Isolating switch operating mechanism with quick tripping function and operating method thereof

Abstract

The invention discloses an isolating switch operating mechanism with a quick tripping function and an operating method thereof, and relates to the technical field of isolating switches. The isolating switch operating mechanism with the quick tripping function comprises a shell, a connecting rod mechanism and a handle shaft assembly, and the handle shaft assembly is configured to transmit rotating force of an operating handle to the connecting rod mechanism. According to the disconnecting switch operating mechanism with the quick tripping function and the operating method thereof, the rotating force of the operating handle is transmitted to the connecting rod mechanism by arranging the handle shaft assembly, so that the connecting rod mechanism drives the switch body to be switched off or switched on, and the requirement of a rotating operation mode of the disconnecting switch can be met; and the lock catch of the connecting rod mechanism is buckled with the jump pin.

Description

Technical Field

[0001] The present invention relates to the technical field of isolating switches, in particular to an isolating switch operating mechanism with a quick tripping function and an operating method thereof. Background Art

[0002] An isolating switch is a device that isolates the power-off part from the live part and creates an obvious disconnection point to isolate the faulty equipment or perform power outage maintenance. When the electrical equipment is out of power for maintenance, the equipment under maintenance is isolated from the power supply to form an obvious disconnection point to avoid safety accidents. With the rapid development of the photovoltaic industry, the demand for intelligent photovoltaic inverters is getting higher and higher. Photovoltaic isolating switches are mainly used to control the current flow between photovoltaic panels and inverters, and play an important role in the safe operation of the system. When a fault occurs in the photovoltaic system, the photovoltaic isolating switch can quickly cut off the power and protect the inverter and panels from current damage.

[0003] Existing ordinary isolating switches are mainly used to isolate power supplies and to connect and disconnect low-current circuits. As line protective switching devices, the operating mechanisms of ordinary isolating switches do not have the functions of rapid power-off and protection, that is, line fault tripping. Therefore, the application of ordinary isolating switch operating mechanisms in photovoltaic power generation systems is limited. Therefore, it is very necessary to design an isolating switch operating mechanism that can meet the requirements of photovoltaic power generation systems. Summary of the Invention

[0004] The object of the present invention is to provide an isolating switch operating mechanism with a rapid tripping function and an operating method thereof, so as to solve the problems raised in the above-mentioned background technology by rapid closing and opening of the switch.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an isolating switch operating mechanism with a quick-tripping function, comprising a shell, a connecting rod mechanism, and a handle shaft assembly, wherein the handle shaft assembly is configured to transmit the rotational force of the operating handle to the connecting rod mechanism, so that the connecting rod mechanism drives the switch body to open or close, the connecting rod mechanism comprising a mechanism frame, a lever, a trip latch, an upper connecting rod, a lower connecting rod, and a driving member, wherein a connecting rod shaft is connected between the upper connecting rod and the lower connecting rod, the lever is rotatably arranged on the mechanism frame and linked with the handle shaft assembly, a main spring is connected between the lever and the connecting rod shaft, the trip latch is rotatably arranged on the mechanism frame, an upper connecting shaft is connected between the upper connecting rod and the trip latch, a lower connecting shaft is connected between the lower connecting rod and the driving member, a lock buckle that cooperates with the trip latch is rotatably arranged on the mechanism frame, and the driving member is rotatably arranged on the mechanism frame, and the driving member is configured to transmit the driving force of the lower connecting rod to the main shaft of the switch body, so that the switch body performs an opening or closing action.

[0006] Preferably, the handle shaft assembly includes a handle shaft and a slider slidably arranged in a shell, the slider cooperates with the lever and causes the lever to rotate on the mechanism frame, one end of the handle shaft has a rotating shaft portion extending outside the shell and connected to the operating handle, the other end of the handle shaft is provided with a driving gear, the slider has a rack portion meshing with the driving gear, two toggle grooves are provided on both sides of the slider, two toggle rods cooperating with the two toggle grooves are provided on both sides of the lever, the two toggle rods are inserted in the two toggle grooves and constitute a linkage cooperation between the two toggle rods and the slider, two guide posts are symmetrically arranged in the shell, two guide holes cooperating with the two guide posts are provided on the slider, the two guide posts are respectively inserted in the two guide holes and constitute a sliding connection between the slider and the two guide posts, the shell includes a bottom shell and a cover body, positioning grooves are provided in the bottom shell corresponding to the two ends of the two guide posts, the two ends of the two guide posts are respectively placed in the positioning grooves, the cover body covers the bottom shell and is connected by fasteners, and the cover body presses the two ends of the two guide posts into the positioning grooves.

[0007] Preferably, one end of the jump buckle has a locking piece that cooperates with the lock buckle, and the lock buckle is provided with a locking groove that cooperates with the locking piece, the locking piece is buckled in the locking groove, and constitutes a limiting cooperation between the locking piece and the locking groove, a reset tension spring is provided between the other end of the jump buckle and the mechanism frame, and a lock buckle pressure plate is rotatably provided on the mechanism frame corresponding to the side of the lock buckle, and a torsion spring that cooperates with the lock buckle pressure plate is provided on the lock buckle, and the lock buckle pressure plate cooperates with the torsion spring to keep the lock buckle and the jump buckle in a buckled state, and a positioning rod is provided on the lock buckle, and the torsion spring is sleeved on the positioning rod, the first torsion arm of the torsion spring contacts the lock buckle, and the second torsion arm of the torsion spring contacts the lock buckle pressure plate.

[0008] Preferably, the lever is provided with a toggle plate for driving the jump buckle action, and the toggle plate transmits the driving force of the lever to the jump buckle, so that the jump buckle and the lock buckle perform a buckling action, and the middle part of the jump buckle is provided with an arc-shaped raised portion that cooperates with the toggle plate.

