CN104141605B - The hydraulic test of low noise - Google Patents
The hydraulic test of low noise Download PDFInfo
- Publication number
- CN104141605B CN104141605B CN201410189575.2A CN201410189575A CN104141605B CN 104141605 B CN104141605 B CN 104141605B CN 201410189575 A CN201410189575 A CN 201410189575A CN 104141605 B CN104141605 B CN 104141605B
- Authority
- CN
- China
- Prior art keywords
- wall
- hole
- sound
- hydraulic test
- reflection sound
- 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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Links
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 2
- 238000009423 ventilation Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000005273 aeration Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
- F04B53/002—Noise damping by encapsulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Compressor (AREA)
Abstract
The present invention relates to a kind of hydraulic tests of low noise, with motor pump unit, the motor pump unit by pump and drive the motor unit of the pump at.Here, the motor pump unit is arranged in shell be made of multiple walls, closed.One or more wall in the wall forms closed double-wall frame member, and the inner cavity of the frame is the storage container for hydraulic pressure medium.One or more wall in other walls is configured to sound-proof wall, wherein one or more wall in the wall has the surface of reflection sound at its case inside.Arrange that the hole wall on the surface for completely or partially covering the reflection sound, the hole wall have multiple hole cross sections about with being distributed in its face before the surface of one or more reflection sound in the surface of the reflection sound with a spacing<0.3mm2Through-hole.
Description
Technical field
The present invention relates to a kind of hydraulic tests of low noise, with motor pump unit, the motor pump unit by pump and
Drive the motor unit of the pump at, wherein the motor pump unit is arranged in shell be made of multiple walls, closed, and
And one or more wall in the wall forms closed double-wall frame member, the inner cavity of the frame is to be used for hydraulic pressure medium
Storage container, and one or more wall in other walls is configured to sound-proof wall, and one in the wherein described wall or
The multiple walls of person have the surface of reflection sound at its case inside.
Background technology
The frame of construction double-walled is removed to known U-shaped in the hydraulic test of this low noise.Motor pump unit and necessity
When smaller pump and all generates making an uproar strongly for the other assemblies in cooling cycle, the motor and shell that drive the pump
Sound, the noise section are cut down by the storage container comprising hydraulic pressure medium when it is transmitted outward.The noise
Other abatement by sound-proof wall realization.The sound-proof wall has the foamed material or fibrous material of more trepannings, these materials
It can be due to being filled hydraulic pressure medium from the leakage of storage container.Thus also there is fire hazard.
Invention content
Task of the invention lies in a kind of hydraulic test of the low noise of type mentioned in the beginning is realized, this is avoided
A little defects and realize to by arrange noise that unit in the housing and component generate effectively, inexpensively, few dimension
Repair ground, enduringly and be readily able to supplement equipment carry out sound insulation.
The task according to the present invention be addressed in the following manner, i.e., it is described reflection sound surface in one or
The hole on the surface for completely or partially covering the reflection sound is arranged before the surface of the multiple reflection sound of person with a spacing
Wall, the hole wall there are multiple hole cross sections approximately to be less than 0.3mm with being distributed in its face2Through-hole.Before sound-proof wall
Hole wall can be arranged in a manner of completely or partially covering the sound-proof wall.This hole wall is also referred to as micropore shock absorber
（mikroperforierte Absorber,MPA）.The wall of the reflection sound may not directly coat institute in some cases
MPA is stated, but in order to more preferably operate the wall for being packed into the reflection coated with MPA when necessary.
Here, the hole wall can be made of free film.
The hole wall forms micropore shock absorber, the micropore shock absorber work in relatively wide frequency range and by
This obtains effective noise reduction.Viscous friction of the sound-absorbing based on the air in hole.
Because the sound insulation system can not possibly be filled hydraulic pressure medium, fire hazard is avoided.
Solution according to the present invention is effective, low-cost, repair less, durable and be readily able to mend
It fills standby.The solution all has huge advantage in terms of its economy and its feature of environmental protection.
Sound-proof wall has the advantages that these sound insulation is realized by following manner, i.e., the described sound-proof wall is by in reflection sound
It forms to the outer wall and inner hole wall sandwich-type on surface, wherein the hole wall has multiple hole cross sections about<0.3mm2Through-hole.
The sound insulation further decreased that can lead to the sound to being sent out by hydraulic test, is arranged in one of described wall
There is ventilating joint and be disposed with exhaust joint in one of described wall, wherein the ventilating joint and/or exhaust joint are by band
It is formed with the inner hole wall that a spacing is arranged by the outer wall of the inner surface of reflection sound and relative to the outer wall, wherein the hole wall
About with multiple hole cross sections<0.3mm2Through-hole.
The hole can have different cross sections.It is particularly advantageous that when the hole have gap-shaped cross section or
When the circular cross section of person, can simply it be manufactured.
For circular cross section, the hole preferably has the diameter about between 0.05mm to 0.5mm.
In order to realize that the high efficiency of sound insulation, the hole wall can be in the case of spacing difference between sound source and hole wall
Different spacing is arranged in before the surface of the reflection sound.
In order to realize the pitch area between the surface and hole wall of reflecting sound, improvement sound insulation division, passes through reflection
The cavity that spacing between the surface and hole wall of sound is formed can by the surface and the hole wall of the reflection sound it
Between the dividing wall that extends be divided into multiple chambers.
Here, the chamber is preferably formed as honeycomb.
Another improvement project of sound insulation realized by following manner, i.e. the sky between the surface and hole wall of the reflection sound
One or more the second hole wall being arranged in parallel relative to each other is disposed in chamber, second hole wall has multiple hole cross sections
About<0.3mm2Through-hole.
If the dividing wall is fixedly connected with the wall and/or hole wall, the dividing wall is formed simultaneously for hole wall
Support construction, thus the hole wall be not necessarily to self-supporting, but can be configured to it is very thin, more particularly to being configured to film-form.
The simple fixation of the dividing wall is realized that that is, described dividing wall is by adhesive and the wall by following manner
And/or hole wall is fixedly connected.
The hole wall and/or dividing wall can be made of different, suitable material.The hole wall and/or dividing wall are excellent
Choosing is made of metal or plastics.
Description of the drawings
The embodiment of the present invention is shown in the accompanying drawings and is hereinafter described in detail.Wherein：
Fig. 1 shows the cross section of the hydraulic test of low noise；
Fig. 2 shows the cross sections of the second embodiment for the ventilating joint for being used for the hydraulic test according to Fig. 1；
Fig. 3 shows the perspective exploded view of another embodiment of the wall construction for the hydraulic test according to Fig. 1；
Fig. 4 shows the interception part of the view of the hole wall of the hydraulic test according to Fig. 1；And
Fig. 5 shows the interception part of the side view on the surface of the hole wall and reflection sound according to the hydraulic test of Fig. 1.
Specific implementation mode
Hydraulic test shown in FIG. 1 shows that the storage container 1 of the U-shaped for hydraulic pressure medium, the storage hold
Device is arranged on a substrate 2.The storage container forms three side walls 3,4 and 5 of rectangular frame, and the bottom of the frame is by substrate
2 form.The side wall 3,4 and 5 is configured to double-walled and welds together with the substrate 2.Thus it generates for accommodating hydraulic pressure
The cavity of pressure medium, the cavity additionally have the effect of noise reduction.Towards unshowned 4th side, storage container 1 has
The sound-proof wall of noise reduction.Towards the closing of sound-proof wall 6 upper, that the storage container 1 passes through noise reduction.By the side wall 3-5, it is not shown
Sound-proof wall, substrate 2 and the sound-proof wall 6 form closed shell 25.
It is disposed with motor pump unit 7 in the inside of the shell 25, which has air cooled motor
With the pump 8 driven by the motor 9.The motor 9 is arranged on motor bracket 10, which passes through damper 11
It is fixed on the substrate 2.
In order to give the conveying of the motor pump unit 7 cooling air required for the motor 9 of external aeration, there are logical
Gas connector 12, the ventilating joint are imported into from outside through sound-proof wall 6 in the inside of the shell 25.
As can be clearly seen that in fig. 2, cooling air is aspirated by grid 13 and in the ventilating joint 12
Internal turn and be oriented to the motor 9.
In addition, also arranging exhaust joint 14 in the sound-proof wall 6, heated by motor 9 by the exhaust joint
Air can again be flowed out from the shell 25.
The inner wall and the inner wall of ventilating joint 12 and exhaust joint 14 of the side wall 3,4 and 5 form reflection sound
Surface 15.Hole wall 19,20 and 21 is disposed with spacing 16,17 and 18 before the surface 15 of the reflection sound, as it is in Fig. 4
With 5 in amplification illustrated by.There is the hole wall 19,20 and 21 through-hole 22, the through-hole to have circular cross section and 0.3mm
Diameter.
The spacing 16,17 and 18 can have different sizes.
Air in the shell 25 the shaking for generating due to the sound by being sent out in running motor pump unit 17
It is dynamic to cause, surface 15 and hole wall 19,20 of the air as mass body together with reflection sound in multiple holes 22 being arranged side by side
And the air in the spacing 16,17 and 18 between 21 as spring together according to the type of Helmholtz resonator vibrate and by
This reduces the sound penetrated outward.
As being shown in FIG. 3, the division for being configured to honeycomb 23 can be disposed in the spacing 16-18
Wall, the dividing wall form multiple chambers 24.Hole 22 in hole wall 19 is not shown for simplified diagram.
By adhesive, the honeycomb 23 not only connect with the surface 15 of reflection sound and is also connect with hole wall 19.
Claims (11)
1. the hydraulic test of low noise has motor pump unit（7）, the motor pump unit includes pump（8）With the driving pump
（8）Motor（9）, wherein the motor pump unit（7）It is arranged in shell be made of multiple walls, closed（25）In,
Described in multiple walls in wall（3,4,5,6）Or a wall has the surface of reflection sound at its case inside（15）,
It is characterized in that, on the surface of the reflection sound（15）In one or more reflection sound surface before with a spacing cloth
Set the hole wall on the surface for completely or partially covering the reflection sound（19,20,21）, the hole wall is distributed ground in its face
With multiple hole cross sections<0.3mm2Through-hole（22）, wherein multiple walls in the wall（3,4,5）Or a wall forms envelope
The double-wall frame member closed, the inner cavity of the frame are the storage containers for hydraulic pressure medium（1）, and it is multiple in other walls
Wall or a wall are configured to sound-proof wall（6）, wherein the hole wall（19,20,21）It is spaced at different intervals in the reflection
The surface of sound（15）Before.
2. hydraulic test as described in claim 1, which is characterized in that the sound-proof wall is by the inner surface with reflection sound
It forms to outer wall and inner hole wall sandwich-type, wherein the hole wall has multiple hole cross sections<0.3mm2Through-hole.
3. hydraulic test as described in claim 2, which is characterized in that a wall in the wall（6）In be disposed with ventilation
Connector（12）An and wall in the wall（6）In be disposed with air draft connector（14）, wherein the ventilating joint（12）With/
Or the air draft connector（14）By the inner surface with reflection sound（15）Outer wall and relative to the outer wall with a spacing cloth
Hole wall set, internally positioned（20,21）Composition, wherein the hole wall（20,21）With multiple hole cross sections<0.3mm2It is logical
Hole.
4. hydraulic test as described in claim 3, which is characterized in that the hole（22）With between 0.05mm to 0.5mm
Diameter.
5. pressing hydraulic test any one of Claims 1-4, which is characterized in that the hole（22）With gap-shaped
Cross section or circular cross section.
6. hydraulic test as described in claim 2, which is characterized in that by the surface for reflecting sound（15）With hole wall（19,
20,21）Between spacing formed cavity pass through it is described reflection sound surface（15）With the hole wall（19,20,21）It
Between the dividing wall that extends be divided into multiple chambers（24）.
7. hydraulic test as described in claim 6, which is characterized in that the dividing wall and the wall and/or the hole wall
（19,20,21）It is fixedly connected.
8. hydraulic test as described in claim 7, which is characterized in that the dividing wall by adhesive and the wall and/or
The hole wall（19,20,21）It is fixedly connected.
9. hydraulic test as described in claim 6, which is characterized in that the chamber（24）Form honeycomb（23）.
10. hydraulic test as described in claim 2, which is characterized in that between the surface and hole wall of the reflection sound
One or more the second hole wall being arranged in parallel relative to each other is disposed in cavity, second hole wall has multiple holes transversal
Face<0.3mm2Through-hole.
11. hydraulic test as described in claim 6, which is characterized in that the hole wall（19,20,21）And/or the dividing wall
It is made of metal or plastics.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013208455.2 | 2013-05-08 | ||
| DE201310208455 DE102013208455A1 (en) | 2013-05-08 | 2013-05-08 | Low noise hydraulic power unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104141605A CN104141605A (en) | 2014-11-12 |
| CN104141605B true CN104141605B (en) | 2018-11-13 |
Family
ID=51787526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189575.2A Active CN104141605B (en) | 2013-05-08 | 2014-05-07 | The hydraulic test of low noise |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104141605B (en) |
| DE (1) | DE102013208455A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156160A (en) * | 2018-11-07 | 2020-05-15 | 宁波方太厨具有限公司 | Vibration and noise reduction structure of booster pump |
| US11746636B2 (en) | 2019-10-30 | 2023-09-05 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
| CN214247597U (en) * | 2020-12-11 | 2021-09-21 | 烟台杰瑞石油装备技术有限公司 | Fracturing device |
| US11680474B2 (en) | 2019-06-13 | 2023-06-20 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
| CN112983806A (en) * | 2019-12-17 | 2021-06-18 | 佛山市美的清湖净水设备有限公司 | Booster pump mounting structure and water purification unit |
| MX2022007830A (en) * | 2021-06-21 | 2022-12-22 | Nott Company | Electronic pump and methods of using the same. |
| DE202022104291U1 (en) | 2022-07-28 | 2023-11-02 | Reinz-Dichtungs-Gmbh | Cover for a component of an electric drive system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850093A (en) * | 1987-02-09 | 1989-07-25 | Grumman Aerospace Corporation | Method of making an acoustic attenuating liner |
| JPH09195952A (en) * | 1996-01-24 | 1997-07-29 | Matsushita Electric Works Ltd | Pump device |
| DE10227017A1 (en) * | 2002-06-17 | 2003-12-24 | Bosch Rexroth Ag | Low noise hydraulic unit has inlet passage for supply of air to motor and pump assembly constructed as separate sub-assembly and fitted through cut-out in wall of frame and mounted on another wall |
| EP1413772B1 (en) * | 2002-10-22 | 2005-11-09 | Bosch Rexroth AG | Low noise hydraulic power unit |
| CN2844492Y (en) * | 2005-07-11 | 2006-12-06 | 福建省泉州市力达机械有限公司 | Composite-plated sound absorber of multi-stage compressor |
| CN101033741A (en) * | 2006-03-10 | 2007-09-12 | 中国科学院声学研究所 | Totally-enclosed refrigerant compressor housing having lumen coupled resonance sound absorption structure sandwich |
| DE102009017300A1 (en) * | 2008-09-03 | 2010-03-04 | Robert Bosch Gmbh | Low-noise hydraulic assembly, has motor and pump accommodated in common housing, which is formed as sound-proofing enclosure, and active sound absorption system arranged within sound-proofing enclosure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1408483A4 (en) * | 2001-06-21 | 2008-06-11 | Kobe Steel Ltd | Porous soundproof structural body and method of manufacturing the structural body |
-
2013
- 2013-05-08 DE DE201310208455 patent/DE102013208455A1/en not_active Ceased
-
2014
- 2014-05-07 CN CN201410189575.2A patent/CN104141605B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850093A (en) * | 1987-02-09 | 1989-07-25 | Grumman Aerospace Corporation | Method of making an acoustic attenuating liner |
| JPH09195952A (en) * | 1996-01-24 | 1997-07-29 | Matsushita Electric Works Ltd | Pump device |
| DE10227017A1 (en) * | 2002-06-17 | 2003-12-24 | Bosch Rexroth Ag | Low noise hydraulic unit has inlet passage for supply of air to motor and pump assembly constructed as separate sub-assembly and fitted through cut-out in wall of frame and mounted on another wall |
| EP1413772B1 (en) * | 2002-10-22 | 2005-11-09 | Bosch Rexroth AG | Low noise hydraulic power unit |
| CN2844492Y (en) * | 2005-07-11 | 2006-12-06 | 福建省泉州市力达机械有限公司 | Composite-plated sound absorber of multi-stage compressor |
| CN101033741A (en) * | 2006-03-10 | 2007-09-12 | 中国科学院声学研究所 | Totally-enclosed refrigerant compressor housing having lumen coupled resonance sound absorption structure sandwich |
| DE102009017300A1 (en) * | 2008-09-03 | 2010-03-04 | Robert Bosch Gmbh | Low-noise hydraulic assembly, has motor and pump accommodated in common housing, which is formed as sound-proofing enclosure, and active sound absorption system arranged within sound-proofing enclosure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104141605A (en) | 2014-11-12 |
| DE102013208455A1 (en) | 2014-11-13 |
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