6730results about "Electric switches" patented technology

The invention discloses a high-voltage circuit breaker arcing monitoring system and method, and relates to the technical field of power equipment operation state detection, and the method comprises the following steps: S1, synchronously collecting arcing spectral signals and electromagnetic interference vector data under a unified time reference, and carrying out primary differential processing to generate stable base plane signals; s2, inputting the stable base plane signal into the interference identification model, generating a multi-dimensional spectrogram through time-frequency mapping, extracting an interference time sequence boundary, and outputting an interference weight matrix; the arcing monitoring method based on spectrum and electromagnetic signal synchronous acquisition is constructed, interference identification, signal purification, energy analysis and control instruction generation are fused, parameter self-optimization is realized through closed-loop feedback, the arcing identification accuracy and the arc quenching response efficiency are effectively improved, and the arcing monitoring method is suitable for large-scale popularization and application. And the operation safety and the intelligent level of the circuit breaker in a strong interference environment are enhanced.

The invention discloses a 10KV station electric control system of a convertor station adopting selecting 2 from 3 logic. Two PS830 boards are added, three PS830 boards are utilized to concurrently process and jointly realize a spare power automatic switching function and an operation interlocking logic function; the selecting 2 from 3 logic is added in PS853 programs of an ASI host machine and a switching value output board, i.e. the electric control system can be exported when at least two of three integrated circuit boards sends out same instructions. The damage of any one of the three PS830 boards can not lead to switch fault trip or refusing trip, the 10KV control system can be ensured to run safely and stably without being influenced by the faults of single element. The electric control system has the advantages of convenient use, safety and the like.

The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with a reclosing mechanism, which comprises a shell, a circuit breaker handle is rotationally arranged in the shell, an operating rod and at least three gears meshed in sequence are further rotationally arranged in the shell, and the tooth number of each gear is gradually increased in sequence. The two gears located on the two sides are a small gear and a large gear respectively, the number of teeth of the small gear is smaller than the number of teeth of the large gear, the operating rod is fixedly connected with the small gear, and the large gear is in transmission connection with a circuit breaker handle. Speed reduction and torque increase are realized through the gear train, so that the force required to be applied when a user manually operates the handle of the circuit breaker is remarkably reduced, the operation intensity is reduced, the convenience of manual reclosing is improved, and the manual reclosing device is particularly suitable for a large-current circuit breaker or an occasion requiring a relatively large operation torque.

The invention discloses a molded case circuit breaker, which comprises a shell, and an electric operating mechanism is arranged in the shell. The electric operating mechanism comprises a moving contact action assembly with a rotating block and a shifting rod, a sliding block which is arranged on the shell in a sliding manner and can drive the shifting rod to shift, an operating shaft which can drive the sliding block to slide and is provided with an operating hole site, and a motor speed reduction assembly which can drive the operating shaft to rotate, and the operating shaft is in linkage connection with a shifting shaft block; the sliding block is provided with a matching groove corresponding to the shifting shaft block, the operation shaft rotates to drive the shifting shaft block to shift in the matching groove so as to drive the sliding block to slide, the shell is provided with a cover plate capable of shielding the operation hole position in a sliding mode, and the shell is further provided with a rotating lock and a tripping button located on one side of the rotating lock. By arranging the locking microswitch, the manual microswitch, the first microswitch and the second microswitch, signal feedback of a manual operation state, a rotating lock locking state and a current circuit breaker state can be realized.

The utility model discloses an operation locking mechanism of a molded case circuit breaker, which comprises a shell and an electric operation mechanism arranged in the shell. The electric operating mechanism comprises a moving contact action assembly with a driving lever, a sliding block which is arranged on the shell in a sliding manner and can drive the driving lever to shift, an operating shaft which can drive the sliding block to slide and is provided with an operating hole site, and a motor speed reducing assembly which can drive the operating shaft to rotate, and a cover plate which can shield the operating hole site is arranged on the shell in a sliding manner; the shell is also provided with a rotating lock and a tripping button positioned on one side of the rotating lock, and is characterized in that the shell is provided with a manual microswitch positioned on one side of the cover plate, and the shell is provided with a locking microswitch positioned on one side of the rotating lock. By arranging the locking microswitch and the manual microswitch, signal transmission of a manual operation state and a rotating lock locking state can be achieved, limiting of other components can be achieved through rotating locking of the rotating lock, misoperation is prevented, and operation safety is improved.

