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34results about How to "Improve arc extinguishing efficiency" patented technology

Circuit breaker with arc extinguishing mechanism

A circuit breaker having an arc extinguishing mechanism includes a plurality of grids disposed in a longitudinal direction, each having protruding portions at both ends thereof so as to define a space therebetween, a fixing portion to support the grids, insulating plates fixed to both sides of the grids, a stator located below the grids, the stator including an arc runner and a stationary contact disposed at an upper side of the arc runner, and a mover contactable with or separated from the stationary contact with moving up and down within the space, wherein an interval between the insulating plates within the space is shorter than a width of the mover.
Owner:LSIS CO LTD

Breaker provided with arc extinguishing mechanism with magnetic blowing and air-blowing functions

The invention provides a breaker provided with an arc extinguishing mechanism with magnetic blowing and air-blowing functions, and mainly aims at solving the problems of poor breaking capacity and poor arc extinguishing effect due to the fact that the arc extinguishing mechanism of the breaker only has the magnetic blowing function or the air-blowing function. The breaker is characterized by also comprising a magnetic blowing device (4) and a gas production plate (5), wherein the magnetic blowing device (4) and the gas production plate (5) are correspondingly arranged between a static contact (22) and an arc extinguish chamber (3) and are used for guiding an electric arc generated when a moving contact (21) is separated from the static contact (22) to the arc extinguish chamber (3). According to the breaker provided with the arc extinguishing mechanism with the magnetic blowing and air-blowing functions provided by the invention, a magnetic blowing mechanism and the gas production plate are also arranged between the static contact and the arc extinguish chamber; and the electric arc generated when the moving contact is separated from the static contact is guided to the arc extinguish chamber, so that the arc extinguishing efficiency is improved; and the breaking capacity is relatively high.
Owner:ZHEJIANG TENGEN ELECTRIC

Circuit breaker

The invention relates to a circuit breaker, which is characterized in that corresponding upper and lower rows of contact groups are respectively arranged on a moving contact and a static contact, thecontact group close to an arc extinguishing chamber is used as an arcing contact, the other contact group is used as a current-carrying contact, and the contact groups are separated by gas generationinsulating pieces to protect the current-carrying contact from being ablated by an electric arc; the gas generation insulating piece is installed on the contact, and a large amount of gas can be generated to push the arc to move towards the arc extinguishing chamber when the arc is generated, so that arc extinguishing efficiency is improved, and breaking capacity is improved; and an insulating flash barrier for dividing the arc is arranged in the arc extinguishing chamber to assist in arc extinguishing and cooling of the arc, and the arc can jump from the moving contact to an arc striking sheet quickly to run out of the arc by arranging the moving contact and the arc striking sheet close to each other. According to the invention, contacts are saved on the whole, and the arc extinguishing efficiency is improved.
Owner:XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO LTD

Contact operating mechanism of vacuum circuit breaker

The invention discloses a contact operating mechanism of a vacuum circuit breaker. The contact operating mechanism comprises an arc extinguishing chamber, one side of the arc extinguishing chamber isprovided with a static contact through a static conducting rod, the other side of the arc extinguishing chamber is provided with a moving contact through a moving conducting rod, and the moving conducting rod comprises a driving rod connected with a corrugated sleeve. A telescopic cavity is concentrically nested in the driving rod, a driven rod is installed in the telescopic cavity, and the drivenrod is connected with the moving contact. One end of the driving rod penetrates through the arc extinguishing chamber and is connected with a mechanical driving structure, and the driven rod extendsto the outer side of the arc extinguishing chamber along the telescopic cavity and is connected with the mechanical driving structure. The driving rod and the driven rod are firstly driven by the mechanical driving structure to integrally move to complete a preliminary opening process, and then the driven rod is driven by the mechanical driving structure to move towards the outer side of the arc extinguishing chamber along the telescopic cavity on the driving rod, so that the opening distance between the contacts is increased.
Owner:GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU +1

Circuit breaker arc-extinguishing chamber

The invention discloses a circuit breaker arc-extinguishing chamber which comprises a fixing plate and a plurality of arc chutes. The fixing plate comprises a bottom plate and two side plates symmetrically disposed at two opposite ends of the bottom plate. A plurality of exhaust passages are uniformly distributed on the bottom plate in the length direction of the bottom plate. A plurality of groups of fixing mechanisms are uniformly distributed on the side plates along the length direction of the side plates. The exhaust passages and the fixing mechanisms are successively staggered. The fixingmechanism includes a plurality of fixing holes uniformly distributed along the width direction of the side plate. The two opposite side ends of each arc chute are provided with fixed right angles recessed inward. Each fixed right angle is provided with a fixing block matching the fixing hole at a position corresponding to the fixing hole. One end of each fixing block penetrates through the corresponding fixing hole. The circuit breaker arc-extinguishing chamber is reasonable in structural design, good in impact resistance effect, good in heat dissipation effect, can improve arc extinguishingefficiency, and can improve the working stability of the circuit breaker when used.
Owner:GACIA ELECTRICAL APPLIANCE

Self-energy arc extinguishing chamber and circuit breaker employing same

ActiveCN109767950AReduce resistanceBalance the pressure difference inside and outsideHigh-tension/heavy-dress switchesAir-break switchesSulfur hexafluorideEngineering
The invention relates to a self-energy arc extinguishing chamber and a circuit breaker employing the same. The self-energy arc extinguishing chamber comprises a shell, wherein a piston cylinder barreland a piston cylinder bottom are arranged in the shell, a piston structure is arranged in the piston cylinder barrel and the piston cylinder bottom and moves in reciprocating way in response to breaking and closing operation of the arc extinguishing chamber, the piston structure, the piston cylinder barrel and the piston cylinder bottom form an air press chamber, a movable arc contact, a nozzle and an expansion chamber are arranged on the piston structure, the expansion chamber is corresponding to the movable arc contact and the nozzle, a pressure relief valve structure is arranged on the airpress chamber and is used for reducing pressure when the arc extinguishing chamber is broken, an air supplement passage is arranged on the air press chamber, and an air supplement valve structure isarranged on the air supplement passage and is opened to supplement air to the air press chamber when the arc extinguishing chamber is closed. The internal pressure of the air press chamber is abruptlyreduced during closing operation of the circuit breaker, the air supplement valve structure is opened, external sulfur hexafluoride gas rapidly enters the air press chamber through the air supplementpassage, the closing and air supplement operation is completed, the internal and external pressure difference is balanced, the closing resistance is effectively reduced, and the closing operation work is reduced.
Owner:HENAN PINGZHI HIGH VOLTAGE SWITCHGEAR +3

Fuse for power distribution system

The invention relates to the technical field of fuses, and discloses a fuse for a power distribution system. The fuse comprises an insulating part, a lower static contact is fixedly connected to the bottom end of one side of the insulating part, a lower moving contact is movably clamped to one side of the lower static contact, and a fusion tube is fixedly connected to the top end of the lower moving contact. A fuse wire assembly is movably connected in the fusion tube, the top end of the fuse wire assembly is in threaded connection with an upper moving contact, a support is fixedly connected to the top end of one side of the insulating part, an auxiliary hook is fixedly connected to the bottom end of one side of the support, and a contact spring is fixedly connected to one side of the support. The bottom end of the contact spring is fixedly connected with an abutting sheet, and the middle part of the inner side of the fusion tube is fixedly connected with an elastic plate. High pressure is formed through high temperature generated by fusing of the fuse assembly and gas generated by decomposition of the fuse assembly, so that the led-out insulating oil is heated to be decomposed and blown to the direction perpendicular to the electric arc, transverse blowing and longitudinal blowing can be combined, and the arc extinguishing efficiency is improved.
Owner:孙贵现

