Heat dissipation system of marine electrical module

Abstract

The utility model belongs to the technical field of heat dissipation of electrical modules, and particularly relates to a heat dissipation system of a marine electrical module, which comprises a partition heat dissipation system, an internal circulation heat dissipation system and a control system. The partition heat dissipation system at least comprises a high heat dissipation subsystem and a medium-low heat dissipation subsystem which are independently arranged and respectively comprise a first valve body, a heat dissipation device, a second valve body, a detection element, a pipeline and a corresponding electrical module. The internal circulation heat dissipation system is arranged in parallel with the high heat dissipation subsystem and the medium-low heat dissipation subsystem, comprises a one-way valve and a water pump and is used for achieving circulation of cooling water when water supply is interrupted. The control system controls switching of the valve bodies based on the temperature, pressure and flow signals of the cooling liquid. The technical problem that a heat dissipation system in the prior art does not perform partition management on a heat source and lacks effective temporary water supply equipment is solved, efficient cooling flow is provided under different heat dissipation requirements of the electrical module, the temperature of the system is maintained to be stable, and the heat dissipation effect and circulating supplement of cooling liquid are ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electrical module heat dissipation, specifically, relate to a marine electrical module's heat dissipation system. BACKGROUND

[0002] In modern ships, the stable operation of high-power electrical modules highly depends on the effectiveness of the heat dissipation system. To meet this demand, water-cooled heat dissipation technology is commonly used at present because of its high heat dissipation efficiency. However, the water-cooled heat dissipation system relies heavily on the continuous supply of cooling water during operation. Once the supply of cooling water is interrupted, the system will immediately lose its heat dissipation capacity, causing the temperature of the electrical module to rise rapidly. This temperature rise may exceed the safe operating temperature (such as 90°C) in a short time, causing the system to shut down and affecting the normal operation of the entire ship. More seriously, overheating of the equipment may cause the electrical module to malfunction, thereby increasing maintenance and operating costs.

[0003] The existing marine high-power electrical module heat dissipation system as shown in the accompanying drawings Figure 1 Generally, cooling water is introduced into the internal waterway of the electrical module A through the water inlet, and is discharged from the water outlet after heat dissipation. To cope with the situation of interruption of cooling water supply, the system is configured with a fan for each electrical module A. When the water supply is interrupted, the fan B is started to assist heat dissipation by air cooling to avoid overheating of the electrical module A.

[0004] However, the existing heat dissipation system has the following main defects:

[0005] 1. No zoning management of heat sources: In the existing heat dissipation system, different electrical modules generate different amounts of heat, but the heat dissipation system does not have reasonable zoning management for different heat sources, and all electrical modules are cooled according to the same cooling temperature. This design causes some heat dissipation modules to be unable to achieve the best working state, thereby reducing the heat dissipation performance of the entire system and affecting the operating efficiency of the electrical module.

[0006] 2. Lack of effective temporary water supply equipment: In the case of interruption of external cooling water supply, the existing heat dissipation system lacks effective temporary water supply equipment and cannot maintain normal circulation of cooling water when the water supply is interrupted. Although some systems have added the function of internal circulation heat dissipation, they rely only on the residual cooling liquid in the pipeline for circulation heat dissipation, which cannot meet the heat dissipation needs of the electrical module. In the case of long-term interruption of water supply, the heat dissipation capacity of the electrical module will be greatly reduced, increasing the risk of overheating of the equipment.

[0007] Therefore, there is an urgent need for a more efficient and reliable heat dissipation system to overcome the defects in the prior art and improve the overall performance of the heat dissipation system. UTILITY MODEL CONTENTS

[0008] The utility model discloses to the prior art's insufficient, provide a marine electrical module's heat dissipation system, solved the marine electrical module uneven heat dissipation, temperature control difficult problem, through the independent layout of high heat dissipation subsystem and low heat dissipation subsystem, parallel internal circulation heat dissipation system and water tank, provide efficient cooling flow under the different heat dissipation demand of electrical module, maintain system temperature stable, ensure the heat dissipation effect and the circulation of cooling liquid.

[0009] In order to realize above technical purpose, the utility model will adopt the following technical scheme:

[0010] A marine electrical module's heat dissipation system, it include:

[0011] Partition heat dissipation system, the partition heat dissipation system at least includes high heat dissipation subsystem and low heat dissipation subsystem, the layout of high heat dissipation subsystem and low heat dissipation subsystem is independently set up each other, and all includes first valve body, radiator, second valve body, detection element, pipeline and each heat dissipation subsystem corresponding electrical module;The radiator is connected with first valve body, electrical module and second valve body in proper order through pipeline, and first valve body has first water inlet, second water inlet and water outlet, and second valve body has water inlet, first water outlet and second water outlet;

[0012] Internal circulation heat dissipation system, the internal circulation heat dissipation system is set up in parallel with high heat dissipation subsystem and low heat dissipation subsystem, and includes check valve and water pump, and the water outlet of check valve is connected with the second water inlet of first valve body of high heat dissipation subsystem and low heat dissipation subsystem through pipeline, and the water inlet of water pump is connected with the second water outlet of second valve body of high heat dissipation subsystem and low heat dissipation subsystem through pipeline;

[0013] Control system, the control system is signal connected with first valve body, second valve body, detection element, water pump, and the control system is used for based on the cooling liquid temperature, pressure and flow signal of detection element measured control switching first valve body and second valve body;

[0014] First valve body and second valve body have three kinds of switching states: in the first kind of switching state, the first water inlet of first valve body communicates with the radiator, and the second water inlet of first valve body is closed, and the water outlet of first valve body communicates with the electrical module, and the water inlet of second valve body communicates with the electrical module, and the first water outlet of second valve body communicates with the radiator, and the second water outlet of second valve body is closed;

[0015] In the second switching state, the first water inlet of the first valve body is communicated with the radiator, the second water inlets of the first valve bodies of the high heat dissipation subsystem and the medium and low heat dissipation subsystem are simultaneously communicated with the water outlet of the one-way valve, the water outlet of the first valve body is communicated with the electrical module, the water inlet of the second valve body is communicated with the electrical module, the first water outlets of the second valve bodies of the high heat dissipation subsystem and the medium and low heat dissipation subsystem are simultaneously communicated with the radiator, and the second water outlet of the second valve body is communicated with the water inlet of the water pump;

[0016] In the third switching state, the first water inlet of the first valve body and the first water outlet of the second valve body are closed, the second water inlet of the first valve body of the high heat dissipation subsystem and the medium and low heat dissipation subsystem is connected to the water outlet of the one-way valve at the same time, the water outlet of the first valve body and the water inlet of the second valve body are connected to the electrical module respectively, and the second water outlet of the second valve body of the high heat dissipation subsystem and the medium and low heat dissipation subsystem is connected to the water inlet of the water pump at the same time.

[0017] In a preferred implementation, further, the internal circulation heat dissipation system also includes a water tank; the water tank is arranged between the second valve bodies of the high heat dissipation subsystem and the medium and low heat dissipation subsystem and the connecting pipelines of the water pump.

[0018] In a preferred implementation, further, the high heat dissipation subsystem and the medium and low heat dissipation subsystem also include a fan coil assembly; the fan coil assembly is arranged between the first valve body and the connecting pipeline of the electrical module.

[0019] In a preferred implementation, further, the fan coil unit assembly includes a pipe and a fan; the fan is arranged on the periphery of the pipe.

[0020] In a preferred implementation, further, the pipelines are distributed in an S-shaped structure.

[0021] In a preferred implementation, further, adjacent walls of the pipe are connected by fins.

[0022] In a preferred implementation, further, the pipe is made of aluminum.

[0023] In a preferred implementation, it further includes a first filter and a second filter; the first filter is arranged between the connecting pipeline of the radiator and the first valve body, and the second filter is arranged between the connecting pipeline of the water pump and the second valve body.

[0024] In a preferred implementation, further, the water pump and the one-way valve form a group of power components, and the internal circulation heat dissipation system includes at least two groups of power components arranged in parallel.

[0025] In a preferred implementation manner, further, the detection element comprises one or a combination of more than two of a temperature sensor, a pressure sensor and a flow sensor.

[0026] The utility model discloses the beneficial effect is:

[0027] First, the heat dissipation system of the marine electrical module, through the independent partition layout of high heat dissipation subsystem and low heat dissipation subsystem, the electrical module of different heat dissipation demand can obtain accurate, efficient cooling, and the design of internal circulation heat dissipation system ensures the reliability and redundancy of system under different working conditions, the setting of three switching states makes the system can flexibly cope with the interruption of cooling liquid supply, radiator overload and the like, ensures the continuity and stability of heat dissipation, improves the working efficiency of electrical module and the overall reliability of heat dissipation system.

[0028] Second, in the preferred implementation manner, the utility model can increase the storage capacity of cooling liquid, balance the temperature fluctuation of cooling liquid by setting water tank in internal circulation heat dissipation system, further improve the stability and continuous cooling capacity of heat dissipation system, the introduction of water tank forms buffer area between each heat dissipation subsystem, helps maintaining the normal supply of cooling liquid under the condition of sudden increase of cooling liquid flow demand or temporary water supply interruption, reduces the overheating risk of electrical module caused by insufficient cooling liquid.

