JPS58162830A - Method and device for detecting leakage of air-gas mixture from system sealed - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to measurement techniques and leak monitoring of closed containers or systems (related to [7. and a device for carrying out the method.

This invention can be used in the chemical, oil and gas industry, as well as in the 15Vc aircraft and automobile industry, towed construction belt, and for leakage monitoring of various closed systems, including D civil engineering, Longqin technology. It is applied to many D fields in the national economy.

Leakage of air-gas mixture from sealed threads
*11 for implementing detection methods and stiffness methods
The main requirements to be met are defects such as openings and cracks.
The gas ejects to the extent of l and increases through the defect i.
Quantitative estimation of the amount of liquid mixture.

The mass spectrometry 1% I/Ride ThermocathLytic, ultrasonic, and infrared leak testers that have been known and used so far do not completely satisfy the above-mentioned Kuyasu requirements and are limited to limited areas. Quantitative estimation of the air-gas a combination leaking from the defect can be achieved by blazing the tester using a simulated leak control method.
It was possible to give it. The estimate was low, due to pressure changes and changes in the flow surrounding the air-gas mixture.

In this way, the measurement error associated with halide leak testers is due to the accumulation of cooling of the sensor during measurement, and
The 4-difference cannot be avoided even if the sensor is purified with medium-grade gas or clean gas.

Furthermore, difluorochloromethane, or a refrigerant such as difluorochloromethane, makes it impossible to prepare a homogeneous working air-gas mixture and uniformly fill the enclosed space of the monitoring object. Furthermore, even if the leak tester was completely plated with a child actor to control the leak, the routine estimation of the air-gas flow was impractical because of the negative effect on the fluctuation of the ejection of local defects.

The latter drawback also occurs in mass spectrometer leak testers.

Since known gas leak testers operate erratically when used for leak monitoring by probe technology, it is difficult to determine the sensitivity of the leak tester! Partially resolved with Kimari plate [- for child actors to control leakage.

The leak-based purchase selection is made starting from the next ζ.

Q + - (0, 1 ~ 1) C2!1) Here, the test gas passing through the Ql controlled detection point, that is, N20 Q flow ambiguous volume ratio (t - s -'), C
This is 1 out/in (t.5-1) with 2 allowed.

The leak tester OS degree is calculated by the following equation (2).

5Q=Q + L min/L + where Q, the probability ratio (t・S-') that the measured test gas, i.e. N20, passes through the controlled leak point, L, from the controlled leak 1 shift (nlv) read by leak tester @4, -1n is at least 3ft of duck background voltage! I is the smallest readable throat housing (mv) that can be trusted by a leak tester.

Controlled leaks themselves are a concern), and their properties change over time, so before testing the leak, soak it in alcohol and carefully measure the number and size of the bubbles. However, the technique described above is complex and requires a number of measurements of the air-gas mixture passing through a rupture or puncture-type discontinuous defect with respect to the flow rate ratio of the air-gas mixture. This is unlucky when extracting the air-gas mixture to be analyzed from the narrow side of a closed system being monitored.The gas flow passing through the defect is subject to the influence of the surrounding medium. 3 due to the fact that the test gas O loss increases due to exposure.
I can explain it. The pressure, PCI, flow rate, and flow path through the defect are affected by the amount of test gas in the 7.9 gas-gas island body.

The air-gas mixture under analysis 1 is formed into a test gas tube with a volumetric concentration lcn in a closed system, 1 exiting through a discontinuous lining-type defect, and a circumference 1! A test gas stream having a local volume concentration [C2 is formed in the medium. Some of it has a concentration * * C, and is lost to the atmosphere from the surface being monitored, and another part has a constant value C4 and is exposed to the probe (
sangler), and the flow rate ratio increases s (bo
oster) into the working vessel along a conveying path in a continuous stream. In this way, a combination of 9 gases and gases a containing the test gas whose volume -1C4 is expressed by the following equation passes through the working vessel.

C,=C2-C.

Here, C4 is -[(V
11)lf (Vot,'
l) Part of the test gas in the air-gas S combination under analysis (Voz
, *) As a result, the leak tester's sensitivity lft estimation (determined chima replation diagram is particularly inaccurate when extracting air-gas samples using probe techniques). The inaccuracy caused by the loss of the test gas in the air-gas fraction which dissipates into the surrounding medium is large and prevents quantitative estimation of the mass leaking from the defect. In addition, when the sensitivity of the leak tester decreases (70 to 5 years), only large defects can be detected.

The foregoing points are demonstrated analytically. The object being monitored by the probe technique - ■ The air extracted through the surface defect - The concentration of the test gas, i.e. N20, in the gas a combination is Cm1n - f'y'< f1 + 92) = 92A Same, '
91 )) is equal to f21 '4). Here Cr
r+1n test gas i.e. N20 II monitored by an emitter in the air-gas mixture extracted from the defect and analyzed
k is a small concentration change (VOt, -bt, 1 is the ratio of the air-gas mixture analyzed by the detection probe conveyance path and operating valve aitau (L 5-1). f2 is an unlucky tiger. The air-gas mixture to be analyzed passing through the mold defect υ flow cage ratio (t
・5-1) Considering the flow rate ratio f of the analyzed air-gas mixture dissipated into the medium of O*a, equation (4) becomes as follows: Cm1n =
(f2-f5'I/f, (,5') infrared 1aLr) A gas leak tester using optical absorption detects the test gas (N20
It has a concentration measurement value of 1. III [OQ that can be obtained from the following equation = Cm1n flp
=z const (6) where Q, Detection of air-gas a association I! passing through a discontinuous defect. T1F@
A small pot IN! The pupil ratio (t-difference) is the pressure of the air-gas mixture in the pouch-actuated container (P&). f5) Formula 6C
By substituting the mtn17) value into the formula <6) and converting it into an appropriate Kf form, the following formula is obtained.

Q= (f2-r3)p= Con5t <7)
Assuming that the flow rate ratio of the air-gas mixture analyzed through the discontinuous defect is constant, a gas leak tester using optical absorption of infrared radiation to extract the air-gas by probe technology can be used. , f\# depend on the change in the pressure p of the analyzed air-gas mixture occurring in each vessel, and on the flow rate ratio t of the #j kinetics body dissipating into the surrounding medium.

One of the special features of all gas leak testers known to date is that the reliable general exhaustion Cm1n that can be emitted by the radiation detector is expressed as the variable expressed by equation i5). ! It has F signs. s' passing through the working vessel
p Any change in the pressure of the air-gas mixture will cause an increase in the s1 value.

One of the prior art for leak detection of air-gas mixtures from closed systems
298876 CA*C01n 21/34.1971
．． 31.16 issue) will be monitored! An air-gas mixture expelled from the surface of a closed system? The absorption band of the test gas in the air-gas a mixture is guided into the vessel and exposed to IR-straight UD radiation @r, whose robustness changes due to the change in the air-gas mixture in the working vessel. According to the above method, the test gas is measured at the first order of the flow rate ratio.

Since the weight of nitrogen oxides is balanced with air, the working air prepared by N2QK - gas ai! r-bodies, helium gas and refrigerants? Which of the objects to be monitored in the VC comparison? -IIK distribution throughout the period, increasing m-constant WI warmth.

Detection of air-gas leakage from closed systems as known in the current state of the art
428,242, cl, Go1m3/()4.197
4.5.15) is an actuator with an inlet and an outlet connected to the kit for extracting an air-gas mixture from a sealed system surface! equipment, vacuum pump, IR over UV radiation meter installed at the opening of the working vessel, radiation switch, and communication between the radiation source and the opening of the working vessel.
Direction of radiation across ii8 Yc#&f distributed
It consists of a 1mIi device! An IT radiation switch and a modulator form the reference and actuation optical channel (an IR-to-UV radiation ejector is placed across the beam of radiation that has passed through a container containing the air-gas mixture) and a comparison circuit. The output of the comparator circuit is electrically connected to the input of the recording member. Actually USSR inventor certificate 129887
Gas analysis tester protected by 6.

Analyze the air-gas mixture using the apparatus. That is, the test gas is measured at the first dynamic flow rate ratio. This is conducting the air-gas mixture continuously into the working vessel. Extracting the air-gas a combination from the surface of the monitored closed system involves test gas D losses. This is because the gas-gas mixture to be analyzed does not come into direct contact with the closed system, but is extracted from the narrow side of the closed system by the extraction 5, which sharply cuts the surface.

