CN103423767A - Method and device for rapidly carrying out fire extinguishment on gas boiler - Google Patents
Method and device for rapidly carrying out fire extinguishment on gas boiler Download PDFInfo
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- CN103423767A CN103423767A CN201310353548XA CN201310353548A CN103423767A CN 103423767 A CN103423767 A CN 103423767A CN 201310353548X A CN201310353548X A CN 201310353548XA CN 201310353548 A CN201310353548 A CN 201310353548A CN 103423767 A CN103423767 A CN 103423767A
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Abstract
The invention discloses a method and a device for rapidly carrying out fire extinguishment on a gas boiler. Pneumatic quick-closing valves are arranged on east and west crude gas branch pipes and four corner branch pipes; when an MFT (Master Fuel Trip) actuates, the pneumatic quick-closing valves respond to the action in 1S to be rapidly closed to cut off incoming gas; meanwhile, nitrogen is filled to carry out blocking in front of the last valve of each gas corner burner branch pipe; blockage is carried out by nitrogen for gas leakage caused by the case that the valves are jammed or are not tightly closed due to scale depositing in pipelines. According to the invention, by changing electrical quick-closing valves into the pneumatic quick-closing valves and adding nitrogen to extinguish a fire, the condition that a pipe network cannot be controlled due to loss of pressure can be effectively prevented.
Description
Technical field
The invention belongs to the boiler technology field, relate to a kind of extinguishing method, especially a kind of method of gas boiler quick extinguishing and device.
Background technology
Boiler is a kind of energy conversion, the forms such as heat energy of chemical energy in fuel, electric energy, high-temperature flue gas are arranged to the energy of boiler input, and, through the boiler conversion, outwards output has steam, high-temperature water or the organic heat carrier of certain heat energy.The original meaning of pot refers to the water container heated on fire, and stove refers to the place of combustion fuel, and boiler comprises pot and stove two large divisions.The hot water produced in boiler or steam can be directly for industrial production and people's lives provide required heat energy, also can be converted to mechanical energy by Steam Power Equipment, or by generator, mechanical energy is converted to electric energy again.Provide the boiler of hot water to be called hot-water boiler, be mainly used in life, a small amount of application is also arranged in industrial production.The boiler that produces steam is called steam boiler, often referred to as boiler, multiplex in thermal power station, boats and ships, locomotive and industrial and mining enterprises.
In prior art, during the gas boiler fire extinguishing, can cause the valve bite or fit badly because of pipeline incrustation.Cause boiler to burn away or enter a large amount of coal gas, causing unstability and the security of boiler.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of method and device of gas boiler quick extinguishing is provided, it is pneumaticly to cut soon valve by changing the electronic valve of cutting soon, and adds nitrogen extinguishing, can effectively prevent the pipe network decompression and uncontrollable.
The objective of the invention is to be achieved through the following technical solutions:
At first the present invention proposes a kind of method of gas boiler quick extinguishing, on coal gas east, west arm and four jiaos of arms, pneumatic fast valve is installed, and when MFT moves, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas; Simultaneously, before last one valve of each angle burner arm of coal gas, pass into nitrogen and carry out shutoff; Cause that to causing the valve bite because of pipeline incrustation or fitting badly the coal gas that leaks is by the nitrogen shutoff.
The present invention also proposes a kind of gas boiler fast fire-extinguishing apparatus of realizing said method, comprise each gas piping that passes into burner hearth, pneumatic fast valve is installed respectively on gas piping, each pneumatic fast valve is connected to air accumulator by tracheae, before last one valve of each angle burner arm of coal gas, perforate connects nitrogen pipeline, and described nitrogen pipeline is connected to nitrogen cylinder.
Above-mentioned pneumatic fast valve operating voltage is 24VDC.
Above-mentioned pneumatic fast valve work bleed pressure remains between 0.45-0.6MPa.
Above-mentioned pneumatic fast valve is connected with a working power and a stand-by power supply.
Further, increase magnetic valve and manually-operated gate on each angle nitrogen pipeline, automatically open when nitrogen blowing, manually close while having purged; The control end of described magnetic valve is connected to the DCS/PLC switch board.
