High-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation and working method

Abstract

The invention provides a high-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation and a working method, and the structure comprises a vacuum arc-extinguishing chamber heat dissipation device, a liquid metal diversion pipeline, and a liquid metal cooling circulation system. The vacuum arc-extinguishing chamber heat dissipation devices are arranged on the two sides of the vacuum arc-extinguishing chamber; the end part of the liquid metal flow guide pipeline is communicated with a liquid metal cooling circulation system; the vacuum arc-extinguishing chamber heat dissipation device is internally provided with heat dissipation fins; and the liquid metal flow guide pipeline is embedded in the radiating fins. The overall heat dissipation capability of the circuit breaker is improved by introducing the liquid metal, the heat dissipation structure of the vacuum arc-extinguishing chamber timely exports heat generated by the vacuum arc-extinguishing chamber, the heat is finally exported to the outside of the circuit breaker through circular flow of the liquid metal, the steady-state temperature rise during operation of the circuit breaker can be effectively reduced, and the service life of the circuit breaker is prolonged. The method is of great significance in improving the capacity of the generator circuit breaker and ensuring safe and reliable operation of the circuit breaker.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breaker heat dissipation, and relates to a heat dissipation structure and a working method of a large-capacity generator circuit breaker based on liquid metal heat dissipation. Background Art

[0002] With the rapid development of the power system and the continuous growth of energy demand, the capacity of the power grid is increasing, and the requirements for generator sets are getting higher and higher. Large-capacity generator sets have become an effective solution to the growing power demand and power grid load, and the continuous increase in the capacity of generator sets has become the current development status of the industry. The increasing capacity of generators will cause huge short-circuit currents, and generator circuit breakers need to be installed separately to ensure the safe and reliable operation of generator sets and power systems. Compared with ordinary circuit breakers, generator circuit breakers can efficiently interrupt short-circuit faults on the generator side and system source, improve the flexibility of power use in power plants, and reduce the scope of generator set failures.

[0003] Generator circuit breakers have a very high rated through-current, so there is a serious temperature rise problem during steady-state operation. High temperature environment accelerates equipment aging, causes insulation failure, reduces breaking performance, and seriously affects the normal operation of generator circuit breakers. Solving the problem of temperature rise of generator circuit breakers under large through-current conditions and proposing an optimized heat dissipation solution are the core issues that need to be urgently solved for large-capacity generator circuit breakers. For generator circuit breakers, the mainstream design solution is SF6 circuit breakers. However, SF6 is a very strong greenhouse gas. Under the dual carbon goals of carbon peak and carbon neutrality, the use of SF6 circuit breakers must be restricted. Vacuum circuit breakers use vacuum arc extinguishing as the arc path. Compared with SF6 circuit breakers, they have the advantages of environmental protection, low cost, high breaking times, and long life. However, they also have large contact resistance, resulting in serious heat generation and temperature rise. Therefore, how to efficiently manage heat and reduce the temperature rise of circuit breakers has become an important technical issue in the design of generator circuit breakers. However, with the continuous increase in generator capacity, conventional circuit breaker settings have been difficult to meet the heat dissipation requirements. Summary of the invention

[0004] In response to the problems existing in the prior art, the present invention provides a large-capacity generator circuit breaker heat dissipation structure and working method based on liquid metal heat dissipation. The heat dissipation of the large-capacity circuit breaker provides an efficient, reliable and environmentally friendly solution, which can significantly improve the operating performance and service life of the equipment and has extremely high industry application value.

[0005] The present invention is achieved through the following technical solutions: A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation, comprising a vacuum interrupter heat dissipation device, a liquid metal guide pipe and a liquid metal cooling circulation system; The liquid metal cooling circulation system is arranged outside the circuit breaker; the vacuum interrupter heat sink is arranged on both sides of the moving and static ends of the vacuum interrupter; the liquid metal guide pipe is embedded in the vacuum interrupter heat sink, and the end of the liquid metal guide pipe is connected to the liquid metal cooling circulation system; the vacuum interrupter heat sink is provided with heat sink fins; the liquid metal guide pipe is embedded in the heat sink fins.

[0006] Preferably, the heat dissipation device of the vacuum arc chamber comprises a dynamic end heat dissipation device and a static end heat dissipation device, the dynamic end heat dissipation device is arranged on the dynamic end side of the vacuum arc chamber, and the static end heat dissipation device is arranged on the static end side of the vacuum arc chamber.

[0007] Preferably, the moving end heat dissipation device includes a conductive structure and a plurality of moving end heat dissipation fins, wherein the conductive structure is arranged inside the moving end heat dissipation device and is connected to a power supply; the moving end heat dissipation fins are arranged outside the moving end heat dissipation device to increase the convection radiation area with the outside to increase heat dissipation; and the liquid metal guide pipe is embedded in the moving end heat dissipation fins.

[0008] Preferably, the static end heat dissipation device includes a conductive structure and a plurality of static end heat dissipation fins, wherein the conductive structure is arranged inside the static end heat dissipation device and is connected to a power supply; the static end heat dissipation fins are arranged outside the static end heat dissipation device to increase the convection radiation area with the outside to increase heat dissipation; and the liquid metal guide pipe is embedded in the static end heat dissipation fins.

[0009] Preferably, the heat dissipation fins at the moving end are elliptical in shape, and the fins of each layer are evenly spaced; the heat dissipation fins at the stationary end are elliptical in shape, and the fins of each layer are evenly spaced, and the sizes of the heat dissipation fins at the stationary end are staggered.

[0010] Preferably, the plane where the moving-end heat dissipation fins and the static-end heat dissipation fins are located is perpendicular to the flow direction of the vacuum interrupter.

[0011] Preferably, grooves are provided on the moving end heat sink fins and the static end heat sink fins, and the liquid metal guide pipe is spirally embedded in the grooves of the moving end heat sink fins and the static end heat sink fins, and is nested in the moving end heat sink fins and the static end heat sink fins in multiple circles.

[0012] Preferably, the liquid metal cooling circulation system includes a liquid metal storage tank, an electromagnetic pump and an external heat dissipation device; the output end of the liquid metal storage tank is connected to the liquid metal diversion pipeline; the electromagnetic pump is arranged on the connecting pipeline between the liquid metal storage tank and the liquid metal diversion pipeline; the input end of the liquid metal storage tank is connected to the external heat dissipation device.

[0013] Preferably, the vacuum interrupter, the moving end heat sink and the static end heat sink are arranged inside the circuit breaker, and the liquid metal cooling circulation system is arranged outside the circuit breaker.

[0014] A working method of a heat dissipation structure of a large-capacity generator circuit breaker based on liquid metal heat dissipation comprises: liquid metal flows out of the liquid metal cooling circulation system, is accelerated by an electromagnetic pump of the liquid metal cooling circulation system, flows through a moving end heat dissipation device and a static end heat dissipation device of a vacuum interrupter heat dissipation device, takes away heat in the heat dissipation fins by heat conduction when flowing through a liquid metal guide pipe, and the temperature of the cooled liquid metal increases due to the absorption of heat. After flowing out of the heat dissipation fins, the high-temperature liquid metal is cooled by an external heat dissipation device in the liquid metal cooling circulation system, and then the cooled liquid metal flows back to a liquid metal storage tank of the liquid metal cooling circulation system.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention provides a large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation, including a vacuum arc chamber heat dissipation device, a liquid metal guide pipe and a liquid metal cooling circulation system. The vacuum arc chamber heat dissipation device is provided with heat dissipation fins, which can effectively improve the heat dissipation capacity of the generator circuit breaker. The heat of the vacuum arc chamber, the core part of the circuit breaker, is effectively extracted through the heat dissipation fins. The cooled liquid metal flows through the heat dissipation fins through the guide channel, so that the heat dissipation fins and the liquid metal are fully heat exchanged. The present invention increases the overall heat dissipation capacity of the circuit breaker by introducing liquid metal. The vacuum arc chamber heat dissipation structure extracts the heat generated by the vacuum arc chamber in time, and finally extracts the heat to the outside of the circuit breaker through the circulation flow of liquid metal, which can effectively reduce the steady-state temperature rise of the circuit breaker. It is of great significance to increase the capacity of the generator circuit breaker and ensure the safe and reliable operation of the circuit breaker; it can effectively reduce the temperature rise of the circuit breaker without affecting the internal structure of the circuit breaker and the breaking capacity of the circuit breaker. More importantly, the present invention uses liquid metal that can be recycled through the circulation system. The circulation system is easy to control and can be flexibly adjusted dynamically according to the temperature rise. In addition, the present invention has low construction difficulty, low material consumption, and no requirements on the external environment, and can achieve its functions in a variety of environments.

