CN103438323B - L-type impact air flow attenuator - Google Patents
L-type impact air flow attenuator Download PDFInfo
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- CN103438323B CN103438323B CN201310390228.1A CN201310390228A CN103438323B CN 103438323 B CN103438323 B CN 103438323B CN 201310390228 A CN201310390228 A CN 201310390228A CN 103438323 B CN103438323 B CN 103438323B
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- air
- outlet pipe
- air flow
- flow buffer
- buffer chamber
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Abstract
The invention discloses an L-type impact air flow attenuator which comprises an air flow buffer cavity. An air inlet pipe and an air outlet pipe are installed on the air flow buffer cavity, wherein the air inlet pipe and the air outlet pipe are communicated with a cavity body inside the air flow buffer cavity, the direction changing position of an evacuation pipeline is communicated with the air outlet pipe through the air inlet pipe on the air flow buffer cavity, the air inlet pipe is perpendicular to the air outlet pipe, and L-type layout is arranged inside the air flow buffer cavity. According to the L-type impact air flow attenuator, the characteristics of impact air flow and the evacuation pipeline are comprehensively considered, the basic principles of an interference type air flow buffer, a perforated plate and a hole plate acoustic filter are fused, and the characteristics of the flow exhaust requirements and of the evacuation pipeline and the small installation site of the attenuator are comprehensively considered. For the evacuation pipeline with pipeline steering at the position of an outlet in a security valve, the L-type impact air flow attenuator achieves the effects of dissipating the impact air flow energy, reducing the pipeline coupling, and ensuring the gas exhaust flow requirements to the greatest extent by arranging the air flow buffer cavity and communicating the direction changing position of the evacuation pipeline by the air inlet pipe and the air outlet pipe of the air flow buffer cavity.
Description
Technical field
The invention belongs to large and medium-sized gas holder field of security guarantee in the industries such as oil, chemical industry, the energy, be specifically related to a kind of L-type impact air flow attenuator.
Background technique
Large and medium-sized high pressure tank has a wide range of applications in industries such as oil, chemical industry, the energy as the pressure vessel and equipment of stored-gas.Blowdown piping is the key safety safeguard of this kind of gas holder, its effect be discharge rapidly automatically open the safety-valve when gas holder internal pressure transfinites after the high pressure draught gone out, to reduce reservoir pressure to safety range.Coupling between the high-voltage high-speed impact air-flow of discharging from automatic control pressure vent and blowdown piping can cause the vibration problem of pipeline, especially pipeline turn to, the place such as reducing, fluid structure interaction can apply strong impulsive load to pipeline, cause pipeline high vibration, line rupture protection valve and Leakage Gas can be caused time serious, cause serious accident.Due to the characteristic of blowdown piping and impact air-flow thereof, existing other type pipeline (as compressor circuit, plunger pump pipeline, petrochemical processing pipeline etc.) vibration problem treatment measures (as buffer, orifice plate, gas attenuator etc.), but these pipelines and measure effectively can not solve the impact shock problem in blowdown piping.Impact air-flow effect is key and the difficult point of administering blowdown piping vibration problem, want to reduce impact air-flow need from the viewpoint of abatement gas shock energy to the coupling of pipeline and slow down air-flow velocity two, take into account the design that new type of airflow attenuator is targetedly carried out in the working condition of blowdown piping and technical requirements simultaneously, could effectively solve blowdown piping vibration problem, thus guarantee blowdown piping safety, eliminate the potential safety hazard in producing.
Summary of the invention
The impact shock problem caused when the object of the invention is to solve blowdown piping exhaust on large and medium-sized high pressure tank, provides a kind of L-type impact air flow attenuator for the outer blowdown piping having pipeline to turn to of gas holder safety valve outlet.
For achieving the above object, the technical solution adopted in the present invention is: comprise air-flow buffer chamber, air-flow buffer chamber is provided with the suction tude and steam outlet pipe that are connected with air-flow buffer chamber internal cavities; Break-in place of blowdown piping is communicated with steam outlet pipe by the suction tude on air-flow buffer chamber; The suction port of suction tude front end is connected with blowdown piping, and the inside in air-flow buffer chamber is stretched into from the side in air-flow buffer chamber in rear end; The air outlet of steam outlet pipe front end is connected with blowdown piping, and the inside in air-flow buffer chamber is stretched into from the side in air-flow buffer chamber in rear end; Suction tude and steam outlet pipe perpendicular, become " L " type to arrange in the inside in air-flow buffer chamber.
Above-mentioned suction tude and steam outlet pipe are metal tube tube wall offering some through holes.
Above-mentioned metal tube is 1Cr18Ni9 Austenitic Stainless Steel perforated tube.
The suction port of above-mentioned suction tude front end is provided with the suction port adpting flange be connected with blowdown piping, the ear end face of suction tude offers suction port orifice plate; The air outlet of steam outlet pipe front end is provided with the air outlet adpting flange be connected with blowdown piping, the ear end face of steam outlet pipe offers air outlet orifice plate.
Through hole in above-mentioned suction tude and the total circulation area of suction port orifice plate are greater than the area of suction port, and the through hole on steam outlet pipe and the total circulation area of air outlet orifice plate are greater than the area of air outlet.
Compared with prior art, the present invention has following beneficial effect:
The present invention considers the characteristic of impact air-flow and blowdown piping comprehensively, interference type air-flow buffer device and porous slab are merged, the basic principle of orifice plate acoustic filter, and consider the feature that blowdown piping extraction flow wants summation device fabricating yard little, for the outer blowdown piping having pipeline to turn to of safety valve outlet, by arranging air-flow buffer chamber, break-in place of blowdown piping is communicated with steam outlet pipe by the suction tude on air-flow buffer chamber, reach dissipation impact air-flow energy to the full extent, reduce pipeline coupling, ensure the effect that extraction flow requires, internal structure advantages of simple of the present invention simultaneously, reduce the cost of production maintenance on the one hand, stop resistance on the other hand excessive, be vented the security hidden trouble freely do not caused.
Further, the present invention by offering through hole in suction tude and steam outlet pipe, and installs orifice plate in rearward end, makes full use of pipeline steering feature and air-flow is cancelled out each other to exhaustion device percussion, greatly reduces the requirement that attenuator supports, is convenient to in-site installation.
Further, the present invention has the advantage of resistance attenuator attenuates Bandwidth, can decay to the impact air-flow of full frequency band.
Further, the present invention has abandoned the resistance element containing the sound-absorbing material easily blown away by impact air-flow, directly uses 1Cr18Ni9 Austenitic Stainless Steel perforated tube as resistance element, improves the working life of attenuator while ensureing weakening effect.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Wherein, 1 is air-flow buffer chamber; 2 is suction port adpting flange; 3 is air outlet orifice plate; 4 is steam outlet pipe; 5 is through hole; 6 is air outlet adpting flange; 7 is suction tude; 8 suction port orifice plates.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
See Fig. 1, the present invention includes air-flow buffer chamber 1, air-flow buffer chamber 1 is provided with the suction tude 7 and steam outlet pipe 4 that are connected with air-flow buffer chamber 1 internal cavities, the length in air-flow buffer chamber 1 is 10 ~ 14 times of suction tude 7 or steam outlet pipe 4 internal diameter, and width is 3 ~ 4 times of suction tude 7 or steam outlet pipe 4 internal diameter; Suction tude 7 and steam outlet pipe 4 are 1Cr18Ni9 Austenitic Stainless Steel perforated tube tube wall offering some through holes 5, and the diameter of through hole 5 is 1/5 ~ 1/4 of suction tude 7 or steam outlet pipe 4 internal diameter; The suction port of suction tude 7 front end is provided with the suction port adpting flange 2 be connected with blowdown piping, the inside in air-flow buffer chamber 1 is stretched in the rear end of suction tude 7 from the side in air-flow buffer chamber 1, and the ear end face of suction tude 7 offers suction port orifice plate 8; The air outlet of steam outlet pipe 4 front end is provided with the air outlet adpting flange 6 be connected with blowdown piping, the inside in air-flow buffer chamber 1 is stretched in the rear end of steam outlet pipe 4 from the end face in air-flow buffer chamber 1, and the ear end face of steam outlet pipe 4 offers air outlet orifice plate 3, the diameter of air inlet orifice plate 8 and orifice plate 3 of giving vent to anger is 1/2 of suction tude 7 or steam outlet pipe 4 internal diameter; Suction tude 7 and steam outlet pipe 4 perpendicular, the internal placement in air-flow buffer chamber 1 is " L " type; Through hole 5 in suction tude 7 and the total circulation area of suction port orifice plate 8 are greater than the area of suction port, and the through hole 5 on steam outlet pipe 4 and the total circulation area of air outlet orifice plate 3 are greater than the area of air outlet.The present invention is installed on pipeline break-in place near safety valve in blowdown piping, is linked in blowdown piping by adpting flange.
Working procedure of the present invention is such:
After entering blowdown piping from the high-voltage high-speed impact air-flow of automatic control pressure vent discharge, enter at the suction port of break-in place from attenuator of the present invention, under the effect of the through hole in suction tude and suction port orifice plate, high-voltage high-speed impact air-flow is cushioned, air-flow after buffering enters in air-flow buffer chamber, be expelled to by the steam outlet pipe that structure is identical with suction tude again in the pipeline of blowdown piping break-in opposite side, effectively ensure that blowdown piping safety, eliminate the potential safety hazard in producing.
