CN101156819B - Medical air pressurized oxygen chamber with emergency system - Google Patents

Abstract

The invention relates to a medical use air pressure oxygen compartment with an emergent system, a control system for delivering fresh air for a breathing mask in the compartment under the condition that oxygen supply interruption is arranged outside a sealed compartment body, the upstream end of the control system for delivering the fresh air is connected to the rear part of the downstream end of an air supply regulating valve of the device for delivering compressed air for compartment, the upstream end of the control system for delivering the fresh air on the pipeline of the breathing mask for delivering pure oxygen is arranged at the rear part of the downstream end of the control device for delivering the fresh air outside the compartment, and connected with the breathing mask, and a control valve arranged outside the compartment is composed on the control system for delivering the fresh air. The invention can ensure that when a fire and other accident events occur in the medical use pressure oxygen compartment, the invention provides the fresh air for medical care personnel in the compartment, to prevent the personnel in the compartment from being dead due to stuffiness.

Description

Medical air pressurized oxygen chamber with emergency system

technical field

The invention relates to a medical device, in particular to a medical air pressurized oxygen chamber with an emergency system, which provides fresh air to the treatment personnel in the medical air pressurized oxygen chamber when an emergency such as a fire occurs in the medical air pressurized oxygen chamber.

Background technique

The medical air pressurized oxygen chamber is a kind of hyperbaric oxygen therapy equipment using compressed air as the pressurized medium. It has been used clinically in my country since the 1960s, and has been gradually promoted and popularized in the 1980s and 1990s. The so-called hyperbaric oxygen therapy is a method for patients to breathe pure oxygen in a specific environment greater than normal air pressure. The medical air pressurized oxygen chamber is a special equipment for hyperbaric oxygen therapy. According to the needs of users, medical The air pressurized oxygen chamber has a variety of specifications and models, and the number of people who can be treated at one time ranges from a few to dozens of people.

Since the cabin of the medical air pressurized oxygen cabin is a closed environment, and the air pressure inside the cabin is greater than the air pressure outside the cabin, once a fire or other emergency occurs in the cabin, according to the "Hyperbaric Oxygen Medicine Branch of the Chinese Medical Association" Medical Hyperbaric Oxygen Chamber Management and Application Specifications, the emergency plan for serious accidents such as fire in the medical air pressurized oxygen chamber is as follows: (1) quickly open the oxygen chamber decompression regulating valve and emergency pressure relief valve; (2) Immediately shut off the oxygen supply, pressurized air supply valve and power supply to the cabin, start the fire sprinkler system in the cabin; (3) open the cabin door, and organize personnel to rescue the people in the cabin. The national standard for medical air pressurized oxygen chambers (GB/T12130-2005) requires an emergency exhaust time of less than or equal to 2.5 minutes. The limited oxygen in the cabin and the release of carbon dioxide and toxic gas at the same time will cause hypoxia and poisoning of the personnel. If the treatment personnel in the cabin do not replenish fresh air in time in an environment where the pure oxygen source is cut off, it will be seriously life-threatening and cause major damage. Casualties. So far, because there is no complete and effective equipment and system to provide fresh air in the event of a fire in the medical air pressurized oxygen chamber, a large number of casualties have occurred in frequent major accidents in recent years. According to incomplete statistics, there are currently more than 30 reports of cabin fires during hyperbaric oxygen therapy in China, with nearly 90 casualties, including 6 fires in air pressurized cabins, 37 deaths and 3 injuries. Personnel died from asphyxiation. For this reason, experts in the hyperbaric oxygen industry have repeatedly called on the medical industry to solve these problems immediately, but there is currently no system or device that can be used to provide fresh air to the treatment personnel in the medical air pressurized oxygen chamber when a fire occurs .

Contents of the invention

The purpose of the present invention is to provide a medical air pressurized oxygen chamber with an emergency system, which can ensure that when emergencies such as fires occur in the cabin of the medical air pressurized oxygen chamber, fresh air is provided to the treatment personnel in the cabin, Prevent occupants from suffocating to death.

The purpose of the present invention is achieved like this:

A medical air pressurized oxygen chamber with an emergency system, including a sealable chamber body, a breathing mask for the treatment personnel in the chamber, and an external control valve on the pipeline for delivering pure oxygen to the breathing mask, which is regulated by air pressure Valve, pressurization regulating valve, air filter are connected to send compressed air into the cabin, cabin pressure regulating valve, pressure relief valve, fire sprinkler, etc. There is also an oxygen supply interruption outside the sealable cabin. The control system for delivering fresh air to the breathing mask under certain circumstances, the upstream end of the control system for delivering fresh air is connected to the downstream end of the air supply regulating valve of the device for delivering compressed air into the cabin, and the control system for delivering fresh air The downstream end is connected to the respiratory mask after the downstream end of the external total oxygen gradual opening valve provided on the pipeline for delivering pure oxygen to the breathing mask, and the control device for delivering fresh air includes a gradual opening valve located outside the cabin .

The control system for delivering fresh air is composed of an air filter, an air humidifier and an involute valve connected in sequence, wherein the input end of the air filter is connected to the output end of the compressed air supply device, and the output end of the involute valve is connected to the output end of the compressed air supply device. Breathing mask connection.

The downstream end of the involute valve is connected with the downstream end of the oxygen chamber pure oxygen control device and the breathing mask through a tee.

With the above scheme, the downstream end of the air pressure regulating valve is connected to the breathing mask through a control system that delivers fresh air. The gradual opening valve of the fresh air control system sends fresh air to the mask, so that the treatment personnel wearing the mask in the cabin can continue to breathe normally, and avoid suffocation caused by lack of oxygen in the cabin.

The control system for delivering fresh air consists of sequentially connected air filters, air humidifiers, and gradual opening valves. The air pressure regulating valve, the control system for delivering fresh air and the breathing mask form a system that can independently provide breathable air for the cabin crew. compressed air system. When the control system that delivers fresh air supplies fresh air to the breathing mask in the cabin, the air filter filters the air to remove impurities in the air and improve the air quality; the air humidifier processes the air entering the air humidifier , so that the air entering the breathing mask has a certain humidity, improving the breathing comfort of the treatment personnel in the cabin.

The downstream end of the gradual opening valve is connected with the upstream end of the total oxygen gradual opening valve and the breathing mask through a tee, and the gradual opening valve and the total oxygen gradual opening valve are installed side by side. At the same time, the gradual opening valve can be quickly and conveniently opened to reduce the residual pure oxygen between the gradual opening valve and the total oxygen gradual opening valve, and reduce the concentration of pure oxygen in the cabin, which is beneficial to fire extinguishing.

Because the present invention adds a control system for conveying fresh air to the existing medical air pressurized oxygen chamber, it has simple structure, convenient and reliable use. The control system for delivering fresh air is composed of conventional components, so it also has the advantage of low cost.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Accompanying drawing is a kind of preferred embodiment of the present invention.

In the accompanying drawings, 1 is a fire sprinkler, 2 is a fire quick-opening valve, 3 is a fire water inlet valve, 4 is a fire water storage tank pressurization valve, 5 is a fire water storage tank, 6 is an air pressure regulating valve, 7 is a Pressurization regulating valve, 8 is the air filter of the control system for delivering fresh air, 9 is the air filter of the oxygen cabin air pressurization system, 10 is the air humidifier, 11 is the gradual opening valve, 12 is the breathing mask, 13 is the total oxygen gradual opening valve, 14 is the oxygen delivery pipe, 15 is the decompression regulating valve, 16 is the emergency pressure relief valve outside the cabin, 17 is the cabin body, 18 is the emergency pressure relief valve in the cabin, and 19 is the cabin door 20 is an oxygen cabin pure oxygen control device, 21 is a fire sprinkler system, 22 is an oxygen cabin air pressurization control device, 23 is an emergency control system for delivering fresh air, and 24 is an oxygen cabin decompression control device.

Detailed ways

Example 1

Referring to the accompanying drawings, the medical air pressurized oxygen chamber emergency safety protection device of the present invention includes an oxygen chamber pure oxygen control device 20, a sprinkler fire extinguishing device 21, an oxygen chamber air pressurization control device 22, and a control device for delivering fresh air. System 23, oxygen chamber decompression control system 24, air pressurized oxygen chamber cabin body 17 and breathing mask 12 used by treatment personnel. Air compressor etc. (not shown in the figure) are connected with air pressure regulating valve 6, and the air pressure that air pressure regulating valve provides is basically the same as the pure oxygen pressure delivered to the breathing mask, which is 0.4-0.7Mpa, so as to ensure that when the pure oxygen is cut off. Oxygen, when switching to fresh air, oxygen inhalers will not have accidents due to changes in pressure. The downstream end of the air pressure regulating valve 6 is respectively connected with the fire-fighting water storage tank pressurizing valve 4 of the sprinkler fire extinguishing device 21, the air pressurizing regulating valve 7 of the oxygen chamber air pressurizing device 22, and the control system 23 for delivering fresh air through pipelines. Air filter 8 connections. Wherein the sprinkler fire extinguishing device 21 is made up of water storage tank 5, fire-fighting water inlet valve 3, fire-fighting quick-opening valve 2, sprinkler head 1 and water storage tank pressurization valve 4, and the upstream end of water storage tank pressurization valve 4 is connected with pipeline respectively The downstream end of the air pressure regulating valve 6 is connected to the water storage tank 5; the upstream end of the fire-fighting water inlet valve 3 is connected to the water source through a water pipe, and the downstream end of the fire-fighting water inlet valve 3 is connected to the water storage tank 5; the fire-fighting quick-opening valve 2 The two ends of each are connected to each other with the water storage tank 5 and the sprinkler 1 through water pipes respectively; the sprinkler 1 of the sprinkler fire extinguishing device is arranged in the cabin body 17, and when a fire occurs in the cabin, it is used for fire-fighting spray. The oxygen cabin air pressurization system 22 is made up of sequentially connected air pressurization regulating valve 7 and air filter 9, wherein, the upstream end of the air pressurization regulating valve 7 is connected with the downstream end of the air pressure regulating valve 6 through an air pipe, and the air The filter 9 communicates with the air pressurized oxygen chamber 17 through an air delivery pipe, and can provide air in the chamber. Outside the sealable cabin, there is also a control system for delivering fresh air to the breathing mask under the condition of interruption of oxygen supply. The control system 23 for delivering fresh air is composed of sequentially connected air filter 8, air humidifier 10 and gradually opening valve 11, wherein the upstream end of the air filter 8 is connected to the downstream end of the air pressure regulating valve 6, the downstream end of the involute valve 11 is connected to the breathing mask 12, and the output end of the involute valve 11 is respectively connected to the The downstream end of the oxygen chamber pure oxygen control device 20 is connected to the input end of the breathing mask 12 . The control system for delivering fresh air, the air pressure regulating valve and the breathing mask form a system that independently provides breathable compressed air to the cabin personnel. When the cabin pure oxygen control device is turned off, fresh air is provided to the breathing mask. The oxygen chamber pure oxygen control device 20 is connected to the breathing mask 12 through the oxygen delivery tube 14, and the oxygen chamber pure oxygen control device is a gradually opening valve 13 connected to an oxygen source at one end. In this embodiment, the involute valve 11 and the total oxygen involute valve 13 are installed side by side, so that the involute valve 11 is connected with the total oxygen involute valve 13 of the oxygen chamber operating platform at an optimal distance, so as to facilitate the rapid closure of oxygen at the same time. Source and open the involute valve 11, minimize the residual pure oxygen in the pipeline between the total oxygen involute valve 13 and the involute valve 11, avoid the combustion-supporting effect of oxygen, and simultaneously input fresh air into the breathing mask quickly. Oxygen chamber decompression control system 24 is connected with the cabin body by pipeline, and oxygen chamber decompression control system comprises oxygen chamber decompression device and the decompression regulating valve 15 that is installed outside the cabin, and oxygen chamber decompression device is installed by the emergency valve outside the cabin. The pressure relief valve 16 and the emergency pressure relief valve 18 installed in the cabin form, and when a fire breaks out in the cabin, it is used to control the pressure relief inside and outside the cabin. Both sides of the air pressurized oxygen chamber 17 are provided with hatches 19 to facilitate the entry and exit of treatment personnel and medical personnel. The cabin body of the present invention is a sealable medical air pressurized oxygen cabin when working.

The involute valve 11 of the control system for delivering fresh air of the present invention is normally closed. When a fire emergency occurs in the medical air pressurized oxygen cabin, quickly close the involute valve 13, cut off the oxygen delivered by the oxygen pipeline 14 to the breathing mask, reduce the concentration of pure oxygen in the oxygen cabin, and quickly open it to deliver fresh air. The gradually opening valve 11 of the air control system, the air pressure regulating valve 6 passes through the gradually opening valve 11, and fresh air is passed into the breathing mask 12 rapidly, and the personnel in the cabin continue to wear the breathing mask 12 to maintain normal air breathing. Close the pressurization regulating valve 7 and the oxygen cabin power supply, open the fire-fighting quick-opening valve 2, make the water in the water storage tank 5 spray from the nozzle 1 through the water pipe, and extinguish the flame in the cabin. Simultaneously open the decompression regulating valve 15 of the cabin body and the emergency pressure relief valves 18, 16 inside and outside the oxygen cabin to quickly reduce the high pressure of the environment in the oxygen cabin to atmospheric pressure. When the pressure of the environment in the cabin drops to the same as the atmospheric pressure, the cabin door 19 is opened, and the personnel in the cabin are quickly evacuated out of the cabin.

In the medical air pressurized oxygen chamber of the present invention, the water quantity in the fire-fighting water storage tank 5 of the sprinkler system 21 should be checked at any time to ensure that the water quantity in the fire-fighting water storage tank 5 meets the fire-extinguishing requirements. If the water yield is not enough, the water inlet valve 3 should be opened in time to add water; when extinguishing a fire, the pressurization valve 4 of the fire storage tank should be opened to ensure the pressure of the sprinkler head 1 when extinguishing the fire.

Example 2

The downstream end of the involute valve 11 of the control system for delivering fresh air of the present invention can also be directly connected with the breathing mask 12, and the downstream end of the oxygen chamber pure oxygen control device 20 is directly connected with the input end of the breathing mask 12. The gradual opening valve 11 and the total oxygen gradual opening valve 13 are also installed side by side, so that the gradual opening valve 11 is connected with the total oxygen gradual opening valve 13 of the oxygen chamber operating table with an optimal distance. Other structures of the medical air pressurized oxygen chamber in this embodiment are the same as in Embodiment 1, so this embodiment also has the features and advantages described in the present invention.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and improvements without departing from the spirit and scope of the present invention. Therefore The scope of protection of the present invention should be defined by the claims.

Claims (4)

1. medical air pressurization oxygen cabin with emergency system, comprise sealable cabin body, the treatment personnel's that are provided with in the cabin breathing mask, total out of my cabin oxygen involute valve of carrying the pipeline of pure oxygen to be provided with for breathing mask, by the air pressure control valve, the pressurization control valve, the compressed-air actuated device of conveying in the cabin that air filter is connected to form, oxygen cabin decompression valve, oxygen cabin relief valve, the fire extinguishing spray equipment, it is characterized in that: the external control system of under oxygen supply interruption situation, carrying fresh air that also is provided with to cabin internal respiration face shield in sealable cabin, the control system of this conveying fresh air is by another air filter that is linked in sequence, the involute valve that air saturation device and another are positioned at is out of my cabin formed, wherein, the air filter upstream extremity of this control system is connected with the downstream of air pressure control valve, the involute valve downstream end of this control system is connected with breathing mask after being connected in the downstream of described total oxygen involute valve out of my cabin.

2. the medical air pressurization oxygen cabin with emergency system according to claim 1 is characterized in that: the involute valve downstream end of described control system by threeway with downstream, the breathing mask of total oxygen involute valve are connected out of my cabin.

3. the medical air pressurization oxygen cabin with emergency system according to claim 1 is characterized in that: the involute valve of the control system of described conveying fresh air is a normally off.

4. the medical air pressurization oxygen cabin with emergency system according to claim 1 is characterized in that: the air pressure that the air pressure control valve provides is identical with the pure oxygen pressure of carrying to breathing mask.