CN114397240A - Acid-rain-corrosion-normal-temperature drying multi-physical-field intelligent regulation test device and method - Google Patents

Acid-rain-corrosion-normal-temperature drying multi-physical-field intelligent regulation test device and method Download PDF

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CN114397240A
CN114397240A CN202210071089.5A CN202210071089A CN114397240A CN 114397240 A CN114397240 A CN 114397240A CN 202210071089 A CN202210071089 A CN 202210071089A CN 114397240 A CN114397240 A CN 114397240A
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vacuum
barrel
test
circulating water
solution
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郑志
朱国庆
王伟
苏国韶
潘鹏志
黄书岭
郑虹
孙钱程
曹亚军
黄小华
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Guangxi University
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Guangxi University
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Abstract

An acid rain erosion-normal temperature drying multi-physical field intelligent regulation test device and a method belong to the technical field of geotechnical engineering, and comprise a vacuum barrel, an objective table, a vacuum device, an acid rain erosion device and an intelligent monitoring compensation device; the vacuum barrel comprises a barrel body and a barrel cover, the barrel cover is detachably mounted at the opening end of the barrel body, a vacuum device, an acid-rain corrosion device and an intelligent monitoring compensation device are connected to the barrel cover, and the objective table is placed in an inner cavity of the barrel body. The test device has the characteristics of integration of acid-rain corrosion and vacuum drying, can simulate the acid-rain corrosion action of different corrosion strengths, has the functions of comprehensive monitoring and intelligent regulation of multiple physical fields, namely temperature, pressure and ion concentration, has the characteristics of combination of the multiple physical fields and the acid-rain corrosion simulation, and realizes the visual observation of the rock crack propagation evolution process under the acid-rain corrosion and dry-wet circulation.

Description

Acid-rain-corrosion-normal-temperature drying multi-physical-field intelligent regulation test device and method
Technical Field
The invention belongs to the technical field of geotechnical engineering, and particularly relates to an acid rain erosion-normal-temperature drying multi-physical-field intelligent regulation test device and method for multi-physical-field intelligent regulation and simulation under a normal-temperature condition.
Background
With the rapid development of economy, environmental pollution is increasingly serious, and acid rain weather frequently occurs. The acid rain contains a large amount of acidic corrosive liquid, so that the rock porosity is improved by generating a corrosive effect on rock components, and the mutual communication and crack expansion of micropores are promoted to further influence the mechanical properties of the rock; on the other hand, the crack and the joint of the rock can react with cement between the rock cracks and joints to weaken the rock mass and further destroy the stability of the rock mass. Due to regional difference and uncertainty of acid rain in natural environment, long-term and systematic field test tracking research cannot be carried out, compared with outdoor test, indoor test is easy to realize environmental variable control, and an effective research approach is provided for researching the problems.
The common test method adopted in the current test has the following problems:
1. in a common test, an acid solution and contained chemical components of acid rain are simulated by modulating a chemical reagent, most of the subsequent tests are simply soaked in the solution, and the research of acid rain corrosion simulation and comprehensive intelligent monitoring and regulation of multiple physical fields is rarely reported.
2. The drying method in the common test is common air drying or high-temperature drying, the time and cost required by natural air drying are large, and multiple cyclic tests in a short time are not provided; because the high temperature environment can cause destruction to the test piece inner structure, cause the difference of test piece after the drying with former rock test piece inner structure to influence the accuracy of test result, and the high temperature environment influence is unfavorable for some supervisory equipment's installation and use, and to with the unable timely record of some changes that take place in the test piece drying process, it is unfavorable to the analysis of test result after the experiment.
3. In the ordinary solution soaking and simple leaching circulation, the pH value of the solution is not controlled, or only simple manual regulation and control are carried out, and the pH value of the leaching solution is not ensured to be constant and timely regulated and controlled;
4. when the solution is circulated by the spray etching, the flow of the circulated solution is not monitored and counted, and the flow rate of the solution, namely the spray etching intensity, is controlled and adjusted;
5. in a common test, the control of the test temperature is lack of flexibility, the day and night temperature difference change and the seasonal temperature change are not simulated, and the similarity between the test environment and the original environment is not high;
based on the problems, the invention provides an integrated intelligent regulation test device for simulating multi-physical-field acid-rain erosion-dry-wet circulation, which aims to solve the problems in the conventional test method.
Disclosure of Invention
The invention aims to provide an acid rain erosion-normal temperature drying multi-physical-field intelligent regulation test device and method, which solve the problem of influence of variable conditions such as ion concentration and temperature in an acid rain erosion test and a drying test process in an intelligent regulation mode, and avoid waste of test cost by combining a vacuum drying test and an acid rain erosion test.
The acid rain corrosion-normal temperature drying multi-physical field intelligent regulation test device comprises a vacuum barrel, an objective table, a vacuum device, an acid rain corrosion device and an intelligent monitoring compensation device; the vacuum barrel comprises a barrel body and a barrel cover, the barrel cover is detachably mounted at the opening end of the barrel body, a vacuum device, an acid-rain corrosion device and an intelligent monitoring compensation device are connected to the barrel cover, and the objective table is placed in an inner cavity of the barrel body.
The vacuum device comprises a vacuum pump, a vacuum meter, an air suction valve and an air inlet valve, the vacuum pump is connected with a four-way pipe through a vacuum pumping pipeline, the air suction valve and the air inlet valve are installed on a horizontal pipe of the four-way pipe, the air suction valve is close to one end of the vacuum pump, the vacuum meter is installed at the top end of a vertical pipe of the four-way pipe, and the bottom end of the vertical pipe of the four-way pipe is installed on a barrel cover and communicated with an inner cavity of the barrel body.
The outer side of the barrel body is wrapped with a heat insulation layer.
The acid rain spray corrosion device comprises a circulating water pump, a water circulating water outlet valve, a water circulating water injection valve and a shower tray, wherein the shower tray is installed in the center of the lower surface of a barrel cover, the water circulating water outlet valve and the water circulating water injection valve are installed on the barrel cover of the vacuum barrel and communicated with the inner cavity of the barrel body, the circulating water pump is connected with one end of the water circulating water outlet valve through a water inlet of the circulating water pump on the circulating water pump, the other end of the water circulating water outlet valve is located on the inner side of the barrel cover and connected with a water pipe extending into a solution, the circulating water pump is connected with the water circulating water injection valve through a water outlet of the circulating water pump on the circulating water pump, a flowmeter is installed between a water outlet of the circulating water pump and the water circulating water injection valve, the flowmeter is arranged close to one end of the water outlet of the circulating water pump, and the water circulating water injection valve is connected with the shower tray through a water pipe inside the barrel body.
The object stage comprises a plurality of tables and a plurality of supporting columns, the tables are arranged in parallel at equal intervals, adjacent tables are fixedly connected through the supporting columns, the supporting columns are also arranged at four corners of the lower surface of the lowest table, and heating lamp tubes are arranged at equal intervals on the lower surfaces of the tables.
The intelligent monitoring compensation device comprises a micro-solution injection pump, a solution compensation injection valve, a data acquisition controller, an ion concentration meter, a wire arranging hole, a temperature control switch, an ultra-clear camera and a constant temperature solution heater, wherein the liquid outlet end of the micro-solution injection pump is connected with the solution compensation injection valve which is arranged on the barrel cover and extends into the barrel body, the ion concentration meter is arranged on the barrel cover, a testing electrode on the ion concentration meter extends into the barrel body, a base with the wire arranging hole is fixedly arranged on a through hole of the barrel cover, the temperature control switch is positioned on the outer side of the barrel cover, a temperature measuring probe on the temperature control switch penetrates through the wire arranging hole and extends into the barrel body, the ultra-clear camera and the constant temperature solution heater are both arranged on the lower surface of the barrel cover, the ion concentration meter is connected with the input end of the data acquisition controller, and the output end of the data acquisition controller is connected with the micro-solution injection pump; the temperature control switch is connected with a plug of an aviation socket arranged at the position of the electrifying port, the aviation socket is connected with the heating lamp tube on the objective table, and the heating lamp tube is controlled to be opened and closed through the temperature control switch.
The micro-solution injection pump comprises a horizontal plate, a vertical plate, an injector mounting plate, a push plate, a guide rail, a threaded rod and a motor, a vertical plate is arranged at one end of the upper surface of the horizontal plate, two injector mounting plates which are arranged in parallel are arranged at the other end of the upper surface of the horizontal plate, an injector mounting groove is arranged on the upper surface of each injector mounting plate, the injectors are mounted in the injector mounting grooves, the injector mounting plate positioned on the inner side is connected with the vertical plate through two guide rails, a motor is fixedly mounted on the outer side surface of each vertical plate, the tail end of an output shaft of the motor penetrates through a through hole in the vertical plate and is connected with one end of a threaded rod through a coupler, the other end of the threaded rod is connected with the injector mounting plate positioned on the inner side, and the guide rail and the threaded rod are provided with push plates, and the push plates move along the threaded rod and the guide rail under the rotating action of the threaded rod and are used for pushing a push rod of the injector to complete the propelling action.
