CN214143902U - Supply system for kilometer-level saturated diving hyperbaric chamber - Google Patents
Supply system for kilometer-level saturated diving hyperbaric chamber Download PDFInfo
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- CN214143902U CN214143902U CN202023244144.1U CN202023244144U CN214143902U CN 214143902 U CN214143902 U CN 214143902U CN 202023244144 U CN202023244144 U CN 202023244144U CN 214143902 U CN214143902 U CN 214143902U
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Abstract
The utility model relates to a supply system for a kilometer-scale saturated diving hyperbaric chamber, which comprises a hyperbaric chamber, wherein the supply system comprises a gas filtering unit and a water supply system, the gas filtering unit is arranged outside the hyperbaric chamber, and the filtering unit comprises a filtering unit, a sodium calcium filtering unit, an activated carbon filtering unit, two silica gel automatic regeneration filtering units and a heating unit B which are 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 high-pressure cabin to the filtering 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 arranged on the pipeline; a helium concentration analyzer, a hydrogen concentration analyzer and an oxygen concentration analyzer are installed on the bypass pipeline C in series; and a pressurizing unit, a high-power high-pressure blower and a flame arrester are sequentially arranged on the air inlet pipeline from the joint of the bypass pipeline D and the air inlet pipeline to the high-pressure cabin.
Description
Technical Field
The utility model relates to a feed system for kilometer level saturation dive hyperbaric chamber belongs to saturation dive hyperbaric chamber with gas filtration and water supply system technical field.
Background
The saturation diving is the latest result of diving technical development, not only has incomparable diving depth and diving time of the conventional diving mode, but also has higher diving operation efficiency and safety, and has wide application in rescue and salvage and ocean engineering. Deep water divers are often required to live in a saturated hyperbaric chamber for long periods of time. The saturated hyperbaric chamber space is small, the ambient air pressure is high, and the ambient temperature and humidity in the cabin are much smaller in range for people to feel comfortable than in the air. In such an environment, it is important to ensure that the diver can normally rest in a suitable environment.
The kilometer hyperbaric chamber is generally filled with hydrogen-oxygen mixed gas, and the hydrogen has small density, good circulation and low respiratory resistance, so that the kilometer hyperbaric chamber is more suitable for kilometer saturated diving. However, because hydrogen is easy to explode, the mixing proportion of the heavy hydrogen-oxygen mixed gas must be injected in the high-pressure cabin and the using process, and the reasonable control of the hydrogen concentration in each link is particularly critical. Therefore, in order to ensure the life needs and safety needs of divers in a kilometer high-pressure cabin, designing a corresponding supply system becomes a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a supply system for a kilometre saturated diving hyperbaric chamber aiming at the problems in the prior art; the function of the system is to remove CO for the cabin2Removing peculiar smell, dehumidifying, controlling temperature and providing hot water.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a supply system for a kilometer-level saturated diving hyperbaric chamber is characterized by comprising an in-chamber gas filtering system and a water supply system, wherein the gas filtering system is arranged outside the hyperbaric chamber and comprises a filtering unit, a sodium calcium filtering unit, an activated carbon filtering unit, a silica gel automatic regeneration filtering unit A, a silica gel automatic regeneration filtering unit B and a heating unit which are sequentially connected in series through pipelines; the filtering unit is communicated with a gas exhaust pipeline of the high-pressure cabin to be purified, and the heating unit is communicated with a gas inlet pipeline of the high-pressure cabin to which filtered gas is input; 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 high-pressure cabin to the filtering 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 is communicated with a helium bottle, and a pressure reducing valve B, a flow meter and a ball valve B are sequentially arranged at the end of the helium bottle along the bypass pipeline B; a bypass pipeline C and a bypass pipeline D are sequentially arranged on the air inlet pipeline from the heating unit to the high-pressure cabin; the end part of a bypass pipeline C is provided with a mixed gas collecting device, the bypass pipeline C is connected in series with a helium concentration analyzer, a hydrogen concentration analyzer and an oxygen concentration analyzer, and because the hydrogen-oxygen mixed gas is easy to explode when the concentration ratio does not meet the requirement, after the gas in the system is filtered, a flow regulating valve is closed, helium stored in a helium tank is used for cleaning each filtering unit through a pressure reducing valve and a flowmeter, in the cleaning process, the concentration of each component in the mixed gas is constantly monitored by using three analyzers, and the gas passing through the analyzers is collected in the mixed gas collecting device; the end part of the bypass pipeline D is communicated with the gas collecting tank, and the bypass pipeline D is also provided with a ball valve D; and a pressurizing unit, a high-power high-pressure blower and a flame arrester are sequentially arranged on the air inlet pipeline from the joint of the bypass pipeline D and the air inlet pipeline to the high-pressure cabin. The high-power high-pressure blower is used for pressurizing gas meeting the requirements and then conveying the gas into a high-pressure cabin, a fire damper is arranged in front of a cabin inlet pipeline, a last defense line is arranged for the high-pressure cabin, and the mixed gas of hydrogen and oxygen is easy to explode when the concentration ratio does not meet the requirements.
Opening a high-pressure ball valve on an instrument desk outside the high-pressure cabin, reducing the pressure of the mixed gas in the cabin through the high-pressure ball valve, a one-way valve and a pressure reducing valve, and then passing the mixed gas through a filtering unit, a sodium-calcium filtering unit and an active carbon filtering unit, wherein the three filtering units are used for removing CO in the mixed gas2And peculiar smell, passing through two silica gel automatic regeneration filter units to adsorb moisture in the high-pressure mixed gas, passing through a heating unit to heat the dry mixed gas, finally pressurizing again, conveying back to the hyperbaric chamber through a high-power high-pressure blower, and circularly reciprocating to remove CO in the hyperbaric chamber2Removing peculiar smell, dehumidifying and controlling temperature. In the system, the filtration unit was periodically purged with helium.
On the basis of the technical scheme, the utility model discloses a reach the convenience of use and the stability of equipment, can also make following improvement to foretell technical scheme:
further, a safety valve, a one-way valve A and a ball valve A are arranged on the bypass pipeline A, and the one-way valve A is used for limiting gas backflow entering the high-pressure gas collecting tank. The safety valve is used for protecting the pipeline, after the pressure of the pipeline exceeds the working pressure, the safety valve is pushed open by gas in the pipeline, the gas in the pipeline cannot be diffused into the air, and the gas exploded out of the safety valve is collected into the high-pressure gas collecting tank because the hydrogen with certain concentration easily causes explosion in the air.
Further, a ball valve C, a pressure reducing valve C and a flow meter C are further arranged on the bypass management C.
Further, the water supply system comprises a main water tank which is communicated with the high pressure cabin through a water supply pipeline; the water supply pipeline is provided with a temperature sensor Q, a high-power pressure water pump and a one-way valve Q from the main water tank end to the high-pressure cabin in sequence.
Furthermore, a stop valve QN, a pressure regulating valve with a tracking function and a ball valve QN are arranged on the pipeline of the water supply pipeline in the hyperbaric chamber. The water supply pipeline is provided with the air-vent valve that the area was tracked, tracks according to the gas pressure in the cabin, adjusts water supply pressure by high-power pressure water pump, makes water pressure stable in the confession cabin, is fit for the diver and uses.
Further, the water supply system is also provided with an auxiliary water tank. The auxiliary water tank is connected in parallel with the main water tank.
Providing service hot water for the hyperbaric chamber: the hot water is stored in two water tanks which are mutually standby, when a diver opens a spray or a water tap in the high-pressure chamber, the high-power pressure water pump is started, and then the water with proper temperature can be supplied for use.
The utility model has the advantages that:
1. each filtering unit is uniformly distributed in one module outside the cabin, so that the noise in the cabin is reduced, a comfortable environment is provided for divers, and the filtering units are an integral module and can be placed in a container for convenient transportation;
2. after the gas out of the cabin is decompressed, various kinds of filtering are carried out, so that the method is safe;
3. the equipment is provided with a helium, hydrogen and oxygen concentration analyzer for monitoring the concentration of the filtered gas, thereby protecting the safety of the system equipment to the maximum extent;
4. helium is used for cleaning the filtering unit, so that a good filtering effect of the filtering unit in the gas circulation process is ensured;
5. the high-power high-pressure fan sends the pressurized mixed gas back to the cabin, thereby providing guarantee for the life of divers in the cabin;
6. before the mixed gas returns to the cabin, a flame arrester is added in a system pipeline, so that the safety of the mixed gas entering the cabin is guaranteed;
7. in the process of filtering the mixed gas in series, according to the display of a concentration analyzer, discharging and collecting impure mixed gas, only leaving the mixed gas with the purity meeting the requirement, and returning the mixed gas into the cabin after pressurization;
8. the two water tanks are mutually standby and provide hot water with proper temperature for the cabin;
9. a mixed gas collecting tank is also arranged behind the safety valve to ensure the safety of the system;
10. the hot water pipeline is provided with a pressure regulating valve with a tracking function, and the hot water pressure in the cabin can be regulated according to the gas pressure in the cabin, so that the flow of the water flow in the cabin is stable, and the hot water pipeline is suitable for divers to use.
Drawings
Fig. 1 is a schematic diagram of a supply system for a kilometer scale saturated submersible hyperbaric chamber according to the present application.
The reference numbers are recorded as follows: 1. a ball valve N; 2. a high pressure ball valve; 3. a one-way valve; 4. a safety valve; 5. a pressure reducing valve; 6. a pressure gauge; 7. a flow regulating valve; 8. a temperature sensor; 9. a filtration unit; 10. a sodium calcium filtration unit; 11. an activated carbon filtration unit; 12. the silica gel automatic regeneration filtering unit A; 12', a silica gel automatic regeneration filtering unit B; 13. a heating unit; 14. a ball valve C; 15. a pressure reducing valve C; 16. a flow meter C; 17. a helium concentration analyzer; 18. a hydrogen concentration analyzer; 19. an oxygen concentration analyzer; 20. a mixed gas collection device; 21. a ball valve R; 22. a temperature sensor R; 23. a pressurizing unit; 24. a high power high pressure blower; 25. a one-way valve S; 26. a flame arrestor; 27. a stop valve QN; 28. a pressure regulating valve with tracking; 29. a ball valve QN; 30. a one-way valve Q; 31. a high-power pressurized water pump; 32. a temperature sensor Q; 33. a ball valve Z; 34. a ball valve ZB; 35. a main water tank; 36. an auxiliary water tank 2; 37. a ball valve JS; 38. a temperature sensor JS; 39. a one-way valve JS; 40. a ball valve JS; 41. a ball valve D; 42. a gas collection tank; 43. a one-way valve A; 44. a ball valve A; 45. a high pressure gas collection tank; 46. a ball valve B; 47. a flow meter; 48. a pressure reducing valve B; 49. helium bottle
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
The technical scheme of the application is explained by combining the attached drawing 1: a supply system for a kilometer-level saturated diving hyperbaric chamber comprises a hyperbaric chamber, the supply system comprises a gas filtering unit and a water supply system, the gas filtering unit is arranged outside the hyperbaric chamber, and a purification system comprises a filtering unit 9, a sodium calcium filtering unit 10, an activated carbon filtering unit 11, a silica gel automatic regeneration filtering unit A12, a silica gel automatic regeneration filtering unit B12' and a heating unit 13 which are sequentially connected in series through pipelines; the filtering unit 9 is communicated with a gas exhaust pipeline of the hyperbaric chamber to be filtered, and the heating unit 13 is communicated with a gas inlet pipeline for inputting filtered gas of the hyperbaric 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 a discharge pipeline from the high-pressure cabin to the filtering unit 9, wherein the flow regulating valve can also use a needle valve, 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 communicated with a high-pressure gas collecting tank 45; a bypass pipeline B is arranged at the outlet of the temperature sensor 8 and is communicated with a helium tank 49, and a pressure reducing valve B48, a flow meter 47 and a ball valve B46 are sequentially arranged at the end of the helium tank 49 along the bypass pipeline B; a bypass pipeline C and a bypass pipeline D are sequentially arranged on the air inlet pipeline from 13 to the high-pressure cabin; the end part of the bypass pipeline C is provided with a mixed gas collecting device 20, the bypass pipeline C is provided with a helium concentration analyzer 17, a hydrogen concentration analyzer 18 and an oxygen concentration analyzer 19, the helium concentration analyzer 17, the hydrogen concentration analyzer 18 and the oxygen concentration analyzer 19 are further arranged, the three analyzers respectively display the concentrations of three gases in the gases, and whether the gases are collected or can be supplied to a high-pressure cabin for use is determined according to the concentration values of the three gases; the end of the bypass line D is communicated 42; the bypass pipeline D is also provided with a ball valve D41; the joint of the bypass pipeline D and the air inlet pipeline is connected with the air inlet pipeline of the high-pressure cabin, a pressurizing unit 23, a high-power high-pressure blower 24 and a flame arrester 26 are sequentially arranged on the air inlet pipeline, and the flame arrester 26 prevents the hydrogen-oxygen mixture from being accidentally ignited.
Further, a safety valve 4, a one-way valve a 43 and a ball valve a 44 are arranged on the bypass pipeline a, the one-way valve a 43 is used for limiting gas backflow entering the high-pressure gas collecting tank 45, the safety valve 4 is a protection pipeline, after the pipeline pressure exceeds the working pressure, gas in the pipeline pushes the safety valve open, and gas exploded out of the pipeline is collected in the high-pressure gas collecting tank.
Further, a ball valve C14, a pressure reducing valve C15 and a flow meter C16 are provided on the bypass management C.
Further, the water supply system includes a main water tank 35, the main water tank 35 communicating with the hyperbaric chamber through a water supply line; the water supply pipeline is provided with a temperature sensor Q32, a high-power pressurized water pump 31 and a one-way valve Q30 in sequence from the end of the main water tank 35 to the high-pressure cabin.
Further, the water supply line is provided with a shutoff valve QN 27, a pressure regulating valve 28 with a trace, and a ball valve QN 29 on a line in the hyperbaric chamber.
Further, the water supply pipeline is provided with a pressure regulating valve 28 with tracking, and the water supply pressure is regulated by a high-power pressurized water pump 31 according to the tracking of the gas pressure in the cabin, so that the water pressure in the cabin is stable.
Further, the water supply system is also provided with a supporting water tank 36.
The operation mode of the system is as follows:
a gas circulation device: opening the high-pressure ball valve 2, the hydrogen-oxygen mixed gas in the hyperbaric chamber passes through the high-pressure ball valves 1 and 2, the one-way valve 3 to the pressure reducing valve 5, the high-pressure mixed gas is reduced to safe pressure from the high pressure of kilometers under water, then passes through the flow regulating valve 7, the temperature of the mixed gas is detected through the temperature sensor 8, then the mixed gas enters the filtering unit 9, then enters the sodium-calcium filtering unit 10, then passes through the activated carbon filtering unit 11, then passes through the two silica gel automatic regeneration filtering units A12 and B12', the carbon dioxide, the peculiar smell and the moisture in the mixed gas are sequentially filtered, then the mixed gas enters the heating unit 13, the mixed gas is heated to proper use temperature, and one path of gas passes through the ball valve 14, the pressure reducing valve C15 and the flow meter C16, enters the helium concentration analyzer 17, the hydrogen concentration analyzer 18 and the oxygen concentration analyzer 19, therefore, concentration values of hydrogen and oxygen in the mixed gas are displayed, when the concentration of the mixed gas is lower than 2% (because the oxygen content of the mixed gas is 4% -94%, the mixed gas can explode and burn, so that the concentration is controlled), the ball valve 14 can be closed, the ball valve R21 is opened, the temperature sensor R22 displays a temperature value, the pressurizing unit 23 pressurizes the gas in the pipeline, the high-power high-pressure blower 24 is started, so that the filtered mixed gas with proper temperature passes through the needle valve, the one-way valve 25 and the flame arrester 26 and is sent into a high-pressure cabin, meanwhile, the mixed gas with hydrogen and oxygen in the cabin flows into the filtering unit through the ball valve N1, the high-pressure ball valve 2, the one-way valve 3 and the like, and the mixed gas in the cabin is ensured to work and live properly. Here, the fire arrestor is added at the entrance hatch, so that the safety of the hydrogen-oxygen mixed gas is ensured again, and a protective line is added for the mixed gas entering the cabin. Meanwhile, in order to avoid accidents caused by hydrogen leakage, all other pipelines except the umbilical cord hose are made of stainless steel.
An exhaust pipeline: in the above cycle, the discharged mixture gas cannot be directly discharged to the air after the detection by the hydrogen analyzer 18 and the oxygen analyzer 19, and the discharged mixture gas must be collected in the mixture gas collecting means 20, after which the mixture gas in the gas cylinder is periodically separately treated. When the concentration of the oxygen analyzer is between 2% and 4%, the ball valve R21 is closed, the ball valve D41 is opened, and the mixed gas is collected in the gas collecting tank 42 and is separately processed in the later period.
Cleaning the filter unit device: the filter elements of each filter unit need to be cleaned and replaced periodically. When cleaning and replacing, another set of supply device connected with the hyperbaric chamber is started, the high-pressure ball valve 2 and the ball valve R21 of the device are closed, and the connection between the hyperbaric chamber and the filtering system is cut off. Closing the flow regulating valve 7, opening the ball valve B46 and the ball valve 14, the flow meter 47 and the pressure reducing valve B48, observing the indication on the pressure gauge, leading the pressure entering each filtering unit to be about 0.2MPa higher than the original system pressure, using helium to clean each filtering unit, for safety, enabling the cleaned gas to flow through each concentration analyzer and be collected in a mixed gas collecting device (the helium is expensive and can be recycled), and closing the ball valve B46 to stop cleaning after cleaning until the hydrogen concentration is less than 2%. And opening the high-pressure ball valve 2 and the flow regulating valve 7, cleaning the filtering unit again by using gas in the cabin, and closing the ball valve 14 and opening the ball valve R21 to circulate the gas when the helium concentration is low. Helium is safe and reliable for use herein since helium itself can be used for saturation diving.
A hot water supply device: the diver in the hyperbaric chamber needs hot water with proper temperature for bathing and washing, and the hot water is supplied to the hyperbaric chamber through a lower pipeline. The ball valve JS 40 is opened, hot water with proper temperature supplied from 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 with proper temperature is stored in the two water tanks, and the two water tanks are mutually standby. When a diver opens a hot water valve in the high-pressure chamber to receive hot water, the hot water in the main water tank 35 passes through the ball valve Z33, the temperature is displayed through the temperature sensor Q32, under the pressurization of the high-power pressurized water pump 31, the hot water enters the high-pressure chamber through the one-way valve, then the hot water passes through the ball valve QN 29, and the pressure regulating valve with the tracking function and the stop valve are used by the diver in the chamber to use the hot water. The pressure regulating valve with the tracking function can regulate the water pressure according to the pressure in the cabin, so that the stable and continuous supply of hot water is realized.
In the gas circulation process, the mixed gas flows to the one-way valve 3 from the high-pressure cabin through the ball valve N1 and the high-pressure ball valve 2, a safety valve 4 is additionally arranged in a pipeline behind the one-way valve 3, when the pipeline is dangerous, the safety valve is opened, and the mixed gas cannot be discharged into the air, so that the gas flows through the safety valve 4, the one-way valve A43 and the ball valve A44, and then the mixed gas is collected in the mixed gas collecting tank 45, so that the safety of the whole system is ensured.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A supply system for a kilometer-level saturated diving hyperbaric chamber comprises a hyperbaric chamber and is characterized in that the supply system comprises a gas filtering system and a water supply system, the gas filtering system is arranged outside the hyperbaric chamber, and the gas filtering system 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 communicated with a gas exhaust pipeline of the hyperbaric chamber to be filtered, and the heating unit (13) is communicated with a gas inlet pipeline of the hyperbaric chamber for inputting filtered gas; 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 a discharge pipeline from the high-pressure cabin to the filtering unit (9), 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 communicated with a high-pressure gas collecting tank (45); a bypass pipeline B is arranged behind the flow regulating valve (7) and in front of the filtering unit (9), the bypass pipeline B is communicated with a helium tank (49), and a pressure reducing valve B (48), a flow meter (47) and a ball valve B (46) are sequentially arranged at the end of the helium tank (49) along the bypass pipeline B; a bypass pipeline C and a bypass pipeline D are sequentially arranged on the air inlet pipeline from the heating unit (13) to the high-pressure cabin; a mixed gas collecting device (20) is arranged at the end part of the bypass pipeline C, and a helium concentration analyzer (17), a hydrogen concentration analyzer (18) and an oxygen concentration analyzer (19) are arranged on the bypass pipeline C in series; the end part of the bypass pipeline D is communicated with a gas collecting tank (42); a pressurizing unit (23), a high-power high-pressure blower (24) and a flame arrester (26) are sequentially arranged on the air inlet pipeline from the connection part of the bypass pipeline D and the air inlet pipeline to the high-pressure cabin.
2. The feeding system for the saturated diving hyperbaric chamber of kilometre scale according to claim 1, characterized in that said by-pass line a is provided with a safety valve (4), a one-way valve a (43), a ball valve a (44), the one-way valve a (43) being adapted to limit the gas counter-flow entering the high-pressure gas collection tank (45).
3. The feeding system for the saturated diving hyperbaric chamber at the level of kilometres according to claim 1, characterized in that on the by-pass line C there are further provided a ball valve C (14), a pressure reducing valve C (15) and a flow meter C (16).
4. Supply system for a saturated submersible hyperbaric chamber of the order of kilometres according to claim 1, characterized in that it comprises a main water tank (35), the main water tank (35) communicating with the hyperbaric chamber through a water supply line; the water supply pipeline is provided with a temperature sensor Q (32), a high-power pressure water pump (31) and a one-way valve Q (30) from the end of the main water tank (35) to the high-pressure cabin in sequence.
5. The feeding system for saturated diving hyperbaric chambers at the level of kilometres according to claim 4, characterized in that said water supply line is provided with stop valves QN (27), pressure-regulating valves with tracking (28) and ball valves QN (29) on the lines inside the hyperbaric chamber.
6. Supply system for a saturated submersible hyperbaric chamber at the level of kilometres according to claim 4, characterized in that it is further provided with an auxiliary tank (36).
7. Supply system for saturated submersible hyperbaric chambers at the level of kilometres according to claim 1, characterized in that the flow regulating valve (7) can be a needle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023244144.1U CN214143902U (en) | 2020-12-29 | 2020-12-29 | Supply system for kilometer-level saturated diving hyperbaric chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023244144.1U CN214143902U (en) | 2020-12-29 | 2020-12-29 | Supply system for kilometer-level saturated diving hyperbaric chamber |
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| Publication Number | Publication Date |
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| CN214143902U true CN214143902U (en) | 2021-09-07 |
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| CN202023244144.1U Active CN214143902U (en) | 2020-12-29 | 2020-12-29 | Supply system for kilometer-level saturated diving hyperbaric chamber |
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| CN (1) | CN214143902U (en) |
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