33results about How to "Good for arc extinguishing" patented technology

The invention discloses a non-polar hydrogen mixed gas DC (direct-current) arc extinction system for a DC contactor. The DC arc extinction system comprises a moving contact, four pairs of moving and static arc striking contacts, a static contact, a grid group and a permanent magnet. The non-polar hydrogen mixed gas DC arc extinction system is non-polar, namely the arc extinguishing property can not be influenced by the change of the current direction. According to the non-polar hydrogen mixed gas DC arc extinction system, the arc striking contacts strike electric arc to smoothly move along a track of the arc striking contacts, the arc striking contacts, the grid group and the permanent magnet are reasonably arranged, and the electric arc between the moving contact and the static contact is better and rapidly extinguished, thus the short circuit caused by sudden reversing of current is solved, and the breaking capacity is further improved. Hydrogen or a hydrogen mixed gas can be inflated into the non-polar hydrogen mixed gas DC arc extinction system for realizing arc extinguishing.

The invention discloses an arc guiding and extinguishing apparatus, as well as a DC breaker using the arc guiding and extinguishing apparatus. The arc guiding and extinguishing apparatus comprises a U-shaped motor groove and an arc extinguishing cover component which are mutually connected, wherein a U-shaped magnet yoke is arranged in a hollow cavity of the U-shaped motor groove; a magnetic material block is respectively arranged on each side of the upper sides of two sidewalls of the magnet yoke; and a reversed U-shaped magnetic path is formed by the magnetic material blocks and an arc extinguishing grid sheet in the arc extinguishing cover component. The magnetism generated by the current in a conductive circuit in the U-shaped magnet yoke and the reversed U-shaped magnetic path has a strong magnetic blowing force on the arc which is instantly generated when a movable contact and a static contact are released from contact, so as to blow the arc into the arc extinguishing cover component to extinguish the arc. With the adoption of the arc guiding and extinguishing apparatus, as well as the DC breaker using the arc guiding and extinguishing apparatus, the problem that the arc guiding effect on the arc near to the dynamic contact by the arc guiding device in the prior art is poor is solved; and the arc guiding and extinguishing apparatus, as well as the DC breaker using the arc guiding and extinguishing apparatus is excellent in arc guiding effect, strong in arc extinguishing ability, short in arc spraying distance and wide in application range for all arcs between the dynamic contact and the static contact.

The invention relates to a high-voltage vacuum breaker which consists of a framework, a principal shaft, an operating mechanism and a four-connecting-rod assembly thereof, a principal loop and a separating brake buffer. The principal loop is provided with a spring cover and a guide bar of a contact spring; contact surface of the upper and lower contacts are changed into spherical contact; and actuating length of the piston rod of the separating brake buffer is 21-24mm. The high-voltage vacuum breaker of the invention has the advantages that guide length of the upper conducting rod is extended; swing of the upper contact and the upper conducting rod, namely, influence of axial and side force is reduced; and axial characteristic of motion is improved. Contact surface of the upper and lower contacts are changed into spherical contact, thereby increasing contact surface to facilitate arc blowout when the brake is separated. Actuating length of the piston rod of the separating brake buffer is changed, so as to contact connecting lever of the principal shaft with the upper separating brake buffer when the two contacts are separated for 2mm. Therefore, the high-voltage vacuum breaker reduces brake separating speed and limits separate-to-bottom time to approximately 20ms, so as to obtain stable brake separating characteristic and ensure reliability of breaking current of the high-voltage vacuum breaker. Therefore, the brake separation motion better satisfies requirements of the high-voltage vacuum breaker on electric property.

The invention relates to a novel composite material. The composite material comprises fluoroplastic which is adopted as a base material, and a specific inorganic filler. The composite material is expected to generate electronegative elements to limit arc current and absorb arc energy so as to promote arc extinguishing.

The invention discloses an arc control device which comprises shells made of insulating material and a plurality of grate sheets, wherein, each of the grate sheets is provided with two side arms, a slot matched with the side arms of the grate sheets is arranged on the inner walls of the shells, the two shells are respectively sheathed on the two side arms of the grate sheets, the back of the shells is opened, the shells are also internally provided with plug jacks connected with the slot, and the front end parts of the side arms are inserted into the plug jacks. As the two side arms of the grate sheets are respectively sheathed with a shell, and the front end parts of the side arms are inserted into the plug jacks of the shell, so that the arc control device plays good role of protection, and avoids the grate sheets being burnt and damaged by voltaic arc. Meanwhile, the gaseous substance emitted by the insulating shell is beneficial to arc extinction.

This invention relates to one high voltage breaker linear motor operation structure, which belongs to transducer device technique field, which comprises linear motor and its servo controller, wherein, the linear motor secondary or high voltage breaker dynamic probe are connected through isolation pull bar; the linear motor is connected to speed sensor and servo controller through isolation pull bar.

The invention discloses an arc extinguishing device of a circuit breaker, and relates to the technical field of the circuit breaker. The arc extinguishing device is arranged in a circuit breaker casing, and comprises an arc extinguishing cover. The device is characterized in that the arc extinguishing cover is made of a three-surface enclosure vulcanized paper sheet with enlarged integral size, the interior of the arc extinguishing cover is provided with 14 arc striking plates which are used for separating electric arcs from cooling the electric arcs, the wire inlet end of the arc extinguishing device also comprises a connecting plate, the connecting plate is a triangular loop meeting a right hand rule, and each arc striking plate is provided with a Y-shaped opening with enlarged size to facilitate the electric arcs to enter. The arc extinguishing device has the advantages that the capability of separating the electric arcs from cooling the electric arcs is improved, the connecting plate at the wire inlet end adopts the triangular loop design meeting the right hand rule, a strong arc blowing magnetic field is always formed for alternating current, the electric arcs are forced to quickly enter an arc extinguishing chamber, the movement time of the electric arcs is shortened, and the arc extinguishing effect is greatly improved; the structure is simple, the economy is good, and the opening capability of the circuit breaker is obviously improved.

A large open-distance dual-power automatic transfer switch comprises an electromagnet drive mechanism, a lever transmission mechanism and a contact arc extinguishing mechanism, wherein the lever transmission mechanism comprises a transmission lever and an action arm, a fulcrum shaft is arranged in the middle of the transmission lever, a force end is provided with a force point groove, a resistanceend is provided with a blocking shaft, the action arm is set to an L shape, one end of the action arm is provided with a waist hole, and the other end is vertically fixed with a movable contact shaft. The common power transmission lever and the backup power transmission lever are oppositely disposed in the installation base plate by the lever cover, and the end of the movable contact shaft of theaction arm is sleeved on the installation base plate, and the waist hole on the action arm is sleeved in the blocking shaft of the resistance end of the transmission lever. Due to the special structure of the lever transmission mechanism, the rotation shaft equipped with the movable contact can obtain a rotation angle of 36 degrees, so that the opening distance of a dynamic contact and a static contact of the dual-power supply reaches 23mm, which is beneficial to the arc extinguishing of the contact arc extinguishing mechanism of the dual power, and improves the breaking and arc extinguishingcapability and working stability of the dual power.

The invention relates to a PC-level dual-power automatic transfer switch, Includes mounting base plate, A common power supply electromagnet conversion operating mechanism and a standby power supply electromagnet conversion operating mechanism are arranged on both sides of the mounting base plate, and an arc extinguishing chamber and a dual-power intelligent controller arranged on the mounting bottom plate and on the upper part of the contact system, As the double power supply adopts the lever-connecting rod operating mechanism with special structure, When the dual supply side is in place, themechanism automatically locks the closing position by the reverse torque of the actuating link, At that same time, the mechanism can increase the contact pressure when the switch is closed and the contact open distance when the switch is opened, so that the dual power supply has excellent electric performance and the work stability of the dual power supply is greatly improved.

The invention relates to a fully-insulated enclosed fuse comprising a rubber pedestal. An upper static contact is arranged at the upper part inside an outer insulating porcelain insulator; and an upper auxiliary spring is arranged inside the upper static contact. An arc extinguishing tube is arranged at the lower part of the upper static contact; and an arc extinguishing rod is arranged in the arcextinguishing tube. An upper moving contact is arranged at the lower end of the arc extinguishing rod and is connected with a fusion tube by a fusion tube connecting element. An arc shrinkage bar isarranged at the upper part inside the fusion tube and is connected with a fuse wire. A buffer cover is arranged at the upper part outside the fusion tube; a lower static contact is arranged at the inner side of the buffer cover; and a lower moving contact is arranged outside the fusion tube. The lower inner pipe of the fusion tube has a segmented stepped structure with the larger bottom and the smaller top. Besides, a fuse wire connection boss is arranged at one side with the central line corresponding to the straight line of the outer wall of the lower moving contact. The fully-insulated enclosed fuse has advantages of stable operation, high usage safety and reliability, powerful product carrier and breaking capabilities, and long service life.

The invention provides a highly explosion-proof rocker switch. A switch chamber thereof is separated from a rocker by a panel of a housing; the switch chamber has a closed structure; an iron plate is pressed above a movable contact spring; magnets are mounted at two ends of the rocker and used for attracting the iron plate to rock along with the movable contact spring; and the inner cavity of the switch chamber is filled with transformer oil or silicon oil. The magnets are used for driving the movable contact spring, the switch chamber can be sealed completely without any mechanical transmission parts, and the switch chamber is full of the transformer oil, thereby preventing external explosible gas from infiltrating or contacting electrical components, and achieving high explosion prevention. Besides, the transformer oil is good for arc extinction, and the electrical service life of the switch can be prolonged. The invention has the advantages of quiet action, small size and long service life.

The invention discloses a fuse, which comprises an insulating shell and a fuse main body, wherein a plurality of separated containing cavities are arranged in the insulating shell, the fuse main body comprises a fusing part and conductive electrodes located at the two ends of the fusing part, the fusing part comprises a plurality of fuse bodies connected end to end, each fuse body is correspondingly arranged in the corresponding containing cavity, and the conductive electrode extends out of the insulating shell. The safety performance of the fuse provided by the invention is higher.

The invention provides an intelligent miniature circuit breaker arc extinguishing device which comprises an arc extinguishing mechanism, and the arc extinguishing mechanism comprises an arc extinguishing chamber, a movable arc striking sheet and a static arc striking sheet. The arc extinguishing mechanism is covered with the arc extinguishing cover with the closed periphery so that the air pressure of the arc extinguishing chamber is increased, pressure difference is formed between the arc extinguishing chamber and the outside, and airflow is smoothly exhausted from the exhaust port. Two ends of the arc extinguishing cover are respectively provided with an air inlet and an air outlet; the air inlet faces an area between the moving contact assembly and the static contact assembly; and the exhaust port faces an area between the two groups of wire inlet terminals. The independent arc extinguishing cover is additionally arranged outside the arc extinguishing mechanism so that electric arcs can be effectively isolated from a circuit board and electronic elements, the electric arcs are prevented from damaging the circuit and the electronic elements, a relative high voltage can be rapidly formed in the arc extinguishing chamber, the gas in the arc extinguishing chamber can be rapidly exhausted, and arc extinguishing is facilitated; meanwhile, the arc striking sheet is an arc-shaped structure so that the arc is easy to move into the arc extinguishing chamber, and the breaking capacity is improved.

The invention discloses a relay. The relay comprises an enclosure, a bottom plate and a driving device, wherein two static contacts are arranged on the enclosure and are isolated with each other, two contact parts are arranged on the bottom plate, are corresponding to the two static contacts and are spaced with each other for isolation, a cavity is formed in the bottom plate, a fuse is arranged in the cavity, the fuse is connected with the two contact parts so that the two contact parts are electrically connected, the bottom plate is movably arranged in the enclosure between a connection position and a disconnection position, the two contact parts and the two static contacts are respectively abutted to make the two static contacts connected when the bottom is at the connection positions, and the two contact parts are separated from the two static contacts to make the two static contacts disconnected when the bottom plate is the disconnection position. According to the relay disclosed by the embodiment of the invention, the effects of overload protection and short-circuit protection are achieved by the fuse, so that the safety of a circuit system with the relay is improved, and a fire caused by overcurrent or short circuit is prevented.