CN2194452Y - Anti-injection-resistance sound-damper - Google Patents
Anti-injection-resistance sound-damper Download PDFInfo
- Publication number
- CN2194452Y CN2194452Y CN 94241832 CN94241832U CN2194452Y CN 2194452 Y CN2194452 Y CN 2194452Y CN 94241832 CN94241832 CN 94241832 CN 94241832 U CN94241832 U CN 94241832U CN 2194452 Y CN2194452 Y CN 2194452Y
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- injection
- millimeters
- assembly
- components
- steel pipe
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- Expired - Fee Related
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Abstract
The utility model relates to an anti-injection-resistance sound damper used for treating strong noisy which is caused by steam of the high and medium pressure discharging to atmosphere, which causes the anti-stop sound damper to dissolve into jetting aspiration theory and makes an improvement for the structure. The utility model is composed of section pressure reducing components, jetting aspiration components, and resonance components, wherein, the section pressure reducing components are composed of 4 to 6 steel tubes which are matched with each other layer by layer, the center of the jetting aspiration components has a cylindrical nozzle, and the resonance components are concentrically matched with a casing by steel tubes with small holes. The utility model is used for height and medium pressure to discharge objects and has better sound-deadening characteristic, and the maximal sound attenuation amount can reach more than 42 decibels.
Description
The utility model is a kind of silencing apparatus that is used to administer height, middle pressure steam to very noisy that airborne release produces, and is mainly used in the discharging of heat power equipment height such as industrial and mining enterprises' boiler, steam turbine, gas turbine, middle matter steam.
The noise that high steam is produced to big vapour discharging, its acoustic pressure generally is higher than the threshold of pain, and pollution range is wide, so harm is bigger.The characteristics of this discharging object are the quite difficult noise elimination effects of realizing ideal of the silencing apparatus of energy height, bandwidth, employing tradition, a single structure.
The purpose of this utility model then is the problem at above-mentioned existence, has designed a kind of anti-injection-resistance silencer, and it dissolves in anti-resistance silencer to spray and aspirates theoretical developing.
The utility model technical solution:
A kind of anti-injection-resistance silencer is characterized in that it is made of joint expansion pressure relief assembly, injection pumping components and RESONANCE ABSORPTION assembly, wherein:
A, joint expand pressure relief assembly and are made up of the steel pipe of 4 to 6 layer overlaps;
The center of b, injection pumping components has a cylindrical spout;
C, RESONANCE ABSORPTION assembly are nested by narrow meshed steel pipe and shell are concentric.
This device structurally has the assembly of three different noise-cancelling theorys, its mechanism of action of brief description.
1, joint expands pressure relief assembly: the noise intensity that a definite discharging object is produced is to increase with the increase of discharging the object flow velocity, in general, its acoustic power level will be directly proportional with 4～8 powers of flow velocity, for this reason, should reduce outlet pressure reduction to greatest extent.Medium is when passing through the throttle orifice of layer overlaps steel pipe, and because of repeatedly throttling, dilating effect, pressure will be reduced to below 15%.The assembly skin is with the porous steel pipe, and the cavity of vapor stream in the porous steel pipe is subjected to resistive effect to prevent the formation of regenerated noise when up.
2, spray pumping components: expand the steam that pressure relief assembly flows out from joint, its temperature does not obviously reduce, so can not adopt general resistive sound absorption structure.The injection pumping components that this device provided has adopted injection vacuum preparation principle.Vapor stream quickens under the differential pressure action before and after nozzle when flowing through nozzle, is formed certain vacuum around the jet.Muffler shell top has 4 of apertures, and from then on cold air enters, and is vapour, gas mixed flow along descending the mixing with the jet expansion jet of device inwall.In vapour, makings point energy exchange processes, the consumption of internal steam work can reach more than 20%, and mixed flow temperature, pressure further reduce; In addition, again because of along the tube wall flow air being a kind of resistive preferably bed course, tool vibration damping, frequency reducing effect, for this reason, the injection structure of simple structure has worked the effect of killing three birds with one stone here.
3, RESONANCE ABSORPTION assembly: it is nested by narrow meshed steel pipe and shell are concentric, fills with the pottery short tube in the interlayer and forms.Its sound absorbing mechanism is: fluid is when the antipriming pipe center-aisle, noise will be by RESONANCE ABSORPTION, but only when the most appropriate thickness of interlayer, acoustic absorptivity is only maximum, best thickness of interlayer is relevant with noise frequency again, and frequency of sound wave is difficult to determine because of changes in flow rate herein.Irregularly shaped bed course in this assembly interlayer has formed the air layer of different-thickness in fact, and the filler in the interlayer has promoted the multi-angle refraction of sound wave again and absorbed with being effective simultaneously.
Advantage of the present utility model:
Can reduce noise more than 42 decibels, again because of it has more positive effect to the harmful middle and high frequency sound level of people's ear, this has just more effectively controlled loudness level (side's value).The silencer of determining structure under the situation to the variation of design maximum value, is not influenced above-mentioned noise elimination effect from zero in discharge capacity.
Fig. 1 is the utility model anti-injection-resistance silencer schematic diagram.
Below in conjunction with accompanying drawing the utility model is further described:
The utility model is assemblied by concentric tubes 1, nozzle 2, antipriming pipe 3, netted supporting plate 4, packing layer 5 and housing 6.Described concentric tubes has 4 to 6, and its end interlaces by upper and lower, holes 4 to 36, and the total cross section in hole evenly increases from the inside to the outside, when throttling at the end, the steam specific volume is 1.2 meters
3/ kilogram is determined throttle diameter with this principle.Skin is the porous steel pipe, 3 millimeters of aperture φ, and pitch-row is 15 millimeters.The sleeve pipe upper space forms steam chest, and nozzle is made by steel pipe, and its internal diameter and length are respectively 1.2 and 0.7 times of muffler inlet bore.Have 4 of the air inlet ports of 10～24 millimeters of φ under the rain cover of housing top, antipriming pipe tube wall hole diameter is selected 3～7 millimeters of φ for use, pitch-row is 1.7 times of diameters, is 2～4cm with 15～25 millimeters of external diameter φ, thick 2～4 millimeters, long 15～25 millimeters pottery short tube or the volume of porous in pipe and the shell interlayer
2More than mesoporous metal slag particle fill.Antipriming pipe is supported that by the netted supporting plate that is fixed between housing and the nozzle this device is promptly assembled with one heart by said elements.
Claims (4)
1, a kind of anti-injection-resistance silencer is characterized in that it is made of joint expansion pressure relief assembly, injection pumping components and RESONANCE ABSORPTION assembly, wherein:
A, joint expand pressure relief assembly and are made up of the steel pipe of 4 to 6 layer overlaps;
The center of b, injection pumping components has a cylindrical spout;
C, RESONANCE ABSORPTION assembly are nested by narrow meshed steel pipe and shell are concentric.
2, anti-injection-resistance silencer according to claim 1, it is characterized in that tube end is opened 4 to 36 of throttle orifices in the joint expansion pressure relief assembly, the upper and lower arrangement that interlaces of its throttle orifice from the inside to the outside of each sleeve pipe, and total sectional area evenly increases, the assembly skin is with the porous steel pipe, tube wall bores φ 3 apertures, and pitch-row is 15 millimeters.
3, anti-injection-resistance silencer according to claim 1 is characterized in that spraying nozzle inside diameter and length in the pumping components and is respectively 1.2 and 0.7 times of muffler inlet bore, has 4 of the air inlet ports of 10～24 millimeters of φ under the rain cover of housing top.
4, anti-injection-resistance silencer according to claim 1, it is characterized in that antipriming pipe tube wall hole diameter is selected 3～7 millimeters of φ for use in the RESONANCE ABSORPTION assembly, pitch-row is 1.7 times of diameters, pipe is interior with 15～25 millimeters of external diameter φ with the shell interlayer, thick 2～4 millimeters, long 15～25 millimeters the pottery short tube or the volume of porous are 2～4cm
3More than mesoporous metal slag particle fill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241832 CN2194452Y (en) | 1994-05-10 | 1994-05-10 | Anti-injection-resistance sound-damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94241832 CN2194452Y (en) | 1994-05-10 | 1994-05-10 | Anti-injection-resistance sound-damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2194452Y true CN2194452Y (en) | 1995-04-12 |
Family
ID=33848525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94241832 Expired - Fee Related CN2194452Y (en) | 1994-05-10 | 1994-05-10 | Anti-injection-resistance sound-damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2194452Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422109A (en) * | 2013-08-26 | 2015-03-18 | 广东美的暖通设备有限公司 | Silencer for air conditioner and air conditioner with same |
| CN107167010A (en) * | 2017-04-28 | 2017-09-15 | 山东大学 | A kind of loop circuit heat pipe |
| CN107167009A (en) * | 2017-04-28 | 2017-09-15 | 山东大学 | The annular and separation device loop circuit heat pipe of hydraulic diameter change |
-
1994
- 1994-05-10 CN CN 94241832 patent/CN2194452Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422109A (en) * | 2013-08-26 | 2015-03-18 | 广东美的暖通设备有限公司 | Silencer for air conditioner and air conditioner with same |
| CN107167010A (en) * | 2017-04-28 | 2017-09-15 | 山东大学 | A kind of loop circuit heat pipe |
| CN107167009A (en) * | 2017-04-28 | 2017-09-15 | 山东大学 | The annular and separation device loop circuit heat pipe of hydraulic diameter change |
| CN107167009B (en) * | 2017-04-28 | 2019-03-08 | 山东大学 | The annular and separation device loop circuit heat pipe of hydraulic diameter variation |
| CN107167010B (en) * | 2017-04-28 | 2019-03-08 | 山东大学 | A kind of loop circuit heat pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |