Electrical control device of slag cooler and control method thereof

Abstract

The invention provides an electrical control device of a slag cooler and a control method thereof, and relates to the technical field of electrical control. The electrical control device of the slag cooler comprises a control cabinet, an electrical control element, a controller, a water cooling circulation device, a negative pressure device and a differential pressure sensor arranged in the control cabinet. According to the slag cooler, negative pressure dust collection and mechanical vibration cleaning mechanisms are integrated, cleaning operation is automatically executed when the filter screen is blocked, the filter screen does not need to be disassembled or shut down for maintenance, the stability of continuous operation of the slag cooler is remarkably improved, and a three-stage temperature regulation and control mechanism of phase change material heat absorption, air cooling forced convection and water cooling circulation is adopted; heat dissipation modes are automatically switched according to the temperature gradient in the cabinet, the defect that a single air cooling mode is easily influenced by environmental dust is overcome, the problem of high energy consumption of a pure water cooling system is avoided, and long-term reliable operation of electrical elements in a high-temperature dust environment is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of electrical control technology, in particular to an electrical control device of a slag cooler and a control method thereof. Background Art

[0002] In current industrial production processes, industries such as power, cement, and metallurgy generate a large amount of high-temperature ash that requires cooling. For example, circulating fluidized bed boiler units in the power industry produce large quantities of high-temperature ash. If this ash cannot be effectively cooled, not only will it waste significant heat energy but it will also pose significant safety risks to nearby personnel and equipment. Therefore, it is necessary to recycle the physical heat of this ash to improve energy efficiency and achieve civilized production. To recover the heat from the ash, most companies use a drum slag cooler.

[0003] The electrical control device of a slag cooler primarily refers to the electrical control cabinet, which houses the various electrical components that control the cooler's operation. In actual use, the heat and heat generated by these components can cause the temperature inside the cooler's electrical control cabinet to gradually rise, thus shortening the service life of the components. This is especially true in the cooler's operating environment, where the temperature rise inside the control cabinet is more pronounced.

[0004] Based on the above problems, the existing technology mainly includes heat dissipation methods such as air circulation and water circulation. Taking air circulation as an example, its principle is to increase the air circulation speed in the electrical control device to accelerate the discharge of hot air in the electrical control device, thereby achieving the purpose of rapid heat dissipation; under this method, cold air needs to be introduced at the same time as the hot air is discharged, and the cold air generally comes from the air in the external environment. There are more suspended particles and dust in the ambient air. If it is introduced directly, these suspended particles and dust will adhere to the electrical components, causing the resistance of the electrical components to increase or even short circuit.

[0005] In the prior art, in order to remove suspended particles and dust in the cold air, a filter or other structure is generally provided at the air inlet to filter the cold air. However, as the use time of the electrical control device increases, the suspended particles and dust attached to the filter gradually increase, which can easily cause the filter to be clogged, thereby affecting the heat dissipation effect. In addition, if a cleaning operation is performed when the filter is clogged, the entire electrical control device needs to be turned on. At this time, in order to ensure safety in use, the entire device needs to be shut down, which is not conducive to the continuous use of the electrical control device. In addition, the existing filter structure also has the problem of being troublesome to disassemble and assemble. For this reason, Chinese Patent Publication No. CN111386016B discloses a heat dissipation device for an electrical control device, including a cabinet and an installation The fan assembly is at the top of the cabinet, and an upper cavity and a lower cavity are formed in the cabinet from top to bottom, and the upper cavity and the lower cavity are respectively provided with independent cabinet doors, and heat dissipation holes are symmetrically opened on both sides of the lower cavity; an air filter assembly is installed in the lower cavity, and the air filter assembly includes a fixed porous bottom plate, a lifting filter screen and a rotating swing assembly arranged in sequence from top to bottom; in the disclosed technology, a movable filter screen and a fixed porous bottom plate are arranged in conjunction: when the filter screen is limited to the highest horizontal point, the filter screen and the porous plate are connected, thereby realizing a rapid heat dissipation operation of the upward flow of air; when the filter screen is limited to the lowest horizontal point, the porous bottom plate is closed, and at the same time, the heat dissipation of the airflow downward and the filter backwashing operation are realized in conjunction with the heat dissipation clip cavity; in summary, the reverse cleaning of the filter screen can be realized without disassembling the filter screen, However, during the backwash maintenance of the above-mentioned filter, the dust is not well handled and is only blown out, resulting in poor maintenance effect. In addition, other existing technologies including the above-mentioned technology still have room for further improvement in the heat dissipation effect inside the control cabinet. Therefore, it is necessary to further improve the electrical control device of the slag cooler and the control method thereof. Summary of the Invention

[0006] In response to the deficiencies in the prior art, the present invention provides an electrical control device and a control method for a slag cooler, which solve the problems in the prior art of the electrical control device and the control method for the slag cooler, such as insufficient cleaning and the need to improve heat dissipation effect.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electrical control device for a slag cooler, comprising a control cabinet, electrical control elements, a controller, a water cooling circulation device, a negative pressure device, and a pressure differential sensor arranged inside the control cabinet, wherein a cabinet door is provided on the front wall of the control cabinet, a heat absorbing plate is provided on the inner rear wall of the control cabinet, a plurality of mounting guide rails are fixedly connected to the front wall of the heat absorbing plate in an upper and lower distribution, control elements are installed inside the control cabinet through the mounting guide rails, four groups of feet for support are provided at the bottom of the control cabinet, a dust shield is fixedly connected to the top of the control cabinet, and a device for dissipating heat inside the control cabinet is provided on the upper wall of the control cabinet and located inside the dust shield. The air-cooling structure for dissipating air is provided, and an opening for air intake is provided at the bottom of the control cabinet. The inner wall of the opening is fixedly connected to a filter rack, and the inner wall of the filter rack is fixedly connected to a filter. The filter is a stainless steel mesh. The left wall of the control cabinet is rotatably connected to a cleaning box, and a dust box for self-cleaning and maintenance of the filter is provided in the cleaning box. The dust box is connected to a negative pressure device, and a translation drive structure for driving the dust box to translate is provided in the cleaning box. The inner left wall and the inner right wall of the control cabinet are both provided with a water cooling structure, and the water cooling structure is connected to a water cooling circulation device. A temperature detection structure for detecting the temperature inside the cabinet is also provided inside the control cabinet.

[0008] Preferably, the heat absorbing plate is composed of a heat absorbing shell and a PCM phase change layer. The heat absorbing shell is made of aluminum alloy. Honeycomb pores are provided inside the heat absorbing shell, and the PCM phase change layer is filled in the honeycomb pores.

[0009] The aluminum alloy honeycomb skeleton expands the heat conduction area. The PCM phase change layer absorbs excess heat energy when the temperature inside the cabinet exceeds the phase change point, suppressing instantaneous temperature peaks in the electrical component installation area and buying response time for the active cooling system.

[0010] Preferably, the air cooling structure is an axial flow fan, an air outlet is provided on the top of the control cabinet, the axial flow fan is fixedly connected to the inner wall of the air outlet, and the axial flow fan is electrically connected to the controller.

[0011] The axial flow fan can adjust the speed in stages, which not only meets the low-energy ventilation needs of daily operations, but also quickly discharges the hot air accumulated inside the control cabinet under high temperature conditions.

[0012] Preferably, the translational drive structure includes a fixed plate, a second electric telescopic rod and a clamping frame, the fixed plate is fixedly connected to the inner wall of the cleaning box, the clamping frame is slidably connected to the lower wall of the fixed plate through two sets of guide rods, the second electric telescopic rod is fixedly connected to the side of the fixed plate away from the clamping frame, the extended shaft end of the second electric telescopic rod passes through the inner wall of the fixed plate and is fixedly connected to the clamping frame, the dust box is fixedly connected to the inner wall of the clamping frame, and a buffer pad is provided between the dust box and the clamping frame.

[0013] The second electric telescopic rod pushes the clamping frame to move horizontally along the guide rod, driving the dust box to sweep back and forth on the bottom surface of the filter. The buffer pad absorbs the mechanical impact generated by the vibration motor to prevent displacement deviation of precision components.

[0014] Preferably, a dust collection chamber is provided on the side of the dust collection box facing the control cabinet, a rubber pad is provided at the mouth of the dust collection chamber, a negative pressure joint is fixedly connected to the side of the dust collection box away from the dust collection chamber, the end of the negative pressure joint away from the dust collection box is connected to the negative pressure device through an air pipe, and a vibration motor is provided on the inner wall of the dust collection box.

[0015] The rubber pad ensures that the dust collection chamber and the bottom surface of the filter are sealed, the vibration motor peels off the attached dust, and the negative pressure device draws the adsorbed matter through the negative pressure joint, realizing the disassembly-free cleaning of the filter.

