CN106124139B - A kind of method of quick detection dialyzer leakage - Google Patents

A kind of method of quick detection dialyzer leakage Download PDF

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Publication number
CN106124139B
CN106124139B CN201610676399.4A CN201610676399A CN106124139B CN 106124139 B CN106124139 B CN 106124139B CN 201610676399 A CN201610676399 A CN 201610676399A CN 106124139 B CN106124139 B CN 106124139B
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dialyzer
measured
leakage
water
scenarios
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CN201610676399.4A
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CN106124139A (en
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彭俊
张洪元
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上海佩尼医疗科技发展有限公司
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating 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
    • G01M3/32Investigating 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
    • G01M3/3236Investigating 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 by monitoring the interior space of the containers
    • G01M3/3272Investigating 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 by monitoring the interior space of the containers for verifying the internal pressure of closed containers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point

Abstract

The present invention relates to a kind of methods of quickly detection dialyzer leakage, it is included in measurement pressurising pressure drop under setup parameter environment, measurement pressurising leakage under same parametric environmental, it determines and leaks corresponding critical air pressure drop, whether leaked according to critical air pressure drop result judgement dialyzer compared with the pressure drop that other dialyzers of same specification batch measure and etc..The method that the present invention quickly detects dialyzer leakage provides a kind of quick, batch detection dialyzer leakage method, by determining that the relationship of quantity of gas leakage and liquid leakage determines whether dialyzer leaks using air-leakage test, the efficiency for improving detection has the characteristics that applied widely.

Description

A kind of method of quick detection dialyzer leakage
Technical field
The present invention relates to a kind of detection methods of dialyzer, in particular to a kind of quick, batch detection dialyzer leakage Method belongs to dialyzer product testing field.
Background technique
Dialyzer detection leak test is mainly to examine whether each connection position of container has leakage phenomenon.Dialyzer leakage Detection is general to be required to be to detect totally, has a feature when using air-leakage test dialyzer, with the temperature change of environment, gas Temperature change will appear biggish fluctuation, have a significant impact to testing result, so being critical to the reasonable leakage of setting one It range and is able to verify that.Air tightness detection equipment manufacturing firm is all often that client is needed to provide production in sale equipment at present Product detection parameters, and the product of many clients, although there is corresponding professional standard, does not have because size, structure, purposes are different yet There is the parameter of a standard, and often detection time is longer for the parameter in professional standard, is not suitable for producing in enormous quantities, so just Phase will establish a set of suitable, reliable dialyzer air-tightness detection method and generally require to expend the more time.
Summary of the invention
The method that the present invention quickly detects dialyzer leakage discloses new scheme, provides a kind of quick, batch detection The method of dialyzer leakage, solving the problems, such as existing detection scheme, time-consuming and unsuitable batch detection.
The present invention quickly detect dialyzer leakage method comprising steps of
(1) a blood room interface of dialyzer to be measured and a dialysis fluid chamber interface are formed after parallel connection and examined by air-tightness It surveys instrument to be connected to gas source sealing, another blood room interface of dialyzer to be measured and another dialysis fluid chamber sealing joint is blocked.
(2) at room temperature, inflated using the inflation positive pressure P of setting into dialyzer to be measured, inflationtime is T1, when pressure stabilizing Between be T2, the testing time is T3, within the testing time stop inflation, the gas in dialyzer to be measured is recorded at the end of the testing time Pressure drop △ P.
(3) it will be full of the water that temperature is 37 DEG C of body temperature in the blood room of dialyzer to be measured and dialysis fluid chamber, will be filled with water Dialyzer to be measured by step (1) in the way of connect after be flat on dry paper.
(4) at room temperature, pressed using the inflation positive pressure P of setting into dialyzer to be measured, carry out closed test, closing is surveyed Trying the time is T4, the closed test time after checking step (3) in drying paper and dialyzer to be measured gap position Water leakage scenarios record water leakage scenarios.
(5) choose N number of same specification dialyzer to be measured repeat step (1)~(4) obtain N number of △ P and each △ P is corresponding Water leakage scenarios.
(6) the N number of △ P and the corresponding water leakage scenarios of each △ P (5) obtained according to step determines that water leakage scenarios are not leak Corresponding maximum △ P value △ PM determines leakage air pressure drop upper limit △ PB in the numberical range less than △ PM.
Using step (1)~(2) batch detection and step (5) in the dialyzer product of the same specification of dialyzer to be measured obtain The corresponding △ P value of each dialyzer product, by the obtained corresponding △ P value of each dialyzer product and step (6) in obtain △ PB compare, △ PB is greater than according to comparison result and determines that corresponding dialyzer has leakage, is less than according to comparison result Or it is equal to △ PB and determines that leakage is not present in corresponding dialyzer.
The method that the present invention quickly detects dialyzer leakage provides a kind of quick, batch detection dialyzer leakage side Method is improved by determining that the relationship of quantity of gas leakage and liquid leakage determines whether dialyzer leaks using air-leakage test The efficiency of detection has the characteristics that applied widely.
Detailed description of the invention
Fig. 1 is the operating principle schematic diagram of this programme detection dialyzer air-tightness.
Fig. 2 is the operating principle schematic diagram of this programme water-filling into the blood room of dialyzer.
Fig. 3 is the operating principle schematic diagram of this programme water-filling into the dialysis fluid chamber of dialyzer.
Wherein, 1 is gas source, and 2 be air-leakage detector, and 3 be dialyzer, and 4 be water tank, and 5 be thermostatic water bath, and 6 be to wriggle Pump, 7 be the import of blood room, and 8 be dialysis fluid chamber outlet, and 9 be dialysis fluid chamber import, and 10 be the outlet of blood room, and 11 be waste water tank.
Specific embodiment
The invention will be further described below.
This programme leaks the relationship of situation by measuring quantity of gas leakage and water, detection parameters is quickly found out, to establish With the matched dialyzer leakage detection method of clinical use.Gas source, air-leakage detector, wriggling is mainly utilized in the detection method It pumps, the simple detection system that thermostatic water bath and various connecting conduits, connector form, the equipment in the system is all more commonly used Testing equipment.The corresponding leakage of the dialyzer that this programme can find particular batch specification according to presetting major parameter is faced Boundary's point, is arranged standard value in critical point range, is compared using the standard value with testing result each in batch, to sentence It is disconnected whether to leak, it is ensured that result is reliable.The purpose of the present invention is to provide a kind of methods of quickly detection dialyzer leakage.One As for first prepare sample to be tested, then presetting parameter (is generally comprised but is not limited only to: normal pressure, punching press time, pressure stabilizing Time, testing time), the gas leakage amount of each sample is measured according to presetting parameter, and sample is then filled into water, is detected whether There is water leakage, finds out suitable gas leakage amount according to water leakage scenarios and test critical point.Then it is corresponding to formulate presetting parameter Gas leakage amount determines specification value.
The present invention quickly detect dialyzer leakage method comprising steps of
(1) a blood room interface of dialyzer to be measured and a dialysis fluid chamber interface are formed after parallel connection and examined by air-tightness It surveys instrument to be connected to gas source sealing, another blood room interface of dialyzer to be measured and another dialysis fluid chamber sealing joint is blocked.
(2) at room temperature, inflated using the inflation positive pressure P of setting into dialyzer to be measured, inflationtime is T1, when pressure stabilizing Between be T2, the testing time is T3, within the testing time stop inflation, the gas in dialyzer to be measured is recorded at the end of the testing time Pressure drop △ P.
(3) it will be full of the water that temperature is 37 DEG C of body temperature in the blood room of dialyzer to be measured and dialysis fluid chamber, will be filled with water Dialyzer to be measured by step (1) in the way of connect after be flat on dry paper.
(4) at room temperature, pressed using the inflation positive pressure P of setting into dialyzer to be measured, carry out closed test, closing is surveyed Trying the time is T4, the closed test time after checking step (3) in drying paper and dialyzer to be measured gap position Water leakage scenarios record water leakage scenarios.
(5) choose N number of same specification dialyzer to be measured repeat step (1)~(4) obtain N number of △ P and each △ P is corresponding Water leakage scenarios.
(6) the N number of △ P and the corresponding water leakage scenarios of each △ P (5) obtained according to step determines that water leakage scenarios are not leak Corresponding maximum △ P value △ PM determines leakage air pressure drop upper limit △ PB in the numberical range less than △ PM.
Using step (1)~(2) batch detection and step (5) in the dialyzer product of the same specification of dialyzer to be measured obtain The corresponding △ P value of each dialyzer product, by the obtained corresponding △ P value of each dialyzer product and step (6) in obtain △ PB compare, △ PB is greater than according to comparison result and determines that corresponding dialyzer has leakage, is less than according to comparison result Or it is equal to △ PB and determines that leakage is not present in corresponding dialyzer.
Step (3) in, in order to make in blood room and dialysis fluid chamber be full of normal body temperature's equivalent temperature water, keep away as far as possible Exempt to enter gas, this programme also discloses specially designed water-filling operating process, as shown in Figure 2,3, i.e., step (3) in, will be to The dialysis fluid chamber sealing joint for surveying dialyzer blocks, and the blood room import of dialyzer to be measured is connected to wriggling pump seal, will be wriggled Pump is connected to thermostatic water bath sealing, and thermostatic water bath is connected to water tank, and the outlet of blood room and the waste water tank of dialyzer to be measured are connected It is logical, peristaltic pump, which is opened, by the blood room of dialyzer to be measured fills water.With it is upper similarly, this programme step (3) in, by dialyzer to be measured Blood room sealing joint block, the dialysis fluid chamber import of dialyzer to be measured is connected to wriggling pump seal, by peristaltic pump and constant temperature Sink sealing connection, thermostatic water bath is connected to water tank, the dialysis fluid chamber of dialyzer to be measured is exported and is connected to waste water tank, is opened It opens peristaltic pump and the dialysis fluid chamber of dialyzer to be measured is filled into water.It is whole that the above process ensure that the constant and water energy of water temperature is enough full of The inside of a dialyzer improves the reliability of detection.
In order to embody the concrete application situation of this programme detection method, this programme also discloses application implementation in detail below Example.
Embodiment one
The dialyzer product that this example uses gathers by about 8000~13000 poly (ether sulfone) films of 1 shell, central filler, in right amount Urethane glue, 2 blood caps, 2 O-rings, 4 protection cap compositions, length about 300mm, interior diameter about 42mm.
According to the connection type of Fig. 1, gas source 1 and air-leakage detector 2 are connected, then go out air-leakage detector 2 Mouth is divided to two branches to be connected respectively with the blood room interface of dialyzer 3 and dialysis fluid chamber interface, another blood room interface of dialyzer 3 With dialysis fluid chamber sealing joint.At room temperature, using 120KPa positive pressure, filling time 4.0s, voltage stabling control 2.5s, testing time The condition of 2.5s is tested, and the dialyzer of 7 different air leakage rates is chosen, and records gas leakage amount.7 dialyzers are infused Full 37 DEG C or so of water (simulation human body temperature), according to the connection type of Fig. 2, water tank 4 is connected with thermostatic water bath 5, constant temperature Sink 5 is connected with peristaltic pump 6, and peristaltic pump water outlet is connected with the blood room import 7 of dialyzer 3, blood room outlet 10 and waste water tank 11 It is connected, simultaneously closes off dialyzate outlet 8 and import 9.Open the water that dialyzate blood room is filled 37 DEG C or so by peristaltic pump 6.Then, Close peristaltic pump 6, according to the connection type of Fig. 3, peristaltic pump 6 exported and is connected with dialyzate import 9, by dialyzate outlet 8 and Waste water tank is connected, and simultaneously closes off blood inlet 7 and blood outlet 10.It opens peristaltic pump 6 and dialyzer dialysis fluid chamber is filled 37 DEG C The water of left and right.Then the product of the water attachment device in the way of above-mentioned detection air-tightness will be filled, by dialyzer after connecting It lies against above dry paper.At room temperature, it using 120KPa positive pressure, after closed test device 10min, visually inspects dry Paper and dialyzer components connecting portion water leakage scenarios simultaneously record, and measurement result is as follows:
It can to sum up obtain, under room temperature, when air pressure drop is less than 93Pa, product is water-tight, and air pressure drop is greater than After 120Pa, product leak.It is possible to the leakage value upper limit is set in the range of being less than 93Pa according to the actual situation, and according to This leakage value upper limit examines whether other dialyzers of same specification batch can leak.
Above procedure can be summarized as step (1), step (5) in the length of shell of dialyzer to be measured be 300mm, shell Internal diameter be 42mm, be equipped with 8000~13000 poly (ether sulfone) films in shell, step (2) in inflation positive pressure P be 120KPa, inflation Time T1 is 4s, and voltage stabling control T2 is 2.5s, and testing time T3 is 2.5s, step (4) in inflation positive pressure P be 120KPa, closing Testing time T4 is 10min.Further, this programme has selected 7 groups of test patterns, i.e., step (5) in choose 7 same specifications Dialyzer to be measured repeat step (1)~(4) respectively obtain: the corresponding water leakage scenarios of △ P1=17Pa, △ P1 are not leak, △ P2= The corresponding water leakage scenarios of 93Pa, △ P2 are not leak, and the corresponding water leakage scenarios of △ P3=120Pa, △ P3 are micro- infiltration, △ P4= The corresponding water leakage scenarios of 150Pa, △ P4 are micro- infiltrations, and the corresponding water leakage scenarios of △ P5=210Pa, △ P5 are micro- leakage, △ P6 The corresponding water leakage scenarios of=257Pa, △ P4 are micro- leakages, and the corresponding water leakage scenarios of △ P7=306Pa, △ P4 are leak, drop Water determines that △ PM is 93Pa, further determines that △ PB is less than or equal to the value of 93Pa.
Embodiment two
The micro dialysis device product that this example uses is by about 200 poly (ether sulfone) films of 1 shell, central filler, appropriate poly- ammonia Ester gum, 2 blood caps, length about 200mm, interior diameter about 6mm.
According to the connection type of Fig. 1, gas source 1 and air-leakage detector 2 are connected, then go out air-leakage detector 2 Mouth is divided to two branches to connect respectively with the blood room interface of dialyzer 3 and dialysis fluid chamber interface, another blood room interface of dialyzer 3 With dialysis fluid chamber sealing joint.At room temperature, using 70KPa positive pressure, filling time 12s, voltage stabling control 2s, testing time 3s's Condition is tested, and the micro dialysis device of 7 different air leakage rates is chosen, and records gas leakage amount.7 dialyzers are filled 37 DEG C or so of water (simulation human body temperature), according to the connection type of Fig. 2, water tank 4 is connected with thermostatic water bath 5, thermostatted water Slot 5 is connected with peristaltic pump 6, and peristaltic pump water outlet is connected with the blood room import 7 of dialyzer 3, blood room outlet 10 and 11 phase of waste water tank Even, dialyzate outlet 8 and import 9 are simultaneously closed off.Open the water that dialyzate blood room is filled 37 DEG C or so by peristaltic pump 6.Then, it closes Peristaltic pump 6 is closed, according to the connection type of Fig. 3, peristaltic pump 6 is exported and is connected with dialyzate import 9, by dialyzate outlet 8 and is given up Water pot is connected, and simultaneously closes off blood inlet 7 and blood outlet 10.It opens peristaltic pump 6 and dialyzer dialysis fluid chamber is filled into 37 DEG C of left sides Right water.Then the product of the water attachment device in the way of above-mentioned detection air-tightness will be filled, puts down dialyzer after connecting It is put in above dry paper.At room temperature, using 70KPa positive pressure, after closed test device 10min, dry paper is visually inspected With dialyzer components connecting portion water leakage scenarios and record, measurement result is as follows:
It can to sum up obtain, under room temperature, when air pressure drop is less than 77Pa, product is water-tight, and air pressure drop is greater than After 104Pa, product leak.It is possible to the leakage value upper limit is set in the range of being less than 77Pa according to the actual situation, and according to This leakage value upper limit examines whether other dialyzers of same specification batch can leak.
Above procedure can be summarized as step (1), step (5) in the length of shell of dialyzer to be measured be 200mm, shell Internal diameter be 6mm, be equipped with 200 poly (ether sulfone) films in shell, step (2) in inflation positive pressure P be 70KPa, inflationtime T1 is 12s, voltage stabling control T2 are 2s, and testing time T3 is 3s, step (4) in inflation positive pressure P be 70KPa, the closed test time, T4 was 10min.Further, this programme has selected 7 groups of test patterns, i.e., step (5) think highly of by the middle dialysis to be measured for choosing 7 same specifications Multiple step (1)~(4) respectively obtain: the corresponding water leakage scenarios of △ P1=57Pa, △ P1 are not leak, △ P2=69Pa, △ P2 couple The water leakage scenarios answered are not leak, and the corresponding water leakage scenarios of △ P3=77Pa, △ P3 are not leak, △ P4=104Pa, △ P4 couple The water leakage scenarios answered are micro- infiltrations, and the corresponding water leakage scenarios of △ P5=120Pa, △ P5 are micro- leakage, △ P6=150Pa, △ P4 Corresponding water leakage scenarios are micro- leakages, and the corresponding water leakage scenarios of △ P7=267Pa, △ P4 are leaks, drip, and determine that △ PM is 77Pa further determines that △ PB is less than or equal to the value of 77Pa.
From such results, it can be seen that the method for detection dialyzer leakage provided by the invention, it can be according to the spy of product Property presetting major parameter, and then find out suitable leakage upper limit value, have the characteristics that detection is quick and result is reliable, and not It is only confined in above-mentioned example.
Present solution provides a kind of methods of quickly detection dialyzer leakage, are applicable not only to dialyzer mass production, And there is good extension applicability, the leak detection of all similar structures near field can be applied.This programme It is let out by selected can lead to of the relationship of air-tightness and leakage scenarios of the dialyzer of a certain specific standard of determination under setting condition The airtight pressure drop critical value of leakage, then the air pressure drop that the dialyzer of same specification batch is detected is compared with this critical value, Determine whether the dialyzer leaks according to comparison result.Based on the above feature, the method phase of the detection dialyzer leakage of this programme There is substantive distinguishing features outstanding and significant progress than existing dialyzer leak detection method.
The method of the quick detection dialyzer leakage of this programme is not limited to specific embodiment disclosure, it includes Operating procedure under the premise of not violating technical specification and principle, for optimization operation sequence can carry out sequence tune appropriate It changes, those skilled in the art also belong to the range of this programme according to the simple replacement scheme that this programme combination common knowledge is made.

Claims (7)

1. a kind of method of quickly detection dialyzer leakage, it is characterized in that comprising steps of
(1) air-leakage detector is passed through after a blood room interface of dialyzer to be measured and a dialysis fluid chamber interface being formed parallel connection It is connected to gas source sealing, another blood room interface of dialyzer to be measured and another dialysis fluid chamber sealing joint is blocked;
(2) at room temperature, inflated using the inflation positive pressure P of setting into dialyzer to be measured, inflationtime is T1, and voltage stabling control is T2, testing time are T3, stop inflation within the testing time, the air pressure drop in dialyzer to be measured is recorded at the end of the testing time △P;
(3) it will be full of the water that temperature is 37 DEG C of body temperature in the blood room of dialyzer to be measured and dialysis fluid chamber, will be filled with the to be measured of water Dialyzer by step (1) in the way of connect after be flat on dry paper;
(4) at room temperature, pressed using the inflation positive pressure P of setting into dialyzer to be measured, closed test is carried out, when closed test Between be T4, after the closed test time checking step (3) in drying paper and dialyzer to be measured gap position water seep Situation is leaked, water leakage scenarios are recorded;
(5) choose N number of same specification dialyzer to be measured repeat step (1)~(4) obtain the corresponding water of N number of △ P and each △ P and seep Leak situation;
(6) the N number of △ P and the corresponding water leakage scenarios of each △ P (5) obtained according to step determine water leakage scenarios be do not leak institute it is right The maximum △ P value △ PM answered determines leakage air pressure drop upper limit △ PB in the numberical range less than △ PM;
Using step (1)~(2) batch detection and step (5) in the same specification of dialyzer to be measured dialyzer product obtain it is each The corresponding △ P value of part dialyzer product, by the obtained corresponding △ P value of each dialyzer product and step (6) obtained in △ PB compares, and is greater than △ PB according to comparison result and determines that corresponding dialyzer has leakage, is less than or is waited according to comparison result Determining corresponding dialyzer in △ PB, there is no leakages.
2. the method for quick detection dialyzer leakage according to claim 1, which is characterized in that step (3) in, will be to be measured The dialysis fluid chamber sealing joint of dialyzer blocks, and the blood room import of dialyzer to be measured is connected to wriggling pump seal, by peristaltic pump It is connected to thermostatic water bath sealing, thermostatic water bath is connected to water tank, the blood room of dialyzer to be measured is exported and is connected to waste water tank, It opens peristaltic pump and the blood room of dialyzer to be measured is filled into water.
3. the method for quick detection dialyzer leakage according to claim 1, which is characterized in that step (3) in, will be to be measured The blood room sealing joint of dialyzer blocks, and the dialysis fluid chamber import of dialyzer to be measured is connected to wriggling pump seal, by peristaltic pump It is connected to thermostatic water bath sealing, thermostatic water bath is connected to water tank, dialysis fluid chamber outlet and waste water tank by dialyzer to be measured Connection opens peristaltic pump for the dialysis fluid chamber of dialyzer to be measured and fills water.
4. the method for quick detection dialyzer leakage according to any one of claim 1 to 3, which is characterized in that
Step (1), step (5) in the length of shell of dialyzer to be measured be 300mm, the internal diameter of shell is 42mm, is set in shell There are 8000~13000 poly (ether sulfone) films,
Step (2) in inflation positive pressure P be 120KPa, inflationtime T1 is 4s, and voltage stabling control T2 is 2.5s, and the testing time, T3 was 2.5s
Step (4) in inflation positive pressure P be 120KPa, the closed test time, T4 was 10min.
5. the method for quick detection dialyzer leakage according to claim 4, which is characterized in that step is (5) middle to choose 7 The dialyzer to be measured of same specification repeat step (1)~(4) respectively obtain:
The corresponding water leakage scenarios of △ P1=17Pa, △ P1 are not leak,
The corresponding water leakage scenarios of △ P2=93Pa, △ P2 are not leak,
The corresponding water leakage scenarios of △ P3=120Pa, △ P3 are micro- infiltrations,
The corresponding water leakage scenarios of △ P4=150Pa, △ P4 are micro- infiltrations,
The corresponding water leakage scenarios of △ P5=210Pa, △ P5 are micro- leakages,
The corresponding water leakage scenarios of △ P6=257Pa, △ P4 are micro- leakages,
The corresponding water leakage scenarios of △ P7=306Pa, △ P4 are leaks, drip,
It determines that △ PM is 93Pa, further determines that △ PB is less than or equal to the value of 93Pa.
6. the method for quick detection dialyzer leakage according to any one of claim 1 to 3, which is characterized in that
Step (1), step (5) in the length of shell of dialyzer to be measured be 200mm, the internal diameter of shell is 6mm, is equipped in shell 200 poly (ether sulfone) films,
Step (2) in inflation positive pressure P be 70KPa, inflationtime T1 is 12s, and voltage stabling control T2 is 2s, and testing time T3 is 3s,
Step (4) in inflation positive pressure P be 70KPa, the closed test time, T4 was 10min.
7. the method for quick detection dialyzer leakage according to claim 6, which is characterized in that step is (5) middle to choose 7 The dialyzer to be measured of same specification repeat step (1)~(4) respectively obtain:
The corresponding water leakage scenarios of △ P1=57Pa, △ P1 are not leak,
The corresponding water leakage scenarios of △ P2=69Pa, △ P2 are not leak,
The corresponding water leakage scenarios of △ P3=77Pa, △ P3 are not leak,
The corresponding water leakage scenarios of △ P4=104Pa, △ P4 are micro- infiltrations,
The corresponding water leakage scenarios of △ P5=120Pa, △ P5 are micro- leakages,
The corresponding water leakage scenarios of △ P6=150Pa, △ P4 are micro- leakages,
The corresponding water leakage scenarios of △ P7=267Pa, △ P4 are leaks, drip,
It determines that △ PM is 77Pa, further determines that △ PB is less than or equal to the value of 77Pa.
CN201610676399.4A 2016-08-17 2016-08-17 A kind of method of quick detection dialyzer leakage CN106124139B (en)

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