Gas station pe oil pipeline-gas station double-layer composite pipeline is produced by multi-layer thermoplastic extrusion process. The pipe is suitable for pressure oil pipelines, self-priming oil pipelines, oil unloading pipelines, venting and oil and gas recovery pipelines and chemical transportation pipelines for a variety of oil products. The semi-flexible structure of the tube ensures the strength and durability of the tube, while also making the tube easy to install.
Reason 1: The need to implement online leakage monitoring technology
According to the requirements of relevant national laws and regulations, the double-layer composite pipeline should adopt an online monitoring system. There is an annular gap between the inner main pipe and the outer casing of the double-layer composite pipeline. According to the specific situation, the interlayer space can be monitored in real time by using positive pressure method, vacuum method or liquid sensor method to realize the needs of online monitoring. .
Reason 2: Solve the corrosion problem of steel pipe
The application of composite pipes in gas stations was to solve the corrosion problem of steel pipes. According to statistics, about 70% of gas station leakage accidents are caused by pipeline corrosion. In order to solve this problem, the installation and use of gas stations in areas with more severe corrosion, due to the excellent corrosion resistance of polyethylene composite pipes, has been widely promoted and applied in gas station oil pipelines.
Reason 3: Environmental protection laws and regulations and the need for environmental protection
In the “Gas Station Seepage and Leakage Pollution Control Standards”, it is clearly required that gas stations should adopt technical and management measures to prevent and control oil leakage; newly-built gas stations should use double-layer composite pipelines, which require high groundwater and soil environmental quality and geological changes Larger areas or areas with special requirements should adopt double-layer composite pipes made of flexible non-metallic composite materials; double-layer composite pipes should be equipped with anti-seepage and leakage detection devices. Gas stations use double-layer composite pipelines. If the oil pipeline leaks, the leaked oil will be stored in the interlayer space of the double-layer pipeline, and will not directly leak into the soil to avoid direct pollution to the environment.
Reason 4: Advantages of polyethylene double-layer composite pipe
1. Excellent corrosion resistance, no need for on-site anti-corrosion operations.
2. Designed to have a long service life. Flexible pipeline, light weight, direct buried laying, no need for pipe trench, easy construction.
3. The length of the pipe is long, and the coil is supplied, which can realize the buried part without joints and eliminate potential safety hazards.
4. Mature electrofusion welding technology, reliable welding quality and short construction period.