KR20160052231A - Noise reduction member based on shape memory alloy and Method for installing the same - Google Patents

Noise reduction member based on shape memory alloy and Method for installing the same Download PDF

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Publication number
KR20160052231A
KR20160052231A KR1020140152249A KR20140152249A KR20160052231A KR 20160052231 A KR20160052231 A KR 20160052231A KR 1020140152249 A KR1020140152249 A KR 1020140152249A KR 20140152249 A KR20140152249 A KR 20140152249A KR 20160052231 A KR20160052231 A KR 20160052231A
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KR
South Korea
Prior art keywords
shape memory
memory alloy
pipe
soundproofing material
piping
Prior art date
Application number
KR1020140152249A
Other languages
Korean (ko)
Inventor
김정해
고병준
Original Assignee
대우조선해양 주식회사
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.)
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Priority to KR1020140152249A priority Critical patent/KR20160052231A/en
Publication of KR20160052231A publication Critical patent/KR20160052231A/en

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    • 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
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3214—Architectures, e.g. special constructional features or arrangements of features
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3223—Materials, e.g. special compositions or gases

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Pipe Accessories (AREA)

Abstract

According to an aspect of the present invention, there is provided a soundproofing material provided on a piping (10) to reduce noise, comprising: a structure (20) formed in the form of a mesh using a shape memory alloy; And a sound absorbing material (30) bonded to the structure (20) in a concentric manner and having stretchability and porosity.
Accordingly, it is possible to easily and accurately install the soundproofing material at a desired position without detaching or deforming the piping by utilizing the stent technology using the shape memory alloy, and maintaining the soundproofing material at a position set in a tightly supported state after the installation, To improve reliability and durability.

Description

TECHNICAL FIELD [0001] The present invention relates to a soundproof material based on a shape memory alloy and a method of installing the same.

More particularly, the present invention relates to a soundproofing material based on a shape memory alloy, which performs a function by returning to a desired position on a piping in a reduced state and returning to an operating temperature, and a method of installing the soundproofing material .

Generally, in a piping system for soundproofing in a ship's exhaust system, a part of the piping is opened and an operator enters the inside of the piping and installs a soundproofing material or a mechanical force is applied to the soundproofing material.

However, as the flow path cross-sectional area of the piping is small or the path is complicated, it is inconvenient to install the soundproofing material inside, which makes it difficult to install the piping in the exact position required and also causes a problem of airtightness deterioration and structural deformation due to opening of the piping.

Accordingly, in the field of medicine, a method of utilizing a shape memory alloy for soundproofing of a pipeline is being studied considering that a stent is applied to expand a blood vessel of a human body. As related prior art documents, Korean Patent Laid-Open Publication No. 1994-0019972 (Prior Art 1), Korean Patent Registration No. 0411709 (Prior Art 2), and the like can be referred to.

According to the prior art document 1, the metal of the high-carbon cast iron and the copper-manganese based alloy or the nickel-titanium based shape memory alloy having the non-damping capability of 10% or more is in contact with the crushing rod, A circular ring is formed to minimize noise.

In the prior art document 2, a shape memory alloy fitting having an inner diameter larger than the outer diameter of the pipe or an inner diameter of the shape memory alloy fitting having an outer diameter smaller than the inner diameter of the pipe is provided outside or inside the pipe connecting portion, At the same time, they are expanded or closed. Accordingly, it is expected that the cost is reduced by connecting pipes without loss of shape memory performance due to pipe tolerance.

However, since the prior art 1 described above is a method of attenuating noise caused by vibration by being installed in a mechanical frictional portion, it is difficult to apply it to piping. In the prior art 2, since a fitting to be coupled to the outside of the piping is targeted, It is not enough to apply it to the installation of

1. Korean Patent Laid-Open Publication No. 1994-0019972 "Method of attenuating noise of rock drill and its apparatus" (Published on September 15, 1994) 2. Korean Patent Publication No. 0411709 entitled "Pipe Connection Method Using Shape Memory Alloy" (Open date: Nov. 18, 2002)

It is an object of the present invention to overcome the above-mentioned problems of the prior art by providing a shape memory alloy which minimizes structural deformation of piping and improves ease of operation and accuracy by installing a shape memory alloy- An alloy-based soundproofing material and a method of installing the same.

To achieve the above object, according to one aspect of the present invention, there is provided a soundproofing material which is installed in a pipe and reduces noise, comprising: a structure formed in the form of a mesh using a shape memory alloy; And a sound absorbing material bonded to the structure in a concentric manner and having stretchability and porosity.

According to the detailed configuration of the present invention, the structure includes at least one of protrusions formed on both ends and protrusions formed on the surface.

According to the detailed configuration of the present invention, the structure is characterized by using a shape memory alloy that matches the operating temperature with the normal temperature of the fluid applied to the piping.

At this time, the structure is characterized by using an iron-based shape memory alloy.

According to a detailed configuration of the present invention, the sound-absorbing material is attached to at least one of an outer peripheral surface and an inner peripheral surface of the structure.

According to another aspect of the present invention, there is provided a method for installing a soundproofing material according to claim 1 on a pipe, comprising the steps of: (a) pressurizing and uniformly reducing a soundproofing material formed by integrating a structure and a sound absorbing material; (b) moving the sound insulation material to the traction body inside the pipe; And (c) returning the soundproofing material to an initial shape at a predetermined position.

According to the detailed configuration of the present invention, the steps (b) and (c) are characterized in that the sound insulation material induces a volume expansion at a predetermined position of the pipe.

At this time, the step (c) is characterized in that it is heated from the outside while being temporarily supported in the pipe (10) and expanded.

As described above, according to the present invention, it is possible to easily and accurately install the sound insulation material at a desired position without separating or deforming the pipe by utilizing the stent technology using the shape memory alloy.

In addition, after installing the soundproofing material, it maintains the position set in the tight support state, thereby enhancing the reliability and durability of realizing the soundproof performance predicted over a long period of time.

Brief Description of the Drawings Fig. 1 is a configuration diagram showing a soundproofing material according to the present invention in an installed state
2 is a schematic view showing various embodiments of a soundproofing material according to the present invention.
3 is a structural view showing a method for installing a soundproofing material according to the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

According to an aspect of the present invention, there is proposed a soundproofing material that is installed in the piping 10 to reduce noise. The piping 10 is intended to discharge a high temperature combustion gas generated from an engine mounted in an engine room of a ship, but is not limited thereto. The sound insulating material adheres to the inner surface of the pipe 10 to reduce the noise propagated to the outside.

The structure 20 according to the present invention is characterized in that it is formed in the form of a mesh using a shape memory alloy. The structure 20 is determined so as to coincide with the channel shape of the pipe 10 and may be formed into a generally circular cross section but a square cross section. The mesh of the mesh is determined in consideration of the diameter of the pipe 10, the physical properties of the shape memory alloy, and the like.

The sound absorbing material 30 according to the present invention has elasticity and porosity and is bonded to the structure 20 in a coaxial manner. The sound absorbing material 30 must be shrunk in the process of installing the pipe 20 together with the structure 20 and return to the initial dimensions after completion of the installation. The porosity of the sound absorbing material 30 should produce the basic performance of absorbing and decompressing noise and maintain such performance even after returning from shrinkage.

According to the detailed configuration of the present invention, the structure 20 includes at least one of jaws 22 and 24 formed at both ends and protruding pieces 26 formed on the surface. The most common method of joining the structure 20 and the sound absorbing material 30 is to use an adhesive, but it is difficult to maintain a high bonding strength for a long period of time because of restrictions depending on the kind of fluid applied to the pipe 10.

2 (a) is a form of housing the sound absorbing material 30 on the inner surface of the structure 20, and supports the sound absorbing material 30 by forming inward tangs 22 inwardly bending both ends of the structure 20. 2 (b) is a form of housing the sound absorbing material 30 on the outer surface, and an outward tuck 24 is formed by outwardly bending both ends of the structure 20 to support the sound absorbing material 30. 2C illustrates a configuration in which a plurality of protruding pieces 26 are formed on the inner surface or the outer surface of the structure 20 instead of the inward protrusions 22 and the outward protrusions 24.

Of course, the inward protuberance 22, outward protuberance 24, and protuberance 26 of the structure 20 are not limited to any one, and may be applied in combination.

According to the detailed configuration of the present invention, the structure 20 uses a shape memory alloy that matches the operating temperature with the normal temperature of the fluid applied to the pipe 10. That is, it is set in accordance with the operating temperature for returning the structure 20 to the original state according to application of the exhaust gas and the cooling water.

At this time, the structure 20 is characterized by using an iron-based shape memory alloy. Since the shape memory alloy is expensive compared to other materials required for the general piping 10, an iron-based alloy is selected in consideration of economical efficiency. The operating temperature of the shape memory alloy varies depending on the constituent components, but is generally higher as it goes down to room temperature.

In the case of applying the soundproofing material to the exhaust gas piping 10 as an example of the present invention, the operating temperature of the shape memory alloy can be set within the range of 200 to 300 DEG C, which is the normal temperature of the exhaust gas or slightly lower. If the fluid pipe 10 having a lower temperature is used, the configuration of the shape memory alloy can be adopted in which the operating temperature is lowered accordingly.

According to the detailed configuration of the present invention, the sound absorbing material 30 is attached to at least one of the outer circumferential surface and the inner circumferential surface of the structure 20. [ Which is associated with the inward jaw 22 and the outward jaw 24 as described with reference to Fig. Of course, it is also possible to attach the sound absorbing material 30 to the outer and inner peripheral surfaces of the sound absorbing material 30.

According to another aspect of the present invention, a method of installing the soundproofing material of claim 1 on the piping 10 is proposed. The detailed structure of the structure 20 and the sound absorbing material 30 forming the sound insulating material is the same category as described above.

Step (a) of the present invention is a process of uniformly reducing the sound insulation material composed of the structure 20 and the sound absorbing material 30 integrally. The shrinking of the soundproofing material is limited in the radial direction, and the shrinking in the longitudinal direction is limited in accordance with the pipe 10. It is preferable to use a separate jig (not shown) for uniform pressurization of the sound insulating material. In FIG. 3, reference numerals 20 'and 30' denote a reduced state of the soundproofing material.

The step (b) of the present invention proceeds in the process of moving the soundproofing material from the inside of the pipe 10 to the sleeves 15. The slewing body 15 may be provided with a ventilation duct for electric wire laying, but may also be provided with a built-in robot depending on the type of the duct 10. In any case, the operation is performed while recognizing the position where the soundproofing material reaches from the outside.

The step (c) of the present invention is completed by returning the soundproofing material from the set position to the initial shape. The soundproofing material of the present invention based on the shape memory alloy is restored from the shrink state to the operating temperature condition at the set position. Of course, the performance of the structure 20 and the sound absorbing material 30 is maintained in this process.

According to the detailed configuration of the present invention, the steps (b) and (c) are characterized in that the sound insulation material induces a volume expansion at a predetermined position of the pipe 10. The volume expansion of a soundproofing material is meant to include axial and radial expansion. The volume of the sound absorbing material 30 is also expanded due to the volume expansion of the structure 20 which is the skeleton of the sound insulating material.

At this time, the step (c) is characterized in that it is heated from the outside while being temporarily supported in the pipe (10) and expanded. 1 (a), hot air is blown into the inside of the pipe 10 in a state where the sound insulating material coated with the adhesive is applied or the position is fixed by the string body 15, . 1 (b), a more compact holding force can be maintained when a separate receiving portion 12 is provided in the pipe 10. The accommodating portion 12 is installed so as to have an expanded structure as compared with the pipe 10.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: piping 12:
15: needle body 20: structure
22: inward chin 24: outward chin
26: projecting piece 30: sound absorbing body

Claims (8)

A soundproofing material installed in a piping (10) for reducing noise, comprising:
A structure 20 formed in the form of a mesh using a shape memory alloy; And
And a sound absorbing material (30) bonded to the structure (20) in a concentric manner and having stretchability and porosity. The method according to claim 1,
Wherein the structure (20) comprises at least one of a jaw (22) (24) formed at both ends and a projection piece (26) formed on the surface. The method according to claim 1,
Characterized in that the structure (20) uses a shape memory alloy that matches the working temperature to the normal temperature of the fluid applied to the pipe (10). The method of claim 3,
The shape memory alloy-based soundproofing material according to claim 1, wherein the structure (20) is an iron-based shape memory alloy. The method according to claim 1,
The sound absorbing material (30) is attached to at least one of an outer circumferential surface and an inner circumferential surface of the structure (20). A method for installing the soundproofing material of claim 1 in a pipe (10), comprising:
(a) pressurizing and uniformly reducing a sound insulating material formed by integrating the structure 20 and the sound absorbing material 30;
(b) moving the sound insulation material to the sleeves 15 in the piping 10; And
(c) returning the soundproofing material to an initial shape at a predetermined position. The method of claim 6,
Wherein the step (b) and (c) induce a volume expansion of the sound insulation material at a predetermined position of the pipe (10). The method of claim 7,
Wherein the step (c) is performed while being temporarily supported on the pipe (10) and is heated from outside to expand the shape of the soundproofing material.
KR1020140152249A 2014-11-04 2014-11-04 Noise reduction member based on shape memory alloy and Method for installing the same KR20160052231A (en)

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KR1020140152249A KR20160052231A (en) 2014-11-04 2014-11-04 Noise reduction member based on shape memory alloy and Method for installing the same

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Application Number Priority Date Filing Date Title
KR1020140152249A KR20160052231A (en) 2014-11-04 2014-11-04 Noise reduction member based on shape memory alloy and Method for installing the same

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KR20160052231A true KR20160052231A (en) 2016-05-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116962945A (en) * 2023-09-20 2023-10-27 共达电声股份有限公司 Sound absorption packaging assembly and loudspeaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116962945A (en) * 2023-09-20 2023-10-27 共达电声股份有限公司 Sound absorption packaging assembly and loudspeaker
CN116962945B (en) * 2023-09-20 2023-12-08 共达电声股份有限公司 Sound absorption packaging assembly and loudspeaker

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