CN109386469A - Sound attenuator is used in a kind of test of pump noise - Google Patents
Sound attenuator is used in a kind of test of pump noise Download PDFInfo
- Publication number
- CN109386469A CN109386469A CN201710683804.XA CN201710683804A CN109386469A CN 109386469 A CN109386469 A CN 109386469A CN 201710683804 A CN201710683804 A CN 201710683804A CN 109386469 A CN109386469 A CN 109386469A
- Authority
- CN
- China
- Prior art keywords
- outer case
- pump
- sound
- noise
- soundproof
- Prior art date
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/065—Noise dampening volumes, e.g. muffler chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/063—Sound absorbing materials
Abstract
The invention discloses a kind of pump noise test sound attenuators, internal box, general import pipeline, liquid outlet conduit, first gas outlet including outer case, inside outer case, second gas outlet, the general import pipeline sequentially passes through the outer case, internal box and silencer, the liquid outlet conduit sequentially passes through the internal box, outer case, the internal box is exported equipped with the first gas, and the outer case is exported equipped with the second gas.Pump noise test sound attenuator of the invention, noise test suitable for water pump, oil pump, air pump, noise caused by fluid substantially reduces under the action of sound attenuator in entire test process, so that the background noise of pump noise test greatly reduces, so that the noise testing of feed pump, air pump, oil pump provides an ideal sound field.
Description
Technical field
The present invention relates to water pump, oil pump, air pump noise test technical fields, and in particular to a kind of pump test sound attenuator.
Background technique
Water pump noise is also known as pump noise, belongs to the noise in physical property.Water pump noise is that water pump generates at runtime
Irregular, interval, continuous or random noise, unlike man-made noise, traffic noise, water pump noise belongs to
Low-frequency noise, slowly, sound wave is longer for decaying, and diffraction wave energy belongs to difficulty easily around barrier, the water pump noise is crossed
Manage noise.Oil pump noise, air pump noise from feature it is similar to water pump noise.
In the prior art, water pump, oil pump, air pump are in noise testing because can not rule out the stream of water, oil, gas in external pipe
Dynamic noise, and the actual noise of water pump, oil pump, air pump when working operating cannot be measured.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of pump noise test sound attenuators, it can solve existing skill
The problem of water pump, air pump, the oil pump background noise in noise testing are high in art, are unable to the actual noise of test job operating.
To solve the above-mentioned problems, the invention adopts the following technical scheme:
The present invention provides a kind of pump noise test sound attenuator, internal box, general import including outer case, inside outer case
Pipeline, liquid outlet conduit, first gas outlet, second gas outlet, the general import pipeline sequentially pass through the outer case,
Internal box and silencer, the liquid outlet conduit sequentially pass through the internal box, outer case, and the internal box is equipped with described
First gas outlet, the outer case are exported equipped with the second gas.
Preferred technical solution, the outer case include soundproof box and the sound insulation upper cover set on soundproof box upper end, institute
State soundproof box and combined by a plurality of soundproof walls and formed, the soundproof wall include the first metal plate set gradually from the inside to the outside,
Silencing cotton, soundproof plate, noise deadener, sound-proof material and the second metal plate.
Preferred technical solution, the sound insulation upper cover are hollow structure, and upper cover shell is welded using heavy steel plate, outside
Silencing cotton, soundproof plate, noise deadener and sound-proof material have been sequentially filled inside shell from the inside to the outside.
Preferred technical solution, joint face between the soundproof box and the sound insulation upper cover are step, it is described every
Elastic sealing gasket is equipped between sound box bodies and the sound insulation upper cover.
Preferred technical solution, the silencing cotton are made using centrifugally glass-wool, and the soundproof plate is fine using polyester
Dimension is made, and the noise deadener is coated on the surface of soundproof plate, and the sound-proof material is made using centrifugally glass-wool.
Preferred technical solution is equipped with sound insulation cushion blocking between the bottom surface of the outer case, the outer case and internal box,
The sound insulation resilient cushion is made using polyethylene, and layer density is big thereon, and middle layer density is small.
Preferred technical solution, the first gas outlet are set to the upper end of the internal box, the first gas outlet
Top be equipped with the first blast fence.
Preferred technical solution, the second gas outlet are set to one of the outer case far from the general import pipeline
Side.
Preferred technical solution, the outside of the second gas outlet are equipped with the second blast fence, the second air-flow gear
Plate is set in side box body, and the side box body connects the outer case, and the side box body is equipped with far from the side of the outer case
Third gas outlet.
Preferred technical solution, the general import pipeline and the outer case junction are equipped with the first seal closure, the liquid
The second seal closure is equipped between body outlet conduit and the outer case.
Pump noise test of the invention was entirely tested with sound attenuator suitable for the noise test of water pump, oil pump, air pump
Noise caused by fluid substantially reduces under the action of sound attenuator in journey, so that the background noise of pump noise test subtracts significantly
It is small, so that the noise testing of feed pump, air pump, oil pump provides an ideal sound field.
Detailed description of the invention
Invention is further described in detail with specific embodiment with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram that sound attenuator is used in pump noise of the present invention test；
Fig. 2 is the structural schematic diagram of soundproof wall in pump noise of the present invention test sound attenuator；
Fig. 3 is the structural schematic diagram of sound insulation upper cover in pump noise of the present invention test sound attenuator.
Wherein, appended drawing reference is described as follows: outer case 1, internal box 2, silencer 3, general import pipeline 4, liquid discharge
Mouth pipeline 5, first gas outlet 6, second gas outlet 7, sound insulation cushion blocking 8, side box body 9, third gas outlet 10, first are close
Sealing cover 11, the second seal closure 12, the second blast fence 13, soundproof box 14, sound insulation upper cover 15, elastic sealing gasket 16, soundproof wall
17, silencing cotton 18, soundproof plate 19, noise deadener 20, sound-proof material 21, the first metal plate 22, the second metal plate 23, sound insulation upper cover
24, the first on-off valve 25, the first blast fence 26, the second on-off valve 27.
Specific embodiment
As shown in Figure 1, a kind of pump noise test sound attenuator, including outer case 1, internal box 2, silencer 3, internal box 2
Inside outer case 1, silencer 3 is set to inside internal box 2, and outer case 1 and internal box 2 are rectangular parallelepiped structure, outer case 1
4 angle points of bottom be equipped with sound insulation cushion blocking 8, be equipped between 4 angle points and outer case 1 of the bottom of internal box 2 every
Sound cushion blocking 8, sound insulation cushion blocking 8 are made using polyethylene, and layer density is big thereon, and middle layer density is small.Due to every
The density of 8 upper, middle and lower of sound cushion blocking layer is different, so that the sound transmission channel inside sound insulation cushion blocking 8 becomes complicated, sound
Transmission path it is elongated, play the role of sound insulation vibration damping, the vibration from bottom surface can be obstructed and made an uproar with 2 internal flow of internal box
The propagation of sound.Outer case 1 includes soundproof box 14 and sound insulation upper cover 15, and soundproof box 14 is formed by 5 combinations of soundproof wall 17, every
Joint face between sound box bodies 14 and sound insulation upper cover 15 is step, and it is close that elasticity is equipped between soundproof box 14 and sound insulation upper cover 15
Packing 16.It ensure that and be closely bonded between soundproof box 14 and sound insulation upper cover 15, avoid noise from gap leakage.
As shown in Fig. 2, wall soundproof wall 17 includes the first metal plate 22, the silencing cotton 18, sound insulation set gradually from the inside to the outside
Plate 19, noise deadener 20, sound-proof material 21 and the second metal plate 23.As shown in figure 3, sound insulation upper cover 15 is hollow structure, outside upper cover
Shell 24 is welded using heavy steel plate, be sequentially filled from the inside to the outside inside upper cover shell 24 silencing cotton 18, soundproof plate 19, every
Sound coating 20 and sound-proof material 21.Wherein, silencing cotton 18 is made using centrifugally glass-wool, and soundproof plate 19 uses polyester fiber system
It forms, noise deadener 20 is coated on the surface of soundproof plate 19, and sound-proof material 21 is made using centrifugally glass-wool.
As shown in Figure 1, be equipped with general import pipeline 4 through outer case 1, internal box 2, silencer 3, general import pipeline 4 and outer
The outer wall junction of cabinet 1 is equipped with the first seal closure 11, and the input end of general import pipeline 4 is equipped with the first on-off valve 25；Through interior
Cabinet 2, outer case 1 are equipped with liquid outlet conduit 5, and liquid outlet conduit 5 and the outer wall junction of outer case 1 are sealed equipped with second
The outlet end of cover 12, liquid outlet conduit 5 is equipped with the second on-off valve 27.The upper surface of internal box 2 is equipped with first gas outlet 6,
The top of first gas outlet 6 is equipped with the first blast fence 26, and the first blast fence 26 is slow by the air-flow inside internal box 2
Guidance reduces the generation of noise into the air between outer case 1 and internal box 2.Preferably, during the first blast fence 26 is
Hollow structure, shell are welded using heavy steel plate, and the inside of blast fence shell has been sequentially filled silencing cotton from the inside to the outside
18, soundproof plate 19, noise deadener 20 and sound-proof material 21.Wherein, silencing cotton 18 is made using centrifugally glass-wool, soundproof plate 19
It is made using polyester fiber, noise deadener 20 is coated on the surface of soundproof plate 19, and sound-proof material 21 uses centrifugally glass-wool system
It forms.Outer case 1 is equipped with second gas outlet 7 far from the side of general import pipeline 4, and the outside of second gas outlet 7 is equipped with
Second blast fence 13, the second blast fence 13 are set in side box body 9, and side box body 9 connects outer case 1, and side box body 9 is far from outer
The side of cabinet 1 is equipped with third gas outlet 10.Second blast fence 13 slowly guides the air-flow inside outer case 1 to sky
In gas, the generation of noise is reduced.
The course of work: water pump is similar to the noise reduction principle of oil pump, is illustrated below with water pump: water pump carries out noise testing
When, the output end of water pump is connected into general import pipeline 4, the input terminal of water pump is connected into liquid outlet conduit 5, parallel water pump follows
Ring water enters internal box 2 by general import pipeline 4, and silencer 3 disperses the noise in pipeline, and outer case 1 has obstructed noise
Propagation, enter the input terminal of water pump through liquid outlet conduit 5 into the recirculated water in internal box 2, complete water circulation
Process.
Air pump noise testing, the output end of air pump connect general import pipeline 4, and gas enters internal box by general import pipeline 4
2, silencer 3 disperses the noise in pipeline, and outer case 1 has obstructed sonic propagation of making an uproar, into internal box 2 gas by
One gas vent 6 enters between outer case 1 and internal box 2, enters side box body 9 by second gas outlet 7 later, in the second air-flow
Under the baffle effect of baffle 13, by 10 discharge of third gas outlet.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (9)
1. a kind of pump noise test sound attenuator, which is characterized in that internal box including outer case, inside outer case, total
Inlet pipeline, liquid outlet conduit, first gas outlet, second gas outlet, the general import pipeline sequentially pass through described outer
Cabinet, internal box and silencer, the liquid outlet conduit sequentially pass through the internal box, outer case, set on the internal box
There is the first gas to export, the outer case is exported equipped with the second gas.
2. a kind of pump noise test sound attenuator as described in claim 1, which is characterized in that the outer case includes sound proof box
Body and sound insulation upper cover set on soundproof box upper end, the soundproof box are combined by a plurality of soundproof walls and are formed, the soundproof wall
Including the first metal plate, silencing cotton, soundproof plate, noise deadener, sound-proof material and the second metal plate set gradually from the inside to the outside.
3. a kind of pump noise test sound attenuator as claimed in claim 2, which is characterized in that the soundproof box and it is described every
Joint face between sound upper cover is step, and elastic sealing gasket is equipped between the soundproof box and the sound insulation upper cover.
4. a kind of pump noise test sound attenuator as claimed in claim 2, which is characterized in that the silencing cotton is using centrifugation glass
Glass cotton is made, and the soundproof plate is made using polyester fiber, and the noise deadener is coated on the surface of soundproof plate, institute
Sound-proof material is stated to be made using centrifugally glass-wool.
5. a kind of pump noise test sound attenuator as described in claim 1, which is characterized in that the bottom surface of the outer case, institute
It states and is equipped with sound insulation cushion blocking between outer case and internal box, the sound insulation resilient cushion is made using polyethylene, thereon following table
Layer density is big, and middle layer density is small.
6. a kind of pump noise test sound attenuator as described in claim 1, which is characterized in that the first gas outlet is set to
The top of the upper end of the internal box, the first gas outlet is equipped with the first blast fence.
7. a kind of pump noise test sound attenuator as described in claim 1, which is characterized in that the second gas outlet is set to
Side of the outer case far from the general import pipeline.
8. a kind of pump noise test sound attenuator as claimed in claim 7, which is characterized in that outside the second gas outlet
Side is equipped with the second blast fence, and second blast fence is set in side box body, and the side box body connects the outer case, institute
Side of the side box body far from the outer case is stated to export equipped with third gas.
9. a kind of pump noise test sound attenuator as described in claim 1, which is characterized in that the general import pipeline with it is described
Outer case junction is equipped with the first seal closure, and the second seal closure is equipped between the liquid outlet conduit and the outer case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683804.XA CN109386469A (en) | 2017-08-11 | 2017-08-11 | Sound attenuator is used in a kind of test of pump noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683804.XA CN109386469A (en) | 2017-08-11 | 2017-08-11 | Sound attenuator is used in a kind of test of pump noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109386469A true CN109386469A (en) | 2019-02-26 |
Family
ID=65414550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710683804.XA Pending CN109386469A (en) | 2017-08-11 | 2017-08-11 | Sound attenuator is used in a kind of test of pump noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386469A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145114A (en) * | 2019-06-03 | 2019-08-20 | 恒强(天津)环保科技有限公司 | A kind of aluminum alloy pattern plate for building with performance muffler |
| CN112628122A (en) * | 2021-01-27 | 2021-04-09 | 廖延娟 | Air compressor for engineering mine and cooling and noise reduction method thereof |
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| JPH0712836A (en) * | 1993-06-21 | 1995-01-17 | Honda Motor Co Ltd | Gas rate sensor |
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| CN103511032A (en) * | 2013-08-21 | 2014-01-15 | 湖南吉利汽车部件有限公司 | Exhaust gas purification silencer of car |
| CN103573624A (en) * | 2013-10-31 | 2014-02-12 | 广东美芝制冷设备有限公司 | Rotating compressor and refrigeration cycle device |
| CN203742713U (en) * | 2014-04-22 | 2014-07-30 | 成都恒宁环保工程有限公司 | Double-layer ventilating and noise insulating cover |
| CN203771587U (en) * | 2014-04-06 | 2014-08-13 | 大连华日隆环保科技有限公司 | Noise prevention box of outdoor air exchange device |
| CN204467734U (en) * | 2015-02-11 | 2015-07-15 | 何家豪 | A kind of complex sound insulation pad |
| CN205805728U (en) * | 2016-05-31 | 2016-12-14 | 飞尔特能源(东莞)有限公司 | Integral molding silencing case |
| CN106885621A (en) * | 2017-02-21 | 2017-06-23 | 山东大学 | A kind of centrifugal pump hydrodynamic noise measuring table |
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2017
- 2017-08-11 CN CN201710683804.XA patent/CN109386469A/en active Pending
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| JPH0712836A (en) * | 1993-06-21 | 1995-01-17 | Honda Motor Co Ltd | Gas rate sensor |
| CN2392917Y (en) * | 1999-11-04 | 2000-08-23 | 吴孙盛 | Environment-protection type exhausting-silencing device for internal combustion engine |
| CN2509355Y (en) * | 2001-07-27 | 2002-09-04 | 大晃机械工业株式会社 | Discharge silencer with raffinate recovering function |
| CN2816222Y (en) * | 2005-06-09 | 2006-09-13 | 李小敏 | Wormgear boosted microcirculation frequency-variation silencing, ventilating hearing-ability detection, silencing, mute room |
| CN201180319Y (en) * | 2008-01-17 | 2009-01-14 | 刘增凯 | Floating floor sound insulation pad |
| CN202165328U (en) * | 2011-08-09 | 2012-03-14 | 苏州龙杰特种纤维股份有限公司 | Silencer used for discharging condensate water of centrifugal air compressor set |
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| CN103511032A (en) * | 2013-08-21 | 2014-01-15 | 湖南吉利汽车部件有限公司 | Exhaust gas purification silencer of car |
| CN103573624A (en) * | 2013-10-31 | 2014-02-12 | 广东美芝制冷设备有限公司 | Rotating compressor and refrigeration cycle device |
| CN203771587U (en) * | 2014-04-06 | 2014-08-13 | 大连华日隆环保科技有限公司 | Noise prevention box of outdoor air exchange device |
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| CN204467734U (en) * | 2015-02-11 | 2015-07-15 | 何家豪 | A kind of complex sound insulation pad |
| CN205805728U (en) * | 2016-05-31 | 2016-12-14 | 飞尔特能源(东莞)有限公司 | Integral molding silencing case |
| CN106885621A (en) * | 2017-02-21 | 2017-06-23 | 山东大学 | A kind of centrifugal pump hydrodynamic noise measuring table |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145114A (en) * | 2019-06-03 | 2019-08-20 | 恒强(天津)环保科技有限公司 | A kind of aluminum alloy pattern plate for building with performance muffler |
| CN112628122A (en) * | 2021-01-27 | 2021-04-09 | 廖延娟 | Air compressor for engineering mine and cooling and noise reduction method thereof |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20221018 |