CN101716904B - Dry ice cleaning vehicle of electrical equipment external insulation - Google Patents

Abstract

The utility model relates to a dry ice cleaning vehicle for external insulation of electrical equipment, which belongs to cleaning equipment for external insulation of electrical equipment. The car body (8) is fixed with a lift (7), the top of the lift (7) is provided with a lifting platform (3), the lifting platform (3) is provided with an insulating telescopic arm (2), and the telescopic extension of the insulating telescopic arm (2) The dry ice particle automatic track sprinkler assembly (1) is connected to the end, and the dry ice conveying insulating pipe (4-1) on the dry ice delivery device (4) is connected with the sprinkler head (1-8) on the dry ice particle automatic track sprinkler assembly (1) . The structure is compact, the area to be cleaned is large, there is basically no cleaning dead angle, the cleaning area is large at one time, the cleaning quality is high, the operation is convenient, and the decontamination efficiency is high. Especially suitable for cleaning vertically arranged cylindrical insulating equipment such as insulators or bushings. It can be used as an efficient cleaning equipment for safe power production and guaranteed power supply, and has good social and economic benefits.

Description

Dry ice cleaning vehicle for external insulation of electrical equipment

technical field

The invention relates to a cleaning device for external insulation of electrical equipment, in particular to a dry ice cleaning vehicle for external insulation of electrical equipment.

Background technique

Pollution flashover of electrical equipment refers to the fact that the soluble substances of the dirt attached to the insulating surface of electrical equipment gradually dissolve in water under humid conditions, forming a conductive film on the insulating surface, which greatly reduces the insulation level of the insulator. A strong discharge phenomenon occurs. Although there are many existing anti-pollution measures, such as the use of anti-pollution insulators, anti-climbing, and increasing the number of insulators, etc., the insulation of electrical equipment in polluted areas is easily broken down in harsh weather, resulting in pollution flashover accidents , In severe cases, it will affect the safe operation of electrical equipment and bring unnecessary losses to the power system.

With the increasing development of social industrialization, the safe and normal operation of the power system is becoming more and more important. Due to the pollution flashover failure of the power system, it will bring shutdowns, production shutdowns, and even serious accidents to users, causing major economic losses and social impacts. Therefore, anti-pollution flashover of electrical equipment is very important. There are many anti-pollution flashover measures. The traditional method is to clean the power outage in spring and autumn, and use silicone oil, silicone grease and other coatings to increase the creepage ratio of the external insulation. In recent years, there are Use climbing skirts, use PRTV paint, and electrified water flushing, etc. However, this cleaning method is costly, and the operation steps are cumbersome. The mechanical damage and chemical corrosion of the cleaning medium are very serious to the equipment, and have a great impact on the electrical equipment.

Dry ice decontamination technology is to make liquid carbon dioxide into dry ice particles or dry ice cubes through a dry ice machine, and grind them into fine powder, then spray them onto the surface of the object to be cleaned through a jet cleaning device mixed with compressed air, using the impact generated by the high-speed movement of solid dry ice particles Combined with the low temperature of dry ice itself and the thermal expansion caused by sublimation, the scaling, oil stains and residual impurities on the insulating cleaning surface are quickly stripped and removed.

Chinese patent announcement number: CN 2813125Y, public date: September 6, 2006, utility model name "dry ice blasting machine", its structure includes a dry ice supply vehicle and a cleaning spray gun, the ice outlet of the dry ice supply vehicle is connected to the dry ice pipe of the cleaning spray gun , the compressed air pipe is connected to the high-pressure air supply equipment.

Chinese Patent Publication No.: CN101480651A, Publication Date: July 15, 2009, the title of the invention is "Cleaning System for External Insulation of Electrical Equipment", which proposes a dry ice particle nozzle, an insulating adjustable bracket, a dry ice conveying insulating pipeline, a dry ice conveying device, an air The compressor, the air dryer are connected in sequence, the dry ice particle sprinkler, the insulating adjustable bracket, the insulating bracket adjusting tube, and the bracket adjusting power unit are connected in sequence.

Both of the above two technical solutions can realize live online cleaning of electrical equipment, and will not cause electrical safety problems to adjacent electrical equipment. However, in the above-mentioned technical scheme, the movement mode of the cleaning spray gun or the dry ice particle spray head is single, and the degree of freedom is small, and only one side of the external insulator can be cleaned. The method of moving the whole machine to eliminate the dead angle is not only limited by the environmental conditions, the operation is extremely inconvenient, but also the cleaning time is long, the cleaning efficiency is extremely low, and the cleaning quality is difficult to guarantee.

Contents of the invention

The purpose of the present invention is to provide a dry ice cleaning vehicle with external insulation of electrical equipment for the defects and shortcomings of the existing dry ice cleaning device, such as single movement mode, small degree of freedom, large cleaning dead angle, and low cleaning efficiency and quality. Reliable dry ice cleaning vehicle capable of live cleaning of insulating bushings, insulating pillars or overhead transmission line insulators.

In order to achieve the above object, the technical solution of the present invention is: a dry ice cleaning vehicle with external insulation for electrical equipment, including a vehicle body and a dry ice delivery device fixed on the vehicle body, a lift is fixed on the vehicle body, and the top of the lift is set There is a lifting platform, and an insulating telescopic arm is arranged on the lifting platform, and the telescopic end of the insulating telescopic arm is connected with a dry ice particle automatic track sprinkler assembly, and the dry ice conveying insulating pipeline on the dry ice delivery device is connected with the sprinkler on the dry ice particle automatic track sprinkler assembly Pass;

The dry ice particle automatic track sprinkler assembly includes an air motor, a trough bracket, a pressure wheel set, a track bracket, a semi-circular track, and a sprinkler head. The slots of the trough bracket are arranged horizontally, and the outside It is fixedly connected with the telescopic end of the insulating telescopic arm, the air motor is fixed on the outer wall of the groove plate on the groove-shaped bracket through a bolt group, and the rail bracket is fixed on the inner wall of the groove-shaped bracket through the bracket bolt group, and the rail bracket The frame is provided with a pressure roller set corresponding to the semicircular track, and the corresponding semicircular track is provided with a pressure roller on the press wheel set, and the pressure roller is in rolling contact with the rail surface of the semicircular track. The output end of the air motor extends into the inner wall of the upper groove plate of the groove-shaped bracket, and a sprocket or gear is fixed on the output end of the air motor, and a curved plate chain or The arc-shaped rack, the sprocket is meshed with the bent plate chain, or the gear is meshed with the arc-shaped rack.

The spray head is fixed on the output shaft of the swing cylinder, the swing cylinder and the telescopic end of the cylinder are fixed on the cylinder base, the cylinder base is fixed on the front linear guide rail, the front linear guide rail and the front guide rail sliding seat slide and cooperate, and the front guide rail slides The seat and the cylinder seat of the cylinder are fixed on the guide rail base, and the guide rail base is fixed on the rear linear guide rail. The rear linear guide rail is parallel to the front linear guide rail. The rear linear guide rail is slidingly matched with the rear guide rail slide seat. The semi-circumferential rail is fixedly connected, and a row of positioning holes is evenly arranged on the plate body of the guide rail base along the longitudinal direction of the rear linear guide rail. The corresponding positioning holes on the bottom plate are provided with bayonet supports, and the bayonet supports are provided with bayonet pins. , the bayonet pin is connected with the positioning hole plug-in card.

The cross-section of the semi-circumferential track is I-shaped, and at least two sets of pressure rollers are arranged on the rail bottom corresponding to the semi-circumferential track on the track bracket. There are pressure rollers, and each pressure roller is in rolling contact with the upper and lower sides of the rail bottom of the semi-circumferential track respectively, and a curved plate chain is arranged on the arc length direction of the outer wall of the rail waist of the semi-circular track.

The cross-section of the semi-circumferential track is box-shaped, and at least two sets of pressure rollers are arranged on the track bracket corresponding to the semi-circumferential track, and each set of pressure rollers is provided with pressure rollers on the outer walls of the box-shaped four sides corresponding to the semi-circumferential track. , and each pressure roller is in rolling contact with the box-shaped outer wall of the semi-circumferential track, and a curved plate chain is arranged on the arc length direction of the outer wall of the semi-circular track.

The diameter of the central arc of the semi-circumferential track is 800-1500 mm, and the included angle of the central arc is 180°-220°.

The vehicle body is provided with a grounding base.

Described lift adopts scissor lift.

The lifting platform is provided with a telescopic arm rotating platform, and a hydraulic motor is fixed on the lifting platform. There is a gear on the output shaft of the hydraulic motor that meshes with the ring gear on the telescopic arm rotating platform, and the fixed arm fulcrum of the insulating telescopic arm is hinged on the The telescopic arm rotating platform has a cylinder seat of a linear oil cylinder hinged on the telescopic arm rotating platform, and the telescopic end of the linear oil cylinder is hinged on the fixed arm body away from the fulcrum of the insulating telescopic arm.

The beneficial effects of the present invention are:

1. The present invention overcomes the shortcomings and deficiencies in the existing electrical equipment insulation and decontamination technology, fully utilizes the temperature difference effect, large impact force and micro-explosion effect of the dry ice cleaning technology, improves the decontamination efficiency, and the dry ice particles are not abrasive, Dry ice is directly volatilized during the electrification cleaning process, and there is no cost for cleaning the cleaning medium, which avoids the impact of secondary pollution on adjacent electrical equipment. Dry ice blasting does not damage the insulation of the equipment and does not cause mechanical damage. It can be cleaned online, avoiding accidental damage during the disassembly and assembly of the equipment, and greatly prolonging the service life of the insulation of electrical equipment.

2. It can carry out online live cleaning, which saves a lot of power outage time, does not need to increase labor force and other production equipment, and improves cleaning efficiency. Dry ice is a non-toxic substance that meets the national environmental protection and safety requirements. Using dry ice blasting instead of chemical cleaning allows operators to fundamentally avoid the damage of chemical substances. Because the cleaning process of dry ice is different from high-pressure water cleaning, the possibility of rusting of metal parts of equipment after dry ice cleaning is greatly reduced compared with water cleaning, ensuring the safe and normal operation of the power system.

3. The automatic cleaning operation is realized manually on the ground, and sufficient insulation distance can be guaranteed during live cleaning, and the cleaning of the object to be cleaned by the nozzle will not cause insulation performance degradation or short circuit, realizing efficient and safe live work. It is also convenient to realize the whole process of video monitoring during the cleaning process, and the cleaning process has a high degree of automation.

4. The present invention has a compact structure, a large containment area for the object to be cleaned, adjustable cleaning distance and position, high degree of freedom, basically no cleaning dead angle, basically not limited by environmental conditions, large cleaning surface at one time, high cleaning quality, It is easy to operate and has high decontamination efficiency. Especially suitable for cleaning vertically arranged cylindrical equipment such as insulators or bushings. It can be used as an efficient cleaning equipment for safe power production and guaranteed power supply, and has good social and economic benefits.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the dry ice particle automatic track sprinkler assembly 1 in the present invention;

Fig. 3 is the installation diagram of air motor 1-1 in the present invention;

Fig. 4 is a kind of structural representation of semicircle track 1-7 among the present invention;

Fig. 5 is the structural representation of track bracket 1-5 in the present invention;

Fig. 6 is a structural representation of the installation of nozzles 1-8 in the present invention;

Fig. 7 is the left view of Fig. 6;

Fig. 8 is a control electrical principle diagram of the control device 5 on the cleaning vehicle of the present invention.

In the figure: dry ice particle automatic track sprinkler assembly 1, air motor 1-1, trough bracket 1-2, sprocket 1-3, pressure wheel set 1-4, track bracket 1-5, curved plate chain 1-6 , semicircle track 1-7, nozzle 1-8, swing cylinder 1-9, cylinder 1-10, bolt group 1-11, bracket bolt group 1-12, cylinder base 1-13, rail base 1-14, front Linear guide rail 1-15, rear linear guide rail 1-16, front guide rail slide seat 1-17, rear guide rail slide seat 1-18, bottom plate 1-19, positioning hole 1-20, bayonet support 1-21, bayonet 1-22, insulating telescopic arm 2, lifting platform 3, telescopic arm rotating platform 3-1, hydraulic motor 3-2, linear oil cylinder 3-3, dry ice conveying device 4, dry ice conveying insulating pipeline 4-1, control device 5, Grounding base 6, scissor lift 7, car body 8, main switch QS1, combined switches QS2, QS3, QS4, Q55, QS6, QS7, swing cylinder solenoid valve AEV1, cylinder solenoid valve AEV2, air motor solenoid valve AEV3, lifting Taiwan solenoid valve OEV1, insulation arm pitch solenoid valve OEV2, insulation arm rotation solenoid valve OEV3.

Detailed ways

The present invention will be described in further detail below in conjunction with accompanying drawing description and specific embodiment:

Referring to Fig. 1-Fig. 7, the dry ice cleaning vehicle with external insulation of electrical equipment of the present invention comprises a dry ice particle automatic track sprinkler assembly 1, an insulating telescopic arm 2, a lifting platform 3, a dry ice conveying device 4, a control device 5 and a car body 8, The dry ice conveying device 4 is fixed on the car body 8, the dry ice particle automatic track nozzle assembly 1 is installed on the telescopic end of the insulating telescopic arm 2, and the insulating telescopic arm 2 is connected with the lifting platform 3 via the telescopic arm rotating platform 3-1, The telescopic arm rotating platform 3-1 is driven to rotate by the hydraulic motor 3-2. The lifting platform 3 is installed on the upper end of the elevator 7, and the lower end of the elevator 7 is connected with the body 8 of the dry ice cleaning vehicle. The height of the elevator 7 is adjusted by the expansion and contraction of the hydraulic cylinder height, so as to realize the lifting of the lifting platform 3. The dry ice conveying device 4 and the control device 5 are fixed on the car body 8, and the control device 5 controls the dry ice conveying device to convey dry ice particles, and the dry ice particles enter the nozzle of the dry ice particle automatic track nozzle assembly 1 through the dry ice conveying insulating pipeline 4-1 1-8. The car body 8 is fixed with a lift 7, the top of the lift 7 is provided with a lifting platform 3, and the lifting platform 3 is provided with an insulating telescopic arm 2, and the telescopic end of the insulating telescopic arm 2 is connected with a dry ice particle automatic track sprinkler assembly 1, The dry ice conveying insulation pipe 4-1 on the dry ice conveying device 4 communicates with the nozzle 1-8 on the dry ice particle automatic track sprinkler assembly 1: in combination with Figures 2-5, the dry ice particle automatic track sprinkler assembly 1 includes Air motor 1-1, trough bracket 1-2, sprocket 1-3, pressure roller group 1-4, track bracket 1-5, curved plate chain 1-6, semicircle track 1-7, nozzle 1- 8. The notch of the trough bracket 1-2 is arranged horizontally, and the outside of the bottom side of the trough bracket 1-2 is fixedly connected with the telescopic end of the insulating telescopic arm 2. The air motor 1-1 is connected via the bolt group 1 -11 is fixed on the outer wall of the upper groove plate of the grooved bracket 1-2, and the inner wall of the grooved bracket 1-2 is fixed with a track bracket 1-5 through a bracket bolt group 1-12, and the track bracket 1-5 The upper corresponding semi-circumferential track 1-7 is equipped with a pressure roller group 1-4, and the corresponding semi-circular track 1-7 of the upper pressure wheel group 1-4 is equipped with a pressure roller, and the pressure roller rolls with the rail surface of the semi-circular track 1-7. Contact, both ends of the semi-circumferential track 1-7 are equipped with nozzles 1-8, the output end of the air motor 1-1 extends into the inner wall of the groove plate on the groove bracket 1-2, and the air motor 1- The output end of 1 is fixed with a sprocket 1-3, and the arc length direction of the outer wall of the semi-circumferential track 1-7 is provided with a bent plate chain 1-6, and the sprocket 1-3 and the bent plate chain 1- 6 meshed. Bending plate chain 1-6 is to make the chain plate on the side of the standard roller chain into a bent right-angle edge, and there are mounting holes on the right-angle edge, and the bending plate chain 1-6 can be attached and fixed in the semicircle with bolts. On the outer wall of the circumferential track 1-7, and guarantee to drive the semi-circular track 1-7 to rotate together when engaging with the sprocket wheel 1-3. This transmission method can also be changed to a transmission method in which gears and arc-shaped racks are engaged, that is, a gear is fixed at the output end of the air motor 1-1, and arc-shaped teeth are arranged on the arc length direction of the outer wall of the semi-circumferential track 1-7. The bar makes the gear mesh with the arc rack, which can also drive the semicircle track 1-7 to rotate together. However, the processing of curved racks is relatively troublesome, and the requirements for meshing accuracy are relatively high. Each pressure roller group 1-4 presses the semicircle track 1-7 in the groove of the track bracket 1-5, and at the same time lifts the semicircle track 1-7, thus ensuring that the semicircle track 1-7 is in contact with the track There is rolling friction between brackets 1-5.

With reference to Fig. 2, Fig. 6 and Fig. 7, the nozzle 1-8 is fixed on the output shaft of the swing cylinder 1-9, and the swing cylinder 1-9 drives the nozzle 1-8 to complete the pitching motion, and the swing cylinder 1-9 and The telescopic ends of the cylinder 1-10 are all fixed on the cylinder base 1-13, and the cylinder base 1-13 is fixed on the front linear guide rail 1-15, and the front linear guide rail 1-15 is slidingly matched with the front guide rail slide seat 1-17, and the front The guide rail slide 1-17 and the cylinder seat of the cylinder 1-10 are fixed on the guide rail base 1-14, and the telescopic end of the cylinder 1-10 pushes the cylinder base 1-13 and the front linear guide 1-15 on the front guide rail slide 1 Slide back and forth on the -17 to adjust the distance between the nozzles of the nozzles 1-8 and the object to be cleaned. The guide rail base 1-14 is fixed on the rear linear guide rail 1-16, the rear linear guide rail 1-16 is parallel to the front linear guide rail 1-15, the rear linear guide rail 1-16 is slidingly matched with the rear guide rail slide seat 1-18, and the guide rail base 1-14 is fixed on the rear linear guide rail 1-16, and the rear guide rail slide seat 1-18 is fixedly connected with the semi-circumferential rail 1-7 through the bottom plate 1-19, and the board body of the guide rail base 1-14 is along the rear linear guide rail A row of positioning holes 1-20 is evenly arranged in the longitudinal direction of 1-16, and the corresponding positioning holes 1-20 on the bottom plate 1-19 are provided with a bayonet support 1-21, and the bayonet support 1-21 is provided with a bayonet pin 1-22, the bayonet pin 1-22 is connected with the positioning hole 1-20 plug-in card. The sliding position of the rear linear guide rail 1-16 on the rear guide rail slide seat 1-18 determines the radial distance from the guide rail base 1-14 to the center of the semicircle track 1-7, and also determines the swing cylinder 1-9 and cylinder 1- 10 to the radial distance of the center of the semi-circumferential track 1-7, the distance between the nozzle of the nozzle 1-8 and the object to be cleaned can be further adjusted and controlled by inserting the bayonet pin 1-22 and each positioning hole 1-20 respectively. Initial distance, at the same time, the distance between the two nozzles 1-8 can be adjusted and controlled, so as to accommodate external insulation equipment such as insulators from the outside. The swing cylinder 1-9 and the cylinder 1-10 drive the nozzle 1-8 to perform circular, radial and pitch motions, among which the swing cylinder 1-9 drives the nozzle 1-8 to complete the pitch motion, and the cylinder 1-10 drives the nozzle to complete the radial motion. movement, adopting two shower heads 1-8 just can effectively spray the dry ice particle of ejection to any position on the surface of the object to be cleaned like this.

With reference to Fig. 2 and Fig. 4, the cross-section of the semi-circumferential track 1-7 can be I-shaped, and at least two sets of pressure roller groups 1- 4. Each set of pressure rollers 1-4 is provided with pressure rollers corresponding to the upper and lower sides of the semi-circular track 1-7 rail bottom, and each pressure wheel is respectively connected to the upper and lower sides of the semi-circular track 1-7 rail bottom. Rolling contact, the arc length direction of the outer wall of the rail waist of the semi-circular track 1-7 is provided with a bent plate chain 1-6.

The cross-section of the semi-circumferential track 1-7 can also be box-shaped, and at least two sets of pressure rollers 1-4 are arranged on the track bracket 1-5 corresponding to the semi-circumferential track 1-7, each group of pressure rollers 1 On -4, pressure rollers are provided on the four sides of the box-shaped outer walls corresponding to the semi-circumferential track 1-7, and each press wheel is in rolling contact with the box-shaped outer walls of the semi-circular track 1-7 respectively, and the outer walls of the semi-circular track 1-7 Bending plate chains 1-6 are arranged on the arc length direction.

The semi-circular track 1-7 is a semi-circular opening structure, the diameter of the central arc of the semi-circular track 1-7 is 800-1500 mm, and the included angle of the central arc is 180°-220°. Insulators and bushings of various diameters can be cleaned.

Lifting platform 3 bottoms are fixedly installed lifter 7, and the bottom of lifter 7 is fixed on movable car body 8, and lifter 7 described in Fig. 1 adopts scissor lifter. The use of the scissor lift 7 can ensure the operational stability and flexibility of the lifting platform within the lifting range, and its vertical lifting height range is 2-10 meters. But lift 7 also can adopt the lift of other forms. The telescopic arm rotating platform 3-1 is arranged on the described lifting platform 3, and the hydraulic motor 3-2 is fixed on the lifting platform 3, and there are gears on the output shaft of the hydraulic motor 3-2 and the gear on the telescopic arm rotating platform 3-1. The ring gears are meshed, the fulcrum of the fixed arm of the insulating telescopic arm 2 is hinged on the telescopic arm rotating platform 3-1, and the cylinder seat of a linear oil cylinder 3-3 is hinged on the telescopic arm rotating platform 3-1, and the linear oil cylinder 3-3 The telescopic end is hinged on the fixed arm body away from the 2 fulcrums of the insulating telescopic arm. The structure of the insulating telescopic arm 2 is similar to the linear telescopic oil cylinder, and the fixed arm of the insulating telescopic arm 2 is equivalent to a section of the cylinder body on the linear telescopic oil cylinder. In this way, the insulating telescopic arm 2 installed on the lifting platform 3 can rotate 360° on the platform surface, and the telescopic length of the insulating telescopic arm 2 can be changed between 2-6 meters to meet the ground insulation requirements of the 500kV system. At the same time, the hydraulic cylinder at the root of the telescopic arm makes the insulating telescopic arm 2 move at an elevation angle of 0-60° on the vertical plane of the lifting platform, so as to drive the dry ice particle nozzle assembly 1 at the end of the insulating pipeline to move vertically along the object to be cleaned. The insulating telescopic arm 2 adopts a hydraulic or mechanical drive device, so that the length of the insulating telescopic arm 2 can be changed within 2-6m. The insulating telescopic arm 2 can be subjected to high-voltage insulation treatment to ensure the maximum distance between the lifting platform 3 and the dry ice particle sprinkler assembly 1. The electrical insulation strength meets the insulation requirements of the working voltage of the 500kV transmission system. The lifting platform 3 is also provided with oil supply devices such as an oil pump and an oil tank, and supplies oil to the hydraulic motor 3-2 through a pipeline.

High-voltage electrical insulation measures can be taken between the dry ice particle sprinkler assembly 1 and the dry ice conveying device 4 to isolate the high potential of the insulating surface to be cleaned, so as to realize the cleaning operation under electrified conditions. Meanwhile, the vehicle body 8 is provided with a grounding base 6 . The ground base 6 can safely ground the cleaning system.

The operation process of washing machine of the present invention is as follows:

1. Determine the lifting height of the lifting platform 3 according to the height of the object to be cleaned (such as insulators or bushings).

2. Extend the insulating telescopic arm 2 through the control handle, so that the nozzle assembly 1 contains the cleaning objects.

3. According to the size of the object to be cleaned (such as the diameter of the insulator or casing), start to adjust the opening distance of the two nozzles 1-8 on the nozzle assembly 1, and make the cylinder 1-10 reach the designated cleaning position, and start to adjust the nozzle assembly 1. The swing cylinder 1-9 reaches the designated horizontal cleaning position.

4. Start the air motor 1-1 to make the semi-circular track 1-7 make a circular motion, and observe whether the motion track meets the requirement of equidistant motion centered on the object to be cleaned.

5. Turn on the dry ice delivery device 4, adjust the output air pressure to reach the rated working condition, and turn on the cleaning switch to start cleaning.

6. The air motor 1-1 drives the two nozzles 1-8 to move in a circle once to clean the circumferential surface of the object to be cleaned, and then swings the cylinder 1-9 to make the two nozzles 1-8 bend down by 45°, the air motor 1 -1 drives the two nozzles 1-8 to move in a circular motion to clean once again.

7. Control the lifting platform to move down the height of a piece of umbrella skirt, repeat step 6, and then swing the cylinder 1-9 to make the two nozzles up 45°, the air motor 1-1 drives the two nozzles 1-8 to move in a circle once, for Clean the circumferential surface of the next section of the object to be cleaned.

8 Repeat the work according to step 7 until all the sheds are cleaned, turn off the air source, retract the insulating telescopic arm 2, lower the lifting platform 3, and complete a live cleaning operation.

Referring to Fig. 7, the control process of the control device 5 of the present invention is as follows: close the main switch QS1, the air compressor in the dry ice delivery device 4, the dryer, the dry ice blasting machine, and the hydraulic system motor are energized. It is converted into 24V direct current to control the position of each solenoid valve in the hydraulic system and pneumatic system. Close the combination switch QS2-QS7 respectively to control the action of the corresponding solenoid valve.

When the lifting platform 3 rises, the coil of the lifting platform electromagnetic valve OEV1 is powered off, the left position works, the hydraulic oil enters the oil cylinder through the speed control valve, the lifting platform 3 moves upward, and the opening of the speed control valve is adjusted by the joystick to adjust the rise of the lifting platform 3 Speed; when the lifting platform 3 descends, the coil of the lifting platform solenoid valve OEV1 is energized, and the right position works, and the hydraulic oil enters the oil cylinder through the speed regulating valve, so that the lifting platform 3 descends. The rate of decline.

After the lifting platform 3 reaches the working position, the coil of the insulating arm rotary solenoid valve OEV3 is powered off, and the left position works. The hydraulic oil enters the hydraulic motor through the speed regulating valve, so that the telescopic insulating arm 2 makes a circular motion, and the speed regulating valve is adjusted by the joystick. The opening adjusts the rotation speed and stop of the telescopic insulating arm 2; when it rotates in the reverse direction, the coil of the insulating arm rotation solenoid valve OEV3 is energized, and the right position works, and the hydraulic oil enters the hydraulic motor through the speed regulating valve, so that the telescopic insulating arm 2 rotates in the opposite direction. The opening of the speed regulating valve is adjusted by the joystick to adjust the rotation speed and stop of the telescopic insulating arm 2 .

After the angle of the telescopic insulating arm 2 is aligned, the coil of the insulating arm pitch solenoid valve OEV2 is powered off, and the left position works. The hydraulic oil enters the oil cylinder through the speed control valve, and the insulating arm moves upward to reach a certain elevation angle. The opening of the speed valve is to adjust the movement speed of the telescopic insulating arm 2 pitch; Moving downwards, the opening of the speed regulating valve is adjusted by the joystick to adjust the motion speed of the pitch of the telescopic insulating arm 2.

After the nozzles 1-8 reach the cleaning position, the coil of the swing cylinder solenoid valve AEV1 is powered off, the left position works, the gas enters the radial air motor and the tilt air motor through the speed control valve, and the spray angle of the nozzles 1-8 is 45° downward , the air supply system is composed of air compressor, air storage tank, filter, dryer, etc. to provide pressure gas into the dry ice cleaning machine, spray dry ice to the objects to be cleaned such as insulators and bushings through spray guns 1-8, and clean the objects to be cleaned The upper surface of the swing cylinder solenoid valve AEV1 is energized, the right position works, and the nozzle 1-8 sprays at an angle of 45° upward to clean the lower surface of the object to be cleaned.

The coil of the air motor solenoid valve AEV3 is powered off, the left position works, the gas enters the air motor 1-1 through the speed regulating valve, and after being decelerated by the reduction box, the torque of the output shaft of the air motor 1-1 passes through the sprocket 1-3. The power is transmitted to the curved plate chain 1-6 fixed on the trough bracket 1-2, which drives the trough bracket 1-2 to rotate around the axis of the object to be cleaned, so that the nozzle 1-8 rotates around the axis of the object to be cleaned, After the nozzle 1-8 rotates 180°, push the touch lever of the mechanical control valve to make the right position of the mechanical control valve work, and the air motor 1-1 stops working; the lifting system is lowered by one position, and the coil of the air motor solenoid valve AEV3 is energized. The right position works, the air motor 1-1 reversely rotates, and the spray head 1-8 reversely rotates 180° to complete the cleaning of the second cleaning unit.

When cleaning other diameters of objects to be cleaned, the coil of the cylinder solenoid valve AEV2 is powered off, and the left position works. The gas enters the cylinder 1-10 through the speed control valve, and drives the nozzles 1-8 to move radially along the surface of the object to be cleaned. The distance between the nozzle and the surface being cleaned.

Claims (8)

1. A dry ice cleaning vehicle with external insulation for electrical equipment, including a vehicle body (8) and a dry ice delivery device (4) fixed on the vehicle body (8), characterized in that: the vehicle body (8) is fixed with a lift (7), the top of the elevator (7) is provided with a lifting platform (3), the lifting platform (3) is provided with an insulating telescopic arm (2), and the telescopic end of the insulating telescopic arm (2) is connected with a dry ice particle automatic track sprinkler assembly (1), the dry ice conveying insulating pipeline (4-1) on the dry ice conveying device (4) communicates with the nozzle (1-8) on the dry ice particle automatic track nozzle assembly (1); The dry ice particle automatic track sprinkler assembly (1) includes an air motor (1-1), a trough bracket (1-2), a pressure wheel set (1-4), a track bracket (1-5), and a semicircle The track (1-7), the nozzle (1-8), the notches of the trough support (1-2) are arranged horizontally, the outside of the trough support (1-2) bottom side and the insulating telescopic arm (2) The flexible end of the fixed connection, the air motor (1-1) is fixed on the outer wall of the groove plate on the grooved bracket (1-2) through the bolt group (1-11), and the grooved bracket (1-2 ) is fixed with a track bracket (1-5) on the inner wall of the bracket bolt group (1-12), and the track bracket (1-5) is provided with a pressure roller group (1- 4), the pressure roller group (1-4) is provided with pressure rollers corresponding to the semi-circumferential track (1-7), and the pressure roller is in rolling contact with the rail surface of the semi-circular track (1-7), and the semi-circular track (1-7) 7) nozzles (1-8) are installed at both ends, and the output end of the air motor (1-1) stretches into the inner wall of the groove plate on the trough support (1-2), and the air motor (1-2) -1) The output end is fixed with a sprocket (1-3) or a gear, and a curved plate chain (1-6) or an arc-shaped rack is arranged on the arc length direction of the outer wall of the semi-circumferential track (1-7) , the sprocket (1-3) is meshed with the bent plate chain (1-6), or the gear is meshed with the arc rack. 2. The dry ice cleaning vehicle with external insulation of electrical equipment according to claim 1, characterized in that: the spray head (1-8) is fixed on the output shaft of the swing cylinder (1-9), and the swing cylinder (1-9) 9) The telescopic end of the cylinder (1-10) is fixed on the cylinder base (1-13), the cylinder base (1-13) is fixed on the front linear guide rail (1-15), and the front linear guide rail (1-15 ) and the front guide rail slide seat (1-17), the front guide rail slide seat (1-17) and the cylinder seat of the cylinder (1-10) are fixed on the guide rail base (1-14), and the guide rail base (1- 14) Fix on the rear linear guide rail (1-16), the rear linear guide rail (1-16) is parallel to the front linear guide rail (1-15), the rear linear guide rail (1-16) and the rear guide rail slide seat (1- 18) Sliding fit, the rear guide rail slide seat (1-18) is fixedly connected with the semi-circumferential rail (1-7) through the bottom plate (1-19), and the board body of the guide rail base (1-14) is along the rear linear guide rail (1-16) is evenly provided with a row of positioning holes (1-20) in the longitudinal direction, and the corresponding positioning holes (1-20) on the base plate (1-19) are provided with bayonet support (1-21), and the locking The pin support (1-21) is provided with a bayonet pin (1-22), and the bayonet pin (1-22) is inserted into the positioning hole (1-20) for connection. 3. The dry ice cleaning vehicle for external insulation of electrical equipment according to claim 1, characterized in that: the cross section of the semicircle track (1-7) is I-shaped, and the track bracket (1-5) corresponds to a semicircle At least two groups of pressure roller sets (1-4) are arranged on the rail bottom of the circumferential track (1-7), and each set of pressure roller sets (1-4) corresponds to the upper and lower parts of the semi-circular track (1-7) rail bottom. Both sides are provided with pressure rollers, and each pressure roller is in rolling contact with the upper and lower sides of the rail bottom of the semi-circumferential track (1-7), and the arc length direction of the outer wall of the rail waist of the semi-circular track (1-7) is set There are bent plate chains (1-6). 4. The dry ice cleaning vehicle for external insulation of electrical equipment according to claim 1, characterized in that: the cross-section of the semicircle track (1-7) is box-shaped, and the track bracket (1-5) corresponds to a semicircle The rail bottom of the peripheral track (1-7) is provided with at least two sets of pressure rollers (1-4), and the outer walls of the box-shaped four sides corresponding to the semi-circular track (1-7) on each set of pressure rollers (1-4) are Pressure wheels are provided, and each pressure wheel is in rolling contact with the box-shaped outer wall of the semi-circumferential track (1-7), and a curved plate chain (1 -6). 5. The dry ice cleaning vehicle for external insulation of electrical equipment according to claim 1, 3 or 4, characterized in that: the diameter of the central arc of the semicircular track (1-7) is 800-1500 mm, and the central arc The included angle is 180°-220°. 6. The dry ice cleaning vehicle with external insulation of electrical equipment according to claim 1, characterized in that: the vehicle body (8) is provided with a grounding base (6). 7. The dry ice cleaning vehicle for external insulation of electrical equipment according to claim 1, characterized in that: the lift (7) is a scissor lift. 8. The dry ice cleaning vehicle with external insulation of electrical equipment according to claim 1, characterized in that: the telescopic arm rotating platform (3-1) is arranged on the lifting platform (3), and the lifting platform (3) is fixed There is a hydraulic motor (3-2), the gear on the output shaft of the hydraulic motor (3-2) meshes with the ring gear on the telescopic arm rotating platform (3-1), and the fixed arm fulcrum of the insulated telescopic arm (2) is hinged On the telescopic arm rotating platform (3-1), and the cylinder seat of a linear oil cylinder (3-3) is hinged on the telescopic arm rotating platform (3-1), the telescopic end of the linear oil cylinder (3-3) is hinged on the On the fixed arm body of telescopic arm (2) fulcrum.

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