Safety protection system for simulating large-depth underwater fast floating training

Abstract

The invention discloses a safety protection system for simulating large-depth underwater fast floating training, which comprises a training cabin, an air supply pipeline, a water supply pipeline, an emergency water drainage pipeline and an exhaust pressure reduction pipeline, and is characterized in that the air supply pipeline, the water supply pipeline, the emergency water drainage pipeline and the exhaust pressure reduction pipeline are connected with the training cabin and are controlled by a system control unit through a control valve; the control unit is used for automatically controlling procedures such as pressurization and emergency pressure reduction. Compared with the prior art, the system has the beneficial effects that rapid and safe pressure reduction can be implemented on site through the system, rescue personnel outside a cylinder can rapidly open a lower cover after rescue personnel completes rapid floating on site and the pressure is reduced to normal pressure, so that the rescue personnel cannot suffer from decompression sickness due to long-time staying and cannot suffer from pulmonary barotrauma due to the fact that only a valve is opened and no control is achieved, and the service life of the rescue personnel is prolonged. The key problem that life safety of escape personnel is threatened during large-depth fast floating is solved, and a scientific pressure reduction mode better conforms to a human body pressure reduction curve.

Description

Technical Field

[0001] The invention relates to the technical field of escaping danger and saving life, in particular to a safety protection system for simulating deep-water fast-drifting training. Background Art

[0002] At present, there are generally two types of pressurization forms for the existing simulated underwater fast drift training devices in China, one is air pressurization and the other is water pressurization, both of which can realize simulated underwater fast drift training at various depths. The basic steps for implementing simulated underwater fast drift training are: (1) The escapee wears an escape suit and is ready; (2) The fast drift tube and its control device are ready and ready; (3) The escapee enters the fast drift tube; (4) The escape operator outside the tube first fills water into the fast drift tube to a certain height, then injects air to pressurize, and quickly pressurizes according to the pressurization curve set for the escape depth; (5) The escapee quickly adjusts the pressure in the fast drift tube. When the pressure reaches the specified escape depth, the pressure is balanced, and the operating support personnel open the upper cover of the fast drift tube; (6) The escapee in the fast drift tube disconnects the air supply valve and uses the buoyancy of the fast drift suit to float out of the water at a set speed.

[0003] Subject to the height constraints of large-scale escape towers on land, most of the existing onshore simulation deep-depth fast drift training systems use air pressurization to simulate the depth of the sea. The higher the air pressure, the more accurate the operation of the escape personnel and external security operators is required to ensure the safety of the fast drift training. Although emergency response plans and operating procedures are set for various emergency situations during the training process, there is still no very effective emergency response plan for emergencies under deep pressure. For example, when the escape personnel participate in deep underwater escape training at a depth of more than 100 meters, especially when the air cushion in the fast drift tube has been pressurized to a depth of more than 100 meters, if there is a situation such as the fast drift tube cover is stuck and cannot be opened, the fast drift escape process can no longer proceed normally and needs to be urgently terminated. In such an emergency, the time for emergency treatment is very precious. See Table 1 for details of the safe stay time of the human body under high pressure (including the pressurization time from normal pressure to the required depth). For example, the exposure time of 152 meters without decompression diving is 45 seconds, of which the pressurization time is 30 seconds, leaving a maximum of 10 seconds for treatment. If all decisions and treatments are made by personnel, the escapees will either suffer from severe decompression sickness or severe pulmonary barotrauma. It is also extremely difficult for the escapees to control the air intake operation to ensure normal breathing, and they face the dual threats of overpressure and suffocation. At the same time, the temperature rise in the fast floating cylinder due to the rapid compression of air also threatens the respiratory system of the escapees. The safety time limit for staying at a great depth is extremely strict. Therefore, every extra second for the escapees is dangerous, and it is even more impossible to stay in the cylinder for a long time waiting for rescue. At this time, if the decompression cannot be quickly carried out according to the human body's tolerance decompression curve, the life safety of the escapees will be fatally threatened.

