CN106481982A - A kind of automatic nitrogen safety purge gaspipe line device - Google Patents
A kind of automatic nitrogen safety purge gaspipe line device Download PDFInfo
- Publication number
- CN106481982A CN106481982A CN201610862508.1A CN201610862508A CN106481982A CN 106481982 A CN106481982 A CN 106481982A CN 201610862508 A CN201610862508 A CN 201610862508A CN 106481982 A CN106481982 A CN 106481982A
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- pneumatic cut
- setting value
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- 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
-
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a kind of automatic nitrogen safety purge gaspipe line device, including self-contained pressure regulator, Hand-operated butterfly valve, pressure gauge, pressure switch, check-valves and pneumatic cut-off valve, it is characterised in that：The self-contained pressure regulator can be automatically adjusted, it is not necessary to external impetus, realize stable nitrogen pressure supply；The Hand-operated butterfly valve is used for cutting off pipeline；The pressure switch provides gas piping low pressure limit dry contact signal, is formed with pneumatic cut-off valve and automatically controls, opens pneumatic cut-off valve less than setting value, closes pneumatic cut-off valve higher than setting value, and setting value has certain dead zone range；The pneumatic cut-off valve and pressure switch formed chain automatically control, the valve type selecting must be gas force closed type；The check-valves is to rely on nitrogen itself to flow and automatic open and close flap, prevents gas medium from flowing backwards.It is an advantage of the invention that preventing gaspipe line tempering and pinking accident from occurring, the security of whole system is improved.
Description
Technical field
The present invention relates to metallurgical gases heating furnace production technical field, more particularly to a kind of automatic nitrogen safety purge coal gas
Piping installation, is particularly well-suited to produce cold-rolled steel coils using continuous annealing furnace.
Background technology
Generally the manual Purge methods of nitrogen are adopted at present using gas-fired furnace gas piping, before blowing out and blow-on operation
Using manual unlocking nitrogen ball valve scavenging pipeline.Short time blowing out（Blind plate is not blocked up）Or upstream coal gas system fault gas pressure is rapid
During drop, gaspipe line stop valve is turned off, but when gaspipe line valve is fitted badly, there is micro gas leak, in waste gas wind
The pump drainage lower pipeline of machine forms negative pressure；Diffusion valve is not turned off or is not closed completely, and air can enter gaspipe line by exhaust stack, with
Coal gas forms gaseous mixture, when in-furnace temperature exceedes coal gas detonation point；Another stove is under keeping warm mode, if closing main gas pipe road
Hand-operated valve, is not turned off main line stop valve, when furnace temperature reduces, burner can automatic ignition can also provide burning things which may cause a fire disaster can occur tempering and
Pinking accident.
Content of the invention
The purpose of the present invention is aiming at the problem of prior art presence, provides a kind of automatic nitrogen safety purge gas pipe
Road device, so that gaspipe line safety is effectively ensured, prevents gaspipe line tempering and pinking accident from occurring, improves the peace of whole system
Quan Xing, reduces production cost.
The principle of the invention is to increase by one after the blank-plate valve on gaspipe line, automatic stop valve and Hand-operated butterfly valve and regulating valve
Road automatic nitrogen supplements pipeline, and the pipeline is made up of some valves, instrument, when gas piping pressure is less than low extreme value, realizes
Low discharge nitrogen is swept to the blowback of gas piping automatically, prevents air from entering gas piping, automatically cuts off when gas pressure is normal
Pipeline, coal gas system normal work are swept in nitrogen blowback.
The object of the present invention is achieved like this：A kind of automatic nitrogen safety purge gaspipe line device, including self-operated type
Pressure-regulating valve, Hand-operated butterfly valve, pressure gauge, pressure switch, check-valves and pneumatic cut-off valve, it is characterised in that：The self-operated type
Pressure-regulating valve, with respect to manual modulation valve, its advantage is to automatically adjust；With respect to electric control valve, its advantage
It is that external impetus are not needed, realizes stable nitrogen pressure supply；The Hand-operated butterfly valve is used for inspecting state, cuts off pipeline；Institute
State pressure switch and gas piping low pressure limit dry contact signal is provided, formed with pneumatic cut-off valve and automatically control, less than setting value
Pneumatic cut-off valve being opened, pneumatic cut-off valve being closed higher than setting value, setting value has certain dead zone range；The pneumatic cut-off valve
With pressure switch formed chain automatically control, the valve type selecting must be gas force closed type, open pneumatic cut-off valve less than setting value, be higher than
Setting value closes pneumatic cut-off valve；The check-valves is to rely on nitrogen itself to flow and automatic open and close flap, for preventing coal gas
The valve that medium flows backwards.
Compared with prior art, it is an advantage of the invention that：Gaspipe line safety is effectively ensured, prevent gaspipe line tempering and
Pinking accident occurs, and improves the security of whole system.
Description of the drawings
Fig. 1：Present configuration figure.
In figure：1st, self-contained pressure regulator 2, Hand-operated butterfly valve 3, pneumatic cut-off valve 4, check-valves 5, pressure gauge 6, pressure
Power is switched.
Specific embodiment
For further describing the present invention, with reference to embodiment and accompanying drawing, the invention will be further described.
As illustrated, a kind of automatic nitrogen safety purge gaspipe line device, including self-contained pressure regulator 1, manually
Butterfly valve 2, pressure gauge 5, pressure switch 6, check-valves 4 and pneumatic cut-off valve 3, it is characterised in that：The self-contained pressure regulator
1, with respect to manual modulation valve, its advantage is to automatically adjust；With respect to electric control valve, its advantage is need not be outer
Portion's power, realizes stable nitrogen pressure supply；The Hand-operated butterfly valve 2 is used for inspecting state, cuts off pipeline；The pressure switch
6 provide gas piping low pressure limit passive contact point signal, are formed with pneumatic cut-off valve 3 and automatically control, open gas less than setting value
Dynamic stop valve 3, cuts out pneumatic cut-off valve 3 higher than setting value, and setting value has certain dead zone range；The detection of the pressure gauge 5 should
Nitrogen supplements the operating pressure of pipeline；The pneumatic cut-off valve 3 and pressure switch 6 formed chain automatically control, the valve type selecting must
Must be gas force closed type, pneumatic cut-off valve 3 be opened less than setting value, close pneumatic cut-off valve 3 higher than setting value；The check-valves 4 is
Nitrogen itself is relied on to flow and automatic open and close flap, for the valve for preventing gas medium from flowing backwards.
Claims (1)
1. a kind of automatic nitrogen safety purge gaspipe line device, including self-contained pressure regulator (1), Hand-operated butterfly valve (2), presses
Power table (5), pressure switch (6), check-valves (4) and pneumatic cut-off valve (3), it is characterised in that：The self-contained pressure regulator
(1), with respect to manual modulation valve, its advantage is to automatically adjust；With respect to electric control valve, its advantage is need not
External impetus, realize stable nitrogen pressure supply；Described Hand-operated butterfly valve (2) are used for inspecting state, cut off pipeline；The pressure
Switch (6) provides gas piping low pressure limit passive contact point signal, is formed with pneumatic cut-off valve (3) and automatically controls, less than setting
Value opens pneumatic cut-off valve (3), closes pneumatic cut-off valve (3) higher than setting value, and setting value has certain dead zone range；The pressure
Power table (5) detects that the nitrogen supplements the operating pressure of pipeline；Pneumatic cut-off valve (3) are chain with pressure switch (6) formation certainly
Dynamic control, the valve type selecting must be gas force closed type, open pneumatic cut-off valve (3) less than setting value, close pneumatic cutting higher than setting value
Disconnected valve (3)；Check-valves (4) are to rely on nitrogen itself to flow and automatic open and close flap, for preventing gas medium from flowing backwards
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862508.1A CN106481982A (en) | 2016-09-29 | 2016-09-29 | A kind of automatic nitrogen safety purge gaspipe line device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610862508.1A CN106481982A (en) | 2016-09-29 | 2016-09-29 | A kind of automatic nitrogen safety purge gaspipe line device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106481982A true CN106481982A (en) | 2017-03-08 |
