A floating dry dock

Abstract

The present invention relates to the technical field of ship repair equipment, and in particular to a floating dock. The floating dock is moored by a starboard pile-holding device. The floating dock includes a main hull, and a pump cabin is arranged on the starboard side of the main hull. The pump cabins are evenly distributed in the front and rear cabins of the main hull. At least two ballast pumps and at least two seawater tanks are arranged in each pump cabin. Each ballast pump controls five corresponding ballast tanks, and the two ballast pumps can be used as backups for each other through remote control butterfly valves. A sewage recovery system is also arranged in the main hull. The present invention has the following effects: it solves the problems that silt is sucked into the cabin and the water flow of the pump drainage impacts the seabed when the floating dock is in use, and it is convenient to collect the sewage generated during ship repair.

Description

Technical Field

[0001] The present invention relates to the technical field of ship repair equipment, and in particular to a floating dock. Background Art

[0002] A floating dock is a conventional equipment for ship repair and construction. Currently, most pump rooms of floating docks designed and built at home and abroad are arranged under the pontoon decks on both starboard and port sides. One or two ballast pumps are installed in each pump room to control the front and rear ballast tanks on one side respectively. There is no recovery system and collection chamber for "sewage generated during the repair and construction process and sewage generated on the repair ship". Most floating docks are moored at fixed berths through anchor chains and cables. Therefore, the existing designed and built floating docks are all considered for repairing and building conventional ship types in conventional sea areas. However, with the diversification of ship repair and construction, environmental protection requirements, and the sea area requirements of ship repair and construction factories, conventional floating docks can no longer meet the requirements of many ship repair and construction factories with special repair and construction needs. For example, during the process of ship repair, some sewage is often generated, and the sewage generally contains oil stains or waste. If directly discharged into the sea water, it will cause pollution. For example, the seabed near the dock of the ship repair and construction factory is "artificially excavated". When a conventional floating dock is used, problems such as silt being sucked into the cabin and the pump drainage water flow impacting the seabed will occur. Summary of the Invention

[0003] In order to solve the problems that when the right side of the floating dock is against the dock and the left side is the seabed, silt will be sucked into the cabin and the pump drainage water flow will impact the seabed during use, and to facilitate the collection of sewage generated during ship repair, the present invention provides a floating dock.

[0004] A floating dock provided by the present invention adopts the following technical solutions: The floating dock is moored by a starboard pile-holding device. The floating dock includes a main hull. A pump room is arranged on the starboard side of the main hull. The pump rooms are evenly distributed in the front and rear cabins of the main hull. At least two ballast pumps and at least two seawater tanks are arranged in each pump room. Each ballast pump controls five corresponding ballast tanks, and the two ballast pumps can be used as backups for each other through remote control butterfly valves. A sewage recovery system is also arranged in the main hull.

[0005] By adopting the above technical solutions, the floating dock is moored by the method of "holding the pile" on the starboard side to solve the restriction of the approach bridge of the dock in the ship repair and construction factory. Because the right side of the floating dock is against the dock and the left side is the seabed, the pump rooms are only arranged on the single starboard side. To solve the problem that the seabed near the dock of the ship repair and construction factory is "artificially excavated" and to avoid silt being sucked into the cabin and the pump drainage water flow impacting the seabed, by setting up a sewage recovery system, the environmental protection requirements for ship repair are met, and the flushing sewage generated during the repair and construction process and the sewage generated during ship repair are recovered.

[0006] Preferably, the specific structure of the sewage recovery system is as follows: there are at least two sewage tanks arranged in the main hull, a sewage trough is arranged on the main hull, a grille is erected on the upper side of the sewage trough, a slant-set intercepting net is detachably installed on the inner wall of the sewage trough, and the lower side of the sewage trough communicates with the sewage tank, and at least two water pumps are arranged in the sewage tank.

[0007] By adopting the above technical solution, during the repair process, the sewage will flow into the sewage trough, and the intercepting net in the sewage trough can collect some solid impurities, while the liquid will flow into the sewage tank. The slant-set intercepting net can stack the impurities along the height when intercepting the impurities, and will not block all the filterable areas, and can maintain filtration for a long time, and can realize the collection of the sewage generated during the repair and protect the environment.

[0008] Preferably, sliding rods are arranged at the four corners of the intercepting net, and sliding grooves for the sliding rods to be embedded and slide are vertically arranged on the inner wall of the sewage trough.

[0009] By adopting the above technical solution, the whole intercepting net will be slidably arranged in the sewage trough, which is convenient for installation and disassembly.

[0010] Preferably, a driving component for driving the intercepting net to move is arranged on the inner wall of the sewage trough.

[0011] Preferably, the driving component includes a threaded rod rotatably connected in the sewage trough, a mating block is arranged at the lowest end of the intercepting net, and the threaded rod is threadedly connected to the mating block.

[0012] By adopting the above technical solution, since the intercepting net is circumferentially limited in the sewage trough, by rotating the threaded rod, the intercepting net will slide in the vertical direction, so as to realize the lifting function of the intercepting net.

[0013] Preferably, the extension length of the threaded hole in the mating block is at least one-tenth of the length of the threaded rod.

[0014] By adopting the above technical solution, the sufficient extension distance of the threaded hole can ensure the stability during the lifting process.

[0015] Preferably, the mating block is detachably connected to the intercepting net.

[0016] By adopting the above technical solution, when the intercepting net moves to the uppermost end, for the convenience of taking, the mating block is separated from the intercepting net, and the intercepting net can be directly taken out upwards.

[0017] Preferably, the mating block penetrates through the intercepting net, and a base extends from the side of the mating block close to the bottom of the sewage trough, and the base is bolted to the intercepting net.

[0018] By adopting the above technical solution, the two are fixed by bolts. When removing the interception net, the two are separated, and the mating block will remain on the threaded rod.

[0019] Preferably, the starboard pile-holding device includes a plate eye device arranged on the outer plate of the starboard side of the main hull. A number of pin holes are arranged on the plate eye device, and the plate eye device is connected to the extended pile foundation on the dock through the pin holes.

[0020] By adopting the above technical solution, the pile-holding device at the dock end is a device that can move up and down along the pile foundation with the water level. This connecting device only restricts the front, back, left, and right movement of the floating dock and can float up and down with the floating dock due to different water levels. When the floating dock needs to be displaced, the pin can be pulled out.

[0021] Preferably, at least two generators are arranged on the main hull.

[0022] By adopting the above technical solution, when shore power cannot be supplied, it can meet the use of 2 drainage and ballast pumps of the floating dock, and the emergency generators can be used in parallel.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects: Because the right side of the floating dock is close to the dock and there are problems with the seabed on the left side, the pump room is only arranged on the single starboard side. To solve the problem that the seabed near the dock of the ship repair yard is "artificially excavated" and to avoid silt being sucked into the cabin and the water flow of the pump drainage impacting the seabed, by setting up a sewage recovery system, it meets the environmental protection requirements for ship repair, recovers the flushing sewage generated during the ship repair process and the sewage generated by shipbuilding and ship repair. During the repair process, the sewage will flow into the sewage tank, and the interception net in the sewage tank can collect some solid impurities, while the liquid will flow into the sewage cabin. The inclined interception net can stack the impurities along the height when intercepting the impurities, and will not block all the filterable areas, and can maintain a long filtering time, and can realize the collection of sewage generated during maintenance and protect the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present invention;

[0025] Figure 2 is a schematic structural diagram of the present invention;

[0026] Figure 3 is a schematic diagram of the partial structure of the present invention Figure 1 ;

[0027] Figure 4 is a schematic diagram of the structure after hiding the grille Figure 2 ;

[0028] Figure 5It is a schematic diagram of a local explosion of the present invention Figure 3 ;

[0029] Figure 6 It is a schematic diagram of the connection relationship between the threaded rod and the mating block Figure 4 ;

[0030] Figure 7 It is a schematic diagram of the structure of the mating block Figure 5 .

[0031] Explanation of reference numerals: 1, pump compartment; 2, discharge ballast pump; 3, seawater tank; 4, remote control butterfly valve I; 5, pipeline; 6, remote control gate valve I; 7, butterfly check valve; 8, remote control butterfly valve II; 9, reducing joint; 10, blind flange; 12, expansion joint; 13, suction port; 14, plate eye device; 15, pin hole; 16, extension pile foundation; 20, ballast tank; 100, main hull; 110, sewage tank; 120, sewage trough; 121, grille; 122, intercepting net; 123, sliding rod; 124, sliding groove; 130, threaded rod; 131, mating block; 132, base. Detailed implementation manners

[0032] The present invention will be further described in detail below with reference to the accompanying drawings

[0033] A floating dock, referring to Figure 1 、 Figure 2, this floating dock is moored by a right-side pile-holding device. The floating dock includes a main hull 100. The right-side pile-holding device includes a plate-eye device 14 arranged on the outer plate of the right side of the main hull 100. A number of pin holes 15 are provided on the plate-eye device 14. The plate-eye device 14 is connected to the extended pile foundation 16 on the dock through the pin holes 15. The pile-holding device at the dock end is a device that can move up and down along the extended pile foundation 16 with the water level. This connecting device only restricts the front-back, left-right movement of the floating dock and can float up and down with the floating dock due to different water levels. When the floating dock needs to be relocated, the pins can be pulled out. There is a pump cabin 1 arranged on the right side of the main hull 100. The pump cabins 1 are evenly distributed in the front and rear cabins of the main hull 100. At least two ballast pumps 2 and at least two seawater tanks 3 are arranged in each pump cabin 1. Each ballast pump 2 controls five corresponding ballast tanks 20, and the two ballast pumps 2 can be used as spares for each other through remote control butterfly valves. Specifically, in order to solve the problems of the right side against the dock and the left-side seabed for this floating dock, the pump cabins 1 are arranged on the right side. The pump cabins 1 include facilities such as seawater tanks 3, remote control butterfly valves, and ballast pumps 2. When suction ballast is required, open the remote control gate valve 1 6; open the remote control butterfly valve 1 4, and seawater is injected into each ballast tank in turn through the seawater tank 3, pipeline 5, remote control butterfly valve 1 4, expansion joint 12, and suction port 13. When discharging ballast water is required, close the remote control gate valve 1 6, butterfly check valve 7, and remote control gate valve 2; open the remote control butterfly valve 1 4, start the ballast pump 2, and the seawater in the ballast tank is discharged to the outside of the hull in turn through the suction port 13, pipeline 5, expansion joint 12, remote control butterfly valve 1 4, ballast pump 2, butterfly check valve 7, and remote control gate valve 2. When the remote control butterfly valve 2 8 is opened and closed, the ballast pump 2 can discharge ballast for the cabin separately, or the two ballast pumps 2 can be used as spares for each other. By setting a reducing joint 9, it is convenient to connect pipelines with different diameters to valves. For easy disassembly and convenient maintenance of pipe sections, a blind flange 10 is set to connect the fasteners to the flange.

[0034] Refer to Figure 3 , Figure 4 , a sewage recovery system is also arranged in the main hull, including the main hull 100. There are no less than two sewage tanks 110 arranged in the main hull 100. In this embodiment, two sewage tanks 110 are taken as an example. The sewage tanks 110 on the left and right sides can be balanced, which is more appropriate and has a larger storage capacity. A sewage trough 120 is arranged on the main hull 100. A grille 121 is erected on the upper side of the sewage trough 120. The grille 121 is placed at the upper end of the sewage trough 120 and can also be fixedly installed by bolts. The lower side of the sewage trough 120 is communicated with the sewage tank 110. Two pumps are equipped in each sewage tank 110, one for standby and one for use. The two pumps can play their roles alternately, but when too much drainage enters the tank, they should be able to work together. A valve is arranged on the water inlet pipe of each sewage tank 110 and is closed when the dock floats or sinks. The collected sewage is discharged to the shore through the sewage collection pump to meet the environmental protection requirements.

[0035] Refer toFigure 4 , Figure 5 , a tilt - set intercepting net 122 is detachably installed on the inner wall of the sewage tank 120. The intercepting net 122 can first accumulate filtered impurities on its surface, and the tilt - set intercepting net 122 can enable the upper part of the intercepting net 122 to always maintain the function of draining water, reducing the situation of difficult water drainage caused by impurity accumulation, and can also maintain filtration for a long time.

[0036] In this embodiment, the tilt angle of the intercepting net 122 does not exceed 50°, and sliding rods 123 are provided at the four corners of the intercepting net 122. The sliding rods 123 extend horizontally outwards. At the same time, sliding grooves 124 for the sliding rods 123 to be embedded and slide are vertically provided on the inner wall of the sewage tank 120. The sliding grooves 124 are open upwards and closed downwards. When the sliding rods 123 move to the bottom, an obstruction will be formed, so that there is a space between the intercepting net 122 and the bottom of the sewage tank 120.

[0037] Refer to Figure 4 , Figure 6 A driving component for driving the intercepting net 122 to move back and forth in the vertical direction is provided in the sewage tank 120. The driving component includes a threaded rod 130 rotatably connected in the sewage tank 120. The threaded rod 130 is vertically arranged, and only the bottom end of the threaded rod 130 is rotatably connected to the inner wall of the sewage tank 120. A mating block 131 is provided at the lowest end of the intercepting net 122, and the threaded rod 130 is thread - connected to the mating block 131. During the rotation of the threaded rod 130, since the intercepting net 122 is circumferentially fixed in the sewage tank 120 as a whole, it will slide along the vertical direction as a whole. To facilitate the smoothness of the overall sliding, in this embodiment, the extension length of the threaded hole in the mating block 131 is at least one - tenth of the length of the threaded rod 130. And a metal lining (not shown in the figure) is embedded in the inner wall of the sliding groove 124, and at the same time, the sliding rod 123 is also made of metal material, so as to reduce the sliding resistance. At the same time, both ends of the intercepting net 122 in the tilt - extending direction are horizontally arranged. When the sliding rod 123 is stressed, it will be perpendicular to the horizontal part, and there is no possibility of deviation in the non - vertical direction, improving the smoothness of sliding.

[0038] Refer to Figure 6 , Figure 7, when the intercepting net 122 moves to the uppermost end, it is convenient to take out the intercepting net 122. In this embodiment, the matching block 131 is arranged to be detachably connected to the intercepting net 122. The matching block 131 penetrates the intercepting net 122 from top to bottom, and a base 132 extends from one side of the matching block 131 close to the bottom of the sewage tank 120. The base 132 will be attached to the lower side of the intercepting net 122 and is fixedly connected to the intercepting net 122 by bolts. When the intercepting net 122 moves to the uppermost side, the bolts are removed and the intercepting net 122 is separated from the sewage tank 120. At this time, the matching block 131 will still be connected to the threaded rod 130. After the treatment is completed, the two are connected in alignment, which is more convenient.

[0039] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A floating dock, characterized in that: The floating dock is moored by a starboard pile-holding device. The floating dock comprises a main hull (100). A pump room (1) is arranged on the starboard side of the main hull (100). The pump rooms (1) are evenly distributed in the front and rear compartments of the main hull (100). At least two ballast discharge pumps (2) and at least two seawater tanks (3) are arranged in each pump room (1). Each ballast discharge pump (2) controls five corresponding ballast tanks (20), and the two ballast discharge pumps (2) can serve as backup for each other through a remote-controlled butterfly valve. A sewage recovery system is also arranged in the main hull (100). When suction ballast is required, seawater is sequentially injected into each ballast tank through the seawater tank (3), the pipeline (5), the remote-controlled butterfly valve (4), the expansion joint (12), and the suction port (13).

2. A floating dock according to claim 1, characterized in that: The sewage recovery system has a specific structure as follows: at least two sewage tanks (110) are arranged in the main hull (100); a sewage tank (120) is arranged on the main hull (100); a grille (121) is arranged on the upper side of the sewage tank (120); an obliquely arranged interception net (122) is detachably mounted on the inner wall of the sewage tank (120); the lower side of the sewage tank (120) is connected to the sewage tank (110); and at least two water pumps are arranged in the sewage tank (110).

3. A floating dock according to claim 2, characterized in that: Slide bars (123) are provided at the four corners of the interception net (122), and a slide groove (124) for the slide bars (123) to be embedded and slide is vertically provided on the inner wall of the sewage tank (120).

4. A floating dock according to claim 2, characterized in that: The inner wall of the sewage tank (120) is provided with a driving component for driving the interception net (122) to move.

5. A floating dock according to claim 4, characterized in that: The driving assembly comprises a threaded rod (130) rotatably connected in the sewage tank (120); a matching block (131) is provided at the lowest end of the interception net (122); and the threaded rod (130) is threadably connected to the matching block (131).

6. A floating dock according to claim 5, characterized in that: The threaded hole in the matching block (131) has an extension length of at least one tenth of the length of the threaded rod (130).

7. A floating dock according to claim 6, characterized in that: The matching block (131) is detachably connected to the retention net (122).

8. A floating dock according to claim 7, characterized in that: The matching block (131) penetrates the retention net (122), and a base (132) extends from one side of the matching block (131) close to the bottom of the sewage tank (120), and the base (132) is connected to the retention net (122) by bolts.

9. A floating dock according to claim 1, characterized in that: The starboard pile holding device comprises a plate eye device (14) arranged on the starboard outer plate of the main hull (100), the plate eye device (14) being provided with a plurality of latch holes (15), and the plate eye device (14) being connected to an extended pile foundation (16) on the dock via the latch holes (15).

10. A floating dock according to claim 1, characterized in that: At least two generators are arranged on the main hull (100).

Images