Intelligent anti-sea organism system and method with sectional flow regulation

Abstract

The embodiment of the present application provides a kind of segmented flow regulation intelligent anti-marine biological system and method, system includes anti-marine biological device seawater pump, it is arranged in seawater main pipe on the outlet side with pressure sensor;Multiple variable frequency seawater pumps, the outlet of each variable frequency seawater pump is equipped with pressure sensor;Electrolytic unit control box, by control program, the discharge pressure signal of anti-marine biological device seawater pump and each variable frequency seawater pump is converted into corresponding seawater pump real-time flow signal, and then determine total flow signal, and based on precalculated segmented flow table is combined with total flow signal, select the effective chlorine demand value corresponding to the corresponding segmented flow range, based on effective chlorine demand value adjustment electrolytic unit interval electrolytic current to produce the electrolyte in allowable concentration range, and further through branch remote control valve is transported to the required seawater valve box;The opening degree of branch remote control valve corresponds to the flow corresponding to the flow corresponding to total flow signal.

Description

Technical Field

[0001] This invention relates to the field of marine electrolytic anti-biological systems, and in particular to an intelligent anti-biological system and method with segmented flow regulation. Background Technology

[0002] In response to energy-saving requirements, the application of variable frequency seawater cooling systems is becoming increasingly widespread. Currently, based on these variable frequency seawater cooling systems, more advanced electrolytic marine organism control systems generally employ stepless flow regulation. As ship functions improve, the design of variable frequency seawater cooling systems will become more complex and larger, such as matching multiple variable frequency seawater pumps with different functions to each seawater valve box or setting up multiple variable frequency seawater cooling systems according to DP requirements. If the electrolytic marine organism control system continues to use stepless flow regulation, it will cause frequent operation of the remote control valves at each outlet branch of the electrolysis unit, significantly increasing the failure rate of these remote control valves, affecting the normal operation of the system, and increasing ship operation and maintenance costs. Summary of the Invention

[0003] In view of the above-mentioned problems existing in the prior art, the present invention provides an intelligent marine biological control system and method with segmented flow regulation. The system uses an electrolysis unit control system to convert the real-time outlet pressure signal into a total flow value based on the flow characteristic curve of each variable frequency seawater pump. The electrolysis unit control system compares the total flow value at this time with a pre-calculated segmented flow table, substitutes it into a suitable segmented flow range, selects the corresponding effective chlorine demand value, and then adjusts the interval electrolysis current of the electrolysis unit to generate an electrolyte within the allowable concentration range. The electrolyte is then delivered proportionally to the required seawater valve box through branch remote control valves.

[0004] This invention provides an intelligent marine biological defense system for a variable frequency seawater cooling system, comprising:

[0005] The seawater pump of the anti-sea organism device is arranged on the seawater main pipe and a first pressure sensor is provided on the outlet side. The first pressure sensor is used to send the measured first discharge pressure signal to the control box of the electrolysis unit.

[0006] Multiple variable frequency seawater pumps, each of the multiple variable frequency seawater pumps is equipped with a second pressure sensor at its outlet, the second pressure sensor is used to send the measured discharge pressure signal of the corresponding variable frequency seawater pump to the electrolysis unit control box.

[0007] The electrolysis unit control box converts the discharge pressure signals of the seawater pumps of the anti-marine organism device and each of the variable frequency seawater pumps into real-time flow signals of the corresponding seawater pumps through a control program. This determines the total flow signal. Based on a pre-calculated segmented flow table and the total flow signal, the box selects the effective chlorine requirement value corresponding to the corresponding segmented flow range. Based on the effective chlorine requirement value, the box adjusts the interval electrolysis current of the electrolysis unit to generate electrolyte within the allowable concentration range. The electrolyte is then delivered to the required seawater valve box through a branch remote control valve.

[0008] The flow rate corresponding to the opening degree of the branch remote control valve corresponds to the flow rate corresponding to the total flow signal.

[0009] In some embodiments of the present invention, the available chlorine demand corresponding to the segmented flow ranges satisfies the following calculation formula.

[0010] B*b / a < A < B

[0011] Where A represents the lower limit of seawater flow rate within the permissible sodium hypochlorite concentration range, in m³ / s. 3 / h;

[0012] B represents the upper limit of seawater flow rate within the permissible sodium hypochlorite concentration range, in meters. 3 / h;

[0013] 'a' represents the upper limit of the permissible sodium hypochlorite concentration, taken as 0.5 ppm.

[0014] b is the design value for sodium hypochlorite concentration, taken as 0.3 ppm.

[0015] In some embodiments of the present invention, the required electrolysis current value within the interval A and B is calculated using the following formula:

[0016] I = G / (β*K)

[0017] In the formula,

[0018] I represents the electrolysis current, measured in amperes (A).

[0019] G is the required amount of available chlorine, G = seawater flow rate * design available chlorine concentration = B * b, with the unit being g / h;

[0020] β is the current efficiency, taken as 0.9;

[0021] K represents the theoretical energy production per ampere-hour, which is taken as 1.32.

[0022] In some embodiments of the present invention, the step of converting the discharge pressure signals of the seawater pump of the anti-marine biological device and each of the variable frequency seawater pumps into a unified real-time flow signal of the corresponding seawater pump through a control program includes:

[0023] The control program converts the real-time discharge pressure signal at the outlet of each seawater pump into the real-time flow signal of the corresponding seawater pump based on the characteristic curves of the seawater pumps of the anti-marine biological device and the characteristic curves of each variable frequency seawater pump.

[0024] In some embodiments of the present invention, the seawater pump of the anti-marine biological device is provided with a filter on the inlet side, the filter element material is stainless steel or other seawater corrosion resistant material, and the filter element precision is no more than 3mm.

[0025] The filter is equipped with operating valves on both the inlet and outlet pipes.

[0026] In some embodiments of the present invention, the seawater pump of the anti-marine organism device is a centrifugal pump, and the pump casing and impeller are made of materials resistant to seawater corrosion, and are matched with a variable frequency motor.

[0027] In some embodiments of the present invention, a shut-off check valve is provided on the pipeline connecting the outlet of the seawater pump of the anti-marine biological device to the electrolysis unit. The shut-off check valve is made of bronze or other materials resistant to seawater corrosion.

[0028] In some embodiments of the present invention, the electrolysis unit is connected to a seawater valve box via an electrolyte discharge pipe. The electrolyte discharge pipe has a branch remote-controlled valve on the side near the electrolysis unit and a side-mounted check valve at the end near the seawater valve box.

[0029] The electrolyte discharge pipe is made of stainless steel or at least carbon steel coated with plastic that is resistant to sodium hypochlorite corrosion.

[0030] The side-mounted shut-off check valve is made of stainless steel or cast steel lined with a corrosion-resistant material containing at least fluorine.

[0031] This invention also provides an intelligent marine organism prevention method for a variable frequency seawater cooling system, applied to the intelligent marine organism prevention system of the variable frequency seawater cooling system described in the above embodiments. The method includes:

[0032] The number of intelligent marine biological defense systems with segmented flow regulation will be determined based on the specific ship type layout and the variable frequency seawater cooling system.

[0033] The total flow rate corresponding to the variable frequency seawater pumps or anti-marine organism device seawater pumps operating on each seawater main pipe in each variable frequency seawater cooling system is superimposed and calculated. The total flow rate is then evenly distributed to the seawater valve boxes corresponding to the variable frequency seawater pumps. Variable frequency seawater pumps or anti-marine organism device seawater pumps pumping water in the same seawater valve box or the same group of seawater valve boxes are set as a group, and the total flow rate of the variable frequency seawater pumps or anti-marine organism device seawater pumps in this group is evenly distributed to the seawater valve boxes in this group.

[0034] Based on the total flow rate of each variable frequency seawater cooling system, the maximum total amount of seawater that the electrolytic marine biological protection system needs to process is calculated.

[0035] The total seawater volume from 0 to the maximum volume is segmented, and the number of segments and flow ranges are determined based on the project requirements.

[0036] Based on the determined number of segments and flow ranges, a segmented flow table is compiled and the relevant information is synchronized to the electrolysis unit control box. When there is a flow demand in the seawater valve box, the electrolysis unit control box compares the flow value converted from the pressure signal with the pre-calculated segmented flow table, substitutes it into the appropriate segmented flow range, selects the corresponding effective chlorine demand value, and then adjusts the interval electrolysis current of the electrolysis unit to generate electrolyte within the allowable concentration range. The electrolyte is then delivered to the corresponding seawater valve box through the branch remote control valve corresponding to the seawater valve box with flow demand. The opening ratio of the branch remote control valve is determined based on the total flow signal uniformly converted from the discharge pressure signals of the anti-marine biological device seawater pump and each of the variable frequency seawater pumps, as well as the number of seawater valve boxes with flow demand.

[0037] In some embodiments of the present invention, if, when calculating the total flow rate, there are seawater pumps that are not part of the variable frequency seawater cooling system, including at least a ballast pump or a fire pump, pumping water, the total flow rate is calculated by adding the rated flow rate of the ballast pump or the fire pump.

[0038] Compared with the prior art, the beneficial effects of the segmented flow rate regulation intelligent marine biological control system and method provided in the embodiments of the present invention are as follows: its configuration is relatively simple, the segmented flow rate range can be adjusted according to the actual situation, the remote control valves of each outlet branch of the electrolysis unit operate relatively smoothly, the degree of automation is high, the operability is strong, the system is safe and reliable, the impact on the corrosion of the ship structure is small, and the application range is wide. Attached Figure Description

[0039] Figure 1 This is a schematic diagram illustrating the principle of the intelligent marine biological defense system with segmented flow regulation provided in an embodiment of the present invention.

[0040] Figure Labels

[0041] 1. Main seawater pipe; 2. Operating valve; 3. Filter; 4. Seawater pump for marine organism control device; 5. First pressure sensor; 6. Stop check valve; 7. Electrolysis unit; 8. Electrolysis unit control box; 9. Branch remote control valve; 10. Electrolyte discharge pipe; 11. Side stop check valve; 12. Seawater valve box; 13. Variable frequency seawater pump; 14. Second pressure sensor. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0044] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0045] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0046] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0047] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0048] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0049] This invention provides an intelligent marine biological defense system for a variable frequency seawater cooling system, such as... Figure 1 As shown, it includes:

[0050] The seawater pump 4 of the anti-marine organism device is arranged on the seawater main pipe 1, specifically on a particular seawater main pipe 1. A first pressure sensor 5 is installed at the outlet side, which transmits the measured first discharge pressure signal to the electrolysis unit control box 8. This first discharge pressure signal is a pressure analog signal. A filter 3 is installed at the inlet side of the seawater pump 4 to filter impurities. The filter element is made of stainless steel or other seawater-resistant materials, and the filter element precision is no greater than 3mm; preferably, 2mm. Operating valves 2 are installed on both the inlet and outlet pipes of the filter 3. Furthermore, the seawater pump 4 is a centrifugal pump, with a pump casing and impeller made of seawater-resistant materials, and is equipped with a variable frequency motor. A check valve 6, made of bronze or other seawater-resistant materials, is installed on the pipe connecting the outlet of the seawater pump 4 to the electrolysis unit 7.

[0051] Multiple variable frequency seawater pumps 13 are provided, and each of the multiple variable frequency seawater pumps 13 is provided with a second pressure sensor 14 at its outlet. The second pressure sensor 14 is used to send the measured second discharge pressure signal of the corresponding variable frequency seawater pump 13 to the electrolysis unit control box 8. The second discharge pressure signal is also a pressure analog signal.

[0052] The electrolysis unit control box 8 converts the first discharge pressure signal and the second discharge pressure signal into the real-time flow signal of the corresponding seawater pump through the control program, thereby determining the total flow signal. Based on the pre-calculated segmented flow table and the total flow signal, it selects the effective chlorine demand value corresponding to the corresponding segmented flow range. Based on the effective chlorine demand value, it adjusts the interval electrolysis current of the electrolysis unit 7 to generate electrolyte within the allowable concentration range, and then delivers it to the required seawater valve box 12 through the branch remote control valve 9.

[0053] The flow rate corresponding to the opening degree of the branch remote control valve 9 corresponds to the flow rate corresponding to the total flow signal.

[0054] To facilitate understanding of the above technical solutions, specific examples are provided below, combined with... Figure 1As shown, on the side of the seawater valve box 12, two seawater valve boxes 12 are equipped with three variable frequency seawater pumps 13. Each seawater valve box 12 is equipped with a branch remote control valve 9. One seawater valve box 12 can be used as a backup. When pumping water by the variable frequency seawater pumps 13, the three variable frequency seawater pumps 13 can operate at different power levels, such as 70%, 50%, and 30% power, or 80%, 60%, and 40% power, etc., without specific limitations. At the same time, the corresponding second discharge pressure signal is detected by the second pressure sensor 14 located on the outlet side of the three variable frequency seawater pumps 13 and sent to the electrolysis unit control box 8. The control program converts the second discharge pressure signal into the real-time flow signal of the corresponding seawater pump, thereby determining the total flow signal and based on the pre-calculated distribution. The flow meter, in conjunction with the total flow signal, selects the effective chlorine demand value corresponding to the corresponding segment flow range. Based on the effective chlorine demand value, it adjusts the interval electrolysis current of the electrolysis unit 7 to generate electrolyte within the allowable concentration range. Correspondingly, if the three variable frequency seawater pumps 13 only pump water from one seawater valve box 12, and the other seawater valve box 12 is used as a backup, the electrolysis unit control box 8 only controls the branch remote control valve 9 corresponding to the seawater valve box 12 being pumped to operate and open it to the opening degree corresponding to the total flow signal corresponding to the three variable frequency seawater pumps 13. If the three variable frequency seawater pumps 13 pump water from two seawater valve boxes 12 simultaneously, the electrolysis unit control box 8 controls the branch remote control valves 9 corresponding to the two seawater valve boxes 12 to open, and the opening degree corresponds to half of the total flow signal corresponding to the three variable frequency seawater pumps 13.

[0055] In actual operation, the seawater pump 4 of the anti-marine biological device can also pump water from the seawater valve box 12. It measures the corresponding first discharge pressure signal through the first pressure sensor 5. If the seawater valve box 12 being pumped is also being pumped by the variable frequency seawater pump 13, the corresponding total flow signal is determined based on the first discharge pressure signal and the second discharge pressure signal measured by the variable frequency seawater pump 13. Then, the opening degree of the branch remote control valve 9 corresponding to the seawater valve box 12 being pumped is controlled by the electrolysis unit control box 8.

[0056] In practical use, the number of seawater valve boxes 12 and the corresponding number of variable frequency seawater pumps 13 are configured according to actual needs, and no specific limitation is made here.

[0057] In this embodiment, the available chlorine demand corresponding to the segmented flow ranges satisfies the following calculation formula:

[0058] B*b / a < A < B

[0059] Where A represents the lower limit of seawater flow rate within the permissible sodium hypochlorite concentration range, in m³ / s.3 / h;

[0060] B represents the upper limit of seawater flow rate within the permissible sodium hypochlorite concentration range, in meters. 3 / h;

[0061] 'a' represents the upper limit of the permissible sodium hypochlorite concentration, taken as 0.5 ppm.

[0062] b is the design value for sodium hypochlorite concentration, taken as 0.3 ppm. In actual use, the minimum value of b can be 0.1 ppm, but the preferred value is 0.3 ppm.

[0063] Furthermore, in this embodiment, the formula for calculating the required electrolysis current value within the interval A and B is as follows:

[0064] I = G / (β*K)

[0065] In the formula,

[0066] I represents the electrolysis current, measured in amperes (A).

[0067] G is the required amount of available chlorine, G = seawater flow rate * design available chlorine concentration = B * b, with the unit being g / h;

[0068] β is the current efficiency, taken as 0.9;

[0069] K represents the theoretical energy production per ampere-hour, which is taken as 1.32.

[0070] In some embodiments of the present invention, the step of converting the first discharge pressure signal and the second discharge pressure signal into a real-time flow signal of the corresponding seawater pump through a control program includes:

[0071] The control program converts the real-time discharge pressure signal of each seawater pump outlet into the real-time flow signal of the corresponding seawater pump based on the characteristic curve of the seawater pump 4 of the anti-marine biological device and the characteristic curve of each of the variable frequency seawater pumps 13.

[0072] In this embodiment, the electrolysis unit 7 is connected to the seawater valve box 12 via an electrolyte discharge pipe 10. The electrolyte discharge pipe 10 is provided with a branch remote control valve 9 on the side near the electrolysis unit 7, and a side-side shut-off check valve 11 at the end near the seawater valve box 12; wherein,

[0073] The electrolyte discharge pipe 10 is made of stainless steel or at least carbon steel coated with plastic that is resistant to sodium hypochlorite corrosion.

[0074] The side-mounted shut-off check valve 11 is made of stainless steel or cast steel lined with a corrosion-resistant material containing at least fluorine, specifically cast steel lined with fluorine, etc.

[0075] As can be seen from the above technical solutions, the intelligent marine biological protection system of the variable frequency seawater cooling system provided in the above embodiments of the present invention has a relatively simple configuration, the segmented flow range can be adjusted according to the actual situation, the remote control valves 9 of each outlet branch of the electrolysis unit 7 operate relatively smoothly, the degree of automation is high, the operability is strong, the system is safe and reliable, the impact on the corrosion of the ship structure is small, and the application range is wide.

[0076] This invention also provides an intelligent marine organism prevention method for a variable frequency seawater cooling system, applied to the intelligent marine organism prevention system of the variable frequency seawater cooling system described in the above embodiments. The method includes:

[0077] The number of intelligent marine biological defense systems with segmented flow regulation will be determined based on the specific ship type layout and the variable frequency seawater cooling system.

[0078] The total flow rate corresponding to the variable frequency seawater pump 13 or the anti-marine organism device seawater pump 4 operating on each seawater main pipe 1 in each variable frequency seawater cooling system is superimposed and calculated. The total flow rate is then evenly distributed to the seawater valve box 12 corresponding to the variable frequency seawater pump 13. The variable frequency seawater pump 13 or the anti-marine organism device seawater pump 4 pumping water in the same seawater valve box 12 or the same group of seawater valve boxes 12 are set as a group, and the total flow rate of the variable frequency seawater pump 13 or the anti-marine organism device seawater pump 4 in the group is evenly distributed to the seawater valve box 12 in the group.

[0079] Based on the total flow rate of each variable frequency seawater cooling system, the maximum total amount of seawater that the electrolytic marine biological protection system needs to process is calculated.

[0080] The total seawater volume from 0 to the maximum volume is segmented, and the number of segments and flow ranges are determined based on the project requirements.

[0081] Based on the determined number of segments and flow ranges, a segmented flow table is compiled and the relevant information is synchronized to the electrolysis unit control box 8. When there is a flow demand in the seawater valve box 12, the electrolysis unit control box 8 compares the flow value converted from the pressure signal with the pre-calculated segmented flow table, substitutes it into the appropriate segmented flow range, selects the corresponding effective chlorine demand value G, and then adjusts the interval electrolysis current I of the electrolysis unit 7 to generate electrolyte within the allowable concentration range. The electrolyte is then delivered to the corresponding seawater valve box 12 through the branch remote control valve 9 corresponding to the seawater valve box 12 with flow demand. The opening ratio of the branch remote control valve 9 is determined based on the total flow signal uniformly converted from the discharge pressure signals of the anti-marine biological device seawater pump 4 and each of the variable frequency seawater pumps 13, as well as the number of seawater valve boxes 12 with flow demand.

[0082] In this embodiment, if, when calculating the total flow rate, there are at least one seawater pump, including a ballast pump or a fire pump, that is not part of the variable frequency seawater cooling system pumping water, then the total flow rate is calculated by adding the rated flow rate of the ballast pump or the fire pump to the corresponding total flow rate. The ballast pump or the fire pump is a constant power pump.

[0083] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. An intelligent marine biological control system for a variable frequency seawater cooling system, characterized in that, include: The seawater pump of the anti-sea organism device is arranged on the seawater main pipe, and a first pressure sensor is provided on the outlet side of the seawater pump of the anti-sea organism device. The first pressure sensor is used to send the measured first discharge pressure signal to the control box of the electrolysis unit. Multiple variable frequency seawater pumps, each of the multiple variable frequency seawater pumps is equipped with a second pressure sensor at its outlet, the second pressure sensor is used to send the measured discharge pressure signal of the corresponding variable frequency seawater pump to the electrolysis unit control box. The electrolysis unit control box converts the discharge pressure signals of the seawater pumps of the anti-marine organism device and each of the variable frequency seawater pumps into real-time flow signals of the corresponding seawater pumps through a control program. This determines the total flow signal. Based on a pre-calculated segmented flow table and the total flow signal, the box selects the effective chlorine requirement value corresponding to the corresponding segmented flow range. Based on the effective chlorine requirement value, the box adjusts the interval electrolysis current of the electrolysis unit to generate electrolyte within the allowable concentration range. The electrolyte is then delivered to the required seawater valve box through a branch remote control valve. The flow rate corresponding to the opening degree of the branch remote control valve corresponds to the flow rate corresponding to the total flow signal; The process of converting the discharge pressure signals of the seawater pumps in the anti-marine biological device and each of the variable frequency seawater pumps into real-time flow signals for the corresponding seawater pumps through a control program includes: The control program converts the real-time discharge pressure signal of each seawater pump outlet into the real-time flow signal of the corresponding seawater pump based on the characteristic curve of the seawater pump of the anti-marine biological device and the characteristic curve of each variable frequency seawater pump. The electrolysis unit is connected to the seawater valve box via an electrolyte supply pipe. The electrolyte supply pipe has a branch remote-controlled valve on the side near the electrolysis unit and a side-mounted check valve at the end near the seawater valve box. The electrolyte discharge pipe is made of stainless steel or at least carbon steel coated with plastic that is resistant to sodium hypochlorite corrosion. The side-mounted shut-off check valve is made of stainless steel or cast steel lined with a corrosion-resistant material containing at least fluorine.

2. The intelligent marine biological control system of the variable frequency seawater cooling system according to claim 1, characterized in that, The available chlorine demand corresponding to the segmented flow ranges satisfies the following calculation formula. B*b / a < A < B Where A represents the lower limit of seawater flow rate within the permissible sodium hypochlorite concentration range, in m³ / s. 3 / h; B represents the upper limit of seawater flow rate within the permissible sodium hypochlorite concentration range, in meters. 3 / h; 'a' represents the upper limit of the permissible sodium hypochlorite concentration, taken as 0.5 ppm. b is the design value for sodium hypochlorite concentration, taken as 0.3 ppm.

3. The intelligent marine biological control system of the variable frequency seawater cooling system according to claim 2, characterized in that, Within the interval between A and B, the required electrolysis current is calculated using the following formula: I = G / (β * K) In the formula, I represents the electrolysis current, measured in amperes (A). G is the required amount of available chlorine, G = seawater flow rate * design available chlorine concentration = B * b, with the unit being g / h; β is the current efficiency, taken as 0.9; K represents the theoretical energy production per ampere-hour, which is taken as 1.

32.

4. The intelligent marine biological control system of the variable frequency seawater cooling system according to claim 1, characterized in that, The seawater pump of the anti-marine biological device is equipped with a filter on the inlet side. The filter element is made of stainless steel or other seawater corrosion resistant materials, and the filter element precision is no more than 3mm. The filter is equipped with operating valves on both the inlet and outlet pipes.

5. The intelligent marine biological control system of the variable frequency seawater cooling system according to claim 1, characterized in that, The seawater pump of the anti-marine biological device is a centrifugal pump. The pump casing and impeller are made of materials resistant to seawater corrosion and are equipped with a variable frequency motor.

6. The intelligent marine biological control system of the variable frequency seawater cooling system according to claim 1, characterized in that, The outlet of the seawater pump of the anti-seawater biological device is connected to the electrolysis unit via a shut-off check valve, which is made of bronze or other materials resistant to seawater corrosion.

7. A smart marine organism control method for a variable frequency seawater cooling system, applied to the smart marine organism control system of the variable frequency seawater cooling system as described in any one of claims 1 to 6, characterized in that, The method includes: The number of intelligent marine biological defense systems with segmented flow regulation will be determined based on the specific ship type layout and the variable frequency seawater cooling system. The total flow rate corresponding to the variable frequency seawater pumps or anti-marine organism device seawater pumps operating on each seawater main pipe in each variable frequency seawater cooling system is superimposed and calculated. The total flow rate is then evenly distributed to the seawater valve boxes corresponding to the variable frequency seawater pumps. Variable frequency seawater pumps or anti-marine organism device seawater pumps pumping water in the same seawater valve box or the same group of seawater valve boxes are set as a group, and the total flow rate of the variable frequency seawater pumps or anti-marine organism device seawater pumps in this group is evenly distributed to the seawater valve boxes in this group. Based on the total flow rate of each variable frequency seawater cooling system, the maximum total amount of seawater that the electrolytic marine biological protection system needs to process is calculated. The total seawater volume from 0 to the maximum volume is segmented, and the number of segments and flow ranges are determined based on the project requirements. Based on the determined number of segments and flow ranges, a segmented flow table is compiled and the relevant information is synchronized to the electrolysis unit control box. When there is a flow demand in the seawater valve box, the electrolysis unit control box compares the flow value converted from the pressure signal with the pre-calculated segmented flow table, substitutes it into the appropriate segmented flow range, selects the corresponding effective chlorine demand value, and then adjusts the interval electrolysis current of the electrolysis unit to generate electrolyte within the allowable concentration range. The electrolyte is then delivered to the corresponding seawater valve box through the branch remote control valve corresponding to the seawater valve box with flow demand. The opening ratio of the branch remote control valve is determined based on the total flow signal uniformly converted from the discharge pressure signals of the anti-marine biological device seawater pump and each of the variable frequency seawater pumps, as well as the number of seawater valve boxes with flow demand.

8. The intelligent marine organism prevention method for the variable frequency seawater cooling system according to claim 7, characterized in that, Seawater pumps that are not part of a variable frequency seawater cooling system include at least ballast pumps or fire pumps. If, when calculating the total flow rate, a seawater pump that is not part of the variable frequency seawater cooling system is pumping water, the rated flow rate of the ballast pump or fire pump shall be added to the corresponding total flow rate.

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