[0016] Preferably, the cleaning box is rotatably connected to the control cabinet via a rotating seat, and a first electric telescopic rod is fixedly connected between the side of the cleaning box facing the control cabinet and the left wall of the control cabinet. The cleaning box is driven to rotate ninety degrees along the axis of the rotating seat by extending the shaft of the first electric telescopic rod. When the cleaning box is rotated from parallel to the left wall of the control cabinet to perpendicular to the left wall of the control cabinet by the first electric telescopic rod, the upper opening of the dust box abuts against the lower wall of the filter.

[0017] When the pressure difference sensor detects that the filter is clogged, the first electric telescopic rod drives the cleaning box to rotate to the vertical position, so that the dust box is accurately aligned with the working surface at the bottom of the filter, avoiding occupying equipment space under normal conditions.

[0018] Preferably, the water cooling structure includes multiple groups of water-cooling plates, external water inlet joints, and external water joints, multiple groups of the external water inlet joints and external water joints are fixedly connected to the right wall of the control cabinet, multiple groups of the water-cooling plates are respectively fixedly connected to the inner left wall and the inner right wall of the control cabinet, multiple groups of the inner walls of the water-cooling plates are provided with water channels, the lower wall of the water-cooling plate and the two end portions of the water channel are respectively fixedly connected with internal water outlet joints and connecting pipes, the end of the connecting pipe away from the water-cooling plate is fixedly connected with the internal water inlet joint, an electric control valve is provided between the internal water inlet joint and the connecting pipe, multiple groups of the internal water inlet joints are respectively connected to a group of external water inlet joints through pipes, multiple groups of the internal water outlet joints are respectively connected to a group of external water joints through pipes, and multiple groups of the water-cooling plates are fixedly connected to multiple groups of fins on the side facing the center of the control cabinet.

[0019] When the temperature inside the cabinet exceeds the set threshold, the controller opens the electric control valve, the circulating water flows through the water channel to absorb heat, the fins increase the heat exchange area, and the independently controlled multiple groups of water-cooling plates can cool the high-temperature areas in a targeted manner, avoiding high energy consumption of the overall water cooling system.

[0020] Preferably, the temperature detection structure includes multiple groups of temperature sensors, and the inner left wall and the inner right wall of the control cabinet are fixedly connected with multiple groups of fixing brackets, and the multiple groups of temperature sensors are respectively fixedly connected to the inner wall of the control cabinet through a group of fixing brackets.

[0021] Multiple sets of temperature sensors ensure that monitoring points cover key heat-generating areas. Real-time data drives the controller to initiate a multi-stage temperature control strategy that regulates axial fan speed, starts and stops the water cooling system, and absorbs heat from the PCM phase change layer.

[0022] Preferably, air outlet windows are provided on the front, back, left and right sides of the dust shield, and the inner side walls of each group of air outlet windows are fixedly connected to an air outlet net.

[0023] The dust shield forms a physical isolation barrier to prevent external dust from seeping back into the control cabinet through the top opening. At the same time, the air outlet net intercepts large particles of impurities to ensure the cleanliness of the airflow discharged by the axial fan.

[0024] A control method for an electrical control device of a slag cooler, wherein the control method adopts the electrical control device of the slag cooler for control, and the control method comprises the following steps: S1‌, the control cabinet adjusts the slag conveying speed of the slag cooler and the flow rate of the water cooling circulation device through the controller; During routine operation, the axial flow fan runs at 30% speed, drawing in outside air from the bottom of the control cabinet for ventilation and heat dissipation. When the temperature sensor detects that the temperature inside the cabinet is ≥ the threshold value T1, which is 40°C, the axial flow fan increases to full speed. S3: When the temperature inside the control cabinet continues to rise to the threshold value T2 (50°C), the controller opens the electronically controlled valve to inject circulating water into the water channel of the water cooling plate, achieving synergistic heat dissipation through air cooling and water cooling. When the temperature inside the cabinet is ≥ the threshold value T3 (55°C), the PCM phase change layer of the heat absorbing plate starts phase change and absorbs heat, suppressing the temperature rise peak. S5: When the differential pressure sensor detects ΔP ≥ 150 Pa: a) The first electric telescopic rod drives the cleaning box to rotate to a vertical position; b) The second electric telescopic rod drives the dust collection box to move back and forth along the bottom surface of the filter; c) The vibration motor starts high-frequency vibration, while the negative pressure device sucks and absorbs dust; d) After cleaning is completed, the actuator is reset.

[0025] The present invention provides an electrical control device and a control method for a slag cooler, which have the following beneficial effects: Compared with the existing technology, the electrical control device and control method of the slag cooler integrate negative pressure dust suction and mechanical vibration cleaning mechanisms to automatically perform cleaning operations when the filter is clogged, without the need to disassemble the filter or shut down for maintenance. This solves the problem in the existing technology that the equipment needs to be interrupted for filter cleaning, and significantly improves the stability of the continuous operation of the slag cooler.

[0026] Compared with the existing technology, the electrical control device and control method of the slag cooler adopt a three-stage temperature control mechanism of phase change material heat absorption, air-cooled forced convection and water-cooled circulation, and automatically switches the heat dissipation mode according to the temperature gradient in the cabinet. It not only overcomes the defect of the single air cooling method that is easily affected by environmental dust, but also avoids the high energy consumption problem of the pure water cooling system, effectively ensuring the long-term reliable operation of electrical components in high-temperature dust environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a partial schematic diagram of the cleaning box of the present invention when it is in an activated state; Figure 3 This is a schematic diagram of the bottom of the control cabinet of the present invention; Figure 4 This is a schematic diagram of the top of the control cabinet of the present invention; Figure 5 This is a partial cross-sectional view of the internal structure of the control cabinet of the present invention; Figure 6 For the present invention Figure 5 A partial enlarged view of point A in the middle; Figure 7 This is a partial cross-sectional view of the water-cooling plate structure of the present invention; Figure 8 It is a partial cross-sectional view of the internal structure of the heat absorbing plate of the present invention; Figure 9 A partial cross-sectional view of the internal structure of the cleaning box of the present invention; Figure 10 It is a partial cross-sectional view of the connection structure between the clamping frame and the dust collection box of the present invention.

[0028] Among them, 1. control cabinet; 2. cabinet door; 3. base; 4. dust shield; 5. air outlet window; 6. air outlet net; 7. cleaning box; 8. external water inlet connector; 9. external water outlet connector; 10. guide rod; 11. clamping frame; 12. dust collection box; 13. negative pressure connector; 14. first electric telescopic rod; 15. filter rack; 16. filter; 17. axial flow fan; 18. heat absorption plate; 1801. heat absorption shell; 1802. PCM phase change layer; 19. installation guide rail; 20. water cooling plate; 2001. water channel; 21. fin; 22. internal water outlet connector; 23. connecting pipe; 24. electric control valve; 25. internal water inlet connector; 26. fixing frame; 27. temperature sensor; 28. fixing plate; 29. second electric telescopic rod; 30. cushion; 31. vibration motor. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example:

[0031] like Figures 1 to 10 As shown, an embodiment of the present invention provides an electrical control device for a slag cooler, comprising a control cabinet 1, electrical control elements, a controller, a water cooling circulation device, a negative pressure device, and a pressure difference sensor disposed inside the control cabinet 1. A cabinet door 2 is disposed on the front wall of the control cabinet 1. To prevent dust from falling from the top and contaminating the heat dissipation channel, the control cabinet 1 is provided with four sets of supporting feet 3 at the bottom. A dust shield 4 is fixedly connected to the top of the control cabinet 1. Air outlet windows 5 are provided on the front, back, left, and right sides of the dust shield 4. An air outlet net 6 is fixedly connected to the inner wall of each set of air outlet windows 5. The dust shield 4 forms a physical isolation barrier to prevent external dust from seeping back into the control cabinet 1 through the top opening. At the same time, the air outlet net 6 intercepts large particles of impurities to ensure the cleanliness of the air discharged by the axial fan 17. To improve the heat absorption efficiency in the heat accumulation area and slow the temperature rise rate, a heat absorbing plate 18 is installed on the inner rear wall of the control cabinet 1. Multiple sets of mounting rails 19 are fixedly connected to the front wall of the heat absorbing plate 18 in an upper and lower arrangement. Control components are mounted inside the control cabinet 1 via the mounting rails 19. The heat absorbing plate 18 consists of a heat absorbing shell 1801 made of aluminum alloy and filled with honeycomb pores. The aluminum alloy honeycomb frame expands the heat conduction area. The PCM phase change layer 1802 absorbs excess heat energy when the temperature inside the cabinet exceeds the phase change point, suppressing instantaneous temperature peaks in the electrical component installation area and increasing the response time of the active cooling system. To achieve mode switching between low-power basic heat dissipation and high-temperature enhanced heat dissipation, an air cooling structure is provided on the upper wall of the control cabinet 1 and inside the dust shield 4 to dissipate the hot air inside the control cabinet 1. The air cooling structure is an axial flow fan 17. An air outlet is provided on the top of the control cabinet 1. The axial flow fan 17 is fixedly connected to the inner wall of the air outlet and is electrically connected to the controller. The axial fan 17 can adjust the speed in stages, which not only meets the low-energy ventilation requirements of daily operations, but also quickly discharges the hot air accumulated inside the control cabinet 1 under high-temperature conditions; In order to solve the problem of air intake dust blockage and manual cleaning shutdown, an opening for air intake is provided at the bottom of the control cabinet 1. A filter holder 15 is fixedly connected to the inner wall of the opening. A filter screen 16 is fixedly connected to the inner wall of the filter holder 15. The filter screen 16 is a stainless steel mesh. A cleaning box 7 is rotatably connected to the left wall of the control cabinet 1. A dust collection box 12 is provided in the cleaning box 7 for self-cleaning and maintenance of the filter screen 16. The dust collection box 12 is connected to the negative pressure device. A dust collection chamber is provided on the side of the dust collection box 12 facing the control cabinet 1. A rubber pad is provided at the mouth of the dust collection chamber of the dust collection box 12. A negative pressure joint 13 is fixedly connected to the side of the dust collection box 12 away from the dust collection chamber. The end of the negative pressure joint 13 away from the dust collection box 12 is connected to the negative pressure device through an air pipe. A vibration motor 31 is provided on the inner wall of the dust collection box 12. The rubber pad ensures that the dust collection chamber is sealed against the bottom surface of the filter 16. The vibration motor 31 removes the attached dust, and the negative pressure device extracts the adsorbed matter through the negative pressure connector 13, achieving the cleaning of the filter 16 without disassembly. In order to achieve precise positioning and operation avoidance of the cleaning mechanism, the cleaning box 7 is rotatably connected to the control cabinet 1 through a rotating seat. A first electric telescopic rod 14 is fixedly connected between the side of the cleaning box 7 facing the control cabinet 1 and the left wall of the control cabinet 1. The cleaning box 7 is driven to rotate 90 degrees along the axis of the rotating seat by the extension of the shaft of the first electric telescopic rod 14. When the cleaning box 7 rotates from parallel to the left wall of the control cabinet 1 to perpendicular to the left wall of the control cabinet 1 through the first electric telescopic rod 14, the upper opening of the dust box 12 abuts against the lower wall of the filter 16; When the pressure differential sensor detects that the filter 16 is clogged, the first electric telescopic rod 14 drives the cleaning box 7 to rotate to the vertical position, so that the dust box 12 is precisely aligned with the bottom working surface of the filter 16, avoiding occupying equipment space under normal conditions; In order to ensure that the dust box 12 fully covers and cleans the filter 16, a translation drive structure for driving the dust box 12 to translate is provided in the cleaning box 7. The translation drive structure includes a fixed plate 28, a second electric telescopic rod 29 and a clamping frame 11. The fixed plate 28 is fixedly connected to the inner wall of the cleaning box 7. The clamping frame 11 is slidably connected to the lower wall of the fixed plate 28 through two sets of guide rods 10. The second electric telescopic rod 29 is fixedly connected to the side of the fixed plate 28 away from the clamping frame 11. The end of the second electric telescopic rod 29 extends through the inner wall of the fixed plate 28 and is fixedly connected to the clamping frame 11. The dust box 12 is fixedly connected to the inner wall of the clamping frame 11. A buffer pad 30 is provided between the dust box 12 and the clamping frame 11. The second electric telescopic rod 29 pushes the clamping frame 11 to move horizontally along the guide rod 10, driving the dust box 12 to sweep back and forth on the bottom surface of the filter 16; the buffer pad 30 absorbs the mechanical impact generated by the vibration motor 31 to prevent displacement deviation of the precision components; In order to build a partitioned controllable liquid cooling network, the inner left wall and the inner right wall of the control cabinet 1 are both provided with a water cooling structure, which is connected to the water cooling circulation device. The water cooling structure includes multiple groups of water cooling plates 20, external water inlet joints 8, and external water outlet joints 9. Multiple groups of external water inlet joints 8 and external water outlet joints 9 are all fixedly connected to the right wall of the control cabinet 1. Multiple groups of water cooling plates 20 are respectively fixedly connected to the inner left wall and the inner right wall of the control cabinet 1. The inner walls of the multiple groups of water cooling plates 20 are all provided with water channels 2001. The lower wall of the water cooling plate 20 is located at The two ends of the water channel 2001 are respectively fixedly connected to the inner water outlet joint 22 and the connecting pipe 23. The end of the connecting pipe 23 away from the water-cooled plate 20 is fixedly connected to the inner water inlet joint 25. An electric control valve 24 is provided between the inner water inlet joint 25 and the connecting pipe 23. Multiple groups of inner water inlet joints 25 are respectively connected to a group of outer water inlet joints 8 through pipes, and multiple groups of inner water outlet joints 22 are respectively connected to a group of outer water outlet joints 9 through pipes. Multiple groups of fins 21 are fixedly connected to the side of the multiple groups of water-cooled plates 20 facing the center of the control cabinet 1. When the temperature inside the cabinet exceeds a set threshold, the controller opens the electrically controlled valve 24, allowing circulating water to flow through the water channel 2001 to absorb heat, and the fins 21 increase the heat exchange area. Multiple independently controlled groups of water cooling plates 20 can cool high-temperature areas in a targeted manner, avoiding high energy consumption of the entire water cooling system. In order to establish a temperature grading response mechanism, a temperature detection structure for detecting the temperature inside the cabinet is also provided inside the control cabinet 1. The temperature detection structure includes multiple groups of temperature sensors 27. Multiple groups of fixing brackets 26 are fixedly connected to the inner left wall and the inner right wall of the control cabinet 1. The multiple groups of temperature sensors 27 are fixedly connected to the inner wall of the control cabinet 1 through a group of fixing brackets 26 respectively.

[0032] Multiple groups of temperature sensors 27 ensure that the monitoring points cover key heating areas. Real-time data drives the controller to start the multi-stage temperature control strategy of axial fan 17 speed regulation, water cooling system start and stop, and PCM phase change layer 1802 heat absorption.

[0033] A control method for an electrical control device of a slag cooler, wherein the control method adopts the electrical control device of the slag cooler for control, and the control method comprises the following steps: S1‌, control cabinet 1 adjusts the slag conveying speed of the slag cooler and the flow rate of the water cooling circulation device through the controller; During routine operation, the axial flow fan 17 runs at 30% speed, drawing in outside air from the bottom of the control cabinet 1 for ventilation and heat dissipation. When the temperature sensor 27 detects that the temperature inside the cabinet is ≥ the threshold value T1, where T1 is 40°C, the axial flow fan 17 is increased to full speed. S3: When the temperature inside the control cabinet 1 continues to rise to the threshold value T2, which is 50°C, the controller opens the electronically controlled valve 24 to inject circulating water into the water channel 2001 of the water-cooling plate 20, achieving synergistic heat dissipation through air cooling and water cooling. ‌ S4 ‌, when the temperature inside the cabinet is ≥ the threshold value T3, where T3 is 55°C, the PCM phase change layer 1802 of the heat absorption plate 18 starts phase change to absorb heat, suppressing the temperature rise peak; S5: When the differential pressure sensor detects ΔP ≥ 150 Pa: a) The first electric telescopic rod 14 drives the cleaning box 7 to rotate to a vertical position; b) The second electric telescopic rod 29 drives the dust box 12 to move back and forth along the bottom surface of the filter 16; c) The vibration motor 31 starts high-frequency vibration, while the negative pressure device sucks and absorbs the dust; d) After cleaning is completed, the actuator is reset.

[0034] Working principle: The dust shield 4 forms a physical isolation barrier to prevent external dust from seeping back into the control cabinet 1 through the top opening. At the same time, the air outlet net 6 intercepts large particles of impurities to ensure the cleanliness of the airflow discharged by the axial fan 17; the aluminum alloy honeycomb skeleton expands the heat conduction area, and the PCM phase change layer 1802 absorbs excess heat energy when the temperature in the cabinet exceeds the phase change point, suppressing the instantaneous temperature peak in the electrical component installation area, and gaining response time for the active cooling system; the axial fan 17 can adjust the speed in stages, which not only meets the low-energy ventilation needs of daily operations, but also quickly discharges the hot air accumulated in the control cabinet 1 under high temperature conditions; the rubber pad ensures that the dust collection chamber is sealed with the bottom surface of the filter 16, the vibration motor 31 peels off the attached dust, and the negative pressure device draws the adsorbed matter through the negative pressure joint 13 to achieve the cleaning of the filter 16 without disassembly; when the pressure difference sensor detects that the filter 16 is blocked, the first electric telescopic rod 14 The cleaning box 7 is driven to rotate to the vertical position so that the dust box 12 is precisely aligned with the working surface at the bottom of the filter 16 to avoid occupying equipment space under normal conditions; the second electric telescopic rod 29 pushes the clamping frame 11 to move horizontally along the guide rod 10, driving the dust box 12 to sweep back and forth on the bottom of the filter 16; the buffer pad 30 absorbs the mechanical impact generated by the vibration motor 31 to prevent displacement deviation of precision components; when the temperature in the cabinet exceeds the set threshold, the controller opens the electric control valve 24, and the circulating water flows through the water channel 2001 to absorb heat, and the fins 21 increase the heat exchange area; multiple sets of independently controlled water-cooled plates 20 can cool high-temperature areas in a targeted manner to avoid high-energy consumption operation of the overall water cooling system; multiple sets of temperature sensors 27 ensure that the monitoring points cover key heating areas, and real-time data drives the controller to start the multi-stage temperature control strategy of axial fan 17 speed regulation, water cooling system start and stop, and PCM phase change layer 1802 heat absorption.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The electrical control device of the slag cooler is characterized by: The invention comprises a control cabinet (1), an electrical control element, a controller, a water cooling circulation device, a negative pressure device and a pressure difference sensor arranged inside the control cabinet (1); the front wall of the control cabinet (1) is provided with a cabinet door (2); the inner rear wall of the control cabinet (1) is provided with a heat absorbing plate (18); the front wall of the heat absorbing plate (18) is distributed up and down and fixedly connected with a plurality of groups of mounting guide rails (19); the control element is installed inside the control cabinet (1) through the mounting guide rails (19); the bottom of the control cabinet (1) is provided with four groups of supporting feet (3); the top of the control cabinet (1) is fixedly connected with a dust shield (4); the upper wall of the control cabinet (1) and located inside the dust shield (4) are provided with an air cooling structure for dissipating the hot air inside the control cabinet (1); the control cabinet (1) An opening for air intake is provided at the bottom, and a filter frame (15) is fixedly connected to the inner wall of the opening, and a filter screen (16) is fixedly connected to the inner wall of the filter frame (15), and the filter screen (16) is a stainless steel screen. The left wall of the control cabinet (1) is rotatably connected to a cleaning box (7), and a dust collection box (12) for self-cleaning and maintaining the filter screen (16) is provided in the cleaning box (7), and the dust collection box (12) is connected to a negative pressure device. A translation drive structure for driving the dust collection box (12) to translate is provided in the cleaning box (7). The inner left wall and the inner right wall of the control cabinet (1) are both provided with a water cooling structure, and the water cooling structure is connected to a water cooling circulation device. A temperature detection structure for detecting the temperature inside the cabinet is also provided inside the control cabinet (1).

2. The electrical control device for the slag cooler according to claim 1, characterized in that: The heat absorbing plate (18) is composed of a heat absorbing shell (1801) and a PCM phase change layer (1802); the heat absorbing shell (1801) is made of aluminum alloy; honeycomb pores are provided inside the heat absorbing shell (1801); and the PCM phase change layer (1802) is filled in the honeycomb pores.

3. The electrical control device for the slag cooler according to claim 2, characterized in that: The air cooling structure is an axial flow fan (17), an air outlet is provided on the top of the control cabinet (1), the axial flow fan (17) is fixedly connected to the inner wall of the air outlet, and the axial flow fan (17) is electrically connected to the controller.

4. The electrical control device for the slag cooler according to claim 3, characterized in that: The translation drive structure includes a fixed plate (28), a second electric telescopic rod (29) and a clamping frame (11), wherein the fixed plate (28) is fixedly connected to the inner wall of the cleaning box (7), and the clamping frame (11) is slidably connected to the lower wall of the fixed plate (28) through two sets of guide rods (10), the second electric telescopic rod (29) is fixedly connected to the side of the fixed plate (28) away from the clamping frame (11), and the end of the second electric telescopic rod (29) extends through the inner wall of the fixed plate (28) and is fixedly connected to the clamping frame (11), the dust box (12) is fixedly connected to the inner wall of the clamping frame (11), and a buffer pad (30) is provided between the dust box (12) and the clamping frame (11).

5. The electrical control device for the slag cooler according to claim 4, characterized in that: A dust collection chamber is provided on the side of the dust collection box (12) facing the control cabinet (1), a rubber pad is provided at the mouth of the dust collection chamber of the dust collection box (12), a negative pressure joint (13) is fixedly connected to the side of the dust collection box (12) away from the dust collection chamber, an end of the negative pressure joint (13) away from the dust collection box (12) is connected to a negative pressure device via an air pipe, and a vibration motor (31) is provided on the inner wall of the dust collection box (12).

6. The electrical control device for the slag cooler according to claim 5, characterized in that: The cleaning box (7) is rotatably connected to the control cabinet (1) via a rotating seat. A first electric telescopic rod (14) is fixedly connected between the side of the cleaning box (7) facing the control cabinet (1) and the left wall of the control cabinet (1). The cleaning box (7) is driven to rotate ninety degrees along the axis of the rotating seat by the extension of the shaft of the first electric telescopic rod (14). When the cleaning box (7) is rotated from parallel to the left wall of the control cabinet (1) to perpendicular to the left wall of the control cabinet (1) via the first electric telescopic rod (14), the upper opening of the dust collection box (12) abuts against the lower wall of the filter screen (16).

7. The electrical control device for the slag cooler according to claim 6, characterized in that: The water cooling structure comprises a plurality of water cooling plates (20), external water inlet joints (8), and external water outlet joints (9), wherein the plurality of external water inlet joints (8) and external water outlet joints (9) are fixedly connected to the right wall of the control cabinet (1), and the plurality of water cooling plates (20) are respectively fixedly connected to the inner left wall and the inner right wall of the control cabinet (1). The inner walls of the plurality of water cooling plates (20) are provided with water channels (2001), and the lower walls of the water cooling plates (20) and the two end portions of the water channels (2001) are respectively fixedly connected with the inner water outlet joints (22) and the connecting pipes. (23), one end of the connecting pipe (23) away from the water-cooling plate (20) is fixedly connected to an inner water inlet joint (25), an electric control valve (24) is provided between the inner water inlet joint (25) and the connecting pipe (23), multiple groups of the inner water inlet joints (25) are respectively connected to a group of outer water inlet joints (8) through pipes, multiple groups of the inner water outlet joints (22) are respectively connected to a group of outer water outlet joints (9) through pipes, and multiple groups of the water-cooling plates (20) are fixedly connected to a side facing the center of the control cabinet (1) with multiple groups of fins (21).

8. The electrical control device for the slag cooler according to claim 7, characterized in that: The temperature detection structure includes multiple groups of temperature sensors (27), and the inner left wall and the inner right wall of the control cabinet (1) are fixedly connected to multiple groups of fixing frames (26). The multiple groups of temperature sensors (27) are respectively fixedly connected to the inner wall of the control cabinet (1) through a group of fixing frames (26).

9. The electrical control device for a slag cooler according to claim 8, characterized in that: The dust shield (4) is provided with air outlet windows (5) on the front, back, left, and right sides, and the inner side walls of each group of air outlet windows (5) are fixedly connected to an air outlet net (6).

10. A method for controlling an electrical control device of a slag cooler, wherein the method is controlled by using the electrical control device of the slag cooler according to any one of claims 1 to 9, and wherein: The control method comprises the following steps: S1, the control cabinet (1) adjusts the slag conveying speed of the slag cooler and the flow rate of the water cooling circulation device through the controller; S2: During daily operation, the axial flow fan (17) runs at 30% speed, and draws in external air from the bottom of the control cabinet (1) for ventilation and heat dissipation; when the temperature sensor (27) detects that the temperature inside the cabinet is ≥ the threshold value T1, where T1 is 40°C, the axial flow fan (17) is increased to full speed; S3: When the temperature inside the control cabinet (1) continues to rise to the threshold value T2, which is 50°C, the controller opens the electric control valve (24) to inject circulating water into the water channel (2001) of the water cooling plate (20), thereby achieving synergistic heat dissipation by air cooling and water cooling; ‌S4‌, when the temperature inside the cabinet is ≥ the threshold value T3, T3 is 55°C, the PCM phase change layer (1802) of the heat absorption plate (18) starts phase change heat absorption to suppress the temperature rise peak; S5: When the differential pressure sensor detects ΔP ≥ 150 Pa: a) The first electric telescopic rod (14) drives the cleaning box (7) to rotate to a vertical state; b) the second electric telescopic rod (29) drives the dust collection box (12) to move back and forth along the bottom surface of the filter (16); c) The vibration motor (31) starts high-frequency vibration, while the negative pressure device sucks and absorbs the dust; d) After cleaning is completed, the actuator is reset.

Images