The use method of the acid rain etching-normal temperature drying multi-physical field intelligent regulation test device comprises the following steps:
step 1, before a leaching test is started, selecting the number of layers of a table plate and the height of a support column according to the number of test pieces subjected to primary leaching in a test scheme, uniformly placing the test pieces to be leached on an object stage without a heating lamp tube, ensuring a certain gap to be reserved between the leaching test pieces when the test pieces are placed so as to ensure a leaching effect, placing the object stage with the placed test pieces in a vacuum barrel and at the center of the barrel bottom after the test pieces are placed, and sleeving a heat insulation layer on the outer side of the vacuum barrel;
step 2, after the object stage is placed, slowly adding a test solution prepared in advance into the barrel along the inner wall of the barrel, wherein the liquid level of the test solution in the vacuum barrel is required to be below the lower surface of the lowest layer of the leaching test piece during a leaching experiment;
step 3, sequentially mounting the constant-temperature solution heater, the shower tray and the ultra-clear camera on a barrel cover, aligning the barrel cover to the opening of the barrel body after all components are arranged, ensuring that the heating section of the constant-temperature solution heater is completely immersed in the test solution when the barrel cover is mounted, and also placing the test electrode of the ion concentration meter in the test solution; selecting vacuum environment etching or non-vacuum environment etching according to specific test requirements;
step 4, connecting the outside of a water circulation water outlet valve on the barrel cover of the vacuum barrel to a water inlet of a circulating water pump on the circulating water pump through a water pipe, and connecting the inside of the water circulation water outlet valve to the position below the liquid level in the barrel through a water pipe; the water outlet of a circulating water pump of the circulating water pump is connected with a flowmeter and then is connected with a water circulating water injection valve on the barrel cover of the vacuum barrel, and the inside of the water circulating water injection valve is connected with a shower tray to form water circulation; connecting a solution compensation liquid injection valve with an injector outlet on a micro-solution injection pump; then connecting the ion concentration meter and the micro-solution injection pump to a data acquisition controller;
step 5, switching on a power supply, heating the test solution through a constant-temperature solution heater, simultaneously opening an air extraction valve, and vacuumizing a vacuum barrel through a vacuum pump; starting an ultra-clear camera to monitor the whole test process, and starting a circulating water pump to start a leaching experiment after the preset test temperature and vacuum degree are reached;
step 6, after the leaching experiment is finished, cutting off a power supply, opening an air inlet valve of a vacuum meter, performing air inlet treatment in a vacuum environment, opening a barrel cover to remove a constant-temperature solution heater after the air pressure inside and outside a vacuum barrel is balanced, drawing a test electrode of an ion concentration meter below the barrel cover, and copying the monitoring data inside the ultra-clear camera; taking the objective table with the leaching test piece out of the vacuum barrel, pouring the test solution out of the vacuum barrel, and cleaning to finish the leaching test;
step 7, before a vacuum drying experiment, mounting heating lamp tubes on the lower surfaces of a plurality of tables on an objective table, firstly laying a layer of drying agent on the bottom of a vacuum barrel and the tables of the objective table, then uniformly arranging the drenched test piece on the tables of the objective table, and when the drenched test piece is placed, ensuring a space between the test piece and the test piece so as to avoid influencing the drying effect; placing the objective table with the well placed corrosion test piece at the center of the vacuum barrel, connecting a power line of the heating lamp tube to an aviation socket at a power-on port, and connecting a plug of the aviation socket to a temperature control switch; finally, the temperature control switch probe is arranged in a gap between the objective table and the vacuum barrel and is positioned in the middle of the vacuum barrel;
step 8, switching on a power supply, opening an air extraction valve, starting a vacuum pump to perform vacuum pumping treatment, heating a lamp tube at the same time, performing heating treatment on the drying temperature in the vacuum barrel, and starting vacuum drying treatment;
and 9, after the vacuum drying treatment is finished, cutting off a power supply, closing the vacuum pump and the heating lamp tube, removing the heat insulation layer, opening an air inlet valve after the vacuum barrel is kept stand and cooled to perform vacuum environment air inlet treatment, opening a barrel cover after the air pressure inside and outside the vacuum barrel is balanced, copying the monitoring data inside the ultra-clean camera, then taking out the objective table, cleaning a drying agent and a leaching test piece on the objective table, removing the heating lamp tube, and preparing to start the next test cycle.
The invention has the following beneficial effects:
1. the test device has the characteristics of integration of acid-rain corrosion and vacuum drying, can simulate the acid-rain corrosion action of different corrosion strengths, has the functions of comprehensive monitoring and intelligent regulation of multiple physical fields, namely temperature, pressure and ion concentration, has the characteristics of combination of the multiple physical fields and the acid-rain corrosion simulation, and realizes the visual observation of the rock crack propagation evolution process under the acid-rain corrosion and dry-wet circulation.
2. The test device adopts vacuum normal temperature drying, reduces the drying temperature on the premise of ensuring the drying rate, avoids the waste of time cost and the damage of high-temperature environment to the internal structure of the test piece, and is additionally provided with a high-definition camera device to timely record changes generated in the test process of the test piece so as to facilitate the test analysis after the test is finished.
3. The injection valve is a pH value adjusting valve, is externally connected with a solution injector, is controlled by a micro-injection pump to inject, is connected to a pH meter by a data acquisition controller, and is used for controlling the micro-injection pump to operate and close by reading the pH meter so as to achieve the purpose of intelligently regulating and controlling the pH value of the etching solution.
4. The testing device is provided with a flow meter, an ion meter and other monitoring devices, and can record the flow of the etching solution and the change curve of the internal components of the etching solution.
5. The device is mainly made for the ya keli board so that experimental observation, and the vacuum barrel wall is equipped with the heat preservation so that with the regulation control of vacuum barrel internal temperature so that simulate day and night difference in temperature change and the change of seasonal temperature, improve the similarity of experimental environment and primary environment.
Drawings
FIG. 1 is a front view of an intelligent regulation and control testing device for multiple physical fields of acid rain etching and normal temperature drying;
FIG. 2 is a detailed view of the empty barrel cover of the intelligent regulation and control test device for multiple physical fields of acid rain corrosion and normal temperature drying according to the present invention;
FIG. 3 is a detailed view of a micro-solution injection pump of the acid rain etching-ambient temperature drying multi-physical field intelligent regulation test device of the present invention;
FIG. 4 is a front view of an objective table of the acid rain etching-ambient temperature drying intelligent regulation test device of the present invention;
FIG. 5 is a detailed circuit layout of the current-carrying port of the acid rain etching-ambient temperature drying multi-physical field intelligent regulation test device of the present invention;
FIG. 6 is a schematic view of a vacuum barrel and an objective table of the acid rain etching-ambient temperature drying multi-physical field intelligent regulation test device;
1-barrel body, 2-objective table, 201-heating lamp tube, 202-lamp tube connecting wire, 203-table, 204-support column, 3-barrel cover, 4-vacuum pump, 5-ion concentration meter, 501-testing electrode, 6-water circulation water outlet valve, 7-water circulation water injection valve, 8-electrifying port, 9-vacuum meter, 901-air extraction valve, 902-air inlet valve, 10-solution compensation liquid injection valve, 11-micro solution injection pump, 1101-horizontal plate, 1102-vertical plate, 1103-injector mounting plate, 1104-push plate, 1105-guide rail, 1106-threaded rod, 1107-motor, 1108-injector, 12-base with wire arranging hole, 13-shower tray, 14-temperature measuring probe, 15-circulating water pump, 1501-circulating water pump water inlet, 1502-circulating water pump water outlet, 16-ultra-clear camera, 17-constant temperature solution heater, 18-flowmeter, 19-heat preservation layer and 20-data acquisition controller.
Detailed description of the preferred embodiments
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 6, the acid rain etching-normal temperature drying multi-physical field intelligent regulation test device comprises a vacuum barrel, an object stage 2, a vacuum device, an acid rain etching device and an intelligent monitoring compensation device; the vacuum barrel consists of a barrel body 1 and a barrel cover, the barrel cover 3 is detachably mounted at the opening end of the barrel body 1, the barrel cover 3 is connected with a vacuum device, an acid rain spraying device and an intelligent monitoring compensation device, the objective table 2 is placed in the inner cavity of the barrel body 1, the size of the vacuum barrel is 500mm multiplied by 600mm in diameter, and the size of the length, the width and the height of the objective table 2 is 300mm multiplied by 500 mm; according to the invention, the influence of variable conditions such as ion concentration and temperature in the acid rain erosion test and the drying test process is solved in an intelligent regulation mode, and the waste of test cost is avoided by combining the vacuum drying test and the acid rain erosion test. The intelligent regulation and control testing device has the advantages of simplicity, convenience and high accuracy, and the solution flow monitoring and counting device is added, so that the intelligent regulation and control testing device has a good auxiliary effect on analyzing the corrosion action after the test. The device has the function of normal-temperature vacuum drying, has the characteristics of short drying time and low drying temperature, and avoids the problem that the internal structure of the test specimen is damaged by high-temperature environment drying.
The vacuum device comprises a vacuum pump 4, a vacuum meter 9, an air suction valve 901 and an air inlet valve 902, wherein the vacuum pump 4 is connected with a four-way pipe through a vacuum pumping pipeline, the air suction valve 901 and the air inlet valve 902 are installed on a horizontal pipe of the four-way pipe, the air suction valve 901 is arranged close to one end of the vacuum pump 4, the vacuum meter 9 is installed at the top end of a vertical pipe of the four-way pipe, and the bottom end of the vertical pipe of the four-way pipe is installed on a barrel cover 3 and is communicated with an inner cavity of the barrel body 1.
The outer side of the barrel body 1 is wrapped with an insulating layer 19.
The acid rain etching device comprises a circulating water pump 15, a water circulating water outlet valve 6, a water circulating water injection valve 7 and a shower tray 13, wherein the shower tray 13 is arranged at the center of the lower surface of a barrel cover 3, the water circulating water outlet valve 6 and the water circulating water injection valve 7 are arranged on the barrel cover 3 of the vacuum barrel and are communicated with the inner cavity of the barrel body 1, the circulating water pump is connected with one end of the water circulating water outlet valve 6 through a circulating water pump water inlet 1501 on the circulating water pump, the other end of the water circulating water outlet valve 6 is positioned on the inner side of the barrel cover 3 and is connected with a water pipe extending into a solution, the circulating water pump is connected with the water circulating water injection valve 7 through a circulating water pump water outlet 1502 on the circulating water pump, a flowmeter 18 is arranged between the circulating water outlet 1502 and the water circulating water injection valve 7, the flowmeter 18 is arranged close to one end of the circulating water pump water outlet 1502, and the water circulating water injecting valve 7 is connected with the shower tray 13 through the water pipe in the barrel body 1, the circulating water pump 15 is a DIP peristaltic pump, the erosion intensity is controlled by the output power of the circulating water pump 15, and the flow rate is monitored by a flow meter 18.
