EP0746844B1 - Anlage zur schalldämpfung einer maschine,wie einer turbomaschine mit einer brennturbine - Google Patents

Anlage zur schalldämpfung einer maschine,wie einer turbomaschine mit einer brennturbine Download PDF

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Publication number
EP0746844B1
EP0746844B1 EP95909844A EP95909844A EP0746844B1 EP 0746844 B1 EP0746844 B1 EP 0746844B1 EP 95909844 A EP95909844 A EP 95909844A EP 95909844 A EP95909844 A EP 95909844A EP 0746844 B1 EP0746844 B1 EP 0746844B1
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EP
European Patent Office
Prior art keywords
bell
frame
soundproofing
machine
lateral
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.)
Expired - Lifetime
Application number
EP95909844A
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English (en)
French (fr)
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EP0746844A1 (de
Inventor
Jean-François LALANNE BERDOUTICQ
Daniel Richard
Alain Tietto
Robert Tyack
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Hautefeuille Ginette
Societe dAcoustique Industrielle SARL
Original Assignee
Hautefeuille Ginette
Societe dAcoustique Industrielle SARL
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Publication of EP0746844A1 publication Critical patent/EP0746844A1/de
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Publication of EP0746844B1 publication Critical patent/EP0746844B1/de
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/8218—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only soundproof enclosures
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8442—Tray type elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered

Definitions

  • the invention defined in the claims relates to a soundproofing installation, for noisy machines in operation, such as are rotating machines, large sizes and powers, such as turbo turbine machines combustion, in particular turbo generator, turbo pump or turbo compressor, or as are compressors, blowers, and other aeraulic machines, whose operation generates great noise pollution for the environment.
  • noisy machines in operation such as are rotating machines, large sizes and powers, such as turbo turbine machines combustion, in particular turbo generator, turbo pump or turbo compressor, or as are compressors, blowers, and other aeraulic machines, whose operation generates great noise pollution for the environment.
  • the invention relates to such a soundproofing installation, or acoustic protection, which ensures simultaneously protection against wind, rain and other atmospheric agents such as snow, hail and sandstorms, as well as mechanical protection against the penetration of foreign bodies into the rotating part (s) of the soundproofed machine (s).
  • the protective cover 4 acoustic and mechanical, which is rigidly fixed to the chassis 2, includes a supporting framework 5, which supports, on the one hand, vibrating internal equipment, such as equipment refrigerants, fire protection, pumps, fans, piping and piping fluid, cables and electrical equipment, gateways and overhead crane, schematically represented and designated in together by the reference 6, and, on the other hand, acoustically insulating panels, forming an envelope soundproofing 7.
  • vibrating internal equipment such as equipment refrigerants, fire protection, pumps, fans, piping and piping fluid, cables and electrical equipment, gateways and overhead crane, schematically represented and designated in together by the reference 6, and, on the other hand, acoustically insulating panels, forming an envelope soundproofing 7.
  • the sound level at one meter outside the cowling 4 of figure 1 is located around 90 to 95 dbA.
  • the manufacturers have realized most of the installations according to FIG. 3.
  • the 4 'proximity hood essentially ensuring the mechanical protection of the machine 1
  • the chassis 2 by its frame 5 ', supporting the vibrating equipment 6, and by its 7 'mechanical protection casing resting on the 5 'frame
  • soundproofing is essentially provided by a second cover 11, enveloping with spacing the proximity hood 4 'and the chassis 2, and dissociated from the chassis 2 of the machine 1 and the frame 3 in resting its frame 12, supporting its envelope acoustically insulating 13, on slabs or studs 14 decoupled from frame 3 of the machine by flexible seals 15.
  • an installation allows you to obtain sound levels at one meter, from 80 to 85 dbA when the installation went up inside a building, and about 75 to 80 dbA for outdoor installations.
  • the presence of the outer cover 11 is also the cause of many disadvantages: when the installation is mounted in a building, it is particularly expensive due to the oversizing of the building principal that it imposes. Even outdoors, its dimensions are important and the framework 12 of the soundproofing casing It is more important for ensuring the wind resistance.
  • the transport of the outer casing 11 must be separated from that of machine 1 with its chassis 2 and its cover of proximity 4 ', the mounting of the external cover 11 is carried out on site and requires more civil works important, due to the slabs 14 and flexible joints 15.
