A centralized control and monitoring system and control method for ship seawater piping systems

Abstract

This invention relates to the field of marine seawater piping system control technology, specifically to a centralized control and monitoring system and method for marine seawater piping systems. This invention enables remote, multi-level monitoring and control of the entire marine seawater system, allowing for timely understanding of the system's current status. This provides accurate data for the engine department's operation and maintenance, and enables timely decision-making regarding remote equipment operation or malfunctions, greatly improving the operability and maintainability of the seawater system. The invention utilizes a remote control system for the pneumatic butterfly valve in the main seawater pipe, a self-cleaning seawater filter monitoring system for monitoring the filter's operating status and self-cleaning control, and an anti-corrosion sleeve monitoring system for monitoring the anti-corrosion sleeve's operating status. These features allow for the immediate detection and handling of faulty components in the seawater system, ensuring the stable and normal operation of the entire marine seawater system.

Description

Technical Field

[0001] This invention relates to the field of marine seawater piping system control technology, specifically to a centralized control and monitoring system and control method for marine seawater piping systems. Background Technology

[0002] When ships are sailing, it is often necessary to operate the isolation valve of the seawater main. However, the isolation valve of the seawater main of existing ships is often located deep at the bottom of the engine room, which inevitably causes operational trouble. In case of emergencies, it is often difficult to open or close the seawater main in time. Or, if there are unexpected situations such as power outages or gas outages in the pipeline system, and there is no way to open or close the pipeline system, it will seriously affect the safety of the ship's navigation and may even lead to a major accident.

[0003] Meanwhile, self-cleaning seawater filters are also installed in the ship's seawater piping system. The working condition of the self-cleaning seawater filter directly affects the cooling status of actual equipment such as diesel engines, gearboxes, and air compressors. If the self-cleaning seawater filter becomes clogged, the seawater flow and pressure at the downstream end cannot be guaranteed, which in turn will compromise the cooling status of the equipment and lead to equipment damage.

[0004] Furthermore, in existing seawater piping systems equipped with anti-corrosion sleeves, it is usually only discovered that the sleeves have been completely worn out when a leak occurs. At this point, the protection of the anodic anode has been completely lost, leading to corrosion of the seawater piping system. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a centralized control and monitoring system and control method for ship seawater piping systems, which can realize remote hierarchical control of ship seawater systems. By remotely monitoring the working status of pneumatic valves, self-cleaning seawater filters and anti-corrosion sleeves of ship seawater piping systems, faulty links in the seawater system can be detected and dealt with in a timely manner, which greatly improves the operability and maintainability of the seawater system.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] I. A centralized control and monitoring system for ship seawater piping systems

[0008] This invention provides a centralized control and monitoring system for a ship's seawater piping system, which mainly includes: a remote control system for a pneumatic butterfly valve of the seawater main pipe, a monitoring system for a self-cleaning seawater filter, and a monitoring system for corrosion-resistant sleeves;

[0009] The remote control system for the pneumatic butterfly valve of the seawater main includes a pneumatic butterfly valve host computer module, a pneumatic butterfly valve control box module, and a pneumatic butterfly valve 4. The pneumatic butterfly valve 4 is installed at both ends of the seawater main 8 at the bottom of the ship's engine room. An isolation valve 9 is provided in the middle of the seawater main 8. The pneumatic butterfly valve 4 is connected to the pneumatic butterfly valve control box module through a signal line. The pneumatic butterfly valve control box module communicates remotely with the pneumatic butterfly valve host computer module.

[0010] The self-cleaning seawater filter monitoring system includes a filter host computer module, a filter control box module, and a self-cleaning seawater filter 3. The self-cleaning seawater filter 3 is installed between the pneumatic butterfly valve 4 and the sea valve 6 at both ends of the seawater main pipe 8. The self-cleaning seawater filter 3 is equipped with filter pressure sensors at both ends. The filter pressure sensors are all connected to the differential pressure transmitter 7. The self-cleaning seawater filter 3 and the differential pressure transmitter 7 are both connected to the filter control box module through signal lines. The filter control box module communicates remotely with the filter host computer module.

[0011] The anti-corrosion casing monitoring system includes a casing host computer module, a casing control box module, and an anti-corrosion casing 5. The anti-corrosion casing 5 is installed on the seawater main pipe 8 at both ends of the isolation valve 9, and a casing pressure sensor is installed on the anti-corrosion casing 5. The casing pressure sensor is connected to the casing control box module through a signal line, and the casing control box module communicates remotely with the casing host computer module.

[0012] The pneumatic butterfly valve host computer module, filter host computer module, and sleeve host computer module are all integrated in the remote seawater system monitoring station 1, while the pneumatic butterfly valve control box module, filter control box module, and sleeve control box module are all integrated in the on-site seawater system control box 2.

[0013] Furthermore, the seawater system control box 2 is provided with a compressed air inlet on its side. One end of the compressed air inlet is connected to a compressed air source of 0.7 to 1.0 MPa, and the other end is connected to the pneumatic butterfly valve 4 through a compressed air pipeline.

[0014] Furthermore, the front panel of the seawater system control box 2 is equipped with multiple operation buttons, indicator lights, a buzzer, a mute button, a power switch, and a remote / local mode switching switch, and a PLC controller is installed on top of the seawater system control box 2.

[0015] Furthermore, the pneumatic butterfly valve control box module is used to acquire the working status of the pneumatic butterfly valve 4 in real time and send it to the pneumatic butterfly valve host computer module. At the same time, the pneumatic butterfly valve control box module receives the control commands sent by the pneumatic butterfly valve host computer module in real time and controls the pneumatic butterfly valve 4 to perform the corresponding actions.

[0016] Furthermore, the filter control box module is used to acquire the working status of the self-cleaning seawater filter 3 in real time and send it to the filter host computer module. At the same time, the filter control box module receives the control commands sent by the filter host computer module in real time and controls the self-cleaning seawater filter 3 to perform corresponding actions.

[0017] Furthermore, the differential pressure transmitter 7 is used to acquire the pressure difference between the two ends of the self-cleaning seawater filter 3 in real time and send it to the filter host computer module. When the pressure difference exceeds the preset allowable range, the filter host computer module controls the corresponding buzzer on the seawater system control box 2 to issue an alarm, reminding the operator to maintain the self-cleaning seawater filter 3.

[0018] Furthermore, the casing control box module is used to acquire the pressure value borne by the outer ring of the anti-corrosion casing 5 in real time and send it to the casing host computer module. When the pressure value is greater than 0, it reminds the operator that the inner ring of the anti-corrosion casing 5 has been completely corroded and consumed. When the pressure value exceeds the preset pressure threshold, the casing host computer module controls the corresponding indicator light on the seawater system control box 2 to flash, reminding the operator to replace the anti-corrosion casing 5.

[0019] Furthermore, the self-cleaning seawater filter 3 and the pneumatic butterfly valve 4 are interlocked. When the self-cleaning motor of the self-cleaning seawater filter 3 is started, the corresponding pneumatic butterfly valve 4 is automatically closed.

[0020] Furthermore, the seawater system monitoring station 1 is specifically located in the remote ship command room, while the seawater system control box 2 is specifically installed in the ship's equipment room on-site via steel wire wall mounting.

[0021] II. A control method for a centralized control and monitoring system for ship seawater piping systems

[0022] Based on the same inventive concept, the present invention also provides a control method for the centralized control and monitoring system of ship seawater piping system as described above, specifically including the following steps:

[0023] S1, when the mode switching switch on the seawater system control box is in "remote control mode", the pneumatic butterfly valve and the self-cleaning seawater filter can be remotely controlled through the seawater system monitoring console.

[0024] S2, When the mode switching switch on the seawater system control box is in "local mode", the pneumatic butterfly valve and the self-cleaning seawater filter can be manually operated by the corresponding operation button on the control box.

[0025] S3, when the pressure difference between the two ends of the self-cleaning seawater filter exceeds the preset allowable range, both the monitoring console and the control box will issue a corresponding filter fault alarm to remind the operator to maintain the self-cleaning seawater filter;

[0026] S4. When the pressure sensor value of the outer ring of the anti-corrosion sleeve exceeds the preset pressure threshold, both the monitoring console and the control box will issue a corresponding sleeve fault alarm to remind the operator to replace the anti-corrosion sleeve.

[0027] S5, the self-cleaning seawater filter and the pneumatic butterfly valve are interlocked. When the pneumatic butterfly valve is open, the self-cleaning motor of the self-cleaning seawater filter is not allowed to operate; when the self-cleaning motor of the self-cleaning seawater filter starts, the corresponding pneumatic butterfly valve automatically switches to the closed state.

[0028] Compared with the prior art, the present invention has the following main advantages:

[0029] 1. This invention, through the combination of a remote control system for the pneumatic butterfly valve of the seawater main pipe, a monitoring system for the self-cleaning seawater filter, and a monitoring system for the anti-corrosion sleeve, can achieve remote multi-level monitoring and control of the entire ship's seawater system. It can promptly grasp the current status of the seawater system, provide accurate information for the operation and maintenance of the engine department, and enable timely decision-making for remote operation or faults of equipment, greatly improving the operability and maintainability of the seawater system.

[0030] 2. This invention enables remote control of the pneumatic butterfly valve in the seawater main pipe through a remote control system, monitors the working status and self-cleaning control of the seawater filter through a self-cleaning seawater filter monitoring system, and monitors the working status of the anti-corrosion sleeve through an anti-corrosion sleeve monitoring system. It can detect and address any faults in the seawater system in a timely manner, ensuring the stable and normal operation of the ship's seawater system. Attached Figure Description

[0031] Figure 1 This is an overall schematic diagram of the centralized control and monitoring system for ship seawater piping systems in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the seawater system control box in an embodiment of the present invention;

[0033] Figure 3 This is a flowchart of the control method of the centralized control and monitoring system for ship seawater piping systems in an embodiment of the present invention.

[0034] In the diagram: 1-Seawater system monitoring console, 2-Seawater system control box, 3-Self-cleaning seawater filter, 4-Pneumatic butterfly valve, 5-Anti-corrosion sleeve, 6-Seawater valve, 7-Differential pressure transmitter, 8-Seawater main pipe, 9-Isolation valve. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0036] It should be noted that, depending on the implementation needs, the various steps / components described in this application can be broken down into more steps / components, or two or more steps / components or parts of the operation of steps / components can be combined into new steps / components to achieve the purpose of this invention.

[0037] Example 1: This example provides a centralized control and monitoring system for ship seawater piping systems, such as... Figure 1 As shown, it mainly consists of a remote control system for the pneumatic butterfly valve of the seawater main, a monitoring system for the self-cleaning seawater filter, and a monitoring system for the anti-corrosion sleeve, realizing remote hierarchical control of the ship's seawater system.

[0038] The seawater main pneumatic butterfly valve remote control system consists of a host computer, a control box module, and a pneumatic butterfly valve. The host computer can be independent or embedded in a monitoring console, serving as the control center of the centralized seawater control and monitoring system. The control box module is located in a control box, which is wall-mounted via steel wire, and serves as the mid-range control center of the seawater main isolation valve remote control system. The pneumatic butterfly valve is connected to the control box module via opening and closing circuits and is placed at both ends of the seawater main at the bottom of the ship's engine room, serving as the actuator of the seawater main pneumatic butterfly valve remote control system.

[0039] The pneumatic butterfly valve can be remotely controlled via a seawater monitoring station, remotely controlled via a mid-range control box, or operated locally by the valve itself in the event of a power failure.

[0040] Furthermore, the self-cleaning seawater filter monitoring system comprises a host computer, a control box module, a self-cleaning seawater filter, and pressure sensors before and after the filter. The host computer can be independent or embedded in a central control console, serving as the monitoring hub of the seawater filter monitoring system. The control box module is located within a control box, which is wall-mounted via steel wire, and serves as the mid-range monitoring center of the seawater filter monitoring system. The self-cleaning seawater filter is connected to the host computer via control lines, and the filter pressure sensor is connected to the host computer via a differential pressure transmitter. The self-cleaning seawater filter is located after the sea valve, and the filter pressure sensor is placed before and after the self-cleaning seawater filter, providing input for the control box and the host computer's control, monitoring, and alarm functions.

[0041] The differential pressure transmitter's calibration value is used to confirm whether the actual differential pressure is within the allowable range; if it exceeds the tolerance, an alarm is issued. By monitoring and alarming the filter differential pressure in the control box and host computer, direct suggestions are provided for actual maintenance, facilitating timely cleaning by the engine department.

[0042] Furthermore, the corrosion-resistant casing monitoring system consists of a host computer, a control box module, corrosion-resistant casing, and casing pressure sensor. The host computer can be independent or embedded in the central control console, serving as the control hub of the centralized control system for the seawater system. The casing pressure sensor is connected to the host computer via a monitoring line and is placed on the corrosion-resistant casing in the flange of the seawater pipeline, providing input for the host computer's monitoring and alarm functions.

[0043] When the casing pressure sensor has a pressure reading, it indicates that the inner casing has been completely corroded. The actual pressure is confirmed to be within the allowable range by checking the calibration value of the pressure controller. If it exceeds the tolerance, an alarm is issued. The control box and central control console will issue an alarm to remind the engine department to replace the anti-corrosion casing in time to ensure that the anti-electrochemical corrosion measures are always in place.

[0044] Specifically, the seawater system control box 2 is provided with a compressed air inlet on its side. One end of the compressed air inlet is connected to a compressed air source of 0.7 to 1.0 MPa, and the other end is connected to the pneumatic butterfly valve 4 through a compressed air pipeline.

[0045] Furthermore, the front panel of the seawater system control box 2 is equipped with multiple operation buttons, indicator lights, a buzzer, a mute button, a power switch, and a remote / local mode switching switch, and a PLC controller is installed on top of the seawater system control box 2.

[0046] Furthermore, the pneumatic butterfly valve control box module is used to acquire the working status of the pneumatic butterfly valve 4 in real time and send it to the pneumatic butterfly valve host computer module. At the same time, the pneumatic butterfly valve control box module receives the control commands sent by the pneumatic butterfly valve host computer module in real time and controls the pneumatic butterfly valve 4 to perform the corresponding actions.

[0047] Furthermore, the filter control box module is used to acquire the working status of the self-cleaning seawater filter 3 in real time and send it to the filter host computer module. At the same time, the filter control box module receives the control commands sent by the filter host computer module in real time and controls the self-cleaning seawater filter 3 to perform corresponding actions.

[0048] Furthermore, the differential pressure transmitter 7 is used to acquire the pressure difference between the two ends of the self-cleaning seawater filter 3 in real time and send it to the filter host computer module. When the pressure difference exceeds the preset allowable range, the filter host computer module controls the corresponding buzzer on the seawater system control box 2 to issue an alarm, reminding the operator to maintain the self-cleaning seawater filter 3.

[0049] Furthermore, the casing control box module is used to acquire the pressure value borne by the outer ring of the anti-corrosion casing 5 in real time and send it to the casing host computer module. When the pressure value is greater than 0, it reminds the operator that the inner ring of the anti-corrosion casing 5 has been completely corroded and consumed. When the pressure value exceeds the preset pressure threshold, the casing host computer module controls the corresponding indicator light on the seawater system control box 2 to flash, reminding the operator to replace the anti-corrosion casing 5.

[0050] Furthermore, the self-cleaning seawater filter 3 and the pneumatic butterfly valve 4 are interlocked. When the self-cleaning motor of the self-cleaning seawater filter 3 is started, the corresponding pneumatic butterfly valve 4 is automatically closed.

[0051] Furthermore, the seawater system monitoring station 1 is specifically located in the remote ship command room, while the seawater system control box 2 is specifically installed in the ship's equipment room on-site via steel wire wall mounting.

[0052] Example 2: This example provides a centralized control and monitoring system for a ship's seawater piping system, which mainly consists of a seawater system monitoring console 1, a seawater system control box 2, a self-cleaning seawater filter 3, a pneumatic butterfly valve 4, a corrosion-resistant sleeve 5, and a differential pressure transmitter 7.

[0053] The control box 2, wall-mounted via steel wire, serves as the mid-range control center of the seawater system. The seawater system monitoring console 1, located in the centralized control room, is the remote control center of the seawater system. The pneumatic butterfly valve 4, connected to the control box 2 via control lines, is located on the seawater main pipe and serves as the actuator for opening and closing the seawater main pipe. The self-cleaning seawater filter 3, connected to the control box 2 via control lines, is located on the seawater main pipe and serves as the first stage of seawater filtration. The anti-corrosion sleeve 5, connected to the control box 2 via monitoring lines, is located on the seawater pipe and serves as the sacrificial anode for the seawater pipeline, preventing electrochemical corrosion of the seawater pipeline.

[0054] like Figure 2 As shown, the control box 2 is equipped with a compressed air inlet, PLC, solenoid valve group, pressure controller, differential pressure transmitter, indicator lights, buzzer, start button, mute button, power switch, etc. The control box has a power indicator, remote control and local modes. In case of an alarm, the alarm can be silenced by pressing the mute button.

[0055] The control box 2 contains a built-in solenoid valve assembly that controls the flow of compressed air. The compressed air inlet is connected to compressed air at a pressure of 0.7–1.0 MPa. Indicator lights are located on the outer surface of the control box 2, displaying the open and closed status of the pneumatic butterfly valve 4. A buzzer is located next to the indicator lights; when the pneumatic butterfly valve 4 fails to operate normally, the fault light illuminates and an alarm sounds, which can be silenced and reset using a mute button. The control PLC is located on the outer surface of the control box 2, with one end connected to the seawater system monitoring station and the other end connected to various components of the pneumatic butterfly valve 4. It is a module installed on the control box 2 for transmitting and receiving signals from the computer, enabling communication with the monitoring station. This allows the monitoring station to remotely receive alarm and control signals and remotely operate the pneumatic valve.

[0056] The control box 2 contains an internal switch that controls the start and stop of the self-cleaning seawater filter motor and displays its status. When the pressure differential of the seawater filter is high, an audible and visual alarm will sound, reminding staff to perform a self-cleaning operation. During the self-cleaning operation, an interlock signal is generated. At this time, the pneumatic valve connected to the self-cleaning seawater filter should be closed; otherwise, the self-cleaning motor will not be able to start due to the interlock signal. The actual design considers that the pneumatic valve automatically closes when the motor starts. At this time, the entire seawater system is in a non-operating state.

[0057] Furthermore, the differential pressure transmitters before and after the filter can obtain the real-time differential pressure values ​​before and after the filter, thereby determining the current working status of the filter and whether self-cleaning is required. When the filter differential pressure exceeds 0.1 MPa, it indicates that the seawater filter is severely clogged, triggering an audible and visual alarm to prompt immediate shutdown and filter cleaning. The control PLC is located on the outer surface of control box 2. One end is connected to the seawater system monitoring console, and the other end is connected to the pressure gauge and motor of the self-cleaning seawater filter 3. It is a module installed on control box 2 for transmitting and receiving signals from the computer, enabling communication with the monitoring console. This allows the monitoring console to remotely receive alarm and control signals and remotely operate the self-cleaning seawater filter.

[0058] In the control box 2, the pressure controller interacts with the pressure sensor of the anti-corrosion sleeve 3 to receive the pressure value sent by the anti-corrosion sleeve pressure sensor. When the seawater pressure exceeds 0.2 MPa, it indicates that the inner sleeve of the anti-corrosion sleeve has been largely corroded and urgently needs replacement. An audible and visual alarm is issued to prompt the replacement of the anti-corrosion sleeve. The control PLC is located on the outer surface of the control box 2. One end of its PLC is connected to the seawater system monitoring station, and the other end is connected to the pressure controller of the anti-corrosion sleeve. It is a module for transmitting and receiving signals from the computer on the control box 2, enabling communication with the monitoring station. This allows the monitoring station to remotely receive alarm signals, monitor the corrosion status through readings, and replace the anti-corrosion sleeve before a pressure alarm occurs based on experience.

[0059] Furthermore, the control box 2 can simultaneously monitor multiple pneumatic butterfly valves, multiple self-cleaning seawater filters, and multiple anti-corrosion sleeves.

[0060] Example 3: Based on the same inventive concept, this example also provides a control method for the centralized control and monitoring system of the ship's seawater piping system as described above, such as... Figure 3 As shown, the specific steps include the following:

[0061] S1, when the mode switching switch on the seawater system control box is in "remote control mode", the pneumatic butterfly valve and the self-cleaning seawater filter can be remotely controlled through the seawater system monitoring console.

[0062] S2, When the mode switching switch on the seawater system control box is in "local mode", the pneumatic butterfly valve and the self-cleaning seawater filter can be manually operated by the corresponding operation button on the control box.

[0063] S3, when the pressure difference between the two ends of the self-cleaning seawater filter exceeds the preset allowable range, both the monitoring console and the control box will issue a corresponding filter fault alarm to remind the operator to maintain the self-cleaning seawater filter;

[0064] S4. When the pressure sensor value of the outer ring of the anti-corrosion sleeve exceeds the preset pressure threshold, both the monitoring console and the control box will issue a corresponding sleeve fault alarm to remind the operator to replace the anti-corrosion sleeve.

[0065] S5, the self-cleaning seawater filter and the pneumatic butterfly valve are interlocked. When the pneumatic butterfly valve is open, the self-cleaning motor of the self-cleaning seawater filter is not allowed to operate; when the self-cleaning motor of the self-cleaning seawater filter starts, the corresponding pneumatic butterfly valve automatically switches to the closed state.

[0066] Furthermore, when the pressure difference of the self-cleaning seawater filter is ≥0.1MPa, the control box or monitoring station will issue an audible and visual alarm to remind staff to perform a self-cleaning operation on the seawater filter.

[0067] Furthermore, during the self-cleaning operation of the self-cleaning seawater filter, an interlock occurs. At this time, the pneumatic valve connected to the self-cleaning seawater filter should be closed; otherwise, the self-cleaning motor will not be able to start due to the interlock signal. The actual design automatically closes the pneumatic valve when the motor starts. At this point, the entire seawater system is in a non-operating state.

[0068] Furthermore, all parts of this application that are not described in detail are the same as or implemented using existing technology.

[0069] In summary:

[0070] 1. This invention, through the combination of a remote control system for the pneumatic butterfly valve of the seawater main pipe, a monitoring system for the self-cleaning seawater filter, and a monitoring system for the anti-corrosion sleeve, can achieve remote multi-level monitoring and control of the entire ship's seawater system. It can promptly grasp the current status of the seawater system, provide accurate information for the operation and maintenance of the engine department, and enable timely decision-making for remote operation or faults of equipment, greatly improving the operability and maintainability of the seawater system.

[0071] 2. This invention enables remote control of the pneumatic butterfly valve in the seawater main pipe through a remote control system, monitors the working status and self-cleaning control of the seawater filter through a self-cleaning seawater filter monitoring system, and monitors the working status of the anti-corrosion sleeve through an anti-corrosion sleeve monitoring system. It can detect and address any faults in the seawater system in a timely manner, ensuring the stable and normal operation of the ship's seawater system.

[0072] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A centralized control and monitoring system for ship seawater piping systems, characterized in that, This includes a remote control system for the pneumatic butterfly valve of the seawater main, a monitoring system for the self-cleaning seawater filter, and a monitoring system for the anti-corrosion sleeve; The remote control system for the pneumatic butterfly valve of the seawater main includes a pneumatic butterfly valve host computer module, a pneumatic butterfly valve control box module, and a pneumatic butterfly valve (4). The pneumatic butterfly valve (4) is installed at both ends of the seawater main (8) at the bottom of the ship's engine room. An isolation valve (9) is provided in the middle of the seawater main (8). The pneumatic butterfly valve (4) is connected to the pneumatic butterfly valve control box module through a signal line. The pneumatic butterfly valve control box module communicates remotely with the pneumatic butterfly valve host computer module. The self-cleaning seawater filter monitoring system includes a filter host computer module, a filter control box module, and a self-cleaning seawater filter (3). The self-cleaning seawater filter (3) is installed between the pneumatic butterfly valve (4) and the sea valve (6) at both ends of the seawater main pipe (8). The self-cleaning seawater filter (3) is equipped with filter pressure sensors at both ends. The filter pressure sensors are connected to the differential pressure transmitter (7). The self-cleaning seawater filter (3) and the differential pressure transmitter (7) are connected to the filter control box module through signal lines. The filter control box module communicates remotely with the filter host computer module. The anti-corrosion casing monitoring system includes a casing host computer module, a casing control box module, and an anti-corrosion casing (5). The anti-corrosion casing (5) is installed on the seawater main pipe (8) at both ends of the isolation valve (9), and a casing pressure sensor is provided on the anti-corrosion casing (5). The casing pressure sensor is connected to the casing control box module through a signal line. The casing control box module communicates remotely with the casing host computer module. The pneumatic butterfly valve host computer module, filter host computer module, and sleeve host computer module are all integrated in the remote seawater system monitoring station (1), and the pneumatic butterfly valve control box module, filter control box module, and sleeve control box module are all integrated in the on-site seawater system control box (2).

2. The centralized control and monitoring system for ship seawater piping systems according to claim 1, characterized in that, The seawater system control box (2) is provided with a compressed air inlet on the side. One end of the compressed air inlet is connected to a compressed air source of 0.7 to 1.0 MPa, and the other end is connected to the pneumatic butterfly valve (4) through a compressed air pipeline.

3. The centralized control and monitoring system for ship seawater piping systems according to claim 1, characterized in that, The front panel of the seawater system control box (2) is equipped with multiple operation buttons, indicator lights, buzzers, mute buttons, power switches and remote / local mode switching switches, and a PLC controller is installed on the top of the seawater system control box (2).

4. The centralized control and monitoring system for ship seawater piping systems according to claim 1, characterized in that, The pneumatic butterfly valve control box module is used to acquire the working status of the pneumatic butterfly valve (4) in real time and send it to the pneumatic butterfly valve host computer module. At the same time, the pneumatic butterfly valve control box module receives the control commands sent by the pneumatic butterfly valve host computer module in real time and controls the pneumatic butterfly valve (4) to perform the corresponding actions.

5. The centralized control and monitoring system for ship seawater piping systems according to claim 1, characterized in that, The filter control box module is used to acquire the working status of the self-cleaning seawater filter (3) in real time and send it to the filter host computer module. At the same time, the filter control box module receives the control commands sent by the filter host computer module in real time and controls the self-cleaning seawater filter (3) to perform the corresponding actions.

6. The centralized control and monitoring system for ship seawater piping systems according to claim 5, characterized in that, The differential pressure transmitter (7) is used to acquire the pressure difference between the two ends of the self-cleaning seawater filter (3) in real time and send it to the filter host computer module. When the pressure difference exceeds the preset allowable range, the filter host computer module controls the corresponding buzzer on the seawater system control box (2) to issue an alarm, reminding the operator to maintain the self-cleaning seawater filter (3).

7. The centralized control and monitoring system for ship seawater piping systems according to claim 1, characterized in that, The casing control box module is used to acquire the pressure value of the outer ring of the anti-corrosion casing (5) in real time and send it to the casing host computer module. When the pressure value is greater than 0, the operator is reminded that the inner ring of the anti-corrosion casing (5) has been completely corroded and consumed. When the pressure value exceeds the preset pressure threshold, the casing host computer module controls the corresponding indicator light on the seawater system control box (2) to flash, reminding the operator to replace the anti-corrosion casing (5).

8. The centralized control and monitoring system for ship seawater piping systems according to claim 1, characterized in that, The self-cleaning seawater filter (3) and the pneumatic butterfly valve (4) are interlocked. When the self-cleaning motor of the self-cleaning seawater filter (3) is started, the corresponding pneumatic butterfly valve (4) is automatically closed.

9. The centralized control and monitoring system for ship seawater piping systems according to claim 1, characterized in that, The seawater system monitoring station (1) is specifically located in the remote ship command room, and the seawater system control box (2) is specifically installed in the ship equipment room on site by hanging it on the wall with steel wire.

10. A control method for a centralized control and monitoring system for a ship's seawater piping system as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1, when the mode switch on the seawater system control box is in "remote control mode", the pneumatic butterfly valve and the self-cleaning seawater filter can be remotely controlled through the seawater system monitoring console. S2, when the mode switching switch on the seawater system control box is in "local mode", the pneumatic butterfly valve and the self-cleaning seawater filter can be manually operated by the corresponding operation button on the control box. S3, when the pressure difference between the two ends of the self-cleaning seawater filter exceeds the preset allowable range, both the monitoring console and the control box will issue a corresponding filter fault alarm to remind the operator to maintain the self-cleaning seawater filter; S4. When the pressure sensor value of the outer ring of the anti-corrosion sleeve exceeds the preset pressure threshold, both the monitoring console and the control box will issue a corresponding sleeve fault alarm to remind the operator to replace the anti-corrosion sleeve. S5, the self-cleaning seawater filter and the pneumatic butterfly valve are interlocked. When the pneumatic butterfly valve is open, the self-cleaning motor of the self-cleaning seawater filter is not allowed to operate; when the self-cleaning motor of the self-cleaning seawater filter starts, the corresponding pneumatic butterfly valve automatically switches to the closed state.

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