Wiring construction method of current collection line

Abstract

The invention discloses a wiring construction method for a current collection circuit, relates to the technical field of electric power engineering construction, and aims to solve the problems of unstable construction quality, low efficiency and high safety risk in traditional wiring construction. Comprising the steps of drawing review, construction scheme making and ground wire parameter calculation. Personnel and equipment are prepared, a construction team is established and trained, and construction equipment is equipped and checked and debugged; preparing materials, purchasing and inspecting the materials; field preparation, field exploration, channel cleaning, stretching field selection and equipment arrangement are carried out; s2, conducting and grounding wire laying, selecting a laying mode according to line conditions, accurately controlling tension during tension laying, synchronously carrying out sag observation and adjustment, adopting a proper conducting wire connection technology, and detecting connection quality. The method has the advantages that the construction quality, efficiency and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power engineering construction, and more specifically to a wire-laying construction method for a collector line. Background Art

[0002] In the construction of power collection lines, the construction of wires is an extremely critical link. However, in the current construction of power collection lines, the technical means of the crossing construction link still have significant defects, that is, when crossing important facilities such as roads, railways, and power lines, the existing construction method of the crossing frame lacks precise design and construction specifications, making it difficult to accurately guarantee the strength and stability of the crossing frame. For example, under some complex terrain conditions, the construction of traditional crossing frames cannot fully consider the impact of the terrain on its structure. In strong winds or other severe weather, the crossing frame is prone to shaking, tilting, etc., which not only seriously threatens the lives of construction workers, but may also cause damage to the facilities being crossed, leading to serious consequences such as traffic paralysis and power failures.

[0003] In addition, the existing live crossing construction technology has a large loophole in the control of safety distance. During the operation, construction workers mainly rely on experience and simple measurement tools. It is difficult to accurately ensure the safe distance from the live body under complex electromagnetic environment and dynamic construction conditions, which greatly increases the risk of electric shock for construction workers. Once the safety distance is controlled incorrectly, an electric shock accident will occur instantly, causing irreparable damage to the construction workers and also having a great impact on the normal operation of the power system. In view of this, we propose a wire construction method for the collector line. Summary of the invention

[0004] The object of the present invention is to provide a wire construction method for a collector line, aiming to solve the problems of unstable construction quality, low efficiency and high safety risk existing in traditional wire construction.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a wire construction method for a collector line, the method comprising the following steps:

[0006] S1: Construction preparation, technical preparation, including drawing review, construction plan formulation, and calculation of ground wire parameters;

[0007] Prepare personnel and equipment, form and train construction teams, equip construction equipment and inspect and debug;

[0008] Material preparation, purchasing and inspecting materials; site preparation, investigating the site, clearing the passage, selecting the site for traction and arranging equipment;

[0009] S2: Ground conductor deployment: select the deployment method according to the line conditions, accurately control the tension when using tension wire deployment, observe and adjust the sag simultaneously, use appropriate wire connection technology and test the connection quality;

[0010] S3: Installation of tensioning wires and accessories. Select appropriate equipment when tensioning wires, operate in sequence and monitor sag and tension.

[0011] The installation of accessories includes the installation of insulator strings, hardware and anti-vibration hammers, etc., to ensure accurate installation positions and firm connections;

[0012] S4: Crossing and crossing construction: investigate and analyze the important facilities of the line crossing, formulate a crossing plan, and take safety protection measures to ensure construction safety;

[0013] S5: Ensure construction safety, establish a safety management system, set up safety protection facilities, establish a safety risk monitoring and early warning mechanism, and organize emergency drills.

[0014] Preferably, in the above step S1, the construction plan in the technical preparation needs to be formulated in combination with the length, span, conductor specifications, topography and meteorological conditions of the line, and the calculation of the ground wire parameters includes calculating the length, tension and sag of the ground wire.

[0015] Preferably, in the above step S2, when the tension wire is released, the tension of the ground wire is monitored in real time by a tension sensor, the tension is adjusted by a tension machine, and a communication device is provided between the traction machine and the tension machine to achieve collaborative operation, thereby ensuring a uniform release speed of the ground wire.

[0016] Preferably, in the above step S2, the sag observation selects a suitable observation gear, adopts one or more methods of the gear end angle method and the different length method for observation, uses a theodolite or a total station to measure the sag, and compares it with the designed sag value, and adjusts the sag by adjusting the tension of the tension machine or the traction speed of the traction machine.

[0017] Preferably, in the above step S2, the wire connection adopts hydraulic crimping or explosion compression connection, the wire connection part is cleaned and processed before connection, and the crimping pressure, length, shape and other parameters are controlled during the connection process. After the connection is completed, the quality of the connection part is detected by ultrasonic flaw detection or X-ray flaw detection method.

