CN115638111A - Sound insulation cover for large-displacement screw compressor - Google Patents
Sound insulation cover for large-displacement screw compressor Download PDFInfo
- Publication number
- CN115638111A CN115638111A CN202211218915.0A CN202211218915A CN115638111A CN 115638111 A CN115638111 A CN 115638111A CN 202211218915 A CN202211218915 A CN 202211218915A CN 115638111 A CN115638111 A CN 115638111A
- Authority
- CN
- China
- Prior art keywords
- sound insulation
- sound
- insulation cover
- roof beam
- board
- 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.)
- Pending
Links
Images
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a sound insulation cover for a large-displacement screw compressor, which is characterized in that: the sound insulation cover comprises a sound insulation cover frame and a plurality of sound insulation plates, wherein the sound insulation cover frame is of a cuboid or square frame structure, the plurality of sound insulation plates are arranged on the sound insulation cover frame and used for isolating noise of a compressor, and the sound insulation plates and the sound insulation cover frame form a sound insulation cover with a closed top, a closed periphery and an open bottom; the sound insulation cover for the large-displacement screw compressor disclosed by the invention is used for carrying out noise reduction treatment on the compressor by designing the whole sound insulation cover, so that the noise attenuation is less than 25dB, and the requirement that the air noise of an air compressor unit running under a rated working condition is not higher than 85dB (A) is met.
Description
Technical Field
The invention belongs to the technical field of air compressors, and relates to a sound insulation cover for a large-displacement screw compressor.
Background
The ship compressed air system is one of ship pipeline systems and mainly provides a pipeline system for a generator, a main engine, blowing of impurities at a submarine gate and other places needing compressed air on a ship. The air compressor is an indispensable function in a compressed air system of a ship as a device for generating and supplying compressed air. Because the space of the ship is compact and the required compressed air pressure is high, a large-displacement screw compressor is often selected as an air source to provide compressed air for a ship compressed air system. The screw compressor often generates huge noise in the process of producing compressed air, the noise of the screw compressor mainly comes from gas pressure pulsation noise, wherein the exhaust pressure pulsation noise reaches 110dB, and the air noise of the air compressor unit running under the rated working condition is not higher than 85dB (A).
Accordingly, there is a need for an acoustic enclosure to reduce compressor noise.
Disclosure of Invention
In order to solve the problems, the invention provides the sound insulation cover for the large-displacement screw compressor, the integral sound insulation cover is designed to reduce noise of the compressor, so that the noise attenuation is smaller than 25dB, and the requirement that the air noise of the air compressor unit running under the rated working condition is not higher than 85dB (A) is met.
The utility model provides a sound insulation cover for big discharge capacity helical-lobe compressor, includes sound insulation cover frame and acoustic baffle, the sound insulation cover frame is cuboid or square frame construction, the acoustic baffle has a plurality ofly, and is a plurality of the noise that the acoustic baffle was installed in sound insulation cover frame and is used for isolated compressor, the acoustic baffle constitutes the top and seals all around, bottom open-ended sound insulation cover with sound insulation cover frame. The periphery of the closed acoustic hood frame is provided with acoustic insulation boards on the front, back, left side and right side for sealing to isolate noise.
Furthermore, the sound insulation board includes planking, perforated plate I and perforated plate II, the periphery of planking and perforated plate I laminates each other, the periphery of perforated plate I and perforated plate II laminates each other, forms first amortization chamber between planking and the perforated plate I, forms second amortization chamber between perforated plate I and the perforated plate II.
Further, sound insulation material I is filled in the first silencing cavity, and sound insulation material II is arranged between the outer plate and the sound insulation material I.
Further, sound insulation material I is filled in the second sound attenuation cavity.
Further, still include air intake silencer and muffler gallows, air intake silencer passes through the muffler gallows to be installed in the sound proof housing, the top of sound proof housing frame is provided with hoist and mount roof beam I and hoist and mount roof beam II along the sound proof housing length direction interval, the muffler gallows is installed in the sound proof housing frame through hoist and mount roof beam I and hoist and mount roof beam II.
