CN106841025B - Coating performance detection device for corrosive medium - Google Patents

Abstract

The invention discloses a coating performance testing device for corrosive media, which includes: a closed door I, a closed door II, a box, a power system, a rotating test disk, a lighting system, a rain and mist system, a temperature control system, an intelligent control system, and a quilt. Detect the sample; the power system is placed inside the box, the rotating test disk is connected to the spline shaft of the power system, the tested sample is placed on the rotating test disk, the The lighting system is placed at the top of the inside of the box to implement the aging and fading test of the tested sample. The rain and mist system implements the rain test of the tested sample. The temperature control system is placed at the temperature control center of the box. On the system frame, the airtight door I and the airtight door II are connected to the box; the invention realizes the rain test of the tested sample under different temperature conditions, the rain test of corrosive media, and the aging resistance. The fading resistance test has the advantages of simple structure, complete functions, convenient operation and high automation level.

Description

A coating performance testing device for corrosive media

Technical field

The invention relates to simulating the aging resistance of a coating under strong light irradiation and evaluating the fading resistance of the coating. Specifically, it relates to a coating performance detection device for corrosive media.

Background technique

The vast majority of metal corrosion is caused by electrochemical reactions, which has been recognized by domestic and foreign scholars. Aqueous solutions play an important role in electrochemical corrosion. There are inevitably water films formed by accumulated water, surface condensation and moisture on the surface and components of metal equipment structures, and various impurities are dissolved in them. Therefore, these parts One of the necessary conditions for electrochemical corrosion is met. Based on the analysis of equipment reliability based on environmental properties and comprehensive consideration of various factors affecting metal corrosion, it was determined that the main factors that have a greater impact on the corrosion of coating structures on metal surfaces are: temperature, relative humidity, fog (salt spray), condensation Dew, rain, industrial waste gas pollutants and other parameters, in order to detect the anti-aging and anti-fading performance of the coating materials on the structural surface and components of metal equipment after rain and fog, the present invention provides a coating performance detection device for corrosive media. Rain tests under different temperature conditions, rain tests with corrosive media, and aging and fading resistance tests have the significant advantages of simple structure, complete functions, easy operation, and high automation level.

Contents of the invention

In order to achieve the above-mentioned object of the invention, the present invention discloses a coating performance detection device for corrosive media, which has the significant advantages of simple and compact structure, complete functions, convenient movement and operation, and high automation level.

The technical solutions adopted by the present invention are as follows:

A coating performance testing device for corrosive media, including: airtight door I, airtight door II, box, rain and mist system, power system, rotating test plate, lighting system, temperature control system, intelligent control system, and tested sample ; The power system is placed inside the box, the rotating test plate is connected to the spline shaft of the power system, the tested sample is placed on the rotating test plate, and the lighting system is placed At the top of the interior of the box, the lighting system includes a light source, a filter, and a filter holder; the light source is suspended from the top of the box, and the filter holder is a square with an empty center. The structure is installed in the longitudinal equidistant grooves of the box, and the filter is placed on the filter holder and directly below the light source to achieve filtering of the light source; the rain and mist system includes: a water tank , annular rain rack, water pump, pipeline, rain mist nozzle, flow controller, hydrochloric acid box, waste water recovery device; the water tank is placed on the water tank rack of the box, and the annular rain rack is suspended from the box On the top of the body, the water pump is connected to the annular rain shower rack through the pipeline. The flow controller is installed on the pipeline. The flow controller is adjusted to adjust the intensity of rain mist. The rain mist nozzle is fixed on On the annular rain rack, the hydrochloric acid box is placed on the sample rack of the box, the waste water recovery device is placed on the bottom of the box; the temperature control system is placed on the bottom of the box. On the temperature control system rack, the surface of the temperature control system is coated with an anti-corrosion coating. The airtight door I and the airtight door II are connected to the box. The airtight door I is equipped with tempered glass to facilitate the staff. Observe the test situation. The intelligent control system includes a control panel, a camera, and control system software. The control panel is placed on the airtight door II. The control panel is provided with a controller display screen and a normal temperature protection setter. Light switch, rain and fog switch and operation button, the camera is suspended at the top inside the box, the control system software is placed in the box, and the operation of the test steps is completed by controlling the control panel; the rain and fog system The water tank is made of stainless steel material that has been treated with corrosion resistance. The annular rain shower rack is a circular structure and is hung on the top of the box. There are sixteen rain mist nozzles in groups of four, which are fixed on On the annular rain shower rack, the intelligent control system controls the number of rain mist nozzle switches to adjust the size of the rain mist. The hydrochloric acid box contains corrosive acidic liquid. There is a micro-opening on the top of the hydrochloric acid box. The small holes facilitate the volatilization of acidic liquids, making rain and mist acidic; the wastewater recovery device includes: a wastewater container, a return pipe, a filter, and a water flow control valve. The wastewater container is a square structure and is placed at the bottom of the box. The waste water container is connected to one end of the return water pipeline. A filter and a water flow control valve are installed on the return water pipeline. The other end of the return water pipeline is connected to the water tank. The waste water container and the return water pipeline are connected to the water tank. Made of corrosion-resistant stainless steel.

