Gasification furnace annular cavity ash removal device and method

Abstract

The invention relates to the technical field of coal gasification, in particular to a gasifier annular cavity ash removal device and method. According to the technical scheme, the ash removal device for the annular cavity of the gasification furnace comprises a supporting support, an adjusting mechanism, a dust collection mechanism, a control mechanism, a movable supporting mechanism and an ash removal executing mechanism, the adjusting mechanism is arranged on the top face of the supporting support, the dust collection mechanism is arranged on the inner side of the adjusting mechanism, and the control mechanism is arranged on the surface of the supporting support. A movable supporting mechanism is arranged on the bottom face of the supporting bracket, and a dust removal executing mechanism is arranged on one side of the dust collection mechanism. By integrating the automatic control system and the movable supporting module, unmanned intervention of ash removal operation is achieved, manual carrying or entering the furnace for operation is not needed, the continuous operation capacity is remarkably improved, the requirement for large-scale continuous production is met, and the requirement for high efficiency and safety of the modern coal chemical industry is met.

Description

Technical Field

[0001] The present invention relates to the technical field of coal gasification, and in particular to a gasifier annular cavity ash cleaning device and method. Background Art

[0002] At present, in the field of coal gasification technology, the cleaning of the annular cavity of the gasifier faces many problems. The traditional cleaning method usually adopts manual regular shutdown and cleaning. This method not only leads to a significant decline in production efficiency, but also poses safety hazards such as high temperature, hypoxia, and harmful gas leakage when manual work is carried out inside the gasifier. For example, in the production practice of a large coal chemical enterprise, the gasifier adopts manual cleaning. The production time loss due to shutdown and cleaning each year accounts for about 15% of the total production time. At the same time, many minor poisoning accidents have occurred during the manual cleaning process.

[0003] The existing gasification furnace annular cavity cleaning device relies on manual shutdown operations at regular intervals, which requires interrupting the production process for internal cleaning. Operators are exposed to harsh environments such as high temperature, lack of oxygen, and harmful gases. The high concentration of dust in the confined space poses a serious occupational health threat to the cleaning personnel.

[0004] The existing gasification furnace annular cavity cleaning device relies on manual shutdown operations at regular intervals, which requires interrupting the production process for internal cleaning. Operators are exposed to harsh environments such as high temperature, hypoxia, and harmful gases. The high concentration of dust in a small space poses a serious occupational health threat to the cleaning personnel. This solution realizes unmanned intervention in the cleaning operation by integrating the automatic control system and the mobile support module. The PLC controller can automatically adjust the drive motor speed, dust suction fan power and backblowing cycle. The operator only needs to set the parameters through the control panel to start the whole process operation. The combination of directional wheels and universal wheels of the mobile support module allows the equipment to autonomously locate to the maintenance port and accurately adjust the cleaning path. There is no need for manual handling or entering the furnace for operation. The continuous operation capacity is significantly improved, which adapts to the needs of large-scale continuous production and meets the requirements of efficiency and safety of the modern coal chemical industry. Summary of the Invention

[0005] In order to overcome the existing gasification furnace annular cavity cleaning device, which relies on manual shutdown operations at regular intervals, the production process needs to be interrupted for internal cleaning. Operators need to be exposed to harsh environments such as high temperature, lack of oxygen, and harmful gases. The high concentration of dust in a small space poses a serious occupational health threat to the cleaning personnel.

[0006] The technical solution of the present invention is: a gasification furnace annular cavity cleaning device, including a supporting bracket, an adjusting mechanism, a dust suction mechanism, a control mechanism, a movable supporting mechanism and a cleaning actuator. The top surface of the supporting bracket is provided with an adjusting mechanism, the inner side of the adjusting mechanism is provided with a dust suction mechanism, the surface of the supporting bracket is provided with a control mechanism, the bottom surface of the supporting bracket is provided with a movable supporting mechanism, and one side of the dust suction mechanism is provided with a cleaning actuator.

[0007] Preferably, the equipment to be installed is supported and installed by a supporting bracket, the dust collection mechanism is adjusted and fixed by an adjusting mechanism, the sucked dust is cleaned and collected by the dust collection mechanism, the actuators of various parts of the equipment are controlled by a control mechanism, the overall movement of the equipment is facilitated by a mobile supporting mechanism, and the dust inside the annular cavity of the vaporization furnace is cleaned by a cleaning actuator.

[0008] Preferably, a gasification furnace annular cavity ash cleaning device further comprises the following modules: Dust cleaning execution module: used to drive the explosion-proof motor to drive the dust cleaning brush head to rotate, directly removing the dust accumulated on the inner wall of the ring cavity; Dust collection system module: used for efficient dust collection and clean discharge through the triple mechanism of negative pressure suction, graded filtration, and dust collection and discharge; Mobile support module: Used to achieve precise displacement and stable operation of the device in a small space through the triple design of directional movement, flexible steering, and overall load-bearing; Control system module: used to realize equipment start and stop control and operation status monitoring through the triple functions of power management, intelligent control, and safety interlock; Dust cleaning module: It is used to realize rapid dust cleaning and efficient filter element maintenance through the triple design of dust collection bucket operation, filter element maintenance and mobile assistance; Safety protection module: used to ensure the safety of equipment operation and operators through triple protection of electrical safety, mechanical safety, and environmental safety.

[0009] Preferably, the dust cleaning execution module includes: A11: Rotating cleaning unit, including a cleaning brush head, a rotating shaft and a driving explosion-proof motor, is used to drive the brush head to rotate through the motor, directly contacting the inner wall of the ring cavity to remove dust accumulation; A12: Protection and fixing unit, including the guard, stabilizing link and guard cover assembly, is used to ensure the sealing of the guard and the stable installation of the motor, ensuring the safety and reliability of the cleaning process; A13: Noise reduction and stabilization unit, including motor mounting base, silencer assembly and bearing assembly, is used to reduce motor operating noise and reduce the impact of mechanical vibration on cleaning accuracy.

[0010] Preferably, the dust collection system module includes: A21: Dust suction unit, including the dust collection pipe interface, air inlet connection hose and dust collection cover elbow, is used to form a negative pressure channel to efficiently guide the cleaned dust into the dust collection system; A22: Grading filtration unit, including cyclone separator, filter barrel and filter fixing cover, is used to achieve graded collection of dust through the dual mechanism of cyclone separation and filter filtration; A23: Dust collection and discharge unit, including dust collection bucket, dust suction fan and fan guard, is used to centrally store filtered dust and ensure that the discharged air meets environmental protection requirements.

[0011] Preferably, the dust collection system module comprises the following steps when working: S11: Push the device to the annular cavity inspection port by moving the handle, and adjust the directional wheel and universal wheel so that the suction pipe interface is aligned with the dust cleaning area; S12: Set the power, suction force and air volume of the dust collector on the control box operation panel; S13: Connect the industrial socket power supply and start the dust suction fan to form a negative pressure environment in the dust suction pipe; S14: The dust that is swept away enters the inlet of the cyclone separator through the dust suction pipe interface and the air inlet hose; S15: The cyclone separator uses centrifugal force to deposit large dust particles ≥5μm into the dust collection bucket; S16: The unsettled fine powder enters the filter barrel with the air flow, is intercepted by the polyester fiber filter element, and is discharged into clean air; S17: Use the backflush handle to perform pulse backflush every 30 minutes to remove dust on the filter surface; S18: When the dust bucket capacity reaches 80%, operate the pressing handle to unlock and pull out the dust bucket; S19: After the dust cleaning is completed, the PLC controller automatically delays 30 seconds to shut down the fan to ensure that the residual dust in the pipeline is completely settled.

[0012] Preferably, the mobile support module includes: A31: Directional movement unit, including mobile directional wheels, load-bearing frame connection seat and wheel axle assembly, is used to achieve linear movement of the device along the preset path to ensure accurate cleaning trajectory; A32: Flexible steering unit, including movable universal wheels, universal wheel brackets and steering bearings, is used to adapt to the needs of working in confined spaces and complete multi-directional angle adjustment; A33: The overall load-bearing unit, including the vacuum cleaner load-bearing frame, mobile handle and reinforcement rib assembly, is used as the structural foundation to carry all functional components and ensure the overall stability of the device.

[0013] Preferably, the control system module includes: A41: Power management unit, including industrial socket, power cord and emergency stop switch, is used to provide stable power supply and realize electrical control of equipment start and stop; A42: Intelligent control unit, including PLC controller, operation panel and parameter display screen, is used to automatically adjust operating parameters through PLC to complete the whole process control of dust cleaning operation; A43: Safety interlock unit, including motor overload protector, fan fault early warning device and control box protector, is used to monitor the operating status of the equipment and trigger the protection mechanism under abnormal conditions.

