阅读说明：本技术 一种柴油机电力启动装置、启动方法及船舶 (Diesel engine electric starting device, starting method and ship ) 是由 许德春 于 2019-09-17 设计创作，主要内容包括：本发明涉及船舶技术领域,公开一种柴油机电力启动装置、启动方法及船舶。其中柴油机电力启动装置包括推进装置、第一离合器和主轴发电机组；其中推进装置与柴油机的主轴连接；第一离合器位于推进装置与柴油机之间,第一离合器的一端与柴油机的主轴连接,另一端与推进装置选择性连接,以推动船舶运动；主轴发电机组与柴油机的主轴连接,能够通过电力启动柴油机。本发明还公开了一种柴油机电力启动方法及船舶。本发明通过主轴发电机组,实现对柴油机的电力启动,能减少用于启动柴油机启动的装置的设备,简化了构造,降低了成本；通过在推进装置和柴油机之间设置的第一离合器,降低了启动柴油机的功率,节约了能源。(the invention relates to the technical field of ships and discloses a diesel engine electric starting device, a starting method and a ship. The diesel engine electric starting device comprises a propelling device, a first clutch and a main shaft generator set; wherein the propulsion device is connected with a main shaft of the diesel engine; the first clutch is positioned between the propelling device and the diesel engine, one end of the first clutch is connected with a main shaft of the diesel engine, and the other end of the first clutch is selectively connected with the propelling device so as to push the ship to move; the main shaft generator set is connected with a main shaft of the diesel engine, and the diesel engine can be started through electric power. The invention also discloses a diesel engine electric starting method and a ship. According to the invention, the electric starting of the diesel engine is realized through the main shaft generator set, so that equipment for starting a device for starting the diesel engine can be reduced, the structure is simplified, and the cost is reduced; the first clutch arranged between the propelling device and the diesel engine reduces the power for starting the diesel engine and saves energy.)

1. An electric starting device for a diesel engine, comprising:

a propulsion device (1) which can be connected to the main shaft of a diesel engine (2);

The first clutch (3) is positioned between the propulsion device (1) and the diesel engine (2), one end of the first clutch (3) is connected with a main shaft of the diesel engine (2), and the other end of the first clutch (3) is selectively connected with the propulsion device (1) to push a ship to move;

And the main shaft generator set (4) is connected with a main shaft of the diesel engine (2) and can start the diesel engine (2) through electric power.

2. The diesel electric starter according to claim 1, characterized by further comprising an auxiliary system electrically connected to the main shaft generator set (4).

3. The diesel electric starter according to claim 1, characterized by further comprising a second clutch (5) between the spindle generator set (4) and the diesel engine (2), wherein one end of the second clutch (5) is connected with the spindle of the diesel engine (2), and the other end is selectively connected with the spindle generator set (4).

4. An electric starting device for a diesel engine according to claim 1, characterized in that said spindle generator set (4) is located between said first clutch (3) and said diesel engine (2).

5. an electric starting method of a diesel engine for starting the diesel engine (2) with the electric starting device of a diesel engine according to any one of claims 1 to 4, characterized in that the step of starting the diesel engine (2) from a static state to a starting state comprises the steps of:

Step 11, disconnecting the first clutch (3);

Step 12, supplying power to the main shaft generator set (4), wherein the main shaft generator set (4) is in an electric dragging state and drives the diesel engine (2) to start;

and step 13, monitoring the rotating speed of the diesel engine (2) in real time, finishing starting when the rotating speed of the diesel engine (2) reaches a first set value, stopping supplying power to the spindle generator set (4), closing the first clutch (3), and propelling the ship to move along a first direction by the propelling device (1).

6. the diesel engine electric starting method as set forth in claim 5, wherein when the ship moving in the first direction needs to be decelerated, the method includes the steps of:

Step 21, controlling the diesel engine (2) to stop oil injection and to be in an idle running state;

And step 22, controlling the main shaft generator set (4) to operate in a power generation mode to enable the main shaft generator set to be in a reverse torque output state, so that the rotating speed of the diesel engine (2) is gradually reduced, and the ship is in a speed reduction state.

7. The diesel engine electric starting method as set forth in claim 5, wherein when the ship moving in the first direction needs to move to a second direction opposite to the first direction, the method includes the steps of:

Step 31, controlling the diesel engine (2) to stop oil injection and be in an idle running state;

step 32, controlling the main shaft generator set (4) to operate in a power generation mode to enable the main shaft generator set to be in a reverse torque output state, so that the rotating speed of the diesel engine (2) is gradually reduced, and the ship is in a speed reduction state;

Step 33, monitoring the rotating speed of the diesel engine (2) in real time, and when the rotating speed of the diesel engine (2) reaches a second set value and can be restarted, supplying power to the spindle generator set (4) to enable the spindle generator set to be switched to an electric power dragging state in a second direction to drive the diesel engine (2) to be started;

And step 34, monitoring the rotating speed of the diesel engine (2) in real time, finishing starting when the rotating speed of the diesel engine (2) in the second direction reaches the first set value, stopping supplying power to the spindle generator set (4), and propelling a ship to move along the second direction by the propelling device (1).

8. The electric starting method of claim 7 wherein said first direction is a forward direction and said second direction is a reverse direction.

9. A marine vessel comprising an electric diesel engine starting device according to any one of claims 1 to 4.

10. a marine vessel, characterized in that a diesel engine (2) of the marine vessel can be started using the diesel engine electric starting method as claimed in any one of claims 5-8.

Technical Field

The invention relates to the technical field of ships, in particular to a diesel engine electric starting device, a diesel engine electric starting method and a ship.

background

The starting device of the marine high-power low-speed diesel engine can not be started during running, and the starting device of the marine low-speed diesel engine is a compressed air starting device generally. Specifically, when the main engine needs to be started, the distribution device is started through compressed air, and high-pressure air is injected into the cylinder according to a starting time sequence, so that a piston in the cylinder is pushed to reciprocate to drive the main shaft of the diesel engine to rotate. When starting, the power is great, in addition, traditional marine low-speed host computer air start distributor system structure is complicated, needs to be equipped with supplementary compressed air pump station, gas cylinder storage device and cylinder air injection valve etc. causes the equipment numerous, problem such as the cost is higher.

disclosure of Invention

based on the above, the invention aims to provide an electric starting device and a starting method for a diesel engine and a ship, which have the advantages of simple structure, low cost, low power and energy conservation.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electric starting device for a diesel engine, comprising:

The propulsion device can be connected with a main shaft of the diesel engine;

The first clutch is positioned between the propelling device and the diesel engine, one end of the first clutch is connected with a main shaft of the diesel engine, and the other end of the first clutch is selectively connected with the propelling device so as to push a ship to move;

and the main shaft generator set is connected with a main shaft of the diesel engine and can start the diesel engine through electric power.

The diesel engine electric starting device preferably further comprises an auxiliary machine system, and the auxiliary machine system is electrically connected with the main shaft generator set.

as a preferred scheme of the diesel engine electric starting device, the diesel engine electric starting device further comprises a second clutch, the second clutch is located between the main shaft generator set and the diesel engine, one end of the second clutch is connected with a main shaft of the diesel engine, and the other end of the second clutch is selectively connected with the main shaft generator set.

as a preferable scheme of the diesel engine electric starting device, the spindle generator set is located between the first clutch and the diesel engine.

The electric starting method for the diesel engine adopts the electric starting device for the diesel engine to start the diesel engine, and the electric starting device for the diesel engine comprises the following steps from a static state to a starting state:

step 11, disconnecting the first clutch;

Step 12, supplying power to the main shaft generator set, wherein the main shaft generator set is in an electric dragging state and drives the diesel engine to start;

And step 13, monitoring the rotating speed of the diesel engine in real time, finishing starting when the rotating speed of the diesel engine reaches a first set value, stopping supplying power to the main shaft generator set, closing the first clutch, and propelling the ship to move along a first direction by the propelling device.

as a preferable mode of the diesel engine electric starting method, when the ship moving in the first direction needs to be decelerated, the method comprises the following steps:

step 21, controlling the diesel engine to stop oil injection and to be in an idle running state;

And step 22, controlling the main shaft generator set to operate in a power generation mode to enable the main shaft generator set to be in a reverse torque output state, so that the rotating speed of the diesel engine is gradually reduced, and the ship is in a speed reduction state.

As a preferable mode of the diesel engine electric starting method, when the ship moving in the first direction needs to move to a second direction opposite to the first direction, the method comprises the following steps:

Step 31, controlling the diesel engine to stop oil injection and to be in an idle running state;

Step 32, controlling the main shaft generator set to operate in a power generation mode to enable the main shaft generator set to be in a reverse torque output state, so that the rotating speed of the diesel engine is gradually reduced, and the ship is in a speed reduction state;

Step 33, monitoring the rotating speed of the diesel engine in real time, and when the rotating speed of the diesel engine reaches a second set value and can be restarted, supplying power to the spindle generator set to enable the spindle generator set to be switched to an electric power dragging state in a second direction to drive the diesel engine to be started;

And step 34, monitoring the rotating speed of the diesel engine in real time, finishing starting when the rotating speed of the diesel engine in the second direction reaches the first set value, stopping supplying power to the main shaft generator set, and propelling the ship to move along the second direction by the propelling device.

In a preferred embodiment of the electric starting method for a diesel engine, the first direction is a forward direction, and the second direction is a reverse direction.

a marine vessel comprising a diesel engine electric starting apparatus according to any one of the preceding aspects.

a ship starts a diesel engine of the ship by adopting the diesel engine electric starting method of any scheme.

The invention has the beneficial effects that: the electric starting of the diesel engine is realized through the main shaft generator set, equipment for starting a diesel engine starting device can be reduced, the structure is simplified, and the cost is reduced; when the main shaft generator set is started, the propulsion device and the diesel engine can be disconnected by disconnecting the first clutch arranged between the propulsion device and the diesel engine, so that the electric power of the main shaft generator set is only used for starting the diesel engine, the reduction of the power for starting the diesel engine is facilitated, and energy is saved.

drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic diagram of an electric starter for a diesel engine according to an embodiment of the present invention;

FIG. 2 is a first flowchart of a method for starting a diesel engine electrically according to an embodiment of the present invention;

FIG. 3 is a second flowchart of a method for starting a diesel engine electrically according to an embodiment of the present invention;

fig. 4 is a flowchart three of a diesel engine electric starting method according to an embodiment of the present invention.

In the figure:

1-a propulsion device; 2-a diesel engine; 3-a first clutch; 4-a main shaft generator set; 5-second clutch.

Detailed Description

in order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a diesel engine electric starting apparatus for starting a diesel engine in a ship, the apparatus including a propulsion apparatus 1, a first clutch 3, and a main shaft generator set 4; wherein the propulsion device 1 is connected with a main shaft of the diesel engine 2; the first clutch 3 is positioned between the propulsion device 1 and the diesel engine 2, one end of the first clutch 3 is connected with a main shaft of the diesel engine 2, and the other end of the first clutch 3 is selectively connected with the propulsion device 1 to push the ship to move; the main shaft generator set 4 is connected with a main shaft of the diesel engine 2, and can start the diesel engine 2 through electric power.

the main shaft generator set 4 is used for realizing the electric starting of the diesel engine 2, so that equipment for starting a diesel engine starting device can be reduced, the structure is simplified, and the cost is reduced; when starting, the first clutch 3 arranged between the propulsion device 1 and the diesel engine 2 can be disconnected, and then the propulsion device 1 and the diesel engine 2 are disconnected, so that the electric power of the spindle generator set 4 is only used for starting the diesel engine 2, the reduction of the power for starting the diesel engine 2 is facilitated, and energy is saved.

Further, the diesel engine electric starting device further comprises an auxiliary machine system, the auxiliary machine system is electrically connected with the main shaft generator set 4, and when the main shaft generator set 4 is needed to start the diesel engine 2, power is supplied to the main shaft generator set 4 to start the diesel engine 2.

Preferably, the diesel engine electric starting device further comprises a second clutch 5 located between the main shaft generator set 4 and the diesel engine 2, wherein one end of the second clutch 5 is connected with the main shaft of the diesel engine 2, and the other end of the second clutch is selectively connected with the main shaft generator set 4. The second clutch 5 is closed both at the start and at normal operation of the diesel engine 2; when the spindle generator set 4 or the diesel engine 2 is overhauled, the second clutch 5 can be disconnected, the spindle generator set 4 and the diesel engine 2 are further disconnected, and the spindle generator set 4 or the diesel engine 2 is convenient to overhaul.

specifically, the spindle generator set 4 is located between the first clutch 3 and the diesel engine 2. The propulsion device 1 of the diesel engine electric starting device is a paddle, and after the diesel engine 2 is started, the diesel engine 2 can drive the paddle to rotate so as to enable the ship to move.

As shown in fig. 2, the present embodiment further discloses a method for electrically starting a diesel engine 2 by using the above diesel engine electric starting apparatus, where the diesel engine 2 from a static state to a starting state includes the following steps:

Step 11, disconnecting the first clutch 3;

step 12, supplying power to the main shaft generator set 4, wherein the main shaft generator set 4 is in an electric dragging state and drives the diesel engine 2 to start;

And step 13, monitoring the rotating speed of the diesel engine 2 in real time, finishing starting when the rotating speed of the diesel engine 2 reaches a first set value, stopping supplying power to the main shaft generator set 4, closing the first clutch 3, and propelling the ship by the propelling device 1 to move along the first direction.

as shown in fig. 3, when the ship moving in the first direction needs to be decelerated, the method comprises the following steps:

Step 21, controlling the diesel engine 2 to stop oil injection and be in an idle running state;

and step 22, controlling the main shaft generator set 4 to operate in a power generation mode to enable the main shaft generator set to be in a reverse torque output state, so that the rotating speed of the diesel engine 2 is gradually reduced, and the ship is in a speed reduction state.

as shown in fig. 4, when the ship moving in the first direction needs to move to the second direction opposite to the first direction, the method comprises the following steps:

Step 31, controlling the diesel engine 2 to stop oil injection and be in an idle running state;

step 32, controlling the main shaft generator set 4 to operate in a power generation mode to enable the main shaft generator set to be in a reverse torque output state, so that the rotating speed of the diesel engine 2 is gradually reduced, and the ship is in a speed reduction state;

Step 33, monitoring the rotating speed of the diesel engine 2 in real time, and when the rotating speed of the diesel engine 2 reaches a second set value and can be restarted, supplying power to the spindle generator set 4 to switch the spindle generator set to an electric power dragging state in a second direction to drive the diesel engine 2 to be started;

And step 34, monitoring the rotating speed of the diesel engine 2 in real time, finishing starting when the rotating speed of the diesel engine 2 in the second direction reaches a first set value, stopping supplying power to the main shaft generator set 4, and propelling the ship by the propelling device 1 to move along the second direction.

Preferably, in the above steps, the second clutch 5 is always kept in the closed state. In the step of the diesel engine 2 from a static state to a starting state, firstly, the first clutch 3 is disconnected, so that the electric power of the main shaft generator set 4 is all used for starting the diesel engine 2, and the power of the main shaft generator set 4 is reduced; in order to achieve a fast response of the propulsion device 1, the first clutch 3 is always kept closed during the time when the vessel moving in the first direction needs to be decelerated or the vessel moving in the first direction needs to be moved in a second direction opposite to the first direction.

Specifically, in the above steps, the second set value of the rotation speed of the diesel engine 2 is used to determine whether the state of the diesel engine 2 can be reversely started; the first set value is used to determine whether the diesel engine 2 is started successfully. The specific values of the first set value and the second set value can be determined by those skilled in the art according to the parameters of the diesel engine 2, and are not limited herein.

it should be noted that the first direction and the second direction may be understood as a forward direction or a backward direction. Namely, the ship can move forward/backward from a static state to a starting state; the ship in forward/reverse can be decelerated; a ship moving in the forward/reverse direction during deceleration may continue to move in the forward/reverse direction or change direction to move in the reverse/forward direction after stopping deceleration. In this embodiment, the first direction is a forward direction, the second direction is a reverse direction, and steps 31 to 34 are performed to move the ship moving in the forward direction in the reverse direction.

the embodiment also discloses a ship, which comprises the diesel engine electric starting device.

the embodiment also discloses a ship, and the diesel engine 2 of the ship can be started by adopting the diesel engine electric starting method.

it is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.