20results about How to "Improve arc extinguishing efficiency" patented technology

The utility model relates to the field of low-voltage electric appliances, in particular to an arc extinguishing mechanism, which comprises an arc extinguishing chamber and a static contact which are matched for use, and the arc extinguishing chamber comprises at least two arc extinguishing grid sheets which are arranged side by side at intervals along a first direction; the static contact comprises a static contact knife and a static wiring board which are connected in a bending mode, the static contact knife and the static wiring board are integrally of an L-shaped structure, the static wiring board is located on one side of the arc extinguish chamber and arranged side by side with the arc extinguish grid pieces in the first direction, the static contact knife extends in the first direction, one end of the static contact knife is connected with the static wiring board in a bending mode, and the other end of the static contact knife extends towards an arc inlet of the arc extinguish chamber. The arc extinguishing mechanism is good in arc extinguishing performance.

The utility model relates to an arc extinguishing system and a rotary disconnecting switch, the arc extinguishing system comprises an integrated injection molding arc extinguishing cover, the arc extinguishing cover comprises two opposite side plates and a separator plate connected between the two side plates, a plurality of grid sheets are arranged between the two side plates, the inner sides of the two side plates are respectively provided with a mounting groove for mounting the grid sheets, and the two side plates are provided with a plurality of through holes. The partition plate is provided with receding holes corresponding to the mounting grooves in the two side plates respectively, the receding holes are communicated with the corresponding mounting grooves, a mold core used for injection molding of the mounting grooves in the side plates is parallel to the side plates, the mold core can penetrate through the partition plate from the receding holes, and a mold core perpendicular to the side plates does not need to be arranged in an injection molding machine. Core pulling from the side faces of the side plates during mold opening of the injection molding machine is avoided, the mold opening steps can be reduced, the output efficiency can be improved, the production cost can be reduced, and the structural strength of the arc extinguishing cover can be improved. The rotary disconnecting switch comprises the arc extinguishing system, and the cost of the rotary disconnecting switch can be reduced through the arc extinguishing system.

The invention relates to a contact structure of a longitudinal magnetic circuit breaker, which can solve the problem that the contact structure of the longitudinal magnetic circuit breaker in the related technology is difficult to give consideration to good arc extinguishing effect and mechanical strength, the contact structure of the longitudinal magnetic circuit breaker comprises a contact cup, a screw mechanism and a contact blade, the contact cup is provided with an accommodating cavity and a cup opening, the screw mechanism is embedded in the accommodating cavity, and the cup opening is provided with an opening. The spiral mechanism is provided with at least two spiral grooves, the spiral grooves are spirally arranged around the axial direction of the contact cup, at least part of the spiral mechanism protrudes out of the cup opening in the axial direction of the contact cup, the contact piece abuts against the spiral mechanism in the axial direction of the contact cup, and the contact piece is configured to be capable of compressing the spiral mechanism in the axial direction of the contact cup till the spiral mechanism abuts against the cup opening for limiting.

The invention relates to the technical field of low-voltage electric appliances, in particular to a magnetic drive arc structure and a direct-current arc extinguishing system.The magnetic drive arc structure comprises an arc extinguishing chamber, one side of the arc extinguishing chamber is provided with a static arc angle, the static arc angle is connected with a static conducting rod, and the static conducting rod is provided with a static contact; the other side of the arc extinguish chamber is provided with a movable arc angle and is sequentially connected with a movable contact and a movable conducting rod; a first magnetizer and a first permanent magnet are sequentially arranged on the static conducting rod; a second permanent magnet and a second magnetizer are sequentially arranged on the movable arc angle; the polarities of the opposite polar surfaces of the first permanent magnet and the second permanent magnet are opposite. Through cooperation of the two magnetizers, the two permanent magnets, the moving arc angle and the static arc angle, special three-dimensional magnetic field distribution is generated in the arc motion chamber, direct current arcs in two directions can rapidly move towards the arc extinguish chamber, breaking of high-voltage non-polarity direct current is achieved, the structure is simple, and cost is low. The problems that in the prior art, a high-voltage electrodeless direct current breaking structure is complex in design and high in cost are solved.

The utility model discloses a moving and static contact connecting mechanism of an isolating switch, which relates to the technical field of isolating switches and comprises a bearing frame, a driving rod, a first insulating column, a first contact piece and a second traction rod. The brake control mechanism comprises a driving rod, a connecting brake rod, a first traction rod, a first insulating column and a second traction rod, the driving rod is connected with an external driving assembly to provide power for the first traction rod, the first insulating column and the second traction rod to drive the connecting brake rod to achieve the opening and closing functions, the optimal design of an arc extinguishing block and the application of a high-performance material are achieved, and the service life of the arc extinguishing block is prolonged. Therefore, the arc extinguishing efficiency is greatly improved, the damage of the arc to the contact and the surrounding parts is reduced, the maintenance cost is reduced, and the overall service life of the isolating switch is prolonged.

The utility model relates to the field of electrical engineering, in particular to a molded case circuit breaker efficient arc extinguishing device based on cooperation of magnetic blowing and air blowing, which comprises a molded case, a rotating shaft, a first contact, a second contact, an arc extinguishing bin and the like, the lower part of the molded case is rotatably connected with the rotating shaft, the rotating shaft is connected with the first contact, and the right upper part of the molded case is connected with the arc extinguishing bin. The left lower part of the arc extinguishing chamber is connected with a second contact, and the second contact is contacted with the first contact. According to the utility model, the first contact and the second contact are separated and powered off by rotating the rotating shaft with a hand, or the sliding rod is moved by electrifying the electromagnetic coil, so that the first contact rotates and is powered off, and the electric arc is pushed and guided to flow into the arc extinguishing cover under the action of the magnetic blow-out permanent magnet for arc extinguishing; therefore, arc extinguishing can be carried out in a magnetic blowing and air blowing mode while manual or automatic power off is carried out, arc damage is prevented, the arc extinguishing efficiency is improved, the risk of accidents is reduced, and the arc extinguishing device is safe and convenient to use.

The invention discloses an arc extinguish chamber and a switching device, the arc extinguish chamber comprises a grid plate assembly, the grid plate assembly comprises a first grid plate group and a second grid plate group which are arranged at an interval along a first direction, and the middle part of the first grid plate group is discontinuously arranged and forms an arc channel communicated with the second grid plate group; the second grid plate group comprises an arc striking part arranged opposite to the arc channel in the second direction and arc extinguishing parts arranged on the two sides of the arc striking part, and the arc striking part faces the arc channel and protrudes out of the arc extinguishing parts; and the arc striking assembly extends from the two sides, in the second direction, of the arc channel to the two sides, in the second direction, of the second grid piece set, the arc striking assembly is provided with a transition connecting part which is arranged between the first grid piece set and the second grid piece set and used for isolation, and the transition connecting part, the first grid piece set and the second grid piece set are arranged at intervals in the first direction. The arc extinguishing chamber and the switching device aim at improving the overall arc extinguishing efficiency.

The utility model provides an excitation fuse, a battery pack and electric equipment. Relates to the technical field of circuit protection. The excitation fuse comprises a shell, an excitation cut-off assembly, a conductor and a melt. An accommodating cavity is formed in the shell; the excitation cutting-off assembly is located in the containing cavity and provided with a cutting-off end. Part of the conductor is positioned in the accommodating cavity; the melt is located in the containing cavity and connected with the conductor in parallel. The melt is provided with a melt breaking part, and the melt breaking part is opposite to the cut-off end. The cut-off end is used for sequentially cutting off the conductor and the fuse breaking part. A first arc extinguishing cavity is further formed in the shell, the first arc extinguishing cavity is filled with a first insulating medium, and the fuse breaking part is located in the first arc extinguishing cavity. According to the excitation fuse provided by the embodiment of the invention, the arc extinguishing efficiency is improved, the safety and reliability of the whole excitation fuse are improved, and the safety of a battery pack and electric equipment is improved.

The utility model discloses a contactor and a circuit system, and the contactor comprises a housing which is internally provided with an arc extinguishing cavity. The two static contact pieces are oppositely arranged, each static contact piece comprises a static piece contact part and a connecting part, the static piece contact parts are arranged in the arc extinguishing cavity, and the connecting parts are arranged outside the shell and used for being connected with external equipment; the movable contact piece is arranged in the arc extinguishing cavity, movable piece contact parts are arranged at the two ends of the movable contact piece, and the movable piece contact parts are in separable contact with the static piece contact parts of the two static contact pieces so as to disconnect or connect the two static contact pieces; the arc chute is formed by stacking a plurality of grid pieces, the arc chute surrounds the static piece contact part and the movable contact piece, and the top grid piece of the arc chute is connected with the static piece contact part in an equipotential manner; and the arc striking mechanism is used for generating a guide magnetic field, and the guide magnetic field is used for deflecting an arc generated when the moving part contact part is separated from the static part contact part to the arc chute for extinguishing. According to the utility model, the problem of low arc extinguishing efficiency of the arc extinguishing structure of the contactor in the prior art is solved.

This utility model discloses an integrated arc extinguishing and arc suppression device and a circuit breaker having the same, including an arc extinguishing chamber unit and an arc suppression chamber unit. The arc suppression chamber unit is integrally connected to the arc extinguishing chamber unit through a set of mounting side plates, and an extension baffle is formed by the set of mounting side plates extending towards the circuit breaker wiring port. The mounting side plates and the extension baffles are integrally formed to constitute the side walls of the arc extinguishing chamber unit and the arc suppression chamber unit, respectively. In this integrated structure, the ends of the extension baffles directly cover the inner walls on both sides of the wiring port, forming a continuous arc extinguishing cavity and an arc suppression cavity, completely eliminating the gaps caused by assembly, structurally blocking the path of arc escape, and improving the overall arc extinguishing and arc suppression efficiency. The integrated arc extinguishing chamber and arc suppression chamber structure significantly compresses redundant space, improves the internal layout compactness without increasing the overall volume of the circuit breaker, and significantly improves the cabinet space utilization rate.

The utility model belongs to the technical field of circuit breaker arc extinguishing, and discloses an arc extinguishing device of a circuit breaker, which comprises a shell, a fixed block fixedly arranged in the left side of the shell, an interface end fixedly arranged in the fixed block, a guide pipe fixedly arranged on the right side of the interface end, and an arc extinguishing assembly arranged in the guide pipe. The arc extinguishing assembly comprises a pipe body arranged in the guide pipe in a sliding mode, fixing plates are fixedly arranged on the upper side and the lower side of the right side of the pipe body, sealing blocks are arranged on the outer sides of the fixing plates in a sliding mode, and the sealing blocks and the pipe body are arranged in a sliding mode. And after being separated from the sealing blocks, the sealing blocks at the other end can be directly pushed to be close to each other and closed together through the pushing of the spring on the outer side of the telescopic shaft to form a closed state, so that the electric arc is effectively blocked and sealed, and the size of the circuit breaker can be effectively reduced.

This utility model relates to an air outlet structure for a miniature circuit breaker. By setting a first air outlet and a second air outlet on the housing, a multi-channel arc-extinguishing path is formed. During the operation of the circuit breaker, the electric arc and heat generated inside can be quickly dissipated through these two air outlets, preventing the airflow from interfering with each other within the arc-extinguishing assembly. This effectively reduces the residence time of the electric arc inside the circuit breaker. The first air guide wall between the arc-extinguishing assembly and the first air outlet, and the second air guide wall between the arc-extinguishing assembly and the second air outlet, play a role in precisely guiding the airflow. When an electric arc is generated, the air guide wall can guide the airflow in an orderly and uniform manner to the arc-extinguishing assembly, forming a stable and suitable airflow field around the arc-extinguishing grid. This airflow field helps to quickly remove the heat and plasma generated by the electric arc, accelerate the arc extinguishing process, improve the arc extinguishing efficiency, reduce the erosion of the internal components of the circuit breaker by the electric arc, and enhance the breaking capacity and reliability of the circuit breaker.

A contact arc extinguishing device of a circuit breaker belongs to the technical field of switch electric technology. It comprises a moving contact and a static contact for breaking a circuit, and an arc extinguishing system for extinguishing the arc generated when the moving contact is broken with the static contact. The arc extinguishing system comprises an arc extinguishing grid set, which comprises an arc leading grid and a set of arc extinguishing grids. The set of arc extinguishing grids is arranged from top to bottom and keeps an arc extinguishing grid interval distance between each other. The arc leading grid is arranged above the set of arc extinguishing grids and keeps an arc leading grid interval distance between the arc leading grid and the uppermost arc extinguishing grid in the set of arc extinguishing grids. The feature is that the arc leading grid interval distance is greater than the arc extinguishing grid interval distance. The advantage is that the arc extinguishing efficiency of the arc extinguishing chamber is improved through reasonable arrangement of the arc extinguishing grids, and the safety and reliability of the electrical equipment when breaking the current are ensured.

The invention discloses a contact mechanism and a vacuum circuit breaker, and relates to the technical field of circuit breakers. The contact mechanism comprises a moving contact, a static contact and a transverse magnetic field structure. The moving contact comprises a first contact part, the static contact comprises a second contact part, the arc extinguishing structure is arranged on the first contact part and / or the second contact part, the transverse magnetic field structure is used for generating a transverse magnetic field, so that the moving contact and the static contact form a rotary switching arc during opening and closing, and the arc extinguishing structure is used for extinguishing the switching arc. The contact mechanism provided by the invention can effectively improve the arc voltage of the switching arc, improve the arc extinguishing efficiency, enhance the arc extinguishing effect, improve the safety, meet the direct current breaking requirement and expand the application scene.

This utility model relates to an enhanced active fuse, comprising a housing, within which, from top to bottom, are sequentially arranged an excitation device, a power module, a conductor bar, and at least one cooling chamber. The portion of the conductor bar located within the housing has at least one reinforcing element. A heat-absorbing portion is disposed within the cooling chamber. The housing and the conductor bar are fixed together by a coupling. This utility model significantly improves arc extinguishing efficiency through two different arc extinguishing methods: gas-pressurized arc extinguishing by the reinforcing element and arc extinguishing by melting and absorbing heat by the heat-absorbing portion. Simultaneously, the sealing structure and coupling on the conductor bar enhance airtightness, thereby improving the arc extinguishing effect and reliability of the fuse under complex operating conditions, and extending its service life.

The utility model provides an arc extinguishing device and a low-voltage switch, and relates to the low-voltage electrical field. The utility model provides an arc extinguishing device, which comprises an arc extinguishing grid plate group and at least one pair of permanent magnets, and is characterized in that two opposite ends of the arc extinguishing grid plate group are respectively connected with two insulating parts; the at least one pair of permanent magnets are symmetrically arranged in the two insulating parts respectively, and two opposite magnetic poles are the same in polarity; and the at least one pair of permanent magnets are inclined at a preset angle so that one ends of the at least two permanent magnets are close to each other. According to the arc extinguishing device obtained through the design, the at least one pair of permanent magnets are obliquely arranged at the preset angle, the arc extinguishing efficiency of the arc extinguishing device can be improved, and rapid arc extinguishing is achieved.

The utility model provides a circuit breaker relates to electrical equipment technical field. Circuit breaker includes base, arc extinguishing chamber, dynamic contact subassembly and static contact subassembly, and arc extinguishing chamber is provided with arc extinguishing chamber, dynamic contact subassembly includes first dynamic contact head and second dynamic contact head, and one end of first dynamic contact head is set up in base movably, and other end is provided with first dynamic contact point and is inserted into arc extinguishing chamber, and second dynamic contact head is located outside arc extinguishing chamber, static contact subassembly includes static guide plate and first static contact head and second static contact head all with static guide plate is connected, and first static contact head includes first section and second section of bended structure, and one end of first section is connected with static guide plate, and other end is connected with second section, and second section is provided with first static contact point, and this structure is advantageous to the quick guidance and extinguishing of arc, and has promoted the breaking capacity and operating reliability of circuit breaker.

The utility model discloses a gas insulation spark gap overvoltage suppressor relates to voltage suppressor technical field, including suppressor, the one end of suppressor is fixedly connected with the inner station line, and the other end of suppressor is fixedly connected with the outer station line, and the inner station line and the outer station line are far apart and are connected with the high temperature -resistant non -conducting connecting sleeve through thread connection, and two connecting sleeves are far apart and are connected with the metal end through thread connection, in the utility model, through the cooperation between connecting chamber, arc extinguishing chamber and first arc splitting plate, arc extinguishing block, second arc splitting plate, have played the role of arc splitting, lengthening arc extinguishing to arc, have solved the problem that arc sustained existence of overvoltage generation is easy to break down equipment, have improved arc extinguishing efficiency and equipment's safety protection performance, through the cooperation between connecting sleeve, metal cover, rubber block, conducting block and inner station line, outer station line, metal end, have solved the problem that high temperature leads to the loosening of conducting part and the poor connection contact, have improved the stability of installation and the reliability of conduction.

The invention discloses an arc extinguishing control circuit device, which comprises a first shell, a second shell, a first arc extinguishing mechanism, a second arc extinguishing mechanism, a first binding post and a second binding post, and the multi-stage arc extinguishing mechanism of the device can effectively improve the reliability and efficiency of arc extinguishing. A coil, a spring and an iron block in the first arc extinguishing mechanism form an electromagnetic system, and a magnetic field generated by the coil can quickly act on the iron block, so that a contact plate is driven to act through a connecting rod, the current is quickly cut off, and the arc forming time can be effectively shortened. A first guide piece and a second guide piece in the second arc extinguishing mechanism guide the arc to an arc extinguishing strip, the arc extinguishing strip can segment the arc in a physical mode, arc energy is reduced, and arc extinguishing is further accelerated. The design of the air holes in the side face of the second shell facilitates heat dissipation in the device, equipment damage caused by high temperature is prevented, and the whole device is designed in a modular mode, so that the device is compact in structure and convenient to install and maintain.

The utility model provides a contactor, and relates to the technical field of low-voltage electric appliances. The contactor comprises a shell, a moving contact, a static contact and an arc baffle. The shell is provided with a first wiring port and an accommodating cavity. The moving contact is movably mounted in the accommodating cavity; the static contact is fixedly installed in the accommodating cavity, and one side of the static contact can be in contact with the moving contact. The wiring terminal is installed in the accommodating cavity, the wiring terminal is provided with a second wiring port, the second wiring port is communicated with the first wiring port and the accommodating cavity, and part of the static contact extends into the second wiring port to be electrically connected with the power supply line; the arc baffle is arranged in the shell and can cut off communication between the containing cavity and the first wiring port. According to the contactor provided by the invention, communication between the accommodating cavity and the first wiring port can be cut off through the arc baffle arranged in the accommodating cavity, so that the possibility that an electric arc is discharged out of the shell from the first wiring port is reduced, and the use safety and the use reliability of the contactor are ensured.