[0016] Furthermore, the liquid metal guide pipes are embedded in a spiral shape and nested in multiple circles in the heat sink, which can increase the coverage area of ​​the guide channel in the heat sink, increase the travel of the liquid metal in the heat sink, and at the same time increase the contact time between the heat sink and the liquid metal, thereby enhancing the heat exchange between the heat sink and the liquid metal.

[0017] Furthermore, the external heat dissipation structure is used to cool the outflowing high-temperature liquid metal, so that the liquid flowing back to the liquid metal storage tank can be kept at a low temperature, so that the liquid metal flowing out of the liquid metal storage tank afterwards is also in a cooled state.

[0018] Furthermore, in the liquid metal circulation system, the flow rate of the liquid metal can be controlled by adjusting the power of the electromagnetic pump, so that the heat dissipation structure can flexibly respond to different temperature rise conditions and adapt to different working conditions to achieve the purpose of heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the structural diagram of the heat dissipation device of the vacuum interrupter; Figure 2 This is the structural diagram of the heat dissipation device at the moving end; Figure 3 It is the structural diagram of the heat dissipation device of the vacuum interrupter chamber, the liquid metal guide pipe and the liquid metal cooling circulation system; Figure 4 It is a schematic diagram of the liquid metal flow guide pipeline at the moving end; Figure 5 This is a schematic diagram of the liquid metal flow guide pipeline at the static end; In the figure: vacuum interrupter 1, moving end heat sink 2, static end heat sink 3, liquid metal guide pipe 4, groove 5, liquid metal storage tank 6, electromagnetic pump 7, external heat sink 8. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] In order to effectively solve the problem of temperature rise caused by severe heating under large current of generator circuit breaker, the present invention proposes an efficient heat dissipation structure for large-capacity generator circuit breaker, which can significantly increase the heat dissipation capacity of the circuit breaker and effectively reduce the temperature rise of the circuit breaker. Its core is based on the high thermal conductivity of liquid metal and its efficient heat transfer in the heat dissipation circulation system. As a cooling medium with extremely high thermal conductivity, liquid metal has a thermal conductivity far superior to traditional cooling media such as air or water. It can quickly transfer heat from high-temperature areas to external cooling devices to prevent heat from accumulating inside the circuit breaker. The core structure of the present invention includes a heat dissipation device 2 at the moving end of the vacuum arc chamber, a heat dissipation device 3 at the static end, a liquid metal guide pipe 4, a liquid metal storage tank 6, an electromagnetic pump 7 and an external heat dissipation device 8, and these components together constitute an efficient liquid metal circulation heat dissipation system. Liquid metal is used to form a heat dissipation channel to transfer the heat generated during the flow of the vacuum arc chamber to the outside of the circuit breaker, effectively reducing the temperature rise of the circuit breaker.

[0023] In order to achieve the above object, the present invention discloses a heat dissipation structure of a large-capacity generator circuit breaker, such as Figure 3 As shown, it includes: a circuit breaker vacuum interrupter 1, a vacuum interrupter moving end heat sink 2, a static end heat sink 3, a liquid metal guide pipe 4, a liquid metal storage tank 6, an electromagnetic pump 7, an external heat sink 8, etc.; wherein, the vacuum interrupter moving end heat sink 2 and the static end heat sink 3 are respectively located on both sides of the moving end and the static end of the vacuum interrupter, wherein the heat sink fins are an elliptical structure with staggered sizes, and the liquid metal guide pipe 4 is embedded in the heat sink fins; the liquid metal storage tank 6, the electromagnetic pump 7 and the external heat sink 8 constitute a liquid metal heat dissipation circulation system outside the circuit breaker.

[0024] Preferably, Figure 1 As shown, heat dissipation devices are distributed on both sides of the vacuum arc extinguishing chamber, which are divided into a dynamic end heat dissipation device 2 and a static end heat dissipation device 3.

[0025] Preferably, Figure 2 As shown, the moving end heat sink 2 is composed of a central conductive structure and a plurality of moving end heat sink fins on the outside. The heat sink fins are elliptical, and each layer of fins is equidistantly distributed.

[0026] One side of the conductive structure is connected to the internal conductive structure of the vacuum arc extinguishing chamber, that is, the movable conductive rod, and the other side is determined according to the specific structure of the circuit breaker, such as being connected to the conductive cylinder through a flange, etc. The present invention is an integrated molding, consisting of heat dissipation fins and a middle conductive structure. In addition to the heat dissipation fins, the middle pure copper flow-through part is the middle conductive structure.

[0027] Preferably, the static end heat sink 3 is composed of a central conductive structure and a plurality of static end heat sink fins on the outside. The heat sink fins are elliptical, and each layer of fins is equidistantly distributed and staggered in size. The size of the heat sink fins is determined according to the actual size of the circuit breaker, that is, considering factors such as the heat sink space and arc extinguishing chamber size of the circuit breaker; One side of the conductive structure is connected to the internal conductive structure of the vacuum arc extinguishing chamber, that is, the static conductive block, and the other side is determined according to the specific structure of the circuit breaker, such as being connected to the conductive cylinder through a flange, etc. The present invention is an integrated molding, consisting of heat dissipation fins and a middle conductive structure. In addition to the heat dissipation fins, the middle pure copper flow-through part is the middle conductive structure.

[0028] Preferably, the heat dissipation fins of the moving end heat dissipation device are a racetrack-shaped thin-walled structure with uniform size, and the liquid metal guide pipe is embedded in the moving end heat dissipation fin. The liquid metal guide pipe 4 is embedded on each layer of heat dissipation fins. The heat dissipation fins of the static end heat dissipation device are a racetrack-shaped thin-walled structure with staggered size, and the liquid metal guide pipe is embedded in the static end heat dissipation fin.

[0029] Preferably, the liquid metal guide pipes 4 are embedded in a spiral shape and nested in multiple circles in the heat sink to cover the surface of the heat sink fins, which can increase the coverage area of ​​the guide channel in the heat sink, increase the travel of the liquid metal in the heat sink, and at the same time increase the contact time between the heat sink and the liquid metal, thereby enhancing the heat exchange between the heat sink and the liquid metal.

[0030] Preferably, the liquid metal circulation system is outside the circuit breaker, and includes a liquid metal storage tank 6, an electromagnetic pump 7, an external heat sink 8, etc. In the liquid metal cooling circulation system, the liquid metal storage tank 6 is connected to the electromagnetic pump 7, and the electromagnetic pump 7 provides power to make the liquid metal flow to the external heat sink 8 through the heat dissipation fin guide channel to complete the heat transfer and dissipation, and the liquid metal finally flows into the liquid metal storage tank 6 to complete the cooling cycle.

[0031] Preferably, the liquid metal storage tank 6, the electromagnetic pump 7, the guide pipe inside the heat dissipation fin, and the external heat dissipation device 8 are connected in sequence to form a liquid metal circulation.

[0032] Preferably, in the liquid metal circulation system, liquid metal flows out from the liquid metal storage tank 6, is accelerated by the electromagnetic pump 7, and flows through the heat sink fins. When passing through the spiral guide pipe in the heat sink, the heat in the heat sink is taken away by heat conduction. At the same time, the temperature of the cooled liquid metal increases due to the absorption of heat. After flowing out of the heat sink, the heat dissipation device cools the high-temperature liquid metal, and then the cooled liquid metal flows back to the liquid metal storage tank 6.

