22results about How to "Improve arc extinguishing effect" patented technology

The utility model relates to a small-sized heavy-current magnetic latching relay, which at least comprises a base and a shell arranged outside the base, a magnetic steel assembly, a main contact assembly, an auxiliary contact assembly and a linkage assembly are at least arranged in the base, and the magnetic steel assembly comprises a magnetic steel main body rotatably and movably connected to the base. The end part of the magnetic steel main body extends to form a cantilever, the main contact assembly comprises a driving spring seat and a main static spring seat, the driving spring seat is fixedly connected with a driving reed assembly formed by overlapping and combining a plurality of driving reeds, the auxiliary contact assembly comprises an auxiliary movable spring seat and an auxiliary static spring seat, and the auxiliary static spring seat is fixedly connected with a driving reed assembly formed by overlapping and combining a plurality of driving reeds. The auxiliary movable spring seat is fixedly connected with an auxiliary movable spring piece, the linkage assembly comprises a pushing piece, and the pushing piece comprises a first end portion connected with the cantilever, a second end portion connected with the driving spring piece assembly and a third end portion connected with the auxiliary movable spring piece. The relay can improve the production efficiency and the performance of the auxiliary contact assembly.

The invention discloses an integrated arc extinguishing system structure, and relates to the technical field of direct current contactors, the integrated arc extinguishing system structure is composed of arc extinguishing chambers, a moving contact assembly and static contact assemblies, the two sides of the moving contact assembly are symmetrically connected with independent arc extinguishing chambers respectively, and the upper sides of the arc extinguishing chambers located on the two sides are correspondingly provided with the static contact assemblies respectively. Two sides of the movable contact assembly are provided with movable arc striking sheets, the static contact assembly is provided with static arc striking sheets, each independent arc extinguishing chamber is correspondingly provided with a movable arc striking sheet and a static arc striking sheet, and one side, close to the movable contact assembly, of each movable arc striking sheet and one side, close to the movable contact assembly, of each static arc striking sheet are correspondingly arranged. The arc extinguish chambers symmetrically arranged on the two sides of the moving contact assembly are the same in structure and have a good arc extinguish effect, and the contactor is small in size, high in operation load, relatively simple in arc extinguish structure and process manufacturing and low in cost.

According to the environment-friendly gas insulation primary and secondary fusion complete ring main unit based on the magnetic control technology, a first gas box is divided into a primary loop cavity and a secondary loop cavity through a box body piston, and the primary loop cavity and the secondary loop cavity are filled with different insulation gases respectively. The primary loop cavity is filled with first insulating gas, and the gas pressure is dynamically adjusted through the magnetic control technology to enhance the arc extinguishing performance. The secondary circuit cavity can be filled with second insulating gas to provide a stable environment for the secondary circuit, and the secondary circuit cavity can be communicated with the primary circuit cavity through the ventilation system to mix the gas so as to improve the arc extinguishing performance. In addition, the ring main unit is additionally provided with a second gas tank which is filled with third insulating gas with different characteristics from the first insulating gas. And a second gas flow port controlled by the controller is arranged between the second gas tank and the first gas tank, and when necessary, the controller can open the valve to enable the third insulating gas to flow into the primary loop cavity, so that the gas composition is flexibly adjusted, and the arc extinguishing effect is optimized.

The utility model relates to the field of switching devices, in particular to a switching unit of a switching device and the switching device, the switching unit comprises a movable contact part, a static contact part and an arc extinguishing assembly, the movable contact part is arranged on an action execution assembly, the arc extinguishing assembly is linked with the action execution assembly, and the arc extinguishing assembly is linked with the action execution assembly along with closing or breaking of the movable contact part and the static contact part. The arc isolating part of the arc extinguishing assembly is selectively positioned at the avoiding position or the arc extinguishing position, so that the arc isolating part forms physical isolation of the movable contact part and the static contact part at the arc extinguishing position to extinguish the arc; the arc extinguishing assembly and the action execution assembly form linkage through a tooth-shaped transmission mechanism. The switching device is provided with the switching unit. The arc extinguishing assembly and the action execution assembly are linked to enable the arc isolating part to move along with the movement of the action execution assembly, effective arc extinguishing can be realized, timely abdication can be realized to facilitate reliable closing of the movable contact part and the static contact part, the tooth-shaped transmission mechanism works reliably, the working reliability of the arc extinguishing assembly is improved, and the service life of the arc extinguishing assembly is prolonged. And the switch unit is ensured to have a good arc extinguishing effect.

