Energy-gathered air cannon for eliminating influence of freezing rain on power grid safety

Abstract

The invention discloses an energy-gathered air cannon for eliminating the influence of freezing rain on power grid safety, and belongs to the technical field of power grid deicing equipment. The energy-gathered air cannon comprises a detonation chamber, a launch canister, a gas supply system, an electrical system and a chassis, wherein the detonation chamber is used for realizing gas detonation to generate shock waves; the launching cylinder adopts a horn mouth form, so that the airflow directionality is enhanced; the gas supply system is used for mixing air and propane gas in proportion through double-path gas supply and then conveying the mixture to the detonation chamber; and an electrical system adopts alternating current 380V power supply, supports wireless remote control, and can monitor the state of equipment in real time. Deicing is realized based on shock wave mechanics and a vibration effect, and the device has the advantages of lossless cleaning, high efficiency, rapidness, safety, reliability, environmental protection, energy conservation and high adaptability, can customize launch canisters for different key equipment of a power grid, is stable in operation and flexible in control, effectively solves the problem of icing of the power grid in freezing rain weather, is suitable for various power grid scenes, and has a wide application prospect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power grid safety protection equipment, and particularly relates to a concentrated air cannon for removing the influence of freezing rain on power grid safety. BACKGROUND

[0002] Freezing rain disaster is one of the main natural disasters affecting the safe operation of power grids. The economic losses caused by power grid failures due to freezing rain each year amount to hundreds of millions of dollars worldwide. In southern China, long periods of low-temperature rain, snow and freezing weather often occur in winter, and the problem of power grid icing is particularly prominent. Large-scale power grid icing tower collapse and wire breakage accidents have occurred many times in history, seriously affecting the stable supply of electricity.

[0003] To address the problem of power grid icing, domestic and foreign scientific research institutions and enterprises have carried out a large number of related technical research. The existing deicing technologies each have limitations: manual knocking deicing is primitive, not only inefficient, but also may damage the wires and insulators due to improper operation; mechanical deicing equipment is bulky and has poor mobility, making it difficult to meet the deicing needs of power grid equipment in complex terrain; thermal deicing technologies such as direct current deicing and alternating current deicing require a large amount of electrical energy and are only suitable for specific types of transmission lines, and are not very versatile; and chemical deicing methods such as spreading deicing agents can corrode power grid metal components and pollute the soil and water sources, which does not meet environmental protection requirements.

[0004] Air cannon technology was initially applied in the mining, cement and other industries to remove material blockages in silos and pipelines. With the development of technology, its application in the field of disaster prevention and mitigation has gradually expanded. The core principle of air cannon deicing is to use the shock wave generated by the instantaneous release of high-pressure air to achieve the breaking and peeling of ice layers through impact force, vibration resonance and shearing action. Compared with traditional deicing technologies, air cannon deicing has significant technical advantages. However, existing air cannon equipment is mostly designed to be large-scale and is mainly used in the fields of mining and construction, lacking special designs tailored to the characteristics of power grid equipment. There are problems such as large size, poor mobility, complex operation, and inability to adapt to the deicing needs of different key power grid equipment.

[0005] At the same time, existing air cannons still have deficiencies in air supply stability, shock wave concentration effect, and remote control precision, making it difficult to meet the stringent requirements of equipment damage-free, safe and reliable, and efficient and fast in power grid deicing operations. For example, some air cannons use a single air supply method, the detonation effect is unstable, and the shock wave intensity is difficult to control accurately; some equipment lack flexible angle adjustment mechanisms and cannot accurately remove ice at different heights and locations; some equipment requires on-site close-range operation, increasing the safety risks of workers in harsh weather conditions.

