Intelligent traction system for underground power cable pipeline

Abstract

The invention relates to the technical field of traction of power cables in underground pipelines, and discloses an intelligent traction system for underground power cable pipelines, which comprises a plurality of intelligent traction heads, an underground communication network, a ground data processing center and a plurality of underground power cable pipelines, the underground communication network comprises a double-end lock catch traction rope, and a plurality of signal receivers are installed on the double-end lock catch traction rope. According to the system, the intelligent traction head, the underground communication network and the ground data processing center are designed, so that key parameters in the underground power cable traction process can be effectively sensed in real time; change of traction force is monitored in real time, and cable damage or traction head breakage caused by too large tension is prevented; and meanwhile, wired and wireless hybrid networking is adopted, so that stable data transmission is ensured, constructors can obtain traction state information in time, the scheduling efficiency and the construction safety are improved, and digital and intelligent management of the construction process is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of power cable traction in underground pipelines, and in particular to an intelligent traction system for underground power cable pipelines. Background Art

[0002] In urban power and communications system construction, cables are typically laid through pre-buried underground conduits. Cable pulling is a critical step in cable installation, typically using a pulling head to pull the cable through long or winding underground conduits. As a crucial structure connecting the pulling equipment to the cable, the performance of the pulling head directly impacts construction efficiency and safety.

[0003] Existing traction head devices are mostly mechanical and lack the ability to sense key parameters of the traction process in real time. This is particularly true during long-distance or complex traction, as they are unable to monitor changes in traction force in real time. This can easily lead to cable damage or traction head breakage due to excessive tension. Furthermore, because traction operations typically occur in confined underground spaces, traditional communication methods experience severe signal attenuation in pipelines, making it difficult for construction personnel to obtain timely traction status information. This impacts scheduling efficiency and construction safety, and is also detrimental to the digital and intelligent management of the construction process.

[0004] Therefore, it is necessary to further solve the above problems. The applicant has proposed an intelligent traction system for underground power cable pipelines. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an intelligent traction system for underground power cable pipelines, which solves the problem proposed in the above background technology that there is a lack of real-time perception capability of key parameters of the traction process, especially in long-distance or complex path traction, it is impossible to monitor the changes in traction force in real time, and it is easy to cause cable damage or traction head breakage due to excessive pulling force; and because traction operations are usually carried out in a confined underground space, traditional communication methods suffer from severe signal attenuation in the pipeline, making it difficult for construction personnel to obtain traction status information in a timely manner, affecting scheduling efficiency and construction safety, and is also not conducive to the digital and intelligent management of the construction process.

[0006] To achieve the above object, the present invention provides the following technical solutions: An intelligent traction system for underground power cable pipelines, the system comprising a plurality of intelligent traction heads, an underground communication network, a ground data processing center and a plurality of underground power cable pipelines; The underground communication network includes a double-ended locking traction rope, which is fixedly installed on the top of the inner wall of one of the underground power cable pipelines. Several signal receivers are installed on the double-ended locking traction rope. The several signal receivers are connected to each other through a network cable power supply composite flexible cable. The signal receiver located at the front end of the pipeline is connected to a data temporary storage power supply device through the network cable power supply composite flexible cable. The data temporary storage power supply device is connected to the ground data processing center signal; A plurality of intelligent traction heads are provided inside an underground power cable pipeline adjacent to one of the underground power cable pipelines, and two adjacent intelligent traction heads are connected by a traction rope; A lithium battery is installed at the bottom end of one side of the intelligent traction head to facilitate power supply for sensors, cameras, and signal transmitters. A fixing column is vertically installed in the middle of the intelligent traction head. One side of the fixing column is connected to one end of the S-shaped tension sensor through a first fixing screw, and the other end of the S-shaped tension sensor is installed with a U-shaped connecting ring through a second fixing screw. A nine-axis high-precision angle sensor is fixedly installed in the middle of the other side of the intelligent traction head. An RTK wireless locator is installed on one side of the nine-axis high-precision angle sensor, which can record the position information of the traction head in real time. A signal transmitter is fixedly installed on the top of the other side of the intelligent traction head, which is designed using LoRa wireless communication technology. Cameras are symmetrically installed on the side walls of the other side of the intelligent traction head. The cameras are wide-angle night vision waterproof cameras that shoot the pipeline environment in front at a frame rate of 5FPS to monitor obstacles such as foreign objects and deformation in the pipeline.

[0007] As a further solution of the present invention: the distance between several of the signal receivers is 30m, and several of the signal receivers are equipped with LoRa receiving modules, which are convenient for establishing a wireless connection with the smart traction head and receiving data sent by the signal transmitter in the smart traction head.

[0008] As a further solution of the present invention: a plurality of the signal receivers are fixedly provided with a wear-resistant plastic shell on the outside, and the wear-resistant plastic shell is an IP67 waterproof and wear-resistant plastic shell, which can effectively encapsulate the signal receiver, play a protective role, and facilitate use.