The main purpose of this invention is from a closed system.

Due to the method of ejecting the leakage of the air-gas mixture and the preset test gas (concentration) in the air-gas mixture contained in the working vessel, the flow rate ratio of the air-gas mixture is the highest. ■ A high estimate of nectar leaking in the execution of the device.

directing the air-gas agglomerate extracted from the closed system to be monitored into a working vessel and bombarding it with IR-over-UV radiation modulated by the absorption band of the test gas in said warm body; In a method for leaking an air-gas mixture from a closed system by obtaining S1 and C1 in the air-gas mixture in a working vessel by changing the radiation intensity If, the present invention provides Concentrated test gas lt in mixed body f production container
The test gas 'af cough C0 in the closed system is equal to the current volume of the test gas 'af C0' and the air-gas mixture is concentrated from the lomethane in the air-gas mixture.
By determining the leakage based on the flow rate ratio Q of the air-gas mixture from a closed system derived from the linear equation % All stated objectives have been achieved.

Q=V*ΔP/l l C,=C6 where V is the volumetric capacity of the operating IF device.

Kui #Air-gas l in IJ container! II. Prior to introducing the combination, the working volume 4 is IR-crossed with a gas that does not absorb UV radiation, and the test gas in the air-gas a combination is
In order to increase the conversion within the explosion chamber S, it is preferable to draw the inside of the working container below atmospheric pressure.

■ The equipment for carrying out the above-mentioned method must be monitored to eject ■ air-gas mixture leakage from a closed system. 1. Combine the inlet and outlet connected to a vacuum pump for.
Nine explosive containers, an IR or UV radiation source provided at the inlet opening of the operating container, a radiation switch, and radiation** and operation 11
consisting of four FVI devices arranged in sequence across the inlet opening of the IS and the passageway, forming a reference part aperture and an actuating part aperture;
An IR\TriUV radiation detector is provided across the optical path passing through the container containing the air-gas a@. The radiation jet S is electrically connected to the input of a comparator circuit, and the output of the comparator circuit is electrically connected to the human power VC of the recording member. According to this invention, the population of the working vessel VC@
The conveyor pump shown, nine solenoid valves connected to the inlet and outlet of the operating device, a pressure transducer installed in the operating volume S, and a comparison (b) electrically connected to the human power of the O pond. a test gas enrichment setter in an air-gas mixture in a sealed system, a timer whose output is connected to the other output of the comparator circuit, 7'-p input b is connected to each output for comparison, and one of the open/open outputs is connected to the timer input.

In addition, a control unit, one of which is connected to the side-turning output and the other of which is connected to the human power of each solenoid operated by a solenoid, calculates the flow rate ratio of the air-gas mixture escaping from the closed system according to a predetermined equation. In order to determine the D calculation element, one data input of the calculation element is connected to the output of the comparison circuit, the other data input is connected to the output of the timer and control unit, and the output of the fm calculation element is connected to the input of the recording member. wIl
It is covered. It is composed of 44 actuating setters connected to the operation element θ and the setter of each volume.

This θ device is sent to a container (hlowing).
Preferably, a time setter is connected to the data input of the unit.

Air-gas l1 from a closed system disclosed here
11 Combined Leakage and Ejection Method and School Method for Implementing It The test gas concentration in the air-gas mixture in the working vessel is equal to the test gas concentration in the air-gas mixture in the sealed system. By doing so, the flow rate of the air-gas mixture is measured at a flow rate of about 1 lIL.

This invention will be explained with reference to the drawings and detailed examples.

Air leaking from a closed system through discontinuous wrinkle defects
The method of detecting the gas mixture is to consider the air-gas mixture extracted from the surface of a closed system as the test gas concentration [C, in the heated air-gas mixture in the operating vessel]. Previous j5af in the system! The D test scum concentration in the r body is introduced into the working vessel until it becomes equal to the current value CoVC.

The air-gas mixture within the working vessel is irradiated with LR or UV radiation tuned to the test gas absorption band. This strong change in D radiation is rich in information regarding the concentration of the test gas C1 in the air-gas mixture in the working vessel.3 Next, the concentration of the test gas C1 becomes equal to C8. The time in the enclosure is measured and the effective pressure change in the O operating vessel is measured for 2 minutes from the start of the introduction of the air-gas mixture until the test gas setting is equal to the sealing obtained from the linear equation: The leakage is determined by the flow rate ratio Q of the air-dust mixture leaking from the υ system.

Q2■・△P/l l U, = C0 ('?) Here, V is the width of the container.

In order to more accurately determine the leakage of the air-dust mixture, the operation '8 W vc! Before introducing the f+ period mixture, vJ valley i! Absorb LJV radiation across Sl/CI R 1~
The retest gas concentration in the air-gas mixture in the working container is increased by blowing out the gas and reducing the pressure to below atmospheric pressure.

The aforementioned method reduces the flow rate ratio of the air-dust mixture due to the aperture defect of the closed thread to a high f! We1t can be detected in one go
1-possible VC, the above process occurs statically. That is, the air-dust mixture covers the total volume of the working vessel fP4 [
7. If the explosion does not flow into the culm, it will happen. In this way, the pressure and temperature of the surrounding body can be changed to 1N! The effect that honey has on the air-gas mixture f) flow rate ratio is removed.

Equipped with a method for ejecting air-gas mixtures from a closed system! The air-gas mixture is extracted from the surface of a sealed system, shown as pipeline segment 2 in the figure. It is connected to the inlet of 43 working volumes through a pump 6 and 7 T1 units installed in the working tank. 8 solenoid valves for the pond
i37) is provided at the outlet and is connected to the vacuum pump 9 through it! being met. IR and UV radiation I# is provided at each of the input ports 43 and D inlet openings 10. Across the DIR radiation optical path between the IR radiation source 11 and the entrance aperture 10 is a radiation switch 12 and a fli! ] device t3 is provided to form a reference beam path and a working beam path.

A UV radiation detector 4 common to both optical channels is distributed across the radiation passing through the container 3 containing the air-gas mixture. In other words, in the illustrated example '7), infrared detection I! ! 14 sensor 15 is the comparison (b) path 17
It is electrically connected to the v input 16 and receives all information from the reference optical path and the working optical path. Comparison circuit 17'1) Output is W
19 elements are connected to the data person TJ18VC1 and the air-gas mixture from a closed system based on a predetermined equation (rg) 61! Determine the quantity ratio.

It has a pressure transducer 2υ that communicates with the cargo handling and storage space 63, and is electrically connected to the data input 21 of the pressure transducer 2 (control unit 22'7). Control - Units) 220 control - Output 23 solenoid valve 7.8
The paddle is electrically connected to the ladle, valve, and table to transmit signals. The control output 24.25Vi of the control unit 22 is electrically connected to the solenoid valve 7.8 and transmits a signal to close the valve. The control output 26 of the field unit 22 is electrically connected to the radiation switch 12 .

Release Itt switch 12? The shutter 27 is moved forward by the ffi step motor 28. It will work in a few seconds if you recommend it. f! IIJ N output 26 and step motor 28
sends a signal 7 to start the control unit 220;
A θ signal is sent out to correct the stoppage of the control output 29.

This device has a light source 30 and a photodiode 3 located on one side of a shutter 27 with an opening 32 of a shimmering switch 12.
It has a synchronization detection device consisting of 1. The output of the photodiode 31 of this synchronization detection device is electrically connected to the data input 33 of the control unit 22.

In this embodiment, the IR light source 11 is comprised of a Nt-Cr metal wire coil 34 mounted within a reflector 35. The modulator 13 has three gas filters 36, 37,
38, the filter 36 is filled with nitrogen oxide, the filter 37 is filled with nitrogen gas, and the filter 38 is filled with a gas with special notes equal to the spectral characteristics of N20 used as the Vi test scum.

