CN202530104U - Blast furnace gas pressure reducing valve group - Google Patents
Blast furnace gas pressure reducing valve group Download PDFInfo
- Publication number
- CN202530104U CN202530104U CN2012200731446U CN201220073144U CN202530104U CN 202530104 U CN202530104 U CN 202530104U CN 2012200731446 U CN2012200731446 U CN 2012200731446U CN 201220073144 U CN201220073144 U CN 201220073144U CN 202530104 U CN202530104 U CN 202530104U
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- China
- Prior art keywords
- blast furnace
- reducing valve
- valve group
- gas pressure
- pressure reducing
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- Expired - Fee Related
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Abstract
The utility model discloses a blast furnace gas pressure reducing valve group comprising at least two butterfly valves, wherein the inlet ends and the outlet ends of the butterfly valves are respectively connected with a venturi, and the venturi connected with the outlet ends of the butterfly valves is connected with a bus tube. The blast furnace gas pressure reducing valve group disclosed by the utility model can uniformly distribute air flow so as to uniformly decelerate pressure-reduced high speed air flow, weaken the vibration of the butterfly valves and a pipeline, reduce the noise during the pressure-reducing process and guarantee the long-time safe stable operation of the blast furnace gas reducing valve group.
Description
Technical field
The utility model relates to the ferrous metallurgy field, relates in particular to a kind of blast furnace coal gas pressure reducing valve group.
Background technology
The reducing valve group is mainly used in the blast furnace gas dry dusting system in the ferrous metallurgy process; When blast-furnace top gas recovery turbine generator can't use; The reducing valve group can play the effect of regulating blast furnace gas pressure; Traditional reducing valve group is made up of four butterfly valves, and the convergent divergent channel behind the butterfly valve is all very short, is short type structure.
The pressure that blast furnace gas produces is that the folding degree through butterfly valve carries out regulating and controlling; Because the pressure reduction before and after the butterfly valve is very big; Cause gas velocity in the subrange in butterfly valve exit all near the velocity of sound, not only can produce jet noise, also can produce intensive shock wave noise simultaneously.Pressure reduction is big more, and gas velocity is just big more, and noise is also just big more.
After blast furnace gas passes through butterfly valve, suddenly the multiply air-flow is merged together, increased the disturbance of air-flow, can produce bigger turbulent flow noise.Because the coal gas through dry-dedusting system is dry gas, there is not the lubrication of water molecules, what carry out between the air-flow is metal to-metal contact, has aggravated generation of noise.
Traditional reducing valve group not only produces noise when work, also produce high vibration, and it is loosening that secular high vibration will cause the reducing valve group to be connected with the flange of pipeline, can cause breaking of pipe welding seam when serious, and the danger of gas leak takes place.
The utility model content
The technical problem that the utility model will solve provides a kind of blast furnace coal gas pressure reducing valve group of simple in structure, safe, reliable, noise reduction.
In order to solve the problems of the technologies described above, the utility model provides a kind of blast furnace coal gas pressure reducing valve group, comprises at least two butterfly valves, and the inlet end of said butterfly valve is connected with Venturi meter respectively with exit end, and the said Venturi meter that is connected with the butterfly valve exit end is connected with collecting pipe.
Further, said butterfly valve is two, and said collecting pipe is the pants pipe.
Further, said pants pipe is connected with sourdine.
Further, the Venturi meter that is connected with the butterfly valve inlet end is a collapsible tube, and the Venturi meter that is connected with the butterfly valve exit end is a convergent divergent channel.
Further, the length of said convergent divergent channel is its thin more than 5 times of caliber of end.
The utility model can evenly slow down post-decompression high velocity air the air-flow uniformly distributing, has weakened butterfly valve and Analysis of Pipe Vibrations, has reduced the noise that in the step-down process, produces, has guaranteed that the blast furnace coal gas pressure reducing valve group leader phase safely and steadily runs.
Description of drawings
Fig. 1 is the utility model blast furnace coal gas pressure reducing valve group structural representation.
Among the figure: 1. butterfly valve, 2. collapsible tube, 3. convergent divergent channel, 4. pants pipe, 5. sourdine.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further so that those skilled in the art can better understand the utility model and implementing, but the embodiment that lifts not conduct to qualification of the present invention.
As shown in Figure 1, the utility model blast furnace coal gas pressure reducing valve group comprises at least two butterfly valves 1; Originally be in the instance, said butterfly valve 1 is two, and the inlet end of said butterfly valve 1 is connected with Venturi meter respectively with exit end; The Venturi meter that is connected with the butterfly valve inlet end is a collapsible tube 2, and the Venturi meter that is connected with the butterfly valve exit end is a convergent divergent channel 3, and said convergent divergent channel 3 is connected with pants pipe 4; Said pants pipe 4 is connected with sourdine 5, and said pants pipe 4 is a Y tube.
After blast furnace gas gets into the blast furnace coal gas pressure reducing valve group through inlet; Be divided into two strands of air-flows uniformly and get into collapsible tube 2 respectively; Reduce the pressure of blast furnace gas through the folding degree of regulating butterfly valve 1, post-decompression blast furnace gas gets into convergent divergent channel 3, and the length of said convergent divergent channel 3 be that it carefully holds more than 5 times of caliber; Blast furnace gas slows down in the process of flowing in convergent divergent channel 3 uniformly; Two convergent divergent channels 3 all are connected with pants pipe 4, and therefore two strands of blast furnace gas air-flows can evenly converge in pants pipe 4 slowly, have weakened noise and generation of vibration; Played noise reduction, reduced the effect of pipe vibration, last blast furnace gas directly gets into the sound dampers 5 that are attached thereto through pants pipe 4.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and the protection domain of the utility model is not limited thereto.Being equal to that the technician in present technique field is done on the utility model basis substitutes or conversion, all within the protection domain of the utility model.The protection domain of the utility model is as the criterion with claims.
Claims (5)
1. a blast furnace coal gas pressure reducing valve group is characterized in that, comprises at least two butterfly valves, and the inlet end of said butterfly valve is connected with Venturi meter respectively with exit end, and the said Venturi meter that is connected with the butterfly valve exit end is connected with collecting pipe.
2. a kind of blast furnace coal gas pressure reducing valve group according to claim 1 is characterized in that said butterfly valve is two, and said collecting pipe is the pants pipe.
3. a kind of blast furnace coal gas pressure reducing valve group according to claim 2 is characterized in that said pants pipe is connected with sourdine.
4. a kind of blast furnace coal gas pressure reducing valve group according to claim 1 is characterized in that the Venturi meter that is connected with the butterfly valve inlet end is a collapsible tube, and the Venturi meter that is connected with the butterfly valve exit end is a convergent divergent channel.
5. a kind of blast furnace coal gas pressure reducing valve group according to claim 4 is characterized in that, the length of said convergent divergent channel is its thin more than 5 times of caliber of end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200731446U CN202530104U (en) | 2012-03-01 | 2012-03-01 | Blast furnace gas pressure reducing valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200731446U CN202530104U (en) | 2012-03-01 | 2012-03-01 | Blast furnace gas pressure reducing valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202530104U true CN202530104U (en) | 2012-11-14 |
Family
ID=47131300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200731446U Expired - Fee Related CN202530104U (en) | 2012-03-01 | 2012-03-01 | Blast furnace gas pressure reducing valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202530104U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840845A (en) * | 2016-05-25 | 2016-08-10 | 中冶南方工程技术有限公司 | Butterfly valve and pressure reducing silencer |
| CN110735989A (en) * | 2019-11-20 | 2020-01-31 | 江苏方天电力技术有限公司 | valve capable of reducing pipeline vibration and use method thereof |
-
2012
- 2012-03-01 CN CN2012200731446U patent/CN202530104U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840845A (en) * | 2016-05-25 | 2016-08-10 | 中冶南方工程技术有限公司 | Butterfly valve and pressure reducing silencer |
| CN105840845B (en) * | 2016-05-25 | 2018-12-07 | 中冶南方工程技术有限公司 | Butterfly valve and decompression silencing means |
| CN110735989A (en) * | 2019-11-20 | 2020-01-31 | 江苏方天电力技术有限公司 | valve capable of reducing pipeline vibration and use method thereof |
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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: 20121114 Termination date: 20210301 |