CN109470432A - A kind of detector for tightness and its application method - Google Patents
A kind of detector for tightness and its application method Download PDFInfo
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- CN109470432A CN109470432A CN201811583905.0A CN201811583905A CN109470432A CN 109470432 A CN109470432 A CN 109470432A CN 201811583905 A CN201811583905 A CN 201811583905A CN 109470432 A CN109470432 A CN 109470432A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 122
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 47
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 230000035699 permeability Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 102000007056 Recombinant Fusion Proteins Human genes 0.000 description 1
- 108010008281 Recombinant Fusion Proteins Proteins 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 229960000074 biopharmaceutical Drugs 0.000 description 1
- 230000000973 chemotherapeutic effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 210000000130 stem cell Anatomy 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3218—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators for flexible or elastic containers
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- Examining Or Testing Airtightness (AREA)
Abstract
The present invention provides the detector for tightness and its application method of a kind of gas permeability detection product, and detector for tightness includes detection pipeline and the first gas ducting；The first end for detecting pipeline is equipped with air inlet, and the second end bifurcated for detecting pipeline is equipped with detection mouth and exhaust outlet, and detection mouth is equipped with the first control valve, and exhaust outlet is equipped with the second control valve；Along the direction that the second end of first end towards the detection pipeline of detection pipeline extends, detects and be successively arranged third control valve, pressure reducing valve, regulating valve, first pressure sensor and the 4th control valve on pipeline；The first end of first gas ducting is set on the detection pipeline between the first end and third control valve of detection pipeline, and the second end of the first gas ducting is set on the detection pipeline between the 4th control valve and the second end for detecting pipeline；Along the direction that the second end of first end towards the first gas ducting of the first gas ducting extends, the 5th control valve, second pressure sensor and the 6th control valve are successively arranged on the first gas ducting.
Description
Technical field
The present invention relates to detection device technical field, in particular to a kind of detector for tightness and its application method.
Background technique
The disposable sack of a large amount of pharmacy can be used in the research and development and production process of pharmacy, in bio-pharmaceuticals
The preparation of antibody, vaccine, the incubation of recombinant protein, chemotherapeutic, hormone drug, active drug in such as traditional chemical pharmacy
Journey.Even in the CAR-T target therapy field of accurate medical treatment, the therapy field etc. of beauty stem cell will also use and arrive pharmacy one
Secondary property uses sack.Due to sterile requirement and it is related to producing the expensive problem of kind, it is desirable that the disposable sack of pharmacy
With good sealing performance, and it is unable to leakage gas leakage.
However, during batch production pharmacy disposable sack, it is difficult to ensure that all pharmacy are disposable
The sealing performance of sack is all qualified, so sealing performance detection process can generally be arranged.But it does not apply currently on the market
Device for detecting sealability and matched mature detection method in the disposable sack of pharmacy.
Summary of the invention
The first object of the present invention be to provide it is a kind of convenient for detect itself with gas leakage test sample leakproofness it is close
Envelope property detector.
The second object of the present invention is to provide the application method of above-mentioned detector for tightness.
In order to realize that the first object of the present invention, the present invention provide a kind of detector for tightness.The detector for tightness packet
Include detection pipeline and the first gas ducting；The first end for detecting pipeline is equipped with air inlet, and the second end bifurcated for detecting pipeline is equipped with
Detection mouth and exhaust outlet, detection mouth are equipped with the first control valve, and exhaust outlet is equipped with the second control valve；Along the of detection pipeline
One end towards detection pipeline second end extend direction, detect pipeline on be successively arranged third control valve, pressure reducing valve, regulating valve,
First pressure sensor and the 4th control valve；The first end of first gas ducting is set to the first end and third control of detection pipeline
On detection pipeline between valve processed, the second end of the first gas ducting be set to the 4th control valve and detect pipeline second end it
Between detection pipeline on；Along the first gas ducting first end towards the first gas ducting second end extend direction, first
The 5th control valve, second pressure sensor and the 6th control valve are successively arranged on gas ducting.
As can be seen from the above scheme, by the way that the first gas ducting and detection pipeline is respectively set, and it is arranged on detection pipeline
Pressure reducing valve and regulating valve are inflated convenient for first passing through the first gas ducting to test sample, in advance when in the first gas ducting
When the pressure value of second pressure sensor is close to preset value, then exchange to detection pipeline to be inflated to test sample, then
It adjusts the pressure reducing valve and regulating valve on detection pipeline and controls the air pressure being filled in test sample with accurate, and then convenient for accurate control
Air pressure in test sample reaches preset value, in order to the later period leakage when, can more accurately to the atmospheric pressure value in test sample into
The relevant slip of row calculates.
One specific scheme is that the 5th control valve is arranged close to the first end of the first gas ducting, and the 6th control valve leans on
The second end of nearly first gas ducting is arranged.
As can be seen from the above scheme, the 5th control valve is arranged close to the first end of the first gas ducting, and the 6th control valve is close
The second end of first gas ducting is arranged, convenient for when completely cutting off the first gas ducting and detection pipeline, by the first gas ducting and
Detection pipeline is isolated entirely from.
Another specific scheme is, along the direction that the second end of first end towards the detection pipeline of detection pipeline extends,
The 7th control valve and third pressure sensing are successively arranged on detection pipeline between first pressure sensor and the 4th control valve
Device.
As can be seen from the above scheme, by the way that third pressure sensor is arranged, convenient in first pressure sensor and second pressure
When sensor is mutually calibrated, third pressure value is provided and is mutually calibrated as first pressure sensor, second pressure sensor
Benchmark, in order to eliminate first pressure sensor and second pressure sensor itself, there are the influences of numerical error.
Another specific scheme is additionally provided on the detection pipeline between the 4th control valve and the second end for detecting pipeline
Temperature sensor.
As can be seen from the above scheme, by the way that temperature sensor is arranged, convenient for changing in temperature and then influencing pressure sensing
When the measurement of device, by the temperature of temperature sensor measurement, calculating temperature difference is sought, then the temperature difference is substituted into P=ρ RT/M,
It asks again and calculates corresponding pressure difference, if heating, subtracts corresponding pressure difference value for the pressure value in pressure sensor, if drop
Pressure value in pressure sensor is then added corresponding pressure difference value, carries out temperature-compensating with this and eliminate temperature pair by temperature
The influence of pressure sensor test.
Another specific scheme is that air inlet, exhaust outlet and detection mouth are connected separately with air filter.
As can be seen from the above scheme, by the way that air filter is arranged, convenient for entering the gas of air inlet, arrange from exhaust outlet
Gas out and the gas progress aseptic filtration from detection mouth outflow, to avoid pollution detection sample and environment.
Another specific scheme is that detector for tightness further includes single-chip microcontroller, display, alarm, touch screen and beats
Print machine, single-chip microcontroller are controlled with display, alarm, touch screen, printer, the first control valve, the second control valve, third respectively
Valve, the 4th control valve, the 5th control valve, the 6th control valve, first pressure sensor and the electrical connection of second pressure sensor.
As can be seen from the above scheme, by single-chip microcontroller respectively with the first control valve, the second control valve, third control valve, the 4th
Single-chip microcontroller is convenient in the connection of control valve, the 5th control valve, the 6th control valve, first pressure sensor and second pressure sensor
To the first control valve, the second control valve, third control valve, the 4th control valve, the 5th control valve, the 6th control valve carry out open and
Close control.By single-chip microcontroller respectively to first pressure sensor, second pressure sensor, display, alarm, touch screen and
The connection of printer is preset the pressure value in first pressure sensor and second pressure sensor convenient for single-chip microcontroller, is supervised
Control, show, obtain and print, and the pressure value in the first pressure sensor and second pressure sensor occur it is unstable and not
When unanimous circumstances, corresponding warning function can be carried out.
Another specific scheme is, detector for tightness further includes the second gas ducting, the first of the second gas ducting
End is set on the first gas ducting between second pressure sensor and the 6th control valve, and the second end of the second gas ducting is set to
4th control valve and detect pipeline second end between detection pipeline on, the second gas ducting be equipped with the 8th control valve, second
The pipe diameter of gas ducting is different from the pipe diameter of the first gas ducting.
As can be seen from the above scheme, by the way that second gas ducting different from the first gas ducting diameter is arranged, convenient for choosing
Pipe diameter of corresponding size is inflated test sample of corresponding size, is inflated when to the biggish test sample of volume
When, it is inflated using the biggish detection pipeline of pipeline convenient for saving the time.
Another specific scheme is that the 8th control valve is arranged close to the second end of the second gas ducting.
As can be seen from the above scheme, the 8th control valve is arranged close to the second end of the second gas ducting, convenient in isolation second
When gas ducting and detection pipeline, the second gas ducting and detection pipeline are isolated entirely from.
