Gas-started boiler

Abstract

The invention relates to a gas-started boiler. The gas-started boiler comprises a boiler body, the right of the boiler body is provided with a horizontal flue and a vertical flue, wherein the inside of the vertical flue is provided with an economizer; a smoke damper door is arranged under the flue outlet of the vertical flue; a support plate is arranged under the boiler body; the bottom wall of the boiler body is provided with a round through hole, a main water pipe is arranged above the round through hole, and the bottom end of the main water pipe is provided with a baffle; the lower surfaceof the baffle is provided with a driving device, and the bottom of the driving device is provided with a rotary connector; a movable connector is connected with the output shaft of the driving deviceand communicated with an output pipe through an adaptor pipe; the bottom of the adapter pipe is provided with a mounting plate, and a fixed connector is mounted on the mounting plate; the inside of the boiler body is provided with a plurality of external water pipes which are distributed circumferentially; the inside of the external water pipes are provided with a plurality of internal water pipes which are distributed circumferentially. According to the gas-started boiler, the economizer is less prone to moisture condensation or corrosion; the boiler body and the water pipes are not easy todamage and long in service life.

Description

technical field [0001] The invention relates to a boiler, in particular to a gas-fired boiler. Background technique [0002] The gas-steam combined cycle generator set with one drive and one single shaft arrangement needs to be equipped with a gas-fired start-up boiler. When the unit is started, the gas-fired start-up boiler provides auxiliary steam to the shaft seal system of the steam turbine and the low-pressure cylinder of the steam turbine. After the unit starts, the gas-fired boiler stops running. After the gas-fired boiler stops running, the temperature of the economizer of the gas-fired boiler drops rapidly, resulting in condensation and corrosion of the economizer tubes. In addition, in the existing gas-fired boiler, the fire emitted by the burner radiates to the furnace body of the boiler and fixed parts of the water pipes in the furnace body for a long time, thereby reducing the service life of the furnace body and water pipes of the boiler. [0003] In view of ...

AI Technical Summary

Problems solved by technology

After the gas-fired boiler stops running, the temperature of the economizer of the gas-fired boiler drops rapidly, resulting in condensation and corrosion of the economizer tubes

In addition, in the existing gas-fired boiler, the fire sprayed by the burner radiates to the furnace body of the boiler and the fixed part of the water pipe in the furnace body for a long time, thereby reducing the service life of the furnace body and water pipe of the boiler

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