A multi-functional water supply system for a floating platform

Abstract

The application discloses a multifunctional water supply system for a floating platform and relates to the technical field of ocean engineering. The multifunctional water supply system comprises two water tanks which are arranged independently on the bottom side of a main deck. The bottom end of each water tank is provided with the terminal end of a shared water suction pipe and a fire water pump water suction pipe. The first end of the shared water suction pipe is connected to the water inlet of a production water pump and the water inlet of a living water pump which are fixed on the main deck. The first end of the fire water pump water suction pipe is connected to the water inlet of a fire water pump which is installed on the main deck. The water inlet of the fire water pump is communicated with the water inlets of the production water pump and the living water pump through a pipeline which is provided with a one-way valve and a ball valve. The multifunctional water supply system can save the design and construction cost of a ship engine room, reduce the difficulty of equipment maintenance and repair, and ensure the safety of shared water sources for various users such as production water, living water and fire water.

Description

Technical Field

[0001] The present invention relates to the field of marine engineering technology, and in particular to a multifunctional water supply system for a floating platform. Background Art

[0002] Floating production platforms, living platforms, or other aquaculture platforms are equipped with freshwater tanks and corresponding freshwater pump systems to meet the needs of various production and living water users. For platforms equipped with high-pressure water mist firefighting systems, corresponding firefighting water systems are also required.

[0003] The current common approach to designing the entire system is to place the water tank below deck, with all water pumps located on the inner deck of the engine room near the height of the tank floor, and to utilize backflow to ensure the normal operation of the water pumps. For the fire water system, two approaches are commonly used: 1) setting up an independent fire water tank; 2) combining the fire water tank with other water tanks, but requiring the water intakes of other users' pumps to be located above the safe water level to ensure sufficient fire water storage.

[0004] Systems utilizing independent fire water tanks require additional fire water tanks, increasing the cost of structural design and construction. Systems combining fire water tanks with other water tanks, however, cannot be completely emptied or stripped due to the elevated height of the pump intakes for the other users. Stripping operations require the use of fire water pumps, which poses safety risks, or the use of temporary stripping pumps, increasing both operational complexity and investment costs. Furthermore, regardless of the method, since the pumps are installed in the engine room, maintenance and inspection require access to the engine room, which presents challenges. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multifunctional water supply system for a floating production platform, a living platform or other aquaculture platform which does not require an engine room under the main deck.

[0006] In order to solve the above technical problems, the present invention provides a multifunctional water supply system for a floating platform, comprising two water tanks independently arranged on the bottom side of the main deck, the bottom ends of the water tanks are respectively provided with the ends of a common suction pipe and a fire water pump suction pipe, the head ends of the common suction pipes are respectively connected to the production water pump inlet and the domestic water pump inlet fixed on the main deck, the head ends of the fire water pump suction pipes are connected to the fire water pump inlet installed on the main deck, and the fire water pump inlet is connected to the production water pump inlet and the domestic water pump inlet through a pipeline provided with a one-way valve and a ball valve.

[0007] According to a preferred embodiment of the present invention, a liquid level switch is provided in each of the water tanks.

[0008] According to a preferred embodiment of the present invention, the depth of the water tank is less than 6.9-7.1m.

[0009] According to a preferred embodiment of the present invention, the production water pump, domestic water pump and fire water pump are all self-priming centrifugal pumps.

[0010] According to a preferred embodiment of the present invention, both the common water suction pipe and the fire pump water suction pipe are provided with ball valves.

[0011] According to a preferred embodiment of the present invention, the ball valves are all full-bore ball valves.

[0012] According to a preferred embodiment of the present invention, both the common water suction pipe and the fire pump water suction pipe are installed with a one-way valve.

[0013] According to a preferred embodiment of the present invention, the common water suction pipe is provided with a vent hole with a diameter of 24 mm to 26 mm at a safe water level position.

[0014] According to a preferred embodiment of the present invention, the ends of the common water suction pipe and the fire pump water suction pipe are both provided with a suction port with a triangular cross-section.

[0015] According to a preferred embodiment of the present invention, the water tank includes a main water tank and a spare water tank.

[0016] The technical effects of the present invention are:

[0017] 1. The present invention relates to a multifunctional water supply system for a floating platform, comprising two water tanks and a production water pump, a domestic water pump, and a fire water pump. The water tanks serve as storage tanks for production water, domestic water, and fire water, with the tank depth selected based on the suction height of the self-priming pump. The two water tanks, one for use and one for backup, are used by all water pumps to draw water from these two tanks. A liquid level switch is installed within the tank, and the set point of the liquid level switch is determined by the safe water storage capacity for fire water. When the liquid level within the tank reaches the set point of the liquid level switch, the water intake tanks for the production water and domestic water pumps are switched, or the production and domestic water pumps are shut down. A vent hole is opened at the safe water level height of the shared suction pipe. If the liquid level switch fails, the domestic water and production water pumps can be physically disabled, thereby achieving the beneficial effect of multi-user water supply on floating production platforms, domestic platforms, or other aquaculture platforms without the need for an engine room below the main deck.

[0018] 2. The present invention provides a multifunctional water supply system for a floating platform. The production water pump, domestic water pump, and fire water pump are all self-priming centrifugal pumps and are arranged on the main deck, reducing the need for an engine room inside the cabin. At the same time, daily maintenance and overhaul work can be carried out on the main deck. Compared with the design of pumps installed in the engine room, the cost and difficulty of equipment maintenance and overhaul are reduced.

[0019] 3. The present invention provides a multifunctional water supply system for a floating platform. The fire pump suction pipe is designed separately and equipped with a one-way valve at the end of the pipe. This prevents water in the pipe from flowing back into the water tank due to gravity, ensuring that the pipe is always filled with water. When the fire pump is started, there is no need to prime the pump. This ensures that the fire pump can be started at any time.

[0020] 4. The present invention provides a multifunctional water supply system for a floating platform. The common water suction pipe is provided with a one-way valve above the vent hole. When the pump stops operating, the water in the water suction pipe will not be drained due to the action of the one-way valve. There is no need to prime the pump when starting it, thereby saving the time of starting the pump.

[0021] 5. The present invention provides a multifunctional water supply system for a floating platform. The water inlet of the fire water pump is connected to the water inlets of the production water pump and the domestic water pump through a pipeline equipped with a one-way valve and a ball valve. When the fire water pump is not running, the ball valve can be opened periodically to use the suction force of the production water pump and the domestic water pump to fill the fire water pump suction pipe with water. At the same time, when the water in the cabin needs to be drained, this connecting pipeline can also be opened, so that the production water pump and the domestic water pump can be used to complete the cabin cleaning work at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic flow chart of a multifunctional water supply system for a floating platform.

[0023] Figure markings: 1-main water tank; 2-spare water tank; 3-production water pump; 4-domestic water pump; 5-fire water pump; 7-ball valve; 8-ball valve; 9-check valve; 10-liquid level switch; 11-ball valve; 12-ball valve; 13-ball valve; 14-ball valve; 15-liquid level switch; 16-first fire water pump suction pipe; 17-check valve; 18-suction port; 19-common suction pipe; 20-check valve; 21-suction port; 22-common suction pipe; 23-check valve; 24-suction port; 25-second fire water pump suction pipe; 26-check valve; 27-suction port; 28-vent; 29-main deck. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the invention.

[0025] Figure 1 It is a flow chart of the multifunctional water supply system of the present invention, as shown in FIG. Figure 1As shown, a multifunctional water supply system for a floating platform includes a main water tank 1 and a backup water tank 2. The two water tanks have the same capacity, one for use and one for backup. The capacity of the water tanks depends on the fire water safety reserve and the sum of the water consumption of all other users. The main water tank 1 and the backup water tank 2 are respectively provided with a liquid level switch 10 and a liquid level switch 15.

[0026] During normal operation, the domestic water pump 4 and the production water pump 3 are running, while ball valve 12 is open and ball valve 13 is closed, pumping water from the main water tank 1 through the shared suction pipe 19. When the liquid level in the main water tank 1 drops to 110% of the fire water safety reserve, the liquid level switch 10 issues an alarm signal, prompting the operator to close ball valve 12 and open ball valve 13, allowing the domestic water pump 4 and the production water pump 3 to pump water from the reserve water tank 2 through the shared suction pipe 22. If there is a delay or error in the operator's operation and this switchover is not completed in time, the domestic water pump 4 and the production water pump 3 will continue to pump water from the main water tank 1 through the shared suction pipe 19. When the liquid level reaches 108% of the fire water safety reserve, the liquid level switch 10 issues a pump-off signal, directly shutting down the domestic water pump 4 and the production water pump 3, thus ensuring a safe fire water reserve. In the fire water pump system, under normal circumstances, ball valve 11 is open and ball valve 14 is closed. When the fire pump 5 is started, it pumps water from the main water tank 1 through the first fire pump suction pipe 16. When the water tank 1 is under maintenance or the water level is insufficient, the ball valve 11 is closed and the ball valve 14 is opened, and the fire pump 5 pumps water from the standby water tank 2 through the second fire pump suction pipe 25.

[0027] The shared suction pipe 19 and the shared suction pipe 22 are each provided with a 25mm diameter vent hole 28, located at the liquid level corresponding to the fire water safety reserve. When the intake tank is the main water tank 1, if the liquid level switch 10 fails and cannot issue an alarm or shutoff signal, the domestic water pump 4 and the production water pump 3 will not be able to promptly switch the water source from the main water tank 1 to the backup water tank 2. When the liquid level in the main water tank 1 drops to the level corresponding to the fire water safety reserve, the shared suction pipe 19 is connected to the atmosphere through the 25mm vent hole 28, and the domestic water pump 4 and the production water pump 3 will no longer be able to supply water from the main water tank 1, further achieving the physical function of ensuring the fire water safety reserve.

[0028] The common water suction pipe 19 and the common water suction pipe 22 are respectively installed with a one-way valve 20 and a one-way valve 23. The one-way valve 20 and the one-way valve 23 are installed at a height of 25 mm above the vent 28. Due to the presence of the one-way valve 20 and the one-way valve 23, the water in the pipes will not be discharged under the action of gravity, so that the common water suction pipe 19 and the common water suction pipe 22 are always filled with water, and there is no need to perform a pump priming operation when starting the pump, so that the water pump can be started at any time. Similarly, the first fire water pump suction pipe 16 and the second fire water pump suction pipe 25 are respectively installed with a one-way valve 17 and a one-way valve 26. The first fire water pump suction pipe 16 and the second fire water pump suction pipe 25 are always filled with water, and there is no need to perform a pump priming operation when starting the pump, so that the fire water pump 5 can be started at any time.

[0029] The inlet of the fire water pump 5 is connected to the water inlets of the production water pump 3 and the domestic water pump 4 via a pipe equipped with a one-way valve 9 and a ball valve 8. The ball valve 8 can be opened periodically to use the suction force of the domestic water pump 4 and the production water pump 3 to fill the first fire water pump suction pipe 16 or the second fire water pump suction pipe 25 with water. This solves the problem of water in the suction pipe leaking back into the water tank through the one-way valve 9 when the fire water pump 5 is not in operation for a long time, further ensuring that the fire water pump 5 can be opened at any time. At the same time, when the water tank needs to be stripped and emptied, the ball valve 8 can be opened and the domestic water pump 4 or the production water pump 3 can be used to pump out the main water tank 1 through the first fire water pump suction pipe 16 or the standby water tank 2 through the second fire water pump suction pipe 25. This eliminates the need for an additional stripping pump and eliminates the safety hazards associated with using the fire water pump 5 to complete the stripping operation.

[0030] The domestic water pump 4, production water pump 3, and fire water pump 5 are all self-priming centrifugal pumps. To reduce suction resistance, ball valves 6, 7, 8, 11, 12, 13, and 14 are all full-bore ball valves. This solution allows all water pumps to be installed on the main deck 29, eliminating the need for an engine room below the main deck 29. This reduces the design and construction costs of the hull engine room and simplifies equipment maintenance and overhaul.

[0031] The above embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A multifunctional water supply system for a floating platform, characterized in that: It comprises two water tanks independently arranged on the bottom side of the main deck, the bottom ends of the water tanks are both provided with the ends of a common water suction pipe and a fire water pump suction pipe, the head ends of the common water suction pipes are respectively connected to the water inlet of the production water pump and the water inlet of the domestic water pump fixed on the main deck, the head ends of the fire water pump suction pipes are connected to the water inlet of the fire water pump installed on the main deck, and the water inlet of the fire water pump is communicated with the water inlet of the production water pump and the water inlet of the domestic water pump via a pipeline provided with a one-way valve and a ball valve; The water tank includes a main water tank and a spare water tank, and the main water tank and the spare water tank are respectively provided with a liquid level switch. The common water suction pipe and the fire water pump suction pipe are both provided with a ball valve. When the water tank needs to be cleaned and emptied, the ball valve is opened, and the domestic water pump or the production water pump is used to evacuate the main water tank through the first fire water pump suction pipe or to evacuate the spare water tank through the second fire water pump suction pipe.

2. A multifunctional water supply system for a floating platform according to claim 1, characterized in that: The depth of the water tank is less than 6.9-7.1m.

3. The multifunctional water supply system for a floating platform according to claim 1, characterized in that: The production water pump, domestic water pump and fire water pump are all self-priming centrifugal pumps.

4. The multifunctional water supply system for a floating platform according to claim 1, characterized in that: The ball valves are all full-bore ball valves.

5. The multifunctional water supply system for a floating platform according to claim 1, characterized in that: Both the common water suction pipe and the fire pump water suction pipe are equipped with one-way valves.

6. The multifunctional water supply system for a floating platform according to claim 1, characterized in that: The common water suction pipe is provided with an air vent with a diameter of 24mm-26mm at a safe water level position.

7. The multifunctional water supply system for a floating platform according to claim 1, characterized in that: The ends of the common water suction pipe and the fire pump water suction pipe are both provided with a suction port with a triangular longitudinal section.

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