Further, the right side level of sound proof cover frame is provided with installation roof beam I, the base and the installation roof beam I of muffler gallows are connected.
Further, the sound insulation cover is provided with an exhaust hole for fixing the compressor exhaust pipe.
Further, the sound-proof panel has at least one door hingedly mounted to the sound-proof housing frame for serving as a sound-proof housing.
Further, the bottom surface of the sound insulation cover is provided with a shock pad for preventing sound leakage.
Further, still including installation roof beam II, installation roof beam II has two tip along self length direction, and the one end of installation roof beam II is installed in the sound proof cover frame, and the other end of installation roof beam II is installed in hoist and mount roof beam I.
The invention has the beneficial effects that:
the invention provides a sound insulation cover for a large-displacement screw compressor, which is characterized in that the noise insulation cover is designed integrally to reduce noise of the compressor, so that the noise attenuation is less than 25dB, and the requirement that the air noise of an air compressor unit running under a rated working condition is not higher than 85dB (A) is met; the sound insulation board is provided with two sound attenuation cavities, and sound attenuation materials are filled in the sound attenuation cavities, so that the noise generated by the compressor unit can be effectively absorbed and reduced; the installation demand of compressor group equipment has been satisfied in the setting of hoist and mount roof beam I, hoist and mount roof beam II, installation roof beam I and installation roof beam II for the supporting installation of compressor unit is more firm and stable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a rear view of the present invention;
FIG. 4 is a bottom view of the present invention;
FIG. 5 is a left side view of the present invention;
FIG. 6 is a right side view of the present invention;
FIG. 7 is a schematic view of the structure of the acoustical panel of the present invention.
Detailed Description
FIG. 1 is a schematic structural view of the present invention; FIG. 2 is a front view of the present invention; FIG. 3 is a rear view of the present invention; FIG. 4 is a bottom view of the present invention; FIG. 5 is a left side view of the present invention; FIG. 6 is a right side view of the present invention; FIG. 7 is a schematic view of the structure of the acoustical panel of the present invention.
It should be noted that in the description of the present specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
As shown in the figure, a sound insulation cover for large discharge capacity screw compressor, including sound insulation cover frame 1 and acoustic baffle 2, sound insulation cover frame 1 is cuboid frame construction, acoustic baffle 2 has a plurality ofly, and is a plurality of acoustic baffle 2 is installed in the noise that acoustic baffle frame 1 is used for isolated compressor, acoustic baffle 2 and acoustic baffle frame 1 constitute the top and seal all around, bottom open-ended sound insulation cover, and the sound insulation cover is installed in the mounting platform of compressor with the mode that the cover is located outside the compressor. The air inlet silencer 5 and the silencer hanging bracket 6 are further arranged in the embodiment, and the air inlet silencer 5 is installed in the sound insulation cover through the silencer hanging bracket 6.
The sound insulation cover frame 1 in the embodiment is formed by connecting rectangular steel pipes through stainless steel bolts, as shown in fig. 1, four rectangular steel pipes are vertically arranged, eight rectangular steel pipes are horizontally arranged, and the twelve rectangular steel pipes form a main framework of the sound insulation cover frame 1; as shown in fig. 2, two vertical rectangular steel pipes are arranged on the front surface of the main framework; as shown in fig. 3, two vertical rectangular steel pipes are arranged on the back of the main framework; as shown in fig. 5, a vertical rectangular steel pipe is disposed on the left side of the main frame, and the five vertical rectangular steel pipes are used for enhancing the structural strength and structural stability of the main frame.
