CN111006819A - Comprehensive detection system for diaphragm - Google Patents
Comprehensive detection system for diaphragm Download PDFInfo
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- CN111006819A CN111006819A CN201911090744.6A CN201911090744A CN111006819A CN 111006819 A CN111006819 A CN 111006819A CN 201911090744 A CN201911090744 A CN 201911090744A CN 111006819 A CN111006819 A CN 111006819A
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- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 238000012360 testing method Methods 0.000 claims abstract description 282
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 238000007654 immersion Methods 0.000 claims abstract description 74
- 239000012528 membrane Substances 0.000 claims abstract description 53
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 238000012806 monitoring device Methods 0.000 claims abstract description 6
- 238000002791 soaking Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 230000035515 penetration Effects 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract description 22
- 239000007789 gas Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 8
- 238000007789 sealing Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000009172 bursting Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
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- 238000007906 compression Methods 0.000 description 2
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- 239000002274 desiccant Substances 0.000 description 2
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- 238000011217 control strategy Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Dispersion Chemistry (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a comprehensive membrane detection system, which belongs to the technical field of membrane detection and comprises an air source subsystem, a water injection subsystem, an acquisition control subsystem, an airtight strength test device, a water immersion test device, a moisture permeation test device and a monitoring device, wherein the air source subsystem provides air pressure for the airtight strength test device and the water immersion test device, the water injection subsystem provides a water source for the water immersion test device, the acquisition control subsystem respectively acquires and controls the airtight strength test device, the water immersion test device and the moisture permeation test device, and the monitoring device monitors the airtight strength test device in real time. The invention can carry out uniform and accurate detection on the air tightness, strength, water immersion tightness and moisture permeability of the membrane, and has high detection efficiency.
Description
Technical Field
The invention relates to the technical field of diaphragm detection, in particular to a comprehensive diaphragm detection system.
Background
The sealing membrane is a sealing part in the mechanical field, and is one of important parts related to mechanical performance and service life, so that the air tightness, strength, water immersion tightness and moisture permeability of the sealing membrane must be strictly detected before the sealing membrane is delivered from a factory. The detection of diaphragm all is manual test in the existing market, and the detection requirement of airtight, intensity of diaphragm is very high, is irregular with artifical the detection, can not reach the accuracy that the test required, moreover, through artifical the detection, can not carry out multinomial detection simultaneously, the efficiency greatly reduced who detects.
Patent No. CN 206387552U discloses a detection device for detecting the air tightness and strength of a membrane. Including air supply system, acquisition control system, test device, air supply system is connected with test device, acquisition control system is connected with test device, test device includes base and cavity, the cavity includes cavity and cavity down, the cavity is located on the base down, it switches the piece to go up to be equipped with the diaphragm between cavity and the cavity down, install the diaphragm on the diaphragm switches the piece, be equipped with down the pressure cell on going up the cavity, be equipped with the observation window on going up the lateral wall of cavity, be equipped with pressure port, pressure release hole and last pressure cell on the cavity down respectively, pressure port and air supply headtotail, it is connected with acquisition control system respectively with lower pressure cell to go up the pressure cell. However, the invention cannot detect the water-immersion tightness and moisture permeability of the membrane, and the detection range is limited.
The patent with publication number CN 206387701U discloses a device for detecting moisture permeability of a membrane, and accurately detecting moisture permeability of the membrane in different pressure environments, humidity environments and temperature environments. Including air supply system, collection control system and test device, the air supply system is connected with test device, collection control system is connected with test device, test device includes base and cavity, the cavity is located on the base, the cavity includes high wet chamber and test chamber, be equipped with diaphragm switching piece between test chamber and the high wet chamber, install the diaphragm on the diaphragm switching piece, be equipped with pressurization hole, pressure release hole, wash port, first humiture test hole and first pressure test hole on the high wet chamber. However, this invention cannot detect the airtightness and the pressure strength of the membrane.
The patent with the publication number of CN 206420855U discloses a membrane water immersion detection device, which comprises an air source system, a water injection system, an acquisition control system and a test device, wherein the air source system and the water injection system are respectively connected with the test device, the acquisition control system is connected with the test device, the test device comprises a base and a cavity, the cavity comprises an upper cavity and a lower cavity, the lower cavity is arranged on the base, a membrane switching piece is arranged between the upper cavity and the lower cavity, a membrane is arranged on the membrane switching piece, a pressurizing hole, a pressure measuring hole, a liquid level hole, a water injection hole, a pressure relief hole and an upper water exhaust hole are respectively arranged on the upper cavity, an upper observation window is arranged on the side wall of the upper cavity, a lower water exhaust hole is arranged on the lower cavity, a lower observation window is arranged on the side wall of the lower cavity, the pressurizing hole is connected with the air source system, and the water injection hole is, and the pressure measuring hole and the liquid level hole are respectively connected with an acquisition control system. However, this invention cannot perform airtightness, strength detection, and moisture permeability detection. The three patent documents individually detect the single performance of the membrane, a comprehensive system cannot be formed, detection indexes cannot be collected and processed uniformly, and a plurality of persons are still required for detection, so that the detection efficiency is low.
