Caidian Power Transmission and Transformation Project Construction, High Temperature Resistant MPP Pipe Adaptation Line Construction

The high temperature resistant MPP pipe is a modified polypropylene protective pipe specially developed for the laying of power lines. This time, the parameters are adapted according to the construction needs of the Caidian power transmission and transformation project, the local geological environment and the line construction standards. It is mainly used for the laying of protective bushings for buried high-voltage power cables, which can meet the line laying requirements of different sections of the Caidian regional power transmission and transformation project. It is a special supporting pipe for the construction of power transmission and transformation lines.

The core advantages of high-temperature resistant MPP pipes for the Caidian power transmission and transformation project this time are mainly four points: First, the high-temperature resistance performance is adapted to the operating conditions of the line. The long-term use temperature of the pipe can be stably maintained within 95 ° C, and the short-term can withstand the overload heating temperature of the line at 130 ° C. It will not cause pipe deformation and leakage problems due to the long-term operation of the cable. It is suitable for the long-term operation heating requirements of the high-voltage lines of the Caidian power transmission and transformation project to avoid the line protection failure caused by the aging deformation of the pipe. Second, the construction adaptability meets the regional operation requirements, the pipe has light weight, and at the same time has good impact resistance and toughness. It can be adapted to a variety of construction techniques such as direct buried laying and trenchless pipe jacking involved in the Caidian power transmission and transformation project. Even in the low temperature construction environment in winter, it is not easy to appear brittle cracking problems, which can effectively reduce the difficulty of on-site operations, shorten the construction period, and reduce the material loss of on-site construction. Third, the electrical insulation performance matches the power grid safety standards. The insulation resistance value of the pipe body meets the requirements of the power industry's protective casing standards. The breakdown voltage is much higher than the rated voltage value of the transmission and transformation line. There will be no conduction and leakage problems. It can effectively isolate the impact of soil acid and alkali corrosion and external force accidental damage on the internal power cable, and greatly improve the safety and stability of line Fourth, the long-term planning of the service life matching project, the pipe has good acid and alkali corrosion resistance and external wear resistance, and the service life can reach more than 50 years under normal buried laying conditions. Matching the long-term operation and maintenance planning of the Caidian power transmission and transformation project can reduce the operation and maintenance cost of pipe replacement in the later stage and reduce the probability of line outage and maintenance.

The pipe is mainly suitable for the buried laying of power transmission and transformation engineering lines of various voltage levels in the Caidian area, covering cable protection of urban non-excavated road sections, line protection of suburban direct buried road sections, and can also be adapted to power related projects such as power grid transformation and public charging facilities line laying in the same area; the suitable population includes relevant subjects such as power transmission and transformation engineering construction units, power grid construction operation and maintenance units, and power engineering pipe purchasers, which can be directly included in the pipe selection reference range of the Caidian power transmission and transformation project.

The performance of this high-temperature resistant MPP pipe meets the relevant national and industry standards for power cable protection bushings in the power industry. The corresponding performance test report can be provided before the batch enters the site to meet the construction access requirements of the Caidian power transmission and transformation project. All production and inspection links meet the relevant national specifications, and can cooperate with the project to complete various construction acceptance processes. The full text is about 980 words.