CN1272613C - Air tightness detection and drying treatment system for sealed cabin - Google Patents
Air tightness detection and drying treatment system for sealed cabin Download PDFInfo
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- CN1272613C CN1272613C CN 200410022379 CN200410022379A CN1272613C CN 1272613 C CN1272613 C CN 1272613C CN 200410022379 CN200410022379 CN 200410022379 CN 200410022379 A CN200410022379 A CN 200410022379A CN 1272613 C CN1272613 C CN 1272613C
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- 238000001514 detection method Methods 0.000 title claims abstract description 84
- 238000001035 drying Methods 0.000 title claims abstract description 12
- 238000000746 purification Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 7
- 239000002775 capsule Substances 0.000 claims description 100
- 238000012360 testing method Methods 0.000 claims description 54
- 230000002950 deficient Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 9
- 239000003595 mist Substances 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000007600 charging Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 1
- 230000000704 physical effect Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 64
- 238000010586 diagram Methods 0.000 description 6
- 238000013022 venting Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The invention provides a sealed cabin air tightness detection and drying treatment system which comprises an air source purification part, an automatic detection part, an upper computer part for data processing and a product detection sealed cabin part, wherein the air source purification part is used for purifying an air source, the automatic detection part is used for automatically completing air tightness detection and drying treatment of the sealed cabin, and the upper computer is used for completing online storage of temperature, humidity and pressure physical properties in the detection and drying treatment process. The air source purification part consists of an air source purification air path and an air source purification circuit. The automatic detection part consists of an automatic detection gas circuit, a detection control circuit and a PLC control program. The air source purification part is connected with the automatic detection part, the PLC of the detection control circuit of the automatic detection part is connected with the upper computer, and the automatic detection part is connected with the detection product sealed cabin. The airtight detection and drying treatment system of the sealed cabin integrates an air source purification system, and the air source quality is high. The air tightness detection and drying treatment functions of the sealed cabin are integrated, an air compressor and a vacuum generator are adopted in an air path, the integration of positive pressure and negative pressure of the sealed cabin is realized, and a user does not need to configure a special positive pressure air source and a special negative pressure air source. The invention integrates the airtight detection and the drying treatment of the sealed cabin into a system, and can meet the requirements of some special industries.
Description
1. technical field
Airtight container impermeability detection range of the present invention, be specifically related to that a kind of integrated pressurized capsule impermeability detects automatically, dried, and real-time online record and store the pressurized capsule impermeability that gaseous tension in the pressurized capsule, temperature, humidity physical property change and detect and the dried system.
2. background technology
In the leak detection and dried process of pressurized capsule, existing technology is to adopt impermeability to detect and two complete independent parts of dried, need utilize special air tightness detection equipment and special equipment for drying that pressurized capsule is hunted leak and dried.
At present, known pressurized capsule air-tightness detection device generally is made up of tensimeter, valve and industrial high-pressure air source, and industrial high-pressure air source is inflated pressurized capsule, and when the pressurized capsule internal pressure reached rated pressure, shut-off valve detected the pressure drop of pressurized capsule within a certain period of time.Because device itself is not with source of the gas source of the gas not to be carried out purified treatment simultaneously, thus such device used, the one, the building site must be equipped with high-pressure air source, and the 2nd, the source of the gas that does not purify can pollute precision components in the pressurized capsule.
The pressurized capsule equipment for drying is made up of nitrogen storage gas tank, vacuum pump, valve and humidity sensor.Adopt the soft air in the dry nitrogen replacement pressurized capsule, specific practice is to bleed in pressurized capsule, inflation again, and so circulation, the humidity in pressurized capsule reaches till the required value.Use such equipment, the one, the entire equipment more complicated, volume is bigger; The 2nd, adopt manual operations, the action of valve and the observation data of humidity have the phenomenon of hysteresis, simultaneously workman's operative technique are had relatively high expectations.
Because in special industry, when need carry out the impermeability detection to pressurized capsule, also need pressurized capsule is carried out dried, and require record pressurized capsule impermeability to detect and the dried process in pressure and humiture in the pressurized capsule, humiture and the pressure requirement in the pressurized capsule during with the storage of satisfying pressurized capsule with the sealing property that detects pressurized capsule.So to detection of integrated pressurized capsule impermeability and dried and write down the pressurized capsule internal pressure automatically, the humiture data just seem extremely important.