The invention provides a compact intelligent switch cabinet, which belongs to the technical field of intelligent switch cabinets and comprises an intelligent switch cabinet body, a switch cabinet back plate is arranged on the outer wall of one side of the intelligent switch cabinet body, and a switch cabinet door is hinged to the outer wall of the other side of the intelligent switch cabinet body. A transverse partition plate is arranged in the middle of the inner side wall of the intelligent switch cabinet body, a concave hole is formed in the outer wall of one side of the transverse partition plate, and an electrical equipment compact installation assembly and a locking linkage assembly are arranged on the inner side of the intelligent switch cabinet body. According to the electrical equipment compact installation assembly, electrical equipment can be adaptively and horizontally arranged and installed in the intelligent switch cabinet according to the thickness of the electrical equipment, so that the space occupied by tiled installation of the electrical equipment is reduced, and the electrical equipment installed in the intelligent switch cabinet can be conveniently overhauled, replaced and installed; and the intelligent switch cabinet can be manufactured to be more compact and can be flexibly expanded so as to adapt to frequently-changed power utilization requirements.

The invention provides an electrical button, which has a accommodating groove with a accommodating cavity, an elastic fixing member and a rigid pressing member are arranged on the accommodating groove; the elastic fixing member has an upper ring cover and a lower ring cover, forming a first clamping groove; the upper ring cover and the lower ring cover The outer periphery of the ring cover is connected by the cap wall, and the lower end of the cap wall is clamped in the connecting groove of the side wall of the receiving groove; the outer periphery of the lower end of the cap wall is provided with an upper fixing edge and a lower fixing edge to form a second clamping groove; The first clamping plate in the first clamping groove, the first clamping plate is provided with a pressing plate; the first clamping plate is provided with a guide post, and the lower end of the guide post is provided with a moving contact; the bottom surface of the receiving cavity is provided with a first static contact and the second static contact; the outer guide post is provided with an elastic piece, the upper end of the elastic piece is provided with an upper fixed end, and the lower end is set with a lower fixed end; the upper fixed end is clamped in the upper fixing groove of the first clamping plate, and the lower fixed end is clamped Connected to the lower fixing groove in the receiving cavity. The invention realizes double reset through the cap wall and the elastic member, so as to avoid the push button from being dead; the sealing performance is good, and dust and water are prevented from entering.

The invention provides a touch feedback control method and device for a rotary knob, electronic equipment and a medium, and belongs to the technical field of switch control. The method comprises the following steps: converting a current Ia, a current Ib and a current Ic in a three-phase static coordinate system into a current Ialpha and a current Ibeta of a two-phase static coordinate system; the current I alpha and the current I beta of the two-phase static coordinate system are converted into current Id and current Iq under a two-phase rotating coordinate system with rotor flux linkage as orientation; the convergence speed of the driving motor in the dynamic response process is controlled and optimized by adopting a sliding mode variable structure; performing real-time setting through a zebra optimization algorithm to minimize overshoot and optimize convergence time; and the magnitude of the rotation feedback damping force is controlled by adjusting the current Iq. In this way, active rotating tactile feedback and pressing tactile feedback can be provided, and the intelligent interaction degree is improved.

A keyboard may include a top case and a bottom case coupled with each other to define an internal compartment. Multiple internal layers are contained within the internal compartment. The multiple internal layers may include a plurality of keys mounted on a switch plate, wherein a portion of each of the plurality of keys protrudes over the top case; a printed circuit board (PCB) layer disposed under the switch plate; a gasket layer disposed under the PCB layer. The gasket layer comprises a peripheral wall and a bottom floor integrally formed with the peripheral wall. The switch plate is coupled with the peripheral wall of the gasket layer.

