JP2003147776A - Respiration system in large depth compressed air caisson - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe respiration system for a worker working in a high pressure environment in a compressed air caisson construction method. SOLUTION: This respiration system in a compressed air caisson is characterized in that a control room is arranged outside the compressed air caisson, and the control room has the function of monitoring pressure of a man lock of the compressed air caisson, a gas component, and a state of the worker in real time, the function of automatically increasing-reducing pressure in the man lock of the compressed air caisson, the function of executing a pressure reducing program according to work time of the worker in the caisson and pressure in the caisson, the function of communicating with the worker in the man lock, the function of controlling quality of mixed gas and high oxygen partial pressure gas supplied to a mixed gas respiration mask and a high oxygen partial pressure gas respiration mask in the man lock, and the dwelling function of a controller, and collectively and intensively controls safety of the worker in the high pressure environment in the compressed air caisson.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breathing method and a management system for ensuring the safety of workers who work in a high pressure environment in a pressure air container.

[0002]

2. Description of the Related Art In recent years, attention has been paid to the use of deep underground in the technical field of civil engineering and construction, and for this reason, a deep-sea underground excavation method has been widely practiced. The compressed air submersible method is to perform work in a dry environment by maintaining the environment pressure of the work room and the groundwater pressure in equilibrium by sending compressed air into the work room provided at the bottom of the box to create a high pressure environment. It is possible. In the pneumatic submersible method for working in a high-pressure environment while breathing compressed air, when the atmospheric pressure in the work environment exceeds 0.3 MPa (gauge pressure), various obstacles such as hyperbaric disorder suddenly increase. In recent deep underground drilling, the atmospheric pressure of the working environment reaches 0.7 MPa (gauge pressure). As a measure for ensuring the safety of workers who work in such a high-pressure environment, workers in a work chamber whose atmospheric pressure exceeds 0.3 MPa (gauge pressure) are mixed gas such as (helium + nitrogen +
(Oxygen) or (neon + nitrogen + oxygen) or (hydrogen + nitrogen +
Oxygen ternary gas or (helium + oxygen) or (neon +
It is known to use a binary gas such as (oxygen) or (hydrogen + oxygen) as breathing gas. Since these mixed gases are expensive, compressed air is blown into the manlock and the inside of the enclosure to create a high-pressure environment. The working room in the submersible operates the excavating machine remotely from the operation room on the ground, and constantly supplies compressed air for the purpose of keeping the compressed air pressure constant in order to create a working environment with good visibility. The manlock and the worker inside the submarine at the time of pressurization usually wear a mixed gas breathing mask that communicates with a mixed gas line supplied from the outside and breathe the mixed gas. Further, it is also practiced to work in a submerged enclosure under a high pressure environment by breathing high pressure air in the pneumatic submerged enclosure.

[0003] In the process of returning to the atmospheric pressure environment after the worker has worked in a submerged box under a high atmospheric pressure environment for a certain period of time, the manlock is shut off from the working chamber and the environment of the worker is gradually reduced in the manlock. Then, the atmospheric pressure is restored. Further, in the pneumatic work that exceeds a pressure of 0.1 MPa (gauge pressure) such as the pneumatic submersible method, it is obligatory that the re-pressurization chamber (hospital lock) can be used for the treatment when the hypertension disorder occurs. .

In the process of decompressing the environment of the worker in the manlock after finishing the hyperbaric work while breathing the mixed gas and in the process of treating the decompression sickness in the recompression chamber, the high oxygen partial pressure gas and air are supplied. If you breathe alternately, it has the effect of promoting the discharge of nitrogen dissolved in the body to the outside of the body (oxygen window effect), which can prevent the onset of hypertension and shorten the time required for decompression, as well as enhance the therapeutic effect of hypertension. And is known to be an effective method. Even in the compressed air submersion method in which compressed air is breathed in the work room, the worker wears a high oxygen partial pressure gas breathing mask that communicates with the high oxygen partial pressure gas line that is supplied from outside and installed in Manlock. Wear it and breathe high oxygen partial pressure gas for a certain period of time, then remove the breathing mask and breathe high pressure air in the manlock for a certain period of time (hereinafter,
It is called "air break". ) Has been considered a method of repeating the cycle multiple times. This method is a safer method of decompressing, and even if decompression symptom develops during decompression, decompress while using high oxygen partial pressure gas breathing and air breathing together in Manlock, It can treat decompression sickness.

[0005]

Depressurization after working in a high-pressure environment is performed in a narrow man-rock, and the worker during depressurization is strained, so a safe and rational depressurization procedure is desired. . Conventionally, the decompression process was made into a manual, and the worker himself / herself carried out the attachment / detachment of the respiratory mask and the valve operation according to the manual. Therefore, there is a demand for the development of a breathing system that reduces the burden on the worker when carrying out the decompression program and secures the worker's safety in the pneumatic submersion for shortening the decompression time. In addition, conventionally, it has been proposed that a part of the depressurization process be managed by a computer.
There is no system to centrally control the decompression process, and it is desired to develop a safer decompression process management system for the pressure decompression process when the working pressure of the pressure decompression chamber becomes higher due to deep excavation.

It is an object of the present invention to provide a safe breathing system for workers who work in a high pressure environment in the deep pressure air submersion method which solves the above problems.

[0007]

In order to solve the above-mentioned problems, the present invention is constructed as follows.

A first aspect of the present invention is a breathing system in a deep pressure air submersion chamber, in which a constant decompression stop pressure is reached to atmospheric pressure in a decompression process in a manlock after working inside (outside) the pressure air submersion chamber. , A high-oxygen partial pressure gas breathing and a high-pressure air breathing in a pressurizing / depressurizing man-lock are alternately repeated for a predetermined time, and a depressurizing program is carried out. It is a decompression program obtained by calculation by inputting as data to a computer, and is characterized in that various operations, instructions and controls are automatically executed by the decompression program.

A second aspect of the present invention is characterized in that, in the breathing system of the deep pressure air submersible of the first aspect of the present invention, the work in the pressure air submersible is performed by a mixed gas respiration.

A third aspect of the invention is characterized in that, in the breathing system of the deep depth air pressure chamber of the first aspect, the work in the pressure pressure chamber is performed by high pressure air breathing.

According to a fourth aspect of the present invention, in the breathing system for a deep pressure air submersible according to any one of the first to third aspects, a control room is provided outside the pressure air submersible, and the control room is mounted on a mannequin. The function of monitoring the internal pressure, gas components and worker status in real time, the function of automatically increasing / decreasing the pressure in the man-lock installed in the pneumatic submersible, the working time of the operator in the pneumatic submarine and the pressure in the submarine. For carrying out a decompression program according to the above, a function for communicating with a worker in the manlock, a mixed gas and high oxygen supplied to the mixed gas breathing mask and high oxygen partial pressure gas breathing mask in the manlock It has the function of controlling the quality of the partial pressure gas and the function of living in the controller, and is characterized by collectively controlling the safety of workers under high pressure environment in the pressure enclosure.

[0012]

The decompression program in the man-lock is obtained by calculating the pressure in the pressure chamber and the working time in the pressure chamber by inputting it as data into the computer, and various operations, instructions and Control can be performed automatically, and various functions of the control room enable centralized control of the breathing system in the pressure submersible work, and the safety of workers who work in a high-pressure environment for deep underground excavation. Is secured.

[0013]

1 is a schematic view of an embodiment of a method for constructing a pressurized air submersion system relating to a breathing system in a deep pressure air submersion system of the present invention.
This will be described with reference to FIG. On the ceiling slab 3 of the work chamber 2 of the compressed air submersible 1, the lower end of the man shaft 4 for raising and lowering the worker communicating with the work chamber 2, the material communicating with the work chamber 2, the material for carrying out and transporting the excavated earth and sand. The lower end of the shaft 5 is fixed. As will be described later, the upper manlock 6 and the lower part 6 ′ may be provided on the upper end and the lower end of the man shaft 4, or only the upper manlock 6 may be provided on the upper end of the man shaft 4. In the space above the ceiling slab 3 of the compressed air submersible 1, when it is difficult to sink due to its own weight, load water 7 for submerging the compressed air submersible 1 is poured and drained. Also, due to the subsidence of the pneumatic submersion, there is also a case where forced propulsion is performed by a hydraulic jack that uses the ground anchor as a reaction force. Upper man rock 6
A pressure sensor 8, a gas component sensor 9, a television camera, and a pointing device 10 are installed in the lower manlock 6 ′. A high oxygen partial pressure gas breathing mask 11 is installed on the upper manlock 6, and a mixed gas breathing mask 12 is installed on the lower manlock 6 ′. The high oxygen partial pressure gas breathing mask 11 is provided with an exhaust pipe for discharging exhaled air to the outside of the upper manlock 6. Further, the upper manlock 6 and the lower manlock 6 ′ are provided with the compressed air supply source 13 and the opening adjustment valve V.
3. The exhaust valve V2 is connected while being connected via the compressed air pipeline 14 provided with the opening / closing valve V1 controlled by the computer 21.

