EP1914718A1 - Utilisation d'un matériau composite fibreux dans des cages pour la réduction d'émission acoustique dans leur environnement - Google Patents

Utilisation d'un matériau composite fibreux dans des cages pour la réduction d'émission acoustique dans leur environnement Download PDF

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Publication number
EP1914718A1
EP1914718A1 EP06022062A EP06022062A EP1914718A1 EP 1914718 A1 EP1914718 A1 EP 1914718A1 EP 06022062 A EP06022062 A EP 06022062A EP 06022062 A EP06022062 A EP 06022062A EP 1914718 A1 EP1914718 A1 EP 1914718A1
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EP
European Patent Office
Prior art keywords
casing
composite material
enclosure
elements
enclosures
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.)
Withdrawn
Application number
EP06022062A
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German (de)
English (en)
Inventor
Michael Seeger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP06022062A priority Critical patent/EP1914718A1/fr
Publication of EP1914718A1 publication Critical patent/EP1914718A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials

Definitions

  • the invention relates to an enclosure of moving components, which has a casing.
  • Such enclosures are known. Hitherto, it has been customary to use moving or rotating components, such as free shafts and / or couplings, for example. surrounded by power plants by means of steel formwork as occupational safety devices, e.g. Health and safety regulations to be met, so that operators of the machine or power generation system against unwanted intervention in the field of rotating or moving components is successfully prevented.
  • moving or rotating components such as free shafts and / or couplings, for example.
  • power plants by means of steel formwork as occupational safety devices, e.g. Health and safety regulations to be met, so that operators of the machine or power generation system against unwanted intervention in the field of rotating or moving components is successfully prevented.
  • the cladding consists of steel.
  • steel is a relatively good medium for the transmission of sound, which arises in the exemplary power generation plant, and by means of structure-borne sound propagation to the shaft or coupling and even reaches to the casing and merges into airborne sound at the respective surface.
  • sound-damping means such. Surrounding mineral fibers, such as rock wool, so that these insulation materials cause sound insulation.
  • a disadvantage of the known state of the art is that for enclosing relatively large, rotating or moving components, such as are present for example in power generation plants, correspondingly large formwork must be used. Since these are made of the known material steel, is easy conceivable that the handling effort for mounting the casing is considerable, and can be accomplished only with tools such as cranes or the like lifting equipment. This is not only time consuming but also has a significant impact on costs as work materials (cranes) and labor spend a significant amount of time assembling the shuttering.
  • the invention is based on the object to improve an enclosure or a shuttering with simple means to the effect that the casing is easier to assemble, at the same time a sufficient sound insulation is to be achieved.
  • the object is achieved in that the casing is formed from a mixed material, preferably from a composite material, more preferably from a fiber composite material.
  • the invention is based on the finding that today materials are known which are considerably lighter than steel, so that their handling is much easier compared to steel, wherein the mechanical properties of both materials are approximately equal.
  • Structure-borne noise in the sense of the invention is that sound which propagates in a solid body, for example up to a rotating, free shaft and / or a coupling of a power generation plant or the casing of the moving components.
  • the structure-borne sound is converted into airborne sound, and only then becomes human hearing perceived.
  • steel cladding as a worker protection device, the resulting sound is not attenuated. In contrast, this is advantageously achieved by means of the use of the mixed material or of the fiber composite material for the casing.
  • the mixed material or the fiber composite material can be formed, for example, from glass fibers, carbon fibers, ceramic fibers, aramid fibers, boron fibers, natural fibers or nylon fibers, for example, which are embedded in a suitable matrix.
  • the production methods for this purpose may e.g. Laminating, filament winding, prepreg technology, resin injection, vacuum injection or fiber spraying, to name just a few exemplary manufacturing methods.
  • the casing is formed from elements which are connectable in the mounting position. It is conceivable that the casing is formed from two half-elements, which can be connected to one another by means of flange connections. To maintain the housed components, only the respective flange connection has to be loosened.
  • the casing can also be formed from a single element, which are held in the mounting position via flange on suitable fastening devices. The element could then be seen in cross section having a semicircular configuration.
  • more than two elements are provided to form the casing, which surround the rotating or moving component in the mounting position.
  • the advantageous embodiment of the casing of the preferred fiber composite material thus causes a dual function.
  • the casing serves as a safety device, which is the moving component or rotating component einhaust, so that successful intervention or the like is prevented by people in the hazardous area.
  • the casing of the fiber composite material has very good damping properties, so that a reduction of transmitted via the casing to the environment structure-borne sound is achieved without additional damping measures must be provided.
  • the casing of the fiber composite material on easier handling, which has a positive effect on the assembly time and thus on the installation costs.
  • FIG. 1 shows an enclosure 1 of moving components 2, which has a shuttering 3.
  • the casing 3 is formed from a mixed material, preferably a composite material, more preferably from a fiber composite material.
  • the moving component 2 is designed in the illustrated embodiment as a rotating, free shaft 4 of a power plant.
  • the rotating, free shaft 4 has two partial shaft strands 6, 7, which are connected to each other by means of a coupling 8.
  • the shuttering 3 houses the rotating shaft 4 with its coupling 8, and is each closed on the front side.
  • the respective partial shaft strands 6, 7 protrude beyond the frontal closure 9 out of the housing 1. It is conceivable, of course, that the partial wave strands 6, 7 are completely housed.
  • the shuttering 3 is formed by way of example from two elements 11, 12, which are connected to each other by means of flange 13 in the mounting position ( Figure 2).
  • the two elements 11 and 12 are seen in cross section ( Figure 2) designed shell-like.
  • the two elements 11 and 12 each have flanges 14 at their free ends.
  • the flanges 14 can be formed directly in the manufacture of the elements 11 and 12, or be subsequently connected with suitable types of connections with free ends.
  • connections other than the exemplified flange connection 13 may be provided.
  • the free ends can be glued together.
  • the two elements 11 and 12 are of course detachable from each other.
  • Each end wall 16 ( Figure 1) are arranged on the front side, wherein the shuttering 3 is supported in the mounting position by means of suitable means on the rotating shaft 4.
  • the use of a pivot bearing in the region of the end walls 16 is possible here.
  • the end walls 16 correspond to the closure 9 mentioned above.
  • the shuttering 3 is also formed of two elements 17, 18, which are seen in cross-section but designed substantially quarter-circle-like ( Figure 3). At the free ends are in turn Flanges 14 are arranged so that the two elements 17, 18 are connectable both with each other and with existing receptacles in the area of the component 2 to be incorporated.
  • the example shown, quarter-circle-like design of the two elements 17 and 18 is not limited to this embodiment.
  • the configuration of the two elements 17 and 18 can have any suitable configuration when seen in cross-section.
  • the two elements 17 and 18 can also be made slightly s-shaped.
  • FIG. 4 shows a further, exemplary embodiment of the housing 1.
  • the housing 1 has in this embodiment, a single element 19 as a shuttering 3, which is seen in cross-section U-shaped with a base leg 21 and two mutually parallel U-legs 22 is executed. At the free ends of the U-legs 22 flanges 14 are arranged.
  • the formwork 3 shown by way of example in FIGS. 1 to 4 are particularly suitable for use on all moving components or rotating components which, for example, have to be housed for reasons of occupational safety. Due to the advantageous use of the fiber composite material to create the enclosure 1 or the shuttering 3 with its elements 11, 12; 17.18; In addition, sound insulation or a reduction of structure-borne noise transmitted via the shuttering 3 to the surroundings is achieved.
EP06022062A 2006-10-20 2006-10-20 Utilisation d'un matériau composite fibreux dans des cages pour la réduction d'émission acoustique dans leur environnement Withdrawn EP1914718A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06022062A EP1914718A1 (fr) 2006-10-20 2006-10-20 Utilisation d'un matériau composite fibreux dans des cages pour la réduction d'émission acoustique dans leur environnement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06022062A EP1914718A1 (fr) 2006-10-20 2006-10-20 Utilisation d'un matériau composite fibreux dans des cages pour la réduction d'émission acoustique dans leur environnement

Publications (1)

Publication Number Publication Date
EP1914718A1 true EP1914718A1 (fr) 2008-04-23

Family

ID=38335718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06022062A Withdrawn EP1914718A1 (fr) 2006-10-20 2006-10-20 Utilisation d'un matériau composite fibreux dans des cages pour la réduction d'émission acoustique dans leur environnement

Country Status (1)

Country Link
EP (1) EP1914718A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB895566A (en) * 1960-12-16 1962-05-02 Isel Isaac Solzman Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound
US5365901A (en) * 1993-11-15 1994-11-22 Freudenberg-Nok General Partnership Low creep flange and engine cover assembly
EP1422401A2 (fr) * 2002-11-25 2004-05-26 Mann + Hummel GmbH Turbocompresseur à air secondaire
EP1498598A1 (fr) * 2003-07-15 2005-01-19 Carcoustics Tech Center GmbH Cage en plastique qui rediut le bruit pour moteur à combustion interne ou boite de vitesse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB895566A (en) * 1960-12-16 1962-05-02 Isel Isaac Solzman Sound absorbent casing for apparatus, such as an extractor fan, which in operation generates sound
US5365901A (en) * 1993-11-15 1994-11-22 Freudenberg-Nok General Partnership Low creep flange and engine cover assembly
EP1422401A2 (fr) * 2002-11-25 2004-05-26 Mann + Hummel GmbH Turbocompresseur à air secondaire
EP1498598A1 (fr) * 2003-07-15 2005-01-19 Carcoustics Tech Center GmbH Cage en plastique qui rediut le bruit pour moteur à combustion interne ou boite de vitesse

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