CN110307943A - A kind of sealing automatic checkout system and its detection method - Google Patents
A kind of sealing automatic checkout system and its detection method Download PDFInfo
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- CN110307943A CN110307943A CN201910649451.0A CN201910649451A CN110307943A CN 110307943 A CN110307943 A CN 110307943A CN 201910649451 A CN201910649451 A CN 201910649451A CN 110307943 A CN110307943 A CN 110307943A
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- 238000001514 detection method Methods 0.000 title claims abstract description 98
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 55
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000020509 sex determination Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- Examining Or Testing Airtightness (AREA)
Abstract
The present invention provides a kind of sealing automatic checkout system and its detection methods, including Pressure chamber, positive pressure source and negative pressure source, the positive pressure tracheae of positive pressure source is connected to gas path switching device positive pressure connector, the negative pressure tracheae of negative pressure source is connected to gas path switching device negative pressure connector, the pressure mouth of gas path switching device is connected to gas main, the gas main other end is connected to Pressure chamber pressure intake, Pressure chamber is communicated with several detection branch pipes, on-off control valve is equipped on several detection branch pipes, Pressure chamber is equipped with first pressure sensor, first pressure sensor pressure signal test side connects controller Pressure chamber pressure signal receiving end, negative pressure tracheae is equipped with second pressure sensor, second pressure cell pressure signal detection end connects controller negative pressure pressure signal receiving end, gas path switching device positive/negative-pressure switches controlled end and connects the positive and negative crush-cutting of controller Change control terminal.Multiple samples can be detected simultaneously, and will not be influenced each other between each sample, detected reliable and stable.
Description
Technical field
The present invention relates to measurement detection technique fields, and in particular to a kind of sealing automatic checkout system and its detection method.
Background technique
Air-leakage test is the important method that product hermeticity can determine that, be widely used in automobile, aviation, it is electric,
Multiple industries such as new energy, refrigeration.Sealing propertytest is extremely important, and the tiny loophole of product may result in system cannot be normal
It works, cause system crash, or form huge security risk.
Since air is cheap, pollution-free, readily available, air is used to be made extensively for the air-leakage test of medium
With.In such detection, vertical compression and differential pressure measuring mode are the air that certain pressure is filled in sample to be tested, pass through pressure sensing
Pressure change in device detection a period of time is sealed sex determination.Such detection mode is common in the biggish product of detection
Volume, and when sample small volume, such as the performing leak test of thin footpath conducting wire, sample volume is well below inspection
The resolution of examining system and manifold volume, pressure change has difficulties, meanwhile, leak source can not be accurately identified.Bubble method detection be by
Sample in water is filled with compressed air, and control sample external and internal pressure is different, has seen whether bubble leakage within a certain period of time
Out.This method equipment is simple, can observe directly position and the state of leakage, but the degree of automation is lower, detection efficiency is low, people
It is affected for factor.
In the detection of automobile and other industries product hermeticity, does not require nothing more than and air pressurized gas is implemented to the sample being dipped in liquid
The detection of bubble method also requires the sample being dipped in liquid passing through the constant negative pressure for vacuumizing and maintaining in sample, within a certain period of time
The case where observation liquid enters sample is sealed sex determination.That is, carrying out perseverance in a liquid to the components with seal request
The detection of the positive and negative pressure of constant-pressure and certain time.
Traditional bubble method sealing detection system is generally tested using positive pressure, does not integrate detection of negative pressure function, general
Property is poor.Sample only is passed through to be placed in water after compressed air and observe by some positive seal detection systems, does not supply persistently
The gas source of gas is not able to satisfy in certain time because being influenced by sample and gas-path leakage in detection process and maintains constant pressure
It is required that.Sealing detection system is manually controlled, less reproducible, the stability and reliability of system are unable to get guarantee.In addition, existing
There is sealing detection system to be to provide a sample interface more, easily multiple samples cannot be detected simultaneously, efficiency is lower.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art, a kind of seal certainly is especially innovatively proposed
Dynamic detection system and its detection method, to improve detection efficiency.
In order to realize above-mentioned purpose of the invention, the present invention provides a kind of sealing automatic checkout system, including Pressure chamber,
The positive pressure source of normal pressure is provided for Pressure chamber and provides the negative pressure source of negative pressure, the controlled terminal connection of the positive pressure source for Pressure chamber
The controlled terminal at controller over-pressure control end, the negative pressure source connects controller vacuum cavitations end, the positive pressure tracheae of the positive pressure source
It is connected to gas path switching device positive pressure connector, the negative pressure tracheae of the negative pressure source is connected to gas path switching device negative pressure connector, institute
The pressure mouth connection gas main of gas path switching device is stated, the gas main other end is connected to Pressure chamber pressure intake, the Pressure chamber
Be communicated with several detection branch pipes, be equipped with on-off control valve on several described detection branch pipes, the on-off control valve it is another
One end is sample detection port, and the Pressure chamber is equipped with first pressure sensor, the first pressure sensor pressure signal
Test side connects controller Pressure chamber pressure signal receiving end, and the negative pressure tracheae is equipped with second pressure sensor, and described the
Two pressure sensor pressure signal test sides connect controller negative pressure pressure signal receiving end, the gas path switching device positive/negative-pressure
Switch controlled end and connects controller positive/negative-pressure switching control end.
Positive pressure source is for applying normal pressure into Pressure chamber, and negative pressure source for applying negative pressure into Pressure chamber, cut by gas circuit
Changing device is used to switch positive pressure source, negative pressure source is connected to Pressure chamber, and positive pressure detection and detection of negative pressure are alternately.Detect Zhi Guanyong
In connection sample, on-off control valve is used to control the on-off of sample and Pressure chamber.First pressure sensor is for detecting Pressure chamber
Interior pressure, second pressure sensor are used to detect the pressure on negative pressure tracheae, second pressure sensor and first pressure sensing
The pressure signal of acquisition is sent to controller by device, controller according to the pressure limit accordingly set to positive pressure source and negative pressure source into
Row control is played the role of to provide the positive pressure of certain pressure range or negative pressure and protection positive pressure source and negative pressure source when detection.
In above scheme: the negative pressure tracheae is equipped with negative pressure stable-pressure device, the negative pressure stable-pressure device controlled end connection
Controller negative pressure pressure stabilizing control terminal.Negative pressure stable-pressure device is used for when sample leaks air, and can compensate gas leakage air pressure in time, is examined
Examining system may remain in normal pressure limit, complete detection.
In above scheme: the positive pressure tracheae is equipped with positive pressure stable-pressure device, the positive pressure stable-pressure device controlled end connection
Controller positive pressure pressure stabilizing control terminal.Positive pressure stable-pressure device is used for when pressure release occurs in sample, can be compensated pressure release air pressure in time, be allowed
Detection system may remain in normal pressure limit, complete detection.
In above scheme: the on-off control valve is motor-driven valve, and the on-off controlled end attended operation master of the motor-driven valve
Machine on-off control terminal operates the communication terminal connection controller communication end of host.
In above scheme: several described detection branch pipes are laid in Pressure chamber two sides respectively.
The present invention also provides a kind of sealing automatic testing methods, comprising the following steps:
S1: the sample detection port of sample and Pressure chamber is connected；
S2: sample is placed in detection sink；
S3: setting testing conditions, by operation host according to sample type setup pressure value, retention time and pressure lifting
Speed etc.；
S4: selection positive pressure detection pattern controls gas path switching device by controller and switches to gas main and positive pressure gas
Pipe connection；
S5: controller controls positive pressure source and opens, and positive pressure source applies positive pressure into Pressure chamber；
S6: on-off control valve is opened, sample is connected to Pressure chamber；
S7: the pressure data in Pressure chamber is sent to controller by first pressure sensor, and controller controls positive pressure pressure stabilizing
Device makes Pressure chamber reach setup pressure value by the pressure lifting speed of setting；
S8: carrying out pressure holding according to the pressure value of setting and retention time, while observing sample and have in detection sink
Bubble-free occurs, if there is the number that bubble records corresponding sample；
S9: after pressure hold time reaches, controller by by the pressure lifting speed of setting by the pressure drop in Pressure chamber
To normal pressure；
S10: closing on-off control valve, disconnects sample and is connected to Pressure chamber；
S11: positive pressure detection terminates.
In above scheme: further including detection of negative pressure mode, comprising the following steps:
S12: selection detection of negative pressure mode, controller controls gas path switching device and switches to gas main to be connected with negative pressure tracheae
It is logical；
S13: controller controls negative pressure source and opens, and the pressure data for the negative pressure source that second pressure sensor will test is sent to
Controller controls the pressure of negative pressure source in the range of setting by controller；
S14: on-off control valve is opened, sample to be tested is connected to Pressure chamber；
S15: the pressure data in Pressure chamber is sent to controller by first pressure sensor, and controller controls negative pressure pressure stabilizing
Device makes Pressure chamber reach setup pressure value by the pressure lifting speed of setting；
S16: pressure holding is carried out according to the pressure value of setting and retention time；
S17: after pressure hold time reaches, controller is risen to Pressure chamber pressure often by the pressure lifting speed of setting
Pressure；
S18: closing on-off control valve, and disconnection detection sample is connected to Pressure chamber；
S19: sample is checked, observing and recording sample interior, whether there is or not flooded conditions, and correspondence is recorded if there is flooded condition
The number of sample；
S20: detection of negative pressure terminates.
In above scheme: the on-off control valve is motor-driven valve, the on-off controlled end attended operation host of the motor-driven valve
On-off control terminal opens or closes motor-driven valve by operating host.
In above scheme: the on-off control valve is hand-operated valve, and the hand-operated valve is manually beaten according to detection
On or off is closed.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: the detection of 1, positive and negative pressure is integrated
System；2, can multiple samples simultaneously detected；3, it is not influenced by factors such as sample and gas circuits, system Z can be continuously maintained pressure stabilizing
State；4, the pressure being applied on sample and time are automatically controlled.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is schematic structural view of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As shown in Figure 1, a kind of sealing automatic checkout system, it is based on bubble method hermetization testing method, including Pressure chamber 3, is
Pressure chamber 3 provides the positive pressure source 9 of normal pressure and provides the negative pressure source 10 of negative pressure, the controlled terminal connection of positive pressure source 9 for Pressure chamber 3
The controlled terminal at 11 over-pressure control end of controller, negative pressure source 10 connects 11 vacuum cavitations end of controller, the positive pressure tracheae 12 of positive pressure source 9
It is connected to 4 positive pressure connector of gas path switching device, the negative pressure tracheae 14 of negative pressure source 10 is connected to 4 negative pressure connector of gas path switching device,
The pressure mouth of gas path switching device 4 is connected to gas main 13, and 13 other end of gas main is connected to 3 pressure intake of Pressure chamber, Pressure chamber 3
Several detection branch pipes 15 are communicated with, several detection branch pipes 15 are laid in 3 two sides of Pressure chamber respectively.Several detection branch pipes 15
On be equipped with on-off control valve 2,2 other end of on-off control valve is sample detection port 16.Pressure chamber 3 is passed equipped with first pressure
Sensor 1,1 pressure signal test side of first pressure sensor connect 11 Pressure chamber pressure signal receiving end of controller, negative pressure tracheae
14 are equipped with second pressure sensor 7, and 7 pressure signal test side of second pressure sensor connects 11 negative pressure pressure signal of controller
Receiving end, 4 positive/negative-pressure of gas path switching device switch controlled end and connect 11 positive/negative-pressure switching control end of controller.
Negative pressure tracheae 14 is equipped with negative pressure stable-pressure device 6, and 6 controlled end of negative pressure stable-pressure device connects 11 negative pressure pressure stabilizing of controller
Control terminal.Positive pressure tracheae 12 is equipped with positive pressure stable-pressure device 5, and 5 controlled end of positive pressure stable-pressure device connects 11 positive pressure pressure stabilizing of controller
Control terminal.
On-off control valve is motor-driven valve 2, and the 8 on-off control terminal of on-off controlled end attended operation host of motor-driven valve 2, operation
The communication terminal of host 8 connects 11 communication terminal of controller.
The pressure data for the negative pressure source 10 that second pressure sensor 7 will test is sent to controller 11, passes through controller 11
The pressure of negative pressure source is controlled in the range of setting, in order to the realization of the control pressure of negative pressure stable-pressure device 6.
The present invention also provides a kind of sealing automatic testing methods, comprising the following steps:
S1: sample is connect with the sample detection port 16 of Pressure chamber 3；
S2: sample is placed in detection sink；
S3: setting testing conditions, by operation host 8 according to sample type setup pressure value, retention time and pressure liter
Reduction of speed degree etc.；
S4: selection positive pressure detection pattern, by controller 11 control gas path switching device 4 by gas main 13 switch to just
Air pipe 12 is connected to；
S5: controller 11 controls positive pressure source 9 and opens, and positive pressure source 9 applies positive pressure into Pressure chamber 3；
S6: on-off control valve 2 is opened, sample is connected to Pressure chamber 3；
S7: the pressure data in Pressure chamber 3 is sent to controller 11 by first pressure sensor 1, and controller 11 controls just
Stable-pressure device 5 is pressed so that Pressure chamber 3 is reached setup pressure value by the pressure lifting speed of setting；
S8: carrying out pressure holding according to the pressure value of setting and retention time, while observing sample and have in detection sink
Bubble-free occurs, if there is the number that bubble records corresponding sample；
S9: after pressure hold time reaches, controller 11 by by the pressure lifting speed of setting by the pressure in Pressure chamber 3
It is down to normal pressure；
S10: operation host 8 controls motor-driven valve 2 and closes, and disconnects sample and is connected to Pressure chamber 3；
S11: positive pressure detection terminates.
S12: selection detection of negative pressure mode, controller 11 control gas path switching device 4 and switch to gas main 13 and negative pressure
Tracheae 14 is connected to；
S13: controller 11 controls negative pressure source 10 and opens, the number pressure for the negative pressure source 10 that second pressure sensor 7 will test
According to controller 11 is sent to, the pressure of negative pressure source 10 is controlled in the range of setting by controller 11；
S14: on-off control valve 2 is opened, sample to be tested is connected to Pressure chamber 3；
S15: the pressure data in Pressure chamber 3 is sent to controller 11 by first pressure sensor 1, and the control of controller 11 is negative
Stable-pressure device 6 is pressed so that Pressure chamber 3 is reached setup pressure value by the pressure lifting speed of setting；
S16: pressure holding is carried out according to the pressure value of setting and retention time；
S17: after pressure hold time reaches, controller 11 is risen to 3 pressure of Pressure chamber by the pressure lifting speed of setting
Normal pressure；
S18: operation host 8 controls motor-driven valve 2 and closes, and disconnection detection sample is connected to Pressure chamber 3；
S19: sample is checked, observing and recording sample interior, whether there is or not flooded conditions, and correspondence is recorded if there is flooded condition
The number of sample；
S20: detection of negative pressure terminates.
Preferably, the on-off control valve 2 is motor-driven valve, and the on-off controlled end attended operation host 8 of the motor-driven valve is logical
Disconnected control terminal opens motor-driven valve by operation host 8.If the on-off control valve 2 is hand-operated valve, then the on-off control of hand-operated valve
System according to detection by manually being opened.
The present invention can also be used as single positive pressure detection system or single detection of negative pressure system, wherein being only used as positive pressure detection system
When, implementation steps S1-S11, when being only used as detection of negative pressure system, implementation steps S1-S3 and S12-S20.
It is each to detect sample detection corresponding on branch pipe 15 without influencing each other, if sample is deposited in detection process in the present invention
It is leaked caused by poor sealing, the part gas of leakage can be supplemented by positive pressure stable-pressure device 5 or negative pressure stable-pressure device 6
Therefore pressure, pressure size needed for maintaining detection do not influence the completion of sample detection on other detection branch pipes 15, detection is stablized
Property it is high.
The present invention can provide the testing conditions of positive pressure and negative pressure by gas circuit conversion equipment 4 in same set of detection system,
Meet product from the sealing detection requirement for being just pressed onto vacuum, avoids equipment and interface conversion cumbersome during sample detection.
