CN106532493A - Vibration damping and impact resisting device for electric power equipment - Google Patents
Vibration damping and impact resisting device for electric power equipment Download PDFInfo
- Publication number
- CN106532493A CN106532493A CN201611144848.7A CN201611144848A CN106532493A CN 106532493 A CN106532493 A CN 106532493A CN 201611144848 A CN201611144848 A CN 201611144848A CN 106532493 A CN106532493 A CN 106532493A
- Authority
- CN
- China
- Prior art keywords
- power equipment
- guide rod
- vibration
- ball pivot
- cylinder body
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to a vibration damping and impact resisting device for electric power equipment, which comprises a peripheral noise reduction structure (1), a bottom vibration damping and noise reduction structure (2) and a buffer structure, and is characterized in that the peripheral noise reduction structure (1) comprises a closed cover body (11) formed by sound absorption partition boards in an enclosing manner, an air inlet assembly (12) and a noise reduction door (13) which are arranged at the front side of the closed cover body (11) and a plurality of air exhaust assemblies (14) arranged at the top surface of the closed cover body (11), the bottom vibration damping and noise reduction structure (2) comprises a cylinder body (21), a guide rod (22), a base (23), a spring (24), a shearing force buffer rod (25), a buffer sleeve (26), a spherical hinge (27) and a spherical hinge base (28), and the buffer structure comprises a mounting screw (41), a buffer tube (42) and a buffer tube mounting base (43). The vibration damping and impact resisting device is simple in structure, convenient to install and maintain and good in ventilation and heat dissipation, not only can effectively reduce noise pollutions of the electric power equipment, but also has a certain disaster preventing and impact resisting effect.
Description
Technical field
The invention belongs to noise reduction technology field, more particularly to a kind of vibration shock isolation for power equipment hits dress
Put.
Background technology
Power distribution station, transformer station are important electric power occasions, due to the needs of the continuous expansion and city network transformation in city,
Some power distribution stations, transformer station must be built in shopping centre and residential block.With the enhancing of people's environmental consciousness, high-low pressure cabinet, open
The noise problem for closing cabinet, power equipment etc. has been obtained for the great attention of power department and power equipment manufacturer.Also
Because outside natural disaster also occurs often to the infringement that power equipment brings, the impact failure that such as earthquake is brought to power equipment
It also is intended to effectively be prevented while noise reduction.
Although the noise that most power equipment is produced simultaneously is not belonging to the noise of high-decibel, which produces in most cases
Raw low-frequency noise can produce chronic injury to human body, easily make one irritated, irritability, even lose one's marbles sometimes, attacked for a long time
If disturbing, it is also possible to cause the nervous system disease such as neurasthenia, insomnia.The noise of power equipment is mainly by iron coring vibration coupling
Power equipment shell is closed, makes what power equipment case vibration was produced.The vibration of generation is through the air from around power equipment
And the ground of power equipment bottom is radiated to surrounding, so as to affect the resident for around living.General vibration and noise reducing facility is all
There is some percussion such as antiseismic, but be not also the infringement for being fully able to prevent disaster from impacting, the particularly damage of P wave
Evil.
In prior art, power equipment is arranged at the casing for power equipment is isolated from the outside, by electric power during installation
Equipment is arranged in casing, but power equipment is set directly in casing in prior art, due to body structure simply, because
This, casing cannot adsorb the noise produced when power equipment runs, and when power equipment runs, noise is big, disturb the normal of people to stop
Breath.Also there is the method that polyurethane foam plastics is clogged between power equipment casing and electric equipment in the prior art, it is intended to drop
Low power equipment is to external radiation high frequency noise.But because low and filling the randomness of the density polyurethane foam of filling is brought
Polyurethane foam plastics loosen be not adjacent to power equipment, do not play a part of to reduce high frequency noise well.And this
The foam plasticss for planting lightweight also cannot prevent the percussion of P wave completely.
The content of the invention
The goal of the invention of the present invention is to provide a kind of vibration shock isolation for power equipment and hits device, its simple structure, peace
Fill easy to maintenance, ventilation and heat good, be not only able to effectively reduce power equipment sound pollution, also with certain shock resistance of taking precautions against natural calamities
Effect.
The concrete technical scheme of the present invention is that a kind of vibration shock isolation for power equipment hits device, including peripheral noise reduction knot
Structure, bottom vibration and noise reducing structure and buffer structure, it is characterised in that
Described peripheral denoising structure includes the air intake for surrounding enclosing cover by sound-absorbing partition, being arranged on front side of enclosing cover
Component and noise reduction gate and multiple air draft components of enclosing cover top surface are arranged on, the sound-absorbing partition is composite construction board,
Include perforation galvanized steel plain sheet, glass cotton layer, damping sound insulation felt and galvanized steel plain sheet from inside to outside successively, described enclosing cover will
Power equipment is covered on inside which,
The bottom vibration and noise reducing structure include cylinder body, guide rod, base, spring, shearing buffer bar, cushion collar, ball pivot and
Ball pivot seat, described base are fixedly mounted in ground base, and described ball pivot seat is fixedly mounted on base upper surface, described
The lower end of shearing buffer bar is arranged on ball pivot seat by ball pivot, and described guide rod has the tubulose knot of the flange of ring-type for upper end
Structure, on shearing buffer bar, ball pivot and ball pivot seat, the lower end of guide rod is pressed on base leader casing, in shearing buffer bar and guide rod
Inwall between there is cushion collar, the tubular structure of described cylinder body for upper end closed, cylinder body lower end inner surface have ring-type
Boss, guide rod upper end are stretched in the tubular structure of cylinder body, and on the top of shearing buffer bar, spring is located at cylinder body to described spring housing
Between upper end closed end lower surface and guide rod upper end flange upper surface, there is spring pre compressed magnitude to make guide rod upper end flange lower surface
It is pressed on cylinder body boss upper surface, cylinder body upper end has mounting flange, the lower surface of power equipment is arranged on by screw,
Described buffer structure includes mounting screw, separator tube and separator tube mounting seat, and described buffering pipe mounting seat is
Bathtub construction, buffering pipe mounting seat have four, and four buffering pipe mounting seats are separately mounted to power equipment four with mounting screw
On corresponding four inwalls for closing shroud body in individual side, described separator tube has four, is made up of rubber elastic material, respectively
Closely squeeze between buffering pipe mounting seat and power equipment side.
Further, described air intake assembly includes air intake framework and anechoic sheet, and described air intake framework is arranged on envelope
Close on the installing hole reserved on front side of cover body, independent anechoic sheet is installed in air intake framework.
Further, described air draft component includes the control of axial flow blower, air-discharge silencer and control axial flow blower
Device, the axial flow blower are arranged on the top surface of closed cover body and towards portion in enclosed hood body, and described air-discharge silencer is arranged on
Air outlet on the outside of axial flow blower, described controller is arranged on the outside of closed cover body to be used to control axial flow blower start and stop.
Further, described buffering cover material is natural rubber.
Further, described separator tube is made for chloroprene rubber material.
Further, sand layer is equipped with the basis of the mattess of described bottom vibration and noise reducing structure periphery.
The invention has the beneficial effects as follows 1) power equipment is placed in the enclosed hood body by sound-absorbing partition, compound sound absorption
Dividing plate can effectively absorb the low frequency signal that power equipment vibration is produced, prevent low frequency signal by the air of surrounding outwardly
Radiation;2) air intake assembly and air draft component are provided with closed cover body, air intake, air draft component can not only effectively reduce electricity
The noise of power equipment, while can also ensure that the ventilation and heat performance in enclosed hood body;3) arrange in the bottom of power equipment and subtract
Shake noise-reducing components, simple structure, can effectively reduce the vibration between power equipment and ground using vibroshock, so as to reduce electricity
Power noise of equipment, it is also possible to prevent the low frequency signal of power equipment from ground to ambient radiation, the bottom arrange vibration and noise reducing portion
Level can be converted into vertical impact to impact by part, can effectively mitigate the percussion of P wave;4) in power equipment
Buffer structure is set on shell, not only can effectively suppress high-frequency noise outwardly to radiate, also shock resistance effect well.
Description of the drawings
Fig. 1 is the structural representation that the vibration shock isolation for power equipment of the present invention hits device;
Fig. 2 is the external structure schematic diagram that the vibration shock isolation for power equipment of the present invention hits device;
Fig. 3 is the partial enlarged drawing in Fig. 1.
In figure:1 peripheral denoising structure, 11 enclosing cover, 12 air intake assemblies, 121 air intake frameworks, 122 independent anechoic sheets, 13
Noise reduction gate, 14 air draft components, 141 axial flow blowers, 142 air-discharge silencers, 143 is controller, 2 bottom vibration and noise reducing structures,
21 cylinder bodies, 22 guide rods, 23 bases, 24 springs, 25 shearing buffer bars, 26 cushion collars, 27 ball pivots, 28 ball pivot seats, 3 power equipments,
41 mounting screws, 42 separator tubes, 43 buffering pipe mounting seats.
Specific embodiment
Technical scheme is further described with reference to Figure of description.
As Figure 1-3, a kind of vibration shock isolation for power equipment of the invention hits device, including peripheral denoising structure
1st, bottom vibration and noise reducing structure 2 and buffer structure.
Described peripheral denoising structure 1 includes being surrounded enclosing cover 11, being arranged on front side of enclosing cover 11 by sound-absorbing partition
Air intake assembly 12 and noise reduction gate 13 and be arranged on multiple air draft components 14 of 11 top surface of enclosing cover, the sound-absorbing partition
For composite construction board, include perforation galvanized steel plain sheet, glass cotton layer, damping sound insulation felt and galvanized steel plain sheet, institute from inside to outside successively
The enclosing cover 11 stated covers on power equipment 3 inside which.Described air intake assembly 12 includes air intake framework 121 and anechoic sheet
122, described air intake framework 121 is arranged on the installing hole reserved on front side of enclosing cover 11, is provided with solely in air intake framework 121
Vertical anechoic sheet 122.Described air draft component 14 includes axial flow blower 141, air-discharge silencer 142 and control axial flow blower 141
Controller 143, the axial flow blower 141 are arranged on the top surface of closed cover body 11 and towards portion in enclosed hood body, described air draft
Acoustic filter 142 is arranged on the air outlet on the outside of axial flow blower 141, and described controller 143 is arranged on the outer of closed cover body 11
Side is used to control 141 start and stop of axial flow blower.
The bottom vibration and noise reducing structure 2 includes cylinder body 21, guide rod 22, base 23, spring 24, shearing buffer bar 25, slow
Punching set 26, ball pivot 27 and ball pivot seat 28, described base 23 are fixedly mounted in ground base, and described ball pivot seat 28 fixes peace
23 upper surface of base is mounted in, the lower end of described shearing buffer bar 25 is arranged on ball pivot seat 28 by ball pivot 27, and described leads
Bar 22 has the tubular structure of the flange of ring-type for upper end, and guide rod 22 is enclosed within shearing buffer bar 25, ball pivot 27 and ball pivot seat 28,
The lower end of guide rod 22 is pressed on base 23, has cushion collar 26 between shearing buffer bar 25 and the inwall of guide rod 22, described
Tubular structure of the cylinder body 21 for upper end closed, 21 lower end inner surface of cylinder body have the boss of ring-type, and cylinder body is stretched in 22 upper end of guide rod
In 21 tubular structure, described spring 24 is enclosed within the top of shearing buffer bar 25, and spring 24 is located at 21 upper end closed end of cylinder body
Between 22 upper end flange upper surface of lower surface and guide rod, spring 24 is pressed in 22 upper end flange lower surface of guide rod with pre compressed magnitude
On 21 boss upper surface of cylinder body, 21 upper end of cylinder body has mounting flange, is arranged on the lower surface of power equipment 3 by screw.Institute
26 material of cushion collar stated is natural rubber, and the creep-resistant property of natural rubber is good, can be long-term in the presence of gravity and pressure
Use.