[0009] Preferably, the mechanism frame and the jump buckle are movably connected through a connecting rod, and a connecting ring is fixedly installed inside the jump buckle on a side away from the mechanism frame, and a rotating rod is movably connected inside the connecting rod, and two symmetrical fixing pins are fixed on the outer wall of one end of the rotating rod away from the connecting rod, and a delivery pipe is fixedly installed on the side of the connecting rod, and an air storage box is provided on the top of the connecting rod, and the outer wall of the air storage box on the side away from the jump buckle is fixedly connected to the outer wall of the mechanism frame, and two symmetrical intake pipes and exhaust pipes are fixed inside one side of the air storage box, and a pull-out rod is movably connected inside the side of the air storage box away from the intake pipe, and a connecting piece is fixedly installed on the outer wall of the pull-out rod, and the outer wall of the connecting piece is fixedly connected to the outer wall of the jump buckle.

[0010] Preferably, a movable circular opening is provided inside the connecting rod, a rotating shaft is fixedly installed inside the movable circular opening, a heat dissipation rod is movably sleeved inside the rotating shaft, a transverse groove is provided inside the heat dissipation rod, and L-shaped connecting grooves are provided at both ends of the transverse groove, wherein the outlet of the connecting groove at the end of the jump buckle away from the rotating shaft extends to the side of the rotating rod, and a ring groove is provided on the circumferential outer wall of the heat dissipation rod, the interior of the ring groove and the interior of the transverse groove are connected to each other, and a reset torsion spring is also sleeved on the outer wall of the transverse groove, and the end of the ring groove away from the rotating shaft is fixedly connected to the rotating rod, an extension cavity is provided inside the connecting ring, and a clamping cavity is provided inside both sides of the extension cavity, and the interior of the clamping cavity and the outer wall of the fixing pin are adapted to each other.

[0011] Preferably, an expansion cavity is provided inside the intake pipe and the exhaust pipe, a partition is fixedly installed inside the expansion cavity, a flow cavity is provided inside the partition, a movable sleeve rod is movably sleeved inside the flow cavity, one end of the movable sleeve rod is fixedly connected to a sealing plate, the outer wall of the sealing plate is fitted with the top of the flow cavity, an extrusion plate is fixedly installed on the end of the movable sleeve rod away from the sealing plate, a cross bar is movably sleeved on the outer wall of the end of the movable sleeve rod close to the extrusion plate, a spring is provided between the extrusion plate and the cross bar, and the outer wall of the spring and the outer wall of the movable sleeve rod are intertwined with each other, a throat is connected to the side of the expansion cavity, a narrow cavity is connected to the side of the throat, a guide cover is fixedly installed on the side of the throat close to the expansion cavity, an air intake channel is provided on the side of the intake pipe, and the interior of the air intake channel and the interior of the throat are connected to each other.

[0012] Preferably, guide blades are fixedly connected to the interior of the guide cover, and the angles on both sides of the guide blades range from forty to forty-five degrees.

[0013] Preferably, an air storage cavity is provided inside the air storage box, a damping plug is movably sleeved inside the air storage cavity, and a side of the damping plug away from the air inlet pipe and the exhaust pipe is fixedly connected to a pulling rod.

[0014] Preferably, the method comprises the following steps: Step 1: Confirm the initial status. Before performing any operation, check the connection of each component of the isolating switch operating mechanism to ensure that the handle shaft assembly, the mechanism frame in the connecting rod mechanism, the lever, the trip buckle, the upper connecting rod, the lower connecting rod, the driving part and the lock buckle are firmly connected without any looseness. At the same time, confirm that the lock buckle and the trip buckle are in a normal engagement state, the springs are not deformed or damaged, and the entire operating mechanism is in the initial preparation state.

[0015] Step 2: The closing operation is executed. Turn the operating handle, and the handle shaft rotates accordingly. The driving gear on the handle shaft drives the slider to slide in the housing. The toggle slots on both sides of the slider drive the toggle rods on both sides of the lever, causing the lever to rotate around the mechanism frame. The lever pulls the connecting rod shaft through the main spring, and the main spring begins to store energy. As the lever continues to rotate, the connecting rod shaft drives the upper connecting rod and the lower connecting rod to rotate. When the main spring passes the dead point, the main spring releases energy. The connecting rod shaft drives the driving part to rotate rapidly with the help of the upper connecting rod and the lower connecting rod. The driving part transmits the driving force to the main shaft of the switch body, causing the switch body to perform the closing action.

[0016] Step 3: Prepare for reclosing after a fault. If a line fault causes the operating mechanism to trip and open, when preparing to reclose after eliminating the fault, the toggle piece on the lever interacts with the arc-shaped raised part in the middle of the tripping buckle. When the lever rotates, the toggle piece drives the arc-shaped raised part, driving the tripping buckle to move, so that the tripping buckle and the lock buckle are re-engaged, thereby preparing for the closing operation again and ensuring that the operating mechanism can return to normal working state.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This type of disconnector operating mechanism with a quick-trip function and its operating method, by providing a handle shaft assembly to transmit the rotational force of the operating handle to the connecting rod mechanism, so that the connecting rod mechanism drives the switch body to open or close, thereby meeting the requirements of the disconnector's rotary operation mode. The lock and trip latch of the connecting rod mechanism are engaged. When a line fault occurs, the lock and trip latch can quickly trip, achieving quick tripping and opening of the operating mechanism, thereby protecting equipment and lines from damage. When closing the switch, the operating handle is rotated, and the operating handle drives the lever to rotate through the handle shaft assembly. The lever pulls the connecting rod shaft through the main spring to activate the main spring to start storing energy. The connecting rod shaft drives the upper and lower connecting rods to rotate. When the main spring passes the dead point, the main spring releases energy, and the connecting rod shaft drives the driver to quickly operate through the upper and lower connecting rods. The driver drives the main shaft of the switch body to operate, achieving quick closing of the switch body, thereby improving the disconnecting capacity of the operating mechanism.