3. summary of the invention
The pressurized capsule impermeability detects and dried need be provided with two cover systems in order to overcome in the prior art, and the deficiency that easily components and parts in the pressurized capsule polluted of the source of the gas of Jing Huaing not, the invention provides a kind of pressurized capsule impermeability detects and the dried system, not only can carry out impermeability to pressurized capsule detects, can also carry out dried, and record and storage detects, the data of pressure and humiture in the dried process.
Pressurized capsule impermeability of the present invention detects and the dried system solves the technical scheme that its technical matters adopts and is: pressurized capsule impermeability of the present invention detects and the dried system comprises the gas source purification part, automatic detection part, the host computer that is used for data processing, testing product pressurized capsule four parts, gas source purification is realized the purified treatment of source of the gas, data read and process that automatic detection part is finished in detection of testing product pressurized capsule impermeability and the dried process realize that the host computer that is used for data processing is finished the online storage of detection and dried process humiture and pressure physical property.
The gas source purification part is made up of gas source purification gas circuit and source of the gas clean circuit.The gas source purification gas circuit comprises air compressor machine, main road filtrator, oil mist separator, no hot air dryer, extra small oil mist separator, and connects successively, finishes the purification of source of the gas; The gas source purification circuit comprises air switch, power light, fuse, start button, contactor, the time relay, stop button, and is electrically connected successively, finishes that the priority of air compressor machine and exsiccator starts in the gas circuit.
Automatic detection part is made up of detection gas circuit, testing circuit, PLC control program.Detect gas circuit and comprise reduction valve, source of the gas indicator, reversal valve a, one-way throttle valve, reversal valve b, LED flow switch, positive/negative pressure table, vacuum generator, and connect successively, required inflation, pressurize when realizing the integrated and testing process of positive and negative pressure source of the gas and dried, exit and find time the loop.Testing circuit comprises the time relay; the low-voltage protection circuit; pressure switch; power light; pause switch; air escape cock; operating switch; fuse; the humiture transmitter; power switch; 24V alkaline battery electric battery; analogue unit a; analogue unit b; PLC; the leakage alarm hummer; hummer is finished in work; the pressurize pilot lamp; and be electrically connected successively, testing circuit and PLC control program finish automatically that testing product pressurized capsule impermeability detects and the dry treatment process process in to humiture; required inflation when pressure transducer detects reading of data and testing process and dried; pressurize; the automatic switchover in the venting and the loop of finding time.
The epigynous computer section that is used for data processing realizes the exchange of the interior data of PLC of host computer and automatic detection part, read pressure, humiture data from PLC, and real-time online is stored pressure, humiture data.
The gas source purification part is connected with automatic detection part, the PLC of testing circuit is connected with host computer in the automatic detection part, automatic detection part is connected with the testing product pressurized capsule again, finish the integrated of automatic detection of the interior impermeability of pressurized capsule and dried, realize the online storage of temperature, humidity and pressure physical property in detection and the dried process.
In pressurized capsule impermeability detection of the present invention and the dried system, the impermeability testing process of testing product pressurized capsule comprises following content: adopt and suppress voltage drop method, fill the dried and clean air to pressurized capsule, pressure is higher than atmospheric pressure.Observe pressure drop within a certain period of time, in limited range, it is qualified that impermeability detects as if pressure drop, otherwise, defective.The dried program of testing product pressurized capsule comprises following content: the method that adopts soft air in the dried and clean air displacement pressurized capsule, in pressurized capsule, fill dry gas and extract soft air out, real-time online detects the humidity value in the pressurized capsule, and the humidity in pressurized capsule reaches the regulation requirement.
The humiture of pressurized capsule, the online stored programme of pressure data comprise: two analogue units that adopt PLC to expand read the analogue value of pressure transducer and humiture transmitter, by communication cable data in real time is transported in the host computer, host computer is realized the storage of humiture and pressure data.
Pressurized capsule impermeability of the present invention detects and the beneficial effect of dried system is, integrated gas source purification system, source of the gas quality height.Integrated pressurized capsule impermeability detects and the dried function automatically, adopts air compressor machine and vacuum generator in gas circuit, realizes the integrated of detection of pressurized capsule impermeability and dried positive and negative pressure, and the user need not dispose special positive and negative pressurized air source.The data of gaseous tension, temperature, humidity in the pressurized capsule are write down and stored to the setting and the utilization of sensor, PLC and host computer simultaneously realize automatically that not only the pressurized capsule impermeability detects and dried, and real-time online.
