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Gas-started boiler

A technology for starting boilers and gas, applied in steam boilers, combustion methods, combustion equipment, etc., can solve the problems of reducing the service life of the boiler body and water pipes, dew condensation on economizer pipes, and temperature reduction of economizers, etc., to achieve Reduce restart time, avoid pipe corrosion, reduce the effect of natural gas

Pending Publication Date: 2018-03-13
浙江大唐国际绍兴江滨热电有限责任公司
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  • Abstract
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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

Method used

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] see Figure 1 to Figure 3, a gas-fired boiler in a preferred embodiment of the present invention includes a furnace body 1, a flue is provided on the right side of the furnace body, and the flue includes a horizontal flue 2 communicating with the inner cavity of the furnace body and a horizontal flue communicating with the horizontal flue. A vertical flue 3, an economizer 4 is arranged inside the vertical flue, a flue outlet is arranged at the bottom of the vertical flue, and a flue wind baffle door 5 that can completely cover the flue outlet is arranged below the flue outlet , the smoke and wind baffle door is connected with the output end of the electric actuator...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/08F22D1/02F23J15/06F23L17/02
CPCF22B31/08F22D1/02F23J15/06F23L17/02
Inventor 徐耀利边登鹏张天宇刘建生程朝辉晏海涛姚东李华良陈瑜康延峰
Owner 浙江大唐国际绍兴江滨热电有限责任公司
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