Circuit breaker

PendingCN111834162AArc extinguishing is sufficientIncrease arc speedHigh-tension/heavy-dress switchesAir-break switchesEngineeringContact system
The invention relates to a circuit breaker, and particularly relates to an improvement of an arc extinguishing system of the circuit breaker. The circuit breaker comprises a contact system, wherein the contact system comprises a moving contact and a static contact, a magnetism increasing assembly is arranged around the moving contact, and the magnetism increasing assembly is encircled to form a magnetism increasing space which approximately surrounds the static contact and the moving contact. Through reasonable arrangement of the magnetism increasing assembly, the moving contact and an arc running channel, the arc running speed of the arc is increased, the arc extinguishing efficiency is improved, the arc is fully extinguished by an arc extinguishing grid pieces, and meanwhile, the arc jumps to the arc running channel from the moving contact as soon as the moving contact is repelled, so that the situation that the moving contact is continuously ablated and the electrical service life is affected is prevented.
Owner:XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO LTD

High-breaking miniature circuit breaker

The invention discloses a high-breaking miniature circuit breaker, which comprises a handle structure, a tripping assembly, a contact structure and a driving structure which are arranged in a shell, wherein the tripping assembly comprises a rotating wheel rotatably arranged in the shell, the driving structure comprises a driving plate rotatably abutted between the rotating wheel and a moving contact component, and locking plates respectively arranged on the rotating path of the driving plate and the rotating path of the rotating wheel, the driving plate and the locking plates form locking matching in the switching-on rotating process, and the rotating wheel drives the locking plates and the driving plate to release the locking matching, so that the moving contact component is in instant contact with the static contact. According to the invention, the miniature circuit breaker adopting the technical scheme has the characteristics of quickly switching on and switching off a circuit, reducing the fusion welding risk of the contacts, being beneficial to shortening the arc extinguishing time between the moving contact and the static contact, reducing the electric corrosion to the contacts and prolonging the electrical service life, being capable of bearing high voltage compared with a traditional circuit breaker, being capable of well meeting the use requirements of a high-voltage circuit, and reducing the setting cost.
Owner:KEDU ELECTRIC CO LTD

An Arc Extinguisher Based on Segmented Insulators

The invention discloses an arc extinguishing device based on a segmented insulator, which belongs to the field of segmented insulators. It includes a suspension cable, a linear drive set on the suspension cable and slidably connected with the suspension cable, a grid bar set at the output end of the linear drive, and a control group connected to the linear drive. There are arc angles on both sides of the bottom of the grid bar group. The grid bar group is composed of multiple arc extinguishing grid bars arranged at the output end of the linear driver. The arc extinguishing grid bars are equipped with a fixed frame and the distance between adjacent arc extinguishing grid bars gradually increases along the direction close to the linear drive. The pitch also gradually increases along the direction approaching the linear actuator. On the basis of ensuring the horizontal space of the arc striking angle, the present invention makes full use of the longitudinal space of the arc striking angle to enhance the deionization of the arc, reduces the erosion and thermal effect of the arc on the electrode, protects the segmental insulator equipment, and guarantees the high-speed train safe operation.
Owner:SOUTHWEST JIAOTONG UNIV

Arc extinguishing device based on segmented insulator

The invention discloses an arc extinguishing device based on a segmented insulator, and belongs to the field of segmented insulators. The arc extinguishing device comprises a suspension cable, a linear drive arranged on the suspension cable and slidingly connected with the suspension cable, a grid bar group arranged at the output end of the linear drive and a control group connected to the lineardrive, arcing horns are arranged at the two sides of the bottom end of the grid bar group, the grid bar group is formed by a plurality of arc extinguishing grid bars arranged at the output end of thelinear drive, the arc extinguishing grid bars are provided with fixed frames, the distances between the adjacent arc extinguishing grid bars are gradually increased in a direction close to the lineardrive, and the distances of the arcing horns are gradually increased in a direction close to the linear drive. On the base of ensuring the lateral space of the arcing horns, the arc extinguishing device fully utilizes the longitudinal space of the arcing horns to enhance the de-freeing of the arc, reduces the erosion and heat of the arc on the electrode, protects the segmented insulator device, and ensures the safe running of the high-speed train.
Owner:SOUTHWEST JIAOTONG UNIV

Contact mechanism of low-voltage circuit breaker

InactiveCN111029191AQuick and efficient disconnectImprove securityElectric switchesDrive wheelStructural engineering
The invention discloses a contact mechanism of a low-voltage circuit breaker. The device comprises a driving wheel and an arc extinguishing chamber. A back surface of the driving wheel is fixedly connected with a driving device; a manual rotating rod is arranged on a front surface of the driving wheel; the driving wheel is engaged with two racks; the two racks are arranged in parallel; one end ofeach rack is fixedly connected with one end of a movable telescopic rod; the other end of the movable telescopic rod is fixedly connected with a movable contact piece; the number of arc extinguishingchambers is two, the arc extinguishing chambers correspond to respective racks; first springs are arranged in the arc extinguishing chambers; the other end of each first spring is fixedly connected with a static contact piece; a plurality of arc extinguishing sheets are uniformly arranged on inner walls of the arc extinguishing chambers at equal intervals; and another end of each rack is fixedly connected with a limiting rod, the limiting rod is sleeved with a positioning pipe, and the movable telescopic rods, the racks, the limiting rods and the positioning pipes are hollow structures. The contact mechanism has the advantages that safety guarantee measures are provided, the safety performance of the circuit breaker is enhanced, and the arc extinguishing effect is better.
Owner:NANJING APAITEK TECH

Method for improving arc extinguishing efficiency of multi-cavity structure by using magnetic field

ActiveCN113054534AReduce sizeShorten the extinguishing timeSpark gap detailsOvervoltagePlasma
The invention relates to the technical field of overvoltage protection devices, in particular to a method for improving the arc extinguishing efficiency of a multi-cavity structure by using a magnetic field, which can improve the performance of the multi-cavity arc extinguishing structure. According to the method for improving the arc extinguishing efficiency of the multi-cavity structure by using the magnetic field, when the multi-cavity structure is broken down to generate the arc, movement of the arc plasma in the structure can be further accelerated, the arc ejection and extinguishing time is shortened, and the arc extinguishing efficiency is improved. A non-constant magnetic field is arranged on the basis of an original chamber structure, the magnetic induction intensity of the magnetic field is 0.15 T, and the direction of the magnetic field is perpendicular to the central axis between electrodes in an arc extinguishing chamber unit and the central axis of a chamber nozzle. Through the magnetic field, on the basis of pneumatic pressure acceleration, the electric arc plasma is subjected to Lorentz force in the direction of the nozzle, the movement of the electric arc plasma is accelerated, the electric arc spraying and extinguishing time is shortened, and therefore the arc extinguishing efficiency of the multi-cavity structure is improved.
Owner:云南电网有限责任公司德宏供电局 +1

Arc extinguishing type switch device

The invention discloses an arc extinguishing type switch device which comprises an insulating shell, a threaded cover and a wiring cylinder, the top of the insulating shell is sleeved with the threaded cover in a threaded mode, a threaded ring is fixed to the middle of the threaded cover in a penetrating mode, a connecting rod penetrates through the middle of the threaded ring in a threaded mode, and a plurality of stirring blades are fixedly installed on the surface of the middle of the connecting rod. The bottom of the connecting rod is sleeved with a rubber disc in a threaded mode. Two wiring cylinders are fixed to the side face of the insulating shell in a penetrating mode, a conducting rod is embedded into one end of each wiring cylinder in a threaded mode, the bottom of the inner wall of the insulating shell extends inwards to form a lining ring, and the bottom of the insulating shell is sleeved with a mounting cylinder in a threaded mode. The insulating shell is filled with conducting media with uncertain shapes and transformer oil, and the liquid level of the conducting media can ascend and descend to immerse the two conducting rods to be connected. The liquid level of the conducting medium rises to immerse the end parts of the two conducting rods, so that the two conducting rods form a current loop, and stable wiring of the two conducting rods can be ensured through a fixed and liquid connection mode.
Owner:李瑶

Circuit breakers and power distribution systems

The present invention provides a breaker and a distribution system. The breaker comprises a contact mechanism, an electromagnetic trip mechanism and an arc extinction mechanism. The contact mechanism can break off the fault current in a circuit; the electromagnetic trip mechanism comprises a static iron core, a movable iron core and a coil, the coil is arranged to generate an electromagnetic field when fault current is received to allow the static iron core to drive the movable iron core to perform motion along the axial direction to generate thrust for prompting the contact mechanism to release; the arc extinction mechanism is configured to cut off the arc generated when the contact mechanism breaks off the fault current, wherein the electromagnetic trip mechanism and the arc extinction mechanism are arranged at the same side of the contact mechanism, the electromagnetic trip mechanism is arranged in an inclination mode relative to the arc extinction mechanism to allow the distance between the end portion, far away from the contact mechanism, of the electromagnetic trip mechanism and the arc extinction mechanism to be larger than the distance between the end, close to the contact mechanism, of the electromagnetic trip mechanism and the arc extinction mechanism. The installation space of the arc extinction mechanism of the breaker is increased, and the breaking capacity of the breaker is improved.
Owner:SOOAR TIANJIN ELECTRICAL EQUIP CO LTD

Double-backflushing compression combined arc extinguishing lightning protection device

The invention discloses a double-backflushing compression combined arc extinguishing lightning protection device, which comprises a semi-closed hollow cylinder with an opening in the upper end, wherein an upper backflushing pipeline (12), a middle compression arc extinguishing pipeline (13) and a lower backflushing pipeline (14) are sequentially arranged in the semi-closed hollow cylinder from topto bottom, the bottom of the upper backflushing pipeline (12) and the top of the lower backflushing pipeline (14) are each provided with a lightning arrester (1), a plurality of compression pipes (2)are arranged in the middle compression arc extinguishing pipeline (13), and a through hole is formed in the pipe wall of the bottom of the lower backflushing pipeline (14). According to the invention, the whole device is connected to the two ends of an insulator in parallel, and the breakdown voltage of the protected insulator string is greater than that of the parallel gap, so that the parallelgap is broken down preferentially when the power transmission line is struck by lightning, and flashover of the insulator is avoided.
Owner:王巨丰

An arc extinguishing and lightning protection insulator

The invention discloses an arc extinguishing and lightning protection insulator which comprises a foot ball, an insulator body, an arc extinguishing channel, a plurality of skirt hems and an arc blocking skirt hem, wherein the foot ball is fixedly connected with the insulator body; an arc striking electrode (11) is arranged at the top of the insulator body (1); the arc striking electrode is embedded in the foot ball; a cap groove is formed in the bottom of the insulator body; the arc extinguishing channel is spirally formed in the surface of the insulator body; the skirt hems are fixedly arranged on the insulator body; an arc blocking fence is arranged in the arc blocking skirt hem; the diameters of the skirt hems and the arc blocking skirt hem are 300 to 450 mm; arc guiding metal balls are fixedly arranged in the arc extinguishing channel at a certain distance; and in an inner cavity of the arc extinguishing channel, the arc striking electrode is connected with the first arc guiding metal ball in the arc extinguishing channel through a lead wire, and the last arc guiding metal ball is connected with the bottom of the arc extinguishing channel through the cap groove.
Owner:GUANGXI UNIV +3

Complete set of power switch equipment

The invention discloses a complete set of power switch equipment, which comprises a cavity with a forward opening in a shell, the left wall of the cavity is communicated with the left surface of the shell through a channel with a fan, the opening of the cavity is rotatably connected with a sealing door, the sealing door is provided with a handle groove, the top wall of the cavity is fixedly provided with a heat collection bin, a heat collection cavity with a downward opening is formed in the heat collection bin, and an early warning device capable of preventing the switch from being overheated is arranged in the heat collection cavity. Bidirectional arc extinguishing equipment is arranged at the on-off position of the switch equipment, the arc extinguishing efficiency of the arc is improved through cutting and cooling spraying of the arc, arc extinguishing can be carried out on the switch equipment at the moment of switching on and switching off a circuit, a fire disaster is prevented, and a better fire disaster prevention effect is achieved through arrangement of thermal deformation metal. When the temperature of the switch equipment reaches an early warning temperature, all channels are closed to isolate air, so that the box has insufficient oxygen to burn, and the purpose of completely eradicating fire disasters is achieved.
Owner:厦门炎铭棋贸易有限公司

A contact direct acting molded case circuit breaker

The invention provides a contact direct-acting molded case circuit breaker, which comprises a shell, and an input terminal, an output terminal, a static contact, a moving contact, a magnetism tripping mechanism, a thermal tripping mechanism and the like located in the shell, wherein the static contact is connected with the input terminal; a handle is connected with a moving contact driving mechanism; the moving contact is connected with the moving contact driving mechanism and is connected with the output terminal through the magnetism tripping mechanism and the thermal tripping mechanism; and the magnetism tripping mechanism and the thermal tripping mechanism are matched with the moving contact driving mechanism for use. The contact direct-acting molded case circuit breaker is characterized in that a sliding way is arranged on the moving contact driving mechanism; the moving contact can move along the linear sliding way; and the static contact is located on the extending line of the sliding way. The contact direct-acting molded case circuit breaker has the beneficial effects that a rotation swinging movement mode is changed to a linear movement mode for the moving contact, direct strike of the moving contact enables generated arcs to be directly in an arc extinguishing sheet direction, the arc extinguishing efficiency can be greatly improved, and the breaking capacity of the switch is improved.
Owner:TIANJIN JIAMEITE ELECTRIC EQUIP CO LTD

A circuit breaker with arc extinguishing function

The invention relates to a circuit breaker with an arc extinguishing effect. The circuit breaker comprises a shell, a moving contact, a fixed contact and an arc extinguishing chamber arranged in the shell, wherein the arc extinguishing chamber comprises an insulating box body and metal grid plates; a through groove for moving the moving contact up and down is reserved in each metal grid plate; thefixed contact is located at the lower part of the through groove; the edge parts of the metal grid plates are connected with the insulating box body; the metal grid plates are of a stepped structure;the thickness of a far end, relative to the fixed contact, of each metal grid plate is greater than that of a near end; a plurality of bumps are arranged on the surfaces of the metal grid plates; andthe bumps on the adjacent metal grid plates are oppositely arranged. The circuit breaker is provided with the arc extinguishing chamber, so that the circuit breaker can play a quick arc extinguishingrole in arcs and the service life of the circuit breaker is prolonged.
Owner:国网河南省电力公司武陟县供电公司 +1

Breaker and distribution system

The present invention provides a breaker and a distribution system. The breaker comprises a contact mechanism, an electromagnetic trip mechanism and an arc extinction mechanism. The contact mechanism can break off the fault current in a circuit; the electromagnetic trip mechanism comprises a static iron core, a movable iron core and a coil, the coil is arranged to generate an electromagnetic field when fault current is received to allow the static iron core to drive the movable iron core to perform motion along the axial direction to generate thrust for prompting the contact mechanism to release; the arc extinction mechanism is configured to cut off the arc generated when the contact mechanism breaks off the fault current, wherein the electromagnetic trip mechanism and the arc extinction mechanism are arranged at the same side of the contact mechanism, the electromagnetic trip mechanism is arranged in an inclination mode relative to the arc extinction mechanism to allow the distance between the end portion, far away from the contact mechanism, of the electromagnetic trip mechanism and the arc extinction mechanism to be larger than the distance between the end, close to the contact mechanism, of the electromagnetic trip mechanism and the arc extinction mechanism. The installation space of the arc extinction mechanism of the breaker is increased, and the breaking capacity of the breaker is improved.
Owner:SOOAR TIANJIN ELECTRICAL EQUIP CO LTD

Contact direct-acting molded case circuit breaker

The invention provides a contact direct-acting molded case circuit breaker, which comprises a shell, and an input terminal, an output terminal, a static contact, a moving contact, a magnetism tripping mechanism, a thermal tripping mechanism and the like located in the shell, wherein the static contact is connected with the input terminal; a handle is connected with a moving contact driving mechanism; the moving contact is connected with the moving contact driving mechanism and is connected with the output terminal through the magnetism tripping mechanism and the thermal tripping mechanism; and the magnetism tripping mechanism and the thermal tripping mechanism are matched with the moving contact driving mechanism for use. The contact direct-acting molded case circuit breaker is characterized in that a sliding way is arranged on the moving contact driving mechanism; the moving contact can move along the linear sliding way; and the static contact is located on the extending line of the sliding way. The contact direct-acting molded case circuit breaker has the beneficial effects that a rotation swinging movement mode is changed to a linear movement mode for the moving contact, direct strike of the moving contact enables generated arcs to be directly in an arc extinguishing sheet direction, the arc extinguishing efficiency can be greatly improved, and the breaking capacity of the switch is improved.
Owner:TIANJIN JIAMEITE ELECTRIC EQUIP CO LTD

High-power high-voltage direct-current contactor

The invention discloses a high-power high-voltage direct-current contactor. The high-power high-voltage direct-current contactor comprises a base, a shell and an arc extinguishing cover, the arc extinguishing cover is clamped on the base, and the base and the arc extinguishing cover form an arc extinguishing cavity. A fixed contact and a moving contact are arranged in the arc extinguishing cavity,the fixed contact is fixedly arranged on the arc extinguishing cover, and the cross section of the moving contact is an equilateral trapezoid. The small end of the moving contact is opposite to the fixed contact, and the large end of the moving contact is fixedly arranged on a moving contact iron. The moving contact iron is arranged to be of a three-dimensional structure, and the electric arcs generated by the moving contact and the static contact are lengthened, so that the arc extinguishing efficiency is improved, and the arc extinguishing effect is improved. The magnetic steel is arrangedbetween the moving contacts and at the two sides of the moving contacts, so that an effective magnetic field is increased, and the rapid arc extinguishing can be achieved. Through the reinforcing connecting rod arranged on a take-up frame and the buckle arranged on the base, the explosion-proof protection is carried out on the arc extinguishing cover, and therefore the potential safety hazards arereduced.
Owner:炬恩电气(上海)有限公司

A method of using magnetic field to improve arc extinguishing efficiency of multi-chamber structure

ActiveCN113054534BReduce sizeShorten the extinguishing timeSpark gap detailsOvervoltageEngineering
The invention relates to the technical field of overvoltage protection devices, in particular to a method for improving the arc-extinguishing efficiency of a multi-chamber structure by using a magnetic field, which can improve the performance of the multi-chamber arc-extinguishing structure. The method of improving the arc extinguishing efficiency of the multi-chamber structure proposed in the present invention can further accelerate the movement of the arc plasma in the structure when the multi-chamber structure is broken down to generate an arc, shorten the arc ejection and extinguishing time, and improve Arc extinguishing efficiency. In the present invention, a non-constant magnetic field is set on the basis of the original chamber structure, the magnetic induction intensity of the magnetic field is 0.1~5T, and the direction of the magnetic field is perpendicular to the central axis between the electrodes in the arc extinguishing chamber unit and the central axis of the chamber nozzle. Through the magnetic field, on the basis of the acceleration of the pneumatic pressure, the arc plasma can be subjected to the Lorentz force in the direction of the nozzle, accelerate the arc plasma movement, shorten the arc ejection and extinguishing time, so as to improve the arc extinguishing efficiency of the multi-chamber structure .
Owner:YUNNAN POWER GRID CORP DEHONG POWER SUPPLY BUREAU +1

