Electric Tracing and Thermal Insulation for the Pipes of the "Mountain Peak That Cannot Be Fly" in Queer Mountain
Date: 2017-08-26 10:16 Source: Central Swiss International Electric Research: Network Information Department Views: Times
Queer Mountain is located on National Highway 317 on the northern line of the Sichuan-Tibet Highway and in Dege County, Ganzi Prefecture, Sichuan Province. The Tibetan language is "Rongbiao Oza", which means "mountain peaks that cannot be reached by mountain eagles." The main peak of Cheershan Mountain is 6168 meters above sea level, and it is covered by snow for up to 8 months every year.
The person in charge of the design of the Queershan Tunnel introduced that the entrance of the Queershan Tunnel is 4378 meters above sea level and the exit of the exit hole is 4232 meters above sea level. At present, it is an ultra-long highway tunnel in the world. .
After the Cheershan Tunnel is opened to traffic, passing vehicles can pass through Cheershan in only 10 minutes. It will not have to detour the dangerous mountain road for more than two hours, saving mileage by nearly 20 kilometers compared with the original road. (The above content source network)
The Queershan Tunnel is located in a special geographical environment with relatively cold temperatures and long snow and ice coverage periods. The fire pipelines in the tunnels are extremely prone to freezing and blocking due to low temperatures, which affects their use. Therefore, heat tracing and insulation methods are needed to maintain the inside of the pipes. temperature.
According to the location and environment of the tunnel, the construction unit decided to choose an electric heat tracing system for the heat tracing of the pipes in the tunnel after comprehensive consideration. Through understanding and field visits, the construction unit valued our company's strength and product quality and decided to cooperate with our company. .
After receiving the pipe insulation project of Queershan Tunnel, our company immediately sent technicians to the site to understand the environment and the situation of the pipeline. Because the pipeline is located in high altitude and high and cold regions, it requires higher heat tracing and heat insulation. The tropical zone cannot meet its requirements, so our company's technicians chose to use a series constant power electric heating cable.
The electric heat tracing system uses a series constant power electric heating cable, which requires 10 watts of power and a field voltage of 380V; a total of 8000 meters of main tunnels with a diameter of DN200. The two ends of the tunnel must be 1500 meters of electricity inward. Heat Tracing. The first 500 meters of fire piping heat tracing ratio is 1: 3.6, the second 500 meters of fire piping heat tracing ratio is 2.7, and the third 500 meters of fire piping heat tracing ratio is 1.8.
The series constant-power electric heating cable produced by Huanrui is suitable for heat tracing of long-distance pipelines. It passes current on the core wire with a certain resistance, so that the heat generated everywhere is equal, and the heat tracing temperature is balanced.