CN209865063U - Self-sustaining fire rescue breathing apparatus - Google Patents

Abstract

The utility model discloses a self-sustaining fire scene lifesaving breathing device, which comprises a high-pressure air reservoir, wherein the air inlet of the high-pressure air reservoir is provided with a high-pressure air inlet valve, and the air outlet of the high-pressure air reservoir is provided with a high-pressure reducing valve; the high-pressure relief valve is provided with a high-pressure relief valve switch, the high-pressure relief valve is connected with the air inlet of the low-pressure air cylinder through a high-pressure air outlet pipe, the air outlet of the low-pressure air cylinder is connected with a low-pressure constant-pressure valve, the air outlet of the low-pressure constant-pressure valve is connected with a low-pressure air outlet hose, and the tail end of the low-pressure air outlet hose is connected with. The utility model discloses can provide a certain amount of clean air at the scene of fire to stranded personnel withdraw or insist on waiting for aid under the state that keeps safe breathing.

Description

Self-sustaining fire rescue breathing apparatus

technical field

The utility model relates to a life-saving device at a disaster site, in particular to a life-saving device at a fire site.

Background technique

In modern society, fires often occur, causing certain losses to people's lives and property. In most cases, the death caused by fire is due to the inhalation of toxic smoke or excessive carbon dioxide gas, which leads to coma or even suffocation death due to the untimely evacuation of the trapped personnel. If the trapped people want to hold their breath and evacuate the fire scene, it is often not easy to succeed. Because people's ability to hold their breath is limited, generally no more than one minute. However, it usually takes ten to thirty minutes from the outbreak of the fire to the arrival of fire rescue personnel. During these ten to thirty minutes, if there is a self-rescue protective and breathing device for the trapped people on the scene, it can help the scene The trapped persons should evacuate in time, or allow the trapped persons to persist until the arrival of rescuers if they can avoid the flames.

Contents of the invention

The technical problem to be solved by the utility model is to provide a self-sustaining fire scene life-saving breathing device, which can provide a certain amount of clean air at the fire scene, so that the trapped people can evacuate or stand by for help while maintaining a safe breathing state.

In order to solve the above-mentioned technical problems, the utility model self-sustaining fire rescue breathing device includes a high-pressure air storage tank, the air inlet of the high-pressure air storage tank is provided with a high-pressure air intake valve, and the air outlet is provided with a high-pressure decompression valve; A high-pressure pressure-relief valve switch is provided on the high-pressure pressure-relief valve, and the high-pressure pressure-relief valve is connected with the air inlet of the low-pressure air storage cylinder through the high-pressure air outlet pipe, and the air outlet of the low-pressure air storage cylinder is connected with a low-pressure constant pressure valve. The air outlet of the low-pressure constant pressure valve is connected with a low-pressure air outlet hose, and the end of the low-pressure air outlet hose is connected with a respirator.

The high-pressure decompression valve is also provided with a pressure gauge of a high-pressure air storage tank.

The low pressure constant pressure valve is also provided with a pressure gauge of a low pressure air storage tank.

It also includes 2 fixed rings, and the high-pressure gas storage tank and the low-pressure gas storage tank are arranged in parallel through the fixed rings.

It also includes a base of an air storage tank, on which the high-pressure gas storage tank is connected in parallel with the low-pressure gas storage tank.

The fixing ring is provided with buckles, and the low-pressure air outlet hose is movably connected to the buckles.

The end of the respirator is configured as a trumpet-shaped opening, and a cross bar is arranged in the trumpet-shaped opening.

The two fixed rings are connected with a back strap.

The utility model has the advantage that two gas storage tanks of high pressure and low pressure are cleverly used, the high pressure gas storage tank solves the contradiction of small volume, light weight and large gas storage capacity; the low pressure gas storage tank solves the problem that high pressure air cannot be directly supplied to the receiving The contradiction of the breathing of the trapped person makes the air pressure output by the low-pressure air outlet hose slightly higher than the external atmospheric pressure, and it is smooth and soft. In the event of a fire, a certain amount of clean air can be provided to the trapped people, so that the trapped people can stand by and wait for help while maintaining a safe breathing state. At the same time, the trapped persons can carry the device on their backs and evacuate by themselves while maintaining the support of clean air.

Description of drawings

Fig. 1 is a structural schematic diagram of the self-sustaining fire-scene life-saving breathing device of the present utility model.

Detailed ways

The specific embodiment of the utility model will be further described below in conjunction with the accompanying drawings.

As can be seen in Figure 1, the self-sustaining fire scene life-saving breathing device of the present utility model comprises a high-pressure air storage tank 1, the air inlet of the high-pressure air storage tank 1 is provided with a high-pressure air intake valve 4, and the air outlet is provided with a high-pressure pressure relief valve 2 ; The high-pressure relief valve 2 is provided with a high-pressure relief valve switch 5, and the high-pressure relief valve 2 is connected to the air inlet of the low-pressure air storage tank 8 through the high-pressure air outlet pipe 7, and the air outlet of the low-pressure air storage tank 8 A low pressure constant pressure valve 9 is connected, the air outlet of the low pressure constant pressure valve 9 is connected with a low pressure outlet hose 12 , and the end of the low pressure outlet hose 12 is connected with a respirator 13 .

The high-pressure intake valve 4 is used to inject and supplement high-pressure air to the device.