[0033] Preferably, the equidistant elliptical heat dissipation fins can increase the contact area between the main body of the vacuum interrupter of the circuit breaker and the external air, thereby enhancing heat conduction and achieving the purpose of enhancing heat dissipation.

[0034] Preferably, in the liquid metal circulation system, the flow rate of the liquid metal can be changed by adjusting the electromagnetic pump 7, so that the heat dissipation structure can flexibly respond to different temperature rise conditions and adapt to different working conditions to achieve the purpose of heat dissipation.

[0035] Preferably, the external heat dissipation structure is used to cool the outflowing high-temperature liquid metal, so that the liquid flowing back to the liquid metal storage tank 6 can be kept at a low temperature, so that the liquid metal flowing out of the liquid metal storage tank 6 afterwards is also in a cooled state.

[0036] Example 1 The specific working principle of the heat dissipation structure of the large-capacity generator circuit breaker based on liquid metal heat dissipation is as follows: the vacuum arc chamber of the large-capacity generator circuit breaker generates a large amount of heat during operation due to the large current flowing through it. A heat dissipation device is installed on both sides of the vacuum arc chamber. The heat dissipation device is divided into a central conductive structure and an external heat dissipation fin. The central conductive structure is responsible for the current flow and reducing the heat generation; the external heat dissipation fin is responsible for increasing the convection area with the air and increasing the heat dissipation. In order to further improve the heat dissipation efficiency, a liquid metal guide pipe 4 is embedded in the heat dissipation fin. The liquid metal absorbs the heat conducted in the heat dissipation fin through the guide pipe, which can effectively reduce the temperature of the vacuum arc chamber. The high thermal conductivity of the liquid metal enables it to transfer heat with extremely high efficiency, and realizes efficient circulation flow through the forced convection mechanism of the electromagnetic pump 7. The electromagnetic pump 7 uses magnetic coupling to control the flow of liquid metal, ensuring that it circulates in the entire system at high speed and stability, and quickly takes away the heat on the heat dissipation fins.

[0037] After the liquid metal absorbs the heat of the vacuum arc chamber 1, it flows through the external heat sink 8 for cooling. The external heat sink 8 can use air cooling or water cooling technology to discharge the heat in the liquid metal into the environment through efficient heat exchange, so that the temperature of the liquid metal is restored to an appropriate range. The cooled liquid metal flows back to the liquid storage tank 6, ready to enter the next round of circulation. The entire circulation process is carried out in a closed-loop system, and the liquid metal will not be lost or evaporated, ensuring the stability and continuity of the circulating heat dissipation system. Compared with the traditional open cooling system, the closed-loop circulation of the present invention avoids the problems of coolant loss, corrosion or pollution, and significantly improves the overall heat dissipation efficiency.

[0038] The technical advantages of the present invention lie in its efficient thermal management capability, fast dynamic response speed, environmental protection and sustainability. The high thermal conductivity of liquid metal combined with the forced convection of the electromagnetic pump 7 enables the heat dissipation system to quickly transfer heat to the outside, greatly improving the heat dissipation efficiency of large-capacity generator circuit breakers under large flow conditions. At the same time, the system can adjust the flow rate of liquid metal in real time according to the temperature change of the vacuum arc chamber 1 to ensure the real-time response of the heat dissipation process. This not only enhances the reliability of the circuit breaker under high load conditions, but also extends the service life of the equipment. Liquid metal is recycled in a closed loop, has good environmental protection characteristics, does not produce harmful emissions or waste, and further reduces the energy consumption of system operation. In addition, the modular design and scalability of the system enable it to flexibly adjust the number and size of heat sinks and diversion pipes according to circuit breakers of different specifications, and has good adaptability and broad application prospects.

