CN-122009430-A - Control system for automatic ballast water replacement

CN122009430ACN 122009430 ACN122009430 ACN 122009430ACN-122009430-A

Abstract

The invention discloses a control system for automatic ballast water replacement, which comprises a control unit, an execution unit and a communication unit, wherein the execution unit is respectively connected with the control unit and the communication unit. The ship stress prediction module and the monitoring alarm module are added, so that the ship can not only predict the possible ground risk caused by corresponding operation in advance, but also alarm timely when the risk comes, and the ship has the characteristics of high reliability and intelligence.

Inventors

REN ZHONGJIE
YANG JIE
XUE TING
GAO YANXIA
ZHANG SHU
MA GUOLIANG
TIAN YULIANG
CHEN LEI

Assignees

沪东中华造船(集团)有限公司

Dates

Publication Date: 20260512
Application Date: 20260319

Claims (4)

1. The control system for automatic ballast water replacement is characterized by comprising a control unit, an execution unit and a communication unit, wherein the execution unit is respectively connected with the control unit and the communication unit; The control unit comprises a program control module, a ship stress prediction module and a monitoring alarm module, wherein the program control module is provided with an operation panel, and the operation panel is used for selecting each module in the execution unit and setting an initial value and a target value; The execution unit comprises a grouping ballast tank inlet and outlet valve, a ballast pump module and a ballast tank liquid level switch, wherein the grouping ballast tank inlet and outlet valve and the ballast pump module are respectively connected with the program control module, the grouping ballast tank inlet and outlet valve and the ballast pump module are respectively connected with the liquid level switch, the ballast pump module comprises a first ballast pump, a second ballast pump and a third ballast pump, and the ballast tank liquid level switch is a float switch.
2. The control system for automatic ballast water replacement according to claim 1, wherein the communication unit is a signal input module of an integrated automation system and a ship Ethernet, the communication unit is connected with the execution unit and used for collecting working states of all modules in the execution unit, the communication unit is connected with other data of a ship, and all system data of the ship are sent to the integrated automation system through the communication unit so as to complete real-time monitoring and judgment of all systems.
3. The control system for automatic ballast water replacement according to claim 1, wherein the automatic control of the inlet and outlet valves of the grouping ballast tanks is characterized in that when the control system is in a ballast working condition and the ballast tank liquid level is higher than a liquid level high alarm, the inlet and outlet valves of the ballast tanks are fully closed, ballast work is completed, when the ballast tank liquid level is higher than the liquid level high alarm and lower than the liquid level high alarm, the ballast work is completed in advance through manual valve closing intervention, if no manual intervention exists, the ballast work is automatically completed when the liquid level is higher than the liquid level high alarm through an automatic control program, when the system is in a ballast discharging working condition and the ballast tank liquid level is lower than the liquid level low alarm, the inlet and outlet valves of the ballast tank are fully closed, the ballast tank is completed through manual valve closing when the ballast tank liquid level is higher than the liquid level low alarm and lower than the liquid level low alarm, the ballast work is completed in advance, and if no manual intervention exists, the ballast work is completed automatically when the liquid level is lower than the liquid level low alarm through the automatic control program.
4. The control system for automatic ballast water replacement according to claim 1, wherein the ballast pump automatic control is specifically that under the ballast or discharging working condition of the system, 3 ballast pumps are subjected to pump stopping priority selection before a control program starts, after the three ballast pump stopping priorities are determined, after the program is triggered, the first priority pump and the second priority pump simultaneously start to work, after the target ballast tank liquid level reaches a pump stopping setting value of the first priority pump, the first priority pump is closed, the second priority pump is normally operated, when the system is in a ballast mode, the ballast tank liquid level is higher than a liquid level high alarm, the second priority ballast pump is closed, when the system is in a discharging mode, the ballast pump liquid level is lower than a liquid level low alarm, and the second priority pump is closed.

Description

Control system for automatic ballast water replacement Technical Field The invention belongs to the technical field of ship construction, and particularly relates to a control system for automatic ballast water replacement. Background The ballast system is one of the safety guarantees for stabilizing sailing of various ships, has the functions of adjusting the floating state and draft of the ships and optimizing the stability and the gravity center of the ships, and normally, a shipman loads the ships by using a loading instrument to prevent the risk of normal sailing of the ships caused by overlarge structural stress and overlarge mechanical vibration of the ship. The ballast water replacement system is an important component part in the ballast system, and the main function of the ballast water replacement system is to prevent the destination sea area from being invaded by foreign organisms in other sea areas by means of a geographical isolation strategy in the sea area with the water depth of 200 meters. However, ballast water replacement generally takes a long time and effort, and the replacement work of each ballast tank is completed step by manual operation, resulting in low work efficiency. Meanwhile, during replacement of each ballast tank, the ship stress change can judge corresponding risks through real-time monitoring, but fluctuation of the sensor has hysteresis, and the ship structure risks caused by problems such as ship stress concentration and the like are unavoidable. Disclosure of Invention The invention aims to overcome the defects in the prior art and provide the control system for automatic ballast water replacement, and the ship can predict the possible ground risk caused by corresponding operation in advance by adding the ship body stress prediction module and the monitoring alarm module, can alarm timely when the risk comes, has high reliability and simultaneously has the characteristic of intelligence. In order to achieve the above object, the present invention provides the following technical solutions: The control system for automatic ballast water replacement comprises a control unit, an execution unit and a communication unit, wherein the execution unit is respectively connected with the control unit and the communication unit; The control unit comprises a program control module, a ship stress prediction module and a monitoring alarm module, wherein the program control module is provided with an operation panel, and the operation panel is used for selecting each module in the execution unit and setting an initial value and a target value; The execution unit comprises a grouping ballast tank inlet and outlet valve, a ballast pump module and a ballast tank liquid level switch, wherein the grouping ballast tank inlet and outlet valve and the ballast pump module are respectively connected with the program control module, the grouping ballast tank inlet and outlet valve and the ballast pump module are respectively connected with the liquid level switch, the ballast pump module comprises a first ballast pump, a second ballast pump and a third ballast pump, and the ballast tank liquid level switch is a float switch. The system comprises a communication unit, an execution unit, a ship and an integrated automation system, wherein the communication unit is used for integrating a signal input module of the automation system and a ship Ethernet, the communication unit is connected with the execution unit and used for collecting working states of all modules in the execution unit, the communication unit is connected with other data of the ship, and all system data of the ship are sent to the integrated automation system through the communication unit so as to complete real-time monitoring and judgment of all systems. The automatic control method of the grouped ballast tank inlet/outlet valve comprises the steps of controlling a system to be in a ballast working condition, closing the ballast tank inlet/outlet valve completely when the ballast tank liquid level is higher than a liquid level high alarm, completing ballast work in advance by manually closing the valve when the ballast tank liquid level is higher than the liquid level high alarm and lower than the liquid level high alarm, automatically completing ballast work when the liquid level is higher than the liquid level high alarm through an automatic control program if manual intervention is not performed, completing ballast discharging when the ballast tank liquid level is lower than the liquid level low alarm under a ballast discharging working condition, completing ballast discharging when the ballast tank liquid level is higher than the liquid level low alarm and lower than the liquid level low alarm through manual valve closing when the ballast tank liquid level is lower than the liquid level low alarm, and completing ballast work in advance by automatically completing ballast work when the liquid level is lower than the liquid le