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32results about How to "No arcing phenomenon" patented technology
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Rapid double power supply switch device and working method thereof
InactiveCN103532218AExtended service lifeFast switching speedPower network operation systems integrationInformation technology support systemPower qualityCritical load
The invention provides a rapid double power supply switch device and a working method thereof, relates to a switch used for guaranteeing power supply continuity and the working method, and can effectively solve the problems of contact arcing, electrical energy loss and the like of a conventional switch. The device comprises a frequently-used power supply, a reserve power supply, a load, a circuit breaker I, a circuit breaker II as well as a switch unit I, a switch unit II, a data acquisition module and a total control module, wherein the structure of the switch unit I or the switch unit II comprises a full control type switching element insulated gate bipolar transistor I, a full control type switching element insulated gate bipolar transistor II, an uncontrollable semiconductor device diode I, an uncontrollable semiconductor device diode II, a buffer circuit I, a buffer circuit II, a drive circuit I and a drive circuit II. Serious affects of the problems such as temporary reduction of power supply voltage, short-term voltage interruption and the like on the load are reduced, and safe and stable operation of a power supply system is guaranteed. According to the rapid double power supply switch device and the working method thereof, power supply switch time reaches a millisecond level, seamless switching can be realized, both the rapidity and the transient characteristic are ideal, and strict requirements of a sensitive and critical load on the power supply reliability and electric energy quality are really met.
Owner:STATE GRID CORP OF CHINA +2
Arc-suppression circuit of alternating-current contactor and control method thereof
InactiveCN101625933AArc eliminationSimple structureElectric switchesRelaysElectricityAlternating current
The invention provides an arc-suppression circuit of an alternating-current contactor and a control method thereof, which are used for arc-suppression of alternating-current contactors, various relays and switch appliances. The arc-suppression circuit of the alternating-current contactor comprises a main switch K1 and a controllable double-end circuit A. The arc-suppression circuit of the alternating-current contactor is characterized in that the main switch K1 is a mechanical type switch, and the controllable double-end circuit A comprises a controllable double-end circuit A, a first voltage end and a second voltage end, wherein the first voltage end and the first electrode end P1 of the main switch are at the same end, and the second voltage end and the second electrode end P2 of the main switch are at the same end; the invention better solves the technical problem of severe fire striking and arc pulling phenomena which are difficult to solve in the structure of the prior similar product, and the control method is advanced. The invention has the advantages of no arc pulling, large current-carrying capacity, low cost, long service life, small volume, convenient installation, use and replacement and extensive application range, thereby being suitable for generalization, popularization and use in the field of electric appliances.
Owner:沈永年 +1
Variable frequency speed regulating system of high-frequency vibrating motor
ActiveCN101645683ANo arcing phenomenonGuaranteed safe operationMultiple ac dynamo-electric motors controlFrequency changerSpeed control system
A variable frequency speed regulating system of a high-frequency vibrating motor is disclosed, relating to construction tool. The motor in present system is incapable of achieving soft start and is liable to, while cessation, damage a frequency converter and arc in an AC contactor due to failing to forbid a branch control cabinet being closed on condition that the frequency converter is in operation, thus bringing potential safety jeopardy while raising the maintenance cost of system, and the interlock circuit is so complex as to be disadvantageous to inspection. A control circuit of the variable frequency speed control system comprises a detection circuit and a protection circuit, wherein, the detection circuit is provided with a signal detection end connected with a signal output end ofthe frequency converter, the detection circuit comprises a relay, the coil of which is serially connected in the detection circuit as well as a normally open contact and a normally closed contact of which are arranged in the protection circuit. The variable frequency speed control system of the high-frequency vibrating motor achieves the purpose of protecting the frequency converter and the AC contactor, prevents arc phenomenon of the AC contactor, enhances production safety while prolonging the service life of product, and has simple interlock circuit, which facilitates the inspection.
Owner:WOLONG ELECTRIC GRP CO LTD +1
Switching appliance for AC circuit
ActiveCN101944445AExtended service lifeExcellent performanceSwitch power arrangementsHigh-tension/heavy-dress switchesEngineeringControl switch
The invention discloses a switching appliance for an AC circuit, which comprises a control unit, a detection unit, at least one switch and at least one switch driving device. The switch driving device is connected with the switch and is used for controlling the on and off of the switch; the detection unit is used for detecting a working state of the switch and / or the switch driving device; and the control unit controls the switch driving device according to a signal detected by the detection unit. That the switch is on at the contact zero-voltage moment and the switch is off at the contact zero-current moment is guaranteed, and despite of the on / off of the switch, the switch can avoid an arcing phenomenon. When the switch is on, jitter is not generated, the frequent operation of the switch is allowed and the switch cannot be damaged. Therefore, an accident caused by the switch is avoided, and the service life of the switch is prolonged. The switching appliance has the advantages of excellent performance, novel and simple structure, high reliability, high maintenance and low manufacturing cost.
Owner:JIANGSU MODERN POWER CAPACITOR
Reverse connection protection method and photovoltaic power generation system
ActiveCN109510450ANo arcing phenomenonSingle network parallel feeding arrangementsPhotovoltaic energy generationEngineeringPhotovoltaic power generation
A reverse connection protection method and a photovoltaic power generation system are disclosed. The reverse connection protection method is applied to the photovoltaic power generation system. A plurality of PV branches are connected to an inverter in parallel in the photovoltaic power generation system, and each PV branch is connected with a fuse or a circuit breaker in series. The reverse connection protection method comprises the following steps: judging whether the polarity of the PV branches is opposite; if the polarity of the PV branches is opposite, controlling the switching state of each switch tube in the inverter so that the positive and negative poles of each PV branch are short-circuited and thus avoiding an arc pulling phenomenon when the fuse or the circuit breaker is disconnected.
Owner:SUNGROW POWER SUPPLY CO LTD
Large-current breaking device for isolation switch and isolation switch using same
ActiveCN104134566ANo arcing phenomenonHigh-tension/heavy-dress switchesAir-break switchesRotational axisEngineering
The invention relates a large-current breaking device for an isolation switch and the isolation switch using the same. The breaking device comprises a movable-side breaking device and a static-side breaking device, wherein the static-side breaking device comprises a circuit breaker, the circuit breaker comprises an arc distinguishing chamber and an operation handle, the operation handle is provided with a switching-off position and a switching-on position which are used for driving a movable contact and a static contact of the arc distinguishing chamber into a switching-off state and a switching-on state during rotation around a rotational axis of the operation handle, the movable-side breaking device comprises a shift rod fixedly arranged on a corresponding conductive rod, the length of the shift rod extends along a horizontal direction, and a shift structure is arranged on the shift rod and used for shifting the operation handle to be rotated into the switching-on position from the switching-off position before the movable contact and the static contact of the isolation switch are switched on during switching-on of the conductive rod and shifting the operation handle to be rotated into the switching-off position from the switching-on position before the movable contact and the static contact of the isolation switch are switched off during switching-off of the conductive rod. With the adoption of the breaking device provided by the invention, the isolation switch has the ability of breaking large current.
Owner:STATE GRID CORP OF CHINA +2
Haptic feedback module, preparation method thereof and touch control device thereof
ActiveCN109508097ANo arcing phenomenonGood Haptic Feedback EfficiencyInput/output for user-computer interactionGraph readingEngineeringVoltage
A haptic feedback module comprises a circuit board and a piezoelectric unit. The circuit board includes a first connection pad spaced apart and a second connection pad. The piezoelectric unit includesa piezoelectric layer, a first electrode, and a second electrode. The piezoelectric layer has an opposite first surface and a second surface, the first surface being adjacent to the circuit board. The first electrode extends from the second surface of the piezoelectric layer to the first surface of the piezoelectric layer in a thickness direction of the piezoelectric layer. The second electrode is formed on at least the first surface of the piezoelectric layer and is disposed at an insulating interval from the first electrode. The circuit board applies voltages to the first electrode and thesecond electrode through the first connection pad and the second connection pad, respectively. The piezoelectric layer generates haptic feedback according to the voltage. Also provided are a preparation method of the haptic feedback module and a touch control device using the haptic feedback module.
Owner:INTERFACE TECH CHENGDU CO LTD +2
Simplified pre-charging synchronous switch circuit of switched capacitor set
InactiveCN107302221ASimple structural designEliminate the difficulty of finding the correctReactive power adjustment/elimination/compensationReactive power compensationElectricityPower grid
The invention discloses a simplified pre-charging synchronous switch circuit of the switched capacitor set. A simplified pre-charging electric synchronization switch circuit of a switched capacitor set consists of a one-pole synchronous switch and a two-pole synchronous switch; in the two-pole synchronous switch, only one contact is provided with a pre-charging circuit 5 and a position detection module 4; a circuit is simple and is easy to install in a middle-voltage cabinet; when the synchronous switch is put into a capacitor set, after one single-pole synchronous switch is switched off, pre-charging is performed on the capacitor set through a pre-charging circuit and the two-pole synchronous switch is switched off after charging is done; a single three-pole synchronous switch mode is adopted; three poles of the synchronous switch synchronously produce current and have no surge; when the capacitor set is cut off, three single-pole synchronous switch modes are adopted; three contacts of the synchronous switch are switched on at a zero-crossing point; a switching fast time interval achieves a second level; and power grid voltage is separated from a capacitor set when the synchronous switch is switched on.
Owner:北京馨容纵横科技发展有限公司
Novel electronic loudspeaker for automobile
ActiveCN101499272AConvenient inspectionPromote repairEmergency protective circuit arrangementsSound producing devicesSound productionEngineering
The invention relates to a novel car electronic horn. For the existing contactless car electronic horn, an electronic circuit oscillation control sound production system is used to lead the horn to sound, electronic circuit components are too many, the structure is relatively complicated, the development and material costs are high, the manufacture process is relatively complicated and both the equipment and tooling costs are also higher. The electronic horn mainly consists of a wiring terminal (15). The wiring terminal (15) is internally provided with a circuit board assembly (10). The circuit board assembly (10) is connected with a magnetic coil (7) by a lead (13), is also respectively connected with a left male tab (11) and a right male tab (14) and is wrapped with a nylon injection structure (12) at the outside. The cathode hole of the wiring terminal (15) provided with two holes is connected with a shell (6) which inside comprises static armature with a counter bore. A diaphragm (2) is connected with moving armature (1). The invention is applied to the field of car electronic horns.
Owner:HARBIN GOODTIME ELECTRONICS
Automatic power-off charger
InactiveCN107104476AThere will be no overchargingExtended service lifeElectric powerBattery overcharge protectionElectrical batteryProgrammable logic controller
The invention provides an automatic power-off charger, and relates to a charging device, particularly an automatic power-off charger. The automatic power-off charger can automatically judge the charging time to conduct the power-off action according to the capacity of a battery. An input end, a rectifier, a transformer and an output end are connected in sequence. A power-off device is arranged between the input end and the rectifier. The output end is provided with a detection module. The power-off device is connected with the detection module. The detection module comprises a controller, a current transformer and a signal transmitter. The current transformer and the signal transmitter are connected together. The power-off device and the signal transmitter are connected with the controller respectively. The controller adopts a programmable logic controller. The power-off device comprises a contactor. The automatic power-off charger is safe and stable, and the service life of the automatic power-off charger is prolonged. The problem in the prior art that based on the timing function of a timer, the power-off action cannot be conducted according to the capacity of the battery can be solved.
Owner:高言
Solar simulator charging and discharging device and method, and solar simulator
InactiveCN110474606AHigh control precisionExtend your lifePhotovoltaic monitoringEmergency protective circuit arrangementsMicrocontrollerElectricity
The invention relates to a solar simulator charging and discharging device and method and a solar simulator. The device comprises a microcontroller, a relay switch circuit, a semiconductor switch circuit, an energy storage circuit, a constant light control circuit and a light source, and the microcontroller controls the relay switch circuit and the semiconductor switch circuit to be switched off and controls the energy storage circuit to discharge electricity to the light source through the constant light control circuit when receiving a flashing command signal, so that the light source flashes. According to the invention, rapid turn-off of the charging loop is achieved by turning off the semiconductor switch circuit; and the charging loop and the discharging loop are completely isolated by turning off the relay switch circuit, so that the influence of the charging loop on the constant-light control circuit in the discharging loop is blocked when a flash test is performed on the lightsource, and the control precision of the constant-light control circuit is improved.
Owner:谢兴荣
High-current breaking device for isolating switch and isolating switch using the breaking device
ActiveCN104134566BNo arcing phenomenonHigh-tension/heavy-dress switchesAir-break switchesRotational axisInterrupter
The invention relates a large-current breaking device for an isolation switch and the isolation switch using the same. The breaking device comprises a movable-side breaking device and a static-side breaking device, wherein the static-side breaking device comprises a circuit breaker, the circuit breaker comprises an arc distinguishing chamber and an operation handle, the operation handle is provided with a switching-off position and a switching-on position which are used for driving a movable contact and a static contact of the arc distinguishing chamber into a switching-off state and a switching-on state during rotation around a rotational axis of the operation handle, the movable-side breaking device comprises a shift rod fixedly arranged on a corresponding conductive rod, the length of the shift rod extends along a horizontal direction, and a shift structure is arranged on the shift rod and used for shifting the operation handle to be rotated into the switching-on position from the switching-off position before the movable contact and the static contact of the isolation switch are switched on during switching-on of the conductive rod and shifting the operation handle to be rotated into the switching-off position from the switching-on position before the movable contact and the static contact of the isolation switch are switched off during switching-off of the conductive rod. With the adoption of the breaking device provided by the invention, the isolation switch has the ability of breaking large current.
Owner:STATE GRID CORP OF CHINA +2
Brake switch-off and switch-on controller of high voltage alternating-current circuit breaker
ActiveCN103762125BEffective protectionReduce capacity requirementsProtective switch detailsElectric switchesHigh pressureAlternating current
The invention discloses a brake switch-off and switch-on controller of a high voltage alternating-current circuit breaker. The controller comprises an operating power source, a brake switch-on control interface circuit, a brake switch-off control interface circuit, a brake switch-on control operating part, a brake switch-off operating part, a safety brake switch-on circuit, a brake switch-on coil, a brake switch-off coil, a brake switch-on control outlet device and a brake switch-off control outlet device, wherein the brake switch-on operating part is connected with the brake switch-on control interface circuit, the brake switch-on control interface circuit is connected with the control end of the brake switch-on control outlet device, the brake switch-off operating part is connected with the brake switch-off control interface circuit, and the brake switch-off control interface circuit is connected with the control end of the brake switch-off control outlet device. The brake switch-off and switch-on controller of the high voltage alternating-current circuit breaker is simple in structure, reliable in operation and low in cost. The brake switch-off and switch-on controller of the high voltage alternating-current circuit breaker is high in brake switch-off and switch-on speed, the brake switch-off speed is smaller than or equal to 15 ms, the brake switch-on speed is smaller than or equal to 35 ms, and the brake switch-off time and the brake switch-on time of the circuit breaker are effectively shortened.
Owner:STATE GRID ZHEJIANG JIANDE POWER SUPPLY +3
Energy saving reactive compensation cabinet based on intelligent capacitor
PendingCN105186537ASmall surge impactNo arcing phenomenonReactive power adjustment/elimination/compensationReactive power compensationFiberCapacitance
The invention provides an energy saving reactive compensation cabinet based on an intelligent capacitor, belonging to an electric power control device, and comprises a cabinet body, in which a breaker, a controller and a compensating circuit are arranged. The compensating circuit comprises a plurality of sets of three-phase joint compensating circuits and single-phase separate compensating circuits; each three-phase joint compensating circuit and each single-phase separate compensating circuit both comprise a capacitor, and a switching switch used for controlling the capacitor to provide reactive compensation; the breaker is in connection with a three-phase power grid power supply, and is used for controlling power on / off states of a whole reactive compensation cabinet; the controller is in series connection between the breaker and the compensating circuit; the power supply of each phase is provided with a voltage detector and a current detector. The cabinet body is prepared by composite materials of reasonable compatibility, including: 50-60 wt% of epoxy resin, 10-25 wt% of alkali-free glass fibers, 10-25 wt% of carbon fibers, 0.5-5 wt% of flow modifiers, 1-3 wt% of heatproof modifiers, 3-5 wt% of compatilizers, 0.3-0.5 wt% of main anti-oxidants, 0.3-0.5 wt% of auxiliary anti-oxidants, and 1-3 wt% of processing auxiliary agents. The energy saving reactive compensation cabinet has sound compensation effects and a long service life, and is not easy to damage.
Owner:NINGBO CHEN LAN ELECTRIC EQUIP
A solar simulator charging and discharging device, method and solar simulator
InactiveCN110474606BHigh control precisionExtend your lifePhotovoltaic monitoringEmergency protective circuit arrangementsMicrocontrollerHemt circuits
The invention relates to a solar simulator charging and discharging device and method and a solar simulator. The device comprises a microcontroller, a relay switch circuit, a semiconductor switch circuit, an energy storage circuit, a constant light control circuit and a light source, and the microcontroller controls the relay switch circuit and the semiconductor switch circuit to be switched off and controls the energy storage circuit to discharge electricity to the light source through the constant light control circuit when receiving a flashing command signal, so that the light source flashes. According to the invention, rapid turn-off of the charging loop is achieved by turning off the semiconductor switch circuit; and the charging loop and the discharging loop are completely isolated by turning off the relay switch circuit, so that the influence of the charging loop on the constant-light control circuit in the discharging loop is blocked when a flash test is performed on the lightsource, and the control precision of the constant-light control circuit is improved.
Owner:谢兴荣
Reversing brake device of DC electric tool switch and DC electric tool switch
The invention provides a reversing brake device of a DC electric tool switch and the DC electric tool switch, and belongs to the technical field of an electric switch. The reversing brake device of the DC electric tool switch comprises a reversing device, which is connected between a motor and a DC power source, and is used for changing the direction of the current entering a motor by switching; and a brake device, wherein in a closed state, the two electrical connection ends of the brake device are directly and electrically connected to the two ends of the motor respectively to form a closed loop with the motor. According to the reversing brake device, when the reversing device carries out reversing switching, the brake device is in a closed state, and the brake device and the motor form the closed loop, so that larger instantaneous armature current generated during motor rotation can be consumed in time to prevent arc discharge of the reversing device during reversing switching, damage to the switch by sparks produced after arc discharge is prevented and service life of the switch is improved.
Owner:KEDU ELECTRIC CO LTD
Novel drop-out quick breaker
PendingCN112713068ANo arcing phenomenonCut off the fault current reliablyEmergency protective devicesElectrically conductiveCut-off
The invention relates to a drop-out quick breaker. The quick breaker comprises a mounting base, a vacuum arc extinguishing device, a detection control device and a conductive piece device, wherein the vacuum arc extinguishing device comprises a vacuum tube, a static contact and a moving contact which are arranged in the vacuum tube, and a traction mechanism which controls the moving contact to be disconnected and reset; the conductive piece device comprises a conductive body mechanism and a pushing mechanism fixed on the conductive body mechanism, the lower end of the conductive body mechanism is rotatably hung at the bottom of the mounting seat, the upper end of the conductive body mechanism is clamped on a conductive static contact on the mounting seat, and the conductive body mechanism comprises a conductive wire unit and a drop control unit; the pushing mechanism can drive the traction mechanism to drive the moving contact to be separated from the static contact; the pushing mechanism drives the traction mechanism and drives the falling control unit at the same time to realize falling of the conductor mechanism. The drop-out quick breaker can quickly, accurately and reliably cut off a fault line, prevents switching-on and reclosing failures of an outgoing line switch of a transformer substation, and enables a fault-free line to supply power normally.
Owner:中船安智(湖北)科技有限公司
High-frequency vibration motor frequency conversion speed regulation system
ActiveCN101645683BNo arcing phenomenonGuaranteed safe operationMultiple ac dynamo-electric motors controlCircuit complexityMotor speed
The utility model relates to a frequency conversion speed regulation system of a high-frequency vibration motor, which relates to construction tools. The motor in the current system cannot be soft-started and when it is stopped, it cannot be forbidden to close the branch control cabinet when the inverter is working, and the inverter is vulnerable and the AC contactor is easy to arc, which will increase the system maintenance cost. At the same time, hidden dangers are increased, and there are complicated interlocking circuits, which is not conducive to maintenance. The control circuit of the present invention includes a detection circuit and a protection circuit. The detection circuit is provided with a signal detection terminal, which is connected to a signal output terminal of the frequency converter. The detection circuit includes a relay, and the relay coil is connected in series in the detection circuit. The normally open contacts and normally closed contacts are set in the protection circuit. It achieves the purpose of protecting the frequency converter and the AC contactor, prevents the arcing phenomenon of the AC contactor, improves the production safety while prolonging the product life, and has a simple interlock circuit and convenient maintenance.
Owner:WOLONG ELECTRIC GRP CO LTD +1
Haptic feedback module, preparation method thereof, and touch device
ActiveCN109508097BNo arcing phenomenonGood Haptic Feedback EfficiencyInput/output for user-computer interactionGraph readingMedicineTouch Senses
A tactile feedback module includes a circuit board and a piezoelectric unit. The circuit board includes first connection pads and second connection pads arranged at intervals. The piezoelectric unit includes a piezoelectric layer, a first electrode and a second electrode. The piezoelectric layer has opposite first and second surfaces, the first surface is close to the circuit board. The first electrode extends from the second surface of the piezoelectric layer to the first surface of the piezoelectric layer in the thickness direction of the piezoelectric layer. The second electrode is at least formed on the first surface of the piezoelectric layer and is insulated from the first electrode. The circuit board applies voltage to the first electrode and the second electrode through the first connection pad and the second connection pad respectively. The piezoelectric layer generates tactile feedback based on voltage. A preparation method of the tactile feedback module and a touch device using the tactile feedback module are also provided.
Owner:INTERFACE TECH CHENGDU CO LTD +2
Arc-suppression circuit of alternating-current contactor
InactiveCN101625933BArc eliminationSimple structureElectric switchesRelaysElectricityCarrying capacity
The invention provides an arc-suppression circuit of an alternating-current contactor and a control method thereof, which are used for arc-suppression of alternating-current contactors, various relays and switch appliances. The arc-suppression circuit of the alternating-current contactor comprises a main switch K1 and a controllable double-end circuit A. The arc-suppression circuit of the alternating-current contactor is characterized in that the main switch K1 is a mechanical type switch, and the controllable double-end circuit A comprises a controllable double-end circuit A, a first voltageend and a second voltage end, wherein the first voltage end and the first electrode end P1 of the main switch are at the same end, and the second voltage end and the second electrode end P2 of the main switch are at the same end; the invention better solves the technical problem of severe fire striking and arc pulling phenomena which are difficult to solve in the structure of the prior similar product, and the control method is advanced. The invention has the advantages of no arc pulling, large current-carrying capacity, low cost, long service life, small volume, convenient installation, use and replacement and extensive application range, thereby being suitable for generalization, popularization and use in the field of electric appliances.
Owner:沈永年 +1
A method for facility farmland and facility farmland
ActiveCN106965708BReduce harmHigh outputPhotovoltaic supportsPV power plantsElectric power transmissionSpatial positioning
A photovoltaic system comprises a rack, a photovoltaic assembly, a set of rails, and a multifunctional robot operating on the rails. The photovoltaic system also comprises a fixed power source and more than two power transmission buses. The power transmission buses output power by using a sliding power taking manner, and comprise metal conductors on the rack and the rails. The fixed power source, the power transmission buses, an electric brush and a power consumption load of the multifunctional robot form a loop. The fixed power source continuously supplies power. In the prevent invention, rails are disposed on the rack of the photovoltaic assembly, and power is transmitted by using the rails, thereby providing the multifunctional robot with a comprehensive platform for spatial positioning, mobile positioning and power transmission. With the rail change machine, no person is needed on the site of the photovoltaic system. Functional components of the multifunctional robot comprise an agricultural machinery device, thereby providing a new solution for the agriculture, and resolving the site problem of photovoltaic power generation by using a manner friendly to the agriculture. An automatic electric plug device provides a new means for taking power by the agricultural robot in movement.
Owner:ANHUI JIULI MACHINERY EQUIP
A kind of reverse connection protection method and photovoltaic power generation system
ActiveCN109510450BNo arcing phenomenonSingle network parallel feeding arrangementsPhotovoltaic energy generationElectrical polarityEngineering
Owner:SUNGROW POWER SUPPLY CO LTD
Breaking device for isolating switch and isolating switch using the same
ActiveCN104134567BAvoid live currentNo arcing phenomenonHigh-tension/heavy-dress switchesAir-break switchesInterrupterElectric current
The invention relates to a breaking device for a disconnecting switch and the disconnecting switch using the same. The breaking device comprises a movable breaking device and a static breaking device, wherein the static breaking device comprises a circuit breaker, the circuit breaker comprises an arc extinguishing chamber and an operation handle, the operation handle has a switching position and a closing position which are used for driving a movable contact and a static contact of the arc extinguishing chamber into a switching state and a closing state during rotation of the operation handle around a rotation axis thereof, the movable breaking device comprises a shift rod fixedly arranged on a corresponding conductive rod, and a shift structure is arranged on the shift rod, and used for shifting the operation handle to be rotated into the closing position from the switching position before the movable contact and the static contact of the disconnecting switch are closed during closing of the conductive rod and shifting the operation handle to be rotated into the switching position from the closing position after the movable contact and the static contact of the disconnecting switch are switched during switching of the conductive rod. By the disconnecting device provided by the invention, the disconnecting switch has the ability of disconnecting large current, and the arc distinguishing chamber can be prevented from being energized for a long time due to serial connection of an auxiliary contact with the arc distinguishing device.
Owner:STATE GRID CORP OF CHINA +2
Switching appliance for AC circuit
ActiveCN101944445BNo jitterNo arcing phenomenonSwitch power arrangementsHigh-tension/heavy-dress switchesElectrical currentAc circuit
The invention discloses a switching appliance for an AC circuit, which comprises a control unit, a detection unit, at least one switch and at least one switch driving device. The switch driving device is connected with the switch and is used for controlling the on and off of the switch; the detection unit is used for detecting a working state of the switch and / or the switch driving device; and the control unit controls the switch driving device according to a signal detected by the detection unit. That the switch is on at the contact zero-voltage moment and the switch is off at the contact zero-current moment is guaranteed, and despite of the on / off of the switch, the switch can avoid an arcing phenomenon. When the switch is on, jitter is not generated, the frequent operation of the switch is allowed and the switch cannot be damaged. Therefore, an accident caused by the switch is avoided, and the service life of the switch is prolonged. The switching appliance has the advantages of excellent performance, novel and simple structure, high reliability, high maintenance and low manufacturing cost.
Owner:JIANGSU MODERN POWER CAPACITOR
Switch arc suppression circuit for switch devices and control method thereof
InactiveCN101587786BArc eliminationSimple structureElectric switchesElectrical resistance and conductanceCarrying capacity
The invention relates to a switch arc suppression circuit and a control method thereof. The switch arc suppression circuit comprises a main switch K1, a controllable three-terminal circuit A and a control circuit C; the main point is that a control unit E of the control circuit C is a combination circuit composed of a base bias resistor R3, an electron trigger signal switch T2, an electron trigger signal input port Vi, a triode T1, a regulated power supply voltage terminal Vcc, a regulated power supply earthing terminal GND, a collector bias resistor R2, an optical coupler IC and a limit current resistor R1. The invention excellently solve the serious technical problems of igniting, arcing phenomena that are difficult to solve by the similar products structure; the control method is improved; and the invention is featured with large current-carrying capacity, low cost, long service life, small size, convenient installation and use, and wide using range without arcing, and is suitable for popularizing in electrical appliance field.
Owner:沈永年 +1
Novel circuit breaker
InactiveCN103532089AFast switching speedSuppressed circulationArrangements responsive to excess currentPower qualityElectric energy
The invention provides a novel circuit breaker. According to the circuit breaker, inherent problems such as arcing of contacts of traditional mechanical switches, ageing of contact springs and the like can be effectively solved, switching speeds are greatly increased, service lives of the switches are prolonged, and the extreme requirements of sensitive and critical loads for the power supply reliability and the electric energy quality are met. The circuit breaker comprises a circuit breaker body, a protection unit, a data acquisition unit and a controller, wherein the circuit breaker body is arranged between a line incoming end of a main power supply line and a user; the protection unit is connected with the circuit breaker body in parallel; the data acquisition unit is connected with the circuit breaker body and acquires electric signals of the main power supply line through a sensing device; and the data acquisition unit and the protection unit are connected with the controller respectively. According to the circuit breaker, 'power switching' is actually formed when the circuit breaker is turned off, the switching time reaches the millisecond level, seamless switching can be realized, the rapidity and the transient characteristic are ideal, and the extreme requirements of the sensitive and critical loads for the power supply reliability and the electric energy quality are truly met.
