A central fresh water cooling system for ships

Abstract

The present application discloses a central fresh water cooling system for ships, which belongs to the field of ship control technology. The system includes: a control end connected to a central cooling water pump for controlling the working state of the central cooling water pump; the central cooling water pump is connected to a work unit and is used to deliver fresh water to the work unit through a fresh water pipeline to recover the heat generated by the work unit; a frequency converter is provided on the first channel between the control end and the central cooling water pump, for receiving control instructions from the control end, determining the operating frequency of the central cooling water pump, and controlling the central cooling water pump to operate according to the operating frequency. This technical solution can achieve the purpose of automatically adjusting the operating power of the central cooling water pump, saving system energy, and improving the durability of the central cooling water pump and the reliability of cooling ship equipment.

Description

Technical Field

[0001] The present application belongs to the field of ship control technology, and specifically relates to a ship central fresh water cooling system. Background Art

[0002] With the continuous development of the shipping industry, the functions of ships are constantly improving, and the types and quantities of ship operating equipment are also increasing. In order to extend the service life of ship equipment and improve the safety of ship equipment during operation, the research on the cooling method of ship equipment has become very important.

[0003] The current method of cooling ship equipment is mainly to control the central cooling water pump in the ship cooling system to extract fresh water at maximum operating power, so as to transmit the fresh water to the pipelines of various ship equipment, and use the fresh water to exchange heat with the running ship equipment to achieve the purpose of cooling the ship equipment.

[0004] Since the existing ship equipment cooling method requires the central cooling water pump to always run at full load and cannot automatically adjust the operating power of the central cooling water pump, when using existing related technologies to cool ship equipment, there are problems such as poor durability of the central cooling water pump and large system energy loss. Summary of the Invention

[0005] The purpose of the embodiment of the present application is to provide a central fresh water cooling system for a ship, which solves the problems of poor durability of the central cooling water pump and large system energy loss in the prior art. By using a frequency converter to control the central cooling water pump to operate at different operating frequencies, the purpose of automatically adjusting the operating power of the central cooling water pump can be achieved, thereby saving system energy, improving the durability of the central cooling water pump and the reliability of cooling ship equipment.

[0006] In a first aspect, an embodiment of the present application provides a central freshwater cooling system for a ship, the system comprising: a control terminal, a central cooling water pump, and a work unit connected to the central cooling water pump via a freshwater pipeline; the work unit comprising: a main and auxiliary unit, a propulsion equipment unit, a cabin equipment unit, and an upper structure equipment unit; wherein:

[0007] The control end is connected to the central cooling water pump and is used to control the working state of the central cooling water pump;

[0008] The central cooling water pump is connected to the work unit and is used to deliver fresh water to the work unit through the fresh water pipeline to recover the heat generated by the work unit;

[0009] The system further comprises: a frequency converter; the frequency converter is arranged on the first channel between the control end and the central cooling water pump;

[0010] The frequency converter is used to receive the control instruction of the control end, determine the working frequency of the central cooling water pump, and control the central cooling water pump to operate according to the working frequency.

[0011] Furthermore, the control terminal is also used for:

[0012] If the inverter failure signal is received, an operation instruction is sent to the central cooling water pump through the second channel between the control end and the central cooling water pump to control the central cooling water pump to operate at maximum power.

[0013] Furthermore, the control terminal is also used for:

[0014] Obtain the operation status of each work group;

[0015] Calculate the fresh water flow required by the currently operating work group according to the operating conditions;

[0016] The operating frequency of the central cooling water pump is calculated according to the fresh water flow rate.

[0017] Furthermore, the control terminal is also used for:

[0018] Obtain the total fresh water flow required for all operations of each work group;

[0019] The capacity parameter of the central cooling water pump is calculated according to the total fresh water flow.

[0020] Furthermore, the system further comprises: a central cooler;

[0021] The central cooler is connected to the central cooling water pump and is used for performing heat exchange on the fresh water of the central cooler.

[0022] Furthermore, the central cooler is provided with a water storage tank, and the central cooler is specifically used for:

[0023] The fresh water is cooled to a preset temperature according to the temperature of the fresh water stored in the water storage tank and the return water temperature in the fresh water pipeline.

[0024] Furthermore, the system further comprises: an electric isolation valve;

[0025] The electric isolation valve is arranged on all fresh water pipelines connected to the working groups, and is used to control the on-off of the current fresh water pipeline according to the switch instruction of the control end.

