2341results about "Air-break switch details" patented technology

The invention belongs to the technical field of power distribution network equipment, and relates to an interlocking device with an emergency unlocking function and an environment-friendly ring main unit, and the interlocking device comprises an isolation interlocking assembly, a circuit breaker interlocking assembly and a chamber door interlocking assembly. The isolation interlocking assembly comprises an isolation interlocking plate, and one side of the isolation interlocking plate is provided with a shielding part; the circuit breaker interlocking assembly comprises a closing interlocking group which is arranged on the isolation interlocking plate and is used for locking and unlocking a closing release in the ring main unit; the chamber door interlocking assembly comprises a chamber door interlocking piece suitable for movably unlocking a cable chamber door on the ring main unit; the chamber door interlocking piece is provided with a rod abutting part connected with the chamber door interlocking piece through a fixing bolt. The protection functions that the circuit breaker cannot be switched on first when the disconnecting switch is switched off, the grounding switch is switched on in an electrified mode after the circuit breaker is switched on, and a cable chamber door cannot be opened when the circuit breaker is switched on are achieved through interlocking. And meanwhile, under the emergency condition of interlocking failure caused by interlocking clamping stagnation or other unforeseen circumstances, the fixing bolt can be disassembled to unlock and open the cable chamber door emergently.

The invention relates to the technical field of low-voltage electric appliances, in particular to a magnetic flux release, an isolating switch and a power supply system. The electromagnetic coil is installed on the support, and the ejector rod is inserted into the electromagnetic coil in a sliding mode. In the electromagnetic coil, at least two movable iron cores which are arranged at intervals in the axial direction are arranged on the ejector rod; when the electromagnetic coil is powered on, at least one movable iron core moves in the axial direction of the ejector rod and drives the ejector rod to move. According to the embodiment of the invention, at least two movable iron cores are arranged in the magnetic flux release, so that differentiated response can be realized for different faults.

The utility model belongs to the technical field of medium-voltage power distribution systems, and discloses an isolating switch device and a switch cabinet, the isolating switch device comprises an insulating rod, a conductive block, a conductive sheet and an operating mechanism, the conductive block is sleeved on the insulating rod, the conductive sheet is fixedly connected with the conductive block, and the operating mechanism drives the conductive sheet and the conductive block to rotate through the insulating rod. Therefore, the conducting strip is selectively connected or disconnected with the circuit breaker connector bar, and the conducting block is electrically connected with the voltage transformer in the rotating process. An isolating switch device is additionally arranged between a circuit breaker and a voltage transformer in a switch cabinet, an operating mechanism is utilized to drive a conducting strip and a conducting block to rotate through an insulating rod, the conducting block and the voltage transformer keep electrical connection in the rotating process, the position of the conducting strip is changed in the rotating process, and then the conducting strip is selectively connected with or disconnected from a circuit breaker connector bar. The structure is simplified, the number of elements is reduced, flexible operation can be achieved, and the stability and reliability of the disconnecting switch device can be guaranteed.

The invention discloses an electrified railway anti-misoperation outdoor high-voltage combined electric appliance device, which comprises an anti-misoperation spring energy storage device, an isolating switch linkage mechanism and a circuit breaker linkage mechanism, and is characterized in that the anti-misoperation spring energy storage device consists of an energy storage shaft, an energy storage spring and an energy storage transmission connecting rod; the anti-misoperation spring energy storage device is further provided with an energy storage limiting mechanism for preventing the energy storage shaft from rotating mistakenly after the energy storage spring stores energy, and an opening and closing trigger mechanism for tripping the energy storage limiting mechanism. The integrated spring energy storage transmission device has a mechanical interlocking function and can prevent misoperation, the integrated switch structure ensures firmness and mechanical reliability, connecting wires among equipment during dispersed installation are eliminated, the occupied area is reduced by more than 40% compared with traditional discrete arrangement, centralized maintenance is convenient, and the integrated switch structure is simple in structure and convenient to operate. And the overhaul and maintenance work efficiency is improved.

The invention discloses a mechanical interlocking device of a switch cabinet, the switch cabinet comprises a cabinet body, a cabinet door, and a circuit breaker mechanism and an isolation mechanism arranged in the cabinet body, the cabinet door is hung on the cabinet body, the isolation mechanism is provided with a grounding shaft and an isolation shaft, the circuit breaker mechanism is provided with a closing button and a circuit breaker main shaft, the grounding shaft is provided with a first cam, and the isolation shaft is provided with a second cam. The isolation shaft is provided with a second cam, the circuit breaker main shaft is provided with a third cam, the mechanical interlocking device comprises a first interlocking assembly, a second interlocking assembly and a third interlocking assembly, one end of the first interlocking assembly is matched with the outline of the first cam, and the other end of the first interlocking assembly is matched with the cabinet door in a hanging mode; one end of the second interlocking assembly is matched with the contour of the second cam, the other end of the second interlocking assembly is in locking fit with the closing button, one end of the third interlocking assembly is matched with the contour of the third cam, and the other end of the third interlocking assembly is in shielding fit with the isolation shaft. Misoperation of the switch cabinet can be prevented, the reliability of the interlocking mechanism can be improved, and the service life of the interlocking mechanism can be prolonged.

The invention discloses a compact type environment-friendly gas insulation ring main unit. A gas tank is arranged in a cabinet body, a circuit breaker switch unit is arranged at the upper part in the gas tank, an isolation switch unit is arranged at the lower part, a bus side expansion sleeve is arranged at the top, and a lower incoming and outgoing line sleeve is arranged at the bottom. A main shaft of the circuit breaker switch unit is connected with a pole through a transmission connecting lever and other parts, the main shaft is provided with an umbrella skirt insulating part, and an insulating partition plate is arranged between static contacts and integrally cast with the pole. A main shaft of the disconnecting switch unit is sleeved with a moving contact and works cooperatively with other parts through an insulating connecting piece and the like, and a bus side expansion sleeve and a lower incoming and outgoing line sleeve are provided with C-shaped protective covers. The environment-friendly gas is adopted, and the environment-friendly requirement is met; by optimizing the structure and layout of each component, the size of the ring main unit is obviously reduced, and the old network transformation requirement is met; the unique insulation design effectively improves the insulation performance, reduces the fault risk, and guarantees the safe and stable operation of a power system.

The invention provides a vacuum circuit breaker with an isolating switch, which comprises a switch body and an anti-misoperation device, the anti-misoperation device comprises a first cam and an interlocking plate, the first cam is fixed on an isolating main shaft and rotates along with the isolating main shaft in a linkage manner, the interlocking plate is movably mounted on the switch body, and when the isolating main shaft is in a switching-off position, the interlocking plate rotates along with the isolating main shaft. The interlocking plate is driven by the first cam to be in a locking position, so that the interlocking plate is matched with the handle of the circuit breaker to be locked, the circuit breaker is prevented from being switched on, the situation that maintenance personnel can still manually drive the circuit breaker to be switched on when the disconnecting switch and the circuit breaker are both in a switching-off state in the prior art is avoided, unnecessary operation is prevented, and time and labor are saved; in addition, when the isolating switch is in a closing position, the isolating main shaft drives the first cam to rotate, the interlocking plate is separated from the circuit breaker handle under the acting force of the elastic piece, and the circuit breaker can be closed.

The invention relates to an isolation switch and a control method thereof. The isolating switch comprises a management system (100) which judges the opening and closing state of the isolating switch by receiving a contact signal of the isolating switch (200); a processing unit (210) which receives the control signal from the management system (100) and transmits a driving signal; the driving motor (230) is used for controlling the executing mechanism (240) to act according to the driving signal; the executing mechanism (240) is driven by the driving motor (230) to perform opening and closing actions of the isolating switch (200); the current sampling unit (250) is used for sampling a current signal of the driving motor (230) and feeding back the sampled current to the processing unit (210), and in the processing unit (210), the actual position of the execution mechanism (240) is judged according to a comparison result of the sampled current and a threshold value.

The utility model discloses an intelligent vacuum circuit breaker, which comprises an operating main shaft, an isolating switch shaft, a solid-sealed polar pole and a grounding switch, the operating main shaft and the isolating switch shaft are respectively driven to rotate by a circuit breaker electric operating mechanism and an isolating switch electric operating mechanism, and an insulating shell of the solid-sealed polar pole is provided with a current sensor and a voltage sensor. The operating main shaft drives a breaker moving contact and a breaker static contact to be in contact or separated through an insulating pull rod, the insulating pull rod is provided with a pressure sensor, the breaker static contact is connected with one end of an isolation switch disconnecting link, and an isolation switch shaft drives the other end of the isolation switch disconnecting link to be in contact or separated from an isolation static contact. The circuit breaker electric operating mechanism is provided with a remote communication antenna and a control module. The purpose of the utility model is to provide an intelligent vacuum circuit breaker, which enables a 35kV prefabricated substation to completely realize remote control, state measurement and health monitoring, improves the operation efficiency, and realizes remote control of the health state of equipment.

The invention belongs to the field of low-voltage switches, and particularly relates to a kick structure of an isolating switch and the isolating switch, and the kick structure comprises a shell assembly, a kick piece, a linkage piece, an energy-gathering elastic piece, a closing limiting piece and an opening limiting piece. Different from rotary motion of a kick piece and a linkage piece in an existing conventional kick mechanism, the kick piece and the linkage piece of the kick mechanism do linear motion, the energy-gathering elastic piece adopts a pressure spring limited between the kick piece and the linkage piece, and the energy-gathering elastic piece can only do telescopic motion in the first direction X to store / release energy; the opening limiting piece or the closing limiting piece limits the kick piece so that the kick piece can not move to the opening position or the closing position, and the linkage piece moves relative to the kick piece to drive the energy-gathering elastic piece to compress and store energy and moves until the linkage piece pushes the opening limiting piece or the closing limiting piece to unlock. The kick piece quickly acts to the opening position or the closing position under the energy release of the energy-gathered elastic piece, the action is reliable, and the overall size is small.

The invention discloses a vertical open type isolating switch, which comprises a static contact seat, a static contact, a static contact, a static contact and a static contact, and is characterized in that the static contact seat is provided with an open slot; a tool arm base; the tool arm driving shaft is movably mounted on the tool arm base; the tool arm moving seat is hinged to the tool arm base; the conductive tool arm is mounted on the tool arm moving seat and can rotate along with the tool arm moving seat until the conductive tool arm is clamped into the open slot, a radial bulge structure is arranged on the peripheral wall of the conductive tool arm, and the conductive tool arm can rotate along the axis of the conductive tool arm relative to the tool arm moving seat; and the transmission mechanism is used for connecting the tool arm driving shaft with the conductive tool arm in a transmission manner, and can enable the radial bulge structure on the conductive tool arm to tension the open slot after the conductive tool arm is clamped into the open slot. When the conductive cutter arm starts to enter the open slot, the radial bulge structure does not tension the two opposite side walls of the open slot, so that the resistance is not large when the conductive cutter arm enters and exits the open slot, and after the conductive cutter arm is clamped into the open slot, the radial bulge structure continues to rotate and is gradually opened to tension the two opposite side walls of the open slot, so that the conductive cutter arm is in tight contact, and sufficient contact force is ensured.

An apparatus for use in a power delivery system, the apparatus comprising: a DC circuit breaker having first and second terminals and configured to automatically switch from a closed state to an open state during an overcurrent condition; a disconnector switch in series with the DC circuit breaker, the disconnector switch having a first terminal for connecting to a first polarity terminal of a DC power supply, a second terminal for connecting to a second polarity terminal of the DC power supply and a common terminal connected to the first terminal of the DC circuit breaker, the disconnector switch having at least a first position in which the first terminal is connected to the common terminal and a second position in which the second terminal is connected to the common terminal; and an interlock mechanism coupled to the DC circuit breaker and the disconnector switch, the interlock mechanism configured to disable the DC circuit breaker from automatically switching from the closed state to the open state during the overcurrent condition when the disconnector switch is in the second position.

The utility model discloses a double-break disconnecting switch and GIS equipment, the disconnecting switch comprises a first static contact assembly, a second static contact assembly and a moving contact assembly, and the moving contact assembly and the first static contact assembly and the second static contact assembly are separately arranged at intervals; wherein the moving contact assembly comprises a moving contact seat, a first moving conductor assembly, a second moving conductor assembly and a gear assembly, the first moving conductor assembly and the second moving conductor assembly are respectively arranged on the moving contact seat and are in sliding connection with the moving contact seat, and the gear assembly is arranged between the first moving conductor assembly and the second moving conductor assembly. The gear assembly is engaged with the first moving conductor assembly and the second moving conductor assembly, and the gear assembly can drive the first moving conductor assembly and the first static contact assembly to be switched on or switched off and drive the second moving conductor assembly and the second static contact assembly to be switched off. The extension side or the maintenance side of the GIS equipment can be independently tested, so that the influence on the running bus caused by the abnormity of the extension side or the maintenance side is avoided, and the running safety of the power station is improved.

The utility model relates to a protection device for an MSD switch, a power battery comprising the protection device and an operation machine comprising the power battery. The MSD switch includes a receptacle formed with a cavity. The protection device comprises a lock frame which is arranged adjacent to the socket and is provided with a lock hole, a retainer which can be locked with the lock frame in a removable manner, and an insulating block which is arranged on the retainer. And the retainer and the insulating block are configured in a way that when the retainer is locked on the lock frame, the insulating block is jointed in the concave cavity. The protection device is simple in structure and assembly, low in cost and high in universality.

The utility model discloses a sealing box body for an outdoor high-voltage isolating switch, which belongs to the technical field of sealing box bodies and comprises a bottom plate, a square box body is fixedly connected to the top of the bottom plate, an air bellow is fixedly connected to the side face of the square box body, a shell is fixedly connected to the side face of the air bellow, and a driving motor is fixedly installed in the shell. A bearing is fixedly connected to the side face of the air bellow, a rotating shaft is rotationally connected into the bearing, one end of the rotating shaft is fixedly connected with the shaft end of the driving motor, the driving motor works to drive the rotating shaft to rotate, and then the purpose that the multiple fan blades blow air to the disconnecting switch is achieved. The heat dissipation effect on the interior of the square box body is achieved through heat dissipation holes, through work of a first electric push rod, the purpose that a first connecting plate drives a first baffle to move is achieved, and the effect of shielding dust or gravel doped in strong wind is achieved.

The invention discloses a high-voltage switch cabinet interlocking device which comprises a high-voltage switch cabinet, an isolating switch, a circuit breaker, an isolating switch interlocking mechanism and a cable chamber door interlocking mechanism, the isolating switch and the circuit breaker are arranged in the high-voltage switch cabinet, and the isolating switch interlocking mechanism is arranged on the isolating switch. The disconnecting switch interlocking mechanism controllably ascends under the action of the circuit breaker to limit opening and closing of the disconnecting switch, the cable chamber door interlocking mechanism is arranged at the position of the circuit breaker, the cable chamber door interlocking mechanism automatically relieves interlocking of a cable chamber door after the disconnecting switch is grounded, and the cable chamber door can be opened with one hand. The interlocking device has the advantages that the disconnecting switch interlocking mechanism and the cable chamber door interlocking mechanism are matched with the disconnecting switch and the circuit breaker to control opening and closing of the circuit breaker, the cable chamber door is interlocked through mutual interlocking between the disconnecting switch interlocking mechanism and the cable chamber door interlocking mechanism, the structure is simple, stability is high, the number of self-made sheet metal parts is small, machining procedures are reduced, and cost is reduced. And the labor cost and the raw material cost are reduced.

The invention belongs to the technical field of electric power, and discloses an isolating switch which comprises a base, a second insulating column fixedly mounted at the top of the base, a static contact pad fixedly mounted at the top of the second insulating column, and a disconnecting link assembly hinged to the static contact pad, and the butt joint assembly is fixedly arranged at the top of the base. According to the invention, the disconnecting link main body is driven by an electric motor or a hand wheel to rotate by taking the hinged part of the disconnecting link main body and the static contact pad as a center shaft, so that the butt joint piece falls into the top of the moving contact pad, the butt joint piece pushes the two sliding frames, the conductive piece and the butt joint toothed plate to move relatively, and the butt joint toothed plate is engaged with racks on two sides of the butt joint piece; the contact area of the butt-joint piece and the butt-joint toothed plate is increased through meshing of the multiple racks, the phenomenon of deformation caused by thermal expansion and cold contraction is avoided, meanwhile, the butt-joint piece and the butt-joint toothed plate are in surface contact all the time, the effective conductive section is guaranteed, local overheating and arc discharge are avoided, and the reliability of circuit on-off is guaranteed.

The utility model relates to the technical field of outdoor high-voltage vacuum circuit breakers, and discloses an outdoor high-voltage vacuum circuit breaker with an isolating switch, the top of a base is fixedly connected with a circuit breaker body, the middle part of the front side of the base is fixedly connected with a fixed shell, and the two sides of the fixed shell are fixedly connected with electric push rods. A clamping plate is fixedly connected to one side of the electric push rod, a connecting base is fixedly connected to the middle of the front side of the circuit breaker body, a winding roller is rotatably connected to the interior of the connecting base, an electric wire is arranged on the winding roller, and an isolating switch is fixedly connected to the bottom of the electric wire; a servo motor, a winding roller, an electric wire and the like are arranged to be matched with the disconnecting switch for use, the servo motor drives the winding roller to rotate so as to unwind the electric wire, the electric wire drives the disconnecting switch to move downwards so as to move to the position below the circuit breaker body, and therefore the danger of electric shock caused by an operator in the using process can be prevented; and a response can be conveniently and quickly made in an emergency.

The radial opening mechanism comprises a disc-shaped base plate, a plurality of radial sliding grooves are evenly distributed in the surface of one side of the disc-shaped base plate in the annular direction, radial supporting rods are arranged in the radial sliding grooves in a sliding mode, and supporting blocks are arranged at the front ends of the radial supporting rods; a pull rod penetrates through the center of the disc-shaped base plate, and the front end of the pull rod is connected with the radial supporting rods through parallelogram hinge structures. When the pull rod moves backwards, the radial supporting rods can synchronously expand outwards in the radial direction, and the annular elastic piece is opened by the multiple supporting blocks. The pull rod is sleeved with a reset spring used for resetting the pull rod. The radial supporting rods expand outwards in the radial direction under the action of the pull rods and the parallelogram hinge structures, the opening effect of the annular elastic pieces is achieved, and the device is simple in structure, light in weight and convenient to move.

According to the technical scheme, the contact assembly comprises an installation plate, a contact knife support, a static contact support and a contact knife, each static contact is provided with a cushion block with an inclined plane, each cushion block is provided with a buffer spring, each static contact support is provided with symmetrical static contacts, each static contact comprises a contact terminal, a support and a connecting rod, and each contact terminal is provided with an inclined plane. The contact terminal is fixedly connected to the static contact support, the support is fixedly connected to the static contact support, the support is movably connected with the connecting rod, the connecting rod is provided with a connecting rod protrusion extending and contacting with an inclined plane, the contact knife is provided with a cavity, the cavity is provided with a fastening device, and the static contact support is provided with a matched fastening base. Through the arrangement of the cushion block and the buffer spring, the impact on the contact knife is reduced, and the service life of the contact knife is prolonged. By arranging the linkable static contact, the static contact can clamp the contact knife to obtain reliable connection and is not easy to loosen.

The utility model discloses a 12kV primary fusion type environment-friendly intelligent circuit breaker, and belongs to the technical field of electricity and electric power. Comprising a support, a sealing shell and two sets of wire inlet sleeves and wire outlet sleeves arranged at the top of the sealing shell, the wire outlet sleeves are located at the bottoms of the wire inlet sleeves, the wire outlet sleeve on one side is connected with an isolation disconnecting link structure through a conductive contact finger and a conductive connecting lever, and the wire outlet sleeve on the other side is connected with a vacuum arc-extinguishing chamber structure through a sensor module and a conductive arm. The vacuum arc-extinguishing chamber structure is connected with the isolation switch structure through an interlocking device. The utility model has the advantages of high reliability, long service life, environmental protection property, high performance, one-time integration miniaturization, intelligence, simple installation and maintenance and the like, plays an important role in an electric power system, not only improves the operation efficiency and safety of the electric power system, but also promotes the green, low-carbon and sustainable development of the electric power system.

The invention relates to the technical field of circuit breakers, in particular to an anti-burnout primary and secondary fusion sleeve column circuit breaker, which comprises a circuit breaker main body, three isolating knife switches, three contact elastic sheets, a rotary driving mechanism and a mounting framework, and is characterized in that when a front knife board is clamped on the two contact elastic sheets, the front knife board is clamped on the two contact elastic sheets; the two contact elastic pieces can be pushed inwards through the outward pushing mechanism, so that the two contact elastic pieces clamp the front cutting board, and the problem that the elastic force of the contact elastic pieces is lost due to long-term use is solved. When the front cutting board and the rear cutting board are bent due to the rust block, the front cutting board rotates, the front cutting board and the rust block of the contact elastic piece form a rotary cutting mode, the rust block is broken point by point in the mode, and resistance borne by the isolation cutting board when the isolation cutting board is lifted is reduced. And in addition, pulling friction can be generated in the rotary cutting mode, the rust blocks are prevented from being taken up wholly, and more gaps between the isolation cutter plate and the rust blocks are avoided.

The invention relates to the field of low-voltage electric appliances, in particular to an operating mechanism and a switching electric appliance comprising the operating mechanism, in the operating mechanism, a jump fastener, a lock fastener and a re-fastener are respectively and rotatably arranged on a support, a reset spring is arranged between the lock fastener and the re-fastener, and two spring arms are respectively matched with the lock fastener and a vertical arm; when the operating mechanism is normally switched on / off, the locking fastener and the tripping fastener are kept in hasp fit and are kept in first limiting fit with the cross arm; the re-buckling piece is driven by external force to rotate, the first limiting fit is released, the buckling fit between the locking piece and the tripping piece is released, the operating mechanism is tripped, and the locking piece and the cross arm establish second limiting fit; a spring limiting groove is formed in the side, facing the lock catch piece, of the vertical arm, and a spring arm, matched with the vertical arm, of the reset spring is shifted and enters the spring limiting groove through an avoiding notch located in one side of the spring limiting groove. The operating mechanism and the switching device are simple in assembly operation and high in efficiency.

The utility model provides an anti-impact connecting bolt fastening structure of a high-voltage isolating switch, and relates to the technical field of high-voltage switches, the anti-impact connecting bolt fastening structure comprises a high-voltage isolating switch base and a switch anti-impact bolt connecting assembly, through bolts penetrate through the inner sides of base bolt holes, the lower side of a bolt head rubber mat is provided with a back shore spring, and the back shore spring is connected with the switch anti-impact bolt connecting assembly. A limiting sleeve is connected to the outer side of the jacking spring in a sleeving mode, a nut rubber mat is arranged on the lower side of the limiting sleeve, a connecting nut is arranged on the lower side of the nut rubber mat, a metal locking nut is arranged on the lower side of the connecting nut, and due to the effective buffering effect of a damping rubber mat, damage of vibration to the base is remarkably reduced, and the service life of equipment is prolonged; and through rotation of the penetrating bolt, rapid mounting and dismounting can be achieved, firm and reliable connection is ensured, and through adjustment of the fastening strength of the penetrating bolt, impact loads under different working conditions can be flexibly coped with, and stable operation of equipment is ensured.

The utility model discloses a bus grounding switch operating mechanism of a gas insulation type switch cabinet. The bus grounding switch operating mechanism comprises a mechanism box, and a valve assembly, a locking assembly, a transmission assembly, two microswitch assemblies and an elastic trigger assembly which are arranged in the mechanism box. The transmission assembly is connected with a bus grounding switch and is provided with a handle operation hole, the mechanism box is provided with a through hole corresponding to the handle operation hole, the valve assembly is arranged on the mechanism box in a sliding mode, the through hole can be opened or closed through sliding, and the two microswitch assemblies correspond to grounding opening and grounding closing of the grounding switch respectively. The elastic trigger assembly is arranged on the transmission assembly, the transmission assembly can drive the bus grounding switch to conduct grounding closing / opening by rotating the handle operation hole, meanwhile, the elastic trigger assembly triggers the microswitch assembly, and the locking assembly can conduct unlocking and locking on the valve assembly. The bus grounding switch can be operated through the operating mechanism to enable the bus side of the switch cabinet to be grounded, and reliability and safety of equipment are improved.

The invention discloses an electric power engineering isolation switch device, and particularly relates to the technical field of isolation switches, the electric power engineering isolation switch device comprises an equipment main body, the equipment main body comprises a mounting seat, mounting holes are formed in four corners of the mounting seat, the equipment main body further comprises a switch part and a driving part, and the switch part comprises three first insulators and three second insulators; the top of the first insulator and the top of the second insulator are provided with a first power connection plate and a second power connection plate respectively, the first power connection plate and the second power connection plate are provided with a rotating mechanism and a bearing mechanism respectively, the driving part comprises a rotating shaft, the rotating shaft is provided with three swing rods, the swing rods are hinged to third insulators, and the third insulators are hinged to the rotating mechanism. The spherical curved surface is arranged on the fixed plate, the end part of the brake blade is in close fit with the spherical curved surface, and the inclined plate and the elastic plate are also arranged, so that the contact area between the brake blade and the first power connection plate and the contact area between the brake blade and the second power connection plate are increased, heat generated when current passes through can be effectively dispersed, and the heat productivity of the isolating switch is remarkably reduced.

The utility model provides a high-voltage isolating switch with a grounding switch, which comprises a base, a driving insulator, a driven insulator, a first connecting rod, a contact finger, a grounding rod, a first limiting plate and a second limiting plate, and is characterized in that the base is suitable for being mounted on a cross arm of a telegraph pole; the driving insulator and the driven insulator are rotationally connected with the base, and the synchronous rotation of the driving insulator and the driven insulator in the direction is realized through the first connecting rod; a contact finger and a first limiting plate are arranged on a driving insulator or a driven insulator, a second limiting plate is arranged on a cross bar of a grounding rod, the first limiting plate limits rotation of the second limiting plate in a switching-on state, and electric leakage accidents caused by the fact that the grounding rod rotates upwards to make contact with a first contact or a second contact in the switching-on state are effectively avoided; when the switch is switched off and the grounding rod is in contact with the contact finger, the second limiting plate limits the rotation of the first limiting plate, so that the condition that the conductive part is damaged due to wrong operation and driving of the driving insulator to rotate when the vertical rod is in contact with the contact finger is effectively avoided.

The present invention discloses a three-position switch. An innovative fast direct-acting three-position switch is used, so that a moving grounding contact is separated from a moving isolating contact, and contact ablation after closing of a grounding short-circuit current does not affect flow of a main circuit, thereby improving closing capacity. During opening, the moving isolating contact and the moving grounding contact are respectively shielded by a shielding cover, and arc ablation of the contact does not affect insulating performance of a clearance. A three-phase moving isolating contact and a three-phase moving grounding contact are simultaneously driven by a transmission shaft, thereby ensuring synchronization of three phases. A linear motion of the moving grounding contact and the moving isolating contact is implemented through rotation of a three-position insulating spindle, and switching of actions such as closing, opening, and grounding of the three-position switch is implemented. The present invention further discloses a gas box using the switch.

The invention relates to the technical field of circuit breaker isolation switch equipment, and discloses a circuit breaker isolation switch of a primary and secondary fusion ring main unit, which comprises a mechanism box body, an installation space is arranged in the mechanism box body, and the top of the mechanism box body is fixedly connected with a plurality of airtight insulators. According to the invention, when the contact piece is arranged and the disconnecting switch part needs to be switched on, the operation switch is firstly rotated reversely, the rotating shaft rotates to drive the connecting contact at one end of the isolating rod at one end of the operation insulator to approach, and the connecting inclined block is arranged to be inclined, so that the collision phenomenon caused by inaccurate alignment of the isolating rod and the connecting contact can be avoided; the isolating rod is aligned and connected with the connecting contact, so that the connecting contact is protected from being damaged due to collision between the connecting contact and one end of the isolating rod on one hand, and the butt joint accuracy of the connecting contact at one end of the isolating rod on the other hand is improved on the other hand.

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.