A supply system for a thousand-meter-class saturation diving hyperbaric chamber

Abstract

The invention relates to a supply system for a kilometer-level saturation diving hyperbaric chamber, comprising a hyperbaric chamber, a supply system comprising a gas filter unit and a water supply system, wherein the gas filter unit is arranged outside the hyperbaric chamber, and the filter unit comprises a filter unit, a sodium-calcium filter unit, an activated carbon filter unit, two silica gel automatic regeneration filter units, and a heating unit B which are sequentially connected in series through pipelines; a high-pressure ball valve, a one-way valve, a pressure reducing valve, a pressure gauge, a flow regulating valve, and a temperature sensor are sequentially arranged on a discharge pipeline from the hyperbaric chamber to the filter unit, a bypass pipeline A is arranged on the discharge pipeline between the one-way valve and the pressure reducing valve, and a safety valve is installed on the pipeline; a helium concentration analyzer, a hydrogen concentration analyzer, and an oxygen concentration analyzer are serially installed on the bypass pipeline C; a pressurizing unit, a high-power high-pressure blower, and a flame arrester are sequentially arranged on the air intake pipeline from the connection point of the bypass pipeline D and the air intake pipeline to the hyperbaric chamber.

Description

Technical Field

[0001] The invention relates to a supply system for a kilometer-level saturation diving hyperbaric chamber, belonging to the technical field of gas filtration and water supply systems for saturation diving hyperbaric chambers. Background Art

[0002] Saturation diving is the latest achievement in the development of diving technology. It not only has a diving depth and diving time that conventional diving methods cannot match, but also has higher diving operation efficiency and safety. It is widely used in rescue and salvage and marine engineering. Usually deep-water divers need to live in a saturated hyperbaric chamber for a long time. The saturated hyperbaric chamber has a small space and high ambient pressure. The range of temperature and humidity in the chamber that makes people feel comfortable is much smaller than that in the air. In such an environment, it is particularly important to ensure that divers can rest normally in a suitable environment.

[0003] The 1,000-meter hyperbaric chamber generally contains a mixture of hydrogen and oxygen. Since hydrogen has a low density, good fluidity, and low breathing resistance, it is more suitable for 1,000-meter saturation diving. However, since hydrogen is prone to explosion, attention must be paid to the mixing ratio of the hydrogen and oxygen mixture in the hyperbaric chamber and during use, and it is particularly critical to reasonably control the hydrogen concentration in each link. Therefore, in order to ensure the living needs and safety needs of divers in the 1,000-meter hyperbaric chamber, designing a corresponding supply system has become a problem that technicians in this field need to solve. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a supply system for a kilometer-level saturation diving hyperbaric chamber; the functions of the system are to remove CO2, remove odor, dehumidify, control temperature and provide hot water in the chamber.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a supply system for a kilometer-level saturation diving hyperbaric chamber, which is special in that the supply system includes a gas filtration system and a water supply system in the chamber, the gas filtration system is arranged outside the hyperbaric chamber, and the filtration system includes a filtration unit, a sodium-calcium filtration unit, an activated carbon filtration unit, a silica gel automatic regeneration filtration unit A, a silica gel automatic regeneration filtration unit B, and a heating unit which are sequentially connected in series through pipelines; the filtration unit is connected to the exhaust pipeline of the gas to be purified in the hyperbaric chamber, and the heating unit is connected to the air intake pipeline of the filtered gas input in the hyperbaric chamber; a high-pressure ball valve, a one-way valve, a pressure reducing valve, a pressure gauge, a flow regulating valve and a temperature sensor are sequentially arranged on the discharge pipeline from the hyperbaric chamber to the filtration unit, a bypass pipeline A is arranged on the discharge pipeline between the one-way valve and the pressure reducing valve, and a safety valve and a high-pressure gas collecting tank are arranged on the bypass pipeline A; a bypass pipeline B is arranged behind the needle valve, and the bypass pipeline B is connected to a helium cylinder, by A pressure reducing valve B, a flow meter and a ball valve B are sequentially arranged along the bypass line B at the end of the helium cylinder; a bypass line C and a bypass line D are sequentially arranged from the heating unit to the high-pressure chamber on the air intake line; a mixed gas collecting device is installed at the end of the bypass line C, and a helium concentration analyzer, a hydrogen concentration analyzer and an oxygen concentration analyzer are installed in series on the bypass line C. Because the hydrogen-oxygen mixed gas is prone to explosion when the concentration ratio does not meet the requirements, when the gas in the system is filtered, the flow regulating valve is closed, and the helium stored in the helium cylinder is used to clean each filter unit through the pressure reducing valve and the flow meter, and during the cleaning process, the three analyzers are used to monitor the concentration of each component in the mixed gas at all times, and the gas passing through the analyzer is collected in the mixed gas collecting device; the end of the bypass line D is connected to the gas collection tank, and a ball valve D is also arranged on the bypass line D; a pressurizing unit, a high-power high-pressure blower and a flame arrester are sequentially arranged on the air intake line from the connection between the bypass line D and the air intake line to the high-pressure chamber. The high-power high-pressure blower is used to pressurize the gas that meets the requirements and then transport it into the high-pressure chamber. The flame arrester is installed in front of the pipeline entering the chamber to set up the last line of defense for the high-pressure chamber, because the hydrogen-oxygen mixed gas can easily cause an explosion when the concentration ratio does not meet the requirements.

[0006] Open the high-pressure ball valve on the instrument panel outside the high-pressure cabin. The mixed gas in the cabin passes through the high-pressure ball valve, the one-way valve, and then the pressure reducing valve. After the mixed gas is reduced in pressure, it passes through the filter unit, the sodium-calcium filter unit, and the activated carbon filter unit. The above three filter units are to remove CO2 and odor in the mixed gas. Then it passes through two silica gel automatic regeneration filter units to absorb the moisture in the high-pressure mixed gas. Then it passes through the heating unit to heat the dry mixed gas. Finally, it is pressurized and transported back to the high-pressure cabin through a high-power high-pressure blower. The cycle is repeated to complete the removal of CO2, odor, dehumidification and temperature control in the high-pressure cabin. In the system, the filter unit is cleaned with helium at regular intervals.

[0007] On the basis of the above technical solution, in order to achieve the convenience of use and the stability of the equipment, the present invention can also make the following improvements to the above technical solution:

[0008] Furthermore, the bypass pipeline A is provided with a safety valve, a one-way valve A, and a ball valve A. The one-way valve A is used to limit the backflow of gas entering the high-pressure gas collection tank. The safety valve here is to protect the pipeline. After the pipeline pressure exceeds the working pressure, the gas in the pipeline pushes the safety valve open, and the gas in the pipeline will not diffuse into the air, because a certain concentration of hydrogen can easily cause an explosion in the air. Instead, the gas exploded from the safety valve is collected in the high-pressure gas collection tank.

[0009] Furthermore, the bypass management C is also provided with a ball valve C, a pressure reducing valve C and a flow meter C.

[0010] Furthermore, the water supply system includes a main water tank, which is connected to the high-pressure chamber through a water supply pipeline; the water supply pipeline is sequentially provided with a temperature sensor Q, a high-power pressurized water pump and a one-way valve Q from the main water tank end to the high-pressure chamber.

[0011] Furthermore, the water supply pipeline is provided with a stop valve QN, a pressure regulating valve with tracking and a ball valve QN on the pipeline in the high-pressure chamber. The water supply pipeline is provided with a pressure regulating valve with tracking, which tracks the gas pressure in the chamber and adjusts the water supply pressure by a high-power pressurized water pump, so that the water pressure in the chamber is stable and suitable for divers to use.

[0012] Furthermore, the water supply system is also provided with an auxiliary water tank which is connected in parallel with the main water tank.

[0013] Provide hot water for use in the hyperbaric chamber: hot water is stored in two backup water tanks. When the diver in the hyperbaric chamber turns on the shower or faucet, the high-power pressurized water pump is turned on, and water of suitable temperature is available for use.