[0009] As a further solution of the present invention: a waterproof aviation plug is fixedly installed at the connection between the wear-resistant plastic shell and the network cable power composite flexible cable, which can play a waterproof and dustproof role.

[0010] As a further solution of the present invention: an anti-twist device is installed between the traction end of the intelligent traction head and the traction rope to prevent the cable from twisting during the traction process and ensure that the traction direction is stable.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the system of the present invention adopts a closed-loop working mode of perception-transmission-processing by designing an intelligent traction head, an underground communication network and a ground data processing center, wherein the intelligent traction head is responsible for pulling the cable and perceiving the working data in real time, and is responsible for the perception function; the underground communication network will transmit the working data perceived by the intelligent traction head to the ground, and is responsible for the transmission function; the ground data center will process the working data transmitted to the ground by the underground communication network in real time, and is responsible for the processing function, ensuring that the intelligent traction head works safely and stably underground, and can effectively perceive the key parameters of the underground power cable traction process in real time, monitor the changes in traction force in real time, and prevent cable damage or traction head breakage due to excessive tension; at the same time, a wired + wireless hybrid network is adopted to ensure stable data transmission, so that construction personnel can obtain traction status information in a timely manner, improve scheduling efficiency and construction safety, and facilitate the digital and intelligent management of the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the overall modular structure of the system of the present invention; Figure 2 It is the overall workflow diagram of the system of the present invention; Figure 3 This is a flow chart of data collection for the intelligent traction head of the system of the present invention.

[0013] In the figure: 1. Data temporary storage power supply device; 2. Signal receiver; 3. Wear-resistant plastic shell; 4. Waterproof aviation plug; 5. Anti-twist device; 6. Double-head locking traction rope; 7. Underground power cable pipeline; 8. Network cable power composite flexible cable; 9. Ground data processing center; 11.; 12. Lithium battery; 13. S-type tension sensor; 14. Nine-axis high-precision angle sensor; 15. Camera; 16. RTK wireless locator; 17. Signal transmitter; 18. Traction rope; 19. Fixing column; 20. First fixing screw. DETAILED DESCRIPTION

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] Example 1 See also Figure 1-3 , the present invention provides an underground power cable pipeline intelligent traction system, the system includes a plurality of intelligent traction heads, an underground communication network, a ground data processing center and a plurality of underground power cable pipelines 7; The underground communication network includes a double-ended locking traction rope 6, which is fixedly installed on the top of the inner wall of one of the underground power cable pipes 7. A plurality of signal receivers 2 are installed on the double-ended locking traction rope 6. The plurality of signal receivers 2 are connected to each other through a network cable power composite flexible cable 8. The signal receiver 2 located at the front end of the pipe is connected to a data temporary storage power supply device 1 through the network cable power composite flexible cable 8. The data temporary storage power supply device 1 is connected to a ground data processing center 9 by signal. A plurality of intelligent traction heads are provided inside the underground power cable conduit 7 adjacent to one of the underground power cable conduits 7 , and two adjacent intelligent traction heads are connected by a traction rope 18 ; A lithium battery 12 is installed at the bottom end of one side of the intelligent traction head, a fixing column 19 is installed vertically in the middle of the intelligent traction head, one side of the fixing column 19 is connected to one end of the S-shaped tension sensor 13 through a first fixing screw 20, and the other end of the S-shaped tension sensor 13 is installed with a U-shaped connecting ring 10 through a second fixing screw 11, a nine-axis high-precision angle sensor 14 is fixedly installed in the middle of the other side of the intelligent traction head, an RTK wireless locator 16 is installed on one side of the nine-axis high-precision angle sensor 14, a signal transmitter 17 is fixedly installed on the top of the other side of the intelligent traction head, and a camera 15 is symmetrically installed on the upper and lower side walls of the other side of the intelligent traction head.

[0016] Furthermore, the spacing between several signal receivers 2 is 30m, and several signal receivers 2 are equipped with LoRa receiving modules, which are convenient for establishing wireless connection with the intelligent traction head and receiving data sent by the signal transmitter 17 in the intelligent traction head; the outside of several signal receivers 2 is fixed with a wear-resistant plastic shell 3, and the wear-resistant plastic shell 3 is an IP67 waterproof and wear-resistant plastic shell, which is convenient for packaging and protection; a waterproof aviation plug 4 is fixedly installed at the connection between the wear-resistant plastic shell 3 and the network cable power supply composite flexible cable 8, which is waterproof and dustproof; an anti-twist device 5 is installed between the traction end of the intelligent traction head and the traction rope 18.

[0017] When in use, a lock is installed in front of the cable, and then the lock is used to connect it to the U-shaped connecting ring 10 of the system, so that the smart traction head can drag the cable through the traction rope 18. During the process of dragging the cable, the S-shaped tension sensor 13 will monitor the tension in real time to prevent the cable and the smart traction head from breaking due to excessive tension. At the same time, during the cable dragging operation, the nine-axis high-precision angle sensor 14, two cameras 15 and RTK wireless locator 16 inside the smart traction head will work in real time. The model of the nine-axis high-precision angle sensor 14 is HWT9073, which can continuously record the acceleration and angular velocity data of the traction head and transmit it to the main control unit. The RTK wireless locator 1 6 records the position information of the traction head in real time and transmits it to the main control unit. The two cameras 15 shoot the pipeline environment in front at a frame rate of 5FPS. The image data is transmitted to the main control unit for compression. All the recorded sensor data are packaged by the main control unit and transmitted to the underground communication network through the signal transmitter 17 in real time. The signal receiver 2 in the underground communication network transmits the received real-time data to the data temporary storage power supply device 1 through the network power composite flexible cable 8. The data temporary storage power supply device 1 temporarily stores the received real-time raw data in the local database and then forwards the data to the ground data processing center 9 via WIFI. The ground data processing center 9 processes and analyzes the data, specifically: (1) Tension safety analysis: After experiments, a secondary warning mechanism is finally established to monitor whether the limit is exceeded in real time. When the measured tension / safety threshold does not exceed 90% (the first-level warning trigger point), no alarm is given and full-speed traction is performed. When the measured tension / safety threshold exceeds 90% (the first-level warning trigger point) but does not exceed 95% (the second-level warning trigger point), the speed is reduced by 50%. When the measured tension / safety threshold exceeds 95% (the second-level warning trigger point), the machine stops working. (2) Visual inspection: Based on the improved YOLOv8 training pipeline foreign body detection model, it is used to monitor the internal environment of the pipeline in real time; (3) 3D path reconstruction: By integrating the data from the HWT9073 nine-axis high-precision angle sensor and the RTK wireless locator, a pipeline topology map is generated based on the strapdown inertial navigation algorithm for fault location and tracing.

[0018] Example 2 The following is an experimental test of a project using this system, specifically: (1) Tensile test We tested straight pipes, right-angle pipes, and S-shaped pipes respectively, and the experimental results were good. The system achieved millisecond-level alarms, as shown in Table 1 below: (2) Visual monitoring test This experiment tested more than 2,000 data samples. The trained pipeline foreign body monitoring models were able to maintain an accuracy rate of more than 97.5%, with excellent results, as shown in Table 2 below: (3) Communication stability test Taking into account communication efficiency and reliability, the system packages data every 100 milliseconds and sends 10 packets per second. This experiment tested 100 60-second working time periods. The experimental results showed that the data acceptance rate was 98.24% and the packet loss rate was less than 2%.

[0019] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An intelligent traction system for underground power cable pipelines, characterized by: The system includes several intelligent traction heads, an underground communication network, a ground data processing center and several underground power cable pipelines (7); The underground communication network includes a double-headed locking traction rope (6), the double-headed locking traction rope (6) is fixedly installed on the top of the inner wall of one of the underground power cable pipelines (7), a plurality of signal receivers (2) are installed on the double-headed locking traction rope (6), and the plurality of signal receivers (2) are connected to each other through a network cable power composite flexible cable (8), the signal receiver (2) located at the front end of the pipeline is connected to a data temporary storage power supply device (1) through the network cable power composite flexible cable (8), and the data temporary storage power supply device (1) is connected to a ground data processing center (9) by signal; A plurality of intelligent traction heads are provided inside an underground power cable conduit (7) adjacent to one of the underground power cable conduits (7), and two adjacent intelligent traction heads are connected via a traction rope (18); A lithium battery (12) is installed at the bottom end of one side of the intelligent traction head, a fixing column (19) is vertically installed in the middle of the intelligent traction head, one side of the fixing column (19) is connected to one end of an S-shaped tension sensor (13) through a first fixing screw (20), and the other end of the S-shaped tension sensor (13) is installed with a U-shaped connecting ring (10) through a second fixing screw (11), a nine-axis high-precision angle sensor (14) is fixedly installed in the middle of the other side of the intelligent traction head, an RTK wireless locator (16) is installed on one side of the nine-axis high-precision angle sensor (14), a signal transmitter (17) is fixedly installed on the top of the other side of the intelligent traction head, and a camera (15) is symmetrically installed on the side wall of the other side of the intelligent traction head.

2. The intelligent traction system for underground power cable conduits according to claim 1, characterized in that: The distance between the plurality of signal receivers (2) is 30m, and the plurality of signal receivers (2) are equipped with a LoRa receiving module.

3. The intelligent traction system for underground power cable conduits according to claim 2, characterized in that: A wear-resistant plastic shell (3) is fixedly provided on the outside of the plurality of signal receivers (2), and the wear-resistant plastic shell (3) is an IP67 waterproof and wear-resistant plastic shell.

4. The intelligent traction system for underground power cable conduits according to claim 3, characterized in that: A waterproof aviation plug (4) is fixedly installed at the connection between the wear-resistant plastic shell (3) and the network power composite flexible cable (8).

5. The intelligent traction system for underground power cable conduits according to claim 1, characterized in that: An anti-twist device (5) is installed between the traction end of the intelligent traction head and the traction rope (18).

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