[0004] Table 1: Reference table of exposure time for no-decompression diving at different depths depth Time limit 15 m 100 min 30 m 25 min 45 m 7 min 61 m 3 min 45 s 91 m 2 min 121 m 1 min 15 s 137 m 1 min 152 m 45 s Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a safety protection device for simulating deep and fast drifting training, which can realize fast and safe decompression on the spot in an emergency, so that the escapee can complete the fast drift on the spot. After the pressure is reduced to normal pressure, the rescuer outside the cylinder quickly opens the lower cover to implement emergency rescue. Through the action of the device, the escapee will not suffer from decompression sickness due to staying too long, nor will he suffer from pulmonary barotrauma due to opening the valve without control, so as to solve the key problem of threatening the life safety of the escapee during deep and fast drifting.

[0006] The present invention is implemented as follows: a safety protection system for simulating deep underwater fast drift training, comprising: The training cabin is a cylinder used for simulating underwater environment training. The cylinder has an upper cover and a lower cover. The upper cover is connected to the cylinder through a rotating shaft. A protrusion is provided on the rotating shaft. A cover opening sensor A and a cover closing sensor B are provided on the shaft seat and are located on the rotation path of the protrusion. A vent valve is provided on one side of the cylinder. An air supply pipeline is used to supply air to the training cabin to achieve air pressurization; Water supply pipeline, used to supply water to the training cabin and realize water pressurization; Emergency drainage pipeline, after the on-site decompression process in the cabin is implemented, the water is automatically discharged; The exhaust pressure relief pipeline is automatically exhausted after the in-situ pressure relief process in the cabin is implemented; The air supply pipeline, water supply pipeline, emergency drainage pipeline and exhaust pressure relief pipeline are connected to the training cabin and are controlled by the system control unit through the control valve; The system operation steps are as follows: S1, parameter setting: set the system depth according to the depth of the escape training; S2, after the trainee puts on the escape gear and enters the life-saving training cabin from the lower cover, the lower cover is closed; air and water are pressurized through the air supply pipeline and the water supply pipeline. When the pressure reaches the set depth, the upper cover is automatically opened, triggering the cover opening sensor A at the upper cover position to transmit data to the system control unit. At this time, the system does not start the in-situ decompression process in the cabin, and the trainee escapes from the upper cover of the training cabin to complete the training; S3: If the upper cover does not open automatically after the pressure is increased to the set depth in S2, the cover opening sensor A is triggered and the cover closing sensor B is triggered, the system immediately starts the in-situ decompression process in the starting cabin. The system automatically exhausts and drains air through the exhaust control valve and the drain control valve to reduce the pressure in the cabin.

[0007] Furthermore, the system sets the in-situ decompression process in the cabin to a uniform decompression rate, and sets the rate to a fixed value so that the rate conforms to the decompression curve of the human body.

[0008] Furthermore, the rate value is a floating rate of 2.4-3.3 meters per second, preferably a floating rate of 3 meters per second.

[0009] Furthermore, a pressure sensor C is provided in the cabin, and the pressure value is monitored in real time by the pressure sensor C. When the pressure value deviates, the system adjusts the drainage and exhaust volume in real time according to the difference to maintain the corresponding pressure value, so that the decompression process conforms to the human body's decompression curve.

[0010] Furthermore, a liquid level sensor is provided in the cabin to detect whether the water level in the cylinder has reached a water point.

[0011] Compared with the prior art, the beneficial effects of the present invention are: through the system, rapid and safe decompression can be implemented on-site, so that the escapees can complete fast drifting on the spot. After the decompression is reduced to normal pressure, the rescue personnel outside the cylinder quickly open the lower cover, so that the escapees will not suffer from decompression sickness due to staying too long, and will not suffer from pulmonary barotrauma due to only opening the valve without control, so as to solve the key problem of threatening the life safety of the escapees during fast drifting at a great depth, and the scientific decompression method is more in line with the human body's decompression curve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of a land-based simulated deep-depth fast drift training device.

