WO2021238357A1

WO2021238357A1 - Foldable enclosing device for ship air layer drag reduction system, and air layer drag reduction ship

Info

Publication number: WO2021238357A1
Application number: PCT/CN2021/081525
Authority: WO
Inventors: 陈雷强; 吴赞; 高丽瑾; 朱玉柱; 陈少峰; 恽秋琴
Original assignee: 中船重工（上海）节能技术发展有限公司
Priority date: 2020-05-28
Filing date: 2021-03-18
Publication date: 2021-12-02
Also published as: CN111516797A

Abstract

A foldable enclosing device for a ship air layer drag reduction system. The foldable enclosing device is mounted on a flat ship bottom (2) of an air layer drag reduction ship, a ship bilge compartment being provided above the flat ship bottom (2), and comprises multiple air pocket coamings and multiple driving structures. The air pocket coamings are rotatably connected to the lower surface of the flat ship bottom (2), and after rotationally unfolded, the air pocket coamings work in conjunction to define an air pocket for accommodating an air layer of the air layer drag reduction ship. The air pocket coamings are each provided with one or more driving structures; each driving structure comprises a drive member and a transmission member; the drive member is disposed in the ship bilge compartment; the transmission member has one end connected to the drive member and the other end passing through the flat ship bottom (2) to be connected to the air pocket coaming; a sealing structure is provided between the transmission member and the flat ship bottom (2); the drive members drive, by means of the transmission members, the air pocket coamings to rotate with respect to the flat ship bottom (2), so as to implement the unfolding or folding of the air pocket coamings.

Description

Foldable containment device for ship gas layer drag reduction system and gas layer drag reduction ship

This application claims the priority of Chinese patent application 202010467235.7 whose filing date is May 28, 2020. This application quotes the full text of the aforementioned Chinese patent application.

Technical field

The present disclosure belongs to the technical field of a gas layer drag reduction system at the bottom of a ship, and in particular relates to a foldable containment device used for the gas layer drag reduction system of a ship and a gas layer drag reduction ship.

Background technique

Ship air layer drag reduction is a technology that reduces the frictional resistance of the sailing hull by forming an air layer covering the bottom of the ship by jetting air to the bottom of the ship to reduce the wet surface area of the hull. Longitudinal coaming is more acceptable due to the small changes to the hull, but it has an impact on the ship's draft (when navigating in shallow water channels), and the additional resistance of the hull after the longitudinal coaming is installed on the bottom of the ship will increase when the ship is not jetted.

In the prior art, the containment device of the ship's air layer drag reduction system generally adopts the form of up and down telescoping, and the entire longitudinal baffle and partition are retracted into the hull. The installation of this device will greatly transform the bottom of the ship and cannot be adjusted. The height between the bow coaming and stern coaming and the flat bottom of the ship.

Summary of the invention

The purpose of the present disclosure is to provide a foldable containment device and a gas layer drag reduction ship used in a ship's gas layer drag reduction system, so as to solve the problem that the containment device in the gas layer drag reduction system of the prior art has a relatively large modification to the bottom of the ship during installation. Big problem.

The technical solution of the present disclosure is:

A collapsible containment device for a ship's air layer drag reduction system, which is installed on the flat bottom of an air layer drag reduction ship, above the flat bottom of the ship is a bottom tank, and includes:

A plurality of air pockets, each of the air pockets is rotatably connected to the lower surface of the ship's flat bottom, and after each of the air pockets is rotated and unfolded, they are matched to form an enclosure for accommodating the air layer drag reduction ship Air pockets in the air layer;

A plurality of driving structures, each of the air pocket panels is respectively equipped with one or more of the driving structures, the driving structure includes a driving part and a transmission part, the driving part is arranged in the bottom cabin, the One end of the transmission part is connected to the driving part, and the other end passes through the ship flat bottom and is connected to the air pocket coaming, and a sealing structure is provided between the transmission part and the ship flat bottom; the driving part passes through the The transmission member drives the air pocket panel to rotate relative to the flat bottom of the ship, so as to realize the unfolding or folding of the air pocket panel.

Preferably, in the foldable enclosure device for a ship's air layer drag reduction system provided by the present disclosure, the transmission member is an arc-shaped transmission member, and a plurality of arc-shaped transmission members are provided on the flat bottom of the ship. One end of the arc-shaped transmission member is connected to the drive member, and the other end passes through the first through hole to be connected to the air pocket enclosure. The arc-shaped transmission member and the first The sealing structure is arranged between the through holes;

The arc-shaped transmission member slides up and down in the first through hole to drive the air pocket coaming plate to rotate with respect to the ship flat bottom.

Preferably, in the foldable containment device for the air layer drag reduction system of a ship provided by the present disclosure, the arc-shaped transmission member is an arc-shaped strut.

Preferably, in the foldable containment device for a ship's air layer drag reduction system provided by the present disclosure, the sealing structure is a watertight box connected to the upper surface of the ship's flat bottom in a watertight manner, and a second passage is provided on the watertight box. The arc-shaped transmission member penetrates the second through hole and is connected to the second through hole in a watertight sliding manner.

Preferably, in the foldable enclosure device for a ship's air layer drag reduction system provided by the present disclosure, the driving member is a hydraulic device, the fixed end of the hydraulic device is connected to the upper surface of the ship flat bottom, and the The output end of the hydraulic equipment is connected with the arc-shaped transmission member, and drives the arc-shaped transmission member to slide up and down in the first through hole.

Preferably, in the foldable enclosure device for a ship's air layer drag reduction system provided by the present disclosure, the hydraulic equipment is a hydraulic rod, the hydraulic rod is arranged in the bottom tank, and the output end of the hydraulic rod is connected to The arc-shaped transmission member is connected.

Preferably, the foldable enclosure device for the air layer drag reduction system of a ship provided by the present disclosure, the air pocket enclosure includes:

Two side coamings are respectively arranged on the port and starboard parts of the flat bottom of the ship along the length of the ship;

The bow coaming is arranged on the bow part of the flat bottom of the ship along the width of the ship;

The stern coaming is arranged on the stern part of the flat bottom of the ship along the width of the ship;

The two side coamings, the bow coaming and the stern coaming are all rotatably connected with the lower surface of the ship's flat bottom, and after rotating and unfolding, they cooperate with each other to form the air-layer drag reduction ship Air pockets in the air layer;

The two side coamings, the bow coaming and the stern coaming are respectively equipped with one or more driving structures for driving them to rotate.

Preferably, in the foldable containment device for the ship's air layer drag reduction system provided by the present disclosure, the bow coaming and the stern coaming both have a first side connected to the ship flat bottom and a contact point. The second side opposite to the first side;

A bow flexible member is provided on the stern side of the bow coaming, and the bow flexible member is connected to the flat bottom of the ship and the second side of the bow coaming respectively. The bow flexible member, The bow coaming and the flat bottom of the ship cooperate to form a first triangular structure;

A stern flexible member is provided on the stern side of the stern coaming, and the stern flexible member is connected to the ship flat bottom and the second side of the stern coaming respectively, and the stern flexible member, The stern coaming and the flat bottom of the ship cooperate to form a second triangular structure.

Preferably, in the foldable containment device for the air layer drag reduction system of a ship provided by the present disclosure, the air pocket panel is hingedly connected to the ship flat bottom.

Preferably, in the foldable containment device for a ship's air layer drag reduction system provided by the present disclosure, a solid sealing strip is provided on the rotating outer side of the connection between the ship side coaming and the ship flat bottom.

Preferably, the vertical distance between the lowermost end of the side coaming of the ship and the flat bottom of the ship when unfolded is 100 mm to 800 mm. between.

Preferably, in the foldable enclosure device for the air layer drag reduction system of a ship provided by the present disclosure, each of the air pocket enclosures respectively includes a plurality of enclosure panels arranged end to end in a line, and the enclosure panels The sub-boards are respectively rotatably connected with the lower surface of the flat bottom of the ship; each of the coaming sub-boards is respectively equipped with the driving structure.

Preferably, the foldable containment device for the air layer drag reduction system of a ship provided by the present disclosure further includes a plurality of cavitation partitions, and each of the cavitation partitions is respectively connected to the flat bottom of the ship in the direction of the ship's length. The lower surface, and the cavitation partitions are all located in the cavities; each of the cavitation partitions is respectively equipped with one or more of the driving structures.

An air-layer drag reduction ship provided with the foldable containment device for the ship's air-layer drag reduction system as described in any one of the above

Due to the adoption of the above technical solutions, the present disclosure has the following advantages and positive effects compared with the prior art:

(1) In the foldable containment device for the air layer drag reduction system of the ship provided by the present disclosure, the flat bottom of the ship needs to be cut only in the place where the transmission part passes through, which is compared with all the air traps in the prior art. Where the cave coaming plates are connected, the flat bottom of the ship needs to be cut and processed. The present disclosure makes small modifications to the bottom of the ship, so it solves the problem of large modifications to the bottom of the ship when the baffle device of the gas layer drag reduction system in the prior art is installed. .

