CN208887869U - A kind of automatic air tightness detecting system - Google Patents
A kind of automatic air tightness detecting system Download PDFInfo
- Publication number
- CN208887869U CN208887869U CN201821819421.7U CN201821819421U CN208887869U CN 208887869 U CN208887869 U CN 208887869U CN 201821819421 U CN201821819421 U CN 201821819421U CN 208887869 U CN208887869 U CN 208887869U
- Authority
- CN
- China
- Prior art keywords
- valve
- inlet pipeline
- air inlet
- air
- shut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a kind of automatic air tightness detecting systems, including gas supply module and detection module, the gas output end for supplying module connects the first end of shut-off valve by air inlet pipeline, the second end of shut-off valve connects the detection module by air inlet pipeline, detection module includes pressure regulator valve, electric proportional-regulation valve and tested equipment, the both ends of pressure regulator valve pass through the second end of air inlet pipeline Yu the shut-off valve respectively, the airtight cavity of tested equipment is connected to, electric proportional-regulation valve is additionally provided on air inlet pipeline between pressure regulator valve and tested equipment, the gas sample mouth of tested equipment is provided with differential manometer, the input terminal of differential manometer connection PLC controller, the input/output terminal of the PLC controller connects the electric proportional-regulation valve.Gas input when the utility model is stablized using pressure in measurement tested equipment replaces directly detecting air leakage, and detection mode is simple and convenient, and testing result is accurate.
Description
Technical field
The utility model relates to equipment air-leakage test technical fields, are a kind of automatic air tightness detecting systems specifically.
Background technique
Many compression equipment such as valve, pipeline, connector, pressure vessel etc. are required to carry out airtight performance detection, usually
Confined gas method for testing performance have flow hair and two kinds of pressure decline method, provide people in national people's air defense professional standard RFJ01-2002
The airtight performance test of preventing engineering safeguard uses discharge method, equal using artificial interpreting system or automatic adjustment and interpreting system
Can, however since this detection needs to build special sealed chamber, configure special detection device instrument, it is more difficult to carry out；Pressure drop
Method is that the gas to be detected for sealing indoor filling certain pressure is detected pressure drop rate after generally requiring maintenance 24 hours to differentiate
Seal room whether gas leakage, time-consuming for this method, low efficiency.And traditional manually detection mode operation difficulty is larger, adjusts
React slower, detection efficiency is low, and detection accuracy is affected by artifact, and systematic error is larger.
Utility model content
The purpose of this utility model is to provide a kind of automatic air tightness detecting systems, for solving artificial hand in the prior art
The dynamic detection problem that air-tightness difficulty is big and systematic error is larger.
The utility model is solved the above problems by following technical proposals:
A kind of automatic air tightness detecting system, including gas supply module and detection module, the gas output end of the gas supply module
The first end of shut-off valve is connected by air inlet pipeline, the second end of the shut-off valve connects the detection mould by air inlet pipeline
Block, the detection module include pressure regulator valve, electric proportional-regulation valve and tested equipment, and the both ends of the pressure regulator valve pass through respectively
Air inlet pipeline is connected to the airtight cavity of the second end of the shut-off valve, tested equipment, the pressure regulator valve and tested equipment
Between air inlet pipeline on be additionally provided with electric proportional-regulation valve, the gas sample mouth of the tested equipment is provided with pressure difference
Meter, the input terminal of the differential manometer connection PLC controller, the input/output terminal of the PLC controller connect the electronic ratio
Regulating valve.
It supplies module and the gas of compression is provided, manually adjust pressure regulator valve, stablize admission line pressure, closed is detected
Measurement equipment is filled with gas with the flow set, by PLC controller by the value of reading differential manometer and electric proportional-regulation valve, obtains
Current flow and pressure controls electronic ratio by PLC controller output when the close setting pressure of the pressure in tested equipment
Example regulating valve, gradually decreases the flow of input tested equipment, keeps pressure difference detection value, then input flow rate is quilt at this time
The air leakage of detection device.When pressure is stablized, the gas input flow amount that PLC controller is read is equal to air leakage, therefore reduces
Manually detection difficulty and systematic error.
