CN205135866U - A oil feeding system that is used for boats and ships mistake electricity to resume - Google Patents

Abstract

The utility model relates to an oil supply system for recovering power loss of ships, which belongs to the technical field of power loss recovery schemes for ships. A fuel supply system for ship power failure recovery, characterized in that: for a ship that uses an electric pump to provide fuel for a diesel engine for power generation, a pneumatic fuel pump is set in the pipeline of the fuel oil supply system of the diesel generator set; The pneumatic fuel pump is also set in parallel with the high-mounted fuel tank; for ships that use the electric pump to provide lubricating oil for the diesel engine for power generation, a UPS is installed in the pipeline of the lubricating oil supply system of the diesel generator set to supply power to the electric lubricating oil pump; When the diesel generator set is in the running state when the power is lost, the diesel generator set can continue to work and restore power by turning on and maintaining the pneumatic fuel pump and the electric lubricating oil pump; when the diesel generator set is in the stop state when the power is lost, the high The fuel tank is opened to use gravity to supply fuel to the diesel generator set, the electric lubricating oil pump is turned on, the diesel generator set starts to work, and the power supply is restored.

Description

A kind of oil supply system for ship power failure recovery

technical field

The utility model relates to an oil supply system for recovering power loss of ships, which belongs to the technical field of power loss recovery schemes for ships.

Background technique

For ships that use diesel engines as the power supply to provide the main power supply, in order to ensure the normal operation of the diesel engines, it is necessary to supply the required cooling water, fuel and lubricating oil. If the cooling water, fuel and lubricating oil of the diesel engine for power generation are provided by the electric pump, when the ship loses power, the main power supply will not be able to supply power to the electric pump, resulting in the diesel engine being forced to stop working and power generation.

At this time, the main equipment can only be powered by the emergency power supply to restore the ship from the power failure state, resulting in a long time. At present, most ships use a dedicated diesel generator as an emergency power supply. Since it takes a certain amount of time to start the diesel generator, the above-mentioned contradiction is more prominent, which is not conducive to the safe operation of the ship.

Utility model content

The purpose of the utility model is to provide a system for directly recovering the power supply of the diesel engine generated by the main power source without using the emergency power source, which reduces the time for the ship to recover from power loss and improves the safety of the ship's operation.

The utility model takes the following technical solutions:

A fuel supply system used for power failure recovery of ships. For ships that use electric pumps to provide fuel for diesel engines for power generation, a pneumatic fuel pump is installed in the pipeline of the fuel oil supply system of the diesel generator set; the pneumatic fuel pump is also Set in parallel with the high-mounted fuel tank; for ships that use electric pumps to provide lubricating oil for diesel engines for power generation, a UPS is installed in the pipeline of the lubricating oil supply system of the diesel generator set to supply power to the electric lubricating oil pump; when the diesel generator set It is in the running state when the power is lost. By turning on and maintaining the pneumatic fuel pump and the electric lubricating oil pump, the diesel generator set can continue to work and restore the power supply; The fuel tank is opened to use gravity to supply oil to the diesel generator set, the electric lubricating oil pump is turned on, the diesel generator set starts to work, and the power supply is restored.

The characteristics of this technical solution are: a pneumatic fuel pump and a high-mounted fuel tank are set in the fuel supply pipeline, and an electric lubricating oil pump is set in the lubricating oil supply pipeline, and the electric lubricating oil pump is powered by UPS. In this way, the power supply of the ship can be restored by maintaining the fuel and lubricating oil supply of the diesel generator set. There are two situations here. When the diesel generator set is still working when the power is off, the fuel demand is large at this time, and a pneumatic fuel pump is required for fuel supply. When the diesel generator set is not working when the power is off, restart the engine The required amount of fuel supply is small, so only a high-mounted fuel tank is needed, and the gravity of the fuel is used to supply fuel by itself, which can reduce energy consumption and achieve energy-saving effects. The whole system only needs to set up a UPS with a small power to prepare power for the electric lubricating oil pump, and the economy is also good. Since the restoration of power supply according to this scheme takes a short time, the extra supply of cooling water can be omitted during the restoration of power failure.

Further, the pneumatic fuel pump is arranged in parallel with the electric fuel pump, and the pneumatic fuel pump and the electric fuel pump can be turned on simultaneously or separately.

Further, the height of the high fuel tank is at least 10m.

Further, a check valve is provided in the pipeline where the high-mounted fuel tank is located.

Further, the oil in the high-mounted fuel tank flows away through the fuel oil supply pipeline of the diesel engine, and a back pressure valve is set on the fuel oil return pipeline of the diesel engine.

A kind of above-mentioned fuel supply system used for recovery from power failure of ships, changing "setting a pneumatic fuel pump in the pipeline of the fuel oil supply system of the diesel generating set" to "setting a UPS in the fuel supply system of the diesel generating set , to supply power to the electric fuel pump"; and change "set up a UPS in the lubricating oil supply system of the diesel generator set to supply power to the electric lubricating oil pump" to "set up a pneumatic oil pump".

The beneficial effects of the utility model are:

1) There is no need to use the emergency power supply, and the ship can be directly restored to power supply, which greatly reduces the time for the ship to recover from power failure and improves the safety of the ship's operation.

2) The high-mounted fuel tank, pneumatic fuel pump, and UPS that supply power to the electric lubricating oil pump are used for power failure recovery. The configuration is reasonable and ingenious, and at the same time, it takes into account the feasibility, reliability, and economy.

3) For the fuel system, high-mounted fuel tanks and pneumatic fuel pumps can be used for ship power failure recovery, which can reduce the consumption of compressed air and increase the reliability and energy saving of the system.

4) Since the time for power supply recovery according to this scheme is short, the extra supply of cooling water can be omitted during the process of power failure recovery.

Description of drawings

Fig. 1 is a schematic diagram of the fuel supply of the utility model for the fuel supply system of the ship power failure recovery.

Fig. 2 is a schematic diagram of lubricating oil supply of the oil supply system used for recovery from power loss of ships according to the present invention.

detailed description

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

Referring to Figure 1-2, this solution is suitable for ships that use electric pumps to provide cooling water, fuel and lubricating oil for diesel engines for power generation, so that they can recover from power failure as soon as possible. Supplying fuel oil and lubricating oil to the diesel engine for power generation is a necessary condition for its start-up. For fuel supply, set up a high-mounted fuel tank (a certain height from the diesel engine) and a pneumatic pump; The lubricating oil pump is powered to provide the required lubricating oil.

There are many reasons for causing the ship to lose power, but when adopting the scheme of the present utility model to recover from the ship's power loss, it can be divided into two situations on the whole. Case 1, the diesel generator set running on the grid is in the running state when the power is lost, and the power supply is restored by maintaining the operation of the unit. In the second case, the power supply is restored by starting the diesel generator set (for example, the power supply of the whole ship is lost due to the failure of the on-grid generator set, and the power supply is restored by starting the standby generator set).

For the first case, the generator diesel engine is running and has a load, so the supply of fuel and lubricating oil should meet the requirements of the rated working condition of the diesel engine, so the pneumatic fuel pump and the electric lubricating oil pump driven by UPS inverter are The diesel engine provides the necessary fuel and lubricating oil. In the process of restoring the power supply, the supply of fuel and lubricating oil ensures the continuous operation of the diesel engine, so the power restoration time is short, and the cooling water does not need to be provided in a short period of time, or it is provided by an electric pump according to the actual situation.

For the second case, since the diesel engine is restored from a static state to a running state, the diesel engine has no load during this process, so the fuel supply is originally smaller than the first case. In order to reduce the consumption of compressed air, the high fuel tank is used to supply The supply of oil and lubricating oil is the same as the first case. In addition, there is no load on the diesel engine during start-up, so there is no need to provide continuous flow of cooling water like the normal operation of the diesel engine. The pipeline from the high-mounted fuel tank to the diesel engine meets the pipeline from the fuel supply pump to the diesel engine. In order to prevent the fuel from diverting from the fuel pump during normal operation, a check valve should be installed on the pipeline from the high-mounted fuel tank to the diesel engine. Similarly, in order to prevent the oil in the high-mounted fuel tank from flowing away through the oil supply pipeline of the diesel engine when the diesel engine stops running, a back pressure valve should be installed on the oil return pipeline of the diesel engine. Please refer to attached drawing 1 for details.

Claims (7)

1., for the oil supply system that boats and ships dead electricity is recovered, it is characterized in that:

For adopting motor-drive pump to provide the boats and ships of fuel oil for diesel engine for power generation, pneumatic fuel-pump is set in the pipeline of the fuel oil supply system of diesel generating set; Described pneumatic fuel-pump is also put fuel oil tank with height and is arranged in parallel;

For adopting motor-drive pump to provide the boats and ships of lubricating oil for diesel engine for power generation, UPS being set in the lubrication oil supply system of diesel generating set, powering to electric sliding oil pump;

Be in running state when diesel generating set is in dead electricity, by opening and maintaining pneumatic fuel-pump and electric sliding oil pump, make diesel generating set continue maintenance work, restore electricity;

When being in halted state when diesel generating set is in dead electricity, height is put fuel oil tank unlatching and is utilized gravity to diesel generating set for fuel oil, and electric sliding oil pump is opened, and diesel generating set is started working, and restores electricity.

2., as claimed in claim 1 for the oil supply system that boats and ships dead electricity is recovered, it is characterized in that: described pneumatic fuel-pump is also arranged in parallel with electric fuel punp, described pneumatic fuel-pump also can be opened with electric fuel punp simultaneously and also can open respectively.

3., as claimed in claim 1 for the oil supply system that boats and ships dead electricity is recovered, it is characterized in that: the height that described height puts fuel oil tank is at least 10m.

4., as claimed in claim 1 for the oil supply system that boats and ships dead electricity is recovered, it is characterized in that: described height is put in the pipeline at fuel oil tank place and is provided with safety check.

5., as claimed in claim 1 for the oil supply system that boats and ships dead electricity is recovered, it is characterized in that: the oil that height puts fuel oil tank flows away through diesel engine fuel oil oil feed line, and diesel engine fuel oil return line arranges back pressure valve.

6. the oil supply system recovered for boats and ships dead electricity according to claim 1, it is characterized in that: " in the pipeline of the fuel oil supply system of diesel generating set, arranging pneumatic fuel-pump " is changed to " in the fuel oil supply system of diesel generating set, arrange UPS, power to electric fuel punp ".

7. the oil supply system recovered for boats and ships dead electricity according to claim 1, it is characterized in that: " in the lubrication oil supply system of diesel generating set, arrange UPS, power to electric sliding oil pump " is changed to " in the pipeline of the lubricating oil oil supply system of diesel generating set, arranging aerodynamic slide oil pump ".