The second purpose to realize the present invention, the present invention provides the application method of above-mentioned detector for tightness, the uses
Method the following steps are included:
S1: to first pressure sensor preset upper limit value P1, P1 is the pressure reached needed for the detection of being sealed property of detection product
Force value is greater than P2 to second pressure sensor preset upper limit value P2, P1；
S2: closing the first control valve, the second control valve and the 5th control valve, open third control valve, the 4th control valve and
6th control valve is inflated to detection pipeline and the first gas ducting, after inflation, is closed third control valve, is judged the
Whether the pressure value of one pressure sensor and second pressure sensor changes；
S3: if first pressure sensor and the pressure value of second pressure sensor change, close the 4th control valve and
6th control valve, checks whether the pressure value of first pressure sensor and second pressure sensor changes, if first pressure senses
The pressure value of device changes, then replaces the detection pipeline between third control valve and the 4th control valve, re-execute S2；If the
The pressure value of two pressure sensors changes, then replaces the first gas ducting between the 5th control valve and the 6th control valve,
Re-execute S2；
If first pressure sensor and the pressure value of second pressure sensor do not change, first pressure sensor is checked
It is whether consistent with the pressure value of second pressure sensor, if inconsistent, by first pressure sensor and second pressure sensor
Pressure value adjustment is consistent；
S4: closing third control valve, opens the second control valve, will test gas in pipeline and the first gas ducting from row
Port discharge, closes the second control valve, the 4th control valve and the 6th control valve；
S5: opening the first control valve, the 5th control valve and the 6th control valve, carries out to the test sample being set at detection mouth
Inflation closes the first control valve when the pressure value in second pressure sensor reaches P2, opens the second control valve, by the
Gas in one gas ducting is discharged from exhaust outlet, closes the second control valve, the 5th control valve and the 6th control valve；
S6: opening the first control valve, third control valve and the 4th control valve, passes through the gas in decompression valve regulation detection pipe road
Pressure, by adjusting the flow in valve regulation detection pipe road, the speed that control detection pipeline inflates test sample works as first pressure
When the pressure value of sensor reaches P1, third control valve and regulating valve are closed, it is discouraged to be carried out to test sample；
S7: it in bleeding process, is spaced identical time △ t and obtains the pressure difference value △ P of first pressure sensor, and count
Corresponding slip V=△ P/ △ t is calculated, and draws out the curve graph between corresponding slip V and t, when slip maintains
When balance, maintaining the slip balanced is the slip of test sample；
S8: the slip and acceptance value that will test sample compare, if the slip of test sample is lower than acceptance value,
The leakproofness of this test sample is good；
S9: opening the second control valve, closes the first control valve, and the gas that will test in pipeline is discharged from exhaust outlet, closes
Second control valve, the 4th control valve and the 6th control valve.
As can be seen from the above scheme, first pressure sensor preset upper limit value P1 senses second pressure by step S1
Device preset upper limit value P2 tests detection pipeline and the first being sealed property of gas ducting by step S2 and step S3, and right
Wherein first pressure sensor and second pressure sensor are calibrated.Again by step S4 to detection pipeline and the first gas tube
Gas in road is discharged, to avoid the test for the first pressure sensor and second pressure sensor for influencing the later period.Lead to again
It crosses step S5 and test sample is inflated in advance from the first gas ducting, so that pressure value can reach P2 as early as possible in test sample
Value.The rate inflated to test sample is accurately controlled from detection pipeline by step S6 again, so that the pressure in test sample
Value can precisely reach P1 value.After inflation.Test sample pressure value in different time periods is obtained by step S7 again, then to inspection
Sample carries out the calculating of slip, when slip maintains to balance, determines the slip of test sample.Sentenced again by step S8
Whether the leakproofness of disconnected test sample is good.The gas of detection pipeline is discharged finally by step S9, next time is used with eliminating
Influence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of detector for tightness embodiment one of the present invention.
Fig. 2 is the structural schematic diagram of detector for tightness embodiment two of the present invention.
The invention will be further described with reference to the accompanying drawings and embodiments.
Specific embodiment
Embodiment one
Referring to Fig. 1, detector for tightness embodiment one of the present invention includes detection pipeline 1 and the first gas ducting 2.
