CN201442954U - Novel blast furnace gas pressure relief valve group and noise-and-vibration-reduction complete set device - Google Patents
Novel blast furnace gas pressure relief valve group and noise-and-vibration-reduction complete set device Download PDFInfo
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- CN201442954U CN201442954U CN2009200041858U CN200920004185U CN201442954U CN 201442954 U CN201442954 U CN 201442954U CN 2009200041858 U CN2009200041858 U CN 2009200041858U CN 200920004185 U CN200920004185 U CN 200920004185U CN 201442954 U CN201442954 U CN 201442954U
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- throttling
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Abstract
The utility model relates to a novel gas pressure relief valve group for a blast furnace gas purification and recovery system, which comprises a pressure relief main valve arranged between an inlet reducer pipe and an outlet reducer pipe, three to four pressure relief bypass valves, bypass pipes, one to three throttle valves, one to three throttle cylinders, one to five groups of silencing pieces and a cylinder sound-insulation wrapping layer. The utility model has the advantages that valves are rearranged, and the flow combing and throttling measures are taken, so that the noise and vibration of the gas pressure relief valve group are reduced, and the noise can be reduced to less than 90dBA from 120dBA without a soundproof cover.
Description
Technical field
This patent relates to a kind of novel gas reducing valve group, and this moulded coal gas reducing valve group adopts lower noise, low VIBRATION DESIGN, is used for blast furnace gas purification and recovery system.
Background technology
The blast furnace coal gas pressure reducing valve group is the visual plant in blast furnace gas purification and the recovery system, usually to pass through the blast furnace coal gas pressure reducing valve group through the blast furnace gas that purifies, pressure reduces to 10 to 13Kpa by 0.13 to 0.25Mpa, just can be admitted in the gas tank after gas pressure reduces and store, in order to using.The blast furnace coal gas pressure reducing valve group produces intensive noise and vibration in the step-down process, the other noise of blast furnace coal gas pressure reducing valve group can reach 120～130dBA usually, the severe contamination plant environment, hinder reception and then the influence safety in production of workman to voice signal, also usually cause factory's circle noise to exceed standard, influence the lives of the people.Intensive vibrates not only contaminate environment but also reduces equipment life, even can cause the pipeline cracking that security incident takes place.
My company is the domestic unit that carries out the control of blast furnace coal gas pressure reducing valve group noise and vibration the earliest, since last century the mid-80 we the blast furnace coal gas pressure reducing valve group in the priority project has been carried out noise and vibration improvement. promptly install silencing hood around the blast furnace coal gas pressure reducing valve group additional, install tip cutting movable sheet type dissipative muffler additional in reducing valve group downstream, to the wrapping of insulating against sound of reducing valve group two ends pipeline and suppressor case, install anti-vibration pad additional in reducing valve group and sourdine bottom.It is fine to implement the back noise reduction, but also have some problems: first silencing hood is out of favour, it makes troubles for the maintenance and the replacing of reducing valve group, in case and reducing valve group generation gas leakage, ventilation plant on the silencing hood is difficult to the remaining coal gas emptying in dead angle in the cover, so safety problem occurs.It two is that cost is too high, and single sourdine cost can reach 100 to 2,000,000 yuan, so limited the extensive application of this programme.One of reason that the sourdine price is high is that the inner perforated protection slab must be used thickening plate, and this thickening plate can't be with the processes of automatic punching, can only hand drill, so increased cost.Some colleague attempts adopting and can replace by perforated thin perforation protection slab, and the result all ends in failure, and the perforation protection slab is blown bad, and steel plate and sound-absorbing material are blown to the downstream, cause potential safety hazard.It three is to vibrate slightly to reduce but thoroughly solve.
My company has offered these problems of a plurality of subject studies for many years, has developed the special rectifier grid in 2000 and has solved the perforation protection slab in the sourdine and easily blown bad problem.But want to solve all problems, it is not all right that light is tried every possible means outside the coal gas compression release valve group, so my company then carry out the research of blast furnace coal gas pressure reducing valve group itself, novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes have finally been designed, under the not excessive situation of investment, solve the noise and vibration problem, and eliminated silencing hood.
The utility model content
Existing coal gas compression release valve group is to be composed in parallel by 4 to 5 butterfly valves, and the butterfly valve two ends have adapter, with flat board or the ellipsoid template that has the diameter circular hole identical with taking over diameter adapter is coupled together.Because air communication is out-of-date in order to realize significantly step-down, butterfly valve opening is all very little, even closes, and must produce the intensive turbulence noise this moment in butterfly valve is opened place and one section space, downstream, and the turbulent flow that produces of each butterfly valve phenomenon that is overlapping, this makes noise advance an increasing.Because the decline significantly of pressure and the effect of gas shock, valve plate, valve coverboard and pipe arrangement all will be subjected to the effect of exciting force, when the frequency of the natural frequency of system and exciting force is identical, will produce resonance, valve and pipe arrangement will produce judder this moment.It is little that butterfly valve is opened the part area, and the flow velocity height because it is generally very near apart from butterfly valve to be installed in the anechoic sheet in coal gas compression release valve group downstream, impacts anechoic sheet from the air-flow of butterfly valve with the jet state, is easy to cause the perforation plate on the anechoic sheet to damage.
Technical problem to be solved in the utility model just is to provide a kind of novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes, under the prerequisite without silencing hood, solves noise, vibration and anechoic sheet and is easily blown bad problem.
For achieving the above object, the utility model is taked following technical scheme:
The utility model blast furnace coal gas pressure reducing valve group and noise reduction vibration damping complexes comprise the decompression main valve that is installed in the reducer, are installed in decompression by-pass valve, throttling valve and honeycomb screen in the folding pipe.
Described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes is characterized in that regulating the decompression main valve and the decompression by-pass valve is realized decompression, and decompression main valve two ends dress reducer is provided with 3～4 decompression by-pass valve on every side.
Described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes is characterized in that each decompression by-pass valve two ends and folding pipe coupling, and the folding pipe links to each other with decompression main valve reducer.
Described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes is characterized in that being contained in the throttling valve in the coaxial downstream of decompression main valve, and throttling valve is 1～3 valve.
Described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes is characterized in that being contained in the honeycomb screen in the coaxial downstream of throttling valve, and described honeycomb screen is made up of 1～3 throttling tube.Described throttling tube adds the shape of the bottom of a pan shape end socket, even perforate on it for Rotary-table.
Coaxial 1～3 group of dismountable anechoic sheet that routine is installed in the honeycomb screen downstream.
The wrapping of on valve, pipeline and suppressor case, insulating against sound routinely.
Effect of the present utility model is following several respects:
At first change the reducing valve group into mode that main valve adds by-pass valve, make gas channel have the reasonableness of acoustic connection.It two is to have increased throttling valve and honeycomb screen, and each throttling tube all has hypotensive effect in each throttling valve and the honeycomb screen, and single-stage buck is become multistage step-down, and the step-down at every place reduces significantly, and its turbulence noise must reduce.It three is that honeycomb screen can be decomposed into uniform tiny air-flow to uneven thick jet, itself play the effect that reduces noise, and the maximum impact speed that the rectifying action of honeycomb screen makes the anechoic sheet in downstream suffer reduces significantly, adopts thin perforation protection slab to become possibility like this.It four is that dismountable anechoic sheet is set, and it has the effect that absorbs sound wave, has controlled sound wave and has transmitted downstream with air-flow.It five is that sound insulation wrapping layer is set outside pipeline, suppressor case and valve housing, and the control sound wave is by the propagation of pipeline and apparatus casing.The dividing potential drop effect of throttling valve, honeycomb screen in addition makes the reducing valve pressure drop reduce significantly, thereby has reduced exciting force.The structure formation that the decompression main valve that the utility model adopts adds the by-pass valve that reduces pressure helps dredging incoming flow, rather than the original incoming flow that stops, this makes that also exciting force weakens.The synthesis result that reduces exciting force and anti-vibration pad passive vibration isolation is that vibration reduces.
Description of drawings
Below in conjunction with accompanying drawing the utility model is advanced an explanation.
Fig. 1 is the utility model facade view.
Fig. 2 is the sectional view of reflection the utility model chip muffler section structure.
Fig. 3 is the direction view that reflection the utility model throttling valve is arranged.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3.The utility model comprises decompression main valve 3, decompression by-pass valve 1, throttling valve 5, honeycomb screen 6, anechoic sheet 7 and sound insulation wrapping layer 8.
Decompression main valve 3 two ends connect reducer 2, and 3～4 decompression by-pass valve 1 are set around it, 1 liang of termination folding of each decompression by-pass valve pipe 4, and folding pipe 4 links to each other with decompression main valve reducer 2.Decompression main valve 3 and the decompression by-pass valve 1 common reducing valve group of forming, by regulating the valve plate aperture of decompression main valve 3 and decompression by-pass valve 1, the pressure of control blast furnace furnace roof, and with downstream throttling valve and the common step-down of honeycomb screen, make downstream airflow pressure reduce to 10～13Kpa.
Air communication enters throttling valve 5 after crossing decompression main valve 3 and decompression by-pass valve 1, and throttling valve 5 is 1～3 butterfly valve, disposablely adjusts to behind the correct position its valve plate aperture no longer moving.Air-flow then enters honeycomb screen 6, and honeycomb screen 6 is made up of 1～3 throttling tube, and the throttling tube adds the shape of the bottom of a pan shape end socket, even perforate on it for Rotary-table.Each throttling valve and each throttling tube all are the one-level buck configuration, and this just changes the single-stage buck of former reducing valve group into multistage step-down.Air communication overcommutation grid obtain combing, and noise reduces, and become evenly by air-flow behind the honeycomb screen, have protected the anechoic sheet in downstream like this.
Air-flow enters the gas channel between the anechoic sheet 7 at last.Anechoic sheet 7 is made up of 1～5 group of anechoic sheet, in fill out sound-absorbing material, with the perforation plate mask, anechoic sheet is detachable, it is convenient to change.Sound wave is absorbed by sound-absorbing material during by the gas channel between the anechoic sheet, has avoided noise with the air-flow propagates down stream.
All shells are made sound insulation wrapping layer 8, and valve housing energy bag place is bag as far as possible.Sound insulation wrapping layer 8 is made up of sound-absorbing material and high-density facing material.
After adopting the utility model, the other noise of the utility model downstream line is not higher than 85dBA, and decompression main valve (noise highest point) noise is not higher than 90dBA.Vibration problem has not existed.Owing to degradation reason under the cost of manufacture of anechoic sheet, cost of the present utility model is lower than the overall cost of former method mentioned in this article.
Claims (5)
1. novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes, its feature comprise the decompression main valve (3) that is contained in the reducer (2), are contained in decompression by-pass valve (1), throttling valve (5) and honeycomb screen (6) in the folding pipe (4).
2. require described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes according to right 1, it is characterized in that regulating decompression main valve (3) and decompression by-pass valve (1) realizes reducing pressure, decompression main valve (3) two ends dress reducer (2) is provided with 3～4 decompression by-pass valve (1) on every side.
3. require described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes according to right 2, it is characterized in that each decompression by-pass valve (1) two ends is connected with folding pipe (4), folding pipe (4) links to each other with decompression main valve reducer (2).
4. require described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes according to right 1, it is characterized in that being contained in the throttling valve (5) in the coaxial downstream of decompression main valve (3), throttling valve (5) is 1～3 valve.
5. require described novel blast-furnace coal gas compression release valve group and noise reduction vibration damping complexes according to right 1, it is characterized in that being contained in the honeycomb screen (6) in the coaxial downstream of throttling valve (5), described honeycomb screen (6) is made up of 1～3 throttling tube.Described throttling tube adds the shape of the bottom of a pan shape end socket, even perforate on it for Rotary-table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200041858U CN201442954U (en) | 2009-02-06 | 2009-02-06 | Novel blast furnace gas pressure relief valve group and noise-and-vibration-reduction complete set device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200041858U CN201442954U (en) | 2009-02-06 | 2009-02-06 | Novel blast furnace gas pressure relief valve group and noise-and-vibration-reduction complete set device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201442954U true CN201442954U (en) | 2010-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200041858U Expired - Lifetime CN201442954U (en) | 2009-02-06 | 2009-02-06 | Novel blast furnace gas pressure relief valve group and noise-and-vibration-reduction complete set device |
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| Country | Link |
|---|---|
| CN (1) | CN201442954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821725A (en) * | 2014-03-03 | 2014-05-28 | 西南科技大学 | Noise collecting system device for sewage plant blower |
| CN104017925A (en) * | 2014-04-24 | 2014-09-03 | 中冶建筑研究总院有限公司 | Automatic adjustable silencing damping screen |
-
2009
- 2009-02-06 CN CN2009200041858U patent/CN201442954U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821725A (en) * | 2014-03-03 | 2014-05-28 | 西南科技大学 | Noise collecting system device for sewage plant blower |
| CN103821725B (en) * | 2014-03-03 | 2016-04-06 | 西南科技大学 | A kind of Blower in WTP noise collection system and device |
| CN104017925A (en) * | 2014-04-24 | 2014-09-03 | 中冶建筑研究总院有限公司 | Automatic adjustable silencing damping screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MCC ENGINEERING TECHNOLOGY CO., LTD. Effective date: 20130419 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130419 Address after: 100088 Beijing city Haidian District Xitucheng Road No. 33 Patentee after: China Jingye Engineering Technology Co., Ltd. Patentee after: MCC Engineering Technology Co., Ltd. Address before: 100088 Beijing city Haidian District Xitucheng Road No. 33 Patentee before: China Jingye Engineering Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100428 |
|
| CX01 | Expiry of patent term |