CN103994328B - Coal gas purges safe displacement apparatus - Google Patents
Coal gas purges safe displacement apparatus Download PDFInfo
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- CN103994328B CN103994328B CN201410211821.XA CN201410211821A CN103994328B CN 103994328 B CN103994328 B CN 103994328B CN 201410211821 A CN201410211821 A CN 201410211821A CN 103994328 B CN103994328 B CN 103994328B
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Abstract
The invention belongs to coal gas purging field, specifically a kind of coal gas purges safe displacement apparatus.The nitrogen pipeline connecting source nitrogen is connected on female pipe, the air duct connecting air-source is connected on female pipe, it is connected with the total butterfly valve of nitrogen from source nitrogen in turn to female pipe direction on nitrogen pipeline, diffuse before nitrogen blank-plate valve, nitrogen blank-plate valve, it is connected with the total butterfly valve of air from air-source in turn to female pipe direction on air duct, diffuse before air blank-plate valve, air blank-plate valve, purging house steward is had to diffuse on female pipe, female pipe after purging house steward diffuses connects many root system purging arm, the first purging valve is had successively on every root system purging arm, flexible pipe, second purging valve.This invention simplifies equipment, optimize operating procedure, largely avoid maloperation.
Description
Technical field
The invention belongs to coal gas purging field, specifically a kind of coal gas purges safe displacement apparatus.
Background technology
Coal gas is the fuel gas in life, production, supplies people's energy.But we often occur in use course of gas
The event such as gas explosion, poisoning, the nitrogen used during purging has smothering action to people, along with the big production development of industry, coal gas
Manufacture is greatly increased, and it is big that the accident of there occurs involves scope, and group dead group wound happens occasionally.And be thing when repair apparatus and pipeline
Therefore take place frequently the stage, it is often necessary to purging displacement operation, especially iron and steel enterprise's blast furnace gas, coke-stove gas, coal gas of converter, hard stove coal
During the operations such as gas, operating procedure is complicated, and program requires strict, occurs leakage hazard scope wide during maloperation, easily causes person peace
Full accident.
Therefore, need to optimize purging replacing apparatus for gas poisoning, nitrogen link occurred frequently of suffocating, simplify equipment installation,
The number of operations of minimizing personnel, reduces the probability of maloperation.
Summary of the invention
The technical problem to be solved is: how to solve security incident problem and reduction in existing coal gas purging and misses
The probability propagandized.
The technical solution adopted in the present invention is: coal gas purges safe displacement apparatus, connects the nitrogen pipeline of source nitrogen even
Receiving on female pipe, the air duct connecting air-source is connected on female pipe, on nitrogen pipeline from source nitrogen to female pipe direction successively
Connection is diffused before having the total butterfly valve of nitrogen, nitrogen blank-plate valve, nitrogen blank-plate valve, on air duct from air-source to female pipe direction successively
Connection is diffused before having the total butterfly valve of air, air blank-plate valve, air blank-plate valve, female pipe has purging house steward to diffuse, purging house steward
Female pipe after diffusing connects many root system purging arm, every root system purging arm has successively the first purging valve, flexible pipe, the
Two purging valves.
The invention has the beneficial effects as follows: this invention simplifies equipment, optimize operating procedure, largely avoid behaviour by mistake
Make.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Wherein, 1, the total butterfly valve of air, 2, the total butterfly valve of nitrogen, 3, diffuse before air blank-plate valve, 4, diffuse before nitrogen blank-plate valve,
5, nitrogen blank-plate valve, 6, air blank-plate valve, 7, purging house steward diffuse, the 8, first purging valve, the 9, second purging valve, 10, soft
Pipe.
Detailed description of the invention
Illustrate as a example by blast furnace gas, through TRT, CCPP comprehensive utilization generating after blast furnace gas removing dust, meet country's joint
The novel device of energy environmental protection.Need to exit coal gas when equipment stops transport maintenance, equipment, pipeline enter people and check repairing.Different maintenance
Inside having different purging displacement position and program, wherein subsection blowing is most commonly seen.
Owing to coal gas can not need with nitrogen, steam or qualified cigarette with air direct replacement in case meeting fire and exploding
Gas is replaced, but the most commonly used be nitrogen displacement, use steam ejection.When confined space or the confined space need to enter people, also need to use
Air displacement nitrogen.At this moment there are the modes such as air-source purging, forced ventilation or gravity-flow ventilation.Therefore one section of system is connected to two and blows
Sweeping mouth, one is nitrogen blow valve port, and another is air blow valve port.Source of the gas and blow valve port, with being flexible coupling, are wanted in purging program
After asking purging detection qualified, it is flexible coupling and to disconnect, have an obvious cut-off point.Air with pressure or nitrogen purging time connect or
Disconnecting is flexible coupling certain order, hurts sb.'s feelings in case hose connection collapses to open.Oxygen content inspection in the most most important confined space
Survey qualified after, nitrogen is flexible coupling and necessarily confirms to disconnect, in case valve the most sternly seals in nitrogen and makes personnel suffocate the casualties.The case of this respect
Example is not within minority.
Original purging system need to carry out more being flexible coupling and break step, performs correct controlled valve order, to valve
The tightness of door has higher requirement, forms normalizing operation and is solidified on operation order, and the different methods of operation has more operation
Standard, maloperation probability strengthens.
As it is shown in figure 1, the present invention is to install nitrogen blank-plate valve additional after the total butterfly valve of nitrogen, install air additional after the total butterfly valve of air blind
Plate valve, diffuses before filling air blank-plate valve before air blank-plate valve, diffuses, air blank-plate valve before nitrogen blank-plate valve before filling nitrogen blank-plate valve
Diffuse with dress purging house steward after nitrogen blank-plate valve, to ensure the pressure release when operating nitrogen blank-plate valve and air blank-plate valve.Nitrogen with
Air header merges into a purging house steward, draws a purging arm at each segmented system, can all make nitrogen dual-purpose with air
Purging.First purging valve and the second purging valve are installed before and after flexible pipe, can effectively prevent maloperation.
Purge operations control dish can carry out electric interlock three kinds of states are set: operating handle when " RUN " state,
The interlocking total butterfly valve of nitrogen, the total butterfly valve of air, nitrogen blank-plate valve, air blank-plate valve are in " closedown " position, and purging system exits；Operation
Handle is when " nitrogen purging " state, and the total butterfly valve of nitrogen and nitrogen blank-plate valve are in " opening " position, and the total butterfly valve of air is blind with air
Plate valve carries out nitrogen purging at " closedown " position, purging system；Operating handle when " air purging " state, the total butterfly valve of air with
Air blank-plate valve is in " opening " position, and the total butterfly valve of nitrogen and nitrogen blank-plate valve are in " closedown " position, and purging system carries out air and blows
Sweeping, above state utilizes butterfly door limiting contact to interlock, it is ensured that equipment working state does not occur maloperation.
Each purging system is reduced by a blow line, i.e. reduces operating procedure, it is to avoid nitrogen is connected mistiming with air
Operation.Increasing by two blank-plate valve, improve the security of system shutdown, electric interlocking installation prevents maloperation.
Simplify equipment, optimize operating procedure, largely avoid maloperation.
Claims (1)
1. coal gas purges safe displacement apparatus, it is characterised in that: the nitrogen pipeline connecting source nitrogen is connected on female pipe, connects sky
The air duct of source of the gas is connected on female pipe, on nitrogen pipeline from source nitrogen to female pipe direction be connected with in turn the total butterfly valve of nitrogen,
Diffuse before nitrogen blank-plate valve, nitrogen blank-plate valve, on air duct from air-source to female pipe direction be connected with in turn the total butterfly valve of air,
Diffuse before air blank-plate valve, air blank-plate valve, female pipe has purging house steward diffuse, the female pipe after purging house steward diffuses connects many
Root system purging arm, every root system purging arm has the first purging valve, flexible pipe, the second purging valve successively, at purging
Carry out electric interlock on operation control panel and three kinds of states be set: operating handle when " RUN " state, the interlock total butterfly valve of nitrogen, sky
The total butterfly valve of gas, nitrogen blank-plate valve, air blank-plate valve are in " closedown " position, and purging system exits；Operating handle is at " nitrogen purging "
During state, the total butterfly valve of nitrogen and nitrogen blank-plate valve in " opening " position, the total butterfly valve of air and air blank-plate valve in " closedown " position,
Purging system carries out nitrogen purging；Operating handle is when " air purging " state, and the total butterfly valve of air and air blank-plate valve " are being beaten
Open " position, the total butterfly valve of nitrogen and nitrogen blank-plate valve are in " closedown " position, and purging system carries out air purging, and above state utilizes
Interlock in butterfly door limiting contact, it is ensured that equipment working state does not occur maloperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211821.XA CN103994328B (en) | 2014-05-20 | 2014-05-20 | Coal gas purges safe displacement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211821.XA CN103994328B (en) | 2014-05-20 | 2014-05-20 | Coal gas purges safe displacement apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103994328A CN103994328A (en) | 2014-08-20 |
| CN103994328B true CN103994328B (en) | 2016-08-24 |
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|---|---|---|---|
| CN201410211821.XA Active CN103994328B (en) | 2014-05-20 | 2014-05-20 | Coal gas purges safe displacement apparatus |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105253628B (en) * | 2015-08-07 | 2019-01-18 | 上海空间推进研究所 | The air-path control system of cushion transport equipment |
| CN108204524A (en) * | 2016-12-20 | 2018-06-26 | 上海船厂船舶有限公司 | Fuel gas pipeline and its method for maintaining |
| CN107150055A (en) * | 2017-07-04 | 2017-09-12 | 山东中实易通集团有限公司 | The auxiliary vapour purging system and method not restricted before a kind of unit starting by steam |
| CN114951156B (en) * | 2022-05-18 | 2023-10-20 | 广东韶钢松山股份有限公司 | Purging device and method for air supply equipment, air supply system, equipment and storage medium |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7708859B2 (en) * | 2004-04-30 | 2010-05-04 | Lam Research Corporation | Gas distribution system having fast gas switching capabilities |
| CN201177158Y (en) * | 2008-04-16 | 2009-01-07 | 邯郸钢铁股份有限公司 | Multichannel gas buffering dispenser |
| CN201751673U (en) * | 2010-07-15 | 2011-02-23 | 山西太钢不锈钢股份有限公司 | Control device of purging gas pipeline |
| CN101994905A (en) * | 2010-10-25 | 2011-03-30 | 上海舜华新能源***有限公司 | Hydrogen discharging column with purging function for hydrogen filling station and purging method |
| CN202024088U (en) * | 2011-01-17 | 2011-11-02 | 山西太钢不锈钢股份有限公司 | Gas injection replacement device |
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2014
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| CN103994328A (en) | 2014-08-20 |
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