  • the invention it is proposed to remedy the disadvantages of known installations, and the invention has aim of proposing a soundproofing installation for machines of the aforementioned type, which combines the advantages of known achievements without having the drawbacks thereof, and which, in general, is better suited than achievements known to the various desiderata of the practice.
  • An object of the invention is to propose an installation soundproofing allowing in particular its mounting in workshop on the machine and its chassis, the possibility of attachment of vibrating internal equipment, without transmission vibrations to the acoustically insulating wall, reduced size and offering protective performance high acoustics, the installation also ensuring weather protection of the machine during transport and on site, where it provides good resistance to wind.
  • Another object of the invention is to propose a such soundproofing installation making it possible to obtain modular performance according to needs, and realize installation interfaces with its environment without rigid connection.
  • the invention provides an installation soundproofing a noisy machine in operation, such as a turbo combustion turbine machine, in especially a turbo alternator group, mounted under a load-bearing framework surrounding the machine, the installation including a soundproofing bell, which envelops the minus the top and sides of the machine, and which has a roof and at least one side facade made up of at least minus an acoustically insulating wall, the roof of the bell being connected to the frame by elastic means suspension and vertical support, characterized in that the bell also surrounds the frame, which is rigidly fixed on a frame supporting the machine and anchored on a bedrock implanted in the ground of the installation site, and each side facade is also connected to the frame by elastic means of suspension and support vertical of the bell with respect to the frame, and the bell is also resiliently mounted on the frame by elastic means of lateral suspension of the bell with respect to the frame, said elastic means of lateral suspension cooperating with mechanical stops positively limiting the relative lateral displacements of the bell and the frame, after a
  • the bell forms a protective envelope acoustics, which is close to noise sources, while being dissociated from its framework or load-bearing framework, which, due to its rigid attachment to the chassis, fills its essential functions of ensuring mechanical resistance to wind, and to support the vibrating internal equipment, without transmit their vibrations to the soundproofing bell, due to the support of the acoustic protection envelope provided by elastic support means and suspension.
  • Installation may include hanging means elastic participating in vertical suspensions and lateral. Indeed, the transverse guide with damping of the bell on the frame can be ensured by elastic devices subjected to shearing, and filling simultaneously, by compressive stress or traction, support and vertical suspension function.
  • the elastic means of suspension and vertical support are separate from the means side suspension elastics with stops, although some like the others can understand springs, by example of steel coil springs, absorbing medium and low frequencies, and / or elements in viscoelastic material, for example in the form of studs or layers joined together, these materials absorbing high frequencies.
  • springs by example of steel coil springs, absorbing medium and low frequencies, and / or elements in viscoelastic material, for example in the form of studs or layers joined together, these materials absorbing high frequencies.
  • any combination of springs and viscoelastic elements can be considered for the production of elastic suspension means, in taking into account the forces and frequencies involved.
  • the bell includes at least one belt frame connected to the frame by at least said elastic means of suspension and vertical support, and removably supporting the roof and each side facade of the bell.
  • the bell can include several frames of belt, spaced vertically, and each connected to the frame by means of elastic means of vertical suspension, constituting anti-vibration supports, also mounted at different height levels. But, preferably, the bell comprises a single belt frame, substantially at the upper level of the frame, and connected to the latter by all the antivibration supports ensuring the vertical elastic suspension.
  • a party to less elastic means of lateral suspension either mounted between at least one front of the soundproofing bell and the frame.
  • these elastic means of lateral suspension are distributed at different levels in height, to limit travel more effectively relative sides of the bell and the frame.
  • Such a panel structure is particularly suitable in areas of the bell next to parts medium or low noise from the machine (s).
  • installation according to the invention further comprises at least one skirt soundproofing side, removably fixed, on the one hand, at the base of the bell to which it is suspended, and, on the other hand, on the massif through adjustable elastic support supports, along at least one side of the chassis, each skirt having a acoustically insulating wall structure, advantageously similar to that of the bell, each skirt being shaped so as to delimit simultaneously, laterally at chassis, space for equipment housing associated with the machine.
