13results about How to "Improve arc extinguishing efficiency" patented technology

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 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.

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.

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 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 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.