(2) In the foldable containment device for the ship's air layer drag reduction system provided by the present disclosure, when the driving member pushes or pulls one end of the arc-shaped strut, the arc-shaped strut slowly passes through the watertight box and passes through the hull, and the other One end pulls or pushes the cavitation coaming and the cavitation partition to rotate on the flat bottom of the ship, and the cavitation coaming and the cavitation partition can be rotated to fit the flat bottom of the ship. Therefore, the air-layer drag reduction ship equipped with the present disclosure can rotate the air-cavity coaming and the air-cavity baffle to fit the flat bottom of the ship when navigating in the shallow water channel, so as to maintain the draft of the original ship and avoid the air-cavity coaming and air-cavity. The clapboard has an angle with the flat bottom of the ship, which increases the draught and affects normal navigation.

(3) The foldable containment device provided by the present disclosure can adjust the bow coaming and the bow coaming in the vertical direction through the driving structure when the air-jet equipment is in the air when the air-jet device is jetting. The distance between the lowest point of the stern coaming and the flat bottom of the ship increases the stability of the bottom air layer of the ship.

(4) In the foldable enclosure device provided by the present disclosure, when the air layer drag reduction system is not working, that is, when the air jet device does not blow air, the cavitation panel and the air cavity partition can be rotated to fit the flat bottom of the ship, reducing the foldable enclosure. The additional resistance caused by the blocking device at the bottom of the ship enhances the drag reduction and energy saving effects.

(5) In the foldable enclosure device provided by the present disclosure, the rotation of the air-cavity enclosure and the air-cavity partition can reduce the adhesion of marine organisms on the air-cavity enclosure and the air-cavity partition.

(6) In the foldable enclosure device provided by the present disclosure, the fixed sealing strip can be arranged to support and fix the air pocket and prevent the leakage of gas in the air pocket when the air pocket enclosure is unfolded.

(7) In the foldable enclosure device provided by the present disclosure, the watertight box is fixed on the upper surface of the flat bottom of the ship, and the second through hole on the watertight box is watertight when connected to the arc-shaped struts in a sliding manner, so that the arc-shaped struts pass through the flat bottom of the ship. When the first through hole is opened on the ship, the water outside the ship cannot enter the ship through the second through hole, that is, the watertight box is an impervious structure, which can prevent the water outside the ship from entering the inside of the hull. At the same time, the first through hole on the flat bottom of the ship and the second through hole on the watertight box uniquely determine the sliding path of the arc support rod, and the first through hole and the second through hole can support and fix the arc support rod.

Description of the drawings

The specific embodiments of the present disclosure will be described in further detail below in conjunction with the accompanying drawings, in which:

Fig. 1 is a schematic top view of a foldable containment device used in a ship's air layer drag reduction system of the present disclosure;

Figure 2 is a schematic side view of the foldable containment device used in the ship's air layer drag reduction system of the present disclosure;

Fig. 3 is a structural schematic diagram of the open state of the ship side coaming of the present disclosure;

Figure 4 is a schematic structural diagram of the disclosed ship side coaming in a folded state;

Fig. 5 is a structural schematic diagram of the open state of the bow coaming of the present disclosure;

Fig. 6 is a schematic structural diagram of the bow panel of the present disclosure in a folded state;

Fig. 7 is a structural schematic diagram of the open state of the stern coaming of the present disclosure;

Fig. 8 is a schematic structural diagram of the stern coaming panel of the present disclosure in a folded state.

Description of reference signs:

1: hull; 2: flat bottom; 3: side coaming; 4: bow coaming; 5: stern coaming; 6: cavitation barrier; 7: bow flexible part; 8: stern flexible part 9: Bow wedge block; 10: Stern wedge block; 11: Fixed sealing strip; 12: Watertight box; 13: Curved strut; 14: Hydraulic equipment; 15: Controller; 16: Control route.

Detailed ways

The foldable containment device and the gas layer drag reduction ship proposed in the present disclosure for the air layer drag reduction system of the ship proposed in the present disclosure will be described in further detail below with reference to the accompanying drawings and specific embodiments. According to the following description and claims, the advantages and features of the present disclosure will be clearer. It should be noted that the drawings all adopt a very simplified form and all use imprecise ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present disclosure.

At the same time, expressions such as "first" and "second" are only used for the purpose of distinguishing multiple configurations, rather than limiting the order of configurations or other features.

In addition, the expression "including" an element is an "open-ended" expression, and the "open-ended" expression only refers to the existence of corresponding components, and should not be interpreted as excluding additional components.

Example 1

Referring to Figures 1 to 8, this embodiment provides a foldable containment device for the gas layer drag reduction system of a ship, which is installed on the flat bottom 2 of the gas layer drag reduction ship, and the bottom tank is above the flat bottom 2 of the ship. The foldable containment device used for the ship's air layer drag reduction system includes a plurality of air pocket panels and a plurality of driving structures. Each cavitation coaming plate is rotatably connected to the lower surface of the ship's flat bottom 2. After each cavitation coaming plate is rotated and unfolded, it cooperates to form an air pocket for accommodating the air layer of the air layer drag reduction ship. Each air pocket panel is equipped with one or more driving structures. The driving structure includes a driving part and a transmission part. The driving part is arranged in the bottom cabin. One end of the transmission part is connected to the driving part, and the other end passes through the ship flat bottom 2 and the air cavity. The coaming is connected, and a sealing structure is provided between the transmission part and the flat bottom 2 of the ship; the driving part drives the air cavity coaming to rotate relative to the flat bottom 2 of the ship through the transmission part to realize the unfolding or folding of the air cavity coaming.

The foldable containment device used in the air layer drag reduction system of a ship provided by the present disclosure only needs to cut the ship flat bottom 2 where there is a transmission member passing through. In the prior art, since the longitudinal baffle and the longitudinal baffle are all moved up and down relative to the bottom of the ship to retract into the hull 1 or extend out of the bottom of the ship, all the places connected to the longitudinal baffle and the longitudinal baffle are required. The ship flat bottom 2 is cut and processed. In terms of intersection, this embodiment has less modification to the ship bottom.

The structure of this embodiment will now be described.

In this embodiment, the cavitation coaming includes two side coamings 3, a bow coaming 4, and a stern coaming 5. Two side coamings 3 are respectively arranged on the port and starboard parts of the flat bottom 2 along the length of the ship. The bow coaming 4 is arranged on the bow of the flat bottom 2 along the width of the ship. The stern coaming 5 is along the width of the ship. The direction is arranged at the stern part of the flat bottom 2 of the ship. Among them, the two side coamings 3 are arranged symmetrically with respect to the midline plane of the gas layer drag reduction vessel. Among them, the two side coamings 3, the bow coaming 4 and the stern coaming 5 are all rotatably connected with the flat bottom 2 of the ship.

During the folding process, the two side coamings 3 are folded toward the midline plane of the air layer drag reduction vessel, and the bow coaming 4 and the stern coaming 5 are both folded toward the stern direction of the ship. In the unfolded state, the two side coamings 3 are perpendicular to the flat bottom 2 of the ship, and the angles between the bow coaming 4 and the stern coaming 5 and the flat bottom 2 in the stern direction of the ship are all acute angles. Of course, in the unfolded state, the angles between the two side coamings 3, the bow coaming 4, the stern coaming 5 and the ship flat bottom 2 can all be adjusted according to the actual situation through the drive structure. After being folded, the two side coamings 3, the bow coaming 4, and the stern coaming 5 can all be rotated to fit the flat bottom 2 of the ship. The above-mentioned folding method of the coamings has the advantages of simplicity and reliability, small changes to the bottom of the ship, etc. Of course, in other embodiments, the folding direction of the side coaming 3, the bow coaming 4 and the stern coaming 5 can also be based on specific conditions. Make adjustments, there are no restrictions here.

During the rotation, the driving device drives the side coaming 3, the bow coaming 4, and the stern coaming 5 to rotate and unfold through the transmission part; after unfolding, the bow ends of the two side coamings 3 and the bow coaming 4 Fit, one end of the stern is fitted to the stern coaming 5 to form an air pocket that is not easy to leak at the joint.

Further, the length of the ship side coaming 3 is designed according to the length of the ship flat bottom 2 so that the air pocket area under the ship flat bottom 2 is as large as possible, and the wet surface area of the relative hull 1 is as small as possible, which reduces the frictional resistance of the hull more. The height of the cavitation coaming is the vertical distance between the bottom end and the flat bottom 2 of the ship in the open state, and is related to factors such as ship width and draught. Generally, the height of the cavitation coaming is 100 mm to 800 mm in the unfolded state. between. Of course, the distance between them may be less than 100 mm or greater than 800 mm under special circumstances according to actual needs. Therefore, under normal circumstances, the length of the side coaming 3 is adjusted according to the length of the flat bottom 2 of the ship, and the height of the side coaming 3 is controlled between 100 mm and 800 mm according to factors such as ship width and draft.

In this embodiment, the cavitation coaming and the flat bottom 2 of the ship are connected in rotation through a hinge. Further, a solid sealing strip is provided on the outer side of the rotation where the side coaming 3 and the flat bottom 2 of the ship are connected. The outer side of the transmission is: the side coaming divides the space under the ship's flat bottom into two sides according to the side coaming. The first side is the angle between the side coaming and the flat bottom of the ship when the side coaming is unfolded. The angle between the side coaming and the flat bottom of the ship becomes smaller during the folding process; the second side is that the angle between the side coaming and the flat bottom of the ship becomes smaller during the unfolding of the side coaming, and the side of the ship is when the side coaming is folded. The angle between the coaming and the flat bottom of the ship becomes larger; the second side is the rotating outer side of the coaming on the side of the ship. The fixed sealing strip 11 is arranged at the junction of the side coaming 3 and the ship flat bottom 2 and is perpendicular to the ship flat bottom 2 (formed in an L shape, as shown in Fig. 4). When the ship side coaming 3 is in the unfolded state, the fixed sealing strip 11 can support and fix the ship side coaming 3 and prevent the leakage of gas in the air pocket.

In this embodiment, each cavitation enclosure can be designed in segments, and each segment is also provided with a driving structure for driving its rotation. That is, the cavitation coaming includes a plurality of sequentially arranged coaming sub-boards, which are respectively rotatably connected with the lower surface of the ship flat bottom 2, and each coffering sub-board is respectively equipped with one or more of the driving structures. Each cavitation panel adopts a segmented design to facilitate manufacturing, installation and use.

In this embodiment, the driving part of the driving structure may be a hydraulic device 14, the transmission part may be an arc-shaped support rod 13, and the sealing structure may be a watertight box 12.

Specifically, the ship flat bottom 2 is provided with a plurality of first through holes corresponding to the arc-shaped support rods 13, and the arc-shaped support rods 13 pass through the corresponding first through holes. The watertight box 12 is correspondingly arranged at the corresponding arc-shaped strut 13 and the first through hole. The watertight box 12 is connected to the upper surface of the ship flat bottom 2 in a watertight manner. The first through hole communicates with the air layer (or water layer) below the ship flat bottom 2 and The internal space of the watertight box 12. The watertight box 12 is provided with a second through hole. One end of the arc-shaped support rod 13 is rotatably connected with the output end of the hydraulic equipment 14, and the other end passes through the second through hole on the watertight box 12 and the corresponding first through hole on the ship flat bottom 2 under the watertight box 12 to extend out of the hull 1. It is fixedly connected with the corresponding cavitation enclosure. The arc-shaped support rod 13 and the second through hole of the watertight box 12 are connected in a watertight sliding manner.

The air-cavity coaming plate is pushed and unfolded by the transmission member, so the transmission member needs to bend rods, plates, etc., because the connection position of the air-cavity coaming plate on the ship flat bottom 2 is fixed, and the position of the first through hole on the ship flat bottom 2 is fixed Therefore, it is necessary that the distance between the transmission part and the connection position of the boat flat bottom 2 and the distance from the first through hole to the connection position of the transmission part and the boat flat bottom 2 are equal. The above-mentioned distance is an arc-shaped transmission member with a radius. In order to make small changes to the flat bottom 2 of the ship during installation in this embodiment, preferably, the arc-shaped transmission member may adopt an arc-shaped support rod 13. In other embodiments, arc-shaped plates and the like can also be used.

The watertight box 12 mainly functions to fix the arc-shaped support rod 13 and ensure the watertightness. The second through hole on the watertight box 12 and the arc-shaped support rod 13 are watertight when they are slidably connected, so that when the arc-shaped support rod 13 passes through the first through hole opened on the flat bottom 2 of the ship, water outside the ship cannot pass through the second through hole Into the ship, that is, the watertight box 12 is an impermeable structure, which can prevent water outside the ship from entering the interior of the hull 1. At the same time, the second through hole on the watertight box 12 and the first through hole on the ship's flat bottom 2 uniquely determine the sliding path of the arc support rod 13, and the first through hole and the second through hole can support and fix the arc support rod. 13.

The hydraulic equipment 14 is arranged in the transfer cabin, and the fixed end is connected with the hull 1. The hydraulic equipment 14 is used to drive the arc-shaped support rod 13 to slide up and down in the first through hole, that is, the arc-shaped support rod 13 slides up and down on the watertight box 12 to drive the rotation of the air-cavity enclosure, thereby realizing the deployment and expansion of the air-cavity enclosure. fold. At the same time, a controller 15 is provided. The controller 15 is electrically connected to the hydraulic equipment 14 through a control circuit, and is used to control the output degree of the hydraulic equipment 14, so as to control the sliding range of the arc strut 13 on the watertight box 12, thereby controlling the air pocket. The rotation angle of the board. Specifically, in this embodiment, the hydraulic equipment 14 may be a hydraulic rod, and the controller 15 is electrically connected to the hydraulic rod through a control line. The fixed end of the hydraulic rod is rotatably connected to the upper surface of the flat bottom 2 of the ship, and the output end is connected to the arc-shaped support rod 13. By controlling the protruding length of the output end of the hydraulic rod, the sliding amplitude of the arc support rod 13 is controlled to control the rotation angle of the air pocket enclosure. In other implementations, other driving components that can realize the sliding of the arc-shaped strut 13 on the watertight box 12 can also be used. Even if the hydraulic equipment 14 is used, other non-hydraulic cylinder options can also be used.

The working principle of the collapsible containment device used in the ship's air layer drag reduction system provided by this embodiment will be further explained below:

Please mainly refer to Figures 3 and 4. During the unfolding process of the side coaming 3, the controller 15 drives the output end of the hydraulic rod to contract through the control route 16, and the arc strut 13 passes through the watertight box 12 through the flat bottom 2 of the ship and enters the bottom of the ship. In the water, push the side coaming 3 and the cavitation partition 6 to slowly open downwards until the fixed sealing strip 11 is attached and fixed to the flat bottom 2 of the ship. At this time, the side coaming 3 and the cavitation partition 6 are both perpendicular to the flat bottom 2 of the ship. , To reach a better unfolding state.

During the folding process of the ship's side coaming 3, the controller 15 drives the output end of the hydraulic rod to extend through the control circuit, and the arc-shaped strut 13 is retracted into the ship flat bottom 2 through the watertight box 12, and the ship's side coaming 3 is pulled upwards gently. Slowly fold until the side coaming 3 of the ship fits with the flat bottom 2 of the ship and reaches the folded state.

Please refer mainly to Figures 5 to 8. During the opening of the bow and

stern panels

4 and 5, the controller 15 drives the output end of the hydraulic lever to contract through the control circuit, pushing the bow panels 4 and the stern panels. 5 Slowly open downwards. By adjusting the extension length of the output end of the hydraulic lever, the bottom of the bow coaming 4 and the stern coaming 5 and the ship flat bottom 2 can be adjusted, that is, the bow coaming 4 and the stern coaming can be adjusted. The vertical distance between the bottom end of the plate 5 and the flat bottom 2 of the ship.

During the folding process of the bow panel 4 and the stern panel 5, the controller 15 drives the output end of the hydraulic lever to extend through the control circuit, and pulls the bow panel 4 and the stern panel 5 to fold upwards slowly until the bow The part coaming 4 and the stern coaming 5 are attached to the flat bottom 2 of the ship.

Among them, the cavitation enclosure reduces the attachment of marine organisms on its own body by rotating.

Example 2

Please refer to FIGS. 2 and 5 to 8. In this embodiment, on the basis of Embodiment 1, a bow wedge block 9 and a stern wedge block 10 are provided.

Both the bow coaming 4 and the stern coaming 5 have a first side connected to the flat bottom 2 of the ship and a second side corresponding to the first side.

A bow flexible member 7 is provided on the stern side of the bow coaming. The bow flexible member 7 is connected to the flat bottom 2 and the second side of the bow coaming 4 respectively. In the unfolded state, the bow flexible member 7, the bow The coaming 4 and the ship’s flat bottom 2 cooperate to form a first triangular structure, and the first triangular area is the bow wedge block 8; the height of the bow wedge block 9 is the lower end of the bow coaming 4 when it is deployed. The distance between the flat bottom 2.

The stern side of the stern coaming is provided with a stern flexible member 8 which is connected to the ship flat bottom 2 and the second side of the stern coaming 5 respectively. In the unfolded state, the stern flexible member 8, the stern coaming 5 and the ship flat bottom 2 Cooperate to form a second triangular structure, the second triangular area is the stern wedge block 10, and the height of the stern wedge block 10 is the distance between the lowermost end of the stern coaming 5 and the flat bottom 2 of the ship in the unfolded state .

Set the bow wedge block 9 and the stern wedge block 10, when the ship sails at different speeds, the height of the bow wedge block 9 and the stern wedge block 10 can be adjusted to reduce the vortex resistance formed behind the bow coaming 4, Enhance the stability of the air layer in the air pocket. Further, if the bow panel 4 and the stern panel 5 are designed in segments, the flexible member is also designed in segments together with the corresponding bow panel 4 or the stern panel 5, that is, the bow wedge block 9 and The stern wedge block 10 is designed in sections.

Specifically, both the bow flexible member 7 and the stern flexible member 8 in this embodiment can use rubber rings. Of course, in other embodiments, the bow flexible member 7 and the stern flexible member 8 can be other flexible members, which are not limited here.

During the unfolding of the bow panel 4 and the stern panel 5, when the bow panel 4 and the stern panel 5 are slowly opened downward, the corresponding bow flexible member 7 and the stern flexible member 8 are also removed from The folded state is opened. By adjusting the extension length of the output end of the hydraulic rod, the height of the bow wedge block 9 and the stern wedge block 10 can be adjusted.

During the folding process of the bow panel 4 and the stern panel 5, when the bow panel 4 and the stern panel 5 are slowly folded upward, the corresponding bow flexible member 7 and the stern flexible member 8 are also pulled from The extended state slowly shrinks and folds until the bow coaming 4 and the stern coaming 5 are fitted to the flat bottom 2 of the ship.

Example 3

Please refer to Figure 1, Figure 3 and Figure 4, on the basis of Embodiment 1 or Embodiment 2, a plurality of cavitation partitions 6 are arranged in the cavities, that is, the cavitation coamings are located between the two ship side coamings 3 between.

Each cavitation baffle 6 is respectively connected to the lower surface of the ship flat bottom 2 rotatably along the length of the ship, and divides the cavities into a plurality of air cavities. Preferably, the plurality of cavitation partitions 6 are symmetrical with respect to the center line of the bottom of the ship, and the cavities are equally divided into a plurality of cavities.

Each cavitation partition 6 is respectively equipped with one or more driving structures as described in the first embodiment. Specifically, the connection and positional relationship between the cavitation partition 6 and the driving structure and the flat bottom 2 of the ship are the same as the connection and positional relationship between the side coaming 3 and the driving structure and the flat bottom 2 of the ship. The cavitation partition 6 is connected to the follower in the corresponding driving structure. The cavitation partition 6 and the ship flat bottom 2 are also connected by hinges, and a fixed sealing strip 11 is provided on the rotating outer side of the joint to support the fixed cavitation partition 6 and prevent the air cavity from leaking.

Further, the cavitation partition 6 rotates to the centerline during the folding process. Preferably, the cavitation partition 6 is perpendicular to the flat bottom 2 of the ship in the unfolded state.

The length of the cavitation partition 6 is related to the position of the bow coaming 4 and the stern coaming 5 (or the bow wedge block 9, the stern wedge block 10). The plate 5 (or the bow wedge block 9) is close, and the stern end of the cavitation partition 6 is close to the stern coaming 5 (or the stern wedge block 10). The number of cavitation partitions 6 is related to the ship’s width, draught, and the ship’s heel angle. The height value of the cavitation partition 6 is the vertical distance between the lower end of the cavitation coaming and the flat bottom 2 of the ship when it is deployed. The height values of the cavitation panels are similar.

The cavitation partition 6 can also adopt a segmented design, each segment is correspondingly provided with a driving structure for driving its rotation, and the segmented junction surface of the cavitation partition 6 adopts an air-leakage design.

Example 4

Please refer to Figure 1 to Figure 8. A gas layer drag reduction ship is equipped with a ship gas layer drag reduction system. Any one or more of 2, 3, a collapsible containment device used in a ship's air layer drag reduction system.

The foldable containment device used in the ship's air layer drag reduction system can realize the rotation of the containment structure, that is, the air pocket panel and the air pocket partition 6 relative to the ship flat bottom 2.

Therefore, the air-layer drag reduction ship provided by this embodiment can rotate the air-cavity coaming and the air-cavity partition 6 to fit the flat bottom 2 of the ship when navigating in a shallow water channel, thereby maintaining the draft of the original ship and avoiding the air-cavity coaming. The angle between the cavitation partition 6 and the flat bottom 2 of the ship increases the draught and affects normal navigation.

When the air layer drag reduction system is working, that is, when the air jet equipment is jetting, the air layer drag reduction ship can adjust the lowest point of the bow coaming 4 and the stern coaming 5 in the vertical direction at different speeds and different draughts through the drive structure The distance from the flat bottom 2 of the ship increases the stability of the bottom gas layer of the ship.

When the air layer drag reduction system is not working, that is, when the air jet device does not blow air, the cavitation coaming plate and the air cavity partition 6 can be rotated to fit the ship flat bottom 2, reducing the foldable enclosure device used for the ship air layer drag reduction system The additional drag caused at the bottom of the ship enhances drag reduction and energy saving effects.

The embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned embodiments. Even if various changes are made to the present disclosure, if these changes fall within the scope of the claims of the present disclosure and equivalent technologies, they still fall within the protection scope of the present disclosure.

Claims

A collapsible containment device for a ship's air layer drag reduction system is installed on the flat bottom of an air layer drag reduction ship. Above the flat bottom of the ship is a bottom tank, which is characterized in that it comprises:

A plurality of air pockets, each of the air pockets is rotatably connected to the lower surface of the ship's flat bottom, and after each of the air pockets is rotated and unfolded, they are matched to form an enclosure for accommodating the air layer drag reduction ship Air pockets in the air layer;

A plurality of driving structures, each of the air pocket panels is respectively equipped with one or more of the driving structures, the driving structure includes a driving part and a transmission part, the driving part is arranged in the bottom cabin, the One end of the transmission part is connected to the driving part, and the other end passes through the ship flat bottom and is connected to the air pocket coaming, and a sealing structure is provided between the transmission part and the ship flat bottom; the driving part passes through the The transmission member drives the air pocket panel to rotate relative to the flat bottom of the ship, so as to realize the unfolding or folding of the air pocket panel.
The foldable containment device for the gas layer drag reduction system of a ship according to claim 1, wherein the transmission member is an arc-shaped transmission member, and the ship flat bottom is provided with a plurality of arc-shaped The first through hole corresponding to the transmission part, one end of the arc-shaped transmission part is connected to the driving part, and the other end passes through the first through hole to be connected to the air pocket enclosure. The arc-shaped transmission part and The sealing structure is arranged between the first through holes;

The arc-shaped transmission member slides up and down in the first through hole to drive the air pocket coaming plate to rotate with respect to the ship flat bottom.
The foldable enclosure device for a ship's air layer drag reduction system according to claim 2, wherein the arc-shaped transmission member is an arc-shaped strut.
The foldable containment device for a ship's air layer drag reduction system according to claim 2, wherein the sealing structure is a watertight box connected to the upper surface of the ship flat bottom watertightly, and the watertight box is provided with There is a second through hole, and the arc-shaped transmission member passes through the second through hole and is connected to the second through hole in a watertight sliding manner.
The foldable containment device for the ship's air layer drag reduction system according to claim 2, wherein the driving member is a hydraulic device, and the fixed end of the hydraulic device is connected to the upper surface of the ship's flat bottom. Connected, the output end of the hydraulic equipment is connected with the arc-shaped transmission member, and the arc-shaped transmission member is driven to slide up and down in the first through hole.
The foldable enclosure device for the ship's air layer drag reduction system according to claim 5, wherein the hydraulic equipment is a hydraulic rod, the hydraulic rod is arranged in the bottom tank, and the hydraulic rod The output end of is connected with the arc-shaped transmission member.
The foldable containment device for a ship's air layer drag reduction system according to claim 1, wherein the air pocket panel comprises:

Two side coamings are respectively arranged on the port and starboard parts of the flat bottom of the ship along the length of the ship;

The bow coaming is arranged on the bow part of the flat bottom of the ship along the width of the ship;

The stern coaming is arranged on the stern part of the flat bottom of the ship along the width of the ship;

The two side coamings, the bow coaming and the stern coaming are all rotatably connected with the lower surface of the ship's flat bottom, and after rotating and unfolding, they cooperate with each other to form the air-layer drag reduction ship Air pockets in the air layer;

The two side coamings, the bow coaming and the stern coaming are respectively equipped with one or more driving structures for driving them to rotate.
The foldable enclosure device for the ship's air layer drag reduction system according to claim 7, wherein the bow coaming and the stern coaming both have a first flat bottom connected to the ship. Side and a second side opposite to the first side;

A bow flexible member is provided on the stern side of the bow coaming, and the bow flexible member is connected to the flat bottom of the ship and the second side of the bow coaming respectively. The bow flexible member, The bow coaming and the flat bottom of the ship cooperate to form a first triangular structure;

A stern flexible member is provided on the stern side of the stern coaming, and the stern flexible member is connected to the ship flat bottom and the second side of the stern coaming respectively, and the stern flexible member, The stern coaming and the flat bottom of the ship cooperate to form a second triangular structure.
The foldable containment device for a ship's air layer drag reduction system according to claim 1, wherein the air pocket coaming is hingedly connected to the ship flat bottom.
The foldable containment device for the ship's gas layer drag reduction system according to claim 9, wherein a solid sealing strip is provided on the rotating outer side of the connection between the ship's side coaming and the ship's flat bottom.
The collapsible containment device for the gas layer drag reduction system of a ship according to claim 1, wherein the vertical distance between the lowermost end of the ship side coaming and the flat bottom of the ship when unfolded is 100 Between millimeters and 800 millimeters.
The foldable enclosure device for a ship's air layer drag reduction system according to claim 1, wherein each of the air pockets includes a plurality of sequentially arranged enclosure panels, and the enclosure panels are divided into The plates are respectively rotatably connected with the lower surface of the flat bottom of the ship; each of the coaming sub-plates is respectively equipped with one or more of the driving structures.
The foldable containment device for a ship's air layer drag reduction system according to claim 1, further comprising a plurality of cavitation partitions, and each of the cavitation partitions is rotatably connected to the ship along the length of the ship. The lower surface of the flat bottom of the ship, and the cavitation partitions are all located in the cavities; each of the cavitation partitions is respectively equipped with one or more of the driving structures.
A gas layer drag reduction ship, characterized in that the ship is provided with a foldable containment device for a ship's gas layer drag reduction system according to any one of claims 1 to 13.