CN105927859A - Safety protection system for water seal of gas pipeline - Google Patents
Safety protection system for water seal of gas pipeline Download PDFInfo
- Publication number
- CN105927859A CN105927859A CN201610400435.4A CN201610400435A CN105927859A CN 105927859 A CN105927859 A CN 105927859A CN 201610400435 A CN201610400435 A CN 201610400435A CN 105927859 A CN105927859 A CN 105927859A
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- Prior art keywords
- gas
- boiler
- control system
- ironmaking
- urgency
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a safety protection system for a water seal of a gas pipeline. The safety protection system comprises a boiler which communicates with a gas main through a plurality of gas branch pipes equipped with fast shutoff valves, wherein the water seal is arranged on the gas main; the gas main is connected with an ironmaking escaped gas treatment system through a gas escape pipe equipped with a gas escape valve; a boiler circuit control system is electrically connected with a boiler sudden-stop protection system; the boiler sudden-stop protection system is electrically connected with all the fast shutoff valve and an ironmaking gas PLC control system; the ironmaking gas PLC control system is electrically connected with the gas escape valve; after receiving a boiler fault signal, the boiler sudden-stop protection system controls the closing of all the fast shutoff valves and sends a gas escape valve opening signal to the ironmaking gas PLC control system, thereby enabling the ironmaking gas PLC control system to open the gas escape valve. The safety protection system provided by the invention has the advantage that the water seal on the gas main can be effectively protected from breakdown during a sudden stop of the boiler.
Description
Technical field
The present invention relates to coal gas electricity generation boiler technical field, be specifically related to a kind of gas piping water seal safety system.
Background technology
In power plant's coal gas electricity generation boiler; boiler is connected with gas main by some branch gas tubes; gas main is provided with to seal the water seal of gas main; being respectively arranged with the fast cutting valve of energy folding branch gas tube on every branch gas tube, the folding of all fast cutting valves is controlled by boiler urgency protection of boiler during shutdown period system.When gas fired-boiler works; boiler urgency protection of boiler during shutdown period system controls all fast cutting valves and opens respective branch gas tube; make coal gas can enter boiler furnace from coal gas outside ductwork through gas main and branch gas tube; when gas fired-boiler break down and during urgent blowing out; boiler electricity path control system can send boiler failure signal to boiler urgency protection of boiler during shutdown period system; boiler urgency protection of boiler during shutdown period system can control the fast cutting valve closing on all branch gas tubes after receiving boiler failure signal, but owing to needing coal gas amount up to 110000m when every boiler normally produces3/ h, after boiler urgency protection of boiler during shutdown period system controls the fast cutting valve closing on all branch gas tubes because of boiler shutdown, makes up to 110000 m3The coal gas of/h disables immediately, causes the pressure moment of now gas main to raise, so that the water seal on gas main is breakdown, causes the gas leak of gas main, cause personnel's gas poisoning to occur, and hidden danger has been buried in the safety in production for workman.
Summary of the invention
It is an object of the invention to provide the gas piping water seal safety system that a kind of water seal when can effectively prevent boiler urgent blowing out on gas main is breakdown.
nullFor achieving the above object，Present invention employs following technical scheme: described a kind of gas piping water seal safety system，Including boiler、Boiler electricity path control system、Boiler urgency protection of boiler during shutdown period system、Gas main、Ironmaking coal gas PLC control system、And in order to process the ironmaking emission coal gas processing system of emission coal gas，Described boiler is connected with gas main equipped with the branch gas tube cutting valve soon by some，Gas main is provided with to seal the water seal of gas main，Gas main band is by being connected with ironmaking emission coal gas processing system equipped with the coal gas diffusion pipe of gas bleeding valve，Described boiler electricity path control system electrically connects with boiler urgency protection of boiler during shutdown period system，Boiler urgency protection of boiler during shutdown period system cuts valve soon with all of also simultaneously and ironmaking coal gas PLC control system electrically connects，Ironmaking coal gas PLC control system electrically connects with gas bleeding valve；When boiler urgency protection of boiler during shutdown period system receives the boiler failure signal that boiler electricity path control system sends; boiler urgency protection of boiler during shutdown period system can control to close all of cut valve soon and sends gas bleeding valve opening signal to ironmaking coal gas PLC control system simultaneously; ironmaking coal gas PLC control system can turn on the gas-fire diffusion valve after receiving gas bleeding valve opening signal, makes the coal gas in gas main can enter to smelt iron emission coal gas processing system by coal gas diffusion bank of tubes.
Further; aforesaid a kind of gas piping water seal safety system; wherein: on gas main, be additionally provided with the pressure transmitter electrically connected with boiler urgency protection of boiler during shutdown period system, described pressure transmitter can detect gas main in real time gas main force value the gas main force value of gas main detection obtained are sent to boiler urgency protection of boiler during shutdown period system in real time.
Further, aforesaid a kind of gas piping water seal safety system, wherein: after boiler urgency protection of boiler during shutdown period system receives the boiler failure eliminating signal that boiler electricity path control system sends, in boiler urgency protection of boiler during shutdown period system can first judge now whether gas main force value is in pipe safety force value, when judging that now gas main force value is in pipe safety force value, boiler urgency protection of boiler during shutdown period system can be opened and all of cut valve soon, and send gas bleeding valve shutdown signal to ironmaking coal gas PLC control system simultaneously, ironmaking coal gas PLC control system can close gas bleeding valve after receiving gas bleeding valve shutdown signal.
Further, aforesaid a kind of gas piping water seal safety system, wherein: described pipe safety force value is 0～15KPa.
Further, aforesaid a kind of gas piping water seal safety system, wherein: described pipe safety force value is 5～15KPa.
Further, aforesaid a kind of gas piping water seal safety system, wherein: boiler urgency protection of boiler during shutdown period system is electrically connected with ironmaking coal gas PLC control system by optical fiber.
By the enforcement of technique scheme; the invention has the beneficial effects as follows: when the urgent blowing out of boiler; can effectively reduce the pipeline pressure of gas main; prevent water seal because of the generation of the excessive and breakdown situation of instantaneous pipeline pressure of gas main; effectively protect water seal; avoiding the generation of the gas leak situation caused because water seal is breakdown, the safety in production for workman provides guarantee.
Accompanying drawing explanation
Fig. 1 is the operation principle schematic diagram of a kind of gas piping water seal safety system of the present invention.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
nullAs shown in Figure 1，Described a kind of gas piping water seal safety system，Including boiler 1、Boiler electricity path control system 2、Boiler urgency protection of boiler during shutdown period system 3、Gas main 4、Ironmaking coal gas PLC control system 6、And in order to process the ironmaking emission coal gas processing system 5 of emission coal gas，Described boiler 1 is connected with gas main 4 equipped with the branch gas tube 8 cutting valve 7 soon by some，Gas main 4 is provided with to seal the water seal 9 of gas main 4，Gas main 4 band is by being connected with ironmaking emission coal gas processing system 5 equipped with the coal gas diffusion pipe 11 of gas bleeding valve 10，Described boiler electricity path control system 2 electrically connects with boiler urgency protection of boiler during shutdown period system 3，Boiler urgency protection of boiler during shutdown period system 3 cuts valve 7 soon with all of the most simultaneously and ironmaking coal gas PLC control system 6 electrically connects，Ironmaking coal gas PLC control system 6 electrically connects with gas bleeding valve 10；When boiler urgency protection of boiler during shutdown period system 3 receives the boiler failure signal that boiler electricity path control system 2 sends; boiler urgency protection of boiler during shutdown period system 3 can control to close all of cut valve 7 soon and sends gas bleeding valve opening signal to ironmaking coal gas PLC control system 6 simultaneously; ironmaking coal gas PLC control system 6 can turn on the gas-fire diffusion valve 10 after receiving gas bleeding valve opening signal, makes the coal gas in gas main 4 can be entered by coal gas diffusion pipe 11 and smelts iron emission coal gas processing system 5；In the present embodiment; the pressure transmitter 12 electrically connected with boiler urgency protection of boiler during shutdown period system 3 it is additionally provided with on gas main 4; gas main force value that described pressure transmitter 12 can detect gas main 4 in real time the gas main force value of gas main 4 detection obtained are sent to boiler urgency protection of boiler during shutdown period system 3 in real time, so can improve equipment safety in operation；In the present embodiment, after boiler urgency protection of boiler during shutdown period system 3 receives the boiler failure eliminating signal that boiler electricity path control system 2 sends, in boiler urgency protection of boiler during shutdown period system 3 can first judge now whether gas main force value is in pipe safety force value, when judging that now gas main force value is in pipe safety force value, boiler urgency protection of boiler during shutdown period system 3 can be opened and all of cut valve 7 soon, and send gas bleeding valve shutdown signal to ironmaking coal gas PLC control system 6 simultaneously, ironmaking coal gas PLC control system 6 can close gas bleeding valve 10 after receiving gas bleeding valve shutdown signal, so can improve equipment safety in operation further；In the present embodiment, described pipe safety force value is 0～15KPa, and preferred pipeline safe pressure value is 5～15KPa；In the present embodiment, boiler urgency protection of boiler during shutdown period system 3 is electrically connected with ironmaking coal gas PLC control system 6 by optical fiber, so can carry out signal transmission quickly；
The operation principle of the present invention is as follows:
nullWhen the urgent blowing out of boiler，Boiler electricity path control system 2 can send boiler failure signal to boiler urgency protection of boiler during shutdown period system 3，After boiler urgency protection of boiler during shutdown period system 3 receives boiler failure signal，Can control to close and all of cut valve 7 soon、And send gas bleeding valve opening signal to ironmaking coal gas PLC control system 6 simultaneously，Ironmaking coal gas PLC control system 6 can turn on the gas-fire diffusion valve 10 after receiving gas bleeding valve opening signal，Gas main 4 is connected with ironmaking emission coal gas processing system 5，Make the coal gas in gas main 4 can enter ironmaking emission coal gas processing system 5 by coal gas diffusion pipe 11，Thus effectively reduce the pipeline pressure of gas main 4，Prevent water seal 9 because of the generation of the excessive and breakdown situation of instantaneous pipeline pressure of gas main 4，Effectively protect water seal 9，Avoid the generation of the gas leak situation caused because water seal 9 is breakdown，Safety in production for workman provides guarantee；
After boiler failure is got rid of, boiler electricity path control system 2 can send boiler failure to boiler urgency protection of boiler during shutdown period system 3 and get rid of signal, after boiler urgency protection of boiler during shutdown period system 3 receives the boiler failure eliminating signal that boiler electricity path control system 2 sends, in boiler urgency protection of boiler during shutdown period system 3 can first judge now whether gas main force value is in the pipe safety force value of 0～15KPa, when judging that now gas main force value is in pipe safety force value, boiler urgency protection of boiler during shutdown period system 3 can be opened and all of cut valve 7 soon, and send gas bleeding valve shutdown signal to ironmaking coal gas PLC control system 6 simultaneously, ironmaking coal gas PLC control system 6 can close gas bleeding valve 10 after receiving gas bleeding valve shutdown signal.The invention have the advantage that when the urgent blowing out of boiler; can effectively reduce the pipeline pressure of gas main; prevent water seal because of the generation of the excessive and breakdown situation of instantaneous pipeline pressure of gas main; effectively protect water seal; avoiding the generation of the gas leak situation caused because water seal is breakdown, the safety in production for workman provides guarantee.
Claims (6)
1. a gas piping water seal safety system, it is characterized in that: include boiler, boiler electricity path control system, boiler urgency protection of boiler during shutdown period system, gas main, ironmaking coal gas PLC control system, and in order to process the ironmaking emission coal gas processing system of emission coal gas, described boiler is connected with gas main equipped with the branch gas tube cutting valve soon by some, gas main is provided with to seal the water seal of gas main, gas main band is by being connected with ironmaking emission coal gas processing system equipped with the coal gas diffusion pipe of gas bleeding valve, described boiler electricity path control system electrically connects with boiler urgency protection of boiler during shutdown period system, boiler urgency protection of boiler during shutdown period system cuts valve soon with all of also simultaneously and ironmaking coal gas PLC control system electrically connects, ironmaking coal gas PLC control system electrically connects with gas bleeding valve；When boiler urgency protection of boiler during shutdown period system receives the boiler failure signal that boiler electricity path control system sends; boiler urgency protection of boiler during shutdown period system can control to close all of cut valve soon and sends gas bleeding valve opening signal to ironmaking coal gas PLC control system simultaneously; ironmaking coal gas PLC control system can turn on the gas-fire diffusion valve after receiving gas bleeding valve opening signal, makes the coal gas in gas main can enter to smelt iron emission coal gas processing system by coal gas diffusion bank of tubes.
A kind of gas piping water seal safety system the most according to claim 1; it is characterized in that: be additionally provided with the pressure transmitter electrically connected with boiler urgency protection of boiler during shutdown period system on gas main, gas main force value that described pressure transmitter can detect gas main in real time the gas main force value of gas main detection obtained are sent to boiler urgency protection of boiler during shutdown period system in real time.
A kind of gas piping water seal safety system the most according to claim 2, it is characterized in that: after boiler urgency protection of boiler during shutdown period system receives the boiler failure eliminating signal that boiler electricity path control system sends, in boiler urgency protection of boiler during shutdown period system can first judge now whether gas main force value is in pipe safety force value, when judging that now gas main force value is in pipe safety force value, boiler urgency protection of boiler during shutdown period system can be opened and all of cut valve soon, and send gas bleeding valve shutdown signal to ironmaking coal gas PLC control system simultaneously, ironmaking coal gas PLC control system can close gas bleeding valve after receiving gas bleeding valve shutdown signal.
A kind of gas piping water seal safety system the most according to claim 3, it is characterised in that: described pipe safety force value is 0～15KPa.
A kind of gas piping water seal safety system the most according to claim 4, it is characterised in that: described pipe safety force value is 5～15KPa.
A kind of gas piping water seal safety system the most according to claim 4, it is characterised in that: boiler urgency protection of boiler during shutdown period system is electrically connected with ironmaking coal gas PLC control system by optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400435.4A CN105927859A (en) | 2016-06-08 | 2016-06-08 | Safety protection system for water seal of gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400435.4A CN105927859A (en) | 2016-06-08 | 2016-06-08 | Safety protection system for water seal of gas pipeline |
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| CN105927859A true CN105927859A (en) | 2016-09-07 |
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| CN201610400435.4A Pending CN105927859A (en) | 2016-06-08 | 2016-06-08 | Safety protection system for water seal of gas pipeline |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201141615Y (en) * | 2007-11-27 | 2008-10-29 | 中冶华天工程技术有限公司 | Blast furnace gas supplying structure for high-proportion mixed burning blast furnace gas coal-fired boiler |
| CN201232065Y (en) * | 2008-07-31 | 2009-05-06 | 武汉钢铁(集团)公司 | Blast furnace gas automatic bleeding device |
| CN201793590U (en) * | 2010-06-30 | 2011-04-13 | 芜湖新兴铸管有限责任公司 | Blast furnace gas diffusing facility |
| 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 |
| CN205247175U (en) * | 2015-12-25 | 2016-05-18 | 新兴铸管股份有限公司 | Automatic device that diffuses of coal gas |
| CN205824615U (en) * | 2016-06-08 | 2016-12-21 | 江苏永钢集团有限公司 | A kind of gas piping water seal safety system |
-
2016
- 2016-06-08 CN CN201610400435.4A patent/CN105927859A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201141615Y (en) * | 2007-11-27 | 2008-10-29 | 中冶华天工程技术有限公司 | Blast furnace gas supplying structure for high-proportion mixed burning blast furnace gas coal-fired boiler |
| CN201232065Y (en) * | 2008-07-31 | 2009-05-06 | 武汉钢铁(集团)公司 | Blast furnace gas automatic bleeding device |
| CN201793590U (en) * | 2010-06-30 | 2011-04-13 | 芜湖新兴铸管有限责任公司 | Blast furnace gas diffusing facility |
| 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 |
| CN205247175U (en) * | 2015-12-25 | 2016-05-18 | 新兴铸管股份有限公司 | Automatic device that diffuses of coal gas |
| CN205824615U (en) * | 2016-06-08 | 2016-12-21 | 江苏永钢集团有限公司 | A kind of gas piping water seal safety system |
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Application publication date: 20160907 |