Ship seawater supply device and use method

Abstract

The invention relates to a ship seawater supply device and a use method, a cabin seawater tank is provided with a high-position assembly and a low-position assembly, the cabin seawater tank is provided with a plurality of water supply control valves, the other end of each water supply control valve is connected with a seawater branch pipe, and the other side of the cabin seawater tank is provided with a flushing assembly and a drainage assembly; the seawater piping system is made of seawater corrosion resistant materials, and electrical isolation insulation assemblies are adopted when the seawater piping system is connected with the ship body or the engine room seawater tank. When a cooling device or system on a ship has a seawater supply demand, the corresponding water supply control valve and the seawater pump are opened, and seawater in the cabin seawater tank can be supplied to users through the seawater branch pipes; on one hand, the problem of corrosion leakage caused by the long seawater main pipe is solved, on the other hand, the cabin space is enlarged, the problem of insufficient cabin space caused by the occupation of the seawater main pipe is solved, and in addition, the problem that the ship seawater supply device is difficult to clean is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship auxiliary equipment, and in particular to a ship seawater supply device and a use method thereof. Background Art

[0002] The ship's seawater system is responsible for equipment cooling, fire fighting, attitude balance control and other tasks, and plays an extremely important role in ensuring navigation safety and the normal operation of important equipment. At present, the ship's seawater supply system generally adopts a design in which the left and right seabed doors are connected to the seawater main. The seawater is pumped through the grilles, seabed doors and the seawater main by the seawater pump to the cooling equipment or fire fighting, ballast and other systems on board.

[0003] The seawater main of the conventional seawater supply system runs through the entire ship width from port to starboard, that is, across the engine room, and is arranged on the inner bottom of the ship, occupying a large amount of engine room space; in addition, this type of seawater main is relatively long, and the seawater flow rate and flow rate in the pipe are high, which is very easy to cause erosion and corrosion problems at the elbows, branches, and reducers of the pipeline due to excessive flow rate and turbulence, directly affecting the reliability of the ship, piping and equipment performance, while greatly increasing the cost of ship maintenance, and significantly reducing the economy and safety reliability; for the cleaning method of the seawater supply device, the crew generally enters the device through the manhole cover for manual cleaning, which has problems such as large workload and difficulty for personnel to reach. Summary of the invention

[0004] Aiming at the technical problems that corrosion and leakage of seawater mains affect ship systems and equipment and cleaning of the device is difficult, as well as tight or even insufficient ship engine room space due to the layout of large seawater mains, a ship seawater supply device and its use method are proposed.

[0005] The technical solution of the present invention is: a ship seawater supply device, including a cabin seawater tank, the cabin seawater tank is a rectangular parallelepiped, a high-position component is provided on one side of the short side of the cabin seawater tank, a low-position component is provided on the short side of the cabin seawater tank away from the high-position component, a plurality of water supply components are evenly arranged on the side of the long side of the cabin seawater tank, and a flushing component and a drainage component are provided on the side of the long side of the cabin seawater tank.

[0006] Preferably, the water supply assembly includes a water supply control valve, and the engine room seawater tank is connected to multiple water supply control valves through single-sided flange welded seat plates respectively. In order to prevent galvanic corrosion of dissimilar metals, an insulating gasket is provided between the single-sided flange welded seat plate and the water supply control valve; the end of the water supply control valve away from the engine room seawater tank is connected to a seawater branch pipe, and the end of the seawater branch pipe away from the water supply control valve is connected to the inlet of a seawater pump, and the outlet of the seawater pump supplies cooling water to users through a seawater pipe, and the cooling water is supplied to users through the seawater branch pipe.

[0007] Preferably, a flushing water pipe is provided on the inner bottom surface of the engine room seawater tank, and a plurality of flushing holes are evenly provided on the bottom of the flushing water pipe, and the flushing assembly includes a flushing water control valve, one end of the flushing water control valve is connected to the seawater tank, and the end of the flushing water control valve away from the seawater tank is connected to the water inlet of the flushing pump through a short pipe, and the water outlet of the flushing pump is connected to the flushing pump outlet control valve through a U-shaped tube, and the end of the flushing pump outlet control valve away from the U-shaped tube is connected to the flushing water pipe;

[0008] Preferably, the drainage assembly includes a marine mud box, a suction port is provided at the bottom of the engine room seawater tank, the mud box is connected to the suction port through a short tube, the side of the mud box away from the suction port is connected to the control valve through a short tube, the end of the control valve away from the mud box is connected to the water inlet of the drainage pump through a short tube, the water outlet of the drainage pump is connected to the drainage pump outlet control valve through a short tube, and the end of the drainage pump outlet control valve away from the drainage pump is connected to the discharge pipe.