[0014] Figure 2 It is a system structure diagram.

[0015] Figure 3 This is a simplified diagram of the controller.

[0016] Figure 4 It is the system operation flow chart.

[0017] Figure 5 It is a schematic diagram of the structure of the upper cover in the open state.

[0018] Figure 6 It is a schematic diagram of the structure of the upper cover in the closed state.

[0019] Figure 7 It is a schematic diagram of the structure of the intermediate state when the upper cover is opened.

[0020] Figure 8 yes Figure 7 A partial enlarged view of . DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1-8 As shown, a safety protection system for simulating deep underwater fast drift training: It includes a training cabin and a cylinder 1 for simulating underwater environment training. The cylinder 1 has an upper cover 11 and a lower cover 12. The upper cover is connected to the cylinder through a rotating shaft 13. The rotating shaft 13 is provided with a protrusion 10. The cover opening sensor A3 and the cover closing sensor B4 are arranged on the shaft seat 14 and are located on the rotation path of the protrusion 10. The cover opening sensor A3 and the cover closing sensor B4 are both contact sensors. When the protrusion 10 on the rotating shaft rotates with the rotating shaft, it is triggered when it contacts the cover opening sensor A3 or the cover closing sensor B4, and transmits a signal to the control system. A vent valve 7 is arranged on one side of the cylinder; a pressure sensor C is arranged in the cabin, and the pressure value is monitored in real time through the pressure sensor C. When the pressure value deviates, the system adjusts the drainage and exhaust volume in real time according to the difference to maintain the corresponding pressure value, so that the decompression process conforms to the human body decompression curve; a liquid level sensor is also arranged in the cabin to detect whether the water level in the cylinder has reached the water point; An air supply pipeline is used to supply air to the training cabin to achieve air pressurization; Water supply pipeline, used to supply water to the training cabin and realize water pressurization; Emergency drainage pipeline, after the on-site decompression process in the cabin is implemented, the water is automatically discharged; The exhaust pressure relief pipeline is automatically exhausted after the in-situ pressure relief process in the cabin is implemented; The air supply pipeline, water supply pipeline, emergency drainage pipeline and exhaust pressure relief pipeline are connected to the training cabin and are controlled by the system control unit through control valves. The emergency drainage pipeline and exhaust pressure relief pipeline are controlled by the drainage control valve 6 and the exhaust control valve 5 respectively.

[0023] See also Figure 4 Flowchart, the system operation steps are as follows: S1, parameter setting: set the parameters through the controller. During training, the controller ( Figure 3(as shown) should be placed in automatic mode. Manual mode is mainly used to test the working conditions of each controlled valve in the preparation stage. When organizing fast drift escape training, turn the power switch to 1, the automatic state mode to "automatic", and the other valves are placed at 0 (it is the same to place them at 0 or 1 in automatic mode, and the control knobs of the other valves do not work). Set the depth according to the depth of the escape training. For example, if you are escaping 150 meters underwater, set the depth to 150 meters. The water level is the air pressure. 10 meters is 0.1MPa, and 100 meters is 1MPa. Simulating fast drift means that the actual depth is not that deep, and the water depth is simulated by air pressure. The feelings of the trainees are the same. The water level monitoring point is when the liquid level sensor detects that water is added to this position, it stops adding water, and continues to pressurize the water to reach the set depth pressure value. Regardless of the set depth, water is added to the water level monitoring point.

[0024] S2, after the trainee puts on the escape gear and enters the life-saving training cabin from the lower cover, the lower cover is closed; air and water are pressurized through the air supply pipeline and the water supply pipeline. When the pressure reaches the set depth, the upper cover is automatically opened, triggering the cover opening sensor A at the upper cover position to transmit data to the system control unit. At this time, the system does not start the in-situ decompression process in the cabin, and the trainee escapes from the upper cover of the training cabin to complete the training; S3: If the upper cover does not open automatically after the pressure is increased to the set depth in S2, the cover opening sensor A is triggered and the cover closing sensor B is triggered, the system immediately starts the in-situ decompression process in the starting cabin. The system automatically exhausts and drains air through the exhaust control valve and the drain control valve to reduce the pressure in the cabin.

[0025] The system sets the in-situ decompression process in the cabin to uniform decompression, and sets the rate to a fixed value so that the rate conforms to the human body decompression curve. The rate value is an ascent rate of 2.4-3.3 meters per second, preferably an ascent rate of 3 meters per second.

[0026] A pressure sensor C is installed at the pressure detection point in the cabin to monitor the pressure value in real time. When the pressure value deviates, the system adjusts the drainage and exhaust volume in real time according to the difference to maintain the corresponding pressure value, so that the decompression process conforms to the human body's decompression curve.

[0027] The function of the vent valve is for normal fast drift. When the upper cover is opened normally, the personnel leave the upper cover normally, and then close the upper cover to prepare for the next person's training. It is opened when the fast drift tube is drained. Otherwise, the water in the tube cannot be drained if the vent valve is not opened.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety protection system for simulating deep underwater fast drift training, characterized in that: include: The training cabin is a cylinder used for simulating underwater environment training. The cylinder has an upper cover and a lower cover. The upper cover is connected to the cylinder through a rotating shaft. A protrusion is provided on the rotating shaft. A cover opening sensor A and a cover closing sensor B are provided on the shaft seat and are located on the rotation path of the protrusion. A vent valve is provided on one side of the cylinder. An air supply pipeline is used to supply air to the training cabin to achieve air pressurization; Water supply pipeline, used to supply water to the training cabin and realize water pressurization; Emergency drainage pipeline, after the on-site decompression process in the cabin is implemented, the water is automatically discharged; The exhaust pressure relief pipeline is automatically exhausted after the in-situ pressure relief process in the cabin is implemented; The air supply pipeline, water supply pipeline, emergency drainage pipeline and exhaust pressure relief pipeline are connected to the training cabin and are controlled by the system control unit through the control valve; The system operation steps are as follows: S1, parameter setting: set the system depth according to the depth of the escape training; S2, after the trainee puts on the escape gear and enters the life-saving training cabin from the lower cover, the lower cover is closed; air and water are pressurized through the air supply pipeline and the water supply pipeline. When the pressure reaches the set depth, the upper cover is automatically opened, triggering the cover opening sensor A at the upper cover position to transmit data to the system control unit. At this time, the system does not start the in-situ decompression process in the cabin, and the trainee escapes from the upper cover of the training cabin to complete the training; S3: If, after the pressure is increased to the set depth in S2, the upper cover does not open automatically, the cover opening sensor A is not triggered, and the cover closing sensor B is triggered, the system immediately starts the in-situ decompression process in the cabin. The system automatically exhausts and drains air through the exhaust control valve and the drain control valve to reduce the pressure in the cabin.

2. The safety protection system for simulating deep underwater fast drift training according to claim 1 is characterized in that: The system sets the in-situ decompression process in the cabin to uniform decompression, and sets the rate to a fixed value so that the rate conforms to the human body's decompression curve.

3. The safety protection system for simulating deep underwater fast drift training according to claim 2 is characterized in that: The speed value is 2.4-3.3 meters per second floating speed.

4. The safety protection system for simulating deep underwater fast drift training according to claim 3 is characterized in that: The speed value is 3 meters per second floating speed.

5. The safety protection system for simulating deep underwater fast drift training according to claim 1 is characterized in that: A pressure sensor C is installed in the cabin, which monitors the pressure value in real time. When the pressure value deviates, the system adjusts the drainage and exhaust volume in real time according to the difference to maintain the corresponding pressure value, so that the decompression process conforms to the human body's decompression curve.

6. The safety protection system for simulating deep underwater fast drift training according to claim 1, characterized in that: A liquid level sensor is also installed in the cabin to detect whether the water level in the cylinder has reached the water point.

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