Transmission line multi-barrier anti-icing spraying device and method

Abstract

The present invention discloses a transmission line multi-barrier anti-icing spraying device and method, including a front spraying device, a rear spraying device, a spraying equipment and a drying device; the front spraying device is used to be placed above the front end of the transmission line; the rear spraying device is used to be placed below the rear end of the same transmission line; the spraying equipment is placed in the front spraying device and the rear spraying device, and is independently used to spray the upper and lower parts of the transmission line to form independent coatings; the drying device is arranged in the front spraying device and the rear spraying device, and is independently used to spray the coatings above and below the transmission line for drying treatment. By setting the upper surface of the transmission line to be hydrophilic and have a low freezing point, it is beneficial for rain and snow to slide to the lower surface, and the hydrophobic coating on the lower surface is beneficial for rain and snow to fall off. The hydrophobic coating on the lower surface contains carbonizable nano-calcium oxide particles, and carbonization drives the nano-calcium oxide particles to become nano-calcium carbonate, thereby optimizing the hydrophobic papillae. Further reduce attached water icing.

Description

Technical Field

[0001] The present invention belongs to the technical field of anti-icing, and in particular relates to a transmission line multi-barrier anti-icing spraying device and method. Background Art

[0002] At present, the main methods for anti-icing and de-icing on the surface of power transmission line conductors include ice melting, mechanical de-icing and anti-icing coating. The mechanical de-icing method has the problems of extremely low safety and efficiency; the ice melting method refers to the use of pulse current or short-circuit current to generate a large amount of heat on the transmission line to promote the shedding of ice on the surface of the line, but this method is costly and easy to damage the line.

[0003] Anti-icing methods have become a research hotspot in recent years. Anti-icing coating method refers to the process of applying special functional coatings on the surface of power equipment, which can achieve the effect of inhibiting or slowing down icing by relying on the hydrophobic properties of the coating material during the icing process. At present, the anti-icing coating method mainly includes photothermal coating anti-icing, electric heating coating anti-icing, ice melting coating anti-icing and hydrophobic coating anti-icing. These methods have their own advantages and disadvantages, and often have disadvantages such as poor effect, high cost and short service life. Summary of the invention

[0004] The present invention aims to solve the technical problems existing in the background technology and to provide a transmission line multi-barrier anti-icing spraying device and method.

[0005] In order to solve the technical problem, the technical solution of the present invention is:

[0006] A multi-barrier anti-icing spraying device for transmission lines, the device comprising: a front spraying device, a rear spraying device, a spraying equipment and a drying device; the front spraying device is installed above the front end of the transmission line; the rear spraying device is installed below the rear end of the same transmission line; the spraying equipment is installed in the front spraying device and the rear spraying device, spraying the upper and lower parts of the transmission line to form independent coatings; the drying device is installed in the front spraying device and the rear spraying device, and drying the coatings sprayed above and below the transmission line.

[0007] Furthermore, the front spraying device and the rear spraying device both include: a clamping wheel, a support frame and an operating rod; the clamping wheel is a wheel structure with a groove, in which a power transmission line is placed, and the support frame is used to fix the clamping wheel; one end of the operating rod is fixed to the clamping wheel, and the other end extends at a certain angle to the vertical direction.

[0008] Furthermore, the front spraying device and the rear spraying device further include: a spherical shell track support structure, the spherical shell track support structure is integrally formed by a bilaterally symmetrical hollow hemispherical structure, wherein one end of the hemispherical structure is fixed by the other end of the operating rod extending out;

[0009] The spraying equipment comprises: a hydrophilic coating spraying equipment and a hydrophobic coating spraying equipment; the hydrophilic coating spraying equipment and the hydrophobic coating spraying equipment are cross-distributed inside the spherical shell track support structure of the front spraying device and the rear spraying device.

[0010] Furthermore, the drying device is installed in the middle of the bilaterally symmetrical hollow hemispherical structure and is distributed behind the spraying equipment when the spraying equipment is working forward.

[0011] Furthermore, a battery and a coating raw material tank are installed at the lower end of the support frame, and the battery supplies power to the front spray device, the rear spray device, the spraying equipment and the drying device; the coating raw material tank pipeline is connected to the spraying equipment; a pressure wheel driving unit is installed on the outer side of the support frame, and the pressure wheel is driven to move by the pressure wheel driving unit.

[0012] A method for preventing icing of a transmission line with multiple barriers, the method being applied to any of the above-mentioned devices, the method comprising:

[0013] S1: Use a drone to lift the front spray device and the rear spray device to the height of the transmission line, and place the grooved wheels on the transmission line;

[0014] S2: merging the spherical shell track support structures of the front spraying device and the rear spraying device up and down to form a spherical shell structure;

[0015] S3: Through the configured power system and battery system, a spraying device is used to independently spray a hydrophilic coating on the upper end of the transmission line and a hydrophobic coating on the lower end, and the spraying raw materials are placed at the bottom of the support frame to facilitate continuous spraying work during the movement of the transmission line; a drying device is used to dry the materials while spraying;

[0016] S4: After spraying, a drone with a preset visual neural network is used to collect data on the upper and lower surfaces of the transmission line. The integrity of the anti-icing coating is judged based on the color of the upper and lower surface coatings, and the above method is used for local supplementation until all spraying work is completed.

[0017] Furthermore, the spraying material of the hydrophilic coating includes the following components in mass fraction: 10-20% polycarboxylic acid, 8-12% sodium chloride, 2-3% sodium sulfate, 0.2-0.3% cobalt blue and the balance water.

[0018] Furthermore, the spraying material of the hydrophobic coating includes dimethyl silicone oil with a mass fraction of each component being: 0.1-0.2% of nano-ferrosoferric oxide and 0.1-0.2% of nano-calcium oxide.

[0019] Furthermore, the molecular weight of the polycarboxylic acid is 30,000-50,000.

[0020] Furthermore, the particle size of the nano-ferroferric oxide and the nano-calcium oxide is less than 100 nm. The nano-calcium oxide undergoes a carbonization reaction in the air to become nano-calcium carbonate, and the particle volume increases, thereby increasing the hydrophobic layer papillae and enhancing the hydrophobic bead effect.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) The hydrophilic coating of the present invention contains polycarboxylic acid to make the coating hydrophilic, sodium chloride and sodium sulfate can lower the freezing point of water, and cobalt blue makes the coating blue, which is used for visual inspection of coating integrity by drones.

[0023] (2) The nano calcium oxide in the hydrophobic coating of the present invention has photothermal effect and magnetic induction thermal effect, which can increase the surface temperature of the transmission line and prevent icing. The mixture of nano ferroferric oxide and nano calcium oxide is black and red, which can be used for unmanned aerial vehicle visual inspection of coating integrity.

[0024] (3) The coating of the present invention includes nano calcium oxide, which can form nano calcium carbonate through natural carbonization to assist the formation of hydrophobic papillae.

[0025] (4) The present invention has different coatings on the upper and lower surfaces of the transmission line, which is designed based on the operating conditions of the transmission line. The upper surface of the transmission line is hydrophilic and has a low freezing point, which is conducive to rain and snow sliding down to the lower surface, and the hydrophobic coating on the lower surface is conducive to the shedding of rain and snow; even if ice is formed, the ice strength on the upper surface of the transmission line is low, and the nano-iron tetroxide and nano-calcium oxide on the lower surface have photothermal effect and magnetic induction thermal effect, which makes the ice close to the lower surface melt first, so that the ice on the lower surface is easier to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the multi-barrier anti-icing device for transmission lines of the present invention;

[0027] Figure 2 It is a front view of the multi-barrier anti-icing device for power transmission lines of the present invention when it is working;

[0028] Figure 3 A top view of the multi-barrier anti-icing device for power transmission lines of the present invention when in operation;

[0029] Figure 4 A schematic diagram of the microstructure of the multi-barrier anti-icing coating for transmission lines of the present invention;

[0030] In the figure: 1-front spraying device; 2-rear spraying device; 3-transmission line; 4-hydrophilic coating spraying device; 5-drying device; 6-second battery; 7-hydrophilic coating raw material tank; 8-hydrophobic coating spraying device; 9-first battery; 10-hydrophobic coating raw material tank; 11-hydrophobic coating; 12-hydrophilic coating; 13-inorganic salt crystal; 14-cobalt blue; 15-hydrophobic layer papilla; 16-nano-ferrous oxide; 17-nano-calcium oxide; 18-water droplets. DETAILED DESCRIPTION

[0031] The specific implementation mode of the present invention is described below in conjunction with embodiments:

[0032] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0033] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0034] Embodiment 1:

[0035] like Figure 1 As shown, it is a schematic diagram of the structure of the device of the present invention, including a front spraying device 1, a rear spraying device 2, a spraying equipment and a drying device 5; the front spraying device 1 is used to be placed above the front end of the power transmission line 3; the rear spraying device 2 is used to be placed below the rear end of the same power transmission line 3; the spraying equipment is provided with a plurality of parts, at least one of which is placed in the front spraying device 1 and the rear spraying device 2, and is independently used to spray the coating above and below the power transmission line 3 to form an independent coating; the drying device 5 is provided with a plurality of parts, at least one of which is placed in the front spraying device 1 and the rear spraying device 2, and is independently used to spray the coating above and below the power transmission line 2 for drying treatment.

[0036] The present invention comprises a front spraying device and a rear spraying device, both of which include a clamping wheel, a support frame, and an operating rod; the clamping wheel is a wheel structure with a groove, in which a power transmission line is placed, and the support frame is used to fix the clamping wheel; one end of the operating rod is fixed to the clamping wheel, and the other end extends out at a certain angle to the vertical direction.

[0037] The present invention also includes a spherical shell track support structure, which is composed of half a spherical shell structure with two cavities. The two parts of the structure are combined into a complete spherical shell structure, wherein one end of the two spherical shell structures is independently fixed to the other end of the operating rod.

[0038] See Figure 2 As shown, it is a schematic diagram of the device of the present invention when it is working. In the present invention, the spraying equipment is set as a hydrophilic coating spraying device 4 and a hydrophobic coating spraying device 8. In order to continuously spray, it also includes a hydrophilic coating raw material tank 7, a hydrophobic coating raw material tank 10, a first battery 9, and a second battery 6; wherein one end of the hydrophilic coating raw material tank 7 is connected to the hydrophilic coating spraying device 4, and is fixedly installed at the bottom of the support frame of the front spraying device 1, and the second battery 6 is connected to the front spraying device 1 to provide a source of electricity.

[0039] One end of the hydrophobic coating raw material tank 10 is connected to the hydrophobic coating spraying device 8 and is fixedly mounted on the bottom of the support frame of the rear spraying device 2. The first battery 9 is connected to the rear spraying device 2 to provide a source of electricity.

[0040] At the same time, the first battery 9 and the second battery 6 in the present invention can also provide gravity so that the center of gravity of the spraying equipment is located below the power transmission line.

[0041] Suction of coating liquid: Pump: An electric pump is usually used to suck the coating liquid from the raw material tank. The pump can be powered by a battery and will generate negative pressure when working, causing the coating liquid to be sucked in through the water pipe. When the pump is started, the negative pressure generated will cause the coating liquid to flow from the raw material tank into the pump body and then be transported through the water pipe. Spraying: The coating liquid is pumped to the spraying equipment through the water pipe. At the nozzle or sprayer, the coating liquid will be compressed or atomized to form fine water droplets for easy spraying. The prior art will not be described in detail.

[0042] The upper end of the support frame has a hole, which is connected to the connecting transmission part of the pressure wheel through the bearing, and a transmission rod is arranged on the outside of the support frame. The lower end of the transmission rod is installed with a driven gear, and the upper end is installed with a crown gear. A spur gear is arranged on the outside of the connecting transmission part of the pressure wheel, and the pressure wheel is driven by the spur gear. The overall process is that the motor drives the driving gear-driven gear-drives the upper crown gear-spur gear-pressure wheel to move; it is equivalent to vertical transmission of gears, which is a prior art and will not be described in detail;

[0043] Alternatively, the end of the motor may be directly fixed to one end of the connecting transmission member to directly drive the clamping wheel to rotate, and a hole may be opened at the upper end of the support frame to fix the connecting bearing and then sleeved to connect the connecting transmission member. This is prior art and will not be described in detail.

[0044] Specifically, the controller writes code to control the switch, speed and rotation direction of the motor. For example, using the Arduino platform:

[0045] const int motorPin1 = 3; / / control the motor to move forward

[0046] const int motorPin2 = 4; / / control the motor to move backward

[0047] const int speedPin=5; / / PWM control speed

[0048] void setup(){

[0049] pinMode(motorPin1,OUTPUT);

[0050] pinMode(motorPin2,OUTPUT);

[0051] pinMode(speedPin,OUTPUT);

[0052] }

[0053] void loop(){

[0054] / / go ahead

[0055] digitalWrite(motorPin1,HIGH);

[0056] digitalWrite(motorPin2,LOW);

[0057] analogWrite(speedPin,255); / / Set maximum speed

[0058] delay(2000); / / advance 2 seconds

[0059] / / stop

[0060] digitalWrite(motorPin1,LOW);

[0061] digitalWrite(motorPin2,LOW);

[0062] delay(1000); / / stop for 1 second

[0063] / / Back

[0064] digitalWrite(motorPin1,LOW);

[0065] digitalWrite(motorPin2,HIGH);

[0066] analogWrite(speedPin,255); / / Set maximum speed

[0067] delay(2000); / / go back 2 seconds

[0068] }

[0069] In the present invention, the drying device is preferably installed in the middle of the spherical shell structure, working behind the spraying equipment, and is used for drying after spraying.

[0070] As a specific embodiment of the present invention, the present invention also provides a multi-barrier transmission line anti-icing method, specifically: a drone is used to lift two anti-icing coating spraying devices, a front spraying device 1 and a rear spraying device 2, to the height of the transmission line, and a wheel with grooves is placed on the transmission line.

[0071] The two anti-icing coating spraying devices are combined into a spherical shell shape at the upper and lower parts. In the spherical shell spraying device, a nozzle is arranged from top to bottom in one chamber to spray a hydrophilic coating on the upper surface of the transmission line 3 to form a hydrophilic coating. The spraying material of the hydrophilic coating contains 10-20% polycarboxylic acid, 8-12% sodium chloride, 2-3% sodium sulfate, 0.2-0.3% cobalt blue and the balance water.

[0072] The spherical shell spraying device has another chamber in which a nozzle is arranged from bottom to top, and a hydrophobic coating is sprayed on the lower surface of the transmission line 3 to form a spraying material for the hydrophobic coating. The spraying material includes dimethyl silicone oil containing 0.1-0.2% nano-ferroferric oxide and 0.1-0.2% nano-calcium oxide.

[0073] The hydrophilic coating contains polycarboxylic acid to make the coating hydrophilic, sodium chloride and sodium sulfate to lower the freezing point of water, and cobalt blue to make the coating blue for drone visual inspection of coating integrity.

[0074] Nano calcium oxide in the hydrophobic coating has photothermal effect and magnetic induction thermal effect, which can increase the surface temperature of the transmission line and prevent icing. The mixture of nano ferroferric oxide and nano calcium oxide is black and red, which is used for drone visual inspection of coating integrity. Nano calcium oxide is naturally carbonized to form nano calcium carbonate, which assists the formation of hydrophobic papillae.

[0075] The upper surface of the transmission line is hydrophilic and has a low freezing point, which is conducive to rain and snow sliding down to the lower surface. The hydrophobic coating on the lower surface is conducive to the shedding of rain and snow. Even if it freezes, the ice strength on the upper surface of the transmission line is low. The nano-iron tetroxide on the lower surface has a photothermal effect and a magnetic induction thermal effect, which makes the ice close to the lower surface melt first, making the ice on the lower surface easier to fall off. Drones regularly check the color of the upper and lower surfaces of the transmission line, and judge the integrity of the anti-icing coating based on the color integrity. If it is incomplete, continue to use this method to supplement the anti-icing coating.

[0076] Preferably, the molecular weight of the polycarboxylic acid in the present invention is 30000-50000, and the particle size of the nano-ferroferric oxide and nano-calcium oxide is less than 100nm. The negative charge end of the polycarboxylic acid molecule is adsorbed on the surface of the nano-ferroferric oxide and nano-calcium oxide particles, and the positive charge end is exposed, and the nano-particles repel each other, so that the nano-particles are more evenly dispersed on the surface of the transmission line to form a hydrophobic layer, reduce water film coverage and thus reduce ice coverage.

[0077] See Figure 4 The figure shows the schematic diagram of the microstructure of the coating after spraying. The upper surface coating of the transmission line is a hydrophilic coating 12, including inorganic salt crystals, specifically sodium chloride and sodium sulfate; cobalt blue. The lower surface of the transmission line is a hydrophobic coating, including hydrophobic layer papillae 15, nano-iron tetroxide 16, and nano-calcium oxide 17; the water droplets 18, due to the hydrophobic coating properties, will condense and hang on the outer layer of the coating due to surface tension, the nano-iron tetroxide 16 and nano-calcium oxide 17 are mixed close to the inside of the transmission line, and the nano-calcium oxide 17 will become nano-calcium carbonate after carbonization, that is, the hydrophobic layer papillae 15 are distributed on the outside of the nano-iron tetroxide 16 and nano-calcium oxide 17.

[0078] The use of machine learning to detect the integrity of sprayed coatings can be explained using existing technologies:

[0079] 1. Data Collection

[0080] Drone camera placement: Choose the right camera position and angle to ensure clear imaging of the sprayed coating surface.

[0081] Sample collection: Photograph spray coating samples in different states, such as uniform coating, partial missing, bubbles, sagging, color difference and other defects.

[0082] Label data: Manually label the collected samples to determine the coating status of each image (such as qualified, unqualified, missing, color difference, other types of defects, etc.).

[0083] 2. Data Preprocessing

[0084] Image enhancement: Enhance the image, such as adjusting brightness, contrast, and saturation, to improve the robustness of the model.

[0085] Image Cropping and Scaling: Crop and normalize the image to a uniform size and remove irrelevant parts for easier model processing.

[0086] Dataset division: The dataset is divided into training set, validation set and test set, usually with a ratio of 70% training, 15% validation and 15% test.

[0087] 3. Feature extraction and selection

[0088] Traditional methods: Edge detection, color histogram, texture features and other methods can be used to extract relevant features of the image.

[0089] Deep learning: If there is enough data, you can use convolutional neural networks (CNN) to automatically extract image features. Consider using Transfer Learning and start with a pre-trained model.

[0090] 4. Model selection and training

[0091] Model selection: You can use well-known pre-trained convolutional neural networks such as VGG, ResNet, EfficientNet, or design a custom network architecture.

[0092] Training model: Train the model using the training set and adjust the hyperparameters using the validation set to avoid overfitting of the model.

[0093] 5. Performance Evaluation

[0094] Evaluation indicators: Use accuracy, recall, F1-score and other indicators to evaluate model performance.

[0095] Confusion Matrix: Analyze the confusion matrix to evaluate the model’s performance on different coating quality classifications and identify major misclassifications.

[0096] 6. Model Deployment

[0097] Inference optimization: Convert the trained model into a format suitable for real-time applications, such as TensorRT or ONNX format.

[0098] Integrated system: Integrate the optimized model into a real-time inspection system, combined with cameras and computing devices to achieve online coating inspection.

[0099] 7. Feedback and Iteration

[0100] Regular updates: New data is collected regularly, re-annotated, and the model is trained to adapt to new coating characteristics or defect types.

[0101] User feedback: By collecting user feedback, we continuously improve detection algorithms and system performance to enhance user experience and satisfaction.

[0102] 8. Additional Considerations

[0103] Environmental factors: Consider the impact of lighting changes, background noise, etc. on the test results, and take necessary measures to compensate.

[0104] Real-time: Optimize the model to ensure real-time detection needs, reduce processing delays, and ensure detection efficiency and accuracy.

[0105] Through the above design ideas, a machine learning system for detecting the uniformity and integrity of spray coatings can be effectively constructed, thereby improving product quality and production efficiency.

[0106] In order to better introduce the performance of the two hydrophilic coatings and hydrophobic coatings after anti-icing spraying of the present invention, the present invention conducted a comparative experiment. The comparison example was a power cord without surface coating treatment, and the embodiment was a power cord with hydrophilic coatings and hydrophobic coatings of different components. Data on the amount of ice was collected, as follows.

[0107] Embodiment 2:

[0108] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 20% polycarboxylic acid, 8% sodium chloride, 3% sodium sulfate, 0.2% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.1% nano-ferroferric oxide and 0.2% nano-calcium oxide.

[0109] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0110] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the control group (the surface was not coated) had surface ice accumulation causing the wire weight to increase by 4.8%, while the wire weight increased by 0.9% with the surface coated with hydrophilic coating and hydrophobic coating.

[0111] Embodiment 3:

[0112] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 15% polycarboxylic acid, 12% sodium chloride, 2.3% sodium sulfate, 0.3% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.2% nano-ferroferric oxide and 0.1% nano-calcium oxide.

[0113] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0114] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (the surface was not coated) caused the wire to increase in weight by 4.5%, while the wire with a surface coated with a hydrophilic coating and a hydrophobic coating increased in weight by 1.2%.

[0115] Embodiment 4:

[0116] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 12% polycarboxylic acid, 9% sodium chloride, 2.5% sodium sulfate, 0.25% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.12% nano-ferroferric oxide and 0.14% nano-calcium oxide.

[0117] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0118] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (the surface was not coated) caused the wire weight to increase by 6.5%, while the wire with the surface coated with hydrophilic coating and hydrophobic coating increased its weight by 0.8%.

[0119] Embodiment 5:

[0120] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 17% polycarboxylic acid, 10% sodium chloride, 2.8% sodium sulfate, 0.23% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.15% nano-ferroferric oxide and 0.16% nano-calcium oxide.

[0121] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0122] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (the surface was not coated) caused the wire weight to increase by 4.7%, while the wire weight increased by 0.9% with the surface coated with hydrophilic coating and hydrophobic coating.

[0123] Embodiment 6:

[0124] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 19% polycarboxylic acid, 8.5% sodium chloride, 2.4% sodium sulfate, 0.21% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.11% nano-ferroferric oxide and 0.17% nano-calcium oxide.

[0125] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0126] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (no surface coating) caused the wire weight to increase by 4.5%, while the wire weight increased by 0.6% after the surface was coated with hydrophilic coating and hydrophobic coating.

[0127] Embodiment 7:

[0128] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 11% polycarboxylic acid, 9.5% sodium chloride, 2.9% sodium sulfate, 0.26% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.14% nano-ferroferric oxide and 0.18% nano-calcium oxide.

[0129] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0130] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (the surface was not coated) caused the wire weight to increase by 6.5%, while the wire weight increased by 1.1% after the surface was coated with hydrophilic coating and hydrophobic coating.

[0131] Embodiment 8:

[0132] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 14% polycarboxylic acid, 10.5% sodium chloride, 2.1% sodium sulfate, 0.27% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.17% nano-ferroferric oxide and 0.13% nano-calcium oxide.

[0133] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0134] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (no surface coating) caused the wire weight to increase by 7.0%, while the wire weight increased by 0.3% with the surface coated with hydrophilic coating and hydrophobic coating.

[0135] Embodiment 9:

[0136] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 15% polycarboxylic acid, 10% sodium chloride, 2.5% sodium sulfate, 0.25% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.15% nano-ferroferric oxide and 0.15% nano-calcium oxide.

[0137] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0138] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (no surface coating) caused the wire weight to increase by 7.5%, while the wire with a surface coated with a hydrophilic coating and a hydrophobic coating increased its weight by 0.25%.

[0139] Embodiment 10:

[0140] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 15% polycarboxylic acid, 10% sodium chloride, 2.5% sodium sulfate, 0.25% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.15% nano-ferroferric oxide and 0.10% nano-calcium oxide.

[0141] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, with its own power device and power supply, and it walks on the transmission line and completes the anti-icing coating spraying. The transmission line is left in the air for three days to allow the surface nano-calcium oxide to undergo carbonization reaction to become nano-calcium carbonate, optimizing the hydrophobic papillae.

[0142] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (the surface was not coated) caused the wire weight to increase by 7.5%, while the wire with the surface coated with hydrophilic coating and hydrophobic coating increased its weight by 0.1%.

[0143] Embodiment 11:

[0144] The spray material for the hydrophilic coating formed on the upper surface of the transmission line contains 15% polycarboxylic acid, 10% sodium chloride, 2.5% sodium sulfate, 0.25% cobalt blue and the balance of water. The spray material for the hydrophobic coating formed on the lower surface of the transmission line is dimethyl silicone oil containing 0.17% nano-ferric tetroxide and 0.15% nano-calcium oxide. The transmission line is left in the air for three days to allow the surface nano-calcium oxide to undergo carbonization reaction and become nano-calcium carbonate, thus optimizing the hydrophobic papillae.

[0145] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0146] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (no surface coating) caused the wire weight to increase by 7.0%, while the wire weight increased by 0.15% after the surface was coated with hydrophilic coating and hydrophobic coating.

[0147] Embodiment 12:

[0148] The spray material for forming a hydrophilic coating on the upper surface of the transmission line contains 15% polycarboxylic acid, 10% sodium chloride, 2.5% sodium sulfate, 0.25% cobalt blue and the balance of water. The spray material for forming a hydrophobic coating on the lower surface of the transmission line is dimethyl silicone oil containing 0.14% nano-ferric tetroxide and 0.20% nano-calcium oxide. The transmission line is left in the air for three days to allow the surface nano-calcium oxide to undergo carbonization reaction and become nano-calcium carbonate, thus optimizing the hydrophobic papillae.

[0149] The grooved wheel is placed on the transmission line, and the two anti-icing coating spraying devices are combined into a spherical shell shape, and it has its own power device and power supply. It walks on the transmission line and completes the anti-icing coating spraying.

[0150] After a one-month refrigerator refrigeration test, during which water mist was sprayed on the surface of the transmission line, the results showed that the amount of ice on the surface of the control group (the surface was not coated) caused the wire weight to increase by 6.5%, while the wire with the surface coated with hydrophilic coating and hydrophobic coating increased its weight by 0.15%.

[0151] Through the above examples, it can be seen that the two layers of spraying materials of the present invention have a great impact on the amount of surface ice. Compared with the wire without surface treatment, the weight gain of the wire with the surface coated with hydrophilic coating and hydrophobic coating of the present invention is within 0.1%-1.5%, but the weight gain of the comparative wire is within 4.5%-7.5%, and the antifreeze effect is more significant.

[0152] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

[0153] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A transmission line multi-barrier anti-icing spraying device, characterized in that: The device comprises: a front spraying device (1), a rear spraying device (2), a spraying equipment and a drying device (5); the front spraying device (1) is installed above the front end of the power transmission line (3); the rear spraying device (2) is installed below the rear end of the same power transmission line (3); the spraying equipment is installed in the front spraying device (1) and the rear spraying device (2), and sprays the upper and lower parts of the power transmission line (3) to form independent coatings; the drying device (5) is installed in the front spraying device (1) and the rear spraying device (2), and dries the coatings sprayed on the upper and lower parts of the power transmission line (2); The front spraying device (1) and the rear spraying device (2) both comprise: a clamping wheel, a support frame and an operating rod; the clamping wheel is a wheel structure with a groove, in which a power transmission line is placed, and the support frame is used to fix the clamping wheel; one end of the operating rod is fixed to the clamping wheel, and the other end extends at a certain angle to the vertical direction; The front spraying device (1) and the rear spraying device (2) further include: a spherical shell track support structure, wherein the spherical shell track support structure is integrally formed by a bilaterally symmetrical hollow hemispherical structure, wherein one end of the hemispherical structure is fixed by the other end of the operating rod extending out; The spraying equipment comprises: a hydrophilic coating spraying equipment (4) and a hydrophobic coating spraying equipment (8); the hydrophilic coating spraying equipment (4) and the hydrophobic coating spraying equipment (8) are cross-distributed inside the spherical shell track support structure of the front spraying device (1) and the rear spraying device (2).

2. The transmission line multi-barrier anti-icing spraying device according to claim 1 is characterized in that: The drying device (5) is installed in the middle of the bilaterally symmetrical hollow hemispherical structure and is distributed behind the spraying equipment when it is working forward.

3. The transmission line multi-barrier anti-icing spraying device according to claim 1 is characterized in that: A battery and a coating material tank are installed at the lower end of the support frame, and the battery supplies power to the front spray device (1), the rear spray device (2), the spraying equipment and the drying device (5); the coating material tank pipeline is connected to the spraying equipment; a clamping wheel driving unit is installed on the outer side of the support frame, and the clamping wheel is driven to move by the clamping wheel driving unit.

4. A method for preventing icing of transmission lines with multiple barriers, characterized in that: The method is applied to the device described in any one of claims 1 to 3, and the method comprises: S1: Using a drone to lift the front spraying device (1) and the rear spraying device (2) to the height of the power transmission line, and placing the wheel with grooves on the power transmission line; S2: merging the spherical shell track support structures of the front spraying device (1) and the rear spraying device (2) up and down to form a spherical shell structure; S3: By configuring the power system and battery system, a spraying device is used to independently spray a hydrophilic coating (12) on the upper end of the transmission line (3) and a hydrophobic coating (11) on the lower end, and the spraying raw materials are placed at the bottom of the support frame to facilitate continuous spraying work during the movement of the transmission line (3); a drying device (5) is used to perform drying treatment while spraying; S4: After spraying, a drone with a preset visual neural network is used to collect data on the upper and lower surfaces of the transmission line. The integrity of the anti-icing coating is judged based on the color of the upper and lower surface coatings, and the above method is used for local supplementation until all spraying work is completed.

5. A method for preventing icing of a transmission line with multiple barriers according to claim 4, characterized in that: The spraying material of the hydrophilic coating (12) comprises the following components in mass fraction: 10-20% polycarboxylic acid, 8-12% sodium chloride, 2-3% sodium sulfate, 0.2-0.3% cobalt blue and the balance water.

6. A method for preventing icing of a transmission line with multiple barriers according to claim 4, characterized in that: The spraying material of the hydrophobic coating (11) comprises dimethyl silicone oil with the mass fraction of each component being: 0.1-0.2% of nano-ferrosoferric oxide and 0.1-0.2% of nano-calcium oxide.

7. A method for preventing icing of a transmission line with multiple barriers according to claim 5, characterized in that: The molecular weight of the polycarboxylic acid is 30,000-50,000.

8. A method for preventing icing of a transmission line with multiple barriers according to claim 6, characterized in that: The particle sizes of the nano-ferroferric oxide (16) and the nano-calcium oxide (17) are less than 100 nm. The nano-calcium oxide (17) undergoes a carbonization reaction in the air to become nano-calcium carbonate, the particle volume increases, the hydrophobic layer papillae (15) are enlarged, and the effect of the hydrophobic beads (18) is enhanced.

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