KR100593691B1 - Emergency oxygen service system for use in underground construction - Google Patents

Abstract

The present invention discloses an emergency oxygen supply system of underground facilities. The present invention provides an oxygen supply chamber for receiving an oxygen tank filled with compressed oxygen, which is located outside the underground facility, and an oxygen induction pipeline connected to the outlet of the oxygen tank and supplying oxygen in the tank to the evacuation passage of the underground facility in case of fire. , Valves for opening and closing the oxygen tank in case of fire, a plurality of oxygen inhalers which are arranged at regular intervals in the evacuation passage of underground facilities and connected to the oxygen induction pipeline through hoses, And a feed water pump for supplying cooling water to the cooling water pipe in the event of a fire. The fire detection means is further provided inside the underground facility, and the oxygen tank open / close valve and the water supply pump are automatically opened in conjunction with the detection signal of the fire detection means to supply oxygen quickly and safely in the event of a fire.

The present invention can quickly supply fresh oxygen to the evacuators in the event of a fire in an underground facility, such as subway station history, it is possible to suppress the suffocation caused by smoke and toxic gases to the maximum.

Lifesaving, Emergency, Disaster, Fire, Oxygen Supply, Underground Facility

Description

Emergency oxygen service system for use in underground construction             

1 is a layout view schematically showing an emergency oxygen supply system of an underground facility according to the present invention;

2 is a cross-sectional view taken along the line II-II of FIG. 1;

3 is a cross-sectional view showing the installation structure of the oxygen inhaler;

4 is a state diagram used in the present invention.

<Description of Symbols for Main Parts of Drawings>

10: oxygen supply chamber 11: oxygen tank

13: on-off valve 20: oxygen induction pipeline

30: oxygen inhaler 31: hose

32: inhaler storage 35: induction lamp

41: cooling water pipe 42: feed water pump

43: water tank 50: fire detection means

60: pressure regulating valve C: underground facilities

W: wall

The present invention relates to an emergency oxygen supply system for supplying lifesaving oxygen to an isolated facility in the event of a fire of various facilities, in particular, it is installed in underground facilities such as subway stations or tunnels, and rescued to the evacuees isolated in the event of a fire. The present invention relates to an emergency oxygen supply system for underground facilities that allows rapid supply of oxygen and minimizes suffocation caused by dense smoke and toxic gases, and at the same time, facilitates escape.

Modern building styles are complex and large in size, and interior materials made of various compounds are used.For example, in case of a fire in a building, evacuation people cannot understand their escape due to heavy smoke and toxic gases. Many people have an accident without finding it. In fact, most of the victims of fire accidents are known to suffocate within the first few minutes of the fire due to smoke and toxic gases rather than by direct flames.

In particular, when a fire breaks out in a subway station or tunnel where the facility is located underground, smoke flows to the ground through the entrance passage and the ventilation opening, so the oxygen shortage is severe and people evacuated along the entrance passage are exposed to the smoke. Injury due to suffocation is very large.

However, since underground facilities usually have only a watering device such as a sprinkler for ventilation and fire extinguishing in the event of a fire, it is impossible to prevent suffocation due to smoke and toxic gases that progress within minutes after the fire occurs. . Moreover, the sprinkler is operated by a heat sensor, which is operated only after the room temperature rises above a certain temperature due to a fire, and even if extinguishing a flame, smoke and toxic gas still remain, so that it does not contribute to the prevention of asphyxiation.

Accordingly, various types of emergency oxygen supplies have recently been proposed to prevent the sacrifice of asphyxiation in the event of a fire.

For example, the Republic of Korea Utility Model Registration No. 0318438 is a portable oxygen respirator that can be conveniently carried in an emergency such as a fire by integrating an oxygen supply control device and a mouth portion that can bite and breathe in the outlet of a small oxygen tank. Utility Model Registration No. 0321101 is equipped with an oxygen supply hose with a flow control unit and an oxygen mask with an electric lamp attached to a flat box-type oxygen cylinder, which is used for everyday transportation. Emergency small emergency oxygen mask has been proposed to allow for quick evacuation and quick evacuation while receiving oxygen.

However, these conventional emergency oxygen supplies are portable and can only be used because they are expected to carry with them in normal times, or they must be carried by fire crews in case of a fire and enter the fire site to provide evacuation victims with breathing difficulties. Not only does it cause a lot of inconvenience, but it is difficult to expect a particularly effective effect on the prevention of asphyxiation that occurs within a few minutes after the fire, since it takes at least a few minutes before the fire crew arrives at the scene due to the fire.

However, if these oxygen supplies are provided at appropriate intervals in the evacuation route of the building, some effects can be expected, but in this case, it is necessary to secure the economic burden of having a large number of oxygen supplies in the evacuation route. In addition, compressed oxygen communication may be caused by a fire and cause secondary damage.

The present invention has been devised in view of the above-described conventional problems, and in particular, by quickly and safely supplying fresh oxygen to evacuators isolated therein in the event of a fire in an underground facility, it is possible to suppress asphyxiation due to smoke and toxic gases as much as possible. The purpose is to provide an emergency oxygen supply system for underground facilities.

Another object of the present invention is that each individual does not need to carry oxygen tanks separately, and there is no need to have a large number of oxygen tanks directly in the evacuation path, so that it is possible to continuously supply fresh oxygen to the evacuation path of the facility even at a low cost. It is to provide an emergency oxygen supply system of underground facilities which is not at risk of explosion of oxygen tank.

Emergency oxygen supply system of the underground facilities according to the present invention to achieve the above objects, the oxygen supply chamber which is located outside the underground facilities, containing the oxygen tank filled with compressed oxygen; An oxygen induction pipeline connected to the outlet of the oxygen tank and supplying oxygen in the tank to the evacuation passage of the underground facility in case of fire; On-off valve for opening and closing the oxygen tank in case of fire; A plurality of oxygen inhalers disposed at regular intervals in the evacuation passage of the underground facility and connected to the oxygen induction pipeline through a hose; A cooling water pipe in which cooling water flows inside the oxygen-induced pipeline at intervals; And a water supply pump for supplying cooling water to the cooling water pipe in the event of a fire.

According to one preferred feature of the present invention, the fire detection means is further provided inside the underground facility and the oxygen tank opening and closing valve is automatically opened in conjunction with the detection signal of the fire detection means to supply oxygen quickly in the event of a fire.

Accordingly, the present invention, in case of a fire in an underground facility such as the subway station history, each individual can quickly supply fresh oxygen to the evacuators without carrying oxygen tank directly to maximize the suffocation by smoke and toxic gas Not only can it be suppressed, but also it is not necessary to have a large number of oxygen cylinders directly in the evacuation passage, which greatly contributes to securing the reliability and safety of the underground facilities and reducing costs.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

In Figure 1, the emergency oxygen supply system of the underground facility according to the present invention is the oxygen supply chamber 10 and the oxygen induction pipeline 20 for supplying oxygen from the oxygen supply chamber 10 to the evacuation passage of the underground facility (C) ), A plurality of oxygen inhalers 30 to allow the evacuator to inhale the oxygen supplied, and oxygen cooling to properly cool the oxygen supplied through the oxygen induction pipeline 20 so that the heating is not heated. And means 40.

The oxygen supply chamber 10 is preferably securely located outside the underground facility C, and contains a plurality of oxygen tanks 11 filled with compressed oxygen. Each oxygen tank 11 is connected to communicate with each other by a pipe (12), and always ensures sufficient reserve oxygen tanks in case.

The discharge port of each oxygen tank 11 is provided with an opening / closing valve 13 for opening the oxygen tank 11 at the time of fire. The on-off valve 13 may be configured as a manual operation valve, but preferably is composed of an electromagnetic valve which is automatically opened by an external signal, and fire detection means 50 such as a heat sensor is installed inside the underground facility C. It is configured to interlock with the detection signal of the fire detection means (50).

The fire detection means 50 may use a fire detector installed in the existing underground facility (C) as it is.

The oxygen induction pipeline 20 is installed on the ceiling side along the evacuation passage of the underground facility C, and one end thereof is connected to the pipe 12 connecting the oxygen tanks 11. The oxygen induction pipeline 20 is made of a material having excellent heat resistance, and a free valve 21 for cleaning the pipe is provided at the free end thereof.

The oxygen inhaler 30 is installed at a predetermined interval in the evacuation passage of the underground facility C, and is connected to the oxygen induction pipeline 20 through a hose 31, respectively. To this end, as shown in Fig. 3, the evacuation passage is provided with a box-shaped inhaler storage box 32 that can safely store the oxygen inhaler 30 at regular intervals, so as not to interfere with the passage of the wall of the evacuation passage ( It is preferable to be embedded in W).

The inhaler storage box (32) is located at the lowest possible height so that injured people, elderly people or children evacuated in the event of a fire can be easily used, and the oxygen inhaler (30) and the hose (31) from the flame or the resulting high heat. Double door structure for maximum protection. For example, the outer door 33 may be made of metal, and the inner door 34 may be made of a heat insulating material.

The hose 31 for connecting the oxygen inhaler 30 is made of a bellows tube so as to extend to a sufficient length, and the hose 31 and the oxygen inhaler 30 are made of a non-combustible material or have a non-combustible coating on the surface. It is preferable to be coated.

The oxygen inhaler 30 is configured in a mask form that can completely cover the user's nose and mouth in order to prevent easy inhalation of oxygen and intrusion of toxic gas at the time of inhalation, and preferably, oxygen discharge is turned on. Valve means (not shown) for turning on / off may be provided. The valve means may be provided with a separate on / off switch, but it is more preferably configured as a push-type mask so that oxygen flows out only when the suction part of the mask is pressed by the lips for oxygen inhalation.

On the other hand, if a fire occurs in the underground facility (C), it is difficult to easily identify the position of the oxygen inhaler 30 installed in the evacuation passage because it is difficult to distinguish the front due to the thick smoke. 32, an induction lamp 35 and an alarm buzzer (not shown) are installed together to induce the evacuator to easily grasp and access the position of the oxygen inhaler 30.

The induction lamp 35 and the alarm buzzer are also preferably operated in conjunction with the fire detection means 50, the double alarm buzzer may be a fire alarm that is already installed in the underground facility (C). In particular, the oxygen inhaler induction lamp 35 may function as an evacuation induction lamp so that evacuators can easily grasp the evacuation path even in the thick smoke and evacuate quickly.

Here, the induction light 35 and the alarm buzzer may be installed in the outer door 33 of the inhaler storage box 32 as shown, or may be installed in the wall W of the evacuation passage around the inhaler storage box 32. have.

On the other hand, the oxygen ejected from the oxygen tank 11 is supplied with a very large pressure and flow rate as compressed oxygen, the pressure of the supply oxygen to the inlet of the oxygen induction pipeline 20 so that the evacuator can stably intake oxygen It is provided with a pressure control valve 60 to drop the.

Preferably, the pressure regulating valve 60 also serves to automatically adjust the oxygen supply amount according to the oxygen intake load. That is, when oxygen is supplied at a constant pressure and flow rate, when many evacuators are used at the same time, the oxygen supply is insufficient, making it difficult to inhale sufficiently. On the contrary, when there are few users of the oxygen inhaler 30, the supply pressure is high and the evacuation of Barrier to the oxygen intake, according to the number of users of the oxygen inhaler 30 is to automatically adjust the pressure of the supply oxygen so that oxygen of a certain pressure is supplied to each oxygen inhaler (30).

The oxygen cooling means 40 surrounds the oxygen-induced pipeline 20 concentrically, with a coolant pipe 41 flowing with coolant therein, and a water supply pump 42 for continuously supplying coolant into the coolant pipe 41 in the event of a fire. And a water tank 43 located outside the underground facility C.

As shown in FIG. 2, the coolant pipe 41 substantially wraps the oxygen-induced pipeline 20 concentrically at intervals to suppress a rise in temperature of the supply oxygen due to fire by the coolant. And a circulation portion 41b circulated between the water tank 43 and the cooling portion 41a.

The cooling unit 41a is configured to have a large diameter because the cooling water must flow in a state in which the oxygen-induced pipeline 20 is accommodated therein, and the circulation unit 41b is configured to have a relatively small diameter to Both ends are connected to the water tank 43, and a water feed pump 42 is provided at the inlet side of the circulation portion 41b. The water feed pump 42 may be manually driven, but is preferably configured to be automatically driven in conjunction with the detection signal of the fire detection means 50.

Preferably, the cooling unit 41a is provided with an air bleed valve 44 for preventing poor cooling and pulsation due to air.

Next, the operation of the emergency oxygen supply system for underground facilities according to the present invention configured as described above will be described with reference to FIG.

In normal times, the oxygen tank 11 is closed in a state of being fully charged, and the water supply pump 42 is also not operated.

In this state, when a fire occurs in the underground facility C and the internal temperature rises above a predetermined temperature, the fire detection means 50 installed in the facility C detects the fire and alarms it. As the oxygen tank open / close valve 13 interlocked with the fire detection means 50 is opened, oxygen is supplied to the oxygen induction pipeline 20 installed in the evacuation passage and at the same time, the inhaler storage box 32 is installed in the evacuation passage. Induction light (35) of the flashing or lighting the alarm buzzer will operate.

At this time, the high pressure oxygen ejected from the oxygen tank 11 is passed through the pressure control valve 60 is reduced to a suitable pressure suitable for intake evacuator and then supplied to the oxygen induction pipeline (20).

At the same time, the feed water pump 42 is operated to circulate the cooling water from the water tank 43 to the cooling water pipe 41, so that the temperature of the oxygen supplied through the oxygen induction pipeline 20 rises due to the flame. This is effectively suppressed.

That is, the cooling unit 41a of the cooling water pipe 41 surrounds the oxygen induction pipeline 20 concentrically, and the cooling water continues to flow to the outer circumference of the oxygen induction pipeline 20. By absorbing and moving, it effectively blocks the conduction to the oxygen-induced pipeline 20, so that the temperature rise of the supply oxygen is suppressed, thereby allowing the evacuators to stably intake oxygen.

Then, people evacuating along the evacuation passage in the underground facility (C) filled with dense smoke and toxic gas due to the fire can find the position of the oxygen inhaler storage box (32) by the induction lamp (35) relatively easily. 4, after opening the inhaler storage box 32 provided on the wall (W) of the evacuation passage, the oxygen inhaler 30 stored therein is taken out from the outside through the oxygen induction pipeline 20 The fresh oxygen being supplied can be easily inhaled.

At this time, since the oxygen inhaler 30 has a mask shape that can cover a person's mouth and nose, there is little fear of inhalation of smoke or toxic gas at the same time during the oxygen inhalation, and oxygen only when the suction part is pressed to the lips. Since it is supplied, no unnecessary leakage of oxygen occurs.

Therefore, it is possible to wait for rescue without choking even in the thick smoke and toxic gas caused by fire, or to evacuate by accurately evacuating the evacuation path through the induction lamp (35). You can escape quickly.

As described above, according to the emergency oxygen supply system of the underground facilities according to the present invention, in the event of a fire in the underground facilities such as subway stations, the individual can quickly deliver fresh oxygen to the evacuees without carrying the oxygen tank directly. It is possible to supply, thereby maximally suppressing the asphyxiation caused by smoke and toxic gases.

In addition, there is no need to have a large number of oxygen cylinders directly in the evacuation passage, so there is no fear of secondary explosion of compressed oxygen communication by the flame.

Therefore, the present invention has a very excellent effect of greatly contributing to ensuring the reliability and safety of underground facilities, and reducing costs.

Claims (8)

An emergency oxygen supply system for supplying rescue oxygen to internal evacuators in the event of a fire in an underground facility, comprising: an oxygen supply chamber located outside the underground facility and accommodating an oxygen tank filled with compressed oxygen; An oxygen induction pipeline connected to an outlet of the oxygen tank and supplying oxygen in the tank to an evacuation passage of an underground facility in a fire; On-off valve for opening and closing the oxygen tank in the event of fire; A plurality of oxygen inhalers disposed at a predetermined interval in the evacuation passage of the underground facility and connected to the oxygen induction pipeline through a hose; A cooling water pipe through which the cooling water flows inside the oxygen induction pipeline; And Emergency oxygen supply system of an underground facility comprising a; water supply pump for supplying cooling water to the cooling water pipe in the event of a fire. The emergency oxygen supply system of claim 1, further comprising a fire sensing means inside the underground facility, wherein the oxygen tank open / close valve is automatically opened in response to a detection signal of the fire detecting means. . The pressure regulating valve according to claim 1 or 2, further comprising a pressure regulating valve for automatically reducing the supply oxygen pressure downstream of the oxygen tank on / off valve and automatically adjusting the supply oxygen pressure according to the suction load. Emergency oxygen supply system of underground facilities. [4] The emergency oxygen supply system of claim 3, wherein the oxygen inhaler is stored in an inhaler storage box installed at a predetermined interval on the evacuation passage wall of the underground facility. The emergency oxygen supply system of claim 4, further comprising an induction lamp for indicating a position of the inhaler storage box, wherein the induction lamp is operated in conjunction with a detection signal of the fire detection means. The emergency oxygen supply system of an underground facility according to claim 1 or 4, wherein the oxygen inhaler and the connection hose are made of a non-combustible material. The emergency oxygen supply system of an underground facility according to claim 2, wherein the water supply pump is automatically driven in association with a detection signal of the fire detection means. The emergency oxygen supply system of an underground facility according to claim 1, wherein an air bleed valve is provided in the cooling water pipe.

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