At present, the core of PCCP is cured by hot steam, which is generated in the boiler by burning coal or combustible gas. In order to reduce environmental pollution, Xinjiang Guo Tong Pipeline has upgraded the maintenance equipment of PCCP core, designed and developed automatic and electric steam curing equipment and curing method.

In the maintenance equipment of this project, there are two steel cylinders with different diameters, and a heating pipe is installed between the two layers of steel cylinders. There are some sauna stone besides the heating pipe, and automatic sprinklers are installed above the sauna stone.

In this project, the automatic and electric steam maintenance equipment replaces the traditional steam maintenance equipment by coal-fired boiler, meets the requirements of low-carbon emission and environmental protection, and promotes the development of PCCP industry.

Automatic and electric steam maintenance equipment and curing method for PCCP

The main innovations of the project are as follows.

lElectric heating is environmentally friendly

lThe automatic control system is adopted, which is simple to operate, and the temperature and humidity control in the maintenance process is more accurate and reliable.

lThe temperature in the maintenance process is automatically recorded, which is convenient for export and printing.

lThe equipment investment is small, only about 12.5% of the maintenance investment of the traditional steam boiler.

Automatic maintenance control system

This project has been actually applied to the maintenance of PCCP cores in a number of water conservancy projects. The maintenance quality met the requirements of national standards and achieved good economic benefits, which has been unanimously recognized by the supervisor and the PCCP manufactures.