  • each skirt lateral forms, by its base connected to the massif, an interface sound insulation in cooperation with an acoustic seal insulator, which extends over a sufficient height, parallel to the base of the skirt, inside this last from which it is separated by a small distance, so to be defined between the acoustically insulating joint and the base of the skirt, a sound absorption baffle.
  • the upper part of the skirt can be advantageously fitted out as a footbridge by adding tear sheet or grating.
  • the base of the bell is connected to the above the chassis by at least one gasket at the air, mounted sliding substantially vertically along the inner face of the base of the bell.
  • FIG. 4 as in FIGS. 1 to 3, we have schematically represented in 1 a machine, for example a turbo alternator group driven by a gas turbine, mounted on a rigid metal frame 2 and anchored on a concrete block 3.
  • a machine for example a turbo alternator group driven by a gas turbine, mounted on a rigid metal frame 2 and anchored on a concrete block 3.
  • a proximity hood 16 simultaneously forming the hood soundproofing and mechanical protection of the machine 1, wraps the sides and top of this machine 1 while being mounted on its chassis 2.
  • the cowling 16 essentially comprises, on the one hand, a rigid frame 17, or supporting framework, rigidly fixed to the frame 2, and surrounding the machine 1, and, on the other hand, a soundproofing bell 18, constituting the actual acoustic protection enclosure, which wraps the frame 17, and therefore also the top and the sides of the machine 1.
  • the frame 17 is a mechanically welded metal frame, conventionally comprising vertical uprights and horizontal ties, including the top ties support the vibrating internal equipment 6 of the machine 1, and which ensures the mechanical resistance to the wind of the installation as well as the support of the soundproofing bell 18, as described below.
  • the bell 18 is elastically linked to the frame 17, on the one hand, by anti-vibration assemblies 19, providing vertical support with elastic suspension of the bell 18 on the frame 17, and, on the other hand, by lateral suspension assemblies 20, allowing to take up wind load.
  • anti-vibration assemblies 19 providing vertical support with elastic suspension of the bell 18 on the frame 17, and, on the other hand, by lateral suspension assemblies 20, allowing to take up wind load.
  • lateral suspension assemblies 20 allowing to take up wind load.
  • These include means side suspension elastics, such as studs of viscoelastic elastomer, combined with mechanical stops limiting, by their mutual supports, the deflections sides of the bell 18 relative to the frame 17, after a determined lateral stroke of elastic suspension, less than the maximum admissible extension stroke and / or compression, or even shearing, of the studs viscoelastic, the mechanical stops being, for example, formed by extensions of rigid supports between which viscoelastic pads are mounted, reason for which the side suspension assemblies 20 are called "elastic
  • these elastic stops 20 are mounted at two different height levels on the sides opposite the cowling 16, between the frame 17 and the bell 18, while the antivibration mounts 19 are mounted only at the top of the frame 17, on which the bell 18 is in elastic support, as shown in Figure 4, or to which the bell 18 is elastically suspended, as shown in Figure 5 and described below, thanks to their elastic means of vertical suspension, such as springs, preferably combined with elements of viscoelastic elastomer.
  • soundproof side skirts 21, each having a cross section in L extend along the sides of the chassis 2 being, on the one hand, suspended so removable at the base of the corresponding side of the bell 18, and, on the other hand, fixed to the bed 3 in a removable manner by elastic support supports 22, preferably adjustable.
  • each skirt 21 has an acoustically insulating wall structure, similar to that of bell 18, and its cross-sectional shape L allows it to delimit, on the corresponding side of the chassis 2, a lateral clearance 24 housing equipment 25 associated with the machine 1, such as pipes, tubes, cable harnesses, electrical cabinets, etc.
  • each skirt 21 is fitted as a walkway and supports a coating for this purpose checker plate or grating 27, to facilitate access maintenance personnel at inspection hatches, doors and other openings arranged for this purpose in the bell 18.
  • the structure and mounting of each skirt 21, as well as the acoustic interface at its base and the sealing interface in the air at the base of the bell 18 are represented by in more detail in Figure 8.
  • the bell 18 includes, facing the upper part of the frame 17, a belt frame 28, substantially shaped in U or ⁇ , on which rests the edge lower device of the upper part or roof 29 of the bell 18, which roof 19 covers the frame 7 and the machine 1 and is removably attached, by bolting 30, on the upper wing of the profile frame 28.
  • the frame 28 are suspended from the side and vertical facades 31 of the bell 18, which facades 31 are fixed so removable by bolting 32 to the lower wing of the frame profile 28.
  • the roof 19 and the facades 31 are thus elements that can be dismantled independently of each other.
  • Frame 28 the profile of which is open towards the frame 17, is closed, in locations spread over its periphery, by vertical plates 33 supporting each a horizontal console 34 towards the inside of the bell 18.
  • This console 34 is pierced with a through hole a vertical threaded stud 35, fixed in the adjusted position axially on the console 34 by a lock nut assembly nut 36, 37, the stud 35 also passing through a hole in the base of a U-shaped support piece 38 secured under the upper beam in I 39 of the frame 17, as well as a compression coil spring 40, made of steel, resting on its lower end on the base of the support piece 38 and loaded at its upper end by two plates support rigid 41, between which is compressed a plate 42 of viscoelastic silicone, and which are retained on the stud 35 by a nut 43.
  • these elastic means of suspension and support vertical can include two springs such as 40, or more, mounted in parallel and each around a stud such as 35, in which case the viscoelastic plate 42 and the plates 41 which compress it can be applied simultaneously against the upper ends of all springs bearing on the same support piece 38.
  • the spring (s) 40 absorbs (s) the low and medium frequencies, while the viscoelastic plate 42, or more similar plates possibly stacked, absorbs (s) the high frequencies.
  • the springs 40 are particularly effective, while in the bell portion 18 enveloping the turbine, the elastomer plates 42 are more efficient than the springs 40, which can optionally be omitted.
  • a sheet 44 Opposite the base of profile 28, on the face outer of the bell 18, a sheet 44, forming a gasket rainwater protection, extends from roof 29 to facade 31 and is fixed to profile 28 by a bolt 45 applying simultaneously against the base of the profile 28 a plate of viscoelastic material 46 forming an acoustic protection joint in line with profile 28.
  • the roof 29 and each facade 31 are produced under the form of an acoustically insulating wall, consisting of the assembly of acoustically insulating panels, such as shown in Figures 6 and 7.
  • the acoustically insulating wall used to constitute the one-piece bell 18 facing the noisiest parts of the machine, is made up, from the outside towards the inside of the bell, of a full external sheet 47 , on the internal face of which are fixed, by welding or gluing, the external wings 49 of stiffening members 48, in Z-folded profile, which are parallel to each other and transverse to the wall, and spaced apart by a pitch determined, function of the natural frequency of the wall, therefore of the acoustic attenuation to be obtained, these members 48 being vertical in the wall of the facades 31, then a layer 50 of a viscoelastic material bonded against the internal face of the external sheet 47, between the members 48, then a prestressing sheet 51, or preformed lining sheet, ensuring permanent and uniform compression of the viscoelastic material of the layer 50, and which is fixed by welding at 52 to the ux frames 48 between which it extends, this prestressing sheet 51 making it possible to absorb residual vibrations
  • each front wall is closed by U-shaped sheets overlapping the structure shown in Figure 6, and allowing in particular the removable fixing of the wall to the frame 28 of the bell 18 by the bolting 32 of the figure 5.
  • the acoustically insulating wall structure of the Figure 7 is suitable for constituting the bell 18 in its opposite parts of the quieter areas of the machine.
  • the wall of FIG. 7 does not differ from the wall of Figure 6 only by the fact that it includes no prestressing sheet 51 or outer layer 54 of mineral wool, so its material complex fibrous mineral consists only of layer 55 of low thickness and density and the inner layer 56 of great thickness and density.
  • the elements of figure 7 similar to those of figure 6 are marked by the same references.
  • Figure 8 shows that the air tightness between the base of each side face 31 of the bell 18 and the face upper part of chassis 2 is provided by a seal 60, in the form of a sliding or sliding mounted plate substantially vertically, along the inner face from the base of the facade 31, between the latter and the base of the frame 17, under elastic stops 20 of the level inferior.
  • a seal 60 in the form of a sliding or sliding mounted plate substantially vertically, along the inner face from the base of the facade 31, between the latter and the base of the frame 17, under elastic stops 20 of the level inferior.
