CN108688784B - Operation method of electric hydraulic water spraying unit of ship propulsion system - Google Patents
Operation method of electric hydraulic water spraying unit of ship propulsion system Download PDFInfo
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- CN108688784B CN108688784B CN201810637824.8A CN201810637824A CN108688784B CN 108688784 B CN108688784 B CN 108688784B CN 201810637824 A CN201810637824 A CN 201810637824A CN 108688784 B CN108688784 B CN 108688784B
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- hydraulic
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- water inlet
- hydraulic cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H2011/004—Marine propulsion by water jets using the eductor or injector pump principle, e.g. jets with by-pass fluid paths
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
When the electric hydraulic water spraying propulsion device starts to advance, the storage battery pack supplies power to the two-way oil pressure pump stations through a circuit, and at least two-way oil pressure pump stations on two sides are controlled by the circuit control center to respectively control the hydraulic cylinders on two sides to advance and retreat simultaneously; when the hydraulic pistons in the hydraulic bin bodies on one side advance, the hydraulic pistons in the hydraulic bin bodies on the other side retreat, the hydraulic pistons in the hydraulic bin bodies on the two sides alternately advance according to the advance and retreat, and the ship or the underwater vehicle is pushed to navigate; according to the invention, the hydraulic cylinder is driven by the battery pack, the hydraulic cylinder drives the hydraulic piston to reciprocate in the hydraulic pressure bin body to pressurize water in the hydraulic pressure bin body, and the thrust of water spraying acts on the ship body to advance; the silencing effect is good, energy conservation and emission reduction are achieved, and the sailing safety of ships and submarines under the water surface can be ensured.
Description
Technical Field
The invention relates to an operation method of a ship propulsion device for shipbuilding, in particular to an operation method of an electro-hydraulic water spraying unit of a ship propulsion system.
Background
At present, most of the conventional ship propulsion devices in the shipbuilding industry are driven by an engine to drive a propeller, and because the engine used by a ship occupies a larger fixed space, the engine needs to be matched with a transmission shaft and the propeller to influence the installation of other facilities of the ship body, the installation and maintenance of the engine of the ship are complex projects, and in addition, a larger space is needed for replacement; the parts of the propeller type propulsion are worn out quickly and maintained frequently in the using process; when the electric hydraulic water spraying unit is suitable for a submarine, the collection amount of waste gas is large, the noise is large, the inequality of production enterprises and users is caused, and the operation method of the electric hydraulic water spraying unit of the ship propulsion system is provided.
Disclosure of Invention
The invention aims to overcome the defect that most of ship propulsion devices in the traditional shipbuilding industry adopt engines to drive propellers to push, and because the engines used by ships occupy larger fixed space, the engines need to be matched with a transmission shaft and the propellers to influence the installation of other facilities of the ship body, the installation and maintenance of the engines of the ships are complex projects, and in addition, larger space is needed; the parts of the propeller type propulsion are worn out quickly and maintained frequently in the using process; when the hydraulic cylinder is suitable for a submarine, the waste gas collection amount is large, the noise is large, the inequality of production enterprises and users is caused, and through reasonable design, the operation method of the electric hydraulic water spraying unit of the ship propulsion system is provided; matching the battery packs according to different ships; the hydraulic piston can produce thrust in a reciprocating way, and the hydraulic piston has the advantages of light weight, convenient and flexible installation and maintenance, large thrust, energy conservation and emission reduction; when the device is suitable for underwater submarines, the silencing effect is good, and the navigation safety of ships and submarines on the water surface and under water can be ensured.
In order to achieve the above purpose, the invention adopts the following technical scheme: the operation method of the ship propulsion system electro-hydraulic water spraying unit comprises a water pressure bin body, a hydraulic cylinder, a hydraulic piston, a hydraulic cylinder rod, a drainage pressure bin, a water inlet bin, a bin opening blocking plate, a bin bottom blocking plate, a propulsion water spray opening, a back water spray opening, a second water inlet, a reverse propulsion pipeline, a second water inlet valve, a forward electromagnetic valve, a first water inlet valve port, a reverse opening electromagnetic valve, a hydraulic cylinder flange, a bidirectional oil pressure pump station, a hydraulic inlet, a hydraulic outlet, a pressure bin body connecting plate, a storage battery pack and a circuit control center; at least two water pressure bin bodies are symmetrically arranged on two sides of the electric hydraulic water spraying propulsion device, and pressure bin body connecting plates are respectively arranged between the front parts and the rear parts of the two water pressure bin bodies; the hydraulic pressure bin body is provided with a hydraulic cylinder at the rear end, a hydraulic inlet and a hydraulic outlet are respectively arranged at two sides of the rear end of the hydraulic cylinder, a bidirectional oil pressure pump station is arranged at one side of the hydraulic cylinder, and an oil pressure pipeline is arranged between the bidirectional oil pressure pump station and the hydraulic inlet and the hydraulic outlet respectively; one side of the bidirectional oil pressure pump station is provided with a storage battery pack, a circuit is arranged between the storage battery pack and the bidirectional oil pressure pump station respectively, and the end part of the circuit is provided with a circuit control center; one end of the water pressure bin body is provided with a bin bottom blocking plate, the other end of the water pressure bin body is provided with a bin opening blocking plate, a water pressure piston is arranged in the water pressure bin body, a water inlet bin is arranged between the water pressure piston and the bin bottom blocking plate, and a water discharge pressure bin is arranged between the water pressure piston and the bin opening blocking plate; a water inlet is reserved on the bin body at the end part of the water inlet bin, a second water inlet which is backwards is arranged in the water inlet, and a second water inlet valve is arranged on the second water inlet; a water inlet is reserved on the bin body at the end part of the drainage pressure bin, and a first water inlet valve port is arranged in the water inlet;
the hydraulic cylinder opening is provided with a hydraulic cylinder flange, the hydraulic cylinder flange is provided with a central reserved hole, the bin bottom blocking plate is correspondingly arranged with the central reserved hole of the hydraulic cylinder flange, and a hydraulic cylinder rod is arranged in the central reserved hole; one end of the hydraulic cylinder rod is arranged corresponding to the hydraulic cylinder piston, the other end of the hydraulic cylinder rod is arranged corresponding to the center of the hydraulic piston, and a connecting pin shaft is arranged between the other end of the hydraulic cylinder rod and the center of the hydraulic piston;
a back water jet is reserved in the center of the bin opening blocking plate, a reverse propulsion pipeline is arranged in the back water jet, a pipe orifice of the reverse propulsion pipeline is arranged in a reverse direction, and a reverse opening electromagnetic valve is arranged on the pipe orifice; at least two propelling water jet ports are uniformly distributed on the periphery of the concentric circles of the backward water jet ports, and an advancing electromagnetic valve is arranged at the outer end of each propelling water jet port;
when the electric hydraulic water jet propulsion device starts to advance, the storage battery pack supplies power to the two-way oil pressure pump stations through a circuit, and at least two-way oil pressure pump stations on two sides are controlled by the circuit control center to respectively control the hydraulic cylinders on two sides to advance and retreat simultaneously;
the hydraulic cylinders on the two sides drive the hydraulic pistons in the two hydraulic pressure bin bodies on the two sides to advance and retreat simultaneously.
When the hydraulic piston in the hydraulic pressure bin body at one side advances, the second water inlet valve at the end part of the water inlet bin is opened to feed water, and simultaneously, the advancing electromagnetic valve is opened to spray water; the water pressure bin body is propelled by the reaction force of water spraying of the advancing electromagnetic valve.
The hydraulic piston in the hydraulic pressure bin body at one side retreats while the hydraulic pressure bin body at the other side is propelled, the advancing electromagnetic valve is closed, the first water inlet valve is opened for water inlet, and the second water inlet valve of the hydraulic pressure bin body is simultaneously propelled by spraying water outwards; the hydraulic pistons in the hydraulic pressure bin bodies at the two sides alternately push forward and backward according to the forward and backward directions, so as to push the ship or the underwater vehicle to navigate.
When steering is needed, the left-side bidirectional oil pressure pump station is turned off through the circuit control center, and the right-side bidirectional oil pressure pump station operates normally; when turning right, the bidirectional oil pressure pump station on the right side is shut down by the circuit control center, and the bidirectional oil pressure pump station on the left side operates normally.
When the water spraying device needs to be retreated, after the forward electromagnetic valve of the propelling water spraying port is closed, a control circuit of the forward electromagnetic valve is converted into a control circuit of the reverse port electromagnetic valve; the reverse opening electromagnetic valve is opened, pressurized water in the water pressure bin bodies at two sides is sprayed by the reverse opening electromagnetic valve, and the ship or the underwater vehicle is driven to retreat by the reaction force of the water sprayed by the reverse opening electromagnetic valve.
The beneficial effects are that: according to the invention, the hydraulic cylinder is driven by the storage battery group, the hydraulic cylinder drives the hydraulic piston to reciprocate in the hydraulic pressure bin body to pressurize water in the hydraulic pressure bin body, the pressurized water is sprayed out through water spraying ports in different directions to generate thrust, and the thrust of water spraying acts on the ship body to advance; matching the battery packs according to different ships; the hydraulic piston can produce thrust in a reciprocating way, and the hydraulic piston has the advantages of light weight, convenient and flexible installation and maintenance, large thrust, energy conservation and emission reduction; when the device is suitable for underwater submarines, the silencing effect is good, and the navigation safety of ships and submarines on the water surface and under water can be ensured.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a general assembly structure;
FIG. 2 is a schematic top view of the travelling car of FIG. 1;
FIG. 3 is a partial schematic view of the structure of FIG. 2;
FIG. 4 is a schematic side elevational view of the dolly of FIG. 2;
in fig. 1, 2, 3, 4: the hydraulic pressure storehouse body 1, the pneumatic cylinder 2, the hydraulic piston 3, the pneumatic cylinder jar pole 4, the drainage pressure storehouse 5, the water inlet storehouse 6, storehouse mouth closure 7, storehouse bottom closure 8, advance water jet 9, back water jet 10, second water inlet 11, back advance pipeline 12, second water inlet valve 13, advance solenoid valve 14, first water inlet valve port 15, back mouth solenoid valve 16, pneumatic cylinder flange 17, two-way oil pressure pump station 18, hydraulic inlet 19, hydraulic outlet 20, pressure storehouse body even pull 21, storage battery 22, circuit control center 23.
Detailed Description
The invention is further described in detail below with reference to examples and embodiments:
example 1
At least two water pressure bin bodies 1 are symmetrically arranged on two sides of the electro-hydraulic water jet propulsion device, and pressure bin body connecting plates 21 are respectively arranged between the front parts and the rear parts of the two water pressure bin bodies 1; the rear end of the water pressure bin body 1 is respectively provided with a hydraulic cylinder 2, two sides of the rear end of the hydraulic cylinder 2 are respectively provided with a hydraulic inlet 19 and a hydraulic outlet 20, one side of the hydraulic cylinder 2 is provided with a bidirectional oil pressure pump station 18, and an oil pressure pipeline is arranged between the bidirectional oil pressure pump station 18 and the hydraulic inlet 19 and the hydraulic outlet 20 respectively; a storage battery pack 22 is arranged on one side of the bidirectional oil pressure pump station 18, a circuit is arranged between the storage battery pack 22 and the bidirectional oil pressure pump station 18, and a circuit control center 23 is arranged at the end part of the circuit; one end of the water pressure bin body 1 is provided with a bin bottom blocking plate 8, the other end of the water pressure bin body 1 is provided with a bin opening blocking plate 7, a water pressure piston 3 is arranged in the water pressure bin body 1, a water inlet bin 6 is arranged between the water pressure piston 3 and the bin bottom blocking plate 8, and a water discharge pressure bin 5 is arranged between the water pressure piston 3 and the bin opening blocking plate 7; a water inlet is reserved on the bin body at the end part of the water inlet bin 6, a second water inlet 11 is arranged in the water inlet, and a second water inlet valve 13 is arranged on the second water inlet 11; a water inlet is reserved on the bin body at the end part of the drainage pressure bin 5, and a first water inlet valve port 15 is arranged in the water inlet;
the hydraulic cylinder 2 is provided with a hydraulic cylinder flange 17 at the mouth, the hydraulic cylinder flange 17 is provided with a central reserved hole, the bin bottom blocking plate 8 is arranged corresponding to the central reserved hole of the hydraulic cylinder flange 17, and the hydraulic cylinder rod 4 is arranged in the central reserved hole; one end of the hydraulic cylinder rod 4 is arranged corresponding to the hydraulic cylinder piston, the other end of the hydraulic cylinder rod 4 is arranged corresponding to the center of the hydraulic piston 3, and a connecting pin shaft is arranged between the other end of the hydraulic cylinder rod 4 and the center of the hydraulic piston 3;
the center of the bin port plugging plate 7 is reserved with a back water jet 10, a back propulsion pipeline 12 is arranged in the back water jet 10, the pipe orifice of the back propulsion pipeline 12 is arranged in a reverse direction, and a back port electromagnetic valve 16 is arranged on the pipe orifice; at least two propelling water spray ports 9 are uniformly distributed on the periphery of the concentric circle of the backward water spray ports 10, and an advancing electromagnetic valve 14 is arranged at the outer end of each propelling water spray port 9;
when the electric hydraulic water jet propulsion device starts to advance, the storage battery pack 22 supplies power to the two-way oil pressure pump stations 18 through a circuit, and at least two-way oil pressure pump stations 18 on two sides are controlled by the circuit control center 23 to respectively control the hydraulic cylinders 2 on two sides to advance and retreat simultaneously;
example 2
The hydraulic cylinders 2 on two sides drive the hydraulic pistons 3 in the two hydraulic pressure bin bodies 1 on two sides to advance and retreat simultaneously.
Example 3
When the hydraulic piston 3 in the water pressure bin body 1 at one side advances, the second water inlet valve 13 at the end part of the water inlet bin 6 is opened for water inlet, and meanwhile, the advancing electromagnetic valve 14 is opened for water spraying; the water pressure bin 1 is propelled by the reaction force of the water sprayed from the advancing solenoid valve 14.
Example 4
The hydraulic piston 3 in the hydraulic pressure bin body 1 on one side retreats while the hydraulic pressure bin body 1 on the other side advances, the advancing electromagnetic valve 14 is closed, the first water inlet valve port 15 is opened for water inlet, and the second water inlet valve 13 of the hydraulic pressure bin body 1 simultaneously sprays water outwards for propulsion; the hydraulic pistons 3 in the hydraulic pressure bin bodies 1 at the two sides alternately push forward and backward according to the forward and backward directions to push the ship or the underwater vehicle to navigate
Example 5
When steering is needed, during left steering, the left bidirectional oil pressure pump station 18 is turned off through the circuit control center 23, and the right bidirectional oil pressure pump station 18 operates normally; when turning right, the bidirectional oil pressure pump station 18 on the right side is shut down by the circuit control center 23, and the bidirectional oil pressure pump station 18 on the left side operates normally.
Example 6
When the back is needed, after the forward electromagnetic valve 14 of the propulsion water jet 9 is closed, the control circuit of the forward electromagnetic valve 14 is converted into the control circuit of the reverse opening electromagnetic valve 16; the reverse opening electromagnetic valve 16 is opened, pressurized water in the water pressure bin bodies 1 at two sides is sprayed by the reverse opening electromagnetic valve 16, and the ship or the underwater vehicle is driven to retreat by the reaction force of the water sprayed by the reverse opening electromagnetic valve 16.
Claims (3)
1. The application method of the ship propulsion system electro-hydraulic water spraying unit comprises a water pressure bin body (1), a hydraulic cylinder (2), a hydraulic piston (3), a hydraulic cylinder rod (4), a drainage pressure bin (5), a water inlet bin (6), a bin port blocking plate (7), a bin bottom blocking plate (8), a propulsion water spraying port (9), a retreating water spraying port (10), a second water inlet (11), a reverse propulsion pipeline (12), a second water inlet valve (13), a forward electromagnetic valve (14), a first water inlet valve port (15), a reverse port electromagnetic valve (16), a hydraulic cylinder flange (17), a bidirectional oil pressure pump station (18), a hydraulic inlet (19), a hydraulic outlet (20), a pressure bin body connecting plate (21), a storage battery pack (22) and a circuit control center (23); the method is characterized in that: at least two water pressure bin bodies (1) are symmetrically arranged on two sides of the electric hydraulic water jet propulsion device, and pressure bin body connecting plates (21) are respectively arranged between the front parts and the rear parts of the two water pressure bin bodies (1); the hydraulic pressure bin body (1) is provided with a hydraulic cylinder (2) at the rear end, two sides of the rear end of the hydraulic cylinder (2) are provided with a hydraulic inlet (19) and a hydraulic outlet (20) respectively, one side of the hydraulic cylinder (2) is provided with a bidirectional oil pressure pump station (18), and an oil pressure pipeline is arranged between the bidirectional oil pressure pump station (18) and the hydraulic inlet (19) and the hydraulic outlet (20) respectively; a storage battery pack (22) is arranged on one side of the bidirectional oil pressure pump station (18), a circuit is arranged between the storage battery pack (22) and the bidirectional oil pressure pump station (18), and a circuit control center (23) is arranged at the end part of the circuit; one end of the water pressure bin body (1) is provided with a bin bottom blocking plate (8), the other end of the water pressure bin body (1) is provided with a bin opening blocking plate (7), the water pressure bin body (1) is internally provided with a water pressure piston (3), a water inlet bin (6) is arranged between the water pressure piston (3) and the bin bottom blocking plate (8), and a water discharge pressure bin (5) is arranged between the water pressure piston (3) and the bin opening blocking plate (7); a water inlet is reserved on the bin body at the end part of the water inlet bin (6), a second water inlet (11) which is backwards arranged in the water inlet, and a second water inlet valve (13) is arranged on the second water inlet (11); a water inlet is reserved on the bin body at the end part of the drainage pressure bin (5), and a first water inlet valve port (15) is arranged in the water inlet;
the hydraulic cylinder is characterized in that a hydraulic cylinder flange (17) is arranged at the opening of the hydraulic cylinder (2), the hydraulic cylinder flange (17) is provided with a central reserved hole, the hydraulic cylinder rod (4) is arranged in the central reserved hole, and the hydraulic cylinder flange (17) is provided with a central reserved hole; one end of the hydraulic cylinder rod (4) is arranged corresponding to the hydraulic cylinder piston, the other end of the hydraulic cylinder rod (4) is arranged corresponding to the center of the hydraulic piston (3), and a connecting pin shaft is arranged between the other end of the hydraulic cylinder rod (4) and the center of the hydraulic piston (3);
a back water jet (10) is reserved at the center of the bin opening blocking plate (7), a reverse propulsion pipeline (12) is arranged in the back water jet (10), a pipe orifice of the reverse propulsion pipeline (12) is arranged in a reverse direction, and a reverse opening electromagnetic valve (16) is arranged on the pipe orifice; at least two propelling water spray ports (9) are uniformly distributed on the periphery of the concentric circles of the backward water spray ports (10), and an advancing electromagnetic valve (14) is arranged at the outer end of each propelling water spray port (9);
when the electric hydraulic water jet propulsion device starts to advance, the storage battery pack (22) supplies power to the two-way oil pressure pump stations (18) through a circuit, and at least two-way oil pressure pump stations (18) on two sides are controlled by the circuit control center (23) to respectively control the hydraulic cylinders (2) on two sides to advance and retreat simultaneously;
the hydraulic piston (3) in the hydraulic pressure bin body (1) at one side retreats while the hydraulic pressure bin body (1) at the other side advances, the advancing electromagnetic valve (14) is closed, the first water inlet valve (15) is opened for water inlet, and the second water inlet valve (13) of the hydraulic pressure bin body (1) simultaneously sprays water outwards for propulsion; the hydraulic pistons (3) in the hydraulic pressure bin bodies (1) at the two sides alternately push forward and backward according to the forward and backward directions to push the ship or the underwater vehicle to navigate;
when steering is needed, during left steering, the left bidirectional oil pressure pump station (18) is turned off through the circuit control center (23), and the right bidirectional oil pressure pump station (18) operates normally; when turning right, the bidirectional oil pressure pump station (18) on the right side is shut down by the circuit control center (23), and the bidirectional oil pressure pump station (18) on the left side normally operates;
when the water jet is required to be retreated, after the forward electromagnetic valve (14) of the propulsion water jet (9) is closed, a control circuit of the forward electromagnetic valve (14) is converted into a control circuit of the reverse opening electromagnetic valve (16); the reverse opening electromagnetic valve (16) is opened, pressurized water in the water pressure bin bodies (1) at two sides is sprayed through the reverse opening electromagnetic valve (16), and the ship or the underwater vehicle is driven to retreat by the reaction force of the water sprayed by the reverse opening electromagnetic valve (16).
2. The method of using an electro-hydraulic water jet unit of a marine propulsion system according to claim 1, wherein: the hydraulic cylinders (2) at the two sides drive the hydraulic pistons (3) in the two hydraulic pressure bin bodies (1) at the two sides to advance and retreat simultaneously.
3. The method of using an electro-hydraulic water jet unit of a marine propulsion system according to claim 1, wherein: when the hydraulic piston (3) in the water pressure bin body (1) at one side advances, the second water inlet valve (13) at the end part of the water inlet bin (6) is opened for water inlet, and simultaneously, the advancing electromagnetic valve (14) is opened for water spraying; the water pressure bin body (1) is propelled by the reaction force of water spraying of the advancing electromagnetic valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637824.8A CN108688784B (en) | 2018-06-20 | 2018-06-20 | Operation method of electric hydraulic water spraying unit of ship propulsion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637824.8A CN108688784B (en) | 2018-06-20 | 2018-06-20 | Operation method of electric hydraulic water spraying unit of ship propulsion system |
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| CN108688784A CN108688784A (en) | 2018-10-23 |
| CN108688784B true CN108688784B (en) | 2023-08-15 |
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| CN201810637824.8A Active CN108688784B (en) | 2018-06-20 | 2018-06-20 | Operation method of electric hydraulic water spraying unit of ship propulsion system |
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| CN109625227B (en) * | 2018-11-14 | 2020-10-20 | 中国船舶重工集团公司第七一九研究所 | Underwater flexible jet propulsion system and use method thereof |
| CN109927871A (en) * | 2019-01-30 | 2019-06-25 | 上海弥蒂电子科技有限公司 | Water jet marine engine |
| CN110371280B (en) * | 2019-08-01 | 2021-03-23 | 张玉华 | Box marine propulsor |
| CN110606184A (en) * | 2019-10-08 | 2019-12-24 | 中国海洋大学 | Piston propeller and piston propelling equipment |
| CN112319754A (en) * | 2020-11-17 | 2021-02-05 | 廖代云 | Small-size pleasure-boat underwater propulsor |
| CN112695724B (en) * | 2020-12-14 | 2022-06-10 | 国网福建省电力有限公司 | Hydraulic supporting mechanism of ship lift |
| CN116280137A (en) * | 2023-03-17 | 2023-06-23 | 南方科技大学 | Double-hole water jet propulsion mechanism, underwater vehicle and control method |
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| KR20130117373A (en) * | 2012-04-17 | 2013-10-28 | 한밭대학교 산학협력단 | Semisubmarine boat for propulsion apparatus |
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| JPH06144371A (en) * | 1992-06-03 | 1994-05-24 | I D C Kk | Propulsion device for ship |
| CN1278503A (en) * | 1999-06-17 | 2001-01-03 | 施仲伟 | Noise-less water-pressing and water-spraying propeller for submarine |
| KR20130117373A (en) * | 2012-04-17 | 2013-10-28 | 한밭대학교 산학협력단 | Semisubmarine boat for propulsion apparatus |
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