The present invention has following beneficial effect:
Because the present invention installs pneumatic fast valve on rough gas thing arm and four jiaos of arms, when MFT moves, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas, has effectively prevented that fuel gas from entering burner hearth and blasting.And, for the situation that causes the valve bite or fit badly because of pipeline incrustation, the present invention increases nitrogen extinguishing on each angle burner arm of coal gas, to causing the valve bite because of pipeline incrustation or fitting badly, causes that the coal gas that leaks, by the nitrogen shutoff, has effectively guaranteed the safety of boiler.
The accompanying drawing explanation
Fig. 1 is gas boiler fast fire-extinguishing apparatus schematic diagram of the present invention.
The specific embodiment
The method of gas boiler quick extinguishing of the present invention is: on rough gas east, west arm and four jiaos of arms, pneumatic fast valve is installed, when MFT moves, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas; Simultaneously, before last one valve of each angle burner arm of coal gas, pass into nitrogen and carry out shutoff; Cause that to causing the valve bite because of pipeline incrustation or fitting badly the coal gas that leaks is by the nitrogen shutoff.
In order to realize said method, the present invention proposes the gas boiler fast fire-extinguishing apparatus as Fig. 1: this device comprises each gas piping that passes into burner hearth, and pneumatic fast valve is installed respectively on gas piping, and each pneumatic fast valve is connected to air accumulator by tracheae.Controlled valve is housed between pipeline and pneumatic fast valve in order to control the pneumatic operated valve source of the gas; The control that starts fast valve is completed jointly by nitrogen, magnetic valve, reversal valve, electric control box, and electric control box is contained in scene, if to facilitate quick closedown while pinpointing the problems at the scene; The electric control box setting on the spot/distant place change-over switch, it is to control pneumatic fast valve switch on Central Control Room DCS picture that a distant place is controlled; Operate at ordinary times controlled position far away, control if switch to when pneumatic operated valve breaks down on the spot, overhaul processing, prevent in control far away as thinking operation accidental injury maintainer.Magnetic valve act as to obtain electric startup operated pneumatic valve, and dead electricity is closed; Thereby magnetic valve obtains when electric and drives reversal valve work and make cylinder be filled with nitrogen to open valve, during dead electricity, magnetic valve drives reversal valve gas circuit is closed, thereby the pneumatic operated valve pressure release makes valve closing.
In addition, before last one valve of each angle burner arm of coal gas, perforate connects nitrogen pipeline, and described nitrogen pipeline is connected to nitrogen cylinder.Described pneumatic fast valve operating voltage is 24VDC.Described pneumatic fast valve work bleed pressure remains between 0.45-0.6MPa.Described pneumatic fast valve is connected with a working power and a stand-by power supply.Increase magnetic valve and manually-operated gate on each angle nitrogen pipeline, automatically open when nitrogen blowing, manually close while having purged; The control end of described magnetic valve is connected to the DCS/PLC switch board; this switch board is factory's existing equipment; pneumatic operated valve is controlled two kinds, be divided on the spot/distant place control mode; distant place control connection is to Central Control Room DCS/PLC system control cabinet; realize operated from a distance control on the DCS/PLC system interface; it is in order to alleviate operations staff's working strength that purpose is controlled in operated from a distance; can realize detecting while possessing the MFT operation condition when the DCS/PLC system; the DCS/PLC control system is sent operation condition automatically, thereby the quick closedown operated pneumatic valve is protected whole steam generator system.
Nitrogen extinguishing of the present invention with DCS the PLC program control system, increase interlock system, when boiler normally moves, as long as the MFT action, nitrogen extinguishing device magnetic valve is automatically opened immediately and is carried out shutoff.Remove interlocking when ignition of the boiler, the manual unlocking magnetic valve is controlled with the place ahead manually operated door when ignition of the boiler.
Claims (4)
1. the method for a gas boiler quick extinguishing, is characterized in that, on coal gas east, west arm and four jiaos of arms, pneumatic fast valve is installed, and when MFT moves, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas; Simultaneously, before last one valve of each angle burner arm of coal gas, pass into nitrogen and carry out shutoff; Cause that to causing the valve bite because of pipeline incrustation or fitting badly the coal gas that leaks is by the nitrogen shutoff.
