CN219790505U - Control system for alternating current electric propulsion of ship - Google Patents
Control system for alternating current electric propulsion of ship Download PDFInfo
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- CN219790505U CN219790505U CN202320682301.1U CN202320682301U CN219790505U CN 219790505 U CN219790505 U CN 219790505U CN 202320682301 U CN202320682301 U CN 202320682301U CN 219790505 U CN219790505 U CN 219790505U
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Abstract
The utility model discloses a control system for alternating current electric propulsion of a ship, which comprises a propeller, a propulsion motor, a propulsion frequency converter, a local control box, a central control box and a cab control panel, wherein the propeller, the propulsion motor, the propulsion frequency converter and the local control box are arranged in a rudder propeller cabin; the cab control panel is in networking communication with the central control box; the central control box is provided with a central control PLC, a local control PLC, a plurality of central indicating lamps and a plurality of central control buttons, the local control box comprises a plurality of local indicating lamps and a plurality of local control buttons, the central control PLC or the local control PLC can respectively send control instructions to the propulsion frequency converter, and the propulsion frequency converter controls the propulsion motor to drive the propeller to rotate; the system maintains the original emergency treatment function, avoids the situation that the local control PLC is in a rudder propeller cabin with a severe environment, is beneficial to long-term reliable operation of electric components and improves the reliability of products.
Description
Technical Field
The utility model belongs to a control system for ship alternating current electric propulsion.
Background
The ship alternating-current electric propulsion system mainly comprises a prime motor, a generator set, a propulsion frequency converter, a propulsion motor, a propeller and a control system for ship alternating-current electric propulsion. The prime motor drives the generator to generate power, the frequency converter supplies power to the propulsion motor, and finally the propeller is driven by the propulsion motor to make the ship sail.
The control system for the alternating current electric propulsion of the ship is based on a programmable logic controller (PLC for short) and is used for controlling the rotating speeds of a ship propulsion motor and a propeller, and mainly comprises a cab control panel, a central control box and a local control box. The control panel of the cab is embedded on the cab, the rotating speed of the propulsion motor and steering of the rudder propeller can be controlled through the operating handle, the running state of equipment and alarm display in the control process are monitored, and the specific structure is shown in figure 1. The central control box is the core of the control system, mainly performs data acquisition and operation, and feeds back alarm signals to the control panel of the cab. The local control box is arranged in the rudder propeller, is positioned near the propulsion motor, and is convenient for an operator to operate the propulsion motor beside the rudder propeller. Because the environment of the propulsion cabin is severe, the cabin is high-temperature and moist throughout the year, the control type electric components in the local control box cannot reliably operate for a long time (for example, a local programmable logic controller in the local control box cannot operate in severe environment with high temperature and moist throughout the year); if the local control box is canceled, the operator cannot perform the related emergency operation beside the propulsion motor in case of emergency.
Disclosure of Invention
The utility model aims to provide a control system for ship alternating current electric propulsion, which solves the technical problems that in the prior art, a local programmable logic controller (namely a local control PLC) is required to be arranged in a local control box of a rudder propeller cabin for emergency operation, but the environment of the rudder propeller cabin is severe, and the rudder propeller cabin is high-temperature and moist throughout the year, so that the long-term reliable operation of electrical components such as the local control PLC is not facilitated.
The technical scheme of the utility model is realized as follows:
a control system for ac electric propulsion of a vessel, comprising a propeller, a propulsion motor, a propulsion inverter, a local control box, a central control box and a cab control panel, wherein:
the propeller, the propulsion motor, the propulsion frequency converter and the local control box are arranged in the rudder propeller cabin, and the local control box is positioned near the propulsion motor, so that an operator can conveniently operate the propulsion motor locally;
the central control box is arranged in a centralized control room of the ship;
the cab control panel is arranged in the cab of the ship; the cab control panel is in networking communication with the central control box;
the method is characterized in that: the central control box is provided with a central control PLC, a local control PLC, a plurality of central indication lamps and a plurality of central control buttons, the central indication lamps are controlled by the central control PLC, the central control buttons send operation instructions to the central control PLC, the cab control panel is in electric connection communication with the central control PLC, the central control PLC is in electric connection communication with the local control PLC, the local control PLC sends control instructions to the propulsion frequency converter, and the propulsion frequency converter controls the propulsion motor to drive the propeller to rotate;
the local control box comprises a plurality of local indicator lamps and a plurality of local control buttons, wherein the local indicator lamps are controlled by the local control PLC, and the local control buttons directly send operation instructions to the local control PLC.
The cab control panel comprises a cab display, a cab control button, a dimming knob, an alarm lamp and a mechanical instrument panel, wherein the cab display, the cab control button, the dimming knob, the alarm lamp and the mechanical instrument panel are respectively and electrically connected with the central control PLC.
The central control box is also provided with a central display, and the central display is electrically connected with the central control PLC.
The central indicating lamps comprise a comprehensive alarm indicating lamp, a propulsion motor scram indicating lamp, a propulsion frequency conversion comprehensive fault indicating lamp, a control power supply indicating lamp, an emergency power supply indicating lamp, a local control indicating lamp, a remote control indicating lamp, a propulsion frequency conversion preparation indicating lamp, a propulsion motor heating indicating lamp, a propulsion motor input indicating lamp, a heavy load permission indicating lamp and a propulsion motor operation indicating lamp.
The central control buttons comprise a heavy load request button, a propulsion motor start button, a propulsion motor stop button, a propulsion variable frequency fault reset button, a propulsion motor heating button and an emergency stop button.
The central control box is also provided with a power supply module, the input end of the power supply module is from an AC220V distribution box and a DC24V emergency charge-discharge board, the dual power supply inputs are redundant, and the power of the AC220V distribution box is obtained by driving a generator set to generate power by a prime motor.
The local control box further comprises a propulsion motor rotating speed instrument, a propulsion motor load instrument and a buzzer, and the propulsion motor rotating speed instrument, the propulsion motor load instrument and the buzzer are respectively connected and communicated with the local control PLC.
The local indicator lamps comprise a control power indicator lamp, a remote control power indicator lamp, a local control indicator lamp, a propulsion motor running indicator lamp, a propulsion motor band-type brake indicator and a propulsion motor finishing indicator lamp.
The local control buttons comprise a propulsion motor band-type brake button, a propulsion motor request button, a motor speed regulation button and an emergency stop button.
The power supply of the local control box and the cab control panel is from a DC24V power supply provided by the central control box; the control surface of the cab establishes networking communication with the central control PLC through a Profinet bus; the inside of the local control box adopts a pure hard wire form to connect and communicate the propulsion motor rotating speed instrument, the propulsion motor load instrument, the buzzer, the local indicator lamps and the local control buttons with the local control PLC respectively.
Compared with the prior art, the utility model has the following advantages:
1. the utility model is installed in the rudder propeller cabin by installing the local control box, the local control box only keeps a plurality of local indicator lamps and a plurality of local control buttons, the local control PLC is moved into the central control box, the local control buttons can directly send control instructions to the local control PLC, the local control PLC sends control instructions to the propulsion frequency converter, and the propulsion frequency converter controls the propulsion motor to drive the propeller to rotate. The local control box is arranged beside the propulsion motor of the rudder propeller, so that the operation can be executed, the original emergency treatment function is kept, the situation that the local control PLC is in a rudder propeller with a severe environment is avoided, the long-term reliable operation of electrical components such as the local control PLC is facilitated, and the reliability of products is improved.
2. Other advantages of the present utility model are described in detail in the description of the embodiments.
Drawings
Fig. 1 is a schematic block diagram of a conventional control system for ac electric propulsion of a ship.
FIG. 2 is a schematic block diagram of the present utility model;
FIG. 3 is a schematic plan view of a cab control panel of the present utility model;
FIG. 4 is a schematic diagram of a panel layout of a central control box according to the present utility model;
fig. 5 is a schematic diagram of a panel layout of the local control box of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one:
as shown in fig. 2, the present embodiment provides a control system for ac electric propulsion of a ship, including a propeller, a propulsion motor, a propulsion inverter, a local control box, a central control box, and a cab control panel, wherein:
the propeller, the propulsion motor, the propulsion frequency converter and the local control box are arranged in the rudder propeller cabin, and the local control box is positioned near the propulsion motor, so that an operator can conveniently operate the propulsion motor locally;
the central control box is arranged in a centralized control room of the ship;
the cab control panel is arranged in the cab of the ship; the cab control panel is in networking communication with the central control box;
the method is characterized in that: the central control box is provided with a central control PLC, a local control PLC, a plurality of central indication lamps and a plurality of central control buttons, the central indication lamps are controlled by the central control PLC, the central control buttons send operation instructions to the central control PLC, the cab control panel is in electric connection communication with the central control PLC, the central control PLC is in electric connection communication with the local control PLC, the local control PLC sends control instructions to the propulsion frequency converter, and the propulsion frequency converter controls the propulsion motor to drive the propeller to rotate;
the local control box comprises a plurality of local indicator lamps and a plurality of local control buttons, wherein the local indicator lamps are controlled by the local control PLC, and the local control buttons directly send operation instructions to the local control PLC.
As shown in fig. 3, the cab control panel 100 includes a cab display 2, a cab control button 3, a dimming knob 4, a warning lamp 5, and a mechanical dashboard 1, wherein the cab display 2, the cab control button 3, the dimming knob 4, the warning lamp 5, and the mechanical dashboard 1 are electrically connected to a central control PLC, respectively.
As shown in fig. 4, the central control box 200 is further provided with a central display 10, and the central display 10 is electrically connected with the central control PLC. The plurality of central indicator lights 12 include a comprehensive alarm indicator light, a propulsion motor scram indicator light, a propulsion variable frequency comprehensive fault indicator light, a control power indicator light, an emergency power indicator light, a local control indicator light, a remote control indicator light, a propulsion variable frequency readiness indicator light, a propulsion motor heating indicator light, a propulsion motor input indicator light, a heavy load permission indicator light, and a propulsion motor operation indicator light. The plurality of central control buttons 11 includes a heavy load request button, a propulsion motor start button, a propulsion motor stop button, a propulsion variable frequency fault reset button, a propulsion motor heating button, and a scram button.
The central control box 200 is further provided with a power module, the input end of the power module is from an AC220V distribution box and a DC24V emergency charge-discharge board, the dual power inputs are redundant, and the power of the AC220V distribution box is obtained by driving a generator set to generate power by a prime motor.
As shown in fig. 5, the local control box 300 further includes a propulsion motor rotation speed meter 8, a propulsion motor load meter 9, and a buzzer, where the propulsion motor rotation speed meter 8, the propulsion motor load meter 9, and the buzzer are respectively connected and communicated with the local control PLC.
The local indicator lamps 6 comprise control power indicator lamps, remote control power indicator lamps, local control indicator lamps, propulsion motor running indicator lamps, propulsion motor band-type brake indicator lamps and propulsion motor finishing indicator lamps. The local control buttons 7 comprise a propulsion motor band-type brake button, a propulsion motor request button, a motor speed regulation button and a scram button.
The power supply of the local control box and the cab control panel is from a DC24V power supply provided by the central control box; the control surface of the cab establishes networking communication with the central control PLC through a Profinet bus; the inside of the local control box adopts a pure hard wire form to connect and communicate the propulsion motor rotating speed instrument, the propulsion motor load instrument, the buzzer, the local indicator lamps and the local control buttons with the local control PLC respectively.
When the system is powered on, the central control box receives a control right instruction, and when the instruction is 'local control', the central control box and corresponding indicator lamps on the remote control panel display local control, and the control right is local. The local control indicator lamp on the local control box is lightened, and the acceleration and deceleration operation can be carried out on the propulsion motor by operating the acceleration and deceleration knob on the local control box. The control system receives the acceleration and deceleration switching point signal of the local acceleration and deceleration knob, and sends out a corresponding switching point signal to the propulsion frequency converter after the system judgment, so that the purpose of adjusting the rotation speed of the propulsion motor is achieved.
When the central control box receives a control right instruction to be remote control (or called normal control mode), corresponding status indicator lamps on the central control box and a control panel of the cab are remote control, at the moment, the control right is on a central control PLC, and the central control PLC is connected with a propulsion frequency converter through a network to carry out remote control operation. The control system receives the propulsion rotation speed command 4-20mA or 0-10V analog signal, and sends the 4-20mA or 0-10V analog signal to the propulsion frequency converter after system judgment and conversion, thereby achieving the purpose of adjusting the rotation speed of the propulsion motor.
The control system for the alternating current electric propulsion of the ship is provided with a set of emergency operation modes which are completely independent and in a normal control mode, a core control element of the emergency operation mode is arranged in a local control PLC (or called local control) in a central control box, the control system is executed on the local control box, a pure hard wire mode is adopted, a command is sent to the local control PLC through a button of the local control box, and the local control PLC controls a propulsion motor through a propulsion frequency converter. In the event of any emergency in the propulsion of the vessel, a switch to local control may be used to perform the emergency operation. The two operation modes are mutually independent and mutually standby, and the navigation safety of the ship is effectively ensured.
The utility model is installed in the rudder propeller cabin by installing the local control box, the local control box only keeps a plurality of local indicator lamps and a plurality of local control buttons, the local control PLC is moved into the central control box, the local control buttons can directly send control instructions to the local control PLC, the local control PLC sends control instructions to the propulsion frequency converter, and the propulsion frequency converter controls the propulsion motor to drive the propeller to rotate. The local control box is arranged beside the propulsion motor of the rudder propeller, so that the operation can be executed, the original emergency treatment function is kept, the situation that the local control PLC is in a rudder propeller with a severe environment is avoided, the long-term reliable operation of electrical components such as the local control PLC is facilitated, and the reliability of products is improved.
The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present utility model are included in the scope of the present utility model.
Claims (10)
1. A control system for ac electric propulsion of a vessel, comprising a propeller, a propulsion motor, a propulsion inverter, a local control box, a central control box and a cab control panel, wherein:
the propeller, the propulsion motor, the propulsion frequency converter and the local control box are arranged in the rudder propeller cabin, and the local control box is positioned near the propulsion motor, so that an operator can conveniently operate the propulsion motor locally;
the central control box is arranged in a centralized control room of the ship;
the cab control panel is arranged in the cab of the ship; the cab control panel is in networking communication with the central control box;
the method is characterized in that: the central control box is provided with a central control PLC, a local control PLC, a plurality of central indication lamps and a plurality of central control buttons, the central indication lamps are controlled by the central control PLC, the central control buttons send operation instructions to the central control PLC, the cab control panel is in electric connection communication with the central control PLC, the central control PLC sends control instructions to the propulsion frequency converter, and the propulsion frequency converter controls the propulsion motor to drive the propeller to rotate;
the local control box comprises a plurality of local indicator lamps and a plurality of local control buttons, the local indicator lamps are controlled by the local control PLC, the local control buttons directly send operation instructions to the local control PLC, the local control PLC sends control instructions to the propulsion frequency converter, and the propulsion frequency converter controls the propulsion motor to drive the propeller to rotate.
2. A control system for marine ac electric propulsion as in claim 1, wherein: the cab control panel comprises a cab display, a cab control button, a dimming knob, an alarm lamp and a mechanical instrument panel, wherein the cab display, the cab control button, the dimming knob, the alarm lamp and the mechanical instrument panel are respectively and electrically connected with the central control PLC.
3. A control system for ac electric propulsion of a vessel according to claim 1 or 2, characterized in that: the central control box is also provided with a central display, and the central display is electrically connected with the central control PLC.
4. A control system for ac electric propulsion of a vessel according to claim 3, wherein: the central indicating lamps comprise a comprehensive alarm indicating lamp, a propulsion frequency conversion comprehensive fault indicating lamp, a control power supply indicating lamp, an emergency power supply indicating lamp, a local control indicating lamp, a remote control indicating lamp, a propulsion frequency conversion ready indicating lamp, a propulsion motor heating indicating lamp, a propulsion motor input indicating lamp, a heavy load permission indicating lamp and a propulsion motor operation indicating lamp.
5. A control system for marine ac electric propulsion as in claim 4, wherein: the plurality of central control buttons comprise a heavy load request button, a propulsion motor start button, a propulsion motor stop button, a propulsion variable frequency fault reset button, a propulsion motor heating button and a scram button.
6. A control system for ac electric propulsion of a vessel according to claim 3, wherein: the central control box is also provided with a power supply module, the input end of the power supply module is from an AC220V distribution box and a DC24V emergency charge-discharge board, the dual power supply inputs are redundant, and the power of the AC220V distribution box is obtained by driving a generator set to generate power by a prime motor.
7. A control system for marine ac electric propulsion as claimed in claim 6, wherein: the local control box further comprises a propulsion motor rotating speed instrument, a propulsion motor load instrument and a buzzer, and the propulsion motor rotating speed instrument, the propulsion motor load instrument and the buzzer are respectively connected and communicated with the local control PLC.
8. A control system for marine ac electric propulsion as in claim 7, wherein: the local indicator lamps comprise a control power indicator lamp, a remote control power indicator lamp, a local control indicator lamp, a propulsion motor running indicator lamp, a propulsion motor band-type brake indicator and a propulsion motor finishing indicator lamp.
9. A control system for marine ac electric propulsion as in claim 8, wherein: the local control buttons comprise a propulsion motor band-type brake button, a propulsion motor request button, a motor speed regulation button and an emergency stop button.
10. A control system for marine ac electric propulsion as in claim 9, wherein: the power supply of the local control box and the cab control panel comes from DC24V power supply provided by the central control box; the control surface of the cab establishes networking communication with the central control PLC through a Profinet bus; the inside of the local control box adopts a pure hard wire form to connect and communicate the propulsion motor rotating speed instrument, the propulsion motor load instrument, the buzzer, the local indicator lamps and the local control buttons with the local control PLC respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682301.1U CN219790505U (en) | 2023-03-30 | 2023-03-30 | Control system for alternating current electric propulsion of ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682301.1U CN219790505U (en) | 2023-03-30 | 2023-03-30 | Control system for alternating current electric propulsion of ship |
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| Publication Number | Publication Date |
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| CN219790505U true CN219790505U (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320682301.1U Active CN219790505U (en) | 2023-03-30 | 2023-03-30 | Control system for alternating current electric propulsion of ship |
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| Country | Link |
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| CN (1) | CN219790505U (en) |
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- 2023-03-30 CN CN202320682301.1U patent/CN219790505U/en active Active
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