The present invention relates to the field of protection switches, and in particular to an intelligent emergency protection device for a power distribution cabinet, comprising a switch box, wherein an arc extinguishing chamber is separated by a partition in the switch box, an insulating box is arranged in the arc extinguishing chamber, a grid structure is arranged in the insulating box, the grid structure is composed of a fixed lower grid and a movable upper grid, the upper grid is mounted on a movable mounting plate, the movable mounting plate is restricted by a guide groove with an inclined groove, a movable elastic reset structure is arranged on the movable mounting plate, a movable bracket is installed on the partition for lifting and lowering, the movable bracket is located below an iron pressure piece in the switch box, a voltage-breaking piece is arranged on the movable bracket, a heat absorbing box is arranged on the insulating box, heat absorbing liquid is arranged in the heat absorbing box, a movable bottom support with a piston is arranged at the bottom of the heat absorbing box, and a shunt pipe is arranged at the top of the heat absorbing box; the emergency protection device of the present invention is provided with an intelligent arc extinguishing chamber structure, which can temporarily improve the arc extinguishing efficiency when a short circuit occurs and a power failure occurs.

The utility model discloses a contactor, which comprises a base, a plurality of loops are arranged on the base, each loop is provided with an accommodating cavity, an arc extinguish chamber is respectively introduced into a wire inlet end and a wire outlet end of each loop, the arc extinguish chambers are vertically arranged in the accommodating cavities, and the contactor also comprises a rear wall, the rear wall is located between the first side wall and the second side wall, so that the first side wall, the red steel paper sheet and the second side wall form a groove body, the plurality of first arc extinguishing grid sheets are located in the groove body, the first arc extinguishing grid sheets are close to the rear wall and embedded in the rear wall, and the second arc extinguishing grid sheets are close to the rear wall and embedded in the rear wall. And one end, far away from the rear wall, of the first arc extinguishing grid sheet is of a sawtooth structure. Compared with the prior art, due to the fact that the rear walls are arranged at the rear ends of the first side wall and the second side wall of the contactor, the arc extinguishing effect when the contactor is disconnected is improved, the electric service life of a product is prolonged, in addition, the exhaust groove is formed in the rear wall of the arc extinguishing chamber, arc cooling can be accelerated, and the arc extinguishing effect is improved.

The utility model discloses a direct current relay, comprising a contact system which comprises a movable contact piece and a static contact piece which are matched with each other, and the movable contact piece is contacted with or disconnected from the static contact piece under the driving of a magnetic circuit system of the direct current relay; the arc extinguishing magnetic assembly comprises a special-shaped permanent magnet, and at least one end of the special-shaped permanent magnet is bent towards one side, so that a magnetic field on the bent side forms a magnetic line gathering area; the contact system is configured to be located on the bent side of the special-shaped permanent magnet and arranged corresponding to the magnetic line gathering area of the special-shaped permanent magnet. When the special-shaped permanent magnet is used as a carrier of an arc extinguishing magnetic field, most of the magnetic field generated by the special-shaped permanent magnet is concentrated towards the middle, that is, magnetic lines of force on the arc-shaped inner surface of the special-shaped permanent magnet are high in concentration degree at the central position of a contact and can better correspond to the contact part, so that a good arc extinguishing effect is achieved; in other words, compared with a square permanent magnet, the arc-shaped block-shaped permanent magnet is more beneficial to achieving utilization maximization of an arc extinguishing magnetic field, the initial moving speed of the arc is increased, and the arcing time is shortened.

The utility model relates to a terminal cover of a circuit breaker, which comprises a cover body and a plurality of arc extinguishing sheet groups, a plurality of arc extinguishing cavities are respectively arranged in the cover body, the plurality of arc extinguishing sheet groups are respectively arranged in the plurality of arc extinguishing cavities, one end of the cover body is respectively provided with a plurality of exhaust holes communicated with the plurality of arc extinguishing cavities, and the other end of the cover body is provided with a plurality of air outlets communicated with the plurality of arc extinguishing cavities. The arc extinguishing sheet group comprises an arc extinguishing inner cover arranged in the arc extinguishing cavity and a plurality of arc extinguishing sheets respectively arranged in the arc extinguishing inner cover, two sides of the arc extinguishing inner cover are respectively provided with a plurality of clamping grooves, the arc extinguishing cavity is internally provided with a plurality of clamping convex strips matched with the clamping grooves, the clamping convex strips are clamped in the clamping grooves, and the clamping convex strips are clamped in the clamping grooves. And the arc extinguishing inner cover is clamped and matched with the clamping convex strip. The device has the advantages of simple structure, stable and reliable performance, good arc extinguishing effect, zero flashover and modularization.

The present invention relates to an insulating gas for electrical insulation or arc extinguishing of an electrical device and an electrical device for electrical insulation using the insulating gas. The insulating gas capable of replacing the SF6 gas in the invention is a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas according to the present invention has the characteristics of low boiling point, high insulating strength, low toxicity, and low global warming index (GWP1 or less), thereby being able to replace SF6, and reducing the global warming index while maintaining high insulating ability and arc extinguishing ability, thereby reducing greenhouse gases.

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.

This disclosure relates to DC protectors and electric vehicles. The DC protector includes a housing, a moving contact, a stationary contact, and a magnet. The moving contact, stationary contact, and magnet are disposed within the housing. The magnet is arranged such that the magnetic field lines generated by the magnet between the moving and stationary contacts have a direction different from the direction of movement of the moving contact. The magnet, moving contact, and stationary contact are positioned in the same chamber, and the magnet directly faces the moving and stationary contacts. Electric vehicles include the aforementioned DC protector. The DC protector has a simple structure, low cost, high reliability, and long service life.

The invention belongs to the field of circuit breakers, and discloses an arc extinguishing device and a circuit breaker, the arc extinguishing device comprises two air compression chambers which are connected in parallel, the two air compression chambers share the same piston rod, the two air compression chambers are both communicated with a fracture, the piston rod can synchronously compress the two air compression chambers to form required pressure difference or outlet flow velocity difference, and then eddy current is formed. According to the utility model, hot air entering the expansion chamber is cooled, and then high-pressure cold-state insulating gas is blown to the fracture, or the high-pressure cold-state insulating gas forming eddy current is directly blown to the fracture, so that the breaking capacity is improved; by adopting the device, the on-off performance of the arc extinguish chamber is improved, and compared with a traditional method, the on-off performance can be improved without adopting a mode of increasing operation work, and the operation reliability and efficiency of the circuit breaker are improved; the arc extinguishing device is simple in structure and principle, convenient to implement, operate and maintain, good in breaking performance and good in popularization and application value.

The invention belongs to the field of electric power, and particularly relates to a high-voltage circuit breaker device for an intelligent power grid, which comprises a circuit breaker body, an arc extinguish chamber is arranged in the circuit breaker body, an arc extinguish grid assembly is arranged in the arc extinguish chamber, and the arc extinguish grid assembly comprises a shell and a plurality of arc extinguish grid sheets mounted in the shell. The arc extinguishing grid assembly further comprises a first piezoelectric ceramic piece and a second piezoelectric ceramic piece, the first piezoelectric ceramic piece and the second piezoelectric ceramic piece are installed on the two sides of the shell respectively, the first piezoelectric ceramic piece and the second piezoelectric ceramic piece are both fixedly connected with the outer side wall of the shell, and the first piezoelectric ceramic piece and the second piezoelectric ceramic piece are both parallel to the arc extinguishing grid piece. According to the low-voltage circuit breaker, the arc extinguish chamber in an existing low-voltage circuit breaker is optimally designed, the arc extinguish grid pieces are improved, and the first piezoelectric ceramic piece and the second piezoelectric ceramic piece are additionally arranged, so that the arc extinguish effect can be remarkably improved, zero flashover can be achieved, the arc extinguish effect of the arc extinguish chamber is good, the size of the arc extinguish chamber does not need to be multiplied, and practicability is high.

The application discloses a kind of intelligent magnetic control low-voltage switch device, including magnetic control primary module and blade type secondary module;The magnetic control primary module includes first bottom shell, first top shell, plastic shell baffle, bottom plate, the first bottom shell, first top shell, plastic shell baffle, bottom plate form entire shell frame;The application can realize automatic opening and closing under the size requirement of original manual plastic shell circuit breaker, directly replace the existing old switch of station area, the opening and closing speed is greatly changed fast, improve mechanical performance, effectively increase the space capacity of secondary control module, realize high intelligence, one, secondary integral modular design, secondary module heat insulation design, secondary control module can be plugged, can realize not power replacement secondary module, improve the operation and maintenance ability of product, the service life of primary and secondary module is same period, greatly improve the service life of device, secondary vulnerable components can be plugged alone, improve the flexibility of device, with higher scientificity, logic.

The invention relates to the technical field of power equipment protection, in particular to a transformer lightning protection system and a transformer, a lightning arrester is arranged at an outlet sleeve of the transformer or an electric reactor, and when lightning attack exists and lightning shock waves transmitted along a line exceed the protection level of the lightning arrester, the lightning arrester is arranged at the outlet sleeve of the transformer or the electric reactor. The lightning arrester arranged at the position of the outlet sleeve of the transformer or the electric reactor discharges firstly, lightning current is safely led into the ground, the amplitude of lightning voltage is limited below the lightning impulse level of protected equipment, and therefore the transformer or the electric reactor is effectively protected against lightning damage. As the lightning arrester is arranged at the outlet sleeve of the transformer or the electric reactor, the transformer can be protected to the maximum extent, lightning impacts are prevented from entering the transformer or the electric reactor, the propagation distance of lightning waves in a system can be shortened, attenuation and deformation of the lightning waves in the propagation process are reduced, and the protection effect of the lightning arrester is improved. The problem that an existing transformer lightning arrester cannot comprehensively protect a transformer is solved.

The invention relates to the technical field of electric contact preparation surface modification, in particular to a method for modifying the surface of an electric contact based on a PII-IBED technology. According to the method, the PIII-IBED technology is innovatively used for surface modification of the electric contact piece, low-energy metal ions generated by the ion beam enhanced deposition technology are gently deposited on the surface of a material to form a preliminarily modified deposition film, microscopic surface defects and uneven positions are filled, the actual contact area is increased when the electric contact piece forms electric contact, and the contact quality of the electric contact piece is improved. The method comprises the following steps of: firstly, carrying out primary modification on a deposited film, ensuring more excellent arc extinguishing performance and electric contact life in subsequent application, and then bombarding the primarily modified deposited film by utilizing high-energy inert gas plasma generated by a plasma immersion technology, so that injected ions collide with deposited atoms, have certain energy and are uniformly deposited on the surface of a substrate, and thus the surface of the substrate is protected. And the deposition layer is uniform and compact, has no pinholes, and is firmly combined with the substrate.

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an arc extinguishing structure and a circuit breaker. The arc extinguishing structure comprises a base and an arc striking piece; wherein an arc extinguish chamber is arranged in the base; the arc striking piece is of an integrally-formed structure and is arranged in the base, the arc striking piece comprises an arc striking plate and a magnetism increasing plate, the arc striking plate is arranged in the arc extinguish chamber and is used for introducing an electric arc into the arc extinguish chamber, and the magnetism increasing plate is used for being connected with the static contact and can form a closed-loop magnetic conduction loop so as to guide the electric arc into the arc extinguish chamber. According to the arc extinguishing structure, the arc striking piece is arranged to be of the integrally-formed structure, the magnetism increasing plate in the arc striking piece replaces a magnetism increasing block in the prior art, the magnetism increasing block does not need to be independently arranged in the base, the number of parts is small, assembling is easy and convenient, and the cost of the arc extinguishing structure and the cost of the circuit breaker are reduced.