In this embodiment, the top of the sound-proof housing frame is provided with a hoisting beam i 7 and a hoisting beam ii 8 at intervals along the length direction of the sound-proof housing, as shown in fig. 4; two horizontal mounting beams i 9 are provided at intervals in the height direction on the right side of the sound-proof cover frame 1, as shown in fig. 6. The lifting beam I7 and the lifting beam II 8 are used for mounting a silencer hanger 6, the silencer hanger 6 is rectangular, and two hanging rods are respectively arranged at the left side of the silencer hanger 6 in the length direction and the middle point of the silencer hanger 6 in the length direction; two suspension rods on the left side of the length direction of the silencer suspension bracket 6 are arranged at two vertex positions on the left side of the silencer suspension bracket 6, and the two suspension rods are connected to a hoisting beam I7; two hanging rods at the middle point position of the length direction of the silencer hanging bracket 6 are respectively arranged at the middle point position of two long edges of the silencer hanging bracket 6, and the two hanging rods are connected to the second hoisting beam 8. The short edge on the right side of the silencer hanging bracket 6 is connected with a mounting beam I9 close to the top of the sound-proof housing through a bolt. Hoist and mount roof beam I7, hoist and mount roof beam II 8 and installation roof beam I9 provide the mounting point position for muffler gallows 6 from many azimuths, make the more firm of 5 board dresses of muffler that admits air. The mounting beam I9 also provides a mounting position for mounting of an electric control box of the compressor, a monitoring screen and other auxiliary electrical facilities.
In this embodiment, still be provided with installation roof beam II 3, installation roof beam II 3 has two tip along self length direction, and the one end of installation roof beam II 3 is installed in sound proof cover frame 1, and the other end of installation roof beam II 3 is installed in hoist and mount roof beam I7. Two installation beams II 3 are uniformly distributed on the installation beam II 3 of the embodiment along the width direction of the sound insulation cover frame 1, and the installation beam II 3 is arranged to facilitate installation and fixation of compressor auxiliary equipment needing to be hoisted in the sound insulation cover like a compressor exhaust pipe and the like. This is a technical means that can be understood by those skilled in the art, and is not described in detail again.
In this embodiment, rectangle steel pipe, hoist and mount roof beam I7, hoist and mount roof beam II 8, installation roof beam I9 and installation roof beam II 3 have constituted sound proof cover frame 1 that has a plurality of grid structures jointly, and sound proof board 2 then needs to correspond the quantity setting of net, all installs a sound proof board 2 through fastening screw in every net. Sealing strips are arranged at the joints of the periphery of the sound insulation plate 2 and the sound insulation cover frame 1, so that the sealing strips are tightly matched with the sound insulation cover frame 1 to prevent sound leakage of the box body.
In this embodiment, the sound insulation board 2 includes an outer plate 201, a perforated plate i 204 and a perforated plate ii 205, the peripheries of the outer plate 201 and the perforated plate i 204 are attached to each other, the peripheries of the perforated plate i 204 and the perforated plate ii 205 are attached to each other, a first silencing chamber is formed between the outer plate 201 and the perforated plate i 204, and a second silencing chamber is formed between the perforated plate i 204 and the perforated plate ii 205. The outer panel 201 in this embodiment is a steel plate.
In this embodiment, sound insulation materials i 203 are filled in the first sound attenuation chamber and the second sound attenuation chamber, and sound insulation materials ii 202 are arranged between the outer plate 201 and the sound insulation materials i 203. Sound-proof material I203 is superfine glass fiber, and sound-proof material II 202 is damping material, and the sound-proof cover is inside to be relative enclosure space, does not have sound absorbing material, and the noise can superpose in the enclosure space and form the high amplitude noise of high frequency. Therefore, a sound absorption structure needs to be added, for example, a porous sound absorption material absorbs high-frequency sound, but the porous sound absorption material has poor sound absorption performance for low-frequency sound, and therefore, the resonance sound absorption principle is adopted to solve the absorption of low-frequency sound. In order to ensure that the resonance sound absorption structure has good sound absorption performance in a wider frequency range, the sound absorption structure of the multi-layer perforated plate formed by combining two or more layers of perforated plates is the optimal choice, and the technical scheme of the invention is that a perforated plate I204 and a perforated plate II 205 are arranged to form the sound absorption structure of the double-layer perforated plate. The biggest problem of the common perforated plate in use is that the sound resistance is too small, the sound absorption frequency band is narrow when the porous material is not filled behind, and in order to widen the sound absorption frequency band, a resonance sound absorption structure is formed by a thin metal plate with the plate thickness and the hole diameter of less than 1mm and the perforation rate of 1% -5% and a back air layer. Since the perforations are fine and dense, the acoustic resistance is much greater than that of a perforated plate, while the acoustic mass is much smaller. Similarly, to meet the requirement of absorbing sound of different frequencies, a double-layer or multi-layer combined structure is often made. The technical scheme of the invention is that the sound insulation plate 2 consists of a steel plate, a damping material, double-layer sound insulation material superfine glass fiber and two perforated plates, and can ensure that the plate has good sound absorption and sound insulation effects and sufficient rigidity and strength.