Described buffer structure includes mounting screw 41, separator tube 42 and separator tube mounting seat 43, described separator tube peace
Dress seat 43 is bathtub construction, and buffering pipe mounting seat 43 has four, is pacified four buffering pipe mounting seats 43 respectively with mounting screw 41
It is mounted on corresponding four inwalls for closing shroud body 11 in four sides of power equipment, described separator tube 42 there are four, is rubber
Elastic material is made, and is closely squeezed between buffering pipe mounting seat 43 and power equipment side respectively.Described separator tube 42
Make for chloroprene rubber material.The good toughness of neoprene, the sound generation source that can effectively reduce high frequency radiation noise shake.
When selecting bottom vibration and noise reducing structure 2, the load-bearing of each bottom vibration and noise reducing structure 2 is impartial, and power equipment 3
Distribution of weight is uneven in front and back, will find 3 position of centre of gravity of power equipment during installation accurately, it is ensured that each bottom vibration and noise reducing structure 2 is compressed
Amount is essentially identical.Integrally-built stability to also be ensured in addition, each bottom vibration and noise reducing structure 2 is connected into using channel-section steel little
Unit, can increase stability.The basis for installing bottom vibration and noise reducing structure 2 must be smooth, it is desirable to which bottom vibration and noise reducing structure 2 exists
After installation, each strong point is located at same level height.
Compound sound-absorbing partition can effectively absorb the low frequency signal that the vibration of power equipment 3 is produced, and prevent low frequency signal
Outwardly radiated by the air of surrounding.And air intake assembly 12 and air draft component 14, air intake are provided with closed cover body 11
Component 12 and air draft component 14 can not only effectively reduce the noise of power equipment 3, while can also ensure that closed cover body 11
Interior ventilation and heat performance.
In order to further reduce the noise produced when power equipment 3 runs, around the bottom vibration and noise reducing structure 2
Ground on be equipped with sand layer.Power equipment 3 is first passed around after bottom vibration and noise reducing structure 2 reduces vibration, reduces noise, electricity
The noise that the operation of power equipment 3 is produced can be absorbed sound by sand layer when to ambient radiation.
Embodiments of the invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned enforcement
Example, in the ken that those of ordinary skill in the art possess, can be with the work on the premise of without departing from present inventive concept
Go out various change.
Claims (6)
1. a kind of vibration shock isolation for power equipment hits device, including peripheral denoising structure (1), bottom vibration and noise reducing structure
And buffer structure (2), it is characterised in that
Described peripheral denoising structure (1) includes being surrounded enclosing cover (11), being arranged on before enclosing cover (11) by sound-absorbing partition
The air intake assembly (12) of side and noise reduction gate (13) and multiple air draft components (14) of enclosing cover (11) top surface are arranged on, institute
It is composite construction board to state sound-absorbing partition, includes perforation galvanized steel plain sheet, glass cotton layer, damping sound insulation felt and plating from inside to outside successively
Zinc steel plate, described enclosing cover (11) cover on power equipment (3) inside which,
The bottom vibration and noise reducing structure (2) includes cylinder body (21), guide rod (22), base (23), spring (24), shearing buffer bar
(25), cushion collar (26), ball pivot (27) and ball pivot seat (28), described base (23) is fixedly mounted in ground base, described
Ball pivot seat (28) be fixedly mounted on base (23) upper surface, the lower end of described shearing buffer bar (25) is pacified by ball pivot (27)
It is mounted on ball pivot seat (28), described guide rod (22) has the tubular structure of the flange of ring-type for upper end, guide rod (22) is enclosed within to be cut
On power buffer bar (25), ball pivot (27) and ball pivot seat (28), the lower end of guide rod (22) is pressed on base (23), in shearing buffer bar
(25) there is cushion collar (26), the tubular structure of described cylinder body (21) for upper end closed, cylinder and the inwall of guide rod (22) between
Body (21) lower end inner surface has the boss of ring-type, and guide rod (22) upper end is stretched in the tubular structure of cylinder body (21), described bullet
Spring (24) is enclosed within the top of shearing buffer bar (25), and spring (24) is positioned at cylinder body (21) upper end closed end lower surface and guide rod (22)
Between upper end flange upper surface, it is convex that spring (24) makes guide rod (22) upper end flange lower surface be pressed in cylinder body (21) with pre compressed magnitude
On platform upper surface, cylinder body (21) upper end has mounting flange, is arranged on the lower surface of power equipment (3), the bottom by screw
Portion's vibration and noise reducing structure (2) has 4, is evenly arranged under power equipment (3),
Described buffer structure includes mounting screw (41), separator tube (42) and separator tube mounting seat (43), described separator tube
Mounting seat (43) is bathtub construction, and buffering pipe mounting seat (43) has four, buffers pipe mounting seat by four with mounting screw (41)
(43) it is separately mounted on four inwalls of the corresponding closing shroud body (11) in four sides of power equipment, described separator tube
(42) have four, be made up of rubber elastic material, closely squeeze respectively buffering pipe mounting seat (43) with power equipment side it
Between.
2. a kind of vibration shock isolation for power equipment according to claim 1 hits device, it is characterised in that described enters
Wind component (12) includes air intake framework (121) and anechoic sheet (122), and described air intake framework (121) is installed in enclosing cover
(11), on the installing hole reserved on front side of, independent anechoic sheet (122) is installed in air intake framework (121).
3. a kind of vibration shock isolation for power equipment according to claim 1 hits device, it is characterised in that described row
Controller (143) of the wind component (14) including axial flow blower (141), air-discharge silencer (142) and control axial flow blower (141),
The axial flow blower (141) installed in closed cover body (11) top surface and towards portion in enclosed hood body, described air-discharge silencer
(142) air outlet being arranged on the outside of axial flow blower (141), described controller (143) is installed in closed cover body (11)
Outside is used to control axial flow blower (141) start and stop.
4. a kind of vibration shock isolation for power equipment according to claim 1 hits device, it is characterised in that described is slow
Punching set (26) material is natural rubber.
5. a kind of vibration shock isolation for power equipment according to claim 1 hits device, it is characterised in that described is slow
Washing pipe (42) is made for chloroprene rubber material.
6. a kind of vibration shock isolation for power equipment according to claim 1-5 is arbitrary hits device, and its feature exists
In being equipped with sand layer on the basis of the mattess around described bottom vibration and noise reducing structure (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611144848.7A CN106532493B (en) | 2016-12-13 | 2016-12-13 | A kind of vibration shock isolation for power equipment hits device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611144848.7A CN106532493B (en) | 2016-12-13 | 2016-12-13 | A kind of vibration shock isolation for power equipment hits device |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106532493A true CN106532493A (en) | 2017-03-22 |
CN106532493B CN106532493B (en) | 2018-08-28 |
Family
ID=58343195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611144848.7A Active CN106532493B (en) | 2016-12-13 | 2016-12-13 | A kind of vibration shock isolation for power equipment hits device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106532493B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107042660A (en) * | 2017-03-27 | 2017-08-15 | 江苏中天消防设备有限公司 | A kind of fire-proof plate with decrease of noise functions |
CN107369529A (en) * | 2017-09-18 | 2017-11-21 | 合肥慕智信息技术有限公司 | A kind of transformer installs support base |
CN107681485A (en) * | 2017-10-25 | 2018-02-09 | 高嵩 | A kind of antidetonation switch cubicle |
CN107834401A (en) * | 2017-11-30 | 2018-03-23 | 孙培丽 | A kind of support base of power distribution cabinet in smart city |
CN108448439A (en) * | 2018-04-17 | 2018-08-24 | 湖南城市学院 | Shockproof switch cabinet |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104201584A (en) * | 2014-09-18 | 2014-12-10 | 桐乡市搏腾贸易有限公司 | Improved box type transformer substation |
CN204088949U (en) * | 2014-09-11 | 2015-01-07 | 安徽万华电气科技有限公司 | A kind of distribution box with vibration damping, noise reduction performance |
KR101576028B1 (en) * | 2015-07-31 | 2015-12-09 | 주식회사 삼성파워텍 | vibration isolation switchboard mounted vibration reduction device |