The present invention provides an electrical component, comprising a shell, a contact component arranged in the shell, and a limiting structure fixed relatively to the shell, wherein the contact component comprises: a static contact, a moving contact, and a contact support portion providing support for the moving contact, the limiting structure can contact or separate from the moving contact, after the moving contact and the static contact are disconnected, the moving contact moves linearly for a distance driven by the contact support portion and then contacts the limiting structure, and rotates under the joint action of the limiting structure and the contact support, the present invention can increase the contact opening distance of the electrical component with a single breakpoint structure, and enhance the arc extinguishing capability of the electrical component.

The utility model relates to the technical field of low-voltage electric appliances, and discloses an arc extinguishing system and direct current equipment, and the arc extinguishing system comprises an insulating shell and a plurality of arc extinguishing grid sheets which are installed on the insulating shell. An arc extinguishing channel for allowing generation and movement of an electric arc is formed in the insulating shell; the plurality of arc-extinguishing grid plates are located at the outlet of the arc-extinguishing channel and are stacked from the top to the bottom of the insulating shell, a gap is formed between every two adjacent arc-extinguishing grid plates, and the plurality of arc-extinguishing grid plates, close to the bottom of the insulating shell, in the plurality of arc-extinguishing grid plates are arranged in parallel; a plurality of arc-extinguishing grid sheets, close to the top of the insulating shell, in the plurality of arc-extinguishing grid sheets are distributed in a fan shape, and an included angle between extension directions of two arc-extinguishing grid sheets which are farthest from each other in the plurality of arc-extinguishing grid sheets is an acute angle. According to the arc extinguishing system and the direct current equipment, the arc extinguishing effect can be improved, and the arc extinguishing efficiency is improved.

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 invention discloses a high-voltage disconnecting link with an arc extinguishing function and an operation method thereof. The high-voltage disconnecting link comprises a mounting seat, and two supporting insulators are arranged on the mounting seat at intervals; the isolation switch comprises a blade, a first static contact and a second static contact, the first static contact and the second static contact are arranged on the two supporting insulators respectively, the blade is rotationally connected with the first static contact, and the blade can abut against or be spaced from the second static contact; the arc extinguishing device comprises a gas storage tank, a connecting pipe and nozzles, sulfur hexafluoride gas is stored in the gas storage tank, and the nozzles are arranged on one side of the isolation switch at intervals through the connecting pipe. According to the high-voltage disconnecting link with the arc extinguishing function, through the arrangement of the arc extinguishing device, when the blade and the second static contact are disconnected at an interval, sulfur hexafluoride gas in the gas storage tank can be sprayed out of the spray head through the connecting pipe so as to perform arc extinguishing treatment on an electric arc between the blade and the second static contact, the sulfur hexafluoride gas is good in insulativity and arc extinguishing effect, and the high-voltage disconnecting link with the arc extinguishing function is high in practicability. And the use safety and reliability of the isolation switch and the circuit are improved.

The embodiment of the utility model discloses a timer and clothes processing equipment. The timer comprises a shell, an arc extinguishing loop and a plurality of control loops. The shell has an accommodating cavity; the control loops correspond to different control signals, and one of the control loops is selected to be communicated with a power supply so as to output the control signal corresponding to the control loop; the arc extinguishing loop is electrically connected with each control loop and is used for performing arc extinguishing in the switching process of each control loop between connection and disconnection; and each control loop and each arc extinguishing loop are arranged in the accommodating cavity. When the plurality of control loops are switched between the on state and the off state, arc extinguishing can be performed through the arc extinguishing loop, and the arc extinguishing loop is located in the accommodating cavity, so that the distance between the arc extinguishing loop and each control loop is shortened, the response of the arc extinguishing loop is more sensitive, the arc extinguishing effect is better, the electromagnetic compatibility of the timer is improved, the service life of the timer is prolonged, and the service life of the timer is prolonged. In addition, the arc extinguishing loop is integrally designed in the accommodating cavity of the timer, so that the integration level of the timer can be improved.