11results about How to "Strong breaking ability" patented technology

The invention relates to the technical field of low-voltage apparatus switches, and particularly discloses an arc extinguishing structure and a circuit breaker, and the arc extinguishing structure comprises an arc extinguishing grid sheet group and a magnetic arc extinguishing assembly which are matched with a contact assembly. The arc extinguishing grid sheet group and the magnetic arc extinguishing assembly are arranged along a motion path of the moving contact, the magnetic arc extinguishing assembly is used for applying an acting force to an electric arc at the contact assembly, and the direction of the acting force intersects with a motion plane of the moving contact in the contact assembly. According to the invention, the arc extinguishing capability of the contact assembly can be enhanced without increasing the volume of the arc extinguishing chamber, so that the breaking capability of the direct current switch to direct current high voltage is effectively improved.

The utility model relates to an energy storage type disconnecting switch, which comprises a shell, a contact system and an energy storage operating mechanism, the energy storage operating mechanism comprises a mechanism frame, a rotating shaft rotationally arranged on the mechanism frame, an operating shaft for driving the rotating shaft to execute opening and closing actions, two energy storage torsion springs arranged between the operating shaft and the shell, a driving piece arranged on the rotating shaft in a linkage manner, and two energy storage spring groups arranged between the driving piece and the mechanism frame; the driving disc is in linkage fit with the driving piece, the driving plate assembly is in linkage fit with the driving disc and used for driving the contact system to execute opening and closing actions, the driving piece is provided with two poking rods used for poking the driving disc to rotate, and the driving disc is provided with two poking holes matched with the two poking rods. And one ends of the two driving levers are respectively inserted into the two driving holes, so that the driving disc is in linkage fit with the two driving levers. The utility model has the advantages of stable and reliable performance, fast opening and closing speed, modularization and high breaking capacity.

The invention relates to antimony-doped cesium tungsten bronze nano-powder and a preparation method thereof, and belongs to the technical field of cesium tungsten bronze materials. Firstly, a tungsten source, a cesium source and an antimony source are fully ground and uniformly mixed to obtain a precursor; then putting the precursor into a tubular furnace, and sintering into a phase in a mixed atmosphere of H2 and N2 to obtain a sintered product; then, under the protective gas atmosphere, the sintering product is subjected to annealing treatment, and a powder product is obtained; and carrying out ball milling and vacuum drying on the powder product to obtain the antimony-doped cesium tungsten bronze powder. By doping a proper amount of antimony into cesium tungsten bronze, on one hand, the visible light transmittance and the infrared shielding rate of the nano material are improved, and the nano material has great application potential in the field of window transparent heat insulation films; on the other hand, due to introduction of antimony, the breaking capacity of the cesium-tungsten bronze nano-powder is improved, large-scale preparation of the cesium-tungsten bronze nano-powder with the uniform and fine size through a simple solid-phase sintering method is facilitated, and the cesium-tungsten bronze nano-powder is used for industrial large-scale production.

The utility model relates to the technical field of intelligent electrical equipment, in particular to an intelligent circuit breaker, which comprises a plurality of shells with the same structure, each shell is internally provided with a wire outlet terminal, a current transformer, a zero sequence transformer, an opening and closing conducting rod, an opening and closing wrench, a magnetic attraction structure, a wire inlet terminal and an arc extinguishing cover, the wire outlet terminal penetrates through the current transformer through a wire to be connected with the opening and closing conducting rod, the middle of the opening and closing conducting rod is clamped in the switch wrench, and the bottom of the opening and closing conducting rod is movably connected with the wire inlet terminal. According to the intelligent circuit breaker, manual control and automatic control are integrated, and opening and closing of the circuit breaker are achieved by pushing the switching wrench manually; the magnetic latching structure is automatically utilized to be linked with the switch wrench, so that the switch wrench realizes the opening and closing operation of the switch wrench according to different magnetic fields generated by the magnetic latching structure.

The utility model relates to the field of circuit protection, in particular to a melt, a fuse and application, a plurality of rows of narrow necks are evenly distributed in the length direction of the melt at intervals, the narrow neck located in the middle of the length direction of the melt is a long narrow neck, the narrow necks on the two sides of the long narrow neck are short narrow necks, and the length of the long narrow neck in the length direction of the melt is larger than that of the short narrow necks; the two sides of each narrow neck in the length direction of the melt are respectively provided with a flame-retardant belt, and the flame-retardant belts penetrate through the width of the melt. According to the fuse using the fuse body, a flame-retardant liner is arranged between an inner cap and an outer cap. The fuse body and the fuse can tolerate higher surge current, can tolerate larger voltage, can tolerate larger current, are higher in breaking capacity, can be applied to the rear end of a surge protector, and can meet the requirement that leakage current is broken for backup protection when the surge protector fails.

The utility model discloses a fuse melt and a fuse, the fuse melt comprises a conductive substrate, and the central area of the conductive substrate is provided with a plurality of columns of first-class through holes; the conductive substrate is also provided with two columns of second-type through holes, and the two columns of second-type through holes are respectively arranged at two sides of the central area; and the length of the second type of through holes is greater than that of the first type of through holes. According to the utility model, the first type of through holes are arranged at the two sides of the second type of through holes, and the length of the first type of through holes is greater than that of the second type of through holes, so that under the condition that the length of the melt is not changed, stronger breaking capacity under a large-current breaking condition is obtained.

The invention relates to an environment-friendly load switch, which comprises a mechanism frame, a main shaft, three insulators, three isolation knives, three groups of crank arm assemblies, a grounding contact assembly and three groups of static contact assemblies, the static contact assembly comprises a conductive busbar, a static contact, a vacuum arc-extinguishing chamber, a support frame arranged on the fixed beam, a conductive member which is rotatably arranged on the support frame and is electrically connected with the vacuum arc-extinguishing chamber, and a torsion spring arranged between the conductive member and the support frame. And the opening piece is rotatably arranged on the support frame and is used for driving a pull rod of the vacuum arc-extinguishing chamber to execute an opening action, when the isolation knife executes the opening action, the conductive piece acts along with the isolation knife and drives the opening piece to act, and the opening piece drives the pull rod of the vacuum arc-extinguishing chamber to execute the opening action. The high-voltage switch cabinet has the advantages of being simple in structure, stable and reliable in performance, high in breaking capacity, small in size, good in insulation performance, high in safety and modularized.

The application relates to a bidirectional direct-current circuit breaker, a rated breaking method and a short-circuit breaking method, and belongs to the technical field of fault protection of a direct-current medium-high voltage power system. The bidirectional direct-current circuit breaker comprises a parallel main switch branch, a voltage-limiting energy-dissipating branch and a coupling commutation shutdown branch. The bidirectional direct-current circuit breaker provided by the application can realize breaking of different currents of the system under different operating conditions, such as a rated condition or a short-circuit condition, by controlling conduction of thyristors in the coupling commutation shutdown branch, only one set of pulse discharge circuit is used, current transfer and reliable shutdown of a large-capacity direct-current system under a high-current change rate short-circuit condition can be realized at the same time, and the bidirectional direct-current circuit breaker has the advantages of small size, strong breaking capacity, convenient control and reclosing function under a short-circuit fault condition.

The invention discloses a high-activity nanocellulose water clarifier and a preparation method thereof. The preparation method comprises the following steps: firstly, screening out nano-cellulose which is easy to disperse in an oil-water interface, carrying out etherification modification on the nano-cellulose through an alkyl methyl ester etherifying agent, and researching etherification modification conditions of the alkyl methyl ester etherifying agent, so that the prepared modified nano-cellulose has a relatively strong breaking effect on oil-in-water emulsion; meanwhile, cationic quaternary ammonium salt type side groups are introduced through etherification reaction, so that the modified nanocellulose further obtains strong charge adsorption effect on oil-containing colloid in water, and fine floc is formed to float. The nano cellulose is modified by alkyl methyl ester and quaternization, so that a high-activity nano cellulose water clarifier product can be prepared, and the nano cellulose water clarifier has a wide application prospect in the field of oil-water separation of offshore oilfields.

The utility model provides a material scattering mechanism of a mica roasting kiln, and belongs to the technical field of mica processing and production. The technical problems of material blockage or insufficient scattering and the like in the prior art are solved. The material scattering mechanism of the mica roasting kiln comprises a scattering roller which is arranged above a metal conveying belt and located between a pre-drying area and a roasting area, the scattering roller is provided with a scattering structure distributed in the length direction of the scattering roller, and the two ends of the scattering roller are located on the two sides of the metal conveying belt respectively. A height adjusting mechanism capable of adjusting the height of a mica passing gap between the scattering roller and the metal conveying belt is arranged at the end part of each scattering roller, and one end of each scattering roller is connected with a rotary driver. The device has the advantages of good scattering effect, high applicability, good stability and the like.

The embodiment of the invention provides a miniature circuit breaker, and the circuit breaker comprises a tripping mechanism which comprises a moving contact support, moving contacts, a first actuating input part and a second actuating input part, and the first actuating input part and the second actuating input part are used for driving the moving contact support to move, so as to enable at least one moving contact to be separated from a corresponding fixed contact; the magnetic tripping assembly comprises a coil and an actuating part, and when the main loop current passing through the miniature circuit breaker is larger than a first preset short-circuit current threshold value, the actuating part acts under the action of an electromagnetic field generated by the coil so as to apply external force to the first actuating input part; the electronic release comprises a current sensor, a controller and an action actuator, the controller is configured to respond to the situation that the main loop current measured by the current sensor is larger than a preset overload current threshold value and smaller than a second preset short-circuit current threshold value, and the action actuator is controlled to apply external force to the second actuating input part; wherein the first preset short-circuit current threshold value is greater than the second preset short-circuit current threshold value.