The present disclosure teaches a keycap with an interchangeable keycap top. The keycap comprises a keycap base and a keycap top. Wherein, a first magnetic piece connects to the keycap base, and a second magnetic piece connects to the keycap top. Both magnetic pieces can be a magnet or of a magnetic material, and at least one of the magnetic pieces is a magnet. The keycap top can thus be secured onto the keycap base by attaching the first magnetic piece to the second magnetic piece. The keycap top may be textured, have a distinctive shape, or have a distinctive coloring, or have other features, to provide physical and visual cues for a user. The present disclosure also teaches a customizable keyboard and a method of customizing such keyboard using said interchangeable keycap tops.

A series-type hybrid circuit breaker to provide protection against short circuit faults in DC or AC power circuits. A series-type hybrid circuit breaker (SHCB) forces a fault current into a high-frequency AC current with zero crossings and allows a mechanical circuit breaker to disconnect the faulty branch. The SHCB injects a transient counter voltage pulse via a pulse transformer into the main power loop upon detection of an overcurrent condition and forces the fault current to change its original direction and cross zero to a negative peak value. A generation power electronic circuit on the primary side of the transformer controls the discharge of a capacitor to generate the counter voltage pulse during the first phase of each switching cycle of the fault interruption process. The power electronic circuit then changes the polarity of the injected secondary voltage and forces the fault current to change direction and cross zero again.

The invention discloses a stove firepower display control method, a stove and a range hood. The stove firepower display control method provided by the embodiment of the invention is applied to the stove. The cooker comprises a mechanical knob and a potentiometer. The mechanical knob is connected with the potentiometer. And when the mechanical knob rotates, the potentiometer is driven to rotate synchronously, so that the resistance of the potentiometer is changed. The stove is in communication connection with the range hood. The range hood comprises a control panel. The control method comprises the steps of obtaining output voltage of the potentiometer; determining the gas flow of the cooker according to the output voltage; and the gas flow is sent to the range hood, so that the firepower state corresponding to the gas flow is displayed through the control panel. Therefore, the firepower state of the kitchen range can be used as visual data to be displayed on the control panel of the range hood, and the problem that a user is difficult to accurately and timely identify the firepower condition of the kitchen range is effectively solved.

The invention provides a crown assembly and wearable equipment, the wearable equipment comprises the crown assembly, the crown assembly comprises a key cap and a key rod, the key cap comprises a first top plate and a first side plate, and the first side plate and the first top plate define a key cap groove; the key rod comprises a rod body and a rod connecting part; the rod body comprises a first end and a second end, the rod connecting part comprises a second top plate and a second side plate, the first end of the rod body is connected to the second top plate, and the second side plate and the second top plate define a key rod groove; the key rod is partially located in the key cap groove, and the key rod groove and the key cap groove are in the same direction. In the application, the key cap and the key rod in the crown assembly are separately and independently arranged, and the key cap and the key rod can be made of different materials, so that the crown assembly can present any color, the mechanical reliability of the crown assembly is ensured, and the balance between the appearance and the mechanical performance is realized.

The invention discloses an on-load tap-changer gear shifting method and device based on distance measurement, and belongs to the field of on-load tap-changer voltage regulation, and the method comprises the steps: receiving a gear shifting instruction, and obtaining a target gear according to the gear shifting instruction; according to the target gear and a preset distance and gear mapping relation, determining a target moving distance of a moving contact fixing cross rod; the driving motor drives the movable contact piece fixing cross rod to ascend and descend, and the ascending and descending distance is detected in real time through the distance measuring sensor; when the lifting distance is equal to the target moving distance, the motor is stopped, so that the first movable contact piece and the second movable contact piece are in physical contact with a target first static contact and a target second static contact corresponding to the target gear respectively; and the selector switch is driven to act, so that the target first static contact and the first movable contact piece as well as the target second static contact and the second movable contact piece form electrical connection, and gear shifting is realized. Therefore, by implementing the method and the device, the problems of insufficient positioning accuracy and reliability of gear shifting of the on-load tap-changer in the prior art can be solved.

