Dynamic response type ship marine growth prevention device control system and control method

Abstract

The present invention provides a dynamic response ship marine growth prevention device control system and control method, wherein the system includes a control system, marine growth prevention electrodes, a seawater valve box, a seawater filter, and a delivery pipeline; the control system is connected to the marine growth prevention electrodes; the marine growth prevention electrodes are connected to the seawater valve box or the seawater filter; the seawater valve box is connected to the water system via the delivery pipeline; the control system includes a seawater pump real-time monitoring module, a seawater total flow calculation module, a marine growth prevention electrolytic antifouling agent concentration calculation module, an electrolysis current calculation module, and a marine growth prevention electrolysis current regulation module; and each delivery branch is installed with a seawater pump. The present invention's dynamic response ship marine growth prevention device control system and control method reads the seawater pump's operating signal in real time, calculates the actual flow rate used, and then adjusts the electrolysis current of the marine growth prevention device electrodes based on the calculated flow rate, thereby improving the electrode's effective electrolysis rate, reducing the ship's energy consumption, and extending the device's service life.

Description

Technical Field

[0001] The present invention relates to the technical field of ship marine growth prevention devices, and in particular to a dynamic response type ship marine growth prevention device control system and a control method. Background Art

[0002] To address the mismatch between electrolysis demand and seawater usage, resulting from the constant current mode of shipboard marine biofouling prevention devices, high system energy consumption, short electrode life, and marine environmental pollution caused by excessive electrolysis, existing technologies employ flowmeters installed on the seawater outlet pipeline to monitor the seawater flow rate in the system. Based on the monitored flow rate, the required electrolysis volume is calculated and the electrolysis current connected to the marine biofouling prevention device is adjusted. However, this technology has limitations in its placement within the pipeline, increasing the complexity of system layout and construction, as well as high equipment purchase and maintenance costs.

[0003] Currently, marine growth prevention devices used on ships typically utilize copper and aluminum electrodes installed in the seawater valve chest for electrolysis. Electrode size is selected based on the maximum flow rate of the ship's seawater system and the lifespan of the marine growth prevention system. Constant current electrolysis is employed during operation, and the electrodes are replaced after reaching the end of their service life. Given that the actual flow rate of a ship's seawater system is typically lower than the maximum flow rate for extended periods under normal conditions, the constant current electrolysis mode for marine growth prevention electrodes presents the problem of over-electrolysis, resulting in lower electrode efficiency, increased energy consumption and costs, and the large amount of metal ions released by over-electrolysis can pollute the marine environment.

[0004] In order to improve the effective electrolysis rate, the most critical factor is the matching of the electrolysis amount and the actual seawater flow rate of the seawater system. The seawater flow rate in the seawater pipeline system is monitored by seawater flow monitoring equipment, and the electrolysis current output is automatically adjusted according to the flow rate changes to control the antifouling agent production.

[0005] The existing method for achieving this goal is to install a flow meter in the seawater pipeline to monitor the flow rate of the seawater system. To ensure accurate measurement, the flow meter must be installed in the middle of a straight section of the outlet pipe, with the straight section length being at least 20 times the pipe diameter, and at least 1 meter away from the seawater filter or seawater valve box.

[0006] The existing technology mainly has the following shortcomings:

[0007] 1. The cost of flow meters is high. If ships use existing technical solutions, they need to purchase additional monitoring equipment.

[0008] 2. The installation, commissioning and maintenance of the flow meter in the pipeline are complicated. For example, the length requirements of the straight pipe sections before and after the flow meter, as well as the distance requirements between the flow meter and the seawater tank or seawater filter, increase the difficulty of system construction and equipment maintenance.

[0009] 3. The flow meter has measurement errors, which may cause the controlled electrolysis current to not match the actual seawater flow.

[0010] In view of the above method of using flow meters to monitor seawater flow, a simple, reliable, easy to construct and low-cost method is needed to solve the above shortcomings. Summary of the Invention

[0011] In response to the above-mentioned deficiencies in the prior art, the present invention provides a dynamically responsive ship anti-marine growth device control system and control method. The system reads the operating signals of different seawater pumps in the ship's seawater system in real time, calculates the actual usage flow rate, and then adjusts the electrolysis current of the electrodes of the anti-marine growth device according to the calculated flow rate, thereby improving the effective electrolysis rate of the electrodes, reducing the ship's energy consumption and extending the service life of the device.

[0012] To achieve the above-mentioned objectives, the present invention provides a dynamic response type ship marine growth prevention device control system, comprising a control system, a plurality of marine growth prevention electrodes, a plurality of seawater valve boxes, a plurality of seawater filters and a delivery pipeline; the control system is connected to the marine growth prevention electrodes; the marine growth prevention electrodes are connected to the seawater valve box or the seawater filter; the seawater valve box is connected to at least one water system via the delivery pipeline; the control system comprises a seawater pump real-time monitoring module, a seawater total flow calculation module, a marine growth prevention electrolytic antifouling agent concentration calculation module, an electrolysis current calculation module, and a marine growth electrolysis current regulation module; the delivery pipeline comprises a seawater main and a plurality of delivery branches connected to the seawater main, each of the delivery branches being equipped with a seawater pump; the seawater valve box is connected to the delivery branches via the seawater filter provided on the seawater main; the control system is connected to the seawater pump;

[0013] The seawater pump real-time monitoring module is used to monitor the status of each seawater pump in real time and obtain the seawater pump operation signal of the seawater pump;

[0014] The total seawater flow calculation module is used to receive the seawater pump operation signal when the seawater pump is started and superimpose the seawater pump flow represented by the seawater pump operation signal to calculate the total seawater flow;

[0015] The anti-marine organism electrolytic antifouling agent concentration calculation module is used to calculate the required anti-marine organism electrolytic antifouling agent concentration based on the total seawater flow rate;

[0016] The electrolysis current calculation module is used to calculate the electrode electrolysis speed according to the required concentration of the anti-marine biofilm electrolysis antifouling agent;

[0017] The marine organism electrolysis current regulating module is used to automatically regulate the output of the marine organism electrolysis current according to the electrolysis speed of the electrode, and to match the required electrolysis current for the marine organism electrolysis electrode.

[0018] Preferably, the delivery branch further includes a stop valve and a stop check valve; the seawater pump is arranged between the stop valve and the stop check valve; the stop check valve is arranged adjacent to the water system; and the control system is connected to the stop valve.

[0019] Preferably, two seawater valve boxes are included, and the seawater valve boxes are a low-level seawater valve box and a high-level seawater valve box.

[0020] Preferably, it further comprises a plurality of valves, with the valves being respectively provided at both ends of the seawater filter; and a seawater pump on a delivery branch serves as a ballast pump.

[0021] Preferably, the control system further includes a control valve switch signal acquisition module; the control valve switch signal acquisition module is used to acquire the switch signal of the stop valve; when the switch signal of the stop valve indicates that the stop valve is in a closed state, the total seawater flow calculation module will not include the seawater flow passing through the ballast pump in the total seawater flow; when the switch signal of the stop valve indicates that the stop valve is in an open state, if the ballast pump is turned on at the same time, the total seawater flow calculation module will include the seawater flow passing through the ballast pump in the total seawater flow.

[0022] Preferably, the seawater pump real-time monitoring module obtains the seawater pump operation signal from a control box of the seawater pump or a ship monitoring and alarm system.

[0023] Preferably, the water system includes a fire water system, a cooling water system or a ballast water system.

[0024] Preferably, the control system further comprises a seawater pump operation and stop module; the seawater pump operation and stop module controls the operation and stop of the seawater pump according to the type of the water system.

[0025] A control method of a dynamic response ship marine growth prevention device control system of the present invention comprises the following steps:

[0026] S1: monitoring the status of each seawater pump in real time and obtaining the seawater pump operation signal of the seawater pump;

[0027] S2: When the seawater pump is started, the seawater pump operation signal is received and the seawater pump flow represented by the seawater pump operation signal is superimposed to calculate the total seawater flow;

[0028] S3: Calculate the required concentration of electrolytic antifouling agent for preventing marine organisms based on the total flow rate of seawater;

[0029] S4: calculating the electrode electrolysis rate according to the required concentration of the anti-marine biofilm electrolysis antifouling agent;

[0030] S5: Automatically adjust the output of the anti-marine growth electrolysis current according to the electrolysis speed of the electrode, and match the required electrolysis current for a plurality of anti-marine growth electrodes.

[0031] The present invention adopts the above technical solution, so it has the following beneficial effects:

[0032] 1. The seawater pump real-time monitoring module and the seawater total flow calculation module of the control system cooperate with each other to obtain the operating signals of different seawater pumps and calculate the total flow of the seawater pumps in real time, so as to achieve the purpose of real-time monitoring of the seawater flow of the ship's seawater system;

[0033] 2. The control system can calculate the required electrolytic concentration of the antifouling agent and the electrode electrolysis speed by using the calculated actual flow rate of the seawater system through the cooperation of the anti-marine organism electrolysis antifouling agent concentration calculation module and the electrolysis current calculation module, thereby dynamically adjusting the current output of the electrolysis electrode of the anti-marine organism device through the marine organism electrolysis current adjustment module;

[0034] 3. The flow rate monitoring method is achieved by collecting the operating signal of the seawater pump, which is low-cost. The operating signal output of the existing ship seawater system pump is a conventional configuration. The present invention makes full use of the characteristics of the equipment on the ship and does not require additional flow measurement devices, thereby reducing costs.

[0035] 4. The flow rate calculated by collecting the pump operation signal is more accurate;

[0036] 5. The actual flow of the real-time seawater system can be monitored to accurately match the electrolysis current, thereby achieving the purpose of ensuring the anti-marine biological effect of the ship while saving energy consumption, improving the effective electrolysis rate and extending the service life of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of a control system for a dynamic response ship marine growth prevention device according to an embodiment of the present invention;

[0038] Figure 2 The present invention is a flowchart of a control method of a dynamic response ship marine growth prevention device control system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] Below according to the attached drawings Figure 1 and Figure 2 , gives the preferred embodiment of the present invention, and describes it in detail so that the functions and features of the present invention can be better understood.

[0040] See also Figure 1 and Figure 2A dynamic response type control system for a ship marine growth prevention device according to an embodiment of the present invention includes a control system 3, a plurality of marine growth prevention electrodes 1, a plurality of seawater valve boxes, a plurality of seawater filters 6, and a delivery pipeline; the control system 3 is connected to the marine growth prevention electrodes 1; the marine growth prevention electrodes 1 are connected to the seawater valve box or the seawater filter 6; the seawater valve box is connected to at least one water system via a delivery pipeline; the control system 3 includes a seawater pump real-time monitoring module, a seawater total flow calculation module, a marine growth prevention electrolytic antifouling agent concentration calculation module, an electrolysis current calculation module, and a marine growth prevention electrolysis current regulation module; the delivery pipeline includes a seawater main and a plurality of delivery branches connected to the seawater main, each delivery branch being equipped with a seawater pump 2; the seawater valve box is connected to the delivery branches via a seawater filter 6 provided on the seawater main; the control system 3 is connected to the seawater pump 2;

[0041] The seawater pump real-time monitoring module is used to monitor the status of each seawater pump 2 in real time and obtain the seawater pump operation signal of the seawater pump 2;

[0042] The seawater total flow calculation module is used to receive the seawater pump operation signal when the seawater pump 2 is started and superimpose the seawater pump flow represented by the seawater pump operation signal to calculate the total seawater flow;

[0043] The concentration calculation module of the electrolytic antifouling agent for preventing marine organisms is used to calculate the required concentration of the electrolytic antifouling agent for preventing marine organisms according to the total flow rate of seawater;

[0044] The electrolysis current calculation module is used to calculate the electrode electrolysis speed according to the required concentration of the anti-marine biofilm electrolysis antifouling agent;

[0045] The anti-marine growth electrolysis current regulating module is used to automatically adjust the output of the anti-marine growth electrolysis current according to the electrode electrolysis speed, and match the required electrolysis current for the anti-marine growth electrode 1.

[0046] The delivery branch also includes a stop valve 4 and a stop check valve 5; the seawater pump 2 is arranged between the stop valve 4 and the stop check valve 5; the stop check valve 5 is arranged adjacent to the water system. The control system 3 is connected to the stop valve 4.

[0047] The system comprises two seawater valve boxes, which are a low-position seawater valve box 7 and a high-position seawater valve box 8.

[0048] The anti-marine biofilm electrodes 1 are installed on the vessel's high and low seawater chests 7. When powered, electrolysis by the copper and aluminum electrodes produces a concentration of antifouling agents, primarily copper ions and hypochlorous acid, in the seawater within the chests. This antifouling agent, along with the treated seawater within the chests, passes through a seawater filter 6 and a stop valve 4, and is delivered by seawater pumps 2 with varying flow rates to various water systems, thereby inhibiting the attachment and growth of marine biofilm within the vessel's seawater systems.

[0049] It also includes several valves, with valves provided at both ends of the seawater filter 6; a seawater pump 2 on a delivery branch serves as a ballast pump.

[0050] The control system 3 also includes a control valve switch signal acquisition module; the control valve switch signal acquisition module is used to collect the switch signal of the stop valve 4; when the switch signal of the stop valve 4 indicates that the stop valve 4 is in the closed state, the total seawater flow calculation module will not include the seawater flow passing through the ballast pump in the total seawater flow; when the switch signal of the stop valve 4 indicates that the stop valve 4 is in the open state, if the ballast pump is turned on at the same time, the total seawater flow calculation module will include the seawater flow passing through the ballast pump in the total seawater flow.

[0051] The seawater pump real-time monitoring module obtains the seawater pump operation signal from the control box of the seawater pump 2 or a ship monitoring and alarm system.

[0052] Water systems include fire water systems, cooling water systems or ballast water systems.

[0053] Water-using systems such as the fire water system, cooling water system, and ballast water system all require seawater pumps 2. Due to the varying seawater demands of the users they serve, the flow rates of the seawater pumps 2 in each system vary. Furthermore, the operating conditions of each seawater pump 2 are also different. For example, the seawater pump 2 in the fire water system only needs to be activated for water firefighting; the seawater pump 2 in the cooling water system needs to be activated when the equipment is operating; and the seawater pump 2 in the ballast water system is used when the ship needs to maintain stability. Therefore, these systems are not used simultaneously for extended periods of time. In other words, each seawater pump 2 in the control system 3 will operate or stop in different situations according to the needs of the ship.

[0054] The control system 3 further includes a seawater pump operation and stop module; the seawater pump operation and stop module controls the operation and stop of the seawater pump 2 according to the type of water system.

[0055] The control system 3 monitors the status of each seawater pump 2 in real time: when the seawater pump 2 is started, the switch signal is transmitted to the control system 3. After receiving the signal, the control system 3 superimposes the different seawater pump flow rates represented by different signals to calculate the total seawater flow rate, which is the actual seawater flow rate of the seawater system in the current state.

[0056] Given that the ship's ballast system does not generate new seawater flow for the ship's seawater system during unloading and barge-transferring conditions, and only generates new seawater flow during ballasting conditions, in addition to the ballast pump's operating signal, it is also necessary to collect the switch signal of the stop valve 4 connecting the ballast system and the seawater main. When the stop valve 4 is in the closed state, the operation of the ballast pump does not generate a superimposed calculation of the system seawater flow. When the stop valve 4 is in the open state, if the ballast pump is turned on at the same time, it needs to be included in the system seawater flow.

[0057] The actual seawater flow rate determines the concentration of the antifouling agent, allowing calculation of the electrode electrolysis rate and matching the required electrolysis current. Control System 3 automatically adjusts the output of the antifouling electrolysis current, precisely controlling the electrolysis volume to match the seawater flow rate in the vessel's seawater system in real time, thereby increasing the effective electrolysis rate.

[0058] A control method of a dynamic response ship marine growth prevention device control system of the present invention comprises the following steps:

[0059] S1: monitor the status of each seawater pump 2 in real time and obtain the seawater pump operation signal of the seawater pump 2;

[0060] S2: When the seawater pump 2 is started, the seawater pump operation signal is received and the seawater pump flow represented by the seawater pump operation signal is added to calculate the total seawater flow;

[0061] S3: Calculate the required concentration of electrolytic antifouling agent for preventing marine organisms based on the total flow rate of seawater;

[0062] S4: Calculating the electrode electrolysis rate according to the required concentration of the anti-marine bioelectrolysis antifouling agent;

[0063] S5: Automatically adjust the output of the anti-marine growth electrolysis current according to the electrode electrolysis speed, and match the required electrolysis current for a plurality of anti-marine growth electrodes 1.

[0064] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A dynamic response ship anti-marine growth device control system, characterized in that: The invention comprises a control system (3), a plurality of anti-marine growth electrodes (1), a plurality of seawater valve boxes, a plurality of seawater filters (6) and a delivery pipeline; the control system (3) is connected to the anti-marine growth electrodes (1); the anti-marine growth electrodes (1) are connected to the seawater valve box or the seawater filter (6); the seawater valve box is connected to at least one water system via the delivery pipeline; The control system (3) includes a seawater pump real-time monitoring module, a seawater total flow calculation module, a marine biofilm electrolysis antifouling agent concentration calculation module, an electrolysis current calculation module, and a marine biofilm electrolysis current regulation module; the delivery pipeline includes a seawater main pipe and a plurality of delivery branches connected to the seawater main pipe, each of the delivery branches is equipped with a seawater pump (2), and a seawater pump (2) on a delivery branch serves as a ballast pump; the seawater valve box is connected to the delivery branch via the seawater filter (6) provided on the seawater main pipe; the control system (3) is connected to the seawater pump (2); the delivery branch further includes a stop valve (4) and a stop check valve (5); the seawater pump (2) is provided between the stop valve (4) and the stop check valve (5); the stop check valve (5) is provided adjacent to the water system; the control system (3) is connected to the stop valve (4); The seawater pump real-time monitoring module is used to monitor the status of each of the seawater pumps (2) in real time and obtain the seawater pump operation signal of the seawater pump (2); The total seawater flow calculation module is used for receiving the seawater pump operation signal when the seawater pump (2) is started and superimposing the seawater pump flow represented by the seawater pump operation signal to calculate the total seawater flow; The anti-marine organism electrolytic antifouling agent concentration calculation module is used to calculate the required anti-marine organism electrolytic antifouling agent concentration based on the total seawater flow rate; The electrolysis current calculation module is used to calculate the electrode electrolysis speed according to the required concentration of the anti-marine biofilm electrolysis antifouling agent; The marine organism electrolysis current regulating module is used to automatically regulate the output of the marine organism electrolysis current according to the electrolysis speed of the electrode, and to match the required electrolysis current for the marine organism electrolysis electrode (1); The control system (3) further comprises a control valve switch signal acquisition module; the control valve switch signal acquisition module is used to acquire the switch signal of the stop valve (4); when the switch signal of the stop valve (4) indicates that the stop valve (4) is in a closed state, the total seawater flow calculation module does not count the seawater flow passing through the ballast pump into the total seawater flow; when the switch signal of the stop valve (4) indicates that the stop valve (4) is in an open state, if the ballast pump is turned on at the same time, the total seawater flow calculation module counts the seawater flow passing through the ballast pump into the total seawater flow.

2. The dynamic response ship anti-marine growth device control system according to claim 1 is characterized in that: It comprises two seawater valve boxes, wherein the seawater valve boxes are a low-position seawater valve box (7) and a high-position seawater valve box (8).

3. The dynamic response ship anti-marine growth device control system according to claim 1, characterized in that: It also includes a plurality of valves, and the two ends of the seawater filter (6) are respectively provided with the valves.

4. The dynamic response ship anti-marine growth device control system according to claim 1, characterized in that: The seawater pump real-time monitoring module obtains the seawater pump operation signal from the control box of the seawater pump (2) or a ship monitoring alarm system.

5. The dynamic response ship anti-marine growth device control system according to claim 1, characterized in that: The water system includes a fire water system, a cooling water system or a ballast water system.

6. The dynamic response ship anti-marine growth device control system according to claim 1, characterized in that: The control system (3) further comprises a seawater pump operation and stop module; the seawater pump operation and stop module controls the operation and stop of the seawater pump (2) according to the type of the water system.

7. A control method for a dynamic response ship anti-marine growth device control system, characterized in that: The dynamic response type ship anti-marine growth device control system according to any one of claims 1 to 6 comprises the following steps: S1: monitoring the status of each seawater pump (2) in real time and obtaining a seawater pump operation signal of the seawater pump (2); S2: when the seawater pump (2) is started, receiving the seawater pump operation signal and superimposing the seawater pump flow represented by the seawater pump operation signal to calculate the total seawater flow; S3: Calculate the required concentration of electrolytic antifouling agent for preventing marine organisms based on the total flow rate of seawater; S4: calculating the electrode electrolysis rate according to the required concentration of the anti-marine biofilm electrolysis antifouling agent; S5: Automatically adjust the output of the anti-marine organism electrolysis current according to the electrolysis speed of the electrode, and match the required electrolysis current for a plurality of anti-marine organism electrodes (1).

Images