KR101774880B1

KR101774880B1 - Door system for blastwall structure

Info

Publication number: KR101774880B1
Application number: KR1020150075219A
Authority: KR
Inventors: 신민철; 구명준; 김용규; 류용희; 이윤한; 이충현
Original assignee: 삼성중공업 주식회사
Priority date: 2015-05-28
Filing date: 2015-05-28
Publication date: 2017-09-07
Also published as: KR20160141155A

Abstract

An access door system for an explosion proof structure is disclosed. An access door system of an explosion proof structure according to an embodiment of the present invention includes: an access door formed at one side of an explosion-proof structure; A rail provided for sliding movement of the door; And a shock absorber having one end fixed by the support portion and the other end supporting one side of the door.

Description

Door system for blastwall structure < RTI ID = 0.0 >

The present invention relates to an access door system for 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.

The explosion-proof wall is placed between the module to be protected (for example, the utility area) and the module (for example, the production area where explosion is expected due to the high risk of explosion) .

In this case, the door is provided on the explosion-proof wall so that the worker who normally needs to move between the two spaces can smoothly move. In this case, it is also necessary to prevent the explosion wave from opening to the door.

Korean Patent No. 10-0618537 discloses an emergency automatic locking device for a fire shutter that prevents fire escaping doors from opening naturally and preventing flames and smoke from spreading when a fire 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 No. 10-0618537

An object of the present invention is to provide an explosion proof structure having a door that is open to a slow load such as a pushing force of an operator and has a door functioning as a wall for a load such as an explosion load of a blast wave .

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 an explosion-proof structure, comprising: a door formed at one side of an explosion-proof structure; A rail provided for sliding movement of the door; And a shock absorber having one end fixed by the support and the other end supporting one side of the door.

The shock absorber includes: a cylinder; A piston reciprocating in the cylinder, a piston rod having one end connected to the piston and the other end exposed to the outside of the cylinder, and a spring installed on the exposed piston rod.

The cylinder may be filled with fluid.

The type of fluid can be determined according to the explosion load the door is intended to withstand.

The other end of the cylinder is fixed to the support portion, and the other end of the piston rod can support the rear surface of the door.

The other end of the cylinder is fixed to the rear surface of the door, and the other end of the piston rod can support the support portion.

The restoring force of the spring may be determined according to the magnitude of the explosion load to which the door is to withstand.

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, there is an effect of providing a door that functions as a wall for a load with a slow speed such as a pushing force by an operator and a load with a high speed such as an explosion load of an explosion wave.

1 is a perspective view of an explosion-proof structure including a door system according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an explosion proof structure having the door door system shown in FIG. 1;
Figs. 3 and 4 are plan views showing an operation of the door system shown in Fig. 1. Fig.

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, refer to 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 perspective view of an explosion-proof structure having an access door system according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of an explosion-proof structure having a door door system shown in FIG. 1, and FIGS. Fig. 7 is a plan view showing an operation of the door access system shown in Fig.

1 to 4 show an example of a structure including an offshore structure 1, a wall 10, an access door system 100, a door 110, a shock absorber 120, a support 140, a rail 130, a cylinder 121, A piston rod 123, and a spring 124 are shown.

The explosion-proof structure according to one embodiment of the present invention is disposed between modules installed on a deck as an upper structure of an offshore structure 1 and is resistant to pressure caused by an explosion generated in an arbitrary module, And the door is opened by sliding movement.

The explosion-proof structure according to the present embodiment includes a wall 10 disposed between a module to be protected (for example, a utility zone) and an explosion-prone module (for example, a production zone) And serves as a blocking wall for blocking.

The door system 100 of the explosion proof structure includes a door 110, a shock absorber 120, and a rail 130.

A door 110 is formed at one side of the wall 10 so that an operator can enter and exit the door.

The door 110 can be moved back and forth in the horizontal direction by sliding along the rails 130 provided on the upper surface of the deck of the offshore structure 1. [

The rail 130 may be installed behind the wall 10 and may be installed perpendicular to the wall 10.

The rear surface of the door 110 can be supported by the other end of the shock absorber 120 having one end fixed to the support 140.

The support 140 may be a separate support structure or an exterior wall of a module (e.g., utility area) to be protected by an explosion-proof structure.

The shock absorber 120 includes a cylinder 121, a piston 122 reciprocating in the cylinder 121, a piston rod 122 having one end connected to the piston 122 and the other end exposed to the outside of the cylinder 121 123 and a spring 124 installed on the piston rod 123 exposed to the outside of the cylinder 121. [

The spring 124 is interposed between the outer surface of the cylinder 121 and the other end of the piston rod 123. When the piston rod 123 is pressed by an external force and the other end moves toward the cylinder 121, And the other end of the piston rod 123 is positioned at the original position by the restoring force when the external force disappears. At this time, the influence of the external force applied to the piston rod 123 by the expansion and contraction action of the spring 124 can be weakened.

In addition, the shock absorber 120 may be filled with a predetermined fluid in the cylinder 121 to increase the resistance. In this case, the shock absorber 120 may be classified into a gas shock absorber or an oil shock absorber depending on the kind of fluid to be filled.

Although the cylinder of the shock absorber 120 is shown as being fixed to the support portion 140 and the other end of the piston rod 123 supporting the rear surface of the door 110, The cylinder of the shock absorber 120 may be fixed to the rear surface of the door 110 and the other end of the piston rod 123 may support the support portion 140 as needed.

In this embodiment, the shock absorber 120 serves as a brake (resistance) against the sliding movement of the door 110.

When a high-speed load acts on the door 110, it provides a large resistance force to function as a blocking wall (see FIG. 3).

For example, an explosion wave corresponds to a very high-speed load that instantaneously causes a large explosive pressure to be applied to the door.

In this case, the shock absorber 120 can suppress the opening of the door 110, thereby minimizing the influence of the explosion wave that is behind the wall 10.

On the other hand, when a low-speed load is applied to the door 110, the shock absorber 120 provides a low resistance so that the door 110 slides and functions as a door (see FIG. 4).

When the operator pushes the door 110 forward with respect to the wall 10, the pushing force of the operator corresponds to a slow load, and the operator pushes the door 110 to a sufficient distance to move the door 110, So that it can enter the rear of the wall 10 through the opening between the door 110 and the door 110.

In this embodiment, the restoring force of the spring 140 and the kind of fluid filled in the cylinder 121 can be determined according to the magnitude of the explosion load to which the door 110 is to endure.

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.

1: Offshore structure 10: Wall
100: Entrance door system 110: Entrance door
120: shock absorber 130: rail
140: Support part 121: Cylinder
122: piston 123: piston rod
124: spring

Claims

A door formed at one side of the wall;
A rail having the door vertically disposed with respect to the wall so as to be slidable forward and backward; And
And a shock absorber whose one end is fixed to a rear portion of the wall by a spaced apart support portion and whose other end supports the rear surface of the door,
When the load of the external force applied to the front surface of the door is higher than a predetermined speed, the shock absorber resists so that the door functions as a blocking wall, and when the load is less than a predetermined speed, The door system of the explosion proof structure to form.

The method according to claim 1,
The shock absorber
A cylinder;
A piston reciprocating in the cylinder;
A piston rod having one end connected to the piston and the other end exposed to one side of the cylinder;
And a spring installed on the exposed piston rod.

3. The method of claim 2,
Wherein the cylinder is filled with fluid.

The method of claim 3,
Wherein the type of fluid is determined by the explosion load the door is intended to withstand.