CN106025847A (en) * | 2016-06-08 | 2016-10-12 | 佘峰 | Noise-reduction electrical equipment protection box with high stability |
-
2016
- 2016-12-13 CN CN201611144848.7A patent/CN106532493B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN204088949U (en) * | 2014-09-11 | 2015-01-07 | 安徽万华电气科技有限公司 | A kind of distribution box with vibration damping, noise reduction performance |
CN104201584A (en) * | 2014-09-18 | 2014-12-10 | 桐乡市搏腾贸易有限公司 | Improved box type transformer substation |
KR101576028B1 (en) * | 2015-07-31 | 2015-12-09 | 주식회사 삼성파워텍 | vibration isolation switchboard mounted vibration reduction device |
CN106025847A (en) * | 2016-06-08 | 2016-10-12 | 佘峰 | Noise-reduction electrical equipment protection box with high stability |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107042660A (en) * | 2017-03-27 | 2017-08-15 | 江苏中天消防设备有限公司 | A kind of fire-proof plate with decrease of noise functions |
CN107369529A (en) * | 2017-09-18 | 2017-11-21 | 合肥慕智信息技术有限公司 | A kind of transformer installs support base |
CN107681485A (en) * | 2017-10-25 | 2018-02-09 | 高嵩 | A kind of antidetonation switch cubicle |
CN107834401A (en) * | 2017-11-30 | 2018-03-23 | 孙培丽 | A kind of support base of power distribution cabinet in smart city |
CN108448439A (en) * | 2018-04-17 | 2018-08-24 | 湖南城市学院 | Shockproof switch cabinet |
CN108448439B (en) * | 2018-04-17 | 2019-05-24 | 湖南城市学院 | Shockproof switch cabinet |
Also Published As
Publication number | Publication date |
---|---|
CN106532493B (en) | 2018-08-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106532493A (en) | Vibration damping and impact resisting device for electric power equipment | |
CN207485690U (en) | A kind of FRP AXIAL-FLOW FANNER | |
CN203160760U (en) | Noise abatement machine room | |
CN108667201B (en) | Heat dissipation and noise reduction motor for industrial machine tool | |
CN207111357U (en) | A kind of Aniline Production air compressor machine denoising device | |
CN103267084B (en) | Three-dimensional frame type buoyant raft vibration isolation device | |
CN206259614U (en) | A kind of power equipment noise reduction buffer device | |
CN204590290U (en) | A kind of roots blower machine room noise reduction compages | |
CN205559373U (en) | Shock -resistant pipeline formula silencer | |
CN105840459A (en) | Sound insulation and noise reduction method and device for MVR energy saving vaporization system | |
CN111486133A (en) | Damping device and low-noise fan | |
CN204885870U (en) | Device of making an uproar falls in power equipment damping | |
CN204680532U (en) | A kind of transformer vibration damping denoising device | |
CN204006567U (en) | A kind of electric layer ventilating opening shock-absorbing and noise-eliminating device | |
CN207540115U (en) | A kind of cabinet air conditioner denoising device | |
CN202328561U (en) | Noise reducing structure of outdoor machine of air conditioner | |
CN109945680A (en) | Cooling tower with silencer | |
CN213116707U (en) | Full oilless vortex air compressor sound insulation shock attenuation heat sink | |
CN205421581U (en) | Noise elimination system with wedge | |
CN211421952U (en) | Noise reduction device for fan room | |
CN209802129U (en) | Cooling tower with silencer | |
CN219868258U (en) | Noise reduction type air source heat pump | |
CN219510994U (en) | Noise reduction mechanism of air cooling module unit | |
CN206401024U (en) | A kind of noise control system applied to master control room of nuclear power station | |
CN217898228U (en) | Impedance silencer for reducing fan noise |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |