CN202024088U - Gas injection replacement device - Google Patents
Gas injection replacement device Download PDFInfo
- Publication number
- CN202024088U CN202024088U CN201120012410XU CN201120012410U CN202024088U CN 202024088 U CN202024088 U CN 202024088U CN 201120012410X U CN201120012410X U CN 201120012410XU CN 201120012410 U CN201120012410 U CN 201120012410U CN 202024088 U CN202024088 U CN 202024088U
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- China
- Prior art keywords
- valve
- cut
- gas
- shut
- fuel gas
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a gas injection replacement device, which belongs to the field of fuel gas transportation management and is particularly applied in the field of metallurgy and civil fuel gas transportation management. The gas injection replacement device consists of three shut-off valves and an air release valve and is characterized in that one shut-off valve is connected with high pressure steam, one shut-off valve is connected with high pressure compressed air, one shut-off valve is connected with a bleed-off ejector of a fuel gas pipe, and the air release valve is arranged among the three shut-off valves. The gas injection replacement device solves the problem that the time of purging and replacing operation before the overhaul for the traditional fuel gas equipment is long, so as to improve 50% of operation efficiency and provide a powerful guarantee for fast maintenance and overhaul for a fuel gas system.
Description
Technical field
The utility model belongs to gas supply pipe reason field, especially is suitable for metallurgical, domestic gas conveying management field.
Background technique
Carry out need carrying out coal gas purging, nitrogen replacement operation in gas fittings (facility) maintenance at steel industry, its job step is:
1, coal gas purges.---opening end diffuses, and---pipeline (equipment) initial end is opened blowing medium (nitrogen), and---purging---sample examination detects CO and other gas componant promptly to cut off purging pipeline section (or equipment) gas source (stifled blind plate).
2, nitrogen replacement.Pipeline (equipment) sample examination detects qualified back with air displacement nitrogen, satisfies the requirements for pipeline (equipment) possesses into the interior inspection or the maintenance of getting angry.---the initial end blowing air---changes inner nitrogen---and diffuses end and detects oxygen content simultaneously promptly to stop to purge nitrogen.
Pipeline or equipment are malleation in purging and the replacement process, and the activity duration is long.Blow line long more (or equipment is big more), the activity duration is long more, and it is qualified that for example 300 meters DN2000 pipeline purge time needs could purge more than two hours chemical examination.This purging mode seriously restricts gas pipe line, overhaul of the equipments progress.
Summary of the invention
The utility model aims to provide gas injection displacement apparatus, its objective is to reduce the preceding purging of gas-fired equipment facility maintenance, displacement activity duration, improves operating efficiency.
The utility model is made up of three cut-off valves and an atmospheric valve, it is characterized in that having a cut-off valve to connect high pressure steam, have a cut-off valve to connect high pressure air, have a cut-off valve to connect gas pipeline and diffuse ejector, atmospheric valve is arranged between above-mentioned three cut-off valves.
A cut-off valve is installed between ejector and the gas pipeline.
The problem that the utility model purges before having solved traditional gas-fired equipment facility maintenance, the displacement activity duration is long improves operating efficiency 50%, provides strong guarantee for carrying out the gas burning system Maintenance and Repair fast.
The utlity model has following advantage: ⑴ operating efficiency height.Utilize pressurized operation to purge gas in the displacement pipeline, compare traditional operation under positive pressure operation, save time, improved operating efficiency.
⑵ safe and reliable.Adopt high pressure steam as the injection source of the gas, nitrogen purges the possibility of having avoided air to sneak in the operation process as source purge gas at coal gas, and is therefore safe and reliable.In the replacement process, adopt high pressure air, improved the convection velocity of air in the pipeline, reduced the resident amount of dead angle area nitrogen in pipeline or the equipment, provide safety assurance for the staff goes into interior fire operation.
⑶ easy and simple to handle.By injection gas COMM communication can realize that coal gas purges and pipeline in the working continuously of nitrogen replacement, only need one people can finish whole work procedures.
Description of drawings:
Fig. 1 is the utility model embodiment's a structural representation.
Among the figure, 1, cut-off valve, 2, cut-off valve, 3, cut-off valve, 4, atmospheric valve, 5, ejector, 6, cut-off valve, 7, gas pipe line.
Embodiment:
Embodiment: shown in Figure 1, present embodiment is made up of 1,2,3 and atmospheric valves 4 of three cut-off valves, it is characterized in that cut-off valve 1 connects high pressure steam, and cut-off valve 2 connects high pressure air, cut-off valve 3 connects gas pipeline and diffuses ejector 5, and atmospheric valve 4 is arranged between above-mentioned three cut-off valves.
Cut-off valve 1,2 connects by pipeline, connecting tube between the cut-off valve 1,2 is provided with the arm that connects cut-off valve 3, be provided with atmospheric valve 4 on the arm that connects cut-off valve 3, cut-off valve 3 connects ejector 5 by pipeline, is provided with cut-off valve 6 between ejector 5 and the gas pipeline.
Operating process of the present utility model is: cut-off valve 1,2 and 3 cut out when pipeline or equipment had the combustion gas operation, and atmospheric valve 4 is opened, and guaranteed can not collaborate mutually, influence each other between steam, pressurized air and the combustion gas; When combustion gas stop using to need purged, cut-off valve 1 was opened in choosing, closed immediately when atmospheric valve 4 is emerged steam, opened cut-off valve 3, opened ejector and carried out coal gas and purge (the logical nitrogen of pipeline starting end cooperate purge); Stop steam after the detection of coal gas purging is qualified, closes cut-off valve 1, open cut-off valve 2, ejector carries out the operation of pipeline nitrogen replacement.
Ejector is responsible for the gas in the negative pressure drainage pipeline, and the efficient apparatus that cut-off valve is isolated for this device and gas pipe line cuts off coal gas, prevents gas leakage when this device does not move.
Claims (1)
1. gas injection displacement apparatus, form by three cut-off valves and an atmospheric valve, it is characterized in that having a cut-off valve to connect high pressure steam, have a cut-off valve to connect high pressure air, have a cut-off valve to connect gas pipeline and diffuse ejector, atmospheric valve is arranged between above-mentioned three cut-off valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120012410XU CN202024088U (en) | 2011-01-17 | 2011-01-17 | Gas injection replacement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120012410XU CN202024088U (en) | 2011-01-17 | 2011-01-17 | Gas injection replacement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202024088U true CN202024088U (en) | 2011-11-02 |
Family
ID=44849037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120012410XU Expired - Fee Related CN202024088U (en) | 2011-01-17 | 2011-01-17 | Gas injection replacement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202024088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994328A (en) * | 2014-05-20 | 2014-08-20 | 山西太钢不锈钢股份有限公司 | Coal gas blowing safety replacement device |
| CN104989954A (en) * | 2015-07-08 | 2015-10-21 | 内蒙古包钢钢联股份有限公司 | Device and method used for cleaning jam of coking coal flow adjusting valve of CCPP set |
-
2011
- 2011-01-17 CN CN201120012410XU patent/CN202024088U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994328A (en) * | 2014-05-20 | 2014-08-20 | 山西太钢不锈钢股份有限公司 | Coal gas blowing safety replacement device |
| CN104989954A (en) * | 2015-07-08 | 2015-10-21 | 内蒙古包钢钢联股份有限公司 | Device and method used for cleaning jam of coking coal flow adjusting valve of CCPP set |
| CN104989954B (en) * | 2015-07-08 | 2019-03-29 | 内蒙古包钢钢联股份有限公司 | For clearing up the device and method of CCPP unit coking coal flow tune valve bite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111102 Termination date: 20170117 |