A primary and secondary fused vacuum circuit breaker

Abstract

This invention discloses a primary and secondary integrated vacuum pole-mounted circuit breaker, belonging to the technical field of vacuum pole-mounted circuit breakers. It includes a circuit breaker assembly and an auxiliary support assembly. The auxiliary support assembly includes a non-contact hollow support base plate disposed below a base housing, two symmetrically and invertedly integrally connected hollow L-shaped support plates to the top surface of the hollow support base plate, and a hollow support box plate integrally connected to the end of the two hollow L-shaped support plates away from the hollow support base plate. Multiple arc-shaped hollow clamping plates for clamping and engaging each pole are detachably connected to the side of the hollow support box plate away from the hollow L-shaped support plates. A heat dissipation electronic fan is disposed between the two hollow L-shaped support plates. This invention not only prevents the poles from shifting due to external vibration or electromagnetic force, but also provides directional cooling for key heat-generating components (such as the pole contact system and conductive rod).

Description

Technical Field

[0001] This invention belongs to the technical field of vacuum pole-mounted circuit breakers, and in particular, a primary and secondary integrated vacuum pole-mounted circuit breaker. Background Technology

[0002] In integrated primary and secondary power systems, vacuum pole-mounted circuit breakers are critical devices used to protect and control high-voltage circuits in power transmission networks. They prevent damage to the power grid caused by overloads, short circuits, and other faults by quickly disconnecting or closing circuits. With the development of smart grids, the requirements for circuit breakers are constantly increasing. They not only need to possess high reliability and long lifespan, but also need to be able to adapt to complex and changing working environments, such as high temperatures and frequent vibrations.

[0003] Existing vacuum pole-mounted circuit breakers mostly use direct installation. However, the vibration damping design of these circuit breakers often only targets the enclosure itself, neglecting the overall buffer protection of the poles and their associated structures. Especially in outdoor installation environments, external factors such as wind loads, earthquakes, and vehicle traffic can cause continuous vibrations to the equipment, lacking consideration for the coordinated force distribution among multiple poles. Under high-voltage and high-current operating conditions, electromagnetic forces can cause slight vibrations or displacements in the poles. Due to the lack of buffer design in traditional installation methods, these minute movements cannot be effectively absorbed, leading to changes in the relative positions of the poles. Pole misalignment reduces the alignment of the internal conductive rod and contact system, increases contact resistance, and can cause localized overheating. If not detected and addressed in time, the overheated area may cause aging or even breakdown of the insulation material, ultimately leading to circuit breaker failure, tripping, or explosion. Furthermore, in extreme cases (such as lightning strikes or short circuits), severe pole displacement can cause mechanical structural fractures, resulting in equipment damage and power outages. Summary of the Invention

[0004] The purpose of this invention is to provide a primary and secondary integrated vacuum pole-mounted circuit breaker to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a primary and secondary integrated vacuum pole-mounted circuit breaker, comprising:

[0006] The circuit breaker assembly includes a base housing and multiple poles that are equidistantly and longitudinally inserted into the top surface of the base housing.

[0007] The auxiliary support assembly includes a non-contact hollow support base plate located below the base box, two symmetrical and inverted hollow L-shaped support plates integrally connected to the top surface of the hollow support base plate, and a hollow support box plate integrally connected to the two hollow L-shaped support plates at the end away from the hollow support base plate.

[0008] The hollow support box plate has multiple arc-shaped hollow clamping plates detachably connected to the side away from the hollow L-bracket plate for clamping and engaging each pole post. A heat dissipation electronic fan is provided between the two hollow L-bracket plates. The output end of the heat dissipation electronic fan is connected to the hollow support box plate and the two hollow L-bracket plates respectively. The base box is connected to the hollow L-bracket plate and the hollow support base plate respectively through shock-absorbing and buffering components. The arc-shaped hollow clamping plate is aligned with the guide contact system part inside the pole post housing on the outer wall of the pole post.

