阅读说明：本技术 一种应急呼吸用气源 (Emergency breathing gas source ) 是由 牛同锋 姚俊 崔兵彦 张毅 陈淑娟 王梦蕾 刘红 周渝淞 潘世云 高俊 于 2020-07-06 设计创作，主要内容包括：本发明属于应急救生技术领域,提供了一种应急呼吸用气源,包括气瓶本体(13)、堵片(12)气瓶阀体(10)、气瓶击穿机构和击发机构；所述气瓶本体(13)为高压气瓶,堵片(12)以焊接方式设置在气瓶本体(13)的口部,堵片(12)用于密封气瓶本体(13)内的高压气体；所述气瓶阀体(10)设置在堵片(12)外侧,气瓶阀体(10)一端在堵片(12)外侧与气瓶本体(13)口部密封连接,另一端依次与气瓶击穿机构、击发机构密封连接；所述击发机构用于触发气瓶击穿机构动作以刺破堵片(12),释放气瓶本体(13)内的高压气体。(The invention belongs to the technical field of emergency lifesaving, and provides an air source for emergency breathing, which comprises an air bottle body (13), a blocking piece (12), an air bottle valve body (10), an air bottle breakdown mechanism and a firing mechanism; the gas cylinder body (13) is a high-pressure gas cylinder, the blocking piece (12) is arranged at the opening of the gas cylinder body (13) in a welding mode, and the blocking piece (12) is used for sealing high-pressure gas in the gas cylinder body (13); the gas cylinder valve body (10) is arranged on the outer side of the blocking piece (12), one end of the gas cylinder valve body (10) is in sealing connection with the opening of the gas cylinder body (13) on the outer side of the blocking piece (12), and the other end of the gas cylinder valve body is in sealing connection with the gas cylinder breakdown mechanism and the firing mechanism in sequence; the firing mechanism is used for triggering the gas cylinder breakdown mechanism to act so as to puncture the blocking piece (12) and release high-pressure gas in the gas cylinder body (13).)

1. An air source for emergency breathing is characterized by comprising an air bottle body (13), a blocking piece (12), an air bottle valve body (10), an air bottle breakdown mechanism and a firing mechanism;

the gas cylinder body (13) is a high-pressure gas cylinder, the blocking piece (12) is arranged at the opening of the gas cylinder body (13) in a welding mode, and the blocking piece (12) is used for sealing high-pressure gas in the gas cylinder body (13);

the gas cylinder valve body (10) is arranged on the outer side of the blocking piece (12), one end of the gas cylinder valve body (10) is in sealing connection with the opening of the gas cylinder body (13) on the outer side of the blocking piece (12), and the other end of the gas cylinder valve body is in sealing connection with the gas cylinder breakdown mechanism and the firing mechanism in sequence;

the firing mechanism is used for triggering the gas cylinder breakdown mechanism to act so as to puncture the blocking piece (12) and release high-pressure gas in the gas cylinder body (13).

2. The source of emergency breathing gas according to claim 1, wherein the side wall of the gas cylinder valve body (10) is provided with a gas outlet (14) for forming a high-pressure gas escape passage when the blocking piece (12) is punctured, so that the high-pressure gas forms the source of emergency breathing gas.

3. The gas source for emergency breathing according to claim 2, wherein the gas cylinder puncture mechanism comprises a movable seat and a puncture needle (9) which are connected into a whole, the movable seat is connected with the inner side wall of the gas cylinder valve body (10) and moves up and down along the inner side wall of the gas cylinder valve body (10) under the action of a driving force; the puncture needle (9) faces the blocking piece (12), and the front end of the puncture needle (9) facing the blocking piece (12) is in an inclined cone shape.

4. An emergency breathing gas source according to claim 3 wherein the firing mechanism comprises an ignition bayonet (1), an ignition spring (2), a firing pin (3), an ignition cap (4), an ignition base (5) and an igniter (6);

one end of the ignition base (5) is hermetically connected with the side wall of the gas cylinder valve body (10), and the other end of the ignition base is connected with the ignition cap (4);

the igniter (6), the firing pin (3) and the ignition spring (2) are sequentially arranged in a cavity formed by the ignition base (5) and the ignition cap (4) and are all positioned on the central line of the gas cylinder breakdown mechanism in the motion direction;

the firing pin (3) comprises a striking end and a through hole end, the tip end of the striking end faces the igniter (6), and the through hole end is provided with a through hole matched with the ignition bayonet lock (1); the firing spring (2) is sleeved on the outer side of the firing pin (3), the through hole end of the firing pin (3) extends out of the top end of the firing cap (4) and is connected with the firing bayonet lock (1) in a state that the firing spring (2) is compressed, and the distance between the tip of the striking end of the firing pin (3) and the igniter (6) is smaller than the compressed height of the firing spring (2).

5. An emergency breathing gas source according to claim 3 wherein the gas outlet (14) is provided in the side wall of the cylinder valve body (10) between the moveable seat of the cylinder puncture mechanism and the mouth of the cylinder body (13).

6. An emergency breathing gas source according to claim 3, further comprising a first sealing ring (11), a second sealing ring (8);

the first sealing ring (11) is arranged at the connecting part of the gas cylinder valve body (10) and the blocking piece (12);

the second sealing ring (8) is arranged between the movable seat of the gas cylinder breakdown mechanism and the inner side wall of the gas cylinder valve body (10).

7. An emergency breathing gas source according to claim 4 further comprising a high pressure sealing gasket (7), the high pressure sealing gasket (7) being disposed at the junction of the ignition base (5), the gas cylinder valve body (10) and the movable seat of the gas cylinder puncture mechanism.

8. An emergency breathing gas source according to claim 3 wherein the igniter (6) is sealed to the ignition base (5) by an interference fit; the igniter (6) is provided with an exhaust hole, and the aperture range of the exhaust hole is 0.1mm-1 mm.

9. A source of emergency breathing gas according to claim 1, wherein the gas inside the cylinder body (13) is compressed oxygen or compressed air.

Technical Field

The invention belongs to the technical field of emergency lifesaving, and particularly relates to an air source for emergency breathing.

Background

The oxygen supply system commonly used at present is generally provided with a set of high-pressure gas cylinders as an emergency gas source for pilots during catapulting parachuting. The gas sealing is realized by adopting structures such as sealing rings and the like among the high-pressure gas cylinder, the cylinder valve and each valve, but the gas leakage problem cannot be completely avoided, and meanwhile, the gas leakage is aggravated under the mechanical action of vibration and the like in the aircraft flying process. Therefore, routine inspections of the emergency gas supply are required before and after each flight, and in addition, the high pressure gas cylinder is replenished with gas when the gas pressure in the cylinder falls to a lower limit, thereby causing cumbersome routine maintenance.

In addition, the field of coal mine lifesaving and the like needs to be provided with an emergency respirator, the existing respirator is also in a high-pressure gas cylinder gas supply mode, and the problems of high leakage rate, complex routine maintenance and the like exist.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an air source for emergency breathing, which realizes the sealing of the opening part of an air bottle by adopting a welding mode, avoids the leakage problem caused by sealing by using a sealing ring in the prior art, realizes the decryption sealing of the opening part of the air bottle by adopting a designed air bottle breakdown mechanism and a trigger mechanism, more preferably adopts the mode that an ignition clamping pin is pulled out to drive the trigger mechanism to trigger the air bottle breakdown mechanism to puncture a blocking piece welded at the opening part of the air bottle, and has simple and reliable operation.

The invention has the technical scheme that the gas source for emergency breathing comprises a gas cylinder body, a plug gas cylinder valve body, a gas cylinder breakdown mechanism and a firing mechanism; the gas cylinder body is a high-pressure gas cylinder, the blocking piece is arranged at the opening of the gas cylinder body in a welding mode and is used for sealing high-pressure gas in the gas cylinder body; the gas cylinder valve body is arranged on the outer side of the blocking piece, one end of the gas cylinder valve body is hermetically connected with the opening of the gas cylinder body on the outer side of the blocking piece, and the other end of the gas cylinder valve body is hermetically connected with the gas cylinder breakdown mechanism and the firing mechanism in sequence; the firing mechanism is used for triggering the gas cylinder breakdown mechanism to act so as to puncture the plug sheet and release high-pressure gas in the gas cylinder body.

Drawings

These and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a device before a plug of an air source for emergency breathing is not punctured in the embodiment of the invention.

Fig. 2 is a schematic structural diagram of a device for puncturing a blocking piece of an emergency breathing air source according to an embodiment of the invention.

Fig. 3 is a schematic structural diagram of a device after a high-pressure gas escapes after a plug sheet of an emergency breathing gas source is punctured according to an embodiment of the invention.

Fig. 4 is a schematic partial view of an igniter portion of an emergency breathing gas source in accordance with an embodiment of the invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings and the detailed description of the invention.