System can also be used separately as positive pressure or detection of negative pressure equipment.
The present invention is by realizing multiple with multiple sample connectivity ports 16 and the Pressure chamber for being provided with on-off control valve 2
Sample detects simultaneously, and the pressure remained steady of Pressure chamber within the desired time, port number can increase on demand, significantly improve
Flux is detected, the detection of a large amount of samples is especially suitable for.
The present invention contains positive pressure source 9 and negative pressure source 10, sealing detection positive pressure and negative pressure is persistently provided, even if in sample
In the case that poor sealing or signal piping leak, pressure and the time being applied on sample still can be maintained,
Guarantee the reliability and stability of detection.
High degree of automation of the present invention, system automatically control positive/negative pressure switching, 16 on-off of sample detection port, positive/negative-pressure
Source adjusts and is applied to pressure size and the time of Pressure chamber 3 and sample, greatly reduces the influence of human factor, grasps
Make simple, reproducible, detection efficiency height.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (9)
1. a kind of sealing automatic checkout system, it is characterised in that: providing normal pressure just including Pressure chamber (3), for Pressure chamber (3)
Potential source (9) and the negative pressure source (10) of negative pressure is provided for Pressure chamber (3), the controlled terminal of the positive pressure source (9) connects controller
(11) controlled terminal at over-pressure control end, the negative pressure source (10) connects controller (11) vacuum cavitations end, the positive pressure source (9)
Positive pressure tracheae (12) is connected to gas path switching device (4) positive pressure connector, and the negative pressure tracheae (14) of the negative pressure source (10) is connected to gas
The pressure mouth of circuit switching device (4) negative pressure connector, the gas path switching device (4) is connected to gas main (13), gas main (13)
The other end is connected to Pressure chamber (3) pressure intake, and the Pressure chamber (3) is communicated with several detections branch pipe (15), several institutes
It states and is equipped with on-off control valve (2) in detection branch pipe (15), the other end of the on-off control valve (2) is sample detection port
(16), the Pressure chamber (3) is equipped with first pressure sensor (1), first pressure sensor (1) the pressure signal test side
Controller (11) Pressure chamber pressure signal receiving end is connected, the negative pressure tracheae (14) is equipped with second pressure sensor (7), institute
Second pressure sensor (7) pressure signal test side connection controller (11) negative pressure pressure signal receiving end is stated, the gas circuit is cut
Changing device (4) positive/negative-pressure switches controlled end and connects controller (11) positive/negative-pressure switching control end.
2. detection system according to claim 1, it is characterised in that: the negative pressure tracheae (14) fills equipped with negative pressure pressure stabilizing
It sets (6), negative pressure stable-pressure device (6) controlled end connects controller (11) negative pressure pressure stabilizing control terminal.
3. detection system according to claim 1, it is characterised in that: the positive pressure tracheae (12) fills equipped with positive pressure pressure stabilizing
It sets (5), positive pressure stable-pressure device (5) controlled end connects controller (11) positive pressure pressure stabilizing control terminal.
4. a kind of sealing automatic checkout system according to claim 1, it is characterised in that: the on-off control valve (2) is
Motor-driven valve, and on-off controlled end attended operation host (8) on-off control terminal of the motor-driven valve operate the communication terminal of host (8)
Connect controller (11) communication terminal.
5. a kind of sealing automatic checkout system according to claim 3 or 4 any one, it is characterised in that: several institutes
It states detection branch pipe (15) and is laid in Pressure chamber (3) two sides respectively.
