An online monitoring system and method for oil and gas concentration in oil depots and storage tanks in petroleum and petrochemical industries.

Abstract

An online monitoring system and method for oil and gas concentration in oil and petrochemical storage tanks includes the following steps: S1, a pan-tilt unit carrying an infrared gas detector scans the surrounding detection area to acquire an infrared spectrum, and determines whether the current gas concentration in the area exceeds the standard based on the infrared spectrum; S2, if the concentration does not exceed a preset threshold, periodic scanning is maintained; if the concentration exceeds the preset threshold, a drone is activated, carrying an infrared gas detector to reach the target area and perform multi-point scanning to acquire multi-point images of the corresponding area, and the concentration of the target gas at the corresponding point is obtained based on these images; S3, if the concentration of the target gas at the corresponding point still exceeds the standard, a warning is issued according to a preset program, and the corresponding value is recorded; then the drone returns to the observation station for monitoring. This invention can operate continuously for 24 hours, monitoring for leaks of toxic and harmful gases, flammable and explosive gases, and other VOCs gases in internal floating roof storage tanks, and providing highly sensitive and rapid identification and automatic alarm for various gases.

Description

Technical Field

[0001] This invention relates to the field of petrochemicals, and in particular to an online monitoring system and method for oil and gas concentration in oil depots and storage tanks in petroleum and petrochemical industries. Background Technology

[0002] Currently, in the operation of internal floating roof tanks in petrochemical enterprises, the internal floating roof is in contact with the liquid surface. As the service life of the internal floating roof increases, its sealing performance deteriorates, leading to oil and gas concentrations inside the tank typically exceeding 2000 ppm, with concentrations exceeding 10000 ppm being common. Simultaneously, the complex composition of the gas phase space inside the internal floating roof tank and the high humidity environment easily cause corrosion of the internal floating roof. Furthermore, daily inspection and maintenance of the internal floating roof are difficult, making it hard to detect leaks in a timely manner. Therefore, the design, installation quality, and safety accessories of the internal floating roof tank are subject to high requirements. Inadequate consideration or management pose a significant risk of escalating accidents.

[0003] See Figure 1 Currently, internal floating roof tanks mainly consist of a tank body 1, an internal floating roof 2, and an vent 3. The tank body 1 is hollow and divided into a storage cavity 5 and an empty cavity 4 by the internal floating roof 2. The storage cavity 5 is filled with oil. One end of the internal floating roof 2 is in contact with the oil, and the other end is located in the storage cavity 5. During use, if the seal between the internal floating roof 2 and the tank body 1 deteriorates, oil and gas will escape into the empty cavity 4 and then be discharged through the vent 3. Therefore, it is necessary to periodically check the oil and gas concentration at the vent 3 to determine the sealing performance of the internal floating roof 2.

[0004] Existing monitoring methods involve regular personnel inspections, where workers wearing portable gas concentration alarms or other safety equipment climb to the top of the storage tank to check the concentration of oil and gas around the tank top. However, this method has several problems: 1. Gas concentration inside internal floating roof tanks cannot be detected; 2. Gas data cannot be monitored online in real time; 3. Gas detection is time-consuming, labor-intensive, and difficult to manage.

[0005] Therefore, how to achieve fast, online monitoring is an urgent problem to be solved. Summary of the Invention

[0006] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an online monitoring system and method for oil and gas concentration in oil depots and storage tanks of petroleum and petrochemical plants, which can realize real-time online monitoring of oil and gas around the storage tanks.

[0007] To achieve the above objectives, the present invention provides an online monitoring system for oil and gas concentration in oil depots and storage tanks in petroleum and petrochemical industries, comprising:

[0008] Storage tanks are used to store oil.

[0009] The observation station scans the air around the storage tanks with an infrared gas detector to obtain infrared spectral images, and then combines them with the infrared spectral images of the corresponding oil and gas to detect the gas concentration in the current area.

[0010] The drone carries an infrared gas detector via a gimbal. In its initial state, it is parked on the observation platform to detect the surrounding gas concentration. Once it detects an abnormal gas concentration in the target area, it flies to the target area with the infrared gas detector to conduct detailed detection and transmits the data to a computer for analysis.

[0011] As a further improvement of the present invention, the drone includes a fuselage, a battery, a rotor, a gimbal, and a support mechanism, wherein the battery, rotor, gimbal, and support mechanism are all mounted on the fuselage; a wireless charging receiver is installed inside the battery, which is used to cooperate with a wireless charging transmitter to achieve wireless charging; an infrared gas detector is installed on the gimbal.

[0012] There are two support mechanisms, each installed on one side of the fuselage, which are used to support the entire drone. Each support mechanism includes a support mounting plate, a support hinge seat, and a support frame. The support mounting plate is installed on the fuselage, and there are two support hinge seats, each installed on the support mounting plate. Both ends of the support frame are inserted into the two support hinge seats, and the support shaft passes through the support hinge seats and the support frame, so that the support frame is hinged to the support hinge seats. A support frame support plate is installed on the end of the support frame away from the support hinge seats.

[0013] The support mounting plate is also equipped with a support fixing frame, which is movably assembled with the support movable frame. The support movable frame includes a first movable frame plate and a second movable frame plate. The first movable frame plate is assembled with one end of the support slide shaft. The other end of the support slide shaft is fitted with a first support spring and then passes through the support fixing frame to apply an elastic force to the support movable frame to prevent it from moving toward the support fixing frame.

[0014] The second movable frame plate is provided with a backstop flange. The backstop flange and the second movable frame plate are respectively fitted and assembled with the two sides of the square shaft block. The square shaft block is installed on the support shaft. The support shaft and the support frame cannot be rotated relative to each other. In the initial state, the support frame cannot be rotated.

[0015] The movable support frame is assembled to one end of the support locking rod via a cable. The support locking rod passes through at least three support frame plates and is then assembled with the support locking plate. The support frame plates are installed on the support frame.

[0016] As a further improvement of the present invention, a locking rod ring is also installed on the portion of the support locking rod located between two adjacent support frame plates, and a second support spring is fitted on the portion of the support locking rod located between the locking rod ring and one of the support frame plates. The second support spring applies a spring force to the support locking rod to push it toward the fuselage, so that the gap between the support locking plate and the support frame plate reaches the maximum in the initial state.

[0017] The observation platform includes two side positioning mechanisms, two forward positioning mechanisms, a lifting plate mechanism, a rotating module, and a lifting frame. The two side positioning mechanisms position and support the two ends of the support frame plate, respectively. The two forward positioning mechanisms position the outer sides of the support frame plates of the two support mechanisms, respectively. The lifting plate mechanism is used to drive the lifting plate to assemble or detach from the platform slot. The rotating module is used to clamp the support frame plate and support locking plate through a clamping mechanism, and then carry the drone to rotate. The lifting frame is used to carry the rotating module to lift and lower, and to wirelessly charge the drone through a wireless charging transmitter.