2. a gas boiler fast fire-extinguishing apparatus of realizing the described method of claim 1, it is characterized in that, comprise each gas piping that passes into burner hearth, pneumatic fast valve is installed respectively on gas piping, each pneumatic fast valve is connected to air accumulator by tracheae, before last one valve of each angle burner arm of coal gas, perforate connects nitrogen pipeline, and described nitrogen pipeline is connected to nitrogen cylinder; Described pneumatic fast valve is connected with a working power and a stand-by power supply; Described pneumatic fast valve operating voltage is 24VDC.
3. gas boiler fast fire-extinguishing apparatus according to claim 2, is characterized in that, described pneumatic fast valve work bleed pressure remains between 0.45-0.6MPa.
4. gas boiler fast fire-extinguishing apparatus according to claim 2, is characterized in that, increases magnetic valve and manually-operated gate on each angle nitrogen pipeline, when nitrogen blowing, automatically opens, and while having purged, manually closes; The control end of described magnetic valve is connected to the DCS/PLC switch board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310353548.XA CN103423767B (en) | 2013-08-14 | 2013-08-14 | A kind of method of gas boiler quick extinguishing and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310353548.XA CN103423767B (en) | 2013-08-14 | 2013-08-14 | A kind of method of gas boiler quick extinguishing and device |
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| CN103423767A true CN103423767A (en) | 2013-12-04 |
| CN103423767B CN103423767B (en) | 2016-04-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980919A (en) * | 2014-05-19 | 2014-08-13 | 攀钢集团西昌钢钒有限公司 | Coke oven gas pipeline of boiler and cleaning method thereof |
| CN104089300A (en) * | 2014-07-09 | 2014-10-08 | 江苏永钢集团有限公司 | Safety control method for preventing tempering explosion of gas boiler |
| CN106251565A (en) * | 2016-08-31 | 2016-12-21 | 西安热工研究院有限公司 | A kind of air preheater incipient fire warning system based on graphical analysis |
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| JP2000254244A (en) * | 1999-03-12 | 2000-09-19 | Kooatsu:Kk | Container valve for fire extinguisher storage container |
| CN201546960U (en) * | 2009-11-10 | 2010-08-11 | 平顶山市三源制氢有限公司 | Coke oven coal gas hydrogen production screw compressor sealing gas device |
| CN102284159A (en) * | 2010-06-16 | 2011-12-21 | 基德科技公司 | Fire suppression system |
| CN202813439U (en) * | 2012-10-17 | 2013-03-20 | 山东中实易通集团有限公司 | Ignition system for preventing fuel oil from remaining in oil gun |
-
2013
- 2013-08-14 CN CN201310353548.XA patent/CN103423767B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000254244A (en) * | 1999-03-12 | 2000-09-19 | Kooatsu:Kk | Container valve for fire extinguisher storage container |
| CN201546960U (en) * | 2009-11-10 | 2010-08-11 | 平顶山市三源制氢有限公司 | Coke oven coal gas hydrogen production screw compressor sealing gas device |
| CN102284159A (en) * | 2010-06-16 | 2011-12-21 | 基德科技公司 | Fire suppression system |
| CN202813439U (en) * | 2012-10-17 | 2013-03-20 | 山东中实易通集团有限公司 | Ignition system for preventing fuel oil from remaining in oil gun |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980919A (en) * | 2014-05-19 | 2014-08-13 | 攀钢集团西昌钢钒有限公司 | Coke oven gas pipeline of boiler and cleaning method thereof |
| CN104089300A (en) * | 2014-07-09 | 2014-10-08 | 江苏永钢集团有限公司 | Safety control method for preventing tempering explosion of gas boiler |
| CN106251565A (en) * | 2016-08-31 | 2016-12-21 | 西安热工研究院有限公司 | A kind of air preheater incipient fire warning system based on graphical analysis |
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| Publication number | Publication date |
|---|---|
| CN103423767B (en) | 2016-04-20 |
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Effective date of registration: 20170824 Address after: 715405 Longmen Town, Hancheng, Shaanxi Patentee after: Shaanxi Huafu New Energy Co.,Ltd. Address before: 710018 No. 5, North Second Ring Road, Xi'an, Shaanxi Patentee before: Shaan Steel Group Co., Ltd. |