CN103423767B - A kind of method of gas boiler quick extinguishing and device - Google Patents
A kind of method of gas boiler quick extinguishing and device Download PDFInfo
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- CN103423767B CN103423767B CN201310353548.XA CN201310353548A CN103423767B CN 103423767 B CN103423767 B CN 103423767B CN 201310353548 A CN201310353548 A CN 201310353548A CN 103423767 B CN103423767 B CN 103423767B
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Abstract
The invention discloses a kind of method and device of gas boiler quick extinguishing, it installs pneumatic fast valve on rough gas east, west arm and corner arm, and when MFT action, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas; Meanwhile, before last one valve of coal gas each angle burner arm, pass into nitrogen and carry out shutoff; Cause the coal gas that leaks by nitrogen shutoff to causing valve bite because of pipeline incrustation or fitting badly.The present invention is pneumaticly cut valve soon by changing electronic valve of cutting soon, and adds nitrogen extinguishing, effectively can prevent pipe network decompression and uncontrollable.
Description
Technical field
The invention belongs to 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, and the energy to boiler input has the forms such as the heat energy of chemical energy in fuel, electric energy, high-temperature flue gas, and through boiler conversion, outwards exports steam, high-temperature water or the organic heat carrier with 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 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 are converted to electric energy again.There is provided the boiler of hot water to be called hot-water boiler, be mainly used in life, in industrial production, also have a small amount of application.The boiler producing steam is called steam boiler, often referred to as boiler, is used for thermal power station, boats and ships, locomotive and industrial and mining enterprises.
In prior art, can valve bite be caused because of pipeline incrustation or fit badly during gas boiler fire extinguishing.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 the shortcoming overcoming above-mentioned prior art, provide a kind of method and device of gas boiler quick extinguishing, it is pneumaticly cut valve soon by changing electronic valve of cutting soon, and adds nitrogen extinguishing, effectively can prevent pipe network decompression and uncontrollable.
The object of the invention is to be achieved through the following technical solutions:
First the present invention proposes a kind of method of gas boiler quick extinguishing, and coal gas east, west arm and corner arm install pneumatic fast valve, and when MFT action, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas; Meanwhile, before last one valve of coal gas each angle burner arm, pass into nitrogen and carry out shutoff; Cause the coal gas that leaks by nitrogen shutoff to causing valve bite because of pipeline incrustation or fitting badly.
The present invention also proposes a kind of gas boiler fast fire-extinguishing apparatus realizing said method, comprise each gas piping passing into burner hearth, pneumatic fast valve installed respectively by gas piping, each pneumatic fast valve is connected to air accumulator by tracheae, before last one valve of coal gas each angle burner arm, 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, each angle nitrogen pipeline increases magnetic valve and manually-operated gate, automatically opens when nitrogen purges, manually close when having purged; The control end of described magnetic valve is connected to 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 corner arm, when MFT action, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas, effectively prevent fuel gas and enters burner hearth and blast.And, for the situation causing valve bite because of pipeline incrustation or fit badly, the present invention increases nitrogen extinguishing on the burner arm of coal gas each angle, causes the coal gas that leaks by nitrogen shutoff, effectively ensure that the safety of boiler to causing valve bite because of pipeline incrustation or fitting badly.
Accompanying drawing explanation
Fig. 1 is gas boiler fast fire-extinguishing apparatus schematic diagram of the present invention.
Detailed description of the invention
The method of gas boiler quick extinguishing of the present invention is: on rough gas east, west arm and corner arm, install pneumatic fast valve, and when MFT action, pneumatic fast valve responds action within 1S, and quick closedown cuts off gas; Meanwhile, before last one valve of coal gas each angle burner arm, pass into nitrogen and carry out shutoff; Cause the coal gas that leaks by nitrogen shutoff to causing valve bite because of pipeline incrustation or fitting badly.
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 passing into burner hearth, and pneumatic fast valve installed respectively by 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 pneumatic operated valve source of the gas; Start the control of fast valve jointly to have been come by nitrogen, magnetic valve, reversal valve, electric control box, electric control box is contained in scene, if with facilitate pinpoint the problems at the scene time quick closedown; Electric control box arranges on the spot/distant place change-over switch, and it is control pneumatic fast valve switch on Central Control Room DCS picture that a distant place controls; Operating in controlled position far away at ordinary times, control on the spot if switched to when pneumatic operated valve breaks down, carry out overhaul plan, preventing in control far away as thinking that maintainer is accidentally injured in operation.Magnetic valve act as to obtain electric startup operated pneumatic valve, and dead electricity is closed; Drive reversal valve work make cylinder be filled with nitrogen thus open valve when magnetic valve obtains electric, during dead electricity, magnetic valve drives reversal valve that gas circuit is closed, pneumatic operated valve pressure release thus make valve closing.
In addition, before last one valve of coal gas each angle burner arm, 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.Each angle nitrogen pipeline increases magnetic valve and manually-operated gate, automatically opens when nitrogen purges, manually close when having purged; The control end of described magnetic valve is connected to DCS/PLC switch board; this switch board is factory's existing equipment; pneumatic operated valve controls to be divided on the spot/two kinds, distant place control mode; distant place control connection is to Central Control Room DCS/PLC system control cabinet; DCS/PLC system interface realizes operated from a distance control; it is to alleviate operations staff's working strength that operated from a distance controls object; can realize when DCS/PLC systems axiol-ogy is to when possessing MFT operation condition; DCS/PLC control system sends operation condition automatically, quick closedown operated pneumatic valve thus protect whole steam generator system.
Nitrogen extinguishing DCS of the present invention PLC program control system, increase interlock system, when boiler normally runs, as long as MFT action, nitrogen extinguishing device magnetic valve is automatically opened immediately and is carried out shutoff.Remove interlocking when ignition of the boiler, manual unlocking magnetic valve, controls with front manually operated door when ignition of the boiler.
Claims (3)
1. a gas boiler fast fire-extinguishing apparatus, it is characterized in that, comprise each gas piping passing into burner hearth, pneumatic fast valve installed respectively by gas piping, each pneumatic fast valve is connected to air accumulator by tracheae, before last one valve of coal gas each angle burner arm, 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.
2. gas boiler fast fire-extinguishing apparatus according to claim 1, is characterized in that, described pneumatic fast valve work bleed pressure remains between 0.45-0.6MPa.
3. gas boiler fast fire-extinguishing apparatus according to claim 1, is characterized in that, each angle nitrogen pipeline increases magnetic valve and manually-operated gate, automatically opens, manually close when having purged when nitrogen purges; The control end of described magnetic valve is connected to 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 CN103423767A (en) | 2013-12-04 |
| CN103423767B true CN103423767B (en) | 2016-04-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103980919B (en) * | 2014-05-19 | 2016-05-25 | 攀钢集团西昌钢钒有限公司 | A kind of boiler coke oven gas pipe and method for cleaning 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 |
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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. |
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