The first end for detecting pipeline 1 is equipped with air inlet 11, and the second end bifurcated of detection pipeline 1 is equipped with detection mouth 12 and exhaust
Mouth 13 is wherein equipped with the first control valve 61, is equipped with the second control valve 62 at exhaust outlet 13 at detection mouth 12.In air inlet 11, inspection
It surveys at mouth 12 and exhaust outlet 13 and is also respectively connected with equipped with air filter 200.The air filter 200 be used for enter air inlet
11 gas carries out aseptic filtration from the gas flowed out in detection mouth 12 and the gas flowed out from exhaust outlet 13, to avoid dirt
Contaminate test sample and environment.Along the direction that the second end of first end towards the detection pipeline 1 of detection pipeline 1 extends, pipeline 1 is detected
On be successively arranged third control valve 63, pressure reducing valve 71, regulating valve 81, first pressure sensor 91, the 7th control valve 67, third pressure
Force snesor 93, the 4th control valve 64 and temperature sensor 100.Wherein the detection range of third pressure sensor 93 is greater than first
The detection range of pressure sensor 91, the detection accuracy of third pressure sensor 93 are greater than the detection essence of first pressure sensor 91
Degree.
Wherein pressure reducing valve 71 is used to control the air pressure size of the gas flowed into detection pipeline 1, and regulating valve 81 is for controlling
The flow of the gas in detection pipeline 1 is flowed into, first pressure sensor 91 flows into test sample for detecting from detection pipeline 1
Atmospheric pressure value.
The first end 21 of first gas ducting 2 is set on the detection pipeline 1 between air inlet 11 and third control valve 63, the
The second end 22 of one gas ducting 2 is set on the detection pipeline 1 between the 4th control valve 64 and temperature sensor 100.Along
The direction that the second end 22 of the first end 21 of one gas ducting 2 towards the first gas ducting 2 extends, on the first gas ducting 2 successively
Equipped with the 5th control valve 65, second pressure sensor 92 and the 6th control valve 66.Preferably, the 5th control valve 65 is filled close to first
The first end 21 of feed channel 2 is arranged, and the 6th control valve 66 is arranged close to the second end 22 of the first gas ducting 2.Open the 6th control
First gas ducting 2 can be connected to by valve 66 processed with detection pipeline 1.
Wherein second pressure sensor 92 is used to detect the atmospheric pressure value flowed into test sample from the first gas ducting 2.Its
The detection accuracy of middle second pressure sensor 92 is less than the detection accuracy of third pressure sensor 93.
Before detection, third pressure sensor 93 is for carrying out school to first pressure sensor 91, second pressure sensor 92
It is quasi-.In the detection pipeline 1 and the first gas ducting 2 of sealing, by the way that third pressure sensor 93 is arranged, first pressure biography is given
The calibration benchmark that sensor 91 and second pressure sensor 92 are mutually calibrated.In order to eliminate first pressure sensor 91 and the second pressure
The influence that force snesor 92 generates experimental result due to the error of itself.Such as: when wherein first pressure sensor 91 and
When the pressure value of three pressure sensors 93 is equal, the pressure value of second pressure sensor 92 is adjusted to and first pressure sensor
91 is consistent with third pressure sensor 93；When first pressure sensor 91, second pressure sensor 92 and third pressure sensor
When 93 pressure value is incremented by successively, the pressure value of first pressure sensor 91 and third pressure sensor 93 is adjusted to and second
Pressure sensor 92 is consistent.
Whether the gas that wherein the first control valve 61 is used to control detect in pipeline 1 and the first gas ducting 2 is from detection mouth
It is flowed out in 12.Second control valve 62 is used to control the gas in detection pipeline 1 and the first gas ducting 2 whether from exhaust outlet 13
Outflow.Third control valve 63 is used to control whether gas to flow into detection pipeline 1 from air inlet 11.4th control valve 64 is used for
Connection or isolation third pressure sensor 93 and second pressure sensor 92.5th control valve 65 for control gas whether from into
Port 11 flows into the second gas ducting 3.7th control valve 67 is for being connected to or completely cutting off first pressure sensor 91 and third
Pressure sensor 93.
Wherein temperature sensor 100 is for eliminating temperature to first pressure sensor 91, second pressure sensor 92 and the
The influence for the pressure value that three pressure sensors 93 are measured.According to P=ρ RT/M, it is known that the variation of temperature has influence to atmospheric pressure value,
And it is proportional between P and T.When heating causes atmospheric pressure value to become larger, the temperature difference that can be will heat up is substituting in P=ρ RT/M,
Draught head brought by the temperature difference is acquired, then the atmospheric pressure value measured is subtracted corresponding draught head to obtain at identical temperature
Atmospheric pressure value, measured with eliminating temperature to first pressure sensor 91, second pressure sensor 92 and third pressure sensor 93
Atmospheric pressure value measurement influence.
Detector for tightness embodiment of the present invention further include single-chip microcontroller (not shown), display (not shown),
Alarm (not shown), touch screen (not shown) and printer, the single-chip microcontroller respectively with display, alarm, touching
Touch screen, printer, the first control valve 61, the second control valve 62, third control valve 63, the 4th control valve 64, the 5th control valve 65,
6th control valve 66, the 7th control valve 67, first pressure sensor 91, second pressure sensor 92 and third pressure sensor 93
Electrical connection.
By single-chip microcontroller respectively with the first control valve 61, the second control valve 62, third control valve 63, the 4th control valve 64,
The electrical connection of 5th control valve 65, the 6th control valve 66, the 7th control valve 67, for controlling the control of the first control valve 61, second
Valve 62, third control valve 63, the 4th control valve 64, the 5th control valve 65, the 6th control valve 66, the 7th control valve 67 opening and
Closure.
It is electrically connected respectively with first pressure sensor 91, second pressure sensor 92 and touch screen by single-chip microcontroller, it can
Prior to the preset pressure value of first pressure sensor 91 and second pressure sensor 92 is respectively set on touch screen, then pass through monolithic
Machine can be pressed with monitoring whether first pressure sensor 91 and second pressure sensor 92 respectively reach preset pressure value in first
When the pressure value of force snesor 91 reaches the preset pressure value of first pressure sensor 91, by single-chip microcontroller, the first control is closed
Valve 61, and open the second control valve 62；And second pressure sensor 92 can be reached in the pressure value of second pressure sensor 92
When preset pressure value, by single-chip microcontroller, third control valve 63 and regulating valve 81 are closed.
It is electrically connected respectively with first pressure sensor 91, second pressure sensor 92 and display by single-chip microcontroller, just
First pressure sensor 91, the pressure value of second pressure sensor 92 and third pressure sensor 93 are obtained in single-chip microcontroller, and anti-
Display is fed to show.
It is electrically connected respectively with first pressure sensor 91, second pressure sensor 92 and alarm by single-chip microcontroller, when
Single-chip microcontroller before detection, in the detection pipeline 1 and the second gas ducting 2 of connection, monitors first pressure sensor 91, second
When the pressure value of 93 three of pressure sensor 92 and third pressure sensor is constantly in jiggly state, single-chip microcontroller can be triggered
Alarm issues warning note, to remind user's detection pipeline 1 or the second gas ducting 2 that there are gas leak phenomenons.Work as monolithic simultaneously
Machine before detection, in closed detection pipeline 1 and the second gas ducting 2, monitors first pressure sensor 91, second pressure
In the case that the pressure value of 93 three of sensor 92 and third pressure sensor is inconsistent, single-chip microcontroller can also trigger alarm sending
Warning note, to remind user by 93 three of first pressure sensor 91, second pressure sensor 92 and third pressure sensor
Pressure value adjustment it is consistent.
It is electrically connected, is made with first pressure sensor 91, second pressure sensor 92 and printer respectively by single-chip microcontroller
The pressure value that different time measures first pressure sensor 91 and second pressure sensor 92 can be stored and analyze by obtaining single-chip microcontroller
Data, and printed data and data analysis result by printer.
The application method of detector for tightness embodiment of the present invention is as follows:
Test sample in the present embodiment is the disposable sack of pharmacy.
S1: on touch screen to 91 preset upper limit value P1 of first pressure sensor, in touch screen to second pressure sensor
92 preset upper limit value P2, P1 are slightly larger than P2.Wherein P1 is the pressure value reached needed for the disposable sack of pharmacy, and P1 is system
Attainable maximum gas pressure value under the disposable sack plastic deformation of medicine.
S2: closing the first control valve 61, the second control valve 62 and the 5th control valve 65, opens third control valve the 63, the 4th
Control valve 64, the 6th control valve 66 and the 7th control valve 67 are inflated to detection pipeline 1, the first gas ducting 2, have inflated
Bi Hou closes third control valve 63 by display and checks and judge first pressure sensor 91, second pressure sensor 92
Whether change with the pressure value of third pressure sensor 93.
S3: if the pressure value of first pressure sensor 91, second pressure sensor 92 and third pressure sensor 93 occurs
The 7th control valve 67, the 4th control valve 64 and the 6th control valve 66 are closed in variation, by display, check that first pressure senses
Whether the pressure value of device 91, third pressure sensor 93 and second pressure sensor 92 changes, if first pressure sensor 91
Pressure value changes, alarm equipment alarm, then replaces the detection pipeline 1 between third control valve 63 and the 7th control valve 67, weight
It is new to execute S2；If the pressure value of third pressure sensor 93 changes, alarm equipment alarm, then the 7th control valve 67 and the are replaced
Detection pipeline 1 between four control valves 64, re-executes S2；If the pressure value of second pressure sensor 92 changes, alarm
Device alarm, then replace the first gas ducting 2, re-execute S2.
If the pressure value of first pressure sensor 91, second pressure sensor 92 and third pressure sensor 93 does not become
Change, by display, checks the pressure value of first pressure sensor 91, second pressure sensor 92 and third pressure sensor 93
Whether consistent, if inconsistent, alarm equipment alarm reminds user by first pressure sensor 91, second pressure sensor 92 and the
The pressure value adjustment of three pressure sensors 93 is consistent.
S4: closing third control valve 63, opens the second control valve 62, will test the gas in pipeline 1 and the first gas ducting 2
Body is discharged from exhaust outlet 13, closes the second control valve 62, the 4th control valve 64, the 6th control valve 66 and the 7th control valve 67.
S5: opening the first control valve 61, the 5th control valve 65 and the 6th control valve 66, the detection to being set in detection mouth 12
Sample is inflated, and when the pressure value in second pressure sensor 92 reaches P2, is automatically closed the first control valve 61, opens the
Two control valves 62, the gas in the first gas ducting 2 is discharged from exhaust outlet 13, closes the control of the second control valve the 62, the 5th
Valve 65 and the 6th control valve 66.
S6: the first control valve 61, third control valve 63, the 4th control valve 64 and the 7th control valve 67 are opened, decompression is passed through
Valve 71 adjusts the air pressure in detection pipeline 1, adjusts the flow in detection pipeline 1,1 pair of pipeline inspection of control detection by regulating valve 81
The speed of sample inflation is automatically closed third control valve 63 and adjusts when first pressure sensor 91 reaches the P1 of setting
Valve 81, it is discouraged to be carried out to test sample.
S7: it in bleeding process, is spaced identical time △ t and obtains and record the pressure difference value of first pressure sensor 91
△ P, and calculate corresponding slip V=△ P/ △ t, and draw out the curve graph between corresponding slip V and t, when letting out
When leak rate maintains balance, maintaining the slip balanced is the slip of test sample.
S8: the slip and acceptance value that will test sample compare, if the slip of test sample is lower than acceptance value,
The leakproofness of this test sample is good.
S9: opening the second control valve 62, closes the first control valve 61, will test gas in pipeline 1 from 13 row of exhaust outlet
Out, the second control valve 62, the 4th control valve 64, the 6th control valve 66 and the 7th control valve 67 are closed.
Single-chip microcontroller in the present embodiment also has time computing function.When the disposable sack of pharmacy to same model
After carrying out multiple sealing propertytest, can obtain from discouraged initial time reach slip balance terminate the time between when
Between be spaced mean value T.It, can be prior in touch screen when testing again disposable the being sealed property of sack of the pharmacy of this model
Input time interval T, control single chip computer after losing heart and starting, by time interval T and then the identical time △ t in interval with
The pressure difference value △ P of first pressure sensor 91 is obtained and recorded, and calculates corresponding slip V=△ P/ △ t, at this time
Slip is the slip of test sample.Since the method obtain always to discouraged termination compared to losing heart and record first
The pressure difference value △ P of pressure sensor 91, and the operation of corresponding slip V=△ P/ △ t is calculated, reduce single-chip microcontroller
Workload.
Embodiment two
Referring to fig. 2, detector for tightness embodiment of the present invention two with embodiment one the difference is that, leakproofness of the present invention
Detector embodiment two further includes the second gas ducting 3 and third gas ducting 4.
The first end 31 of second gas ducting 3 is filled set on first between second pressure sensor 92 and the 6th control valve 66
In feed channel 2, the second end 32 of the second gas ducting 3 be set to the first gas ducting 2 second end 22 and temperature sensor 100 it
Between detection pipeline 1 on.
The 8th control valve 68 is equipped in the second gas ducting 3, it is preferable that the 8th control valve 68 is close to the second gas ducting 3
Second end 32 be arranged.The 8th control valve 68 is opened, the second gas ducting 3 is connected to detection pipeline 1.
The first end 41 of third gas ducting 4 and the first end 31 of the second gas ducting 3 mutually cross, third gas ducting
4 second end 42 is set on the detection pipeline 1 between the second end 32 and temperature sensor 100 of the second gas ducting 3.
The 9th control valve 69 is equipped in third gas ducting 4, it is preferable that the 9th control valve 69 is close to third gas ducting 4
Second end 42 be arranged.The 9th control valve 69 is opened, third gas ducting 4 is connected to detection pipeline 1.
The pipe diameter of first gas ducting 2, the second gas ducting 3 and third gas ducting 4 is sequentially increased.
According to the different disposable sack sizes of pharmacy, choose different pipelines to the disposable sack of pharmacy into
Row inflation.Such as detection 50mL-1L pharmacy disposable sack when, by detection pipeline 1 to the disposable bag of pharmacy
Son is inflated；When detecting the disposable sack of pharmacy of 5L-100L, pharmacy is disposably made by the first gas ducting 2
It is inflated with sack；When detecting the disposable sack of pharmacy of 200L-1000L, the 8th control valve 68 is opened, passes through second
Gas ducting 3 is inflated the disposable sack of pharmacy；When detecting the disposable sack of pharmacy of 1500L-5000L,
The 9th control valve 69 is opened, the disposable sack of pharmacy is inflated by third gas ducting 4.Using of corresponding size
Gas ducting is inflated the disposable sack of pharmacy of corresponding size, and the gas ducting small compared to pipe diameter is to appearance
Time saving, the gas ducting big compared to the pipe diameter pharmacy one small to volume when the disposable sack of the big pharmacy of product is inflated
When secondary property is inflated using sack, not it is easier that the small disposable sack of pharmacy of volume is burst.
Single-chip microcontroller is also connect with the 8th control valve 68 and the 9th control valve 69 respectively simultaneously, can be used for controlling the 8th control 68
With the opening and closing of the 9th control valve 69.
Embodiment described above, only preferred embodiments of the invention are not therefore the Fan Yiben to limit the scope of the present invention
The equivalent change or modification that structure, feature and principle described in patent application the scope of the patents is done should be included in of the invention special
In sharp application range.
Claims (9)
1. a kind of detector for tightness, it is characterised in that:
The detector for tightness includes detection pipeline and the first gas ducting；
The first end of the detection pipeline is equipped with air inlet, and the second end bifurcated of the detection pipeline is equipped with detection mouth and exhaust
Mouthful, the detection mouth is equipped with the first control valve, and the exhaust outlet is equipped with the second control valve；
Along the direction that the second end of first end towards the detection pipeline of the detection pipeline extends, on the detection pipeline according to
It is secondary to be equipped with third control valve, pressure reducing valve, regulating valve, first pressure sensor and the 4th control valve；
The first end of first gas ducting is set to the institute between the first end and the third control valve of the detection pipeline
It states on detection pipeline, the second end of first gas ducting is set to the second of the 4th control valve and the detection pipeline
On the detection pipeline between end；
Along first gas ducting first end towards first gas ducting second end extend direction, described first
The 5th control valve, second pressure sensor and the 6th control valve are successively arranged on gas ducting.
2. detector for tightness according to claim 1, it is characterised in that:
5th control valve is arranged close to the first end of first gas ducting, and the 6th control valve is close to described first
The second end of gas ducting is arranged.
3. detector for tightness according to claim 1, it is characterised in that:
Along the direction that the second end of first end towards the detection pipeline of the detection pipeline extends, Yu Suoshu first pressure is passed
The 7th control valve and third pressure sensor are successively arranged on the detection pipeline between sensor and the 4th control valve.
4. detector for tightness according to claim 1, it is characterised in that:
Temperature sensor is additionally provided on the detection pipeline between 4th control valve and the second end of the detection pipeline.
5. detector for tightness according to claim 1, it is characterised in that:
The air inlet, the exhaust outlet and the detection mouth are connected separately with air filter.