In this embodiment, two sound insulation panels 2 are installed on the sound insulation cover frame 1 in a hinged manner to serve as a cover door of the sound insulation cover in the sound insulation panels 2. The sound insulation plate 201 is hinged on the front surface of the sound insulation cover frame 1, and the sound insulation plate 202 is hinged on the back surface of the sound insulation cover frame 1; the cover door is arranged to facilitate entering the sound insulation cover to carry out routine inspection and maintenance on the compressor.
In this embodiment, the sound-proof cover is provided with a vent hole 4 for fixing the compressor discharge pipe. The exhaust hole 4 is provided on the sound insulation panel on the left side of the sound insulation cover and located above the sound insulation panel. The compressor discharge pipe extends to the outside of the sound insulation cover through the exhaust hole 4.
In this embodiment, a shock pad for preventing sound leakage is disposed on the bottom surface of the sound insulation cover. The shock pad can prevent the transmission of structure noise to the sound-proof cover when the sound leakage.
When the sound insulation cover is installed, the sound insulation cover and the middle base of the compressor are vertically stretched and limited through bolts, and meanwhile, the installation limiter is limited in the horizontal direction. Relative displacement between the sound-proof cover and the middle base is allowed during impact, and an impact pad is adopted at a contact part to prevent sudden acceleration increase. A motor main cable outlet box of the compressor penetrates through the sound insulation cover to be connected with an external cable, sound insulation and absorption materials are filled between the outlet box and the sound insulation cover, and the relative displacement between the junction box and the sound insulation cover is allowed during high sea clearance and impact while sealing is guaranteed. The sound insulation cover is provided with a handle, a wind hook and other movable components which are fastened by a fastening device, so that secondary noise is prevented from being generated under the action of impact and vibration. This is a technical measure understood or known by those skilled in the art and will not be described herein.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A sound insulation cover for a large-displacement screw compressor is characterized in that: including sound insulation cover frame and sound insulation board, sound insulation cover frame is cuboid or square frame construction, the sound insulation board has a plurality ofly, and is a plurality of the sound insulation board is installed in the noise that sound insulation cover frame is used for isolated compressor, sound insulation board and sound insulation cover frame constitute the top and seal all around, bottom open-ended sound insulation cover.
2. The acoustic enclosure for a large displacement screw compressor of claim 1, wherein: the sound insulation board comprises an outer board, a perforated board I and a perforated board II, wherein the peripheries of the outer board and the perforated board I are mutually laminated, the peripheries of the perforated board I and the perforated board II are mutually laminated, a first silencing cavity is formed between the outer board and the perforated board I, and a second silencing cavity is formed between the perforated board I and the perforated board II.
3. The acoustic hood for a large displacement screw compressor of claim 2, wherein: the first silencing cavity is filled with a sound insulation material I, and a sound insulation material II is arranged between the outer plate and the sound insulation material I.
4. The acoustic hood for a large displacement screw compressor of claim 2, wherein: and a sound insulation material I is filled in the second sound attenuation cavity.
5. The acoustic shroud for a large displacement screw compressor of claim 1, wherein: still include admit air muffler and muffler gallows, the muffler that admits air passes through the muffler gallows to be installed in the sound-proof housing, the top of sound-proof housing frame is provided with hoist and mount roof beam I and hoist and mount roof beam II along sound-proof housing length direction interval, the muffler gallows is installed in the sound-proof housing frame through hoist and mount roof beam I and hoist roof beam II.
6. The acoustic shroud for a large displacement screw compressor of claim 1, wherein: the right side level of sound proof cover frame is provided with installation roof beam I, the base and the installation roof beam I of muffler gallows are connected.
7. The acoustic enclosure for a large displacement screw compressor of claim 1, wherein: the sound insulation cover is provided with an exhaust hole for fixing the compressor exhaust pipe.
8. The acoustic shroud for a large displacement screw compressor of claim 1, wherein: the sound insulation board is provided with at least one cover door which is arranged on the sound insulation cover frame in a hinged mode and is used as a sound insulation cover.
9. The acoustic shroud for a large displacement screw compressor of claim 1, wherein: and the bottom surface of the sound insulation cover is provided with a shock pad for preventing sound leakage.
10. The acoustic shroud for a large displacement screw compressor of claim 1, wherein: still including installation roof beam II, installation roof beam II has two tip along self length direction, and the one end of installation roof beam II is installed in the sound proof cover frame, and the other end of installation roof beam II is installed in hoist and mount roof beam I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211218915.0A CN115638111A (en) | 2022-10-07 | 2022-10-07 | Sound insulation cover for large-displacement screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211218915.0A CN115638111A (en) | 2022-10-07 | 2022-10-07 | Sound insulation cover for large-displacement screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115638111A true CN115638111A (en) | 2023-01-24 |
Family
ID=84943202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211218915.0A Pending CN115638111A (en) | 2022-10-07 | 2022-10-07 | Sound insulation cover for large-displacement screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115638111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117884942A (en) * | 2024-03-14 | 2024-04-16 | 苏州国融前沿技术有限公司 | Sound-proof housing structure for high-noise processing equipment |
-
2022
- 2022-10-07 CN CN202211218915.0A patent/CN115638111A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117884942A (en) * | 2024-03-14 | 2024-04-16 | 苏州国融前沿技术有限公司 | Sound-proof housing structure for high-noise processing equipment |
| CN117884942B (en) * | 2024-03-14 | 2024-05-10 | 苏州国融前沿技术有限公司 | Sound-proof housing structure for high-noise processing equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020011065A1 (en) | Gas turbine exhaust passage and damper system for same | |
| CN201893227U (en) | Ventilation and denoising device used in ultra-high voltage converter transformer | |
| CN115638111A (en) | Sound insulation cover for large-displacement screw compressor | |
| CN204511651U (en) | The sound-deadening and noise-reducing device of heavy duty generator set | |
| CN103267084A (en) | Three-dimensional frame type buoyant raft vibration isolation device | |
| CN218151339U (en) | Compressor sound insulation cover | |
| CN211144922U (en) | Assembled sound-insulation noise-reduction device for fan | |
| CN212898918U (en) | Novel detachable Roots blower sound-proof housing | |
| CN212615634U (en) | Low flow resistance tubular noise elimination room is arranged to big amount of wind tail | |
| CN208280350U (en) | A kind of Anti-seismic used in nuclear power station wall hole installing type silencer | |
| CN211144814U (en) | Air conditioner and air-cooled screw unit | |
| CN102953572A (en) | Sound insulation room of Roots motor | |
| CN210426164U (en) | Totally-enclosed noise reduction system for air conditioner main unit of cooling tower | |
| CN207262692U (en) | A kind of duct acoustics bundle system of fan air channel | |
| CN218481956U (en) | Impedance type silencer device | |
| CN107452491B (en) | Noise reduction system for reactor | |
| CN210532659U (en) | Static pressure box | |
| JPH0712069A (en) | Soundproof structure for package type screw compressor | |
| CN216474597U (en) | Silencing box body structure | |
| CN212656895U (en) | Mobile lighting vehicle | |
| CN212838456U (en) | High-efficient whistle box and fan that has silencing device | |
| CN221001634U (en) | Composite sound insulation board and thermal power plant boiler room sound insulation structure | |
| CN212032638U (en) | Sound insulation shell with multilayer structure | |
| CN213753604U (en) | Electrical switch cabinet | |
| CN216740846U (en) | Sound insulation and noise reduction shed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |