Automatic testing device for corrosion of oily copper sheet

Abstract

The invention relates to an automatic testing device for corrosion of an oily copper sheet, aiming at solving the problem that the detection efficiency of the existing copper sheet corrosion experiment of turbine oil and transformer oil is relatively low. According to the automatic testing device for corrosion of the oily copper sheet, an oil cup is placed in a box body of a heat preservation box, oil to be detected is contained in the oil cup, a laser temperature measuring sensor is arranged in the heat preservation box to detect the temperature of the oil to be detected in the oil cup, a through hole is formed in the box top of the heat preservation box, and a round pipe cover, an RGB color detector and a lifting mechanism are arranged on the box top of the heat preservation box. The round pipe cover is arranged at a through hole in the top of the heat preservation box, a lifting rack in the lifting mechanism is vertically inserted into a lifting hole of the supporting body, a driving gear is arranged at the power output end of the stepping motor, and the driving gear is meshed with the lifting rack. The oily copper sheet corrosion testing device disclosed by the invention is simple in structure and easy to operate, can ensure automatic test, automatic timing and automatic result output, and improves the experiment precision.

Description

Technical Field

[0001] The invention relates to an automatic testing device for oil copper sheet corrosion, which is mainly used for transformer oil and turbine oil copper sheet corrosion detection experiments. Background Art

[0002] As residents have higher and higher requirements for power supply reliability at this stage, the pressure and responsibility of power generation and power supply systems are becoming greater and greater. As one of the most important devices in the power generation and transmission links, the good operating conditions of turbines and transformers are one of the important guarantees to avoid "unplanned shutdowns". The oil copper sheet corrosion test is an important means to detect the corrosive sulfur produced during the refining and operation of oil products, so as to avoid the corrosive sulfur exceeding the standard and causing serious corrosion of turbines or transformers and causing unplanned shutdowns. At present, the copper sheet corrosion test of turbine oil and transformer oil is too mechanical and still requires manpower to conduct experiments. It is not intelligent and convenient, and cannot meet the requirements of production and life at this stage. Therefore, it is urgent to invent an automatic copper sheet corrosion test device. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of low detection efficiency of existing turbine oil and transformer oil copper sheet corrosion experiments, and to provide an automatic oil copper sheet corrosion testing device.

[0004] The automatic testing device for oily copper sheet corrosion of the present invention comprises an insulation box, a laser temperature sensor, an oil cup, an RGB color detector, a round tube cover and a lifting mechanism. The oil cup is placed in the box body of the insulation box, and the oil cup contains oil to be tested. The laser temperature sensor is arranged in the insulation box to detect the temperature of the oil to be tested in the oil cup, and a through hole is opened on the top of the insulation box.

[0005] The round tube cover, the RGB color detector and the lifting mechanism are arranged on the top of the incubator, the round tube cover is arranged at the through hole of the top of the incubator, a detection hole is opened on the side wall of the round tube cover, and the light beam emitted by the RGB color detector passes through the detection hole;

[0006] The lifting mechanism includes a stepper motor, a driving gear, a lifting rack and a support body. The stepper motor is installed on the support body. A lifting hole is opened on the support body. The lifting rack is vertically inserted into the lifting hole. A driving gear is provided at the power output end of the stepper motor. The driving gear is meshed with the lifting rack. A clamp is provided at the lower end of the lifting rack. The copper sheet sample is fixed to the lower end of the lifting rack by the clamp.

[0007] The automatic testing device for oily copper sheet corrosion of the present invention mainly comprises an insulation box, a stepping motor, a glass oil cup and an RGB color acquisition and detection system (color detector). The testing device can also perform automatic copper sheet corrosion experimental tests through a control panel and a preset program. By setting the time and the thermometer and clamping the ground copper sheet on a fixture, the fully automatic lifting and lowering is achieved to determine the corrosion condition of the copper sheet.

[0008] After the oily copper sheet corrosion test experiment of the present invention begins, the temperature in the heat preservation box begins to rise, and then the temperature is kept constant to a preset temperature. At the same time, the laser temperature detection sensor is started. After detecting that the oil sample reaches the preset temperature and the temperature is stable, the stepper motor drives the copper sheet to descend, and sinks the copper sheet sample into the oil cup to prevent the fixture from contacting the experimental oil. The copper sheet sample is immersed in the experimental oil, and the turbine oil copper sheet corrosion time is 3 hours. After reaching the specified time, the stepper motor moves in the opposite direction and slowly lifts the copper sheet sample again. When the copper sheet sample moves to the circular tube cover, the RGB color detector is started, and the RGB data of the copper sheet color at this time is recorded and transmitted to the console for data comparison and analysis. The uploaded color data is compared with the preset 13 colors to complete the turbine oil copper sheet corrosion test experiment.

[0009] The automatic testing device for oily copper sheet corrosion of the present invention has the following beneficial effects:

[0010] 1. The oily copper sheet corrosion testing device of the present invention has a simple structure and is easy to operate. It can ensure automatic testing, automatic timing, and automatic output of results, thereby reducing interference from human factors during the experimental progress and improving the experimental accuracy.

[0011] 2. The detection accuracy of the present invention is higher than that of manual intuitive observation. The data is extracted by a high-precision detector for detection, which improves the accuracy of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the automatic testing device for oily copper sheet corrosion of the present invention;

[0013] Figure 2 It is a schematic diagram of the top view of the structure inside the support body of the lifting mechanism;

[0014] Figure 3 is a schematic diagram of a control panel;

[0015] Figure 4 This is a color chart for copper corrosion. DETAILED DESCRIPTION

[0016] Specific implementation method 1: The automatic testing device for oily copper sheet corrosion in this implementation method comprises an insulated box 1, a laser temperature sensor 2, an oil cup 3, an RGB color detector 4, a round tube cover 5 and a lifting mechanism. The oil cup 3 is placed in the insulated box 1. The oil cup 3 contains the oil to be tested. The laser temperature sensor 2 is arranged in the insulated box 1 to detect the temperature of the oil to be tested in the oil cup 3. A through hole is opened in the top of the insulated box 1.

[0017] The round tube cover 5, the RGB color detector 4 and the lifting mechanism are arranged on the top of the heat preservation box 1. The round tube cover 5 is arranged at the through hole of the top of the heat preservation box 1. A detection hole is opened on the side wall of the round tube cover 5. The light beam emitted by the RGB color detector 4 passes through the detection hole.

[0018] The lifting mechanism includes a stepper motor 6, a driving gear 7, a lifting rack 8 and a support body 9. The stepper motor 6 is installed on the support body 9. A lifting hole is opened on the support body 9. The lifting rack 8 is vertically inserted into the lifting hole. The power output end of the stepper motor 6 is provided with a driving gear 7. The driving gear 7 is meshed with the lifting rack 8. The lower end of the lifting rack 8 is provided with a clamp 10. The copper sheet sample is fixed to the lower end of the lifting rack 8 by the clamp 10.

[0019] The horizontal size of the fixture in this embodiment is 12.7mm±1mm, and the clamping thickness is 1.5-3mm. Copper sheets that are not within this range should not be clamped on the fixture to ensure that the copper sheets on the fixture meet the test standards. The customized oil cup should have sufficient depth. After the oil is filled in the oil cup, the depth should be 75mm±5mm to ensure that there is enough depth to complete the experiment.

[0020] Specific implementation method 2: This implementation method is different from specific implementation method 1 in that a box door is provided on the front of the thermal insulation box 1 .

[0021] The box door in this embodiment is hinged to the thermal insulation box through hinges.

[0022] Specific implementation method three: This implementation method is different from specific implementation methods one or two in that the width of the copper sheet sample is 12.3-12.8 mm and the thickness is 1.5-3 mm.

[0023] Specific embodiment 4: This embodiment is different from specific embodiments 1 to 3 in that the temperature in the heat preservation box 1 is controlled to be 99-101°C.

[0024] Specific implementation method 5: This implementation method is different from specific implementation methods 1 to 4 in that the copper sheet sample is polished in advance.

[0025] Specific implementation method 6: This implementation method is different from specific implementation methods 1 to 5 in that the oil cup 3 is provided with a capacity scale.

[0026] Specific embodiment 7: This embodiment is different from any one of specific embodiments 1 to 6 in that the support body 9 is fixedly mounted on the bracket 11 .

[0027] Specific implementation example eight: This implementation example is different from specific implementation examples one to seven in that a timer is provided on the incubator 1 .

[0028] Specific embodiment 9: This embodiment is different from specific embodiments 1 to 8 in that an electric heating tube is provided in the heat preservation box 1 .

[0029] Specific embodiment ten: This embodiment is different from specific embodiment nine in that a control panel 12 is further provided on the top of the incubator 1, and the control panel 12 is electrically connected to the electric heating tube, the RGB color detector 4 and the stepping motor 6 respectively.

[0030] Embodiment: The automatic testing device for oily copper sheet corrosion in this embodiment comprises an insulated box 1, a laser temperature sensor 2, an oil cup 3, an RGB color detector 4, a round tube cover 5 and a lifting mechanism. The oil cup 3 is placed in the box body of the insulated box 1, and the oil cup 3 is filled with oil. The laser temperature sensor 2 is arranged in the insulated box 1 to detect the temperature of the oil in the oil cup 3. A through hole is opened in the top of the insulated box 1, and an electric heating pipe is arranged in the insulated box 1.

[0031] The round tube cover 5, the RGB color detector 4 and the lifting mechanism are arranged on the top of the heat preservation box 1. The round tube cover 5 is installed at the through hole of the top of the heat preservation box 1. The side wall of the round tube cover 5 is provided with a detection hole, and the light beam emitted by the RGB color detector 4 passes through the detection hole.

[0032] The lifting mechanism includes a stepper motor 6, a driving gear 7, a lifting rack 8 and a support body 9. The support body 9 is a rectangular parallelepiped. The stepper motor 6 is installed on the support body 9. A lifting (through) hole is opened on the support body 9. The lifting rack 8 is vertically inserted into the lifting hole. The power output end of the stepper motor 6 is provided with a driving gear 7. The driving gear 7 is meshed with the lifting rack 8. The lower end of the lifting rack 8 is provided with a clamp 10. The copper sheet sample is fixed to the lower end of the lifting rack 8 by the clamp 10.

[0033] This embodiment is also provided with a control panel 12, which has a display screen 12-1. The control panel 12 is electrically connected to the heating device in the incubator 1, the RGB color detector 4 and the stepping motor 6, and controls the heating temperature in the incubator and the up and down movement of the lifting rack respectively. The display screen displays the detection result of the RGB color detector. The control panel can also be connected to a printer, and the detection result can be directly printed.

[0034] The process of using the automatic testing device for oily copper sheet corrosion in this embodiment to perform a corrosion test experiment is as follows:

[0035] The copper sheet is first polished with steel wool (cotton), and then treated with 65μm (P220) silicon carbide sandpaper or emery cloth to remove the polishing marks left by other grades of sandpaper. Before the final polishing, it should be ensured that the copper sheet with the surface preparation is no longer oxidized. The metal shavings on the copper sheet can be wiped off with quantitative filter paper, and then the copper sheet is immersed in the washing solvent. The copper sheet can then be taken out and immediately polished, or it can be stored in the washing solvent for future use. The final polishing stage uses 105μm silicon carbide or aluminum oxide grit, which has a larger particle size than 65μm silicon carbide or aluminum oxide, to produce micro-convex bodies (increase roughness) on the surface of the copper sheet as the initial condition for the corrosion reaction.

[0036] Before the experiment begins, inject the experimental oil into the clean oil cup to the scale line. Place the oil cup in the incubator, fix the cleaned standard copper sheet on the lifting rack with a clamp, and close the door of the incubator. Turn on the equipment and set the experimental time and experimental temperature on the control panel. Start the experiment, the clamp will carry the copper sheet to reset, and lift the copper sheet completely. When the copper sheet sample is lifted to the RGB color detector, the RGB color detector is started for the first time, and the copper sheet is now recognized and transmitted in RGB color. The control chip compares the data with the card color. If it meets the "fresh" color, the experiment continues. If not, the experiment stops and reports that the copper sheet needs to be cleaned again. After the test passes, the heating starts, the fan starts, and the gas starts to circulate internally to increase the turbulence to accelerate the temperature rise. The laser temperature sensor is started, and forms a negative feedback regulation system with the temperature probe inside the heating box. Together, they stabilize the heating rate and finally control the temperature stably at the experimental temperature. The temperature detection is mainly based on the laser temperature sensor, supplemented by the probe. This design can better ensure that the temperature is the oil sample temperature rather than the average ambient temperature, and the experimental results are more accurate. When the temperature reaches the preset temperature, the stepper motor starts, the lifting rack descends, and the copper sheet is lowered to the preset position, and the timer starts at the same time. When the preset time is reached, the experiment ends, the stepper motor starts, the lifting rack is raised, and when it is raised to the RGB color detector again, the RGB color detector starts to extract color information. After the RGB color sensor recognizes it, you can refer to the color chart ( Figure 4 )’s standard corrosion color outputs the corrosion color grade to obtain the copper sheet corrosion grade result.

Claims

1. An automatic testing device for oily copper sheet corrosion, characterized in that The oily copper sheet corrosion automatic testing device comprises an insulation box (1), a laser temperature sensor (2), an oil cup (3), an RGB color detector (4), a round tube cover (5) and a lifting mechanism. The oil cup (3) is placed in the box body of the insulation box (1). The oil cup (3) contains oil to be tested. The laser temperature sensor (2) is arranged in the insulation box (1) to detect the temperature of the oil to be tested in the oil cup (3). A through hole is opened on the top of the insulation box (1). The round tube cover (5), the RGB color detector (4) and the lifting mechanism are arranged on the top of the heat preservation box (1); the round tube cover (5) is arranged at the through hole of the top of the heat preservation box (1); a detection hole is opened on the side wall of the round tube cover (5); and the light beam emitted by the RGB color detector (4) passes through the detection hole; The lifting mechanism comprises a stepping motor (6), a driving gear (7), a lifting rack (8) and a support body (9). The stepping motor (6) is mounted on the support body (9). A lifting hole is provided on the support body (9). The lifting rack (8) is vertically inserted into the lifting hole. A driving gear (7) is provided at the power output end of the stepping motor (6). The driving gear 7 is meshed with the lifting rack (8). A clamp (10) is provided at the lower end of the lifting rack (8). The copper sheet sample is fixed to the lower end of the lifting rack (8) by the clamp (10).

2. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that The front of the heat preservation box (1) is provided with a box door.

3. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that The width of the copper sheet sample is 12.3-12.8 mm and the thickness is 1.5-3 mm.

4. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that The temperature in the heat preservation box (1) is controlled to be 99-101°C.

5. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that The copper sheet samples were pre-polished.

6. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that The oil cup (3) is provided with a capacity scale.

7. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that The support body (9) is fixedly mounted on the bracket 11.

8. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that A timer is arranged on the heat preservation box (1).

9. The automatic testing device for oily copper sheet corrosion according to claim 1 is characterized in that An electric heating tube is arranged in the heat preservation box (1).

10. The automatic testing device for oily copper sheet corrosion according to claim 9 is characterized in that A control panel (12) is also provided on the top of the heat preservation box (1), and the control panel (12) is electrically connected to the electric heating tube, the RGB color detector (4) and the stepping motor (6) respectively.

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