[0029] Third, in the preferred implementation manner, the utility model is configured with at least two groups of parallel power components for internal circulation heat dissipation system, each group of power components works redundantly, when one group of power components fails or needs maintenance, another group of power components can continue normal work, ensures the continuous operation of heat dissipation system, avoids the failure of entire heat dissipation system caused by single point fault, under different working conditions or load conditions, the system can flexibly enable one group or two groups of power components according to actual heat dissipation demand, realizes efficient cooling capacity.

[0030] Fourth, in the preferred implementation manner, the utility model provides double heat dissipation modes for the system in addition to water-cooled heat dissipation, the fan coil assembly is arranged on the pipe wall surface of the fan coil assembly, and the fan coil assembly is arranged on the pipe wall surface of the fan coil assembly.

[0031] Fifth, in the preferred implementation, the utility model discloses a first filter is installed at the water inlet of the first circulating water path pipeline, and a second filter is installed between the power mechanism and the second valve body connecting pipeline, can effectively filter the impurity in the coolant, prevent the impurity from blocking the pipeline.

[0032] Sixth, in the preferred implementation, the utility model discloses the temperature, pressure and flow sensor's detection can monitor the temperature, pressure and flow state of the coolant entering the electrical module in real time, so that enough heat dissipation capacity of the coolant can be ensured before entering the electrical module, and abnormal conditions are found in time. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the structure diagram of the heat dissipation system of the prior art marine electrical module;

[0034] Figure 2 It is the structure diagram of the heat dissipation system of the marine electrical module of the embodiment of the utility model;

[0035] Figure 3 It is the cooling liquid flow direction schematic diagram when the water supply of the embodiment of the utility model is normal;

[0036] Figure 4 It is the cooling liquid flow direction schematic diagram when the water supply of the embodiment of the utility model is insufficient;

[0037] Figure 5 It is the cooling liquid flow direction schematic diagram when the water supply of the embodiment of the utility model is interrupted.

[0038] Wherein, 1-first valve body;2-fan coil assembly;3-first filter;4-temperature sensor;5-pressure sensor;6-flow sensor;7-radiator;8-second valve body;9-second filter;10-one-way valve;11-water pump;12-water tank;A-electrical module;B-fan. DETAILED DESCRIPTION

[0039] In order to make the person skilled in the art better understand the technical scheme of the present application, the utility model will be further explained in detail in combination with the drawings and examples.

[0040] The up, down, left, right, front and back orientation terms in the present application file are established based on the positional relationship shown in the drawings. Different drawings may change the corresponding positional relationship, so it cannot be understood as a limitation on the protection scope.

[0041] In the present application, the terms "mounting", "connecting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, or it can be mechanically connected, or it can be electrically connected or can communicate with each other, or it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the connection between two components, or it can be the interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] The utility model discloses a kind of heat dissipation systems of marine electrical module, according to the heat dissipation demand and the characteristics of heat source of different electrical module, marine electrical module is divided into multiple heat dissipation zones. The electrical module of each heat dissipation zone is cooled by independent heat dissipation subsystem, to improve the reliability of system. By setting up inner circulation heat dissipation system and multiple independent heat dissipation subsystem parallelly connected, in combination with detection element and control system, the cooling liquid temperature, pressure and flow of electrical module are monitored in real time, ensure that the heat dissipation effect, when cooling demand increases or external water supply is interrupted, system automatically switches to inner circulation heat dissipation system work, realize system efficient heat dissipation and safe operation, while guarantee the reliability and continuity of cooling liquid circulation.

[0043] Example 1:

[0044] As described in the specification Figure 2, the heat dissipation system of the marine electrical module comprises a partitioned heat dissipation system, an internal circulation heat dissipation system and a control system. The marine electrical module is divided into a high heat dissipation demand group and a medium-low heat dissipation demand group according to the heat dissipation demand. The high heat dissipation demand group, such as a main propulsion motor, an APU and the like, needs a larger power heat dissipation subsystem for cooling. The medium-low heat dissipation demand group, such as a power distribution module and part auxiliary equipment module, a communication and navigation module, a control and monitoring module and the like, can adopt a medium heat dissipation power subsystem. Therefore, the partitioned heat dissipation system at least comprises two groups of heat dissipation subsystems, which are a high heat dissipation subsystem and a medium-low heat dissipation subsystem. The high heat dissipation subsystem and the medium-low heat dissipation subsystem have the same layout, and each comprises a first valve body 1, a radiator 7, a second valve body 8, a detection element and an electrical module A corresponding to each subsystem. The first valve body 1 has a first water inlet, a second water inlet and a water outlet. The second valve body 8 has a water inlet, a first water outlet and a second water outlet. The radiator 7 is connected with an external water supply device. The water outlet of the radiator 7 is connected with the first water inlet of the first valve body 1 through a pipeline. The water outlet of the first valve body 1 is connected with the water inlet of the electrical module A through a pipeline. The water outlet of the electrical module A is connected with the water inlet of the second valve body 8 through a pipeline. The first water outlet of the second valve body 8 is connected with the water inlet of the radiator 7 through a pipeline. The detection element is arranged on the connecting pipeline between the first valve body 1 and the electrical module A, and is used for detecting the temperature, pressure and flow of the cooling liquid flowing to the electrical module. The radiator 7, the first valve body 1, the electrical module A, the second valve body 8, the detection element and the related pipelines constitute a first circulating water circuit. The first circulating water circuits of the high heat dissipation subsystem and the medium-low heat dissipation subsystem are independently arranged.