Further, the box has a square structure, an exhaust fan is provided on the side of the box, and a water tank rack, a sample rack, and a temperature control system rack are provided at the bottom of the box; the water tank rack and sample rack are . The temperature control system frame is made of epoxy resin material, which is both load-bearing and corrosion-resistant; there are square grooves at the bottom four corners of the outside of the box, and rollers are placed in the square grooves to carry out operations on the box. During the test, the rollers are retracted into the square groove to ensure the test stability of the box. When the box needs to be moved for testing, the rollers are opened to realize easy movement of the box. , the box is made of stainless steel plate material, and the outer wall is coated with anti-rust paint. The inner wall of the box is affixed with corrosion-resistant insulation material. The corrosion-resistant insulation material of the inner wall of the box is made of high-density PU foam and glass fiber. cotton; there are longitudinal equidistant grooves inside the box, which are used to adjust the height of the filter from the light source, and at the same time realize the parallel installation of the filter holder, and the tested sample is continuously The exposure time is 168±2 hours, and the temperature control system is adjusted to achieve an environmental temperature of the test chamber of 70-80F and a relative humidity of ≤85% to ensure that the test environment is within a range that meets the requirements.

Further, the power system includes: a cam mechanism, a motor, a coupling, a speed regulator, a hollow shaft, a splined shaft, a bearing, a mounting bracket, and a protective shell. The cam of the cam mechanism is fixedly installed on the motor. At the bottom, the main shaft of the motor is connected to the bottom end of the spline shaft through the coupling. The main shaft of the motor is equipped with a needle roller bearing. The motor is installed on the bracket of the box through connecting bolts. It plays a connecting and guiding role. There is a spline groove on the inside of the hollow shaft. The spline shaft cooperates with the hollow shaft. The hollow shaft is connected with the mounting bracket through a bearing. The top end of the spline shaft is connected to the rotating test disk, the mounting bracket is fixed on the inner wall of the box, the speed regulator is placed on the airtight door II, and the protective shell is installed on the box At the bottom of the interior, the protective shell covers the motor and the cam mechanism, isolates it from the waste water recovery device, and prevents erosion by acid gas or liquid; the cam mechanism includes a worm gear, a worm, a cam motor, and a cam. The cam motor is connected to the worm, the worm cooperates with the worm gear, and the worm gear is coaxially installed with the cam to drive the cam motor to rotate, driving the worm gear to move, thereby realizing the rotation of the cam. The position of the motor is raised and lowered, and the speed of the motor is adjusted by adjusting the speed regulator.

Further, the rotating test plate is made of high-strength steel with a circular turntable structure. The edge of the circular turntable is provided with ribs. The rotating test plate is evenly provided with threaded holes, which can be bolted through during high-speed testing. The tested samples are equidistantly fixed on the rotating test disk, and the rotating test disk rotates at a constant speed driven by the motor of the power system, which not only realizes the test of the moving tested sample but also makes all the tests possible. The tested sample is subject to uniform illumination and rain and fog. The rotation speed of the rotating test disk is continuously adjustable by adjusting the frequency of the motor. The test time, frequency, and rotation speed are displayed on the control panel on the closed door II. .

Further, the light source uses a fluorescent lamp, and the filter uses acrylic plastic sheet plexiglass. The distance from the bottom of the light source to the upper surface of the filter should be 7±0.125 inches, and the distance from the bottom of the light source to the upper surface of the filter should be 7±0.125 inches. The distance between the upper surfaces of the tested sample is 9 ± 0.125 inches, so that the light irradiating on the tested sample is close to natural light, thereby obtaining test results of aging and fading of the tested sample under natural light.

The specific steps of the working method of a coating performance detection device for corrosive media of the present invention are as follows:

When the box is tested, the rollers are retracted into the groove to ensure the stability of the box. When the box needs to be moved for testing, the rollers are opened to move the box to test position, then retract the roller and open the sealed door I of the box; adjust the distance from the bottom of the light source to the upper surface of the filter to be 7±0.125 inches. The distance from the bottom to the upper surface of the sample to be tested is 9 ± 0.125 inches, so that the light shining on the sample to be tested is close to natural light. The sample to be tested is placed on the rotating test disk with the height adjusted. Above; during the rain test, the filter is removed, so that the rain mist sprayed by the rain mist system 3 falls on the tested sample, and the individual control of the rain mist nozzle switch is controlled by the intelligent control system. Count to adjust the size of the rain mist, and the hydrochloric acid box is filled with corrosive acidic liquid. When the acid rain mist test is performed on the tested sample, the micro holes on the top of the hydrochloric acid box are opened to facilitate the volatilization of the acidic liquid. Make the rain and fog acidic; after the rain test, place the filter on the filter holder, turn on the light source through the switch on the control panel, and the intelligent control system adjusts the environment of the entire device Temperature and humidity ensure that the test environment meets the required range, the motor driving the power system drives the rotating test disk to rotate, and the rotation speed of the rotating test disk is adjusted through the speed regulator to drive the cam motor to rotate , drives the worm gear to move, realizes the rotation of the cam, thereby raising and lowering the position of the motor, thereby simulating the aging and fading of the tested sample under strong light after rain, fog or acidic rain and fog.

The beneficial effects of the coating performance detection device for corrosive media of the present invention are:

(1) The coating performance detection device for corrosive media of the present invention evaluates the performance of the coating by simulating the aging and fading of the coating under changing natural light exposure after rain and fog or acidic rain and fog. ;

(2) The coating performance detection device for corrosive media of the present invention has the significant advantages of simple and compact structure, complete functions, convenient operation and high automation level.

Description of the drawings

Figure 1 is a front view of a coating performance detection device for corrosive media according to the present invention;

Figure 2 is a side view of a coating performance detection device for corrosive media according to the present invention;

Figure 3 is a three-dimensional view of a coating performance detection device for corrosive media according to the present invention;

