CN211139567U - Ship cabin washing water discharge system - Google Patents

Abstract

The utility model discloses a boats and ships wash-cabin water discharge system. The system comprises suction ports arranged at the bottom side of the oil tank, each suction port is connected with an outlet pipe, an isolation stop valve is arranged on the outlet pipe, the isolation stop valve is connected with a roundabout pipe, the top of the roundabout pipe is arranged above the oil liquid level in the oil tank, an isolation valve is arranged at the top of the roundabout pipe, a first water injection pipe and a second water injection pipe are arranged on the two sides of the isolation valve respectively, a first water injection valve and a second water injection valve are arranged on the first water injection pipe and the second water injection pipe respectively, and the roundabout pipe is connected with a sweeping pump through a pipeline. The utility model effectively prevents the pollution and waste of goods when the valve in the tank washing water discharge pipeline is not closed tightly due to faults or leaks by arranging the circuitous pipe, and can prolong the allowable operation time of the discharge pump by replenishing water through the water injection pipe when the liquid level of the tank washing water is lower, thereby avoiding excessive residual tank washing water in the oil tank; and the service time of the fire pump is reduced, and the safety is improved.

Description

Ship cabin washing water discharge system

Technical Field

The invention relates to the field of ship tank washing water discharge systems, in particular to a ship tank washing water discharge system.

Background

When the ship oil tank stores fuel oil, the inner wall of the oil tank is polluted by impurities in the fuel oil, particularly the pollution of crude oil to the oil tank is particularly serious, the impurities are attached to the tank wall and the tank bottom and need to be cleaned manually, and tank cleaning water can be generated in the cleaning operation. The existing cabin washing water discharge has certain defects, firstly, if the high-speed large-flow water flow generated by the fire pump is adopted on 2 rounds of southern cleaning to drive the jet pump to discharge the cabin washing water in the oil cabin, the service life of the cabin washing water can be lost due to the fact that the fire pump is an emergency device and is frequently used, and potential safety hazards exist. Secondly, when the oil tank stores fuel, such as the valve on the discharge system is not closed tightly, the fuel can flow into other chambers connected with the inlet of the discharge pump or the outlet of the discharge pump through the discharge pipe system, and the cargo is leaked and wasted.

Disclosure of Invention

The invention aims to provide a ship cabin washing water discharge system aiming at the defects in the prior art.

In order to achieve the purpose, the invention provides a ship cabin washing water discharge system which comprises suction ports arranged at the bottom side of each oil cabin, wherein each suction port is connected with a cabin outlet pipe, each cabin outlet pipe is provided with an isolation stop valve, the isolation stop valves are respectively connected with a roundabout pipe through pipelines, the tops of the roundabout pipes are arranged above the oil liquid level in the oil cabin, the tops of the roundabout pipes are provided with an isolation valve, a first water injection pipe and a second water injection pipe, the first water injection pipe and the second water injection pipe are respectively arranged at two sides of the isolation valve, the first water injection pipe and the second water injection pipe are respectively provided with a first water injection valve and a second water injection valve, the roundabout pipes are connected with a cabin cleaning pump through pipelines, and the inlet side and the outlet side of the cabin cleaning pump are respectively provided with an inlet stop valve and an outlet stop valve.

Furthermore, two lower ends of the circuitous pipe are respectively connected with a single-phase stop valve.

Further, the isolation valve is a planar valve.

Further, the cabin sweeping pump is a screw pump.

Further, the circuitous pipe is in an inverted U shape.

Further, the top of the detour pipe is arranged at the position of 96% of the height of the oil tank.

Furthermore, two lower ends of the circuitous pipe are respectively connected with a residue discharge pipe, and a residue discharge valve is arranged on the residue discharge pipe.

Has the advantages that: by arranging the circuitous pipes, the invention effectively prevents the fuel oil in the oil tank from leaking to the discharge pump or other cabins connected with the discharge pump through the discharge pipeline when the valve in the tank washing water discharge pipeline is not closed tightly or leaks due to faults, thereby avoiding the pollution and waste of goods; and the service time of the fire pump is reduced, and the safety is improved.

Drawings

Fig. 1 is a schematic structural view of a ship tank-washing water discharge system according to an embodiment of the present invention.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a ship tank-washing water discharge system, which includes suction ports disposed at the bottom upper side in each tank, and taking two tanks, i.e., a port tank and a starboard tank, as an example, the suction ports include a port suction port 2 disposed in the port tank 1 and a starboard suction port 4 disposed in the starboard tank 3, the port suction port 2 is connected to a port tank outlet pipe 5, the starboard tank outlet pipe 4 is connected to a starboard tank outlet pipe 6, the port tank outlet pipe 5 and the starboard tank outlet pipe 6 respectively penetrate through bulkheads of the port tank 1 and the starboard tank 3 to extend outside, the port tank outlet pipe 5 is provided with an isolation stop valve V1, the starboard tank outlet pipe 6 is provided with an isolation stop valve V2, the isolation stop valve V1 and the isolation stop valve V2 are respectively connected to a bypass pipe 7 through pipelines, and the bypass pipe is preferably provided in an inverted U shape. The top of the detour pipe 7 is provided above the oil level in the port oil tank 1 and the starboard oil tank 3. The top of the highest detour pipe 7 is provided with an isolation valve V5, a first water injection pipe 8 and a second water injection pipe 9, wherein the isolation valve V5 preferably adopts a plane valve. First water injection pipe 8 and second water injection pipe 9 set up the both sides at isolating valve V5 respectively, be equipped with first water injection valve V3 and second water injection valve V4 on first water injection pipe 8 and second water injection pipe 9 respectively, detour pipe 7 has sweep cabin pump P1 through the pipe connection, it preferably adopts the screw pump to sweep cabin pump P1, be equipped with import stop valve V6 and export stop valve V7 respectively at the inlet side and the outlet side of sweeping cabin pump P1, export stop valve V7 passes through pipeline connection bilge water tank and outboard, do not relate to this partial improvement, no longer describe repeatedly. In order to prevent the back flow of the tank-washing water entering the bypass pipe 7, a single-phase stop valve V8 and a single-phase stop valve V9 are connected to both lower ends of the bypass pipe 7.

In general, the maximum storage oil amount allowable for the cargo tank is 96% of the height from the liquid level to the cargo tank, and therefore, it is preferable to set the top of the detour pipe 7 at a position 96% of the height of the cargo tank, and in the case of the modification of the southern line 2, the height of the cargo tank is about 5.7m, and the top of the detour pipe 7 is 5.47m, under which the cargo tank does not leak to the inlet side of the scavenging pump P1 even if the isolation cut-off valve V1 and the isolation cut-off valve V2 or the single cut-off valve V8 are not closed tightly. The remaining space on the upper side of the detour pipe 7 can meet the installation requirements of the isolation valve V5, the first water injection pipe 8 and the second water injection pipe 9. After cabin washing water is discharged and before cabin washing operation, in order to prevent cabin washing water and fuel oil from remaining in the piping system, a residue discharge pipe 10 and a residue discharge pipe 11 are respectively connected to the two lower ends of the detour pipe 7, a residue discharge valve V10 is arranged on the residue discharge pipe 10, and a residue discharge valve V11 is arranged on the residue discharge pipe 11.

Before the cabin washing begins, the residual discharge valve V10 can be opened to discharge fuel possibly leaked through the isolating stop valve V1 and the isolating stop valve V2, and waste is avoided. Then the residue discharge valve V10 is closed, other valves in the discharge loop are opened, water is injected into the bypass pipe 7 through the first water injection pipe 8 and the second water injection pipe 9, the phenomenon that the cabin washing water is dry-rotated before reaching the discharge pump P1 is avoided, the cabin washing water can be discharged by starting the discharge pump P1, when the water level in the cabin is low, the cabin washing water and air in the cabin can enter the suction port together, in order to prevent the phenomenon that the temperature is increased due to the fact that the air sucked from the suction port of the discharge pump P1 is similar to dry-rotation phenomenon, a proper amount of water can be introduced through the first water injection pipe 8 and the second water injection pipe 9, the phenomenon that the temperature of the discharge pump P1 is too high and is blocked is avoided until the cabin washing water is discharged completely. After the tank washing water is discharged, residual tank washing water can be discharged by opening the residual discharge valve V10 and the residual discharge valve V11, and then the residual discharge valve V10 and the residual discharge valve V11 are closed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to those of ordinary skill in the art. Without departing from the principle of the invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the scope of the invention.

Claims (7)

1. The utility model provides a boats and ships wash-cabin water discharge system, its characterized in that, including setting up the suction inlet in each tank bottom side, each suction inlet is connected with out the cabin pipe, be equipped with isolation stop valve on the out-of-cabin pipe, isolation stop valve has circuitous pipe through the pipe connection respectively, the top setting of circuitous pipe is more than the oil liquid level in the tank, the top of circuitous pipe is equipped with isolation valve, first water injection pipe and second water injection pipe set up the both sides at the isolation valve respectively, be equipped with first water injection valve and second water injection valve on first water injection pipe and the second water injection pipe respectively, circuitous pipe has the scavenge pump through the pipe connection, the import side and the outlet side of scavenge pump are equipped with import stop valve and export stop valve respectively.

2. The marine vessel wash tank water drainage system according to claim 1, wherein a single-phase stop valve is connected to each of both lower ends of the detour pipe.

3. The marine wash tank water drain system of claim 1, wherein the isolation valve is a planar valve.

4. The marine wash tank water drainage system of claim 2, wherein the scavenge pump is a screw pump.

5. The marine wash tank water drainage system of claim 1, wherein the circuitous pipe is in the shape of an inverted U.

6. The marine wash tank water drainage system of claim 1, wherein the top of the circuitous pipe is disposed at a location 96% of the tank height.

7. The water discharge system for ship washing tank according to claim 1, wherein a residual discharge pipe is connected to each of two lower ends of the detour pipe, and a residual discharge valve is disposed on the residual discharge pipe.

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