[0009] In this preferred embodiment, mounting lugs are welded to the lower parts of both ends of the base box, and both mounting lugs are bolted to the external bracket, so that the lower part of the base box has a space to accommodate the hollow support base plate.

[0010] In this preferred embodiment, the tail end of the heat dissipation electronic fan is integrally connected to a gas input tail cover, and a three-way split pipe is connected through the hollow support box plate and the two hollow L-shaped bracket plates. The output end of the gas input tail cover is connected to the three-way split pipe through a flow pipe.

[0011] In this preferred embodiment, a hollow disc is integrally connected to the middle of the three-way splitter pipe, and the end of the delivery pipe away from the gas input tail cover is connected to the bottom of the hollow disc.

[0012] In a preferred embodiment of this scheme, the shock-absorbing and buffering components include a first hydraulic damper installed on the inner wall of each hollow L-shaped support plate and at least four third hydraulic dampers arranged in a rectangular pattern installed below the base box and on the top surface of the hollow support base plate.

[0013] In this preferred embodiment, the end of each first hydraulic damper furthest from the hollow L-shaped support plate is bolted to the side wall of the base box, and the end of each third hydraulic damper furthest from the hollow support plate is bolted to the bottom plate of the base box.

[0014] In this preferred embodiment, each of the arc-shaped hollow clamping plates has an arc-shaped heat-conducting sheet attached to the inner wall near the pole post. The inner wall of the arc-shaped heat-conducting sheet is integrally connected with multiple heat-conducting extension blocks at equal intervals. Each heat-conducting extension block penetrates the arc-shaped hollow clamping plate and abuts against the outer wall of the pole post.

[0015] In this preferred embodiment, multiple heat dissipation extension plates are integrally connected at equal intervals to one side of the outer wall of the arc-shaped heat-conducting plate and the heat dissipation extension plates are cooled by gas blowing in the inner cavity of the arc-shaped hollow clamping plate to lower the temperature of the arc-shaped heat-conducting plate. Both ends of the inner bottom wall of the arc-shaped hollow clamping plate have exhaust mesh holes.

[0016] In this preferred embodiment, each of the inner cavities of the arc-shaped hollow clamping plate is filled with an inflatable buffer airbag at both ends, and the buffer airbag elastically abuts against the inner wall of the arc-shaped hollow clamping plate.

[0017] In this preferred embodiment, each of the arc-shaped hollow clamping plates has an external threaded tube integrally connected to the middle position of the back side away from the pole post, and the hollow support box plate has internal threaded holes for installing the external threaded tube equidistantly opened on the outer wall of the side near the arc-shaped hollow clamping plate.

[0018] The internal threaded hole is located at one end of the hollow support box plate, and there is a limiting support platform inside. A silicone buffer sealing gasket is provided on the limiting support platform. A compression spring is placed on the silicone buffer sealing gasket. Another silicone buffer sealing gasket is placed on the top of the compression spring. When the external threaded pipe is screwed into the internal threaded hole, it squeezes the silicone buffer sealing gasket and the compression spring.

[0019] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0020] This integrated primary and secondary vacuum pole-mounted circuit breaker features multiple detachably connected arc-shaped hollow clamping plates on a hollow support housing. Each clamping plate clamps an adjacent pole, creating a cooperative force-bearing structure that enhances the overall stability of the poles. This clamping structure not only prevents pole displacement due to external vibration or electromagnetic forces but also ensures good contact of the internal contact system under high current conditions. This enhances electrical connection reliability, reduces failure rates, and improves the safety and stability of equipment operation.

[0021] By incorporating a cooling fan positioned between two hollow L-shaped support plates and connected to both the hollow support box plate and the hollow L-shaped support plate, cooling gas can be efficiently delivered to each hollow structure and ultimately flow into the pole clamping structure and the base housing. This design breaks away from the traditional circuit breaker's reliance on natural heat dissipation or localized forced air cooling, achieving targeted cooling of key heat-generating components (such as the pole contact system and conductive rods), significantly improving heat dissipation efficiency and maintaining long-term stable operation of the equipment.

[0022] By filling the inner cavity of the arc-shaped hollow clamping plate in the clamping structure with gas and aligning it with the conductive contact system inside the electrode housing, the gas can not only circulate within the clamping plate but also generate a certain amount of heat exchange within the electrode housing. This structural design utilizes the thermal conductivity and convection properties of gas to actively cool the hot spots inside the electrode, thereby effectively reducing problems such as material aging and increased contact resistance caused by temperature rise. This achieves the effect of extending the electrode life and ensuring stable electrical performance. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the installation structure of the second hydraulic damper of the present invention;

[0026] Figure 3 This is a schematic diagram of the connection structure of the second hydraulic damper of the present invention;

[0027] Figure 4 This is a schematic diagram of the auxiliary support assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the installation structure of the exhaust square tube of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the box base plate of the present invention;

[0030] Figure 7 This is a schematic diagram showing the disassembled structure of the compression spring and silicone buffer sealing gasket of the present invention;

[0031] Figure 8 This is a cross-sectional view of the internal threaded hole of the present invention;

[0032] Figure 9 This is a schematic diagram showing the connection between the externally threaded tube and the internally threaded hole of the present invention.

[0033] Figure 10 This is a schematic diagram of the connection structure between the compression spring and the silicone buffer sealing gasket of the present invention;

[0034] Figure 11 This is a cross-sectional view of the arc-shaped hollow clamping plate of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] In the diagram: 1. Circuit breaker assembly; 2. Base housing; 3. Terminal post; 4. Mounting lug; 5. Ventilation mesh; 6. Auxiliary support assembly; 7. Arc-shaped hollow clamping plate; 8. Hollow support box plate; 9. Hollow L-shaped bracket plate; 10. Hollow support base plate; 11. Cooling fan; 12. First hydraulic damper; 13. Support link; 14. Second hydraulic damper; 15. Electrical component holder; 16. Support top plate; 17. Gas input tail cover; 18. Three-way shunt pipe; 19. Third hydraulic damper. 20. Inlet pipe; 21. Exhaust square pipe; 22. Extension ear plate; 23. Threaded hole; 24. Hollow disc; 25. Box bottom plate; 26. Positioning square opening; 27. External threaded pipe; 28. Compression spring; 29. ​​Silicone buffer sealing gasket; 30. Thermal insulation layer; 31. Internal threaded hole; 32. Limiting support platform; 33. Vent hole; 34. Gas diversion hood; 35. Arc-shaped heat-conducting sheet; 36. Heat-conducting extension block; 37. Heat dissipation extension sheet; 38. Buffer airbag; 39. Exhaust mesh. Detailed Implementation

[0037] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0038] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this invention, and are explained here together.

[0039] This embodiment provides, for example Figures 1 to 11 The primary and secondary integrated vacuum pole-mounted circuit breaker shown includes: a circuit breaker assembly 1 and an auxiliary support assembly 6.

[0040] In this embodiment, the circuit breaker assembly 1 includes a base housing 2 and multiple pole posts 3 that are equidistantly and longitudinally inserted into the top surface of the base housing 2. The auxiliary support assembly 6 includes a non-contact hollow support base plate 10 disposed below the base housing 2, two symmetrical and inverted hollow L-shaped support plates 9 integrally connected to the top surface of the hollow support base plate 10, and a hollow support box plate 8 integrally connected to the end of the two hollow L-shaped support plates 9 away from the hollow support base plate 10.

[0041] In this embodiment, a plurality of arc-shaped hollow clamping plates 7 are detachably and continuously connected to the side of the hollow support box plate 8 away from the hollow L-bracket plate 9 for clamping and snapping onto each pole post 3. Each arc-shaped hollow clamping plate 7 clamps onto the adjacent pole post 3, thereby enabling the pole post 3 to be stably installed and erected to prevent tilting. A heat dissipation electronic fan 11 is provided between the two hollow L-bracket plates 9. The output end of the heat dissipation electronic fan 11 is connected to the hollow support box plate 8 and the two hollow L-bracket plates 9 respectively, so that the gas output by the heat dissipation electronic fan 11 flows into the hollow L-bracket plate 9 and the hollow support box plate 8. The base box 2 is connected to the hollow L-bracket plate 9 and the hollow support base plate 10 respectively through shock-absorbing buffer components for supporting and buffering the hollow L-bracket plate 9 and the hollow support base plate 10. The arc-shaped hollow clamping plate 7 aligns with the contact system inside the electrode post 3's housing on its outer wall. Simultaneously, the design of the heat dissipation fan 11 allows the inner cavity of the arc-shaped hollow clamping plate 7 to be filled with gas, thereby cooling and absorbing heat from the contact system or conductive rod inside the electrode post 3's housing. Supporting rods 13 are installed on the inner walls of the two hollow L-shaped support plates 9, with one end of each rod fixedly connected to the outer wall of the heat dissipation fan 11, thus securing the fan. The design of the heat dissipation fan 11's output end being connected to the hollow support box plate 8 and the two hollow L-shaped support plates 9 allows the cooling gas to not only cool the electrode post 3 but also, after flowing through the hollow structures, enter the base housing 2 to cool the components within the base housing 2 and the conductive rods extending from the electrode post 3 into the base housing 2. This design achieves a "one gas, multiple uses" gas recycling mechanism, avoiding the structural complexity caused by the need to configure multiple cooling devices separately in traditional systems, and achieving multiple effects such as improving space utilization, reducing energy consumption, and enhancing overall heat dissipation efficiency.

[0042] In this embodiment, mounting ear plates 4 are welded to the lower parts of both ends of the base box 2. Both mounting ear plates 4 are bolted to the external bracket, so that the base box 2 has a space at the bottom to accommodate the hollow support base plate 10.

[0043] In this embodiment, the tail end of the heat dissipation electronic fan 11 is integrally connected to a gas input tail cover 17, and a three-way split pipe 18 is connected between the hollow support box plate 8 and the two hollow L-shaped bracket plates 9. The output end of the gas input tail cover 17 is connected to the three-way split pipe 18 through the flow pipe 20.

[0044] In this embodiment, a hollow disk 24 is integrally connected to the middle of the three-way splitter pipe 18. The end of the conveyor pipe 20 away from the gas input tail cover 17 is connected to the bottom of the hollow disk 24, so that the gas output from the heat dissipation fan 11 is input into the hollow disk 24 through the conveyor pipe 20, and then input into the three branch pipes of the three-way splitter pipe 18 through the hollow disk 24, thereby flowing into the hollow support box plate 8 and the inner cavity of the two hollow L-branch plates 9.

[0045] In this embodiment, the shock absorption and buffer components include a first hydraulic damper 12 installed on the inner wall of each hollow L-bracket plate 9 and at least four third hydraulic dampers 19 installed below the base box 2 and located on the top surface of the hollow support base plate 10 in a rectangular arrangement.

[0046] In this embodiment, the end of each first hydraulic damper 12 furthest from the hollow L-shaped support plate 9 is bolted to the side wall of the base box 2, and the end of each third hydraulic damper 19 furthest from the hollow support base plate 10 is bolted to the bottom plate 25 of the base box 2. This allows the first hydraulic dampers 12 to buffer the hollow L-shaped support plate 9 on the side of the base box 2, while the third hydraulic dampers 19 buffer the bottom plate 25 of the base box 2 and the entire base box 2 on the top of the hollow support base plate 10.

[0047] In this embodiment, each arc-shaped hollow clamping plate 7 has an arc-shaped heat-conducting sheet 35 attached to its inner wall near the pole post 3. Multiple heat-conducting extension blocks 36 are integrally connected at equal intervals to the inner wall of the arc-shaped heat-conducting sheet 35. Each heat-conducting extension block 36 penetrates the arc-shaped hollow clamping plate 7 and abuts against the outer wall of the pole post 3. This allows the heat-conducting extension blocks 36 to directly contact the shell of the pole post 3, absorbing heat and guiding it to the arc-shaped heat-conducting sheet 35, thus reducing the temperature inside the pole post 3 and the contact system. Simultaneously, the arc-shaped heat-conducting sheet 35 directly contacts the gas inside the arc-shaped hollow clamping plate 7, cooling the arc-shaped heat-conducting sheet 35. This not only cools the inside of the pole post 3 but also cools the arc-shaped heat-conducting sheet 35, facilitating the cyclical heat conduction of the arc-shaped heat-conducting sheet 35. By using a heat-conducting extension block 36 that penetrates the arc-shaped hollow clamping plate 7 and abuts against the outer wall of the pole post 3, this clamping structure not only performs its clamping function but also acts as a bridge for heat conduction, guiding the heat generated inside the pole post to the cooling gas inside the clamping plate. This structure breaks away from the traditional limitation of clamping components as merely mechanical support parts, achieving a three-in-one functional integration of "clamping + heat conduction + heat dissipation," thereby improving the temperature control capability inside the pole post and preventing malfunctions caused by localized overheating.

[0048] In this embodiment, multiple heat dissipation extension plates 37 are integrally connected at equal intervals to one side of the outer wall of the arc-shaped heat-conducting plate 35 opposite to the heat dissipation extension block 36. The heat dissipation extension plates 37 are cooled by gas blowing inside the arc-shaped hollow clamping plate 7, thus cooling the arc-shaped heat-conducting plate 35. Both ends of the inner bottom wall of the arc-shaped hollow clamping plate 7 have exhaust mesh holes 39. This allows the gas to be discharged from the exhaust mesh holes 39 after contacting the arc-shaped heat-conducting plate 35 and the heat dissipation extension plates 37, ensuring that the gas in the arc-shaped hollow clamping plate 7 does not accumulate or gradually heat up due to accumulation. Both ends of each arc-shaped hollow clamping plate 7 are integrally connected to extension ear plates 22. Each extension ear plate 22 has a threaded hole 23, and a bolt is connected in the threaded hole 23, so that the extension ear plate 22 is fixed to the pole post 3 by the bolt, thereby firmly clamping the arc-shaped hollow clamping plate 7 onto the pole post 3.

[0049] In this embodiment, each arc-shaped hollow clamping plate 7 has an inflatable buffer airbag 38 filling both ends of its inner cavity. The buffer airbag 38 elastically abuts against the inner wall of the arc-shaped hollow clamping plate 7. The design of the buffer airbag 38 provides shock absorption for the arc-shaped hollow clamping plate 7. When the pole post 3 vibrates, the arc-shaped hollow clamping plate 7 not only clamps the pole post 3 but also buffers it under the action of the buffer airbag 38, reducing the transmission and continuation of this vibration. By setting the buffer airbag 38 at both ends of the inner cavity of the arc-shaped hollow clamping plate 7, the clamping structure achieves both clamping and fixing of the pole post 3 and good shock absorption capability. The buffer airbag 38, through inflation, abuts against the inner wall of the clamping plate, absorbing some kinetic energy when mechanical vibration or impact occurs, preventing rigid collisions between the clamping plate and the pole post. This design not only improves the stability of the clamping structure itself, but also further protects the integrity of the internal contact system of the pole 3 housing, achieving the dual effect of improving electrical connection stability and extending equipment life.

[0050] In this embodiment, each arc-shaped hollow clamping plate 7 has an externally threaded tube 27 integrally connected to the middle position of the back side away from the pole post 3. The hollow support box plate 8 has internally threaded holes 31 for installing the externally threaded tube 27 at equal intervals on the outer wall of one side near the arc-shaped hollow clamping plate 7. The internally threaded hole 31 is located in the inner cavity of the hollow support box plate 8 and has a limiting support platform 32. The limiting support platform 32 has a vent hole 33 for gas flow in the middle. A silicone buffer sealing gasket 29 is provided on the limiting support platform 32. A compression spring 28 is placed on the silicone buffer sealing gasket 29. Another silicone buffer sealing gasket 29 is placed on the top of the compression spring 28. When the externally threaded tube 27 is screwed into the internally threaded hole 31, it squeezes the silicone buffer sealing gasket 29 and the compression spring 28. Two silicone buffer sealing gaskets 29 are respectively connected to both ends of the compression spring 28. The design of the compression spring 28 and silicone buffer sealing gaskets 29 can further dampen the clamping and installation of the arc-shaped hollow clamping plate 7 without affecting other normal conveying, and further buffer the pole column 3. The inner wall of the hollow support box plate 8 is bonded with a heat insulation pad 30. The end of the internal threaded hole 31 located in the inner cavity of the hollow support box plate 8 is integrally connected to a gas guide hood 34. The flared design of the gas guide hood 34 guides the gas flow to the vent hole 33. The flared design of the gas guide hood 34 and its connection to the end of the internal threaded hole 31 allow the cooling gas to be efficiently guided to the vent hole 33 after entering the hollow support box plate 8, forming a directional airflow path. This design not only improves the gas flow efficiency, but also reduces the energy loss caused by turbulence, thereby improving the overall heat dissipation system efficiency and achieving the dual effects of energy saving, consumption reduction, and optimized airflow organization. A hollow support base plate 10 is symmetrically and integrally connected to an exhaust square pipe 21 on its top surface at one end below the base box 2. The exhaust square pipe 21 communicates with the inner cavity of the hollow support base plate 10. Two positioning square ports 26 are symmetrically opened on the top surface of the box base plate 25 for inserting the exhaust square pipe 21, so that the exhaust square pipe 21 extends from the positioning square ports 26 into the inner cavity of the base box 2. This allows the gas flowing into the hollow L-shaped support plate 9 to flow towards the hollow support base plate 10, and the gas in the hollow support base plate 10 flows through the exhaust square pipe 21. The device in the base box 2 and the conductive rod extending into the base box 2 inside the pole post 3 are cooled by the hollow support base plate 10, which has at least four third hydraulic dampers 19 arranged in a rectangular shape on the top. The structure is designed to be compatible with the exhaust square pipe 21 inserted into the positioning square opening 26 at the bottom of the base box 2. This design allows the support base plate to achieve longitudinal shock absorption and buffering, and also to achieve longitudinal limiting and guiding functions through the sliding cooperation between the exhaust square pipe 21 and the positioning square opening 26.This structure not only enhances the system's vibration resistance but also achieves precise alignment and relative movement compatibility between the support base plate 10 and the base box 2 without adding additional positioning structures, resulting in a comprehensive effect of structural simplification, accurate positioning, and stable operation. Ventilation meshes 5 are located on both outer walls of the base box 2 for gas discharge, preventing gas accumulation and temperature rise within the base box 2. Simultaneously, when the third hydraulic damper 19 buffers, it drives the exhaust square pipe 21 to move up and down within the positioning square opening 26, longitudinally positioning the hollow support base plate 10 without affecting the buffering and shock absorption, preventing the hollow support base plate 10 from shifting position. Multiple electrical component seats 15 are located on the other outer wall of the base box 2. Each electrical component seat 15 has a second hydraulic damper 14 below it. The bottom end of the second hydraulic damper 14 is bolted to the top surface of the hollow support base plate 10. A support top plate 16 is welded to the top of each second hydraulic damper 14, with the top surface of the support top plate 16 pressing upwards against the electrical component seat 15.

[0051] Working principle

[0052] In this primary and secondary integrated vacuum pole-mounted circuit breaker, when the circuit breaker is put into use, the base housing 2 and pole posts 3 in the circuit breaker assembly 1 begin normal operation. The arc-shaped hollow clamping plate 7 is fixedly connected to the pole posts 3 through the threaded holes 23 on the extension ear plate 22, ensuring that each pole post 3 is securely clamped. Each arc-shaped hollow clamping plate 7 clamps two adjacent pole posts 3, forming an overall reinforcement of the pole posts 3 to prevent tilting or displacement. An arc-shaped heat-conducting plate 35 is attached to the inner wall of the arc-shaped hollow clamping plate 7, and its internal heat-conducting extension block 36 penetrates the clamping plate and abuts against the outer wall of the pole post 3. The heat-conducting extension block 36 conducts heat from inside the pole post 3 housing to the arc-shaped heat-conducting plate 35. Heat dissipation extension plates 37 are distributed on the back of the arc-shaped heat-conducting plate 35 and are cooled by airflow within the clamping plate cavity, further dissipating heat.

[0053] A high-speed airflow is generated by a cooling fan 11 and transported through a gas input tail cover 17 and a flow pipe 20 to a three-way branch pipe 18. A hollow disc 24 is located in the middle of the three-way branch pipe 18, which evenly distributes the airflow to three branches, flowing to the hollow support box plate 8 and the two hollow L-shaped support plates 9 respectively. The gas enters the hollow support box plate 8 and the hollow L-shaped support plates 9 sequentially, and then flows into the hollow support base plate 10. The gas in the hollow support base plate 10 enters the inner cavity of the base housing 2 through the exhaust square pipe 21, cooling the components in the base housing 2 and the conductive rods extending into the base housing 2 from the inside of the pole post 3. The hot gas in the base housing 2 is discharged through the vent mesh 5, maintaining a stable internal temperature. The gas in the arc-shaped hollow clamping plate 7 is discharged through the exhaust mesh 39 to prevent gas accumulation and localized overheating. A gas guide hood 34 guides the airflow to the vent holes 33 on the limiting support platform 32, ensuring even airflow distribution.

[0054] The first hydraulic damper 12 is installed on the inner wall of the hollow L-shaped support plate 9 and is bolted to the side wall of the base box 2 to absorb lateral vibration. The third hydraulic damper 19 is distributed on the top surface of the hollow support base plate 10 in a rectangular arrangement and is bolted to the bottom plate 25 of the base box 2 to absorb longitudinal impact. The buffer airbag 38 is filled in the inner cavities at both ends of the arc-shaped hollow clamping plate 7 and elastically abuts against the inner wall to provide additional vibration buffer. The external threaded tube 27 cooperates with the internal threaded hole 31 to form an adjustable connection between the arc-shaped hollow clamping plate 7 and the hollow support box plate 8. A compression spring 28 and a silicone buffer sealing gasket 29 are set at the connection to achieve a flexible connection while ensuring airtightness.

[0055] The exhaust square pipe 21 is inserted into the positioning square opening 26 of the base box 2, serving to longitudinally position the hollow support base plate 10. When the third hydraulic damper 19 performs a buffering action, the exhaust square pipe 21 can slide up and down in the positioning square opening 26, which neither affects the shock absorption effect nor prevents the hollow support base plate 10 from shifting. A second hydraulic damper 14 is installed below the electrical component seat 15, and a support top plate 16 is welded to its top, providing support for the electrical component seat 15 by pushing upward. The bottom of the second hydraulic damper 14 is bolted to the hollow support base plate 10, forming a stable vertical support chain. An insulation pad 30 is adhered to the inner wall of the hollow support box plate 8 to reduce the influence of the external environment on the internal gas temperature.

[0056] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A primary and secondary integrated vacuum pole-mounted circuit breaker, characterized in that, include: The circuit breaker assembly (1) includes a base housing (2) and multiple poles (3) that are longitudinally inserted at equal intervals on the top surface of the base housing (2). The auxiliary support assembly (6) includes a non-contact hollow support base plate (10) set below the base box (2), two symmetrical and inverted hollow L-shaped support plates (9) integrally connected to the top surface of the hollow support base plate (10), and a hollow support box plate (8) integrally connected to the end of the two hollow L-shaped support plates (9) away from the hollow support base plate (10). Among them, the hollow support box plate (8) is detachably connected to a plurality of arc-shaped hollow clamping plates (7) for clamping and snapping each pole post (3) on the side away from the hollow L bracket plate (9). A heat dissipation electronic fan (11) is provided between the two hollow L bracket plates (9). The output end of the heat dissipation electronic fan (11) is connected to the hollow support box plate (8) and the two hollow L bracket plates (9) respectively. The base box (2) is connected to the hollow L bracket plate (9) and the hollow support base plate (10) respectively through shock-absorbing buffer components. The arc-shaped hollow clamping plate (7) is aligned with the guide contact system part inside the pole post (3) shell on the outer wall of the pole post (3). Each of the arc-shaped hollow clamping plates (7) has an external threaded tube (27) integrally connected to the middle position of the back side away from the pole post (3). The hollow support box plate (8) has internal threaded holes (31) for installing the external threaded tube (27) equidistantly opened on the outer wall of the side near the arc-shaped hollow clamping plate (7). The internal threaded hole (31) is located in the cavity of the hollow support box plate (8) and has a limiting support platform (32) at one end. A silicone buffer sealing gasket (29) is provided on the limiting support platform (32). A compression spring (28) is placed on the silicone buffer sealing gasket (29). Another silicone buffer sealing gasket (29) is placed on the top of the compression spring (28). When the external threaded tube (27) is screwed into the internal threaded hole (31), it squeezes the silicone buffer sealing gasket (29) and the compression spring (28).

2. The primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 1, characterized in that: The base box (2) has mounting ear plates (4) welded to the lower part of both ends. The two mounting ear plates (4) are bolted to the external bracket, so that the base box (2) has a space for accommodating the hollow support base plate (10) at the bottom.

3. The primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 2, characterized in that: The tail end of the heat dissipation electronic fan (11) is integrally connected to a gas input tail cover (17). A three-way split pipe (18) is connected between the hollow support box plate (8) and the two hollow L-shaped bracket plates (9). The output end of the gas input tail cover (17) is connected to the three-way split pipe (18) through the flow pipe (20).

4. The primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 3, characterized in that: The hollow disc (24) is integrally connected to the middle of the three-way splitter pipe (18), and the end of the delivery pipe (20) away from the gas input tail cover (17) is connected to the bottom of the hollow disc (24).

5. A primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 4, characterized in that: The shock-absorbing and buffering components include a first hydraulic damper (12) installed on the inner wall of each hollow L-bracket plate (9) and at least four third hydraulic dampers (19) installed below the base box (2) and located on the top surface of the hollow support base plate (10) in a rectangular arrangement.

6. The primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 5, characterized in that: The end of each of the first hydraulic dampers (12) away from the hollow L-bracket plate (9) is bolted to the side wall of the base box (2), and the end of each of the third hydraulic dampers (19) away from the hollow support base plate (10) is bolted to the box bottom plate (25) of the base box (2).

7. A primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 6, characterized in that: Each of the arc-shaped hollow clamping plates (7) has an arc-shaped heat-conducting sheet (35) attached to the inner wall of the pole post (3). The inner wall of the arc-shaped heat-conducting sheet (35) is integrally connected with multiple heat-conducting extension blocks (36) at equal intervals. Each heat-conducting extension block (36) penetrates the arc-shaped hollow clamping plate (7) and abuts against the outer wall of the pole post (3).

8. A primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 7, characterized in that: The arc-shaped heat-conducting plate (35) is connected to a plurality of heat-dissipating extension plates (37) at equal intervals on one side of the outer wall of the back heat-conducting extension block (36). The heat-dissipating extension plates (37) are cooled by gas in the inner cavity of the arc-shaped hollow clamping plate (7) to cool the arc-shaped heat-conducting plate (35). The inner bottom walls at both ends of the arc-shaped hollow clamping plate (7) have exhaust mesh holes (39).

9. A primary and secondary integrated vacuum pole-mounted circuit breaker according to claim 8, characterized in that: Each of the inner cavities of the arc-shaped hollow clamping plate (7) is filled with an inflatable buffer airbag (38) at both ends, and the buffer airbag (38) elastically abuts against the inner wall of the arc-shaped hollow clamping plate (7).

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