KR102027533B1 - Flame-Retarding Structure and Method Producing Flame Retarding Structure - Google Patents

Abstract

Even if a flame-retardant paint is applied to the outer surface of the structure, a flame retardant structure is provided that allows for fatigue crack inspection inside the structure. The flameproof structure is installed on the outer surface of the structure, the mold having a moving space for moving the endoscope inside the contact with the structure, and is applied to cover the structure and the mold, foamed at a temperature above the reference temperature and flame retardant And a fireproof paint forming a foam, and a through part communicating with the moving space and the outside through the fireproof paint and the mold.

Description

Flame-Retarding Structure and Method Producing Flame Retarding Structure

The present invention relates to a flame retardant structure, and more particularly, to a flame retardant structure that can periodically inspect the fatigue crack generated in the weak part of the structure.

Generally, there are active fire protection and passive fire protection to protect a structure such as a marine or land structure in case of fire. Active fire protection means a system for detecting and extinguishing a fire. Passive fire protection means that fire protection is applied to a structure such as a wall or a floor to prevent the structure from being deformed or collapsed by a fire.

Passive fire protection is constructed to prevent the rapid deterioration of the strength of major structures in the event of fires in marine and terrestrial structures, to ensure evacuation time, to prevent the spread of fire and to protect people and property. In other words, as a construction to withhold the direct transmission of the flame for a certain time, it is constructed around the main structure of the structure rather than the construction of the entire structure.

However, when the fire protection paint is applied to the outer circumferential surface of the structure in the same way as the passive fire protection, a problem occurs that the inspection of the fatigue crack due to the fatigue of the structure is virtually impossible. In general, prefabricated fireproof coating is applied to the fragile parts on the outside of the structure, but prefabricated fireproof paint is made of a mold, which is very expensive and difficult to apply because it takes a long time to manufacture. It was.

Therefore, even if a fireproof paint is applied to the outside of the structure, a PFP structure having a structure capable of inspecting the crack state inside the structure was required.

Japanese Laid-Open Patent Publication No. 2013-252522 (2013.12.19.)

The technical problem to be achieved by the present invention is to solve this problem, to provide a flame retardant structure that can periodically inspect the cracks occurring in the weak part of the structure.

Another technical problem to be achieved by the present invention is to solve this problem, to provide a method of manufacturing a flame retardant structure that can periodically inspect the fatigue crack generated in the weak part of the structure.

Technical problem of the present invention is not limited to the above-mentioned problems, another technical problem that is not mentioned will be clearly understood by those skilled in the art from the following description.

Fire resistant structure according to the technical problem of the present invention, the structure is installed on the outer surface of the structure, the mold is formed so as to cover the structure and the mold, a mold having a moving space to move the endoscope inside the contact with the structure, And a fireproof paint foamed above a reference temperature to form a flame retardant foam, and a through part communicating with the moving space and the outside through the fireproof paint and the mold.

The mold may be formed in a ring shape surrounding the structure and to which the moving space is connected.

It may further include a tubular extension tube extending from the mold and in communication with the moving space.

The flame retardant foam may foam at the reference temperature to seal off the penetration.

It may further include a sealing cap for sealing the through part.

According to another aspect of the present invention, there is provided a method of manufacturing a flameproof structure, the method comprising: (a) installing a mold having a moving space through which an endoscope moves on an inner surface of the structure and contacting the structure; (B) applying a fire retardant paint forming a foam to cover the structure and the mold; and (c) forming a through part communicating with the moving space and the outside through the fire retardant paint and the mold. Include.

The mold may further include a tubular extension tube communicating with the moving space and extending outwardly, in step (c), after the step (b), the extension tube may be removed to form the through part.

After the step (c), may further comprise the step (d) of forming a sealing cap for sealing the through part.

In the flame resistant structure according to the present invention, even if a fire protection paint is applied to the outer circumferential surface of the structure against fire and high temperature, the outer circumferential surface of the structure can be observed, and fatigue cracks can be accurately and easily inspected on the outer circumferential surface of the structure. There is a characteristic. In addition, there is a feature that is excellent in structural stability, such as to prevent a large-scale accidents such as the collapse of the structure due to the flame caused by deterioration of the material of the structure.

In addition, there is an advantage that the production is simple, not only shorten the production time but also easy to work, saving the production cost.

1 is a perspective view of a flameproof structure according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1.
3 to 6 is a view showing a manufacturing method of the flameproof structure of the present invention.
7 is a perspective view showing an example of use of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms, and only the embodiments are provided to make the disclosure of the present invention complete and have ordinary skill in the art to which the present invention pertains. It is provided to fully inform the scope of the invention, and the invention is only defined by the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a flame retardant structure and a method of manufacturing the flame retardant structure according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7. First, the flame retardant structure will be described in detail, and then the description will be made in such a manner as to describe the method of manufacturing the flame retardant structure in detail.

Flameproof structure 1 according to an embodiment of the present invention can determine whether the fatigue crack (fatigue crack) of the outer peripheral surface of the structure 10, even if the fire-resistant paint 30 is applied to the outer surface of the structure 10, such as a pipe It is a passive fire protection (PFP) structure.

Hereinafter, the structure of the flameproof structure will be described in detail with reference to FIGS. 1 and 2.

1 is a perspective view of a flame retardant structure 1 according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line AA '.

1 and 2, the flame retardant structure 1 according to an embodiment of the present invention is installed on the structure 10, the outer surface of the structure 10 and the endoscope in contact with the structure 10 (Fig. e) is applied to cover the mold 20, the structure 10 and the mold 20, the moving space 21 is moved, the fire protection paint 30 is foamed above the reference temperature to form a flame-retardant foam foam The penetrating portion 23 penetrates the fireproof paint 30 and the mold 20 and communicates with the moving space 21 and the outside.

The structure 10 is a kind of structure such as a pipe, beam, skeleton, etc. The structure 10 in the specification of the present invention may be a kind of pipe formed of a hollow thin tube having a cylindrical shape. . The structure 10 may be a structure that is formed in a pipe shape and used to produce / refine and store or transport oil or gas, but is not limited thereto and may mean a structure having various materials and shapes. As shown in FIG. 1, a mold 20 may be disposed on a portion of an outer circumferential surface of the structure 10 formed in a Y shape.

The mold 20 is to form a space spaced apart from the structure 10 on the outer circumferential surface of the structure 10, and may be formed as a ring-shaped tube surrounding the outer circumferential surface of the structure 10. The mold 20 may be formed by separating a plurality of tubes having a round and hollow donut-like shape around the body and surrounding the outer circumferential surface of the structure 10 by the flange 24. The mold 20 may be formed as a single ring-shaped tube, but may be separated into a plurality and coupled to the flange 24 so that the mold 20 may be easily adhered to the outer circumferential surface of the structure 10. The mold 20 having such a shape is formed to have a diameter larger than the diameter of the structure 10 and is spaced apart from the structure 10 at a predetermined interval when the mold 20 is disposed to surround the outer circumferential surface of the structure 10. The moving space 21 may be formed. That is, the moving space 21 means a closed empty space surrounded by the outer peripheral surface of the structure 10 and the inner peripheral surface of the mold 20, which is used as a moving passage through which the endoscope e moves. This will be described later in detail.

Subsequently, the mold 20 may include an extension tube 22 that forms at least a portion of the outer surface without being connected and forms a through portion 23 connecting the moving space to the outside.

The extension tube 22 may be formed in a tubular shape extending from the mold 20 as part of the mold 20 to communicate with the moving space 21. That is, the extension tube 22 is a refraction portion in which a part of the mold 20 is deflected outward at least once. The extension tube 22 is refracted toward the outside so that the inner space of the extension tube 22 communicates with the moving space 21. Can be formed. 1 is formed in a cylindrical shape penetrating a portion of the mold 20 of the extension tube 22 formed as shown in FIG. 1, but is not limited thereto, and forms a through part 23 communicating with the moving space 21. can do. The extension tube 22 formed as described above may be an entrance through which the endoscope e enters, and the endoscope e is inserted through the inner space of the extension tube 22 and along the moving space 21 inside the mold 20. The outer surface of the structure 10 can be observed while moving. This will be described in detail with reference to FIGS. 3 to 8.

The mold 20 and the extension tube 22 in FIG. 1 are formed to surround only a portion of the structure 10, but are not limited thereto. A plurality of molds 20 may be formed at positions where cracks may occur in the structure 10. ) May be arranged to form a plurality of extension tubes 22 and a moving space 21 to inspect the outer circumferential surface of the structure 10. The penetrating portion 23 formed in the extension tube 22 is penetrated so as to be exposed to the outside, and when the inspection of the structure 10 is not carried out, the sealing cap 40 for sealing the penetrating portion 23 (FIG. 6). 40 may be inserted into the penetrating portion 23 to seal the penetrating portion 23.

On the other hand, the fire protection paint 30 may be applied to the outer peripheral surface of the structure 10 and the mold 20.

The fire protection paint 30 is a fire prevention member which prevents the strength reduction of the structure 10 when it contacts a flame, and consists of a flame-retardant material. The fire protection paint 30 may be applied to cover the outer circumferential surfaces of the mold 20 and the structure 10 by foaming at a reference temperature or higher to form a flame retardant foam. Specifically, the fire protection paint 30 may be formed of a material which forms a non-combustible foamed carbonized layer (char) at a high temperature. For example, styrene resin, urethane resin, phenol resin, glass, ceramic, It may be made of a flame retardant material such as rock wool and gypsum. Fire-retardant paint 30 made of such properties can exert an oxygen blocking effect while reacting with the flame or heat foaming in the form of carbide, and is disposed on the outer peripheral surface of the structure 10 and the mold 20 to prevent the penetration of the flame in the event of fire. It can be blocked to prevent the transfer of fire. In addition, the fire retardant paint 30 expands while forming a flame retardant foam at a high temperature to block the through part 23 formed by the extension pipe 22 while forming a heat insulation layer, and the flame moves through the through part 23. The transition to the space 21 can be prevented. In addition, a flame retardant foam is applied to the outer circumferential surface of the sealing cap 40 inserted into the through part 23 to prevent a flame from being transferred into the moving space 21.

Hereinafter, a method of manufacturing the flame retardant structure of the present invention will be described with reference to FIGS. 3 to 6.

3 to 6 is a view showing a manufacturing method of the flameproof structure of the present invention.

First, referring to FIG. 3, a diagram illustrating the installation of the mold 20 (step a) is illustrated. A mold 20 having a shape capable of sealing a part of the structure 10 to form the moving space 21 is installed on the outer circumferential surface of the structure 10. That is, the movable space in which the mold 20 is installed on the outer circumferential surface of the structure 10 and the endoscope e moves inside the contact surface of the structure 10 on the outer circumferential surface of the structure 10 is moved. 21 can be formed. The mold 20 may be installed to surround a portion of the structure 10, and an extension tube 22 may be formed to form a through portion 23 through which at least a portion passes through the moving space 21 and the outside.

After the mold 20 is installed on the outer circumferential surface of the structure 10, as shown in FIG. 4, the fire protection paint 30 is applied to the outer circumferential surfaces of the structure 10 and the mold 20 (step b). As shown in FIG. 4, the fireproof paint 30 is applied to cover the outer circumferential surfaces of the structure 10 and the mold 20, wherein the fireproof paint 30 has a thickness that does not protrude to the outside of the extension pipe 22. The coating is applied so as not to block the inlet of the extension tube 22 into which the endoscope e is inserted. The fire protection paint 30 applied to the outer circumferential surface of the structure 10 and the mold 20 is foamed at a reference temperature or higher to form a flame retardant foam, and the flame-retardant foam is made of a material forming a carbonized layer, It serves to protect the structure (10). In addition, when the fire retardant paint 30 is in contact with the high temperature to form a flame-retardant foam, the foam foam can block the inlet of the extension tube 20 to prevent the flame from entering the interior of the extension tube (22). . When contacting the flame without removing the extension pipe 22 formed on the flameproof structure 1, the fire protection paint 30 may foam to cover the extension pipe 22 to close the through part 23, and the extension pipe 22 When in contact with the flame in the removed state, it is characterized in that the through portion 23 can be effectively blocked because it blocks the through portion 23 while inflating in the fire protection paint (30).

Subsequently, a penetrating portion 23 is formed through the fire protection paint 30 and the mold 20 to communicate the moving space 21 with the outside (step c). As shown in FIG. 5, since the extension tube 22 formed to expose the through hole is exposed to the outside, the extension tube 22 is formed to be separated from the mold 20. After the fire protection paint 30 is hardened, the extension tube 22 is removed. The through part 23 in which the moving space 21 communicates from the outside may be formed. In this specification, as shown in Figure 5, including the step of removing the extension tube 22, but is not limited to this, the endoscope (e) may be inserted through the space inside the extension tube without removing the extension tube 22. .

After the penetrating portion 23 is formed, the endoscope e is inserted through the penetrating portion 23 to observe the outer surface of the structure 10 so that fatigue cracks are generated on the outer surface of the structure 10 whenever necessary. When the outer peripheral surface of the structure 10 is not inspected through the through part 23, the through part 23 may be sealed using the sealing cap 40 as shown in FIG. 6. When not using the penetrating portion 23, by sealing the penetrating portion 23 using the sealing cap 40, dust, rain water and the like flows into the penetrating portion 23 to the moving space 21 to the structure Cracks can be prevented from occurring in (10), and stability can be ensured.

Hereinafter, a use example of the flameproof structure of the present invention will be described with reference to FIG. 7.

7 is a perspective view showing an example of use of the flame retardant structure of the present invention.

Referring to FIG. 7, a perspective view illustrating a part of a flameproof structure in which a mold 20 is disposed in the Y-shaped branch pipe of FIG. 1. As shown in FIG. 7, the flameproof structure 1 of the present invention may insert the endoscope e through the penetrating portion 23. The endoscope e inserted through the through part 23 can observe the outer surface of the structure 10 while moving along the moving space 21, and by checking the outer peripheral surface of the structure 10 with the endoscope e The occurrence of fatigue cracks can be examined. As described above, even when the fire retardant paint 30 is applied to the outer circumferential surface of the structure 10, the flameproof structure 1 can easily observe the outer circumferential surface of the structure 10 in which cracks frequently occur, thereby improving the stability of the structure 10. Due to the fire-resistant paint 30 applied to the outer circumferential surface of the structure 10, it is possible to prevent deterioration of the material of the structure 10 due to the high temperature when a fire occurs, thereby causing the structure 10 to collapse. can do.

In addition, the flame retardant structure 1 observes the outer circumferential surface of the structure 10 to which the fire retardant paint 30 is applied by simply installing the mold 20 before applying the fire retardant paint 30 to the outer circumferential surface of the structure 10. It is possible to improve the stability from fire and to improve the stability as the structure 10. In addition, even when the through portion 23 is formed to observe the outer circumferential surface of the structure 10, when the through portion 23 is not used, the through portion 23 is sealed by the sealing cap 40 to prevent external dirt. Phenomenon that is injected into the moving space 21 can be prevented.

Such a flameproof structure (1) is not only easy to manufacture, but also shorten the manufacturing time, has the excellent advantage that the cost is reduced, as well as the flameproof structure (1) can accurately and easily perform the crack numerical analysis of the structure (10) There are features that can be.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. I can understand. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

1: Fire Retardant Structure 10: Structure
20: mold 21: moving space
22: extension tube 23: through part
24: Flange 30: Fire protection paint
40: sealing cap e: endoscope

Claims (8)

Structures;
A mold installed on an outer surface of the structure and having a moving space in which an endoscope moves in contact with the structure;
A fireproof paint applied to cover the structure and the mold and foamed at a reference temperature or higher to form a flame retardant foam; And
Flame-proof structure that penetrates through the flame-retardant paint and the mold, the through-hole communicating with the moving space and the outside. The method of claim 1,
The mold is flame resistant structure is formed in a ring shape surrounding the structure and the moving space is connected. The method of claim 2,
Flame-proof structure further comprising a tubular extension tube extending from the mold and in communication with the moving space. The method of claim 1,
The flame retardant foam is foamed at the reference temperature to the flame-resistant structure to seal the through (封鎖). The method of claim 1,
Flame retardant structure further comprising a sealing cap for sealing the through part. (A) installing a mold having a moving space through which an endoscope moves on an inner surface of the structure in contact with the structure;
(B) applying a fire protection paint which foams above a reference temperature to form a flame retardant foam, so as to cover the structure and the mold; And
And (c) forming a through part communicating with the moving space and the outside by passing through the fire protection paint and the mold. The method of claim 6,
The mold further includes a tubular extension tube communicating with the moving space and extending outwardly,
In the step (c), after the step (b) to remove the extension tube to form the flame-proof structure manufacturing method. The method of claim 6,
After the step (c), the method of manufacturing a flame resistant structure further comprising the step of (d) forming a closed cap for sealing the through part.

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