KR102468690B1 - Ship exhaust gas scrubber simulation test system - Google Patents

Abstract

The present invention relates to a simulation system for a ship exhaust gas scrubber that builds a simulation model for a scrubber process and related equipment of a ship connected thereto in a PLC to correspond to the input and output of the ship exhaust gas scrubber, and is connected to a control terminal and is connected to an analog simulated signal. and a control unit that stores digital simulated signals and performs all functions related to simulated signals; an input unit for inputting a simulation signal for a simulation test subject; a simulator generating a simulation by receiving the simulation signal input to the input unit; And a communication unit that communicates an output value according to the simulated signal; wherein the simulator checks whether the control is accurate based on a design value of a control program according to load variations of the exhaust gas cleaner and related equipment physically connected thereto, The technical point is to determine whether the shut-down function of the monitoring and alarm is working normally by returning the change value of temperature, flow rate, pressure, etc. of each changing process as an electrical signal.

Description

Ship exhaust gas scrubber simulation test system}

The present invention relates to a simulation system for a ship exhaust gas cleaner including an input/output device for transmitting electrical signals of a simulation modeling program including a ship exhaust gas cleaner and related processes.

In general, when developing equipment that interlocks with equipment mounted on a ship, it is often necessary to develop equipment in connection with equipment actually used in a ship, resulting in time and economic difficulties.

Due to the characteristics of expensive equipment used in ships, various equipment must be developed using actual output data, so it takes a lot of cost and time for ship rental, operation, and various developments.

Meanwhile, from 2020, according to IMO regulations, the amount of SOx emitted through the exhaust gas of all ships around the world is limited to 0.5% or less, and in some coastal areas, the amount is limited to 0.1% or less. Therefore, it is necessary to use low-sulfur oil, install an exhaust gas scrubber, or use liquefied natural gas as fuel during the voyage.

Newly built ships can satisfy this regulation by applying propulsion and fuel systems with various options according to this regulation, but existing ships use low or high sulfur oil and install an exhaust gas scrubber to meet the regulation. can satisfy As a result, it is known that there are about 60,000 existing ships that must satisfy this regulation in any form.

If quality defects occur during the installation supervision and trial run of the scrubber, the delivery of the vessel is delayed, and even after delivery, the trial run is conducted again to check the performance, and huge costs are paid, resulting in huge time and economic losses.

Therefore, if there is a simulation test system capable of outputting the same signal as the signal of the cleaner and related equipment, it is possible to solve a significant part of the time and economic loss, which is the above problem.

However, existing simulation systems have software and hardware that output only normal signals of simulation equipment, but cannot output signals for abnormal (error) signals, so there is no processing method for this.

In particular, the problems of the current simulation test system are as follows.

First, a switch and a lamp are connected to the digital input/output device, and the inspector sees whether the lamp is blinking, and the inspector manipulates the related switch to give feedback and perform a single-acting test to see if the intended function appears.

Second, a 4-20mA signal generator and an analog indicator are connected to the analog input/output device to test the value of the measurement range using the signal generator for power/temperature/level, etc., and to test the alarm value, and the analog output The test should be replaced with the work of checking whether the value output to the indicator is a normal value.

Third, the safety level in the monitoring part can be inspected, and single-acting control tests can be performed manually, but the fully automatic control part of the ship washer is operated manually using switches, lamps, signal generators, and indicators. Pre-examination is not possible with this method.

Fourth, after all, the current simulation system program is being shipped without accurate reliability testing at the factory, and if unexpected interference or program errors are found during trial operation at the installation site, the error can be corrected through corrective work. are correcting Therefore, as the process of repeating the test after the modification work is repeated, the test run period is longer than expected, and the customer's distrust is caused.

KR 10-0434639 B1 KR 10-0456413 B1 KR 10-0632796 B1

An object of the present invention to solve the problems derived from the foregoing background art is to provide a simulation system for a marine exhaust gas scrubber that enables a single-acting inspection as well as an integrated automatic control program to be inspected at a perfect level.

Specifically, the object of the present invention, the signal output simulation test system is to obtain the output signal in the same signal form and signal specification as in the ship, thereby establishing the same environment as in the actual ship, so that the signal between the simulated equipment and the interlocking equipment It is to provide a simulation system for a ship exhaust gas scrubber that can predict and implement signal processing.

On the other hand, the object of the present invention is not limited to the purpose mentioned above, and other objects not mentioned will be clearly understood from the description below.

The above object is, according to an embodiment of the present invention, in a simulation system for a ship exhaust gas scrubber that builds a simulation model for a scrubber process and related equipment of a ship connected to the PLC to correspond to the input and output of the ship exhaust gas scrubber. , A controller connected to the control terminal, storing analog simulated signals and digital simulated signals, and performing all functions related to simulated signals; an input unit for inputting a simulation signal for a simulation test subject; a simulator generating a simulation by receiving the simulation signal input to the input unit; And it can be achieved by a simulation system for a ship exhaust gas cleaner comprising a; communication unit for communicating an output value according to the simulated signal.

In particular, the simulator checks whether or not the control is accurate based on the design value of the control program according to the load variation of the exhaust gas cleaner and related equipment physically connected thereto, and determines whether the temperature, flow rate, pressure, etc. of each process are changed. It is characterized in that the changed value is returned as an electrical signal, and based on this, it is characterized in determining whether the shutdown function of the monitoring and alarm is normally operated.

In addition, the simulator includes a feedback generation module for generating feedback required for dynamic operation in the same way as the actual configuration by simulating each configuration operating according to the simulated signal of the control unit, and an exhaust gas cleaning process according to the operation of each configuration. A physical change measurement module that generates changes in the pressure, temperature, turbidity, and acidity of the washing water, and a notification signal generation module that generates a notification signal according to an abnormal situation scenario to check the safety function of each component. characterized by

In addition, the simulator simulates manual operation or automatic operation according to commands given in the process of the exhaust gas scrubber, calculates variables that change according to a certain situation, and related equipment physically connected to the exhaust gas scrubber. It is characterized in that it calculates the change in pressure, temperature and liquid level according to the change in trajectory of the seawater valve, which changes according to the change in the load of the load, and the change in acidity and turbidity of discharged water and supply water accordingly.

In addition, the simulator includes a display module for displaying a normal state, an abnormal state, and a warning state of the exhaust gas cleaner and related equipment physically connected thereto, a normal state of the exhaust gas cleaner and related equipment physically connected thereto, It is characterized in that it further comprises a manipulation module capable of adjusting the abnormal state and the warning state.

Furthermore, the simulator generates scenarios to sequentially test the alarm system and safety system of each component operating according to the simulation signal of the control unit according to abnormal situations, and simulates the abnormal situations according to the scenarios. to be

According to the present invention according to the above embodiment, the following effects can be expected.

First, it is possible to simulate the equipment being developed without purchasing the equipment that is linked to the equipment being developed through simulation outputting the settlement signal and the abnormal signal output from the exhaust gas scrubber for ships and related equipment, thereby reducing the development period. And cost reduction has the effect of enabling more effective equipment development.

Second, by configuring the process of the exhaust gas cleaner for ships and the process of related ship equipment in software and configuring the input/output device connected thereto, there is an effect of improving inspection reliability and shortening the commissioning time after installation in the field.

Third, there is an effect of minimizing errors in the program function of each equipment and parameter setting errors in the system by establishing a simulation model for the scrubber process and related equipment of the industrial plant in PLC to correspond to the input and output of the exhaust gas scrubber for ships. have.

1 is a block diagram schematically showing a simulation system for a marine exhaust gas scrubber according to an embodiment of the present invention;
2 to 16 are flowcharts showing the operation principle of the simulator according to each embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only the present embodiments make the disclosure of the present invention complete, and those skilled in the art in the art to which the present invention belongs It is provided to fully inform the person of the scope of the invention. And terms used in this specification are for describing the embodiments, and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated otherwise in the phrase.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. On the other hand, the drawings and detailed descriptions of configurations and their actions and effects, which can be easily known by those skilled in the art, are simplified or omitted, and will be described in detail focusing on parts related to the present invention.

1 is a block diagram schematically showing a simulation system for a marine exhaust gas scrubber according to an embodiment of the present invention.

A simulation test system for a ship exhaust gas scrubber according to an embodiment of the present invention is to build a simulation model for a scrubber process and related equipment of a ship connected thereto in a PLC to correspond to the input and output of the exhaust gas scrubber for a ship, largely a control unit and an input unit. And it is configured to include a simulator and a communication unit.

First, the control unit is connected to a control terminal, stores analog simulated signals and digital simulated signals in a database, and performs all functions related to simulated signals.

The simulated signals stored in the database of the controller are stored in the form of normal signals, abnormal signals, and warning signals by processing signals output from each corresponding equipment, and the control terminal is connected to the CPU board to connect the simulator and external Data can be linked and provided.

The input unit inputs a simulated signal for a simulated test subject, and various signals and digital items such as reaching a state can be operated with buttons, and analog items such as temperature and pressure can be operated with a jog dial type.

The communication unit may communicate an output value according to a simulated signal and communicate with all components electrically connected in the system.

Next, the simulator generates a simulation by receiving the simulation signal input to the input unit, and according to the load variation of the exhaust gas scrubber and related equipment physically connected thereto (ship main engine, generator engine, boiler, etc.) Based on the design value of the control program, it checks whether the control is accurate, and returns the change value of temperature, flow rate, pressure, etc. of each process as an electrical signal. can do.

In addition, the simulator includes a feedback generation module for generating feedback required for dynamic operation in the same way as the actual configuration by simulating each configuration operating according to the simulated signal of the control unit, and an exhaust gas cleaning process according to the operation of each configuration. Including a physical change measurement module that generates changes in pressure, temperature, turbidity, and acidity of washing water, and a notification signal generation module that generates a notification signal according to an abnormal situation scenario to check the safety function of each component can be configured. Here, in the feedback generation module, the feedback may be an opening angle of a valve disc or damper, operation of a pump, discharge pressure, and the like.

In addition, the simulator simulates manual operation or automatic operation according to commands given in the process of the exhaust gas scrubber, calculates variables that change according to a certain situation, and related equipment physically connected to the exhaust gas scrubber. It is possible to calculate the change in pressure, temperature and liquid level according to the change in trajectory of the seawater valve, which changes according to the load change of

In addition, the simulator includes a display module for displaying a normal state, an abnormal state, and a warning state of the exhaust gas cleaner and related equipment physically connected thereto, a normal state of the exhaust gas cleaner and related equipment physically connected thereto, It may be configured to further include a manipulation module capable of adjusting the abnormal state and the warning state. Here, the display state of the display module may be displayed in color, and a warning state may be displayed in red, an abnormal state in yellow, and a normal state in green.

Furthermore, the simulator generates scenarios to sequentially test the alarm system and safety system of each component operating according to the simulation signal of the control unit according to abnormal situations, and simulates the abnormal situations according to the scenarios. to be For example, abnormal situations such as abnormal operation of the flushing water discharge valve, abnormal stoppage of supply of flushing water, abnormal stoppage of the flushing water supply pump, and occurrence of abnormal occurrences of exhaust gas bypass damper and shield air fan can be simulated.

In addition, the simulator generates a normal feedback signal for each equipment in the process according to the sequence of the automatic control program, and generates an abnormal feedback signal for each sequence according to the sequence to check the intended automatic control function and operation of the stabilizer.

On the other hand, the present invention can design and manufacture hardware with a PLC module including a CPU and an input/output device, and a digital/analog input/output device of about 300 points, a PLC power supply device for driving it, and a HMI with an inspector. It can be configured as a display device. In addition, a module that simulates the functions of auxiliary equipment (gas analyzer, washing water analyzer, CPS, etc.) connected by communication can be implemented in a computer.

2 to 16 are flowcharts showing the operation principle of the simulator according to each embodiment of the present invention, and reference can be made to describe the embodiment of the present invention in detail.

Here, Fig. 2 is an OPEN MODE START flowchart, Fig. 3 is a CLOSE MODE START flowchart, Fig. 4 is an OPEN TO COLSE MODE CHANGE flowchart, Fig. 5 is a CLOSE TO OPEN MODE CHANGE flowchart, and Fig. 6 is a SCRUBBER SYSTEM RUN flowchart, FIG. 7 is an OPEN MODE STOP flowchart, FIG. 8 is a CLOSE MODE ZERO DISCHARGE MODE STOP flowchart, FIG. 9 is a CLOSE MODE STOP flowchart, FIG. 10 is an EMERGENCY SHUT DOWN flowchart, FIG. 11 is an ALKALI SUPPLY SYSTEM flowchart, FIGS. 12 to 15 are WATER TREATMENT UNIT OPERATION flowcharts, and FIG. 16 is a PROCESS TANK LEVEL CONTROL flowchart.

According to the embodiments of the present invention described so far, the following effects can be expected.

First, it is possible to simulate the equipment being developed without purchasing the equipment that is linked to the equipment being developed through simulation outputting the settlement signal and the abnormal signal output from the exhaust gas scrubber for ships and related equipment, thereby reducing the development period. And cost reduction has the effect of enabling more effective equipment development.

Second, by configuring the process of the exhaust gas cleaner for ships and the process of related ship equipment in software and configuring the input/output device connected thereto, there is an effect of improving inspection reliability and shortening the commissioning time after installation in the field.

Third, there is an effect of minimizing errors in the program function of each equipment and parameter setting errors in the system by establishing a simulation model for the scrubber process and related equipment of the industrial plant in PLC to correspond to the input and output of the exhaust gas scrubber for ships. have.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the scope of the invention which follows may be better understood. Those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. The scope of the present invention is indicated by the appended claims rather than the detailed description above, and all changes or modifications derived from the claims and equivalent concepts should be construed as being included in the scope of the present invention.

Claims (5)

delete In a simulation test system for a ship exhaust gas scrubber that builds a simulation model for the main engine, generator engine and boiler of a ship connected to the scrubber process and the main engine, generator engine and boiler connected to the PLC to correspond to the input and output of the ship exhaust gas scrubber,
A controller connected to the control terminal, storing analog simulated signals and digital simulated signals, and performing all functions related to simulated signals;
an input unit for inputting a simulation signal for a simulation test subject;
a simulator generating a simulation by receiving the simulation signal input to the input unit; and
It includes; a communication unit for communicating an output value according to the simulated signal;
The simulator,
Accurate control is confirmed based on the design value of the control program according to load variations of the exhaust gas scrubber and the main engine, generator engine, and boiler physically connected thereto, and changes in temperature, flow rate, and pressure of the scrubber process are checked. is returned as an electrical signal, and based on this, it is determined whether the shutdown function of the monitoring and alarm works normally,
A feedback generation module that simulates the main engine, generator engine, and boiler operating according to the simulated signal of the control unit to generate feedback necessary for dynamic operation in the same way as the actual configuration, and for operation of the main engine, generator engine, and boiler A physical change measurement module that generates changes in the pressure, temperature, turbidity, and acidity of the washing water in the exhaust gas scrubber process according to A simulation system for a ship exhaust gas scrubber comprising a notification signal generating module that generates a. According to claim 2,
The simulator,
Simulation of manual operation or automatic operation according to the command given in the process of the exhaust gas scrubber, calculating variables that change according to a pre-specified situation,
Changes in pressure, temperature, and liquid level according to changes in trajectories of seawater valves that change according to load changes of the main engine, generator engine, and boiler physically connected to the exhaust gas scrubber, and the resulting change in acidity and turbidity of discharged water and supply water A simulation test system for a marine exhaust gas scrubber, characterized in that for calculating. According to claim 2,
The simulator,
A display module for displaying the normal state, abnormal state, and warning state of the exhaust gas scrubber and the main engine, generator engine, and boiler physically connected thereto;
A simulation test system for a marine exhaust gas scrubber, characterized in that it further comprises a control module capable of adjusting the normal state, abnormal state, and warning state of the exhaust gas scrubber and the main engine, generator engine, and boiler physically connected thereto. According to claim 4,
The simulator,
Generating scenarios to sequentially test the alarm system and safety system of the main engine, generator engine, and boiler operating according to the simulation signal of the control unit according to abnormal situations, and simulating abnormal situations according to the scenarios Characterized in that A simulation test system for a ship exhaust gas scrubber.

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