leak locator valve plate of 7-, 8-sound suppressor, 9-air strainer, 10-three-way pipe, 11-leak locator controller, the general pneumatic rubber tube of 12-.
Embodiment
For making that architectural feature of the present utility model and the effect reached are had a better understanding and awareness, coordinate detailed explanation in order to preferred embodiment and accompanying drawing, be described as follows:
As shown in Figure 1, a kind of built-in positive/negative-pressure source of the gas for airtight leak locator described in the utility model, comprise micro air pump 1, two-bit triplet electromagnetism positive valve 4, two-bit triplet electromagnetism negative pressure valve 5 and three-way pipe 10, the exhausr port 2 of described micro air pump 1 is connected into three-way pipe 10 through two-bit triplet electromagnetism positive valve 4, the exhausr port 2 of micro air pump 1 is pressurization, and air entry 3 is for vacuumizing.The air entry 3 of described micro air pump 1 is connected into three-way pipe 10 through two-bit triplet electromagnetism negative pressure valve 5.10 3 ports of three-way pipe, one is connected with two-bit triplet electromagnetism positive valve 4, and one is connected with two-bit triplet electromagnetism negative pressure valve 5, and another is connected with the gas source inlet 6 on being arranged on airtight leak locator valve plate 7.Connection between micro air pump 1, two-bit triplet electromagnetism positive valve 4, two-bit triplet electromagnetism negative pressure valve 5 and three-way pipe 10 is connected by general pneumatic rubber tube 12.
Be connected on two-bit triplet electromagnetism positive valve 4 sound suppressor 8 is arranged, for alleviating the noise of two-bit triplet electromagnetism positive valve when pressurizeing.Be connected on two-bit triplet electromagnetism negative pressure valve 5 air strainer 9 is arranged, for when vacuumizing, air being purified, prevent that foreign material from sucking.In order to guarantee result of use, the output pressure that can design micro air pump 1 is 1000 kPas, and the flow of micro air pump 1 is 10 liters of per minutes, and driving power is the 24 volts of power supplys of direct current in leak locator.Two-bit triplet electromagnetism positive valve 4 is connected with controller on leak locator with two-bit triplet electromagnetism negative pressure valve 5, control the open and close of two-bit triplet electromagnetism positive valve 4 and two-bit triplet electromagnetism negative pressure valve 5 with leak locator controller 11, thereby realize the conversion of positive/negative-pressure source of the gas.
During actual the use, as shown in Figure 1, arrow means the direction of air-flow, when needs malleation source of the gas, two-bit triplet electromagnetism positive valve 4 and two-bit triplet electromagnetism negative pressure valve 5 be no power all, now air-breathing from the air strainer 9 of two-bit triplet electromagnetism negative pressure valve 5, after micropump 1 pressurization, after two-bit triplet electromagnetism positive valve 4, to the other end of three-way pipe, connected gas source inlet 6 carries out the input of malleation source of the gas again after air-breathing.As shown in Figure 2, when needs negative pressure source of the gas, the solenoid of two-bit triplet electromagnetism positive valve 4 and two-bit triplet electromagnetism negative pressure valve 5 is all switched on, the negative pressure of extracting out from gas source inlet 6, due to the negative pressure mouth pressure lower than atmospheric pressure, gas source inlet 6 can move towards two-bit triplet electromagnetism negative pressure valve 5, then through after the pressurization of micropump 1 after two-bit triplet electromagnetism positive valve 4, by three-way pipe 10, the negative pressure source of the gas is sent into to gas source inlet 6 equally.
Above demonstration and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and instructions, describe is principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. the built-in positive/negative-pressure source of the gas for airtight leak locator, it is characterized in that: comprise micro air pump (1), two-bit triplet electromagnetism positive valve (4), two-bit triplet electromagnetism negative pressure valve (5) and three-way pipe (10), the first port of described three-way pipe (10) is connected with the exhausr port (2) of micro air pump (1) through two-bit triplet electromagnetism positive valve (4), the second port of described three-way pipe (10) is connected with the air entry (3) of described micro air pump (1) through two-bit triplet electromagnetism negative pressure valve (5), the 3rd port of described three-way pipe (10) is connected with gas source inlet (6), described two-bit triplet electromagnetism positive valve (4) is connected with leak locator controller (11) respectively with two-bit triplet electromagnetism negative pressure valve (5).
2. a kind of built-in positive/negative-pressure source of the gas for airtight leak locator according to claim 1, is characterized in that: the upper sound suppressor (8) that connects of described two-bit triplet electromagnetism positive valve (4).
3. a kind of built-in positive/negative-pressure source of the gas for airtight leak locator according to claim 1, is characterized in that: the upper air strainer (9) that connects of described two-bit triplet electromagnetism negative pressure valve (5).
4. a kind of built-in positive/negative-pressure source of the gas for airtight leak locator according to claim 1, it is characterized in that: the output pressure of described micro air pump (1) is 1000 kPas, the flow of described micro air pump (1) is 10 liters of per minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320358760.0U CN203376114U (en) | 2013-06-21 | 2013-06-21 | Built-in positive-negative pressure air source for air tightness leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320358760.0U CN203376114U (en) | 2013-06-21 | 2013-06-21 | Built-in positive-negative pressure air source for air tightness leak detector |
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| Publication Number | Publication Date |
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| CN203376114U true CN203376114U (en) | 2014-01-01 |
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|---|---|---|---|
| CN201320358760.0U Expired - Fee Related CN203376114U (en) | 2013-06-21 | 2013-06-21 | Built-in positive-negative pressure air source for air tightness leak detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257891A (en) * | 2015-11-09 | 2016-01-20 | 无锡泰格气动技术有限公司 | Dual-pressure valve |
| CN106768649A (en) * | 2016-12-12 | 2017-05-31 | 中国化学工程第三建设有限公司 | A kind of positive and negative pressure test method of steel storage tank |
| CN110759099A (en) * | 2019-11-07 | 2020-02-07 | 哈尔滨联科包装机械有限公司 | A simple negative pressure valve combination and adjustment method |
-
2013
- 2013-06-21 CN CN201320358760.0U patent/CN203376114U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257891A (en) * | 2015-11-09 | 2016-01-20 | 无锡泰格气动技术有限公司 | Dual-pressure valve |
| CN106768649A (en) * | 2016-12-12 | 2017-05-31 | 中国化学工程第三建设有限公司 | A kind of positive and negative pressure test method of steel storage tank |
| CN106768649B (en) * | 2016-12-12 | 2018-12-11 | 中国化学工程第三建设有限公司 | A kind of positive and negative pressure test method of steel storage tank |
| CN110759099A (en) * | 2019-11-07 | 2020-02-07 | 哈尔滨联科包装机械有限公司 | A simple negative pressure valve combination and adjustment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20170621 |