4. description of drawings
Fig. 1 is the system architecture diagram of pressurized capsule impermeability detection of the present invention and dried system
Fig. 2 is the schematic diagram of gas circuit of gas source purification part in pressurized capsule impermeability detection of the present invention and the dried system
Fig. 3 is the circuit theory diagrams of gas source purification part in pressurized capsule impermeability detection of the present invention and the dried system
Fig. 4 is the schematic diagram of gas circuit of automatic detection part in pressurized capsule impermeability detection of the present invention and the dried system
Fig. 5 is the two-position three way valve principle schematic of automatic detection part in pressurized capsule impermeability detection of the present invention and the dried system
Fig. 6 is the vacuum generator principle of work synoptic diagram of automatic detection part in pressurized capsule impermeability detection of the present invention and the dried system
Fig. 7 is the circuit theory diagrams of automatic detection part in pressurized capsule impermeability detection of the present invention and the dried system
1 2 3 4 56 7 8 9 10 1112 13 14 15 ( 16、18、40 ) 17 19 20 21 22 23 24 25 26 27a 28 29.b 30LED 31 32 33 34 35 36 37 38 39 41 42 43 24V 44a 45b 46PLC 47 48 49
The present invention is further described below in conjunction with drawings and Examples
5. embodiment
Among the figure, pressurized capsule impermeability of the present invention detects and the dried system comprises gas source purification part 1, automatic detection part 4, host computer 7 and testing product pressurized capsule 8 four parts.Gas source purification part 1 is connected with automatic detection part 4, PLC 46 in the automatic detection part 4 is connected with host computer 7, automatic detection part 4 also is connected with testing product pressurized capsule 8, realizes the impermeability detection of testing product pressurized capsule 8 and the humiture in dried and detection and the dried process, the storage of pressure data.Gas source purification part 1 is made up of gas source purification gas circuit 2 and source of the gas clean circuit 3, purifies the purified treatment that gas circuit 2 realizes the air source of the gas, and gas source purification circuit 3 successively starts air compressor machine 9 and exsiccator 12 in the gas source purification gas circuit 2.Automatic detection part 4 is formed by detecting gas circuit 5 and testing circuit 6 and PLC46 control program; Detect the impermeability that gas circuit 5 forms testing product pressurized capsules 8 and detect and the required various loops of dried, the orderly automatic switchover in testing circuit 6 each loop of realization and the detection of pressure humiture data and read; The PLC46 of host computer 7 from automatic detection part 4 realizes data communication by cable, reads and store humiture and pressure data in impermeability detection and the dried process; Have two interfaces on the testing product pressurized capsule 8, connect with flexible pipe respectively and detect gas circuit 5 and automatic testing circuit 6 in the automatic detection part 4 automatically.
Gas source purification gas circuit 2 is made up of air compressor machine 9, main road filtrator 10, oil mist separator 11, no hot air dryer 12, extra small oil mist separator 13 in the gas source purification part 1, and connects successively.The course of work of gas source purification gas circuit 2 is, at first, pressurized air is through self stop valve of air compressor machine 9, the impurity such as greasy dirt, moisture and dust that main road filtrator 10 is removed in the pressurized air, oil mist separator 11 further separates (0.3～5) μ m gaseous state colloidal sol elaioleucite of being difficult to separate in the main road filtrator 10 and greater than particulates such as the rust end of 0.3 μ m, carbon classes, no hot air dryer 12 is exported the pressurized air of dry decontaminations continuously.Extra small oil mist separator 13 further removes the gaseous state elaioleucite in the dry pressurized air of crossing.
Through the air after the above processing, its index can reach:
Atmospheric pressure dew point :-47 ℃～-53 ℃
Oily sub: 0.004mg/m
3
Contain the dust particulate: 0.01 μ m
Gas source purification circuit 3 is made up of air switch 14, power light 15, fuse 16, stop button 17, fuse 18, exsiccator circuit unit 19, exsiccator pilot lamp 20, the time relay 21, contactor 22, start button 23, air compressor motor 24, and is electrically connected successively.Contactor 22 and the time relay 21 control air compressor motors 24 and exsiccator circuit unit 19 successively start.
