CN108342745A - A kind of electrolysis water oxygen supply diving apparatus and control method - Google Patents
A kind of electrolysis water oxygen supply diving apparatus and control method Download PDFInfo
- Publication number
- CN108342745A CN108342745A CN201810284677.0A CN201810284677A CN108342745A CN 108342745 A CN108342745 A CN 108342745A CN 201810284677 A CN201810284677 A CN 201810284677A CN 108342745 A CN108342745 A CN 108342745A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- diving
- gas
- hydrogen
- air cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 239000001301 oxygen Substances 0.000 title claims abstract description 116
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 116
- 230000009189 diving Effects 0.000 title claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 70
- 239000001257 hydrogen Substances 0.000 claims abstract description 50
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 50
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 3
- 239000002351 wastewater Substances 0.000 claims description 6
- 239000013535 sea water Substances 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 238000009790 rate-determining step (RDS) Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 229910001882 dioxygen Inorganic materials 0.000 claims 1
- 238000001914 filtration Methods 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 229940063746 oxygen 20 % Drugs 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/12—Diving masks
- B63C11/14—Diving masks with forced air supply
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present invention relates to the invention belongs to equipment of diving under water, specifically a kind of electrolysis water oxygen supply diving apparatus and control methods.This kind of electrolysis water supplies oxygen diving apparatus, including diving dress, gas cylinder and breathing apparatus, electrolytic water device, the gas cylinder includes oxygen chamber, compress air cavity and mixed air cavity, the oxygen chamber is connected to mixed air cavity respectively with compression air cavity, the water electrolysis water installations include battery, tank house, oxygen hose, hydrogen pipe and water service pipe, the positive and negative anodes of the battery are each led into tank house, the tank house is equipped with oxygen outlet, hydrogen outlet and discharge outlet, the oxygen hose is equipped with check valve, one end is connect with oxygen outlet, the other end is connect with oxygen chamber, the hydrogen pipe one end is connect with hydrogen outlet, the water service pipe is connect with discharge outlet.Above-mentioned electrolysis water supplies oxygen diving apparatus, can extend the diving time of diving personnel, improves the utilization rate of gas cylinder 20% or more, reduces flow of oxygen, reduce cost.
Description
Technical field
The present invention relates to the invention belongs to equipment of diving under water, specifically a kind of electrolysis water oxygen supply diving apparatus and controlling parties
Method.
Background technology
Existing diving equipment all includes diving mask and air tank, and diving mask has a single function, only simple anti-
Water, and the oxygen feeding pipe in diving mask is connected to air tank, and oxygen is supplied to diving personnel by air tank.But it is latent
The diving time length of water personnel determines with the reserves of oxygen in air tank, its diving time is caused to be extremely limited entirely.
To solve the above-mentioned problems, Authorization Notice No. is that the utility model patent of 203047519 U of CN discloses a kind of electricity
Xie Shui supplies oxygen diving mask, including is covered in the mask body of face, and oxygen supply pipe, mask body are provided in mask body
On be additionally provided with the nasal cavity cover being tightly connected with it and oral mask, oxygen supply pipe is connected to oral mask, which is characterized in that mask sheet
Filtering area, electrolysis zone and oxygen bin are additionally provided on body；Wherein filtering area is arranged in the front end of mask body, the filtering area
End set one side the cover is set side by side with multilayer moisture filter layer inside filtering area successively；Polylith is evenly equipped with inside electrolysis zone
Electrolyte block, electrolyte block are connect with the battery being arranged in mask body；Electrolysis zone is arranged on the excircle of oxygen bin junction
There are discharge outlet, oxygen bin to be connected to the blow vent of electrolysis zone；Be provided with hydrogen discharge pipe at the top of oxygen bin, bottom in oral mask
Oxygen bin bottom oxygen supply pipe connection；An oxygen concentration monitor is also set up inside oxygen bin.This kind of electrolysis water oxygen supply
Diving mask there are the problem of it is as follows：When：Electrolytic water device is integrated with diving mask, leads to the volume of diving mask
It is big inconvenient for use；Second is that：It generates oxygen to be placed directly in oxygen bin, when scuba diver just enters water, be supplied without oxygen, or
When occurring situations such as power-off, it can not be electrolysed, be easy that there are security risks.
Invention content
To overcome deficiency in the prior art, the present invention to provide a kind of electrolysis water oxygen supply diving apparatus.
To achieve the above object, the technical solution adopted by the present invention is as follows：A kind of electrolysis water oxygen supply diving apparatus, including it is latent
Water clothes, gas cylinder and breathing apparatus, the breathing apparatus are connect with gas cylinder by air supply pipe, it is characterised in that：It further include electrolysis water
Device, the gas cylinder include oxygen chamber, compression air cavity and mixed air cavity, the oxygen chamber with compress air cavity be connected to respectively with mixed air cavity with
Air source is provided into mixed gas, the water electrolysis water installations include battery, tank house, oxygen hose, hydrogen pipe and water service pipe, the battery
Positive and negative anodes each lead into tank house, which is equipped with oxygen outlet, hydrogen outlet and discharge outlet, sets on the oxygen hose
There is check valve, one end is connect with oxygen outlet, the connection of the other end and oxygen chamber is sent into the oxygen after being electrolysed in oxygen chamber,
The hydrogen pipe one end is connect with hydrogen outlet to draw the hydrogen in tank house, which connect with discharge outlet for will be electric
Waste water discharge after solution.
Further, diving dress is equipped with solar panel, which fits on diving dress, the sun
The battery of energy solar panel and electrolytic water device is connected as its charging.
Further, further include gas bag, which connect with hydrogen pipe, and the hydrogen pipe is equipped with triple valve, the hydrogen
Outlet pours hydrogen into gas bag when being connected to hydrogen pipe.
Further, oxygen chamber, compression air cavity and mixed air cavity are respectively equipped with gas-detecting device, detect in corresponding chamber
Gas parameter.
Further, oxygen chamber, mixed air cavity and compression air cavity are integrated in an oxygen cylinder, the oxygen bin, mixing gas storehouse
With compression air cavity by gas mixing pipe, which is equipped with flow control valve.
Further, gas mixing pipe is equipped with nozzle.
Further, it is helium to compress the gas filled in air cavity.
Electrolysis water supplies oxygen the control method of diving apparatus, it is characterised in that：Diving apparatus is supplied oxygen using above-mentioned electrolysis water,
Its rate-determining steps is as follows：
Step 1, seawater enters and is electrolyzed to produce oxygen and hydrogen in tank house when diving, and oxygen passes through oxygen hose and accesses oxygen chamber
In；
Step 2, the oxygen in oxygen chamber enters according to ratio with the compressed gas in compression air cavity and mixes in air cavity, is mixed into
The mixed gas that diver uses, the mixed gas enter breathing apparatus by air feed tank, are used for diver；
Step 3, the hydrogen and waste water for being electrolysed generation are discharged by hydrogen outlet and discharge outlet respectively.
Optimization, the battery of electrolytic water device passes through the solar panel charging on diving dress.
Optimization, when diving faces a danger, hydrogen, which is passed through in gas bag, inflates gas bag.
By the above-mentioned description of this invention it is found that compared with prior art, electrolysis water oxygen supply diving provided by the invention is set
Standby, seawater electrolysis is generated oxygen and hydrogen by the equipment when use, which is mixed into the compressed air in gas tank for latent
The mixed gas that water person uses can extend the diving time of diving personnel using electrolysis water oxygen supply diving apparatus, improve gas
The utilization rate of bottle reduces flow of oxygen 20% or more, reduces cost.
Description of the drawings
Fig. 1 is the structural schematic diagram that electrolysis water of the present invention supplies oxygen diving apparatus.
Fig. 2 is the structural schematic diagram that electrolysis water of the present invention supplies oxygen diving apparatus electrolytic water device.
Specific implementation mode
Below by way of specific implementation mode, the invention will be further described.
Shown in Fig. 2, a kind of electrolysis water supplies oxygen diving apparatus, including diving dress 1, breathing apparatus 2, gas cylinder 3,
Electrolytic water device 4, gas bag 5；
The tow sides of diving dress 1 post solar panel 11 respectively, which fits in diving dress
Tow sides, its charging should be connected as with the battery of electrolytic water device 4；
Breathing apparatus 2 is connect with gas cylinder 3 by air supply pipe 21；
Oxygen chamber 31, compression air cavity 32, mixed air cavity 33 and gas mixing pipe 34, the oxygen chamber 31 and compressed gas are equipped in gas cylinder 3
Chamber 32 is connected to by gas mixing pipe 34 to provide air source into mixed gas with mixed air cavity 33 respectively, the gas filled in the compression air cavity 32
For helium, which is connect by air supply pipe 21 with breathing apparatus 2, which is equipped with 341 He of flow control valve
Nozzle 342, the tolerance of oxygen and compressed gas is controlled by flow control valve 341, and oxygen sprays reality with compressed gas by nozzle 342
Now quickly mixing, oxygen chamber 31, compression air cavity 32 and mixed air cavity 33 are respectively equipped with gas-detecting device, detect in corresponding chamber
Gas parameter, and then according to the flow of detection parameters control flow control valve 341 and nozzle 342；
Electrolytic water device 4 includes battery 41, tank house 42, oxygen hose 43, hydrogen pipe 44 and water service pipe 45, the battery 41
Positive and negative anodes are each led into tank house 42, which is equipped with oxygen outlet 421, hydrogen outlet 422 and discharge outlet 423,
The oxygen hose 43 is equipped with check valve 431, and one end connect with oxygen outlet 421, the other end and oxygen chamber 31 are connected with will be electric
Oxygen after solution is sent into oxygen chamber 31, which connect with hydrogen outlet 421, the other end and gas bag 5 connect, and
Hydrogen pipe 44 is equipped with triple valve 441 to draw the hydrogen in tank house, which connect with discharge outlet 423 for inciting somebody to action
Waste water discharge after electrolysis；
Gas bag 5 is set on diving dress 1 or gas cylinder 3, which connect with hydrogen pipe 44, which passes through threeway
Hydrogen, the triple valve 441 are poured into gas bag when hydrogen outlet 421 is connected to by valve 441 with gas bag 5 by hydrogen outlet 421 and gas
When packet 5 disconnects, arranged outside hydrogen.
The control method of diving apparatus is supplied oxygen referring to figs. 1 to the electrolysis water of Fig. 2, it is characterised in that：Use above-mentioned electrolysis
Water supplies oxygen diving apparatus, and rate-determining steps are as follows：
Step 1, diver wears diving dress, and seawater, which enters, when diving is electrolyzed to produce oxygen and hydrogen in tank house, oxygen is logical
It crosses in oxygen hose access oxygen chamber, hydrogen is discharged by hydrogen discharge；
Step 2, the oxygen in oxygen chamber enters according to ratio with the compressed helium gas in compression air cavity and mixes in air cavity, mixing
The mixed gas used at diver, the mixed gas enter breathing apparatus by air feed tank, are used for diver；
When encountering crisis circumstances, hydrogen inflates gas bag by entering gas bag, is assisted diver using gas bag buoyancy
Water outlet；
Step 3, the hydrogen and waste water for being electrolysed generation are discharged by hydrogen outlet and discharge outlet respectively；
Step 4, after diving, diving dress is hung to dry, by the solar panels on diving dress to the electricity of electrolytic water device
It charges in pond.
This kind of electrolysis water supplies oxygen diving apparatus, and seawater electrolysis is generated oxygen and hydrogen by the equipment when use, the oxygen with
Compressed air in gas tank is mixed into the mixed gas used for diver, can be prolonged using electrolysis water oxygen supply diving apparatus
The diving time of long diving personnel improves the utilization rate of gas cylinder 20% or more, reduces flow of oxygen, reduce cost；In addition should
The hydrogen that kind electrolysis water oxygen supply diving apparatus is electrolysed out can fill gas bag, assisting diver escape in emergency survival.
A kind of specific implementation mode of the present invention is above are only, but the design concept of the present invention is not limited thereto, all profits
The change for carrying out unsubstantiality to the present invention with this design, should all belong to the behavior for invading the scope of the present invention.
Claims (10)
1. a kind of electrolysis water supplies oxygen diving apparatus, including diving dress, gas cylinder and breathing apparatus, the breathing apparatus pass through with gas cylinder
Air supply pipe connects, it is characterised in that：Further include electrolytic water device, the gas cylinder includes oxygen chamber, compression air cavity and mixed air cavity, is somebody's turn to do
Oxygen chamber is connected to mixed air cavity respectively with compression air cavity to provide air source into mixed gas, the water electrolysis water installations include battery,
The positive and negative anodes of tank house, oxygen hose, hydrogen pipe and water service pipe, the battery are each led into tank house, which is equipped with oxygen
Gas outlet, hydrogen outlet and discharge outlet, the oxygen hose are equipped with check valve, and one end connect with oxygen outlet, the other end and oxygen
With in the oxygen feeding oxygen chamber after be electrolysed, which connect with hydrogen outlet with will be in tank house for air cavity connection
Hydrogen is drawn, which connect with discharge outlet for the waste water discharge after being electrolysed.
2. a kind of electrolysis water according to claim 1 supplies oxygen diving apparatus, it is characterised in that：The diving dress is equipped with too
Positive energy solar panel, the solar panel fit on diving dress, the battery connection of the solar panel and electrolytic water device
It charges for it.
3. a kind of electrolysis water according to claim 1 supplies oxygen diving apparatus, it is characterised in that：Further include gas bag, the gas bag
It is connect with hydrogen pipe, the hydrogen pipe is equipped with triple valve, which pours hydrogen into gas bag when being connected to hydrogen pipe.
4. a kind of electrolysis water according to claim 1 supplies oxygen diving apparatus, it is characterised in that：The oxygen chamber, compressed gas
Chamber and mixed air cavity are respectively equipped with gas-detecting device, detect the gas parameter in corresponding chamber.
5. a kind of electrolysis water according to claim 1 or 4 supplies oxygen diving apparatus, it is characterised in that：The oxygen chamber, mixed gas
Chamber and compression air cavity are integrated in an oxygen cylinder, and the oxygen bin, mixing gas storehouse and compression air cavity pass through gas mixing pipe, the gas mixing pipe
It is equipped with flow control valve.
6. a kind of electrolysis water according to claim 5 supplies oxygen diving apparatus, it is characterised in that：The gas mixing pipe is equipped with spray
Mouth.
7. a kind of electrolysis water according to claim 1 supplies oxygen diving apparatus, it is characterised in that：It is filled in the compression air cavity
Gas be helium.
8. electrolysis water supplies oxygen the control method of diving apparatus, it is characterised in that：Diving apparatus is supplied oxygen using above-mentioned electrolysis water,
Rate-determining steps are as follows：
Step 1, seawater enters and is electrolyzed to produce oxygen and hydrogen in tank house when diving, and oxygen passes through oxygen hose and accesses in oxygen chamber；
Step 2, the oxygen in oxygen chamber enters according to ratio with the compressed gas in compression air cavity and mixes in air cavity, is mixed into diving
The mixed gas that member uses, the mixed gas enter breathing apparatus by air feed tank, are used for diver；
Step 3, the hydrogen and waste water for being electrolysed generation are discharged by hydrogen outlet and discharge outlet respectively.
9. the control method of electrolysis water oxygen supply diving apparatus according to claim 8, it is characterised in that：Electrolytic water device
Battery passes through the solar panel charging on diving dress.
10. the control method of electrolysis water oxygen supply diving apparatus according to claim 8 or claim 9, it is characterised in that：It is met in diving
It is passed through in gas bag to hydrogen when danger and gas bag is inflated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284677.0A CN108342745A (en) | 2018-04-02 | 2018-04-02 | A kind of electrolysis water oxygen supply diving apparatus and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810284677.0A CN108342745A (en) | 2018-04-02 | 2018-04-02 | A kind of electrolysis water oxygen supply diving apparatus and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108342745A true CN108342745A (en) | 2018-07-31 |
Family
ID=62957284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810284677.0A Pending CN108342745A (en) | 2018-04-02 | 2018-04-02 | A kind of electrolysis water oxygen supply diving apparatus and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108342745A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111284653A (en) * | 2020-02-19 | 2020-06-16 | 李爱群 | Multifunctional water first-aid kit |
| CN112591049A (en) * | 2020-12-29 | 2021-04-02 | 翟荣梅 | Dive oxygen cylinder with function of saving oneself |
| CN112896463A (en) * | 2021-03-13 | 2021-06-04 | 浙江国际海运职业技术学院 | Underwater multifunctional rescue underwater device |
| CN113415396A (en) * | 2021-05-18 | 2021-09-21 | 陈妹 | Underwater rescue device with strong protectiveness |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991524A (en) * | 2014-05-09 | 2014-08-20 | 宁波市成大机械研究所 | Gas bag capable of autoinflation underwater |
| CN204527588U (en) * | 2015-04-15 | 2015-08-05 | 卢彦儒 | A kind of underwater breathing apparatus |
| CN104859818A (en) * | 2014-02-24 | 2015-08-26 | 卢茂高 | Underwater natural breathing device |
-
2018
- 2018-04-02 CN CN201810284677.0A patent/CN108342745A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859818A (en) * | 2014-02-24 | 2015-08-26 | 卢茂高 | Underwater natural breathing device |
| CN103991524A (en) * | 2014-05-09 | 2014-08-20 | 宁波市成大机械研究所 | Gas bag capable of autoinflation underwater |
| CN204527588U (en) * | 2015-04-15 | 2015-08-05 | 卢彦儒 | A kind of underwater breathing apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111284653A (en) * | 2020-02-19 | 2020-06-16 | 李爱群 | Multifunctional water first-aid kit |
| CN112591049A (en) * | 2020-12-29 | 2021-04-02 | 翟荣梅 | Dive oxygen cylinder with function of saving oneself |
| CN112896463A (en) * | 2021-03-13 | 2021-06-04 | 浙江国际海运职业技术学院 | Underwater multifunctional rescue underwater device |
| CN113415396A (en) * | 2021-05-18 | 2021-09-21 | 陈妹 | Underwater rescue device with strong protectiveness |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180731 |