The object stage 2 comprises two platens 203 and eight pillars 204, the two platens 203 are arranged in parallel and at equal intervals, the two platens 203 are fixedly connected through the pillars 204, the pillars 204 are also arranged at four corners of the lower surface of the platen 203 at the lowest side, heating lamps 201 are arranged at equal intervals on the lower surfaces of the two platens 203, and the heating lamps 201 are connected with aviation sockets on the power-on port 8 through lamp connecting wires 202 on the heating lamps.
The intelligent monitoring compensation device comprises a micro-solution injection pump 11, a solution compensation injection valve 10, a data acquisition controller 20, an ion concentration meter 5, a base 12 with a wiring hole, a temperature control switch, an ultra-clear camera 16 and a constant temperature solution heater 17, wherein the liquid outlet end of the micro-solution injection pump 11 is connected with the solution compensation injection valve 10 which is arranged on the barrel cover 3 and extends into the barrel body 1, the ion concentration meter 5 is arranged on the barrel cover 3, a test electrode 501 on the ion concentration meter extends into the barrel body 1, the ion concentration is monitored through the ion concentration meter 5, the base 12 with the wiring hole is fixedly arranged on a through hole of the barrel cover 3, a temperature measuring probe 14 which is positioned on the outer side of the barrel cover 3 penetrates through the wiring hole and extends into the barrel body 1, the drying temperature in the barrel is sensed through the temperature measuring probe 14, and whether the aviation socket at the power-on port 8 is electrified or not is controlled according to the drying temperature, the work start and stop of the heating lamp tube 201 are controlled by the control device to form automatic compensation of drying temperature, the ultra-clear camera 16 and the constant temperature solution heater 17 are both arranged on the lower surface of the barrel cover 3, the ion concentration meter 5 is connected with the input end of the data acquisition controller 20, the micro solution injection pump 11 is connected with the output end of the data acquisition controller 20, the data acquisition controller 20 is used for acquiring and monitoring PH value data fed back by the ion concentration meter and sending an instruction to the micro solution injection pump 11, the PH value compensation adjustment is carried out by the injection of the micro solution injection pump 11 to achieve the automatic adjustment and compensation of a test solution, the plug of an aviation socket is plugged on a temperature control switch, and the heating lamp tube is connected to an aviation socket at the power-on port 8; the external form of the test piece is monitored through the ultra-clear camera 16, the test piece is stored on a memory card on the test piece, and the temperature of the etching solution is controlled through the constant-temperature solution heater 17.
The micro-solution injection pump 11 comprises a horizontal plate 1101, a vertical plate 1102, injector mounting plates 1103, a push plate 1104, guide rails 1105, a threaded rod 1106 and a motor 1107, wherein two vertical plates 1102 are integrally formed at one end of the upper surface of the horizontal plate 1101, two injector mounting plates 1103 arranged in parallel are integrally formed at the other end of the upper surface of the horizontal plate 1103, an injector mounting groove is formed in the upper surface of the injector mounting plates 1103, the injector 1107 is mounted in the injector mounting groove, the axial movement of the injector 1107 is limited by a baffle plate on the cylinder of the injector 1107, the injector mounting plate 1103 positioned on the inner side is connected with the vertical plate 1102 through the two guide rails 1105, the motor 1107 is fixedly mounted on the outer side surface of the vertical plate 1102, the motor 1107 is connected with a data acquisition controller 20, the tail end of an output shaft of the motor 1107 penetrates through a through hole on the vertical plate 1102 and is connected with one end of the threaded rod 1106 through a coupler, and the other end of the threaded rod 1106 is connected with the injector mounting plate 1103 positioned on the inner side, the micro solution injection pump 11 is characterized in that the guide rail 1105 and the threaded rod 1106 are provided with a push plate 1104, the push plate 1104 moves along the threaded rod 1106 and the guide rail 1105 under the rotation action of the threaded rod 1106 and is used for pushing a push rod of the injector 1108 to complete the propelling action, the whole frame of the micro solution injection pump 11 and the push plate 1104 mainly comprise high-strength acrylic plates, a 304 stainless steel round guide rail lengthened flange bearing with the diameter of 8mm is selected as a guide rail 1105 bearing, an overlong high-power 42 stepping motor is adopted as the stepping motor 1107, and the single-turn setting is that the 3200 step precision reaches 0.0003125 mm; the stepper motor is connected to the data acquisition controller 20 in the experimental process, and the solution data of the ion concentration meter 5 monitored by the data acquisition controller 20 is regulated and controlled, namely, the injection amount of the micro-solution injection pump 11 is controlled by the data monitoring of the ion meter so as to achieve the purpose that the components of the test solution are always intelligently regulated and controlled within the range of the preset interval.