Further, the gas supply module includes passing sequentially through air pressure pump, oil filter and the storage of air inlet pipeline connection
Gas tank, the output end of the air accumulator are connect with the first end of the shut-off valve by air inlet pipeline, the air accumulator and cut-off
Air gauge is provided on air inlet pipeline between valve.
Oil filter is installed on the air inlet pipeline that the gas delivery port of air pressure pump connects, and by the air inlet of oil filter
Mouth, gas outlet and air inlet pipeline compress, its is made to keep sealing.Air pressure pump is opened, is in system for gaseity, according to gas
The reading for pressing table, manually adjusts pressure regulator valve, stablizes the pressure on air inlet pipeline, i.e., to tested equipment under stable pressure
Seal cavity inputs compressed gas.
Further, check valve is additionally provided on the air inlet pipeline between the oil filter and air accumulator.
Further, the second end of the shut-off valve also passes through air inlet pipeline and is connected with reversal valve, and the reversal valve passes through
Air inlet pipeline is connected with sealing cylinder.
Further, the reversal valve uses two-position four way change valve.
Reversal valve and sealing cylinder form pneumostop module, for discharging gas pressure when detecting and completing.
Further, the PLC controller is also connected with human-computer interaction module.
Gas input flow amount can be set by human-computer interaction module, open testing button, the pressure that display is read and flow,
And show calculated air leakage, and show whether testing result is qualified by indicator light.
The utility model compared with prior art, have the following advantages that and the utility model has the advantages that
The utility model using air be medium, using air pressure pump as pressure source, by closed product to be measured with one
Constant flow is filled with compressed air, and pressure is stepped up in product, and when pressure is gradually close to when reaching setting pressure, adjust automatically is defeated
Inbound traffics stablize pressure in specified value and keep certain time, and the flow value inputted at this time is the air leakage of filter.Using
Gas input when pressure is stablized in tested equipment is measured to replace directly detecting air leakage, detection mode is simple and convenient, and
Testing result is accurate.
Detailed description of the invention
Fig. 1 is the system principle diagram of the utility model；
1- air pressure pump；2- oil filter；3- air accumulator；4- air gauge；5- two-position four way change valve；6- sealing cylinder；
7- pressure regulator valve；8- electric proportional-regulation valve；9- tested equipment；10- differential manometer；11- shut-off valve；12-PLC controller, A- are supplied
Gas module；B- pneumostop module；C- detection module.
Specific embodiment
The utility model is described in further detail below with reference to embodiment, but the embodiments of the present invention is not
It is limited to this.
Embodiment 1:
In conjunction with shown in attached drawing 1, a kind of automatic air tightness detecting system, including gas supply modules A and detection module C, the gas supply
The gas output end of modules A connects the first end of shut-off valve 11 by air inlet pipeline, the second end of the shut-off valve 11 by into
Air pipe connects the detection module C, and the detection module C includes pressure regulator valve 7, electric proportional-regulation valve 8 and tested equipment
9, the both ends of the pressure regulator valve 7 pass through the second end of air inlet pipeline and the shut-off valve 11, the closed chamber of tested equipment 9 respectively
Body is connected to, and is additionally provided with electric proportional-regulation valve 8, the quilt on the air inlet pipeline between the pressure regulator valve 7 and tested equipment 9
The gas sample mouth of detection device 9 is provided with differential manometer 10, and the differential manometer 10 connects the input terminal of PLC controller, the PLC
The input/output terminal of controller connects the electric proportional-regulation valve 8；The gas supply modules A includes passing sequentially through air inlet pipeline company
The first end of air pressure pump 1, oil filter 2 and the air accumulator 3 connect, the output end of the air accumulator 3 and the shut-off valve 11 is logical
Air inlet pipeline connection is crossed, is provided with air gauge 4 on the air inlet pipeline between the air accumulator 3 and shut-off valve 11.
