CN103063523B - Hollow fiber membrane wire blasting-resistance pressure and compression-resistance pressure testing device and method - Google Patents
Hollow fiber membrane wire blasting-resistance pressure and compression-resistance pressure testing device and method Download PDFInfo
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- CN103063523B CN103063523B CN201210570765.XA CN201210570765A CN103063523B CN 103063523 B CN103063523 B CN 103063523B CN 201210570765 A CN201210570765 A CN 201210570765A CN 103063523 B CN103063523 B CN 103063523B
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Abstract
The invention discloses a hollow fiber membrane wire blasting-resistance pressure and compression-resistance pressure testing device and a method. The device comprises a control cabinet, a testing cabin, a first testing medium tank, a second testing medium tank and a data collection system. The testing cabin, the first testing medium tank and the second testing medium tank are respectively arranged in the side face of the control cabinet through supports, and the data collection system is connected with a pressure meter, an electromagnetic flowmeter, an electromagnetic valve and the control cabinet through pipelines. The first testing medium tank and the second testing medium tank are connected with an air pressure source. The method characterizes hollow fiber membrane wire blasting-resistance pressure and compression-resistance pressure mainly by monitoring of a medium pressure mutation inflection point. A membrane wire testing component is simple in manufacturing method, short in time, and capable of rapidly and accurately testing the hollow fiber membrane wire blasting-resistance pressure and compression-resistance pressure, simultaneously can control lifting speed of testing pressure, and can use testing media of different types to conduct testing. The testing device can record changes of pressure in the whole testing process and outputs a testing result through a display.
Description
Technical field
The invention belongs to hollow fiber film thread performance test field, relate to the devices and methods therefor of hollow fiber film thread anti-burst pressure and resistance to compression pressure test.
Background technology
Along with going from bad to worse and economic fast development of quality of water environment, in the urgent need to alleviating the sewage recycling technology of shortage of water resources.Because film detachment process has that efficient, energy-conservation, technique is simple, environmental protection, the feature such as be easy to control, operating cost is low, it is widely used in sewage treatment area.In various forms of films, hollow-fibre membrane is large with its specific surface area, facility compact, do not need supporting layer, the unique advantage of the low grade of production cost, makes the fields such as the mixing of its preparation that has been widely used in wastewater treatment, ultrapure water, haemodialyser, desalinization, artificial lung, dehydration of organic solvent, organic solvent.
In actual application process, hollow fiber film thread physical strength is had to very high requirement, therefore will test the mechanical property of film silk in the production of film silk and R&D process, and the anti-burst pressure of hollow fiber film thread and resistance to compression pressure are the actual parameters of characterization of membrane silk mechanical property.At present, about the anti-burst pressure of hollow fiber film thread and practical technique and the patent description of resistance to compression pressure little, and the fracture tensile strength that current most film man of Silk Mill and scientific research institution can only test membrane silks to the test process of film silk mechanical property.And the fracture tensile strength of film silk can not the mechanical property of complete objective reaction membrane silk under artesian condition, the mechanical property while especially filtering different medium.This makes film silk can produce larger error and bring uncertain result in the process of application.
Based on the deficiency of currently available technology, provide a kind of easy operating, test speed is fast, test result is accurate, automaticity is high hollow fiber film thread anti-burst pressure and resistance to compression pressure test device and the method for testing based on this device to become technical matters urgently to be resolved hurrily at present.
Summary of the invention
The object of the invention is to provide a kind of hollow fiber film thread anti-burst pressure and resistance to compression pressure test device and method, utilize this device to test process easy operating, can the mechanical property of test membrane silk under artesian condition, and its test speed is fast, test result is accurate, automaticity is high.
The object of the invention is to realize by following technical proposals.
A device for hollow fiber film thread anti-burst pressure and resistance to compression pressure test, comprises switch board, and is separately positioned on the test chamber of switch board one side, No. 1 tested media tank and No. 2 tested media tanks by support; Described test chamber is connected with No. 2 tank efferent ducts of No. 1 tank efferent duct of No. 1 tested media tank, No. 2 tested media tanks respectively by No. 1 joint input pipe, No. 3 joint input pipes, and No. 1 joint input pipe, No. 3 joint input pipes connect respectively switch board; Described test chamber connects respectively switch board by No. 2 joint efferent ducts, No. 4 joint efferent ducts, and is communicated with the set No. 2 joint evacuated tube of switch board, No. 4 joint evacuated tube;
Described No. 1 tested media tank and No. 2 tested media tanks are communicated with atmospheric pressure source by No. 1 tank source of the gas connection valve, No. 2 tank source of the gas connection valves and pipeline respectively;
Described switch board is provided with LCDs and the USB interface being connected with data acquisition system (DAS).