Claims (3)
1. a L-type impact air flow attenuator, it is characterized in that: comprise air-flow buffer chamber (1), air-flow buffer chamber (1) is provided with the suction tude (7) and steam outlet pipe (4) that are connected with air-flow buffer chamber (1) internal cavities; Break-in place of blowdown piping is communicated with steam outlet pipe (4) by the suction tude (7) on air-flow buffer chamber (1), and suction tude (7) and steam outlet pipe (4) are for tube wall offering the metal tube of some through holes (5); The suction port of suction tude (7) front end is connected with blowdown piping, and the inside of air-flow buffer chamber (1) is stretched into from the side of air-flow buffer chamber (1) in rear end; The air outlet of steam outlet pipe (4) front end is connected with blowdown piping, and the inside of air-flow buffer chamber (1) is stretched into from the side of air-flow buffer chamber (1) in rear end; The suction port of suction tude (7) front end is provided with the suction port adpting flange (2) be connected with blowdown piping, the ear end face of suction tude (7) offers suction port orifice plate (8); The air outlet of steam outlet pipe (4) front end is provided with the air outlet adpting flange (6) be connected with blowdown piping, the ear end face of steam outlet pipe (4) offers air outlet orifice plate (3); Suction tude (7) and steam outlet pipe (4) perpendicular, air-flow buffer chamber (1) inside become " L " type arrange.
2. L-type impact air flow attenuator according to claim 1, is characterized in that: described metal tube is 1Cr18Ni9 Austenitic Stainless Steel perforated tube.
3. L-type impact air flow attenuator according to claim 1, it is characterized in that: the through hole (5) in described suction tude (7) and the total circulation area of suction port orifice plate (8) are greater than the area of suction port, the through hole (5) on steam outlet pipe (4) and the total circulation area of air outlet orifice plate (3) are greater than the area of air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310390228.1A CN103438323B (en) | 2013-08-30 | 2013-08-30 | L-type impact air flow attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310390228.1A CN103438323B (en) | 2013-08-30 | 2013-08-30 | L-type impact air flow attenuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103438323A CN103438323A (en) | 2013-12-11 |
| CN103438323B true CN103438323B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310390228.1A Expired - Fee Related CN103438323B (en) | 2013-08-30 | 2013-08-30 | L-type impact air flow attenuator |
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| CN (1) | CN103438323B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443909A (en) * | 2015-12-03 | 2016-03-30 | 重庆互通管道技术设备有限公司 | Damping bent pipe |
| CN110762000A (en) * | 2018-07-26 | 2020-02-07 | 广东美的环境科技有限公司 | Enthalpy-increasing pulsation attenuation device, scroll compressor and air conditioning system |
| CN109237306A (en) * | 2018-09-19 | 2019-01-18 | 南京远大环境工程有限公司 | A kind of biogas, natural gas balancer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102290A (en) * | 1985-04-01 | 1986-02-10 | 西安交通大学 | Impulse-eliminator using travelling wave tube |
| CN1278582A (en) * | 1999-06-22 | 2001-01-03 | 简志坚 | Muffler suitable for backpressure regulation |
| CN102032147A (en) * | 2010-11-17 | 2011-04-27 | 常州大学 | Gas pulsation vibration damper |
| CN201865724U (en) * | 2010-11-30 | 2011-06-15 | 郑州三维内燃机净化消声技术有限公司 | Sound damping device for air exhaust of automobile |
| CN102434545A (en) * | 2011-11-30 | 2012-05-02 | 西安交通大学 | Liquid flow pulsation attenuator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101198968B1 (en) * | 2011-03-02 | 2012-11-07 | 주식회사 파나시아 | Exhaust gas denitrifing system having noise-reduction structure |
-
2013
- 2013-08-30 CN CN201310390228.1A patent/CN103438323B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102290A (en) * | 1985-04-01 | 1986-02-10 | 西安交通大学 | Impulse-eliminator using travelling wave tube |
| CN1278582A (en) * | 1999-06-22 | 2001-01-03 | 简志坚 | Muffler suitable for backpressure regulation |
| CN102032147A (en) * | 2010-11-17 | 2011-04-27 | 常州大学 | Gas pulsation vibration damper |
| CN201865724U (en) * | 2010-11-30 | 2011-06-15 | 郑州三维内燃机净化消声技术有限公司 | Sound damping device for air exhaust of automobile |
| CN102434545A (en) * | 2011-11-30 | 2012-05-02 | 西安交通大学 | Liquid flow pulsation attenuator |
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| Publication number | Publication date |
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| CN103438323A (en) | 2013-12-11 |
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Granted publication date: 20150701 Termination date: 20180830 |