Oil filter 2 is installed on the air inlet pipeline that the gas delivery port of air pressure pump 1 connects, and by oil filter 2 into
Port, gas outlet and air inlet pipeline compress, it is made to keep sealing.Air pressure pump 1 is opened, is in system for gaseity, root
According to the reading of air gauge 4, pressure regulator valve 7 is manually adjusted, stablizes the pressure on air inlet pipeline, i.e., to detected under stable pressure
The seal cavity of equipment 9 inputs compressed gas, by PLC controller 12 by reading differential manometer 10 and electric proportional-regulation valve 8
Value, obtains current flow and pressure, when the close setting pressure of the pressure in tested equipment 9, is exported by PLC controller 12
It controls electric proportional-regulation valve 8, gradually decreases the flow of input tested equipment 9, keep pressure difference detection value, then it is defeated at this time
Inbound traffics are the air leakage of tested equipment 9.When pressure is stablized, the gas input flow amount that PLC controller 12 is read is equal to
Air leakage, therefore reduce manually detection difficulty and systematic error.
Further, it is additionally provided with check valve on the air inlet pipeline between the oil filter 2 and air accumulator 3, guarantees compression
Air flow in one direction.
Further, the second end of the shut-off valve 11 also passes through air inlet pipeline and is connected with two-position four way change valve 5, described
Two-position four way change valve 5 is connected with sealing cylinder 6 by air inlet pipeline.
Two-position four way change valve 5 and sealing cylinder 6 form pneumostop module B, for discharging gas when detecting and completing
Pressure.
Further, the PLC controller 12 is also connected with human-computer interaction module.
Gas input flow amount can be set by human-computer interaction module, open testing button, the pressure that display is read and flow,
And show calculated air leakage, and show whether testing result is qualified by indicator light.
Concrete operations process is as follows:
On the pipeline that the gas delivery port of air compressor connects, oil filter 2 is installed, compresses the air inlet of oil filter 2
And air outlet, make its sealing；
Air compressor is opened, keeps system to be in for gaseity, reads the reading of pressure gauge, it is ensured that pressure gauge reading exists
Between 0.4MPa~0.8MPa；
Turn pressure regulator valve 7 makes its reading in 0.3MPa~0.4MPa, interior, and pressure is kept to stablize；
It is set on human-computer interaction module and compressed gas is inputted to tested equipment 9 with the flow velocity of 30L/min, pressed man-machine
Testing button in interactive module, system execute test program automatically；
The pressure value that differential manometer 10 is shown gradually rises, and PLC controller 12 reads pressure value, when pressure is raised to 2900Pa
When, PLC controller 12 controls the tonicity of electric proportional-regulation valve 8, makes to gradually reduce aeration quantity；
When the stable reading of differential manometer 10 is between 2940-3000Pa, flow of aerating air is gradually stable in certain flow,
Pressure maintaining timing 2min after stablizing 30 seconds；
PLC controller 12 reads flow of aerating air from electric proportional-regulation valve 8, the number that electric proportional-regulation valve 8 is shown at this time
Value is the air leakage of tested equipment 9, and judges: flow of aerating air is less than 16.667L/min and determines that product qualification, qualification refer to
Show that lamp lights, sealing cylinder 6 lifts automatically, and product is offline, and test terminates.
Although reference be made herein to the utility model is described in the explanatory embodiment of the utility model, above-described embodiment
The only preferable embodiment of the utility model, the embodiments of the present invention are simultaneously not restricted to the described embodiments, it should
Understand, those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will be fallen
Within scope and spirit disclosed in the present application.
Claims (6)
1. a kind of automatic air tightness detecting system, which is characterized in that including gas supply module and detection module, the gas of the gas supply module
Body output end connects the first end of shut-off valve by air inlet pipeline, and the second end of the shut-off valve passes through described in air inlet pipeline connection
Detection module, the detection module include pressure regulator valve, electric proportional-regulation valve and tested equipment, the both ends point of the pressure regulator valve
Not Tong Guo air inlet pipeline be connected to the airtight cavity of the second end of the shut-off valve, tested equipment, the pressure regulator valve and tested
Electric proportional-regulation valve is additionally provided on air inlet pipeline between measurement equipment, the gas sample mouth of the tested equipment is provided with
The input/output terminal connection of differential manometer, the input terminal of the differential manometer connection PLC controller, the PLC controller is described electronic
Ratio adjusting valve.
2. a kind of automatic air tightness detecting system according to claim 1, which is characterized in that the gas supply module includes successively
Air pressure pump, oil filter and the air accumulator connected by air inlet pipeline, the output end of the air accumulator and the shut-off valve
First end is connected by air inlet pipeline, is provided with air gauge on the air inlet pipeline between the air accumulator and shut-off valve.
3. a kind of automatic air tightness detecting system according to claim 2, which is characterized in that the oil filter and air accumulator it
Between air inlet pipeline on be additionally provided with check valve.
4. a kind of automatic air tightness detecting system according to claim 1, which is characterized in that the second end of the shut-off valve is also
It is connected with reversal valve by air inlet pipeline, the reversal valve is connected with sealing cylinder by air inlet pipeline.
5. a kind of automatic air tightness detecting system according to claim 4, which is characterized in that the reversal valve uses two four
Logical reversal valve.
6. a kind of automatic air tightness detecting system described in any one of -5 according to claim 1, which is characterized in that the PLC
Controller is also connected with human-computer interaction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819421.7U CN208887869U (en) | 2018-11-06 | 2018-11-06 | A kind of automatic air tightness detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819421.7U CN208887869U (en) | 2018-11-06 | 2018-11-06 | A kind of automatic air tightness detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208887869U true CN208887869U (en) | 2019-05-21 |
Family
ID=66517904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821819421.7U Active CN208887869U (en) | 2018-11-06 | 2018-11-06 | A kind of automatic air tightness detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208887869U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285938A (en) * | 2019-07-09 | 2019-09-27 | 劳士领汽车配件（昆山）有限公司 | Plastics weldment airtightness measurement device and its measurement method |
| CN111521349A (en) * | 2020-04-21 | 2020-08-11 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
| CN113916309A (en) * | 2021-11-03 | 2022-01-11 | 中船黄埔文冲船舶有限公司 | Air leakage detection device for ship and use method thereof |
-
2018
- 2018-11-06 CN CN201821819421.7U patent/CN208887869U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285938A (en) * | 2019-07-09 | 2019-09-27 | 劳士领汽车配件（昆山）有限公司 | Plastics weldment airtightness measurement device and its measurement method |
| CN111521349A (en) * | 2020-04-21 | 2020-08-11 | 博众精工科技股份有限公司 | Inflation and deflation control method, device and system, electronic equipment and medium |
| CN113916309A (en) * | 2021-11-03 | 2022-01-11 | 中船黄埔文冲船舶有限公司 | Air leakage detection device for ship and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208887869U (en) | A kind of automatic air tightness detecting system | |
| CN202471374U (en) | Multifunctional airtightness detection apparatus | |
| CN202994396U (en) | Air tightness detection device for air-tight door of nuclear power station under constant pressure | |
| CN209166762U (en) | A kind of air-tightness detection device | |
| CN205483454U (en) | Car car light gas tightness test equipment | |
| CN204964153U (en) | Carbon slide gas tightness detects platform | |
| CN106525358A (en) | Valve pressure testing system and method | |
| CN206019960U (en) | Lift non-return valve work seal detection means | |
| CN108488630A (en) | Experimental device for measuring leakage characteristic of gas pipeline and measuring method thereof | |
| CN115655599A (en) | Hydrogen-doped connection sealing element leakage detection and fatigue integrated experimental device and method | |
| CN110320146A (en) | A kind of concrete air permeability apparatus and measuring method | |
| CN109916568A (en) | Electric machine controller sealing propertytest system, device and method | |
| CN203688152U (en) | Novel gas pressure reducer verifying device | |
| CN210036906U (en) | Negative pressure source device and gas meter verification gas circuit system | |
| CN110726547A (en) | Portable comprehensive checking device for pressure protection device | |
| CN214887619U (en) | Water pump test system | |
| CN216050553U (en) | Three-cavity simultaneous blow-by detection device for whole fuel cell vehicle | |
| CN205958196U (en) | Gas table cuts off leakproofness detection device | |
| CN104502039A (en) | Gas tightness detecting method for fuel gas meter | |
| CN208579154U (en) | Experimental device for measuring leakage characteristics of gas pipeline | |
| CN210802818U (en) | Gas leakage detection device | |
| CN209354723U (en) | For detecting the pneumatic pressure transmitter of highly pressurised liquid | |
| CN207779614U (en) | Full-automatic pressure reducer calibrating installation | |
| CN210343670U (en) | Automatic air tightness detection device of water pump | |
| CN208420312U (en) | A kind of tightness test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |