High-voltage switch cabinet with mechanical buffer door plate and method

Abstract

The invention discloses a high-voltage switch cabinet with a mechanical buffer door plate and a method, and belongs to the technical field of high-voltage switch cabinets, the high-voltage switch cabinet comprises a cabinet body mechanism, the left side of the cabinet body mechanism is provided with a heat dissipation mechanism, the heat dissipation mechanism is used for dissipating heat from the interior of the cabinet body mechanism, and the mechanical buffer door plate is locked through linkage cooperation of a buffer mechanism and a locking mechanism. When the sealing mechanism is closed, a buffering rubber mat of the buffering mechanism firstly makes contact with the sealing mechanism, a first piston rod drives a first piston plate to compress internal inert gas and a spring to form buffering force, meanwhile, the inert gas flows into a flow dividing guide pipe of the locking mechanism through a circulating connecting pipe, and a second piston plate and a second piston rod can be pushed to drive a locking positioning rod to stretch out; the buffer mechanism is inserted into the locking mechanism and forms insertion locking with the locking push rod of the sealing mechanism, so that the buffer mechanism triggers the locking mechanism to complete double locking while achieving buffer speed reduction, and the device prevents the sealing mechanism from damaging a connecting piece and internal precise electrical elements due to impact force generated by inertia.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switchgear technology, and in particular to a high-voltage switchgear and method with a mechanical buffer door. Background Technology

[0002] High-voltage switchgear is an indispensable and crucial piece of equipment in power systems, primarily used for the control, protection, and monitoring of power lines. It is widely used in power plants, substations, industrial and mining enterprises, and other locations. The switchgear panel, as a vital component, directly impacts the overall performance of the switchgear due to its switching stability and safety. The doors of existing high-voltage switchgear often use simple hinge connections, lacking effective buffering mechanisms during switching. When operators open or close the doors, the doors are prone to significant impact due to inertia. This can damage the connecting parts between the door and the cabinet (such as hinges and locks), shortening the equipment's lifespan. Furthermore, the impact can affect the stability of precision electrical components inside the switchgear, and may even generate sparks due to collisions, posing safety hazards. In addition, some switchgear using hydraulic or pneumatic buffers have complex buffering structures, high costs, and are prone to leaks of hydraulic oil or compressed air, making maintenance difficult and unsuitable for harsh industrial environments. Summary of the Invention

[0003] The purpose of this invention is to address the problems in the prior art where impact forces may affect the stability of precision electrical components inside switchgear, and may even generate sparks due to collisions, leading to safety hazards. In addition, some switchgear using hydraulic or pneumatic buffers have complex buffer structures, high costs, and are prone to leakage of hydraulic oil or compressed air, making maintenance difficult and unsuitable for harsh industrial environments. Therefore, this invention proposes a high-voltage switchgear and method with a mechanical buffer door panel.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A high-voltage switchgear with a mechanical buffer door includes a cabinet mechanism. A heat dissipation mechanism is installed on the left side of the cabinet mechanism to dissipate heat from inside the cabinet mechanism. A closing mechanism is slidably disposed at the front end of the cabinet mechanism to cover the front opening of the cabinet mechanism. An adsorption mechanism is fixedly connected to the front end of the cabinet mechanism to limit the closing mechanism. A buffer mechanism is fixedly connected to the left end face of the cabinet mechanism. A locking mechanism is also fixedly connected to the left side of the cabinet mechanism. The locking mechanism is connected to the buffer mechanism and its opening and closing are controlled by the buffer mechanism. The locking mechanism is used for double locking of the closing mechanism.

[0005] Preferably, the cabinet mechanism includes a supporting square tube, a supporting partition, a wiring busbar, a warning light, and a guide groove. The supporting square tube is provided in two places, and the two supporting square tubes are fixedly arranged in a linear array at the bottom of the cabinet mechanism. The supporting partition is fixedly arranged in a linear array on the inner side of the cabinet mechanism. The wiring busbar is fixedly arranged on the inner side of the supporting partition. The guide groove is opened on the upper and lower sides of the front end of the cabinet mechanism. The warning light is fixedly arranged at the top of the cabinet mechanism.

[0006] Preferably, the heat dissipation mechanism includes a heat dissipation filter and heat dissipation fan blades. The main body of the heat dissipation mechanism is a circular cover structure. The heat dissipation filter is fixedly arranged in a linear array inside the heat dissipation mechanism, and the heat dissipation fan blades are rotatably arranged inside the heat dissipation filter.

[0007] Preferably, the closing mechanism includes a grip, a cabinet door, an observation window, a controller, a guide slide, a guide protrusion, and a guide pulley. The grip is fixedly disposed at the front end of the closing mechanism, the cabinet door is hinged to the inside of the closing mechanism and locked by a mechanical lock, and the observation window is embedded in the cabinet door.

[0008] Preferably, the controller is fixedly installed at the front end of the cabinet door component, and there are two guide slides. The two guide slides are symmetrically fixedly installed on the rear side of the closing mechanism and slidably installed in the guide groove. The guide protrusions are symmetrically fixedly installed on the outer wall of the guide slides, and the guide pulleys are rotatably installed in the guide slides.

[0009] Preferably, the adsorption mechanism includes a contact switch, a positioning slot, a locking end seat, a mounting base, and a locking push rod. The main body of the adsorption mechanism is an electromagnet structure. The contact switch is fixedly installed in the groove on the right side of the adsorption mechanism. The positioning slot opens and closes on one side of the closed mechanism, and a metal sheet matching the adsorption mechanism is fixedly installed inside the positioning slot.

[0010] Preferably, there are two locking end seats, which are symmetrically fixed on the upper and lower sides of the left end face of the closing mechanism. Each locking end seat has an insertion hole inside. The mounting base is fixed on the same side of the closing mechanism. The locking push rod is fixed on one end of the mounting base near the locking end seat. The locking push rod is used to pass through the locking end seat and insert into the locking hole in the locking mechanism.

[0011] Preferably, the buffer mechanism includes a mounting base, a fixing bolt, a first piston rod, a first piston plate, a buffer pad, and a circulation pipe. The buffer mechanism is a cylindrical structure. The mounting base is fixedly mounted on the outer wall of the buffer mechanism. The fixing bolt passes through the mounting base and connects to the cabinet mechanism. The first piston rod is movably mounted inside the buffer mechanism. The first piston plate is fixedly mounted at one end of the first piston rod and located inside the buffer mechanism. The interior of the buffer mechanism is filled with inert gas for buffering. A spring is fixedly connected between the first piston plate and the buffer mechanism. This spring is used to promote the movement of the first piston plate away from the circulation pipe, i.e., for evacuating the buffer mechanism. The buffer pad is fixedly mounted at the other end of the first piston rod and is used to contact the closing mechanism when closed. The circulation pipe is fixedly mounted at one end of the buffer mechanism.

[0012] Preferably, the locking mechanism includes a diversion conduit, a second piston rod, a second piston plate, a push slide, a guide slider, a locking positioning rod, and a locking hole. The diversion conduit is fixedly disposed within the locking mechanism and connected to a circulation pipe. The second piston rod and the second piston plate are both disposed within the diversion conduit and are pushed by gas supplied in a buffer mechanism. The outer wall of the push slide is fixedly connected to a guide slider, which is slidably disposed within the locking mechanism and is pushed and moved by the second piston rod. The locking positioning rod is fixedly disposed at the front end of the push slide, and the locking hole is opened within the locking positioning rod.

[0013] This invention discloses a method for using a high-voltage switchgear with a mechanical buffer door, comprising the following steps: S1. When the closing mechanism is opened, the electromagnet of the adsorption mechanism is de-energized by the controller, which releases the adsorption limiting effect of the adsorption mechanism on the closing mechanism. The spring in the buffer mechanism is reset, pushing the first piston plate, the first piston rod and the buffer pad back to the initial position. The buffer mechanism generates negative pressure, causing the gas in the diversion conduit of the locking mechanism to flow back to the buffer mechanism through the circulation pipe. The second piston plate loses its thrust, and the second piston rod drives the sliding block and the locking positioning rod to reset. The locking push rod is disengaged from the locking hole. S2. The operator holds the grip and pulls the closing mechanism. The guide slide of the closing mechanism slides along the guide groove of the cabinet mechanism. The guide protrusion limits the offset and the guide pulley reduces friction, so that the closing mechanism can be opened smoothly. S3. When closing the closing mechanism, push the cabinet door to move the closing mechanism toward the front opening of the cabinet mechanism. The guide slide, guide protrusion and guide pulley work together to ensure smooth and precise movement. S4. When the closing mechanism moves to the adsorption mechanism, the positioning slot aligns with the adsorption mechanism, the electromagnet of the adsorption mechanism is energized to adsorb the metal piece in the positioning slot, achieving initial positioning, and at the same time the contact switch is triggered by the closing mechanism. S5. The closing mechanism continues to move and comes into contact with the buffer pad of the buffer mechanism, pushing the buffer pad, the first piston rod and the first piston plate into the buffer mechanism, compressing the internal inert gas and spring to form a buffering force. S6. The compressed inert gas in the buffer mechanism flows into the diversion pipe of the locking mechanism through the circulation pipe, pushing the second piston plate and the second piston rod to extend forward, which in turn drives the push slide and the locking positioning rod to extend synchronously. S7. When the closing mechanism completely covers the front opening of the cabinet mechanism, the locking push rod on the closing mechanism passes through the insertion hole of the locking end seat and is inserted into the locking hole of the locking positioning rod to complete the double locking of the closing mechanism. S8. During the operation of the cabinet mechanism, the cooling fan blades of the heat dissipation mechanism rotate continuously to accelerate the internal air circulation and achieve heat dissipation, while the heat dissipation filter prevents external impurities from entering.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, by setting up components such as a buffer mechanism and a locking mechanism, and through the linkage between the buffer mechanism and the locking mechanism, when the closing mechanism is closed, the buffer pad of the buffer mechanism first contacts the closing mechanism. The first piston rod drives the first piston plate to compress the internal inert gas and spring to form a buffering force. At the same time, the inert gas flows into the diversion conduit of the locking mechanism through the circulation pipe, pushing the second piston plate and the second piston rod to extend the locking positioning rod, forming a plug-in lock with the locking push rod of the closing mechanism. This allows the buffer mechanism to achieve buffering and deceleration while triggering the locking mechanism to complete double locking. This device not only avoids damage to the connecting parts and internal precision electrical components caused by the impact force generated by the inertia of the closing mechanism, but also eliminates the safety hazard of sparks generated by collisions, achieving a synchronous linkage effect of buffering and locking.