Automatic detection part 4 is formed by detecting gas circuit 5, testing circuit 6 and PLC control program, wherein detect gas circuit 5 automatically and form, and connect successively by reduction valve 25, source of the gas indicator 26, reversal valve a27, one-way throttle valve 28, reversal valve b29, LED flow switch 30, positive/negative pressure table 31, vacuum generator 32; Reversal valve a27 and reversal valve b29 adopt two position three-way valve, A → P need switch under state shown in Figure 5, A → R no power, according to the switching of the power on/off of reversal valves in reversal valve a27, reversal valve b29 and the vacuum generator 32 realize suppressing, find time, pressurize and venting loop.
Detect the inflation loop of gas circuit 5: reversal valve a27 gives electricity, reversal valve b29 outage, the outage of vacuum generator 32 reversal valves.Air communication is crossed reduction valve 25, source of the gas pilot lamp 26, reversal valve a27, one-way throttle valve 28, reversal valve b29, LED flow switch 30,8 inflations of positive/negative pressure table 31 pair testing product.
The loop of finding time: reversal valve a27 outage, reversal valve b29 give for electricity, vacuum generator 32 reversal valves.Air communication is crossed reduction valve 25, source of the gas pilot lamp 26, and reversal valve a27, vacuum generator 32 produce high velocity air and drive testing product pressurized capsule 8 interior gases from testing product pressurized capsule 8, positive/negative pressure table 31, LED flow switch 30, reversal valve b29, vacuum generator 32 discharges.
The venting loop; Reversal valve a27 outage, reversal valve b29 give electricity, the outage of vacuum generator 32 reversal valves.Air-flow is discharged from testing product pressurized capsule 8, positive/negative pressure table 31, LED flow switch 30, reversal valve b29, vacuum generator 32.
Pressure dwelling loop: all reversal valve outages, just initial state.Air communication is crossed reduction valve 25, source of the gas pilot lamp 26, and reversal valve a27 ends.
The vacuum generator 32 that the present invention selects for use is formed by shrinking earlier the Laval nozzle A, the negative pressure cavity B that afterwards expand and receiving tube C etc.After the supply gas pressure of air supply opening was higher than certain value, jet pipe A penetrated supersonic jet, because the viscosity of gas, high-speed jet entrainments the gas in the negative pressure cavity B, made this chamber form very low vacuum tightness.Connecting testing product pressurized capsule 8 at vacuum port can vacuumize it.
In the automatic detection part 4 testing circuit 6 by the time relay 33, low-voltage protection circuit 34, pressure switch 35, power light 36, pause switch 37, air escape cock 38, operating switch 39, fuse 40, humiture transmitter 41, power switch 42,24V alkaline battery electric battery 43, analogue unit a 44, analogue unit b 45, PLC 46, leakage alarm hummer 47, hummer 48 is finished in work, pressurize pilot lamp 49 is formed, and be electrically connected successively.Whole testing circuit 6 is a control center with PLC46; pressure switch 35 and humiture transmitter 41 are realized the detection of testing product pressurized capsule 8 pressure, humiture; analogue unit a44, analogue unit b 45 realize the A/D conversion to humiture and pressure; the monitoring that low-voltage protection circuit 34 is realized 24V alkaline battery electric battery 43 voltages; when supply voltage is lower than 22V; prompting is reported to the police, and needs 43 chargings of 24V alkaline battery electric battery.
Carry out the PLC46 control program and realize that automatic impermeability detects and dried
PLC switching value input/output signal is as follows:
Pushbutton switch:
Operating switch 39: after pressing this button, program begins to carry out, and adopts spring-return switch.
Pause switch 37: after pressing this button, program halt is carried out, and after pressing once more, program is then carried out, and selects self-lock switch for use.
Air escape cock 38: after pressing this button, the venting of testing product pressurized capsule, program stops to carry out.
Sensor input switch amount:
Pressure switch 35OUT1: pressurising pressure arrives and the defective signal of pressure drop.
Pressure switch 35OUT2: evacuation pressure is to signal.
The input signal of 33 couples of PLC46 of the time relay: the dwell time arrives.
PLC46 is to the output signal of the time relay 33: the beginning pressurize.
PLC46 is to the output signal of vacuum generator 32: vacuum generator 32 two position three-way valves are given.
PLC46 is to the output signal of reversal valve a27: reversal valve a27 gives.
PLC46 is to the output signal of reversal valve b29: reversal valve b29 gives.