[0009] Preferably, the high-level component includes a high-level seawater master control valve, which is connected to the cabin seawater tank through a single-sided flange welded seat plate, an insulating gasket is provided between the single-sided flange welded seat plate and the high-level seawater master control valve, one end of the high-level seawater master control valve away from the cabin seawater tank is connected to the high-level seawater filter through a short pipe, one end of the high-level seawater filter away from the high-level seawater master control valve is connected to the high-level sea valve through a short pipe, one end of the high-level seawater filter away from the high-level seawater master control valve is connected to the high-level sea valve through a short pipe, one end of the high-level sea valve away from the high-level seawater filter is connected to the high-level seabed door through a single-sided flange welded seat plate, an insulating gasket is provided between the single-sided flange welded seat plate and the high-level sea valve, a high-level grille is provided on the bottom surface of the high-level seabed door, and the high-level seabed door is provided with a high-level anti-fouling and anti-corrosion electrode.

[0010] Preferably, the low-level component includes a low-level seawater master control valve, which is connected to the cabin seawater tank through a single-sided flange welded seat plate, an insulating gasket is provided between the single-sided flange welded seat plate and the low-level seawater master control valve, one end of the low-level seawater master control valve away from the cabin seawater tank is connected to the low-level seawater filter through a short pipe, one end of the low-level seawater filter away from the low-level seawater master control valve is connected to the low-level sea valve through a short pipe, one end of the low-level seawater filter away from the low-level seawater master control valve is connected to the low-level sea valve through a short pipe, one end of the low-level sea valve away from the low-level seawater filter is connected to the low-level seabed door through a single-sided flange welded seat plate, an insulating gasket is provided between the single-sided flange welded seat plate and the low-level sea valve, a low-level grille is provided on the bottom surface of the low-level seabed door, and the low-level seabed door is provided with a low-level anti-fouling and anti-corrosion electrode.

[0011] Preferably, the high-position sea valve comprises a high-position remote-controlled butterfly valve and a high-position hydraulic drive head, one end of the high-position remote-controlled butterfly valve is connected to a high-position seawater filter, and the other end is connected to a high-position seabed gate, and a high-position hydraulic drive head is provided on the drive assembly of the high-position remote-controlled butterfly valve, and the high-position hydraulic drive head is connected to a high-position hand-cranked pump station through two high-position hydraulic pipes;

[0012] The low-level sea valve comprises a low-level remote-controlled butterfly valve and a low-level hydraulic drive head. One end of the low-level remote-controlled butterfly valve is connected to a low-level seawater filter, and the other end is connected to a low-level seabed gate. A low-level hydraulic drive head is provided on the drive assembly of the low-level remote-controlled butterfly valve. The low-level hydraulic drive head is connected to a low-level hand-operated pump station through two low-level hydraulic pipes.

[0013] The high-level hand-operated pumping station and the low-level hand-operated pumping station are installed above the waterline of the ship's damaged cabin. When the ship is damaged and flooded, the crew can close the sea valve at the undamaged part of the ship.

[0014] Preferably, the interior of the engine room seawater tank is provided with longitudinal ribs and transverse ribs, the longitudinal ribs are provided with a plurality of longitudinal rib openings, the transverse ribs are provided with a plurality of transverse rib openings, and the opening areas of the longitudinal rib openings and the transverse rib openings are not less than the flow area of ​​the seawater inlet main pipe, so as to ensure the smooth flow of seawater in the engine room seawater tank;

[0015] Preferably, the longitudinal ribs and the transverse ribs are provided with anti-corrosion zinc blocks.

[0016] A method for using a ship seawater supply device, the steps are as follows:

[0017] S1, when the device draws seawater from the outside, the high-level seawater master control valve is opened, and the seawater in the ocean enters the engine room seawater tank for storage through the high-level grid, the high-level seabed door, the high-level seawater filter and the seawater short pipe. Similarly, the low-level seawater master control valve is opened, and the seawater in the ocean enters the engine room seawater tank for storage through the low-level grid, the low-level seabed door, the low-level seawater filter and the seawater short pipe. When the device is located in a shallow beach, in order to prevent a large amount of mud and impurities from the seabed from entering, only the high-level seawater master control valve is opened at this time, and the seawater in the ocean enters the engine room seawater tank for storage through the high-level grid, the high-level seabed door, the high-level seawater filter and the seawater short pipe.