[0026] Furthermore, the control terminal is also used for:

[0027] identifying that the main and auxiliary units are in the first state, issuing a closing instruction to an electric isolation valve disposed on a fresh water pipeline connected to the main and auxiliary units, so as to cut off the fresh water supply in the fresh water pipeline connected to the main and auxiliary units;

[0028] identifying that the main and auxiliary units are in the second state, issuing an opening instruction to the electric isolation valve disposed on the fresh water pipeline connected to the main and auxiliary units, so as to provide fresh water supply in the fresh water pipeline connected to the main and auxiliary units;

[0029] When it is identified that the main and auxiliary generator sets are in the third state, the current device temperature of the main and auxiliary generator sets is obtained, so as to issue an electric isolation valve failure alarm when the current device temperature is higher than a temperature threshold.

[0030] Furthermore, the control terminal is also used for:

[0031] identifying that the other groups in the working group except the main and auxiliary groups are in the first state, issuing a closing command to the electric isolation valve disposed on the fresh water pipeline connected to the other groups, so as to disconnect the fresh water supply in the fresh water pipeline connected to the propulsion equipment group;

[0032] When it is identified that the other group is in the third state, an opening instruction is issued to the electric isolation valve configured on the fresh water pipeline connected to the other group, and the current equipment temperature of the other group is obtained, so as to issue an electric isolation valve failure alarm when the current equipment temperature is higher than the temperature threshold.

[0033] Furthermore, the system further comprises: a three-way temperature control valve;

[0034] The three-way temperature control valve is arranged on the fresh water pipeline where the required fresh water flow of the working group is lower than the maximum fresh water flow, and is used to control the fresh water flow in the fresh water pipeline.

[0035] In a second aspect, an embodiment of the present application provides a method for central fresh water cooling of a ship, the method being executed by a central fresh water cooling control system of the ship, the central fresh water cooling control system of the ship being configured with a control terminal, a central cooling water pump, and a work group connected to the central cooling water pump via a fresh water pipeline; the work group comprising: at least one of a main and auxiliary unit, a propulsion equipment group, a cabin equipment group, and an upper structure equipment group; the method comprising:

[0036] Connecting the central cooling water pump via the control terminal to control the working state of the central cooling water pump;

[0037] The central cooling water pump is connected to the working group and delivers fresh water to the working group through the fresh water pipeline to recover the heat generated by the working group;

[0038] The ship central fresh water cooling control system is further equipped with: a frequency converter; the frequency converter is arranged on the first channel between the control end and the central cooling water pump;

[0039] The frequency converter receives the control instruction from the control end, determines the operating frequency of the central cooling water pump, and controls the central cooling water pump to operate according to the operating frequency.

[0040] In a third aspect, an embodiment of the present application provides an electronic device comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the second aspect.

[0041] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the second aspect are implemented.

[0042] In a fifth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the second aspect.

[0043] In an embodiment of the present application, the control terminal is connected to the central cooling water pump and is used to control the working state of the central cooling water pump; the central cooling water pump is connected to the work unit and is used to deliver fresh water to the work unit through the fresh water pipeline to recover the heat generated by the work unit; the system also includes: a frequency converter; the frequency converter is arranged on the first channel between the control terminal and the central cooling water pump; the frequency converter is used to receive control instructions from the control terminal, determine the operating frequency of the central cooling water pump, and control the central cooling water pump to operate according to the operating frequency. The above-mentioned ship central fresh water cooling system solves the problems of poor durability of central cooling water pumps and large system energy loss in the prior art. By using the frequency converter to control the central cooling water pump to operate at different operating frequencies, the purpose of automatically adjusting the operating power of the central cooling water pump can be achieved, saving system energy, improving the durability of the central cooling water pump, and the reliability of cooling ship equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a structural diagram of a central fresh water cooling system for a ship provided in Example 1 of the present application;

[0045] Figure 2 This is a structural diagram of a central fresh water cooling system for a ship provided in Example 2 of the present application;

[0046] Figure 3 This is a structural diagram of a central fresh water cooling system for a ship provided in Example 3 of the present application;

[0047] Figure 4 This is a structural diagram of a central fresh water cooling system for a ship provided in Example 4 of the present application;

[0048] Figure 5 This is a structural diagram of a central fresh water cooling system for a ship provided in Example 5 of the present application;

[0049] Figure 6 This is a flow chart of a method for central fresh water cooling of a ship provided in Example 6 of the present application;

[0050] Figure 7 It is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should also be noted that, for ease of description, only parts related to the present application, not all of the contents, are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0052] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0053] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0054] In the following, in conjunction with the accompanying drawings, a ship central fresh water cooling system provided by an embodiment of the present application is described in detail through specific embodiments and application scenarios.

