A Fully Adaptable Single Rotor Low Vacuum Circulating Water Heating System

Abstract

The invention relates to a fully adaptable single-rotor low-vacuum circulating water heating system. The present invention is characterized in that it includes 1# heat network return jelly pipe, left heat network water inlet branch pipe, left heat network water outlet branch pipe, right heat network water inlet branch pipe, right heat network water outlet branch pipe, left Side heating network water inlet valve, left heating network water outlet valve, right heating network water inlet valve and right heating network water outlet valve, one end of left heating network water inlet branch pipe is connected to 1# heating network return On the jellyfish pipe, the other end is connected to the left circulating water inlet branch pipe, and the left heating network water inlet valve is installed on the left heating network water inlet branch pipe; one end of the left heating network water outlet branch pipe is connected to the left side Circulating water outlet branch pipe, the other end is connected to 2# heating network return jelly pipe; one end of the right heating network water inlet branch pipe is connected to 1# heating network return jelly pipe, and the other end is connected to the right circulating water inlet on the branch pipe. The operation mode of the invention is flexible, and can meet the electric heating load to the greatest extent at the same time, without stopping the machine to replace the rotor.

Description

technical field [0001] The invention relates to a fully adaptable single-rotor low-vacuum circulating water heating system, in particular to a heat network heating system of a wet-cooling unit thermal power plant, and is especially suitable for a centralized heating system with a relatively low return water temperature of the heat network and a large scale The thermal power plant belongs to the field of heat supply systems of thermal power plants. Background technique [0002] In recent years, more and more thermal power plants have implemented steam turbine waste heat recovery and heating transformation, of which low vacuum heating technology accounts for a considerable proportion, which has played a role in solving the problem of insufficient heating capacity of thermal power plants and realizing energy saving and emission reduction. positive effect. However, the current low-vacuum heating design is to recover all the heat of the exhausted steam of the steam turbine. Due ...

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Problems solved by technology

The low-pressure cylinder back pressure rotor interchangeable circulating water heating energy-saving system also needs to be shut down twice a year to replace the rotor, and it operates with thermal power during the heating period, and the operation mode is not flexible

[0005] To sum up, at present, there is no reasonable structural design, flexible system settings that can be switched at any time, which can not only meet the load regulation instructions of the grid, but also meet the heat load demand, and can be operated between pure condensation and heating conditions without shutting down. Low-vacuum circulating water heating system with seamless switching between

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