[0018] 2. This type of disconnector operating mechanism with a quick trip function and its operating method are used in combination with a rotating rod and an air storage box. When the switch is closed normally, the reset torsion spring is pre-twisted to store elastic potential energy, maintaining the stable engagement between the trip button and the lock button. When a line fault occurs, the electromagnetic tripper drives the trip button to rotate, the torsion angle of the reset torsion spring increases, and the potential energy further accumulates. When the engagement between the two is broken, the reset torsion spring instantly releases a large amount of elastic potential energy, which is converted into kinetic energy for the rotation of the trip button, achieving quick tripping. At the same time, the tripping movement of the trip button drives the connector, the pull rod, and the damping plug to allow the air storage box to inhale air through the intake pipe, and exhaust air through the exhaust pipe when resetting. The resistance generated by the intake and exhaust of the intake and exhaust pipes effectively suppresses the swing of the trip button. The sealing plate inside the intake pipe cooperates with the partition and the flow cavity, the guide vanes inside the guide cover subdivide the airflow, and the air supply design of the intake channel ensures stable and efficient intake and exhaust. In addition, the various components of the operating mechanism are closely linked, and the tripping trigger signal can be accurately transmitted to the tripper in the event of a fault, ensuring that it responds in time to complete the tripping action, and comprehensively guaranteeing the timeliness, stability and reliability of the disconnector tripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of an isolating switch according to a new embodiment of the present invention; Figure 2 This is a three-dimensional diagram of a new embodiment of the present invention; Figure 3 A cross-sectional view of a novel embodiment of the present invention; Figure 4 A three-dimensional diagram of a connecting rod mechanism according to a novel embodiment of the present invention; Figure 5 Schematic diagram of the structure inside the jump buckle of the present invention; Figure 6 This is a schematic diagram of the structure of the machine frame connection in the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure at A in the middle; Figure 8 Schematic diagram of the overall internal structure of the connecting ring; Figure 9 It is a structural diagram of the connection between the connecting rod and the rotating rod; Figure 10 for Figure 9 Schematic diagram of the enlarged structure at B in the middle; Figure 11 Schematic diagram of the two-dimensional cross-sectional structure of the exhaust pipe and the intake pipe; Figure 12 Schematic diagram of the overall internal structure of the air deflector; Figure 13 Schematic diagram of the overall internal structure of the gas storage box.

[0020] 1. Figure 10, housing; 11, connecting member; 20, connecting rod mechanism; 21, mechanism frame; 22, lever; 221, toggle lever; 222, toggle plate; 23, trip button; 230, reset spring; 231, locking plate; 281, locking groove; 24, upper connecting rod; 25, lower connecting rod; 26, driving member; 27, main spring; 28, lock button; 280, torsion spring; 2811, positioning rod; 29, lock button pressure plate; 30, handle shaft assembly; 31, handle shaft; 311, rotating shaft; 32, slider; 321, rack; 322, toggle groove; 323, guide hole; 33, driving gear; 34, guide column; 40, switch body; 101, bottom shell; 1011, positioning groove; 102, cover; 201, connecting rod shaft; 202, upper connecting rod Shaft; 203, lower connecting shaft; 232, cambered raised portion; 4, connecting ring; 5, connecting rod; 6, rotating rod; 7, fixing pin; 8, delivery pipe; 9, air storage box; 1001, pulling rod; 12, air intake pipe; 13, exhaust pipe; 41, extension cavity; 42, snap-fit ​​cavity; 51, movable circular opening; 52, rotating shaft; 53, transverse groove; 54, annular groove; 55, reset torsion spring; 56, heat dissipation rod; 121, expansion cavity; 122, partition; 123, flow cavity; 124, sealing plate; 15, movable sleeve rod; 126, spring; 1261, cross bar; 127, extrusion plate; 129, air intake channel; 1210, air guide cover; 1211, throat; 1212, narrow cavity; 1213, guide vane; 91, air storage cavity; 92, damping plug. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 4The present invention provides a technical solution for an isolating switch operating mechanism with a quick trip function and an operating method thereof: an isolating switch operating mechanism with a quick trip function, mainly composed of a housing 10, a connecting rod mechanism 20, and a handle shaft assembly 30, which is used to drive a switch body 40 to perform an opening or closing operation. The handle shaft assembly 30 includes a handle shaft 31 and a slider 32. The rotating shaft portion 311 at one end of the handle shaft 31 extends out of the housing 10 for connecting to an operating handle; the other end is provided with a driving gear 33 The slider 32 is located in the housing 10 and has a rack portion 321 that meshes with the drive gear 33. At the same time, two toggle grooves 322 are set on both sides of the slider 32, which are interlaced with the toggle rods 221 on both sides of the lever 22 to achieve linkage between the two, convenient assembly and reliable transmission. In addition, two guide columns 34 are symmetrically set in the housing 10. The slider 32 slides with the guide columns 34 through two guide holes 323 to ensure that the slider 32 moves stably in the housing 10. The housing 10 is composed of a bottom shell 101 and a cover body 102. The corresponding guide columns in the bottom shell 101 There are positioning grooves 1011 at both ends of 34, and the two ends of the guide column 34 are placed therein. The cover body 102 covers the bottom shell 101 and is connected by fasteners, pressing the two ends of the guide column 34 to facilitate the assembly of the guide column 34 and the shell 10. The connecting rod mechanism 20 includes a mechanism frame 21, a lever 22, a jump buckle 23, an upper connecting rod 24, a lower connecting rod 25, and a driving member 26. The upper connecting rod 24 and the lower connecting rod 25 are connected by a connecting rod shaft 201. The lever 22 is rotatably mounted on the mechanism frame 21 and linked with the handle shaft assembly 30. The main spring 27 is connected between the lever 22 and the connecting rod shaft 201. The upper connecting rod 24 is connected to the jumper 23 through the upper connecting shaft 202, and the lower connecting rod 25 is connected to the driving member 26 through the lower connecting shaft 203. The driving member 26 is a driving gear 33, which meshes with the transmission gear on the main shaft of the switch body 40, and transmits the driving force of the lower connecting rod 25 to the main shaft of the switch body 40 to realize the opening and closing action. The locking piece 231 at one end of the jumper 23 is buckled with the locking groove 281 of the lock buckle 28, and a reset tension spring 230 is set between the other end and the mechanism frame 21 to ensure the buckling. Reliable, when tripped, the reset tension spring 230 accelerates the action of the tripping buckle 23, and a lock buckle pressure plate 29 is provided on the mechanism frame 21 corresponding to one side of the lock buckle 28, and the torsion spring 280 on the lock buckle 28 is sleeved on the positioning rod 2811. The first torsion arm of the torsion spring 280 abuts the lock buckle 28, and the second torsion arm abuts the lock buckle pressure plate 29, so that the lock buckle 28 and the tripping buckle 23 remain in a buckled state. A toggle piece 222 is provided on the lever 22, which cooperates with the arc-shaped raised portion 232 in the middle of the tripping buckle 23 to drive the tripping buckle 23 to move; During operation, rotating the operating handle drives the handle shaft 31 to rotate, and the driving gear 33 drives the slider 32 to slide, thereby driving the lever 22 to rotate. The lever 22 pulls the connecting rod shaft 201 through the main spring 27. The main spring 27 stores energy and then releases energy to drive the driving member 26, driving the switch body 40 to close. When a line fault occurs, the lock 28 and the trip buckle 23 are disengaged to achieve rapid opening; after the fault is eliminated, the toggle piece 222 of the lever 22 drives the trip buckle 23 to re-engage with the lock 28 to close the circuit breaker again. This operating mechanism meets the requirements of the rotary operation of the disconnector, and can quickly trip the circuit breaker to protect the equipment and lines in the event of a fault. It can achieve rapid closing when closing the circuit breaker, thereby improving the breaking capacity.

