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

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.

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.

The invention discloses a circuit breaker, which includes a mechanism box and an arc extinguishing chamber. A rack groove is provided at one end of the moving groove, and a rack is movably installed at one end of the rack groove. One end of the push gear is movably installed on one end of the push plate, and one end of the rack is movably installed with a rotating support rod. A limit screw is installed inside the rack slot through a threaded hole. A rectangular cylinder is fixedly installed in the middle, and a limit cylinder is installed movable inside the rectangular cylinder. A fixed screw is installed at one end of the rectangular cylinder through a threaded hole. Compared with the prior art, the beneficial effect of the present invention is that the arc can be quickly cut off, thereby achieving rapid extinguishment. The purpose of the arc is to improve the efficiency of arc extinguishing, and at the same time reduce the heat generated during arc extinguishing, prolong the service life of the circuit breaker, and effectively avoid the situation that the circuit breaker is burned due to high temperature of the circuit breaker.

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.

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.

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.

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.

The invention provides a permanent-magnet contactor arc extinguishing device comprising vertical columns, rollers, a guide rail, an alumina ceramic piece, a ceramic piece fixing device, an electromagnetic operating mechanism, second permanent magnets, a moving contact, a static contact, and insulators. The ceramic piece fixing device connects the alumina ceramic piece to the electromagnetic operating mechanism which is used to control movement of the alumina ceramic piece. The alumina ceramic piece moves along the guide rails, and the alumina ceramic piece is arranged between the moving contact and the static contact. One vertical column is fixed at each of the two sides of the alumina ceramic piece. The upper surface of the alumina ceramic piece is equipped with the two fixed rollers. When the rollers move to below the moving contact, the height by which the moving contact is lifted is greater than the thickness of the alumina ceramic piece, so that friction between the alumina ceramic piece and the moving contact is prevented. The insulators are fixed on the static contact, and the second permanent magnets are fixed on the insulators. The second permanent magnets are disposed below the moving contact and spaced from the moving contact.