The data output 39 of the control unit 22 is connected to the calculation element 19'7.
) is electrically connected to the input 1 and reaches the signal f@ relating to the pressure of the air-gas mixture in the working vessel 30. control unit 22
The control output 4() is electrically connected to the input of tie ff-41.
! connected, tie ff-41'7) data output 42
The input of the calculation element 19 (respectively connected to the control input 43 of the timer 41?rFi ratio-output of the circuit 17 is used in a t'g!c manner, and a signal to stop the timer 41 is transmitted. This ensures that the test gas concentration C3 in the air-gas mixture in the operating IBB is equal to the current concentration coVC of the test gas in the air-gas mixture in the system to be monitored. Measure the time taken.

Control unit 220 control input method 44.45 is compared (b)
Approximately 17 outputs are electrically connected to each other when the concentration of the test gas in the operating IJ device 3 reaches C1vc, the (information) signal regarding the pressure of the air-gas ff combination in the operating IFils. A signal is applied to the human power 44 to transmit the totc from the control unit 22 to the computing element totc. In addition, a signal is sent from the control unit 22 through the output 23 to the solenoid valves 7 and 8 to open the control valve.
Ka4! S'C7JI will be first. This allows ffrth
The is-den is started. A setter 46 of the test gas in the air-gas warm combination in a closed system is provided and is electrically connected to the input 47 of the comparison 1-17.

Similarly, it is provided with a volume capacity zero dragon tube 48 of explosive capacity III, and is electrically connected to the input 411 of the calculation element 19.

Also, use gaseous explosives that do not absorb IR or UV radiation.
IIs3 has a zero time setter 50f for air blowing, which connects the electrical VC @ to the data input 51 of the control unit 22.
The calculated flow rate ratio of the continuous air-gas mixture is transmitted from the output of the calculation element 19 to the arrangement member 52.

Device tFi, pipeline element 2 (F
igt) Oli! Install the surface Kl device.

A space 53 called a vacuum cap (Fig. 2) for separating the air-gas mixture from the local @IO medium and a space located above the opening defect 55 and for accumulating the air-gas mixture leaking from the defect 55. It has 54. Space 53.
It is made of vacuum rubber and is connected to the conveying section 4 via a metal sleeve 56.

Air-ga: - The precision of measuring the flow rate ratio of a gas mixture 1f? , %<keep. Air-gas+1!1 combination leakage spout 7' from a closed system
) The acquiring IW that controls the fc method operates as follows. Solenoid valve 7.8 (FIgll descending unit 22
'7) Open the valve by the signal generated from the control output 23. And the operating capacity bi ÷ 3 IC? A gas that does not absorb iIR radiation, such as highly depressurized pure water air, is blown by a vacuum pump 9. Air inside the working organ during the V & injection operation process -
In Diagera AVc of Fig. 3, in which changes in gas pressure P and concentrated honey C7) are described with time changes, this sleep ritual is performed during the ventilation cycle t.

When the blowing cycle t is completed, the blowing time setter 50
issues a signal to the input 51 of the control unit 22, which produces a signal from the control output 5 to close the solenoid valve 7. After that, working container 3ti vacuum pump 9! The pressure below atmospheric pressure is also in, i.e. 2.66
σ'PaK is maintained and monitored by pressure transducer 20. Measured pressure 111 (negative pressure Pm1n)
is transmitted from the pressure transducer 2o to the data input 21 of the control unit 22. Furthermore, it is transmitted from the data output 39 to the operator 19 to be stored and later to be remembered when the test gas concentration 1 in the closed system becomes equal to the test gas concentration fvC in the closed system. The gas mixture υ pressure change ΔPOII is used as data for the output. Working container 37) Suction corresponds to suction cycle t2 in FIG.

The cycle t and the preparatory period tl, by which the test gas *v in the air-gas mixture in the working vessel 3
Increase f to increase measurement sensitivity and sanity. In other words, if the above preparation is not carried out (compared to the operation * air in the pipe 3 -
The equivalent depth of the test gas hole that attracts IR radiation in the gas mixture can be increased.

When the suction cycle t2 ends, the control unit 22?
tThe control output 24 emits a D signal to close the solenoid valve 8, and at the same time, the control output 23 emits a second signal to open the solenoid valve 7.

As a result, 1 valve 8 is closed, 7 solenoid valves are opened, and from this point on, the air-gas agglomerate to be analyzed is extracted from the air flow path 1 and the conveyance path 4. The air-gas mixture is introduced into the working container 3 by the transfer pump 6 through the air filter 5, and the air-gas mixture is contained in the test gas-container system in the air-tight container 3. test gas concentration V
Extraction and introduction into the four areas are performed until the value is equal to . The extraction process m of the air-gas mixture corresponds to the cycle t, which achieves a predetermined test gas leakage and fills the working vessel 3 with a positive pressure (i) air-gas hot mixture. This cycle ij is shown in FIG.

As mentioned above, the method of the present invention provides that whenever the preparatory steps t and tl are carried out, the working vessel 3
It is also possible to introduce air-gas into the interior. KoOw1
The pressure of the combined air and gas a in the total motion vessel 3 rises from the atmospheric pressure level. In Fig. 3, this step corresponds to cycle ■, and the pressure change is shown by the dashed line.
Operating capacity 63? When blowing air and creating negative pressure (t
The radiation optical path from the light WIll (corresponding to 1 and tl) to the radiation switch 18 is interrupted by the radiation switch 36, 37, 38 of the IR radiation @transformer 13, the radiation detection 1 es 113 and the radiation detection 1 es 14. cannot enter the container.

The radiation lit output S is cooled during cycles t1 and t27), returning the lit to its initial state (this means preparing the radiation detector 14 for the next measurement after the previous step).

After the solenoid valve 8 is closed, control! L-nit 22 transmits a signal from control output 26 that activates stepper motor 28 of radiation switch 12 . As a result, the motor 28 displaces the shutter 27 and the IR radiation is modulated.
Q's maximum a-collection frequency is set to a certain frequency.

Cycle t5 of introducing the air-gas mixture into the air-gas mixture s3
'7) Upon completion, the control unit 22
1 output 25 issues a signal to close the solenoid valve.

Before starting the measurement, the required point of change in the test gas in the air-gas mixture in the closed system is set by the setter 46, and if It is transmitted to input 47 of ton@1117 and stored.

In cycle t, the air-gas mixture to be analyzed is exposed to the IR radiation envelope, and the test gas concentration in the air-gas mixture in the working volume 1) is exposed to the air-gas mixture in the closed system.
This cycle ends at time 9, which is equal to the test gas at in the gas mixture. Cycle t of FtgS, ■ Measurement night after completion, kt4
Radiation detection! 114 - to 7? -15 is the test gas, that is, N20 v at the input 16 of the comparator circuit 17.
Explosive action 9! The comparator circuit 17 transmits a signal related to the discussion 1 in the test gas concentration setter 46, and the comparison circuit 17 determines when the at is dispersed with the concentration (COl) of the test gas concentration setter 46.
0mtllll input 44: transmits a signal. This signal causes the calculation element 19 to calculate the effective pressure Pmax f of the air-gas mixture in the working container 21 at the time when the test gas concentration in the working container 3 becomes equal to that in the closed system. input from the pressure transducer 20 to the calculation element 19 via the pre-stored pmi
Based on n and Pf'n & From the O ratio-circuit 17, which calculates Il! The timer 410 control input 43K(-t) signal is transmitted to -
Measure the time it takes for the test gas at which the VIL sounds to reach the preset value, that is, the concentration [K] in the sealed system, to
The data output 42 of the 11 constant w1 timer 410 is transmitted to the wWI element 19. -j Prior to the setting button, information regarding the volumetric capacity of the working volume s3 is input from the setter 48 to the data input 49 of the calculation element 19 and stored in advance. Thereafter, from the output of the comparator circuit 17, the calculation element 190 system (
(4) The symbol is transmitted to the input and the flow rate ratio of air-gas a combined leakage is calculated based on equation-9) K.

The final calculation result is transmitted from the output of the IF element 19 to the recording member 52. At the same time, a signal is transmitted from the output of the comparator circuit 17 to the control input of the control unit 22. from the control output 23 to the solenoid valves 7 and 8.
A signal is issued to open the After this, cycle t5
At , the air-gas warm mixture is discharged by the vacuum pump 9 and the operation is performed as shown in FtgS vgII! The effective pressure inside 3 is returned to atmospheric pressure. The simultaneous sum control unit 220 generates a signal to stop the step motor 28 from the control output 29. When the motor 2B stops, the shutter 27 returns and the IR radiation is released! The spin enters the working volume 113. The position WIt of the shutter 27 of the radiation switch 12 is monitored by means of a synchronization detection value with a signal diode 31 which reaches the data input 33 of the control unit 22.

