Low-temperature rescue cleaning device for overhead line system insulator

Abstract

The utility model discloses a low-temperature rescue cleaning device for an overhead line system insulator, which is characterized in that a rail car capable of running on a railway track is used as a bearing platform, a rail car A and a rail car B are connected into a whole, the end part of the rail car A is a control room, and a flushing operation platform is close to the control room; a hot air system and a flushing water cannon are borne on the flushing operation platform, and handrails are arranged around the flushing operation platform; a pump station is arranged at the end part of the rail car B, and a water tank is arranged in the middle of the rail car B; and a generator set is arranged at the other end part of the rail car B and supplies power to the whole device. According to the utility model, the adaptability and safety of water washing operation in a low-temperature environment below zero DEG C are improved, and a new scheme is provided for efficient, safe and reliable emergency cleaning operation of the contact network insulator in the low-temperature environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-temperature emergency rescue and cleaning of railway catenary insulators, and particularly relates to a low-temperature emergency rescue and cleaning device for catenary insulators. Background Technique

[0002] Dust, dirt and other impurities are likely to accumulate on the surface of insulators. These impurities will form a contaminated layer after getting wet, increasing the surface conductance and causing a sharp increase in leakage current. In places with a large current density, such as near the iron cap, local dirt on the surface generates heat, which may cause flashover discharge of the insulator, and then lead to a power outage accident. Therefore, cleaning the surface of the insulator can significantly reduce this risk. The insulator cleaning operation is generally carried out in spring and autumn, and water flushing operation is rarely carried out in winter. Because in a low-temperature environment, especially after the temperature drops in winter and the temperature difference between morning and evening is large, the catenary parameters will change accordingly, and dirty insulators are prone to flashover, further increasing the risk of power supply failures. Through regular cleaning, the occurrence of such problems can be effectively reduced.

[0003] There is also a need to clean insulators in winter. At present, it is challenging to clean insulators in a low-temperature environment. Especially when the ambient temperature is below zero degrees, the currently adopted methods mainly include manual cleaning, dry ice cleaning, and water flushing. The manual cleaning method has low cost, simple operation, and strong pertinency. Human hands can thoroughly distinguish stains, eliminate surface stains such as dust and oil stains on the insulators, which helps to improve the cleaning effect. However, the manual cleaning method has problems such as low efficiency, high labor intensity, and great safety hazards. In an environment below zero degrees, workers need to work outdoors for a long time, with high work intensity and prone to safety hazards. For example, when workers hold a steel wool ball or abrasive cloth to clean the surface of the insulator, there are risks of frostbite or other safety problems caused by the cold weather. When an emergency that needs to be dealt with immediately occurs, the cleaning speed of workers is slow, affecting the opening time of the station or railway line. The dry ice cleaning method has good cleaning effect and is suitable for low-temperature environments. It can carry out cleaning operations in an environment below zero degrees. However, dry ice cleaning is not suitable for long distances and must be very close to the cleaning target, with relatively low efficiency. The dry ice cleaning technology requires professional equipment and operation skills, and the operation difficulty is relatively large. Compared with other cleaning methods, the cost of dry ice cleaning is relatively high. The currently widely used water flushing method can quickly flush the insulators by controlling the water flow and pressure, with high cleaning efficiency and simple operation. However, it has high requirements for water, and has strict requirements for the water pressure, flow rate, and resistance value. If the conditions are not met, it may lead to poor cleaning effect or equipment damage. At the same time, in an environment below zero degrees, water may freeze. After the water freezes and adheres to the surface of the insulator, it will not only seriously affect the cleaning effect, but also may cause damage to the equipment.

[0004] When cleaning contact network insulators in sub-zero temperatures, manual cleaning is inexpensive but inefficient, presenting significant safety risks. Dry ice cleaning is effective but inefficient, difficult, and expensive. Water flushing is more efficient but requires a high water content, and freezing can have adverse effects. Each of these cleaning methods has its advantages and disadvantages, but none is suitable for safe and efficient insulator cleaning in sub-zero temperatures. When contact network insulators flash over in low-temperature environments, they must be cleaned quickly and safely to eliminate the danger. Existing cleaning technologies need to be optimized to meet the demands of low-temperature environments. Utility Model Content

[0005] In order to solve the shortcomings of the existing railway contact network insulator cleaning technology when used in a low-temperature environment, the utility model provides a contact network insulator low-temperature emergency cleaning device.

