Modularized electric power inspection unmanned aerial vehicle capable of rapidly replacing hydrogen cylinders

Abstract

The invention relates to a modularized electric power inspection unmanned aerial vehicle capable of rapidly replacing a hydrogen bottle, the modularized electric power inspection unmanned aerial vehicle comprises an unmanned aerial vehicle assembly and a gas detection assembly, the unmanned aerial vehicle assembly comprises a vehicle body, a connecting rod, a containing box body, a middle box, a supporting frame, a mounting cylinder, a vent hole, a motor and a hydrogen sensor, and integration of unmanned aerial vehicle flight and hydrogen detection functions is achieved. Through the remote sampling function of the gas detection assembly, the unmanned aerial vehicle can complete detection operation without approaching a high-voltage power grid in a short distance, the probability of collision with the power grid can be remarkably reduced, risks of electric shock and power grid short circuit are avoided fundamentally, and the safety of the unmanned aerial vehicle and stable operation of a power plant are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of unmanned aerial vehicles (UAVs), specifically a modular power inspection UAV capable of quickly changing hydrogen cylinders. Background Technology

[0002] Existing drone inspection technology has the advantages of being mobile, flexible, and having a wide coverage area. It can replace manual labor in completing inspections in high-altitude and remote areas, reducing the intensity of manual labor and safety risks. At the same time, some existing inspection drones have integrated gas detection functions, which can achieve preliminary monitoring of gas parameters in specific areas, improving the intelligence level of inspection operations. However, existing technologies still have many shortcomings: existing drones are very unsafe when inspecting power plants, as they are easily affected by the electromagnetic fields of power plants, are prone to collisions with power plant grids, electric shock accidents, or even short circuits, and cannot effectively detect leaks at low altitudes. Therefore, a modular power inspection drone that can quickly replace hydrogen cylinders is proposed. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] Given the following technical problems in existing technologies: Firstly, they are susceptible to interference from the strong electromagnetic fields of power plants, leading to flight control system malfunctions, decreased positioning accuracy, and consequently, loss of flight control. Secondly, due to the lack of targeted safety avoidance and distance control designs, drones are prone to collisions with the high-voltage power grid within power plants during inspection operations. This can not only damage the drone itself but also cause electric shock accidents or even short circuits in the power grid, affecting the normal operation of the entire power plant. Thirdly, existing drones are unable to effectively penetrate the low-altitude areas of hydrogen energy power plants for hydrogen leak detection. Due to limitations in fuselage structure and the layout of detection components, their detection range is mostly concentrated in the mid-to-high altitude areas, while the low-altitude areas become blind spots due to the potential for hydrogen accumulation and concealed leak points. This makes it impossible for inspection work to fully cover the key leak risk areas of the power plant and to accurately identify potential hydrogen leaks at low altitudes.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a modular power inspection drone capable of quickly replacing hydrogen cylinders, comprising a drone component and a gas detection component. The drone component includes a body, connecting rods, a housing, an intermediate box, a support frame, a mounting cylinder, a vent, a motor, and a hydrogen sensor, integrating drone flight and hydrogen detection functions to ensure the integrity of inspection operations. Four connecting rods are evenly arranged on the body to ensure balanced force distribution on the drone and improve flight stability. Each connecting rod is formed by threaded connection of two rod-shaped parts, and each connecting rod is equipped with a motor. The motor's power output end is equipped with blades to convert motor power into flight thrust, ensuring normal take-off, landing, and cruising of the drone. The housing has evenly arranged connecting rods on its vertical surface. Ventilation holes are provided to prevent gas accumulation inside the containment chamber, reducing the impact on the hydrogen sensor's detection results. A containment chamber is located on the lower side of the fuselage, with optimized installation space to ensure the stability of the fuselage's center of gravity. An intermediate box is located at the bottom of the containment chamber, enabling integrated component arrangement. Nine mounting cylinders are evenly distributed at the bottom of the intermediate box, providing a neat installation position for the gas detection components and sensors, improving structural compactness. Support frames are located on both sides of the lower fuselage to ensure stable parking of the drone and prevent damage to fuselage components from contact with the ground. One mounting cylinder houses the gas detection component, and at least one of the remaining mounting cylinders also houses a hydrogen sensor, enabling independent arrangement of the two detection modes and ensuring the reliability of the detection function. The gas detection assembly includes a gas hammer, a ventilation channel, a gas sampling hose, a winding mechanism, and a gas intake detection mechanism. Clearly defining the core components of the gas detection assembly ensures the complete realization of sampling and detection functions. The gas hammer is movably inserted into the mounting cylinder, enabling a retractable design and reducing flight drag. The top of the gas hammer is wound around the gas sampling hose, providing a transmission channel for gas sampling. A winding mechanism is located inside the intermediate box, enabling automatic winding and unwinding of the gas sampling hose, improving the level of automation. The top of the gas sampling hose connects to the winding mechanism, ensuring smooth hose winding and unwinding. A gas intake detection mechanism is located inside the housing, making efficient use of internal space and preventing interference from the external environment.

[0006] As a preferred technical solution for a modular power inspection drone that can quickly replace hydrogen cylinders, the support frame is T-shaped, which improves the support stability of the support frame and enhances the drone's anti-tipping ability when parked; the lower end of the support frame is fitted with an elastic pad to buffer and absorb shock, reducing the impact of the impact force on the fuselage when parked.

[0007] As a preferred technical solution for modular power inspection drones capable of rapid hydrogen cylinder replacement, the gas sampling hammer is plumb-shaped, utilizing gravity to achieve stable lowering and ensure accurate sampling location. The gas sampling hose is flexible, adapting to the flexible movement of the gas sampling hammer and ensuring the continuity of the gas transmission channel. Several partitions are evenly arranged on the inner wall of the gas sampling hose to provide limiting support for the skeleton balls and prevent them from clustering. Multiple skeleton balls are evenly arranged on the inner side of the gas sampling hose to enhance the structural strength of the hose and prevent bending and blockage. The partitions separate adjacent skeleton balls, ensuring even distribution and improving the consistency of hose support. The partitions restrict the movement of the skeleton balls, ensuring that they always play a supporting role and guaranteeing smooth hose passage.

[0008] As a preferred technical solution for modular power inspection drones that can quickly replace hydrogen cylinders, the skeleton sphere is a hollow sphere, which reduces the overall weight and the drone's flight load while ensuring support strength; several ventilation holes are evenly opened on the skeleton sphere to avoid obstructing gas flow and ensure sampling efficiency.

[0009] As a preferred technical solution for a modular power inspection drone capable of quickly changing hydrogen cylinders, the winding mechanism includes a winding roller, a splined shaft, an annular cavity, a lead screw, and a reducer. Clearly defining the core components of the winding mechanism ensures stable winding functionality. A reducer is located on one side of the inner side of the intermediate box to achieve power reduction and torque amplification, ensuring stable winding torque. The reducer's power input end is fixedly connected to the servo motor's power output end, providing a precise and controllable power source for the winding mechanism. The reducer's power output end is connected to the splined shaft to achieve stable power transmission and ensure... The take-up roller rotates synchronously; one end of the take-up roller has a spline groove and the other end has a threaded groove, realizing coordinated control of the rotation and movement of the take-up roller; the spline groove and the spline shaft are movably connected, ensuring power transmission while allowing axial movement of the take-up roller; the take-up roller winds the gas sampling hose, realizing the neat storage of the gas sampling hose and avoiding messy tangling of the pipeline; a lead screw is fixedly installed on the other side of the inner side of the intermediate box, providing a guiding foundation for the axial movement of the take-up roller; the lead screw is threadedly connected to the threaded groove, converting rotation into axial movement, realizing uniform winding of the hose.

[0010] As a preferred technical solution for a modular power inspection drone capable of quickly changing hydrogen cylinders, the take-up roller has a connecting plate at each end. The connecting plate near the take-up roller has an annular cavity on its inner side, providing space for the end connection of the bellows and ensuring the airtightness of gas transmission. The annular cavity connects to the end of the gas sampling hose furthest from the gas probe, achieving a sealed connection of the gas transmission channel. Several air outlets are located on the top of the connecting plate, providing multiple outlet channels for gas transmission and ensuring smooth gas flow. The connecting seat is movably connected to the connecting plate, allowing relative rotation between them and ensuring continuous gas channel connectivity during take-up. An arc-shaped cavity is located at the bottom of the connecting seat, corresponding to the air outlets and connected to them, ensuring stable gas entry into the connecting seat. A connecting pipe is located at the top of the connecting seat, connecting to the gas intake detection mechanism for precise transmission of the sampled gas to the detection mechanism.

[0011] As a preferred technical solution for modular power inspection drones that can quickly replace hydrogen cylinders, the gas probe hammer has a ventilation channel inside, providing a dedicated channel for gas sampling and ensuring targeted sampling. The opening at the bottom of the ventilation channel is located at the bottom of the gas probe hammer, allowing the sampling port to be close to the detection area, improving sampling accuracy. The top of the ventilation channel is connected to the inside of the gas sampling hose, realizing smooth transmission of the sampled gas and ensuring continuous detection.

[0012] As a preferred technical solution for modular power inspection drones that can quickly replace hydrogen cylinders, the outer ring on the upper side of the gas probe hammer is evenly equipped with several elastic guide frames to achieve guiding and positioning when storing the gas probe hammer and ensure smooth storage; the top of the elastic guide frame is arc-shaped to reduce guiding resistance during storage and avoid scratching the inner wall of the mounting cylinder.

[0013] As a preferred technical solution for a modular power inspection drone capable of quickly replacing hydrogen cylinders, the connecting pipe is connected to the gas intake detection mechanism through a corrugated pipe, utilizing the flexible and extensible characteristics of the corrugated pipe; a compression spring is installed between the upper side of the connecting seat and the housing to provide continuous downward pressure for the connecting seat, ensuring a tight fit between the connecting seat and the connecting plate and improving the gas transmission sealing performance.

[0014] As a preferred technical solution for modular power inspection drones capable of rapid hydrogen cylinder replacement, the air intake detection mechanism includes a diaphragm-type micropump, clearly defining the core power component of the detection mechanism and ensuring stable power for air intake sampling. A connecting frame is installed inside the housing to provide stable mounting support for the diaphragm-type micropump. The diaphragm-type micropump is located below the connecting frame, with a rationally planned installation position to prevent vibrations generated during pump operation from affecting other components. The air intake end of the diaphragm-type micropump connects to a bellows to achieve stable intake of the sampled gas. A hydrogen sensor is also installed on the top of the housing. The exhaust end of the diaphragm-type micropump has an exhaust pipe that corresponds to the hydrogen sensor inside the housing, ensuring accurate contact of the sampled gas with the sensor and guaranteeing reliable detection results. The airframe is made of carbon fiber composite material with an internal metal shielding mesh. An electromagnetic interference filter is installed at the processor's power supply end, and differential signal transmission is used in the communication interface to improve flight and detection stability in strong electromagnetic field environments.

[0015] The processor selected is the STM32H743VIT6: This model uses an ARM Cortex-M7 core with a main frequency of up to 480MHz, possessing powerful data processing capabilities. It can quickly respond to and analyze the detection data from the hydrogen sensor. It also integrates multiple communication interfaces such as UART and SPI, enabling stable connection to IoT chips and drone servo motors. Its low power consumption is suitable for drone battery-powered scenarios, supports multiple energy-saving modes, and can extend the inspection endurance. In addition, this model has good anti-electromagnetic interference capabilities, can adapt to the complex electromagnetic environment of hydrogen energy power plants, and ensure the stability of data processing.

[0016] IoT chip selection EC200S-CN: This chip supports the 4GCat.1 communication standard, covering the outdoor wide area network scenario of hydrogen energy power plants. It has strong signal penetration and high connection stability, ensuring that the detection data is transmitted back to the background management system in real time. It integrates multi-constellation GNSS positioning function, which can simultaneously upload the drone inspection location information to achieve accurate matching between detection data and geographical location. It can adapt to the harsh working conditions of power plants, including high and low temperatures and voltage fluctuations, to ensure the continuous reliability of the communication link.

[0017] The advantages of the modular power inspection drone with quick hydrogen cylinder replacement according to the present invention are as follows: through the remote sampling function of the gas detection component, the inspection work can be completed without the drone being close to the high-voltage power grid, which can significantly reduce the probability of collision with the power grid, fundamentally avoid the risk of electric shock and short circuit in the power grid, and ensure the safety of the drone itself and the stable operation of the power plant.

[0018] Leveraging the flexible and retractable structure of the gas detection component, the sampling end can effectively penetrate into key low-altitude areas of hydrogen power plants, breaking the detection range limitations of traditional drones, accurately capturing hydrogen leak signals in low-altitude areas, and significantly reducing or even eliminating low-altitude detection blind spots. At the same time, the dedicated sampling channel design of the gas detection component can improve the accuracy of low-altitude sampling, ensuring that leak detection covers the entire power plant area, and significantly improving the comprehensiveness and reliability of hydrogen leak investigation in hydrogen power plants. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the 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. Wherein: Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the air hammer of the present invention; Figure 5 For the present invention Figure 3 A partially enlarged structural diagram of part A in the middle; Figure 6 For the present invention Figure 3 A partially enlarged structural diagram of section B; Figure 7 This is a schematic diagram of the internal structure of the gas sampling hose of the present invention; Figure 8 This is a schematic diagram of the connection structure between the connector and the connector plate of the present invention. Figure 1 ; Figure 9 This is a schematic diagram of the connection structure between the connector and the connector plate of the present invention. Figure 2 .

[0020] Reference numerals: 100, UAV component; 101, fuselage; 102, connecting rod; 103, housing; 104, intermediate box; 105, support frame; 106, mounting cylinder; 107, vent; 108, motor; 109, hydrogen sensor; 110, connecting frame; 200, gas detection component; 201, gas detection hammer; 202, ventilation channel; 203, flexible guide frame; 204, gas sampling hose; 2 05. Spacer; 206. Skeleton sphere; 207. Ventilation hole; 208. Take-up roller; 209. Connecting disc; 210. Vent hole; 211. Lead screw; 212. Reducer; 213. Connecting seat; 214. Bellows; 215. Diaphragm micro pump; 216. Splined shaft; 217. Annular cavity; 300. Hydrogen fuel system; 301. Hydrogen fuel cell stack; 302. Hydrogen cylinder; 303. Hydrogen supply pipeline. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0025] like Figures 1-9As shown, this invention proposes a modular power inspection drone capable of quickly changing hydrogen cylinders, including a drone component 100 and a gas detection component 200. The drone component 100 includes a body 101, connecting rods 102, a housing 103, an intermediate box 104, a support frame 105, a mounting cylinder 106, a vent 107, a motor 108, and a hydrogen sensor 109, integrating drone flight and hydrogen detection functions to ensure the integrity of inspection operations. Four connecting rods 102 are evenly arranged on the body 101, horizontally positioned to ensure balanced force distribution on the drone and improve flight stability. Each connecting rod 102 is formed by threaded connection of two rod-shaped portions, and each connecting rod 102 is equipped with a motor 108. The power output end of the motor 108 is equipped with blades to convert motor power into flight thrust, ensuring normal take-off, landing, and cruising of the drone. The housing 103... Ventilation holes 107 are evenly distributed on the vertical surface of the unit to prevent gas accumulation in the housing 103 and reduce the impact on the detection results of the hydrogen sensor 109. The housing 103 is located on the lower side of the unit 101, which rationally plans the installation space and ensures the stability of the unit's center of gravity. An intermediate box 104 is located at the bottom of the housing 103 to achieve integrated arrangement of components. Nine mounting cylinders 106 are evenly distributed at the bottom of the intermediate box 104 to provide a regular installation position for the gas detection components and sensors, improving the structural compactness. A support frame 105 is provided on each of the two sides of the lower side of the unit 101 to achieve stable parking of the UAV and prevent damage to the unit components from contact with the ground. One of the mounting cylinders 106 contains a gas detection component 200, and at least one of the other mounting cylinders 106 contains a hydrogen sensor 109, realizing independent arrangement of two detection modes and ensuring the reliability of the detection function. The gas detection assembly 200 includes a gas hammer 201, a ventilation channel 202, a gas sampling hose 204, a winding mechanism, and a gas intake detection mechanism, clearly defining the core components of the gas detection assembly and ensuring the complete realization of the sampling and detection functions. The gas hammer 201 is movably inserted into the mounting cylinder 106, realizing the retractable design of the gas hammer and reducing flight drag. The top of the gas hammer 201 is wound and connected to the gas sampling hose 204, providing a transmission channel for gas sampling. The winding mechanism is set inside the intermediate box 104 to realize the automatic winding and unwinding of the gas sampling hose 204, improving the automation level of the operation. The top of the gas sampling hose 204 is connected to the winding mechanism to ensure the smoothness of the hose winding and unwinding process. The gas intake detection mechanism is set inside the housing 103, making reasonable use of the internal space and avoiding interference from the external environment.

[0026] The support frame 105 is T-shaped, which improves the support stability of the support frame and enhances the anti-tipping ability of the drone when it is parked; the lower end of the support frame 105 is fitted with an elastic pad to buffer and absorb shock, reducing the impact of the impact force on the fuselage when parked.

[0027] The gas hammer 201 is plumb-shaped, utilizing gravity to achieve stable lowering and ensure accurate sampling location. The gas sampling hose 204 is a flexible hose, adaptable to the flexible movement of the gas hammer, ensuring the continuity of the gas transmission channel. Several partitions 205 are evenly arranged on the inner wall of the gas sampling hose 204 to provide limiting support for the skeleton balls and prevent them from clustering. Multiple skeleton balls 206 are evenly arranged on the inner side of the gas sampling hose 204 to enhance the structural strength of the hose and prevent bending and blockage. The partitions 205 separate adjacent skeleton balls 206, ensuring even distribution of the skeleton balls and improving the consistency of the hose's support effect. The partitions 205 restrict the axial movement of the skeleton balls 206 within the gas sampling hose 204, ensuring that the skeleton balls always play a supporting role and ensuring smooth hose passage.

[0028] The skeleton sphere 206 is a hollow sphere, which reduces the overall weight while ensuring support strength and reducing the flight load of the UAV; several ventilation holes 207 are evenly opened on the skeleton sphere 206 to avoid the skeleton sphere from obstructing gas flow and to ensure sampling efficiency.

[0029] Both the gas extraction hose 204 and the skeleton ball 206 are made of insulating materials, and the skeleton ball 206 is made of phenolic resin. The winding mechanism includes a winding roller 208, a splined shaft 216, an annular cavity 217, a lead screw 211, and a reducer 212. Clearly defining the core components of the winding mechanism ensures stable winding functionality. A reducer 212 is located on one side of the inner side of the intermediate box 104 to reduce power and increase torque, ensuring stable winding torque. The power input end of the reducer 212 is fixedly connected to the power output end of the servo motor, providing a precise and controllable power source for the winding mechanism. The power output end of the reducer 212 is connected to the splined shaft 216, achieving stable power transmission and ensuring synchronous rotation of the winding roller. One end of the winding roller 208 has a splined groove, and the other end has a threaded groove, enabling coordinated control of the rotation and movement of the winding roller. The spline groove and spline shaft 216 are movably connected, ensuring power transmission while allowing axial movement of the take-up roller. The take-up roller 208 winds the gas sampling hose 204, achieving neat storage of the gas sampling hose and avoiding messy tangling of the pipeline. A lead screw 211 is fixedly installed on the other side of the inner side of the intermediate box 104, providing a guiding foundation for the axial movement of the take-up roller. The lead screw 211 is threadedly connected to the threaded groove, converting rotation into axial movement and achieving uniform winding of the hose. Specifically, the take-up roller 208 achieves rotational power transmission through the sliding fit between the spline groove and the spline shaft 216; at the same time, through the helical transmission of the threaded groove and the lead screw 211, the rotation is converted into axial linear motion, ensuring that the gas sampling hose 204 is wound evenly and does not overlap.

[0030] A connecting plate 209 is provided at each end of the take-up roller 208. An annular cavity 217 is formed on the inner side of the connecting plate 209 near the take-up roller 208, providing space for the end connection of the bellows and ensuring the airtightness of gas transmission. The annular cavity 217 connects to the end of the gas sampling hose 204 away from the gas probe hammer 201, achieving a sealed connection of the gas transmission channel. Several air outlets 210 are formed on the top of the connecting plate 209, providing multiple outlet channels for gas transmission and ensuring smooth gas flow. The connecting seat 213 is connected to the connecting plate 209. The connecting seat 213 has an arc-shaped cavity at its bottom, which corresponds to the air outlet 210. The arc-shaped cavity is connected to the corresponding air outlet 210 to ensure that the gas can stably enter the interior of the connecting seat 213. The top of the connecting seat 213 is provided with a connecting pipe, which is connected to the gas intake detection mechanism to realize the accurate transmission of the sampled gas to the detection mechanism. The opening edge of the arc-shaped cavity is provided with a sealing rubber ring, and the connection between the connecting seat 213 and the connecting plate 209 is provided with a fluororubber sealing ring to ensure that there is no leakage during the gas transmission process.

[0031] The gas hammer 201 has a ventilation channel 202 inside, which provides a dedicated channel for gas sampling and ensures the targeting of the sampling. The opening at the bottom of the ventilation channel 202 is located at the bottom of the gas hammer 201, so that the sampling port can be close to the detection area and improve the sampling accuracy. The top of the ventilation channel 202 is connected to the inside of the gas sampling hose 204 to realize the smooth transmission of the sampled gas and ensure the continuity of detection.

[0032] Several elastic guide frames 203 are evenly arranged on the outer ring of the upper side of the air hammer 201 to guide and position the air hammer during storage, ensuring smooth storage; the top of the elastic guide frame 203 is arc-shaped to reduce guiding resistance during storage and avoid scratching the inner wall of the mounting cylinder.

[0033] The connecting pipe is connected to the air intake detection mechanism through the bellows 214. The flexible expansion and contraction characteristics of the bellows ensure that the connecting seat 213 can move in the vertical direction. A compression spring is provided between the upper side of the connecting seat 213 and the housing 103 to provide continuous downward pressure to the connecting seat, ensuring a tight fit between the connecting seat and the connecting plate and improving the gas transmission sealing.

[0034] The aspiration detection mechanism includes a diaphragm micropump 215, clearly defining the core power component of the detection mechanism and ensuring stable power for aspiration sampling. A connecting frame 110 is installed inside the housing 103, providing stable mounting support for the diaphragm micropump. The diaphragm micropump 215 is installed below the connecting frame 110, with a rationally planned installation position to prevent vibrations generated during pump operation from affecting other components. The aspiration end of the diaphragm micropump 215 is connected to the bellows 214, achieving stable aspiration of the sampled gas. A hydrogen sensor 109 is also installed on the top of the inner side of the housing 103. An exhaust pipe is installed at the outlet end of the diaphragm micropump 215, corresponding to the hydrogen sensor 109 inside the housing 103, ensuring accurate contact of the sampled gas with the sensor and guaranteeing reliable detection results.

[0035] The compression spring compresses the connecting seat 213 to fit against the upper side of the connecting plate 209, and the skeleton ball 206 prevents the inner walls of the gas sampling hose 204 from sticking together and blocking or closing the passage of the gas sampling hose 204 when it is coiled.

[0036] The elastic guide frame 203 guides the top of the air hammer 201 into the inner side of the mounting cylinder 106. A filter screen is installed inside the ventilation channel 202. The reducer 212 is a worm gear reducer, wherein the lead angle of the worm is less than or equal to the equivalent friction angle of the worm gear pair, giving the reducer 212 self-locking capability. A processor and an IoT chip are installed in the body 101; the processor is electrically connected to the IoT chip and the hydrogen sensor 109.

[0037] A hydrogen fuel system 300 is installed inside the drone component 100. The hydrogen fuel system 300 includes a hydrogen fuel cell stack 301, a hydrogen tank 302, and a hydrogen supply pipeline 303. The hydrogen supply module of the hydrogen fuel cell stack 301 is connected to the hydrogen supply pipeline 303. The bottom end of the hydrogen supply pipeline 303 extends into the top of the inner cavity of one of the mounting cylinders 106. A high-pressure hydrogen refueling interface is provided at the bottom end of the hydrogen supply pipeline 303. The high-pressure hydrogen refueling interface is located at the top of the mounting cylinder 106 and is equipped with a hydrogen supply pipeline. The inner side of the mounting cylinder 106 of 303 is provided with a connecting thread and is threaded to a hydrogen cylinder 302. The hydrogen cylinder 302 is a high-pressure tank for storing hydrogen. The hydrogen cylinder 302 is provided with a hydrogen refueling gun connector that connects to the high-pressure hydrogen refueling interface of the hydrogen supply pipeline 303, which can achieve quick insertion and removal. The hydrogen cylinder 302 supplies hydrogen to the hydrogen fuel cell stack 301 through the hydrogen supply pipeline 303. The hydrogen fuel cell stack 301 adopts the model H-48-1700. A solenoid valve is provided in the middle section of the hydrogen supply pipeline 303.

[0038] The specific implementation method is as follows: There are two hydrogen detection modes for power inspection drones. One mode uses the hydrogen sensor 109 inside the installation cylinder 106 to detect directly, and the other mode uses the gas inhalation detection mechanism to sample and detect in order to avoid the drone getting too close to the power grid. During operation, the servo motor controls the spline shaft 216 to rotate through the reducer 212. The spline shaft 216 rotates the winding roller 208, causing the winding roller 208 to wind around the gas sampling hose 204, causing the gas probe hammer 201 to move upward and enter the mounting cylinder 106. The take-up roller 208 releases the gas sampling hose 204: the gas sampling hose 204 causes the gas probe hammer 201 to be lowered from the inside of the mounting cylinder 106; When the spline shaft 216 rotates with the take-up roller 208, the take-up roller 208 rotates relative to the lead screw 211, causing the take-up roller 208 to move along the axis of the lead screw 211, so that the gas sampling hose 204 will not overlap on the take-up roller 208. The movement of the take-up roller 208 causes the position of the gas sampling hose 204 to continuously change when it is wound or released on the take-up roller 208. During the release of the gas sampling hose 204 by the take-up roller 208, the gas probe 201 descends and extends into the area of ​​the hydrogen power plant that needs to be detected. The control connection plate 209 is located directly below the connection seat 213, so that the connection seat 213 covers the air outlet 210 above the connection plate 209. The arc-shaped cavity of the connection seat 213 is precisely aligned and sealed with the air outlet 210 at the top of the connection plate 209, connecting the connection seat 213 and the air outlet 210. The diaphragm micro pump 215 starts to generate suction. The diaphragm micro pump 215 generates suction at the ventilation channel 202 through the bellows 214, the connection seat 213, the air outlet 210, and the annular cavity 217, thereby drawing air into the area reached by the gas probe 201. The diaphragm micro pump 215 blows the air toward the hydrogen sensor 109 inside the housing, and the hydrogen sensor 109 detects the air drawn by the diaphragm micro pump 215.

[0039] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A modular power line inspection drone capable of rapid hydrogen cylinder replacement, characterized in that: The system includes a drone component (100) and a gas detection component (200). The drone component (100) includes a body (101), connecting rods (102), a housing (103), an intermediate box (104), a support frame (105), a mounting cylinder (106), a vent (107), a motor (108), and a hydrogen sensor (109). Four connecting rods (102) are evenly arranged on the body (101). Each connecting rod (102) is formed by two rod-shaped parts threaded together. Each connecting rod (102) is equipped with a motor (108). The power output end is equipped with a blade, and the vertical surface of the housing (103) is evenly provided with ventilation holes (107). The housing (103) is provided on the lower side of the body (101). The bottom of the housing (103) is provided with an intermediate box (104). The bottom of the intermediate box (104) is evenly provided with nine mounting cylinders (106). A support frame (105) is provided on each side of the lower side of the body (101). One of the mounting cylinders (106) is provided with a gas detection component (200), and at least one of the other mounting cylinders (106) is provided with a hydrogen sensor (109). The gas detection assembly (200) includes a gas detection hammer (201), a ventilation channel (202), a gas sampling hose (204), a winding mechanism, and a gas intake detection mechanism. The gas detection hammer (201) is movably inserted into the mounting cylinder (106). The top end of the gas detection hammer (201) is wound and connected to the gas sampling hose (204). The winding mechanism is provided on the inner side of the intermediate box (104). The top end of the gas sampling hose (204) is connected to the winding mechanism. The gas intake detection mechanism is provided on the inner side of the housing (103).

2. The modular power inspection drone capable of quickly changing hydrogen cylinders according to claim 1, characterized in that: The support frame (105) is T-shaped, and an elastic pad is fitted on the lower end of the support frame (105).

3. The modular power inspection drone capable of quickly changing hydrogen cylinders according to claim 1, characterized in that: The gas sampling hammer (201) is plumb-shaped, the gas sampling hose (204) is a flexible hose, and several partitions (205) are evenly arranged on the inner wall of the gas sampling hose (204). Multiple skeleton balls (206) are evenly arranged on the inner side of the gas sampling hose (204). The partitions (205) separate adjacent skeleton balls (206) and restrict the movement of the skeleton balls (206).

4. A modular power inspection drone capable of quickly changing hydrogen cylinders according to claim 3, characterized in that: The skeleton sphere (206) is a hollow sphere, and several ventilation holes (207) are evenly distributed on the skeleton sphere (206).

5. A modular power inspection drone capable of quickly changing hydrogen cylinders according to claim 1, characterized in that: The winding mechanism includes a winding roller (208), a splined shaft (216), an annular cavity (217), a lead screw (211), and a reducer (212). The reducer (212) is provided on one side of the inner side of the intermediate box (104). The power input end of the reducer (212) is fixedly connected to the power output end of the servo motor. The power output end of the reducer (212) is connected to the splined shaft (216). One end of the winding roller (208) is provided with a spline groove, and the other end of the winding roller (208) is provided with a threaded groove. The spline groove is movably inserted into the splined shaft (216). The winding roller (208) winds the gas sampling hose (204). The lead screw (211) is fixedly provided on the other side of the inner side of the intermediate box (104). The lead screw (211) is threadedly connected to the threaded groove.

6. A modular power inspection drone capable of quickly replacing hydrogen cylinders according to claim 5, characterized in that: A connecting plate (209) is provided at each end of the take-up roller (208). An annular cavity (217) is provided on the inner side of the connecting plate (209) near the end of the take-up roller (208). The annular cavity (217) is connected to the end of the gas sampling hose (204) away from the gas probe hammer (201). Several air outlets (210) are provided on the top of the connecting plate (209). The connecting seat (213) is movably connected to the connecting plate (209). An arc-shaped cavity is provided at the bottom of the connecting seat (213). The arc-shaped cavity corresponds to the air outlet (210). The arc-shaped cavity is connected to the corresponding air outlet (210). A connecting pipe is provided at the top of the connecting seat (213). The connecting pipe is connected to the gas intake detection mechanism.

7. A modular power inspection drone capable of quickly replacing hydrogen cylinders according to claim 3, characterized in that: The air hammer (201) has an air passage (202) inside. The opening at the bottom of the air passage (202) is located at the bottom of the air hammer (201), and the top of the air passage (202) is connected to the inside of the gas sampling hose (204).

8. A modular power inspection drone capable of quickly replacing hydrogen cylinders according to claim 7, characterized in that: Several elastic guide frames (203) are evenly arranged on the outer ring of the upper side of the air hammer (201), and the top of the elastic guide frame (203) is arc-shaped.

9. A modular power inspection drone capable of quickly replacing hydrogen cylinders according to claim 6, characterized in that: The connecting pipe is connected to the air intake detection mechanism through a corrugated pipe (214), and a compression spring is provided between the upper side of the connecting seat (213) and the housing (103).

10. A modular power inspection drone capable of quickly replacing hydrogen cylinders according to claim 6, characterized in that: The inhalation detection mechanism includes a diaphragm micro pump (215), a connecting frame (110) is provided on the inner side of the housing (103), the diaphragm micro pump (215) is provided on the lower side of the connecting frame (110), the inhalation end of the diaphragm micro pump (215) is connected to the bellows (214), a hydrogen sensor (109) is also provided on the top of the inner side of the housing (103), and an exhaust pipe is provided on the outlet end of the diaphragm micro pump (215), the exhaust pipe corresponds to the hydrogen sensor (109) on the inner side of the housing (103).

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