[Brief explanation of the drawing]

Fig. 2 is a diagram of the device f) of the present invention for carrying out the method for detecting the leakage of an air-gas mixture escaping from a closed system; ◎ Fig2Vi extracting an air-gas mixture from the surface of a sealed vessel slO being monitored! The vertical section FtgS of @(*output device) is the concentration of the test gas in the explosion-container f (dashed line) and the pressure of the air-gas warm combination (l) when measured using this method.
! A graph showing changes in line) is shown. 1: Device for extracting an air-gas mixture from a closed system [2: Pipeline 3: Working vessel 4; Transport@wI 5:
Air filter 6; Conveying pump 7.8: Solenoid valve 9
: Vacuum pump 10: Entrance of Kui #IJ audience 11: IR radiation source 12: Radiation switch 13: Transformer v4 14: I
R radiation ejector 15: Detector sensor 16: Comparison circuit input 17: Comparison circuit 18: Data of calculation element human power 19: Performance IE element 20; "Pressure transducer"21; Control unit data input 22: Control unit 2
3.24.25.26: Control output of control unit 27
: Radiation switch O shutter 28; Step motor
29: Control unit human power 30: Synchronous power source light source 31: Synchronizer photodiode 32: Shutter opening 33: Control unit data human power 34: Radiation source non-nickel-chromium alloy wire coil 35: Radiation $6B) Reflection rIs 36.37.38: flQlli gas filter 39: Control unit data output 40:
Control output of control unit 41: Timer 42: Data output of timer 43: Timer 〇 system (2) input 44.
45: Control human power of control unit 46: Air-gas in a sealed system #, f! Setter of test gas #If injection in body 47: Comparison circuit input 48: Setter of volumetric capacity tm of working container 49; Input of calculation element 50: Setter of Kuifuan scale sending WL time 51: Control unit data Human power 52: Recorded parts 53.54: Container of air-gas extraction device 55: Pass-through defect in sealed system 56: Sleeve of air-gas extraction II Special pestle 1 applicant Patent attorney Fumi Sato (and 1 other person) hJ Continued from page 1 0 Inventor Georgiy Trokhimovitch Lebedev Soviet Union Moscow Ulitsya Kobtyvskaya 18 B Kwarchyla 56 0 Inventor Boris Borisovitch Sakharov Soviet Union Smolensk Ulitsya Shetschenko 71 Kwarchila 8 0 Inventor Gennady Vasilyevich Prusnin Soviet Union Dolgoprudny Moskovskoy Oblastei Likhachevskoe Shots 20 Kwarchila 22 ■Applicant Alexei Fedorovytsi Zaitsev Soviet Union Moscow Ulitsya Shipilovskaya 53 Kwarchila 69 ■Applicant Vyacheslav Alekseevich Tyurin Soviet Union Moscow Ulitsya Udaltsova 13 Kwarchia 5 ■Applicant Georgiy Trokhimovytsi Lebedev Soviet Union Moscow Ulitsya Kovtyvskaya 18 Bi Kwarchia 56 ■Applicant Applicant Boris Borisovitch Sakharov Soviet Union Smolensk Uritsutsa Shetschenko 71 Kwarchila 8 ■Applicant Gennady Vasilyevich Prusnin Soviet Union Dolgoprudny Moskovskoy Oblastei Likhachevskoye Shots 20 Kwarchila 22 Procedures Amendment ( (Hojo) 571022 Showa bΦ Enrepuru month i day Commissioner of the Patent Office Wakasugi Kazuo Yasushi 11, Indication of the case Showa 57 Enrebutsumen No. 35938 1, Name of the invention Air-gas mixture from sealed-h large system Device for carrying out leakage detection method and coughing method 8, person making amendment case, lll1 case Patent applicant (and 5 others) 4, Agent 〒105 6, @Date of official order 18K57m1-June 11
(Shipping date: June 29, 1982) Subject of amendment Column 7 of "Brief explanation of one drawing of the specification" Contents of amendment Contents of amendment 1 as shown in the attached sheet, IIA Specification Tower Reference Page 3 Line 9 “rtgi1Jt7[
1111'' to 2, same line 114 r Fig Z J to ``Fig. 2'' 8, same line 17 r Fig 3 J to [3rd HJ
Correct each.

Claims (1)

[Scope of Claims] 1. Introducing an air-gas mixture extracted from the surface of a closed container to be monitored into an explosive chamber and discharging the test gas in the air-gas mixture in the working container. IR or UV radiation modified in the absorption band to an air-gas mixture V
In the method for detecting leakage of an air-gas mixture from a closed system having information about the test gas concentration chamber (C+) in the air-gas mixture, The test gas concentration in the air-gas mixture in the sealed system [(Co)K is equal to the concentration of the test gas in the air-gas mixture in the air-gas mixture [(Co)K] The mixture is introduced into the working vessel (introducing the gas)
nXm't@ (C1) Measure the time (1) required for the reaction to occur and the effective change (∆P) in the working vessel during that time, and calculate it from the manure equation. An air-gas system characterized in that the leakage tf is determined by the flow rate ratio (Q)ff of the air-gas mixture exiting from a closed system. I1 combination leak detection method St Q=V
−ΔP/tl C1=C0 where V indicates the volumetric capacity of the working vessel prior to introducing the air-gas mixture into the working vessel.
'g blows a gas that doesn't absorb UV radiation, and more!
lJ Kikui @ D naruto gas in the container The method 3 according to claim 1, characterized in that the concentration of honey in the container is aspirated to about 1,000 yen or less, f\recommendation* <3 ), a device for extracting an air-gas mixture from the surface of a closed system connected to the inlet of the working vessel; a vacuum pump (9) connected to the outlet of the working vessel; IR spanning UV radiation distributed at the entrance/opening (10)
source (11), radiation IIIK (11) and inlet aperture (10
) and [WA!
1 (13), and actuation l for placing the air-gas mixture therein.
! If! r3) comprises an IR or UV radiation detector 04) located across the radiation beam passing through the radiation detection circuit 0? ), and the output of the Mukuhiko circuit is electrically connected to the input of the recording member (52). Air-gas mixture from a closed system. At the detection Vc position, a transfer pump (6) provided at the inlet of the operating container, two electromagnetic valves (7, 8) provided directly at the intake and outlet of the operating container, and the operating container iKm. Pressure transducer (2)
0), the setter G46) of the test gas rich exhaustion in the air-gas warm combination in the sealed system, the comparison circuit (1η
The other output of control human power (43) is W! It is compared (
ff - (41), fe control unit) (22), calculation element (19), setter for the main volume t of the working vessel
(48), the setter (40) is connected to the other input (47) of the comparator circuit (17), and the control unit f221■ data input (21)K is connected to the pressure quadrature transducer (20). However, the control input (44, 4
5) is connected to the output of the comparator circuit (17), and the control output (4tri is connected to the human power of the timer (41), and the control outputs a!5.2 and (24, 23) are connected to the t magnetic It is connected to the human power of the valves (7, 8), and the fII comparison circuit (
The output of 17) is also connected to the other input of the timer (4).
11 data outputs (42) and the @I control unit data output 99) are connected, and the setter (48>) is connected to the human power (49) of the calculation element (19);
The calculation element (19) is the following Fi! Based on the above, from the sealed system [@Extract the air-gas a combined flow rate (Q) [2] and calculate the result from the output of 111 votes (19) to the recording member (521 manually) Leakage spout port 1 characterized by transmitting equation Q = V − ΔP / t I CI =C
□ However, V: Working volume vs. volumetric capacity of (3) Co: Test gas concentration tWi during air-gas hot combination in the sealed system C1: Test during air-gas hot combination in the working vessel (3) Gas concentration 1/♂: Pressure change in the working vessel <3) from the beginning of the introduction of the air-gas mixture until the above C4 and co become equal t: From the start of the introduction of the air-gas warm mixture to the above C1 and At the time 4 when co is equal to fk, the data input (51) of said control unit 22 is w
The bottle output device according to the third claim, characterized in that it is equipped with a four-way time setter (5U) that is continuous with Ik.