Leakage alarm hummer 47: impermeability detects defective warning.
Hummer 48 is finished in work: end-of-job.
Pressurize pilot lamp 49: packing state indication.
The address assignment of each input block and output unit is as follows:
| Input signal | Output signal | ||
| I/O number | Signal definition | I/O number | Signal definition |
| 00003 | Operating switch | 1001 | Pick up counting |
| 00004 | Flow is low excessively | 1002 | The vacuum generator valve is given |
| 00005 | Flow is too high | 1003 | Reversal valve a gives |
| 00006 | Suppress pressure to or pressure drop defective | 1004 | Leakage alarm |
| 00007 | Evacuation pressure arrives | 1006 | Commutation b gives |
| 00102 | | 1102 | End-of-job |
| 00103 | The venting of testing product pressurized | 1103 | The pressurize pilot lamp shows |
| 00008 | Dwell time arrives |
Temperature-humidity signal is input to PLC46 analogue unit a44, and pressure signal is input to next analogue unit b45.Because humiture is the output of the magnitude of current, on hardware connects, the input 1 of analogue unit a44 and the electric current and the voltage terminal short circuit of input 2, and setting input 1 is the temperature input, input 2 is humidity inputs, and analogue unit b45 directly connects voltage input end, sets input 1 and is the voltage input.
The PLC46 control program is:
Program realizes at the beginning that to pressure switch 35 and humiture transmitter 41 data reads analogue unit is realized the A/D conversion of pressure, humiture data.
The air-tightness of realizing the testing product pressurized capsule then detects: after pressing operating switch 39, reversal valve a27 energising, form the inflation loop, fill the dried and clean air to testing product pressurized capsule 8, when pressure switch 35 detects pressure and is P1MPa (setting pressure), pressurize, PLC46 gives reversal valve a27 outage, form pressure dwelling loop, PLC46 gives the time relay 33 pressurize signals simultaneously, and pressurize T minute, pressure drop was not more than Δ PMPa, it is qualified to think that impermeability detects, if surpass Δ P MPa, then defective, PLC46 provides qualified and defective signal respectively, defective powered-down turns to dried to testing product pressurized capsule (8) when airtight test is qualified.
The dried program of pressurized capsule: after impermeability detects and finishes, adopt dried and clean charge of air and the displacement of finding time to realize soft air in the pressurized capsule, the vacuum pressure that vacuumizes displacement testing product pressurized capsule (8) dry air is taken as P3MPa, and the air pressure of filling dried and clean is P1MPa.After drying was handled, the interior relative humidity of testing product pressurized capsule (8) was not more than a%.Record force value in the pressurized capsule with pressure switch 35, vacuum pressure is that P3MPa gives PLC46 input signal when bleeding, PLC46 output inflation signal, when testing product pressurized capsule 8 is inflated to P1MPa, the PLC46 output signal of finding time, simultaneously when charge pressure reaches P1MPa, the humidity that humiture transmitter 41 detects in the testing product pressurized capsules 8, during less than a%, make PLC46 provide the end-of-job signal in humidity.
Battery under-voltage observation circuit 34 mainly is made up of mu balanced circuit, voltage comparator circuit and warning circuit in the testing circuit 6, and this three partial circuit is made up of the hummer of L7815, LM393 and band multi-resonant oscillating circuit respectively.Wherein L7815 is that output voltage is the three terminal regulator of 15V, and LM393 is that inside has two independently logic converters of accurate voltage comparer.To the operating voltage of the stable 24V of circuit, normal voltage negative input end (pin 2) to LM393 after resistance R 1=10k and R2=10K dividing potential drop of L7815 output simultaneously provides battery under-voltage warning reference voltage to power supply after the L7815 voltage stabilizing; The virtual voltage of another drive test amount circuit provides the battery electric quantity monitoring voltage by the positive input terminal (pin 3) to LM393 after the R3/R4 dividing potential drop.Triode 9012 is equivalent to a switch, and when the voltage (monitoring voltage) of the positive input terminal of LM393 was higher than the voltage (reference voltage) of negative input end, the output level of LM393 made 9012 base stage be in noble potential, and triode 9012 ends; Otherwise, when the voltage of the positive input terminal of LM393 is lower than the voltage of negative input end, triode 9012 conductings, buzzer warning.