[0018] Preferably, in the above step S3, the wire tightening operation selects a capstan or a hydraulic wire tightening device, and is performed in the order of tightening the ground wire first and then the conductor wire, and a synchronous wire tightening method is used to ensure uniform tension of each phase conductor in the same tension section, while monitoring the pole tower and temporary tensioning conditions.

[0019] Preferably, in the above step S4, a crossing frame is set up when crossing a highway and a railway, and the height and width of the crossing frame are designed according to the height, width and safety distance of the object to be crossed. When crossing a power line, a power outage crossing, a live crossing or insulation protection measures are selected according to the voltage level and operating conditions of the power line, and corresponding safety measures and emergency plans are formulated.

[0020] Preferably, in the above step S5, the safety management system clarifies the safety responsibilities of managers and construction personnel at all levels, formulates safety operating procedures and safety inspection systems, and conducts regular safety education, training and assessment for construction personnel.

[0021] Preferably, in the above step S5, the safety protection facilities include setting up safety belts, safety nets and protective railings in the high-altitude working area, setting up warning signs and insulation protection facilities in the live working area, and regularly inspecting and maintaining the construction equipment and tools.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention ensures that the installation of the ground wire meets the design requirements through precise tension control and sag observation and adjustment, reduces line failures caused by sag deviation, improves the electrical performance and stability of the line, adopts advanced wire connection technology and strict quality inspection methods, ensures the quality of the wire connection part, enhances the mechanical strength and conductivity of the line, and extends the service life of the line.

[0024] 2. The present invention optimizes the construction process by reasonably selecting the deployment method and construction equipment, reduces the adjustment and waiting time during the construction process, and improves the construction efficiency. During the tensioning and laying process, the ground wire is quickly deployed through the coordinated operation of the tension machine and the traction machine; during the tightening and accessory installation process, synchronous operation and standardized operation are adopted to improve the construction speed and shorten the construction period.

[0025] 3. The present invention effectively reduces the safety risks in the construction process through a complete safety management system, safety protection facilities and safety risk monitoring and early warning mechanism. In the cross-span construction, a reasonable crossing plan and strict safety protection measures ensure the safety of the objects being crossed and the personal safety of the construction personnel. By strengthening safety education and training and emergency drills, the safety awareness and emergency handling capabilities of the construction personnel are improved, ensuring the smooth progress of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the method flow in the present invention. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Embodiment 1

[0029] like Figure 1 As shown: The construction team first conducted an in-depth review of the construction drawings, and formulated a detailed construction plan based on the mountainous terrain and local meteorological data of the line. The construction personnel were organized for technical and safety training. The training content included construction technology, quality standards, and safe operating procedures. An assessment was conducted after the training to ensure that the construction personnel had the corresponding skills and knowledge. According to construction needs, tension machines, traction machines, theodolites, and total stations were equipped, and the equipment was comprehensively inspected and debugged. Ground wires, insulators, and hardware materials that met the design requirements were purchased, and each batch of materials was strictly inspected and tested to ensure that the quality of the materials was qualified. At the construction site, the line channel was cleared, trees and obstacles that affected the construction were removed, a suitable tensioning site was selected, the site was leveled and reinforced, and reliable ground anchors and anchoring devices were installed to make full preparations for subsequent construction.

[0030] Before laying out the wire, the tension and sag of the ground wire are determined by calculation according to the line parameters and terrain conditions, and the corresponding parameters are set on the tension machine and traction machine. During the laying process, the tension of the ground wire is monitored in real time by a tension sensor. When the tension fluctuates, the output force of the tension machine is adjusted in time to ensure stable tension. At the same time, the sag is observed using a theodolite, and the sag is measured every time a certain distance is laid out. When sag deviation is found, the sag is adjusted by adjusting the speed of the traction machine. When connecting the conductors, hydraulic crimping is used and the operation is performed strictly in accordance with the operating procedures. After crimping, the connection parts are ultrasonically tested to ensure the quality of the connection.

[0031] After the ground wire is laid out, the wire tightening operation is carried out. The construction workers use hydraulic tensioners to tighten the wires in the order of tightening the ground wire first and then the conductor wire. During the tightening process, the sag and tension are monitored synchronously. By adjusting the pulling force of the tensioner, the ground wire can reach the tension and sag required by the design. After the tightening is completed, the accessories are installed. The construction workers first assemble the insulator string on the ground, and then use a crane to lift it to the pole tower and connect it to the pole tower and the ground wire. When installing the hardware, strictly follow the design requirements to ensure that the hardware is installed in the accurate position. When installing the anti-vibration hammer, determine the installation position and quantity according to the specifications of the ground wire, use special tools to install it, and ensure that the anti-vibration hammer is firmly installed.

[0032] For crossing the highway, the construction team set up a sturdy crossing frame. The height and width of the crossing frame met the safety requirements of the expressway. Obvious warning signs and protective facilities were set up on the crossing frame. When crossing the power lines, the construction team communicated and coordinated with the power department and chose to carry out the crossing construction during the power outage. During the construction process, the construction personnel strictly abided by the safety regulations for live working, maintained a sufficient safe distance from the live objects, and used insulating tools to operate to ensure construction safety.

[0033] Throughout the construction process, the construction team strictly implemented the safety management system. Managers and construction personnel at all levels clearly defined their respective safety responsibilities. Complete safety protection facilities were set up at the construction site, such as safety belts, safety nets and guardrails in high-altitude working areas, warning signs and insulation protection facilities in live working areas, and a safety risk monitoring and early warning mechanism was established. Real-time monitoring of parameters such as the inclination of towers and the tension of ground wires was carried out. When abnormal situations occurred, early warning signals were issued in a timely manner and measures were taken to deal with them. Emergency drills were organized regularly to improve the emergency response capabilities of construction personnel and ensure the safety of the construction process.

[0034] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A method for constructing a collector line, characterized in that: The method comprises the following steps: S1: Construction preparation, technical preparation, including drawing review, construction plan formulation, and calculation of ground wire parameters; Prepare personnel and equipment, form and train construction teams, equip construction equipment and inspect and debug; Material preparation, purchasing and inspecting materials; site preparation, investigating the site, clearing the passage, selecting the stretching site and arranging the equipment; S2: Ground conductor deployment: select the deployment method according to the line conditions, accurately control the tension when using tension wire deployment, observe and adjust the sag simultaneously, use appropriate wire connection technology and test the connection quality; S3: Installation of tensioning wires and accessories. Select appropriate equipment when tensioning wires, operate in sequence and monitor sag and tension. The installation of accessories includes the installation of insulator strings, hardware and anti-vibration hammers, etc., to ensure accurate installation positions and firm connections; S4: Crossing and crossing construction: investigate and analyze the important facilities of the line crossing, formulate a crossing plan, and take safety protection measures to ensure construction safety; S5: Ensure construction safety, establish a safety management system, set up safety protection facilities, establish a safety risk monitoring and early warning mechanism, and organize emergency drills.

2. A method for constructing a collector line according to claim 1, characterized in that: In the above step S1, the construction plan in the technical preparation needs to be formulated in combination with the line length, span, conductor specifications, topography and meteorological conditions, and the calculation of the ground wire parameters includes calculating the length, tension and sag of the ground wire.

3. A method for constructing a collector line according to claim 1, characterized in that: In the above step S2, when the tension wire is released, the tension of the ground wire is monitored in real time by a tension sensor, the tension is adjusted by a tension machine, and a communication device is set between the traction machine and the tension machine to achieve collaborative operation to ensure a uniform release speed of the ground wire.

4. A method for constructing a collector line according to claim 1, characterized in that: In the above step S2, the sag observation selects a suitable observation gear, adopts one or more methods of the gear end angle method and the different length method for observation, uses a theodolite or a total station to measure the sag, and compares it with the designed sag value, and adjusts the sag by adjusting the tension of the tension machine or the traction speed of the traction machine.

5. A method for constructing a collector line according to claim 1, characterized in that: In the above step S2, the wire connection is carried out by hydraulic crimping or explosion compression connection. The wire connection part is cleaned and processed before connection. During the connection process, the crimping pressure, length, shape and other parameters are controlled. After the connection is completed, the quality of the connection part is detected by ultrasonic or X-ray flaw detection.

6. A method for constructing a collector line according to claim 1, characterized in that: In the above step S3, the wire tightening operation selects a capstan or a hydraulic wire tightener device, and is performed in the order of tightening the ground wire first and then the conductor wire. A synchronous wire tightening method is used to ensure uniform tension of each phase conductor in the same tension section, while monitoring the tower and temporary wire conditions.

7. A method for constructing a collector line according to claim 1, characterized in that: In the above step S4, a crossing frame is set up when crossing over roads and railways. The height and width of the crossing frame are designed according to the height, width and safety distance of the object to be crossed. When crossing over power lines, power outage crossing, live crossing or insulation protection measures are selected according to the voltage level and operation status of the power lines, and corresponding safety measures and emergency plans are formulated.

8. A method for constructing a collector line according to claim 1, characterized in that: In the above step S5, the safety management system clarifies the safety responsibilities of managers and construction personnel at all levels, formulates safety operating procedures and safety inspection systems, and conducts regular safety education, training and assessment for construction personnel.

9. A method for constructing a collector line according to claim 1, characterized in that: In the above step S5, the safety protection facilities include setting up safety belts, safety nets and protective railings in the high-altitude working area, setting up warning signs and insulation protection facilities in the live working area, and regularly inspecting and maintaining the construction equipment and tools.

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