[0039] In summary, the present invention provides an efficient, reliable and environmentally friendly solution for the heat dissipation of large-capacity circuit breakers through liquid metal circulation heat dissipation technology, which can significantly improve the operating performance and service life of the equipment and has extremely high industry application value.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation, characterized in that: The invention comprises a vacuum interrupter heat sink, a liquid metal guide pipe (4) and a liquid metal cooling circulation system; the liquid metal cooling circulation system is arranged outside the circuit breaker; the vacuum interrupter heat sink is arranged on both sides of the vacuum interrupter (1); the liquid metal guide pipe (4) is embedded in the vacuum interrupter heat sink, and the end of the liquid metal guide pipe (4) is connected to the liquid metal cooling circulation system; the vacuum interrupter heat sink is provided with cooling fins; the liquid metal guide pipe (4) is embedded in the cooling fins.

2. A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to claim 1, characterized in that: The vacuum interrupter heat sink comprises a moving end heat sink (2) and a static end heat sink (3), wherein the moving end heat sink (2) is arranged on the moving end side of the vacuum interrupter, and the static end heat sink (3) is arranged on the static end side of the vacuum interrupter.

3. A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to claim 2, characterized in that: The moving end heat sink (2) comprises a conductive structure and a plurality of moving end heat sink fins, wherein the conductive structure is arranged inside the moving end heat sink (2); the moving end heat sink fins are arranged outside the moving end heat sink (2), and the liquid metal guide pipe (4) is embedded in the moving end heat sink fins.

4. A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to claim 2, characterized in that: The static end heat sink (3) comprises a conductive structure and a plurality of static end heat sink fins, wherein the conductive structure is arranged inside the static end heat sink (3); the static end heat sink fins are arranged outside the static end heat sink (3); and the liquid metal guide pipe (4) is embedded in the static end heat sink fins.

5. A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to claim 4, characterized in that: The moving end heat dissipation fins are elliptical, and each layer of fins is evenly distributed; the static end heat dissipation fins are elliptical, and each layer of fins is evenly distributed, and the sizes of the static end heat dissipation fins are staggered.

6. A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to claim 5, characterized in that: The plane where the moving end heat dissipation fins and the static end heat dissipation fins are located is perpendicular to the flow direction of the vacuum interrupter.

7. A large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to claim 5, characterized in that: The moving end heat sink fin and the static end heat sink fin are provided with grooves (5), and the liquid metal flow guide pipe (4) is embedded in the grooves (5) of the moving end heat sink fin and the static end heat sink fin in a spiral shape, and is nested in the moving end heat sink fin and the static end heat sink fin in multiple circles.

8. The heat dissipation structure of a large-capacity generator circuit breaker based on liquid metal heat dissipation according to claim 1, characterized in that: The liquid metal cooling circulation system comprises a liquid metal storage tank (6), an electromagnetic pump (7) and an external heat sink (8); the output end of the liquid metal storage tank (6) is in communication with the liquid metal guide pipe (4); the electromagnetic pump (7) is arranged on the connecting pipeline between the liquid metal storage tank (6) and the liquid metal guide pipe (4); and the input end of the liquid metal storage tank (6) is connected to the external heat sink (8).

9. The heat dissipation structure of a large-capacity generator circuit breaker based on liquid metal heat dissipation according to claim 1, characterized in that: The vacuum interrupter (1) and its moving end heat sink (2) and static end heat sink (3) are arranged inside the circuit breaker, and the liquid metal cooling circulation system is arranged outside the circuit breaker.

10. A working method of a large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to claim 1, based on the large-capacity generator circuit breaker heat dissipation structure based on liquid metal heat dissipation according to any one of claims 1-9, characterized in that: include, Liquid metal flows out of the liquid metal cooling circulation system, is accelerated by an electromagnetic pump (7) of the liquid metal cooling circulation system, and then flows through a moving end heat sink (2) and a stationary end heat sink (3) of a vacuum interrupter heat sink. When flowing through a liquid metal guide pipe (4), the heat in the heat sink fins is removed by heat conduction. At the same time, the temperature of the cooled liquid metal increases due to the absorption of heat. After flowing out of the heat sink fins, the high-temperature liquid metal is cooled by an external heat sink (8) of the liquid metal cooling circulation system. Subsequently, the cooled liquid metal flows back into a liquid metal storage tank (6) of the liquid metal cooling circulation system.

Images