Pipeline gas construction organization in a city design scheme
The pipeline gas project in a city is an urban pipeline gas project approved by our province, relevant departments and the people's government. The annual gas supply capacity is 14 million cubic meters, covering the urban planning area of the city. The medium in the pipeline is natural gas. The municipal pipeline gas project consists of two parts, the gasification station part and the urban pipe network part, and the urban pipe network part includes the household project. The construction of the city's pipeline gas project is the first natural gas project in our province, which will have a significant impact and far-reaching significance on the development of natural gas in our province. This project is a medium pressure gas pipeline project. It starts from the natural gas valve station on the west side of Yingbin Avenue, runs eastward along the south side of Yingbin Avenue, passes through Yongfeng Road, Youzhuang Road and Huancheng South Road from Huancheng West Road, and then runs along Hongzhou along Yingbin Avenue to Ningbo Road; The pipeline runs from Qingping South Road to Hongzhou Road along Ningbo; Along the west ring of the city, the route is from Yongfeng Road to the ring of the city, then from Huancheng Road to Yingpan West Road along Mall Street, from Mall Street to Shaoshan North Road along Yingpan West Road, from Shaoshan North Road to Wenhua North Road along Yingpan East Road, and from Yingpan East Road to Beijing East Road along Wenhua North Road, as well as the residential and commercial users covered. The design pressure of the pipeline is medium pressure Class A 0.3MPa (gauge pressure). The total length of the trunk line is 15.13km, and SDR11 polyethylene pipeline is selected, of which the length of the pipeline with a diameter of de 250 × 22.7 is 0.95km; The pipeline length of de 200 × 18.2 is 10.31 km, and the pipeline length of de 200 × 18.2 is 0.95 km. The standard is GB/15558.1-1995, and the polyethylene pipe fittings of GB/15558.2-1995 are selected as the pipe fittings; Q235B steel pipe with a length of 2941m is selected for the crossing and the first branch line. The work quantity of the household is to be determined because there is no design drawing.