Gas thermal power plant one-dragging-one set condensate system and start and stop method thereof

Abstract

The invention provides a gas thermal power plant one-dragging-one set condensate system and a start and stop method thereof. The gas thermal power plant one-dragging-one set condensate system comprises a condensate booster pump recirculating main path, a condensate booster pump recirculating bypass, a first condensate booster pump branch, a second condensate booster pump branch, a first condensate pump branch, a second condensate pump branch, a condensate recirculating main path, a condensate recirculating bypass, a condensate booster pump recirculating pipeline, a condensate recirculating pipeline, a first condensate booster pump, a second condensate booster pump, a first condensate pump, a second condensate pump, a condenser, a sealing heater and a deironing filter. According to the gas thermal power plant two-dragging-one set condensate system, automatic start of the condensate system can be achieved under the full-stop state, automatic stop of the condensate system can be achieved under the running state, automatic start of the condensate system can be achieved under the state of partial start, and the original running state cannot be disturbed.

Description

technical field [0001] The invention relates to the condensate water technology of a gas-fired thermal power plant, in particular to a condensate system of a gas-fired thermal power plant with one drive and one unit and its start-up and stop method. Background technique [0002] The main function of the condensate water system in a gas-fired thermal power plant is to boost the pressure of the condensate water by the condensate water pump, flow through the shaft seal heater, iron removal filter device and transport it to the low-pressure steam drum on the side of the furnace; Water supply for miscellaneous users such as medium pressure bypass desuperheating water, low pressure bypass desuperheating water, three-stage desuperheating water, cold to shaft seal desuperheating water, low pressure shaft seal desuperheating water, drain expansion vessel desuperheating water, etc. However, the existing gas-fired thermal power plant condensate system cannot automatically start the con...

AI Technical Summary

Problems solved by technology

However, the existing gas-fired thermal power plant condensate system cannot automatically start the condensate system in the full stop state; it cannot realize the automatic stop of the condensate system in the running state and cannot realize the condensate system in the partially started state. Start automatically without interfering with the original running state

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