The serial port that is used for the host computer 7 of data processing is set up serial communication with the communication unit of the PLC46 of automatic detection part 4 and is connected, thereby each relay district of read-write PLC46 and register reach the purpose that reads and store humiture and pressure data among the PLC46.
Impermeability detection of the present invention and the concrete workflow of dried system are as follows: at first connect gas source purification part 1 and automatic detection part 4 with flexible pipe; Connect automatic detection part 4 and testing product pressurized capsule 8 with flexible pipe again, connect the PLC46 and the host computer 7 of automatic detection part 4 with communication cable.
Connect the 220V power supply of gas source purification part 1, push to air switch 14, startup knob 23 is pressed in power light 15 indications of control panel, the work of beginning gas source purification.
Press the power switch 42 of automatic detection part 4, operating switch 39 is pressed in power light 36 indications, and PLC46 reads the data of pressure switch 35 and humiture transmitter 41, and testing product pressurized capsule 8 beginning impermeability are detected and dried.
Connect the power supply of host computer 7, host computer 7 enters the impermeability working interface, begins pressure, humiture data read and storage.
Pressurized capsule impermeability testing result is qualified, turns to the pressurized capsule dried automatically, and when humidity in the pressurized capsule and pressure all met the demands, the 48 prompting work of " work is finished " hummer were finished on automatic detection part 4 control panels.
Pressing " power switch " 42 on automatic detection part 4 panels presses the leave behind air switch 14 of switch board side of dry decontamination compressed air source unit control panel " stop button " 17 and pulls out the 220V supply socket.Each device and annex playback, end-of-job.
If it is defective that the pressurized capsule impermeability detects, then leakage alarm hummer 47 is reported to the police on automatic detection part 4 control panels.Everything stops, and presses air escape cock 38 gaseous tension in the testing product pressurized capsule 8 is discharged, and checks the leak source of testing product pressurized capsule 8.
Claims (7)
1. the pressurized capsule impermeability detects and the dried system, it is characterized in that, contains gas source purification part (1), automatic detection part (4), the host computer (7) that is used for data processing and testing product pressurized capsule (8) four parts; Gas source purification part (1) is made up of gas source purification gas circuit (2) and source of the gas clean circuit (3); Automatic detection part (4) is formed by detecting gas circuit (5), testing circuit (6), PLC (46) and control program; The gas source purification gas circuit (2) of gas source purification part (1) is connected with automatic detection part (4), PLC (46) in the automatic detection part (4) is connected by communication cable with host computer (7), and automatic detection part (4) is connected with testing product pressurized capsule (8).
2. pressurized capsule impermeability according to claim 1 detects and the dried system, it is characterized in that, the gas source purification gas circuit (2) of described gas source purification part (1) comprises air compressor machine (9), main road filtrator (10), oil mist separator (11), no hot air dryer (12), extra small oil mist separator (13), and connects successively.
3. pressurized capsule impermeability according to claim 1 detects and the dried system, it is characterized in that, the gas source purification circuit (3) of described gas source purification part (1) comprises air switch (14), power light (15), fuse (16,18), start button (23), contactor (122), the time relay (21), stop button (17), and is electrically connected successively.
4. pressurized capsule impermeability according to claim 1 detects and the dried system, it is characterized in that, the detection gas circuit (5) of described automatic detection part (4) comprises reduction valve (25), source of the gas indicator (26), reversal valve a (27), one-way throttle valve (28), reversal valve b (29), LED flow switch (30), positive/negative pressure table (31), vacuum generator (32), and connects successively.
5. pressurized capsule impermeability according to claim 1 detects and the dried system; it is characterized in that; the testing circuit (6) of described automatic detection part (4) comprises the time relay (33); low-voltage protection circuit (34); pressure switch (35); power light (36); pause switch (37); air escape cock (38); operating switch (39); fuse (40); humiture transmitter (41); power switch (42); 24V alkaline battery electric battery (43); analogue unit a (44); analogue unit b (45); PLC (46); leakage alarm hummer (47); hummer (48) is finished in work; pressurize pilot lamp (49), and be electrically connected successively.
6. the air-tightness detection method that is used for described pressurized capsule impermeability detection of claim 1 and dried system, it is characterized in that, described air-tightness detection method comprises following content: fill the dried and clean air to testing product pressurized capsule (8), when pressure switch (35) detects pressure and is setting pressure P1MPa, pressurize; PLC (46) control reversal valve a (27) outage forms pressure dwelling loop, and PLC (46) gives the time relay (33) pressurize signal simultaneously, pressurize number minute; Pressure drop is not more than Δ PMPa, and it is qualified to think that impermeability detects, if surpass Δ P MPa, then defective, PLC (46) provides qualified and defective signal respectively, detects defective then powered-down, detects the qualified dry handling procedure that then turns to.