The high-pressure decompression valve 2 is also provided with a high-pressure air tank barometer 3 .

The low pressure constant pressure valve 9 is also provided with a pressure gauge 11 of a low pressure air storage tank.

It also includes two fixed rings 6 through which the high-pressure gas storage tank 1 and the low-pressure gas storage tank 8 are arranged in parallel.

It also includes an air storage base 15 on which the high-pressure air storage 1 and the low-pressure air storage 8 are connected in parallel.

The fixing ring 6 is provided with buckles, and the low-pressure air outlet hose 12 is movably connected to the buckles.

The end of the respirator 13 is configured as a trumpet-shaped opening, and a cross bar 130 is disposed in the trumpet-shaped opening.

The 2 fixed rings 6 are connected with 1 strap on the upper part.

In the utility model, the fixing ring 6 positions the two air storage tanks on the one hand, and can be used as an attachment of the strap in addition. When the device is not in use, the fixing ring 6 is also used to fix the low-pressure air outlet hose 12.

The reason why the utility model adopts two air storage cylinders of high pressure and low pressure is because the practical problems to be solved are as follows: 1. It is necessary to ensure that the respirator has enough air to supply the breath volume for 20 minutes; 2. The volume should not be too large and the weight should be light ; 3. The respirator is easy to use.

In order to solve the contradiction between the gas storage capacity and the volume of the gas storage tank, the measure adopted is to use a high-pressure gas storage tank to increase the gas storage capacity. After the air is pressurized, the gas storage capacity is greatly increased. In order to ensure the safety of the high-pressure gas storage tank, a titanium alloy tube with light weight and excellent ultra-high pressure resistance is selected as the high-pressure gas storage tank. The low-pressure air tank can be made of aluminum alloy with lighter weight. Because the high-pressure air cannot be directly supplied to the trapped persons for breathing, it must go through two stages of decompression to make the air outlet of the respirator reach a slightly higher atmospheric pressure than the outside world, and provide the trapped persons with normal breathing. The utility model adopts a specially designed high-pressure decompression valve and a low-pressure constant pressure valve, so that the breathing device is safer, more reliable, and more convenient to use.

When the utility model is in use, first put the trumpet-shaped mouthpiece at the end of the respirator 13 on the mouth and nose, rotate the high-pressure pressure-relief valve switch 5 to open the high-pressure pressure-relief valve 2, and then rotate the low-pressure constant-pressure valve switch 10 to open the low-pressure constant-pressure valve 9 to breathe safely. The respirator 13 is set as a trumpet-shaped opening and can also partially cover the mouth and nose, effectively preventing smoke from invading the trapped personnel.

Further, in dangerous situations, trapped persons can be allowed to carry the utility model on their backs to evacuate from the scene. At this time, first pull the low-pressure air outlet hose 12 to make the hose break away from the fixing ring 6, and the trapped person carries the whole device on his back through the straps connected on the 2 fixing rings 6, and then bites the trumpet-shaped hose with his teeth. The cross bar 130 arranged in the opening makes it impossible to disengage, and simultaneously opens the air valve to evacuate. During the evacuation process, the device does not need to be held, and the respirator 13 can also be fixed by biting the teeth, so that the trapped persons have a high degree of freedom of physical activities, which further improves the agility of movement.

Claims (7)

1. The utility model provides a self-sustaining formula scene of fire lifesaving respiratory device, includes high-pressure gas receiver (1), its characterized in that: a high-pressure air inlet valve (4) is arranged at an air inlet of the high-pressure air storage cylinder (1), and a high-pressure reducing valve (2) is arranged at an air outlet; be equipped with high pressure relief valve switch (5) on high pressure relief valve (2), high pressure relief valve (2) link to each other through the air inlet of high-pressure outlet duct (7) with low pressure gas receiver (8), the gas outlet of low pressure gas receiver (8) is connected with low pressure constant pressure valve (9), the gas outlet of low pressure constant pressure valve (9) is connected with low pressure air outlet hose (12), the end-to-end connection of low pressure air outlet hose (12) has respirator (13).

2. A self-sustaining fire scene life-saving breathing apparatus as defined in claim 1, wherein: and a high-pressure air cylinder barometer (3) is also arranged on the high-pressure reducing valve (2).

3. A self-sustaining fire scene life-saving breathing apparatus as defined in claim 1, wherein: and a low-pressure air cylinder barometer (11) is also arranged on the low-pressure constant-pressure valve (9).

4. A self-sustaining fire scene life-saving breathing apparatus as defined in claim 1, wherein: still include 2 retainer rings (6), high pressure gas receiver (1) with low pressure gas receiver (8) are through retainer ring (6) are by parallel arrangement.

5. A self-sustaining fire scene life-saving breathing apparatus as defined in claim 1, wherein: the high-pressure air storage cylinder is characterized by further comprising an air storage cylinder base (15), wherein the high-pressure air storage cylinder (1) and the low-pressure air storage cylinder (8) are connected to the air storage cylinder base (15) in parallel.

6. The self-contained life saving breathing apparatus in a fire scene of claim 4, wherein: the fixing ring (6) is provided with a buckle, and the low-pressure air outlet hose (12) is movably connected to the buckle.

7. A self-sustaining fire scene life-saving breathing apparatus as defined in claim 1, wherein: the tail end of the respirator (13) is provided with a horn-shaped opening.