KR20170000776U

KR20170000776U - Extingguishing device

Info

Publication number: KR20170000776U
Application number: KR2020150005604U
Authority: KR
Inventors: 김태훈; 권승민
Original assignee: 대우조선해양 주식회사
Priority date: 2015-08-21
Filing date: 2015-08-21
Publication date: 2017-03-02

Abstract

A fire extinguishing device which can be used both as a throwing type and a beach type, is structurally very stable, and has a simple structure and can reduce the manufacturing cost. The fire extinguishing system comprises a housing having a spherical shape and containing therein a liquefied extinguishing agent; And at least one thermal reaction spraying nozzle provided at an outer circumferential portion of the housing and discharging a liquefied extinguishing agent filled in the housing by opening a hole of the housing under a condition of a predetermined temperature or higher.

Description

EXTINGUCHING DEVICE

The present invention relates to a fire extinguishing system, and more particularly, to an extinguishing system that automatically releases carbon dioxide at a predetermined temperature or higher to cut off air supply to a fire point.

Generally, a fire extinguishing device means a fire extinguishing device that utilizes the effects of cooling or air shutoff of the fire extinguisher at a fire point. Spray type carbon dioxide fire extinguisher can not be carried and can not be used if it is not portable and it is difficult to use it. In addition, people often have difficulty in accessing fire in the fire extinguisher beach area.

In order to solve such a problem, a large thrown fire extinguisher having a timer function has been disclosed in Korean Utility Model Registration No. 20-0426012 (2006.09.01) filed in the Republic of Korea and Korean Patent Publication No. 10-2012-0128818 (2012.11.28), a small fire extinguisher having an alarm sound output function has been disclosed.

However, since the conventional throwing type fire extinguishing device is made of throwing type, it was not suitable for use as a beach type, and it was not structurally stable and had a reliability problem.

Patent Document 1: Korean Utility Model Registration No. 20-0426012 (2006.09.01) Patent Document 2: Korean Published Patent Application No. 10-2012-0128818 (November 28, 2012)

In order to solve such conventional problems, the present invention provides a fire extinguishing system which can be used both as a throwing type and a beach type, is structurally very stable, and has a simple structure and can lower the manufacturing cost.

According to an aspect of the present invention, there is provided a fire extinguishing system comprising: a housing having a spherical shape and housing a liquefied extinguishing agent therein; And at least one thermal reaction spraying nozzle provided at an outer circumferential portion of the housing and discharging a liquefied extinguishing agent filled in the housing by opening a hole of the housing under a condition of a predetermined temperature or higher.

The fire extinguishing device according to the present invention can be used in both a throwing type and a beach type so that it can be used under various conditions, has excellent structural stability and can be manufactured at a low cost.

1 is a perspective view illustrating an extinguishing system according to an embodiment of the present invention,
FIG. 2 is a sectional view showing the inside of the fire extinguishing system according to one embodiment of the present invention,
FIG. 3 is a sectional view showing the inside of the extinguishing system according to a modification of FIG. 2,
FIG. 4 is a cross-sectional view showing the interior of the extinguishing system according to another modification of FIG. 2,
FIG. 5 is a cross-sectional view illustrating a thermal reaction injection nozzle of the fire extinguishing system according to an embodiment of the present invention,
6 and 7 are cross-sectional views illustrating an operation example of the safety relief valve of the fire extinguishing system according to an embodiment of the present invention.

Hereinafter, the technical construction of the fire extinguishing system will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an extinguishing device according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the inside of the extinguishing device according to an embodiment of the present invention.

1 and 2, an extinguishing apparatus 100 according to an embodiment of the present invention includes a housing 10, a thermal reaction injection nozzle 20, a safety relief valve 30, an extinguishing agent inlet 40 ).

The housing 10 has a spherical shape, and a space is formed therein to accommodate the liquefied and extinguishing agent. The liquefied extinguishing agent is preferably composed of liquefied carbon dioxide. When the liquefied or extinguishing agent is discharged to the outside of the housing 10, the liquefied extinguishing agent is changed from a normal temperature to dry ice, which is solid, and the supply of air to the fire place is blocked.