A Complete Set of Circuit Breakers for Quick Closing and Opening

The invention discloses a complete set of circuit breaker for fast closing and opening, which comprises: a casing, which is generally box-shaped; a power transmission part, which is arranged on the casing, and the power transmission part includes a power part and a transmission part, The power part is arranged on the casing, and the transmission part is arranged on the power part; the power part includes a transmission rod, a motor and a manual control part, both the transmission rod and the motor are arranged on the housing, and the manual control part is arranged on the transmission rod. The connection and disconnection part is arranged on the casing, the connection and disconnection part includes a terminal, a connecting rod and a connecting piece, the connecting post and the connecting rod are both arranged on the casing, and the connecting part is arranged on the transmission part ; The power part controls the disconnection part through the transmission part to realize the opening and closing of the circuit breaker. The invention has the advantages of simple structure, reasonable structure design, reliable operation, safe use, high arc extinguishing efficiency, and can quickly complete opening.
Owner:UONONE GRP JIANGSU ELECTRICAL CO LTD

A self-energy type arc extinguishing chamber and a circuit breaker using the same

The invention relates to a self-energy arc extinguishing chamber and a circuit breaker employing the same. The self-energy arc extinguishing chamber comprises a shell, wherein a piston cylinder barreland a piston cylinder bottom are arranged in the shell, a piston structure is arranged in the piston cylinder barrel and the piston cylinder bottom and moves in reciprocating way in response to breaking and closing operation of the arc extinguishing chamber, the piston structure, the piston cylinder barrel and the piston cylinder bottom form an air press chamber, a movable arc contact, a nozzle and an expansion chamber are arranged on the piston structure, the expansion chamber is corresponding to the movable arc contact and the nozzle, a pressure relief valve structure is arranged on the airpress chamber and is used for reducing pressure when the arc extinguishing chamber is broken, an air supplement passage is arranged on the air press chamber, and an air supplement valve structure isarranged on the air supplement passage and is opened to supplement air to the air press chamber when the arc extinguishing chamber is closed. The internal pressure of the air press chamber is abruptlyreduced during closing operation of the circuit breaker, the air supplement valve structure is opened, external sulfur hexafluoride gas rapidly enters the air press chamber through the air supplementpassage, the closing and air supplement operation is completed, the internal and external pressure difference is balanced, the closing resistance is effectively reduced, and the closing operation work is reduced.
Owner:HENAN PINGZHI HIGH VOLTAGE SWITCHGEAR +3

Circuit breaker with arc extinguishing effect

The invention relates to a circuit breaker with an arc extinguishing effect. The circuit breaker comprises a shell, a moving contact, a fixed contact and an arc extinguishing chamber arranged in the shell, wherein the arc extinguishing chamber comprises an insulating box body and metal grid plates; a through groove for moving the moving contact up and down is reserved in each metal grid plate; thefixed contact is located at the lower part of the through groove; the edge parts of the metal grid plates are connected with the insulating box body; the metal grid plates are of a stepped structure;the thickness of a far end, relative to the fixed contact, of each metal grid plate is greater than that of a near end; a plurality of bumps are arranged on the surfaces of the metal grid plates; andthe bumps on the adjacent metal grid plates are oppositely arranged. The circuit breaker is provided with the arc extinguishing chamber, so that the circuit breaker can play a quick arc extinguishingrole in arcs and the service life of the circuit breaker is prolonged.
Owner:国网河南省电力公司武陟县供电公司 +1
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