Family
ID=58269066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610862508.1A Pending CN106481982A (en) | 2016-09-29 | 2016-09-29 | A kind of automatic nitrogen safety purge gaspipe line device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106481982A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949379A (en) * | 2017-04-21 | 2017-07-14 | 山东钢铁集团日照有限公司 | A kind of coal-gas recovering conveyance conduit safety control and method |
| CN108223965A (en) * | 2018-01-03 | 2018-06-29 | 武汉都市环保工程技术股份有限公司 | Coal gas automatic blowing diffusion system |
| CN109386737A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Oxidizing combustible system safety cut-off valve leak detecting device and method |
| CN111120858A (en) * | 2019-11-25 | 2020-05-08 | 宣化钢铁集团有限责任公司 | Exhaust gas recovery control system and control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020195589A1 (en) * | 2001-06-22 | 2002-12-26 | Russ Fredric S. | Method for nitrogen prefill of high pressure oxygen-containing gas line for gasification |
| CN202133294U (en) * | 2011-05-31 | 2012-02-01 | 宁波钢铁有限公司 | Automatic nitrogen purging device for gas pipe line of heating furnace |
| CN102620145A (en) * | 2012-04-27 | 2012-08-01 | 新兴铸管股份有限公司 | Automatic low-pressure protection system for coke oven gas pipeline |
| CN103571985A (en) * | 2013-10-26 | 2014-02-12 | 芜湖新兴铸管有限责任公司 | Safety operation method for gaspipe network in gasometer-free single-seated blast furnace production |
| CN203570703U (en) * | 2013-12-03 | 2014-04-30 | 中天钢铁集团有限公司 | Anti-surge valve air path system of blast furnace blower |
| CN104357646A (en) * | 2014-09-23 | 2015-02-18 | 宁波宝新不锈钢有限公司 | Dual-fuel online fast switch device for annealing furnace |
| CN205091622U (en) * | 2015-09-24 | 2016-03-16 | 潞安卓泰祥和金属科技宜兴有限公司 | A natural gas flow control device for shaft furnace |
-
2016
- 2016-09-29 CN CN201610862508.1A patent/CN106481982A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020195589A1 (en) * | 2001-06-22 | 2002-12-26 | Russ Fredric S. | Method for nitrogen prefill of high pressure oxygen-containing gas line for gasification |
| CN202133294U (en) * | 2011-05-31 | 2012-02-01 | 宁波钢铁有限公司 | Automatic nitrogen purging device for gas pipe line of heating furnace |
| CN102620145A (en) * | 2012-04-27 | 2012-08-01 | 新兴铸管股份有限公司 | Automatic low-pressure protection system for coke oven gas pipeline |
| CN103571985A (en) * | 2013-10-26 | 2014-02-12 | 芜湖新兴铸管有限责任公司 | Safety operation method for gaspipe network in gasometer-free single-seated blast furnace production |
| CN203570703U (en) * | 2013-12-03 | 2014-04-30 | 中天钢铁集团有限公司 | Anti-surge valve air path system of blast furnace blower |
| CN104357646A (en) * | 2014-09-23 | 2015-02-18 | 宁波宝新不锈钢有限公司 | Dual-fuel online fast switch device for annealing furnace |
| CN205091622U (en) * | 2015-09-24 | 2016-03-16 | 潞安卓泰祥和金属科技宜兴有限公司 | A natural gas flow control device for shaft furnace |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949379A (en) * | 2017-04-21 | 2017-07-14 | 山东钢铁集团日照有限公司 | A kind of coal-gas recovering conveyance conduit safety control and method |
| CN109386737A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Oxidizing combustible system safety cut-off valve leak detecting device and method |
| CN109386737B (en) * | 2017-08-09 | 2023-05-09 | 中国石油化工股份有限公司 | Leakage detection device and method for safety cut-off valve of oxygen-enriched fuel system |
| CN108223965A (en) * | 2018-01-03 | 2018-06-29 | 武汉都市环保工程技术股份有限公司 | Coal gas automatic blowing diffusion system |
| CN108223965B (en) * | 2018-01-03 | 2023-09-15 | 中冶南方都市环保工程技术股份有限公司 | Automatic coal gas purging and diffusing system |
| CN111120858A (en) * | 2019-11-25 | 2020-05-08 | 宣化钢铁集团有限责任公司 | Exhaust gas recovery control system and control method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170308 |
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| RJ01 | Rejection of invention patent application after publication |