This application provides a photovoltaic inverter and a photovoltaic system. The photovoltaic inverter includes a housing, a circuit board, cooling fins, a switch assembly, and PV ports. The circuit board is reversely fastened in the photovoltaic inverter. The circuit board partitions an accommodating cavity into a first subcavity and a second subcavity, and the first subcavity and the second subcavity accommodate a first device and a second device respectively. The second device includes an inverter power assembly fastened to a rear circuit board side. The cooling fins are located on a side that is of a bottom plate and that is away from a cover plate. The inverter power assembly is in thermally conductive connection to the cooling fins through a thermally conductive contact part. The switch assembly includes a knob, a connecting rod, and a switch body. The switch body includes breaking units. Pins of the breaking units are rigidly fastened to the rear circuit board side. In this application, the circuit board is reversely fastened in the photovoltaic inverter, and a large device is fastened to the rear circuit board side, so that both cooling effect and a product aesthetic feeling are considered. The switch body is rigidly fastened to the rear circuit board side through the pins. This reduces assembly difficulty of the photovoltaic inverter.

The application discloses a kind of on-off mechanism for processing phase-to-phase fault, including two single-pole double-throw switches and a third switch, single-pole double-throw switch includes first arc chamber and second arc chamber, first fixed contact is provided in first arc chamber, second fixed contact is provided in second arc chamber, first composite movable contact is provided between first arc chamber and second arc chamber, first composite movable contact one end is located in first arc chamber, first composite movable contact other end is located in second arc chamber, first composite movable contact is connected with first fixed contact when then is disconnected with second fixed contact, first composite movable contact is connected with second fixed contact when then is disconnected with first fixed contact;Third switch includes third arc chamber, third fixed contact and third movable contact are provided in third arc chamber.The on-off mechanism structure is simple, can realize one fault phase conduction and make another fault phase connect ground or public wire, and it is convenient to be used with existing screen cabinet, with important practical value.

The invention relates to the technical field of key structures of keyboards, and provides a key structure of a keyboard and a manufacturing method of the key structure. The key structure comprises a key cap body with a groove, and a plurality of welding pads are embedded in the groove. The at least one LED chip is arranged in the groove, is provided with a light-emitting surface and a plurality of side light-emitting surfaces, and is electrically connected to the welding pad through a welding wire; the first packaging body wraps the LED chip, and the thickness of the first packaging body is not smaller than the wire arc height of the bonding wire. The second packaging body covers the first packaging body and is filled in the groove; the first anti-dazzling screen is pressed on the surface of the second packaging body and does not protrude out of the groove; the second anti-dazzling screen is provided with a plurality of hollow through holes, is pressed on the surface of the first anti-dazzling screen and is not smaller than the first anti-dazzling screen in size. Therefore, the packaging stability of the LED light-emitting chip and the integration of the key module can be improved, the light leading-out path is effectively controlled, light dissipation is avoided, and the key backlight quality is improved.

The invention discloses a dual-optical-path keyboard with a silica gel elastic piece capable of shielding light. The dual-optical-path keyboard comprises the silica gel elastic piece and an FPC, and a plurality of chips are arranged on the FPC. And the chip is one of a full color control chip, a full load color control chip, a confluence color control chip, a load color control chip and a fantasy color control chip. The light-sensitive element is located under the silica gel elastic piece, the silica gel elastic piece is made of a light-transmitting color material and a light-shading color material, the GRB in the chip is an emission light source, one path of the GRB directly provides illumination for a key cap character, the other path of the GRB directly penetrates through the silica gel elastic piece to provide the emission light source for the light-sensitive element under the silica gel elastic piece, and one light source has two purposes. The invention provides the optical switch keyboard with serial-parallel hot standby, the communication circuit is simple, the reliability is high, a single single-sided FPC (Flexible Printed Circuit) can realize full-key no-impact and GRB indication, a keyboard MCU (Microprogrammed Control Unit) can communicate with the keyboard through a maximum 5PIN electrical network, and the optical switch keyboard can be widely applied to notebook computer production.

The present invention belongs to the technical field of electrical devices. Disclosed is a primary-secondary integrated smart ring main unit. The smart ring main unit comprises a mechanism chamber, cable bushings, an explosion-proof valve seat, a cable chamber, an operating mechanism, a switch linkage lock, a linkage mechanism, a low-voltage cabinet, umbrella-skirt bushings, and a circuit-breaker apparatus, wherein the several cable bushings are mounted on a top plate of the cable chamber; the explosion-proof valve seat is mounted on the top plate of the cable chamber; the mechanism chamber is mounted above the cable chamber; the circuit-breaker apparatus is mounted inside the mechanism chamber; the several umbrella-skirt bushings are mounted inside the mechanism chamber; the operating mechanism is mounted inside the mechanism chamber, and is arranged at the front end of the circuit-breaker apparatus; the linkage mechanism is arranged above the operating mechanism; the low-voltage cabinet is mounted above the mechanism chamber; and the switch linkage lock is mounted on the linkage mechanism. The problem in the prior art whereby switches of a ring main unit cannot be operated separately, easily resulting in the inability to open cabinet doors or the risk of electric shock when a fault occurs, is solved. The safety factor of the ring main unit is improved, and the universality thereof is increased.

The application discloses a circuit breaker and isolating switch linkage device for pole-mounted circuit breaker, wherein a main shaft rotates, and an insulating pull rod assembly is driven to move through a main shaft crank; a shift fork block in the insulating pull rod assembly pushes an isolating pin shaft in an isolating transmission assembly to move, and an isolating switch contact is driven to move through an isolating connecting rod and an isolating clamp; when an isolating limiting crank arm contacts a support, the isolating switch is closed to a position, the shift fork block is disengaged from the isolating pin shaft, and the isolating transmission assembly is no longer pushed. Through the connection relationship among the main shaft assembly, the insulating pull rod assembly, the isolating transmission assembly and a circuit breaker transmission assembly, the linkage of the circuit breaker and the isolating switch and the required action time interval of normal operation are realized, and the influence of the electric force of the isolating switch contact on the action of the circuit breaker is avoided. The application has the advantages of simple structure, small size, small number of components, high reliability and long service life.

The utility model discloses a mechanical lock interlocking system for a grounding switch of a gas insulated switchgear, which belongs to the technical field of insulated switches and comprises a circuit breaker operating mechanism and a three-position operating mechanism which are mounted in a mechanism compartment. The grounding interlocking device is arranged between the low-voltage compartment and the high-voltage compartment in a penetrating manner below the mechanism compartment; wherein the three-station operating mechanism, the circuit breaker operating mechanism and the grounding interlocking device are sequentially distributed from top to bottom, and every two of the three-station operating mechanism, the circuit breaker operating mechanism and the grounding interlocking device are mechanically linked; the circuit breaker operating mechanism and the three-station operating mechanism are respectively connected with the circuit breaker and the three-station isolating switch in the inflatable compartment; a rear lower door plate is installed behind the high-voltage compartment cabinet, and the grounding interlocking device is connected with the rear lower door plate. Operation and maintenance personnel must operate in sequence when wanting to open the rear lower door plate of the high-voltage compartment; by adopting the mechanical interlocking, programmed step operation of an operator can be ensured, the reliability is higher, and the personal safety of the operation and maintenance personnel can be further ensured.

A switch device includes a circuit board, a coil structure, a lower cover, an upper cover, an elastic part, and a sliding part. The circuit board gas a through hole running through the circuit board. The coil structure is disposed on the circuit board and surrounds the through hole. The lower cover us located over the coil structure. The upper cover is disposed on the lower cover. The lower cover and the upper cover form an accommodating space. The elastic part is located in the accommodating space. The sliding part passes through an opening of the upper cover and is configured to slide relative to the lower cover along a direction. The sliding body is configured to drive the sliding part to pass through the through hole along the direction to generate a switch signal corresponding to an inductance variance of the coil structure.

The application discloses a mechanical interlocking plug-in box, which comprises a box body, a box cover, and a first chamber and a second chamber formed by an end sealing plate in the box body; a lock foot mechanism is arranged in the first chamber, and a circuit breaker is arranged in the second chamber; a vertical sliding groove is formed on the surface of a guide movable plate of the lock foot mechanism; a limiting rod is horizontally arranged in the first chamber and is in limiting cooperation with the vertical sliding groove, and one end of the limiting rod extends into the second chamber along the axial direction of the rod to interlock the guide movable plate; a linkage operating mechanism is connected between the limiting rod and the circuit breaker, and is used for driving the limiting rod to cancel the limiting of the guide movable plate and synchronously controlling the circuit breaker to make a breaking action; and an opening and closing mechanism is connected between the linkage operating mechanism and the circuit breaker, and is used for interlocking the breaking state of the circuit breaker and hindering the circuit breaker to make a closing action. The application realizes the interlocking between the lock foot of the plug-in box and the opening and closing mechanism of the plug-in box, and improves the safety protection level.

