Electric control type constant oxygen partial pressure closed diving respirator system

Abstract

The invention discloses an electric control type constant oxygen partial pressure closed diving respirator system which comprises an air supply subsystem, a breathing circulation subsystem and an electric control subsystem. The air supply subsystem comprises an oxygen supply system and a diluted gas supply system, the breathing circulation subsystem comprises a breathing circulation pipeline and a carbon dioxide absorbent tank connected in the breathing circulation pipeline in series, and the electric control subsystem comprises an oxygen supplementing electromagnetic valve installed between the oxygen supply system and the breathing circulation pipeline. The gas sensor is used for collecting gas parameters in a breathing circulation pipeline, and the display device, the control panel and the power source are connected with the oxygen supplementing electromagnetic valve and the gas sensor. The oxygen supply can be accurately controlled, the adjustability is high, the response is quick, the stability is good, meanwhile, information can be detected and displayed in real time, and the use safety and comfort are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of diving equipment, and in particular to an electronically controlled constant oxygen partial pressure closed-circuit diving breathing apparatus system. Background Art

[0002] Traditional diving respirators use cylinders to quantitatively supply oxygen, but the oxygen concentration in the cylinders is fixed and cannot be adjusted according to different depths and needs. In certain specific environments, such as high altitude areas, deep diving, scientific research and investigation, etc., it is necessary to accurately control the oxygen partial pressure. Due to the particularity of underwater missions, the diving respirators worn must be highly concealed and have a long life support time, prevent interference from aquatic organisms, and improve the safety of divers. Therefore, the respirators worn by divers usually use closed or semi-closed respirators. In comparison, closed respirators have the highest concealment, less noise, and basically do not discharge bubbles in the water. Since the gas is basically not wasted, under the same conditions, the life support time is longer; although traditional mechanical closed respirators can recycle exhaled exhaust gas, making the use time longer, since mechanical closed respirators can only passively supply air and cannot adjust the oxygen partial pressure, the use depth is limited and the use time is reduced. Therefore, in order to improve the safety and comfort of divers, it is very necessary to develop a diving respirator that can adjust the oxygen partial pressure. Summary of the invention

[0003] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an electronically controlled constant oxygen partial pressure closed-circuit submersible respirator system, which solves the problems of the prior art that the prior art is difficult to adjust and has poor safety and comfort.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: An electrically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system, comprising an air supply subsystem, a breathing circulation subsystem and an electrical control subsystem; The gas supply subsystem includes an oxygen supply system and a dilution gas supply system, which are connected to the respiratory circulatory system and are used to supply oxygen and dilution gas to the respiratory circulatory system respectively; The breathing circulation subsystem comprises a breathing circulation pipeline and a carbon dioxide absorbent tank connected in series in the breathing circulation pipeline, and the oxygen supply system and the dilution gas supply system are connected to the breathing circulation pipeline; The electronic control subsystem includes an oxygen supplementation electromagnetic valve installed between the oxygen supply system and the breathing circulation pipeline, a gas sensor for collecting gas parameters in the breathing circulation pipeline, a depth sensor for collecting diving depth, and a display device, a control panel and a power supply connected to the oxygen supplementation electromagnetic valve and the gas sensor.

[0005] As an optimization, the oxygen supply system includes a high-pressure oxygen cylinder, an oxygen pressure gauge and an oxygen combination valve are installed at the gas outlet of the high-pressure oxygen cylinder, and the gas outlet of the oxygen combination valve is connected to the oxygen supplementation solenoid valve.

[0006] As an optimization, the dilution gas supply system includes a high-pressure dilution gas cylinder, the gas outlet of which is equipped with a dilution gas pressure gauge and a dilution gas combination valve, and the gas outlet of the dilution gas combination valve is connected to the respiratory circulation system.

[0007] As an optimization, the high-pressure dilution gas cylinder is filled with air or a mixed gas of air and oxygen or a three-mixed gas.

[0008] As an optimization, the breathing circulation circuit includes an inhalation bag and an exhalation bag, and a breathing conversion valve is provided between the air outlet end of the inhalation bag and the air inlet end of the exhalation bag, the breathing conversion valve is connected to the mouthpiece, the air inlet end of the inhalation bag is connected to the air outlet end of the carbon dioxide absorbent tank through a first circulation circuit, and the air outlet end of the exhalation bag is connected to the air inlet end of the carbon dioxide absorbent tank through a second circulation circuit.

[0009] As an optimization, the air suction bag is provided with an automatic air supply valve and a manual air supply valve, and the air outlet end of the dilution gas combination valve is connected to the automatic air supply valve and the manual air supply valve respectively.

[0010] As an optimization, the exhalation bag is provided with a manual oxygen supplementation valve and an exhaust / safety valve, and the manual oxygen supplementation valve is connected to the air outlet end of the oxygen combination valve.

