KR101722442B1

KR101722442B1 - Blastwall structure

Info

Publication number: KR101722442B1
Application number: KR1020150084929A
Authority: KR
Inventors: 류용희; 구명준; 김용규; 신민철; 이윤한; 이충현
Original assignee: 삼성중공업 주식회사
Priority date: 2015-06-16
Filing date: 2015-06-16
Publication date: 2017-04-05
Also published as: KR20160148753A

Abstract

An explosion proof structure is disclosed. An explosion-proof structure according to an embodiment of the present invention includes: a wall having an opening hole passing between a front surface and a rear surface; And a lid provided on a rear surface of the wall for opening and closing the opening hole, wherein the lid is hinged to the rear surface, and the angle of rotation about the hinge by the spring can be limited.

Description

Blastwall structure

The present invention relates to an explosion-proof structure.

An offshore structure including FPSO (Floating Production Storage and Offloading) is likely to explode due to gas and oil due to its operational characteristics. If an explosion occurs in an offshore structure, it can lead to fatal structural damage or sinking. Therefore, it is necessary to reduce the possibility of an explosion in the design stage and secure the stability of the structure in the event of occurrence.

When an explosion accident occurs from an arbitrary module of an offshore structure, an explosion shock is transmitted to another module, so that various modules may explode together to cause a major accident. Also, when explosion is transmitted to a residence, To prevent this, a blastwall is installed between the modules.

Korean Patent Laid-Open No. 10-2015-0004185 discloses an explosion-proof structure for an offshore plant and a construction method thereof in connection with the explosion-proof wall.

Generally, the explosion-proof wall is designed to withstand the explosion pressure, and when the explosion occurs, the explosion-proof wall prevents the explosion pressure in the explosion-causing module from being transmitted to the other module. In other words, the explosion-proof walls primarily prevent gas from diffusing from one module to another and, secondly, prevent an explosion from propagating to other modules if an explosion occurs.

The above-described background technology is technical information that the inventor holds for the derivation of the present invention or acquired in the process of deriving the present invention, and can not necessarily be a known technology disclosed to the general public prior to the filing of the present invention.

Korean Patent Publication No. 10-2015-0004185

The present invention provides an explosion-proof structure that changes the path of an explosion wave upward while passing through a wall, thereby minimizing the influence thereof.

The present invention is to provide an explosion-proof structure in which the degree of opening is set differently depending on the position, and the influence of the explosion wave on the module on the rear side is minimized.

Other objects of the present invention will become readily apparent from the following description.

According to an aspect of the present invention, there is provided a wall structure, comprising: a wall having an opening hole penetrating between a front surface and a rear surface; And a cover provided on the rear surface of the wall for opening and closing the opening hole, wherein the cover is hinged to the rear surface, and the angle of rotation about the hinge is restricted by the spring.

One end of the spring may be fixed to the upper portion of the cover and the other end may be fixed to the wall.

The spring may be a hinge spring installed on the hinge.

The force of the spring can be set differently according to the position of the opening hole.

As the opening hole is located on the upper layer, the force of the spring can be set relatively weaker than that of the lower layer.

An angle formed between the hinge and a straight line connecting the uppermost front side of the module located at the rear of the wall with the wall may be set to a maximum opening angle of the lid.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and the detailed description of the invention.

According to the embodiment of the present invention, the effect of changing the path of the explosion wave upward in the process of passing through the wall is minimized.

Also, the opening degree is set differently according to the position, thereby minimizing the influence of the explosion wave on the rear module.

FIG. 1 is a view showing an offshore structure having an explosion-proof structure according to an embodiment of the present invention.
Figures 2a and 2b are perspective views of various embodiments of an explosion proof structure,
3 is a cross-sectional view illustrating an operation of an explosion-proof structure according to an embodiment of the present invention,
4 is a sectional view of an explosion proof structure according to another embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Also, the terms " part, "" module," and the like, which are described in the specification, mean a unit for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software.

It is to be understood that the components of the embodiments described with reference to the drawings are not limited to the embodiments and may be embodied in other embodiments without departing from the spirit of the invention. It is to be understood that although the description is omitted, multiple embodiments may be implemented again in one integrated embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a view showing a marine structure having an explosion-proof structure according to an embodiment of the present invention. FIGS. 2a and 2b are perspective views of various embodiments of the explosion-proof structure. Sectional view showing an operation of an explosion-proof structure according to the present invention.

1 to 3 illustrate the structure of the offshore structure 10, the modules 21, 22 and 23, the explosion-proof structure 100, the walls 110, 110a, 110b and 110 ' 120b, 120), a cover 130, a hinge 140, and a spring 150 are illustrated.

The explosion-proof structure 100 according to the embodiment of the present invention is an upper structure of the offshore structure 10 and is disposed between the modules 21, 22 and 23 installed on the deck, So that the influence on the module 21 located on the opposite side is minimized and the occurrence of the secondary accident is prevented in advance.

The explosion-proof structure 100 according to the present embodiment includes a wall 110 having an opening 120 formed therein and a lid 130 for opening and closing the opening 120.

The wall 110 is disposed between a module to be protected (e.g., a utility zone) and a module with a high risk of explosion (e.g., a production zone) and basically blocks the movement of fluids As a barrier wall. In this specification, a module having a high risk of explosion will be referred to as a front side, and a module to be protected will be referred to as a rear side.

