Determination of the diameter of the main steam pipelines of the supply pipelines of the Heat electric generation with a capacity of 325 MW

Abstract

Due to the high pace of industrialization of the Republic of Kazakhstan, the electric power industry is becoming one of the priorities in our country. To increase the volume of electricity, the power industry is being reequipped with an increase in the technical and economic level of electricity production. In this light, the reequipment of the Electric central heat looks the most promising. Leads to the effective production of not only electricity, but also thermal energy. The main indicator of the economical operation of a thermal power plant is the specific consumption of thermal energy for the generation and release of a unit of electrical energy. The article provides calculations of the diameter of the main steam pipelines of the supply pipelines of the Electric central heat with the capacity of 325 MW. Data on the choice of steam generators and turbines (drum with natural circulation and without reheat) are given. The authors proposed a block diagram with the same type of steam generators using a common station steam main. In order to use the redundant production selection at the Electric central heat, a sectional layout of the main steam pipelines is selected in connection with the fact that it is a more universal and reliable scheme. The authors make an initial calculation of the internal diameter associated with the water speed, which is compared with the recommended values. The diameter of the line from the deaerator to the collector of the pump of the electric pump is determined.