[0006] The present invention provides a low-temperature emergency cleaning device for contact network insulators, comprising a control room, a hot air system, a flushing water monitor, a flushing operation platform, a pump station, a water tank, water pipes, and a generator set, mounted on two railcars. Railcar A and railcar B are connected as a whole. The control room is located at one end of railcar A, adjacent to which is the flushing operation platform, which carries the hot air system and the flushing water monitor and is surrounded by railings. The pump station is located at the other end of railcar B, with the water tank located in the middle. The pump station is connected to the water tank and the flushing water monitor via water pipes. The generator set is located at the other end of railcar B, providing power for the entire device.

[0007] Furthermore, the hot air system includes a lifting mechanism, an operating platform, a handrail, a high-power hot air blower, a hot air gun support, a horizontal rotary joint, an operating handle, a pitch rotary joint, and a hot air gun barrel. The lifting mechanism is mounted on the flushing operating platform, with the operating platform located on top of the lifting mechanism. The handrail is installed around the operating platform. The high-power hot air blower on the operating platform is connected to the hot air gun support via a rigid pipe at the shortest distance. The hot air gun support is equipped with a horizontal rotary joint and a pitch rotary joint. The hot air gun barrel and the operating handle are installed on top of the pitch rotary joint.

[0008] Furthermore, the extension length of the hot air gun tube is adjustable.

[0009] Furthermore, flushing the water monitor includes flushing water monitor A and flushing water monitor B.

[0010] Furthermore, the water tank adopts a double-layer insulation structure.

[0011] Furthermore, a heating tape is wound around the outer wall of the water pipe, and a heat-insulating material is wrapped around the outside of the heating tape.

[0012] The beneficial technical effects of the utility model are:

[0013] (1) Aiming at the problem that the catenary insulator cannot be quickly and safely cleaned in a low-temperature environment below zero degrees Celsius, and the catenary fault danger cannot be eliminated in time, the present utility model proposes a technical method of non-powered water flushing + hot air blowing and sweeping, which realizes efficient and safe cleaning operation of the catenary insulator in a low-temperature environment, and provides a new solution for insulator cleaning operation in winter. During the non-powered water flushing operation, the flushing pressure can be appropriately increased to flush the dirt on the surface of the insulator clean, and even break the thin ice attached to the surface of the insulator, achieving a good flushing effect. After the flushing operation is completed, the hot air blowing and sweeping operation is immediately carried out to blow away the water attached to the surface of the insulator during the flushing operation in time, promote the evaporation speed of water vapor, accelerate the drying speed of the insulator surface, and quickly improve the insulation effect of the insulator to the state when it is dry. The traditional water flushing operation can be carried out live without power-off of the catenary, but in a low-temperature environment below zero degrees Celsius, there may be ice covering or icicles on the catenary, and the safety of live operation is reduced. Therefore, the present utility model sets the water flushing operation to be carried out when the catenary is powered off to ensure safety. At the same time, since the catenary is not powered during the flushing operation, the requirement for the quality of the flushing water is reduced. It is no longer necessary to forcibly require that the flushing water has a high resistivity. At the same time, the water attached to the surface of the insulator after flushing will be promptly blown and even evaporated, and the water quality will no longer affect the catenary system, greatly reducing the requirement for flushing water and reducing the cost of water flushing operation.

[0014] (2) The hot air blowing and sweeping device of the present utility model is placed on a liftable working platform, and the height can be adjusted according to different working conditions. When traveling at high speed on the line with the rail vehicle, the working platform is in the low position, which does not affect the driving safety. When carrying out low-speed flushing operation, the working platform is in the high position, so that the distance between the hot air gun and the insulator is relatively close, ensuring a good blowing and sweeping effect. The hot air blowing and sweeping device completes the change of the air duct direction through a rotary joint, and the structure is simple. The operator only needs to turn the handle to complete the angle adjustment of the hot air gun and complete the alignment of the hot air gun and the insulator, which is convenient to operate. This simple structure of the hot air blowing and sweeping device leaves enough operating space for the operator on the working platform, and the convenient operation method enables the operator to easily align and track the insulator, providing a guarantee for the good blowing and sweeping effect of the hot air.

[0015] (3) The effect of the hot air blowing device is affected by many factors such as distance, temperature, and wind speed. The utility model can make the end of the hot air gun and the surface of the insulator at a relatively fixed distance by adjusting the height of the lifting platform of the hot air blowing device and the extension length of the hot air gun barrel. By adjusting the wind speed, the hot air can maintain sufficient blowing force on the insulator, effectively clean the water attached to the surface of the insulator, and complete the preliminary drying of the insulator surface. At the same time, different temperature differences can be set according to the current ambient temperature, so that the temperature of the hot air can meet the requirements of efficient cleaning of retained water and rapid evaporation of water while avoiding affecting the structure of the insulator itself, thereby ensuring the safety of the contact network during the flushing operation.

[0016] (4) When performing water flushing operations in a low-temperature environment below zero degrees, preventing the flushing water from freezing is a major problem. The utility model adopts different anti-freezing measures for the water in the water tank and the water in the water pipe, ensuring the safety of the flushing water while saving energy to the greatest extent. According to the characteristics of the large volume of the water tank and the slow freezing speed, a double-layer insulated water tank is adopted to slow down the heat exchange speed between the water in the water tank and the external environment, so that the water in the water tank will not freeze during the time period of a flushing operation. Due to the small diameter of the water tank and the situation that the water does not flow for a short time, heating with heating tape and heat insulation materials are adopted to keep the temperature in the pipe above zero degrees at all times. The water in the large-volume water tank adopts a mechanical structure to slow down the freezing speed, and the water in the small-volume water pipe adopts a heating method to ensure that it does not freeze. Through these two methods, the minimum energy is used and the simpler structure is used to ensure normal water supply in a low-temperature environment below zero degrees. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of the low-temperature emergency cleaning device for contact network insulators.

[0018] Figure 2 This is a structural diagram of the flushing operation platform of the utility model.

[0019] Figure 3 This is a schematic diagram of the hot air system structure of the utility model.

[0020] Figure 4 This is a schematic diagram of the pipeline heating structure of the utility model.

[0021] In the figure: 2 - control room; 3 - hot air system; 31 - lifting mechanism; 32 - working platform; 33 - railing; 34 - high-power hot air blower; 35 - hot air gun support seat; 36 - horizontal rotary joint; 37 - operating handle; 38 - pitching rotary joint; 39 - hot air gun barrel; 41 - flushing water cannon A; 42 - flushing water cannon B; 5 - flushing working platform; 6 - pumping station; 7 - water tank; 8 - water pipe line; 81 - pipeline; 82 - tracing heating tape; 83 - heat insulation material; 9 - generating set; 10 - insulator; 11 - rail car A; 12 - rail car B. Detailed implementation mode

[0022] The following further elaborates on the present utility model in detail in conjunction with the accompanying drawings and specific implementation methods.

[0023] A catenary insulator low-temperature emergency cleaning device of the present utility model, as Figure 1 shown, includes a control room 2, a hot air system 3, a flushing water cannon, a flushing working platform 5, a pumping station 6, a water tank 7, a water pipe line 8, and a generating set 9 installed on two rail cars. Rail car A 11 and rail car B 12 are connected as a whole to provide an installation platform for the cleaning device and can run on the railway under the drive of a tractor. The end of rail car A 11 is the control room 2, which is the control center of the entire cleaning device and also the rest room for operators. Adjacent to the control room 2 is the flushing working platform 5, on which the hot air system 3 and the flushing water cannon are carried. There are railings around the flushing working platform 5, and operators can complete the water flushing operation on the flushing working platform 5. The end of rail car B 12 is the pumping station 6, and the middle part is the water tank 7. The water tank 7 adopts a double-layer heat insulation structure, which can effectively delay the freezing speed of the water inside it in a low-temperature environment below zero degrees Celsius and effectively reduce the energy consumption required to keep a large amount of water from freezing in a low-temperature environment. The pumping station 6 is connected to the water tank 7 and the flushing water cannon through the water pipe line 8, and the pumping station 6 extracts the water in the water tank 7 to provide a high-pressure water jet for water flushing. The other end of rail car B 12 is the generating set 9, and the generating set 9 provides power for the entire device.

[0024] As Figure 2As shown, within the railing area of the flushing operation platform 5, there are placed a flushing water cannon 41 and a flushing water cannon 42. When the insulator 10 enters the effective flushing range of the flushing water cannons, the operator controls the flushing water cannon 41 and the flushing water cannon 42 to use high-pressure water jets to perform a flushing operation on the insulator 10, cleaning the attachments on the surface of the insulator 10. At the same time, the thin ice formed on the surface of the insulator 10 due to low temperature can also be cleaned, completing the surface cleaning of the insulator 10. After the flushing is completed, a part of the water will remain on the insulator 10 and cannot be drained quickly. In a low-temperature environment, the water on the surface of the insulator 10 will condense into ice, seriously affecting the insulation performance of the insulator and endangering the safety of the entire catenary. Therefore, after the flushing operation is completed, immediately use the hot air system 3 to clean the water on the surface of the flushed insulator 10. As the rail vehicle 11 runs, the positional relationship between the hot air system 3 and the insulator 10 changes accordingly, enabling the hot air system 3 to blow from different angles, quickly drying the surface of the insulator 10 and ensuring the insulation performance of the insulator 10.

[0025] Further, as Figure 3 shown, the hot air system 3 includes a lifting mechanism 31, an operation platform 32, a railing 33, a high-power hot air blower 34, a hot air gun support 35, a horizontal rotary joint 36, an operation handle 37, a pitching rotary joint 38, and a hot air gun barrel 39. The lifting mechanism 31 is installed on the flushing operation platform 5. The top of the lifting mechanism 31 is the operation platform 32. The lifting mechanism 31 can perform a lifting movement to drive the operation platform 32 to adjust the height. When the rail vehicle 11 is running at normal high speed, the lifting mechanism 31 drives the operation platform 32 to the lowest position, not affecting the normal driving of the vehicle. When in the cleaning operation, the rail vehicle 11 runs at low speed, and the lifting mechanism 31 drives the operation platform 32 to the highest position to adjust the distance between the operation position and the target insulator. The railing 33 is installed around the operation platform 32 to protect the safety of the operator. The high-power hot air blower 34 on the operation platform 32 provides high-temperature and high-speed air, providing a high-temperature air jet for the hot air blowing operation. The high-temperature air generated by the high-power hot air blower 34 is connected to the hot air gun support 35 through a hard pipe at the shortest distance, reducing the energy loss in the pipeline. The horizontal rotary joint 36 is provided on the hot air gun support 35 and can rotate in the horizontal direction. The pitching rotary joint 38 is installed on the horizontal rotary joint 36 and can rotate in the pitching direction. Through the combined action of the horizontal rotary joint 36 and the pitching rotary joint 38, the operator can easily complete the operation of the hot air gun through the operation handle 37, align the hot air gun barrel 39 with the target insulator, use the high-temperature air jet to blow the water on the surface of the target insulator, and use the temperature difference to promote the evaporation speed of the surface moisture, achieving the purpose of quickly drying the surface of the insulator and improving the insulation effect of the insulator. The extended length of the hot air gun barrel 39 can be adjusted.

[0026] Further, asFigure 4 As shown, during the intervals between flushing operations, the water in the pipe does not flow. In a subzero temperature environment, it is very easy to freeze and cause pipe blockage. To prevent the water inside the pipe from freezing, a heating tape 82 is wrapped around the outer wall of the pipe 81. The heating tape 82 heats the pipe and its interior to maintain a temperature above zero. To reduce energy loss from the heating tape 82, an insulating material 83 is wrapped around the outside of the heating tape 82 so that the heat generated by the heating tape 82 is used to maintain the temperature of the water pipe to the greatest extent possible, thereby reducing energy consumption.

[0027] The low-temperature emergency cleaning device for contact network insulators provided by the utility model uses a rail car that can run on railway tracks as a carrying platform, and integrates relevant components of the low-temperature emergency cleaning device for insulators on the rail car. During the cleaning process of the insulators, the rail car is driven by a tractor to travel at a low and uniform speed on the track, and there is no need to stop for operation, so the cleaning operation is highly efficient. The insulators are cleaned in a low-temperature environment below zero degrees by combining water flushing with high-temperature wind blowing. When the contact network is not energized, the insulators are first flushed with high-pressure water. At the same time, a double-layer insulated water tank is used to keep the water in the water tank from freezing. A heating method is used to keep the water in the water pipe at a certain temperature to prevent freezing, thereby ensuring the smooth progress of the water flushing operation. In order to prevent water from remaining on the surface of the insulator after the water flushing operation, hot air is immediately used to blow the insulator to clean the water stuck on the surface. The hot air accelerates the evaporation of moisture on the insulator surface, making the insulator surface dry quickly, improving the insulation effect, and improving the adaptability and safety of water flushing operations in low-temperature environments below zero degrees, providing an efficient, safe and reliable solution for rapid rescue operations of contact network insulators in low-temperature environments.

[0028] The present invention utilizes a cleaning solution combining high-pressure water flushing and hot air purging. The high-pressure water jets generated by the high-pressure water flushing system clean the insulator surface, removing dirt adhered to the insulator surface with the water flow, even shattering and removing thin ice deposits. After the water flushing operation is completed, some water will inevitably adhere to the insulator surface. If left untreated, this water will freeze in subzero temperatures, forming ice deposits on the insulator surface, potentially causing insulator flashover discharges and serious pantograph-network failures. To maintain high efficiency in water flushing operations at low temperatures, hot air is used to purge the insulator surface. By regulating the temperature and speed of the hot air, the end of the hot air gun can be kept at a certain distance from the insulator surface for effective purging, ensuring efficient, non-stop cleaning operations. The present invention places the water cannon for water flushing and the hot air system for purging on a single railcar, minimizing the operating interval between them. This reduces the risk of water freezing on the insulator surface in low-temperature environments and ensures optimal water removal from the hot air purging. Since the contact network is not electrified during the operation, there is no need to have high requirements on the water used in the water flushing process. After the flushing is completed, the water remaining on the surface of the insulator will be immediately blown away or evaporated and will not adhere to the surface of the insulator, which greatly improves the safety and reliability of water flushing operations in low temperature environments.

[0029] The present invention utilizes a fully functional hot air blowing device. When a railcar carrying the complete device is operating normally on the line, the hot air blowing device must be kept away from the contact network above the line. However, during cleaning operations, the hot air blowing device must be close to the insulators. Therefore, a lifting platform is used to adjust the distance between the hot air blowing device and the insulators to meet the position requirements of the hot air blowing device under different operating conditions. A high-power hot air blower is used to generate high-temperature and high-speed air, and the hot air is directed to the vicinity of the insulator surface through a rigid pipe, reducing the energy loss of the hot air in the pipe. The air gun is fixed to the lifting platform by a support, and a rotary joint in both horizontal and pitch directions is used to provide the air gun with position adjustment function. The operator only needs to turn the operating handle to align the hot air gun with the insulator. Rotating the hot air gun requires little force, making it simple and easy to operate. As the railcar runs at low speeds, the positional relationship between the hot air gun and the insulator constantly changes, and the blowing angle also changes accordingly, allowing the hot air to blow across most of the insulator surface, ensuring the blowing effect.

[0030] The utility model adopts an automatic wind speed and temperature adjustment system. During the hot air blowing process, the blowing effect on the insulator surface is affected by many factors, such as the distance between the hot air gun and the insulator, the temperature of the hot air, the speed at which the hot air blows to the insulator surface, etc. In order to ensure that the hot air has a stable and safe blowing effect on the insulator surface, the system can set the optimal blowing wind speed, and the blowing distance is adjusted by the height of the lifting platform and the length of the hot air gun barrel. When the insulator to be blown is relatively far away, the height of the lifting platform can be raised, or the barrel of the hot air gun can be appropriately extended at the same time. When the insulator to be blown is relatively close, the height of the lifting platform can be lowered, or the barrel of the hot air gun can be appropriately retracted at the same time, so that the end of the hot air gun barrel maintains a relatively fixed distance from the insulator surface. When the distance is relatively fixed, the effective blowing force of the hot air can be ensured by adjusting the wind speed, and the water attached to the insulator surface can be effectively blown away. The system can also automatically adjust the temperature of the hot air according to the current ambient temperature, using hot air of appropriate temperature to blow onto the surface of the insulator, maintaining a relatively stable temperature difference, and ensuring that the temperature difference can be used to form a sufficient evaporation effect on the moisture on the surface of the insulator, prompting the insulator surface to dry quickly. At the same time, the appropriate temperature difference ensures that the hot air will not pose a risk to the mechanical structure of the insulator itself, nor will it have an adverse effect on the surrounding contact network components.

[0031] The utility model adopts simple and effective insulation measures. A large amount of water is needed during the water flushing process, and water will freeze in a low-temperature environment below zero degrees. Therefore, in order to solve the problem of water freezing during the water flushing process, different anti-freezing methods are adopted for the water in the water tank and the water in the water pipe. Water is added to the water tank before the flushing operation begins. When the water is added, the temperature of the water is above zero degrees. The amount of water in the water tank is large, and it takes a long time to freeze the water in the water tank into ice. Therefore, in order to keep the water in the water tank from freezing during the water flushing operation, a double-layer insulated water tank is used to form a cavity inside the water tank wall to slow down the speed of heat exchange. After the flushing operation of the day is completed, the water in the water tank is drained in time to ensure the safety of the water in the water tank in a low-temperature environment below zero degrees. The amount of water in the water pipe is small. During the intervals of water flushing operations, the water in the hydraulic system is not flowing. When the temperature is significantly below zero, local freezing may occur at locations with smaller pipe diameters. For this reason, heating devices are installed on all pipes, that is, heating tapes are installed on the outer walls of the water pipes. The heating tapes are powered by generator sets to provide heat sources for the pipes. In order to reduce heat loss, the outside of the heating tapes is wrapped with thermal insulation materials to enhance the heating effect of the heating device and reduce energy loss.

Claims

1. A catenary insulator low-temperature emergency cleaning device, characterized in that It includes a control room (2), a hot air system (3), a flushing water cannon, a flushing operation platform (5), a pump station (6), a water tank (7), a water pipe line (8), and a generator set (9) installed on two rail vehicles; Rail vehicle A (11) and rail vehicle B (12) are connected as a whole. The end of rail vehicle A (11) is the control room (2), and next to the control room (2) is the flushing operation platform (5). The hot air system (3) and the flushing water cannon are carried on the flushing operation platform (5), and there are railings around the flushing operation platform (5); The end of rail vehicle B (12) is the pump station (6), and the middle part is the water tank (7). The pump station (6) is connected to the water tank (7) and the flushing water cannon through the water pipe line (8); The other end of rail vehicle B (12) is the generator set (9), and the generator set (9) provides power for the entire device.

2. The low-temperature emergency cleaning device for catenary insulators according to claim 1, characterized in that, The hot air system (3) includes a lifting mechanism (31), an operation platform (32), railings (33), a high-power hot air blower (34), a hot air gun support seat (35), a horizontal rotary joint (36), an operation handle (37), a pitching rotary joint (38), and a hot air gun barrel (39); The lifting mechanism (31) is installed on the flushing operation platform (5). The top of the lifting mechanism (31) is the operation platform (32), and railings (33) are installed around the operation platform (32). The high-power hot air blower (34) on the operation platform (32) is connected to the hot air gun support seat (35) through a hard pipe at the shortest distance. A horizontal rotary joint (36) and a pitching rotary joint (38) are provided on the hot air gun support seat (35). The top of the pitching rotary joint (38) is installed with the hot air gun barrel (39) and the operation handle (37).

3. The low-temperature emergency cleaning device for catenary insulators according to claim 2, characterized in that, The extended length of the hot air gun barrel (39) is adjustable.

4. The low-temperature emergency cleaning device for catenary insulators according to claim 1, wherein, The flushing water cannon includes a flushing water cannon A (41) and a flushing water cannon B (42).

5. The cryogenic emergency cleaning device for catenary insulators according to claim 1, characterized in that, The water tank (7) adopts a double-layer heat insulation structure.

6. The cryogenic emergency cleaning device for catenary insulators according to claim 1, wherein, The water pipe line (8) winds a heat tracing tape (82) on the outer wall of the pipe (81), and an insulating material (83) is wrapped outside the heat tracing tape (82).

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