CN218907527U

CN218907527U - Bottom external-detection type streamline defoaming appendage

Info

Publication number: CN218907527U
Application number: CN202221733346.9U
Authority: CN
Inventors: 张倩; 刘国磊; 胡颖楠; 葛海超; 梅荣兵; 阮航; 张丽波; 潘友鹏; 胡淼; 王国旺; 丛海东; 余卓蓉
Original assignee: Dalian Shipbuilding Industry Co Ltd
Current assignee: Dalian Shipbuilding Industry Co Ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-04-25
Anticipated expiration: 2032-07-07

Abstract

The utility model provides a ship bottom external detection formula streamlined defoaming appendage, hull bottom plate surface is provided with the defoaming appendage that protrudes downwards, and the defoaming appendage is a cavity, and the defoaming appendage is the cavity that the middle part is rectangle, both ends tip have circular arc, and the height B of the defoaming appendage is greater than the height of the intensive district of hull bottom air layer. The depth finder is positioned in the defoaming attachment body, the bottom of the depth finder and the bottom plate of the defoaming attachment body are positioned on the same horizontal plane, and the width of the two end parts of the defoaming attachment body gradually increases from the end parts to the middle part and is connected with the middle part in a streamline manner into a whole. The utility model is suitable for civil ships and military ships, can greatly reduce the influence range of bubbles on the bottom sensor, improves the accuracy of the sensor, has reasonable structural layout and uniform load distribution, has simple construction process, has the advantages of saving cost and high strength, reduces the potential safety hazard of ship navigation and improves the safety of shipping.

Description

Bottom external-detection type streamline defoaming appendage

Technical Field

The utility model belongs to the field of ship design and construction, and relates to a bottom external-probing streamline defoaming appendage.

Background

In the navigation process of the ship, the echo sounding device for the ship can measure the water depth when the ship is sailed in an unknown sea area or a shallow water navigation area so as to ensure the safety of the ship sailing.

The conventional depth finder sensor is welded on the outer plate surface of the bottom of the cabin, and the bubbles usually move along the flow direction of the fluid, so that the concentration of the bubbles on the surface of the bottom of the ship is too high, and the depth finder sensor installed on the bottom of the ship cannot work normally, thereby generating potential safety hazards.

Therefore, if an accessory can be developed to change the flow of fluid at the bottom of the ship or extend out of the gas layer, the concentration of bubbles in the area near the sensor can be reduced to a certain extent, so that the problem that the sensor cannot work normally is solved.

Disclosure of Invention

In order to solve the problems, the utility model provides a bottom external detection type streamline defoaming attachment, which aims to achieve the purpose that a depth finder is not influenced by bottom bubbles and can accurately measure the water depth when a ship sails at shallow draft, and adopts the following technical scheme:

the utility model provides a ship bottom external detection formula streamlined defoaming appendage, hull bottom plate surface is provided with the defoaming appendage that protrudes downwards, the defoaming appendage is a cavity, the height B of defoaming appendage is greater than the height of the intensive district of hull bottom air layer. The defoaming appendage is positioned at the bottom of the ship body and protrudes downwards from the bottom plate of the ship body, and at the moment, the bottom plate of the ship body is the top cavity wall of the defoaming appendage. The height of the defoaming attachment can be determined according to the dense conditions of the bottom air layers of different ship types, and the height of the defoaming attachment needs to be higher than the dense areas of the bottom air layers of the ship body so as to ensure that the dense areas of the bottom air layers of the ship body cannot influence the defoaming attachment, namely, the work of the depth finder in the defoaming attachment cannot be influenced.

Above-mentioned bottom of a ship external probe streamlined defoaming appendage, further, the depth finder is located in the defoaming appendage, the depth finder bottom with the defoaming appendage bottom plate is located same horizontal plane. The bottom of the depth finder and the bottom of the defoaming appendage are positioned on the same horizontal plane, and the bottom of the depth finder and the bottom of the defoaming appendage are welded to form a watertight structure.

Above-mentioned a bilge is outer to visit streamlined defoaming attached body, still further, the defoaming attached body is that the middle part is rectangle, both ends tip has the cavity of circular arc, the circular arc radius of defoaming attached body both ends tip is R1, R2 respectively, the length of defoaming attached body both ends tip is A1, A2 respectively, the length in defoaming attached body middle part is A3, 300mm < R1< R2<500mm,0< A1=A2 < A3. The width of the end parts of the two ends of the defoaming attachment body gradually widens from the end parts to the middle part, and the end parts and the middle part of the defoaming attachment body are in streamline connection into a whole. The radius of the circular arcs at the two end parts can be equal or different, and the preferred size range of the radius of the circular arcs at the two end parts is 300mm < R1< R2<500mm for the optimal structure.

Above-mentioned hull bottom external detection formula streamlined defoaming attaches, still further, defoaming attaches middle part length direction's both sides chamber wall and hull vertical longitudinal corresponding, defoaming attaches middle part width direction's both sides chamber wall and hull bottom strong frame are corresponding, defoaming attaches width is the integer multiple of two adjacent hull vertical longitudinal interval, defoaming attaches middle part length is the integer multiple of two adjacent hull bottom strong frame interval. Each cavity wall of the defoaming attachment is positioned at a strong frame or a vertical longitudinal bone of the ship body so as to ensure the structural strength of the defoaming attachment, and the width of the middle part of the defoaming attachment is the width of the defoaming attachment.

According to the bilge external detection type streamline defoaming attachment, further, the diameter of the depth finder is R5, and the width of the defoaming attachment is S1, 100mm < R5<0.3S1.

According to the bilge external detection type streamline defoaming attachment, further, the width of the two end parts of the defoaming attachment gradually becomes larger from the end parts to the middle part, and the defoaming attachment and the middle part are in streamline connection into a whole.

Above-mentioned bottom of a ship outer probe streamlined defoaming appendage, still further, the depth finder bottom with defoaming appendage bottom plate welding.

According to the bottom external-probing streamline defoaming attachment, the isolation empty cabin is further arranged on the inner side of the hull bottom plate and above the defoaming attachment. The isolation air cabin adopts a watertight structure and is positioned right above the defoaming attachment, so that seawater is prevented from penetrating into the ship body after the defoaming attachment is damaged, and the cabin breaking stability of the isolation air cabin is ensured.

Above-mentioned a ship bottom is outer to visit streamlined defoaming attached body, and still further, the isolation empty room is rectangle, isolation empty room length with the length in the middle part of the defoaming attached body is the same, isolation empty room width is 2 times of defoaming attached body width, isolation empty room's height C,500mm < C <1500mm.

Above-mentioned a ship bottom outer survey formula streamlined defoaming appendage, further, be provided with the reinforcing toggle plate between adjacent hull vertical longitudinal bone above the defoaming appendage, the reinforcing toggle plate is connected through the circular arc board with hull vertical longitudinal bone top, and the reinforcing toggle plate has 15 oblique angles.

The utility model adopts the defoaming attachment protruding from the ship bottom to be arranged on the ship bottom, and the depth finder is arranged in the defoaming attachment, so that the influence of ship bottom bubbles on a ship bottom sensor can be effectively reduced, the resistance performance evaluation and the flow state analysis of a flow field close to the ship body are carried out on the design scheme by adopting a Computational Fluid Dynamics (CFD) method, and the design scheme of the defoaming attachment with optimal comprehensive performance is determined by setting the limiting condition of an optimization algorithm. The final generation scheme has the lowest resistance, the optimal improvement effect of the streamline of the ship body on bubbles, attractive defoaming attachment and convenient construction. The strength requirement is met by finite element analysis. The optimized model selection method is suitable for civil ships and military ships, can greatly reduce the range of the bottom sensor affected by bubbles, improves the precision of the sensor, and improves the shipping safety.

Drawings

FIG. 1 is a diagram of a prior art depth finder installation position;

FIG. 2 is a diagram of the installation position of the depth finder of the present utility model;

FIG. 3 is a schematic view of the defoaming attachment with a depth finder of the present utility model;

FIG. 4 is a schematic top view of the hull bottom plate;

FIG. 5 is a block diagram of a reinforced toggle plate of the present utility model;

wherein: 1-ship bottom outer plate, 2-defoaming appendage, 3-depth finder, 4-ship vertical longitudinal frame, 5-isolation empty cabin, 6-reinforced toggle plate, 7-ship bottom air layer dense area, 8-ship bottom strong frame and 9-circular arc plate.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

As shown in fig. 3, a bottom external-detection streamline defoaming attachment is provided on the outer surface of a hull bottom plate, the defoaming attachment is a cavity with a rectangular middle part and circular arcs at two end parts, the length a3=1800 mm of the rectangular middle part and the width s1=830 mm (a vertical longitudinal bone spacing of an adjacent hull), the width of the two end parts of the defoaming attachment gradually widens from the end parts to the middle part, the defoaming attachment is integrally connected with the middle part in a streamline manner, and the height B of the defoaming attachment is larger than the height of a dense area of a hull air layer. The length of each end of the defoaming attachment is a1=a2=900 mm, and the radius is r1=r2=300 mm. Defoaming attachment height b=600 mm.

The depth finder is positioned in the defoaming attachment body, the bottom of the depth finder and the defoaming attachment body bottom plate are positioned on the same horizontal plane (as shown in fig. 2), and the bottom of the depth finder and the defoaming attachment body bottom plate are welded to form a watertight structure. The cavity walls of the defoaming attachment correspond to the vertical longitudinal bones and the bottom strong frames of the ship body respectively, the middle width S1 of the defoaming attachment is the same as the distance between the vertical longitudinal bones of two adjacent ship bodies, the middle length A3 of the defoaming attachment is the same as the distance between the two adjacent bottom strong frames, and the lengths of the two end parts of the defoaming attachment are A1 and A2 respectively. An isolation air cabin is arranged above the defoaming appendage, the width of the isolation air cabin is equal to 2 x S1, namely the width of the isolation air cabin is 1660mm, and the length is equal to A3, namely the length of the isolation air cabin is 1800mm. And a reinforcing toggle plate is arranged between the vertical longitudinal bones of two adjacent hulls above the defoaming appendage, the reinforcing toggle plate is in transitional connection with the top ends of the vertical longitudinal bones of the hulls through an arc plate, and the reinforcing toggle plate has 15-degree skew.

Claims

1. A ship bottom external detection type streamline defoaming attachment is characterized in that: the outer surface of the bottom plate of the ship body is provided with a defoaming attachment protruding downwards, the defoaming attachment is a cavity, and the height B of the defoaming attachment is larger than the height of a gas layer dense area at the bottom of the ship body;

the depth finder is positioned in the defoaming attachment body, and the bottom of the depth finder and the bottom plate of the defoaming attachment body are positioned on the same horizontal plane.

2. The bilge external probe type streamline defoaming attachment according to claim 1, wherein: the defoaming attachment is a cavity with a rectangular middle part and circular arcs at two end parts, the lengths of the two end parts of the defoaming attachment are A1 and A2 respectively, and the length of the middle part of the defoaming attachment is A3,0< A1=A2 < A3.

3. The bilge external probe type streamline defoaming attachment according to claim 2, wherein: the two side cavity walls of the middle part length direction of the defoaming attachment correspond to the vertical longitudinal bones of the ship body, the two side cavity walls of the middle part width direction of the defoaming attachment correspond to the strong ship bottom frames, the width of the defoaming attachment is an integral multiple of the distance between the vertical longitudinal bones of the adjacent ship body, and the middle part length of the defoaming attachment is an integral multiple of the distance between the strong ship bottom frames.

4. The bilge external probe type streamline defoaming attachment according to claim 1, wherein: the diameter of the depth finder is R5, and the width of the defoaming appendage is S1, 100mm < R5<0.3S1.

5. The bilge external probe type streamline defoaming attachment according to claim 1, wherein: the width of the two end parts of the defoaming attachment body gradually increases from the end part to the middle part, and the defoaming attachment body and the middle part are connected into a whole in a streamline manner.

6. A bilge external probe type streamline defoaming attachment according to claim 1 or 4, characterized in that: and the bottom of the depth finder is welded with the defoaming appendage bottom plate.

7. The bilge external probe type streamline defoaming attachment according to claim 1, wherein: an isolation empty cabin is arranged on the inner side of the hull bottom plate and above the defoaming attachment.

8. The bilge external probe type streamline defoaming attachment according to claim 7, wherein: the isolation empty cabin is rectangular, the length of the isolation empty cabin is the same as that of the middle part of the defoaming appendage, the width of the isolation empty cabin is 2 times that of the defoaming appendage, and the height C of the isolation empty cabin is 500mm < C <1500mm.

9. A bilge external probe type streamline defoaming attachment according to claim 3, characterized in that: and a reinforcing toggle plate is arranged between the vertical longitudinal bones of the adjacent ship bodies above the defoaming attachment body, the reinforcing toggle plate is connected with the top ends of the vertical longitudinal bones of the ship bodies through arc plates, and the reinforcing toggle plate is provided with 15-degree skew.