The use method of the acid rain etching-normal temperature drying multi-physical field intelligent regulation test device comprises the following steps:
step 1, before a leaching test is started, selecting the number of layers of a table plate and the height of a support column according to the number of samples subjected to primary leaching in a test scheme, uniformly placing the samples to be leached on an object stage 2 without a heating lamp tube 201, ensuring that a certain gap is reserved between the leaching samples when the samples are placed so as to ensure a leaching effect, placing the object stage 2 with the placed samples in a vacuum barrel and in the center of the barrel bottom after the samples are placed, and sleeving a heat insulation layer 19 on the outer side of the vacuum barrel;
step 2, after the object stage 2 is placed, slowly adding a test solution prepared in advance into the barrel body 1 along the inner wall of the barrel body 1, wherein the liquid level of the test solution in the vacuum barrel is required to be below the lower surface of the lowest layer of the corrosion test piece during the corrosion test;
step 3, sequentially installing a constant-temperature solution heater 17, a shower tray 13 and an ultra-clear camera 16 on a barrel cover 3, aligning the barrel cover 3 to an opening of the barrel body 1 after all components are arranged, ensuring that a heating section of the constant-temperature solution heater 17 is completely immersed in a test solution when the barrel cover 3 is installed, placing a test electrode 501 of an ion concentration meter 5 in the test solution, monitoring the pH value of the solution through the ion concentration meter 5 and feeding back the pH value to a data acquisition controller 20; selecting vacuum environment etching or non-vacuum environment etching according to specific test requirements;
step 4, connecting the outside of a water circulation water outlet valve 6 on the barrel cover 3 of the vacuum barrel to a water inlet 1501 of a circulating water pump on the circulating water pump through a water pipe, and connecting the inside of the water circulation water outlet valve to the position below the liquid level in the barrel through a water pipe; a water outlet 1502 of a circulating water pump of the circulating water pump is connected with a flowmeter 18 and then is connected with a water circulating injection valve 7 on a barrel cover 3 of the vacuum barrel, and the inside of the water circulating injection valve 7 is connected with a shower tray 13 to form water circulation; connecting a solution compensation liquid injection valve 10 with an injector outlet on a micro-solution injection pump 11; then the ion concentration meter 5 and the micro-solution injection pump 11 are connected to the data acquisition controller 20;
step 5, switching on a power supply, heating the test solution by using a constant-temperature solution heater 17, simultaneously opening an air extraction valve 901, and vacuumizing a vacuum barrel by using a vacuum pump 4; starting the ultra-clear camera 16 to monitor the whole test process, and starting the circulating water pump to start the leaching experiment after reaching the preset test temperature and vacuum degree; in the experiment process, the ion concentration meter 5 feeds the acquired pH value of the solution back to the data acquisition controller 20 in real time, the data acquisition controller 20 sends an instruction to the micro-solution injection pump 11 according to the pH value, controls the motor 1107 to work, drives the threaded rod 1106 to rotate, further drives the push plate 1104 to push the injector 1108 to compensate the pH value of the solution in the vacuum barrel, ensures that the pH value in the whole leaching process is unchanged, and controls the motor to stop working after the set pH value of the experiment solution is reached;
step 6, after the leaching experiment is finished, cutting off a power supply, opening an air inlet valve 902 of a vacuum meter 9, performing air inlet treatment in a vacuum environment, opening a barrel cover 3 to remove a constant-temperature solution heater 17 after the air pressure inside and outside the vacuum barrel is balanced, collecting a test electrode 501 of an ion concentration meter 5 below the barrel cover 3, taking down a memory card on an ultra-clear camera 16, and copying monitoring data of the memory card; taking the objective table 2 with the leaching test piece out of the vacuum barrel, then pouring the test solution out of the vacuum barrel for cleaning, and finishing the leaching test;
step 7, before a vacuum drying experiment, installing the heating lamp tubes 201 on the lower surfaces of a plurality of tables on the objective table 2, firstly laying a layer of drying agent on the bottom of the vacuum barrel and the table of the objective table 2, then uniformly arranging the drenched test piece on the table of the objective table 2, and when the drenched test piece is placed, ensuring a space between the test piece and the test piece so as to avoid influencing the drying effect; after the objective table 2 with the well placed corrosion test piece is placed at the center of the vacuum barrel, the lamp tube connecting wire 202 of the heating lamp tube 201 is connected to the aviation socket of the electrifying port 8, the aviation socket is connected to the temperature control switch in an inserting mode, and finally the temperature measuring probe 14 of the temperature control switch is placed in a gap between the objective table 2 and the vacuum barrel and is located in the middle of the vacuum barrel;
step 8, switching on a power supply, opening the air extraction valve 901, starting the vacuum pump 4 to perform vacuum pumping treatment, heating the lamp tube 201 at the same time, performing heating treatment on the drying temperature in the vacuum barrel, and starting vacuum drying treatment; when the drying temperature in the vacuum barrel is monitored by the temperature measuring probe 14 and reaches the drying temperature set by the experiment, the temperature control switch is switched off, and the heating lamp tube stops heating; when the drying temperature in the vacuum barrel is lower than the drying temperature set in the experiment, the temperature control switch is switched on, and the heating lamp tube is continuously heated to the drying temperature;
and 9, after the vacuum drying treatment is finished, cutting off a power supply, closing the vacuum pump 4 and the heating lamp tube 201, removing the heat insulation layer 19, opening the air inlet valve 902 after the vacuum barrel is kept still and cooled to perform vacuum environment air inlet treatment, opening the barrel cover 3 after the air pressure inside and outside the vacuum barrel is balanced, taking down the memory card on the ultra-clean camera 16, copying the monitored data, then taking out the objective table 2, cleaning a drying agent and a corrosion test piece on the objective table 2, removing the heating lamp tube 201, and preparing to start the next test cycle.

Claims (8)

1. The acid rain erosion-normal temperature drying multi-physical field intelligent regulation test device is characterized by comprising a vacuum barrel, an objective table, a vacuum device, an acid rain erosion device and an intelligent monitoring compensation device; the vacuum barrel comprises a barrel body and a barrel cover, the barrel cover is detachably mounted at the opening end of the barrel body, a vacuum device, an acid-rain corrosion device and an intelligent monitoring compensation device are connected to the barrel cover, and the objective table is placed in an inner cavity of the barrel body.
2. The acid rain etching-normal temperature drying multi-physics field intelligent regulation and control test device of claim 1, characterized in that: the vacuum device comprises a vacuum pump, a vacuum meter, an air suction valve and an air inlet valve, the vacuum pump is connected with a four-way pipe through a vacuum pumping pipeline, the air suction valve and the air inlet valve are installed on a horizontal pipe of the four-way pipe, the air suction valve is close to one end of the vacuum pump, the vacuum meter is installed at the top end of a vertical pipe of the four-way pipe, and the bottom end of the vertical pipe of the four-way pipe is installed on a barrel cover and communicated with an inner cavity of the barrel body.
3. The acid rain etching-normal temperature drying multi-physics field intelligent regulation and control test device of claim 1, characterized in that: the outer side of the barrel body is wrapped with a heat insulation layer.
4. The acid rain etching-normal temperature drying multi-physics field intelligent regulation and control test device of claim 1, characterized in that: the acid rain spray corrosion device comprises a circulating water pump, a water circulating water outlet valve, a water circulating water injection valve and a shower tray, wherein the shower tray is installed in the center of the lower surface of a barrel cover, the water circulating water outlet valve and the water circulating water injection valve are installed on the barrel cover of the vacuum barrel and communicated with the inner cavity of the barrel body, the circulating water pump is connected with one end of the water circulating water outlet valve through a water inlet of the circulating water pump on the circulating water pump, the other end of the water circulating water outlet valve is located on the inner side of the barrel cover and connected with a water pipe extending into a solution, the circulating water pump is connected with the water circulating water injection valve through a water outlet of the circulating water pump on the circulating water pump, a flowmeter is installed between a water outlet of the circulating water pump and the water circulating water injection valve, the flowmeter is arranged close to one end of the water outlet of the circulating water pump, and the water circulating water injection valve is connected with the shower tray through a water pipe inside the barrel body.
5. The acid rain etching-normal temperature drying multi-physics field intelligent regulation and control test device of claim 1, characterized in that: the object stage comprises a plurality of tables and a plurality of supporting columns, the tables are arranged in parallel at equal intervals, adjacent tables are fixedly connected through the supporting columns, the supporting columns are also arranged at four corners of the lower surface of the lowest table, and heating lamp tubes are arranged at equal intervals on the lower surfaces of the tables.
6. The acid rain etching-normal temperature drying multi-physics field intelligent regulation and control test device of claim 1, characterized in that: the intelligent monitoring compensation device comprises a micro-solution injection pump, a solution compensation injection valve, a data acquisition controller, an ion concentration meter, a wire arranging hole, a temperature control switch, an ultra-clear camera and a constant temperature solution heater, wherein the liquid outlet end of the micro-solution injection pump is connected with the solution compensation injection valve which is arranged on the barrel cover and extends into the barrel body, the ion concentration meter is arranged on the barrel cover, a testing electrode on the ion concentration meter extends into the barrel body, a base with the wire arranging hole is fixedly arranged on a through hole of the barrel cover, the temperature control switch is positioned on the outer side of the barrel cover, a temperature measuring probe on the temperature control switch penetrates through the wire arranging hole and extends into the barrel body, the ultra-clear camera and the constant temperature solution heater are both arranged on the lower surface of the barrel cover, the ion concentration meter is connected with the input end of the data acquisition controller, and the output end of the data acquisition controller is connected with the micro-solution injection pump; the temperature control switch is connected with a plug of an aviation socket arranged at the position of the electrifying port, the aviation socket is connected with the heating lamp tube on the objective table, and the heating lamp tube is controlled to be opened and closed through the temperature control switch.
7. The acid rain etching-normal temperature drying multi-physics field intelligent regulation and control test device of claim 1, characterized in that: the micro-solution injection pump comprises a horizontal plate, a vertical plate, an injector mounting plate, a push plate, a guide rail, a threaded rod and a motor, a vertical plate is arranged at one end of the upper surface of the horizontal plate, two injector mounting plates which are arranged in parallel are arranged at the other end of the upper surface of the horizontal plate, an injector mounting groove is arranged on the upper surface of each injector mounting plate, the injectors are mounted in the injector mounting grooves, the injector mounting plate positioned on the inner side is connected with the vertical plate through two guide rails, a motor is fixedly mounted on the outer side surface of each vertical plate, the tail end of an output shaft of the motor penetrates through a through hole in the vertical plate and is connected with one end of a threaded rod through a coupler, the other end of the threaded rod is connected with the injector mounting plate positioned on the inner side, and the guide rail and the threaded rod are provided with push plates, and the push plates move along the threaded rod and the guide rail under the rotating action of the threaded rod and are used for pushing a push rod of the injector to complete the propelling action.
8. The use method of the acid rain etching-normal temperature drying multi-physical-field intelligent regulation test device according to claim 1 is characterized by comprising the following steps:
step 1, before a leaching test is started, selecting the number of layers of a table plate and the height of a support column according to the number of test pieces subjected to primary leaching in a test scheme, uniformly placing the test pieces to be leached on an object stage without a heating lamp tube, ensuring a certain gap to be reserved between the leaching test pieces when the test pieces are placed so as to ensure a leaching effect, placing the object stage with the placed test pieces in a vacuum barrel and at the center of the barrel bottom after the test pieces are placed, and sleeving a heat insulation layer on the outer side of the vacuum barrel;
step 2, after the object stage is placed, slowly adding a test solution prepared in advance into the barrel along the inner wall of the barrel, wherein the liquid level of the test solution in the vacuum barrel is required to be below the lower surface of the lowest layer of the leaching test piece during a leaching experiment;
step 3, sequentially mounting the constant-temperature solution heater, the shower tray and the ultra-clear camera on a barrel cover, aligning the barrel cover to the opening of the barrel body after all components are arranged, ensuring that the heating section of the constant-temperature solution heater is completely immersed in the test solution when the barrel cover is mounted, and also placing the test electrode of the ion concentration meter in the test solution; selecting vacuum environment etching or non-vacuum environment etching according to specific test requirements;
step 4, connecting the outside of a water circulation water outlet valve on the barrel cover of the vacuum barrel to a water inlet of a circulating water pump on the circulating water pump through a water pipe, and connecting the inside of the water circulation water outlet valve to the position below the liquid level in the barrel through a water pipe; the water outlet of a circulating water pump of the circulating water pump is connected with a flowmeter and then is connected with a water circulating water injection valve on the barrel cover of the vacuum barrel, and the inside of the water circulating water injection valve is connected with a shower tray to form water circulation; connecting a solution compensation liquid injection valve with an injector outlet on a micro-solution injection pump; then connecting the ion concentration meter and the micro-solution injection pump to a data acquisition controller;
step 5, switching on a power supply, heating the test solution through a constant-temperature solution heater, simultaneously opening an air extraction valve, and vacuumizing a vacuum barrel through a vacuum pump; starting an ultra-clear camera to monitor the whole test process, and starting a circulating water pump to start a leaching experiment after the preset test temperature and vacuum degree are reached;
step 6, after the leaching experiment is finished, cutting off a power supply, opening an air inlet valve of a vacuum meter, performing air inlet treatment in a vacuum environment, opening a barrel cover to remove a constant-temperature solution heater after the air pressure inside and outside a vacuum barrel is balanced, drawing a test electrode of an ion concentration meter below the barrel cover, and copying the monitoring data inside the ultra-clear camera; taking the objective table with the leaching test piece out of the vacuum barrel, pouring the test solution out of the vacuum barrel, and cleaning to finish the leaching test;
step 7, before a vacuum drying experiment, mounting heating lamp tubes on the lower surfaces of a plurality of tables on an objective table, firstly laying a layer of drying agent on the bottom of a vacuum barrel and the tables of the objective table, then uniformly arranging the drenched test piece on the tables of the objective table, and when the drenched test piece is placed, ensuring a space between the test piece and the test piece so as to avoid influencing the drying effect; placing the objective table with the well placed corrosion test piece at the center of the vacuum barrel, connecting a power line of the heating lamp tube to an aviation socket at a power-on port, and connecting a plug of the aviation socket to a temperature control switch; finally, the temperature control switch probe is arranged in a gap between the objective table and the vacuum barrel and is positioned in the middle of the vacuum barrel;
step 8, switching on a power supply, opening an air extraction valve, starting a vacuum pump to perform vacuum pumping treatment, heating a lamp tube at the same time, performing heating treatment on the drying temperature in the vacuum barrel, and starting vacuum drying treatment;
and 9, after the vacuum drying treatment is finished, cutting off a power supply, closing the vacuum pump and the heating lamp tube, removing the heat insulation layer, opening an air inlet valve after the vacuum barrel is kept stand and cooled to perform vacuum environment air inlet treatment, opening a barrel cover after the air pressure inside and outside the vacuum barrel is balanced, copying the monitoring data inside the ultra-clean camera, then taking out the objective table, cleaning a drying agent and a leaching test piece on the objective table, removing the heating lamp tube, and preparing to start the next test cycle.
CN202210071089.5A 2022-01-21 2022-01-21 Acid-rain-corrosion-normal-temperature drying multi-physical-field intelligent regulation test device and method Pending CN114397240A (en)

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