  • the seal 60 is supported by its lower edge in a guide 61 welded or bolted to the frame 2 and retained by its upper edge between the facade 31 and a wing a Z profile 62, bolted at 63 by its other wing against the U-shaped profile 64 which closes the base of the facade 31, the maximum stroke of the seal 60 in the Z-profile 62 corresponding to the maximum vertical displacement of the bell 18 with respect to frame 17 and chassis 2, under the action of the antivibration supports 19 for suspension vertical.
  • FIG 8 also shows that, by the end internal of its upper part 26, the skirt 21, constituted for example of an acoustically insulating wall such as shown in Figure 6 or 7, is suspended from the base of the facade 31, thanks to an extension of an external sheet 65 skirt 21 and a sheet 66 folded square around a internal edge profile 67 of the skirt 21, these sheets 65, 66 being secured and bolted at 68 on an angle secured under the profile 64 of the base of the facade 31.
  • a flap 70 bolted to the external face of the base of the facade 31, and resting against the external sheet 65 of the skirt 21 by an elastomer seal, provides protection of this removable junction against dust, sand and water runoff.
  • Figure 8 also shows that the vertical part 71 of the skirt 21 is fixed to its horizontal part 26 by a closed corner profile 72, and that the base of this part vertical 71 is in abutment against a border 73, continuous over the entire periphery of the cowling and projecting from the block 3, by support supports 22 made up of studs elastic bands adjustable in height and screwed under a profile closed from lower edge 74 of skirt 21, to cooperate with feet 75, of adjustable height, mounted on a base plate 76 welded to the edge 73.
  • a sound absorption baffle is made at the base of the skirt 21, between the latter and a acoustically insulating joint 79, screwed by its base to the plate 76 in a position in which it extends vertically, substantially to mid-height of the skirt 21 and parallel to the vertical part 71 thereof, at the interior of this vertical part, the joint of which is separated from a short distance.
  • This joint 79 is made up like the acoustically insulating wall of figure 6 or Figure 7, but it is mounted so that its full sheet is placed towards the chassis 2, and its perforated sheet towards the exterior, i.e. facing the internal sheet perforated with the vertical part 71 of the skirt 21. A efficient sound insulation interface is thus achieved between the skirt 21 and the bed 3.
  • the rollover produced according to FIGS. 4 to 8 fills simultaneously the same functions as the 4 'cover of mechanical protection and that the protective envelope acoustic 11 of the embodiment of Figure 3, while providing the same performance, but at a cost much more economical, due to its reduced size, and the considerable reduction in the work required on site, including assembly and civil engineering.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)
  • Vibration Prevention Devices (AREA)

Claims (12)

  1. Vorrichtung zur Schalldämpfung einer in Betrieb geräuschvollen Maschine (1) wie z. B. einer drehenden Maschine, insbesondere einer Turbomaschine mit Verbrennungsturbine oder einer sonstigen aeraulischen Maschine, die unter einem Gestell (17) montiert ist, das die Maschine (1) umgibt, wobei die Vorrichtung aus einer Schalldämpfungsglocke (18) besteht, die die Maschine (1) zumindest oben und an den Seiten umgibt und die ein Dach (29) und mindestens eine Seitenwand (31) aufweist, welche aus mindestens einer schallisolierenden Wand bestehen, wobei das Dach (29) der Glocke (18) mit dem Gestell (17) durch federnde Mittel (19) zur Aufhängung und zum senkrechten Abstützen verbunden ist,
    dadurch gekennzeichnet, daß die Glocke (18) auch das Gestell (17) umgibt, das starr auf einem Unterbau (2) befestigt ist, der die Maschine (1) trägt und auf einem Sockel (3) verankert ist, der in den Boden des Aufstellungsortes eingelassen ist, und jede Seitenwand (31) mit dem Gestell (17) ebenfalls durch federnde Mittel (19) zur Aufhängung und zum senkrechten Abstützen der Glokke (18) an dem Gestell (17) verbunden ist, und die GIocke (18) auf dem Gestell (17) auch durch federnde Mittel (20) zur seitlichen Aufhängung der Glocke (18) an dem Gestell (17) federnd angebracht ist, wobei die genannten Mittel (20) zur seitlichen Aufhängung mit mechanischen Anschlägen zusammenwirken, die die seitlichen Verschiebungen der Glocke (18) gegenüber dem Gestell (17) nach einem bestimmten seitlichen Aufhängungshub der gennanten federnden Mittel (20) positiv begrenzen.
  2. Vorrichtung zur Schalldämpfung nach Anspruch 1,
    dadurch gekennzeichnet, daß sie federnde Aufhängungsmittel (19, 20) aufweist, die zu der senkrechten und der seitlichen Aufhängung beitragen.
  3. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 1 und 2,
    dadurch gekennzeichnet, daß die federnden Aufhängungsmittel aus Federn (40) und/oder Elementen (42) aus viskoelastischem Elastomer bestehen.
  4. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, daß die Glocke (18) mindestens einen Ringrahmen (28) aufweist, der mit dem Gestell (17) durch mindestens die gennanten federnden Mittel (40, 42) zur Aufhängung und zum senkrechten Abstützen verbunden ist, und der das Dach (29) und jede Seitenwand (31) der Glocke (18) abnehmbar trägt.
  5. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, daß zumindest ein Teil der genannten federnden Mittel (20) zur seitlichen Aufhängung zwischen mindestens einer Seitenwand (31) der Schalldämpfungsglocke (18) und dem Gestell (17) angebracht ist.
  6. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, daß zumindest eine Schallisolierende Wand aus einer Gesamtanordnung von Schallisolierungsplatten besteht, die jeweils von der Außenseite zur Innenseite der Wand aufweisen:
    ein Außen-Vollblech (47), an dessen Innenseite Versteifungen (48) befestigt sind, die in einem bestimmten Abstand voneinander parallel zueinander und quer zur Wand verlaufen,
    mindestens eine Schicht (50) aus viskoelastischem Material, die zwischen den Versteifungen (48) auf die Innenseite des Außenblechs (47) geklebt ist,
    ein Verbund (53) von mindestens zwei Schichten (55, 56) aus faserigem, mineralischen Stoff von unterschiedlichen Dicken und/oder Dichten, der sich zwischen den Versteifungen erstreckt, und dessen eine Schicht (55) von geringerer Dicke und/oder Dichte nach innen durch eine Schicht (56) von größerer Dicke und/oder Dichte verdoppelt wird, wobei der Verbund (53) nach innen bevorzugt durch eine Glasfaserabdeckung geschützt ist, und
    ein perforiertes Innenblech (57) zum mechanischen Schutz des genannten Verbundes aus faserigem, mineralischen Stoff, das von den Versteifungen (48) festgehalten wird.
  7. Vorrichtung zur Schalldämpfung nach Anspruch 6,
    dadurch gekennzeichnet, daß zumindest eine Schallisolierungsplatte zudem von der Außenseite zur Innenseite der Wand und zwischen dem viskoelastischen Material (50) und der Schicht (55) von geringerer Dicke und/oder Dichte des Verbundes (53) aus faserigem, mineralischen Stoff aufweist:
    ein Verdopplungsblech (51), das an Versteifungen (48) befestigt ist und ein ständiges Zusammendrücken des viskoelastischen Materials (50) gewährleistet, und
    eine zusätzliche Schicht (54) des Verbundes (53) aus faserigem, mineralischen Stoff, wobei die genannte zusätzliche Schicht (54) eine größere Dicke und/oder Dichte hat als die Schicht (55) des Verbundes (53), an die sie angrenzt.
  8. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 4 bis 7,
    dadurch gekennzeichnet, daß zumindest ein Ringrahmen (28) der Glocke (18) mittels Gesamtanordnungen (19) zur federnden Aufhängung, die jeweils aus mindestens einer Spiralfeder (40) bestehen, die vorzugsweise mit mindestens einer viskoelastischen Elastomerschicht (42) verbunden ist, an dem Gestell (17) federnd aufgehängt und/oder sich auf dieses stützt.
  9. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, daß sie zudem zumindest eine seitliche Schalldämp-fungsverkleidung (21) aufweist, die einerseits an der Basis der Glocke (18), an der sie aufgehängt wird, und andererseits an dem Sockel (8) mittels verstellbarer, federnder Auflagetragteile (22) zumindest entlang einer Seite des Unterbaus (2) abnehmbar befestigt wird, wobei jede seitliche Verkleidung (21) den Aufbau einer schallisolie-renden Wand dergestalt aufweist, daß die Gleichförmigkeit der Schallisolierung im Bereich des Unterbaus (2) gewährleistet ist, und dabei seitlich von letzterem einen Freiraum (24) zur Unterbringung von mit der Maschine (1) verbundenen Ausrüstungen umschreibt.
  10. Vorrichtung zur Schalldämpfung nach Anspruch 9,
    dadurch gekennzeichnet, daß jede seitliche Verkleidung (21) mit ihrer mit dem Sockel (3) verbundenen Basis (71) in Zusammenwirkung mit einer schallisolierenden Dichtung (79) eine Schallisolierungs-Grenzfläche bildet, wobei diese Dichtung sich über eine ausreichende Höhe parallel zu der Basis (71) der Verkleidung (21)- und in deren Inneren erstreckt und dabei von dieser leicht beabstandet ist, dergestalt daß zwischen der schallisolierenden Dichtung (79) und der Basis der Verkleidung (21) eine schallabsorbierende Blende gebildet wird,
  11. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 9 und 10,
    dadurch gekennzeichnet, daß der obere Teil (26) der Verkleidung (21) durch Anbringung von Warzenblech oder Gitterrost als Laufsteg (27) ausgeführt ist.
  12. Vorrichtung zur Schalldämpfung nach einem der Ansprüche 1 bis 11,
    dadurch gekennzeichnet, daß die Basis der Glocke (18) mit der Oberseite des Unterbaus (2) durch mindestens eine luftdichte Dichtung (60) verbunden ist, die im wesentlichen senkrecht an der Innenseite der Basis der Glocke (18) entlang verschiebbar angebracht ist.
EP95909844A 1994-02-23 1995-02-20 Anlage zur schalldämpfung einer maschine,wie einer turbomaschine mit einer brennturbine Expired - Lifetime EP0746844B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9402053 1994-02-23
FR9402053A FR2716562B1 (fr) 1994-02-23 1994-02-23 Installation d'insonorisation d'une machine, telle que turbo machine à turbine à combustion.
PCT/FR1995/000194 WO1995023406A1 (fr) 1994-02-23 1995-02-20 Installation d'insonorisation d'une machine, telle que turbo machine a turbine a combustion

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EP0746844A1 EP0746844A1 (de) 1996-12-11
EP0746844B1 true EP0746844B1 (de) 1998-03-18

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CN103883151A (zh) * 2012-12-20 2014-06-25 北汽福田汽车股份有限公司 发动机噪声检验半消声室
FI20165069A (fi) 2016-02-02 2017-08-03 Framery Oy Seinärakenne
DE102017114484A1 (de) * 2017-06-29 2019-01-03 Schaeffler Technologies AG & Co. KG Wälzlager sowie Kraftfahrzeuggetriebe mit einem Wälzlager
CN110360162A (zh) * 2019-08-10 2019-10-22 山西巨龙风机有限公司 一种伸缩式充气隔音环保消音器
CA3070843A1 (en) * 2020-02-05 2021-08-05 Foamtech North America Ltd. Portable sound-reducing enclosure for power equipment
CN113066464B (zh) * 2021-04-01 2022-05-24 温州大学 一种声光子晶体结构

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* Cited by examiner, † Cited by third party
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AT332173B (de) * 1972-10-27 1976-09-10 List Hans Schalldammend gekapselte brennkraftmaschine
US3860085A (en) * 1974-02-11 1975-01-14 Coast Marine Associates Inc Sound suppression hood assembly
DE3542038A1 (de) * 1985-11-28 1987-06-04 Karl Rische Vorrichtung zur daempfung von infraschall
SE501861C2 (sv) * 1992-12-30 1995-06-06 Saab Scania Ab Arrangemang för att dämpa ljudöverföring genom ett utrymme eller spalt mellan ett fordonschassi och en på chassit fjädrat upphängd hytt

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FR2716562A1 (fr) 1995-08-25
DE69501819D1 (de) 1998-04-23
AU1815895A (en) 1995-09-11
FR2716562B1 (fr) 1996-04-26
EP0746844A1 (de) 1996-12-11
ES2114741T3 (es) 1998-06-01
DE69501819T2 (de) 1998-11-19
WO1995023406A1 (fr) 1995-08-31

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