CN104165735B - A kind of gas cylinder air-tight test complexes - Google Patents
A kind of gas cylinder air-tight test complexes Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 160
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000003556 assay Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 38
- 230000008569 process Effects 0.000 claims description 14
- 230000002950 deficient Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 78
- 238000007689 inspection Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010998 test method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000000691 measurement method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- 238000012800 visualization Methods 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Gas cylinder air-tight bottle test complexes, including assay device, data acquisition unit, long distance control system, described assay device includes gas compressor, inflation supervisor, inflation arm, detection pond and conveyer belt, inflation supervisor be connected with gas compressor steam vent, and inflation tube side-by-side is vertically connected with inflation supervisor；Described data acquisition unit includes pressure transducer, pressure transmitter, industry photographic head, camera bracket and collection all-in-one, gather all-in-one built-in mould analog quantity acquisition module and industrial computer, pressure transducer uses welding manner to be arranged on inflation supervisor, analogue collection module uses serial communication with industrial computer, pressure transducer is connected with pressure transmitter, pressure transmitter is connected with the analogue collection module gathered in all-in-one, industry photographic head is connected with the industrial computer gathered in all-in-one, industrial computer onboard data monitoring of software；Long distance control system includes remote server and prison inspection software platform, and remote server is connected by network with gathering all-in-one, and prison inspection software platform is disposed on the remote server.
Description
Technical field
The present invention relates to a kind of gas cylinder air-tight test complexes, particularly relate to utilize computer to regard
Feel, gas cylinder is used bowssening to carry out the complexes of air-tight test by sensor technology.
Background technology
In recent years, gas cylinder manufacturing enterprise increases year by year, and gas cylinder yield the most constantly increases, in order to improve
Detection checkability in process of production, domestic and international researcher, engineer develop various respectively
The detection checking system of sample, equipment or device each test stage in gas cylinder production process,
Such as online hardness determination system, online ultrasonic testing system, hydraulic pressure outside measurement method test system of automatization
Systems etc., these systems or device reduce the human factor impact on testing result, effectively carry
High detection efficiency, accuracy rate also reduce production cost.
Gas cylinder is often referred to seamless steel gas cylinder, welded gas cylinder, aluminium alloy seamless gas cylinder and winding gas cylinder,
Its test mainly includes the water pressure test and two kinds of methods of air-tight test.The water pressure test generally uses
The method that national standard " GB/T9251-2011 gas cylinder by hydrostatic pressure test method " is described is carried out,
Including outside measurement method (water jacket algoscopy) and internal test method (direct expansion method), it is mainly used in measuring gas
Volume variation (the volume after elastic volumetric expansion and release that bottle produces under hydraulic test pressure
Residual deformation).Air-tight test the most generally uses national standard " GB/T12137-2002 gas cylinder
Airtightness testing method " method that described carries out, including bowssening and masking liquid method, bowssening
Refer to be filled with being immersed in tank to check its bubble-tight test by trial jar of authorized pressure gas
Method, it is applicable to or the air-tight test of part overall by trial jar, and masking liquid method refers to
It is filled with on the position to be checked by trial jar of authorized pressure gas and is coated with inspection liquid, to check gas at this
The test method of close property, it be applicable to by trial jar cylinder valve threaded connection place, cylinder valve valve rod, bottle
Valve side mouth, fusible plug or the air-tight test at other positions of gas cylinder.
Experts and scholars expand with device mainly for the correlation technique of the water pressure test the most both at home and abroad
Primary study, as the U.S. as gas cylinder manufacturing country maximum in the world and uses state, its gas cylinder water
Compression testing device represents the level of development of current bottle hydraulic pressure testing device, after the nineties,
Part producing producer have developed computer-controlled bottle hydraulic pressure testing device.China's gas cylinder hydraulic pressure
The development of assay device lags behind gas cylinder development always, along with the development of information technology, domestic also
Start the development of Automated water compression testing device.Zhao Zhigang (East China University of Science, 2008)
Year analyzes present situation and the feature of domestic and international bottle hydraulic pressure testing device, by GB/T9251-1997
" gas cylinder by hydrostatic pressure test method ", GB15385-94 " gas cylinder hydraulic bursting test method " and
The related request of CGAC-1 " hydraulic test method of compressed gas gas cylinder " develops a set of meter
The gas cylinder outside measurement method of calculation machine control and explosion bulge test device, this device devises with computer control
With the gas cylinder outside measurement method that signals collecting is core and explosion water test unit, have employed upper meter
Calculation machine and the next PLC realize distributed two-step evolution mode, utilize VB6.0 at WindowsXP
A set of OO visualization data acquisition software is developed, it is achieved that pressure is believed on platform
Number, the collection of water yield signal, show and process, and the generation of water pressure test report, amendment
With output.Yellow hat worn by a Taoist priest space (East China University of Science, 2008) etc. develop based on
The high-pressure bottle water pressure test radio short network communication system of IEEE802.15.4/ZigBee technology
System, mainly achieves the short-distance radio collection of on-the-spot water pressure test related data.Zhu Jiahua (China
East Polytechnics, 2011) etc. to bottle hydraulic pressure testing device based on machine vision technique launch
Research, this device is based primarily upon the change in volume that image method detection gas cylinder produces due to pressure,
Measurement process is that dry type is measured and contactless.Yang Xiaoxin (Xinjiang University, 2011) etc. design also
Develop steel bottle filled with compressed natural gas water pressure test monitoring system based on configuration software MCGS, real
The collection of steel bottle filled with compressed natural gas water pressure test field data, man machine interface, real time process flow are showed
Animation shows, in real time and the function such as historical data show, report output, it is to avoid in hydraulic pressure examination
Test the substantial amounts of manual operation at scene, reduce labor intensity and the danger of detection of detection workman
Property, improve detection efficiency.Mu Xiaoge (Xinjiang University, 2011) etc. develops steel cylinder hydraulic pressure
Experimental examination datamation acquisition system, is mainly used in Real-time Collection inspection pressure, temperature etc.
Data.The development of above-mentioned automation equipment, greatly reduces on-site manual operation, reduces water
The risk factor of pressure test and working strength, improve detection work efficiency, saved gas cylinder detection
Time, thus reduce the inconvenience that gas cylinder periodic inspection brings, simultaneously manually fill in a form loaded down with trivial details and
Error, decreases the workload arranging assay and preserving, and testing result is with symbol
The database table closing industry standard specification stores, and information memory capacity is greatly increased.
Air-tight test is entirely different with detection project with the ultimate principle of the water pressure test, therefore, on
State automaton in air-tight test and inapplicable.Domestic at air-tight test automation equipment
Research aspect also makes some progress.Wang Weijun (Shanghai University, 2008) is (a kind of novel
Airtight test device [J]. machine design and manufacture, 2008 (5): 196-198) etc. exploitation
A kind of novel airtight test device, uses PLC to control Self-pressurizing agri and according to pressure sensing
Device detect little air chamber pressure change automatically judge whether gas leakage, for gas leakage by trial jar then
Trigger photographic head to take pictures, be a kind of direct press type detection method.Yuan Hailin is (based on PLC control
Airtight signal detecting system design with realize [D].Chengdu: Chengdu University of Technology, 2013)
Develop a set of direct press type air tightness detection system equally.Wu Chunlong (gas based on machine vision
The detection device research of close property and design [D].Hangzhou: Institutes Of Technology Of Zhejiang, 2013) design and develop
A set of tightness test device for air compressor's bottle, substantially bowssening, gas therein
Bubble detection uses the method for computer vision to carry out.
The air-tight test of current domestic overwhelming majority gas cylinder manufacturer still uses traditional immersion
Method, this method is simple to operate, low cost, but, it also exists clearly disadvantageous, first,
Manufacturer's process of the test generally uses agreement by piece, and workman takes remuneration often few inspection or leakage in order to more
, simultaneously in order to reduce cost, there is test pressure during air-tight test and do not reach standard-required in inspection
Or the situation that the dwell time is not enough, exist and cause security-hidden trouble, for avoiding this situation
Occurring, current common practice is the inspection of prison in factory, i.e. by special equipment inspection body to gas cylinder
Prison inspection generally uses to patrol and examine in production scene and carries out with the mode inspected by random samples, and is providing survey report
Time be difficult to check the situation of few inspection and missing inspection.Gas cylinder air-tight test is generally in manufacturer voluntarily
Implement, special equipment inspection body carry out supervision and inspection.The reasons for the above problems are just
Current automatic detection device is independent system, lack in production process relevant parameter from
Dynamic collection and the effective supervision to anthropic factor.
In view of the importance of gas cylinder air-tight test and in order to solve asking of above-mentioned prison inspection process existence
Topic, based on computer vision gas cylinder air-tight test complexes a kind of with sensor technology invention,
Not only facilitate the checkability improving enterprise and the quality safety ensureing steel cylinder, it is achieved prison inspection
Wisdom, and contribute to reduction gas cylinder and produce prison inspection cost and improve special equipment production prison
Inspection efficiency and level, have important popularization demonstration effect for implementing special equipment wisdom prison cubing.
Summary of the invention
Few leak detection inspection, understressed etc. cannot be supervised present in existing detection device ask to overcome
Topic, the invention provides a kind of gas cylinder air-tight test complexes.
The technical scheme used to solve above-mentioned technical problem is:
A kind of gas cylinder air-tight test complexes, including assay device, data acquisition unit,
Long distance control system, wherein, described assay device includes gas compressor, inflation supervisor, fills
Gas branch pipe, detection pond and conveyer belt, inflation supervisor be connected with gas compressor steam vent, fills
Gas branch pipe is vertically connected with inflation supervisor side by side；Described data acquisition unit include pressure transducer,
Pressure transmitter, industry photographic head, camera bracket and collection all-in-one, gather in all-in-one
Putting analogue collection module and industrial computer, it is main that pressure transducer uses welding manner to be arranged on inflation
Guan Shang, analogue collection module and industrial computer use serial communication, pressure transducer to become with pressure
Sending device to be connected, pressure transmitter is connected with the analogue collection module gathered in all-in-one, shooting
Head bracket is placed in above detection pond, and industry photographic head is arranged on camera bracket, and industry is taken the photograph
As the camera lens of head is towards detection pond, industry photographic head is connected with the industrial computer gathered in all-in-one,
Gather all-in-one provide software interface, can interactively enter workman's job number, tested gas cylinder numbering with
And whether tested gas cylinder exists bubble, industrial computer onboard data monitoring of software in process of the test；
Described long distance control system include remote server and prison inspection software platform, remote server with adopt
Integrated machine is connected by network, and prison inspection software platform is disposed on the remote server, and prison inspection is soft
Part platform uses B/S framework, and computer and smart mobile phone utilize browser to pass through prison inspection software platform
Access the average test pressure in gas cylinder numbering, dwell time, pressurize time started, dwell time
The gas cylinder quantity of test in power, workman's job number, trial image, certain period, pressurize qualification rate,
Pass the test rate.
The built-in data monitoring software of the built-in industrial computer of described collection all-in-one is for Real-time Collection
Test pressure and trial image, specifically comprise the following steps that
(1) every time test is one group, and one group has the most tested gas cylinder of n, workman by n only by gas testing
Bottle is placed to detect pond from conveyer belt in order, is then gathering on all-in-one software interface
Input this n the most tested gas cylinder numbering, 1≤n≤15；
(2) data monitoring software is by pressure transducer, pressure transmitter and analog acquisition mould
Block collects test pressure, by industry camera collection to trial image, provides as follows simultaneously
Method realizes the synchronous acquisition between test pressure and trial image:
(2.1) test pressure is obtained from initial value P by demarcation0It is loaded into test rated pressure value
PmaxRequired pressing time is the T second, and it is also from rated pressure value PmaxIt is unloaded to initial
Value P0The required release time；
(2.2) data monitoring software is adopted by pressure transducer every the δ second respectively with polling mode
Collect single test pressure and by industry one trial image of camera collection, then in any T second
Interior times of collection is K=Round (T/ δ), and Round represents round function；
(2.3) t and K the pressure data in the T second above thereof is made to be Corresponding trial image is Use a young waiter in a wineshop or an inn
Multiplication is to point setCarry out fitting a straight line, obtain its slope λ；
(2.4) if ε ＜ λ andThen represent that the most tested gas cylinder of n of this group starts to add
Carry successfully, t now is recorded as the time that this air-tight test pressurize starts；If 0≤| λ |≤ε
AndThen represent that the most tested gas cylinder of n of this group is in packing state；If 0≤| λ |≤ε
AndThen represent that air-tight test is in free time；If λ ＜ 0 and | λ | ＜ ε andThen represent that the air-tight test of the most tested gas cylinder of n of this group is complete, the completeest
Become release, t-T now has been recorded as the time that this air-tight test pressurize terminates；On
Stating in description, ε, ρ are the most selected threshold value, ε ∈ (0,0.2], ρ ∈ (0,20%]；
(2.5) according to above-mentioned determination methods, it is assumed that in data acquisition sequence, t1Try for certain
Test the time that pressurize starts, t2The time completed for this air-tight test, then B=t2-T-t1
For the dwell time, M=Round (B/ δ) is made to represent the quantity of data acquisition sequence, then dwell time
Interior trial image sequence isTest in dwell time
Pressure sequence isWherein k represents from t1To t2Adopt between-T
Collect the trial image and test pressure sequence number, r arrivedkRepresent t1To t2Kth collection between-T
The time of point, meet rk+1=rk+ δ, r1=t1；
(2.6) in process of the test, by observational method, workman judges whether every tested gas cylinder produces
Bubble, if there being bubble to produce, then it represents that test defective, otherwise, represents pass the test；
(2.7) when this group air-tight test completes, by n gas cylinder numbering, dwell time B, guarantor
Pressure time started t1, average test pressure P in the dwell timeB, workman's job number, trial imageThe most qualified result of test that workman observes preserves
To data base, wherein
(2.8) if B >=B0And PB∈[0.8*Pmax,1.2*Pmax], then this test is qualified for pressurize；
If B is ＜ B0And PB∈[0.8*Pmax,1.2*Pmax], then this test is not enough for the dwell time；If B
≥B0AndThen this test is not enough for pressurize；If B is ＜ B0AndThen this test is the most not enough with pressure for the dwell time, Qi Zhonghou
It is defective that three kinds of situations are pressurize, B0For the minimum time that air-tight test is selected in advance, B0
>=60 seconds.
The technology of the present invention is contemplated that: invented a kind of gas cylinder air-tight test complexes, it
Sensor is utilized to complete the collection of test pressure data and utilize industry photographic head to complete trial image
Collection, and use certain method to realize the synchronization of the two, use frame difference method to realize further
Bubble-tight judgement, finally uses the prison inspection software platform of B/S structure that testing ground is carried out reality
Time monitoring.
The invention have the benefit that invented air tightness test device for gas cylinder achieves to test
Pressure data and the Real-time Collection of view data in journey, i.e. can realize the real-time prison of testing ground
Control, again can enterprise to special equipment Jian Jian mechanism application work certificate book time, special type sets
The process of the test of applied for product can be played back by standby Jian Jian mechanism by prison inspection software platform
Inquiry so as to verify whether its air-tight test is normally carried out, the most qualified, be not only does this facilitate
Improve the checkability of enterprise and ensure the quality safety of steel cylinder, it is achieved the wisdom of prison inspection, and
And contribute to reducing gas cylinder and produce prison inspection cost and improve special equipment and produce prison inspection efficiency and water
Flat, there is important popularization demonstration effect for implementing special equipment wisdom prison cubing.
Accompanying drawing explanation
Fig. 1 is the gas cylinder air-tight test complexes structure chart of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to sectional view
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the present invention is further detailed.Should be appreciated that
Specific embodiment described herein is used only for explaining the present invention, is not intended to limit the present invention.
With reference to Fig. 1, a kind of gas cylinder air-tight test complexes, including assay device, data
Harvester, long distance control system, as it is shown in figure 1, assay device by gas compressor 14,
Inflation supervisor 11, inflation arm 10, detection pond 5 form, inflation supervisor 11 and gas pressure
The steam vent of contracting machine 14 is connected, and inflation arm 10 is vertically connected with inflation supervisor 11 side by side；Number
Pressure transducer 12, pressure transmitter 13, industry photographic head 6, shooting is included according to harvester
Head bracket 15 and collection all-in-one 1, gather all-in-one 1 built-in mould analog quantity acquisition module and industry control
Machine, pressure transducer 12 uses welding manner to be arranged on inflation supervisor 11, analog acquisition
Module and industrial computer use serial communication, pressure transducer 12 and pressure transmitter 13 to use number
Being connected according to line 2, pressure transmitter 13 is connected with the analogue collection module gathered in all-in-one 1,
Camera bracket 15 is placed in above detection pond 5, and industry photographic head 6 is arranged on camera bracket
On 15, the camera lens of industry photographic head 6 towards detection pond 5, industry photographic head 6 with gather one
Industrial computer in body machine 1 is connected, and gathers all-in-one and provides software interface, can interactively enter work
Whether people's job number, tested gas cylinder numbering and tested gas cylinder exist bubble, work in process of the test
Control machine onboard data monitoring of software；Long distance control system includes remote server 7 and prison inspection software
Platform, remote server 7 is connected by network with gathering all-in-one 1, prison inspection software platform portion
Administration is on remote server 7, and prison inspection software platform uses B/S structure, computer and smart mobile phone
When utilizing browser to be started by prison inspection software platform access gas cylinder numbering, dwell time, pressurize
Between, average test pressure in the dwell time, workman's job number, trial image, in certain period
The gas cylinder quantity of test, pressurize qualification rate, pass the test rate.
The built-in data monitoring software of the built-in industrial computer of described collection all-in-one is for Real-time Collection
Test pressure and trial image, specifically comprise the following steps that
(1) every time test is one group, and one group has the most tested gas cylinder of n, workman by n only by gas testing
Bottle is placed to detect pond from conveyer belt in order, is then gathering on all-in-one software interface
Input the most tested gas cylinder of this n to number, 1≤n≤15, in the present embodiment, n=10；
(2) data monitoring software is by pressure transducer, pressure transmitter and analog acquisition mould
Block collects test pressure, by industry camera collection to trial image, provides as follows simultaneously
Method realizes the synchronous acquisition between test pressure and trial image:
(2.1) test pressure is obtained from initial value P by demarcation0It is loaded into test rated pressure value
PmaxRequired pressing time is the T second, and it is also from rated pressure value PmaxIt is unloaded to initial
Value P0The required release time；
(2.2) data monitoring software is adopted by pressure transducer every the δ second respectively with polling mode
Collect single test pressure and by industry one trial image of camera collection, then in any T second
Interior times of collection is K=Round (T/ δ), and Round represents round function；
(2.3) t and K the pressure data in the T second above thereof is made to be Corresponding trial image is Use a young waiter in a wineshop or an inn
Multiplication is to point setCarry out fitting a straight line, obtain its slope λ；
(2.4) if ε ＜ λ andThen represent that the most tested gas cylinder of n of this group starts to add
Carry successfully, t now is recorded as the time that this air-tight test pressurize starts；If 0≤| λ |≤ε
AndThen represent that the most tested gas cylinder of n of this group is in packing state；If 0≤| λ |≤ε
AndThen represent that air-tight test is in free time；If λ ＜ 0 and | λ | ＜ ε andThen represent that the air-tight test of the most tested gas cylinder of n of this group is complete, the completeest
Become release, t-T now has been recorded as the time that this air-tight test pressurize terminates；On
Stating in description, ε, ρ are the most selected threshold value, ε ∈ (0,0.2], ρ ∈ (0,20%],
In the present embodiment, ε=0.1, ρ=0.1；
(2.5) according to above-mentioned determination methods, it is assumed that in data acquisition sequence, t1Try for certain
Test the time that pressurize starts, t2The time completed for this air-tight test, then B=t2-T-t1
For the dwell time, M=Round (B/ δ) is made to represent the quantity of data acquisition sequence, then dwell time
Interior trial image sequence isTest in dwell time
Pressure sequence isWherein k represents from t1To t2Adopt between-T
Collect the trial image and test pressure sequence number, r arrivedkRepresent t1To t2Kth collection between-T
The time of point, meet rk+1=rk+ δ, r1=t1；
(2.6) in process of the test, by observational method, workman judges whether every tested gas cylinder produces
Bubble, if there being bubble to produce, then it represents that test defective, otherwise, represents pass the test；
(2.7) when this group air-tight test completes, by n gas cylinder numbering, dwell time B, guarantor
Pressure time started t1, average test pressure P in the dwell timeB, workman's job number, trial image, the most qualified result of the test observed of workman preserves
To data base, wherein
(2.8) if B >=B0And PB∈[0.8*Pmax,1.2*Pmax], then this test is qualified for pressurize；
If B is ＜ B0And PB∈[0.8*Pmax,1.2*Pmax], then this test is not enough for the dwell time；If B
≥B0AndThen this test is not enough for pressurize；If B is ＜ B0AndThen this test is the most not enough with pressure for the dwell time, Qi Zhonghou
It is defective that three kinds of situations are pressurize, B0For the minimum time that air-tight test is selected in advance, B0
>=60 seconds, in the present embodiment, B0=300 seconds.
After implementing the present invention, when enterprise is to special equipment Jian Jian mechanism's application work certificate book,
The process of the test of applied for product can be entered by special equipment Jian Jian mechanism by prison inspection software platform
Whether row playback inquiry to investigate the dwell pressure of its air-tight test, dwell time, test
Qualified.
Claims (1)
1. gas cylinder air-tight test complexes, by assay device, data acquisition unit and remotely
Monitoring system is constituted, it is characterised in that:
Described assay device include gas compressor, inflation supervisor, inflation arm, detection pond and
Conveyer belt, inflation supervisor be connected with gas compressor steam vent, and inflation tube side-by-side is main with inflation
Pipe is vertically connected；
Described data acquisition unit includes pressure transducer, pressure transmitter, industry photographic head, takes the photograph
As head bracket and collection all-in-one, gather all-in-one built-in mould analog quantity acquisition module and industrial computer,
Pressure transducer uses welding manner to be arranged on inflation supervisor, analogue collection module and industry control
Machine uses serial communication, and pressure transducer is connected with pressure transmitter, pressure transmitter and collection
Analogue collection module in all-in-one is connected, and camera bracket is placed in above detection pond, work
Industry photographic head is arranged on camera bracket, and the camera lens of industry photographic head is towards detection pond, work
Industry photographic head is connected with the industrial computer gathered in all-in-one, gathers all-in-one and provides software interface,
Can interactively enter workman's job number, tested gas cylinder numbering and tested gas cylinder is in process of the test
The no bubble that exists, industrial computer onboard data monitoring of software, this data monitoring software is as follows
Collection test pressure and trial image:
(1) every time test is one group, and one group has the most tested gas cylinder of n, workman by n only by gas testing
Bottle is placed to detect pond from conveyer belt in order, is then gathering on all-in-one software interface
Input this n the most tested gas cylinder numbering, 1≤n≤15；
(2) data monitoring software is by pressure transducer, pressure transmitter and analog acquisition mould
Block collects test pressure, by industry camera collection to trial image, provides as follows simultaneously
Method realizes the synchronous acquisition between test pressure and trial image:
(2.1) test pressure is obtained from initial value P by demarcation0It is loaded into test rated pressure value
PmaxRequired pressing time is the T second, and it is also from rated pressure value PmaxIt is unloaded to initial
Value P0The required release time；
(2.2) data monitoring software is adopted by pressure transducer every the δ second respectively with polling mode
Collect single test pressure and by industry one trial image of camera collection, then in any T second
Interior times of collection is K=Round (T/ δ), and Round represents round function；
(2.3) t and K the pressure data in the T second above thereof is made to beCorresponding trial image isUse a young waiter in a wineshop or an inn
Multiplication is to point setCarry out fitting a straight line, obtain its slope λ；
(2.4) if ε ＜ λ andThen represent that the most tested gas cylinder of n of this group starts to add
Carry successfully, t now is recorded as the time that this air-tight test pressurize starts；If 0≤| λ |≤ε
AndThen represent that the most tested gas cylinder of n of this group is in packing state；If 0≤| λ |≤ε
AndThen represent that air-tight test is in free time；If λ ＜ 0 and | λ | ＜ ε andThen represent that the air-tight test of the most tested gas cylinder of n of this group is complete, the completeest
Become release, t-T now has been recorded as the time that this air-tight test pressurize terminates；On
Stating in description, ε, ρ are the most selected threshold value, ε ∈ (0,0.2], ρ ∈ (0,20%]；
(2.5) according to above-mentioned determination methods, it is assumed that in data acquisition sequence, t1Try for certain
Test the time that pressurize starts, t2The time completed for this air-tight test, then B=t2-T-t1
For the dwell time, M=Round (B/ δ) is made to represent the quantity of data acquisition sequence, then dwell time
Interior trial image sequence isTest in dwell time
Pressure sequence isWherein k represents from t1To t2Adopt between-T
Collect the trial image and test pressure sequence number, r arrivedkRepresent t1To t2Kth collection between-T
The time of point, meet rk+1=rk+ δ, r1=t1；
(2.6) in process of the test, by observational method, workman judges whether every tested gas cylinder produces
Bubble, if there being bubble to produce, then it represents that test defective, otherwise, represents pass the test；
(2.7) when this group air-tight test completes, by n gas cylinder numbering, dwell time B, guarantor
Pressure time started t1, average test pressure P in the dwell timeB, workman's job number, trial imageThe most qualified result of test that workman observes preserves
To data base, wherein
(2.8) if B >=B0And PB∈[0.8*Pmax,1.2*Pmax], then this test is qualified for pressurize；
If B is ＜ B0And PB∈[0.8*Pmax,1.2*Pmax], then this test is not enough for the dwell time；If B
≥B0AndThen this test is not enough for dwell pressure；If B is ＜ B0
AndThen this test is the most not enough with dwell pressure for the dwell time,
It is defective that rear three kinds of situations are pressurize, B0For air-tight test in advance selected minimum time
Between, B0>=60 seconds；
Described long distance control system include remote server and prison inspection software platform, remote server with
Gathering all-in-one to be connected by network, prison inspection software platform is disposed on the remote server, prison inspection
Software platform uses B/S structure, and computer and smart mobile phone utilize browser to pass through prison inspection software and put down
Platform access gas cylinder numbering, test pressure, dwell time, test initial time, whether leak gas,
Workman's job number, the same day test gas cylinder quantity, qualification rate, testing ground image.
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| CN104535272B (en) * | 2014-12-16 | 2017-04-12 | 江苏中宏机械制造有限公司 | Bottle bottom airtight device with quickly aligning function |
| CN104748917A (en) * | 2015-04-20 | 2015-07-01 | 江苏宝亨新电气有限公司 | Device for remotely monitoring sealing property of casing pipe of transformer |
| CN105445109B (en) * | 2015-12-22 | 2018-08-17 | 长庆石油勘探局技术监测中心 | Carbon fiber gas cylinder deflection and bearing capacity test device and test method |
| CN105547606B (en) * | 2015-12-22 | 2018-08-17 | 长庆石油勘探局技术监测中心 | A kind of carbon fiber gas cylinder air-tightness automatic testing equipment and test method |
| CN105509981B (en) * | 2016-01-16 | 2018-02-27 | 芜湖市海格瑞德科技有限责任公司 | A kind of automobile-used low temperature LNG horizontally welded insulated gas cylinders gas inspection detection means and application method |
| CN106017820A (en) * | 2016-06-28 | 2016-10-12 | 广东工业大学 | Detection system and detection method of sealing performance of container |
| CN108507728B (en) * | 2018-06-05 | 2024-04-16 | 陕西博菲特流体控制装备制造有限公司 | Modularized heat tracing integration station pressurizing testing device |
| CN109000854A (en) * | 2018-08-24 | 2018-12-14 | 芜湖源码自动化设备有限公司 | The device of automatic detection sealing performance |
| CN109341969A (en) * | 2018-11-28 | 2019-02-15 | 芜湖汉峰科技有限公司 | Liquid storage device air-tightness detection device |
| CN109520678B (en) * | 2018-12-26 | 2021-01-19 | 浙江工业大学 | Pressure maintaining detection method for pressure vessel air tightness test |
| CN109883817A (en) * | 2019-04-28 | 2019-06-14 | 杭州市特种设备检测研究院 | Remote supervisory checking system for pressure container pressure resistance test |
| CN111060257B (en) * | 2019-12-26 | 2024-05-31 | 中国能源建设集团华东电力试验研究院有限公司 | Air tightness experiment testing device and testing method thereof |
| CN116007854B (en) * | 2023-03-24 | 2023-06-23 | 临沂千源包装印刷有限公司 | Detection device for detecting air tightness and pressure resistance of packaging bag |
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