Water feeding system of gas power generation boiler

Abstract

The invention discloses a water feeding system of a gas power generation boiler. The water feeding system of the gas power generation boiler comprises a water feeding header pipe. The water feeding header pipe is at least connected with two boiler feed pumps in parallel. An outlet of the water feeding header pipe communicates with a steam pocket through a steam pocket water feeding pipe and meanwhile communicates with a low-temperature overheater through a low-temperature overheater water feeding pipe. The steam pocket water feeding pipe is sequentially provided with a first electric control valve, a first main control valve and a second electric control valve. The steam pocket water feeding pipe is connected with a steam pocket water feeding bypass pipe in parallel, and the steam pocket water feeding bypass pipe is provided with a first bypass valve. The low-temperature overheater water feeding pipe is sequentially provided with a third electric control valve, a second main control valve and a fourth electric control valve in the flowing direction of a medium. The low-temperature overheater water feeding pipe is connected with a low-temperature overheater water feeding bypass pipein parallel, and the low-temperature overheater water feeding bypass pipe is provided with a second bypass valve. The water feeding system of the gas power generation boil has the advantages that therunning stability and the using safety are high, the control valves and the boiler feed pumps can be maintained online, safety running of a production system of the gas power generation boiler is guaranteed, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of gas-fired power boilers, in particular to a water supply system for gas-fired power boilers. Background technique [0002] The gas-fired boiler water supply system is an important part of the gas-fired boiler production, mainly used to supply water to the steam drum of the gas-fired boiler, so as to control the steam generation of the gas-fired boiler. The structure of the gas-fired power boiler includes: a furnace body and a low-temperature superheater, an upper header is arranged above the furnace body, a steam drum is arranged above the upper header, and a lower header is arranged below the furnace body. The water outlet is connected to the inlet of the lower header through the descending pipe arranged outside the furnace body, the outlet of the lower header is connected to the inlet of the upper header through the rising pipe arranged inside the furnace body, and the outlet of the upper header is conn...

AI Technical Summary

Problems solved by technology

The disadvantages of the above-mentioned gas-fired boiler water supply system are: low operational stability and low safety in use. When the regulating valve or boiler feed water pump fails, the entire gas-fired power boiler production system needs to be shut down to perform the regulating valve or boiler feed water pump. Maintenance can not guarantee the safety and smooth operation of the gas-fired boiler production system, which affects production efficiency

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