A 750kv non-powered wind-driven insulator cleaning device

Abstract

This invention discloses a 750kV non-powered, wind-driven insulator cleaning device, including an insulator with an air inlet frame at its bottom. An impeller is rotatably mounted on the right side of the air inlet frame, a first gear is driven by the impeller, a cleaning brush is arranged around the outer periphery of the insulator and is driven by the first gear, an air jet frame is mounted on the side of the insulator, a second gear meshes with the first gear, and an air outlet pipe is located on the right side of the air jet frame. It also includes a dust collection component for adsorbing and scraping dust off the cleaning brush. This device utilizes natural wind power to drive the impeller to rotate, and the cleaning brush automatically cleans the surface of the insulator through gear transmission. Simultaneously, the dust generated during cleaning is collected and stored by the dust collection component, avoiding secondary pollution. This invention has a simple and compact structure, achieves automatic cleaning without an external power source, and is particularly suitable for the daily maintenance of power equipment in remote areas.

Description

Technical Field

[0001] This invention belongs to the field of power maintenance technology, specifically relating to a 750kV non-powered wind-driven insulator cleaning device. Background Technology

[0002] As a core hub infrastructure of my country's ultra-high voltage (UHV) backbone transmission network, the 750kV UHV substation primarily undertakes the core functions of large-capacity, cross-regional, and long-distance power transmission and voltage regulation. It is a crucial carrier for ensuring regional power supply and demand balance, safe and stable grid operation, and reliable power transmission. The overall operational stability, safety, and reliability of its equipment directly determine the power supply quality and resilience of the regional power grid, and have a decisive impact on the stable operation and maintenance of industrial and agricultural production, residential electricity consumption, and major power projects. Insulators are indispensable core insulation devices in UHV power systems, widely deployed in substation structures, transmission towers, and connections of various high-voltage live equipment. Their core function is to support and fix various high-voltage live conductors, effectively achieving electrical isolation between live parts and grounding structures, ensuring the insulation safety of high-voltage equipment and transmission lines, and preventing electrical faults such as leakage, discharge, and short circuits. They are fundamental key components for maintaining the insulation performance of UHV power systems and ensuring the safe operation of the power grid.

[0003] Because 750kV ultra-high voltage substations are mostly located in open-air environments, insulators are constantly exposed to complex outdoor conditions, continuously subjected to the alternating effects of wind and sand erosion, dust accumulation, smog deposition, coastal salt spray corrosion, industrial dust adhesion, and severe weather and pollution such as rain, snow, condensation, and frost. During long-term service, various suspended pollutants, industrial impurities, sand particles, bird droppings, and other contaminants easily adhere to and accumulate layer by layer on the surface of the insulator skirts and inside the gaps, forming a stubborn layer of contaminants. With the accumulation of operating time, the contaminants on the insulator surface thicken and solidify, significantly reducing the surface insulation resistance and weakening flashover withstand performance. Under severe weather conditions such as humidity, fog, and rain, this can easily lead to serious power faults such as surface creepage, partial discharge, flashover, and even phase-to-phase short circuits. These faults can range from minor line tripping and power outages to major safety accidents such as equipment burnout and substation shutdowns, seriously threatening the operational stability and power supply reliability of the 750kV backbone power grid.

[0004] A search revealed that Chinese invention patent application number CN202011398571.7 discloses a substation insulator energized radial feeding cleaning device, robot, and method. The substation insulator energized radial feeding cleaning device includes an annular support with an open structure. The distance between the two endpoints of the annular support opening is greater than the diameter of the insulator. A first guide rail is mounted on the annular support; this first guide rail is a suspended guide rail on which at least two cleaning mechanisms are suspended. The cleaning mechanisms can move along the first guide rail in preset sections, allowing them to clean different radial positions of the insulator at the same height. However, because this device requires external power to perform the cleaning action, and the cleaning efficiency is low due to the single cleaning method, dust on the cleaning mechanisms can easily re-adhere to the insulator, making self-cleaning of the cleaning mechanisms impossible and inconvenient.

[0005] Therefore, it is necessary to design a 750kV substation insulator cleaning device that can perform self-cleaning while blowing around the insulator without a power source, and prevent dust from re-adhering to the insulator. Summary of the Invention

[0006] The purpose of this invention is to solve the problem that existing cleaning devices require external power to perform the cleaning action, and the efficiency of cleaning by a single method is low, resulting in dust on the cleaning mechanism re-adhering to the insulator and failing to achieve self-cleaning of the cleaning mechanism.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A 750kV non-powered wind-driven insulator cleaning device includes an insulator, an air inlet frame at the bottom of the insulator, an impeller rotatably located on the right side of the air inlet frame, a first gear drivingly connected to the impeller, a cleaning brush surrounding the outer periphery of the insulator and drivingly connected to the first gear, an air jet frame located on the side of the insulator, a second gear meshing with the first gear, an air outlet pipe located on the right side of the air jet frame, and a dust suction component for adsorbing and scraping dust off the cleaning brush.

[0009] The dust collection assembly includes an air suction pipe located in front of the air outlet pipe, a dust collection frame connected to the left side of the scraper, a storage bucket located on the lower left side of the dust collection frame, a sealing cap fixedly connected to the lower part of the storage bucket, and a filter element placed inside the storage bucket.

[0010] As a further description of the above technical solution: the first gear is an internal gear ring structure, the second gear is an external gear, the internal teeth of the second gear and the first gear mesh with each other, the cleaning brush is rotatably connected to the scraper, the scraper is fixed to the inner side wall of the dust collection frame, and the free end of the scraper slides in contact with the surface of the insulator.

[0011] As a further description of the above technical solution: the cleaning brush includes multiple annular brush bodies, which are evenly distributed along the axial direction of the insulator, and each annular brush body has flexible bristles on its inner side that are adapted to the contour of the insulator skirt.

[0012] As a further description of the above technical solution: the dust collection frame is a semi-enclosed frame structure with the opening facing the insulator, the scraper is fixed to the inner side wall of the dust collection frame, and the free end of the scraper slides in contact with the surface of the insulator.

[0013] As a further description of the above technical solution: the storage tank is a sealed cylindrical structure, the filter element is a cylindrical filter element, the top of the filter element is detachably connected to the sealing cover, and the air outlet of the suction pipe extends to the inside of the filter element.

[0014] As a further description of the above technical solution: the inner side of the middle part of the air outlet pipe is a Venturi tube structure, one end of the air outlet pipe is connected to the air outlet of the air inlet frame, and the other end of the air outlet pipe is connected to the top of the jet frame. When the impeller in the air inlet frame rotates, it can pressurize the external airflow and deliver it to the jet frame through the air outlet pipe.

[0015] As a further description of the above technical solution: a driven gear is fixedly connected to the bottom of the cleaning brush, and the driven gear meshes with the internal teeth of the first gear. When the first gear rotates, it can drive the cleaning brush to rotate synchronously around the axis of the insulator.

[0016] As a further description of the above technical solution: the air intake pipe is connected to the bottom of the sealing cap, the storage tank is a sealed cylindrical structure, the filter element is a cylindrical filter element, the top of the filter element is detachably connected to the sealing cap, and the air outlet end of the air intake pipe extends to the inside of the filter element.

[0017] As a further description of the above technical solution: the jet frame is a vertically arranged rod-shaped structure, and the jet frame has multiple jet holes along the axial direction facing the insulator.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] 1. This invention provides a 750kV non-powered wind-driven insulator cleaning device. When in use, the airflow enters the air inlet frame, driving the dust blowing component to rotate. At the same time, the airflow is sprayed towards the insulator to blow away dust. While the dust blowing component is in motion, it drives the cleaning component to rotate, brushing away impurities on the surface of the insulator and scraping off the dust attached to itself. This achieves the effect of self-cleaning while blowing around the insulator without a power source, preventing dust from re-adhering to the insulator.

[0020] 2. The present invention provides a 750kV non-powered wind-driven insulator cleaning device. When airflow enters the outlet pipe, negative pressure is generated through the internal Venturi tube structure, causing the dust collection frame to generate suction force to draw the dust scraped off the cleaning brush into the storage tank. The dust is filtered by the filter element. When the filter element needs to be replaced, the sealing cover can be turned open. This achieves the effect of adsorbing and collecting the dust scraped off the cleaning brush, preventing secondary dust adhesion, and facilitating the disassembly and replacement of the filter element.

[0021] 3. The present invention provides a 750kV non-powered wind-driven insulator cleaning device that relies entirely on natural wind energy to complete the entire process of mechanical transmission, high-pressure air jetting, and negative pressure dust collection. It requires no external power supply, battery, or motor drive components, completely avoiding the electrical safety hazards at high-voltage transmission sites. It is suitable for 750kV ultra-high-voltage transmission lines operating in outdoor, unattended scenarios without external power supply, and operates with zero energy consumption, significantly reducing the energy consumption cost of line operation and maintenance.

[0022] 4. The present invention provides a 750kV non-powered wind-driven insulator cleaning device that relies entirely on natural wind energy to complete the entire process of mechanical transmission, high-pressure air jetting, and negative pressure dust collection. It requires no external power supply, battery, or motor drive components, completely avoiding the electrical safety hazards at high-voltage transmission sites. It is suitable for 750kV ultra-high-voltage transmission lines operating in outdoor, unattended scenarios without external power supply, and operates with zero energy consumption, significantly reducing the energy consumption cost of line operation and maintenance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the air inlet frame and gear of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the cleaning brush and air jet frame of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the air outlet pipe and air intake pipe of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the scraper and storage tank of the present invention.

[0029] The diagram is marked as follows:

[0030] 1-Insulator, 2-Air inlet frame, 3-Impeller, 4-First gear, 5-Sweeping brush, 6-Air jet frame, 7-Second gear, 8-Air outlet pipe, 9-Suction pipe, 10-Scraper, 11-Dust collection frame, 12-Storage tank, 13-Sealing cover, 14-Filter element. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this invention. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] In this invention, terms such as "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "side," and "bottom," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention, nor should they be construed as limiting the invention. In this invention, terms such as "fixed," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of the above terms in this invention based on the specific circumstances, and they should not be construed as limiting the invention.

[0034] like Figures 1-5 As shown, this invention relates to a device that automatically cleans insulators using only natural wind power, without requiring external power. This device provides a clean and energy-efficient solution to the problem of insulators in transmission lines being exposed to the outdoors for extended periods and prone to dust accumulation leading to flashover.

[0035] See Figure 1 As shown, a 750kV non-powered wind-driven insulator cleaning device includes an insulator 1, an air inlet frame 2 at the bottom of the insulator 1, an impeller 3 rotatably located on the right side of the air inlet frame 2, a first gear 4 drivingly connected to the impeller 3, a cleaning brush 5 surrounding the outer periphery of the insulator 1 and drivingly connected to the first gear 4, an air jet frame 6 located on the side of the insulator 1, a second gear 7 meshing with the first gear 4, an air outlet pipe 8 located on the right side of the air jet frame 6, and a dust suction component for adsorbing and scraping dust off the cleaning brush 5.

[0036] A non-powered, wind-driven insulator cleaning device includes an insulator 1, an air inlet frame 2, an impeller 3, a first gear 4, a cleaning brush 5, an air jet frame 6, a second gear 7, an air outlet pipe 8, and a dust collection assembly. The insulator 1 is vertically mounted on the crossarm of the tower, with the air inlet frame 2 fixed to its bottom. The air inlet frame 2 is a hollow rectangular shell, with an air inlet on the left and an air outlet on the right. At the right side of the air inlet frame 2, i.e., at the air outlet, an impeller 3 is horizontally mounted, and the shaft of the impeller 3 is rotatably connected to the side wall of the air inlet frame 2. The first gear 4 is an internal gear ring structure, which is connected to the shaft of the impeller 3 via a coupling or key to achieve transmission; the rotation of the impeller 3 directly drives the first gear 4 to rotate synchronously.

[0037] The first gear 4 adopts an internal gear ring structure design, arranged around the periphery of the insulator 1, matching the insulator's installation structure and cleaning trajectory. A second gear 7, an external gear structure, is meshed inside the first gear 4, precisely meshing with the internal teeth of the first gear 4 to achieve power distribution. A cleaning brush 5 is arranged around the outer periphery of the insulator 1, with a driven gear fixedly mounted at its bottom. This driven gear meshes with the internal teeth of the first gear 4. When the impeller 3 drives the first gear 4 to rotate, it synchronously drives the cleaning brush 5 to rotate around the central axis of the insulator 1, achieving all-around cleaning of the outer wall of the insulator 1.

[0038] Specifically, an air inlet frame 2 is fixedly installed at the bottom of the insulator 1. The air inlet frame 2 is an open frame structure that can fully receive outdoor natural airflow and provide a power source for the entire device. An impeller 3 is rotatably mounted on the right side of the air inlet frame 2. The impeller 3 can rotate freely under the impact of natural airflow. The impeller 3 is connected to a first gear 4. The rotation of the impeller 3 provides power input for the subsequent cleaning and transmission structure, realizing powerless drive transmission. The first gear 4 adopts an internal gear ring structure and is arranged around the periphery of the insulator 1 to match the installation structure of the insulator and the cleaning trajectory.

[0039] Furthermore, the first gear 4 is an internal gear ring structure, the second gear 7 is an external gear, the second gear 7 meshes with the internal teeth of the first gear 4, the cleaning brush 5 is rotatably connected to the scraper 10, the scraper 10 is fixed to the inner side wall of the dust collection frame 11, and the free end of the scraper 10 slides in contact with the surface of the insulator 1.

[0040] The second gear 7 is an external gear that meshes with the external teeth of the first gear 4. When the first gear 4 rotates, the second gear 7 is driven to rotate. The shaft of the second gear 7 is connected to a control valve inside the jet frame 6 or the air outlet duct 8 via a transmission belt or chain, which is used to adjust the jet angle or flow rate of the jet frame 6, thereby optimizing the cleaning effect.

[0041] Specifically, a second gear 7 is meshed inside the first gear 4. The second gear 7 is an external gear structure that precisely meshes with the internal teeth of the first gear 4 to achieve power distribution. A cleaning brush 5 is arranged around the outer periphery of the insulator 1. A driven gear is fixedly mounted at the bottom of the cleaning brush 5. This driven gear meshes with the internal teeth of the first gear 4. When the impeller 3 drives the first gear 4 to rotate as a whole, it can synchronously drive the cleaning brush 5 to rotate around the central axis of the insulator 1, achieving all-round cleaning of the outer wall of the insulator 1. The cleaning brush 5 is arranged around the outer periphery of the insulator 1 and consists of multiple annular brush bodies evenly distributed along the axial direction of the insulator 1. The inner ring of each annular brush body is provided with flexible bristles. The contour of these bristles fits tightly against the surface of the insulator 1's skirt to ensure effective removal of accumulated dust. A driven gear is fixedly connected to the bottom of each annular brush body, and this driven gear meshes with the internal teeth of the first gear 4. When the first gear 4 rotates, the meshing of the internal teeth with the driven gear drives all the annular brushes to rotate synchronously around the axis of the insulator 1, thereby achieving brushing of the surface of the insulator.

[0042] Specifically, the cleaning brush 5 consists of multiple annular brush bodies, which are evenly and equidistantly distributed along the axial direction of the insulator 1, fully covering the skirt area of ​​the insulator 1. Simultaneously, the inner side of each annular brush body is equipped with flexible bristles adapted to the contour of the insulator 1's skirt. These flexible bristles are soft, wear-resistant, and have excellent insulation properties. They can closely conform to the concave and convex surfaces of the insulator skirt, thoroughly cleaning dust, dirt, bird droppings, lint, and other impurities adhering to the skirt gaps and outer walls, while also preventing hard bristles from scratching and damaging the insulator's glaze, thus ensuring the insulation performance and structural integrity of the 750kV high-voltage insulator.

[0043] The jet ejector 6 is located on the side of the insulator 1 and is a vertically mounted rod-like structure. Multiple jet ejection holes facing the insulator 1 are axially formed on the jet ejector 6. The bottom right side of the jet ejector 6 is connected to the exhaust pipe 8 via a pipe. One end of the exhaust pipe 8 is connected to the exhaust port of the air inlet frame 2, and the other end is connected to the top of the jet ejector 6. The inner middle section of the exhaust pipe 8 is machined into a Venturi tube structure. When airflow passes through, the throat of the Venturi tube generates high-speed airflow and negative pressure to drive the subsequent dust collection components.

[0044] In operation, when natural wind blows towards the air inlet frame 2, the airflow drives the impeller 3 to rotate. The impeller 3 drives the first gear 4 to rotate. The first gear 4, through the meshing of its internal teeth with the driven gear, drives the cleaning brush 5 to rotate around the insulator 1, brushing away surface dust; on the other hand, the first gear 4, through the meshing of its external teeth with the second gear 7, drives the control valve in the air outlet duct 8 to actuate, adjusting the airflow of the jet generator 6. Simultaneously, the pressurized airflow generated by the rotation of the impeller 3 enters the air outlet duct 8 from the air outlet of the air inlet frame 2.

[0045] In this embodiment, a jet frame 6 is vertically mounted on the side of the insulator 1. The jet frame 6 adopts a vertical rod-shaped structure design and is arranged to fit the side of the insulator 1. Multiple jet holes are evenly opened along the axial direction on the rod of the jet frame 6, facing the surface of the insulator 1, which can form a multi-angle, full-coverage jet dust removal airflow. An air outlet pipe 8 is connected to the top of the jet frame 6. One end of the air outlet pipe 8 is sealed and connected to the air outlet of the air inlet frame 2, and the other end is connected to the internal cavity of the jet frame 6. The inner middle part of the air outlet pipe 8 is set as a Venturi tube structure. The natural airflow introduced by the air inlet frame 2 is pressurized and accelerated by the Venturi effect. While the impeller 3 in the air inlet frame 2 is rotated by the wind, it can continuously introduce the external natural airflow into the air outlet pipe 8. After being pressurized by the Venturi structure, it is delivered to the interior of the jet frame 6. Finally, it is sprayed at high speed onto the surface of the insulator 1 through each jet hole, and the surface of the insulator after being cleaned by the cleaning brush 5 is swept by a second jet, blowing away residual fine dust and greatly improving the cleanliness.

[0046] In this embodiment, the rotating disk is rotatably connected to the air inlet frame 2, the first gear 4 meshes with each other, and the inner side of the middle part of the air outlet pipe 8 is a Venturi tube structure, which facilitates the generation of negative pressure for air intake. When the airflow enters the air inlet frame 2, the impeller 3 is driven to rotate by the airflow, the first gear 4 meshes with each other and moves, driving the jet frame 6 to rotate, and the rotating disk rotates accordingly, so that the gas passes through the air outlet pipe 8 and is sprayed out from the jet frame 6, blowing off the dust on the surface of the insulator 1.

[0047] The scraper 10 is rotatably connected to the cleaning brush 5; when the air jet frame 6 rotates, the cleaning brush 5 also rotates around the insulator 1, driving the second gear 7 to rotate. The second gear 7 meshes with each other, driving the cleaning brush 5 to rotate on the air jet frame 6, brushing off impurities on the surface of the insulator 1. While the cleaning brush 5 is rotating, it comes into contact with the scraper 10, and the scraper 10 scrapes off the dust attached to the cleaning brush 5, thus achieving self-cleaning.

[0048] The dust collection assembly includes an air suction pipe 9 located in front of the air outlet pipe 8, a dust collection frame 11 connected to the left side of the scraper 10, a storage tank 12 located on the lower left side of the dust collection frame 11, a sealing cover 13 fixedly connected to the lower part of the storage tank 12, and a filter element 14 placed inside the storage tank 12.

[0049] In this embodiment, the cleaning device also includes a dust collection assembly disposed on the cleaning component for adsorbing dust scraped off the cleaning brush 5. The dust collection assembly includes an air suction pipe 9 disposed in front of the air outlet pipe 8, a dust collection frame 11 disposed on the left side of the scraper 10, a storage tank 12 disposed on the lower left side of the dust collection frame 11, a sealing cap 13 threaded on the lower part of the storage tank 12, and a filter element 14 placed inside the storage tank 12. When the airflow enters the air outlet pipe 8, negative pressure is generated through the internal venturi tube structure, causing the dust collection frame 11 to generate suction to draw the dust scraped off the cleaning brush 5 into the storage tank 12. The dust is filtered by the filter element 14. When the filter element 14 needs to be replaced, the sealing cap 13 can be rotated open and the filter element 14 can be taken out. This can adsorb and collect the dust scraped off the cleaning brush 5, prevent secondary adhesion of dust, and facilitate the disassembly and replacement of the filter element 14.

[0050] In this embodiment, the front end of the suction pipe 9 communicates with the negative pressure area of ​​the Venturi tube structure of the exhaust pipe 8, and its rear end extends into the storage tank 12. The scraper 10 is fixedly connected to the inner wall of the dust collection frame 11, and its free end slides in contact with the surface of the insulator 1 to scrape the dust brushed off by the cleaning brush 5 away from the insulator surface. The dust collection frame 11 is a semi-enclosed frame structure with its opening facing the insulator 1, enclosing the scraper 10 and part of the cleaning brush 5 to form a relatively closed dust collection space. The storage tank 12 is a sealed cylinder installed on the lower left side of the dust collection frame 11 to store the collected dust. The sealing cap 13 is fixedly connected to the lower part of the storage tank 12 to seal the tank and facilitate dust cleaning. The filter element 14 is a cylindrical filter element placed inside the storage tank 12, and its top is detachably connected to the sealing cap 13. The air outlet of the suction pipe 9 extends to the inside of the filter element 14, allowing dust-laden gas to enter the filter element. After being filtered by the filter element, clean air is discharged from the outside of the filter element, while dust is trapped inside the bucket.

[0051] Specifically, the dust collection frame 11 in the dust collection assembly adopts a semi-enclosed frame structure with its opening facing the insulator 1. This semi-enclosed design can precisely wrap around the insulator cleaning area, effectively gathering the dust generated during cleaning and preventing dust overflow and diffusion. A scraper 10 is fixedly installed on the inner side wall of the dust collection frame 11. The free end of the scraper 10 slides in contact with the surface of the insulator 1, while the cleaning brush 5 is rotatably connected to the scraper 10. During the process of the cleaning brush 5 rotating around the insulator, the scraper 10 continuously scrapes away stubborn dust and clumps of dirt attached to the bristles of the cleaning brush 5, preventing the bristles from accumulating dust and clumping, which would reduce the cleaning effect. This achieves real-time self-cleaning of the cleaning brush and ensures the stability of long-term cleaning operations.

[0052] The suction pipe 9 is fixedly installed on the front side of the exhaust pipe 8. Relying on the negative pressure environment created by the high-speed airflow of the exhaust pipe 8, it provides negative pressure suction for vacuuming operations, eliminating the need for an additional negative pressure fan and continuing the advantage of the device's powerless design. A storage bin 12 is fixedly connected to the lower left side of the vacuum frame 11. The storage bin 12 is a sealed cylindrical structure, allowing for the airtight storage of dust and impurities to prevent leakage. A removable sealing cap 13 is fixedly fitted to the bottom of the storage bin 12, ensuring a tight seal between the cap 13 and the port of the storage bin 12, guaranteeing the overall airtightness of the negative pressure vacuuming environment.

[0053] Inside the storage tank 12 is a cylindrical filter element 14. The filter element 14 is made of high-precision insulating filter material, suitable for high-voltage equipment environments. The top of the filter element 14 is connected to the sealing cover 13 by a detachable plug-in or snap-fit ​​connection, facilitating the removal, replacement, maintenance, and cleaning of the filter element later. The air outlet of the suction pipe 9 passes through the sealing cover 13 and extends to the inner center of the filter element 14. During operation, under the negative pressure of the air outlet pipe 8, the suction pipe 9 draws the dust gathered by the dust collection frame 11 and the impurities scraped off by the scraper 10 into the storage tank 12. After the airflow is filtered and purified by the filter element 14, clean air is discharged, while dust and solid impurities are intercepted and retained inside the storage tank 12, completing the dust adsorption and collection operation.

[0054] In this embodiment, when the airflow passes through the Venturi tube in the middle of the air outlet duct 8, it generates a high-speed airflow and a local negative pressure. The high-speed airflow is ejected from the jet holes of the jet frame 6, sweeping the surface of the insulator 1 and assisting the cleaning brush 5 in its operation. The negative pressure generated by the Venturi tube draws the dust-laden air from the dust collection frame 11 into the storage tank 12 through the suction pipe 9. The dust-laden air enters the inside of the filter element 14, and after filtration, clean air escapes from the outside of the filter element, while the dust is retained in the storage tank 12, thereby achieving dust collection and preventing secondary pollution.

[0055] The device operates as follows: It relies solely on outdoor natural wind energy as its power source, requiring no external electrical power, hydraulic power, or manual assistance. It can autonomously start and stop operating in complex outdoor wind environments. During daily operation, outdoor natural wind continuously flows into the open air intake frame 2 at the bottom of the insulator 1. The air intake frame's wind-gathering structure concentrates the airflow, forming a stable directional wind field that impacts the impeller 3 mounted inside the frame, driving it to rotate continuously at a uniform speed. Simultaneously, the impeller 3 drives the first gear 4, which is connected to it, to rotate. The internal gear ring transmission structure of the first gear 4 achieves stable power distribution. On one hand, the first gear 4 precisely meshes with the driven gear at the bottom of the cleaning brush 5 through its internal teeth, smoothly transmitting rotational power to multiple sets of annular brushes. This drives the multiple sets of annular cleaning brushes 5 to rotate axially around the central axis of the insulator 1, conforming to the overall contour of the insulator. The flexible bristles on the inner side of the cleaning brush 5, adapted to the contour of the insulator skirt, can closely conform to the curved surface, gaps, and side walls of the insulator skirt, areas prone to dirt accumulation. This allows for comprehensive, thorough mechanical stripping and cleaning of dust, lint, mud, bird droppings, and clumps of dirt adhering to the insulator surface, completely removing stubborn dirt without causing wear or damage. Furthermore, the flexible bristles will not cause abrasion or impact damage to the insulator's glaze, effectively protecting the structural integrity and insulation performance of the 750kV high-voltage insulator. On the other hand, while the air inlet frame 2 completes the air collection and blade drive operation, the continuously collected natural airflow can be stably introduced into the outlet duct 8. Utilizing the special structure of the Venturi tube in the middle of the outlet duct 8, the flowing natural airflow is throttled, pressurized, accelerated, and its noise reduced, significantly increasing the airflow jet pressure and velocity. The pressurized high-speed airflow is continuously delivered to the internal cavity of the vertically arranged jet frame 6, and finally ejected at high speed through multiple sets of jet holes evenly distributed axially and directed toward the insulator 1, forming a high-pressure air curtain with multiple angles and full coverage. This air curtain performs a secondary fine jet cleaning of the insulator surface after mechanical cleaning by the cleaning brush 5, which can efficiently remove fine dust and loose particulate impurities remaining on the insulator surface and in the gaps of the sheds, making up for the minor blind spots of mechanical cleaning and further improving the overall cleanliness of the insulator.

[0056] During the simultaneous overall cleaning and air jetting operation, the dust collection components work in tandem to achieve real-time collection of cleaning dust and prevent secondary pollution. The free end of the scraper 10, fixed to the inner wall of the dust collection frame 11, always maintains a sliding contact with the surface of the insulator 1. During the dynamic process of the cleaning brush 5 rotating around the insulator, the scraper 10 continuously and precisely scrapes away the accumulated dust and clumps of dirt trapped and attached in the gaps between the bristles of the cleaning brush 5, preventing the bristles from hardening and caking due to long-term dust accumulation. This achieves real-time self-cleaning of the cleaning brush 5, ensuring that the cleaning brush always maintains good cleaning performance and effectively improving the stability and cleaning uniformity of the device during long-term continuous operation. At the same time, the rapid flow of high-speed airflow inside the exhaust pipe 8 creates a stable negative pressure zone at the front of the exhaust pipe, providing continuous negative pressure adsorption power for the suction pipe 9. No additional negative pressure generating equipment such as fans is required, continuing the core advantages of the device being power-free and energy-free.

[0057] Negative pressure suction is transmitted through the suction pipe 9 to the semi-enclosed dust collection frame 11. Relying on the gathering structure of the dust collection frame 11 surrounding the insulator cleaning area, various dust and solid impurities removed by mechanical sweeping, air jet cleaning, and scraping are comprehensively collected, preventing dust from scattering, overflowing, and re-adhering to the insulator surface. Subsequently, the airflow mixed with impurities is rapidly drawn into the storage tank 12 under negative pressure. After being discharged through the suction pipe 9 extending into the filter element 14, the airflow undergoes layered filtration and purification through the cylindrical high-precision filter element 14. Fine dust and solid impurities are completely intercepted and retained inside the sealed storage tank 12, while the filtered clean air is discharged normally. The entire process achieves integrated operation of sweeping, blowing, dust collection, and dirt collection. The entire workflow is driven entirely by natural wind power, requiring no electricity consumption or real-time human intervention. It enables 24 / 7 autonomous cleaning of 750kV high-voltage transmission line insulators, perfectly adapting to the unattended, long-term outdoor operation requirements of high-voltage transmission equipment.

[0058] After long-term operation, staff can perform simple maintenance on the dust collection components periodically based on the amount of dirt accumulated on site and the usage cycle. When the dust and impurities accumulated inside the storage tank 12 reach their capacity limit, or when the filter element 14 becomes clogged, its filtration performance declines, or its negative pressure suction weakens after long-term filtration, there is no need to disassemble the entire device structure. Simply remove the sealing cap 13 at the bottom of the storage tank 12 to easily remove the internal cylindrical filter element 14. Clean the dust and impurities adhering to the surface of the filter element. Aging or ineffective filter elements can be directly replaced. At the same time, quickly empty all kinds of solid dirt and impurities accumulated inside the storage tank 12. After maintenance, reinstall the filter element 14 and tighten the sealing cap 13 again to ensure the overall sealing of the storage tank 12 and the negative pressure dust collection effect. The device can then quickly return to normal operation. The overall maintenance operation is simple and convenient, time-saving, and does not require professional high-altitude equipment or professional maintenance personnel. It greatly reduces the labor cost, equipment cost and operation risk of cleaning and maintenance of 750kV high-voltage insulators, effectively reduces the workload of line maintenance, and has excellent practical value and promotion potential.

[0059] This invention utilizes natural wind as its sole power source, requiring no external power supply, making it suitable for power equipment maintenance in remote areas or high-altitude environments. The cleaning brush consists of multiple annular brush bodies evenly distributed along the insulator's axial direction. Each annular brush body has flexible bristles on its inner side that conform to the contour of the insulator's skirts, adapting to different insulator structures. The air jet frame is a vertically positioned rod-like structure with multiple air jet holes along its axial direction facing the insulator, allowing airflow to cover the entire insulator surface, achieving dual cleaning in conjunction with the cleaning brush.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention 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; and these 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 the present invention.

Claims

1. A 750kV non-powered wind-driven insulator cleaning device, comprising an insulator (1), characterized in that, The insulator (1) has an air inlet frame (2) at its bottom. The impeller (3) is rotatably located on the right side of the air inlet frame (2). The first gear (4) is connected to the impeller (3) in a transmission. The cleaning brush (5) is arranged around the outer periphery of the insulator (1) and is connected to the first gear (4) in a transmission. The jet frame (6) is located on the side of the insulator (1). The second gear (7) meshes with the first gear (4) in a transmission. The air outlet pipe (8) is located on the right side of the jet frame (6). The insulator also includes a dust collection component for adsorbing and scraping dust off the cleaning brush (5).

2. The 750kV non-powered wind-driven insulator cleaning device according to claim 1, characterized in that, The dust collection assembly includes an air suction pipe (9) located in front of the air outlet pipe (8), a dust collection frame (11) connected to the left side of the scraper (10), a storage tank (12) located on the lower left side of the dust collection frame (11), a sealing cap (13) fixedly connected to the lower part of the storage tank (12), and a filter element (14) placed inside the storage tank (12).

3. The non-powered, wind-driven insulator cleaning device according to claim 1, characterized in that, The first gear (4) is an internal gear ring structure, the second gear (7) is an external gear, the second gear (7) meshes with the internal teeth of the first gear (4), the cleaning brush (5) is rotatably connected to the scraper (10), the scraper (10) is fixed to the inner side wall of the dust collection frame (11), and the free end of the scraper (10) slides in contact with the surface of the insulator (1).

4. A 750kV non-powered wind-driven insulator cleaning device according to claim 3, characterized in that, The cleaning brush (5) includes multiple annular brush bodies, which are evenly distributed along the axial direction of the insulator (1), and each annular brush body has flexible bristles on its inner side that are adapted to the outline of the insulator (1) skirt.

5. A 750kV non-powered wind-driven insulator cleaning device according to claim 3, characterized in that, The dust collection frame (11) is a semi-enclosed frame structure with its opening facing the insulator (1). The scraper (10) is fixed to the inner side wall of the dust collection frame (11), and the free end of the scraper (10) slides in contact with the surface of the insulator (1).

6. A 750kV non-powered wind-driven insulator cleaning device according to claim 2, characterized in that, The storage tank (12) is a sealed cylindrical structure, the filter element (14) is a cylindrical filter element, the top of the filter element (14) is detachably connected to the sealing cover (13), and the air outlet of the suction pipe (9) extends to the inside of the filter element (14).

7. A 750kV non-powered wind-driven insulator cleaning device according to claim 2, characterized in that, The inner side of the middle part of the air outlet pipe (8) is a Venturi tube structure. One end of the air outlet pipe (8) is connected to the air outlet of the air inlet frame (2), and the other end of the air outlet pipe (8) is connected to the top of the jet frame (6). When the impeller (3) in the air inlet frame (2) rotates, it can pressurize the external airflow and deliver it to the jet frame (6) through the air outlet pipe (8).

8. A 750kV non-powered wind-driven insulator cleaning device according to claim 4, characterized in that, The bottom of the cleaning brush (5) is fixedly connected to a driven gear, which meshes with the internal teeth of the first gear (4). When the first gear (4) rotates, it can drive the cleaning brush (5) to rotate synchronously around the axis of the insulator (1).

9. A 750kV non-powered wind-driven insulator cleaning device according to claim 2, characterized in that, The bottom of the suction pipe (9) and the sealing cap (13) are connected. The storage tank (12) is a sealed cylindrical structure. The filter element (14) is a cylindrical filter element. The top of the filter element (14) is detachably connected to the sealing cap (13). The air outlet of the suction pipe (9) extends to the inside of the filter element (14).

10. A 750kV non-powered wind-driven insulator cleaning device according to claim 1, characterized in that, The jet frame (6) is a vertically arranged rod-shaped structure, and multiple jet holes facing the insulator (1) are opened along the axial direction on the jet frame (6).

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