On the other hand, a computer 21 is installed in the control room 20. Upper man lock 6 and lower man lock 6 '
The instruction device 10 in the inside is connected to the computer 21 of the control room 20 by a line, and according to the decompression program stored in the computer 21, putting on and taking off the respiratory mask,
This is for instructing the operator, such as an instruction to end the pressurization and the end of the depressurization, by letters or marks. In addition, a hospital lock 23 is installed on the surface of the earth for treatment of persons with high atmospheric pressure.

A high oxygen partial pressure gas breathing mask 11 is installed in the upper manlock 6, and a mixed gas breathing mask 12 is installed in the lower manlock 6 '. A breathing gas supply system to the breathing gas mask is provided. In order to explain the pressurizing / depressurizing system and equipment in the manlock, FIG. 2 shows a state where a mixed gas breathing mask 12 and a high oxygen partial pressure gas breathing mask 11 are installed in one manlock for convenience. To explain. The computer 21 includes the mixed gas supply source 15 and the mixed gas supply hose of the mixed gas breathing mask 12.
Is connected via a mixed gas pipeline provided with an on-off valve V4 that is controlled to be opened and closed by a high oxygen partial pressure gas supply source 18 and the high oxygen partial pressure gas supply hose of the high oxygen partial pressure gas breathing mask 11. It is connected via an on-off valve V5 that is controlled to open and close by the computer 21.

(First Embodiment) As a first embodiment of the present invention, a case where a worker wears a mixed gas breathing mask 12 and breathes a mixed gas to work in a working chamber 2 under a high pressure environment, This will be described with reference to FIG. An upper manlock 6 and a lower part 6 ′ are provided at the upper end and the lower end of the man shaft 4,
High oxygen partial pressure gas breathing mask 11 on upper man lock 6.
And the mixed gas breathing mask 12 is installed on the lower manlock 6 ′ at the lower end of the man shaft 4. The worker starts pressurization in the lower manlock 6 ′ of the man shaft 4, and when the lower manlock 6 ′ is pressurized to a predetermined pressure, the instruction device 10 instructs the mixed gas breathing mask 1 to be instructed.
2 is put on, the mixed gas breathing is started, and when the pressure of the lower manlock 6 ′ reaches the pressure in the working chamber 2, it moves from the lower manlock 6 ′ to the working chamber 2. Work room ceiling slab 3
A mixed gas pipe 19 is arranged in the
Is connected to a mixed gas supply source 15 through a mixed gas supply pipe 17 which is piped at a proper position in the submerged box, and the mixed gas pipe 1
9, one end of a mixed gas supply hose 16 provided in the working chamber 2 is connected, and the other end of the mixed gas supply hose 16 is connected to a ventilation socket equipped with an automatic opening / closing valve. When the work is completed, the operation returns to the lower manlock 6 ′, the pressure is reduced to a predetermined pressure, the mixed gas breathing mask 12 is removed according to the instruction of the indicating device 10, and the air in the lower manlock 6 ′ is breathed. The man shaft 4 is moved to enter the upper man lock 6, and a predetermined decompression program is executed in the upper man lock 6.

(Second Embodiment) As a second embodiment of the present invention, a case where an operator works by breathing high pressure air in a work chamber under a high pressure environment will be described with reference to FIG. An upper man lock 6 is provided on the upper end of the man shaft 4, and a high oxygen partial pressure gas respirator 11 is installed in the upper man lock 6. The worker starts pressurization in the upper manlock 6, and when the pressure in the upper manlock 6 reaches the pressure in the working chamber 2,
In response to an instruction from the instruction device 10 to end the pressurization, the operator moves to the work chamber 2 and breathes high-pressure air in the work chamber 2 under a high-pressure environment to perform the work.
The pressure reduction program in the upper man-lock 6 is reduced to a predetermined pressure, and the same pressure reduction program as in the case of mixed gas breathing is executed.

The time from the start of pressurization to the end of work and the start of depressurization is automatically input to the computer by sending a signal to start depressurization and the depressurization program is executed. In the decompression program, the pressure is reduced to 0.12 MPa (gauge pressure) in the upper man-lock 6 and the indicating device 1
From 0, "wearing a mask for breathing high oxygen partial pressure gas" is instructed, and the worker breathes high oxygen partial pressure gas. Thereafter, the high oxygen partial pressure gas breathing and the high pressure air breathing are alternately repeated according to an instruction from the pointing device 10 to continue for a predetermined time until the atmospheric pressure state.

Further, a track is provided below the working room ceiling slab 3, and the unmanned excavator 2 is movable on the track.
2 is installed, and the unmanned excavator 22 is operated by an operator by remote control according to an image from a television camera in the work room 2 to excavate the work room unmanned.

Next, the control room 20 of the present invention shown in FIG.
Is installed on the ground surface, and the computer 2 is installed in the control room 20.
1, a facility for the residence of a small number of controllers, a monitor TV that displays images from a plurality of TV cameras installed in the upper man-lock 6 and the lower man-rock 6'and in the working room 2,
A display panel for displaying the measurement data from the sensors 8 and 9 for measuring the pressure and gas components installed in the upper manlock 6 and the lower manlock 6 ′, the upper and lower manlocks 6 and 6 ′, and the work. A communication means for communicating with the workers in the room 2 and communicating with the outside is installed. Various functions of the control room 20 will be described.

(1) Automatic pressure increasing / decreasing function: Upper man-lock 6
When decompressing the inside of the lower manlock 6 ′, the on-off valve V1 of the compressed air pipeline 14 is closed and the opening degree of the exhaust valve V2 is adjusted by a signal from the computer 21,
The decompression rate and ventilation volume in the manlock are controlled. When the pressure is further maintained (pressurization or pressure reduction is temporarily stopped), the on-off valve V1 and the exhaust valve V2 of the compressed air pipeline 14 are closed or the compressed air pipeline 14 is adjusted by an operation signal from the computer 21. Adjustment valve V3 and exhaust valve V2 so that the amount of air passing through valve V3 and exhaust valve V2 becomes equal
The degree of opening is adjusted, and ventilation is performed with the pressure inside the upper manlock 6 and the lower manlock 6 ′ being kept constant.

(3) Execution function of automatic decompression program Workers in the upper manlock 6 or the lower manlock 6 '
Breath mixed gas or high-pressure air into a high-pressure enclosure.
Situation of pressurizing, holding pressure, depressurizing when venting and breathing gas off
The replacement situation will be described with reference to FIG. First, in case of mixed gas breathing
Is the lower man lock when the worker enters the submarine 1.
A worker enters the 6 ', and an air call is made in the lower manlock 6'.
While sucking (a), pressurize the inside of the lower manlock 6 '.
Start. From the pressure sensor 8 in the lower manlock 6 '
The data is sequentially input to the computer 21, and the lower manlo
The pressure in the lock 6'is a preset intermediate pressure P₁Reach
Then, from the computer 21 through the output data conversion circuit
And instruct the device 10 to "wear a mixed gas breathing mask."
Is sent, and the worker wears the mixed gas breathing mask 12
Pressurization is temporarily stopped during
Pressurized when wearing the gas 12 and starting mixed gas breathing (b)
For a predetermined time T₁Predetermined pressure P over time₂Until
Pressurize. Predetermined pressure P₂Is the same pressure as the working chamber 2
Is. The pressure in the lower manlock 6'is a predetermined pressure P ₂To
When the pressure sensor 8 detects that it has reached
The data is sent to the computer 21 of the control room 20
Based on this, the computer 21 determines that the finger in the lower man lock 6'is
Instruct the display device 10 to “end pressurization”, and the worker
Unlock the lock 6 ', move to the working room 2 and mix
Connect the mixed gas supply hose connected to the gas breathing mask 12
Breathing mixed gas while changing the connection to the mixed gas pipe 19
Perform work according to (b). In addition, the worker is in the work room 2.
Pressure P₂May work by breathing high pressure air.

In the case of the mixed gas breathing, the time T ₂ from the end of pressurization to the end of the work and the return to the lower manlock 6'and the start of depressurization while breathing the mixed gas is the time measuring means of the computer 21. Is recorded by. When pressure reduction is started and the pressure in the lower manlock 6 ′ reaches P ₃ ,
The display device 10 is instructed to release the mixed gas breathing mask 12, and the worker breathes air in the lower manlock 6 ′ to reduce the pressure in the manlock 6 ′ for a predetermined time, and then the manshaft 4 is pushed. Move and move into upper manlock 6. The worker enters the upper man lock 6, shields the upper man lock 6, and starts depressurization. At that time, the controller inputs the time T ₂ measured by the time measuring means and the pressure P _{2 in the} working chamber to the computer 21. The computer 21
A decompression program according to the input data of T ₂ and P ₂ is calculated and set. In the case of high pressure air breathing, pressurization and depressurization are performed in the upper manlock 6.

A decompression program after high-pressure work in the range of 0.29 to 0.40 MPa (gauge pressure) and its arithmetic system will be described. 1. When the working pressure and the working time are input, the computer determines the pressure reduction table pressure classification based on the input work pressure and selects the applicable pressure reduction table stored in the computer. 2. When the decompression start time is input, the working time range in the applicable decompression table is determined and the applicable decompression time is specified. 3. The pressure reduction is started up to the first pressure reduction stop pressure, and after the pressure reduction stop time, the pressure is reduced to the next pressure reduction stop pressure. 4. During the depressurization to a pressure of 0.15 to 0.12 MPa (gauge pressure), an instruction to prepare for wearing a mask for breathing a high oxygen partial pressure gas is given. 5. High oxygen partial pressure gas breathing is started at a pressure of 0.12 MPa (gauge pressure), and an alternate device such as high oxygen partial pressure gas breathing for 25 minutes and air break for 5 minutes is instructed from the indicator device linked to the timing means. 6. After that, the same procedure is repeated until the atmospheric pressure is reached.

The decompression program for mixed gas breathing and for high pressure air breathing is the same.

(4) Various monitor functions: Upper man lock 6
A plurality of TV cameras are installed in the lower man-lock 6'and the work room 2, and the images of the TV cameras are displayed on the monitor TV in the control room 20, and the upper man-lock 6 and the lower part 6'are A pressure sensor 8 and a gas component sensor 9 are installed respectively, and each sensor is connected to a computer 21 in a control room 20 by a line, and data from each sensor is
It is displayed in real time on the display panel of the control room 20 via the computer 21 to monitor the whole work and manage the safety of workers. The exhaled air at the time of breathing the high oxygen partial pressure gas is directly discharged to the outside of the upper man-lock 6, but the high oxygen partial pressure gas leaked from the mask due to a mask wearing defect or the like remains in the closed upper man-lock 6. However, it is feared that the decompression stop pressure is increased and an appropriate decompression time cannot be maintained.
Therefore, the pressure sensor 8 and the gas component sensor 9 in the upper manlock 6 detect the pressure and oxygen concentration in the upper manlock 6, and when a predetermined pressure and a predetermined oxygen concentration are reached, forced exhaust from the exhaust valve V _{2 is performed.} The pressure and oxygen concentration inside the man-lock 6 are kept constant.

(5) Communication command and control function: Communication means is installed in the control room 20, and the communication means in the control room is the upper man-lock 6 and the lower man-lock 6'and the transmitting and receiving antennas and lines installed in the working room 2. Are connected by. It is very difficult to have a conversation based on the pronunciation of the worker with the mixed gas breathing mask 12 or the high oxygen partial pressure gas breathing mask 11 mounted in the upper manlock 6, the lower manlock 6 ′ and the working chamber 2. Yes, in particular, when helium gas is used as a mixed gas, the vocalization frequency of humans changes and it becomes very difficult to hear, so when wearing a respiratory mask, a bone conduction microphone that picks up the bone conduction sound and converts it into sound, or By installing a microphone that applies artificial larynx technology such as a piezo microphone that picks up vocal cord vibration and converts it to voice, conversation between workers in the man lock and the work room, and a control member in the control room 20 with the worker Conversations with people can be done freely, information can be transmitted smoothly, and it contributes to safety management.
Further, a transmission / reception antenna is installed in the control room 20 to enable wireless communication with the outside.

(6) Timekeeping monitoring and recording function: When the depressurization program is executed, the working time of the worker in a high pressure environment, the time for depressurizing to a predetermined pressure, the time for holding the predetermined pressure,
When the pressure is reduced to a predetermined pressure, the time for alternately repeating high oxygen partial pressure gas breathing and air break is set and managed.

(7) Function for controlling quality of mixed gas and high oxygen partial pressure gas: The computer 21 of the control room 20 controls the pressures of the supply pipes of the mixed gas supply source 15 and the high oxygen partial pressure gas supply source 18, respectively. The quality of the gas supplied to the mixed gas breathing mask 12 and the high oxygen partial pressure gas breathing mask 11 by inputting the data from the sensor for detecting the gas component is controlled.

(8) Controller Living Function: The control room 20 is managed by a small number of control personnel, and the control room 20 is provided with facilities for the controller to live for a predetermined time.

[0031]

EFFECT OF THE INVENTION A decompression program in Manlock is obtained by calculating the pressure in the pressure chamber and the working time in the pressure chamber by inputting it to the computer as data.
The decompression program enables various operations, instructions and controls to be automatically carried out, and a safe breathing system for workers under high pressure can be achieved without imposing any burden on workers working under high pressure environment. Made possible In addition, the various functions of the control room enable centralized control of the respiratory system in a pressure air containment box, ensuring the safety of workers who work in a high-pressure environment for deep underground excavation.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a pressure air container of the present invention.

FIG. 2 is a schematic view showing a state of pressurization and depressurization in a manlock of a pneumatic air container of the present invention and a supply state of respiratory gas to a respiratory mask.

FIG. 3 is a schematic diagram showing a manlock in the case of breathing a mixed gas in a working chamber of a pressure air container according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram showing a manlock in the case of breathing high pressure air in a working chamber of a pressure air container according to a second embodiment of the present invention.

FIG. 5 is a schematic view showing a control room of a pressure air container of the present invention.

FIG. 6 is a diagram showing a breathing system during pressurization and depressurization according to the present invention.

[Explanation of symbols]

1: Pneumatic submarine 2: Working room 3: Ceiling slab 4: Man shaft 5: Material shaft 6: Upper man rock 6 ': Lower man rock 7: Water load 8: Pressure sensor 9: Gas component sensor 10: Pointing device 11: High oxygen partial pressure gas breathing mask 12: Mixed gas breathing mask 13: Compressed air source 14: compressed air pipeline 15: Mixed gas supply source 16: Mixed gas supply hose 17: Mixed gas supply path piped in the submarine 18: High oxygen partial pressure gas supply source 19: Mixed gas piping installed on the ceiling slab of a pneumatic enclosure 20: Control room 21: Computer 22: Unmanned excavator 23: Hospital Rock

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryoichi Suzuki             1-14 Iwamotocho, Kanda Iwamotocho, Chiyoda-ku, Tokyo             Company Shiraishi

Claims (4)

[Claims] 1. A high oxygen partial pressure gas respiration and a high pressure in the manlock during the depressurization process in the manlock after working inside (outside) the pneumatic submerged chamber until a constant decompression stop pressure reaches atmospheric pressure. A depressurization program that alternately repeats air breathing for a predetermined time is performed, and the depressurization program is the pressure in the pneumatic submerged chamber,
It is a decompression program obtained by calculating the working time in a pressure chamber by inputting it as data into a computer, and a large depth characterized by automatically performing various operations, instructions and controls by the decompression program. Breathing system in a pneumatic submersible. 2. The breathing system in a deep pressure air submersion system according to claim 1, wherein the work in the pressure air submersion chamber is performed by breathing a mixed gas. 3. The breathing system for a deep pressure air submersion system according to claim 1, wherein the work in the pressure air submersion chamber is performed by high pressure air breathing. 4. The respiratory system in deep gas caisson according to any one of claims 1 to 3, provided control room outside the gas caisson, the tube system chamber, the man in the lock mounted on gas caisson A function to monitor the pressure, gas components, and worker's condition in real time, a function to automatically increase or decrease the pressure in the manlock of the pneumatic submersible, a function of the worker's working time in the pneumatic submarine and the pressure in the pneumatic submarine. Functions for carrying out decompression programs, functions for communicating with workers in Manlock,
Mixed gas breathing mask and high oxygen partial pressure gas in man-lock The function to control the quality of the mixed gas and high oxygen partial pressure gas supplied to the respiratory mask, the function of living in the controller, and the high pressure in the pressure chamber. A breathing system in a deep pressure air submersion system, which centrally controls the safety of workers in an environment.