The carbon dioxide gas has no fear of corrosion or damage and is a gas which does not leave any trace even after digestion. It is easy to penetrate and can be extinguished in any place. Carbon dioxide is gas at room temperature and atmospheric pressure due to its nature and can easily be liquefied by compression or cooling.

The housing 10 according to one embodiment of the present invention is constituted by an inner plate 11 for accommodating a liquefied and extinguishing agent and an outer plate 13 covering the outside of the inner plate 11. It is preferable that the outside sheathing 13 is made of a metal material such as iron (Fe), and the inner sheath 11 is made of an aluminum metal material resistant to low temperature and high pressure.

By structuring the housing 10 in two by the inner plate 11 and the outer plate 13, the structural stability can be improved and the material of the inner plate and the outer plate can be made different from each other, .

In addition, an air layer 15 is provided between the inner plate 11 and the outer sheath 13. The air layer 15 performs a kind of heat insulating function, and it is possible to prevent performance deterioration even at a low temperature and perform more stable operation.

3 is a cross-sectional view showing the inside of the extinguishing system according to a modification of FIG.

Referring to FIG. 3, a heat insulating material 17 is provided inside the housing 10. The inside of the heat insulating material 17 is filled with the liquefied extinguishing agent. Therefore, it is possible to prevent deterioration of performance even at a low temperature and perform more stable operation.

FIG. 4 is a cross-sectional view showing the interior of the extinguishing system according to another modification of FIG. 2. FIG.

4, the housing 10 is composed of an inner plate 11 for accommodating a liquefied and extinguishing agent and an outer plate 13 for covering the outside of the inner plate 11. The heat insulating material 17 is composed of an inner plate 11, (Not shown).

The extinguishing device according to one embodiment of the present invention is suitable for use in an offshore structure such as a liquefied gas carrier. That is, the withstand pressure of the aluminum cargo hold of the liquefied gas carrier is designed to withstand at least 30 bar in the case of the sloshing load. The present invention is an entirely spherical type in which the sloshing phenomenon is difficult to occur. A load is generated. Therefore, in terms of structural strength, the insulation material (air layer) and the inner plate made of aluminum can withstand the design pressure according to the standard.

A plurality of thermal reaction spray nozzles 20 are provided on the outer peripheral portion of the housing 10. The thermal reaction injection nozzle 20 opens the holes of the housing 10 under a condition of a certain temperature or higher and ejects the liquefied extinguishing agent filled in the housing 10. The thermal reaction injection nozzle 20 can be composed of a nozzle to which a thermal reaction fuse having an operating temperature of 72 ° C is applied.

5 is a cross-sectional view illustrating a thermal reaction injection nozzle of the fire extinguishing system according to an embodiment of the present invention. Referring to FIG. 5, the thermal reaction injection nozzle 20 may be composed of a screw 21 made of a lead alloy, which closes the hole of the housing 10. The screw 21 is melted at a predetermined temperature or higher (about 300 ° C to 400 ° C) to open the hole of the housing 10. In this case, a thread 23 is formed in the hole of the housing 10, and the screw 21 can be easily fixed to the thread 23 by rotation. The end of the screw 21 may be fixed to the housing 10 by brazing.

The safety relief valve (30) is provided in the housing (10) and releases the liquefied extinguishing agent filled in the housing (10) under a condition of a certain pressure or more.

6 and 7 are cross-sectional views illustrating an operation example of the safety relief valve of the fire extinguishing system according to an embodiment of the present invention.

6 and 7, the safety relief valve 30 includes a disk 33 slidably provided in a direction perpendicular to the hole of the housing 10, And a discharge hole 31 for selectively discharging the liquefied extinguishing agent filled in the housing 10 by being opened or closed in accordance with sliding of the elastic member 35 and the disk 33 to be pressed. The opening direction of the discharge hole 31 is formed perpendicular to the hole opening direction of the housing 10.

The valve remains closed when the force of the elastic member 35 acting on the upper portion of the disk 33 is larger than the force due to the pressure of the liquefied extinguishing agent acting on the lower end surface of the disk 33. [ When the pressure of the liquefied extinguishing agent reaches the nozzle ring and the force of the liquefied extinguishing agent acting on the disk 33 is greater than the force of the elastic member 35 acting on the upper portion, Is discharged to the outside.

The safety relief valve 30 takes into consideration an increase in the internal pressure caused by vaporization of the liquefied gas filled in the housing 10. The safety relief valve 30 is provided in the housing 10 when a critical set pressure (approximately 0.7 times the storage vessel pressure: 24 bar) Thereby releasing the internal liquefied extinguishing agent.

By constituting the safety relief valve 30, the fire extinguishing apparatus 100 according to an embodiment of the present invention can be used as a throw-away type in a fire occurrence site, and can be used as an unmanned offshore platform, In the event of a fire or explosion, the liquefied extinguishing agent can be released automatically to suppress the fire. Thus, when the fire extinguishing system is used as a stand-alone type, the liquefied extinguishing agent must be filled in advance, and the safety relief valve 30 is essentially required.

The fire extinguishing agent injection port 40 is provided in the housing 10 for injecting the liquefied fire extinguishing agent into the interior of the housing 10. By providing the fire extinguishing agent injection port 40, it is possible to use the fire extinguishing agent by filling up carbon dioxide immediately on the spot when a fire occurs.

Although the fire extinguishing system according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the technical protection should be determined by the technical idea of the appended claims.

100: Fire extinguisher
10: housing 11: inner plate
13: outer plate 15: air layer
17: Insulation material 20: Thermal reaction injection nozzle
21: screw 23: thread
30: safety relief valve 31: discharge hole
33: Disk 35: Elastic member
40: Extinguishing agent inlet

Claims

A housing 10 having a spherical shape and containing therein a liquefied extinguishing agent; And
And at least one thermal reaction injection nozzle 20 provided at an outer circumferential portion of the housing 10 for opening the holes of the housing 10 under a condition of a predetermined temperature or higher and ejecting the liquefied extinguishing agent filled in the housing 10 Wherein the fire extinguishing device is a fire extinguishing device.

The method according to claim 1,
And a safety relief valve (30) provided in the housing (10) for discharging the liquefied extinguishing agent filled in the housing (10) under a condition of a predetermined pressure or more.

3. The method of claim 2,
The safety relief valve (30) comprises:
A disk (33) slidably provided in a direction perpendicular to a hole of the housing (10);
An elastic member (35) for elastically pressing the disk (33) in a sliding direction; And
And a discharge hole (31) for selectively discharging the liquefied extinguishing agent filled in the housing (10) by being opened or closed according to sliding of the disk (33).

The method of claim 3,
Wherein an opening direction of the discharge hole (31) is formed perpendicular to a hole opening direction of the housing (10).

The method according to claim 1,
The housing 10 is composed of an inner plate 11 for accommodating a liquefied and extinguishing agent and an outer plate 13 covering the outer surface of the inner plate 11 and an air layer 15 And a control unit for controlling the operation of the fire extinguishing unit.

The method according to claim 1,
Characterized in that a heat insulating material (17) is provided inside the housing (10), and a liquefied extinguishing agent is filled in the heat insulating material (17).

The method according to claim 6,
The housing 10 is constituted by an inner plate 11 for accommodating a liquefied and extinguishing agent and an outer plate 13 for covering the outer surface of the inner plate 11. The thermal insulating material 17 is disposed between the inner plate 11 and the outer plate 13 And an exhaust pipe connected to the exhaust pipe.

The method according to claim 1,
The thermal reaction injection nozzle 20 is composed of a screw 21 made of a lead alloy that closes the hole of the housing 10 and the screw 21 melts at a predetermined temperature or higher to open the hole of the housing 10 Wherein the fire extinguisher is a fire extinguisher.

The method according to claim 1,
Further comprising a fire extinguishing agent inlet (40) for injecting the liquefied fire extinguishing agent into the housing (10).