The wall 110 is formed with an opening 120 passing through between the front and rear surfaces so that the explosion wave traveling toward the wall 110 can be moved backward through the opening 120. That is, the opening hole 120 can function as a passage through which an explosion wave passes.

2A and 2B, although the open holes 120a and 120b are shown as being rectangular in shape, it is only one embodiment, and various shapes such as square, polygonal, and circular shapes may be applied in some cases Of course.

2A, the opening holes 120a may be arranged in a matrix structure or the opening holes 120b may be arranged in a multi-layer structure as shown in FIG. 2B, but this is only an example, But may be arbitrarily arranged in some cases.

In addition, although the open holes 120a and 120b are shown as having the same size in FIGS. 2A and 2B, it is only one embodiment, and it is needless to say that the open holes 120a and 120b may have various sizes.

3, a lid 130 is provided on the rear surface of the wall 110 to open and close the rear surface of the opening 120 corresponding to the opening 120. As shown in FIG. The shape and size of the lid 130 may be determined corresponding to the shape and size of the opening 120.

The lower part of the lid 130 is connected to the rear surface of the wall body 110 through the hinge 140 so that the lid 130 can rotate about the hinge 140.

The other end of the spring 150 fixed to the wall 110 may be fixed to the upper portion of the lid 130. As shown in the drawing, one end of the spring 150 is fixed to the front surface of the wall 110, so that the lid 130 can completely close the opening 120.

The lid 130 closes the rear surface of the opening 120 by the restoring force of the spring 150 to prevent the fluid (for example, gas) in the front from diffusing backward ) Reference).

When a large load such as an explosion load is generated, the spring 150 is extended, and the cover 130 rotates counterclockwise about the hinge 140 and opens upward by a predetermined opening angle, (See Fig. 3 (b)).

That is, the explosion wave passes through the opening hole 120 and pushes the lid 130. However, the lid 130 is not completely opened but the reflection angle of a certain size is generated by the spring 150, 130, and moves to the rear upper side.

This can reduce the influence on the module 21, which is located behind the wall 110, as a protection target.

When the explosion pressure disappears, the lid 130 is rotated by the restoring force of the spring 150 to close the opening hole 120 again.

In another embodiment, instead of the spring 150 shown in FIG. 3, the hinge 140 may be a hinge spring with a rotation angle constraint.

The hinge spring basically causes the lid 130 to apply a rotational force in a direction to close the opening hole 120 and rotate in the opposite direction when a large load such as an explosion load is generated. Can be prevented from exceeding a predetermined opening angle or more.

4 is a cross-sectional view of an explosion-proof structure according to another embodiment of the present invention.

Referring to FIG. 4, the explosion-proof structure according to the present embodiment has the same shape and structure as the explosion-proof structure shown in FIG.

However, the lid 120-1, 120-2, 120-3, 120-4 may be opened or closed according to the positions of the open holes 120-1, 120-2, 120-3, 130-1, 130-2, 130-3, and 130-4 can be set to be different from each other.

For example, the lids 130-1 to 130-4 for opening and closing them from the lowermost opening 120-1 to the uppermost opening 120-4 have their maximum opening angles Can be set to 10 degrees (˚), 20 degrees (˚), 30 degrees (˚), and 40 degrees (˚) respectively.

In the case of the cover located at the lower part, the maximum opening angle is made small, so that the reflection angle can be made large so that the explosion wave can be advanced more steeply upward.

The maximum opening angles of the covers 130-1 to 130-4 can be adjusted by installing the springs 150-1 to 150-4 having different restoring forces. For example, the spring provided on the cover located at the lower portion of the cover may increase the restoring force, and the spring provided at the cover located at the upper portion may reduce the restoring force, so that the maximum opening angle increases toward the upper portion.

The angle formed by the hinge of the cover and the straight line connecting the uppermost layer front of the rear module 21 to the wall 110 can be set to the maximum opening angle for each layer. When the maximum opening angle is set as described above, the cover may have an angle of reflection at which the explosion wave can not reach the rear module 21.

By setting the maximum opening angle different for each floor, the influence of the explosion wave on the module 21 located behind the wall 110 can be minimized.

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 or scope of the invention as defined in the following claims And changes may be made without departing from the spirit and scope of the invention.

10: Offshore structure 21, 22, 23: Module
100: explosion-proof structure 110, 110a, 110b:
120, 120a, 120b, 120-1 to 4:
130, 130-1 to 4: lid 140, 140-1 to 4: hinge
150, 150-1 to 4: spring

Claims

A wall formed of a plurality of openings passing through between the front and rear surfaces; And
And a plurality of lids provided on a rear surface of the wall for opening and closing the plurality of open holes,
Each of the plurality of covers is hinged to a lower end of a corresponding opening, and an angle of rotation about a hinge by a spring is limited,
Wherein the force of the spring of the lid provided for the open hole located in the upper layer of the open hole is relatively weak compared to the force of the spring of the lid provided for the open hole located in the lower layer.

The method according to claim 1,
Wherein one end of the spring is fixed to the upper portion of the cover and the other end is fixed to the wall.

The method according to claim 1,
Wherein the spring is a hinge spring installed on the hinge.

delete

The method according to claim 1,
And an angle formed between the hinge and a straight line connecting an uppermost front side of a module located behind the wall to the wall is set to a maximum opening angle of each of the plurality of covers.