Further, the feature of apparatus of the present invention is also:
Described test chamber is made by stainless steel material, and hatchcover is established at test chamber top, between hatchcover and cabin body, is provided with silicone gasket, and adopts quick cutting ferrule clamping, and its maximum pressure-bearing reaches 3MPa, and test chamber bottom is provided with a tested media exhaust-valve.
Described hatchcover bottom is provided with 44 luer tubing connectors corresponding with four, hatchcover top junction block, can by with No. 1 joint input pipe and No. 2 joint efferent ducts or No. 3 joint input pipes and No. 4 corresponding two the luer tubing connector connecting test film silks of joint efferent duct.
Described No. 1 tested media tank and No. 2 tested media tanks are made by stainless steel material, and its maximum pressure-bearing is 3MPa.
In the pipeline that described test chamber, No. 1 tested media tank and No. 2 tested media tanks are communicated with switch board, be respectively equipped with electromagnetic flowmeter, solenoid valve and precision pressure meter, control by the open degree of controlling solenoid valve the pressure being added on test membrane silk.
The present invention also provides a kind of hollow fiber film thread anti-burst pressure and resistance to compression method for testing pressure, and the method comprises the steps:
1) make test specimens assembly: two luer tubing connectors are passed respectively in testing sample film silk two ends, in luer tubing connector, inject rapid-curing cutback bicomponent epoxy resin, after epoxy resin primary solidification, the epoxy resin that exposes luer tubing connector upper end is cut together with film silk, the endoporus at film silk two ends is exposed;
2) anti-burst pressure test: the test specimens assembly Liang Ge road strategic point joint that step 1) is made is connected respectively on test chamber hatchcover on the road strategic point joint corresponding with No. 1 joint input pipe and No. 2 joint efferent ducts, close test chamber hatchcover, close the solenoid valve connecting in No. 2 joint efferent ducts, No. 3 joint input pipes and No. 4 joint efferent duct connecting lines; Give in No. 1 tested media tank and pass into tested media, on switch board indicator screen, set test pressure ascending velocity; Tested media enters joint input pipe by No. 1 tank efferent duct No. 1 through switch board, then enters in test membrane silk, is connected to electromagnetic flowmeter and solenoid valve in No. 1 joint intake line and controls the pressure that is applied to test membrane silk inner side by controlling in switch board;
Switch board data acquisition system (DAS) record that this pressure that is added to tested media inside film silk changes and No. 2 joint output pipes in pressure change, in the time occurring that pressure jump reduces flex point in No. 2 joint efferent ducts, now the pressure of No. 2 joint efferent ducts is the anti-burst pressure of film silk; Open joint efferent duct No. 2, test macro row pressure, anti-burst pressure test finishes;
3) resistance to compression pressure test: step 1) is made to test specimens Liang Ge road strategic point joint and be connected on test chamber hatchcover on the road strategic point joint corresponding with No. 3 joint input pipes and No. 4 joint efferent ducts, close test chamber hatchcover, close the solenoid valve connecting in No. 2 joint efferent duct connecting lines; Give in No. 1 tested media tank and No. 2 tested media tanks and pass into tested media, on switch board display screen, set the ascending velocity that is applied to film silk internal pressure value and is applied to film silk external pressure; Tested media in No. 1 tested media tank enters joint input pipe by No. 1 tank efferent duct No. 1 through switch board under bleed pressure, then enters test chamber to the pressurization of test membrane silk outside; Tested media in No. 2 tested media tanks enters joint input pipe by No. 2 tank efferent ducts No. 3 through switch board under bleed pressure, then enter test membrane silk inner side, enter from No. 4 joint evacuated tube and discharge through No. 4 joint efferent ducts, keep film silk inner pressure constant with this; Be connected to electromagnetic flowmeter and solenoid valve in No. 1 joint intake line in switch board and control the pressure that is applied to test membrane silk outside by controlling;
Pressure in the pressure variation of the inside and outside both sides of switch board data acquisition system (DAS) recording film silk and No. 2 joint evacuated tube, No. 4 joint evacuated tube changes, in the time there is the flex point that pressure jump reduces in No. 4 joint evacuated tube, now the pressure in corresponding No. 2 joint evacuated tube pipelines is just film silk resistance to compression pressure with the difference of film silk inner setting pressure; Open No. 2 joint evacuated tube and No. 4 joint evacuated tube, test macro row pressure, resistance to compression pressure test finishes.
