JPH08233192A - Split type sound insulation and heat insulation device - Google Patents

Abstract

PURPOSE: To provide the split type sound insulation and heat insulation device which is excellent in a heat insulating effect, and can exhibit both a sound insulating effect and a radiation exposure abatement effect at the same time when heat is insulated. CONSTITUTION: Fibrous insulators 2 in a felt form and lead sheet members 3 are alternately filled in a laminated form in the insides of metallic box bodies A1 through A6 which are divided in plural numbers, in such a way that a pump 1 which is a heat insulated body, can be shielded, and box walls (a) faced outside are formed into damping wall sections each of which is provided with a high polymer visco elastic layer such as rubber and the like. A sound insulating effect for absorbing noise produced by the pump 1 can be obtained by the outside damping wall sections of the metallic box bodies, and thereby both functions of a heat insulating effect by the fibrous insulators and the lead sheet members which are filled in a laminated form, and a sound insulating effect can be obtained. In addition to that, a radiation exposure abatement effect by the lead sheet members 3 can thereby be expected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a nuclear power plant,
Use of heat supply facilities that generate noise in thermal power plants, petrochemical plants, food chemical plants, semiconductor manufacturing plants, etc., especially pumps, valves, blowers, ducts and pipes that are frequently attached and detached during periodic inspections, etc. The improvement of a split type soundproofing / insulating device suitable for

[0002]

2. Description of the Related Art Conventionally, in various plants and the like, as a soundproof and heat insulating means for heat supply equipment (hereinafter referred to as a heat-insulated body) which is required to have both soundproofing and heat insulating functions, a heat insulating material is first attached and the outside There is a structure in which a sound insulation sheet is wrapped around and the outermost layer is sheet metal processed. Also, as a soundproof panel,
There is a structure in which a fibrous heat insulating material is used as a core material and sandwiched panels in which metal plates are attached to both surfaces thereof are assembled with screws.

However, the soundproof / heat-insulating structure having the above-mentioned structure has a problem that it takes a lot of time and dust is generated because it is cut and attached at the site to be attached or detached. Particularly, in a nuclear power plant, there is a problem in that, when it is removed or attached for a periodic inspection, the worker is more likely to be exposed to radiation in the time required for the inspection. In addition, the generation of dust poses problems of stable product quality and an increase in defective rate in food chemical plants and semiconductor manufacturing facilities. In addition, the removed soundproofing / heat insulating material is difficult to reuse, and there is a problem that a large amount of industrial waste is generated.

In order to solve the above-mentioned problems, a metal box body which is divided into a plurality of pieces so as to shield the body to be insulated is provided with an uneven or wrinkle-like aluminum finish. A split type (jacket type) heat insulating device is used in which a large number of heat insulating sheet materials made of metal foil such as foil and stainless steel foil are filled in a laminated manner.

The split type heat insulating device having the above-mentioned structure prevents the heat from being dissipated by the heat insulating sheet material such as aluminum foil and the heat insulating effect of the air layer between the sheet materials. Fulfills the function of. Further, the divided metal box body is provided with a hooking type locking tool such as a buckle so that the metal box bodies can be easily attached and detached in a short time at the time of maintenance and inspection. Moreover, since the heat insulating sheet material is filled in the box body, no dust is generated during the work and no waste is generated when the heat insulating sheet material is removed.

[0006]

Since the above-mentioned split type heat insulating device has a structure in which a heat insulating sheet material is simply stacked in a metal box body, the thermal conductivity is increased when the contact portion between the heat insulating sheet materials increases. There is a drawback that it becomes large and the heat insulation performance is deteriorated. In addition, the split type heat insulating device has a soundproofing (sound insulation,
Since it has almost no sound absorption function, it is not suitable for a heat-insulated body that requires sound insulation at the same time.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a split type soundproofing / insulating device that does not deteriorate the heat insulating effect and exhibits the sound insulating effect as well as the sound insulating effect. The main purpose is to do.

[0008]

SUMMARY OF THE INVENTION A split type soundproofing / insulating device according to the present invention comprises a fibrous heat insulating material and a lead sheet material inside a metal box body divided into a plurality of pieces so as to shield an object to be insulated. Of the box wall forming the metal box body, the box wall facing at least to the outside is a damping wall portion having a polymer viscoelastic layer, and the metal box body The gist is that it is configured by providing a locking tool that can connect the boxes to each other in a detachable manner.

[0009]

[Function] Of the box walls of the metal box that shields the body to be insulated,
Since the box wall facing outward is a damping wall portion, it absorbs the vibration energy due to the fixed transmitted sound generated from the insulated body and functions as a soundproof wall. On the other hand, the fibrous heat insulating material loaded in the metal box has a heat insulating function and a sound absorbing function, and the lead sheet material has a sound insulating function and a radiation exposure reducing function. Therefore, according to the configuration in which the metal box body is alternately filled with the fibrous heat insulating material and the lead sheet material, all of the heat insulating function, the sound insulating function, and the radiation exposure reducing function are exhibited.

[0010]

1 to 4 show an embodiment of the present invention. This example is an example in which the split type soundproof and heat insulating device of the present invention is applied to a pump that generates noise. FIG. 1 is an overall perspective view of a split type soundproofing / heat insulating device, FIG. 2 is a cross-sectional view of a state of being installed in a pump, FIG. 3 is an enlarged cross-sectional view of a metal box body portion indicated by an arrow A in FIG. 2, and FIG. FIG. 2 is an enlarged cross-sectional view taken along the arrow roll of FIG. 1.

1 to 4, A _{1 to} A ₆ are pumps 1
Is a metal box body divided into a plurality of parts so as to shield the main part of the metal box and having a required shape. Each metal box body is made of thin steel plate and is assembled by spot welding or rivet processing on six sides of the box body, and inside thereof is a fiber insulation material 2 in which fibers such as rock wool, glass wool, and ceramic fibers are formed in a felt shape. And lead sheet material 3 are alternately filled in a laminated form. Of the six surfaces of the metal box body, the box wall a that faces outward is a damping wall portion having a polymer viscoelastic layer 4 formed of, for example, rubber coating, as shown in FIGS. 3 and 4.

As shown in FIG. 4, the box wall at the end face where the divided metal boxes A _{1 to} A ₆ are joined is designed to minimize the gap created by joining to prevent leakage noise. An offset structure (stepped fitting structure) is further joined to the outer box wall a of one of the boxes, the strip 5 is fixed at one half in the width direction, and the other half of the strip is joined. It has a structure that closes the gap between the end faces.

Further, the divided metal box bodies A _{1 to} A ₆ are buckle type fasteners for connecting the joined metal box bodies to the required portions of the outer box wall a in a detachable manner. 6 is provided. A grip 7 for gripping is attached to the outer box wall a of the metal box body. In the drawings, 8 is a pipe communicating with the pump 1, 9 is a heat insulating material for the pipe, and 10 is a metal exterior plate provided on the outer peripheral surface of the heat insulating material.

According to the split type soundproofing / heat insulating device having the above-mentioned structure, among the box walls of the metal box bodies A _{1 to} A ₆ that shield the pump 1, the box wall a facing outward is the damping wall portion. This is the noise generated by the pump (fixed transmission sound).
It absorbs the vibration energy from the and functions as a soundproof wall. On the other hand, the fibrous heat insulating material filled in each metal box has a heat insulating function and a sound absorbing function, and the lead sheet material has a sound insulating function and a radiation exposure reducing function. Therefore, as a whole, the sound insulation function, the soundproofing function, and the radiation exposure reducing function are comprehensively exhibited.

The graph of FIG. 5 compares the soundproofing effect when the split type soundproofing / insulating device of the present invention constructed according to the material specifications shown in Table 1 below and the conventional product (split type heat insulating device) are respectively installed. It is shown.

[0016]

[Table 1]

[0017]

As described above in detail, according to the structure of the split type soundproof and heat insulating device of the present invention, the following effects can be obtained. (1) Since the outer box wall of the metal box body is the damping wall portion, it is possible to improve the soundproofing effect that can prevent the fixed transmitted sound. (2) By alternately filling the inside of the metal box body with the fibrous heat insulating material and the lead sheet material, both the heat insulating effect and the soundproofing function can be obtained. (3) When constructed in a nuclear power plant, since it has a detachable structure, and since lead sheet materials having a radiation shielding effect are laminated, an effect of reducing radiation exposure of workers can be expected. (4) Since the divided metal box body is detachable, the mechanical strength of the soundproof heat insulating body is improved, and it can be reused repeatedly, and in addition to its economic effect, the generation of industrial waste can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a split type soundproofing / heat insulating apparatus showing an embodiment of the present invention.

FIG. 2 is a sectional view when the device is applied to a pump.

FIG. 3 is an enlarged cross-sectional view of a portion indicated by an arrow A in FIG.

FIG. 4 is an enlarged cross-sectional view taken along the line of FIG.

FIG. 5 is a graph showing the soundproofing effect of the device of the present invention and the conventional product.

[Explanation of symbols]

1 Pump A _{1 to} A ₆ Split type metal box body 2 Fibrous heat insulating material 3 Lead sheet material 4 Polymer viscoelastic layer 5 Strip plate 6 Buckle type locking tool 7 Handle 8 Piping 9 Thermal insulation material 10 Metal exterior plate

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[Procedure amendment]

[Submission date] March 29, 1996

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

[Table 1]

Claims (1)

[Claims] 1. A metal box body, which is divided into a plurality of pieces so as to shield an object to be insulated, is filled with a fibrous heat insulating material and a lead sheet material alternately so as to form a laminate. Of the box walls to be formed, at least the box walls directed to the outside are formed as damping wall portions having a polymer viscoelastic layer, and the metal box body is provided with a locking tool capable of detachably connecting the box bodies to each other. A split-type soundproofing / heat insulating device characterized in that