[0006] Therefore, developing a miniaturized, universal, flexible, and adaptable energy-concentrating air cannon suitable for various key power grid equipment, and addressing the aforementioned deficiencies in existing technologies, is of significant practical importance and application value for improving the power grid's resistance to freezing rain disasters and ensuring its safe and stable operation. This invention is based on this principle and designs an energy-concentrating air cannon specifically designed to eliminate the impact of freezing rain on power grid safety. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of existing power grid de-icing technologies and the inadequacies of existing air cannons in power grid de-icing applications, and to provide a focused air cannon for eliminating the impact of freezing rain on power grid safety. This focused air cannon features a miniaturized and universal design, simple operation, stable performance, and flexible control. It can be customized with launch tubes for different key power grid equipment, achieving non-destructive, efficient, and safe de-icing operations through shock wave mechanics and vibration effects. It also possesses environmentally friendly, energy-saving, and highly adaptable characteristics, effectively solving the problem of power grid icing during freezing rain and ensuring the safe and stable operation of the power grid.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a shaped-energy air cannon for eliminating the impact of freezing rain on power grid safety, comprising a detonation chamber, a launching tube, a gas supply system, an electrical system, and a chassis. The detonation chamber, launching tube, gas supply system, and electrical system are all mounted on the chassis. One end of the detonation chamber is sealed to the launching tube, and the other end is connected to the gas supply system. The electrical system is electrically connected to the gas supply system and the detonation chamber, respectively, and is used to control gas supply, detonation triggering, and equipment status monitoring.

[0009] Furthermore, the detonation chamber is a circular canister structure made of high-strength alloy steel. The inner wall of the canister is coated with a wear-resistant and corrosion-resistant coating. The two ends of the detonation chamber are respectively provided with an air inlet and an air outlet. The air inlet is sealed to the air outlet of the gas supply system, and the air outlet is fixedly connected to the launch tube through a flange. An ignition device is provided in the detonation chamber, and the ignition device is electrically connected to the electrical system.

[0010] Furthermore, the launch tube adopts a flared design, including a connecting section, a contraction section, and a diffusion section connected in sequence. The connecting section is sealed to the outlet of the detonation chamber. The inner diameter of the contraction section gradually decreases from the end near the connecting section to the end near the diffusion section, and the inner diameter of the diffusion section gradually increases from the end near the contraction section outwards. The launch tube is made of lightweight, high-strength aluminum alloy material, and the inner wall is polished. Its length and diameter can be customized according to the de-icing requirements of different key equipment in the power grid.

[0011] Furthermore, the gas supply system includes a compressor, a propane tank, a mixing chamber, a flow control valve, and a pressure sensor. The outlets of the compressor and the propane tank are connected to the mixing chamber via pipelines. Both gas supply pipelines are equipped with flow control valves and pressure sensors. The outlet of the mixing chamber is connected to the inlet of the detonation chamber.

[0012] Furthermore, the electrical system includes a power supply system and a control system. The power supply system adopts an AC 380V power supply mode and includes a transformer, a voltage regulator, and a backup power supply, with the backup power supply being a lithium battery pack. The control system adopts wireless remote control and includes a controller, a remote control receiver, a status display module, and multiple control switches. The controller is electrically connected to the flow control valve, pressure sensor, ignition device, and compressor, respectively.

[0013] Furthermore, the chassis is welded from steel plates, with anti-slip and wear-resistant pads on the bottom. The chassis is equipped with a seat ring and connecting bolts. The energy-concentrating air cannon is fixedly connected to the seat ring through the connecting bolts. The bottom of the chassis is also equipped with a rotating mechanism and a braking mechanism. The rotating mechanism includes a rotating motor and a gear transmission assembly. The rotating motor is electrically connected to the controller.

[0014] Furthermore, the detonation chamber has a wall thickness of 10-15mm, an internal volume of 0.5-1.2m³, and can withstand instantaneous pressures of 0.8-1.2MPa.

[0015] Furthermore, the length of the connecting section of the launch tube is 20-30cm, the cone angle of the contraction section is 30°-45°, the cone angle of the diffusion section is 60°-90°, and the maximum diameter of the flare is 50-80cm.

[0016] Furthermore, the compressor output pressure of the gas supply system is 0.8-1.0 MPa, the working pressure of the propane tank is 1.0-1.5 MPa, and the mixing ratio of air to propane in the mixing chamber is 10:1-15:1.

[0017] Furthermore, it also includes a heating system, which comprises an electric heating plate and a temperature sensor. The electric heating plate is installed on the outer wall of the pipes connecting the detonation chamber and the gas supply system, and the temperature sensor is used to monitor the equipment temperature. The electrical system is also equipped with an emergency protection module. When the pressure sensor detects that the gas pressure exceeds a preset threshold, or the temperature sensor detects an abnormal equipment temperature, the emergency protection module automatically cuts off the power supply and issues an alarm signal.

[0018] The shaped-charge air cannon of the present invention has the following significant advantages compared with the prior art:

[0019] Achieving non-destructive removal and protecting power grid equipment: This invention removes ice layers through shock waves, vibration resonance, and shearing action, avoiding secondary damage such as scratches and abrasions caused by mechanical de-icing. It will not cause physical damage to key power grid equipment such as wires, insulators, and tower coatings, thus extending the service life of power grid equipment and reducing equipment maintenance costs.

[0020] Highly efficient and rapid de-icing with a wide coverage area: The flared structure of the launch tube enhances the directionality and intensity of the shock wave, allowing a single trigger to clear a large area of ​​ice in a fan-shaped region in front of the muzzle. Compared to manual de-icing and traditional mechanical de-icing, efficiency is increased by dozens of times. Furthermore, multiple air cannons can be deployed according to operational needs to achieve large-scale, rapid de-icing, effectively shortening the time required to handle icing on the power grid.

[0021] Excellent safety performance and reduced operational risks: The non-contact operation method allows operators to control the equipment remotely from the ground or a safe distance, avoiding high-risk operations in high-altitude, slippery, and electrified environments; the equipment is purely mechanical and does not generate electric sparks during ignition and operation, completely eliminating the risk of electric shock, and is suitable for de-icing operations on high-voltage electrified grid equipment.

[0022] Environmentally friendly and energy-saving, in line with the concept of green development: It does not use any chemical solvents, but only consumes electricity to drive the compressor to compress air. Propane gas is used as an auxiliary combustion gas, with low consumption and no pollution from combustion products. It does not damage the surrounding soil, vegetation and water environment, and meets environmental protection requirements. At the same time, its energy consumption is far lower than that of thermal de-icing technology, achieving the dual goals of energy saving and environmental protection.

[0023] Miniaturized and versatile design with strong adaptability: This invention is the first domestically developed miniaturized shaped-energy air cannon universal launcher. It is small in size and light in weight, can be installed on vehicles, and is suitable for various complex terrains such as mountains, plains, and hills. The length and diameter of the launch tube can be customized according to different key equipment of the power grid, which can meet the de-icing needs of various equipment such as transmission lines, insulators, and iron towers, and has strong versatility.

[0024] Stable and reliable operation, flexible and convenient operation: The detonation chamber and launch tube are made of high-strength materials, which can withstand instantaneous high pressure and the equipment structure is stable; the electrical system is equipped with backup power and emergency protection module, which can ensure safe shutdown of the equipment in case of sudden power failure or abnormality; the control system supports both automatic and manual modes, can accurately adjust the launch angle and shock wave intensity, and is simple and easy to understand to operate, requiring no professional technicians.

[0025] Strong low-temperature adaptability and all-weather operation: Equipped with a heating system, it automatically starts when the ambient temperature is below -5℃ to prevent gas liquefaction and pipeline icing, ensuring normal operation of the equipment in severe cold and freezing rain weather, realizing uninterrupted de-icing operation in all weather conditions, and improving the power grid's disaster resistance capability under extreme weather conditions.

[0026] Real-time status monitoring and convenient operation and maintenance: The status display module of the electrical system can display information such as valve working status, gas pressure, and power supply status in real time, allowing operators to keep abreast of the equipment's operating status and facilitate timely detection and handling of equipment faults; the simple structure of each component of the equipment makes disassembly convenient and subsequent maintenance easy, reducing operation and maintenance costs.

[0027] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the structure of the shaped charge air gun launching system of the present invention;

[0029] Figure 2 is a schematic diagram of the air supply system of the energy-concentrating air cannon of the present invention;

[0030] Figure 3. Schematic diagram of the electrical control system of the shaped-charge air cannon of the present invention;

[0031] Figure 4. Schematic diagram of the test effect of the shaped air cannon of the present invention.

[0032] The markings in the diagram are as follows: 1-Detonation chamber, 2-Launching tube, 21-Connecting section, 22-Contraction section, 23-Diffusion section, 3-Gas supply system, 31-Compressor, 32-Propane tank, 33-Mixing chamber, 34-Flow control valve, 35-Pressure sensor, 4-Electrical system, 41-Power supply system, 42-Control system, 43-Status display module, 5-Chassis, 51-Seat ring, 52-Connecting bolt, 53-Rotating mechanism, 54-Brake mechanism, 6-Heating system, 61-Heating plate, 62-Temperature sensor. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0035] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0037] To enable those skilled in the art to better understand the present application, the following will be combined with... Figure 1 - Figure 4 The technical solutions in the embodiments of this application will be clearly and completely described.

[0038] Example 1

[0039] This embodiment provides a focused air cannon for clearing the impact of freezing rain on power grid safety, suitable for clearing ice from 110kV transmission lines.

[0040] The detonation chamber 1 is made of high-strength alloy steel, with a circular canister structure, a wall thickness of 12mm, an internal volume of 0.8m³, and can withstand an instantaneous pressure of 1.0MPa. The inner wall of the canister is coated with a wear-resistant and corrosion-resistant polytetrafluoroethylene coating, and both the inlet and outlet are equipped with sealing gaskets to ensure that the gas does not leak.

[0041] The launch tube 2 is customized to fit the specifications of power transmission lines. The connecting section 21 is 25cm long, the converging section 22 has a cone angle of 35°, the diffuser section 23 has a cone angle of 75°, and the maximum diameter of the horn is 60cm. It is made of lightweight, high-strength aluminum alloy material, and the inner wall is mirror polished to reduce airflow resistance.

[0042] In the gas supply system 3, the compressor 31 is a screw air compressor with an output pressure of 0.9MPa, the propane tank 32 has a volume of 50L and an operating pressure of 1.2MPa, the mixing ratio of air and propane in the mixing chamber 33 is set to 12:1, the flow control valves 34 on the two gas supply pipelines are electromagnetic flow valves, and the pressure sensor 35 has a measurement range of 0-2.0MPa and an accuracy of ±0.01MPa.

[0043] The power supply system 41 of the electrical system 4 adopts AC 380V power supply, the transformer output voltage is 220V, the voltage regulator has a voltage regulation accuracy of ±1%, and the backup lithium battery pack has a capacity of 100Ah, which can maintain the equipment for 2 hours of emergency operation; the PLC controller of the control system 42 is model S7-200, the remote control receiver has a receiving distance of up to 500m, and the status display module 43 adopts an LCD screen to display information such as gas pressure, valve status, and power supply status in real time.

[0044] The chassis 5 is welded from 10mm thick Q235 steel plate, and the bottom anti-slip and wear-resistant pad is made of rubber. The rotating motor of the rotating mechanism has a power of 1.5kW, a rotation speed of 8° / s, and a rotation angle accuracy of ±1°. The braking mechanism uses an electromagnetic brake with a braking response time of less than 0.5s. The chassis 5 is equipped with a seat ring 51 and connecting bolts 52. The energy-concentrating air cannon is fixedly connected to the seat ring 51 via the connecting bolts 52. The bottom of the chassis 5 also has a rotating mechanism 53 and a braking mechanism 54. The rotating mechanism 53 includes a rotating motor and a gear transmission assembly, and the rotating motor is electrically connected to the controller.

[0045] The heating system 6 has a heating plate 61 with a power of 500W and a temperature sensor 62 with a measurement range of -40℃ to 50℃. When the ambient temperature is below -5℃, the heating plate 61 will start automatically and will turn off automatically when the temperature is above 0℃.

[0046] The focused air cannon underwent de-icing testing on a 110kV transmission line at a power grid base. The test environment temperature was -8℃, and the ice thickness on the transmission line was 10-15mm. Operators controlled the equipment remotely from a distance of 500m on the ground, adjusting the firing angle and triggering the detonation. The shock wave instantly acted on the ice-covered surface of the line, causing the ice layer to rapidly break and fall off under the impact and vibration. A single firing cleared the ice from a 30m radius ahead of the line, demonstrating excellent de-icing performance without any damage to the transmission line. The equipment operated stably without any malfunctions.

[0047] Example 2

[0048] This embodiment provides a focused air cannon for clearing the impact of freezing rain on power grid safety, suitable for clearing ice buildup on power grid insulators.

[0049] The detonation chamber 1 has a wall thickness of 10mm, an internal volume of 0.5m³, and can withstand an instantaneous pressure of 0.8MPa. It is made of high-strength stainless steel, and the inner wall has a ceramic coating to improve its wear resistance.

[0050] The launching tube 2 is customized to meet the characteristics of small size and high precision requirements of insulators. The connecting section 21 is 20cm long, the contraction section 22 has a cone angle of 30°, the diffusion section 23 has a cone angle of 60°, and the maximum diameter of the horn is 50cm. It is made of aviation aluminum alloy material, which is lightweight and high-strength, avoiding the burden on the installation carrier due to excessive weight of the equipment.

[0051] The compressor 31 of the gas supply system 3 has an output pressure of 0.8 MPa, the propane tank 32 has an operating pressure of 1.0 MPa, the air to propane mixing ratio is 10:1, the flow control valve 34 adopts a high-precision proportional valve, which can accurately adjust the gas flow, and the pressure sensor 35 provides real-time feedback of pressure data to ensure a stable mixed gas ratio.

[0052] The backup lithium battery pack of electrical system 4 has a capacity of 80Ah and an emergency operating time of 1.5 hours. The remote control receiver has a receiving distance of 300m, which meets the requirements for close-range and precise control of insulator de-icing operations. The status display module 43 adds a fault alarm indicator light. When the equipment malfunctions, the indicator light flashes and a buzzer alarm is emitted.

[0053] The chassis 5 rotates at a speed of 5° / s with a rotation angle accuracy of ±1°. The braking mechanism employs both mechanical and electromagnetic braking to ensure accurate positioning of the equipment during insulator de-icing operations and prevent displacement.

[0054] The heating system 6 has a heating plate 61 with a power of 300W and a temperature sensor 62 with a response time of less than 1 second, which can quickly sense changes in ambient temperature and ensure that the equipment can start up quickly in low-temperature environments.

[0055] This focused-energy air cannon was tested for de-icing insulators at a power grid substation. The ice thickness on the insulators was 5-8 mm, and the ambient temperature was -10℃. The launch angle was precisely adjusted via remote control, and the cannon was aimed at the ice-covered area of ​​the insulator to trigger a detonation. The shock wave, through the launch tube 2, acted directionally on the insulator surface, rapidly peeling off the ice layer without scratches or damage to the insulator surface. The de-icing efficiency was high, and the operation was convenient, fully meeting the safety and accuracy requirements for insulator de-icing in substations.

[0056] Example 3

[0057] This embodiment provides a focused air cannon for clearing the impact of freezing rain on power grid safety, suitable for clearing ice buildup on power grid tower components.

[0058] The detonation chamber 1 has a wall thickness of 15mm, an internal volume of 1.2m³, and can withstand an instantaneous pressure of 1.2MPa. It is constructed of high-strength alloy steel and the entire tank undergoes flaw detection to ensure there are no welding defects and to guarantee structural safety during high-pressure detonation.

[0059] Launch tube 2 is adapted to the large-area icing requirements of iron tower components. The connecting section 21 is 30cm long, the contraction section 22 has a cone angle of 45°, the diffuser section 23 has a cone angle of 90°, and the maximum diameter of the flare is 80cm. It is made of thickened aluminum alloy material to enhance the impact resistance of launch tube 2 and extend its service life.

[0060] The compressor 31 of the gas supply system 3 outputs a pressure of 1.0 MPa, the propane tank 32 operates at a pressure of 1.5 MPa, the air-to-propane mixing ratio is 15:1, and the volume of the mixing chamber 33 is increased to 0.2 m³. 3 Ensure a sufficient supply of mixed gas to meet the shock wave intensity requirements for large-area de-icing of tower components.

[0061] The PLC controller of electrical system 4 supports multiple parameter presets. It can preset different transmission frequencies and shock wave intensities according to the icing conditions of different parts of the tower to achieve automated de-icing operations. The backup lithium battery pack has a capacity of 120Ah and an emergency operation time of 3 hours, which can meet the needs of long-term tower de-icing operations.

[0062] The chassis 5 features a reinforced design, with the bottom anti-slip and wear-resistant pad thickness increased to 20mm. The rotating mechanism has a power of 2.0kW, which makes the equipment rotate more smoothly and can cope with operation scenarios with tall iron towers and wide icing areas.

[0063] The heating system 6 uses multiple sets of electric heating plates 61 installed in a distributed manner, covering the detonation chamber 1 and key parts of the gas supply pipeline, ensuring uniform heating and that all components of the equipment can work normally in low-temperature environments.

[0064] The energy-concentrating air cannon underwent de-icing tests on a power grid tower in a mountainous area. The ice thickness on the tower's crossarms and body was 15-20 mm, and the ambient temperature was -12℃. By pre-setting de-icing parameters, the device automatically adjusted its angle and triggered firing. After multiple firings, the ice layer on the surface of the tower components was completely removed. The device operated stably without any structural deformation or malfunction, effectively solving the problem of difficult ice removal from power towers in mountainous areas.

[0065] Test results

[0066] The shaped charge air cannon launching system of the present invention underwent a preliminary test at a power grid base in November 2024. The test included multiple indicators such as equipment start-up performance, gas supply stability, shock wave intensity, and angle adjustment accuracy. All indicators met the design requirements, the equipment operated stably, and there were no malfunctions.

[0067] In December 2024, a special de-icing test was conducted at another power grid base targeting key power grid equipment. The test subjects included transmission lines, insulators, and tower components. The test environment temperature ranged from -15℃ to -5℃, with ice thicknesses ranging from 5 to 20 mm. During the test, the equipment's automatic setup and ignition were precise and reliable. The launch angle and frequency could be flexibly adjusted via remote control. A single launch could clear ice within a range of 30-50 meters, achieving a de-icing efficiency more than 80 times higher than traditional manual de-icing.

[0068] Testing revealed no damage to the surface of the power grid equipment after de-icing, the insulation performance of the insulators remained unaffected, and the resistance value of the transmission lines was normal. The equipment demonstrated excellent low-temperature adaptability during the test; the heating system effectively prevented gas liquefaction and pipe icing; and the emergency protection module quickly cut off the power supply and issued an alarm in the event of an abnormal gas pressure, ensuring test safety.

[0069] Test results show that the de-icing effect of the energy-concentrating air cannon of the present invention meets the user's needs, and all performance indicators are superior to existing de-icing equipment, making it suitable for large-scale application in power grid freezing rain de-icing operations.

[0070] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A shaped air cannon to clear the effects of freezing rain on the safety of an electrical grid, characterized in that: The utility model relates to a kind of air cannon, including detonation chamber, launch tube, gas supply system, electrical system and chassis, the detonation chamber, launch tube, gas supply system and electrical system are all mounted on chassis, the detonation chamber one end is sealedly connected with launch tube, the other end is communicated with gas supply system, the electrical system is electrically connected with gas supply system, detonation chamber respectively, for controlling gas supply, detonation trigger and equipment state monitoring.

2. The shaped air cannon for removing the safety impact of freezing rain on the power grid according to claim 1, characterized in that: The detonation chamber is a circular can structure, made of high-strength alloy steel material, the inner wall of the tank is provided with wear-resistant anticorrosive coating, the detonation chamber is provided with gas inlet and gas outlet at both ends, the gas inlet is sealedly connected with the gas outlet end of the gas supply system, the gas outlet is fixedly connected with the launch tube through flange, and the detonation chamber is provided with an ignition device, which is electrically connected with the electrical system.

3. The shaped air cannon for removing the safety impact of freezing rain on the power grid according to claim 1, characterized in that: The launch tube is designed in the form of a horn mouth, including a connection section, a contraction section and a diffusion section connected in turn, the connection section is sealedly connected with the gas outlet of the detonation chamber, the inner diameter of the contraction section gradually decreases from the end close to the connection section to the end close to the diffusion section, the inner diameter of the diffusion section gradually increases from the end close to the contraction section to the outside, the launch tube is made of lightweight high-strength aluminum alloy material, and the inner wall is polished, and its length and caliber can be customized according to the deicing needs of different key equipment of the power grid.

4. The shaped air cannon to clear the effects of freezing rain on the safety of the power grid according to claim 1, characterized in that: The gas supply system includes a compressor, a propane tank, a mixed gas chamber, a flow control valve and a pressure sensor, the gas outlet ends of the compressor and the propane tank are communicated with the mixed gas chamber through pipelines, and the two gas supply pipelines are provided with flow control valves and pressure sensors, and the gas outlet end of the mixed gas chamber is communicated with the gas inlet of the detonation chamber.

5. The shaped air cannon to clear the effects of freezing rain on the safety of the power grid according to claim 1, characterized in that: The electrical system includes a power supply system and a control system, the power supply system adopts AC 380V power supply mode, including a transformer, a voltage stabilizer and a backup power supply, and the backup power supply is a lithium battery pack; the control system adopts wireless remote control, including a controller, a remote control receiver, a state display module and a plurality of control switches, and the controller is electrically connected with the flow control valve, the pressure sensor, the ignition device and the compressor.

6. The shaped air cannon to clear the effects of freezing rain on the safety of the electrical grid of claim 1, wherein: The chassis is welded by steel plate, and is provided with an anti-skid wear-resistant pad at the bottom, and is provided with a seat ring and a connecting bolt, and the shaped charge air gun is fixedly connected with the seat ring through the connecting bolt, and the chassis is further provided with a rotating mechanism and a braking mechanism, and the rotating mechanism includes a rotating motor and a gear transmission assembly, and the rotating motor is electrically connected with the controller.

7. The shaped air cannon to clear the effects of freezing rain on the safety of the electrical grid of claim 2, wherein: The wall thickness of the detonation chamber is 10-15mm, and the internal volume is 0.5-1.2m³, which can withstand 0.8-1.2MPa of instantaneous pressure.

8. The shaped air cannon to clear the effects of freezing rain on the safety of the electrical grid of claim 3, wherein: The length of the connection section of the launch tube is 20-30cm, the taper angle of the contraction section is 30°-45°, the taper angle of the diffusion section is 60°-90°, and the maximum caliber of the horn mouth is 50-80cm.

9. The shaped air cannon to clear the effects of freezing rain on the safety of the electrical network according to claim 3, characterized in that: The output pressure of the compressor of the gas supply system is 0.8-1.0MPa, the working pressure of the propane tank is 1.0-1.5MPa, and the mixing ratio of air and propane gas in the mixed gas chamber is 10:1-15:

1.

10. The shaped air cannon to clear the effects of freezing rain on the safety of the electrical grid of claim 1, wherein: The heating system comprises an electric heating disc and a temperature sensor, the electric heating disc is installed on the outer wall of the detonation chamber and the pipeline of the gas supply system, and the temperature sensor is used for monitoring the temperature of the equipment; the electrical system is further provided with an emergency protection module, when the pressure sensor monitors that the gas pressure exceeds the preset threshold value or the temperature sensor monitors that the temperature of the equipment is abnormal, the emergency protection module automatically cuts off the power supply and sends an alarm signal.

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