[0014] The advantages of the present invention are:

[0015] 1. Each filter unit is distributed in a module outside the cabin, which not only reduces the noise inside the cabin and provides a comfortable environment for divers, but also is an integral module that can be placed in a container for easy transportation;

[0016] 2. It is safer to filter the gas after it is decompressed;

[0017] 3. This equipment is equipped with helium, hydrogen and oxygen concentration analyzers to monitor the concentration of filtered gases and protect the safety of system equipment to the maximum extent;

[0018] 4. Use helium to clean the filter unit to ensure good filtering effect of the filter unit during the gas circulation process;

[0019] 5. The high-power high-pressure fan sends the pressurized mixed gas back to the cabin, providing protection for the divers' life in the cabin;

[0020] 6. Before the mixed gas returns to the cabin, add a flame arrester in the system pipeline to ensure the safety of the mixed gas entering the cabin;

[0021] 7. During a series of filtration processes of the mixed gas, the impure mixed gas is discharged and collected according to the display of the concentration analyzer, leaving only the mixed gas with purity that meets the requirements, which is returned to the cabin after being pressurized;

[0022] 8. The two water tanks serve as backup for each other to provide hot water of suitable temperature for the cabin;

[0023] 9. A mixed gas collection tank is also provided behind the safety valve to ensure the safety of the system;

[0024] 10. The hot water pipeline is installed with a pressure regulating valve with tracking function, which can adjust the hot water pressure entering the cabin according to the gas pressure in the cabin, so that the water flow entering the cabin is stable, which is suitable for divers to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a supply system for a kilometer-level saturation diving hyperbaric chamber according to the present application.

[0026] The reference numerals are recorded as follows: 1. ball valve N; 2. high pressure ball valve; 3. non-return valve; 4. safety valve; 5. pressure reducing valve; 6. pressure gauge; 7. flow regulating valve; 8. temperature sensor; 9. filter unit; 10. sodium calcium filter unit; 11. activated carbon filter unit; 12. silica gel automatic regeneration filter unit A; 12'. silica gel automatic regeneration filter unit B; 13. heating unit; 14. ball valve C; 15. pressure reducing valve C; 16. flow meter C; 17. helium concentration analyzer; 18. hydrogen concentration analyzer; 19. oxygen concentration analyzer; 20. mixed gas collection device; 21. ball valve R; 22. temperature sensor R; 23. pressurizing unit; 24. High-power high-pressure blower; 25. Check valve S; 26. Flame arrester; 27. Stop valve QN; 28. Pressure regulating valve with tracking; 29. ​​Ball valve QN; 30. Check valve Q; 31. High-power pressurized water pump; 32. Temperature sensor Q; 33. Ball valve Z; 34. Ball valve ZB; 35. Main water tank; 36. Auxiliary water tank 2; 37. Ball valve JS; 38. Temperature sensor JS; 39. Check valve JS; 40. Ball valve JS; 41. Ball valve D; 42. Gas collection tank; 43. Check valve A; 44. Ball valve A; 45. High-pressure gas collection tank; 46. Ball valve B; 47. Flow meter; 48. Pressure reducing valve B; 49. Helium cylinder DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] Combined with Figure 1 , the technical solution of the present application is described: a supply system for a kilometer-level saturation diving hyperbaric chamber, comprising a hyperbaric chamber, the supply system comprising a gas filtration unit and a water supply system, the gas filtration unit being arranged outside the hyperbaric chamber, the purification system comprising a filtration unit 9, a sodium-calcium filtration unit 10, an activated carbon filtration unit 11, a silica gel automatic regeneration filtration unit A12, a silica gel automatic regeneration filtration unit B12', and a heating unit 13 which are sequentially connected in series through pipelines; the filtration unit 9 is connected to a gas discharge pipeline to be filtered of the hyperbaric chamber, and the heating unit 13 is connected to a gas discharge pipeline to be filtered of the hyperbaric chamber. The air inlet pipeline for the filtered gas input is connected; the high-pressure ball valve 2, the one-way valve 3, the pressure reducing valve 5, the pressure gauge 6, the flow regulating valve 7 and the temperature sensor 8 are sequentially arranged on the discharge pipeline from the high-pressure chamber to the filter unit 9, wherein the flow regulating valve can also use a needle valve, and a bypass pipeline A is arranged on the discharge pipeline between the one-way valve 3 and the pressure reducing valve 5, and the bypass pipeline A is connected to the high-pressure gas collection tank 45; a bypass pipeline B is arranged at the temperature sensor 8, and the bypass pipeline B is connected to the helium cylinder 49, and the pressure reducing valve B is sequentially arranged along the bypass pipeline B from the end of the helium cylinder 49. 48, flow meter 47 and ball valve B 46; bypass line C and bypass line D are arranged in sequence from 13 to the high pressure chamber; a mixed gas collecting device 20 is installed at the end of bypass line C, and a helium concentration analyzer 17, a hydrogen concentration analyzer 18 and an oxygen concentration analyzer 19 are installed on the bypass line C. A helium concentration analyzer 17, a hydrogen concentration analyzer 18 and an oxygen concentration analyzer 19 are also provided. These three analyzers respectively display the concentrations of the three gases in the gas, and the gas is collected or provided for use in the high pressure chamber according to the concentration values ​​of the three gases; the end of bypass line D is connected to 42; a ball valve D 41 is also arranged on bypass line D; a pressurizing unit 23, a high-power high-pressure blower 24 and a flame arrester 26 are arranged in sequence from the connection point of bypass line D and the intake line to the intake line of the high pressure chamber, and the flame arrester 26 prevents the hydrogen-oxygen mixture from catching fire accidentally.

[0029] Furthermore, the bypass pipeline A is provided with a safety valve 4, a one-way valve A 43, and a ball valve A 44. The one-way valve A 43 is used to limit the backflow of gas entering the high-pressure gas collection tank 45. The safety valve 4 here is to protect the pipeline. After the pipeline pressure exceeds the working pressure, the gas in the pipeline pushes the safety valve open, and the gas exploded in the pipeline is collected in the high-pressure gas collection tank.

[0030] Furthermore, the bypass management C is also provided with a ball valve C14, a pressure reducing valve C15 and a flow meter C16.

[0031] Furthermore, the water supply system includes a main water tank 35, which is connected to the high-pressure chamber through a water supply pipeline; the water supply pipeline is sequentially provided with a temperature sensor Q32, a high-power pressurized water pump 31 and a one-way valve Q30 from the main water tank 35 end to the high-pressure chamber.

[0032] Furthermore, the water supply pipeline is provided with a stop valve QN 27, a pressure regulating valve 28 with tracking, and a ball valve QN 29 on the pipeline in the high-pressure chamber.

[0033] Furthermore, the water supply pipeline is provided with a pressure regulating valve 28 with tracking function, and the water supply pressure is adjusted by a high-power pressurized water pump 31 according to the gas pressure tracking in the cabin, so as to stabilize the water pressure in the cabin.

[0034] Furthermore, the water supply system is also provided with an auxiliary water tank 36 .

[0035] The above system operates as follows:

[0036] Gas circulation device: open the high-pressure ball valve 2, the hydrogen-oxygen mixed gas in the high-pressure chamber passes through the high-pressure ball valves 1, 2, the one-way valve 3 to the pressure reducing valve 5, reducing the high-pressure mixed gas from the high pressure of one thousand meters underwater to a safe pressure, and then passes through the flow regulating valve 7, and then through the temperature sensor 8 to detect its temperature, and then enters the filter unit 9, and then enters the sodium-calcium filter unit 10, and then passes through the activated carbon filter unit 11, and then passes through the two silica gel automatic regeneration filter units A12 and silica gel automatic regeneration filter unit B12', and the carbon dioxide in the mixed gas is filtered out in turn. The gas will enter the heating unit 13 to heat the mixed gas to a suitable use temperature. Here, a path of gas will pass through the ball valve 14, the pressure reducing valve C15, the flow meter C16, and enter the helium concentration analyzer 17, the hydrogen concentration analyzer 18 and the oxygen concentration analyzer 19, thereby displaying the concentration values ​​of hydrogen and oxygen in the mixed gas. When the concentration of oxygen in the mixed gas is lower than 2% (because in the hydrogen-oxygen mixed gas, when the oxygen content is 4%-94%, the mixed gas will produce explosive combustion, so this concentration is controlled), the ball valve 14 can be closed and the ball valve R can be opened. 21, temperature sensor R 22 displays the temperature value, the pressurizing unit 23 pressurizes the gas in the pipeline, and the high-power high-pressure blower 24 is started, so that the filtered and temperature-appropriate hydrogen-oxygen mixture passes through the needle valve, the one-way valve 25 and the flame arrester 26 and is sent into the high-pressure cabin. At the same time, the hydrogen-oxygen mixture in the cabin flows into the filter unit through the ball valve N1, the high-pressure ball valve 2 and the one-way valve 3, so as to ensure that the mixture in the cabin is suitable for work and life. Here, adding a flame arrester to the hatch entrance is to once again ensure the safety of the hydrogen-oxygen mixture and add another line of defense for the mixture entering the cabin. At the same time, in order to avoid accidents caused by hydrogen leakage, all pipelines except the umbilical hose are made of stainless steel.

[0037] Exhaust pipeline: In the above cycle, after the hydrogen analyzer 18 and the oxygen analyzer 19 are tested, the discharged mixed gas cannot be discharged directly into the air. The discharged hydrogen and oxygen mixed gas must be collected in the mixed gas collection device 20, and then the mixed gas in the gas cylinder is treated separately regularly. When the concentration of the oxygen analyzer shows between 2% and 4%, close the ball valve R 21, open the ball valve D 41, collect the mixed gas in the gas collection tank 42, and treat it separately later.

[0038] Cleaning filter unit device: The filter element of each filter unit needs to be cleaned and replaced regularly. When cleaning and replacing, activate another supply device connected to the high-pressure chamber, close the high-pressure ball valve 2 and ball valve R 21 of this device, and cut off the connection between the high-pressure chamber and this filter system. Close the flow regulating valve 7, open the ball valve B46 and ball valve 14, flow meter 47 and pressure reducing valve B 48, observe the indication on the pressure gauge, make the pressure entering each filter unit greater than the original system pressure by about 0.2MPa, use helium to clean each filter unit, for safety considerations, the cleaned gas flows through each concentration analyzer and is collected in the mixed gas collection device (helium is relatively expensive and can be recycled), clean until the hydrogen concentration is less than 2%, and then close the ball valve B 46 to stop cleaning. Open the high-pressure ball valve 2 and flow regulating valve 7, clean the filter unit again with the gas in the cabin, when the helium concentration is low, close the ball valve 14, open the ball valve R 21, and circulate the gas. Since helium itself can be used for saturation diving, it is safe and reliable to use helium here.

[0039] Hot water supply device: Divers in the hyperbaric chamber need hot water of suitable temperature for bathing and washing. The following pipelines supply hot water to the chamber. Open the ball valve JS 40, and the hot water of suitable temperature supplied from the outside passes through the ball valve JS 40, the one-way valve JS 39, and the temperature sensor JS 38 to display the temperature. The hot water is supplied to the main water tank 35 and the auxiliary water tank 36 through the ball valve respectively. The hot water of suitable temperature is stored in the two water tanks, and the two water tanks are used as backup for each other. When the diver in the hyperbaric chamber opens the hot water valve to connect the hot water, the hot water in the main water tank 35 passes through the ball valve Z 33, and the temperature is displayed by the temperature sensor Q 32. Under the pressure of the high-power booster pump 31, the hot water passes through the one-way valve and enters the hyperbaric chamber. Then the hot water passes through the ball valve QN 29, and the pressure regulating valve with tracking function and the stop valve are used to supply the hot water to the divers in the chamber. The pressure regulating valve with tracking function here can adjust the water pressure according to the pressure in the chamber, so as to achieve a stable and continuous supply of hot water.

[0040] During the gas circulation process, the mixed gas flows from the high-pressure chamber through the ball valve N1 and the high-pressure ball valve 2 to the one-way valve 3. A safety valve 4 is added to the pipeline behind the one-way valve 3. When the pipeline is dangerous, the safety valve opens. Since the mixed gas cannot be discharged into the air, the gas passes through the safety valve 4, the one-way valve A 43, the ball valve A 44, and then the mixed gas is collected in the mixed gas collection tank 45, ensuring the safety of the entire system.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A supply system for a kilometer-level saturation diving hyperbaric chamber, comprising a hyperbaric chamber, characterized in that: The supply system comprises a gas filtering system and a water supply system. The gas filtering system is arranged outside the high-pressure chamber, and comprises a filtering unit (9), a sodium-calcium filtering unit (10), an activated carbon filtering unit (11), a silica gel automatic regeneration filtering unit A (12), a silica gel automatic regeneration filtering unit B (12'), and a heating unit (13) which are sequentially connected in series through pipelines. The filtering unit (9) is connected to a discharge pipeline of the gas to be filtered in the high-pressure chamber, and the heating unit (13) is connected to an air intake pipeline for inputting filtered gas in the high-pressure chamber. A high-pressure ball valve (2), a one-way valve (3), a pressure reducing valve (5), a pressure gauge (6), a flow regulating valve (7), and a temperature sensor (8) are sequentially arranged on the discharge pipeline from the high-pressure chamber to the filtering unit (9). A bypass pipe is arranged on the discharge pipeline between the one-way valve (3) and the pressure reducing valve (5). A bypass pipeline A is connected to a high-pressure gas collection tank (45); a bypass pipeline B is arranged after the flow regulating valve (7) and before the filter unit (9), the bypass pipeline B is connected to a helium bottle (49), and a pressure reducing valve B (48), a flow meter (47) and a ball valve B (46) are arranged in sequence along the bypass pipeline B from the end of the helium bottle (49); a bypass pipeline C and a bypass pipeline D are arranged in sequence on the air intake pipeline from the heating unit (13) to the high-pressure chamber; a mixed gas collection device (20) is installed at the end of the bypass pipeline C, and a helium concentration analyzer (17), a hydrogen concentration analyzer (18) and an oxygen concentration analyzer (19) are installed in series on the bypass pipeline C; the end of the bypass pipeline D is connected to a gas collection tank (42); a pressurizing unit (23), a high-power high-pressure blower (24) and a flame arrester (26) are arranged in sequence on the air intake pipeline from the connection point between the bypass pipeline D and the air intake pipeline to the high-pressure chamber; The bypass pipeline A is provided with a safety valve (4), a one-way valve A (43), and a ball valve A (44); the one-way valve A (43) is used to limit the backflow of gas entering the high-pressure gas collection tank (45); The bypass pipeline C is also provided with a ball valve C (14), a pressure reducing valve C (15) and a flow meter C (16).

2. The supply system for a kilometer-level saturation diving hyperbaric chamber according to claim 1, characterized in that: The water supply system comprises a main water tank (35), which is connected to the high-pressure chamber via a water supply pipeline; the water supply pipeline is provided with a temperature sensor Q (32), a high-power pressurized water pump (31) and a one-way valve Q (30) in sequence from the main water tank (35) end to the high-pressure chamber.

3. The supply system for a kilometer-level saturation diving hyperbaric chamber according to claim 2, characterized in that: The water supply pipeline is provided with a stop valve QN (27), a pressure regulating valve (28) with tracking, and a ball valve QN (29) on the pipeline in the high-pressure chamber.

4. The supply system for a kilometer-level saturation diving hyperbaric chamber according to claim 2, characterized in that: The water supply system is also provided with an auxiliary water tank (36).

5. The supply system for a kilometer-level saturation diving hyperbaric chamber according to claim 1, characterized in that: The flow regulating valve (7) is a needle valve.

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