In the picture: 11-closed door I, 12-closed door II, 2-box, 21-water tank rack, 22-sample rack, 23-temperature control system rack, 24-roller, 3-rain and mist system, 31-water tank , 32-annular rain rack, 33-water pump, 34-pipeline, 35-rain mist nozzle, 36-hydrochloric acid box, 37-waste water recovery device, 371-waste water container, 372-return pipe, 373-filter, 374 -Flow control valve, 4-power system, 41-cam mechanism, 411-worm gear, 412-worm, 413-cam motor, 414-cam, 42-motor, 43-coupling, 44-speed regulator, 45- Hollow shaft, 46-spline shaft, 47-bearing, 48-mounting frame, 49-protective shell, 5-rotating test plate, 6-illumination system, 61-light source, 62-filter, 63-filter holder , 7-Temperature control system, 81-Control panel, 82-Camera, 9-Tested sample.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1, 2, and 3, a coating performance testing device for corrosive media of the present invention includes: a closed door I11, a closed door II12, a box 2, a rain and mist system 3, a power system 4, and a rotating test disk 5 , lighting system 6, temperature control system 7, intelligent control system, tested sample 9; the power system 4 is placed inside the box 2, and the spline between the rotating test plate 5 and the power system 4 The detected sample 9 is placed on the rotating test plate 5, and the illumination system (6) is placed at the top of the inside of the box 2. The illumination system 6 includes a light source 61, a filter 62, filter holder 63; the light source 61 is suspended on the top of the box 2, the filter holder 63 is a square structure with an empty middle, and is installed in the longitudinally equidistant recess of the box 2. In the tank, the filter 62 is placed on the filter holder 63 and directly below the light source 61 to filter the light source; the rain and mist system 3 includes: a water tank 31, an annular rain rack 32, and a water pump. 33. Pipeline 34, rain mist nozzle 35, flow controller, hydrochloric acid box 36, waste water recovery device 37; the water tank 31 is placed on the water tank frame 21 of the box 2, and the annular rain shower frame 32 is suspended there. On the top of the box 2, the water pump 33 is connected to the annular rain shower rack 32 through the pipeline 34. The flow controller is installed on the pipeline 34, and the flow controller is adjusted to adjust the amount of rain and mist. Strength, the rain mist nozzle 35 is fixed on the annular rain rack 32, the hydrochloric acid box 36 is placed on the sample rack 22 of the box 2, and the waste water recovery device 37 is placed on the box 2 at the bottom; the temperature control system 7 is placed on the temperature control system frame 23 of the box 2, the surface of the temperature control system 7 is coated with an anti-corrosion coating, the airtight door I11 and the airtight door II12 are The boxes 2 are connected, and tempered glass is installed on the closed door I11 to facilitate the staff to observe the test situation. The intelligent control system includes a control panel 81, a camera 82, and control system software. The control panel 81 is placed on the On the closed door II12, the control panel 81 is provided with a controller display screen, a normal temperature protection setter, a light switch, a rain and fog switch and an operation button. The camera 82 is suspended at the top of the inside of the box 2. The control system software is placed in the box 2, and the operation of the test steps is completed by controlling the control panel 81; the water tank 31 of the rain and mist system 3 is made of corrosion-resistant stainless steel, and the annular rain rack 32 is The annular structure is suspended from the top of the box 2. There are sixteen rain mist nozzles 35 in groups of four, which are respectively fixed on the annular rain rack 32 and controlled by the intelligent control system. The number of switches of the rain mist nozzle 35 is used to adjust the size of the rain mist. The hydrochloric acid box 36 contains corrosive acidic liquid. Micro holes are provided on the top of the hydrochloric acid box 36 to facilitate the volatilization of the acidic liquid, making the rain mist acidic. ; The wastewater recovery device 37 includes: a wastewater container 371, a return pipe 372, a filter 373, and a water flow control valve 374. The wastewater container 371 is a square structure and is placed at the bottom of the box 2. The wastewater container 371 One end of the return pipe 372 is connected to a filter 373 and a water flow control valve 374. The other end of the return pipe 372 is connected to the water tank 31, the waste water container 371 and the water flow control valve 374. The return water pipeline 372 is made of stainless steel material that has been treated with corrosion resistance.

As shown in Figures 1, 2, and 3, the specific steps of the working method of a coating performance detection device for corrosive media of the present invention are as follows:

When the box 2 is tested, the rollers are retracted into the groove to ensure the stability of the box 2. When the box 2 needs to be moved for testing, the rollers are opened to move the box Move the body 2 to the test position, then retract the roller, and open the sealed door 1 of the box 2; adjust the distance from the bottom of the light source 61 to the upper surface of the filter 62 to be 7± 0.125 inches, and the distance from the bottom of the light source 61 to the upper surface of the tested sample 9 is 9±0.125 inches, so that the light irradiating on the tested sample 9 is close to natural light, and the tested sample 9 is placed On the rotating test disk 5 whose height has been adjusted; during the rain test, the filter 62 is removed, so that the rain mist sprayed by the rain mist system 3 falls on the tested sample 9, The intelligent control system controls the number of switches of the rain mist nozzles 35 to adjust the size of the rain mist. The hydrochloric acid box 36 is filled with corrosive acid liquid. When the acid rain mist test is performed on the tested sample 9, Open the microscopic holes on the top of the hydrochloric acid box 36 to facilitate the volatilization of the acidic liquid and make the rain and mist acidic; after the rain test is completed, place the filter 62 on the filter holder 63 and pass through the The switch on the control panel 81 turns on the light source 61, and the intelligent control system adjusts the ambient temperature and humidity of the entire device to ensure that the test environment meets the required range, and drives the motor 42 of the power system 4 to drive the rotating test plate. 5 rotates, and adjusts the rotation speed of the rotating test plate 5 through the rotation speed regulator 44, drives the cam motor 413 to rotate, drives the worm gear to move, realizes the rotation of the cam 414, and thereby realizes the position of the motor 42 Raise and lower, thereby simulating the aging and fading of the tested sample 9 under the changing natural light after rain and fog or acidic rain and fog.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (3)

1. A device for detecting coating properties of a corrosive medium, comprising: the device comprises a closed door I (11), a closed door II (12), a box body (2), a rain and fog system (3), a power system (4), a rotary test disc (5), an illumination system (6), a temperature control system (7), an intelligent control system and a detected sample (9); the power system (4) is arranged in the box body (2), the rotary test disc (5) is connected with a spline shaft of the power system (4), the detected sample (9) is arranged on the rotary test disc (5), the illumination system (6) is arranged at the top end of the inside of the box body (2), and the illumination system (6) comprises a light source (61), an optical filter (62) and an optical filter bracket (63); the light source (61) is hung at the top of the box body (2), the light filter support (63) is of a square structure with an empty middle, the light filter support is arranged in a groove with longitudinal equal distance of the box body (2), and the light filter (62) is arranged on the light filter support (63) and is positioned under the light source (61) to realize the filtration of the light source; the rain and fog system (3) comprises: the device comprises a water tank (31), an annular rain rack (32), a water pump (33), a pipeline (34), a rain and fog spray head (35), a flow controller, a hydrochloric acid box (36) and a wastewater recovery device (37); the water tank (31) is arranged on a water tank frame (21) of the box body (2), the annular rain frame (32) is hung on the top of the box body (2), the water pump (33) is connected with the annular rain frame (32) through the pipeline (34), the flow controller is arranged on the pipeline (34), the flow controller is regulated to regulate the intensity of rain and fog, the rain and fog spray head (35) is fixed on the annular rain frame (32), the hydrochloric acid box (36) is arranged on a sample frame (22) of the box body (2), and the waste water recovery device (37) is arranged at the bottom of the box body (2); the intelligent control system comprises a control panel (81), a camera (82) and control system software, wherein the control panel (81) is arranged on the closed door II (12), a controller display screen, a normal temperature protection setting device, an illumination switch, a rain and fog switch and an operation button are arranged on the control panel (81), the camera (82) is hung on the top end inside the box (2), the control system software is arranged in the box (2), and the control panel (81) is controlled to finish the operation of the test steps; the water tank (31) of the rain and fog system (3) is made of corrosion-resistant stainless steel, the annular rain and fog rack (32) is of a circular structure and is hung at the top of the box body (2), sixteen rain and fog spray heads (35) are respectively fixed on the annular rain and fog rack (32) in groups, the number of the switches of the rain and fog spray heads (35) is controlled by the intelligent control system to adjust the size of rain and fog, the hydrochloric acid box (36) is filled with corrosive acidic liquid, and micro small holes are formed in the top of the hydrochloric acid box (36) to facilitate volatilization of the acidic liquid, so that the rain and fog is acidic; the wastewater recovery device (37) comprises: the waste water treatment device comprises a waste water container (371), a water return pipeline (372), a filter (373) and a water flow control valve (374), wherein the waste water container (371) is of a square structure and is arranged at the bottom of a box body (2), the waste water container (371) is connected with one end of the water return pipeline (372), the filter (373) and the water flow control valve (374) are arranged on the water return pipeline (372), the other end of the water return pipeline (372) is connected with the water tank (31), and the waste water container (371) and the water return pipeline (372) are made of stainless steel materials subjected to corrosion resistance treatment; the power system (4) comprises: the cam mechanism comprises a cam mechanism (41), a motor (42), a shaft coupler (43), a rotating speed regulator (44), a hollow shaft (45), a spline shaft (46), a bearing (47), a mounting frame (48) and a protective shell (49), wherein a cam of the cam mechanism (41) is fixedly arranged at the bottom of the motor (42), a main shaft of the motor (42) is connected with the bottom end of the spline shaft (46) through the shaft coupler (43), a needle bearing is arranged on the main shaft of the motor (42), the motor (42) is arranged on a bracket of a box body (2) through a connecting bolt to play a role in connection and guide, a spline groove is formed in the hollow shaft (45), the spline shaft (46) is matched with the hollow shaft (45), the hollow shaft (45) is connected with the mounting frame (48) through the bearing (47), the top end of the spline shaft (46) is connected with a rotary test disc (5), the mounting frame (48) is fixedly arranged on the inner wall of the box body (2), the rotating speed regulator (II) is arranged on the bracket of the box body (2) to play a role in connection, the spline groove is formed in the hollow shaft (45), the hollow shaft (47) is matched with the hollow shaft (48), the rotating test disc is arranged on the inner wall of the box body (49), the rotating test shaft (49) through the rotating test shaft, isolated from the wastewater recovery device (37) to prevent erosion by acid gases or liquids; the cam mechanism (41) comprises a worm wheel (411), a worm (412), a cam motor (413) and a cam (414), wherein the cam motor (413) is connected with the worm (412), the worm (412) is matched with the worm wheel (411), the worm wheel (411) is coaxially arranged with the cam (414), the cam motor (413) is driven to rotate, the worm wheel and the worm are driven to move, the rotation of the cam (414) is realized, the position of the motor is increased and decreased, and the rotation speed of the motor (42) is adjusted by adjusting the rotation speed regulator (44); the rotary test disc (5) is made of high-strength steel with a round turntable structure, a flange is arranged at the edge of the round turntable, threaded holes are uniformly formed in the rotary test disc (5), a detected sample (9) is fixed on the rotary test disc (5) at equal intervals through bolts in a high-speed test, the rotary test disc (5) is driven by a motor (42) of the power system (4) to rotate at a constant speed, the detected sample (9) is subjected to uniform illumination and rain fog in a motion mode, the rotating speed of the rotary test disc (5) is continuously adjustable through adjusting the frequency of the motor (42), and test time, frequency and rotating speed are displayed on a control panel (81) on the airtight door II (12).

2. The device for detecting the coating performance of the corrosive medium according to claim 1, wherein the box body (2) is of a square structure, an exhaust fan is arranged on the side surface of the box body (2), and a water tank frame (21), a sample frame (22) and a temperature control system frame (23) are arranged at the bottom of the interior of the box body (2); the water tank frame (21), the sample frame (22) and the temperature control system frame (23) are made of epoxy resin materials, so that the water tank frame can bear load and resist corrosion; square grooves are formed in four corners of the bottom of the outside of the box body (2), rollers (24) are arranged in the square grooves, when the box body (2) is tested, the rollers (24) are recovered in the square grooves, test stability of the box body (2) is guaranteed, when the box body (2) needs to move to be tested, the rollers (24) are opened, easy movement of the box body (2) is achieved, the box body (2) is made of stainless steel plate materials, rust-proof paint is coated on the outer wall of the box body, corrosion-resistant heat-insulating materials are adhered to the inner wall of the box body (2), and high-density PU foaming glass fiber cotton is adopted for the corrosion-resistant heat-insulating materials on the inner wall of the box body (2); the inside of the box body (2) is provided with longitudinal equidistant grooves for adjusting the height of the optical filter (62) from the light source (61), and simultaneously realizing parallel installation of the optical filter support (63), the continuous exposure time of the detected sample is 168+/-2 hours, the temperature control system (7) is adjusted to realize that the environmental temperature of the test box is 70-80F, the relative humidity is less than or equal to 85%, and the test environment is ensured to be in a range meeting the requirement.

3. The device for detecting the coating performance of a corrosive medium according to claim 1, wherein the light source (61) is a fluorescent lamp, the optical filter (62) is made of acrylic plastic plate organic glass, the distance from the bottom of the light source (61) to the upper surface of the optical filter (62) is 7+/-0.125 inches, and the distance from the bottom of the light source (61) to the upper surface of the detected sample (9) is 9+/-0.125 inches, so that the light irradiated on the detected sample (9) is close to natural light, and the test result of aging and fading of the detected sample (9) under natural light is obtained.