Described tested media is pure water or nitrogen.
Described film silk includes but not limited to Kynoar, polysulfones, polyethersulfone, polyacrylonitrile, SPSF, cellulose acetate or polypropylene micro-filtration, ultra filtration hollow fiber membrane silk.
Described data acquisition system (DAS) is by the external and internal pressure on PLC control system dynamic acquisition test sample, and the open degree of controlling solenoid valve is controlled the pressure being added on sample.
The described ascending velocity that is applied to film silk internal pressure and is applied to film silk external pressure is 100KPa/min-1000KPa/min.
Compared with prior art, advantage of the present invention and beneficial effect are:
1) method for making of film silk test suite is simple, the making used time is short, and the method can be measured film silk anti-burst pressure and resistance to compression pressure rapidly and accurately, simultaneously the ascending velocity of controllable testing pressure;
2) can use different test (gas, liquid) medium to test;
3) test process automation degree is high, and proving installation can record the variation of pressure in whole test process, and shows test results by display, can derive test data by USB interface.
Brief description of the drawings
Fig. 1 is hollow fiber film thread anti-burst pressure, resistance to compression pressure test device figure;
Fig. 2 is hollow fiber film thread anti-burst pressure and resistance to compression pressure test component drawings;
Fig. 3 is hollow fiber film thread anti-burst pressure and resistance to compression pressure test assembly connection layout.
In figure: 1, switch board; 2, display screen; 3, USB interface; 4, No. 2 joint efferent ducts; 5, No. 4 joint efferent ducts; 6, No. 3 joint input pipes; 7, No. 1 joint input pipe; 8, test chamber; 9, No. 2 tested media tanks; 10, No. 2 tank source of the gas connection valves; 11, No. 1 tested media tank; 12, No. 1 tank source of the gas connection valve; 13, support; 14, No. 4 joint evacuated tube; 15, No. 2 joint evacuated tube; 16, No. 2 tank efferent ducts; 17, No. 1 tank efferent duct; 18, luer tubing connector; 19, film silk; 20, test chamber end cap.
Embodiment
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the device of hollow fiber film thread anti-burst pressure and resistance to compression pressure test, comprises switch board 1, and is separately positioned on 11 and No. 2 tested media tanks 9 of 8, No. 1 tested media tank of test chamber of switch board 1 one sides by support 13; Test chamber 8 is connected with No. 2 tank efferent ducts 16 of 17, No. 2 tested media tanks 9 of No. 1 tank efferent duct of No. 1 tested media tank 11 respectively by 7, No. 3 joint input pipes 6 of No. 1 joint input pipe, and 7, No. 3 joint input pipes 6 of No. 1 joint input pipe connect respectively switch board 1; Test chamber 8 connects respectively switch board 1 by 4, No. 4 joint efferent ducts 5 of No. 2 joint efferent ducts, and is communicated with 15, No. 4 joint evacuated tube 14 of the set No. 2 joint evacuated tube of switch board 1; 11 and No. 2 tested media tanks 9 of No. 1 tested media tank are communicated with atmospheric pressure source by 12, No. 2 tank source of the gas connection valves 10 of No. 1 tank source of the gas connection valve and pipeline respectively; Switch board 1 is provided with LCDs 2 and the USB interface 3 being connected with data acquisition system (DAS).
Test chamber 8 is made by stainless steel material, and hatchcover 20 is established at test chamber 8 tops, between hatchcover 20 and cabin body, is provided with silicone gasket, and adopts quick cutting ferrule clamping, and its maximum pressure-bearing reaches 3MPa, and test chamber 8 bottoms are provided with a tested media exhaust-valve.Hatchcover 20 bottoms are provided with 44 luer tubing connectors 18 corresponding with four, 20 top of hatchcover junction block, can be by two the luer tubing connectors 18 connecting test film silks 19 corresponding with 6 and No. 4 joint efferent ducts 5 of 4 or No. 3 joint input pipes of 7 and No. 2 joint efferent ducts of No. 1 joint input pipe.See shown in Fig. 2, Fig. 3.
11 and No. 2 tested media tanks 9 of No. 1 tested media tank are made by stainless steel material, and its maximum pressure-bearing is 3MPa.In 8, No. 1 tested media tank of test chamber pipeline that 11 and No. 2 tested media tank 9 is communicated with switch board, be respectively equipped with electromagnetic flowmeter, solenoid valve and precision pressure meter, control by the open degree of controlling solenoid valve the pressure being added on test membrane silk 19.
By a concrete film silk anti-burst pressure test and the embodiment of resistance to compression pressure test, the present invention is described below in conjunction with accompanying drawing.
1, film silk anti-burst pressure test
1) make test specimens: choose the long testing sample film silk 19 of 50 ㎝, the two ends of film silk 19 are passed respectively after two luer tubing connectors 18, in luer tubing connector 18, inject rapid-curing cutback bicomponent epoxy resin, film silk 19 two ends are bonded together with luer tubing connector 18, after epoxy resin primary solidification, the epoxy resin that exposes luer tubing connector 18 upper ends is cut together with film silk 19, the internal diameter at film silk 19 two ends is all exposed;
2) anti-burst pressure test: open this tester, carry out System self-test; Open test chamber hatchcover 20, step 1) gained test membrane Si Liangge road strategic point joint 18 is connected on test chamber hatchcover 20 with on No. 1 joint input pipe road that 7 and No. 2 joint efferent duct 4 is corresponding strategic point joint 18, close test chamber hatchcover 20, close corresponding to the solenoid valve in 6, No. 4 joint joint efferent duct 5 pipelines of 4, No. 3 joint input pipes of No. 2 joint efferent ducts, give in No. 1 tested media tank 11 and pass into tested media pure water, in switch board 1 LCDs 2, setting test pressure ascending velocity is 200KPa/min, clicks and enters anti-burst pressure test; Under bleed pressure effect, tested media pure water enters the input pipe 7 of No. 1 joint through switch boards 1 by No. 1 tank efferent duct 17, then enter in test membrane silk 19, by controlling the pressure that is connected to No. 1 electromagnetic flowmeter in joint input pipe 7 pipelines and solenoid control in switch board 1 and is applied to test membrane silk 19 inner sides.
The switch board 1 data acquisition system (DAS) pressure that sweep record is added to tested media inside film silk rapidly change and No. 2 joint efferent duct 4 pipelines in pressure change, system is automatically recorded the pressure jump in No. 2 joint efferent duct 4 pipelines in whole process and is reduced the pressure of locating, and on display, show that this pressure is anti-burst pressure 1MPa, open joint efferent duct 4 No. 2, make test macro row pressure, anti-burst pressure test finishes.
2, test membrane silk resistance to compression pressure
Test specimens is made the same, opens this tester, carries out System self-test.
3) resistance to compression pressure test: open test chamber hatchcover 20, the test membrane Si Liangge road strategic point joint 18 having prepared is connected on test chamber hatchcover 20 with on No. 3 joint input pipe road that 6 and No. 4 joint efferent duct 5 is corresponding strategic point joints 18, close test chamber hatchcover 20, close the solenoid valve in joint evacuated tube 15 tunnels No. 2, open the solenoid valve in joint evacuated tube 14 connecting lines No. 4; Give in 11 and No. 2 medium tanks 9 of No. 1 tested media tank and pass into tested media nitrogen, on display screen 2, setting test membrane silk internal pressure is 0.1MPa, setting film silk external pressure ascending velocity 100KPa/min, clicks and enters resistance to compression pressure test; Nitrogen in No. 1 tested media tank 11 enters joint input pipe 7 by No. 1 tank efferent duct 17 No. 1 through switch board 1, then enters test chamber 8 to the 19 outside pressurizations of test membrane silk; Nitrogen in No. 2 tested media tanks 9 enters joint input pipe 6 by No. 2 tank efferent ducts 16 No. 3 through switch board 1, enters test membrane silk 19 inner sides, then discharges from No. 4 interface evacuated tube 14 through No. 4 joint efferent ducts 5; Control by being connected to No. 1 electromagnetic flowmeter and the solenoid valve in joint input pipe 7 pipelines in control switch board 1 pressure that is applied to test membrane silk 19 outsides.
The switch board 1 data acquisition system (DAS) rapidly pressure variation of the inside and outside both sides of sweep record film silk is the pressure variation in 15, No. 4 joint evacuated tube 14 pipelines of No. 2 joint evacuated tube, in the time there is the flex point that pressure jump reduces in No. 4 joint evacuated tube 14, output film silk resistance to compression pressure is 0.3MPa.Open 15 and No. 4 joint evacuated tube 14 of No. 2 joint evacuated tube, give test macro row pressure, resistance to compression pressure test finishes.
The present invention is applicable to the test of anti-burst pressure and the resistance to compression pressure of Kynoar, polysulfones, polyethersulfone, polyacrylonitrile, SPSF, cellulose acetate or polypropylene micro-filtration, ultra filtration hollow fiber membrane silk.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (8)
1. the device of a hollow fiber film thread anti-burst pressure and resistance to compression pressure test, it is characterized in that, comprise switch board (1), and be separately positioned on test chamber (8), No. 1 tested media tank (11) and No. 2 tested media tanks (9) of switch board (1) one side by support (13); Described test chamber (8) is connected with No. 1 tank efferent duct (17) of No. 1 tested media tank (11), No. 2 tank efferent ducts (16) of No. 2 tested media tanks (9) respectively by No. 1 joint input pipe (7), No. 3 joint input pipes (6), and No. 1 joint input pipe (7), No. 3 joint input pipes (6) connect respectively switch board (1); Described test chamber (8) connects respectively switch board (1) by No. 2 joint efferent ducts (4), No. 4 joint efferent ducts (5), and No. 2 joint evacuated tube (15) that are connected with switch board (1), No. 4 joint evacuated tube (14) are communicated with;
Described No. 1 tested media tank (11) and No. 2 tested media tanks (9) are communicated with atmospheric pressure source by No. 1 tank source of the gas connection valve (12), No. 2 tank source of the gas connection valves (10) and pipeline respectively;
Described switch board (1) is provided with LCDs (2) and the USB interface (3) being connected with data acquisition system (DAS);
Described test chamber (8) is made by stainless steel material, hatchcover (20) is established at test chamber (8) top, between hatchcover (20) and cabin body, be provided with silicone gasket, and adopt quick cutting ferrule clamping, its maximum pressure-bearing reaches 3MPa, and test chamber (8) bottom is provided with a tested media exhaust-valve;
Described hatchcover (20) bottom is provided with 44 luer tubing connectors (18) corresponding with four, top of hatchcover (20) junction block, by two luer tubing connectors (18) the connecting test film silks (19) corresponding with No. 1 joint input pipe (7) and No. 2 joint efferent ducts (4) or No. 3 joint input pipes (6) and No. 4 joint efferent ducts (5).
2. the device of a kind of hollow fiber film thread anti-burst pressure according to claim 1 and resistance to compression pressure test, it is characterized in that, described No. 1 tested media tank (11) and No. 2 tested media tanks (9) are made by stainless steel material, and its maximum pressure-bearing is 3MPa.
3. the device of a kind of hollow fiber film thread anti-burst pressure according to claim 1 and resistance to compression pressure test, it is characterized in that, in the pipeline that described test chamber (8), No. 1 tested media tank (11) and No. 2 tested media tanks (9) are communicated with switch board, be respectively equipped with electromagnetic flowmeter, solenoid valve and precision pressure meter, control by the open degree of controlling solenoid valve the pressure being added on test membrane silk (19).
4. hollow fiber film thread anti-burst pressure and the resistance to compression method for testing pressure based on device described in claim 1, is characterized in that, the method comprises the steps:
1) make test specimens assembly: two luer tubing connectors (18) are passed respectively in the two ends of testing sample film silk (19), in luer tubing connector (18), inject rapid-curing cutback bicomponent epoxy resin, after epoxy resin primary solidification, the epoxy resin that exposes luer tubing connector (18) upper end is cut together with film silk (19), the endoporus at film silk (19) two ends is exposed;
2) anti-burst pressure test: by step 1) the test specimens assembly Liang Ge road strategic point joint (18) that makes is connected respectively on the upper road corresponding with No. 1 joint input pipe (7) and No. 2 joint efferent ducts (4) joint in distress of test chamber hatchcover (20) (18), close test chamber hatchcover (20), close the solenoid valve connecting on No. 2 joint efferent ducts (4), No. 3 joint input pipes (6) and No. 4 joint efferent ducts (5) connecting line; Give in No. 1 tested media tank (11) and pass into tested media, in the upper test pressure ascending velocity of setting of switch board (1) indicator screen (2); Tested media enters No. 1 joint input pipe (7) by No. 1 tank efferent duct (17) through switch board (1), then enter in test membrane silk (19), in switch board (1), be connected to electromagnetic flowmeter and solenoid valve in No. 1 joint intake line and control the pressure that is applied to test membrane silk (19) inner side by controlling;
Switch board (1) data acquisition system (DAS) record that this pressure that is added to tested media inside film silk changes and No. 2 joint efferent ducts (4) in pressure change, in the time occurring that pressure jump reduces flex point in No. 2 joint efferent ducts (4), now the pressure in No. 2 joint efferent ducts (4) is the burst pressure of film silk; Open No. 2 joint efferent ducts (4), test macro row pressure, anti-burst pressure test finishes;
3) resistance to compression pressure test: by step 1) make test specimens Liang Ge road strategic point joint (18) and be connected on the upper road corresponding with No. 3 joint input pipes (6) and No. 4 joint efferent ducts (5) joint in distress of test chamber hatchcover (20) (18), close test chamber hatchcover (20), close the solenoid valve connecting in No. 2 joint evacuated tube (15) connecting line, open the solenoid valve in No. 4 joint evacuated tube (14) connecting line; Give in No. 1 tested media tank (11) and No. 2 tested media tanks (9) and pass into tested media, in the upper ascending velocity that is applied to film silk internal pressure value and is applied to film silk external pressure of setting of switch board (1) display screen (2); Tested media in No. 1 tested media tank (11) enters No. 1 joint input pipe (7) by No. 1 tank efferent duct (17) through switch board (1) under bleed pressure, then enters test chamber (8) to the pressurization of test membrane silk (19) outside; Tested media in No. 2 tested media tanks (9) enters No. 3 joint input pipes (6) by No. 2 tank efferent ducts (16) through switch board (1) under bleed pressure, then enter test membrane silk (19) inner side, then discharge from No. 4 joint evacuated tube (14) through No. 4 joint efferent ducts (5), keep being applied to the constant pressure of film silk inner side with this; In switch board (1), be connected to electromagnetic flowmeter and solenoid valve in No. 1 joint intake line and control the pressure that is applied to test membrane silk (19) outside by controlling;
Pressure in switch board (1) data acquisition system (DAS) recording film silk in the pressure variation at two ends, outside and No. 2 joint evacuated tube (15), No. 4 joint evacuated tube (14) changes, in the time there is the flex point that pressure jump reduces in No. 4 joint evacuated tube (14), now the pressure in corresponding No. 2 joint evacuated tube (15) pipeline is just film silk resistance to compression pressure with the difference of film silk inner setting pressure; Open No. 2 joint evacuated tube (15) and No. 4 joint evacuated tube (14), test macro row pressure, resistance to compression pressure test finishes.
5. the method for a kind of hollow fiber film thread anti-burst pressure according to claim 4 and resistance to compression pressure test, is characterized in that, described tested media is pure water or nitrogen.
6. the method for a kind of hollow fiber film thread anti-burst pressure according to claim 4 and resistance to compression pressure test, it is characterized in that, described film silk includes but not limited to Kynoar, polysulfones, polyethersulfone, polyacrylonitrile, SPSF, cellulose acetate or polypropylene micro-filtration, ultra filtration hollow fiber membrane silk.
7. the method for a kind of hollow fiber film thread anti-burst pressure according to claim 4 and resistance to compression pressure test, it is characterized in that, described data acquisition system (DAS) is by the external and internal pressure on PLC control system dynamic acquisition test sample, and the open degree of controlling solenoid valve is controlled the pressure being added on sample.
8. the method for a kind of hollow fiber film thread anti-burst pressure according to claim 4 and resistance to compression pressure test, is characterized in that, described in the ascending velocity that is applied to film silk internal pressure and is applied to film silk external pressure be 100KPa/min-1000KPa/min.
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| CN109540696B (en) * | 2019-01-10 | 2023-11-21 | 江苏华神特种橡胶制品股份有限公司 | Bending test device for rubber hose assembly |
| CN112781991B (en) * | 2020-12-18 | 2024-04-19 | 武汉艾科滤膜技术有限公司 | Evaluation device and evaluation method for anti-flattening performance of hollow fiber membrane filaments |
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