Owner:STATE GRID CORP OF CHINA +3
Method and device for air sterilization and dust removal in vehicle passenger room
ActiveCN109127139BLow dielectric constantExcellent electrical conductivity and thermal conductivityDeodrantsElectrostatic separation detailsParticulatesMechanical engineering
Owner:星诺大气环境科技(南京)有限公司
Blood collection tube automatic dryer
ActiveCN103940211BEnsure safetyQuality assuranceDrying gas arrangementsDrying machines with progressive movementsBlood Collection TubeElectrical control
The invention discloses an automatic dryer for blood collection tubes. The automatic dryer comprises a drying module, a transmission set, an air control device, an electrical control device, an operation panel and a rack. The drying module comprises a heating box, a drying head, a drive unit and a drying support. The transmission set and the operation panel are both connected with the air control device and the electrical control device. The heating box is connected with the air control device. The drying head and the drive unit are both connected with the electrical control device. The drying heat is connected with the drive unit. An air pipe is connected between the heating box and the drying head. The drying head comprises a plurality of spray needles, a heat-preserving flow-guiding cavity and a flow-guiding distribution structure. The transmission set is provided with a tray sensing sensor and a tray stop device. By means of the automatic dryer, blood in the dried vacuum blood collection tubes can be fully fused with a reagent in a contact mode, the effect of medicament is maximized, more precise technical information is provided for clinical diagnosis, diagnostic accuracy is improved, and misdiagnosis risks are reduced.
Owner:普叶顿(上海)自动化科技有限公司
Contact anti-sticking control method, storage medium, control device and relay
ActiveCN109036964BNo arcing phenomenonExtended service lifeRelaysTime informationControl engineering
The invention discloses a contact anti-adhesion control method, a storage medium, a control device and a relay. The invention solves the problem that the contact sticks to each other due to the high-energy arc striking for many times when the electric control device is switched on and off. The technical scheme mainly comprises the following steps: the operation time of the electric control deviceis tested to obtain the operation time information of the switching on and off; Obtaining the occurrence time of the alternating current zero crossing point, defining the obtained zero crossing pointas the first zero crossing point and the corresponding occurrence time as the first occurrence time information, and estimating the occurrence time information of the zero crossing point after the first zero crossing point according to the first occurrence time information; If the switching-on condition or switching-off condition is met, According to the occurrence time information of the currentzero-crossing point as a reference, the closing operation is started with the preset closing operation time information in advance or the opening operation time information in advance. The invention can ensure that only small-energy arc striking occurs in the separating and closing processes of the electric control device, so that the service life is prolonged.
Owner:深圳市健思研科技有限公司
Device for preventing arc discharge of metal contacts
The invention belongs to sensor technologies and relates to a mechanical pressure annunciator or a pressure sensor or the like with metal contacts, in particular to a device for preventing arc discharge of the metal contacts. The device comprises copper foil, springs and a film, wherein the copper foil is composed of an upper copper foil body and a lower copper foil body, the film is clamped by the upper copper foil body and the lower copper foil body, the upper copper foil body and the lower copper foil body are welded with each other and are then closely bonded to the film after being welded so as to guarantee the air impermeability of the interior of the film, and the springs are arranged on the two sides of the lower copper foil body in the film. The device is welded to the metal contacts; when the metal contacts make contact with each other, the copper foil bodies in the film make contact with each other and compress the springs, and then a circuit is closed; when the metal contacts are separated from each other, the copper foil bodies in the film are separated under the action of the springs, and because helium is filled into the film, arc discharge will not occur even a current is too large. The device is simple in structure, small in size, capable of effectively preventing arc discharge and especially suitable for the mechanical pressure annunciator or the pressure sensor.
Owner:WUHAN AVIATION INSTR
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