6. a kind of sealing automatic testing method, it is characterised in that: the following steps are included:
S1: sample is connect with the sample detection port (16) of Pressure chamber (3)；
S2: sample is placed in detection sink；
S3: setting testing conditions, by operation host (8) according to sample type setup pressure value, retention time and pressure lifting
Speed etc.；
S4: selection positive pressure detection pattern, by controller (11) control gas path switching device (4) by gas main (13) switch to
Positive pressure tracheae (12) connection；
S5: controller (11) controls positive pressure source (9) and opens, and positive pressure source (9) applies positive pressure into Pressure chamber (3)；
S6: it opens on-off control valve (2), sample is connected to Pressure chamber (3)；
S7: the pressure data in Pressure chamber (3) is sent to controller (11) by first pressure sensor (1), controller (11) control
Positive pressure stable-pressure device (5) processed makes Pressure chamber (3) reach setup pressure value by the pressure lifting speed of setting；
S8: carrying out pressure holding according to the pressure value of setting and retention time, while observing sample whether there is or not gas in detection sink
It bubbles out now, if there is the number that bubble records corresponding sample；
S9: after pressure hold time reaches, controller (11) by by the pressure lifting speed of setting by the pressure in Pressure chamber (3)
It is down to normal pressure；
S10: closing on-off control valve (2), disconnects sample and is connected to Pressure chamber (3)；
S11: positive pressure detection terminates.
7. detection method according to claim 6, it is characterised in that: further include detection of negative pressure mode, comprising the following steps:
S12: gas main (13) is switched to and is born by selection detection of negative pressure mode, controller (11) control gas path switching device (4)
Air pipe (14) connection；
S13: controller (11) controls negative pressure source (10) and opens, the pressure for the negative pressure source (10) that second pressure sensor (7) will test
Force data is sent to controller (11), through the pressure of controller (11) control negative pressure source (10) in the range of setting；
S14: it opens on-off control valve (2), sample to be tested is connected to Pressure chamber (3)；
S15: the pressure data in Pressure chamber (3) is sent to controller (11) by first pressure sensor (1), controller (11) control
Negative pressure stable-pressure device (6) processed makes Pressure chamber (3) reach setup pressure value by the pressure lifting speed of setting；
S16: pressure holding is carried out according to the pressure value of setting and retention time；
S17: after pressure hold time reaches, controller (11) is risen to Pressure chamber (3) pressure by the pressure lifting speed of setting
Normal pressure；
S18: closing on-off control valve (2), and disconnection detection sample is connected to Pressure chamber (3)；
S19: checking sample, and observing and recording sample interior, whether there is or not flooded conditions, records if there is flooded condition corresponding tested
The number of sample；
S20: detection of negative pressure terminates.
8. detection method according to claim 6, it is characterised in that: the on-off control valve (2) is motor-driven valve, the electricity
On-off controlled end attended operation host (8) on-off control terminal of dynamic valve opens or closes motor-driven valve by operating host (8).
9. detection method according to claim 6, it is characterised in that: the on-off control valve (2) is hand-operated valve, the hand
Dynamic valve is manually opened or closed according to detection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910649451.0A CN110307943A (en) | 2019-07-18 | 2019-07-18 | A kind of sealing automatic checkout system and its detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910649451.0A CN110307943A (en) | 2019-07-18 | 2019-07-18 | A kind of sealing automatic checkout system and its detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024548A (en) * | 2019-11-28 | 2020-04-17 | 惠州市德赛西威汽车电子股份有限公司 | Air tightness function and ventilation function testing equipment, system and method |
| CN115656787A (en) * | 2022-12-21 | 2023-01-31 | 巨翊医疗科技(苏州)有限公司 | Testing device and method for PCBA with negative pressure sensor and infrared sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266803A (en) * | 2014-10-16 | 2015-01-07 | 歌尔声学股份有限公司 | Airtight detecting system and method |
| CN210005179U (en) * | 2019-07-18 | 2020-01-31 | 上海鉴源检测技术有限公司 | sealed automatic detection system |
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2019
- 2019-07-18 CN CN201910649451.0A patent/CN110307943A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266803A (en) * | 2014-10-16 | 2015-01-07 | 歌尔声学股份有限公司 | Airtight detecting system and method |
| CN210005179U (en) * | 2019-07-18 | 2020-01-31 | 上海鉴源检测技术有限公司 | sealed automatic detection system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024548A (en) * | 2019-11-28 | 2020-04-17 | 惠州市德赛西威汽车电子股份有限公司 | Air tightness function and ventilation function testing equipment, system and method |
| CN115656787A (en) * | 2022-12-21 | 2023-01-31 | 巨翊医疗科技(苏州)有限公司 | Testing device and method for PCBA with negative pressure sensor and infrared sensor |
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