[0011] As an optimization, the gas sensor includes one or more of an oxygen concentration sensor, a carbon dioxide concentration sensor, a temperature sensor, and a pressure sensor.

[0012] Compared with the prior art, this application has the following beneficial effects: 1. Accurately control oxygen supply: The oxygen partial pressure in the respirator circuit can be accurately calculated and controlled according to the diver's depth and needs. By real-time monitoring and adjusting the oxygen supply, it ensures that divers can still get appropriate oxygen supply at different depths.

[0013] 2. Strong adjustability: Due to the use of an electronic system, the constant oxygen partial pressure value can be flexibly set according to specific environmental requirements or individual differences to meet the needs of different groups of people and diving.

[0014] 3. Fast response and good stability: The electronic control technology has the characteristics of fast response and can adjust the oxygen partial pressure in the breathing gas in a short time. At the same time, the system has good stability and can continuously maintain a constant oxygen supply to avoid the impact of drastic fluctuations on divers.

[0015] 4. Real-time monitoring and information display: Oxygen partial pressure monitoring function. Oxygen pressure is the most important indicator during diving. By monitoring oxygen partial pressure, divers can understand their oxygen supply at any time and make corresponding adjustments; carbon dioxide monitoring function. Too high carbon dioxide concentration can also cause carbon dioxide poisoning, so the constant oxygen partial pressure electronic control system contains carbon dioxide filtering and monitoring functions to prompt divers with safety information in real time; depth information monitoring. Divers should observe their depth in real time to make arrangements for diving plans and subsequent decompression. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a system schematic diagram of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] For specific implementation: see Figure 1 , Divers face the risk of oxygen poisoning and hypoxia poisoning when diving in the deep sea, which limits their diving depth and time. In order to solve this problem, it is necessary to solve how to control the oxygen partial pressure in the diver's breathing gas. By adjusting the oxygen concentration in the breathing gas, the risk of hyperbaric oxygen poisoning and hypoxia poisoning can be reduced, and longer diving time can be provided. However, open respirators, semi-closed respirators and mechanical closed respirators can only supply oxygen passively, and the oxygen concentration in the cylinder is constant. Divers breathe oxygen with a certain concentration during diving activities. When the depth changes, the oxygen partial pressure will change. Low oxygen partial pressure will cause "hypoxia", and too high oxygen partial pressure will cause "oxygen poisoning". The constant oxygen partial pressure control system is a solenoid valve that controls the cylinder to release oxygen, so that the oxygen partial pressure in the breathing circuit remains constant.

[0019] Specifically, the present application provides an electronically controlled constant oxygen partial pressure closed-circuit submersible breathing apparatus system, comprising an air supply subsystem, a breathing circulation subsystem and an electronic control subsystem.

[0020] The gas supply subsystem includes an oxygen supply system and a dilution gas supply system, which are connected to the respiratory circulation system and are used to supply oxygen and dilution gas to the respiratory circulation system, respectively. Specifically, the oxygen supply system includes a high-pressure oxygen cylinder, the gas outlet of which is equipped with an oxygen pressure gauge and an oxygen combination valve, and the gas outlet of the oxygen combination valve is connected to an oxygen supplement solenoid valve. The dilution gas supply system includes a high-pressure dilution gas cylinder, the gas outlet of which is equipped with a dilution gas pressure gauge and a dilution gas combination valve, and the gas outlet of the dilution gas combination valve is connected to the respiratory circulation system. The high-pressure dilution gas cylinder can be filled with air or a mixed gas of air and oxygen or a trimix as required, wherein the trimix is ​​a mixed gas used for diving, mainly composed of oxygen, nitrogen and helium in a specific proportion. Its main purpose is to reduce the risk of nitrogen narcosis during diving and improve the safety and clarity of thinking of divers in deep water environments.

[0021] Specifically, the gas supply subsystem mainly reduces the pressure of the high-pressure gas carried, and automatically provides oxygen and dilution gas according to the needs of the system. The gas supply subsystem is mainly composed of two independent gas supply control valve groups, including high-efficiency oxygen supply and control, and dilution gas supply and control. In terms of oxygen supply and control, it consists of high-pressure oxygen cylinder components (including high-pressure oxygen cylinder valves), oxygen pressure reducers, oxygen supply solenoid valves, and corresponding pipelines. In terms of dilution gas supply and control, it consists of high-pressure dilution gas cylinder components (including cylinder valves), mixed gas pressure reducers, automatic air replenishment valves, manual air replenishment valves, and corresponding pipelines.

[0022] The breathing circulation subsystem includes a breathing circulation pipeline and a carbon dioxide absorbent tank connected in series in the breathing circulation pipeline, and the oxygen supply system and the dilution gas supply system are connected to the breathing circulation pipeline. The breathing circulation pipeline includes an inhalation bag and an exhalation bag, and a breathing conversion valve is provided between the air outlet end of the inhalation bag and the air inlet end of the exhalation bag. The breathing conversion valve is connected to the mouthpiece, and the air inlet end of the inhalation bag is connected to the air outlet end of the carbon dioxide absorbent tank through a first circulation pipeline, and the air outlet end of the exhalation bag is connected to the air inlet end of the carbon dioxide absorbent tank through a second circulation pipeline. The inhalation bag is provided with an automatic air supply valve and a manual air supply valve, and the air outlet end of the dilution gas combination valve is respectively connected to the automatic air supply valve and the manual air supply valve. The exhalation bag is provided with a manual oxygen supply valve and an exhaust / safety valve, and the manual oxygen supply valve is connected to the air outlet end of the oxygen combination valve.

[0023] Specifically, the breathing circulation subsystem uses the principle of a closed respirator to allow the exhaled gas to enter the inhalation pipeline after passing through a carbon dioxide absorbent, and after replenishing fresh oxygen, it can be used again by the diver. This greatly improves the utilization rate of the gas, can reduce the amount of gas carried, and prolongs the use time. At the same time, since no gas is discharged into the water when the respirator is used in water, no bubbles are generated, and the concealment is better. The breathing circulation subsystem mainly includes a breathing mouthpiece, a conversion valve, an exhalation hose, a carbon dioxide absorbent tank, a breathing airbag, an exhaust safety valve, an inhalation hose, etc.

[0024] The electric control subsystem includes an oxygen supplementation electromagnetic valve installed between the oxygen supply system and the breathing circulation pipeline, a gas sensor for collecting gas parameters in the breathing circulation pipeline, and a depth sensor for collecting diving depth. The depth sensor obtains the diving depth by sensing the external water pressure and can also be used to sense parameters such as water temperature, as well as a display device, a control panel and a power supply connected to the oxygen supplementation electromagnetic valve and the gas sensor. The gas sensor includes one or more of an oxygen concentration (or partial pressure) sensor, a carbon dioxide concentration (or partial pressure) sensor, a temperature sensor, and a pressure sensor.

[0025] Specifically, the electronic control subsystem mainly collects data signals from sensors, processes the data signals using the solution control module, performs scientific calculations based on the mathematical model established by analysis, and displays key information such as oxygen partial pressure, carbon dioxide partial pressure, diving depth, and diving time in real time on the display according to the data display module signal. The display interface and diving parameters can be easily switched through the buttons on the display. At the same time, the oxygen supplement solenoid valve is switched on and off and the switching frequency is controlled according to the signal of the main control module to ensure that the oxygen partial pressure in the system is constant. At the same time, the data is sent to the oxygen partial pressure monitoring module, and the key information such as oxygen partial pressure, carbon dioxide partial pressure, diving depth, and diving time are displayed in real time on the display, and an alarm is issued for abnormal situations such as oxygen partial pressure exceeding the safety threshold and depth changes too fast. The buttons on the monitor can easily switch the display interface, set diving parameters, and calibrate the equipment.

[0026] When in use, the high-pressure oxygen and mixed gas (air / oxygen / trimix) in the high-pressure diluent cylinder enter the medium-pressure pipeline after being decompressed by the pressure reducing valve. When the diver dives, the pressure in the respirator (inhalation bag) drops to a certain level, and the automatic air supply valve on the mixed gas pipeline opens to supply a large flow of air to the inhalation bag to ensure that the system pressure meets the underwater breathing environment. At the same time, when the electronic control system detects that the oxygen partial pressure of the inhalation system in the respirator system is higher than the set value, it will keep the oxygen supply solenoid valve closed or automatically reduce the oxygen supply. On the contrary, when the oxygen partial pressure in the system is lower than the set value, the oxygen supply solenoid valve will open, and fresh oxygen will be added to the respirator and enter the breathing circulation system. Through the above method, the oxygen partial pressure of the respirator is self-adapted. During the entire diving process, whether it is entering the water, diving, ascending, decompressing, or exiting the water, the respirator always keeps the oxygen partial pressure near the selected set point.

[0027] Fresh gas with carbon dioxide removed and oxygen added enters the mouthpiece of the respirator through the inhalation tube and air bag, and is inhaled by the diver; the mixed gas exhaled by the diver enters the carbon dioxide absorption tank through the conversion valve, exhalation pipeline, and air bag, and the exhaled mixed gas adsorbs carbon dioxide through the adsorbent and enters the inhalation end. According to actual needs and after replenishing fresh oxygen again, it enters the inhalation pipeline of the respirator to prepare for the next inhalation. In this process, the breathing mixture is constantly updated, changed, and kept circulating. During the entire diving process, the respirator monitors the oxygen partial pressure, carbon dioxide partial pressure, and the current environmental temperature, pressure (depth), etc. in real time.

[0028] Therefore, the present application can accurately control the oxygen supply: the oxygen partial pressure in the respirator circuit can be accurately calculated and controlled according to the diver's depth and needs. By real-time monitoring and adjusting the oxygen supply, it is ensured that the diver can still get the appropriate oxygen supply at different depths.

[0029] Strong adjustability: Due to the use of an electronic system, the constant oxygen partial pressure value can be flexibly set according to specific environmental requirements or individual differences to meet the needs of different people and diving.

[0030] Fast response and good stability: The electronic control technology has the characteristics of fast response, which can adjust the oxygen partial pressure in the breathing gas in a short time. At the same time, the system has good stability and can continuously maintain a constant oxygen supply to avoid the impact of drastic fluctuations on divers.

[0031] Real-time monitoring and information display: Oxygen partial pressure monitoring function, nutrient pressure is the most important indicator during diving. By monitoring oxygen partial pressure, divers can understand their oxygen supply at any time and make corresponding adjustments; carbon dioxide monitoring function, too high carbon dioxide concentration can also cause carbon dioxide poisoning, so the constant oxygen partial pressure electronic control system contains carbon dioxide filtering and monitoring functions, which can prompt divers with safety information in real time; depth information monitoring, divers should observe their depth in real time, and make arrangements for diving plans and subsequent decompression.

[0032] Although the embodiments of the present invention have been shown and described, it is apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and basis of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Therefore, the embodiments of the present invention are merely illustrative examples of the present invention. The embodiments of the present invention do not constitute limitations on the present invention from any point of view.

Claims

1. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system, characterized in that: Including air supply subsystem, breathing circulation subsystem and electronic control subsystem; The gas supply subsystem includes an oxygen supply system and a dilution gas supply system, which are connected to the respiratory circulatory system and are used to supply oxygen and dilution gas to the respiratory circulatory system respectively; The breathing circulation subsystem comprises a breathing circulation pipeline and a carbon dioxide absorbent tank connected in series in the breathing circulation pipeline, and the oxygen supply system and the dilution gas supply system are connected to the breathing circulation pipeline; The electronic control subsystem includes an oxygen supplementation electromagnetic valve installed between the oxygen supply system and the breathing circulation pipeline, a gas sensor for collecting gas parameters in the breathing circulation pipeline, a depth sensor for collecting diving depth, and a display device, a control panel and a power supply connected to the oxygen supplementation electromagnetic valve and the gas sensor.

2. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system according to claim 1, characterized in that: The oxygen supply system comprises a high-pressure oxygen cylinder, an oxygen pressure gauge and an oxygen combination valve are installed at the gas outlet of the high-pressure oxygen cylinder, and the gas outlet of the oxygen combination valve is connected to an oxygen supplementation solenoid valve.

3. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system according to claim 2, characterized in that: The dilution gas supply system comprises a high-pressure dilution gas cylinder, a dilution gas pressure gauge and a dilution gas combination valve are installed at the gas outlet of the high-pressure dilution gas cylinder, and the gas outlet of the dilution gas combination valve is connected to the respiratory circulation system.

4. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system according to claim 3, characterized in that: The high-pressure dilution gas cylinder is filled with air or a mixed gas of air and oxygen or a three-mixed gas.

5. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system according to claim 3, characterized in that: The breathing circulation pipeline includes an inhalation bag and an exhalation bag, a breathing conversion valve is provided between the air outlet end of the inhalation bag and the air inlet end of the exhalation bag, the breathing conversion valve is connected to the mouthpiece, the air inlet end of the inhalation bag is connected to the air outlet end of the carbon dioxide absorbent tank through a first circulation pipeline, and the air outlet end of the exhalation bag is connected to the air inlet end of the carbon dioxide absorbent tank through a second circulation pipeline.

6. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system according to claim 5, characterized in that: The air suction bag is provided with an automatic air supply valve and a manual air supply valve, and the air outlet end of the dilution gas combination valve is connected to the automatic air supply valve and the manual air supply valve respectively.

7. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system according to claim 5, characterized in that: The exhalation bag is provided with a manual oxygen supplementation valve and an exhaust / safety valve, and the manual oxygen supplementation valve is connected to the air outlet end of the oxygen combination valve.

8. An electronically controlled constant oxygen partial pressure closed circuit submersible breathing apparatus system according to claim 1, characterized in that: The gas sensor includes one or more of an oxygen concentration sensor, a carbon dioxide concentration sensor, a temperature sensor, and a pressure sensor.

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