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Heating furnace emergency shutdown protection device and interlocking control method

A technology for furnace shutdown protection and heating furnace, which is applied in the direction of furnace control devices, furnace safety devices, lighting and heating equipment, etc., can solve the problems of lax valve closing, hidden dangers of heating furnace safety, tempering, etc., to ensure safe operation, Improve efficiency and ensure safety effect

Pending Publication Date: 2021-05-07
新余钢铁股份有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the process of use, it is necessary to stop the furnace in case of power failure, water cut-off, fan stop and instrument gas source stop. At this time, the interlock protection program is started to close the quick-cut valve in the gas main pipe, but It takes time for each manual valve to close. Even if each burner is equipped with a quick-cut valve in front of the nozzle, it cannot be guaranteed that the valve of the quick-cut valve can be completely closed, especially for a heating furnace that has been used for a certain number of years. Strict phenomenon, in this case, when external factors cause the interlock protection to cut off the gas emergency shutdown, it is easy to flash back because the flame burning speed is greater than the gas flow rate, which brings certain safety hazards to the heating furnace

Method used

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  • Heating furnace emergency shutdown protection device and interlocking control method

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, ...

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Abstract

The invention relates to a heating furnace emergency shutdown protection device and an interlocking control method, and belongs to the technical field of heating furnace emergency shutdown protection. The protection device comprises a gas main pipe, a gas branch pipe and a nitrogen purging pipe, wherein a gas stop valve is arranged in the gas main pipe, the nitrogen purging pipe is detachably connected to the portion, behind the gas stop valve, of the gas main pipe, and an adjusting valve I is arranged in the nitrogen purging pipe. The multiple gas branch pipes are arranged, each gas branch pipe is connected with multiple burners, a stop valve II is installed in front of each burner, each gas branch pipe is connected with a bleeder I, and a stop valve III is installed in the bleeder I. The automatic remote interlocking control system has the beneficial effects that automatic remote interlocking control can be carried out when the furnace is shut down emergently, nitrogen replacement is carried out on the pipeline behind the main pipe valve, tempering accidents are avoided, meanwhile, the safety of maintenance of in-furnace maintenance personnel is guaranteed, and safe operation of a heating furnace at different furnace shutdown time is guaranteed.

Description

technical field [0001] The invention relates to the technical field of heating furnace emergency shutdown protection, in particular to a heating furnace emergency shutdown protection device and an interlocking control method. Background technique [0002] The gas fuel used in the heating furnace is coal gas. In the process of use, it is necessary to stop the furnace in case of power failure, water cut-off, fan stop and instrument gas source stop. At this time, the interlock protection program is started to close the quick-cut valve in the gas main pipe, but It takes time for each manual valve to close. Even if each burner is equipped with a quick-cut valve in front of the nozzle, it cannot be guaranteed that the valve of the quick-cut valve can be completely closed, especially for a heating furnace that has been used for a certain number of years. Strict phenomenon, in this case, when external factors cause interlock protection to cut off the gas emergency shutdown, it is e...

Claims

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Application Information

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IPC IPC(8): F27D21/00F27D19/00
CPCF27D19/00F27D21/00F27D2019/0009F27D2021/0057
Inventor 刘永龙吴翔李学明唐法丁熊雄肖颖周焱民谢爱平赵房亮王琨铭席细勇阳隽觎李玉清阮磊严伟民朱良冰
Owner 新余钢铁股份有限公司
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