[0014] Preferably, the dust cleaning module includes: A51: Dust collection bucket operating unit, including a clamping handle, guide grooves and sealing strips, is used to achieve quick loading and unloading of dust and sealed storage for easy regular cleaning; A52: Filter maintenance unit, including backflush handle, filter cleaning port and filter replacement tool, is used to ensure the continuous filtration capacity of the filter through backflush cleaning and quick replacement mechanism; A53: Mobile auxiliary unit, including dust bucket rollers, fixing clips and cleaning table, is used to improve the efficiency of dust bucket transportation and reduce the intensity of manual operation.

[0015] Preferably, the security protection module includes: A61: Electrical safety unit, including motor grounding wire, leakage protector and insulation monitor, used to prevent leakage and overload, ensuring the safety of operators and equipment; A62: Mechanical safety unit, including guard protection level, mobile mechanism limiter and emergency brake, used to avoid accidental damage to mechanical parts through physical protection and limit design; A63: Environmental safety unit, including dust concentration monitor, ventilation interlock and warning signs, is used to monitor the working environment in real time to ensure that the dust concentration is controlled within the safety threshold.

[0016] A method for cleaning the annular cavity of a gasifier comprises the following steps: S21: Push the device to the gasifier annular cavity inspection port by moving the handle, adjust the movable directional wheels and universal wheels so that the suction pipe interface is aligned with the dust cleaning area, and ensure that the vacuum cleaner load-bearing frame is stably placed on a flat ground; S22: Connect the industrial socket to a 380V three-phase power supply, check the integrity of the power cord insulation layer, and connect the power supply after the operator wears insulating gloves; S23: On the control box operation panel, set the drive motor speed to 200r / min; the dust suction fan power to 6.5kW; the backflush cycle to 30 minutes / time; S24: Check the resistance of the motor ground wire is ≤4Ω; the protection level of the protective cover is IP65; and the dust concentration monitor is calibrated; S25: Press the start button to drive the explosion-proof motor to drive the cleaning brush head to rotate at 200r / min through the rotating shaft, directly contacting the inner wall of the ring cavity to remove the accumulated dust; S26: The PLC controller automatically delays 5 seconds to start the dust collection fan, forming a negative pressure of -45KPa in the dust collection pipe, and guides the cleaned dust into the cyclone separator through the dust collection pipe interface; S27: The cyclone separator settles particles ≥5μm into the dust collection bucket, and the remaining dust is intercepted by the polyester fiber filter and discharged into clean air; S28: The operator pushes the device at a speed of 0.3 m / s and adjusts the path by moving the universal wheel to ensure that the cleaning brush head covers the entire circumferential and axial area of ​​the ring cavity; S29: Every 30 minutes, the pulse valve is triggered by the back-blowing handle, and compressed air is blown back from the inside of the filter element to remove dust on the surface and maintain the filter element pressure difference ≤ 2.5kPa; S210: When the dust bucket weighs 180kg, the operation is to tighten the handle to unlock it, and the dust bucket is moved to the cleaning table by the dust bucket roller, and the spare dust bucket is replaced and reset; S211: After the dust cleaning is completed, the PLC controller automatically executes and the drive motor slows down to 0r / min; the dust suction fan is delayed for 30 seconds to stop; after turning off the power, clean the residual dust on the surface of the equipment and move the device to the designated storage area.

[0017] Beneficial effects of the present invention: 1. The existing gasification furnace annular cavity cleaning device relies on manual shutdowns at regular intervals, requiring the production process to be interrupted for internal cleaning. Operators are exposed to harsh environments such as high temperatures, lack of oxygen, and harmful gases. The high concentration of dust in a confined space poses a serious occupational health threat to the cleaning personnel. This solution integrates an automated control system with a mobile support module to achieve unmanned intervention in the cleaning process. The PLC controller automatically adjusts the drive motor speed, dust suction fan power, and backflush cycle. Operators only need to set parameters on the control panel to start the entire process. The mobile support module's combination of directional wheels and universal wheels allows the equipment to autonomously locate the inspection port and precisely adjust the cleaning path, eliminating the need for manual handling or entering the furnace. This significantly improves the continuous operation capability, adapting to the needs of large-scale continuous production and meeting the efficiency and safety requirements of the modern coal chemical industry. 2. Due to structural limitations, the existing gasifier annular cavity cleaning device makes it difficult for the cleaning brush head or tool to cover the complex curved surface and narrow gaps of the gasifier annular cavity, resulting in the gradual accumulation of dust. The uncleaned areas will cause the equipment to have a decline in operating efficiency or even malfunction, requiring frequent shutdowns for secondary treatment, which in turn increases maintenance costs. This solution uses the collaborative design of the cleaning execution module and the mobile support module. The rotary cleaning unit adopts a flexible cleaning brush head and an adjustable rotating shaft, combined with the noise reduction and stability design of the motor mounting seat to ensure that the brush head fits tightly to the inner wall surface of the annular cavity. The universal wheel and steering bearing combination of the mobile support module allows the equipment to move flexibly in the circumferential and axial directions at a speed of 0.3m / s. Combined with the operator's path adjustment, the brush head can cover the entire area of ​​the annular cavity without dead angles, eliminating the equipment efficiency decline and malfunction risks caused by dust accumulation, and significantly improving the equipment operation stability. 3. The existing gasifier annular cavity cleaning device uses high-pressure water cleaning to remove accumulated dust through water impact, but residual moisture can cause corrosion of metal parts of the equipment, especially in high-temperature environments, accelerating the rust process, seriously affecting production continuity. This solution uses dry mechanical cleaning and a graded dust collection system to replace high-pressure water cleaning. The cleaning execution module drives the brush head by driving an explosion-proof motor to physically remove accumulated dust, preventing moisture from contacting the equipment surface. The dust collection system module uses a cyclone separator and a polyester fiber filter element to achieve efficient dust collection and clean discharge. The cyclone separator can settle large dust particles ≥5μm, and the filter element intercepts fine powder and discharges dry air, completely eliminating residual moisture and ensuring the long-term stable operation of the gasifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a first three-dimensional structural schematic diagram of a gasification furnace annular cavity ash cleaning device of the present invention; Figure 2 Shown is a second three-dimensional structural schematic diagram of a gasification furnace annular cavity ash cleaning device of the present invention; Figure 3 Shown is a schematic diagram of the bottom three-dimensional structure of a gasification furnace annular cavity ash cleaning device of the present invention; Figure 4 Shown is a schematic flow chart of a method for cleaning the annular cavity of a gasifier according to the present invention; Explanation of the accompanying symbols: 1. Support bracket; 2. Adjustment mechanism; 3. Dust suction mechanism; 4. Control mechanism; 5. Mobile support mechanism; 6. Dust cleaning actuator. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] See also Figure 1The present invention provides an embodiment: a gasification furnace annular cavity cleaning device, including a support bracket 1, an adjustment mechanism 2, a dust collection mechanism 3, a control mechanism 4, a movable support mechanism 5 and a dust cleaning actuator 6. The top surface of the support bracket 1 is provided with an adjustment mechanism 2, the inner side of the adjustment mechanism 2 is provided with a dust collection mechanism 3, the surface of the support bracket 1 is provided with a control mechanism 4, the bottom surface of the support bracket 1 is provided with a movable support mechanism 5, and one side of the dust collection mechanism 3 is provided with a dust cleaning actuator 6.

[0021] The equipment to be installed is supported and installed by the support bracket 1, the dust collection mechanism 3 is adjusted and fixed by the adjustment mechanism 2, the sucked dust is cleaned and collected by the dust collection mechanism 3, the actuators of various parts of the equipment are controlled by the control mechanism 4, the overall movement of the equipment is facilitated by the mobile support mechanism 5, and the dust inside the annular cavity of the vaporization furnace is cleaned by the cleaning actuator 6.

[0022] See also Figure 2-3 In this embodiment, a gasification furnace annular cavity ash cleaning device further comprises the following modules: Dust cleaning execution module: used to drive the explosion-proof motor to drive the dust cleaning brush head to rotate, directly removing the dust accumulated on the inner wall of the ring cavity; Dust collection system module: used for efficient dust collection and clean discharge through the triple mechanism of negative pressure suction, graded filtration, and dust collection and discharge; Mobile support module: Used to achieve precise displacement and stable operation of the device in a small space through the triple design of directional movement, flexible steering, and overall load-bearing; Control system module: used to realize equipment start and stop control and operation status monitoring through the triple functions of power management, intelligent control, and safety interlock; Dust cleaning module: It is used to realize rapid dust cleaning and efficient filter element maintenance through the triple design of dust collection bucket operation, filter element maintenance and mobile assistance; Safety protection module: used to ensure the safety of equipment operation and operators through triple protection of electrical safety, mechanical safety, and environmental safety.

[0023] Preferably, the dust cleaning execution module includes: A11: Rotating cleaning unit, including a cleaning brush head, a rotating shaft and a driving explosion-proof motor, is used to drive the brush head to rotate through the motor, directly contacting the inner wall of the ring cavity to remove dust accumulation; A12: Protection and fixing unit, including the guard, stabilizing link and guard cover assembly, is used to ensure the sealing of the guard and the stable installation of the motor, ensuring the safety and reliability of the cleaning process; A13: Noise reduction and stabilization unit, including motor mounting base, silencer assembly and bearing assembly, is used to reduce motor operating noise and reduce the impact of mechanical vibration on cleaning accuracy.

[0024] Preferably, the dust collection system module includes: A21: Dust suction unit, including the dust collection pipe interface, air inlet connection hose and dust collection cover elbow, is used to form a negative pressure channel to efficiently guide the cleaned dust into the dust collection system; A22: Grading filtration unit, including cyclone separator, filter barrel and filter fixing cover, is used to achieve graded collection of dust through the dual mechanism of cyclone separation and filter filtration; A23: Dust collection and discharge unit, including dust collection bucket, dust suction fan and fan guard, is used to centrally store filtered dust and ensure that the discharged air meets environmental protection requirements.

[0025] Preferably, the dust collection system module comprises the following steps when working: S11: Push the device to the annular cavity inspection port by moving the handle, and adjust the directional wheel and universal wheel so that the suction pipe interface is aligned with the dust cleaning area; S12: Set the power, suction force and air volume of the dust collector on the control box operation panel; S13: Connect the industrial socket power supply and start the dust suction fan to form a negative pressure environment in the dust suction pipe; S14: The dust that is swept away enters the inlet of the cyclone separator through the dust suction pipe interface and the air inlet hose; S15: The cyclone separator uses centrifugal force to deposit large dust particles ≥5μm into the dust collection bucket; S16: The unsettled fine powder enters the filter barrel with the air flow, is intercepted by the polyester fiber filter element, and is discharged into clean air; S17: Use the backflush handle to perform pulse backflush every 30 minutes to remove dust on the filter surface; S18: When the dust bucket capacity reaches 80%, operate the pressing handle to unlock and pull out the dust bucket; S19: After the dust cleaning is completed, the PLC controller automatically delays 30 seconds to shut down the fan to ensure that the residual dust in the pipeline is completely settled.

[0026] Preferably, the mobile support module includes: A31: Directional movement unit, including mobile directional wheels, load-bearing frame connection seat and wheel axle assembly, is used to achieve linear movement of the device along the preset path to ensure accurate cleaning trajectory; A32: Flexible steering unit, including movable universal wheels, universal wheel brackets and steering bearings, is used to adapt to the needs of working in confined spaces and complete multi-directional angle adjustment; A33: The overall load-bearing unit, including the vacuum cleaner load-bearing frame, mobile handle and reinforcement rib assembly, is used as the structural foundation to carry all functional components and ensure the overall stability of the device.

[0027] Preferably, the control system module includes: A41: Power management unit, including industrial socket, power cord and emergency stop switch, is used to provide stable power supply and realize electrical control of equipment start and stop; A42: Intelligent control unit, including PLC controller, operation panel and parameter display screen, is used to automatically adjust operating parameters through PLC to complete the whole process control of dust cleaning operation; A43: Safety interlock unit, including motor overload protector, fan fault early warning device and control box protector, is used to monitor the operating status of the equipment and trigger the protection mechanism under abnormal conditions.

[0028] Preferably, the dust cleaning module includes: A51: Dust collection bucket operating unit, including a clamping handle, guide grooves and sealing strips, is used to achieve quick loading and unloading of dust and sealed storage for easy regular cleaning; A52: Filter maintenance unit, including backflush handle, filter cleaning port and filter replacement tool, is used to ensure the continuous filtration capacity of the filter through backflush cleaning and quick replacement mechanism; A53: Mobile auxiliary unit, including dust bucket rollers, fixing clips and cleaning table, is used to improve the dust bucket transfer efficiency and reduce the intensity of manual operation.

[0029] Preferably, the security protection module includes: A61: Electrical safety unit, including motor grounding wire, leakage protector and insulation monitor, used to prevent leakage and overload, ensuring the safety of operators and equipment; A62: Mechanical safety unit, including guard protection level, mobile mechanism limiter and emergency brake, used to avoid accidental damage to mechanical parts through physical protection and limit design; A63: Environmental safety unit, including dust concentration monitor, ventilation interlock and warning signs, is used to monitor the working environment in real time to ensure that the dust concentration is controlled within the safety threshold.

[0030] See also Figure 4 In this embodiment, a method for cleaning the annular cavity of a gasifier includes the following steps: S21: Push the device to the gasifier annular cavity inspection port by moving the handle, adjust the movable directional wheels and universal wheels so that the suction pipe interface is aligned with the dust cleaning area, and ensure that the vacuum cleaner load-bearing frame is stably placed on a flat ground; S22: Connect the industrial socket to a 380V three-phase power supply, check the integrity of the power cord insulation layer, and connect the power supply after the operator wears insulating gloves; S23: On the control box operation panel, set the drive motor speed to 200r / min; the dust suction fan power to 6.5kW; the backflush cycle to 30 minutes / time; S24: Check the resistance of the motor ground wire is ≤4Ω; the protection level of the protective cover is IP65; and the dust concentration monitor is calibrated; S25: Press the start button to drive the explosion-proof motor to drive the cleaning brush head to rotate at 200r / min through the rotating shaft, directly contacting the inner wall of the ring cavity to remove the accumulated dust; S26: The PLC controller automatically delays 5 seconds to start the dust collection fan, forming a negative pressure of -45KPa in the dust collection pipe, and guides the cleaned dust into the cyclone separator through the dust collection pipe interface; S27: The cyclone separator settles particles ≥5μm into the dust collection bucket, and the remaining dust is intercepted by the polyester fiber filter and discharged into clean air; S28: The operator pushes the device at a speed of 0.3 m / s and adjusts the path by moving the universal wheel to ensure that the cleaning brush head covers the entire circumferential and axial area of ​​the ring cavity; S29: Every 30 minutes, the pulse valve is triggered by the back-blowing handle, and compressed air is blown back from the inside of the filter element to remove dust on the surface and maintain the filter element pressure difference ≤ 2.5kPa; S210: When the dust bucket weighs 180kg, the operation is to tighten the handle to unlock it, and the dust bucket is moved to the cleaning table by the dust bucket roller, and the spare dust bucket is replaced and reset; S211: After the dust cleaning is completed, the PLC controller automatically executes and the drive motor slows down to 0r / min; the dust suction fan is delayed for 30 seconds to stop; after turning off the power, clean the residual dust on the surface of the equipment and move the device to the designated storage area.

[0031] Example 1 Implementation background: The annular cavity of a gasification furnace of a chemical enterprise has serious dust accumulation due to long-term operation. The traditional manual dust cleaning method has the following problems: (1) Low efficiency: Manual dust cleaning requires 48 hours of downtime, and the annual dust cleaning cost of a single device is as high as 1.2 million yuan; (2) Equipment damage: The hard brush head causes the wear rate of the inner wall of the annular cavity to reach 0.8mm / year, and the maintenance cost is high; (3) Safety hazards: Excessive dust concentration has caused two cases of occupational diseases, and the risk of environmental protection penalties is high.

[0032] Implementation steps: S31: The operator pushes the device to the annular cavity inspection port by moving the handle, and adjusts the directional wheel and universal wheel so that the suction pipe interface is aligned with the dust cleaning area; S32: Connect to a 380V three-phase power supply and check the insulation integrity of the power cord (insulation resistance ≥ 10MΩ); S33: Set the parameters on the control box operation panel: drive motor speed: 200r / min; dust suction fan power: 6.5kW; backflush cycle: 30 minutes / time; S34: Verify the safety protection module, motor grounding resistance ≤ 4Ω; shield protection level IP65; dust concentration monitor calibration; S35: Press the start button, the PLC controller starts the drive motor and the dust suction fan synchronously, and delays for 5 seconds to ensure the negative pressure is stable; S36: Drive the explosion-proof motor through the rotating shaft to drive the silicone rubber brush head to rotate at 200r / min, directly contacting the inner wall of the ring cavity to remove dust; S37: The operator pushes the device at a speed of 0.3 m / s and adjusts the path using the universal wheel to ensure that the brush head covers the entire circumferential and axial area of ​​the ring cavity (coverage rate ≥ 99%); S38: The cyclone separator settles particles ≥5μm into the dust collection bucket, and the remaining dust is intercepted by a polyester fiber filter (filtration efficiency ≥99.9%) and then discharged; S39: Every 30 minutes, the backflush handle triggers the pulse valve, and compressed air blows the filter element in the reverse direction to maintain the filter element pressure difference ≤ 2.5kPa; S310: When the dust bucket weighs 180kg (80% capacity), the operator presses the handle to unlock it and moves it to the cleaning station via the rollers to replace the spare bucket; S311: After the dust cleaning is completed, the PLC controller automatically executes and the drive motor speed is reduced to 0r / min; the dust collection fan is delayed for 30 seconds to stop; S312: Turn off the power, clean the remaining dust on the surface of the equipment, and move the device to the storage area.

[0033] Data comparison table:

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A gasification furnace annular cavity ash cleaning device; characterized by: The invention comprises a support bracket (1), an adjustment mechanism (2), a dust collection mechanism (3), a control mechanism (4), a movable support mechanism (5) and a dust cleaning actuator (6); the top surface of the support bracket (1) is provided with the adjustment mechanism (2); the inner side of the adjustment mechanism (2) is provided with the dust collection mechanism (3); the surface of the support bracket (1) is provided with the control mechanism (4); the bottom surface of the support bracket (1) is provided with the movable support mechanism (5); and one side of the dust collection mechanism (3) is provided with the dust cleaning actuator (6).

2. The gasification furnace annular cavity ash cleaning device according to claim 1, characterized in that: A gasification furnace annular cavity ash cleaning device also includes the following modules: Dust cleaning execution module: used to drive the explosion-proof motor to drive the dust cleaning brush head to rotate, directly removing the dust accumulated on the inner wall of the ring cavity; Dust collection system module: used for efficient dust collection and clean discharge through the triple mechanism of negative pressure suction, graded filtration, and dust collection and discharge; Mobile support module: Used to achieve precise displacement and stable operation of the device in a small space through the triple design of directional movement, flexible steering, and overall load-bearing; Control system module: used to realize equipment start and stop control and operation status monitoring through the triple functions of power management, intelligent control, and safety interlock; Dust cleaning module: It is used to realize rapid dust cleaning and efficient filter element maintenance through the triple design of dust collection bucket operation, filter element maintenance and mobile assistance; Safety protection module: used to ensure the safety of equipment operation and operators through triple protection of electrical safety, mechanical safety, and environmental safety.

3. The gasification furnace annular cavity ash cleaning device according to claim 2, characterized in that: The dust cleaning execution module includes: A11: Rotating cleaning unit, including a cleaning brush head, a rotating shaft and a driving explosion-proof motor, is used to drive the brush head to rotate through the motor, directly contacting the inner wall of the ring cavity to remove dust accumulation; A12: Protection and fixing unit, including the guard, stabilizing link and guard cover assembly, is used to ensure the sealing of the guard and the stable installation of the motor, ensuring the safety and reliability of the cleaning process; A13: Noise reduction and stabilization unit, including motor mounting base, silencer assembly and bearing assembly, is used to reduce motor operating noise and reduce the impact of mechanical vibration on cleaning accuracy.

4. The gasification furnace annular cavity ash cleaning device according to claim 2, characterized in that: The dust collection system module includes: A21: Dust suction unit, including the dust collection pipe interface, air inlet connection hose and dust collection cover elbow, is used to form a negative pressure channel to efficiently guide the cleaned dust into the dust collection system; A22: Grading filtration unit, including cyclone separator, filter barrel and filter fixing cover, is used to achieve graded collection of dust through the dual mechanism of cyclone separation and filter filtration; A23: Dust collection and discharge unit, including dust collection bucket, dust suction fan and fan guard, is used to centrally store filtered dust and ensure that the discharged air meets environmental protection requirements.

5. The gasification furnace annular cavity ash cleaning device according to claim 4, characterized in that: When the dust collection system module is working, the following steps are included: S11: Push the device to the annular cavity inspection port by moving the handle, and adjust the directional wheel and universal wheel so that the suction pipe interface is aligned with the dust cleaning area; S12: Set the power, suction force and air volume of the dust collector on the control box operation panel; S13: Connect the industrial socket power supply and start the dust suction fan to form a negative pressure environment in the dust suction pipe; S14: The dust that is swept away enters the inlet of the cyclone separator through the dust suction pipe interface and the air inlet hose; S15: The cyclone separator uses centrifugal force to deposit large dust particles ≥5μm into the dust collection bucket; S16: The unsettled fine powder enters the filter barrel with the air flow, is intercepted by the polyester fiber filter element, and is discharged into clean air; S17: Use the backflush handle to perform pulse backflush every 30 minutes to remove dust on the filter surface; S18: When the dust bucket capacity reaches 80%, operate the pressing handle to unlock and pull out the dust bucket; S19: After the dust cleaning is completed, the PLC controller automatically delays 30 seconds to shut down the fan to ensure that the residual dust in the pipeline is completely settled.

6. The gasification furnace annular cavity ash cleaning device according to claim 2, characterized in that: The mobile support module includes: A31: Directional movement unit, including mobile directional wheels, load-bearing frame connection seat and wheel axle assembly, is used to achieve linear movement of the device along the preset path to ensure accurate cleaning trajectory; A32: Flexible steering unit, including movable universal wheels, universal wheel brackets and steering bearings, is used to adapt to the needs of working in confined spaces and complete multi-directional angle adjustment; A33: The overall load-bearing unit, including the vacuum cleaner load-bearing frame, mobile handle and reinforcement rib assembly, is used as the structural foundation to carry all functional components and ensure the overall stability of the device.

7. The gasification furnace annular cavity ash cleaning device according to claim 2, characterized in that: The control system modules include: A41: Power management unit, including industrial socket, power cord and emergency stop switch, is used to provide stable power supply and realize electrical control of equipment start and stop; A42: Intelligent control unit, including PLC controller, operation panel and parameter display screen, is used to automatically adjust operating parameters through PLC to complete the whole process control of dust cleaning operation; A43: Safety interlock unit, including motor overload protector, fan fault early warning device and control box protector, is used to monitor the operating status of the equipment and trigger the protection mechanism under abnormal conditions.

8. The gasification furnace annular cavity ash cleaning device according to claim 2, characterized in that: The dust cleaning module includes: A51: Dust collection bucket operating unit, including a clamping handle, guide grooves and sealing strips, is used to achieve quick loading and unloading of dust and sealed storage for easy regular cleaning; A52: Filter maintenance unit, including backflush handle, filter cleaning port and filter replacement tool, is used to ensure the continuous filtration capacity of the filter through backflush cleaning and quick replacement mechanism; A53: Mobile auxiliary unit, including dust bucket rollers, fixing clips and cleaning table, is used to improve the efficiency of dust bucket transportation and reduce the intensity of manual operation.

9. The gasification furnace annular cavity ash cleaning device according to claim 2, characterized in that: The security protection module includes: A61: Electrical safety unit, including motor grounding wire, leakage protector and insulation monitor, used to prevent leakage and overload, ensuring the safety of operators and equipment; A62: Mechanical safety unit, including guard protection level, mobile mechanism limiter and emergency brake, used to avoid accidental damage to mechanical parts through physical protection and limit design; A63: Environmental safety unit, including dust concentration monitor, ventilation interlock and warning signs, is used to monitor the working environment in real time to ensure that the dust concentration is controlled within the safety threshold.

10. A method for cleaning the annular cavity of a gasifier, comprising the following steps: S21: Push the device to the gasifier annular cavity inspection port by moving the handle, adjust the movable directional wheels and universal wheels so that the suction pipe interface is aligned with the dust cleaning area, and ensure that the vacuum cleaner load-bearing frame is stably placed on a flat ground; S22: Connect the industrial socket to a 380V three-phase power supply, check the integrity of the power cord insulation layer, and connect the power supply after the operator wears insulating gloves; S23: On the control box operation panel, set the drive motor speed to 200r / min; the dust suction fan power to 6.5kW; the backflush cycle to 30 minutes / time; S24: Check the resistance of the motor ground wire is ≤4Ω; the protection level of the protective cover is IP65; and the dust concentration monitor is calibrated; S25: Press the start button to drive the explosion-proof motor to drive the cleaning brush head to rotate at 200r / min through the rotating shaft, directly contacting the inner wall of the ring cavity to remove the accumulated dust; S26: The PLC controller automatically delays 5 seconds to start the dust collection fan, forming a negative pressure of -45KPa in the dust collection pipe, and guides the cleaned dust into the cyclone separator through the dust collection pipe interface; S27: The cyclone separator settles particles ≥5μm into the dust collection bucket, and the remaining dust is intercepted by the polyester fiber filter and discharged into clean air; S28: The operator pushes the device at a speed of 0.3 m / s and adjusts the path by moving the universal wheel to ensure that the cleaning brush head covers the entire circumferential and axial area of ​​the ring cavity; S29: Every 30 minutes, the pulse valve is triggered by the back-blowing handle, and compressed air is blown back from the inside of the filter element to remove dust on the surface and maintain the filter element pressure difference ≤ 2.5kPa; S210: When the dust bucket weighs 180kg, the operation is to tighten the handle to unlock it, and the dust bucket is moved to the cleaning table by the dust bucket roller, and the spare dust bucket is replaced and reset; S211: After the dust cleaning is completed, the PLC controller automatically executes and the drive motor slows down to 0r / min; the dust suction fan is delayed for 30 seconds to stop; after turning off the power, clean the residual dust on the surface of the equipment and move the device to the designated storage area.

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