[0015] 2. In this invention, by setting up components such as an adsorption mechanism and a closing mechanism, the adsorption mechanism and the closing mechanism work together in a coordinated manner. The electromagnet structure of the adsorption mechanism adsorbs the metal piece in the positioning slot to achieve initial positioning, and at the same time triggers the contact switch to provide a signal for the subsequent linkage of the locking mechanism. The guide slide of the closing mechanism slides along the guide groove of the cabinet mechanism. The guide protrusion and guide pulley ensure smooth sliding, so that the closing mechanism can achieve precise positioning during movement and provide a stable foundation for the linkage of the buffer mechanism and the locking mechanism. This device solves the problem of poor stability of the existing switch cabinet door panel opening and closing. Compared with the traditional hinge connection structure, it does not rely on hydraulic or pneumatic components. Stable positioning and locking are achieved through the linkage of mechanical structures. The structure is simple and more durable.

[0016] 3. In this invention, by setting up components such as a heat dissipation mechanism and a cabinet mechanism, and through the functional linkage between the heat dissipation mechanism and the cabinet mechanism, the rotation of the heat dissipation fan blades of the heat dissipation mechanism accelerates the air circulation inside the cabinet mechanism, and the heat dissipation filter blocks the entry of external impurities, ensuring the operating environment of internal wiring busbars and other components. The supporting square tube and supporting partition of the cabinet mechanism ensure the stability of the overall structure and provide a stable installation foundation for components such as the heat dissipation mechanism and the buffer mechanism. This allows each mechanism to perform its function independently while forming a synergistic linkage effect. This device solves the problems of existing buffer switch cabinets being complex in structure, high in cost, difficult to maintain, and unsuitable for harsh industrial environments. Through the reasonable combination and linkage of mechanical structures, it not only ensures the reliable realization of core functions such as heat dissipation, buffering, and locking, but also reduces the difficulty of maintenance and adapts to the usage needs of various industrial scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front view of a high-voltage switchgear and method with a mechanical buffer door panel proposed in this invention after opening. Figure 2 This is a schematic diagram of the combined structure of the sealing mechanism and the adsorption mechanism of a high-voltage switchgear and method with a mechanical buffer door panel proposed in this invention. Figure 3 This is a schematic diagram of the buffer mechanism structure of a high-voltage switchgear and method with a mechanical buffer door panel proposed in this invention. Figure 4 This is a schematic diagram of the locking mechanism structure of a high-voltage switchgear and method with a mechanical buffer door panel proposed in this invention. Figure 5 This is a schematic diagram of the right side view of a high-voltage switchgear and method with a mechanical buffer door panel proposed in this invention after opening. Figure 6 This is a schematic diagram of the left side of a high-voltage switchgear and method with a mechanical buffer door proposed in this invention. Figure 7 This invention provides a high-voltage switchgear with a mechanical buffer door and a corresponding method. Figure 1 Enlarged structural diagram at point A in the middle; Figure 8 This invention provides a high-voltage switchgear with a mechanical buffer door and a corresponding method. Figure 5 Enlarged structural diagram at point B.

[0018] In the diagram: 1. Cabinet structure; 101. Supporting square tube; 1011. Supporting partition; 1012. Wiring busbar; 1013. Warning light; 1014. Guide groove; 2. Heat dissipation mechanism; 201. Heat dissipation filter; 2011. Heat dissipation fan blade; 3. Sealing mechanism; 301. Holding part; 3011. Cabinet door part; 3012. Observation window; 3013. Controller; 3014. Guide slide; 3015. Guide protrusion; 3016. Guide pulley; 4. Adsorption mechanism; 401. Contact switch; 4011. Positioning 4012, Slot; 4013, Locking end seat; 4014, Mounting base plate; 4015, Locking push rod; 5, Buffer mechanism; 501, Mounting base; 5011, Fixing bolt; 5012, First piston rod; 5013, First piston plate; 5014, Buffer pad; 5015, Circulation pipe; 6, Locking mechanism; 601, Diverting conduit; 6011, Second piston rod; 6012, Second piston plate; 6013, Push slide; 6014, Guide slider; 6015, Locking positioning rod; 6016, Locking hole. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Example, refer to Figure 1 - Figure 8 A high-voltage switchgear with a mechanical buffer door panel includes a cabinet body 1. A heat dissipation mechanism 2 is installed on the left side of the cabinet body 1 to dissipate heat from inside the cabinet body 1. A closing mechanism 3 is slidably arranged at the front end of the cabinet body 1 to cover the front opening of the cabinet body 1. An adsorption mechanism 4 is fixedly connected to the front end of the cabinet body 1 to limit the closing mechanism 3. A buffer mechanism 5 is fixedly connected to the left end face of the cabinet body 1. A locking mechanism 6 is also fixedly connected to the left side of the cabinet body 1. The locking mechanism 6 is connected to the buffer mechanism 5 and its opening and closing are controlled by the buffer mechanism 5. The locking mechanism 6 is used to double lock the closing mechanism 3. By adopting the above technical solution, the high-voltage switchgear achieves heat dissipation, sealing and shielding, limiting, buffering and double locking functions, solving the problems of no effective buffering, poor stability and safety hazards of existing switchgear door panel opening and closing.

[0021] Furthermore, the cabinet mechanism 1 includes a supporting square tube 101, a supporting partition 1011, a wiring busbar 1012, a warning light 1013, and a guide groove 1014. The supporting square tube 101 is provided in two places, and the two supporting square tubes 101 are fixedly arranged in a linear array at the bottom of the cabinet mechanism 1. The supporting partition 1011 is fixedly arranged in a linear array on the inner side of the cabinet mechanism 1. The wiring busbar 1012 is fixedly arranged on the inner side of the supporting partition 1011. The guide groove 1014 is opened on the upper and lower sides of the front end of the cabinet mechanism 1. The warning light 1013 is fixedly arranged at the top of the cabinet mechanism 1. By adopting the above technical solution, the functions of stable support of the cabinet, installation of internal components, wiring, warning, and guiding and sliding of the closing mechanism 3 are realized.

[0022] Furthermore, the heat dissipation mechanism 2 includes a heat dissipation filter 201 and a heat dissipation fan blade 2011. The main body of the heat dissipation mechanism 2 is a circular cover structure. The heat dissipation filter 201 is fixedly arranged in a linear array inside the heat dissipation mechanism 2, and the heat dissipation fan blade 2011 is rotatably arranged inside the heat dissipation filter 201. By adopting the above technical solution, the heat dissipation function of the cabinet mechanism 1 is realized, and at the same time, the heat dissipation filter 201 blocks impurities from entering.

[0023] Furthermore, the closing mechanism 3 includes a grip 301, a cabinet door 3011, an observation window 3012, a controller 3013, a guide slide 3014, a guide protrusion 3015, and a guide pulley 3016. The grip 301 is fixedly installed at the front end of the closing mechanism 3. The cabinet door 3011 is hinged to the inside of the closing mechanism 3 and locked by a mechanical lock. The observation window 3012 is embedded in the cabinet door 3011. By adopting the above technical solution, the functions of shielding the front opening of the switch cabinet, locking the cabinet door, observing the internal situation, operating and controlling, and smooth sliding of the closing mechanism 3 are realized.

[0024] Furthermore, the controller 3013 is fixedly installed at the front end of the cabinet door 3011. There are two guide slides 3014, which are symmetrically fixedly installed on the rear side of the closing mechanism 3 and slidably installed in the guide groove 1014. The guide protrusions 3015 are symmetrically fixedly installed on the outer wall of the guide slides 3014, and the guide pulleys 3016 are rotatably installed in the guide slides 3014. By adopting the above technical solution, the operation control of the equipment and the precise and smooth sliding of the closing mechanism 3 in the guide groove 1014 are realized.

[0025] Furthermore, the adsorption mechanism 4 includes a contact switch 401, a positioning slot 4011, a locking end seat 4012, a mounting base 4013, and a locking push rod 4014. The main body of the adsorption mechanism 4 is an electromagnet structure. The contact switch 401 is fixedly installed in the groove on the right side of the adsorption mechanism 4. The positioning slot 4011 opens and closes on one side of the closing mechanism 3, and a metal sheet matching the adsorption mechanism 4 is fixedly installed inside the positioning slot 4011. By adopting the above technical solution, the functions of limiting adsorption and preliminary positioning of the closing mechanism 3 are realized.

[0026] Furthermore, there are two locking end seats 4012, which are symmetrically fixed on the upper and lower sides of the left end face of the closing mechanism 3. Each locking end seat 4012 has an insertion hole. The mounting base 4013 is fixed on the same side of the closing mechanism 3. The locking push rod 4014 is fixed on the end of the mounting base 4013 near the locking end seat 4012. The locking push rod 4014 is used to pass through the locking end seat 4012 and insert into the locking hole 6016 in the locking mechanism 6. By adopting the above technical solution, the locking push rod 4014 and the locking mechanism 6 are cooperated to provide structural support for the double locking of the closing mechanism 3.

[0027] Furthermore, the buffer mechanism 5 includes a mounting base 501, a fixing bolt 5011, a first piston rod 5012, a first piston plate 5013, a buffer pad 5014, and a circulation pipe 5015. The buffer mechanism 5 has a cylindrical structure. The mounting base 501 is fixedly mounted on the outer wall of the buffer mechanism 5. The fixing bolt 5011 passes through the mounting base 501 and connects to the cabinet mechanism 1. The first piston rod 5012 is movably mounted inside the buffer mechanism 5. The first piston plate 5013 is fixedly mounted at one end of the first piston rod 5012 and located inside the buffer mechanism 5. The interior is filled with inert gas for buffering. A spring is fixedly connected between the first piston plate 5013 and the buffer mechanism 5. The spring is used to promote the first piston plate 5013 to move away from the circulation pipe 5015, that is, to pump out the air from the buffer mechanism 5. The buffer pad 5014 is fixedly installed at the other end of the first piston rod 5012 and is used to contact the closing mechanism 3 when closed. The circulation pipe 5015 is fixedly installed at one end of the buffer mechanism 5. By adopting the above technical solution, the function of buffering the closing mechanism 3 when closed and reducing the impact force is realized.

[0028] Furthermore, the locking mechanism 6 includes a diversion conduit 601, a second piston rod 6011, a second piston plate 6012, a push slide 6013, a guide slider 6014, a locking positioning rod 6015, and a locking hole 6016. The diversion conduit 601 is fixedly installed inside the locking mechanism 6 and connected to the circulation pipe 5015. The second piston rod 6011 and the second piston plate 6012 are both installed inside the diversion conduit 601 and are pushed by the gas supplied in the buffer mechanism 5. The guide slider 6014 is fixedly connected to the outer wall of the push slide 6013 and is slidably installed inside the locking mechanism 6. It is pushed and moved by the second piston rod 6011. The locking positioning rod 6015 is fixedly installed at the front end of the push slide 6013, and the locking hole 6016 is opened inside the locking positioning rod 6015. By adopting the above technical solution, the function of double locking of the sealing mechanism 3 under the control of the buffer mechanism 5 is realized, thereby improving the sealing stability and safety.

[0029] This invention discloses a method for using a high-voltage switchgear with a mechanical buffer door, comprising the following steps: S1. When the closing mechanism 3 is opened, the electromagnet of the adsorption mechanism 4 is de-energized by the controller 3013, releasing the adsorption limiting effect of the adsorption mechanism 4 on the closing mechanism 3. The spring in the buffer mechanism 5 is reset, pushing the first piston plate 5013, the first piston rod 5012 and the buffer pad 5014 back to the initial position. A negative pressure is generated inside the buffer mechanism 5, causing the gas in the diversion conduit 601 of the locking mechanism 6 to flow back to the buffer mechanism 5 through the circulation pipe 5015. The second piston plate 6012 loses its thrust, and the second piston rod 6011 drives the sliding block 6013 and the locking positioning rod 6015 to reset. The locking push rod 4014 is disengaged from the locking hole 6016. S2. The operator holds the grip 301 and pulls the closing mechanism 3. The guide slide 3014 of the closing mechanism 3 slides along the guide groove 1014 of the cabinet mechanism 1. The guide protrusion 3015 restricts the offset, and the guide pulley 3016 reduces friction, so that the closing mechanism 3 can be opened smoothly. S3. When closing the closing mechanism 3, push the cabinet door component 3011 to move the closing mechanism 3 toward the front opening of the cabinet mechanism 1. The guide slide 3014, guide protrusion 3015 and guide pulley 3016 work together to ensure smooth and precise movement. S4. When the closing mechanism 3 moves to the adsorption mechanism 4, the positioning slot 4011 is aligned with the adsorption mechanism 4. The electromagnet of the adsorption mechanism 4 is energized to adsorb the metal piece in the positioning slot 4011, achieving initial positioning. At the same time, the contact switch 401 is triggered by the closing mechanism 3. S5. The closing mechanism 3 continues to move and comes into contact with the buffer pad 5014 of the buffer mechanism 5, pushing the buffer pad 5014, the first piston rod 5012 and the first piston plate 5013 into the buffer mechanism 5, compressing the internal inert gas and spring to form a buffering force. S6. The compressed inert gas in the buffer mechanism 5 flows into the diversion conduit 601 of the locking mechanism 6 through the circulation pipe 5015, pushing the second piston plate 6012 and the second piston rod 6011 to extend forward, which in turn drives the push slide 6013 and the locking positioning rod 6015 to extend synchronously. S7. When the closing mechanism 3 completely covers the front opening of the cabinet mechanism 1, the locking push rod 4014 on the closing mechanism 3 passes through the insertion hole of the locking end seat 4012 and is inserted into the locking hole 6016 of the locking positioning rod 6015, thus completing the double locking of the closing mechanism 3. S8. During the operation of cabinet mechanism 1, the cooling fan blades 2011 of the heat dissipation mechanism 2 rotate continuously to accelerate the internal air circulation and achieve heat dissipation, while the heat dissipation filter 201 blocks external impurities from entering.

[0030] In use, when the operator opens the closing mechanism 3, by holding the grip 301, the electromagnet of the adsorption mechanism 4 is de-energized in conjunction with the controller 3013. The adsorption limiting effect of the adsorption mechanism 4 on the closing mechanism 3 is released. After the spring in the buffer mechanism 5 loses pressure, it resets and pushes the first piston plate 5013 to move away from the circulation pipe 5015. This causes the first piston rod 5012 and the buffer pad 5014 to return to their initial positions. The internal space of the buffer mechanism 5 expands, generating negative pressure. The inert gas in the diversion conduit 601 of the locking mechanism 6 flows back to the buffer mechanism 5 through the circulation pipe 5015. The gas backflow causes the first piston rod 5012 and the buffer pad 5014 in the locking mechanism 6 to... When the second piston plate 6012 loses its thrust, the second piston rod 6011 drives the push slide 6013 to slide in the opposite direction. The guide slider 6014 assists the push slide 6013 to return to its original position smoothly. The locking positioning rod 6015 retracts with the push slide 6013, and the locking push rod 4014 disengages from the locking hole 6016. The operator can then pull the grip 301 to move the closing mechanism 3. When the closing mechanism 3 moves, the guide slide 3014 slides along the guide groove 1014 of the cabinet mechanism 1. The guide protrusion 3015 restricts the sliding offset, and the guide pulley 3016 reduces the frictional resistance during the sliding process, allowing the closing mechanism 3 to open smoothly. When the operator closes the closing mechanism 3, the cabinet door component 3011 is pushed to move the closing mechanism 3 toward the front opening of the cabinet mechanism 1. The guide slide 3014, guide protrusion 3015 and guide pulley 3016 work together to ensure smooth and precise movement. When the closing mechanism 3 moves to the adsorption mechanism 4, the positioning slot 4011 is aligned with the adsorption mechanism 4. The electromagnet of the adsorption mechanism 4 is energized to generate a suction force, adsorbing the metal piece in the positioning slot 4011, thus achieving the initial limit of the closing mechanism 3. At the same time, the contact switch 401 is triggered by the closing mechanism 3, and the closing mechanism 3 continues to move and comes into contact with the buffer pad 5014 of the buffer mechanism 5, pushing the buffer pad 5014 and the first piston rod 5012 to move into the buffer mechanism 5. The first piston plate 5013 moves synchronously and compresses the inert gas and spring inside. The inert gas and spring generate a counterforce, forming a buffer force to hinder the rapid movement of the closing mechanism 3, thus achieving a buffering and deceleration effect. The compressed inert gas in the buffer mechanism 5 flows into the diversion conduit 601 of the locking mechanism 6 through the circulation pipe 5015. The gas accumulates in the diversion conduit 601 and pushes the second piston plate 6012 to move. The second piston plate 6012 drives the second piston rod 6011 to extend forward. The second piston rod 6011 pushes the slide 6013 to slide along the inside of the locking mechanism 6. The guide slider 6014 ensures that the moving direction of the slide 6013 does not deviate. The locking positioning rod 6015 extends synchronously with the slide 6013. When the closing mechanism 3 completely covers the front opening of the cabinet mechanism 1, the locking push rod 4014 on the closing mechanism 3 passes through the locking end seat 4. The 012 socket is precisely inserted into the locking hole 6016 of the locking positioning rod 6015 to achieve double locking of the sealing mechanism 3. During the operation of the cabinet mechanism 1, the cooling fan blades 2011 of the heat dissipation mechanism 2 rotate continuously, accelerating the air circulation inside the cabinet mechanism 1. Heat is dissipated with the air flow. The heat dissipation filter 201 blocks external dust and impurities from entering the cabinet mechanism 1, preventing components such as the wiring busbar 1012 from being contaminated. The supporting square tube 101 ensures the overall structural stability of the cabinet mechanism 1. The supporting partition 1011 provides support and fixation for the internal components. The warning light 1013 promptly issues a warning signal when the equipment malfunctions, reminding the operator to handle the situation. The internal components of the cabinet mechanism 1 are connected by wiring busbar 1012. The support partition 1011 divides the interior of the cabinet mechanism 1 into multiple installation areas, which facilitates the classified installation and maintenance of components. The observation window 3012 allows operators to observe the operating status of the internal components of the cabinet mechanism 1 without opening the closing mechanism 3. The cabinet door 3011 is further locked by a mechanical lock, which improves the sealing reliability of the closing mechanism 3 and prevents unauthorized personnel from opening it.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-voltage switchgear with a mechanical buffer door, comprising a cabinet mechanism (1), characterized in that, A heat dissipation mechanism (2) is installed on the left side of the cabinet mechanism (1). The heat dissipation mechanism (2) is used to dissipate heat from the inside of the cabinet mechanism (1). A closing mechanism (3) is slidably provided at the front end of the cabinet mechanism (1). The closing mechanism (3) is used to cover the front opening of the cabinet mechanism (1). An adsorption mechanism (4) is fixedly connected to the front end of the cabinet mechanism (1). The adsorption mechanism (4) is used to limit the closing mechanism (3). A buffer mechanism (5) is fixedly connected to the left end face of the cabinet mechanism (1). A locking mechanism (6) is also fixedly connected to the left side of the cabinet mechanism (1). The locking mechanism (6) is connected to the buffer mechanism (5) and controls the opening and closing through the buffer mechanism (5). The locking mechanism (6) is used to double lock the closing mechanism (3).

2. A high-voltage switchgear with a mechanical buffer door as described in claim 1, characterized in that, The cabinet mechanism (1) includes a supporting square tube (101), a supporting partition (1011), a wiring busbar (1012), a warning light (1013), and a guide groove (1014). The supporting square tube (101) is provided in two places, and the two supporting square tubes (101) are fixedly arranged in a linear array at the bottom end of the cabinet mechanism (1). The supporting partition (1011) is fixedly arranged in a linear array on the inner side of the cabinet mechanism (1). The wiring busbar (1012) is fixedly arranged on the inner side of the supporting partition (1011). The guide groove (1014) is opened on the upper and lower sides of the front end of the cabinet mechanism (1). The warning light (1013) is fixedly arranged at the top end of the cabinet mechanism (1).

3. A high-voltage switchgear with a mechanical buffer door as described in claim 1, characterized in that, The heat dissipation mechanism (2) includes a heat dissipation filter (201) and a heat dissipation fan blade (2011). The main body of the heat dissipation mechanism (2) is a circular cover structure. The heat dissipation filter (201) is fixedly arranged in a linear array inside the heat dissipation mechanism (2). The heat dissipation fan blade (2011) is rotatably arranged inside the heat dissipation filter (201).

4. A high-voltage switchgear with a mechanical buffer door as described in claim 1, characterized in that, The closing mechanism (3) includes a grip (301), a cabinet door (3011), an observation window (3012), a controller (3013), a guide slide (3014), a guide protrusion (3015), and a guide pulley (3016). The grip (301) is fixedly installed at the front end of the closing mechanism (3). The cabinet door (3011) is hinged to the inside of the closing mechanism (3) and locked by a mechanical lock. The observation window (3012) is embedded in the cabinet door (301).

5. A high-voltage switchgear with a mechanical buffer door as described in claim 4, characterized in that, The controller (3013) is fixedly installed at the front end of the cabinet door component (3011). There are two guide slides (3014). The two guide slides (3014) are symmetrically fixedly installed on the rear side of the closing mechanism (3) and slidably installed in the guide groove (1014). The guide protrusions (3015) are symmetrically fixedly installed on the outer wall of the guide slide (3014). The guide pulley (3016) is rotatably installed in the guide slide (3014).

6. A high-voltage switchgear with a mechanical buffer door as described in claim 1, characterized in that, The adsorption mechanism (4) includes a contact switch (401), a positioning slot (4011), a locking end seat (4012), a mounting base (4013), and a locking push rod (4014). The main body of the adsorption mechanism (4) is an electromagnet structure. The contact switch (401) is fixedly installed in the groove on the right side of the adsorption mechanism (4). The positioning slot (4011) opens and closes on one side of the closing mechanism (3), and a metal sheet matching the adsorption mechanism (4) is fixedly installed inside the positioning slot (4011).

7. A high-voltage switchgear with a mechanical buffer door as described in claim 6, characterized in that, There are two locking end seats (4012). The two locking end seats (4012) are symmetrically fixed on the upper and lower sides of the left end face of the closing mechanism (3). The locking end seats (4012) are provided with insertion holes. The mounting base (4013) is fixed on the same side of the closing mechanism (3). The locking push rod (4014) is fixed on the end of the mounting base (4013) near the locking end seat (4012). The locking push rod (4014) is used to pass through the locking end seat (4012) and insert into the locking hole (6016) in the locking mechanism (6).

8. A high-voltage switchgear with a mechanical buffer door as described in claim 1, characterized in that, The buffer mechanism (5) includes a mounting base (501), a fixing bolt (5011), a first piston rod (5012), a first piston plate (5013), a buffer pad (5014), and a circulation pipe (5015). The buffer mechanism (5) is a cylindrical structure. The mounting base (501) is fixedly installed on the outer wall of the buffer mechanism (5). The fixing bolt (5011) passes through the mounting base (501) and connects to the cabinet mechanism (1). The first piston rod (5012) is movably installed inside the buffer mechanism (5). The first piston plate (5013) is fixedly installed on the first piston rod (5012). One end of the first piston rod (5012) is located inside the buffer mechanism (5), which is filled with inert gas for buffering. A spring is fixedly connected between the first piston plate (5013) and the buffer mechanism (5). The spring is used to promote the first piston plate (5013) to move away from the circulation pipe (5015), that is, to pump out the air from the buffer mechanism (5). The buffer pad (5014) is fixedly installed at the other end of the first piston rod (5012) and is used to contact the closing mechanism (3) when closed. The circulation pipe (5015) is fixedly installed at one end of the buffer mechanism (5).

9. A high-voltage switchgear with a mechanical buffer door as described in claim 1, characterized in that, The locking mechanism (6) includes a diversion conduit (601), a second piston rod (6011), a second piston plate (6012), a push slide (6013), a guide slider (6014), a locking positioning rod (6015), and a locking hole (6016). The diversion conduit (601) is fixedly installed in the locking mechanism (6) and connected to the circulation pipe (5015). The second piston rod (6011) and the second piston plate (6012) are both installed in the diversion conduit (601) and pushed by the gas supplied in the buffer mechanism (5). The outer wall of the push slide (6013) is fixedly connected to the guide slider (6014) and slidably installed in the locking mechanism (6). It is pushed and moved by the second piston rod (6011). The locking positioning rod (6015) is fixedly installed at the front end of the push slide (6013). The locking hole (6016) is opened in the locking positioning rod (6015).

10. A method for a high-voltage switchgear with a mechanical buffer door according to any one of claims 1-9, characterized in that, Includes the following steps: S1. When the closing mechanism (3) is opened, the electromagnet of the adsorption mechanism (4) is de-energized by the controller (3013), the adsorption mechanism (4) releases the adsorption limiting effect on the closing mechanism (3), the spring in the buffer mechanism (5) is reset, and the first piston plate (5013), the first piston rod (5012) and the buffer pad (5014) are pushed back to the initial position. The buffer mechanism (5) generates negative pressure, so that the gas in the diversion conduit (601) of the locking mechanism (6) flows back to the buffer mechanism (5) through the circulation pipe (5015). The second piston plate (6012) loses its thrust, and the second piston rod (6011) drives the push slide (6013) and the locking positioning rod (6015) to reset. The locking push rod (4014) is disengaged from the locking hole (6016). S2. The operator holds the grip (301) and pulls the closing mechanism (3). The guide slide (3014) of the closing mechanism (3) slides along the guide groove (1014) of the cabinet mechanism (1). The guide protrusion (3015) restricts the offset, and the guide pulley (3016) reduces friction, so that the closing mechanism (3) can be opened smoothly. S3. When closing the closing mechanism (3), push the cabinet door component (3011) to drive the closing mechanism (3) to move towards the front opening of the cabinet mechanism (1). The guide slide (3014), guide protrusion (3015) and guide pulley (3016) work together to ensure smooth and accurate movement. S4. When the closing mechanism (3) moves to the adsorption mechanism (4), the positioning slot (4011) is aligned with the adsorption mechanism (4), the electromagnet of the adsorption mechanism (4) is energized to adsorb the metal piece in the positioning slot (4011) to achieve initial positioning, and at the same time the contact switch (401) is triggered by the closing mechanism (3). S5. The closing mechanism (3) continues to move and comes into contact with the buffer pad (5014) of the buffer mechanism (5), pushing the buffer pad (5014), the first piston rod (5012) and the first piston plate (5013) into the buffer mechanism (5), compressing the internal inert gas and spring to form a buffering force. S6. The compressed inert gas in the buffer mechanism (5) flows into the diversion pipe (601) of the locking mechanism (6) through the circulation pipe (5015), pushing the second piston plate (6012) and the second piston rod (6011) to extend forward, and driving the push slide (6013) and the locking positioning rod (6015) to extend synchronously. S7. When the closing mechanism (3) completely covers the front opening of the cabinet mechanism (1), the locking push rod (4014) on the closing mechanism (3) passes through the insertion hole of the locking end seat (4012) and is inserted into the locking hole (6016) of the locking positioning rod (6015) to complete the double locking of the closing mechanism (3). S8. During the operation of the cabinet mechanism (1), the heat dissipation fan blades (2011) of the heat dissipation mechanism (2) rotate continuously to accelerate the internal air circulation and achieve heat dissipation, while the heat dissipation filter (201) blocks external impurities from entering.

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