[0023] Please refer to Figure 6-13. The mechanism frame 21 and the jump button 23 are movably connected by the connecting rod 5. The jump button 23 is fixedly installed with a connecting ring 4 on the side away from the mechanism frame 21. The interior of the connecting rod 5 is movably connected with a rotating rod 6. Two symmetrical fixing pins 7 are fixed to the outer wall of the end of the rotating rod 6 away from the connecting rod 5. A delivery pipe 8 is fixedly installed on the side of the connecting rod 5. A gas storage box 9 is provided on the top of the connecting rod 5. The outer wall of the gas storage box 9 on the side away from the jump button 23 is fixedly connected to the outer wall of the mechanism frame 21. One side of the gas storage box 9 is fixed inside. Two symmetrical intake pipes 12 and exhaust pipes 13 are fixed. A pull rod 1001 is movably sleeved on the side of the air storage box 9 away from the intake pipe 12. The outer wall of the pull rod 1001 is fixedly installed with a connecting piece 11. The outer wall of the connecting piece 11 is fixedly connected to the outer wall of the jump buckle 23. A movable circular opening 51 is opened inside the connecting rod 5. A rotating shaft 52 is fixedly installed inside the movable circular opening 51. A heat dissipation rod 56 is movably sleeved inside the rotating shaft 52. A transverse groove 53 is opened inside the heat dissipation rod 56. L is opened at both ends of the transverse groove 53. shaped connecting groove, wherein the outlet of the connecting groove at one end of the jump buckle 23 away from the rotating shaft 52 extends to the side of the rotating rod 6, and the circumferential outer wall of the heat dissipation rod 56 is provided with an annular groove 54, the interior of the annular groove 54 and the interior of the transverse groove 53 are communicated with each other, and the outer wall of the transverse groove 53 is also sleeved with a reset torsion spring 55, and the end of the annular groove 54 away from the rotating shaft 52 is fixedly connected to the rotating rod 6, and an extension cavity 41 is provided inside the connecting ring 4, and a clamping cavity 42 is provided inside both sides of the extension cavity 41. The interior of the air inlet pipe 12 and the outer wall of the fixed pin 7 are adapted to each other, and an expansion cavity 121 is provided inside the air inlet pipe 12 and the exhaust pipe 13. A partition 122 is fixedly installed inside the expansion cavity 121, and a flow cavity 123 is provided inside the partition 122. The interior of the flow cavity 123 is movably sleeved with a movable sleeve rod 15, and one end of the movable sleeve rod 15 is fixedly connected to a sealing plate 124. The outer wall of the sealing plate 124 is fitted with the top of the flow cavity 123, and the movable sleeve rod 15 is away from the sealing plate 124. The end of the expansion chamber 121 is fixedly installed with an extrusion plate 127, and the outer wall of the movable sleeve rod 15 near the extrusion plate 127 is movably sleeved with a cross bar 1261. A spring 126 is provided between the extrusion plate 127 and the cross bar 1261, and the outer wall of the spring 126 and the outer wall of the movable sleeve rod 15 are intertwined with each other. The side of the expansion chamber 121 is connected with a throat pipe 1211, and the side of the throat pipe 1211 is connected with a narrow cavity 1212. A guide cover 1210 is fixedly installed on the side of the throat pipe 1211 near the expansion chamber 121. An air intake passage 129 is defined on the side of the air pipe 12. The interior of the air intake passage 129 communicates with the interior of the throat pipe 1211. A guide vane 1213 is fixedly connected to the interior of the air guide cover 1210. The angles of the guide vanes 1213 on both sides range from 40 to 45 degrees. An air storage chamber 91 is defined within the air storage box 9. A damping plug 92 is movably sleeved within the air storage chamber 91. The side of the damping plug 92 away from the air intake pipe 12 and the exhaust pipe 13 is fixedly connected to a pull rod 1001. When the switch is normally closed, the trip button 23 and the lock button 28 remain engaged. At this time, the rotating rod 6 will rotate inside the movable circular opening 51, and at the same time, the reset torsion spring 55 connected to the heat dissipation rod 56 fixedly connected to the side of the rotating rod 6 is in a certain pre-twisted state, storing elastic potential energy. The torque generated by the torque makes the trip button 23 tend to maintain its current position, ensuring that the entire operating mechanism is stably in the closed state. When a line fault occurs and an abnormal condition such as a short-circuit current is generated, the electromagnetic release associated with it will be activated, and the driving force generated by the trip trigger device will act on the trip button 23. Since the trip button 23 is connected to the mechanism frame 21 through the rotating rod 6 and the reset torsion spring 55 is sleeved on the side of the rotating rod 6, when it is driven by the trip trigger device, the trip button 23 begins to drive the rotating rod 6 to rotate. As the trip button 23 rotates, the torsion angle of the reset torsion spring 55 is further increased, and the stored elastic potential energy is also further increased. When the trip button 23 rotates to a certain angle, its engagement with the lock button 28 is broken, and the lock button 28 Under the combined action of the torque of the reset torsion spring 55 and the electromagnetic release, the trip button 23 is quickly separated from the trip button 23. At the same time, the large amount of elastic potential energy stored in the reset torsion spring 55 is released instantly and converted into kinetic energy for the rapid rotation of the trip button 23, so that the trip button 23 completes the tripping action at a faster speed and realizes rapid tripping. After rapid tripping, the moving contact of the disconnector is quickly separated from the static contact, cutting off the circuit, thereby protecting the line and equipment from damage by the fault current. Afterwards, when the fault is eliminated and the circuit breaker needs to be reclosed, the operating mechanism is reset by external operation, the trip button 23 is engaged with the lock again, and the reset torsion spring 55 is restored to its initial pre-twisted state, preparing for the next possible tripping action. When the trip button 23 is in the engaged state, once a tripping action is required, the trip button 23 starts to move. At this time, the connecting piece 11 connected to the outer wall of the trip button 23 will move accordingly, thereby driving the pull rod 1001 to be withdrawn from the inside of the gas storage box 9. Since the pull rod 1001 is fixedly connected to the damping plug 92, the damping plug 92 will also follow the pull rod 10 01 moves together. It should be noted here that the pulling rod 1001 and the gas box 9 are movably connected on one side, and the damping plug 92 is limited in the gas storage cavity 91 of the gas box 9 and will not break away from it. In addition, at the end of the gas box 9 away from the pulling rod 1001, two symmetrical intake pipes 12 and exhaust pipes 13 are fixedly installed. When the damping plug 92 moves to one side with the pulling rod 1001, the gas box 9 will inhale through the inside of the intake pipe 12, and when the jump button 23 cancels the buckle, it starts to reset. When the trip button 23 is released, it pushes the connecting piece 11, thereby causing the pulling rod 1001 to move toward the inside of the gas storage box 9. At this time, the damping plug 92 fixedly connected to the pulling rod 1001 will discharge the previously inhaled gas through the exhaust pipe 13. The resistance generated by the suction and exhaust process can effectively prevent the trip button 23 from swinging left and right due to the force generated by other resets during the disengagement process, thereby ensuring the stability and reliability of the trip button 23 tripping action. The intake pipe 12 assumes the suction function.The exhaust pipe 13 is responsible for exhaust. The internal parts of the two are the same but arranged in opposite directions. The suction and related reset process of the intake pipe 12 are described in detail below. When the jump button 23 acts, it drives the connecting piece 11, the pulling rod 1001 and the damping plug 92 to move, prompting the air storage box 9 to inhale air through the intake pipe 12, a series of precise actions occur in sequence. In the internal structure of the intake pipe 12, the sealing plate 124 is in contact with the partition 122 under normal conditions, tightly sealing the top of the flow chamber 123. The suction force generated by the intake air will cause the sealing plate 124 to move upward and break away from the contact with the partition 122. At this time, the top of the flow chamber 123 is opened, and the gas is able to enter, first entering the narrow cavity 1212. In the narrow cavity 1212, due to the gradual narrowing of the space, the gas is compressed. The compressed gas then flows through the throat pipe 1211. A guide cover 1210 is provided inside the throat pipe 1211. The guide vane 1213 inside the guide cover 1210 has an angle of 40 to 45 degrees with the gas flow direction. This special angle can subdivide the airflow, and the subdivided airflow enters the expansion chamber 121, where the gas pressure is buffered and adjusted, and then smoothly enters the air storage chamber 91 through the flow chamber 123 to complete the air inhalation process. It is worth noting that the bottom of the sealing plate 124 is fixedly connected to the movable sleeve rod 15, and the bottom of the movable sleeve rod 15 passes through the cross bar 1261, and its end is fixedly connected to the extrusion plate 127. It can be clearly seen from Figure 12 that a spring 126 is provided between the cross bar 1261 and the extrusion plate 127. When the sealing plate 124 moves upward by the suction force, the extrusion plate 127 is driven upward by the movable sleeve rod 15, and the extrusion plate 127 will squeeze the spring 126, so that the spring 126 stores elastic potential energy for accumulation of force. When the suction is completed, the suction force on the sealing plate 124 disappears. At this time, the spring 126 is reset by virtue of the stored elastic potential energy, pushing the extrusion plate 127 back to its original position. Since the extrusion plate 127 is fixedly connected to the movable sleeve rod 15, the movable sleeve rod 15 will drive the sealing plate 124 to move downward and re-fit the top of the flow chamber 123 to form a sealed state again. This design can effectively prevent the gas from leaking out from the inside of the intake pipe 12 during the exhaust process, further improving the stability and reliability of the isolating switch operating mechanism during the tripping action 23. In the design of the throat pipe 1211, in order to further ensure sufficient gas supply, an air intake channel 129 is added to the side of the throat pipe 1211. When the gas is compressed in the shrinking chamber, a part of the gas will pass through the throat pipe 1211 according to the original path, and enter the expansion chamber 121 after being subdivided by the guide cover 1210; at the same time, the compressed gas can also use the air intake channel 129 on the side to directly replenish the gas inside. This design effectively avoids the impact of insufficient gas volume on the operation effect of the entire system, ensuring that during the inhalation process, there is enough gas to smoothly enter the expansion chamber 121 and finally reach the inside of the gas storage chamber 91, providing stable and sufficient gas source support for suppressing the swing of the trip button 23, and further improving the performance and stability of the operating mechanism of the disconnector.When the trip button 23 is reset, it will push the connecting piece 11, and the connecting piece 11 will drive the pulling rod 1001 and the damping plug 92 to move in the opposite direction, thereby causing the gas storage box 9 to exhaust through the exhaust pipe 13. Under the action of the exhaust power, the sealing plate 124 inside the exhaust pipe 13 moves away from the sealing position, which is opposite to the upward movement direction of the sealing plate 124 in the intake pipe 12 when inhaling air, and opens the channel of the flow cavity 123. At this time, the gas in the gas storage cavity 91 is pressurized and first enters the contraction cavity of the exhaust pipe 13. After the gas is accelerated in the contraction cavity, it flows into the throat pipe 1211 in the reverse direction. In the throat pipe 1211, the gas passes through the guide vane 1213. Due to the intake pipe 12 and the exhaust The air pipe 13 is distributed in a mirror image, and the guide vanes 1213 guide the gas to flow in an orderly manner in the opposite direction to that during inhalation. Then, the gas continues to flow and is discharged through the expansion cavity 121. During the inhalation process, the air inlet channel 129 on the side of the throat pipe 1211 is used to replenish the gas. When the gas is compressed in the shrinking cavity of the air inlet pipe 12, a part of the gas will pass through the throat pipe 1211 according to the original path, and enter the expansion cavity 121 after being subdivided by the guide vanes 1213; at the same time, the compressed gas can also be replenished to the interior with the help of the air inlet channel 129 to avoid insufficient gas volume. The bottom of the sealing plate 124 is connected to the movable sleeve rod 15, and the movable sleeve rod 15 penetrates The cross bar 1261 is connected to the extrusion plate 127 at the end. When the sealing plate 124 moves away from the sealing position, the extrusion plate 127 squeezes the spring 126 to store force. After the exhaust is completed, the spring 126 resets and pushes the extrusion plate 127, driving the movable sleeve rod 15 and the sealing plate 124 back to the position of the sealed flow chamber 123, preventing the gas from being sucked into the exhaust pipe 13 during inspiration. Through the mirrored design of the intake pipe 12 and the exhaust pipe 13 with the same parts structure, the operating mechanism realizes orderly inspiration and exhaust, and uses the resistance generated by the gas flow to effectively suppress the swing of the trip button 23 during tripping and resetting, thereby ensuring the stable operation of the operating mechanism of the disconnector. When trip button 23 resets and triggers the exhaust action, the pressurized gas in gas storage chamber 91 is accelerated through the contraction chamber of exhaust pipe 13 and flows back into throat pipe 1211. Then, it is systematically guided to expansion chamber 121 by guide vanes 1213. At this point, exhaust pipe 13 is fixedly connected to delivery pipe 8 via a hose. Gas flows through the hose into delivery pipe 8 and then into transverse groove 53. Due to the high-speed flow of gas within transverse groove 53, according to the principles of fluid mechanics, a significant suction force is generated within annular groove 54. This suction force effectively draws heat generated by the return torsion spring 55 during deformation or operation into transverse groove 53. The top of transverse groove 53 is connected to an L-shaped groove. This absorbed heat is discharged out of the mechanism along with the gas through the L-groove. In this way, the heat generated by the return torsion spring 55 is continuously removed, preventing accelerated aging or performance degradation due to excessive temperature, thereby significantly extending the service life of the return torsion spring 55 and ensuring the long-term and stable operation of the disconnector operating mechanism.

[0024] Working principle: When in use, Step 1: Normal closing and fault tripping process During normal closing operation, the trip latch 23 engages with the lock latch 28, and the rotating rod 6 rotates within the movable circular opening 51, causing the reset torsion spring 55, which is sleeved on the heat dissipation rod 56, to pre-twist and store elastic potential energy, maintaining a stable closing state. In the event of a line fault, the electromagnetic release is activated, and the driving force acts on the trip latch 23, driving the rotating rod 6 to rotate. The torsion angle of the reset torsion spring 55 increases, and its potential energy increases. When the trip latch 23 rotates to a specific angle and disengages from the lock latch 28, the reset torsion spring 55 releases its potential energy to help the trip latch 23 quickly complete the tripping, separating the moving and static contacts of the disconnector and disconnecting the circuit. After the fault is eliminated, external operation resets the mechanism, the trip latch 23 re-engages with the lock latch 28, and the reset torsion spring 55 returns to its pre-twisted state.

[0025] Step 2: Stable suction and exhaust mechanism during tripping When the trip button 23 is released, the connecting part 11 moves accordingly, driving the pulling rod 1001 to be pulled out from the gas storage box 9, and the damping plug 92 follows the movement. The pulling rod 1001 is movably connected to one side of the gas storage box 9, and the damping plug 92 is limited in the gas storage chamber 91; the intake pipe 12 and the exhaust pipe 13 on the gas storage box 9 play a role, and the movement of the damping plug 92 causes the gas storage box 9 to inhale air through the intake pipe 12: the sealing plate 124 is separated from the partition 122 by the suction force, opening the flow chamber 123, and the gas enters the narrow chamber 1212 and is compressed. When flowing through the throat 1211, it is subdivided by the guide vane 1213, enters the expansion chamber 121 for buffering, and then enters the gas storage chamber 91. The air intake channel 129 assists in air replenishment; when inhaling, the sealing plate 124 drives the extrusion plate 127 to squeeze the spring 126 to accumulate force. At the end of inhalation, the spring 126 resets and pushes the extrusion plate 127 to make the sealing plate 124 reseal the flow chamber 123. When the trip button 23 is reset, the gas storage box 9 is exhausted through the exhaust pipe 13, and the sealing plate 124 inside the exhaust pipe 13 moves in the opposite direction to open the channel. The gas is accelerated by the contraction chamber and guided by the throat 1211, and then discharged through the expansion chamber 121. The resistance generated by the intake and exhaust ensures the stability of the tripping and resetting action of the trip button 23.

[0026] Step 3: Reset the heat dissipation protection function during exhaust The reset of trip button 23 triggers exhaust. The gas in storage chamber 91 accelerates through the contraction chamber of exhaust pipe 13, flows in the opposite direction into throat pipe 1211, and is guided by guide vanes 1213 into expansion chamber 121. It then enters transverse groove 53 through a flexible tube connected to delivery pipe 8. The high-speed flow of gas within transverse groove 53 creates a suction force within annular groove 54, drawing heat generated by the return torsion spring 55 into transverse groove 53. The heat is then discharged through the L-shaped groove at the top of transverse groove 53, preventing the return torsion spring 55 from aging due to overheating and ensuring the long-term stable operation of the disconnector operating mechanism.

[0027] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An isolating switch operating mechanism with a quick trip function, characterized in that: The invention comprises a housing (10), a connecting rod mechanism (20), and a handle shaft assembly (30), wherein the handle shaft assembly (30) is configured to transmit the rotational force of the operating handle to the connecting rod mechanism (20), so that the connecting rod mechanism (20) drives the switch body (40) to open or close the switch, and the connecting rod mechanism (20) comprises a mechanism frame (21), a lever (22), a trip button (23), an upper connecting rod (24), a lower connecting rod (25), and a driving member (26), wherein a connecting rod shaft (201) is connected between the upper connecting rod (24) and the lower connecting rod (25), and the lever (22) is rotatably arranged on the mechanism frame (21) and is linked to the handle shaft assembly (30), and the lever (22) is connected to the upper connecting rod (24) and the lower connecting rod (25). ) and the connecting rod shaft (201); a main spring (27) is connected between the upper connecting rod (24) and the connecting rod shaft (201); the trip buckle (23) is rotatably arranged on the mechanism frame (21); an upper connecting shaft (202) is connected between the upper connecting rod (24) and the trip buckle (23); a lower connecting shaft (203) is connected between the lower connecting rod (25) and the driving member (26); a lock buckle (28) that is rotatably arranged on the mechanism frame (21) and is engaged with the trip buckle (23); the driving member (26) is rotatably arranged on the mechanism frame (21); and the driving member (26) is configured to transmit the driving force of the lower connecting rod (25) to the main shaft of the switch body (40) so that the switch body (40) performs an opening or closing action.

2. The disconnect switch operating mechanism with a quick trip function according to claim 1, characterized in that: The handle shaft assembly (30) includes a handle shaft (31) and a slider (32) slidably arranged in the housing (10), the slider (32) and the lever (22) are linked and matched to make the lever (22) rotate on the mechanism frame (21), one end of the handle shaft (31) has a rotating shaft portion (311) extending outside the housing (10) and connected to the operating handle, the other end of the handle shaft (31) is provided with a driving gear (33), the slider (32) has a rack portion (321) meshed with the driving gear (33), two toggle grooves (322) are provided on both sides of the slider (32), two toggle rods (221) matched with the two toggle grooves (322) are provided on both sides of the lever (22), the two toggle rods (221) are inserted in the two toggle grooves (322), and form a connection between the two toggle rods (221) and the slider. The housing (10) is provided with two guide posts (34) symmetrically, and the slider (32) is provided with two guide holes (323) that match the two guide posts (34). The two guide posts (34) are respectively inserted into the two guide holes (323) and constitute a sliding connection between the slider (32) and the two guide posts (34). The housing (10) includes a bottom shell (101) and a cover body (102). Positioning grooves (1011) are provided at both ends of the two guide posts (34) in the bottom shell (101). The two ends of the two guide posts (34) are respectively placed in the positioning grooves (1011). The cover body (102) covers the bottom shell (101) and is connected by fasteners, and the cover body (102) presses the two ends of the two guide posts (34) into the positioning grooves (1011).

3. The disconnect switch operating mechanism with a quick trip function according to claim 1, characterized in that: One end of the jump buckle (23) has a locking piece (231) that matches the lock buckle (28), and the lock buckle (28) is provided with a locking groove (281) that matches the locking piece (231). The locking piece (231) is engaged in the locking groove (281) and constitutes a limiting match between the locking piece (231) and the locking groove (281). A reset tension spring (230) is provided between the other end of the jump buckle (23) and the mechanism frame (21). A lock buckle pressure spring (230) is provided on the mechanism frame (21) at a side corresponding to the lock buckle (28). Plate (29), the lock buckle (28) is provided with a torsion spring (280) that cooperates with the lock buckle pressure plate (29), the lock buckle pressure plate (29) cooperates with the torsion spring (280) to keep the lock buckle (28) and the jump buckle (23) in a buckled state, the lock buckle (28) is provided with a positioning rod (2811), the torsion spring (280) is sleeved on the positioning rod (2811), the first torsion arm of the torsion spring (280) abuts against the lock buckle (28), and the second torsion arm of the torsion spring (280) abuts against the lock buckle pressure plate (29).

4. The disconnect switch operating mechanism with a quick trip function according to claim 1, characterized in that: The lever (22) is provided with a toggle piece (222) for driving the jump buckle (23) to move. The toggle piece (222) transmits the driving force of the lever (22) to the jump buckle (23), so that the jump buckle (23) and the lock buckle (28) perform a buckling action. The jump buckle (23) is provided with an arc-shaped raised portion (232) on the middle part thereof, which cooperates with the toggle piece (222).

5. The disconnector operating mechanism with a quick trip function according to claim 1, characterized in that: The mechanism frame (21) and the jump button (23) are movably connected through a connecting rod (5); a connecting ring (4) is fixedly installed inside the jump button (23) on a side away from the mechanism frame (21); a rotating rod (6) is movably connected inside the connecting rod (5); two symmetrical fixing pins (7) are fixed on the outer wall of one end of the rotating rod (6) away from the connecting rod (5); a delivery pipe (8) is fixedly installed on the side of the connecting rod (5); a gas storage box (9) is provided on the top of the connecting rod (5); The outer wall of the box (9) away from the jump button (23) is fixedly connected to the outer wall of the mechanism frame (21), and two symmetrical air intake pipes (12) and exhaust pipes (13) are fixed inside one side of the air storage box (9). A pull-out rod (1001) is movably sleeved inside the side of the air storage box (9) away from the air intake pipe (12), and a connecting piece (11) connected to the jump button (23) is fixedly installed on the outer wall of the pull-out rod (1001), and the outer wall of the connecting piece (11) is fixedly connected to the outer wall of the jump button (23).

6. The disconnector operating mechanism with a quick trip function according to claim 5, characterized in that: The connecting rod (5) is provided with a movable circular opening (51) inside, a rotating shaft (52) is fixedly installed inside the movable circular opening (51), a heat dissipation rod (56) is movably sleeved inside the rotating shaft (52), a transverse groove (53) is provided inside the heat dissipation rod (56), and L is provided at both ends of the transverse groove (53). The heat dissipation rod (56) is provided with a ring groove (54) on the circumferential outer wall thereof, wherein the outlet of the connecting groove at one end of the jump buckle (23) away from the rotating shaft (52) extends to the side of the rotating rod (6), the inner part of the ring groove (54) and the inner part of the transverse groove (53) are communicated with each other, and the outer wall of the transverse groove (53) is also sleeved with a reset torsion spring (55), the end of the ring groove (54) away from the rotating shaft (52) is fixedly connected to the rotating rod (6), the inner part of the connecting ring (4) is provided with an extension cavity (41), and the inner parts of both sides of the extension cavity (41) are provided with a clamping cavity (42), and the inner part of the clamping cavity (42) and the outer wall of the fixing pin (7) are adapted to each other.

7. The disconnector operating mechanism with a quick trip function according to claim 5, characterized in that: An expansion cavity (121) is provided inside the air inlet pipe (12) and the exhaust pipe (13), a partition (122) is fixedly installed inside the expansion cavity (121), a flow cavity (123) is provided inside the partition (122), a movable sleeve rod (15) is movably sleeved inside the flow cavity (123), one end of the movable sleeve rod (15) is fixedly connected to a sealing plate (124), an outer wall of the sealing plate (124) is in contact with the top of the flow cavity (123), and the movable sleeve rod (15) is away from the sealing plate ( An extrusion plate (127) is fixedly mounted on one end of the movable sleeve rod (15) near the extrusion plate (127), and a crossbar (1261) is movably mounted on the outer wall of one end of the movable sleeve rod (15) near the extrusion plate (127). A spring (126) is provided between the extrusion plate (127) and the crossbar (1261), and the outer wall of the spring (126) and the outer wall of the movable sleeve rod (15) are intertwined with each other. A throat pipe (1211) is connected to the side of the expansion cavity (121), and a narrow cavity (1212) connected to the throat pipe (1211) is connected to the side of the throat pipe (1211). A flow guide cover (1210) is fixedly mounted on the side of the throat pipe (1211) near the expansion cavity (121). An air intake channel (129) is opened on the side of the air intake pipe (12), and the interior of the air intake channel (129) and the interior of the throat pipe (1211) are connected to each other.

8. The disconnector operating mechanism with a quick trip function according to claim 7, characterized in that: A guide vane (1213) is fixedly connected to the interior of the guide cover (1210), and the angles on both sides of the guide vane (1213) range from forty to forty-five degrees.

9. The disconnect switch operating mechanism with a quick trip function according to claim 5, characterized in that: An air storage chamber (91) is provided inside the air storage box (9), a damping plug (92) is movably sleeved inside the air storage chamber (91), and a side of the damping plug (92) away from the air inlet pipe (12) and the exhaust pipe (13) is fixedly connected to a pull rod (1001).

10. A method for operating an isolating switch with a quick trip function according to claims 1-9, characterized in that: The following steps are involved: Step 1: Initial state confirmation. Before performing any operation, check the connection of each operating mechanism of the disconnector to ensure that the handle shaft assembly (30), the mechanism frame (21) in the connecting rod mechanism (20), the lever (22), the jump buckle (23), the upper connecting rod (24), the lower connecting rod (25), the driving member (26) and the lock buckle (28) are firmly connected and there is no looseness. At the same time, confirm that the lock buckle (28) and the jump buckle (23) are in a normal buckling state, the springs are not deformed or damaged, and the entire operating mechanism is in the initial preparation state. Step 2: The closing operation is executed. The operating handle is turned, and the handle shaft (31) rotates accordingly. The driving gear (33) on the handle shaft (31) drives the slider (32) to slide in the housing (10). The toggle slots (322) on both sides of the slider (32) drive the toggle rods (221) on both sides of the lever (22), causing the lever (22) to rotate around the mechanism frame (21). The lever (22) pulls the connecting rod shaft (201) through the main spring (27) to operate. The main spring (27) ) starts to store energy. As the lever (22) continues to rotate, the connecting rod shaft (201) drives the upper connecting rod (24) and the lower connecting rod (25) to rotate. When the main spring (27) passes the dead point, the main spring (27) releases energy. The connecting rod shaft (201) drives the driving member (26) to rotate rapidly with the help of the upper connecting rod (24) and the lower connecting rod (25). The driving member (26) transmits the driving force to the main shaft of the switch body (40), causing the switch body (40) to perform the closing action. Step 3: Preparation for re-closing after a fault occurs. If a fault occurs in the line and causes the operating mechanism to trip and open, when preparing to re-close the circuit breaker after eliminating the fault, the toggle piece (222) on the lever (22) interacts with the arc-shaped raised portion (232) in the middle of the tripping buckle (23). When the lever (22) rotates, the toggle piece (222) drives the arc-shaped raised portion (232), driving the tripping buckle (23) to move, so that the tripping buckle (23) and the lock buckle (28) are re-engaged, thereby preparing for the re-closing operation and ensuring that the operating mechanism can resume normal working state.

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