[0018] S2, during normal water supply, when a cooling device or system on board has a demand for seawater supply, the corresponding water supply control valve and seawater pump are turned on, and the seawater in the engine room seawater tank can be supplied to each user;

[0019] S3, after the system has been working for a certain period of time, there will be sediments and aggregates such as silt and impurities at the bottom of the engine room seawater tank. When the engine room seawater tank needs to be cleaned, it needs to be regularly flushed with flushing water. The flushing water comes from the engine room seawater tank. At this time, the flushing water control valve, flushing pump, flushing pump outlet control valve, drainage suction control valve, drainage pump and drainage pump outlet control valve are opened at the same time. The flushing water will pass through the flushing water control valve, flushing pump and flushing pump outlet control valve through the flushing water pipe to flush the engine room seawater tank. At the same time, the bilge water containing silt and impurities is discharged to the side through the suction port, marine mud box, drainage suction control valve, drainage pump and the drainage pump outlet control valve through the bilge water suction pipe. The whole flushing process forms a circulation system for pumping water from the engine room seawater tank; the flushing pump can be used as a fire pump, and the drainage pump can be used as a bilge water pump in the engine room.

[0020] The beneficial effects of the present invention are as follows: the present invention cancels the conventional engine room seawater main that runs horizontally through the entire engine room, and replaces it with an engine room seawater tank type between the inner bottom plate and the outer plate of the ship. The two sides of the engine room seawater tank are connected to the seabed doors on both sides through short seawater pipes, which greatly shortens the length of the seawater main. According to the actual water demand of the equipment or system, the corresponding seawater control valve located on the seawater tank is opened, and seawater can be supplied to the target users on the ship through the suction of the seawater pump. On the one hand, the corrosion and leakage problem caused by the long seawater main is solved, and on the other hand, the engine room space is enlarged, solving the problem of insufficient engine room space caused by the occupation of the seawater main. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view schematic diagram of the ship seawater supply device of the present invention;

[0022] Figure 2 This is a longitudinal section of the engine room seawater tank flushing pipe of the present invention;

[0023] Figure 3 It is a right side schematic diagram of the ship seawater supply device of the present invention;

[0024] Figure 4 for Figure 1 BB section diagram in;

[0025] Figure 5 for Figure 1 AA section view in.

[0026] In the figure, the component names corresponding to the reference numerals are as follows:

[0027] 1. Engine room seawater tank; 11. Longitudinal ribs; 111. Longitudinal rib openings; 12. Transverse ribs; 121. Transverse rib openings; 13. Single-sided flange welded seat plate; 14. Suction port; 15. Flushing water pipe; 151. Flushing hole; 16. Anti-corrosion zinc block; 2. High-level components; 21. High-level seawater master control valve; 22. High-level seawater filter; 23. High-level sea valve; 231. High-level remote control butterfly valve; 232. High-level hydraulic drive head; 233. High-level hydraulic pipe; 234. High-level hand-cranked pump station; 24. High-level seabed door; 241. High-level grille; 242. High-level anti-fouling and anti-corrosion electrode; 3. Low-level components; 31 , low-level seawater master control valve; 32. Low-level seawater filter; 33. Low-level sea valve; 331. Low-level remote-controlled butterfly valve; 332. Low-level hydraulic drive head; 333. Low-level hydraulic pipe; 334. Low-level hand-operated pump station; 34. Low-level seabed gate; 341. Low-level grille; 342. Low-level anti-fouling and anti-corrosion electrode; 4. Flushing assembly; 41. Flushing water control valve; 42. Flushing pump; 43. Flushing pump outlet control valve; 5. Drainage assembly; 51. Mud box; 52. Control valve; 53. Drainage pump; 54. Drainage pump outlet control valve; 6. Water supply assembly; 61. Water supply control valve; 62. Seawater branch pipe; 63. Seawater pump. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0029] refer to Figure 1 As shown, the present invention provides a ship seawater supply device, including a cabin seawater tank 1, the cabin seawater tank 1 is a rectangular parallelepiped, a high-position component 2 is provided on one side of the short side of the cabin seawater tank 1, a low-position component 3 is provided on the short side of the cabin seawater tank 1 away from the high-position component 2, a plurality of water supply components 6 are evenly arranged on the side of the long side of the cabin seawater tank 1, and a flushing component 4 and a drainage component 5 are provided on the side of the long side of the cabin seawater tank 1;

[0030] The engine room seawater tank 1 is arranged between the inner bottom plate and the outer plate of the ship. The engine room seawater tank 1 is made of the same material as the hull, and all seawater pipes are made of seawater corrosion-resistant materials. In order to prevent galvanic corrosion of dissimilar metals, electrical isolation and insulation components are used when the seawater pipes are connected to the hull or the engine room seawater tank 1.

[0031] The water supply assembly 6 includes a water supply control valve 61. The engine room seawater tank 1 is connected to a plurality of water supply control valves 61 through a single-sided flange welded seat plate 13. To prevent galvanic corrosion of dissimilar metals, an insulating gasket is provided between the single-sided flange welded seat plate 13 and the water supply control valve 61. One end of the water supply control valve 61 away from the engine room seawater tank 1 is connected to a seawater branch pipe 62. One end of the seawater branch pipe 62 away from the water supply control valve 61 is connected to the inlet of a seawater pump 63. The outlet of the seawater pump 63 supplies cooling water to users through a seawater pipe, and supplies cooling water to users through the seawater branch pipe 62.

[0032] A flushing water pipe 15 is arranged around the inner bottom surface of the engine room seawater tank 1, and the flushing assembly 4 includes a flushing water control valve 41, one end of the flushing water control valve 41 is connected to the seawater tank 1, and water is sucked from the seawater tank 1, and the end of the flushing water control valve 41 away from the seawater tank 1 is connected to the water inlet of the flushing pump 42 through a short pipe, and the water outlet of the flushing pump 42 is connected to the flushing pump outlet control valve 43 through a U-shaped pipe, and the end of the flushing pump outlet control valve 43 away from the U-shaped pipe is connected to the flushing water pipe 15;

[0033] The drainage assembly 5 includes a marine mud box 51, a suction port 14 is provided at the bottom of the engine room seawater tank 1, and the distance between the suction port 14 and the bottom plate of the engine room seawater tank 1 is not more than 50 mm. The mud box 51 is connected to the suction port 14 through a short pipe, and the side of the mud box 51 away from the suction port 14 is connected to the control valve 52 through a short pipe, and the end of the control valve 52 away from the mud box 51 is connected to the water inlet of the drainage pump 53 through a short pipe, and the water outlet of the drainage pump 53 is connected to the drainage pump outlet control valve 54 through a short pipe, and the end of the drainage pump outlet control valve 54 away from the drainage pump 53 is connected to the discharge pipe to discharge water overboard;

[0034] refer to Figure 3 As shown, two rows of flushing holes 151 are evenly and symmetrically arranged at the bottom of the flushing water pipe 15 at the long sides of both sides of the engine room seawater tank 1. The flushing holes 151 are openings in the lower half of the flushing water pipe 15 body. In this example, the angle between the center lines of the symmetrical flushing holes 151 is 90°. The water outlet direction of the flushing holes 151 can achieve maximum coverage of the bottom of the engine room seawater tank 1, and the mud and sand impurities at the bottom of the engine room seawater tank 1 can be flushed as evenly as possible.

[0035] refer to Figure 1 , 2As shown, the high-level component 2 includes a high-level seawater master control valve 21, which is connected to the engine room seawater tank 1 through a single-sided flange welded seat plate 13. To prevent galvanic corrosion of dissimilar metals, an insulating gasket is provided between the single-sided flange welded seat plate 13 and the high-level seawater master control valve 21. The end of the high-level seawater master control valve 21 away from the engine room seawater tank 1 is connected to the high-level seawater filter 22 through a short pipe, and the end of the high-level seawater filter 22 away from the high-level seawater master control valve 21 is connected to the high-level sea valve 23 through a short pipe. The end of the high-level sea valve 23 away from the high-level seawater filter 22 is connected to the high-level sea valve 23 through a short pipe. The end of the high-level sea valve 23 away from the high-level seawater filter 22 is connected to the high-level seabed door 24 through the single-sided flange welded seat plate 13. To prevent galvanic corrosion of dissimilar metals, an insulating gasket is provided between the single-sided flange welded seat plate 13 and the high-level sea valve 23. The bottom surface of the high-level seabed door 24 is provided with a high-level grille 241, and the high-level seabed door 24 is provided with a high-level anti-fouling and anti-corrosion electrode 242;

[0036] The low-level component 3 includes a low-level seawater master control valve 31, which is connected to the cabin seawater tank 1 through a single-sided flange welded seat plate 13. To prevent galvanic corrosion of dissimilar metals, an insulating gasket is provided between the single-sided flange welded seat plate 13 and the low-level seawater master control valve 31. The end of the low-level seawater master control valve 31 away from the cabin seawater tank 1 is connected to the low-level seawater filter 32 through a short pipe, and the end of the low-level seawater filter 32 away from the low-level seawater master control valve 31 is connected to the low-level sea valve 33 through a short pipe. The end of the low-level sea valve 33 away from the low-level seawater filter 32 is connected to the low-level sea valve 33 through a short pipe. The end of the low-level sea valve 33 away from the low-level seawater filter 32 is connected to the low-level seabed door 34 through the single-sided flange welded seat plate 13. To prevent galvanic corrosion of dissimilar metals, an insulating gasket is provided between the single-sided flange welded seat plate 13 and the low-level sea valve 33. The bottom surface of the low-level seabed door 34 is provided with a low-level grille 341, and the low-level seabed door 34 is provided with a low-level anti-fouling and anti-corrosion electrode 342;

[0037] The high-position anti-fouling and anti-corrosion electrode 242 and the low-position anti-fouling and anti-corrosion electrode 342 include one anti-fouling electrode (copper-based) and one anti-corrosion electrode (iron-based), which are used for anti-fouling and anti-corrosion protection of the seawater system, and can effectively reduce and prevent electrochemical corrosion of the seawater pipeline and biological corrosion caused by the attachment of marine organisms, and can also prevent marine organisms from attaching and growing in the seawater pipeline;

[0038] The high-position sea valve 23 includes a high-position remote-controlled butterfly valve 231 and a high-position hydraulic drive head 232. One end of the high-position remote-controlled butterfly valve 231 is connected to the high-position seawater filter 22, and the other end is connected to the high-position seabed gate 24. The high-position remote-controlled butterfly valve 231 is provided with a high-position hydraulic drive head 232 on the drive assembly. The high-position hydraulic drive head 232 is connected to the high-position hand-operated pump station 234 through two high-position hydraulic pipes 233.

[0039] Similarly, the low-level sea valve 33 includes a low-level remote-controlled butterfly valve 331 and a low-level hydraulic drive head 332. One end of the low-level remote-controlled butterfly valve 331 is connected to the low-level seawater filter 32, and the other end is connected to the low-level seabed gate 34. The low-level remote-controlled butterfly valve 331 is provided with a low-level hydraulic drive head 332 on the drive assembly. The low-level hydraulic drive head 332 is connected to the low-level hand-operated pump station 334 through two low-level hydraulic pipes 333.

[0040] The high-position remote-controlled butterfly valve 231, the high-position hydraulic drive head 232, the low-position remote-controlled butterfly valve 331 and the low-position hydraulic drive head 332 are usually in a normally open state; the high-position hand-operated pump station 234 and the low-position hand-operated pump station 334 are arranged above the damaged waterline of the ship. When the ship is damaged and flooded, the crew can close the sea valve at the undamaged part of the ship. The high-position hand-operated pump station 234 can provide high-pressure oil of not less than 10MPa through the high-position hydraulic pipe 233 and the low-position hand-operated pump station 334 can provide high-pressure oil of not less than 10MPa through the low-position hydraulic pipe 333 to realize the remote switch operation of the high-position sea valve 23 and the low-position sea valve 33; for the high-position sea valve 23 and the low-position sea valve 33, the high-position hand-operated pump station 234 and the low-position hand-operated pump station 334 can provide high-pressure oil of not less than 10MPa through the high-position hydraulic pipe 233 and the low-position hand-operated pump station 334 can provide high-pressure oil of not less than 10MPa through the low-position hydraulic pipe 333. The opening and closing indication of the low-position sea valve 33 has both local display and remote display functions. The high-position hydraulic drive head 232 and the low-position hydraulic drive head 332 are provided with local display devices, which can realize the local display function on the high-position hydraulic drive head 232 and the low-position hydraulic drive head 332. The electric control boxes to which the high-position hand-cranked pump station 234 and the low-position hand-cranked pump station 334 are respectively connected are provided with remote display devices, which realize the remote display function on the electric control boxes to which the high-position hand-cranked pump station 234 and the low-position hand-cranked pump station 334 are respectively connected. The opening and closing indication signal can also be transmitted to the electromechanical control room of the ship for display;

[0041] refer to Figure 4 , 5 As shown, the interior of the engine room seawater tank 1 is provided with longitudinal ribs 11 and transverse ribs 12, which are connected by welding. The longitudinal ribs 11 are provided with a plurality of longitudinal rib openings 111, and the transverse ribs 12 are provided with a plurality of transverse rib openings 121. The opening areas of the longitudinal rib openings 111 and the transverse rib openings 121 are not less than the flow area of ​​the seawater inlet main pipe, so as to ensure the smooth flow of seawater in the engine room seawater tank 1; the engine room seawater tank 1 is provided with anti-corrosion zinc blocks 16 on the longitudinal ribs 11 and the transverse ribs 12, and the anti-corrosion zinc blocks 16 are connected to the longitudinal ribs 11 and the transverse ribs 12 through flange welding seat plates, so as to realize the sacrificial anode cathodic protection function of the engine room seawater tank 1;

[0042] The water supply method applied to the ship seawater supply device as described above comprises the following steps:

[0043] S1, when the device draws seawater from the outside, the high-level seawater master control valve 21 is opened, and the seawater in the ocean enters the engine room seawater tank 1 for storage through the high-level grid 241, the high-level seabed door 24, the high-level seawater filter 22 and the seawater short pipe. Similarly, the low-level seawater master control valve 31 is opened, and the seawater in the ocean enters the engine room seawater tank 1 for storage through the low-level grid 341, the low-level seabed door 34, the low-level seawater filter 32 and the seawater short pipe; when the device is located in a shallow beach, in order to prevent a large amount of mud and impurities from the seabed from entering, at this time, only the high-level seawater master control valve 21 is opened, and the seawater in the ocean enters the engine room seawater tank 1 for storage through the high-level grid 241, the high-level seabed door 24, the high-level seawater filter 22 and the seawater short pipe;

[0044] S2, during normal water supply, when a cooling device or system on board has a demand for seawater supply, the corresponding water supply control valve 61 and the seawater pump 63 are turned on, and the seawater in the engine room seawater tank 1 can be supplied to each user;

[0045] S3, after the system has been working for a certain period of time, there will be sediment and impurities at the bottom of the engine room seawater tank 1. When the engine room seawater tank 1 needs to be cleaned, it needs to be regularly flushed with high-pressure water. The engine room seawater tank 1 can be flushed with high-pressure water with a pressure of not less than 1MPa. The flushing water comes from the engine room seawater tank 1. At this time, the flushing water control valve 41, the flushing pump 42, the flushing pump outlet control valve 43, the drainage suction control valve 52, the drainage pump 53 and the drainage pump outlet control valve 54 are opened at the same time, and the flushing water will flow through The engine room seawater tank 1 is flushed through the flushing water control valve 41, the flushing pump 42 and the flushing pump outlet control valve 43 via the flushing water pipe, and at the same time, the bilge water containing mud and sand impurities is discharged to the overboard through the suction port 14, the marine mud box 51, the drainage suction control valve 52, the drainage pump 53 and the drainage pump outlet control valve 54 via the bilge water suction pipe. The whole flushing process forms a circulation system for pumping water and discharging water from the engine room seawater tank 1; the flushing pump 42 can be used as a fire pump, and the drainage pump 53 can be used as an engine room bilge water pump.

[0046] The beneficial effects are as follows: the present invention cancels the conventional engine room seawater main that runs horizontally through the entire engine room, and replaces it with an engine room seawater tank 1 between the inner bottom plate and the outer plate of the ship. The two sides of the engine room seawater tank 1 are connected to the seabed doors on both sides through short seawater pipes, which greatly shortens the length of the seawater main. According to the actual water demand of the equipment or system, the corresponding seawater control valve located on the seawater tank is opened, and the seawater can be supplied to the target users on the ship through the suction of the seawater pump. On the one hand, the corrosion and leakage problem caused by the long seawater main is solved, and on the other hand, the engine room space is enlarged, which solves the problem of insufficient engine room space caused by the occupation of the seawater main. In addition, the cleaning process of the seawater tank is a self-circulating method, which solves the problem of difficult manual operation.

[0047] It should be noted that the orientations or positional relationships indicated by the above-mentioned terms "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. "Multiple" means two or more. "Installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection.

[0048] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A ship seawater supply device, characterized in that: The invention comprises a cabin seawater tank (1), wherein the cabin seawater tank (1) is a rectangular parallelepiped, a high-position component (2) is provided on one side of a short side of the cabin seawater tank (1), a low-position component (3) is provided on one side of a short side of the cabin seawater tank (1) away from the high-position component (2), a plurality of water supply components (6) are evenly arranged on the side of the long side of the cabin seawater tank (1), and a flushing component (4) and a drainage component (5) are provided on the side of the long side of the cabin seawater tank (1).

2. The ship seawater supply device according to claim 1, characterized in that: The water supply assembly (6) comprises a water supply control valve (61); the engine room seawater tank (1) and the plurality of water supply control valves (61) are respectively connected via a single-sided flange welded seat plate (13); to prevent galvanic corrosion of dissimilar metals, an insulating gasket is provided between the single-sided flange welded seat plate (13) and the water supply control valve (61); one end of the water supply control valve (61) away from the engine room seawater tank (1) is connected to a seawater branch pipe (62); one end of the seawater branch pipe (62) away from the water supply control valve (61) is connected to an inlet of a seawater pump (63); the outlet of the seawater pump (63) supplies cooling water to a user via a seawater pipe, and the cooling water is supplied to the user via the seawater branch pipe (62).

3. The ship seawater supply device according to claim 1, characterized in that: The inner bottom surface of the engine room seawater tank (1) is provided with a flushing water pipe (15), and a plurality of flushing holes (151) are evenly arranged at the bottom of the flushing water pipe (15). The flushing assembly (4) comprises a flushing water control valve (41), one end of the flushing water control valve (41) is connected to the seawater tank (1), the end of the flushing water control valve (41) away from the seawater tank (1) is connected to the water inlet of a flushing pump (42) through a short pipe, the water outlet of the flushing pump (42) is connected to the flushing pump outlet control valve (43) through a U-shaped pipe, and the end of the flushing pump outlet control valve (43) away from the U-shaped pipe is connected to the flushing water pipe (15).

4. The ship seawater supply device according to claim 1, characterized in that: The drainage assembly (5) comprises a marine mud box (51), a suction port (14) is provided at the bottom of the engine room seawater tank (1), the mud box (51) is connected to the suction port (14) via a short pipe, a side of the mud box (51) away from the suction port (14) is connected to a control valve (52) via a short pipe, an end of the control valve (52) away from the mud box (51) is connected to a water inlet of a drainage pump (53) via a short pipe, a water outlet of the drainage pump (53) is connected to a drainage pump outlet control valve (54) via a short pipe, and an end of the drainage pump outlet control valve (54) away from the drainage pump (53) is connected to a discharge pipe.

5. The ship seawater supply device according to claim 1, characterized in that: The high-level component (2) comprises a high-level seawater master control valve (21), the high-level seawater master control valve (21) is connected to the engine room seawater tank (1) via a single-sided flange welded seat plate (13), an insulating gasket is provided between the single-sided flange welded seat plate (13) and the high-level seawater master control valve (21), one end of the high-level seawater master control valve (21) away from the engine room seawater tank (1) is connected to the high-level seawater filter (22) via a short pipe, and the high-level seawater filter (22) is away from the high-level seawater master control valve. One end of the high-position sea valve (21) is connected to the high-position sea valve (23) through a short pipe, and one end of the high-position sea valve (23) away from the high-position seawater filter (22) is connected to the high-position seabed door (24) through a single-sided flange welded seat plate (13), an insulating gasket is provided between the single-sided flange welded seat plate (13) and the high-position sea valve (23), a high-position grille (241) is provided on the bottom surface of the high-position seabed door (24), and a high-position anti-fouling and anti-corrosion electrode (242) is provided on the high-position seabed door (24).

6. The ship seawater supply device according to claim 5, characterized in that: The low-level component (3) comprises a low-level seawater master control valve (31), the low-level seawater master control valve (31) is connected to the engine room seawater tank (1) via a single-sided flange welded seat plate (13), an insulating gasket is provided between the single-sided flange welded seat plate (13) and the low-level seawater master control valve (31), one end of the low-level seawater master control valve (31) away from the engine room seawater tank (1) is connected to a low-level seawater filter (32) via a short pipe, and the low-level seawater filter (32) is away from the low-level seawater master control valve One end of the low-position sea valve (31) is connected to the low-position sea valve (33) through a short pipe, and one end of the low-position sea valve (33) away from the low-position seawater filter (32) is connected to the low-position seabed door (34) through a single-sided flange welded seat plate (13), an insulating gasket is provided between the single-sided flange welded seat plate (13) and the low-position sea valve (33), a low-position grille (341) is provided on the bottom surface of the low-position seabed door (34), and the low-position seabed door (34) is provided with a low-position anti-fouling and anti-corrosion electrode (342).

7. The ship seawater supply device according to claim 6, characterized in that: The high-position sea valve (23) comprises a high-position remote-controlled butterfly valve (231) and a high-position hydraulic drive head (232); one end of the high-position remote-controlled butterfly valve (231) is connected to the high-position seawater filter (22), and the other end is connected to the high-position seabed gate (24); a high-position hydraulic drive head (232) is provided on the drive assembly of the high-position remote-controlled butterfly valve (231); and the high-position hydraulic drive head (232) is connected to the high-position hand-operated pump station (234) via two high-position hydraulic pipes (233); The low-level sea valve (33) comprises a low-level remote-controlled butterfly valve (331) and a low-level hydraulic drive head (332); one end of the low-level remote-controlled butterfly valve (331) is connected to the low-level seawater filter (32), and the other end is connected to the low-level seabed gate (34); a low-level hydraulic drive head (332) is provided on the drive assembly of the low-level remote-controlled butterfly valve (331); and the low-level hydraulic drive head (332) is connected to the low-level hand-operated pump station (334) through two low-level hydraulic pipes (333); The high-position hand-operated pump station (234) and the low-position hand-operated pump station (334) are arranged above the damaged waterline of the ship. When the ship is damaged and flooded, the crew can close the sea valve at the undamaged part of the ship.

8. The ship seawater supply device according to claim 1, characterized in that: The engine room seawater tank (1) is provided with longitudinal ribs (11) and transverse ribs (12) inside, the longitudinal ribs (11) are provided with a plurality of longitudinal rib openings (111), the transverse ribs (12) are provided with a plurality of transverse rib openings (121), and the opening areas of the longitudinal rib openings (111) and the transverse rib openings (121) are not less than the flow area of ​​the seawater inlet main pipe, so as to ensure that the seawater can flow smoothly in the engine room seawater tank (1).

9. The ship seawater supply device according to claim 8, characterized in that: The longitudinal ribs (11) and the transverse ribs (12) are provided with anti-corrosion zinc blocks (16).

10. A method for using the ship seawater supply device according to any one of claims 1 to 9, characterized in that: Here are the steps: S1, when the device draws seawater from the outside, the high-level seawater master control valve (21) is opened, and the seawater in the ocean passes through the high-level grid (241), the high-level seabed door (24), the high-level seawater filter (22) and the seawater short pipe to enter the engine room seawater tank (1) for storage. Similarly, the low-level seawater master control valve (31) is opened, and the seawater in the ocean passes through the low-level grid (341), the low-level seabed door (34), the low-level seawater filter (32) and the seawater short pipe to enter the engine room seawater tank (1) for storage. When the device is located in a shoal, in order to prevent a large amount of mud and sand impurities from the seabed from entering, only the high-level seawater master control valve (21) is opened at this time, and the seawater in the ocean passes through the high-level grid (241), the high-level seabed door (24), the high-level seawater filter (22) and the seawater short pipe to enter the engine room seawater tank (1) for storage; S2, during normal water supply, when a cooling device or system on board has a demand for seawater supply, the corresponding water supply control valve (61) and the seawater pump (63) are opened, and the seawater in the engine room seawater tank (1) can be supplied to various users; S3, after the system has been in operation for a certain period of time, sediment and impurities will accumulate at the bottom of the engine room seawater tank (1). When the engine room seawater tank (1) needs to be cleaned, it needs to be regularly flushed with flushing water. The flushing water comes from the engine room seawater tank (1). At this time, the flushing water control valve (41), the flushing pump (42), the flushing pump outlet control valve (43), the drainage suction control valve (52), the drainage pump (53) and the drainage pump outlet control valve (54) are opened at the same time. The flushing water will flow through the flushing water control valve (41), the flushing pump (42), the flushing pump outlet control valve (43), the drainage suction control valve (52), the drainage pump (53) and the drainage pump outlet control valve (54). The pump (42) and the flushing pump outlet control valve (43) flush the engine room seawater tank (1) through the flushing water pipe. At the same time, the bilge water containing mud and sand impurities is discharged to the side of the ship through the suction port (14), the ship mud box (51), the drainage suction control valve (52), the drainage pump (53) and the drainage pump outlet control valve (54) through the bilge water suction pipe. The entire flushing process forms a circulation system for pumping water and discharging water from the engine room seawater tank (1). The flushing pump (42) can be used as a fire pump, and the drainage pump (53) can be used as an engine room bilge water pump.

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