7. the drying method that is used for described pressurized capsule impermeability detection of claim 1 and dried system, it is characterized in that, described drying method comprises: by charging into the displacement of soft air realization pressurized capsule (8) gas in dried and clean air and the extraction cabin, PLC (46) is according to pressure and the humidity parameter numerical value set, the control inflation, bleed and the humidity change procedure, frequency, force value variation range in controlled pressure switch (35) the testing product pressurized capsule (8), control moisture temperature transmitter (41) detects the range of humidity variation in the testing product pressurized capsule (8), the start-stop of decision dry run.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022379 CN1272613C (en) | 2004-04-23 | 2004-04-23 | Air tightness detection and drying treatment system for sealed cabin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022379 CN1272613C (en) | 2004-04-23 | 2004-04-23 | Air tightness detection and drying treatment system for sealed cabin |
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| CN1570582A CN1570582A (en) | 2005-01-26 |
| CN1272613C true CN1272613C (en) | 2006-08-30 |
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| CN 200410022379 Expired - Fee Related CN1272613C (en) | 2004-04-23 | 2004-04-23 | Air tightness detection and drying treatment system for sealed cabin |
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| CN102519682A (en) * | 2011-10-27 | 2012-06-27 | 天瀚科技(吴江)有限公司 | GPS (Global Position System) module watertightness testing device |
| CN104076834A (en) * | 2014-03-18 | 2014-10-01 | 北京卫星环境工程研究所 | Spacecraft sealed cabin humidity control system and method used for vacuum hot test |
| CA2969614C (en) * | 2014-12-03 | 2018-01-02 | New York Air Brake Llc | Air dryer system for a locomotive with optimized purge air control |
| CN105136415A (en) * | 2015-09-02 | 2015-12-09 | 华晨汽车集团控股有限公司 | Structure and method for detecting air impermeability of battery bag case |
| CN105928673B (en) * | 2016-04-15 | 2018-06-29 | 厦门攸信信息技术有限公司 | A kind of leak detection system and control method for water-filled radiator |
| CN105841311A (en) * | 2016-05-18 | 2016-08-10 | 北京送变电公司 | Ventilation system |
| CN107878204B (en) * | 2016-09-30 | 2020-10-02 | 蜂巢能源科技有限公司 | Battery pack sealing detection method and system and vehicle |
| CN107687921A (en) * | 2017-07-07 | 2018-02-13 | 中国航空工业集团公司西安飞机设计研究所 | A kind of airtight inspection method of aircraft air-tight cabin |
| CN108577518A (en) * | 2018-01-26 | 2018-09-28 | 山东鸿盛厨业集团有限公司 | A kind of double door intelligent pressure steaming room |
| CN109000860B (en) * | 2018-08-28 | 2020-01-03 | 珠海格力电器股份有限公司 | Water system leakage detection device and method |
| CN109518310B (en) * | 2019-01-15 | 2024-04-02 | 天津工业大学 | System of rejecting spouts board is selected to foreign fiber sorting machine |
| CN110307944B (en) * | 2019-07-30 | 2020-10-16 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Distributed intelligent water leakage detection system and method for deep-sea submersible |
| CN111599245B (en) * | 2020-06-19 | 2022-02-18 | 抚顺抚运安仪救生装备有限公司 | Training equipment for simulating dangerous chemical leakage |
| CN111762456B (en) * | 2020-06-22 | 2022-07-22 | 中国科学院电工研究所 | Electrical equipment sealed cabin system with nitrogen gas directional temperature control function |
| CN114441505B (en) * | 2022-03-17 | 2023-08-18 | 中国工程物理研究院机械制造工艺研究所 | Water vapor in-situ calibration device for Raman probe, calibration method and application |
| CN117213734B (en) * | 2023-11-07 | 2024-01-02 | 新沂天晟新材料有限公司 | Air tightness detection equipment and method for power battery module |
-
2004
- 2004-04-23 CN CN 200410022379 patent/CN1272613C/en not_active Expired - Fee Related
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| CN1570582A (en) | 2005-01-26 |
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