CN112432632B - Multi-beam flow guide device for moon pool structure scientific investigation ship - Google Patents

Multi-beam flow guide device for moon pool structure scientific investigation ship Download PDF

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Publication number
CN112432632B
CN112432632B CN202011282577.8A CN202011282577A CN112432632B CN 112432632 B CN112432632 B CN 112432632B CN 202011282577 A CN202011282577 A CN 202011282577A CN 112432632 B CN112432632 B CN 112432632B
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plate
wave
moon pool
ring
ship
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CN112432632A (en
Inventor
何旭涛
李世强
彭维龙
陈国东
林晓波
徐蓓蓓
张引贤
潘郁芳
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Zhejiang Zhoushan Institute Of Oceanic Electric Power Transmission Co ltd
State Grid Zhejiang Electric Power Co Ltd
Zhoushan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Zhejiang Zhoushan Institute Of Oceanic Electric Power Transmission Co ltd
State Grid Zhejiang Electric Power Co Ltd
Zhoushan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
    • G01C13/008—Surveying specially adapted to open water, e.g. sea, lake, river or canal measuring depth of open water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/521—Constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B2003/147—Moon-pools, e.g. for offshore drilling vessels
    • 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
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
  • Revetment (AREA)

Abstract

The invention discloses a multi-beam flow guide device for a moon pool structure scientific investigation ship, and relates to the field of ships. During the navigation of the ship, a large amount of bubbles can be generated near the water plane of the bow of the ship due to broken waves, splashing and the like, and if the bubbles leak to the bottom of the ship with water flow, the measuring accuracy of the multiple beams is greatly influenced. The invention comprises a pressure wave plate, a wave-reducing ring and a flow guide structure, wherein the pressure wave plate is arranged at the lower part of a moon pool, a gap is arranged between the periphery of the pressure wave plate and the side wall of the moon pool, the wave-reducing ring is arranged at the end part of the lower end of the moon pool, the caliber of the inner side of the upper end of the wave-reducing ring is the same as that of the lower end of the moon pool, the inner diameter of the wave-reducing ring increases in an arc shape from top to bottom, the flow guide structure comprises a bottom plate arranged at the lower end of the wave-reducing ring, a wave-reducing hole is arranged on the bottom plate, the hole periphery of the wave-reducing hole is fixedly connected with a ring opening at the lower end of the wave-reducing ring, and the bottom plate is connected with the bottom of a ship body through a rib plate. The device can effectively reduce the fluctuation of water flow entering the ship bottom and increase the measurement accuracy of the multi-beam instrument.

Description

Multi-beam flow guide device for moon pool structure scientific investigation ship
Technical Field
The invention relates to the field of ships, in particular to a multi-beam flow guide device for a moon pool structure scientific investigation ship.
Background
The multi-beam sounding system is a high and new device for seabed detection which is rapidly developed in recent years, and plays an extremely important role in current ocean engineering, ocean development, ocean research and seabed resource environment investigation.
During the navigation of the ship, a large amount of bubbles can be generated near the water plane of the bow of the ship due to broken waves, splashing and the like, and if the bubbles leak to the bottom of the ship with water flow, the measuring accuracy of the multiple beams is greatly influenced. The conventional air guide sleeve molded lines are mostly in a circular arc streamline shape and are in smooth transition connection with a main hull, and the hull head molded lines influence the anti-bubble performance of the multi-beam air guide sleeve. Meanwhile, after the air guide sleeve is installed, the resistance of the ship is increased, and the aim of high-speed sailing of the ship is difficult to meet.
Disclosure of Invention
The technical problem to be solved and the technical task provided by the invention are to perfect and improve the prior technical scheme, and provide a multi-beam flow guide device for a moon pool structure scientific investigation ship, so as to improve the measurement precision of multi-beams. Therefore, the invention adopts the following technical scheme.
The multi-beam flow guide device comprises a pressure wave plate, a wave reduction ring and a flow guide structure arranged on the periphery of the wave reduction ring, wherein the pressure wave plate is arranged on the lower portion of a moon pool, a gap is formed between the periphery of the pressure wave plate and the side wall of the moon pool, the wave reduction ring is arranged on the end portion of the lower end of the moon pool, the inner side caliber of the upper end of the wave reduction ring is the same as the caliber of the lower end of the moon pool, the inner diameter of the wave reduction ring increases in an arc shape from top to bottom, the flow guide structure comprises a bottom plate arranged on the lower end of the wave reduction ring, a wave reduction hole is formed in the bottom plate, the hole periphery of the wave reduction hole is fixedly connected with a ring opening in the lower end of the wave reduction ring, and the bottom plate is connected with the bottom of a ship body through a rib plate.
In the ship navigation process, water flow enters the ship bottom through the smooth cambered surface in the wave-reducing ring, so that the fluctuation of the water flow entering the ship bottom can be effectively reduced, the measurement precision of a multi-beam instrument is improved, and the gap between the wave-pressing plate and the moon pool is convenient for high-pressure water or bubbles to flow upwards from the ship bottom along the moon pool; the flow guide structure formed by the bottom plate and the rib plate can effectively avoid the towed body vortex and obviously reduce the resistance of the flow guide device.
As a preferable technical means: the wave-reducing ring is a thick plate with equal wall thickness, the inner side of the upper end of the wave-reducing ring is smoothly connected and transited with the lower end of the moon pool, and the upper end of the wave-reducing ring extends upwards and is connected with the bottom of the ship. Smooth connection transition can effectively reduce the rivers change, and the upper end of falling ripples ring upwards extends and links to each other with the hull bottom can effectively strengthen the structural strength who connects.
As a preferable technical means: the wave pressing plate is detachably connected with the moon pool through a connecting piece. The pressure wave plate is fixedly connected, and the pressure wave plate is convenient to detach when the ship sails at a low speed.
As a preferable technical means: the area S1 of the wave pressing plate and the diameter D of the moon pool meet pi D 2 /5≤S1<πD 2 /4, thickness H of the pressure wave plate>D/100. The size of the wave pressing plate can effectively ensure that the wave pressing plate is suitable for a gap of upwelling of high-pressure water or bubbles, the wave pressing plate keeps a certain thickness, and the longitudinal stability of the wave pressing plate is effectively ensured.
As a preferable technical means: the tangential inclination angle of the wave-reducing ring is not less than 3 ︒ and not more than 15 ︒, and the distance L between the upper end and the lower end of the wave-reducing ring is D/100-L-woven fabric D/50. The tangential inclination angle and the height of the wave-reducing ring in the range can effectively reduce the fluctuation of water flow entering the bottom of the ship.
As a preferable technical means: the side of the bottom plate close to the stern is provided with an arc annular plate with the outer diameter R, R is more than or equal to D/2 and less than or equal to D, one side close to the bow is provided with two acute angle plates which are tangent to the arc annular plate and intersect to form an angle beta, the angle beta is more than or equal to 30 ︒ and less than or equal to 60 ︒, and the arc annular plate and the acute angle plates are the same plate. The sailing resistance can be effectively reduced.
As a preferable technical means: the ribbed plates comprise a front ribbed plate and a rear ribbed plate, the front ribbed plate and the rear ribbed plate are arranged on a symmetrical middle line of the ship body in a straight line, the front ribbed plate is positioned on one side of the bow of the wave-reducing ring, and the rear ribbed plate is positioned on one side of the stern of the wave-reducing ring. The sailing resistance can be better reduced, and the towed body vortex is avoided.
As a preferable technical means: the end part of the front rib plate, which is positioned at one end of the bow, is aligned with the head end of the acute angle plate ship, and the end part of the rear rib plate, which is positioned at one end of the stern, is aligned with the stern end of the circular arc annular plate. The rib plate is completely positioned on the bottom plate, so that turbulence generated at the end part of the rib plate can be better reduced.
As a preferable technical means: the front ribbed plate is welded with the bottom plate, the bottom of the ship body and the wave-reducing ring, the rear ribbed plate is welded with the bottom plate, the bottom of the ship body and the wave-reducing ring, the bottom plate is welded with the lower end of the wave-reducing ring, and the wave-reducing ring is welded with the lower end of the moon pool and the bottom of the ship body. Through welded connection mode, not only firm in connection, and can effectively avoid the joint gap, through the back processing of polishing, the connection surface is smooth, can effectively promote the effect of falling class drag reduction.
Has the beneficial effects that: the fluctuation of water flow entering the ship bottom can be effectively reduced, the measurement accuracy of a multi-beam instrument and the gap between the wave pressing plate and the moon pool are improved, and high-pressure water or bubbles can conveniently flow upwards from the ship bottom along the moon pool; the flow guide structure formed by the bottom plate and the rib plate can effectively avoid the body dragging vortex, and the resistance of the flow guide device is obviously reduced.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is another view-direction structure diagram of the present invention.
Fig. 3 is a schematic view of another viewing direction structure of the present invention.
In the figure: 1-a wave plate; 2-a down-wave ring; 3-a moon pool; 4-a bottom plate; 5, a ship body; 6-a stud; 7-rear rib plate; 8-front rib plate; 401-circular arc ring plate; 402-acute corner plate.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1-3, a multi-beam flow guiding device for a moon pool structure scientific investigation ship comprises a wave pressing plate 1, a wave reducing ring 2 and a flow guiding structure arranged on the periphery of the wave reducing ring 2, wherein the wave pressing plate 1 is arranged on the lower portion of a moon pool 3, a gap is arranged between the periphery of the wave pressing plate 1 and the side wall of the moon pool 3, the wave reducing ring 2 is arranged on the end portion of the lower end of the moon pool 3, the inner side caliber of the upper end of the wave reducing ring 2 is the same as the caliber of the lower end of the moon pool 3, the inner diameter of the wave reducing ring 2 from top to bottom is increased in an arc shape, the flow guiding structure comprises a bottom plate 4 arranged on the lower end of the wave reducing ring 2, a wave reducing hole is arranged on the bottom plate 4, the hole periphery of the wave reducing hole is fixedly connected with a ring opening on the lower end of the wave reducing ring 2, and the bottom plate 4 is connected with the bottom of a ship body 5 through a rib plate.
In order to reduce the water flow change, the wave-reducing ring 2 is an equal-wall thick plate, the inner side of the upper end of the wave-reducing ring 2 is smoothly connected and transited with the lower end of the moon pool 3, and the upper end of the wave-reducing ring 2 extends upwards and is connected with the bottom of the ship. Smooth connection transition can effectively reduce the rivers change, and the upper end of falling ripples ring 2 upwards extends and links to each other with the hull bottom can effectively strengthen the structural strength who connects.
In order to facilitate the removal of the wave pressing plate 1, the wave pressing plate 1 is detachably connected with the moon pool 3 through a connecting piece. Realize the connection of pressure wave board 1 and fix, and convenient pressure wave board 1's dismantlement when boats and ships low-speed navigation.
In order to ensure the gap suitable for upwelling of high-pressure water or bubbles, pi D is satisfied between the area S1 of the pressure wave plate 1 and the diameter D of the moon pool 3 2 /5≤S1<πD 2 /4, thickness H of the platen 1>D/100. The size of the wave pressing plate 1 can effectively ensure that the wave pressing plate is suitable for gaps formed by upwelling of high-pressure water bodies or bubbles, the wave pressing plate 1 keeps certain thickness, and the longitudinal stability of the wave pressing plate 1 is effectively ensured.
In order to reduce the fluctuation of water flow entering the bottom of the ship, the tangential inclination angle of the wave-lowering ring 2 is 3 ︒ -alpha 15 ︒, and the distance L between the upper end and the lower end of the wave-lowering ring 2 is D/100-L-woven fabric (D/50). The tangential inclination angle and the height of the wave-reducing ring 2 in the range can effectively reduce the fluctuation of water flow entering the bottom of the ship.
In order to reduce navigation resistance, one side of the bottom plate 4 close to the stern is an arc annular plate 401 with the outer diameter R, D/2 is more than or equal to R and less than or equal to D, one side close to the bow is an acute angle plate 402 which is tangent to the arc annular plate 401 and forms an angle beta with the straight line, 30 ︒ is more than or equal to beta and less than or equal to 60 ︒, and the arc annular plate 401 and the acute angle plate 402 are the same plate. The sailing resistance can be effectively reduced.
In order to better reduce the navigation resistance, the rib plates comprise a front rib plate 8 and a rear rib plate 7, the front rib plate 8 and the rear rib plate 7 are arranged on a symmetrical middle line of the ship body 5 in a straight line, wherein the front rib plate 8 is positioned on the bow side of the wave-reducing ring 2, and the rear rib plate 7 is positioned on the stern side of the wave-reducing ring 2. The sailing resistance can be better reduced, and the towed body vortex is avoided.
In order to reduce turbulence generated at the end of the rib plate, the end of the front rib plate 8 at the bow end is aligned with the bow end of the acute angle plate 402, and the end of the rear rib plate 7 at the stern end is aligned with the stern end of the circular arc plate 401. The ribs are located completely above the floor 4, which better reduces turbulence at the ends of the ribs.
In order to improve the effect of flow reduction and drag reduction, the front rib plate 8 is welded with the bottom plate 4, the bottom of the ship body 5 and the wave reduction ring 2, the rear rib plate 7 is welded with the bottom plate 4, the bottom of the ship body 5 and the wave reduction ring 2, the bottom plate 4 is welded with the lower end of the wave reduction ring 2, and the wave reduction ring 2 is welded with the lower end of the moon pool 3 and the bottom of the ship body 5. Through welded connection mode, not only firm in connection, and can effectively avoid the joint gap, through the back processing of polishing, the connecting surface is smooth, can effectively promote the precipitation drag reduction effect.
In the navigation process of the ship, water flow enters the ship bottom through the smooth cambered surface in the wave-reducing ring 2, so that the fluctuation of the water flow entering the ship bottom can be effectively reduced, the measurement precision of a multi-beam instrument is improved, and a gap between the wave-pressing plate 1 and the moon pool 3 is formed, so that high-pressure water or bubbles can conveniently flow upwards from the ship bottom along the moon pool 3; the flow guide structure formed by the bottom plate 4 and the rib plate can effectively avoid the body dragging vortex, and the resistance of the flow guide device is obviously reduced.
The multi-beam deflector device for a moon pool structure scientific investigation ship shown in fig. 1-3 is a specific embodiment of the present invention, has shown the outstanding substantive features and significant progress of the present invention, and can be modified equivalently in shape, structure and the like according to the practical use requirements and under the teaching of the present invention, and is within the protection scope of the present solution.

Claims (8)

1. The utility model provides a multi-beam guiding device that is used for moon pool structure scientific investigation ship which characterized in that: the ship comprises a pressure wave plate (1), a pressure wave ring (2) and a flow guide structure arranged on the periphery of the pressure wave ring (2), wherein the pressure wave plate (1) is arranged on the lower part of a moon pool (3), a gap is formed between the periphery of the pressure wave plate (1) and the side wall of the moon pool (3), the pressure wave ring (2) is arranged on the end part of the lower end of the moon pool (3), the caliber of the inner side of the upper end of the pressure wave ring (2) is the same as that of the lower end of the moon pool (3), the inner diameter of the pressure wave ring (2) increases in an arc shape from top to bottom, the flow guide structure comprises a bottom plate (4) arranged on the lower end of the pressure wave ring (2), a pressure wave hole is formed in the bottom plate (4), the hole periphery of the pressure wave hole is fixedly connected with a ring opening at the lower end of the pressure wave ring (2), and the bottom of the bottom plate (4) is connected with a ship body (5) through a rib plate;
the area S1 of the wave pressing plate (1) and the diameter D of the moon pool (3) meet pi D 2 /5≤S1<πD 2 /4, thickness H of the wave plate (1)>D/100。
2. The multi-beam deflector for a moon pool structure scientific investigation vessel of claim 1, wherein: the wave-reducing ring (2) is an equal-wall thick plate, the inner side of the upper end of the wave-reducing ring (2) is smoothly connected and transited with the lower end of the moon pool (3), and the upper end of the wave-reducing ring (2) extends upwards and is connected with the bottom of the ship.
3. The multi-beam deflector for a moon pool structure scientific investigation vessel of claim 2, wherein: the wave pressing plate (1) is detachably connected with the moon pool (3) through a connecting piece.
4. The multi-beam deflector for a moon pool structure scientific investigation vessel of claim 1, wherein: the tangential dip angle of the wave-reducing ring (2) is not less than 3 ︒ and not more than 15 ︒, and the distance L between the upper end and the lower end of the wave-reducing ring (2) is D/100-L-straw-type D/50.
5. The multi-beam deflector for moon pool structure scientific investigation vessel of claim 4, wherein: the side, close to the stern, of the bottom plate (4) is provided with an arc annular plate (401) with the outer diameter R, R is larger than or equal to D/2 and smaller than or equal to D, one side, close to the bow, of the bottom plate is provided with two acute angle plates (402) which are tangent to the arc annular plate (401) and intersect to form an angle beta, beta is larger than or equal to 30 ︒ and smaller than or equal to 60 ︒, and the arc annular plate (401) and the acute angle plates (402) are made of the same plate material.
6. The multi-beam deflector for a moon pool structure scientific investigation vessel of claim 5, wherein: the rib plate comprises a front rib plate (8) and a rear rib plate (7), the front rib plate (8) and the rear rib plate (7) are arranged on a symmetrical center line of the ship body (5) in a straight line, the front rib plate (8) is located on the bow side of the wave-reducing ring (2), and the rear rib plate (7) is located on the stern side of the wave-reducing ring (2).
7. The multi-beam deflector for a moon pool structure scientific investigation vessel of claim 6, wherein: the end part of the front rib plate (8) positioned at one end of the bow is aligned with the bow end of the acute angle plate (402), and the end part of the rear rib plate (7) positioned at one end of the stern is aligned with the stern end of the circular arc ring plate (401).
8. The multi-beam deflector for a moon pool structure scientific investigation vessel of claim 7, wherein: preceding floor (8) and bottom plate (4), hull (5) bottom, all welded connection between falling ripples ring (2), back floor (7) and bottom plate (4), hull (5) bottom, all welded connection between falling ripples ring (2), bottom plate (4) and fall ripples ring (2) lower extreme welded connection, falling ripples ring (2) and moon pool (3) lower extreme and hull (5) bottom all welded connection.
CN202011282577.8A 2020-11-13 2020-11-13 Multi-beam flow guide device for moon pool structure scientific investigation ship Active CN112432632B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001158394A (en) * 1999-12-02 2001-06-12 Mitsubishi Heavy Ind Ltd Propulsion resistance reducing device of ship with moon pool
US7467913B1 (en) * 1996-11-15 2008-12-23 Shell Oil Company Faired truss spar
CN101797952A (en) * 2010-04-27 2010-08-11 刘春� Ship plank
CN104743076A (en) * 2015-04-08 2015-07-01 江苏科技大学 Device for reducing liquid oscillation in moon pool of oceanographic engineering structure
CN204659985U (en) * 2015-04-08 2015-09-23 江苏科技大学 Reduce the device of the initial air gap of semi-submerged platform
CN107787287A (en) * 2015-05-04 2018-03-09 格斯特Msc资源公司 It is provided with the ship of moon pool
CN108749998A (en) * 2018-05-23 2018-11-06 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） Diving moon pool and ship

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7467913B1 (en) * 1996-11-15 2008-12-23 Shell Oil Company Faired truss spar
JP2001158394A (en) * 1999-12-02 2001-06-12 Mitsubishi Heavy Ind Ltd Propulsion resistance reducing device of ship with moon pool
CN101797952A (en) * 2010-04-27 2010-08-11 刘春� Ship plank
CN104743076A (en) * 2015-04-08 2015-07-01 江苏科技大学 Device for reducing liquid oscillation in moon pool of oceanographic engineering structure
CN204659985U (en) * 2015-04-08 2015-09-23 江苏科技大学 Reduce the device of the initial air gap of semi-submerged platform
CN107787287A (en) * 2015-05-04 2018-03-09 格斯特Msc资源公司 It is provided with the ship of moon pool
CN108749998A (en) * 2018-05-23 2018-11-06 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） Diving moon pool and ship

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