CN107490459B - A kind of ventilating control method of air-leakage detector detection seal products - Google Patents
A kind of ventilating control method of air-leakage detector detection seal products Download PDFInfo
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- CN107490459B CN107490459B CN201710928361.6A CN201710928361A CN107490459B CN 107490459 B CN107490459 B CN 107490459B CN 201710928361 A CN201710928361 A CN 201710928361A CN 107490459 B CN107490459 B CN 107490459B
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- air inlet
- exhaust valve
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- 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
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of ventilating control methods of air-leakage detector detection seal products, including gas source, the gas source is connected with filter by pipeline, the filter is connected with pressure regulator valve by pipeline, the pressure regulator valve is connected with the first air inlet and exhaust valve by pipeline, first air inlet and exhaust valve is connected with the second air inlet and exhaust valve by pipeline, second air inlet and exhaust valve is connected with third air inlet and exhaust valve by pipeline, third air inlet and exhaust valve is connected with seal closure by pipeline, and test article is equipped in seal closure, pressure sensor is installed on pipeline between seal closure and third air inlet and exhaust valve, gas replenishment process, first air inlet and exhaust valve, second air inlet and exhaust valve and third air inlet and exhaust valve, it opens simultaneously, after inflationtime arrives, first air inlet and exhaust valve, second air inlet and exhaust valve and third air inlet and exhaust valve simultaneously close off, complete gas replenishment process.The blowing pressure adjustable range of the invention is bigger, and the volume range for being applicable in test product is bigger.
Description
Technical field
The present invention relates to air-leakage detector technical fields more particularly to a kind of air-leakage detector to detect seal products
Ventilating control method.
Background technique
Our air-leakage detector has direct press type leak detector and differential leak detector at present.
Testing process is inflation, is balanced, and detection is vented a process.Wherein equilibration time section is testing product gross leak mistake
Journey.In equilibration time section, if test pressure is lower than setting value, alarm indication is gross leak if instrument, skip detection process, directly
Run in gas.If equilibration time section tests pressure qualification, into testing process, minute leakage is detected.
The product type of detection has fenestration products and seal products.
Detection opening product is then to detect seal closure 7 by being inflated to setting test pressure toward seal closure 7 after pressure reducing valve
Pressure change determines whether product leaks.
Detection seal products are to need seal products to be put into test inside seal case, using being filled with certain volume
Gas procedure inflation reach the test pressure of setting.Then 7 pressure change of seal closure is detected to determine whether product leaks.This
What kind was filled with the airing form of certain volume gas is surveyed under the gross leak state and not leakage state that can detecte out seal products
The difference of pressure testing power.Existing inflation method has 2 kinds of inflation methods of pot type and air-cylinder type.
Pot type airing form is the gas by being filled with certain pressure after pressure reducing valve toward jar the inside, as shown in Figure 1, then
The gas inside jar is filled with seal closure 7 again.This airing form is to change the gentle tank volume size of pressure regulator valve pressure to adjust
Save the blowing pressure.This method is suitble to the seal products of general volume to test, and is not suitable for the seal products test of micro volume,
Because tank and seal closure 7 connect, 7 volume of seal closure is increased, 7 volume of seal closure increases, and reduces test pressure resolution.
Air-cylinder type inflation method inflates the test pressure for reaching setting using cylinder moving (syringe principle) toward seal closure 7
Power, as shown in Fig. 2, this airing form is to change cylinder size or adjust cylinder stroke to adjust the blowing pressure.This side
Method is suitble to seal products small in size to test.The disadvantage is that adjustment test pressure needs to adjust cylinder size or cylinder stroke, adjust
Press cumbersome.
For this purpose, the present invention proposes a kind of ventilating control method of air-leakage detector detection seal products, it is existing for solving
There is the deficiency of technology.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of air-leakage detector inspection proposed
Survey the ventilating control method of seal products.
To achieve the goals above, present invention employs following technical solutions:
A kind of ventilating control method of air-leakage detector detection seal products, including gas source, the gas source pass through pipeline
It is connected with filter, the filter is connected with pressure regulator valve by pipeline, and the pressure regulator valve is connected with first into row by pipeline
Air valve, first air inlet and exhaust valve is connected with the second air inlet and exhaust valve by pipeline, and passes through pipe at the both ends of the second air inlet and exhaust valve
Road is connected with throttle valve, and the second air inlet and exhaust valve is connected with third air inlet and exhaust valve by pipeline, and third air inlet and exhaust valve is connected by pipeline
It is connected to seal closure, and is equipped with seal products to be detected in seal closure, the pipeline between seal closure and third air inlet and exhaust valve
On pressure sensor is installed；
Its control method includes the following steps,
S1, adjusts pressure regulator valve, and pressure regulator valve output pressure has to be higher than test pressure；
S2 adjusts throttle valve gas flow size, and the flow small in size of seal closure 7 is turned down, and volume big flow tunes up；
S3 adjusts inflationtime, and the time tune small in size of seal closure 7 is short, and the big time tune of volume is long；
S4, gas replenishment process, the first air inlet and exhaust valve, the second air inlet and exhaust valve and third air inlet and exhaust valve are opened simultaneously, inflationtime
After arriving, the first air inlet and exhaust valve, the second air inlet and exhaust valve and third air inlet and exhaust valve are simultaneously closed off, and complete gas replenishment process；
S5, adjustment test pressure, repeated inflation process adjust pressure regulator valve or throttle valve or inflationtime, to be adjusted to need
The test pressure wanted.
Preferably, the exhaust end of first air inlet and exhaust valve is connected with silencer.
In the present invention, compared with prior art, the blowing pressure adjustable range of the invention is bigger, is applicable in the body of test product
Product range is bigger.Effect of the invention is to detect seal products for air-leakage detector to provide a kind of ventilating control method.It can
Adjustment seal closure 7 is filled with the test pressure of needs, and can distinguish that leakage is completely closed product and No leakage is closed
The test pressure of product is different, and fenestration products seal products can be tested.
Detailed description of the invention
Fig. 1 is the inflation method of pot type in the prior art；
Fig. 2 is the inflation method of air-cylinder type in the prior art；
Fig. 3 is a kind of pneumatic diagram of the ventilating control method of air-leakage detector detection seal products in the present invention；
Fig. 4 detects to be detected closed in the ventilating control method of seal products for air-leakage detector a kind of in the present invention
The detection schematic diagram of product.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.
Referring to Fig. 3-4, a kind of ventilating control method of air-leakage detector detection seal products, including gas source 1, the gas
Source 1 is connected with filter 2 by pipeline, and the filter 2 is connected with pressure regulator valve 3 by pipeline, and the pressure regulator valve passes through pipeline
Be connected with the first air inlet and exhaust valve 4, first air inlet and exhaust valve 4 is connected with the second air inlet and exhaust valve 10 by pipeline, and second into
The both ends of exhaust valve 10 are connected with throttle valve 5 by pipeline, and the second air inlet and exhaust valve 10 is connected with third air inlet and exhaust valve by pipeline
11, third air inlet and exhaust valve 11 is connected with seal closure 7 by pipeline, and seal products 8 to be detected are equipped in seal closure 7,
Pressure sensor 6 is installed on the pipeline between seal closure 7 and third air inlet and exhaust valve 11；
Its control method includes the following steps,
S1, adjusts pressure regulator valve 3, and 3 output pressure of pressure regulator valve has to be higher than test pressure；
S2 adjusts 5 gas flow size of throttle valve, and the flow small in size of seal closure 7 is turned down, and volume big flow tunes up；
S3 adjusts inflationtime, and the time tune small in size of seal closure 7 is short, and the big time tune of volume is long；
S4, gas replenishment process, the first air inlet and exhaust valve 4, the second air inlet and exhaust valve 10 and third air inlet and exhaust valve 11 are opened simultaneously, inflation
After time arrives, the first air inlet and exhaust valve 4, the second air inlet and exhaust valve 10 and third air inlet and exhaust valve 11 are simultaneously closed off, and complete gas replenishment process；
S5, adjustment test pressure, repeated inflation process adjust pressure regulator valve 3 or throttle valve 5 or inflationtime, to be adjusted to
The test pressure needed.