[0045] The high heat dissipation subsystem and the medium-low heat dissipation subsystem select appropriate types and specifications of radiators according to the heat dissipation demands of different subsystems. The high heat dissipation subsystem can be configured with a larger power radiator to cope with the high heat flux density heat dissipation demand, while the medium-low heat dissipation subsystem can select a smaller power radiator with moderate heat dissipation capacity to save cost and space.

[0046] In addition, the radiators 7 of the high heat dissipation subsystem and the medium-low heat dissipation subsystem can be connected with the same external water supply device or different external water supply devices. Connection with the same external water supply device reduces the number of devices and the complexity of installation, facilitates unified control and management of the water supply and cooling system, simplifies the control strategy, reduces the difficulty of system fault troubleshooting, saves installation space and reduces the initial investment and maintenance cost of the system. Connection with different external water supply devices can avoid the high temperature heat generated by the high heat dissipation subsystem from being transmitted to the medium-low heat dissipation subsystem, reduce thermal interference, improve system redundancy, and other systems can still work normally when a certain water supply device fails.

[0047] The high heat dissipation subsystem and the low heat dissipation subsystem further comprise a water pump, which is arranged at a proper position according to the flow direction of the cooling liquid of each heat dissipation subsystem. In the embodiment, the water pump of each heat dissipation subsystem is arranged between the radiator 7 and the connecting pipeline of the first valve body 1.

[0048] The inner circulation heat dissipation system is arranged in parallel with the high heat dissipation subsystem and the low heat dissipation subsystem. The inner circulation heat dissipation system comprises a one-way valve 10 and a water pump 11. The one-way valve 10 is used to prevent the backflow of the cooling liquid. The outlet of the one-way valve 10 is connected with the second inlet of the first valve body 1 of the high heat dissipation subsystem and the low heat dissipation subsystem through a pipeline, respectively. The inlet of the one-way valve 10 is connected with the outlet of the water pump 11 through a pipeline. The outlet of the water pump 11 is connected with the second outlet of the second valve body 8 of the high heat dissipation subsystem and the low heat dissipation subsystem through a pipeline, respectively. The first valve body 1, the detection element, the electrical module, the second valve body 8, the water pump 11 and the one-way valve 10 of the two heat dissipation subsystems constitute a second circulation water circuit. The water pump 11 is used to drive the cooling liquid in the second circulation water circuit to flow to the electrical module A.

[0049] Preferably, the first valve body 1 and the second valve body 8 are electronic three-way valves, and the water pump 11 is an electronic water pump.

[0050] The first valve body 1, the second valve body 8, the detection element, the water pump 11 and the one-way valve 10 are connected with a control system through signal lines, respectively. The control system is used to control the switching of the first valve body 1 and the second valve body 8 based on the cooling liquid temperature, pressure and flow signals measured by the detection element.

[0051] Further, the high heat dissipation subsystem and the low heat dissipation subsystem further comprise a fan coil assembly 2. Taking the high heat dissipation subsystem as an example, the fan coil assembly 2 is arranged between the connecting pipeline of the first valve body 1 and the electrical module A, and is used to assist the heat dissipation of the first circulation water circuit and the second circulation water circuit. The fan coil assembly 2 comprises a fan and a pipeline. The pipeline of the fan coil assembly 2 is connected with the inlet of the electrical module A and the outlet of the first valve body 1 at two ends, respectively. The fan of the fan coil assembly 2 is distributed around the pipeline of the fan coil assembly 2, and is used to blow air to the outer surface of the pipeline to dissipate heat.

[0052] Preferably, the pipeline of the fan coil assembly 2 is in an S-shaped structure. The pipeline is made of thin-walled aluminum pipe. The adjacent wall surfaces of the pipeline are connected through fins. The fins are used to take out the heat inside the pipeline, thereby improving the heat exchange efficiency.

[0053] The first valve body 1 and the second valve body 8 have three switching states:

[0054] As shown in the accompanying drawings, Figure 3 , Figure 3The dotted arrow in the figure indicates the flow direction of the cooling liquid. In the first switching state, the heat dissipation system is normally cooled, and the high heat dissipation subsystem and the medium-low heat dissipation subsystem are independently cooled by the external water supply device. At this time, the first water inlet of the first valve body 1 is in communication with the radiator 7, the second water inlet of the first valve body 1 is closed, the water outlet of the first valve body 1 is in communication with the electrical module, the water inlet of the second valve body 8 is in communication with the electrical module, the first water outlet of the second valve body 8 is in communication with the radiator 7, and the second water outlet of the second valve body 8 is closed. The low-temperature cooling liquid enters the heat dissipation subsystem from the radiator 7, and the heat inside the electrical module A is taken out through the water channel in the first valve body 1, the fan coil assembly 2 and the electrical module A, at this time the low-temperature cooling liquid becomes high-temperature cooling liquid, and the high-temperature cooling liquid flows into the radiator 7 after passing through the second valve body 8. The cooling liquid after being cooled by the radiator 7 continues to circulate and cool.

[0055] As shown in the accompanying drawings Figure 4 , Figure 4 The dotted arrow in the figure indicates the flow direction of the cooling liquid. In the second switching state, when the heat dissipation capacity of the radiator 7 is insufficient, the internal circulation heat dissipation system and the high heat dissipation subsystem and the medium-low heat dissipation subsystem jointly cool. At this time, the first water inlet of the first valve body 1 is in communication with the radiator 7, the second water inlets of the first valve bodies 1 of the high heat dissipation subsystem and the medium-low heat dissipation subsystem are simultaneously in communication with the water outlet of the one-way valve 10, the water outlet of the first valve body 1 is in communication with the electrical module, the water inlet of the second valve body 8 is in communication with the electrical module, the first water outlet of the second valve body 8 is in communication with the radiator 7, and the second water outlets of the second valve bodies 8 of the high heat dissipation subsystem and the medium-low heat dissipation subsystem are simultaneously in communication with the water inlet of the water pump 11. In this embodiment, the fan coil assembly 2 is arranged between the connecting pipeline of the first valve body 1 and the electrical module A, and the fan of the fan coil assembly 2 can be started at the same time. The cooling liquid enters the fan coil assembly 2 after entering the second circulating water pipeline and the driving mechanism, and is directly blown by the fan of the fan coil assembly 2 to the pipeline of the fan coil assembly 2 for concentrated heat dissipation. The low-temperature cooling liquid after being cooled enters the multiple electrical modules A, realizing the cooperative cooling of the first heat dissipation system and the internal circulation heat dissipation system.

[0056] As shown in the accompanying drawings Figure 5 , Figure 5The dashed arrow in the figure indicates the flow direction of the cooling liquid. In the third switching state, the first water inlet of the first valve body 1 and the first water outlet of the second valve body 8 are closed, the second water inlet of the first valve body 1 of the high heat dissipation subsystem and the medium and low heat dissipation subsystem is in communication with the water outlet of the one-way valve 10 at the same time, the water outlet of the first valve body 1 and the water inlet of the second valve body 8 are in communication with the electrical module respectively, and the second water outlet of the second valve body 8 of the high heat dissipation subsystem and the medium and low heat dissipation subsystem is in communication with the water inlet of the water pump 11 at the same time. Only the second circulating water circuit works, and the remaining cooling liquid in the heat dissipation system is used to dissipate heat for the electrical module A. The cooling liquid passes through the water pump 11, the first valve body 1, the fan coil assembly 2, each electrical module A and the second valve body 8, and then returns to the water pump 11. The fan of the fan coil assembly 2 is turned on to dissipate heat for the cooling liquid passing through the pipeline of the fan coil assembly 2. The heat is discharged into the air through air heat exchange, the high-temperature cooling liquid becomes low-temperature cooling liquid, and the circulation is repeated.

[0057] With this structure of the embodiment, the first circulating water circuit and the second circulating water circuit can work redundantly to dissipate heat for the electrical module A when normal water supply; in the water interruption condition, the remaining cooling liquid in the redundant heat dissipation system is used to dissipate heat for the electrical module A. The cooling liquid flows through the internal waterway of the multiple electrical modules A to take away heat, and then circulates to the fan coil assembly 2 to dissipate heat for the cooling liquid flowing through the fan coil assembly 2 through the fan. Compared with the existing structure in which at least one fan is installed outside each electrical module A, and the fan directly dissipates heat for the surface of the electrical module A, the heat exchange efficiency is improved, the structure is more compact, the arrangement of the multiple electrical modules A is limited due to the occupation of too much installation space by the fins and the fan installed on each electrical module A is reduced, the corresponding air duct arrangement space is reduced, the equipment space is saved, the heat dissipation design of the module is simplified, no additional heat dissipation fins are needed, the equipment volume is small, the power of the electrical module A during derating operation is improved, the system can operate at 20% of the rated power, the operating power is increased by 2-4 times, and the redundancy and stability of the heat dissipation system are improved.

[0058] Embodiment 2:

[0059] On the basis of embodiment 1, the inner circulation heat dissipation system further comprises a water tank 12. The water tank 12 is arranged between the connecting pipeline of the second valve body 8 of the high heat dissipation subsystem and the low heat dissipation subsystem and the water pump 11, the second water outlet of the second valve body 8 of the high heat dissipation subsystem and the low heat dissipation subsystem is connected with the water inlet of the water tank 12, and the water outlet of the water tank 12 is connected with the water inlet of the water pump 11. Compared with the condition of relying on the cooling liquid remaining in the pipeline heat dissipation system to dissipate heat for the electrical module A, the arrangement of the water tank 12 in this embodiment can continue to support the cooling circulation in the case of insufficient water supply or water cut-off, also plays a buffering role, maintains the water pressure stability in the cooling system, effectively prolongs the heat dissipation time, balances the water pressure in the system, reduces the water pressure fluctuation caused by water cut-off, reduces the impact on the pipeline, the waterway of the electrical module and other components, and improves the system stability.

[0060] In an implementation manner of this embodiment, a radiator can also be arranged between the connecting pipeline of the second valve body 8 of the high heat dissipation subsystem and the low heat dissipation subsystem and the water tank 12, so that the cooling liquid is preliminarily cooled before flowing into the water tank, the heat dissipation pressure of the water tank is reduced, and the cooling effect and stability of the entire heat dissipation system are enhanced.

[0061] Embodiment 3:

[0062] On the basis of embodiment 1, the water pump 11 and the check valve 10 form a power assembly, the inner circulation heat dissipation system comprises at least two power assemblies connected in parallel, and the two power assemblies work redundantly. When one of the power assemblies fails, the other power assembly is started to work.

[0063] With this structure of this embodiment, at least two power assemblies work redundantly. When one of the power assemblies fails or needs to be maintained, the other power assembly can continue to work normally, ensures the continuous operation of the heat dissipation system, avoids the failure of the entire heat dissipation system caused by a single point failure, and under different working conditions or load conditions, one or two power assemblies can be flexibly started according to the actual heat dissipation demand, so that higher cooling capacity is achieved. For example, greater cooling water flow and heat dissipation capacity are provided under high temperature or high load conditions, and the two power assemblies can work simultaneously.

[0064] Embodiment 4:

[0065] This embodiment adopts all the structures of embodiment 3, and a detection element is arranged between the connecting pipeline of the first valve body 1 and the fan coil assembly 2, a first filter 3 is arranged on the connecting pipeline of the radiator 7 and the first valve body 1, and a second filter 9 is arranged between the connecting pipeline of the second valve body 8 and the power assembly.

[0066] The detection element comprises at least one of a temperature sensor 4, a pressure sensor 5 and a flow sensor 6, or a combination of two or more thereof. The temperature sensor 4, the pressure sensor 5 and the flow sensor 6 are connected to the control system to detect the temperature, pressure and flow in the pipeline in real time when the second circulating water circuit is in operation. The fan of the fan coil assembly 2 and the power assembly are connected to the control system. The control system is preset with threshold values of the temperature, pressure and flow. The detection element inputs the signals collected to the control system, and the control system controls the fan of the fan coil assembly 2, the power assembly, the first valve body 1 and the second valve body 8 based on the signals of the detection element.

[0067] When the water supply is interrupted, the flow sensor 6 detects that the flow of the cooling liquid is less than the preset flow threshold value, and the flow sensor 6 sends an alarm. The control system controls the first valve body 1 and the second valve body 8 to be disconnected from the related sub-radiating system. The pressure sensor 5 detects the pressure of the cooling liquid, and the control system controls the power assembly to provide power to drive the cooling liquid to flow through the fan coil assembly 2 and the electrical module A. The temperature sensor 4 detects the temperature of the cooling liquid, and the control system controls the rotation speed of the fan in the fan coil assembly 2 to cool the cooling liquid flowing through the fan coil assembly 2.

[0068] With the structure of the embodiment, the detection element is arranged between the connecting pipeline of the first valve body 1 and the fan coil assembly 2, so that the precise control of the heat dissipation of the second circulating water circuit can be realized, and the heat exchange efficiency can be improved. The first filter 3 is installed at the water inlet of the first circulating water circuit, and the second filter 9 is installed between the connecting pipeline of the power assembly and the second valve body 8, so that the impurities in the cooling liquid can be effectively filtered, and the first valve body 1 and the second valve body 8 can be prevented from being blocked by the impurities.

[0069] The first valve body 1, the temperature sensor 4, the pressure sensor 5, the flow sensor 6, the fan of the fan coil assembly 2, the second valve body 8 and the water pump 11 of the heat dissipation system of the marine electrical module are connected to the control system through signal lines. The electrical module A has a temperature detection element, and the temperature detection element of the electrical module A is connected to the control system through signal lines.

[0070] In combination with the structures of embodiments 1-4, the working principle of the heat dissipation system of the marine electrical module of the embodiment is as follows:

[0071] The first circulating water circuit state: when the external water supply is normal, the system is in an external circulation state, the radiators of each sub-cooling system are connected with the external water supply equipment, and the internal circulation cooling system is in a closed state. The temperature detection element of the electrical module and the temperature, pressure and flow sensors of the cooling liquid transmit relevant data to the control system. Based on the temperature and flow data, the control system adjusts the opening degree of the first valve body and the second valve body of each sub-cooling system to ensure that the electrical module is kept within the normal working temperature range. If the temperature of the electrical module and the temperature of the cooling liquid in each sub-cooling system are within the set threshold range, the normal operation of each sub-cooling system is maintained, the internal circulation cooling system is closed, and the fan of the fan coil assembly is also kept in a closed state. If the temperature of the electrical module and the cooling liquid is lower than the threshold value by 5%, the control system will reduce the valve opening to reduce the flow rate of the cooling liquid, increase the system pressure, and monitor whether the temperature returns to the normal range. If the temperature exceeds the threshold value by 5%, the control system increases the valve opening to increase the flow rate of the cooling liquid and reduce the system pressure to maintain the cooling efficiency.

[0072] The first circulating water circuit and the second circulating water circuit work together: if the first circulating water circuit is insufficiently cooled, and the opening degree of the first valve body and the second valve body has been opened to the maximum, but the temperature still exceeds the normal range by 5%, the control system controls the first valve body and the second valve body to communicate with the internal circulation cooling system. The first circulating water circuit and the second circulating water circuit work together, the fan of the fan coil assembly and the water pump are started at the same time, and the cooling efficiency is improved. The system continuously adjusts the speed of the fan, the water pump and the valve opening to ensure that the temperature returns to the normal range. When the temperature returns to the normal range, the control system maintains the current valve opening and the running state of the fan coil assembly. If the temperature continues to decrease and is lower than the minimum value by 5%, the control system will reduce the opening degree of the related valve and the speed of the fan and the water pump to increase the system pressure and adjust the temperature back to the working range. If the temperature rises again by more than 5% of the threshold value, the control system increases the opening degree of the related valve, the speed of the fan and the water pump to ensure that the flow rate of the cooling liquid increases and the temperature decreases rapidly.

[0073] The second circulating water circuit working state when the external water supply is interrupted: the control system controls the first valve body and the second valve body to disconnect with the radiator, and starts the second circulating water circuit system. The second circulating water circuit is provided with a water tank, and the water pump and the fan coil assembly work together to keep the temperature of the cooling liquid within a reasonable range through air cooling. The control system adjusts the opening degree of the related valve, the speed of the fan and the water pump in real time according to the temperature. If the valve opening degree and the fan and water pump of the fan coil assembly have reached the maximum running state, but the temperature of the electrical module still exceeds the threshold value by 5%, the system will trigger an emergency shutdown to protect the electrical module from damage.

[0074] The marine electrical module heat dissipation system efficiently meets the heat dissipation requirements of different electrical modules through independent partition layout, the design of three switching states improves the flexibility of the system in response to the interruption of cooling liquid and the overload of the radiator and the like, and ensures the continuity and stability of heat dissipation. Meanwhile, through the setting of the water tank and the configuration of the parallel redundant power components, the cooling liquid storage capacity and the reliability of the system are increased, and the continuous cooling capacity is provided when the cooling liquid is insufficient or the equipment fails. The double heat dissipation means of air cooling and water cooling improves the heat dissipation efficiency and reduces the space occupied by the fan. The introduction of the filter and the real-time monitoring of the sensor further ensure the safety and stability of the cooling system.

[0075] The above is only the embodiment of the application, and the common knowledge of specific structures and characteristics in the scheme is not described too much. It is obvious for those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the application can be realized in other specific forms without departing from the spirit or basic characteristics of the application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A heat dissipation system for a marine electrical module, characterized in that: include: A partitioned heat dissipation system, the partitioned heat dissipation system at least comprising a high heat dissipation subsystem and a medium-low heat dissipation subsystem, the high heat dissipation subsystem and the medium-low heat dissipation subsystem being independently arranged and both comprising a first valve body (1), a radiator (7), a second valve body (8), a detection element, a pipeline, and an electrical module corresponding to each heat dissipation subsystem; the radiator (7) is sequentially connected to the first valve body (1), the electrical module and the second valve body (8) via a pipeline, the first valve body (1) having a first water inlet, a second water inlet and a water outlet, and the second valve body (8) having a water inlet, a first water outlet and a second water outlet; An internal circulation heat dissipation system is arranged in parallel with the high heat dissipation subsystem and the medium and low heat dissipation subsystem, and comprises a one-way valve (10) and a water pump (11), the water outlet of the one-way valve (10) is connected to the second water inlet of the first valve body (1) of the high heat dissipation subsystem and the medium and low heat dissipation subsystem through a pipeline, and the water inlet of the water pump (11) is connected to the second water outlet of the second valve body (8) of the high heat dissipation subsystem and the medium and low heat dissipation subsystem through a pipeline; A control system, the control system being connected to the first valve body (1), the second valve body (8), the detection element, and the water pump (11) by signal, the control system being used to control switching of the first valve body (1) and the second valve body (8) based on coolant temperature, pressure, and flow signals measured by the detection element; The first valve body (1) and the second valve body (8) have three switching states: in the first switching state, the first water inlet of the first valve body (1) is connected to the radiator (7), the second water inlet of the first valve body (1) is closed, the water outlet of the first valve body (1) is connected to the electrical module, the water inlet of the second valve body (8) is connected to the electrical module, the first water outlet of the second valve body (8) is connected to the radiator (7), and the second water outlet of the second valve body (8) is closed; In the second switching state, the first water inlet of the first valve body (1) is communicated with the radiator (7), the second water inlet of the first valve body (1) of the high heat dissipation subsystem and the medium and low heat dissipation subsystem is communicated with the water outlet of the one-way valve (10) at the same time, the water outlet of the first valve body (1) is communicated with the electrical module, the water inlet of the second valve body (8) is communicated with the electrical module, the first water outlet of the second valve body (8) of the high heat dissipation subsystem and the medium and low heat dissipation subsystem is communicated with the radiator (7) at the same time, and the second water outlet of the second valve body (8) is communicated with the water inlet of the water pump (11); In the third switching state, the first water inlet of the first valve body (1) and the first water outlet of the second valve body (8) are closed, the second water inlets of the first valve bodies (1) of the high heat dissipation subsystem and the medium and low heat dissipation subsystem are simultaneously connected to the water outlet of the one-way valve (10), the water outlet of the first valve body (1) and the water inlet of the second valve body (8) are respectively connected to the electrical module, and the second water outlets of the second valve bodies (8) of the high heat dissipation subsystem and the medium and low heat dissipation subsystem are simultaneously connected to the water inlet of the water pump (11).

2. The heat dissipation system of a marine electrical module according to claim 1, characterized in that: The internal circulation heat dissipation system further comprises a water tank (12); the water tank (12) is arranged between the connecting pipelines of the high heat dissipation subsystem and the second valve body (8) of the medium and low heat dissipation subsystem and the water pump (11).

3. The heat dissipation system of a marine electrical module according to claim 1, characterized in that: The high heat dissipation subsystem and the medium and low heat dissipation subsystem further include a fan coil assembly (2); the fan coil assembly (2) is arranged between the first valve body (1) and the connecting pipeline of the electrical module.

4. The heat dissipation system of a marine electrical module according to claim 3, characterized in that: The fan coil unit assembly (2) comprises a pipeline and a fan; the fan is arranged on the periphery of the pipeline.

5. The heat dissipation system of a marine electrical module according to claim 4, characterized in that: The pipelines are distributed in an S-shaped structure.

6. The heat dissipation system of a marine electrical module according to claim 5, characterized in that: Adjacent walls of the pipes are connected via fins.

7. The heat dissipation system of a marine electrical module according to claim 4, characterized in that: The pipe is made of aluminum.

8. The heat dissipation system of a marine electrical module according to claim 1, characterized in that: It also includes a first filter (3) and a second filter (9); the first filter (3) is arranged between the connecting pipeline of the radiator (7) and the first valve body (1), and the second filter (9) is arranged between the connecting pipeline of the water pump (11) and the second valve body (8).

9. The heat dissipation system of a marine electrical module according to claim 1, characterized in that: The water pump (11) and the one-way valve (10) form a group of power components, and the internal circulation heat dissipation system includes at least two groups of power components arranged in parallel.

10. The heat dissipation system of a marine electrical module according to claim 1, characterized in that: The detection element includes one or a combination of two or more of a temperature sensor (4), a pressure sensor (5) and a flow sensor (6).

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