CN110697000B

CN110697000B - Floating dock for locally repairing bottom of ship

Info

Publication number: CN110697000B
Application number: CN201910985733.8A
Authority: CN
Inventors: 杨锋; 林盛昌; 李志刚; 王治庆; 朱政兴
Original assignee: Nantong Institute of Technology
Current assignee: Nantong Institute of Technology
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2021-09-21
Anticipated expiration: 2039-10-16
Also published as: CN110697000A

Abstract

The invention discloses a floating dock for locally repairing a ship bottom, which comprises a water lower part and an operation cabin, wherein the operation cabin is provided with an upward opening, and the opening part of the operation cabin is in sealed contact with the ship bottom of a ship to be repaired; the water upper part is connected with one end of the water lower part and extends upwards, the water upper part is positioned above the liquid level, the water upper part comprises a cab and a maintenance personnel room, and the maintenance personnel room is provided with a personnel pipeline communicated with the operation cabin; the sealing drainage mechanism comprises a circle of waterproof pad arranged on the edge of the opening part of the operation cabin, the waterproof pad protrudes upwards, the inner ring of the waterproof pad is also provided with a circle of water falling groove which is not communicated with the operation cabin, the opening of the water falling groove is upward, and the bottom of the water falling groove is communicated with the outside through a drainage pipe connected with a water pump. The invention has small integral tonnage and low cost, can form a water-proof operation cabin cavity at the part of the bottom of the ship to be repaired, is convenient for personnel to hold and carry out maintenance, and has a water-proof and drainage double structure to avoid water seepage.

Description

Floating dock for locally repairing bottom of ship

Technical Field

The invention relates to the field of shipping, in particular to a floating dock for partially repairing a ship bottom.

Background

The bottom of a ship is susceptible to damage, such as impact, and the like, and the steel structure or coating of the bottom of the ship may be damaged, requiring some repair. A general method of rehabilitation is to use a dock, which is divided into a dry dock and a floating dock. The dock restoration is time-consuming and labor-consuming, but has good effect. Another repair method is to use a ship bottom robot or diver for repair, which is suitable for an operation with a small amount of repair. However, for the state to be repaired between the two repairing methods, the ship bottom robot and divers are difficult to repair, and the overall dock is poor in economic efficiency.

Disclosure of Invention

The invention aims to solve the problem of providing a floating dock for locally repairing the bottom of a ship, which has small integral tonnage and low cost, can form a water-proof operation cabin cavity at the local bottom of the ship to be repaired, is convenient for personnel to hold and carry out maintenance, and has a water-proof and water-draining double structure so as to avoid water seepage.

In order to solve the above problems, the present invention provides a floating dock for partially repairing a bottom of a ship, and to achieve the above objects, the present invention adopts a technical scheme for solving the technical problems of:

a floating dock for partial bottom repair, comprising: the underwater part comprises an operation cabin with an upward opening, and the mouth part of the operation cabin is in sealed contact with the bottom of the ship to be repaired; the water upper part is connected with one end of the water lower part and extends upwards, the water upper part is positioned above the liquid level, the water upper part comprises a cab and a maintenance personnel room, and the maintenance personnel room is provided with a personnel pipeline communicated with the operation cabin; the sealing drainage mechanism comprises a circle of waterproof pad arranged on the edge of the opening part of the operation cabin, the waterproof pad protrudes upwards, the inner ring of the waterproof pad is also provided with a circle of water falling groove which is not communicated with the operation cabin, the opening of the water falling groove is upward, and the bottom of the water falling groove is communicated with the outside through a drainage pipe connected with a water pump.

The beneficial effect of adopting above-mentioned technical scheme is: the scheme is similar to a semi-submersible dock, but is different from a traditional floating dock and is more similar to a semi-submersible submarine capable of working, the scheme cannot push a ship out of the water surface like the floating dock, but can form a water-proof working space at the bottom of the ship partially, and operators can repair the bottom of the ship. The ship to be repaired does not need to be provided with large tonnage for supporting the ship to be repaired out of the water surface. The operation cabin is attached to the bottom of the ship to be repaired to form a closed space, and the operation cabin can be tightly attached to the bottom of the ship from the lower part, so that the bottom of the ship can be repaired. The whole tonnage is small, the manufacturing cost is low, and the maintenance personnel can be accommodated, and can work in a closed air space without carrying diving equipment like divers. Considering that the shapes of the bottoms of various ships to be overhauled are different, the waterproof pad is difficult to completely seal the local part, and part of water can slowly permeate into the waterproof pad, generally permeates into the joint between the waterproof pad and the ship bottom and can just fall into the water falling groove, the water falling groove plays a role in draining the permeated water, the waterproof pad is isolated from water, the water falling groove drains water, the double effects ensure that no water is basically accumulated in the operation cabin, and a dynamic balance effect is achieved. The cab is above the water surface, the floating dock for repairing can be well operated, and the cab also comprises control over the whole dock besides driving. And a maintenance personnel room is arranged below the cab and used for placing maintenance personnel. Various electric control components in the cab are prevented from being affected with damp, and personnel wait for a maintenance personnel room above a waterline when not operating, so that the safety is also ensured.

As a further improvement of the invention, the waterproof pad is made of elastic rubber.

The beneficial effect of adopting above-mentioned technical scheme is: the elastic rubber material has enough elasticity and wear resistance, and is suitable for contact sealing of the ship bottom.

As a further improvement of the invention, the maintenance personnel room is arranged below the cab, and an openable hatch cover is arranged at the junction of the personnel pipeline and the operation cabin.

The beneficial effect of adopting above-mentioned technical scheme is: the cabin cover enables the operation cabin and the personnel pipeline to be selectively communicated or sealed, improves the safety and prevents accumulated water in the operation cabin from flowing back to the maintenance personnel room.

As a further improvement of the invention, an air compressor is arranged in the maintenance personnel room, the air compressor is connected with an air pipe positioned in the personnel pipeline, one end of the air pipe penetrates through the upper part of the water and is exposed to the outside, and the other end of the air pipe penetrates through the cabin cover and is exposed in the operation cabin.

The beneficial effect of adopting above-mentioned technical scheme is: the air pipe is always inflated into the operation cabin, on one hand, the air pressure can properly inhibit water from permeating, and meanwhile, the air pressure can assist in pressing accumulated water at the bottom of the operation cabin out of the downpipe, so that a dynamic balance space is further formed, and if redundant air exists in the operation cabin, the excess air can be discharged from the drainage pipe. If accumulated water in the operation cabin is discharged, air blown by the air compressor can play a role in filling the space.

As a further improvement of the invention, the cabin cover is hinged with the inner wall of the operation cabin, the air pipe is fixedly contacted with the inner wall of the personnel pipeline, and the air pipe is a flexible air pipe.

The beneficial effect of adopting above-mentioned technical scheme is: the diameter of the air pipe is small, so that personnel pipelines can be used, meanwhile, the passing of personnel is not influenced, and the opening and closing of the hatch cover are not influenced by the flexible air pipe.

As a further improvement of the invention, the lowest part of the bottom of the work cabin is provided with a downpipe communicated with the drain pipe.

The beneficial effect of adopting above-mentioned technical scheme is: if the moisture penetrates through the waterproof pad and is not completely absorbed by the downpipe, the moisture overflowing into the operation cabin can be discharged through the downpipe. On the basis of two guarantee measures of waterproof cushion, water-proof of water-falling groove and water drainage, a water drainage mechanism is additionally arranged, and the possibility that the operation cabin is not ground is improved.

As a further improvement of the invention, the bottom of the underwater part is provided with a plurality of ballast tanks with independent water drainage and water inlet, the number of the ballast tanks is four, the connecting line of the centroids of the four ballast tanks is rectangular, and the centroid of the profile of the horizontal section of the underwater part is superposed with the centroid of the rectangle.

The beneficial effect of adopting above-mentioned technical scheme is: the bottom of the dock is provided with a ballast tank, and the ballast tank mainly has the functions of controlling the sinking and floating and balancing of the device, water entering the ballast tank, sinking of the dock, water drainage of the ballast tank and floating of the ship. The ballast tanks are four in total and are arranged in a Chinese character tian shape from front to back, left to right. The height of operation cabin can be adjusted through the water injection of self, play water in the ballast tank, is convenient for laminate with the bottom of a ship, and the ballast tank that lies in the four corners respectively simultaneously possesses independent water injection, play water ability separately, through confirming the different water yield in each ballast tank, can adjust the orientation of operation cabin top oral area, except realizing whole lift. And the leveling function can be realized, and the ship bottom can be conveniently attached to different ship bottoms.

As a further improvement of the invention, the water pump is connected with the water discharge pipe and the ballast tank through a three-way valve.

The beneficial effect of adopting above-mentioned technical scheme is: the same set of water pump system can be utilized to realize the drainage of each part, and the overall cost is reduced.

As a further improvement of the invention, an explosion propelling pipe is fixed on the water surface, the explosion propelling pipe provides horizontal thrust during explosion, and the horizontal thrust direction of the explosion propelling pipe is a direction departing from one end of the water surface.

The beneficial effect of adopting above-mentioned technical scheme is: the explosion propulsion pipe utilizes the explosive force of explosive, provides the one-way huge thrust of short time for repairing with floating dock, can deal with emergency, pushes away floating dock from the bottom of treating the ship of repairing rapidly, avoids treating the come-up of ship's separation floating dock of repairing, can deal with the condition that the operation cabin was intake in a large amount of suddenly, guarantees the safety of personnel in the operation cabin. Because the explosion propelling pipe is used under special conditions, the whole cost of the explosion propelling pipe is low, the disposable device is enough to be used, and meanwhile, the instantaneous force is enough to be generated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of one embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

Fig. 4 is a schematic structural diagram of another embodiment of the present invention.

1-a cab; 2-a maintenance personnel room; 3-waterproof pad; 4-operation cabin; 5, a drain pipe; 6-ballast tank; 7-personnel pipes; 8-a downpipe; 9-a hatch cover; 10, an air compressor; 11-trachea; 12-a water pump; 13-a water falling groove; 14-water top; 15-water bottom; 16-exploding the pusher tube.

Detailed Description

The present invention will be further described in detail with reference to the following specific examples:

in order to achieve the object of the present invention, a floating dock for partial bottom repair, comprising: the underwater part 15 comprises an operation cabin 4 with an upward opening, and the mouth part of the operation cabin 4 is in sealed contact with the bottom of the ship to be repaired; an underwater portion 14 connected to one end of the underwater portion 15 and extending upward, the underwater portion 14 being located above the liquid level, the underwater portion 14 including a cab 1 and a maintenance personnel room 2, the maintenance personnel room 2 including a personnel duct 7 communicating with the work cabin 4; the sealed drainage mechanism comprises a circle of waterproof pad 3 arranged on the edge of the opening part of the operation cabin 4, the waterproof pad 3 protrudes upwards, a circle of water falling groove 13 which is not communicated with the operation cabin 4 is further arranged on the inner ring of the waterproof pad 3, the water falling groove 13 is opened upwards, and the bottom of the water falling groove 13 is communicated with the outside through a drain pipe 5 connected with a water pump 12.

In other embodiments of the present invention, the waterproof pad 3 is made of elastic rubber.

In other embodiments of the invention, the service personnel room 2 is arranged below the cab 1, and the junction of the personnel duct 7 and the working cabin 4 is provided with a retractable hatch 9.

In other embodiments of the present invention, an air compressor 10 is disposed in the service personnel room 2, the air compressor 10 is connected to an air pipe 11 disposed in the personnel duct 7, one end of the air pipe 11 passes through the water upper portion 14 and is exposed to the outside, and the other end passes through the hatch 9 and is exposed to the inside of the operation cabin 4.

In other embodiments of the present invention, the hatch 9 is hinged to the inner wall of the working compartment 4, the air pipe 11 is fixed in contact with the inner wall of the personnel pipeline 7, and the air pipe 11 is a flexible air pipe.

Fig. 4 compares with fig. 3, the hatch 9 is in an open state.

In other embodiments of the invention, the lowest part of the bottom of the working cabin 4 is provided with a downpipe 8 communicating with the drainpipe 5.

A liquid flow meter is arranged in the downpipe 8, an alarm is arranged in the cab 1 and electrically connected with the liquid flow meter, a rated value is set, and once the liquid flow meter exceeds the rated value, the alarm gives an alarm. The alarm may be active at a nominal value of 0.1 cubic meters per second. The alarm has the functions of flashing and buzzing.

The flow in the downpipe 8 is very high, which indicates that the accumulated water at the bottom of the operation cabin 4 is excessive continuously and the water pump 12 is out of time, and reminds the personnel in the cab 1 to stop maintenance operation.

In other embodiments of the present invention, the bottom of the underwater portion 15 is provided with a plurality of ballast tanks 6 having independent water drainage and water intake, the number of the ballast tanks 6 is four, the connecting lines of the centroids of the four ballast tanks 6 are rectangular, and the centroid of the horizontal cross-sectional profile of the underwater portion 15 coincides with the centroid of the rectangle.

In other embodiments of the invention, the water pump 12 is connected to the water discharge pipe 5 and the ballast tank 6 by a three-way valve.

In other embodiments of the invention, as shown in fig. 4, the water upper part 14 is fixed with an explosion propulsion pipe 16, the explosion propulsion pipe 16 provides horizontal thrust when exploding, and the horizontal thrust direction of the explosion propulsion pipe 16 is a direction away from the end where the water upper part 14 is located.

The side wall of the operation cabin 4 is provided with a sealable safety cabin, the opening of the safety cabin is provided with a water-proof door which can be opened and closed, the height of the water-proof door is higher than the centroid height of the operation cabin 4, and the water-proof door is positioned on the opposite side of the cabin cover 9 of the personnel pipeline 7.

Once the operation cabin 4 has the steep water inlet condition, maintenance personnel need to withdraw, if the angle reason, the maintenance personnel are inconvenient to transfer to the direction of the cabin cover 9 of the personnel pipeline 7, and the opposite closed safety cabin with the water isolation door can be temporarily hidden by the personnel. The height of the safety cabin is not at the bottom of the operation cabin 4, so that the initial water inflow can not submerge to the water-stop door. The escape path of the personnel is shortened, and the survival probability under the emergency is further increased.

During actual work, the ship to be repaired is in an idle load state, the ship to be repaired is as flat as possible, and the draught of the ship to be repaired is as shallow as possible. This repair with ballast tank 6 of floating dock intake, 4 tops in the operation cabin are less than and wait to repair the ship bottom of a ship, then move to the operation area, and ballast tank 6 drainage is repaired with the floating dock come-up for operation cabin 4 hugs closely in the bottom of a ship, and waterproof pad 3 around the operation cabin 4 contacts with waiting to repair the ship bottom of a ship, surrounds whole operation area, thereby plays certain waterproof effect. The working chamber 4 begins to drain, and because the buoyancy is too great due to the large amount of drainage of the working chamber 4, the ballast tank 6 begins to fill with water while the working chamber 4 drains, so that the buoyancy is balanced. The waterproof pad 3 is properly pushed upwards, and the force cannot be too large or too low. A pressure sensor for sensing the jacking force is arranged in the waterproof pad 3. After the working cabin 4 is drained, moisture is injected into the water falling groove 13 between the waterproof pad 3 and the working cabin 4 when the moisture penetrates through the waterproof pad 3, and is discharged to the outside through the drain pipe 5, so that the moisture is prevented from being injected into the working cabin 4. At this time, the person enters the working chamber 4 and can start the repair work of the bottom of the ship. After the operation is completed, the drainage device stops operating, water is slowly filled into the operation cabin 4, and the floating dock for repairing sinks and then leaves the bottom of the ship to be repaired.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.

Claims

1. A floating dock for partial bottom repair, comprising:

the underwater part comprises an operation cabin with an upward opening, and the opening part of the operation cabin is in sealed contact with the bottom of the ship to be repaired;

the water upper part is connected with one end of the water lower part and extends upwards, the water upper part is positioned above the liquid level, the water upper part comprises a cab and a maintenance personnel room, and the maintenance personnel room is provided with a personnel pipeline communicated with the operation cabin;

the sealed drainage mechanism comprises a circle of waterproof pad arranged on the edge of the opening part of the operation cabin, the waterproof pad protrudes upwards, the inner ring of the waterproof pad is also provided with a circle of water falling groove which is not communicated with the operation cabin, the opening of the water falling groove is upward, and the bottom of the water falling groove is communicated with the outside through a drainage pipe connected with a water pump;

the ballast tank is characterized in that a plurality of ballast tanks with independent drainage and water inlet are arranged at the bottom of the underwater part, the number of the ballast tanks is four, connecting lines of respective centroids of the four ballast tanks are rectangular, and the centroid of the outline of the horizontal section of the underwater part coincides with the centroid of the rectangle.

2. The floating dock for partial bottom repair according to claim 1, wherein: the waterproof pad is made of elastic rubber.

3. The floating dock for partial bottom repair according to claim 1, wherein: the maintenance personnel room is arranged below the cab, and a retractable hatch cover is arranged at the junction of the personnel pipeline and the operation cabin.

4. The floating dock for partial bottom repair according to claim 3, wherein: the indoor air compressor that is equipped with of maintenance personal, the air compressor is connected with the trachea that is located personnel's pipeline, tracheal one end passes water upper portion and exposes in the external world, and the other end passes the cabin cover and exposes in the operation cabin.

5. The floating dock for partial bottom repair according to claim 4, wherein: the cabin cover is hinged and fixed with the inner wall of the operation cabin, the air pipe is fixed with the inner wall of the personnel pipeline in a contact mode, and the air pipe is a flexible air pipe.

6. The floating dock for partial bottom repair according to claim 1, wherein: the lowest part of the bottom of the operation cabin is provided with a downpipe communicated with a drainpipe.

7. The floating dock for partial bottom repair according to claim 6, wherein: the water pump is connected with the drain pipe and the ballast tank through a three-way valve.

8. The floating dock for partial bottom repair according to claim 1, wherein: the water upper part is fixed with an explosion propulsion pipe, the explosion propulsion pipe provides horizontal thrust when exploding, and the horizontal thrust direction of the explosion propulsion pipe is the direction departing from one end of the water upper part.