In the present invention, the exhaust end of first air inlet and exhaust valve 4 is connected with silencer 9, and the blowing pressure of the invention is adjusted
Range is bigger, and the volume range for being applicable in test product is bigger.Effect of the invention is to detect seal products for air-leakage detector
A kind of ventilating control method is provided.The test pressure that seal closure 7 is filled with needs can be adjusted, and leakage can have been distinguished
It is different with the test pressure of No leakage seal products to be completely closed product, fenestration products seal products can be tested.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of ventilating control method of air-leakage detector detection seal products, including gas source (1), which is characterized in that described
Gas source (1) is connected with filter (2) by pipeline, and the filter (2) is connected with pressure regulator valve (3), the pressure regulation by pipeline
Valve is connected with the first air inlet and exhaust valve (4) by pipeline, and first air inlet and exhaust valve (4) is connected with the second air inlet and exhaust valve by pipeline
(10), throttle valve (5) and at the both ends of the second air inlet and exhaust valve (10) are connected with by pipeline, the second air inlet and exhaust valve (10) passes through pipe
Road is connected with third air inlet and exhaust valve (11), and third air inlet and exhaust valve (11) is connected with seal closure (7) by pipeline, and in seal closure
(7) seal products to be detected (8) are equipped in, are equipped on the pipeline between seal closure (7) and third air inlet and exhaust valve (11)
Pressure sensor (6)；
Its control method includes the following steps,
S1 is adjusted pressure regulator valve (3), and pressure regulator valve (3) output pressure has to be higher than test pressure；
S2 adjusts throttle valve (5) gas flow size, and seal closure (7) flow small in size is turned down, and volume big flow tunes up；
S3 adjusts inflationtime, and seal closure (7) time tune small in size is short, and the big time tune of volume is long；
S4, gas replenishment process, the first air inlet and exhaust valve (4), the second air inlet and exhaust valve (10) and third air inlet and exhaust valve (11) are opened simultaneously, are filled
After the gas time arrives, the first air inlet and exhaust valve (4), the second air inlet and exhaust valve (10) and third air inlet and exhaust valve (11) are simultaneously closed off, and complete to fill
Gas process；
S5, adjustment test pressure, repeated inflation process adjust pressure regulator valve (3) or throttle valve (5) or inflationtime, to be adjusted to
The test pressure needed.
2. a kind of ventilating control method of air-leakage detector detection seal products according to claim 1, feature exist
In the exhaust end of first air inlet and exhaust valve (4) is connected with silencer (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710928361.6A CN107490459B (en) | 2017-10-09 | 2017-10-09 | A kind of ventilating control method of air-leakage detector detection seal products |
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|---|---|---|---|
| CN201710928361.6A CN107490459B (en) | 2017-10-09 | 2017-10-09 | A kind of ventilating control method of air-leakage detector detection seal products |
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| CN107490459A CN107490459A (en) | 2017-12-19 |
| CN107490459B true CN107490459B (en) | 2019-06-07 |
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| CN108375458A (en) * | 2018-03-21 | 2018-08-07 | 重庆安木科技有限公司 | A kind of air-leakage test instrument |
| CN109632203A (en) * | 2018-11-16 | 2019-04-16 | 嘉兴学院 | A kind of high-precision air tightness leakage detection apparatus and method |
| CN115301580B (en) * | 2022-10-11 | 2023-01-10 | 常州龙灏医疗科技有限公司 | Syringe leakproofness detection device |
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| CN201133863Y (en) * | 2007-12-11 | 2008-10-15 | 上海西门子移动通信有限公司 | Gas-tight seal measuring apparatus |
| CN101281079A (en) * | 2008-05-12 | 2008-10-08 | 北京理工大学 | Method and system for detecting and positioning leakage based on infrared imaging technique |
| CN201207013Y (en) * | 2008-05-13 | 2009-03-11 | 重庆宗申技术开发研究有限公司 | Detecting machine for airtightness of oil tank |
| CN102072802B (en) * | 2009-11-23 | 2013-03-13 | 付佳 | Intelligent constant-voltage high-precision leak detector |
| JP6015261B2 (en) * | 2012-09-11 | 2016-10-26 | トヨタ自動車株式会社 | Gas filling device and gas filling method |
| CN203275038U (en) * | 2013-05-06 | 2013-11-06 | 江苏出入境检验检疫局轻工产品与儿童用品检测中心 | Integrated safety tester for pen type stationery products |
| CN203502181U (en) * | 2013-10-21 | 2014-03-26 | 杭州诺航科技有限公司 | Sealing property detection device for marking pen |
| CN105547608A (en) * | 2014-11-03 | 2016-05-04 | 中国飞行试验研究院 | Apparatus for air tightness testing of airplane |
| CN105258867A (en) * | 2015-09-22 | 2016-01-20 | 航天科工防御技术研究试验中心 | Gas tightness detection system |
| CN106768704B (en) * | 2016-12-22 | 2023-07-21 | 青岛杰瑞工控技术有限公司 | Mobile air tightness detection device and method for overhauling train of motor train unit |
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