High and cold area pipeline temperature monitoring system

Abstract

The invention provides an alpine region pipeline temperature monitoring system, and relates to the technical field of alpine region water supply. The high and cold area pipeline temperature monitoring system comprises a cloud data platform, a communication system, an intelligent water supply pipe, an unmanned monitoring station and two internal heating devices. According to the system, the DTS system is fused with the monitoring unmanned aerial vehicle monitoring pipeline technology carrying monitoring equipment, multi-technology fusion and operation and maintenance mode innovation are adopted, so that the performance and reliability of the DTS system in high and cold water supply pipeline monitoring can be greatly improved, a plurality of unmanned monitoring stations are arranged along the line, and each unmanned monitoring station is provided with two groups of monitoring unmanned aerial vehicles; through the form that the two groups of monitoring unmanned aerial vehicles are alternately started, the problem of insufficient endurance caused by battery capacity attenuation of the monitoring unmanned aerial vehicles in alpine regions is greatly reduced, and the purpose of covering pipeline inspection between the two groups of unmanned monitoring stations can be achieved; and the charging efficiency of the monitoring unmanned aerial vehicle in the parking cavity and the battery pack in the underground box body is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water supply in high-cold regions, and particularly relates to a pipeline temperature monitoring system in a high-cold region. BACKGROUND

[0002] There are special requirements for the water supply system in Tibet, China. First, the extreme climate challenge: the average altitude of the Tibet Autonomous Region is more than 4000 meters, and the area with an average temperature below 0 DEG C accounts for 45%. The extreme low temperature in winter can reach -40 DEG C. The high-altitude low-pressure environment causes the freezing point of water to rise, and the freezing time of the conventional water supply pipeline is shortened by more than 60% without protective measures. Second, the influence of the frozen soil layer: the permanent frozen soil covers an area of 70% of the whole region, and the seasonal freezing and thawing cycle causes the displacement of the pipeline foundation. Monitoring data shows that the annual frost heaving displacement of the water supply pipeline in Naqu region is 5-8 cm. Compared with other regions, the water supply pipeline in Tibet needs to be heated, and the existing water supply pipeline temperature monitoring technology has the limitation of point monitoring: the traditional RTD sensor adopts discrete point distribution (the interval is usually greater than or equal to 50 m), and cannot capture the longitudinal temperature gradient change of the pipeline, so manual inspection is needed, but manual inspection has the disadvantages of high labor cost, low efficiency, high safety risk caused by hypoxia and extreme weather, and loss caused by missed inspection.

[0003] In order to solve the above problems, a new type of intelligent pipeline with optical cables and heating cables is proposed to replace the traditional steel and other material pipelines. The pipeline material with intelligent sensing and control capabilities uses distributed optical fiber temperature measurement technology to solve the overall temperature measurement problem of the water supply pipeline: the distributed optical fiber is laid on the outer wall or inside of the water supply pipeline (using the above intelligent material with optical fiber), and the optical fiber is in close contact with or as close as possible to the pipeline to accurately sense the temperature change of the pipeline. The distributed optical fiber temperature sensing system (DTS) is used to collect the temperature information of each point along the optical fiber in real time. The collected temperature data is transmitted to the data processing center through the optical fiber, the temperature parameters of the pipeline can be sensed, the problems such as pipeline leakage detection, external construction damage warning and stratum collapse warning can be solved, and the electric heating work can be intelligently controlled according to the temperature change to effectively control the temperature range of the overall pipeline.

[0004] However, the conventional DTS system has an accuracy of ±1 DEG C and a spatial resolution of 0.5-3 meters, which is difficult to detect small leaks or local freezing points, and a single DTS system may miss mechanical damage or internal corrosion, so it is necessary to deploy a new pipeline temperature monitoring system in combination with the DTS system to improve the accuracy of the temperature monitoring system in the form of multi-technology fusion. SUMMARY

[0005] In view of the defects of the prior art, the high-cold region pipeline temperature monitoring system is provided to solve the problems of large artificial inspection defects in the prior art high-cold region pipeline temperature monitoring system, and the problems of the need to improve the precision of the conventional DTS system and the single monitoring mode.