[0018] As a further improvement of the present invention, the forward positioning mechanism includes a platform frame and a forward push plate. The platform frame is provided with a through platform groove. The forward push plate is respectively assembled with one end of the forward optical shaft and one end of the forward screw. The other end of the forward optical shaft is installed in the forward guide tube and is axially slidably assembled with it. The other end of the forward screw passes through the forward screw sleeve and is threadedly engaged with the forward screw sleeve. The forward screw sleeve and the forward guide tube are both mounted on the platform frame. A forward worm gear is fitted on the forward screw sleeve. The forward worm gear meshes with the forward worm gear part for transmission. The forward worm gear part is mounted or disposed on the forward motor shaft. The forward motor shaft is installed in the forward motor. The forward motor is mounted on the platform frame.

[0019] In the initial state, the forward pusher is at the end furthest from the platform slot; during use, the forward motor drives the forward pusher to move towards the platform slot until the forward pusher reaches its maximum movement point, thereby pushing the drone to the platform slot and / or the lifting plate through the two forward pushers.

[0020] As a further improvement of the present invention, the side positioning mechanism includes a side frame and a side push plate. Two side clamping plates are installed on the side push plate. When in use, the two side clamping plates are respectively inserted between two support clamping plates on both sides of the same support frame to support the drone. The side clamping plates are pressed against the side of the support frame to push the drone to the preset positioning position to complete the positioning.

[0021] The side push plate is also assembled with one end of the side optical shaft and the side screw respectively. The other ends of the side optical shaft and the side screw are respectively installed in the side guide tube and the side screw sleeve. The side screw and the side screw sleeve are assembled by threaded engagement. The side guide tube and the side screw sleeve are both installed on the side frame. A side worm gear is fitted on the side screw sleeve. The side worm gear meshes with the side worm gear part for transmission. The side worm gear part is installed or set on the side motor shaft. The side motor shaft is installed in the side motor. The side motor is installed on the side frame. In the initial state, the side push plate is at the end furthest from the platform slot.

[0022] As a further improvement of the present invention, the lifting plate mechanism includes a lifting plate, a lifting seat, a first lifting link, a second lifting link, a lifting rack, and a lifting side plate. The lifting plate is engaged with the platform slot and its top surface is flush with the top surface of the platform frame.

[0023] Lifting side plates are respectively installed on both ends of the lifting plate. The lifting side plates are hinged to one end of the first lifting link and the second lifting link, respectively. The second lifting link is hinged to the first lifting link via a lifting shaft. The other ends of the first lifting link and the second lifting link are respectively hinged to the lifting seat. The lifting seat is in contact with the lifting plate and can be slidably assembled. The lifting plate is installed on the lifting side plate. The lifting side plate is installed on the platform frame and is respectively provided with a first side plate groove and a second side plate groove that are interconnected. The lifting shaft is inserted into the first side plate groove or the second side plate groove and can be slidably assembled with it.

[0024] There are two lifting seats, which are assembled and fixed together by a lifting seat rod. The lifting seat rod is assembled and fixed with a lifting rack. The lifting rack meshes with a lifting gear for transmission. The lifting gear is installed on a lifting gear shaft. The lifting gear shaft is installed on a lifting shaft frame. The lifting shaft frame is installed on a platform frame. One end of the lifting gear shaft is connected to the output shaft of the lifting motor. The shaft of the lifting motor is installed on the lifting shaft frame.

[0025] As a further improvement of the present invention, the rotating module includes a clamping mechanism, a rotating frame, a rotating gear, and a lifting frame. The clamping mechanism is mounted on the rotating frame and is used to drive the support locking plate to move toward the support frame support plate and clamp the support locking plate and the support frame support plate.

[0026] The large rotating gear is installed on the end of the rotating frame away from the clamping mechanism, and a rotating shaft is also installed on the end of the rotating frame away from the clamping mechanism. The rotating shaft and the lifting frame can be rotatably assembled. The large rotating gear meshes with multiple rotating support teeth, and one of the rotating support teeth meshes with a rotating drive tooth. The rotating drive tooth is driven by a rotating motor. The rotating motor is installed on the rotating vertical plate. The rotating drive tooth and the rotating support tooth are installed between the rotating vertical plate and the lifting frame. The rotating vertical plate is installed on the first lifting frame plate. The first lifting frame plate is installed on the lifting frame.

[0027] The lifting frame is also equipped with a lifting frame, and one end of the lifting frame is assembled with the lifting guide shaft, and the lifting frame is assembled with one end of the lifting screw. The other ends of the lifting guide shaft and the lifting screw pass through the lifting guide tube and the lifting screw sleeve, respectively. The lifting guide tube and the lifting screw sleeve are respectively installed on the lifting fixed seat, which is fixed relative to the platform frame. The lifting screw sleeve and the lifting screw are assembled by threaded engagement. A lifting worm gear is installed on the lifting screw sleeve. The lifting worm gear and the lifting worm part mesh and drive each other. The lifting worm part is installed or set on the lifting motor shaft. The lifting motor shaft is installed inside the lifting motor and is installed on the lifting fixed seat.

[0028] As a further improvement of the present invention, a support positioning block is provided on the support locking plate; the clamping mechanism includes a clamping seat, a slot seat, a pressure plate, and a pressure plate seat. The pressure plate seat and the slot seat are both installed on the clamping seat. A second clamping shaft is fixed on one end of the pressure plate. The second clamping shaft is hinged to the pressure plate seat to realize the hinged connection between the pressure plate and the pressure plate seat. Two pressure plate strips are provided on the pressure plate. The gap between the two pressure plate strips is clamped on both sides of the support positioning block.

[0029] The card slot base is provided with two pairs of card slot blocks on both sides of the support positioning block. Each pair of card slot blocks includes two card slot blocks and a clamping groove is formed between the two card slot blocks. The support frame cardboard and the support locking plate are inserted into the clamping groove. One end of the second clamping shaft passes through the pressure plate base and is assembled with the clamping worm gear. The clamping worm gear meshes with the clamping worm part for transmission. The clamping worm part is set or mounted on the first clamping shaft. One end of the first clamping shaft passes through the clamping base and is assembled with the clamping sprocket. In the initial state, the pressure plate and the clamping base are in a perpendicular state.

[0030] The clamp sprocket is driven to rotate by the clamp chain, which is mounted on the clamp power frame and driven by the clamp motor. The clamp motor is mounted on the clamp power frame, which is mounted on the rotating frame. In the initial state, the clamp sprocket and the clamp chain are pressed together for transmission.

[0031] The clamp holder is also equipped with a first clamp holder shaft, which is assembled with one end of the clamp holder arm. A second clamp holder shaft is hinged to the other end of the clamp holder arm. The second clamp holder shaft is inserted into the inclined groove and slidably assembled therewith. The inclined groove is set on the rotating frame, and the inclined groove is inclined from the end near the clamping mechanism to the end near the rotating large tooth. The inclined direction of the inclined groove is lower near the clamping mechanism and higher near the rotating large tooth.

[0032] The first clamp seat shaft passes through the bearing seat rod and is rotatably assembled with it. The bearing seat rod is mounted on the bearing seat. The bearing seat is fitted onto two bearing seat screws and is screwed onto them. The two bearing seat screws are respectively rotatably assembled with two screw mounting plates, but cannot move axially. Both screw mounting plates are mounted on a rotating frame. The two bearing seat screws are connected by a belt to form a belt drive mechanism. One of the bearing seat screws is connected to the output shaft of the opening motor, and the opening motor is mounted on the rotating frame.

[0033] As a further improvement of the present invention, a wireless charger is also installed on the lifting frame. The wireless charger is respectively assembled with one end of the charging optical axis and the charging screw. The other ends of the charging optical axis and the charging screw pass through the charging conduit and the charging screw sleeve, respectively. The charging conduit is installed on the first lifting frame plate, the second lifting frame plate, and the third lifting frame plate and is axially slidably assembled with the charging optical axis. The charging screw sleeve is installed on the first lifting frame plate and the second lifting frame plate and is threadedly assembled with the charging screw. The charging screw sleeve is connected to the output shaft of the charging motor through the charging belt and forms a belt drive mechanism. The charging motor is installed on the second lifting frame plate. The wireless charger has a built-in wireless charging transmitter. In the initial state, the wireless charger is located closest to the second lifting frame plate. At this time, the wireless charger does not interfere with the rotation of the drone.

[0034] The present invention also provides an online monitoring system for oil and gas concentration in oil depots and storage tanks in petroleum and petrochemical industries, which is implemented through the above-mentioned online monitoring system for oil and gas concentration, and includes the following steps:

[0035] S1. The pan-tilt unit carries an infrared gas detector to scan the surrounding detection area, obtain an infrared spectrum, and determine whether the current gas concentration in the area exceeds the standard based on the infrared spectrum.

[0036] S2. If the preset threshold is not exceeded, the periodic scanning continues; if the preset threshold is exceeded, the drone is activated. The drone carries an infrared gas detector to the target area to perform multi-point scanning to collect multi-point images of the corresponding area, and obtains the concentration of the target gas at the corresponding point based on these images.

[0037] S3. If the concentration of the target gas at the corresponding point still exceeds the standard, a warning will be issued through a preset program and the corresponding value will be recorded; then the drone will return to the observation station to continue monitoring.

[0038] The beneficial effects of this invention are:

[0039] This invention employs passive Fourier transform infrared spectroscopy scanning detection technology, which can operate continuously for 24 hours to monitor the leakage of toxic and harmful gases, flammable and explosive gases, and other VOCs gases in internal floating roof storage tanks. It utilizes infrared fingerprint features to remotely detect gas clouds and achieves rapid qualitative and quantitative analysis of various gases through an infrared video intelligent analysis and control platform. It realizes scanning imaging of the detection area and performs highly sensitive rapid identification and automatic alarm for various gases.

[0040] This invention also utilizes a drone carrying an infrared gas detector to fly to suspicious areas for detection, thereby improving the accuracy of identification and providing timely warnings of safety hazards caused by oil and gas leaks. The drone can rotate 180°, allowing it to rotate 180° on the observation platform to tilt the infrared gas detector above the gimbal without obstructing its monitoring of the surrounding environment. This design is not only low-cost but also effectively achieves anti-theft, positioning, and charging of the drone, making it well-suited to the requirements of existing technologies. Attached Figure Description

[0041] Figure 1 This is a structural schematic diagram of an internal floating roof tank.

[0042] Figure 2 This is a block diagram of the invention;

[0043] Figures 3-4 This is a structural diagram of the UAV 100;

[0044] Figures 5-7 This is a structural diagram of the support mechanism 150, in which... Figure 6 This is a sectional view at the center plane where the axis of the supporting shaft 101 is located. Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0045] Figures 8-9 This is a partial structural schematic diagram of the support mechanism 150;

[0046] Figure 10 This is a structural diagram of the UAV 100 and the observation station;

[0047] Figures 11-12 This is a partial structural diagram of the observation platform;

[0048] Figure 13 This is a structural diagram of the clamping mechanism 500, the support mechanism 150, and the end positioning plate 310.

[0049] Figures 14-15 This is a structural diagram of the drone, the rotating module 600, and the lifting frame 710.

[0050] Figure 16This is a structural diagram of the drone 100, the rotating module 600, and the charging base 740.

[0051] Figures 17-18 This is a schematic diagram of the rotating module 600 and the support mechanism 150;

[0052] Figures 19-22 This is a partial structural diagram of the rotating module 600;

[0053] Figures 23-24 This is a structural schematic diagram of the lifting plate mechanism 400;

[0054] Figures 25-27 This is a schematic diagram of the rotating module 600 carrying the drone 100 after rotating 180°. Detailed Implementation

[0055] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0056] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] See Figure 2 The online monitoring method for oil and gas concentration in this embodiment is implemented through a monitoring system, which includes:

[0058] Internal floating roof tanks are used to store oil. Of course, this embodiment is not only applicable to internal floating roof tanks; theoretically, any tank that can release oil and gas is applicable.

[0059] The observation station scans the air around the storage tanks with an infrared gas detector to obtain infrared spectral images, and then combines them with the infrared spectral images of the corresponding oil and gas to detect the concentration of oil and gas in the current area; the infrared gas detector in this embodiment is a passive Fourier exchange infrared gas detector.

[0060] The drone, equipped with an infrared gas detector on a gimbal, initially hovers on the observation platform to detect the concentration of oil and gas in the surrounding area. Once it detects an abnormal concentration of oil and gas in the target area, it flies to the target area with the infrared gas detector to conduct detailed detection and transmits the data to a computer for analysis.

[0061] The online monitoring method for oil and gas concentration in this embodiment includes the following steps:

[0062] S1. The pan-tilt unit carries an infrared gas detector to scan the surrounding detection area, obtain an infrared spectrum, and determine whether the current gas concentration in the area exceeds the standard (oil gas, toxic and harmful gases, flammable and explosive gases, etc.) based on the infrared spectrum.

[0063] S2. If the preset threshold is not exceeded, the periodic scanning continues; if the preset threshold is exceeded, the drone is activated. The drone carries an infrared gas detector to the target area to perform multi-point scanning to collect multi-point images of the corresponding area, and obtains the concentration of the target gas at the corresponding point based on these images. In this way, the air around the exhaust port 3 can be used as the key detection area. The infrared gas detector scans the air around the exhaust port 3 one by one, so as to obtain the concentration of the target gas at the oil tank more accurately.

[0064] S3. If the concentration of the target gas at the corresponding point still exceeds the standard, a warning will be issued through a preset program and the corresponding value will be recorded; then the drone will return to the observation station to continue monitoring.

[0065] This embodiment employs passive Fourier transform infrared spectroscopy (FTIR) scanning detection technology to detect the concentration of a target gas. FTIR utilizes optical interference characteristics, employing a Michelson interferometer to obtain the interference pattern of incident light, and then performs a Fourier mathematical transform to convert it into an infrared spectrum. It is currently the most advanced gas remote sensing technology internationally. This embodiment comprises both hardware and software. The hardware includes a passive Fourier transform infrared remote sensing concentration analyzer, a platform, a workstation, and network communication equipment. The software includes a gas concentration remote sensing alarm platform and a gas concentration remote sensing data platform.

[0066] 1) It can perform 24-hour fully automatic non-contact real-time monitoring of an area within a radius of several kilometers.

[0067] 2) High sensitivity and rapid identification of various toxic, harmful, flammable and explosive gases and other VOCs gases.

[0068] 3) Real-time graphic and text display of detection results (including gas type and concentration), with immediate alarm (audio and visual alarm).

[0069] See Figure 3Because the gimbal 140 of the drone 100 is mounted below the fuselage 110, when the drone is placed on the observation platform, the support mechanism 150 of the drone 100 partially obstructs the detection end of the infrared gas detector 900. Furthermore, the need for charging and battery swapping of the drone necessitates additional support devices, thus increasing the obstruction area on the infrared gas detector 900. Additionally, the fuselage 110 and the observation platform also obstruct certain observation angles of the infrared gas detector 900, resulting in a smaller monitoring area that does not meet current requirements. Therefore, it is necessary to solve the problem of the infrared gas detector 900 being obstructed. Currently, there are two main solutions. One is to install the infrared gas detector 900 on both the drone and the observation platform to achieve mutual non-interference. However, the infrared gas detector 900 is expensive, and when the drone needs to be automatically charged or have its battery replaced after parking, the observation platform still needs to position and lock the drone, making it relatively costly. The second solution is to position and lock the drone after it is parked on the observation platform, open the drone's support mechanism, and then rotate the drone 180° so that the infrared gas detector 900 is rotated above the gimbal. This method utilizes the existing positioning, clamping, and charging equipment of the observation platform for the drone, and also reduces the need for one infrared gas detector 900. Both the initial cost and subsequent maintenance costs are better than the former. Therefore, this embodiment chooses the latter and makes the following improvements to the drone and the observation platform:

[0070] See Figures 3-9 The drone 100 includes a fuselage 110, a battery 120, a rotor section 130, a gimbal 140, and a support mechanism 150. The battery 120, rotor section 130, gimbal 140, and support mechanism 150 are all mounted on the fuselage 110. A rotor 131 is mounted on the rotor section 130, and the drone flies by rotating the rotor during use. A wireless charging receiver is installed inside the battery 120, which works in conjunction with a wireless charging transmitter to achieve wireless charging. An infrared gas detector 900 is mounted on the gimbal 140, and the gimbal 140 carries the infrared gas detector 900 for three-axis or two-axis movement during use.

[0071] Two support mechanisms 150 are respectively installed on both sides of the fuselage 110. The two support mechanisms 150 are used to support the parking of the entire UAV 100. Each support mechanism 150 includes a support mounting plate 151, a support hinge seat 152, and a support frame 153. The support mounting plate 151 is installed on the fuselage 110, and there are two support hinge seats 152, each installed on the support mounting plate 151. Both ends of the support frame 153 are respectively inserted into the two support hinge seats 152, and the support shaft 101 passes through the support hinge seats 152 and the support frame 153, so that the support frame 153 is hinged to the support hinge seats 152. A support frame support plate 1532 is installed on the end of the support frame 153 away from the support hinge seat 152. The support frame support plate 1532 is used to contact the plane to support the UAV.

[0072] A support fixing frame 170 is also installed on the support mounting plate 151. The support fixing frame 170 is movably assembled with the support movable frame 160. The support movable frame 160 includes a first movable frame plate 161 and a second movable frame plate 162. The first movable frame plate 161 is assembled with one end of the support sliding shaft 106. The other end of the support sliding shaft 106 is fitted with a first support spring 107 and then extends out of the support fixing frame 170 to apply a spring force to the support movable frame 160 to prevent it from moving towards the support fixing frame 170. The second movable frame plate 162 is provided with a backstop flange 163. The backstop flange 163 and the second movable frame plate 162 are respectively fitted to both sides of the square shaft block 105. The square shaft block 105 is installed on the support rotating shaft 101. The support rotating shaft 101 and the support frame 153 are not rotatably assembled relative to each other, so that the support frame 153 cannot rotate in the initial state. Figure 3 state).

[0073] The movable support frame 160 is assembled to one end of the support locking rod 102 via a cable 103. The support locking rod 102 passes through at least three support frame plates 1531 and is then assembled to the support locking plate 154. The support frame plates 1531 are mounted on the support frame 153. A locking rod ring 1021 is also installed on the portion of the support locking rod 102 located between two adjacent support frame plates 1531. A second support spring 104 is fitted on the portion of the support locking rod 102 located between the locking rod ring 1021 and one of the support frame plates 1531. The second support spring 104 applies a spring force to the support locking rod 102, pushing it toward the fuselage 110, so that the gap between the support locking plate 154 and the support frame support plate 1532 is maximized in the initial state. A support positioning block 1541 is provided on the support locking plate 154.

[0074] Preferably, see Figure 8The support hinge seat 152 is respectively provided with a first stop platform 1521 and a second stop platform 1522, which are used to limit the two maximum rotation ends of the support frame 153. When the support frame 153 is pressed against the first stop platform 1521, the support frame 153 is in a horizontal state. Figure 24 When the support frame 153 is pressed against the second stop platform 152, the support frame 153 is in a vertical state. Figure 3 ).

[0075] See Figures 10-24 The observation platform includes two side positioning mechanisms 300, two forward positioning mechanisms 200, a lifting plate mechanism 400, a rotation module 600, and a lifting frame. The two side positioning mechanisms 300 respectively position the two ends of the support frame plate 1532 and support the UAV. The two forward positioning mechanisms 200 respectively position the outer surfaces of the support frame plate 1532 of the two support mechanisms 150. The lifting plate mechanism 400 is used to drive the lifting plate 410 to assemble or separate from the platform slot 2011. The rotation module 600 is used to clamp the support frame plate 1532 and the support locking plate 154 through the clamping mechanism 500, and then carry the UAV 100 to rotate. The lifting frame is used to carry the rotation module 600 to lift and lower, and to wirelessly charge the UAV through a wireless charging transmitter.

[0076] See Figures 10-13 The forward positioning mechanism 200 includes a platform frame 250 and a forward push plate 211. The platform frame 250 has a through platform groove 251. The forward push plate 211 is respectively assembled with one end of the forward optical axis 212 and one end of the forward screw 221. The other end of the forward optical axis 212 is inserted into the forward guide tube 213 and is axially slidably assembled therewith. The other end of the forward screw 221 passes through the forward threaded sleeve 222 and is threadedly engaged with the forward threaded sleeve 222. The forward threaded sleeve 222 and the forward guide tube 213 are both mounted on the platform frame 250. A forward worm gear 231 is fitted onto the forward threaded sleeve 222, and the forward worm gear 231 engages with the forward worm... The rod part 232 engages in transmission, and the forward worm gear part 232 is mounted or disposed on the forward motor shaft 241. The forward motor shaft 241 is installed inside the forward motor 240, and the forward motor 240 is mounted on the platform frame 250. In the initial state, the forward push plate 211 is at the end furthest from the platform slot 251, so as not to hinder the drone from taking off and landing on the platform frame 250. In use, the forward motor 240 drives the forward push plate 211 to move towards the platform slot 251 until the forward push plate 211 reaches the maximum movement point, thereby pushing the drone to the platform slot 251 and / or the lifting plate 410 through the two forward push plates 211 to achieve the first positioning.

[0077] See Figures 10-13The side positioning mechanism 300 includes a side frame 350 and a side push plate 310. Two side clamping plates 311 are installed on the side push plate 310. In use, the two side clamping plates 311 are respectively clamped between two of the support clamping plates 1531 on both sides of the same support frame 153 to support the drone 100. The side clamping plates 311 are pressed against the side of the support frame 153 to push the drone to the preset positioning position to complete the second positioning. The side push plate 310 is also assembled with one end of the side optical shaft 311 and the side screw 321 respectively. The other ends of the side optical shaft 311 and the side screw 321 are respectively installed into the side guide tube 312 and the side threaded sleeve 322. The side screw 321 and the side threaded sleeve 322 are assembled by threaded engagement. The side guide tube 312 and the side threaded sleeve 322 are both installed on the side frame 350. A side worm gear 331 is fitted on the side threaded sleeve 322. The side worm gear 331 meshes with the side worm part 332 for transmission. The side worm part 332 is installed or set on the side motor shaft 341. The side motor shaft 341 is installed in the side motor 340. The side motor 340 is installed on the side frame 350. After the side motor 340 is started, it can drive the side push plate 310 to move towards the platform slot 251 to the maximum displacement point. In the initial state, the side push plate 310 is at the end furthest from the platform slot 251.

[0078] See Figures 10-9 , Figures 23-24The lifting plate mechanism 400 includes a lifting plate 410, a lifting seat 420, a first lifting link 431, a second lifting link 432, a lifting rack 441, and a lifting side plate 460. The lifting plate 410 is engaged with the platform slot 251 and its top surface is flush with the top surface of the platform frame 250 to facilitate the take-off, landing, and positioning of the UAV. Lifting side plates 411 are respectively installed on both ends of the lifting plate 410. The lifting side plates 411 are hinged to one end of the first lifting link 431 and the second lifting link 432, respectively. The second lifting link 432 is hinged to the first lifting link 431 and the second lifting link 432 through the lifting shaft 480. The other ends of the first lifting link 431 and the second lifting link 432 are respectively hinged to the lifting seat 420. The lifting seat 420 is in contact with the lifting plate 463 and can be slidably assembled. The lifting plate 463 is installed on the lifting side plate 460. The lifting side plate 460 is installed on the platform frame 250 and is respectively provided with a first side plate groove 461 and a second side plate groove 462 that are interconnected. The lifting shaft 480 is inserted into the first side plate groove 461 or the second side plate groove 462 and can be slidably assembled with it. There are two lifting seats 420, which are fixed together by a lifting seat rod 421. The lifting seat rod 421 is fixed to a lifting rack 441, which meshes with a lifting gear 442. The lifting gear 442 is mounted on a lifting gear shaft 451, which is mounted on a lifting shaft bracket 470. The lifting shaft bracket is mounted on a platform frame 250, and one end of the lifting gear shaft 451 is connected to the output shaft of a lifting motor 450. The lifting motor shaft is mounted on the lifting shaft bracket 470. After the lifting motor is started, it can drive the lifting rack to move, thereby driving the lifting plate 410 and the lifting shaft 480 to run. When the lifting shaft 480 is assembled with the second side plate groove 462, the lifting plate 410 is in the state closest to the lifting seat 420. Figure 24 When the lifting shaft 480 is assembled with the first side plate groove 461, the lifting plate 410 is in the state furthest away from the lifting seat 420. Figure 23 At this time, the lifting plate engages with the platform slot 251 to seal the platform slot 251. Figure 23 State transition to Figure 24 In the state of lifting rack 441, the lifting seat 420 is driven to move away from the platform groove 251, thereby causing the lifting plate 410 to move down and the lifting shaft 480 to move down along the first side plate groove 461 to the second side plate groove 462. Then, the lifting plate 410 is pulled away from the platform groove 251 and the lifting shaft 480 slides along the second side plate groove 462 until the lifting plate 410 does not overlap with the platform groove 251.

[0079] See Figures 13-22The rotating module 600 includes a clamping mechanism 500, a rotating frame 610, a rotating large tooth 621, a rotating support tooth 622, a rotating drive tooth 623, and a lifting frame 710. The clamping mechanism 500 is mounted on the rotating frame 610 and includes a clamping seat 530, a slot seat 510, a pressure plate 520, and a pressure plate seat 540. The pressure plate seat 540 and the slot seat 510 are both mounted on the clamping seat 530. A second clamping shaft 502 is fixed to one end of the pressure plate 520. The second clamping shaft 502 is hinged to the pressure plate seat 540 to achieve the hinge connection between the pressure plate 520 and the pressure plate seat 540. Two pressure plate strips 521 are provided on the pressure plate 520, and the gap between the two pressure plate strips 521 is clamped on both sides of the support positioning block 1541.

[0080] The card slot seat 510 is located on both sides of the support positioning block 1541, and two pairs of card slot blocks 511 are respectively provided. Each pair of card slot blocks 511 includes two card slot blocks, and a clamping groove 512 is formed between the two card slot blocks. The support frame cardboard 1532 and the support locking plate 154 are inserted into the clamping groove 512. One end of the second clamping shaft 502 passes through the pressure plate seat 540 and is assembled with the clamping worm gear 582. The clamping worm gear 582 meshes with the clamping worm part for transmission. The clamping worm part 581 is set or mounted on the first clamping shaft 501. One end of the first clamping shaft 501 passes through the clamping seat 530 and is assembled with the clamping sprocket 570. In the initial state, the pressure plate 520 and the clamping seat 530 are in a perpendicular state.

[0081] The clamp sprocket 570 is driven to rotate by the clamp chain 650, which is mounted on the clamp power frame 613 and driven by the clamp motor 640. The clamp motor 640 is mounted on the clamp power frame 613, which is mounted on the rotating frame 610. Initially, the clamp sprocket 570 and the clamp chain 650 are pressed together for transmission. Figure 27 In this state, the clamping mechanism 500 is away from the clamping chain 650, thus separating the clamping chain 650 from the clamping sprocket 570. This embodiment utilizes the clamping worm gear 582 and the clamping worm section 581 primarily to leverage the unidirectional transmission performance of the worm gear, ensuring that the pressure plate remains stationary even after the clamping chain 650 separates from the clamping sprocket 570.

[0082] The large rotating gear 621 is mounted on the end of the rotating frame 610 away from the clamping mechanism 500, and a rotating shaft 624 is also mounted on the end of the rotating frame 610 away from the clamping mechanism 500. The rotating shaft 624 and the lifting frame 710 are rotatably assembled. The large rotating gear 621 meshes with multiple rotating support gears 622, one of which meshes with a rotating drive gear 623. The rotating drive gear 623 is driven by a rotary motor 750, which is mounted on a rotating upright plate 714. The rotating drive gear 623 and the rotating support gear 622 are mounted between the rotating upright plate 714 and the lifting frame 710. The rotating upright plate 714 is mounted on a first lifting frame plate 711, and the first lifting frame plate 711 is mounted on the lifting frame 710. In use, the large rotating gear 621 can be driven to rotate by the rotary motor 750, thereby driving the rotating frame 610 to rotate synchronously, which in turn drives the drone to rotate.

[0083] The clamp holder 530 is also equipped with a first clamp holder shaft 531, which is assembled with one end of the clamp holder arm 532. A second clamp holder shaft 533 is hinged to the other end of the clamp holder arm 532. The second clamp holder shaft 533 is inserted into and slidably assembled with the inclined groove 161. The inclined groove 161 is set on the rotating frame 610, and the inclined groove 161 is inclined from the end near the clamping mechanism 500 to the end near the rotating large tooth 621. The inclined direction of the inclined groove 161 is lower near the clamping mechanism 500 and higher near the rotating large tooth 621.

[0084] The first clamping seat shaft 531 passes through the bearing rod 561 and is rotatably assembled with it. The bearing rod 561 is mounted on the bearing seat 560. The bearing seat 560 is fitted onto two bearing seat screws 550 and is threadedly assembled with them. The two bearing seat screws 550 are respectively rotatably assembled with two screw mounting plates 612, but cannot move axially. Both screw mounting plates 612 are mounted on the rotating frame 610. The two bearing seat screws 550 are connected by a belt 660 to form a belt drive mechanism. One of the bearing seat screws 550 is connected to the output shaft of the opening motor 660, which is mounted on the rotating frame 610.

[0085] When using it, first, the drone 100 should be in accordance with... Figure 10 The drone is positioned or roughly in the correct orientation on platform 250. Then, two forward positioning mechanisms 200 are activated to perform the first positioning of the drone. Next, two side positioning mechanisms 300 are activated to perform a second positioning of the drone using side push plates 310, with the side end clamping plates 311 of the two side push plates 310 respectively engaging in preset positions on support frame 153 for later drone support. Then, the lifting plate 410 is opened, and the forward positioning mechanisms 200 are reset, allowing the lifting plate 410 to reach its designated position. Figure 24In the current state, the rotating module 600 moves upward, causing the clamping slot 512 to engage with the support frame plate 1532. The clamping motor 640 is activated, driving the clamping sprocket 570 to rotate, which in turn drives the second clamping shaft 502 to rotate. The second clamping shaft 502 drives the pressure plate 520 to rotate towards the support frame plate 1532, thereby pressing the support locking plate 154 against the support frame plate 1532 until the support locking plate 154 is pressed tightly against the support frame plate 1532. During this process, the support locking plate 154 drives the support locking rod 102 to move downward. The support locking rod 102 drives the support movable frame 160 to move downward through the cable 103, so that the second movable clamping plate 162 and the anti-reverse flange 163 move downward and separate from the square shaft block 105. The square shaft block 105 and the support rotating shaft 101 can rotate, that is, the support frame 153 can rotate relative to the machine body. The side positioning mechanism resets, and the opening motor 660 is started. After the opening motor 660 starts, it can drive the two bearing screws 550 to rotate, thereby driving the bearing 560 to move along its axial direction. The bearing 560 drives the entire clamping mechanism 500 to move synchronously, so that the clamping mechanism 500 carrying the support frame 151 rotates and opens relative to the machine body 110. At the same time, the second clamping seat shaft 533 slides along the inclined groove 161, so that the second clamping seat shaft 533 drives the clamping seat arm 532 to rotate. The clamping seat arm 532 drives the clamping seat 530 to gradually rotate to match the rotation angle required when the support frame 153 rotates and opens, until it reaches the desired angle. Figure 27 At this point, the support frame 153 is pressed against the first stop platform 1521, achieving its maximum unfolding angle. This allows both support frames 152 to open relative to the fuselage, thus not obstructing the infrared gas detector 900. Then, the lifting frame 710 is raised above the platform frame 250. The rotary motor 750 is activated, driving the large rotating gear 621 to rotate the rotating frame 610 180°. At this point, the gimbal and infrared gas detector 900 are at their highest points, facilitating the infrared gas detector 900's detection of the surrounding environment. To reverse the drone and reset it, simply repeat the above steps in reverse.

[0086] After the drone rotates 180°, its battery 120 is located at the bottom, at which point it can be charged via a wireless charger 740. The wireless charger 740 is assembled with one end of a charging optical axis 741 and a charging screw 742. The other ends of the charging optical axis 741 and the charging screw 742 pass through a charging conduit 701 and a charging sleeve 702, respectively. The charging conduit 701 is mounted on the first lifting plate 711, the second lifting plate 712, and the third lifting plate 713 and is axially slidably assembled with the charging optical axis 741. The charging sleeve 702 is mounted on the first lifting plate 711 and the second lifting plate 712 and is threadedly engaged with the charging screw 742. The charging sleeve 702 is connected to the output shaft of the charging motor 760 via a charging belt 703, forming a belt drive mechanism. The charging motor 760 is mounted on the second lifting plate 712. The wireless charger 740 has a built-in wireless charging transmitter, which allows for wireless charging of the drone. Initially, the wireless charger 740 is positioned closest to the second lifting platform 712, at which point it does not interfere with the drone's rotation. When charging is required, the drone rotates 180°, and the charging motor 760 starts to drive the charging sleeve 702 to rotate, thereby driving the charging screw 742 to move axially upward until the wireless charger 740 is firmly attached to the outer end face of the battery 120, at which point charging can begin.

[0087] Preferably, the lifting frame 710 is further equipped with a lifting frame 715, and the lifting frame 710 is also assembled with one end of the lifting guide shaft 721. The lifting frame 715 is assembled with one end of the lifting screw 722. The other ends of the lifting guide shaft 721 and the lifting screw 722 pass through the lifting guide tube 721 and the lifting screw sleeve 705, respectively. The lifting guide tube 721 and the lifting screw sleeve 705 are respectively installed on the lifting fixed seat 720, which is fixed relative to the platform frame 250. The lifting screw sleeve 705 and the lifting screw 722 are assembled by threaded engagement. A lifting worm gear 812 is installed on the lifting screw sleeve 705. The lifting worm gear 812 meshes with the lifting worm part 811 for transmission. The lifting worm part 811 is installed or disposed on the lifting motor shaft 731. The lifting motor shaft 731 is installed inside the lifting motor 730, and the lifting motor shaft is installed on the lifting fixed seat 720. After the lifting motor 720 is started, it can drive the lifting screw sleeve 705 to rotate. The lifting screw sleeve 705 drives the lifting screw 722 to rise and fall axially, thereby driving the lifting frame 710 to rise and fall.

[0088] Any aspects of this invention not described in detail are well-known to those skilled in the art.

[0089] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An on-line monitoring system for oil gas concentration in petroleum and petrochemical storage tanks, characterized by, include: Storage tanks are used to store oil. The observation station scans the air around the storage tanks with an infrared gas detector to obtain infrared spectral images, and then combines them with the infrared spectral images of the corresponding oil and gas to detect the gas concentration in the current area. The drone is equipped with an infrared gas detector via a gimbal. In its initial state, it is parked on the observation platform to detect the surrounding gas concentration. Once it detects an abnormal gas concentration in the target area, it flies to the target area with the infrared gas detector to conduct detailed detection and transmits the data to a computer for analysis. The drone includes a fuselage, a battery, a rotor, a gimbal, and a support mechanism. The battery, rotor, gimbal, and support mechanism are all mounted on the fuselage. A wireless charging receiver is installed inside the battery, which works in conjunction with a wireless charging transmitter to achieve wireless charging. An infrared gas detector is installed on the gimbal. There are two support mechanisms, each installed on one side of the fuselage, which are used to support the entire drone. Each support mechanism includes a support mounting plate, a support hinge seat, and a support frame. The support mounting plate is installed on the fuselage, and there are two support hinge seats, each installed on the support mounting plate. Both ends of the support frame are inserted into the two support hinge seats, and the support shaft passes through the support hinge seats and the support frame, so that the support frame is hinged to the support hinge seats. A support frame support plate is installed on the end of the support frame away from the support hinge seats. The support mounting plate is also equipped with a support fixing frame, which is movably assembled with the support movable frame. The support movable frame includes a first movable frame plate and a second movable frame plate. The first movable frame plate is assembled with one end of the support slide shaft. The other end of the support slide shaft is fitted with a first support spring and then passes through the support fixing frame to apply an elastic force to the support movable frame to prevent it from moving toward the support fixing frame. The second movable frame plate is provided with a backstop flange. The backstop flange and the second movable frame plate are respectively fitted and assembled with the two sides of the square shaft block. The square shaft block is installed on the support shaft. The support shaft and the support frame cannot be rotated relative to each other. In the initial state, the support frame cannot be rotated. The movable support frame is assembled to one end of the support locking rod via a cable. The support locking rod passes through at least three support frame plates and is then assembled to the support locking plate. The support frame plates are installed on the support frame. A locking rod ring is also installed on the part of the support locking rod located between two adjacent support frame plates. A second support spring is fitted on the part of the support locking rod located between the locking rod ring and one of the support frame plates. The second support spring applies a spring force to the support locking rod to push it toward the fuselage, so that the gap between the support locking plate and the support frame plate reaches the maximum in the initial state. The observation platform includes two side positioning mechanisms, two forward positioning mechanisms, a lifting plate mechanism, a rotating module, and a lifting frame. The two side positioning mechanisms position and support the two ends of the support frame plate, respectively; the two forward positioning mechanisms position the outer sides of the support frame plates of the two support mechanisms, respectively; the lifting plate mechanism is used to drive the lifting plate to assemble or detach from the platform slot; the rotating module is used to clamp the support frame plate and support locking plate through a clamping mechanism, and then rotate the drone; the lifting frame is used to lift and lower the rotating module and wirelessly charge the drone through a wireless charging transmitter. The forward positioning mechanism includes a platform frame and a forward push plate. The platform frame has a through platform groove. The forward push plate is respectively assembled with one end of the forward optical shaft and one end of the forward screw. The other end of the forward optical shaft is inserted into the forward guide tube and is axially slidably assembled with it. The other end of the forward screw passes through the forward threaded sleeve and is threadedly engaged with the forward threaded sleeve. The forward threaded sleeve and the forward guide tube are both mounted on the platform frame. A forward worm gear is fitted on the forward threaded sleeve. The forward worm gear meshes with the forward worm. The forward worm is mounted or disposed on the forward motor shaft. The forward motor shaft is installed inside the forward motor. The forward motor is mounted on the platform frame. In the initial state, the forward pusher is at the end furthest from the platform slot; during use, the forward motor drives the forward pusher to move towards the platform slot until the forward pusher reaches its maximum movement point, thereby pushing the drone to the platform slot and / or the lifting plate through the two forward pushers; The side positioning mechanism includes a side frame and a side push plate. Two side clamping plates are installed on the side push plate. When in use, the two side clamping plates are respectively inserted between two support clamping plates on both sides of the same support frame to support the drone. The side clamping plates are pressed against the side of the support frame to push the drone to the preset positioning position to complete the positioning. The side push plate is also assembled with one end of the side optical shaft and one end of the side screw, respectively. The other ends of the side optical shaft and the side screw are respectively installed into the side guide tube and the side screw sleeve. The side screw and the side screw sleeve are assembled by threaded engagement. The side guide tube and the side screw sleeve are both installed on the side frame. A side worm gear is fitted on the side screw sleeve. The side worm gear meshes with the side worm gear part for transmission. The side worm gear part is installed or set on the side motor shaft. The side motor shaft is installed in the side motor. The side motor is installed on the side frame. In the initial state, the side push plate is at the end furthest from the platform slot. The lifting plate mechanism includes a lifting plate, a lifting seat, a first lifting link, a second lifting link, a lifting rack, and a lifting side plate. The lifting plate is engaged with the platform slot and its top surface is flush with the top surface of the platform frame. Lifting side plates are respectively installed on both ends of the lifting plate. The lifting side plates are hinged to one end of the first lifting link and the second lifting link, respectively. The second lifting link is hinged to the first lifting link via a lifting shaft. The other ends of the first lifting link and the second lifting link are respectively hinged to the lifting seat. The lifting seat is in contact with the lifting plate and can be slidably assembled. The lifting plate is installed on the lifting side plate. The lifting side plate is installed on the platform frame and is respectively provided with a first side plate groove and a second side plate groove that are interconnected. The lifting shaft is inserted into the first side plate groove or the second side plate groove and can be slidably assembled with it. There are two lifting seats, which are assembled and fixed together by a lifting seat rod. The lifting seat rod is assembled and fixed with a lifting rack. The lifting rack meshes with a lifting gear for transmission. The lifting gear is installed on a lifting gear shaft. The lifting gear shaft is installed on a lifting shaft frame. The lifting shaft frame is installed on a platform frame. One end of the lifting gear shaft is connected to the output shaft of the lifting motor. The shaft of the lifting motor is installed on the lifting shaft frame. The rotating module includes a clamping mechanism, a rotating frame, a rotating gear, and a lifting frame. The clamping mechanism is installed on the rotating frame and is used to drive the support locking plate to move toward the support frame support plate and clamp the support locking plate and the support frame support plate. The large rotating gear is installed on the end of the rotating frame away from the clamping mechanism, and a rotating shaft is also installed on the end of the rotating frame away from the clamping mechanism. The rotating shaft and the lifting frame can be rotatably assembled. The large rotating gear meshes with multiple rotating support teeth, and one of the rotating support teeth meshes with a rotating drive tooth. The rotating drive tooth is driven by a rotating motor. The rotating motor is installed on the rotating vertical plate. The rotating drive tooth and the rotating support tooth are installed between the rotating vertical plate and the lifting frame. The rotating vertical plate is installed on the first lifting frame plate. The first lifting frame plate is installed on the lifting frame. The lifting frame is also equipped with a lifting frame, and one end of the lifting frame is assembled with the lifting guide shaft, and the lifting frame is assembled with one end of the lifting screw. The other ends of the lifting guide shaft and the lifting screw pass through the lifting guide tube and the lifting screw sleeve, respectively. The lifting guide tube and the lifting screw sleeve are respectively installed on the lifting fixed seat, which is fixed relative to the platform frame. The lifting screw sleeve and the lifting screw are assembled by threaded engagement. A lifting worm gear is installed on the lifting screw sleeve. The lifting worm gear meshes with the lifting worm gear. The lifting worm gear is partially installed or set on the lifting motor shaft. The lifting motor shaft is installed inside the lifting motor and is installed on the lifting fixed seat. A support positioning block is provided on the support locking plate; the clamping mechanism includes a clamping seat, a clamping slot seat, a pressure plate, and a pressure plate seat. The pressure plate seat and the clamping slot seat are both installed on the clamping seat. A second clamping shaft is fixed on one end of the pressure plate. The second clamping shaft is hinged to the pressure plate seat to realize the hinge connection between the pressure plate and the pressure plate seat. Two pressure plate strips are provided on the pressure plate. The gap between the two pressure plate strips is clamped on both sides of the support positioning block. The card slot base is provided with two pairs of card slot blocks on both sides of the support positioning block. Each pair of card slot blocks includes two card slot blocks and a clamping groove is formed between the two card slot blocks. The support frame cardboard and the support locking plate are inserted into the clamping groove. One end of the second clamping shaft passes through the pressure plate base and is assembled with the clamping worm gear. The clamping worm gear meshes with the clamping worm part for transmission. The clamping worm part is set or mounted on the first clamping shaft. One end of the first clamping shaft passes through the clamping base and is assembled with the clamping sprocket. In the initial state, the pressure plate and the clamping base are in a perpendicular state. The clamp sprocket is driven to rotate by the clamp chain, which is mounted on the clamp power frame and driven by the clamp motor. The clamp motor is mounted on the clamp power frame, which is mounted on the rotating frame. In the initial state, the clamp sprocket and the clamp chain are pressed together for transmission. The clamp holder is also equipped with a first clamp holder shaft, which is assembled with one end of the clamp holder arm. A second clamp holder shaft is hinged to the other end of the clamp holder arm. The second clamp holder shaft is inserted into the inclined groove and slidably assembled therewith. The inclined groove is set on the rotating frame, and the inclined groove is inclined from the end near the clamping mechanism to the end near the rotating large tooth. The inclined direction of the inclined groove is lower near the clamping mechanism and higher near the rotating large tooth. The first clamp seat shaft passes through the bearing seat rod and is rotatably assembled with it. The bearing seat rod is mounted on the bearing seat. The bearing seat is fitted onto two bearing seat screws and is screwed onto them. The two bearing seat screws are respectively rotatably assembled with two screw mounting plates, but cannot move axially. Both screw mounting plates are mounted on a rotating frame. The two bearing seat screws are connected by a belt to form a belt drive mechanism. One of the bearing seat screws is connected to the output shaft of the opening motor, and the opening motor is mounted on the rotating frame.

2. The online oil and gas concentration monitoring system of claim 1, wherein, A wireless charger is also installed on the lifting frame. The wireless charger is respectively assembled with one end of the charging optical axis and the charging screw. The other ends of the charging optical axis and the charging screw pass through the charging conduit and the charging screw sleeve, respectively. The charging conduit is installed on the first lifting frame plate, the second lifting frame plate, and the third lifting frame plate and is axially slidably assembled with the charging optical axis. The charging screw sleeve is installed on the first lifting frame plate and the second lifting frame plate and is threadedly assembled with the charging screw. The charging screw sleeve is connected to the output shaft of the charging motor through the charging belt and forms a belt drive mechanism. The charging motor is installed on the second lifting frame plate. The wireless charger has a built-in wireless charging transmitter. In the initial state, the wireless charger is located closest to the second lifting frame plate. At this time, the wireless charger does not interfere with the rotation of the drone.

3. An on-line monitoring system for oil gas concentration in petroleum petrochemical oil depot storage tank, characterized in that, It is achieved through the online oil and gas concentration monitoring system according to any one of claims 1-2, comprising the following steps: S1. Rotate the drone 180° on the observation platform so that the infrared gas detector flips to the top of the gimbal. The gimbal carries the infrared gas detector to scan the surrounding detection area and obtain an infrared spectrum. Based on the infrared spectrum, determine whether the current gas concentration in the area exceeds the standard. S2. If the preset threshold is not exceeded, continue periodic scanning; If the preset threshold is exceeded, the drone will be activated. The drone carries an infrared gas detector to reach the target area to perform multi-point scanning to collect multi-point images of the corresponding area, and obtain the concentration of the target gas at the corresponding point based on these images. S3. If the concentration of the target gas at the corresponding point still exceeds the standard, a warning will be issued through a preset program and the corresponding value will be recorded; then the drone will return to the observation station to continue monitoring.

Images