CN101514949B - Multifunctional membrane testing device - Google Patents
Multifunctional membrane testing device Download PDFInfo
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- CN101514949B CN101514949B CN2009100372022A CN200910037202A CN101514949B CN 101514949 B CN101514949 B CN 101514949B CN 2009100372022 A CN2009100372022 A CN 2009100372022A CN 200910037202 A CN200910037202 A CN 200910037202A CN 101514949 B CN101514949 B CN 101514949B
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- negative pressure
- testing device
- multifunctional membrane
- power supply
- membrane testing
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- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 239000012528 membrane Substances 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 25
- 230000008859 change Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of testing moving parts such as a membrane and the like, and more particularly discloses a multifunctional membrane testing device which comprises a test bench component, an electric control cabinet component and a pneumatic component; wherein, the electric control cabinet component comprises a power supply, a programmable controller (PLC) connected with the power supply and two intermittent on-off selective control valves which are respectively and correspondingly connected on two pins of the PLC; the pneumatic component comprises a high pressure air source, a moisture separator and two airflow branches formed by respectively connecting the moisture separator with the two selective control valves, wherein, one of the airflow branches is communicated with a positive pressure gas discharge pipe, and the other one is connected with a negative pressure generator and a negative pressure gas discharge pipe and communicated with the parts to be tested, so that negative pressure is formed for testing the parts to be tested by vacuum-pumping. The testing device can accurately control the negative pressure applied on the objects to be tested, meet the strain resistance and corrosion resistance tests of dynamic and static rubber mebranes, and accurately control the frequency, time and count of the movement of the mebrane without needing a person specially assigned for monitoring, thereby improving the working efficiency of the test and greatly reducing the energy consumption.
Description
Technical field
The present invention relates to multiple rubber diaphragm and spring members such as motorcycle, automobile, relate in particular to the invention multifunctional membrane testing table of a kind of application controls siphon jet generation type and principle of work.
Background technology
Traditional equal vacuum diaphragm type carburator plunger durable test stand mainly adopts mechanical type vacuum pump principle of work, its principle is the extracting gases that continues, the gas of certain volume is isolated in the space of pump the inside, discharge again, gas in the container can be more and more thinner like this, and along with gas in the container is fewer and feweri, the pumping efficiency of pump also can be more and more lower like this, leakage rate to final each hermetic unit (comprising container and pump itself) is the same with the speed of exhaust, and vacuum just no longer promotes.
Yet original equal vacuum diaphragm type carburator plunger durable test stand primary structure is: water-ring vacuum pump, water-circulating pump, cam disc, article installing mechanism to be measured and test-bed are formed.
Wherein water ring vacuum pump belongs to the mechanical type vacuum pump, it is the mutliblade eccentric rotor rotation that has that is mounted in the pump case, water throwing is formed the water ring concentric with pump case to pump case, change gas suction, compression and discharge thereby water ring and spinner blade have formed the volume cycle.Big, the direct condensable gas such as pump up water steam of rate of air sucked in required when its advantage is low vacuum.Its shortcoming be complex structure, vacuum tightness low, can not aspirate and have granular medium, the rotor high-speed rotation preservative treatment that is not easy to do, therefore can not aspirate and have corrosive medium, complex operation.
And the main effect of cam disc is to utilize the motor drives cam disc to rotate, and is that the suction function of discontinuity is on the diaphragm of equal vacuum diaphragm type carburator thereby change continuous negative pressure that water ring vacuum pump produces.Its structure is comparatively complicated, vacuum magnitude is difficult to control.
Therefore, the equal vacuum diaphragm type carburator plunger durable test stand by above structure is formed mainly exists complex structure, function singleness, complex operation, the more shortcomings such as mechanism is difficult in maintenance of forwarding to is arranged.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of multifunctional membrane testing device is provided, this test unit is multiple functional, easy to maintenance, have brand-new principle of work, can utilize Programmable Logic Controller (PLC) accurately to control the formation time and the size of siphon jet, thereby the accurate vacuum magnitude of control action on article to be measured, satisfy the endure hardships damage and the corrosion resistant test of dynamic and static rubber diaphragm, can accurately control frequency, time and the counting of motion of membrane, do not need the special messenger to monitor, improve experiment work efficient, and significantly reduced the consumption of the energy.
In order to realize above-mentioned technical purpose, the present invention realizes by following technical scheme:
Multifunctional membrane testing device of the present invention, comprise test-bed assembly, electric control cabinet assembly and Pneumatic assembly, described test-bed assembly comprises the testing table that is used to operate, the joint flange that is used to that the installing mechanism of UUT is installed and is used to connect UUT; The Programmable Logic Controller PLC that described electric control cabinet assembly comprises power supply, is connected with power supply, the corresponding selective control valve that is connected with two discontinuity break-makes on two pins of described Programmable Logic Controller PLC; Described Pneumatic assembly comprises high-pressure air source, high-pressure air source is introduced and carries out the moisture separator that aqueous vapor is separated, described moisture separator is connected to form two branch roads with aforesaid two selective control valves respectively, wherein a branch road is connected with the barotropic gas delivery pipe, be connected with negative pressure generator and negative-pressure gas delivery pipe on another branch road, be connected with UUT again, form negative pressure and be used for UUT is vacuumized detection.
Further improvement as above-mentioned technology, described two selective control valves are respectively two solenoid valves, the output terminal of described moisture separator is connected with pressure-regulating valve, also be connected with three-way pipe on the described pressure-regulating valve forming two air-flow branch roads, first solenoid valve is connected wherein on the branch road and with the barotropic gas delivery pipe and is communicated with; Second solenoid valve is connected on another branch road, negative pressure generator be communicated with the negative pressure exhaust pipe by another three-way pipe again after second solenoid valve links to each other, the described negative pressure exhaust pipe other end links to each other with UUT UUT is vacuumized detection.
Described negative pressure generator is the negative pressure generator that is integrated with Lavalle type nozzle, the high-speed jet gas of generation falls in the pressure of gas after by Lavalle type nozzle decompressing speed-increasing, thereby produce needed relative negative pressure, when this high-speed jet gas acts on the article to be measured, just can satisfy the needs of test.
In order to monitor vacuum magnitude in real time, be connected with the vacuum table of a demonstration vacuum magnitude on the branch road of the latter linked three-way pipe of described negative pressure generator.
In order to reduce the noise size of gas stream, also be connected with sound suppressor on the described negative pressure generator through type city that nozzle is abdicated, Lavalle.
For the pressure size on the real-time detected pressures variable valve, be connected with the tensimeter of a demonstration pressure value on the described pressure-regulating valve.
In order to protect entire circuit, also be provided with the power supply control air switch of holding circuit before the input end of described power supply.
For the ease of operation, also be connected with starting control switch between described Programmable Logic Controller PLC and the power supply.
As the further improvement of aforementioned techniques, also be connected with counter on the pin of described Programmable Logic Controller PLC.
In the present invention, described power supply is that voltage is the direct supply of 24V.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention utilizes two solenoid valves of Programmable Logic Controller PLC control clocklike to move, thereby make gas discontinuously by solenoid valve and negative pressure generator and utilize Venturi effect, its pressure after by the Lavalle type nozzle decompressing speed-increasing in the negative pressure generator falls and produces high-speed jet gas, test with needed relative negative pressure thereby produce, UUT is vacuumized test, it is easy to operate, the vacuum tightness height, energy-conservation province consumption, can be according to the control program of different testing requirements change Programmable Logic Controller PLC, change siphon jet generation type and control siphon jet formation time, it is applied widely, and is practical;
(2) the accurate vacuum magnitude of control action on article to be measured of test unit energy of the present invention, satisfy the endure hardships damage and the corrosion resistant test of dynamic and static rubber diaphragm, can accurately control frequency, time and the counting of motion of membrane, do not need the special messenger to monitor, improve experiment work efficient, and significantly reduced the consumption of the energy.
(3) membrane testing device of the present invention is simple and compact for structure, has low level complete machine pattern, and easy to operate, maintenance capacity is little, can fully substitute original mechanical type vacuum pump, satisfies the testing experiment of moving components such as various rubber diaphragms.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is done and to explain:
Fig. 1 is a multifunctional membrane testing device one-piece construction synoptic diagram of the present invention;
Fig. 2 is a multifunctional membrane testing device electric control cabinet modular construction synoptic diagram of the present invention;
Fig. 3 is multifunctional membrane testing device Pneumatic assembly control synoptic diagram of the present invention;
Fig. 4 is a multifunctional membrane testing device principle of work synoptic diagram of the present invention;
Embodiment
As Fig. 1, shown in Figure 4, multifunctional membrane testing device of the present invention, comprise test-bed assembly 1, electric control cabinet assembly 2 and Pneumatic assembly 3, described test-bed assembly 1 comprises the testing table that is used to operate, the installing mechanism that is used to install UUT, and is used to connect the joint flange 11 of UUT.This test-bed assembly 1 is basic identical with existing test-bed modular construction.As shown in Figure 2, described electric control cabinet assembly 2 comprises power supply control air switch 21,24V direct supply 22, the starting control switch 26 that is connected with 24V direct supply 22, be connected with Programmable Logic Controller PLC23 behind the described starting control switch 26, the corresponding selective control valve that is connected with two discontinuity break-makes on two pins of Programmable Logic Controller PLC23, this selective control valve is specially solenoid valve 24 (being respectively first solenoid valve 241, second solenoid valve 242), also is connected with counter 25 on the Programmable Logic Controller PLC23 another one pin.As shown in Figure 3, Pneumatic assembly 3 of the present invention comprises high-pressure air source, high-pressure air source is introduced and is carried out the moisture separator 31 of aqueous vapor separation, be connected with pressure-regulating valve 32 behind the described moisture separator 31, also be connected with the tensimeter 37 that shows the pressure size on this pressure-regulating valve 32, the output terminal of pressure-regulating valve 32 links to each other with two solenoid valves 24 respectively by a three-way pipe 4 in addition, to form two air-flow branch roads, wherein first solenoid valve, 241 output terminals also are connected with malleation gas outlet 5, and also be connected with negative pressure generator 33 on second solenoid valve, the 242 place air-flow branch roads, be connected with another three-way pipe 6 behind the negative pressure generator 33, one of them air-flow output terminal of described three-way pipe 6 is connected with negative pressure exhaust pipe 7, be connected again with by mounting flange 36 UUT, be used for UUT is vacuumized detection to form negative pressure, this malleation gas outlet 5 and negative pressure exhaust pipe 7 are the installing mechanism of the installation UUT described in the test-bed assembly 1; Another air-flow output terminal is connected with and is used for detecting in real time the vacuum table 34 that shows vacuum magnitude, in the present invention, negative pressure generator 33 is provided with the negative pressure generator of Lavalle type nozzle in being, acts on the UUT by the siphon jet gas that produces discontinuity after the Lavalle type nozzle pressurization speedup; In addition, in order to reduce the noise volume that produces when the type nozzle of Lavalle because of gas stream, also be connected with sound suppressor 35 on the described negative pressure generator 33.
Principle of work of the present invention is:
As shown in Figure 4, when power supply being controlled air switch 21 and closes, public power enters electric control cabinet assembly 2,24V direct supply 22 is given in power supply, then 24V direct supply 22 is given controller Programmable Logic Controller (PLC) 23 and two solenoid valves 24 (241 of electricity with voltage for the 24V direct current power supply, 242), write relevant control program by two solenoid valves 24 (241 of Programmable Logic Controller (PLC) 23 controls, 242) action clocklike, make gas by phased manner by solenoid valve 24 and negative pressure generator 33 and utilize Venturi effect, the high-speed jet gas of generation falls in the pressure of gas after by Laval nozzle type decompressing speed-increasing, produce the needed relative negative pressure of test, and acting on test article, Programmable Logic Controller (PLC) 23 feeds back to counter 25 with every circulation time Test Information and carries out real-time counting.
When moisture separator 31 is connected, introducing public source of the gas uses for testing equipment, through pressure-regulating valve 32 control admission pressures within the specific limits, monitor by vacuum table 341, then the air-flow through two solenoid valves 24 (241,242) formation discontinuity enters negative pressure generator 32, act on the article to be tested by the siphon jet gas that produces discontinuity behind the Laval nozzle decompressing speed-increasing, utilize sound suppressor 35 to reduce the noise volume that produces when the type nozzle of Lavalle because of gas stream simultaneously, and by vacuum table 342 monitor force sizes.
Multifunctional membrane testing device simple structure of the present invention is reliable, compact dexterous, has low level complete machine pattern, easy to operate, vacuum is relatively high, energy-saving and cost-reducing, there are not the advantages such as running parts for maintenance amount is little, can fully substitute original mechanical type vavuum pump, can require according to different tests the control program of change controller able to programme (PLC), the change siphon jet forms mode and the control siphon jet forms the time, accurately controls the vacuum magnitude that acts on the article to be measured, satisfies endure hardships damage and the anti-rotten test of dynamic and static rubber diaphragm, can accurately control the frequency of diaphragm motion, time and counting, do not need the special messenger to monitor, improved experiment work efficient, and significantly reduced the consumption of the energy.
Claims (10)
1. multifunctional membrane testing device, it is characterized in that: comprise test-bed assembly, electric control cabinet assembly and Pneumatic assembly, described test-bed assembly comprises the testing table that is used to operate, the joint flange that is used to that the installing mechanism of UUT is installed and is used to connect UUT; Described electric control cabinet assembly comprises power supply, the Programmable Logic Controller that is connected with power supply, the corresponding selective control valve that is connected with two discontinuity break-makes on two pins of described Programmable Logic Controller; Described Pneumatic assembly comprises high-pressure air source, high-pressure air source is introduced and carries out the moisture separator that aqueous vapor is separated, described moisture separator is connected to form two branch roads with described two selective control valves respectively, wherein a branch road is connected with the barotropic gas delivery pipe, and described barotropic gas delivery pipe is installed in the back of selective control valve; The back of selective control valve is connected with negative pressure generator and negative-pressure gas delivery pipe in turn on another branch road, is connected with UUT again, forms negative pressure and is used for UUT is vacuumized detection.
2. multifunctional membrane testing device according to claim 1, it is characterized in that: described two selective control valves are respectively two solenoid valves, the output terminal of described moisture separator is connected with pressure-regulating valve, also be connected with three-way pipe on the described pressure-regulating valve forming two air-flow branch roads, first solenoid valve is connected wherein on the air-flow branch road and with the barotropic gas delivery pipe and is communicated with; Second solenoid valve is connected on another air-flow branch road, negative pressure generator be communicated with the negative pressure exhaust pipe by three-way pipe again after second solenoid valve links to each other, the described negative pressure exhaust pipe other end links to each other with UUT UUT is vacuumized detection.
3. multifunctional membrane testing device according to claim 2 is characterized in that: described negative pressure generator is the negative pressure generator that is integrated with Lavalle type nozzle.
4. multifunctional membrane testing device according to claim 3 is characterized in that: the vacuum table that is connected with a demonstration vacuum magnitude on the branch road of the latter linked three-way pipe of described negative pressure generator.
5. multifunctional membrane testing device according to claim 4 is characterized in that: also be connected with sound suppressor on the described negative pressure generator.
6. according to each described multifunctional membrane testing device of claim 2 to 5, it is characterized in that: the tensimeter that is connected with a demonstration pressure value on the described pressure-regulating valve.
7. multifunctional membrane testing device according to claim 6 is characterized in that: the power supply control air switch that also is provided with holding circuit before the input end of described power supply.
8. multifunctional membrane testing device according to claim 7 is characterized in that: also be connected with starting control switch between described Programmable Logic Controller and the power supply.
9. multifunctional membrane testing device according to claim 8 is characterized in that: also be connected with counter on the described Programmable Logic Controller another one pin.
10. multifunctional membrane testing device according to claim 9 is characterized in that: described power supply is that voltage is the direct supply of 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100372022A CN101514949B (en) | 2009-02-16 | 2009-02-16 | Multifunctional membrane testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100372022A CN101514949B (en) | 2009-02-16 | 2009-02-16 | Multifunctional membrane testing device |
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| CN101514949A CN101514949A (en) | 2009-08-26 |
| CN101514949B true CN101514949B (en) | 2010-12-08 |
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| CN2009100372022A Expired - Fee Related CN101514949B (en) | 2009-02-16 | 2009-02-16 | Multifunctional membrane testing device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102998194A (en) * | 2012-10-31 | 2013-03-27 | 宜兴市宜刚环保工程材料有限公司 | Testing apparatus for wear strength of honeycomb catalyst |
| CN107285416B (en) * | 2017-07-28 | 2020-12-22 | 苏州大学 | Laval-like tubular water-gas separation device |
| CN110579415A (en) * | 2019-10-10 | 2019-12-17 | 中广核高新核材科技（苏州）有限公司 | Fatigue testing machine for rubber diaphragm |
| CN114810574B (en) * | 2022-04-29 | 2024-02-27 | 洛阳拖拉机研究所有限公司 | Diaphragm pump detection system of two-stroke engine |
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Owner name: ZHANJIANG DENI CARBURETOR CO., LTD. Free format text: FORMER NAME: ZHANJIANG DELI CARBURETOR CO., LTD. |
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Address after: Jin Kang Road West Mazhang District 524094 Guangdong city of Zhanjiang province No. 32 Patentee after: ZHANJIANG DENI VEHICLE PARTS CO.,LTD. Address before: 524043 Guangdong Province, Zhanjiang city Chikan District Hai Road No. 27 Patentee before: Zhanjiang Deni Carburetor Co.,Ltd. |
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Granted publication date: 20101208 |
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