The utility model discloses a relay which comprises a contact part and an arc blowing assembly. The contact part comprises two contact assemblies, and each contact assembly comprises two static contacts and a movable contact piece used for making contact with or being separated from the static contacts. The arrangement direction of the two static contacts of the contact assembly is defined as a first direction, the movement direction of the movable contact piece is defined as a second direction, the first direction is perpendicular to the second direction, and the direction perpendicular to the first direction and the second direction is defined as a third direction; the plurality of contact assemblies are arranged along a third direction; the arc blowing assembly comprises four permanent magnets, and the four permanent magnets are located on the two sides of the contact part in the first direction respectively and correspond to the four static contacts in position respectively. Wherein the magnetic poles of the surfaces, facing each other, of the two permanent magnets corresponding to the same contact assembly are opposite, and in the third direction, the magnetic poles of the surfaces, facing the corresponding static contacts, of the two adjacent permanent magnets are opposite.

The invention provides a circuit breaker fastener assembly and disassembly method and system based on thermally induced phase locking. The method comprises an installation stage and a disassembly stage. The installation stage comprises the following steps: assembling a circuit breaker assembly, pre-tightening a threaded fastener, and debugging an opening distance and an over travel to standard values; a first preset torque T1 is adopted for first-time fastening; the threaded fastener is heated to the target temperature Ttarget at the controllable heating rate through an electromagnetic induction heating device, and an accurate expansion gap is generated; carrying out secondary fastening by adopting a second preset moment T2 in a thermoplastic window period; and naturally cooling to form permanent thermally induced interference fit. The dismounting stage comprises the steps that a pre-cooling low-temperature medium is adopted to cool the threaded fastener to the target temperature Treve at the rapid cooling rate, and interference fit is converted into clearance fit; and lossless dismounting is realized. The invention relates to the technical field of circuit breakers.

The utility model provides a keycap pulling clip, which comprises two clamping pieces, the middle parts of the two clamping pieces are hinged, each clamping piece comprises a clamping handle, a hinging part and a clamping piece, the two ends of each hinging part are respectively connected with the corresponding clamping handle and the corresponding clamping piece, and the hinging parts of the two clamping pieces are hinged. According to the key cap pulling clamp provided by the utility model, the lever principle is utilized, the operation of pulling out the key caps is labor-saving, the holding part is designed, the holding part is held by a hand during operation, the holding feeling is comfortable, the clamping pieces have various widths, one key cap can be pulled out at one time, and the key caps can be pulled out at one time. The pulled-out keycaps can be accurately arranged and placed in the keycap packaging box; the two clamping pieces are hinged to each other to form a scissor foot structure, the keycaps are pulled out stably and reliably, and the problem that the keycaps are scattered everywhere is solved.

The utility model discloses a shading structure of a power key fingerprint light-emitting module, belongs to the technical field of power keys, and aims to solve the problems that the local light leakage phenomenon of a product is caused due to the fact that a locating notch is formed in the structural design, and the sheet-shaped light leakage phenomenon of the product is caused due to the fact that a shading glue position shrinks after injection molding. Comprising a light guide lens, an LED lamp, a first key, a second key, a fingerprint module, a flexible circuit board, a bottom plate, an elastomer material layer and an insulating material layer, the LED lamp is arranged on one side in the light guide lens, a containing through groove is formed in the light guide lens, the bottom plate is arranged on the bottom face of the containing through groove of the light guide lens, and the flexible circuit board is arranged above the bottom plate; according to the utility model, through the arrangement of the light guide lens and the first key, a positioning notch in the original light guide lens is removed, the structural position of light leakage is effectively reduced, the original positioning effect is independently changed into the first key, and the first key is designed into a connected whole, so that the first key has a positioning effect.