[0006] To achieve the above object, the high-cold region pipeline temperature monitoring system is implemented by the following technical scheme: a high-cold region pipeline temperature monitoring system, comprising a cloud data platform, a communication system, an intelligent water supply pipe material, an unmanned monitoring station and two groups of internal heating devices, the intelligent water supply pipe material comprises a pipe material body and heating cables, three-phase power cables, signal cables and a distributed optical fiber temperature sensing system arranged inside the pipe material body, the unmanned monitoring station is composed of a foundation, an underground box arranged below the foundation and a ground box arranged above the foundation, the upper wall of the foundation is flush with the ground, a battery pack and a control cabinet are arranged inside the underground box, a maintenance door for maintenance is arranged on the side wall of the underground box, a heat preservation layer is arranged on the inner side wall of the ground box, the inner side wall of the underground box and the side of the maintenance door facing the inside of the underground box, two groups of the internal heating devices are arranged inside the ground box and the underground box respectively, two groups of storage cavities are arranged in the front wall of the ground box in an upward distribution, a movable cabin is slidably connected to the inner side wall of the storage cavity, a first partition plate is fixedly connected to the inner side wall of the storage cavity, a first driving structure for driving the movable cabin to enter and exit the storage cavity is arranged between the first partition plate and the movable cabin, an external heating structure for anti-freezing is arranged on the front wall of the ground box at the opening part of the storage cavity, a shutdown cavity is arranged on the upper wall of the movable cabin, a second partition plate is fixedly connected to the inner side wall of the shutdown cavity, a lifting platform is arranged on the upper wall of the second partition plate through a second driving structure, a monitoring unmanned aerial vehicle for assisting in monitoring the temperature of the intelligent water supply pipe is arranged on the upper wall of the lifting platform, an installation frame is rotatably connected to the top of the ground box, a photovoltaic charging structure for charging the battery pack is arranged on the upper wall of the installation frame, and an adjusting structure for driving the installation frame to adjust the pitch angle is arranged between the upper wall of the ground box and the installation frame.

[0007] Preferably, the monitoring unmanned aerial vehicle is provided with a monitoring device on the lower wall and close to the left end position, two groups of chassis are arranged on the lower wall of the monitoring unmanned aerial vehicle and located on the front and rear sides of the monitoring device, a magnetic attraction structure for fixing the position of the monitoring unmanned aerial vehicle when the movable cabin moves is arranged between the chassis and the lifting platform, and a wireless charging structure for wirelessly charging the monitoring unmanned aerial vehicle is further arranged between the monitoring unmanned aerial vehicle and the lifting platform.

[0008] Preferably, the first driving structure comprises a first electric telescopic rod and two groups of first guide rods, the first electric telescopic rod is fixedly connected to the rear wall of the first partition plate, the shaft end of the first electric telescopic rod extends through the inner wall of the first partition plate and is fixedly connected to the rear wall of the movable cabin, and the two groups of first guide rods are fixedly connected to the rear wall of the movable cabin and extend through the inner wall of the first partition plate and are slidably connected to the inner wall of the first partition plate.

[0009] Preferably, the second driving structure comprises a second electric telescopic rod and two groups of second guide rods, the second electric telescopic rod is fixedly connected to the lower wall of the second partition plate, the shaft end of the second electric telescopic rod extends through the inner wall of the second partition plate and is fixedly connected to the lower wall of the lifting platform, and the two groups of second guide rods are fixedly connected to the lower wall of the lifting platform and are located on the left and right sides of the second electric telescopic rod respectively, and the two groups of second guide rods extend through the second partition plate and are slidably connected to the second partition plate.

[0010] Preferably, the photovoltaic charging structure is a photovoltaic panel, the photovoltaic panel is fixedly connected to the upper wall of the mounting frame, and the photovoltaic panel is electrically connected to the battery pack through a charging protection circuit.

[0011] Preferably, the adjusting structure comprises a motor, a screw rod, a screw sleeve and a support arm, the upper wall of the ground box body is provided with a sunken groove, the sunken groove is located below the mounting frame, the screw rod is rotatably connected between the inner front wall and the inner rear wall of the sunken groove, the front end of the screw rod extends through the inner front wall of the sunken groove and extends into the ground box body, one end of the screw rod extending into the ground box body is fixedly connected with a second gear, the motor is fixedly connected to the inner upper wall of the ground box body through a fixed seat, the shaft end of the motor extending out is fixedly connected with a first gear, the first gear and the second gear are meshed with each other, the screw sleeve is threadedly connected to the outer wall of the screw rod, the screw sleeve is located in the sunken groove, the lower wall of the screw sleeve is rotatably connected with a roller, the inner lower wall of the sunken groove is provided with a guide groove matched with the outer diameter of the roller, the circumferential outer wall of the roller is rollingly connected with the inner wall of the guide groove, the upper wall of the screw sleeve is fixedly connected with a first rotating seat, the lower wall of the mounting frame and close to the rear wall of the sunken groove is fixedly connected with a second rotating seat, and the support arm is rotatably connected between the first rotating seat and the second rotating seat.

[0012] Preferably, the external heating structure comprises a plurality of anti-freezing strips and electric heating wires, a plurality of anti-freezing strips are fixedly connected to the front wall of the ground box body and the upper wall of the ground box body respectively, the anti-freezing strip on the front wall of the ground box body is located at the front opening of the storage cavity and is slidably connected to the outer wall of the movable cabin, the anti-freezing strip on the upper wall of the ground box body is located below the mounting frame and the mounting frame is projected on the anti-freezing strip, and a plurality of electric heating wires are arranged in the inner wall of one group of anti-freezing strips.

[0013] Preferably, the magnetic attraction structure comprises two groups of magnetic attraction blocks and a group of electromagnets, the two groups of magnetic attraction blocks are arranged on a group of bottom frame lower walls respectively, and the electromagnet is arranged on the inner wall of the lifting platform.

[0014] Preferably, the wireless charging structure comprises a wireless charging coil and a wireless power receiving coil, the wireless charging coil is arranged on the inner side wall of the lifting platform and located at the planar projection center of the lifting platform, and the wireless power receiving coil is fixedly connected to the lower wall of the monitoring unmanned aerial vehicle.

[0015] Preferably, the upper surface of the lifting platform is provided with a guide mark for assisting the parking of the monitoring unmanned aerial vehicle.

[0016] The application provides a pipeline temperature monitoring system in an alpine region.

[0017] 1. Compared with the prior art, the pipeline temperature monitoring system in the alpine region adopts a DTS system fusion monitoring device carrying monitoring unmanned aerial vehicle monitoring pipeline technology, multi-technology fusion and operation and maintenance mode innovation, so that the performance and reliability of the DTS system in the alpine water supply pipeline monitoring can be greatly improved, and the whole life cycle cost is reduced. The improved temperature monitoring system can not only more accurately warn risks, but also can provide data-driven decision support for pipeline maintenance, and becomes a benchmark solution for intelligent infrastructure in the alpine region.

[0018] 2. Compared with the prior art, the pipeline temperature monitoring system in the alpine region is provided with a plurality of unmanned monitoring stations along the line, each unmanned monitoring station is provided with two groups of monitoring unmanned aerial vehicles, the two groups of monitoring unmanned aerial vehicles are alternately started, the problem of insufficient endurance caused by battery capacity attenuation of the monitoring unmanned aerial vehicle in the alpine region is greatly reduced, the purpose of pipeline inspection between the two groups of unmanned monitoring stations can be met, the internal heating device is arranged in the unmanned monitoring station, the internal temperature of the unmanned monitoring station can be improved, and the charging efficiency of the monitoring unmanned aerial vehicle in the parking cavity and the battery pack in the underground box can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the application;

[0020] Figure 2 It is a partial sectional view of the connection structure between the ground box and the mounting frame of the application;

[0021] Figure 3 It is a partial sectional view of the connection structure between the ground box and the mounting frame of the application; Figure 2 It is a partial enlarged view of A in the application;

[0022] Figure 4 It is a partial enlarged view of B in the application; Figure 2

[0023] Figure 5 ​It is a partial section view of the top surface of the connecting structure of the ground box and the movable cabin of the application.

[0024] Figure 6 It is the underground box of the application Figure 5 It is a partial enlarged view at C.

[0025] Figure 7 It is a schematic view of the top surface of the monitoring unmanned aerial vehicle of the application.

[0026] Figure 8 It is a schematic view of the connecting structure of the movable cabin and the lifting platform of the application.

[0027] Figure 9 It is a partial section view of the connecting structure of the movable cabin and the lifting platform of the application.

[0028] Figure 10 It is a section view of the internal structure of the underground box of the application.

[0029] 1, foundation; 2, underground box; 201, maintenance door; 202, thermal insulation layer; 3, ground box; 4, movable cabin; 401, parking cavity; 5, anti-freezing strip; 501, electric heating wire; 6, mounting frame; 7, photovoltaic panel; 8, sink groove; 801, guide groove; 9, screw rod; 10, fixed seat; 11, motor; 12, first gear; 13, second gear; 14, screw sleeve; 15, first rotating seat; 16, support arm; 17, roller; 18, second rotating seat; 19, first partition; 20, first electric telescopic rod; 21, first guide rod; 22, lifting platform; 23, monitoring unmanned aerial vehicle; 24, guide mark; 25, undercarriage; 26, magnetic block; 27, monitoring equipment; 28, wireless power receiving coil; 29, second partition; 30, second guide rod; 31, second electric telescopic rod; 32, electromagnet; 33, wireless charging coil; 34, battery pack; 35, control cabinet. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0031] Embodiment:

[0032] As Figures 1 to 10As shown, the embodiment of the present application provides a pipeline temperature monitoring system in alpine regions, which comprises a cloud data platform, a communication system, an intelligent water supply pipe, an unmanned monitoring station and two groups of internal heating devices. The intelligent water supply pipe comprises a pipe body and a heating cable, a three-phase power cable, a signal cable and a distributed optical fiber temperature sensing system arranged inside the pipe body. The unmanned monitoring station is composed of a foundation 1, an underground box 2 arranged below the foundation 1 and a ground box 3 arranged above the foundation 1. The upper wall of the foundation 1 is flush with the ground. The underground box 2 is internally provided with a battery pack 34 and a control cabinet 35. A maintenance door 201 for maintenance is arranged on the side wall of the underground box 2. The soil layer outside the maintenance door 201 can be hollowed out and covered with a cover to facilitate maintenance. The battery pack 34 is arranged below the ground and can achieve good heat preservation effect in combination with a heat preservation layer 202, so as to resist the influence of low temperature in alpine regions. The distributed optical fiber temperature sensing system, namely DTS system, measures temperature by using Raman effect. Laser pulses are incident into the optical fiber, backscattered light is obtained at the sending end, and analysis is performed. The intensity of Raman scattered light is proportional to temperature. The temperature distributed along the optical fiber is obtained by measuring the intensity of scattered light. The positioning of temperature points is obtained by measuring the time of backscattered light returning to the starting end. Similar to radar echo technology, the temperature of the optical fiber along the line can be continuously measured.

[0033] In order to improve the charging efficiency and protect the monitoring unmanned aerial vehicle 23, the inner side wall of the ground box 3, the inner side wall of the underground box 2 and the side of the maintenance door 201 facing the inside of the underground box 2 are all provided with a heat preservation layer 202. The two groups of internal heating devices are arranged inside the ground box 3 and the underground box 2 respectively. The inside of the unmanned monitoring station is heat preserved by the heat preservation layer 202, and heated by the internal heating devices, so as to maintain the temperature inside the unmanned monitoring station, thereby improving the charging efficiency of the battery pack 34 and the monitoring unmanned aerial vehicle 23.

[0034] In order to drive the movable cabin 4 to enter and exit the storage cavity, the front wall of the ground box 3 is provided with two groups of storage cavities in turn from top to bottom, the inner side wall of the storage cavity is slidably connected with the movable cabin 4, the inner side wall of the storage cavity is fixedly connected with the first partition plate 19, and the first driving structure for driving the movable cabin 4 to enter and exit the storage cavity is arranged between the first partition plate 19 and the movable cabin 4. The first driving structure comprises a first electric telescopic rod 20 and two groups of first guide rods 21. The first electric telescopic rod 20 is fixedly connected to the rear wall of the first partition plate 19. The shaft end of the first electric telescopic rod 20 extends through the inner wall of the first partition plate 19 and is fixedly connected to the rear wall of the movable cabin 4. The two groups of first guide rods 21 are both fixedly connected to the rear wall of the movable cabin 4. The ends of the two groups of first guide rods 21 away from the movable cabin 4 both extend through the inner wall of the first partition plate 19 and are slidably connected thereto. The upper wall of the movable cabin 4 is provided with a parking cavity 401. The inner side wall of the parking cavity 401 is fixedly connected with a second partition plate 29. The second partition plate 29 is provided with a lifting platform 22 through a second driving structure. The upper surface of the lifting platform 22 is provided with a guide mark 24 for assisting in monitoring the parking of the unmanned aerial vehicle 23. When the unmanned aerial vehicle 23 is launched and recovered, the first electric telescopic rod 20 is extended to drive the movable cabin 4 to extend out of the storage cavity, so that the upper part of the parking cavity 401 is not blocked, thereby smoothly launching or recovering the unmanned aerial vehicle 23. The guide mark 24 can improve the landing accuracy of the unmanned aerial vehicle 23.

[0035] In order to avoid that the movable cabin 4 and the mounting frame 6 are frozen and cannot be moved, the front wall of the ground box 3 and the mounting frame 6 are provided with an external heating structure for anti-freezing. The external heating structure comprises a plurality of anti-freezing strips 5 and electric heating wires 501. The plurality of anti-freezing strips 5 are fixedly connected to the front wall of the ground box 3 and the upper wall of the ground box 3, respectively. The anti-freezing strip 5 on the front wall of the ground box 3 is located at the front opening of the storage cavity and is slidably connected with the outer wall of the movable cabin 4. The anti-freezing strip 5 on the upper wall of the ground box 3 is located below the mounting frame 6, and the mounting frame 6 is projected on the anti-freezing strip 5. A plurality of electric heating wires 501 are arranged in the inner side wall of one group of anti-freezing strips 5. After the electric heating wire 501 is electrified and generates heat, the front wall of the movable cabin 4 and the ground box 3 and the outer edge of the mounting frame 6 and the ground box 3 can be prevented from being frozen.

[0036] In order to realize the lifting action of the lifting platform 22, the second driving structure includes a second electric telescopic rod 31 and two groups of second guide rods 30, the second electric telescopic rod 31 is fixedly connected to the lower wall of the second partition plate 29, the second electric telescopic rod 31 extends through the inner wall of the second partition plate 29 and is fixedly connected to the lower wall of the lifting platform 22, the two groups of second guide rods 30 are fixedly connected to the lower wall of the lifting platform 22 and are respectively located on the left and right sides of the second electric telescopic rod 31, and the ends of the two groups of second guide rods 30 away from the lifting platform 22 all penetrate the second partition plate 29 and are all in sliding connection with the second partition plate 29, when the monitoring unmanned aerial vehicle 23 is put or recovered, the first electric telescopic rod 20 is used to drive the movable cabin 4 to extend out of the storage cavity, and then the second electric telescopic rod 31 is used to drive the lifting platform 22 to rise until the upper surface of the lifting platform 22 is flush with the upper wall of the movable cabin 4, so that the monitoring unmanned aerial vehicle 23 is conveniently put and recovered;

[0037] In order to realize the multi-technology fusion of pipeline temperature monitoring, the upper wall of the lifting platform 22 is provided with a monitoring unmanned aerial vehicle 23 for assisting in monitoring the temperature of the intelligent water supply pipe, and the lower wall of the monitoring unmanned aerial vehicle 23 and close to the left end position is provided with a monitoring device 27, the monitoring unmanned aerial vehicle 23 carrying the monitoring device 27 by using the DTS system is used to monitor the pipeline, the monitoring device 27 can be a common thermal imaging device on the market, the innovation of multi-technology fusion and operation and maintenance mode can greatly improve the performance and reliability of the DTS system in the monitoring of high-cold water supply pipeline, and can reduce the whole life cycle cost, two groups of monitoring unmanned aerial vehicles 23 are arranged at each unmanned monitoring station, and the two groups of monitoring unmanned aerial vehicles 23 are alternately started, which greatly reduces the problem that the battery capacity of the monitoring unmanned aerial vehicle 23 is attenuated in the high-cold area, resulting in insufficient endurance, and can meet the purpose of pipeline inspection between two groups of unmanned monitoring stations;

[0038] In order to continuously obtain clean energy, the ground box body 3 is rotatably connected with a mounting frame 6 on the top, the mounting frame 6 is provided with a photovoltaic charging structure for charging the battery pack 34, the photovoltaic charging structure is a photovoltaic panel 7, the photovoltaic panel 7 is fixedly connected to the upper wall of the mounting frame 6, and the photovoltaic panel 7 is electrically connected to the battery pack 34 through a charging protection circuit, and the battery pack 34 can be continuously charged through photoelectric conversion of the photovoltaic panel 7 to provide clean energy;

[0039] In order to adjust the pitch angle of the photovoltaic charging structure, the adjusting structure for driving the mounting frame 6 to adjust the pitch angle is arranged between the upper wall of the ground box 3 and the mounting frame 6, the adjusting structure comprises a motor 11, a screw rod 9, a screw sleeve 14 and a support arm 16, the upper wall of the ground box 3 is provided with a sink groove 8, the sink groove 8 is located below the mounting frame 6, the screw rod 9 is rotatably connected between the inner front wall and the inner rear wall of the sink groove 8, the front end of the screw rod 9 penetrates the inner front wall of the sink groove 8 and extends into the inside of the ground box 3, the end of the screw rod 9 extending into the inside of the ground box 3 is fixedly connected with a second gear 13, the motor 11 is fixedly connected to the inner upper wall of the ground box 3 through a fixed seat 10, the motor 11 is fixedly connected with a first gear 12 at the extending shaft end, the first gear 12 and the second gear 13 are meshed with each other, the screw sleeve 14 is threadedly connected to the outer wall of the screw rod 9, the screw sleeve 14 is located in the inside of the sink groove 8, the lower wall of the screw sleeve 14 is rotatably connected with a roller 17, the inner lower wall of the sink groove 8 is provided with a guide groove 801 matched with the outer diameter of the roller 17, the circumferential outer wall of the roller 17 is rollingly connected with the inner wall of the guide groove 801, the upper wall of the screw sleeve 14 is fixedly connected with a first rotating seat 15, the lower wall of the mounting frame 6 and close to the rear wall of the sink groove 8 is fixedly connected with a second rotating seat 18, the support arm 16 is rotatably connected between the first rotating seat 15 and the second rotating seat 18, the motor 11 is rotated to drive the screw rod 9 to rotate, the screw rod 9 drives the screw sleeve 14 to move along the axial direction of the screw rod 9 when the screw rod 9 rotates, and then the mounting frame 6 is driven by the support arm 16 to rotate along the connection point of the mounting frame 6 and the ground box 3, so as to adjust the pitch angle of the photovoltaic panel 7 to obtain the best photoelectric conversion efficiency;

[0040] In order to monitor the unmanned aerial vehicle 23 from shaking when the movable cabin 4 moves, two groups of chassis 25 are arranged on the lower wall of the monitoring unmanned aerial vehicle 23 and located on the front and rear sides of the monitoring device 27, the magnetic attraction structure for fixing the position of the monitoring unmanned aerial vehicle 23 when the movable cabin 4 moves is arranged between the chassis 25 and the lifting platform 22, the magnetic attraction structure comprises two groups of magnetic attraction blocks 26 and a group of electromagnets 32, the two groups of magnetic attraction blocks 26 are arranged on the lower wall of a group of chassis 25 respectively, the electromagnet 32 is arranged on the inner wall of the lifting platform 22, the electromagnet 32 is annular and the annular axis is coincided with the axis of the lifting platform 22, before being launched and after being recycled, the electromagnet 32 is electrified to generate magnetism, the monitoring unmanned aerial vehicle 23 is attracted by adsorbing the two groups of magnetic attraction blocks 26, so as to avoid the monitoring unmanned aerial vehicle 23 from shaking when the movable cabin 4 moves forward and backward, when it is needed to be launched, the electromagnet 32 is de-energized to lose magnetism, so that the monitoring unmanned aerial vehicle 23 takes off without restriction;

[0041] In order to facilitate charging of the monitoring unmanned aerial vehicle 23, a wireless charging structure for wirelessly charging the monitoring unmanned aerial vehicle 23 is further arranged between the monitoring unmanned aerial vehicle 23 and the lifting platform 22, and the wireless charging structure comprises a wireless charging coil 33 and a wireless power receiving coil 28. The wireless charging coil 33 is arranged on the inner side wall of the lifting platform 22 and located at the top view projection center of the lifting platform 22. The wireless power receiving coil 28 is fixedly connected to the lower wall of the monitoring unmanned aerial vehicle 23. Through the wireless charging structure, the monitoring unmanned aerial vehicle 23 can be charged after landing on the lifting platform 22.

[0042] Working principle: distributed optical fiber temperature sensing system, namely DTS system, DTS utilizes Raman effect to measure temperature, laser pulse is incident into optical fiber, backscattering light is obtained at sending end and is analyzed, intensity of Raman scattering light is directly proportional to temperature.The temperature distribution along the optical fiber is obtained by measuring the scattered light intensity, and the positioning of the temperature points is obtained by measuring the time of the backscattered light returning to the starting end, similar to radar echo technology, which can continuously measure the temperature of the optical fiber along the line. The upper wall of the lifting platform 22 is provided with a monitoring unmanned aerial vehicle 23 for assisting in monitoring the temperature of the intelligent water supply pipe, and the monitoring unmanned aerial vehicle 23 is provided with a monitoring device 27 on the lower wall and close to the left end position. The monitoring unmanned aerial vehicle 23 carrying the monitoring device 27 is used to monitor the pipeline, and the monitoring device 27 can be a common thermal imaging device on the market. The innovation of multi-technology fusion and operation and maintenance mode can greatly improve the performance and reliability of the DTS system in the monitoring of high-cold water supply pipelines, while reducing the life cycle cost. Each unmanned monitoring station is provided with two groups of monitoring unmanned aerial vehicles 23, which are alternately used to greatly reduce the problem of insufficient endurance caused by the attenuation of the battery capacity of the monitoring unmanned aerial vehicle 23 in the high-cold area, and can meet the purpose of pipeline inspection between the two groups of unmanned monitoring stations. The inside of the unmanned monitoring station is insulated by the insulation layer 202, and heated by the internal heating device to maintain the temperature inside the unmanned monitoring station, thereby improving the charging efficiency of the battery pack 34 and the monitoring unmanned aerial vehicle 23. When the monitoring unmanned aerial vehicle 23 is launched and recovered, the first electric telescopic rod 20 is extended to drive the movable cabin 4 to extend out of the storage cavity, so that there is no obstruction above the parking cavity 401, thereby smoothly launching or recovering the monitoring unmanned aerial vehicle 23. The guide sign 24 can improve the landing accuracy of the monitoring unmanned aerial vehicle 23. After the electric heating wire 501 is powered on, the movable cabin 4 and the ground box 3 can be prevented from being frozen at the connection between the front wall of the movable cabin 4 and the ground box 3 and between the outer edge of the mounting frame 6 and the ground box 3. When launching or recovering the monitoring unmanned aerial vehicle 23, the first electric telescopic rod 20 drives the movable cabin 4 to extend out of the storage cavity, and then the second electric telescopic rod 31 drives the lifting platform 22 to rise until the upper surface of the lifting platform 22 is flush with the upper wall of the movable cabin 4, thereby facilitating the launching and recovery of the monitoring unmanned aerial vehicle 23. The photovoltaic panel 7 is electrically connected to the battery pack 34 through a charging protection circuit, and can continuously charge the battery pack 34 through photoelectric conversion of the photovoltaic panel 7 to provide clean energy. The motor 11 rotates to drive the screw rod 9 to rotate, and the screw rod 9 drives the screw sleeve 14 to move axially along the screw rod 9, thereby driving the mounting frame 6 to rotate along the connection point between the mounting frame 6 and the ground box 3 through the support arm 16, to adjust the pitch angle of the photovoltaic panel 7 and obtain the best photoelectric conversion efficiency. Before launching and after recovery, the electromagnet 32 is powered on to generate a magnetic field, and the monitoring unmanned aerial vehicle 23 is attracted by the two groups of magnetic suction blocks 26 to prevent the monitoring unmanned aerial vehicle 23 from shaking when the movable cabin 4 moves forward and backward. When launching is needed, the electromagnet 32 is powered off to lose the magnetic field, so that the monitoring unmanned aerial vehicle 23 takes off without restriction. Through the wireless charging structure, the monitoring unmanned aerial vehicle 23 can be charged after landing on the lifting platform 22.

[0043] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A pipeline temperature monitoring system for high-altitude and cold regions, characterized in that: The system includes a cloud data platform, a communication system, intelligent water supply pipes, an unmanned monitoring station, and two sets of internal heating devices. The intelligent water supply pipes include the pipe body and heating cables, three-phase power cables, signal cables, and a distributed fiber optic temperature sensing system installed inside the pipe body. The unmanned monitoring station consists of a foundation (1), an underground box (2) located below the foundation (1), and a ground box (3) located above the foundation (1). The upper wall of the foundation (1) is flush with the ground. The underground box (2) The underground enclosure (2) is equipped with a battery pack (34) and a control cabinet (35). The side wall of the underground enclosure (2) is provided with a maintenance door (201) for maintenance. The inner side wall of the ground enclosure (3), the inner side wall of the underground enclosure (2), and the side of the maintenance door (201) facing the interior of the underground enclosure (2) are all provided with a heat insulation layer (202). The two sets of internal heating devices are respectively installed inside the ground enclosure (3) and the underground enclosure (2). The front wall of the ground enclosure (3) is provided with two sets of storage cavities arranged vertically. The inner wall of the storage cavity is slidably connected to a movable chamber (4), and the inner wall of the storage cavity is fixedly connected to a first partition (19). A first driving structure for driving the movable chamber (4) to enter and exit the storage cavity is provided between the first partition (19) and the movable chamber (4). An external heating structure for antifreeze is provided on the front wall of the ground box (3) and at the opening of the storage cavity. A stopping chamber (401) is provided on the upper wall of the movable chamber (4), and a second partition (29) is fixedly connected to the inner wall of the stopping chamber (401). The upper wall of the second partition (29) is provided with a lifting platform (22) through the second driving structure. The upper wall of the lifting platform (22) is provided with a monitoring drone (23) for assisting in monitoring the temperature of the intelligent water supply pipe. The top of the ground box (3) is rotatably connected with an installation frame (6). The upper wall of the installation frame (6) is provided with a photovoltaic charging structure for charging the battery pack (34). An adjustment structure for driving the installation frame (6) to adjust the pitch angle is provided between the upper wall of the ground box (3) and the installation frame (6).

2. The pipeline temperature monitoring system for high-altitude and cold regions according to claim 1, characterized in that: A monitoring device (27) is installed on the lower wall of the monitoring drone (23) near the left end. Two sets of base frames (25) are installed on the lower wall of the monitoring drone (23) and on both sides in front of and behind the monitoring device (27). A magnetic attraction structure is provided between the base frame (25) and the lifting platform (22) for fixing the position of the monitoring drone (23) when the mobile cabin (4) moves. A wireless charging structure for wirelessly charging the monitoring drone (23) is also provided between the monitoring drone (23) and the lifting platform (22).

3. The pipeline temperature monitoring system for high-altitude and cold regions according to claim 2, characterized in that: The first drive structure includes a first electric telescopic rod (20) and two sets of first guide rods (21). The first electric telescopic rod (20) is fixedly connected to the rear wall of the first partition (19). The end of the first electric telescopic rod (20) extends through the inner wall of the first partition (19) and is fixedly connected to the rear wall of the movable cabin (4). The two sets of first guide rods (21) are fixedly connected to the rear wall of the movable cabin (4). The ends of the two sets of first guide rods (21) away from the movable cabin (4) both extend through the inner wall of the first partition (19) and are slidably connected thereto.

4. A pipeline temperature monitoring system for high-altitude and cold regions according to claim 3, characterized in that: The second drive structure includes a second electric telescopic rod (31) and two sets of second guide rods (30). The second electric telescopic rod (31) is fixedly connected to the lower wall of the second partition (29). The end of the extended shaft of the second electric telescopic rod (31) passes through the inner wall of the second partition (29) and is fixedly connected to the lower wall of the lifting platform (22). The two sets of second guide rods (30) are fixedly connected to the lower wall of the lifting platform (22) and are located on the left and right sides of the second electric telescopic rod (31), respectively. The ends of the two sets of second guide rods (30) away from the lifting platform (22) pass through the second partition (29) and are slidably connected to it.

5. A pipeline temperature monitoring system for high-altitude and cold regions according to claim 4, characterized in that: The photovoltaic charging structure is a photovoltaic panel (7), which is fixedly connected to the upper wall of the mounting frame (6). The photovoltaic panel (7) is electrically connected to the battery pack (34) through a charging protection circuit.

6. A pipeline temperature monitoring system for high-altitude and cold regions according to claim 5, characterized in that: The adjustment structure includes a motor (11), a screw (9), a screw sleeve (14), and a support arm (16). A recess (8) is provided on the upper wall of the ground box (3). The recess (8) is located below the mounting frame (6). The screw (9) is rotatably connected between the inner front wall and the inner rear wall of the recess (8). The front end of the screw (9) penetrates the inner front wall of the recess (8) and extends into the ground box (3). A second gear (13) is fixedly connected to one end of the screw (9) extending into the ground box (3). The motor (11) is fixedly connected to the inner upper wall of the ground box (3) via a fixing seat (10). A first gear (12) is fixedly connected to the end of the motor (11) extending from its shaft. (12) meshes with the second gear (13). The screw sleeve (14) is threadedly connected to the outer wall of the screw (9). The screw sleeve (14) is located inside the sinker (8). The lower wall of the screw sleeve (14) is rotatably connected to a roller (17). The lower inner wall of the sinker (8) is provided with a guide groove (801) that matches the outer diameter of the roller (17). The outer circumferential wall of the roller (17) is rolledly connected to the inner wall of the guide groove (801). The upper wall of the screw sleeve (14) is fixedly connected to a first rotating seat (15). The lower wall of the mounting frame (6) and the position near the rear wall of the sinker (8) are fixedly connected to a second rotating seat (18). The support arm (16) is rotatably connected between the first rotating seat (15) and the second rotating seat (18).

7. A pipeline temperature monitoring system for high-altitude and cold regions according to claim 6, characterized in that: The external heating structure includes multiple sets of antifreeze strips (5) and electric heating wires (501). The multiple sets of antifreeze strips (5) are fixedly connected to the front wall of the ground box (3) and the upper wall of the ground box (3). The antifreeze strips (5) on the front wall of the ground box (3) are located at the front opening of the storage cavity and are slidably connected to the outer wall of the active cabin (4). The antifreeze strips (5) on the upper wall of the ground box (3) are located below the mounting frame (6) and the top view projection of the mounting frame (6) coincides with the antifreeze strips (5). The multiple sets of electric heating wires (501) are respectively arranged on the inner side wall of a set of antifreeze strips (5).

8. A pipeline temperature monitoring system for high-altitude and cold regions according to claim 7, characterized in that: The magnetic attraction structure includes two sets of magnetic blocks (26) and a set of electromagnets (32). The two sets of magnetic blocks (26) are respectively set on the lower wall of a set of base frames (25). The electromagnets (32) are set on the inner wall of the lifting platform (22). The electromagnets (32) are annular and the axis of the annulus coincides with the axis of the lifting platform (22).

9. A pipeline temperature monitoring system for high-altitude and cold regions according to claim 8, characterized in that: The wireless charging structure includes a wireless charging coil (33) and a wireless receiving coil (28). The wireless charging coil (33) is located on the inner wall of the lifting platform (22) and at the center of the top-view projection of the lifting platform (22). The wireless receiving coil (28) is fixedly connected to the lower wall of the monitoring drone (23).

10. A pipeline temperature monitoring system for high-altitude and cold regions according to claim 9, characterized in that: The upper surface of the lifting platform (22) is provided with guide signs (24) for assisting in monitoring the shutdown of the drone (23).

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