[0055] Example 1

[0056] Figure 1 This is a structural diagram of a central fresh water cooling system for a ship provided in Example 1 of the present application. The system comprises: a control terminal 101, a central cooling water pump 102, and a work unit 104 connected to the central cooling water pump 102 via a fresh water pipeline 103; the work unit 104 comprises: at least one of a main and auxiliary unit 1041, a propulsion equipment group 1042, a cabin equipment group 1043, and an upper construction equipment group 1044. Figure 1 As shown, specifically including the following:

[0057] The control terminal 101 is connected to the central cooling water pump 102 and is used to control the working state of the central cooling water pump 102;

[0058] The central cooling water pump 102 is connected to the working group 104 and is used to deliver fresh water to the working group 104 through the fresh water pipeline 103 to recover the heat generated by the working group 104;

[0059] The system further includes: a frequency converter 105; the frequency converter 105 is provided on the first channel between the control terminal 101 and the central cooling water pump 102;

[0060] The frequency converter 105 is configured to receive a control instruction from the control terminal 101 and determine an operating frequency of the central cooling water pump 102 to control the central cooling water pump 102 to operate at the operating frequency.

[0061] First, the application scenario of this solution can be a scenario where fresh water is used to cool the heat generated by equipment, especially a scenario where fresh water is used to cool multiple equipment on the same ship.

[0062] Based on the above usage scenarios, it can be understood that the executor of this solution can be the ship's central fresh water cooling control system.

[0063] The control terminal 101 can be a port that controls the operating status of devices in the system and the transmission and reception of signals, such as a smart terminal such as a mobile phone, computer, or tablet. The central cooling water pump 102 can be a device used to pump fresh water for equipment. The central cooling water pump 102 can provide fresh water to all equipment on the same ship. The fresh water pipeline 103 can be used to transmit and return fresh water to all equipment on the same ship. The work group 104 can be a group of equipment on the ship that can be cooled by fresh water. The work group 104 includes at least one of the following: a main and auxiliary engine group 1041, a propulsion equipment group 1042, an engine room equipment group 1043, and an overhead equipment group 1044. The main and auxiliary engine group 1041 can include the main and auxiliary engine equipment on the ship, such as the diesel engine that provides power to the ship and the generator that provides electricity to the ship. The propulsion equipment group 1042 can include equipment related to the ship's propulsion, such as inverters, transformers, pod bodies, and shaft propulsion equipment. The engine room equipment group 1043 may include equipment installed in the ship's engine room, such as steering gear, fresh water generators, and refrigeration compressors. The superstructure equipment group 1044 may include equipment in the ship's superstructure, such as air conditioners and refrigeration equipment. The inverter 105 may be a device used to control the operating power of the central cooling water pump 102. The first channel may be a channel that can adjust the operating power of the central cooling water pump 102 via the inverter 105.

[0064] In one embodiment, the control terminal 101 is connected to the central cooling water pump 102 via a wired or wireless connection, and sends control instructions to the central cooling water pump 102 via a wired or wireless connection to control the operating state of the central cooling water pump 102. The operating state includes whether the central cooling water pump 102 is running and the operating power.

[0065] In one embodiment, the central cooling water pump 102 is connected to the working units 103 via the fresh water pipeline 103. The central cooling water pump 102 can pump fresh water required for cooling the ship's equipment, and then the fresh water pumped by the central cooling water pump 102 is transported to the operating working units 104 via the fresh water pipeline 103. The fresh water is used to recover heat generated by the working units 104, thereby achieving the purpose of equipment cooling.

[0066] In one embodiment, multiple channels can be provided between the control terminal 101 and the central cooling water pump 102, and communication can be performed through one of the multiple channels. The frequency converter 105 is provided on the first channel between the control terminal 101 and the central cooling water pump 102. The frequency converter 105 receives control instructions from the control terminal 101 through the first channel, and determines the operating frequency that the central cooling water pump 102 needs to reach under the current operating state of the working group 103 based on the control instructions, thereby controlling the central cooling water pump 102 to operate at the operating frequency.

[0067] Optionally, the system further comprises: a central cooler;

[0068] The central cooler is connected to the central cooling water pump 102 for performing heat exchange on the fresh water of the central cooler.

[0069] The central cooler may be a device that uses seawater to cool fresh water, and may store the fresh water required for heat exchange with the ship equipment.

[0070] In one embodiment, the central cooler can use seawater to perform heat exchange with the fresh water stored therein, and is connected to the central cooling water pump 102 through the fresh water pipeline 103 to provide the central cooling water pump with fresh water for equipment cooling.

[0071] This solution cools the fresh water used for cooling ship equipment by setting up a central cooler, and connecting the central cooler to a central cooling water pump, so that cooled fresh water can be directly provided to the central cooling water pump, thereby improving the reliability of equipment cooling.

[0072] Optionally, the central cooler is provided with a water storage tank, and the central cooler is specifically used for:

[0073] The fresh water is cooled to a preset temperature according to the temperature of the fresh water stored in the water storage tank and the return water temperature in the fresh water pipeline 103 .

[0074] The water tank may be a device for storing fresh water. The fresh water may include at least one of fresh water obtained through heat exchange with seawater and fresh water obtained through heat exchange with ship equipment. The preset temperature may be the fresh water temperature required for cooling the ship equipment.

[0075] In one embodiment, the central cooler is provided with a water tank for storing fresh water for cooling marine equipment. The central cooler can determine the seawater flow rate required to cool the fresh water to a preset temperature based on the temperature of the fresh water stored in the water tank, the return water temperature transmitted through the fresh water pipeline 103, and a preset temperature, and then cool the fresh water to the preset temperature based on the seawater flow rate.

[0076] In this solution, the central cooler stores fresh water in a water tank and cools the fresh water to a preset temperature based on the temperature of the fresh water stored in the water tank and the return water temperature in the fresh water pipeline. This can achieve the effect of real-time cooling of fresh water, and can then provide cooled fresh water to the central cooling water pump at any time, thereby improving the cooling efficiency of ship equipment.

[0077] The technical solution provided by the embodiment of the present application is as follows: the control end is connected to the central cooling water pump and is used to control the working state of the central cooling water pump; the central cooling water pump is connected to the work unit and is used to transport fresh water to the work unit through the fresh water pipeline to recover the heat generated by the work of the work unit; the system also includes: a frequency converter; the frequency converter is set on the first channel between the control end and the central cooling water pump; the frequency converter is used to receive control instructions from the control end, determine the working frequency of the central cooling water pump, and control the central cooling water pump to operate according to the working frequency. The above-mentioned ship central fresh water cooling system solves the problems of poor durability of the central cooling water pump and large system energy loss in the prior art. By using the frequency converter to control the central cooling water pump to operate at different working frequencies, the purpose of automatically adjusting the operating power of the central cooling water pump can be achieved, saving system energy, improving the durability of the central cooling water pump and the reliability of cooling ship equipment.

[0078] Example 2

[0079] Figure 2 This is a structural diagram of a ship central fresh water cooling system provided in Example 2 of the present application.

[0080] like Figure 2 As shown, specifically including the following:

[0081] The control terminal 101 is further used for:

[0082] If a failure signal of the frequency converter 105 is received, an operation instruction is sent to the central cooling water pump 102 through a second channel between the control terminal 101 and the central cooling water pump 102 to control the central cooling water pump 102 to operate at maximum power.

[0083] The failure signal may be an alarm signal indicating a fault in the inverter 105. The fault may include at least one of a fault in the inverter itself and a functional fault. When the inverter 105 fails, the inverter 105 will be unable to accurately control the operating frequency of the central cooling water pump 102. The second channel may be a channel directly connecting the control terminal 101 to the central cooling water pump 102.

[0084] In one embodiment, since multiple channels can be set between the control end 101 and the central cooling water pump 102, the frequency converter 105 can actively report the failure signal to trigger channel switching in the event of failure. Therefore, if the control end 101 receives the failure signal of the frequency converter 105, the connection relationship with the central cooling water pump 102 will be switched from the first channel to the second channel, and an operation instruction will be issued to the central cooling water pump 102 through the second channel to control the central cooling water pump 102 to operate at maximum power.

[0085] The technical solution provided in the embodiment of the present application is that if the control end receives a failure signal of the inverter, an operation instruction is sent to the central cooling water pump through the second channel to control the central cooling water pump to operate at maximum power, thereby avoiding equipment cooling problems caused by inverter failure and improving the reliability of ship equipment cooling.

[0086] Example 3

[0087] Figure 3 This is a structural diagram of a ship central fresh water cooling system provided in Example 3 of the present application.

[0088] like Figure 3 As shown, specifically including the following:

[0089] The control terminal 101 is further used for:

[0090] Obtaining the operation status of each work group 104;

[0091] Calculate the fresh water flow required by the currently operating working group 104 according to the operating conditions;

[0092] The operating frequency of the central cooling water pump 102 is calculated according to the fresh water flow rate.

[0093] The operating status of each workgroup 104 may refer to whether each group in the workgroup 104 is operating.

[0094] In one embodiment, the control end 101 can determine whether each group in the working group 104 is running based on whether the operating power of each group is 0, and calculate the total fresh water flow required to cool all currently running working groups 104 based on the operating conditions of each group, and then calculate the operating frequency required for the central cooling water pump 102 to reach the total fresh water flow.

[0095] Optionally, the control terminal 101 is further configured to:

[0096] Obtain the total fresh water flow required for all operations of each work group 104;

[0097] The capacity parameter of the central cooling water pump 102 is calculated according to the total fresh water flow rate.

[0098] The capacity parameters of the central cooling water pump 102 include the model parameters and operating parameters of the central cooling water pump 102 , and also include the capacity requirements that the water tank in the central cooler connected to the central cooling water pump 102 needs to meet.

[0099] In one embodiment, the control end 101 can calculate the fresh water flow required for each work group 104 during operation to obtain the total fresh water flow required for all work groups 104 during operation, and calculate the operating frequency that the central cooling water pump 102 needs to reach based on the total fresh water flow, and then determine the capacity parameters of the central cooling water pump based on the total fresh water flow and the operating frequency.

[0100] This solution calculates the total fresh water flow required for all operating units of each workgroup and calculates the capacity parameters of the central cooling water pump based on the total fresh water flow. This improves the accuracy of central cooling water pump selection, avoids the problem of poor cooling effect of ship equipment due to the capacity parameters of the central cooling water pump and central cooler not meeting system requirements, and improves the reliability of ship equipment cooling.

[0101] The technical solution provided in the embodiment of the present application is that the control end calculates the fresh water flow required by the currently operating work group according to the operating conditions of each work group, and calculates the operating frequency of the central cooling water pump according to the fresh water flow, thereby achieving the effect of fixed-frequency and fixed-point control of the operating power of the central fresh water cooling water pump, avoiding the problem of the central fresh water cooling water pump continuously running at full load, improving the durability of the central fresh water cooling water pump and reducing the energy loss of the system.

[0102] Example 4

[0103] Figure 4This is a structural diagram of a central fresh water cooling system for a ship provided in Example 4 of the present application. The system also includes: an electric isolation valve 106. Figure 4 As shown, specifically including the following:

[0104] The electric isolation valve 106 is configured on all fresh water pipelines 103 connected to the working group 104 and is used to control the on / off of the current fresh water pipeline 103 according to the switch instruction of the control end 101.

[0105] The electric isolation valve 106 may be a valve for isolating the fresh water transmitted in the fresh water pipeline 103 connected to the working group 104 .

[0106] In one embodiment, the system further includes an electric isolation valve 106. The electric isolation valve 106 is configured on all fresh water pipelines 103 connected to the work groups 104. When one or more groups of equipment in the work groups 104 start or stop operating, the control terminal 101 issues a corresponding open or close command to the electric isolation valve 106. The electric isolation valve 106 then controls the flow of fresh water in the fresh water pipeline 103 based on the on / off command from the control terminal 101.

[0107] Optionally, the system further comprises: a three-way temperature control valve;

[0108] The three-way temperature control valve is configured on the fresh water pipeline 103 where the required fresh water flow of the working group 104 is lower than the maximum fresh water flow, and is used to control the fresh water flow in the fresh water pipeline 103.

[0109] The three-way temperature control valve may be a valve for controlling the flow of fresh water transmitted in the fresh water pipeline 103 .

[0110] In one embodiment, the system further includes a three-way temperature control valve. This valve can control the flow rate of fresh water transmitted through the fresh water pipeline 103 by adjusting the degree of opening and closing of the valve, thereby controlling the temperature of the cooled marine equipment. When the required fresh water flow rate of the work group 104 is lower than the maximum flow rate of the fresh water pipeline 103, the three-way temperature control valve can be installed on the fresh water pipeline 103 and the flow rate in the fresh water pipeline 103 can be controlled by adjusting the degree of opening and closing of the three-way temperature control valve.

[0111] This solution achieves the goal of controlling the fresh water flow in the fresh water pipeline by using the three-way temperature control valve by configuring the three-way temperature control valve on the fresh water pipeline where the required fresh water flow of the work group is lower than the maximum fresh water flow. This avoids the problem of excessive heat being taken away when using fresh water to cool the equipment, which affects the equipment's operating performance, and improves the accuracy and cooling effect of the equipment.

[0112] Example 5

[0113] Figure 5 This is a structural diagram of a ship central fresh water cooling system provided in Example 5 of the present application.

[0114] like Figure 5 As shown, specifically including the following:

[0115] The control terminal 101 is further used for:

[0116] recognizing that the main and auxiliary generator sets 1041 are in the first state, issuing a closing command to the electric isolation valve disposed on the fresh water pipeline 103 connected to the main and auxiliary generator sets 1041, so as to cut off the fresh water supply in the fresh water pipeline 103 connected to the main and auxiliary generator sets 1041;

[0117] When recognizing that the main and auxiliary generator sets 1041 are in the second state, an opening instruction is issued to the electric isolation valve disposed on the fresh water pipeline 103 connected to the main and auxiliary generator sets 1041 to provide fresh water supply in the fresh water pipeline 103 connected to the main and auxiliary generator sets 1041;

[0118] When it is identified that the main and auxiliary generator sets 1041 are in the third state, the current device temperature of the main and auxiliary generator sets 1041 is obtained, so as to issue an electric isolation valve failure alarm when the current device temperature is higher than a temperature threshold.

[0119] The first state may be when the equipment is stopped or stationary. The second state may be when the main and auxiliary equipment are ready for operation. The ready state may be when the main and auxiliary equipment are ready for operation at any time. The third state may be when the equipment is started or in operation. The temperature threshold may be the maximum temperature that the equipment in work group 104 can reach during safe operation. The electric isolation valve fault alarm may be a signal used to notify ship personnel of a fault in the electric isolation valve, including light, sound, and text prompts.

[0120] In one embodiment, the control terminal 101 may receive current status information of each main and auxiliary engine device in the main and auxiliary engine group 1041 and confirm the current status of the main and auxiliary engine group 1041. For example, after the ship's crew completes the inspection of the main and auxiliary engine devices and confirms that the main and auxiliary engine devices can be started at any time, the control terminal 101 may receive the vehicle preparation completion information reported by the ship's crew, and further confirm that the main and auxiliary engine group 1041 is currently in the second status.

[0121] In one embodiment, when the control end 101 recognizes that the main and auxiliary units 1041 are in the first state, in order to stop the continued cooling of the main and auxiliary equipment by fresh water to achieve the purpose of energy saving, a closing command can be issued to the electric isolation valve configured on the fresh water pipeline 103 connected to the main and auxiliary units 1041 to disconnect the fresh water supply in the fresh water pipeline 103 connected to the main and auxiliary units 1041 through the electric isolation valve.

[0122] In one embodiment, when the control end 101 recognizes that the main and auxiliary units 1041 are in the second state, in order to avoid the problem of untimely supply of fresh water for cooling when the main and auxiliary equipment are running, an opening command can be issued to the electric isolation valve on the fresh water pipeline 103 connected to the main and auxiliary units 1041 when the main and auxiliary units 1041 are in the second state, so that the fresh water can pass through the fresh water pipeline 103 to reach the fresh water position for cooling the main and auxiliary units 1041.

[0123] In one embodiment, when the control end 101 identifies that the main and auxiliary units 1041 are in the third state, in order to avoid the problem of untimely equipment cooling due to the failure of the electric isolation valve, the current equipment temperature of the main and auxiliary units 1041 can be obtained in real time, and the current equipment temperature can be compared with the temperature threshold of the equipment to issue an electric isolation valve failure alarm when the current equipment temperature is higher than the temperature threshold.

[0124] Optionally, the control terminal 101 is further configured to:

[0125] When it is recognized that the other groups in the working group 104 except the main and auxiliary engine group 1041 are in the first state, a closing instruction is issued to the electric isolation valve disposed on the fresh water pipeline 103 connected to the other groups, so as to cut off the fresh water supply in the fresh water pipeline 103 connected to the propulsion equipment group 1042;

[0126] When it is identified that the other group is in the third state, an opening instruction is issued to the electric isolation valve configured on the fresh water pipeline 103 connected to the other group, and the current device temperature of the other group is obtained to issue an electric isolation valve failure alarm when the current device temperature is higher than the temperature threshold.

[0127] In one embodiment, when the control end 101 identifies that the other groups in the working group 104 except the main and auxiliary equipment group 1041 are in the first state, in order to stop the continued cooling of the main and auxiliary equipment with fresh water to achieve the purpose of energy saving, a closing command can be issued to the electric isolation valve configured on the fresh water pipeline 103 connected to the other groups, so as to disconnect the fresh water supply in the fresh water pipeline 103 connected to the propulsion equipment group 1042 through the electric isolation valve.

[0128] In one embodiment, since the other groups in the working group 104, other than the main and auxiliary generator sets 1041, are not in a standby state, the control terminal 101, upon identifying that the other groups are in the third state, may issue an opening command to the electric isolation valves connected to the fresh water pipelines 103 to provide cooling water to the equipment in the other groups. Furthermore, to prevent untimely cooling of equipment due to a malfunction of the electric isolation valves, the control terminal 101 acquires the current device temperatures of the other groups in real time and compares them with a temperature threshold. If the current device temperature exceeds the threshold, an electric isolation valve malfunction alarm is issued.

[0129] This solution identifies the current status of other groups in the working group except the main and auxiliary units through the control end, and controls the opening and closing status of the electric isolation valve according to the different status of the other groups, thereby avoiding energy loss caused by continuous cooling of the equipment by fresh water. By obtaining the current equipment temperature of the other groups and issuing an electric isolation valve fault alarm when the current equipment temperature is higher than the temperature threshold, the problem of untimely cooling of equipment in other groups due to electric isolation valve failure can be avoided, thereby improving the reliability of cooling of ship equipment.

[0130] The technical solution provided in the embodiment of the present application identifies the operating status of the main and auxiliary equipment in the main and auxiliary groups through the control end, and controls the opening and closing status of the electric isolation valve according to different operating statuses, so as to achieve the purpose of providing or disconnecting fresh water for cooling the main and auxiliary equipment. It can avoid the continuous cooling of the main and auxiliary equipment group by fresh water, reduce the energy loss of the system, and obtain the equipment temperature of the main and auxiliary equipment when the main and auxiliary equipment group is running, and issue an alarm when the equipment temperature is higher than the preset temperature, which can avoid the problem of untimely equipment cooling due to failure of the electric isolation valve, and improve the reliability of equipment cooling.

[0131] Example 6

[0132] Figure 6This is a flow chart of a method for central fresh water cooling of a ship provided in Example 6 of the present application. The method is executed by a central fresh water cooling control system of a ship, which is equipped with a control terminal, a central cooling water pump, and a work group connected to the central cooling water pump via a fresh water pipeline; the work group includes at least one of: a main and auxiliary unit, a propulsion equipment group, a cabin equipment group, and an upper construction equipment group. Figure 6 As shown, the specific steps include:

[0133] S601, connecting to the central cooling water pump via the control terminal to control the working state of the central cooling water pump;

[0134] S602, the central cooling water pump is connected to the work unit and delivers fresh water to the work unit through the fresh water pipeline to recover heat generated by the work unit;

[0135] S603, the ship central fresh water cooling control system is further equipped with: a frequency converter; the frequency converter is arranged on the first channel between the control end and the central cooling water pump;

[0136] S604: Receive a control instruction from the control end through the frequency converter, determine the operating frequency of the central cooling water pump, and control the central cooling water pump to operate according to the operating frequency.

[0137] The technical solution provided by the embodiment of the present application is to connect the control end with the central cooling water pump to control the working state of the central cooling water pump; the central cooling water pump is connected to the work unit and supplies fresh water to the work unit through the fresh water pipeline to recover the heat generated by the work unit; the ship central fresh water cooling control system is also equipped with: a frequency converter; the frequency converter is set on the first channel between the control end and the central cooling water pump; the frequency converter receives the control instruction of the control end, determines the working frequency of the central cooling water pump, and controls the central cooling water pump to operate according to the working frequency. The above-mentioned ship central fresh water cooling method solves the problems of poor durability of the central cooling water pump and large system energy loss in the prior art. By using the frequency converter to control the central cooling water pump to operate at different working frequencies, the purpose of automatically adjusting the operating power of the central cooling water pump can be achieved, saving system energy, improving the durability of the central cooling water pump and the reliability of cooling ship equipment.

[0138] In an embodiment of the present application, a central fresh water cooling system for a ship may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0139] The embodiment of the present application provides a central fresh water cooling system for ships that can implement the various processes implemented in the above-mentioned method embodiments. To avoid repetition, they will not be described here.

[0140] Example 7

[0141] like Figure 7 As shown, an embodiment of the present application further provides an electronic device 700, including a processor 701, a memory 702, and a program or instruction stored in the memory 702 and executable on the processor 701. When the program or instruction is executed by the processor 701, the various processes of the above-mentioned embodiment of the central fresh water cooling system of a ship are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0142] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0143] Example 8

[0144] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned embodiment of the central fresh water cooling system of a ship are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0145] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[0146] Embodiment 9

[0147] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the central fresh water cooling system of a ship, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0148] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0149] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0150] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0151] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

[0152] The above are only preferred embodiments of the present application and the technical principles employed. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that are possible for those skilled in the art will not depart from the scope of protection of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments and may include more other equivalent embodiments without departing from the concept of the present application. The scope of the present application is determined by the scope of the claims.

Claims

1. A central fresh water cooling system for a ship, characterized in that: The system includes: a control end, a central cooling water pump, a work unit connected to the central cooling water pump via a fresh water pipeline, a central cooler, and a three-way temperature control valve; the work unit includes: at least one of a main and auxiliary unit, a propulsion equipment unit, a cabin equipment unit, and an upper construction equipment unit; wherein: The control end is connected to the central cooling water pump and is used to control the working state of the central cooling water pump; The central cooling water pump is connected to the work unit and is used to deliver fresh water to the work unit through the fresh water pipeline to recover the heat generated by the work unit; The central cooler is connected to the central cooling water pump and is used to perform heat exchange on the fresh water of the central cooler; The system further comprises: a frequency converter; the frequency converter is arranged on the first channel between the control end and the central cooling water pump; The frequency converter is used to receive the control instruction of the control terminal, determine the operating frequency of the central cooling water pump, and control the central cooling water pump to operate according to the operating frequency; The control end is further configured to, upon receiving the inverter failure signal, issue an operation instruction to the central cooling water pump through a second channel between the control end and the central cooling water pump to control the central cooling water pump to operate at maximum power, obtain the operation status of each work group, calculate the fresh water flow required by the currently operating work group based on the operation status, and calculate the operating frequency of the central cooling water pump based on the fresh water flow; The three-way temperature control valve is arranged on the fresh water pipeline where the required fresh water flow of the working group is lower than the maximum fresh water flow, and is used to control the fresh water flow in the fresh water pipeline.

2. The ship central fresh water cooling system according to claim 1, characterized in that: The control terminal is also used for: Obtain the total fresh water flow required for all operations of each work group; The capacity parameter of the central cooling water pump is calculated according to the total fresh water flow.

3. The central fresh water cooling system for ships according to claim 1, characterized in that: The central cooler is provided with a water storage tank, and the central cooler is specifically used for: The fresh water is cooled to a preset temperature according to the temperature of the fresh water stored in the water storage tank and the return water temperature in the fresh water pipeline.

4. The ship central fresh water cooling system according to claim 1, characterized in that: The system further comprises: an electric isolation valve; The electric isolation valve is arranged on all fresh water pipelines connected to the working groups, and is used to control the on-off of the current fresh water pipeline according to the switch instruction of the control end.

5. The central fresh water cooling system for ships according to claim 4, characterized in that: The control terminal is also used for: identifying that the main and auxiliary units are in the first state, issuing a closing instruction to an electric isolation valve disposed on a fresh water pipeline connected to the main and auxiliary units, so as to cut off the fresh water supply in the fresh water pipeline connected to the main and auxiliary units; identifying that the main and auxiliary units are in the second state, issuing an opening instruction to the electric isolation valve disposed on the fresh water pipeline connected to the main and auxiliary units, so as to provide fresh water supply in the fresh water pipeline connected to the main and auxiliary units; When it is identified that the main and auxiliary generator sets are in the third state, the current device temperature of the main and auxiliary generator sets is obtained, so as to issue an electric isolation valve failure alarm when the current device temperature is higher than a temperature threshold.

6. The central fresh water cooling system for ships according to claim 4, characterized in that: The control terminal is also used for: identifying that the other groups in the working group except the main and auxiliary groups are in the first state, issuing a closing command to the electric isolation valve disposed on the fresh water pipeline connected to the other groups, so as to disconnect the fresh water supply in the fresh water pipeline connected to the propulsion equipment group; When it is identified that the other group is in the third state, an opening instruction is issued to the electric isolation valve configured on the fresh water pipeline connected to the other group, and the current equipment temperature of the other group is obtained, so as to issue an electric isolation valve failure alarm when the current equipment temperature is higher than the temperature threshold.

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