Disclosure of Invention
In view of the above, the present invention provides a comprehensive membrane detection system, which can perform uniform and accurate detection on the air tightness, strength, water-immersion tightness and moisture permeability of a membrane, and has high detection efficiency, in view of the deficiencies of the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the membrane comprehensive detection system is characterized in that: the air source subsystem provides air pressure for the airtight strength testing device and the water immersion testing device, the water injection subsystem provides a water source for the water immersion testing device, the acquisition control subsystem respectively acquires and controls the airtight strength testing device, the water immersion testing device and the water penetration testing device, and the monitoring device monitors the airtight strength testing device in real time.
Further, the air supply subsystem includes air compressor machine, gas cylinder, manometer, first relief pressure valve, airtight pressurization valve and airtight pressure relief valve, the air compressor machine is with air compression income the gas cylinder, first manometer, first relief pressure valve, second manometer, airtight pressurization valve communicate in proper order, airtight pressurization valve with airtight strength test device's pressure port intercommunication, airtight pressure relief valve with airtight strength test device's pressure relief port intercommunication.
Furthermore, first manometer, second relief pressure valve, third manometer, the pressurization valve that soaks communicate in proper order, the pressurization valve that soaks with the pressurization mouth intercommunication of test device soaks, the relief valve that soaks with the release opening intercommunication of test device soaks.
Further, the water injection subsystem comprises a water immersion and water injection valve, and water enters the water immersion test device through the water immersion and water injection valve.
Further, the collection control subsystem includes control cabinet, main control system, data record appearance, pressure sensor, temperature and humidity sensor and level sensor, the main control system gathers pressure sensor, temperature and humidity sensor and level sensor information, and control airtight forcing valve, airtight pressure relief valve, the water injection valve that soaks, the forcing valve that soaks, the pressure relief valve that soaks open and stop.
Furthermore, the upper position and the lower position of the airtight strength testing device are respectively provided with a first pressure sensor, the soaking testing device is provided with a second pressure sensor and a liquid level sensor, the moisture permeation testing device is provided with three temperature and humidity sensors, and the first pressure sensor, the second pressure sensor, the liquid level sensor and the temperature and humidity sensors are all connected with the data recorder through signal lines.
Further, airtight strength test device includes that airtight device epicoele, airtight device lower chamber, first diaphragm switch spare, first observation window and first installation base, the airtight device epicoele is equipped with the first in command, first rings, first observation window and first test interface, the airtight device lower chamber is equipped with the experimental interface of second, first diaphragm switches the spare and installs the airtight device epicoele with between the airtight device lower chamber for fixed diaphragm.
Further, the immersion test device comprises an immersion device upper cavity, an immersion device lower cavity, a second membrane switching piece, a second observation window and a second mounting base, wherein the immersion device upper cavity is provided with a second handle, a second lifting ring, a second observation window I and a third test interface; a second observation window II and a fourth test interface are arranged in the lower cavity of the soaking device; the second membrane switching piece is arranged between the upper cavity of the soaking device and the lower cavity of the soaking device and used for fixing the membranes.
Furthermore, pass through wet test device and include test chamber, lower test chamber, well high humidity chamber, diaphragm change piece and third installation base, set up on the third installation base test chamber down, set up on the test chamber down the well high humidity chamber, set up on the well high humidity chamber go up the test chamber, go up the test chamber with be equipped with first diaphragm change piece between the well high humidity chamber, test chamber down with be equipped with the second diaphragm change piece between the well high humidity chamber.
Further, the inner wall of the lower test cavity is provided with a wall-mounted water box, and the lower test cavity is provided with a fuel gas generator.
The detection indexes of the diaphragm in the prior art are air tightness, bursting pressure, water immersion air tightness and moisture permeability, because of different types of membranes, each index is usually detected independently, and when the indexes are detected independently, the air tightness and the strength in a mechanical sealing membrane and the water immersion air tightness and the moisture permeability in the membrane in the filtration and isolation industry can be detected pertinently, for example, patent document No. CN 203672573U discloses a device for detecting air tightness of a sealing membrane, which comprises an aluminum profile support, a bottom plate and an electric cabinet, it is characterized in that two sealed inflation cavities are fixed on the bottom plate by bolts, one end of an inflation tube is connected with a tube joint, the other end is connected with an inflation speed regulating valve, an aluminum profile cross beam is fixed between the upper parts of the two aluminum profile pillars, a fixing plate is fixed on the aluminum profile cross beam, an air cylinder is arranged in the middle of the fixing plate, and air cylinder speed regulating valves are arranged at the upper end and the lower end of the air cylinder; linear guide shafts are arranged on two sides of the cylinder, the upper ends of the linear guide shafts are fixed with a connecting plate through bolts, and the middle parts of the linear guide shafts slide with linear bearings fixed on the fixing plate; and a membrane moisture permeability detection device disclosed in patent publication No. CN 206387701U and a membrane water-immersion detection device disclosed in patent publication No. CN 206420855U, which are capable of individually detecting the air-tightness, strength, water-immersion air-tightness and moisture permeability of a membrane, and when the above two types and the index detection are required for one type of membrane, the prior art can easily think that the sequential detection is performed by using more than two types of detection devices, rather than organically integrating them creatively.
The airtight strength detection device, the water immersion detection device and the moisture permeation detection device in the prior art are completely different in detection method and data acquisition and processing process, the airtight strength detection device mainly detects the pressure and the unilateral pressure of the upper cavity and the lower cavity of the diaphragm, the water immersion detection device needs to fill water in the device, the air pressure is used for simulating the water depth and then detecting the upper pressure and the lower pressure of the diaphragm, and the moisture permeation detection device mainly detects the upper pressure and the lower pressure of the diaphragm and the temperature and humidity, so that the detection method and the data acquisition and processing are different, and the prior art cannot easily think and realize the adoption of a unified control and data acquisition and processing system to orderly and mutually fused integration of the detection items of the three detection devices.
Compared with the prior art, the invention has the following beneficial effects:
according to the comprehensive membrane detection system, the airtight strength test device, the water immersion test device, the moisture permeability test device and the acquisition control subsystem are matched in a unified manner, so that the airtightness, strength, water immersion tightness and moisture permeability of the membrane can be detected in a unified manner, the airtight strength test device and the water immersion test device share one set of air source subsystem, the combination degree of the test devices is high, test data are collected and processed by the acquisition control subsystem in a unified manner, test operation is controlled by the acquisition control subsystem in a unified manner, the detection efficiency is greatly improved, various detection indexes are compared with one another, and the problem of misdetection can be found in time.
In addition, the airtight strength test device can be used for carrying out airtight and strength tests on membranes with different specifications, and the test device can be used for mounting the membrane with the maximum size phi of 380 mm. The pressure of the input air source is controlled through the control system, the pressure in the test device is detected in real time through the sensor, and the input air source is adjusted through the control system according to the feedback result. The test pressure and the pressure maintaining time of a plurality of stages can be set in the detection system according to the test requirements and are automatically executed by the system. And detecting the air tightness condition of the diaphragm by acquiring the pressure change values at two sides of the diaphragm in real time. After the airtight test is finished, pressurization can be continuously carried out to carry out a strength test, when the sudden drop of the lower cavity pressure is detected, the system automatically stops pressurization, and the highest pressure point is the explosion point. All experimental data can be displayed in the form of a graph. In addition, a special camera is arranged on the outer side of the device, video recording is carried out on the whole test process, and the whole diaphragm deformation process can be observed remotely.
In addition, through the immersion test device, immersion test can be carried out to the diaphragm of different specifications, and the maximum size phi 380mm diaphragm can be installed to the test device. The system simulates test environments of different water depths through air pressure. The pressure of the input air source is controlled through the control system, the pressure in the test device is detected in real time through the sensor, and the input air source is adjusted through the control system according to the feedback result.
In addition, through the moisture permeability test device, moisture permeability tests can be carried out on the membranes with different specifications by using the gas generator, and the moisture permeability test device with the design can be used for carrying out the moisture permeability test on the membranes with the diameter of 100 mm. The moisture permeability test mainly collects data of temperature, humidity and pressure at two sides of the diaphragm, and the system can complete data collection in real time and store the data into a data recorder in an off-line manner under the condition that the system is closed. The testing device can test two diaphragms with the diameter of 100mm at the same time, and the testing efficiency is improved to a certain extent. In order to provide continuous moisture-permeable ambient temperature, the moisture-permeable device is integrally arranged in a closed space, an air conditioner is arranged, and a humidifying component (with built-in tap water) and a dehumidifying component (with built-in desiccant) are designed to regulate the humidity in the closed space, so that the membrane temperature and humidity set point performance detection is carried out.
The airtight strength test device, the water immersion test device and the moisture permeation test device in the system respectively provide accurate detection for various performances of the membrane, detection results of the test devices are collected and processed by the collection control subsystem, detection reports are automatically generated through software, detection processes are unified and standard, and detection efficiency and precision are guaranteed.
Drawings
FIG. 1 is a schematic block diagram of an air supply subsystem of the present invention;
FIG. 2 is a schematic structural diagram of the air tightness strength testing device of the present invention;
FIG. 3 is a schematic view of the immersion test apparatus according to the present invention;
FIG. 4 is a schematic structural view of a moisture permeation test apparatus according to the present invention;
FIG. 5 is a schematic diagram of the acquisition control of the air tightness test of the present invention;
FIG. 6 is a schematic diagram of the acquisition control of the submersion test of the present invention;
FIG. 7 is a schematic diagram of the acquisition control of the moisture permeation test of the present invention;
FIG. 8 is a schematic view of the console of the present invention;
FIG. 9 is a block diagram of the internal connections of the air tightness strength test console of the present invention;
FIG. 10 is a block diagram of the internal connections of the immersion test console of the present invention;
FIG. 11 is a block diagram of the internal connection of the moisture permeable test console of the present invention;
FIG. 12 is a graphical illustration of a hermetic strength test software interface according to the present invention;
FIG. 13 is an interface diagram of the airtight strength test software parameter setting of the present invention;
FIG. 14 is a flowchart of the present invention for controlling the air-tightness strength test software;
FIG. 15 is a software interface diagram for the submersion test in accordance with the present invention;
FIG. 16 is a diagram of a parameter setting interface of the water immersion test software according to the present invention;
FIG. 17 is a flowchart of the software control of the submersion test in accordance with the present invention;
fig. 18 is a software interface diagram for the moisture permeation test of the present invention.
Detailed Description
In order to better understand the present invention, the following examples are further provided to clearly illustrate the contents of the present invention, but the contents of the present invention are not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
Example one
The utility model provides a diaphragm integrated detection system, includes air supply subsystem, water injection subsystem, acquisition control subsystem, airtight intensity test device, soaks test device, passes through wet test device and monitoring device, the air supply subsystem does airtight intensity test device with soak test device provides atmospheric pressure, the water injection subsystem does soak test device provides the water source, acquisition control subsystem is acquisition control respectively airtight intensity test device, soaks test device and passes through wet test device, monitoring device real time monitoring airtight intensity test device.
The air source subsystem comprises an air compressor, an air cylinder, a pressure gauge, a first pressure reducing valve, an airtight pressurizing valve and an airtight pressure relief valve, the air compressor compresses air into the air cylinder, the first pressure gauge, the first pressure reducing valve, the second pressure gauge and the airtight pressure relief valve are sequentially communicated, the airtight pressurizing valve is communicated with a pressurizing port of the airtight strength testing device, and the airtight pressure relief valve is communicated with a pressure relief port of the airtight strength testing device.
The first pressure gauge, the second pressure reducing valve, the third pressure gauge and the immersion pressure valve are sequentially communicated, the immersion pressure valve is communicated with a pressure port of the immersion test device, and the immersion pressure relief valve is communicated with a pressure relief port of the immersion test device.
The water injection subsystem comprises a water immersion and water injection valve, and water enters the water immersion test device through the water immersion and water injection valve.
In the embodiment of the invention, the air source subsystem mainly has the function of generating continuous high-pressure air with stable pressure for an airtight strength test and a water immersion test. According to the test requirements, the air supply pressure of the airtight strength test is not less than 1.6MPa, and the air supply pressure of the immersion test is not less than 20 kpa. Considering the expansion of a future test device, 3 paths (2 paths of reservation) are designed for the air source interface of the airtight strength test, and 3 paths (2 paths of reservation) are designed for the air source interface of the water immersion test. The principle of the air supply subsystem is shown in fig. 1.
The air compressor machine is 2 MPa's gas with air compression, stores in the gas cylinder, because airtight intensity test device and the required air supply pressure of test device that soaks are different, consequently uses 2 relief pressure valves to reduce the pressure of highly-compressed air to the pressure that two test devices need respectively. The first pressure reducing valve reduces the high pressure to 1.2MPa for the airtight strength test device, and the second pressure reducing valve reduces the pressure to 100kPa for the immersion strength test device. Wherein 1.2MPa gas circuit totally has 3 exports, satisfies 3 sets of airtight strength test device uses, and 100kPa gas circuit also has 3 exports, satisfies 3 sets of test device uses of soaking.
The pressure port of every way air supply sets up the pressure valve, and the pressure relief port designs the pressure relief valve, and the unity is controlled by control system, because airtight intensity test pressure is higher, parallelly connected the setting up manual pressure relief valve at the pressure relief valve pipeline, strengthens experimental safety guarantee.
The water immersion test needs to inject water into the water immersion test device, and 3 paths (2 paths for standby) of water injection interfaces are designed in consideration of the expansion of the water immersion test device in the future. The water filling device is characterized in that a workshop faucet is used as a water source, a hose is connected into an air source cabinet, the air source cabinet body is divided into three paths, each path is provided with an electromagnetic valve and is controlled by a control system, and the water filling height is detected through a liquid level meter.
An independent operation table is designed for an air source and water injection, and electromagnetic valves, manual valves, pressure reducing valves, pressure meters and pipelines required by controlling the test devices are integrated in the operation table.
Example two
The diaphragm comprehensive detection system of the embodiment of the invention is different from the first embodiment in that:
as shown in fig. 2 to 4, the airtight strength testing device comprises an airtight device upper cavity 1, an airtight device lower cavity 2, a first membrane switching piece 3, a first observation window 4 and a first installation base 5, wherein the airtight device upper cavity 1 is provided with a first handle 6, a first lifting ring 7, a first observation window 4 and a first test interface 8, the airtight device lower cavity 2 is provided with a second test interface 9, and the first membrane switching piece 3 is installed between the airtight device upper cavity 1 and the airtight device lower cavity 2 and used for fixing a membrane 10.
The immersion test device comprises an immersion device upper cavity 11, an immersion device lower cavity 12, a second membrane switching piece 13, a second observation window and a second mounting base 15, wherein the immersion device upper cavity 11 is provided with a second handle 16, a second lifting ring 17, a second observation window I18 and a third test interface 19; the lower cavity 12 of the soaking device is provided with a second observation window II 20 and a fourth test interface 21; the second membrane switch 13 is installed between the submerger upper chamber 11 and the submerger lower chamber 12, and fixes the membrane 22.
The moisture-permeable test device comprises an upper test chamber 23, a lower test chamber 24, a middle and high humidity chamber 25, a diaphragm replacement piece and a third installation base 26, wherein the lower test chamber 24 is arranged on the third installation base 26, the middle and high humidity chamber 25 is arranged on the lower test chamber 24, the upper test chamber 23 is arranged on the middle and high humidity chamber 25, a first diaphragm replacement piece is arranged between the upper test chamber 23 and the middle and high humidity chamber 25, and a second diaphragm replacement piece is arranged between the lower test chamber 24 and the middle and high humidity chamber 25.
The lower test chamber inner wall is equipped with the hanging water box, set up gas generator on the lower test chamber.
In the embodiment of the invention, the size of the interface of the upper flange plate of the lower test cavity is matched with the size of the lower end surface of the gas generator, the upper flange plate can be directly connected with the gas generator for a moisture permeation test, and the inner side wall of the lower test cavity is provided with the wall-mounted water box which is used as a high-humidity cavity when being combined with the gas generator for a test.
EXAMPLE III
The diaphragm comprehensive detection system of the embodiment of the invention is different from the first embodiment and the second embodiment in that:
as shown in fig. 5-8, the collection control subsystem includes control cabinet, main control system, data recorder, pressure sensor, temperature and humidity sensor and level sensor, the main control system gathers pressure sensor, temperature and humidity sensor and level sensor information, and control airtight forcing valve, airtight pressure relief valve, the water injection valve that soaks, the forcing valve that soaks, the pressure relief valve that soaks open.
The airtight strength test device upper and lower position all sets up first pressure sensor, the test device that soaks is equipped with second pressure sensor with level sensor, it is equipped with threely to pass through wet test device temperature and humidity sensor, first pressure sensor second pressure sensor level sensor with temperature and humidity sensor all with data record appearance passing signal line connects.
In the embodiment of the invention, the upper cavity and the lower cavity of the airtight strength test device are respectively provided with a pressure sensor for acquiring the pressure in the two cavities. The lower cavity is respectively provided with a pressure valve interface and a pressure relief valve interface. During the test, the control software controls the pressurizing valve to be opened, high-pressure gas enters the lower cavity of the device, the pressure value of the lower cavity is collected, when the pressure reaches a required value, the computer closes the gas inlet electromagnetic valve, and the pressure of the lower cavity starts to be maintained and timed. The console continuously collects the pressure values of the upper cavity and the lower cavity, and whether the diaphragm leaks air or not is judged according to the change of the pressure values. When a diaphragm explosion test is carried out, the lower cavity is continuously pressurized until the diaphragm is exploded, the pressure of the lower cavity is continuously increased firstly, the pressure is suddenly reduced when the diaphragm is exploded, and the pressure at the suddenly reduced point is the diaphragm explosion pressure. The burst pressure is automatically recorded, displayed and stored by the control software. After the test is finished, the software of the control console opens the pressure relief valve to relieve the pressure.
Considering that the pressure change is fast in the blasting test, the pressure acquisition frequency of the airtight strength test is preliminarily determined to be 1000 Hz. The range of the selected pressure sensor is 2Mpa, the precision grade is 0.5 percent FS, and the pressure testing precision is 0.01 Mpa.
A monitoring camera is arranged beside the airtight test device, video signals are connected into a special monitoring computer, and the explosion process and deformation conditions of the diaphragm can be checked in the monitoring computer through the camera. The monitoring host has video storage and playback functions.
The diaphragm divides the immersion test device into an upper cavity and a lower cavity, wherein the upper cavity is a simulated water level test cavity, and the lower cavity is an observation cavity. Before the test, a certain amount of water (0-100 mm) is injected into the test area, and if the test is required to be carried out at a higher water level, air pressure can be added into the test cavity to simulate the water depth. And detecting the water immersion condition of the membrane through the observation window.
The upper cavity is respectively provided with a water injection valve interface, a drain valve interface, a pressure relief valve interface, a pressure sensor interface and a liquid level sensor interface. During testing, the control system opens the water injection valve, and a test water source enters the upper cavity and is in contact with the membrane. The water level sensor measures the height of the liquid level in real time, and the system closes the water injection valve after the water level is sufficiently increased. The control system controls the pressurizing valve to pressurize the upper cavity to simulate water at different heights, so that the submergence condition of the diaphragm at different water depths is verified (how much pressure is automatically calculated in the system at different water depths). And after the test is finished, opening the pressure relief valve and the drain valve to relieve the pressure and discharge the medium in the test device.
The maximum simulated water depth is 1m, and the pressure is 10kPa, so the measuring range of the pressure sensor is 20kPa to meet the testing requirement. During actual work, the software automatically calculates corresponding pressure according to the required simulated water depth pressure and loads the corresponding pressure into the test device.
The moisture permeability test device is placed in a closed space and is provided with an air conditioner, and when the test is started, the temperature of the closed space needs to meet the test value according to the requirement.
The middle cavity of the moisture permeable device is a high humidity cavity, and the upper cavity and the lower cavity are test cavities. Before the test, a high-humidity environment of the high-humidity cavity is artificially manufactured, the environment of the test cavity is adjusted to a certain humidity, and the humidity change of the test cavity is observed after a certain time, so that the moisture permeation condition of the membrane is judged.
During the test, a certain amount of water is added into the high-humidity cavity (a water box is hung on the cavity wall), and the water is evaporated under natural conditions to form water vapor, so that the humidity in the high-humidity cavity is increased. The upper and lower test chambers are respectively provided with a humidifying assembly and a dehumidifying assembly, each assembly being connected to the test chamber through a manual valve. The humidifying component is filled with a certain amount of water, and the humidifying valve can be opened when the humidity in the test cavity needs to be increased. The dehumidifying component is an industrial desiccant, and the dehumidifying valve can be opened when the humidity in the testing cavity needs to be reduced, so that the humidity in the testing cavity is reduced. Digital temperature and humidity meters are installed at the temperature and humidity adjusting stop valves, so that the temperature and humidity conditions in the two cavities can be directly observed when the temperature and humidity adjusting stop valves are conveniently adjusted, and the temperature and humidity conditions can be checked without going to a control console.
And pressure and temperature and humidity sensors are arranged in the test cavity and the high-humidity cavity and are used for measuring the pressure, the temperature and the humidity of the inner cavity and the outer cavity in real time. Considering that the moisture permeability test needs to be carried out for a long time, in order to prevent the pressure sensor and the temperature and humidity sensor from failing due to long-term power-on work, each group of sensors are provided with corresponding backup sensors, and when one group of sensors fails, the other group of sensors can be switched to continue to work. In actual work, a tester is required to start up periodically to check test data, control software judges the collected temperature and humidity according to a certain strategy, if abnormity is found, warning information is output to prompt the tester to check the sensor, the tester can power off the fault sensor after confirmation, then a power supply and a data wire of the sensor are manually switched to a backup sensor, and the test is continued after the backup sensor is powered on.
Besides a conventional control host used for collecting corresponding sensor data, the control console is also provided with a data recorder, the data recorder can be opened only to store the sensor data in the long-term test process, the control host does not need to be started for a long time, the data in the data recorder is led into the control host only by starting at regular time (the data lead-in can be completed through RS 232), and the lead-in period can be customized.
And the high-humidity cavity is connected with a vacuum pump through a manual valve, the manual valve can be opened, the vacuum pump is started, and a vacuumizing test is carried out on the high-humidity cavity.
The control console comprises 1 operation console and 1 gas source cabinet, the operation console is respectively provided with 1 video display screen and 1 test control screen, and software systems of each type of test run independently and do not affect each other. In addition, each type of test reserves 2 sets of test interfaces for future expansion. The console is internally provided with a corresponding control host, a driving circuit and a signal conditioning circuit.
Example four
The diaphragm comprehensive detection system of the embodiment of the invention is different from the first, second and third embodiments in that:
as shown in fig. 9 to 18, the console uses a computer (industrial personal computer) as a control core, and two extension cards, namely, a switching value card PCI-6517 and a data acquisition card PCI-6010, are installed in PCI slots of the industrial personal computer. Both cards extend the terminals on the card through a DB37 connection cable to a respective DB37 terminal block for convenient wiring. The relay module consists of 16 relays, the input end of the relay module is controlled by a PCI-6517 signal, and the output end (contact) of the relay module controls the coil of the electromagnetic valve, so that 16 electromagnetic valves can be controlled. The I/V converter is used for converting 4-20 mA current signals of various sensors into 0-5V signals acceptable by a data acquisition card PCI-6010, and can acquire 16 channels and 16 paths of sensor signals.
And control software is operated in the industrial personal computer, the software provides a human-computer interaction interface on one hand, and reads the sensor signal converted by the data acquisition card and performs analysis and calculation on the other hand, and a related control strategy is generated to control the output of the digital I/O so as to control the opening and closing of the electromagnetic valve.
The control console satisfies that 3 sets of test devices should possess 6 way solenoid valve control channels and 6 way sensor acquisition channels at least.
The internal hardware structure of the immersion test and the airtight strength test console is completely consistent with the principle, and the immersion test and airtight strength test console is provided with 16 solenoid valve control channels and 16 sensor data acquisition channels, so that the control and acquisition requirements of 3 test devices can be met.
According to the principle of a moisture-permeable test acquisition control system, 4 sensor signals (a backup sensor is not considered) can be acquired by the control console, and if the requirement that 3 test devices work simultaneously is met, the control console at least has 12 sensor signal acquisition interfaces. Because the valves of the moisture permeability test device all adopt manual valves, the control console does not need to be provided with a solenoid valve control interface, but a data recorder is equipped for recording sensor data uninterruptedly because long-time data recording is needed.
After the initial work and the initial temperature, humidity and pressure conditions are adjusted, the data recorder can be used for recording the sensor signals for a long time, and the data in the data recorder is required to be led into the control computer for backup every period of time from the viewpoint of data protection and safety. Meanwhile, the pressure and temperature and humidity sensors work for a long time, each sensor is backed up, and if the output signal of one sensor is abnormal and the sensor is judged to be in fault in the working process, the backup sensor can be manually accessed into the system to continue working.
The control software is used as the core of the system and is used for test process control, data processing and statistics.
The software is written by Labwindows/CVI.
The whole test process can be controlled by control software, and comprises test starting control, test pressure setting and pressure maintaining time setting; automatically recording relevant data of pressure, temperature and humidity, displaying pressure values in a curve chart and dial form, and storing files; possesses the excessive pressure alarming function to through status indicator lamp demonstration process state. The software system has a safety parameter setting function, and when the system pressure exceeds the set warning pressure, the system automatically stops, so that the safety is protected.
The three test software main interfaces are briefly described below.
1) Airtight strength test software
Set up 2 pilot lamps on the software and show the operating condition of 2 solenoid valves respectively, the lamp is bright and is shown that the solenoid valve is in the open mode, and the lamp goes out and is shown that the solenoid valve is in the closed condition. Each electromagnetic valve is provided with a manual switch, and in a manual mode, the electromagnetic valve can be manually controlled to be opened and closed by operating any manual switch. The two simulated pressure dials respectively represent the upper chamber pressure and the lower chamber pressure of the test apparatus and display pressure values below the dials. The chart control can view historical pressure curves and the like, and corresponding operation buttons are arranged on the left side of the interface and comprise a start button, a parameter setting button, a report viewing button and the like.
The airtight strength test control program can set 6 levels of pressure levels, and set parameters such as pressure value, pressure maintaining time and the like of each level of pressure respectively, so that the setting of pressure increasing and pressure reducing parameters can be completed. During inflation, software reads the pressure value of the lower cavity pressure sensor in real time, and when the pressure value reaches, the pressurizing electromagnetic valve is immediately closed to enter a pressure maintaining state. Meanwhile, safety pressure can be set, and the software immediately opens the pressure relief valve to relieve the pressure of the test device to ensure safety as long as the pressure exceeds the safety pressure at any time.
The software adopts a multithreading technology, a main thread is used for executing human-computer interface interaction, a secondary thread is used for executing a normal test process, a safety protection thread is specially developed, and a pressure value is monitored in real time. The security thread has the highest priority to ensure that the security action can be executed immediately.
The operation flow is as follows:
a) and turning on a control system power supply and an air compressor power supply, and waiting for the indication of a pressure gauge of an air storage tank of the air compressor to be 3 Mpa.
b) Two gas source stop valves of the gas circuit operation table are opened, and the display value of a pressure gauge after the pressure reducer is observed is 1.2 Mpa.
c) And entering a diaphragm airtight strength test control interface after the computer enters the operating system.
d) Clicking a 'parameter setting' button, popping up a setting interface, setting a multi-stage pressure value for boosting and reducing pressure and pressure maintaining time of each stage in the interface, setting the pressure stage number and the cycle number of the experiment, setting safety pressure at the same time, ensuring test safety by the aid of the parameter, and automatically entering a pressure relief state by software when the pressure is out of control and is higher than the pressure value, namely closing an air inlet valve and opening a pressure relief valve.
e) And clicking a 'confirm' button after the parameters are set, and returning to the test interface.
f) After the test is correct, an 'automatic start' button is clicked, and the software automatically starts the voltage boosting and reducing test according to the set parameters.
g) In the test process, if emergency stop is needed, an 'emergency stop' button can be clicked, and the software automatically enters a pressure relief state, namely the pressurizing valve is closed and the pressure relief valve is opened.
h) In the test process, the airtight condition of the diaphragm can be judged according to the pressure change condition.
i) When a bursting test is carried out, the pressurizing valve is opened until the diaphragm bursts, and the software automatically records the time information and the pressure information of the bursting point of the diaphragm during the bursting of the diaphragm;
j) after the test is finished, the pressure curve of the test process can be checked through the chart control;
k) when the pressure of the system needs to be released after the test is finished, the air compressor is firstly closed, then the air release stop valve behind the air compressor is opened, after the pressure of the air bottle is released, the stop valves in front of and behind the pressure release valve are opened, and the pressurizing electromagnetic valve and the pressure release electromagnetic valve are manually opened in the control interface until the pressure in the pipeline system is completely released.
2) Water immersion test software
Set up 4 pilot lamps on the software and show the operating condition who corresponds 4 solenoid valves respectively, the lamp is bright and is shown that the solenoid valve is in the open mode, and the lamp goes out and is shown that the solenoid valve is in the closed mode. Each electromagnetic valve is provided with a manual switch, and in a manual mode, the electromagnetic valves can be controlled to be opened and closed manually by operating any manual switch. The two simulated pressure dials respectively represent the upper cavity pressure and the air source pressure of the test device, and the liquid level indicating control indicates the liquid level height in the upper cavity of the current test device. The chart control can view historical pressure curves and the like, and corresponding operation buttons are arranged on the left side of the interface and comprise a start button, a parameter setting button, a report viewing button and the like.
The operation flow is as follows:
a) turning on a control system power supply and an air compressor power supply, and waiting for the indication of a pressure gauge of an air storage tank of the air compressor to be 3 Mpa;
b) opening two gas source stop valves of the gas circuit operation table, and observing the display value of a pressure gauge after the water soaking pressure reducer to be 100 kpa;
c) and after the computer enters the operating system, entering a control interface of the immersion test system.
d) Clicking a parameter setting button, popping up a parameter setting interface, setting 3 parameters of simulated water depth, pressure maintaining time and safe pressure in the interface, and automatically calculating and displaying the required pressurizing pressure by software according to the set simulated water depth;
e) after the setting is finished, clicking a 'confirm' button, returning to an interface shown in fig. 11, clicking an 'automatic start' button in the interface shown in fig. 11, automatically pressurizing the device by software according to the set parameters, entering a pressure maintaining state after the pressure is reached until the pressure maintaining time is reached, and entering a pressure relief state if the pressure value is monitored to be greater than the set safety pressure in the pressurizing and pressure maintaining processes, namely closing a pressurizing valve and opening the pressure relief valve;
f) in the test process, the pressure in the cavity, the actual liquid level and the simulated liquid level can be checked through a pressure gauge on the interface;
g) after the test is finished, the pressure curve of the test process can be checked through the pressure curve chart control;
h) the pressure relief operation of the test device and the pipeline system is consistent with the pressurization operation method of the airtight strength test.
3) Moisture permeability test software
The software can directly read the collected data in the recorder and then display the data on the page. By selecting the acquisition time, the high humidity chamber pressure and the test chamber pressure, the high humidity chamber temperature and the test chamber temperature, and the high humidity chamber humidity and the test chamber humidity of the test device acquired at the time can be respectively displayed on the corresponding two simulated pressure dials. The chart control can view historical pressure curves and the like, and the left side of the interface is provided with a corresponding operation button.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The membrane comprehensive detection system is characterized in that: the air source subsystem provides air pressure for the airtight strength testing device and the water immersion testing device, the water injection subsystem provides a water source for the water immersion testing device, the acquisition control subsystem respectively acquires and controls the airtight strength testing device, the water immersion testing device and the water penetration testing device, and the monitoring device monitors the airtight strength testing device in real time.
2. The diaphragm integrated detection system of claim 1, wherein: the air source subsystem comprises an air compressor, an air cylinder, a pressure gauge, a first pressure reducing valve, an airtight pressurizing valve and an airtight pressure relief valve, the air compressor compresses air into the air cylinder, the first pressure gauge, the first pressure reducing valve, the second pressure gauge and the airtight pressure relief valve are sequentially communicated, the airtight pressurizing valve is communicated with a pressurizing port of the airtight strength testing device, and the airtight pressure relief valve is communicated with a pressure relief port of the airtight strength testing device.
3. The integrated diaphragm test system of claim 2, wherein: the first pressure gauge, the second pressure reducing valve, the third pressure gauge and the immersion pressure valve are sequentially communicated, the immersion pressure valve is communicated with a pressure port of the immersion test device, and the immersion pressure relief valve is communicated with a pressure relief port of the immersion test device.
4. The membrane integrated test system of claim 3, wherein: the water injection subsystem comprises a water immersion and water injection valve, and water enters the water immersion test device through the water immersion and water injection valve.
5. The membrane integrated test system of claim 4, wherein: the collection control subsystem includes control cabinet, main control system, data record appearance, pressure sensor, temperature and humidity sensor and level sensor, the main control system gathers pressure sensor, temperature and humidity sensor and level sensor information, and control airtight forcing valve, airtight pressure relief valve, flooding water injection valve, flooding forcing valve, flooding pressure relief valve open and stop.
6. The integrated diaphragm test system of claim 5, wherein: the airtight strength test device upper and lower position all sets up first pressure sensor, the test device that soaks is equipped with second pressure sensor with level sensor, it is equipped with threely to pass through wet test device temperature and humidity sensor, first pressure sensor second pressure sensor level sensor with temperature and humidity sensor all with data record appearance passing signal line connects.
7. The diaphragm integrated detection system of claim 6, wherein: airtight strength test device includes that airtight device epicoele, airtight device lower chamber, first diaphragm switch, first observation window and first installation base, the airtight device epicoele is equipped with the first in command, first rings, first observation window and first test interface, the airtight device lower chamber is equipped with the experimental interface of second, first diaphragm switches the piece and installs the airtight device epicoele with between the airtight device lower chamber for fixed diaphragm.
8. The integrated diaphragm test system of claim 7, wherein: the immersion test device comprises an immersion device upper cavity, an immersion device lower cavity, a second membrane switching piece, a second observation window and a second mounting base, wherein the immersion device upper cavity is provided with a second handle, a second lifting ring, a second observation window I and a third test interface; a second observation window II and a fourth test interface are arranged in the lower cavity of the soaking device; the second membrane switching piece is arranged between the upper cavity of the soaking device and the lower cavity of the soaking device and used for fixing the membranes.
9. The integrated diaphragm test system of claim 8, wherein: the moisture-permeable test device comprises an upper test chamber, a lower test chamber, a middle and high humidity chamber, a diaphragm replacement piece and a third installation base, wherein the third installation base is provided with the lower test chamber, the lower test chamber is provided with the middle and high humidity chamber, the middle and high humidity chamber is provided with the upper test chamber, the upper test chamber is provided with a first diaphragm replacement piece between the middle and high humidity chamber, and the lower test chamber is provided with a second diaphragm replacement piece between the middle and high humidity chamber.
10. The integrated diaphragm test system of claim 9, wherein: the lower test chamber inner wall is equipped with the hanging water box, set up gas generator on the lower test chamber.
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Application publication date: 20200414 |