6. detector for tightness according to claim 1, it is characterised in that:
The detector for tightness further includes single-chip microcontroller, display, alarm, touch screen and printer, the single-chip microcontroller difference
It is controlled with the display, alarm, touch screen, printer, first control valve, second control valve, the third
Valve, the 4th control valve, the 5th control valve, the 6th control valve, the first pressure sensor and described second
Pressure sensor electrical connection.
7. detector for tightness according to any one of claims 1 to 6, it is characterised in that:
The detector for tightness further includes the second gas ducting, and the first end of second gas ducting is set to second pressure
On first gas ducting between force snesor and the 6th control valve, the second end of second gas ducting is set to
On the detection pipeline between 4th control valve and the second end of the detection pipeline, second gas ducting is equipped with
8th control valve, the pipe diameter of second gas ducting are different from the pipe diameter of first gas ducting.
8. detector for tightness according to claim 7, it is characterised in that:
8th control valve is arranged close to the second end of second gas ducting.
9. the application method of detector for tightness according to claim 1, which is characterized in that the application method include with
Lower step:
S1: to first pressure sensor preset upper limit value P1, the P1 is the pressure reached needed for the detection of being sealed property of detection product
Force value is greater than the P2 to second pressure sensor preset upper limit value P2, the P1；
S2: closing first control valve, second control valve and the 5th control valve, open the third control valve,
4th control valve and the 6th control valve are inflated to the detection pipeline and first gas ducting, inflation
After, close third control valve, judge the first pressure sensor and the second pressure sensor pressure value whether
It changes；
S3: if the first pressure sensor and the pressure value of the second pressure sensor change, the described 4th is closed
Control valve and the 6th control valve, check whether the first pressure sensor and the pressure value of the second pressure sensor become
Change, if the pressure value of first pressure sensor changes, replaces between the third control valve and the 4th control valve
The detection pipeline, re-execute S2；If the pressure value of second pressure sensor changes, the 5th control is replaced
First gas ducting between valve and the 6th control valve, re-executes S2；
If the first pressure sensor and the pressure value of the second pressure sensor do not change, first pressure is checked
Whether force snesor and the pressure value of the second pressure sensor consistent, if inconsistent, by the first pressure sensor and
The pressure value adjustment of the second pressure sensor is consistent；
S4: closing the third control valve, second control valve is opened, by the detection pipeline and first gas ducting
In gas be discharged from the exhaust outlet, close second control valve, the 4th control valve and the 6th control valve；
S5: opening first control valve, the 5th control valve and the 6th control valve, at the detection mouth
Test sample is inflated, and when the pressure value in the second pressure sensor reaches the P2, closes first control
Valve opens second control valve, the gas in first gas ducting be discharged from the exhaust outlet, closing described the
Two control valves, the 5th control valve and the 6th control valve；
S6: first control valve, the third control valve and the 4th control valve are opened, decompression valve regulation institute is passed through
The air pressure in detection pipeline is stated, by the flow in detection pipeline described in the adjusting valve regulation, controls the detection pipeline pair
The speed of the test sample inflation closes the third when the pressure value of the first pressure sensor reaches the P1
Control valve and the regulating valve, it is discouraged to be carried out to test sample；
S7: it in bleeding process, is spaced identical time △ t and obtains the pressure difference value △ P of the first pressure sensor, and count
Corresponding slip V=△ P/ △ t is calculated, and draws out the curve graph between corresponding slip V and t, when slip maintains
When balance, maintaining the slip balanced is the slip of the test sample；
S8: the slip of the test sample is compared with acceptance value, if the slip of the test sample is lower than described
Acceptance value, then the leakproofness of this test sample is good；
S9: opening second control valve, closes first control valve, by the gas in the detection pipeline from the exhaust
Mouth discharge, closes second control valve, the 4th control valve and the 6th control valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583905.0A CN109470432B (en) | 2018-12-24 | 2018-12-24 | Tightness detector and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583905.0A CN109470432B (en) | 2018-12-24 | 2018-12-24 | Tightness detector and application method thereof |
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| CN109470432A true CN109470432A (en) | 2019-03-15 |
| CN109470432B CN109470432B (en) | 2024-08-27 |
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| CN201811583905.0A Active CN109470432B (en) | 2018-12-24 | 2018-12-24 | Tightness detector and application method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825993A (en) * | 2019-05-16 | 2021-12-21 | Ft系统公司 | Method and apparatus for detecting leaks in sealed containers |
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|---|---|
| CN109470432B (en) | 2024-08-27 |
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