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300results about How to "Improve arc extinguishing effect" patented technology
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Multi-gap self-swelling strong-air-current longitudinal blow-out arc anti-thunder protecting device
ActiveCN103594210AImprove arc extinguishing effectHigh vulnerabilityInsulatorsCorona dischargeElectricityElectric power system
The invention discloses a multi-gap self-swelling strong-air-current longitudinal blow-out arc anti-thunder protecting device which comprises a longitudinal blow-out arc device arranged at an insulator string earthing terminal through a grounding side connecting hardware fitting, a grounding side electrode arranged on the longitudinal blow-out arc device, and a guide line side electrode arranged on an off-contact guide line. A protecting gap formed by the grounding side electrode and the guide line side electrode is parallel to an insulator string. The longitudinal blow-out arc device comprises an arc extinguishing device body and arc extinguishing tubes. The arc extinguishing device body is provided with a plurality of through holes for placing the arc extinguishing tubes. An angle formed by two arc extinguishing tubes which are arranged in the arc extinguishing device body is 90 degrees, and end portions of the two arc extinguishing tubes are in contact with each other. Each arc extinguishing tube is in a spiral shape. The grounding side electrode is connected with a first arc extinguishing tube through a guide line, and the grounding side connecting hardware fitting is connected with a last arc extinguishing tube through a guide line. The device is simple in structure, low in manufacture cost, safe and reliable, effectively reduces the power system transmission line thunderstrike tripping rate and the accident rate, and improves the stability of a power system.
Owner:王巨丰 +1
Intelligent high voltage duplicate power source converting switch
InactiveCN101504894ANo simultaneous power feeding accidentsSimple structurePower network operation systems integrationHigh-tension/heavy-dress switchesPower switchingStandby power
The invention discloses an intelligent high-voltage double-power switch, which comprises an airtight box, three main power terminals. three standby power terminals and three load terminals which are arranged on an airtight box body, and a power switching mechanism arranged in the airtight box. The power switching mechanism comprises a switching main shaft, and three switching contact knives which can be driven by the switching main shaft to rotate certain degrees. The intelligent high-voltage double-power switch has the advantages of simple structure and lower cost, and can effectively eliminate potential safety hazards.
Owner:黄勤飞
Contact system of plastic case breaker
ActiveCN101315852AAutomatically generate electromagnetic repulsionSpeed up repulsionHigh-tension/heavy-dress switchesAir-break switchesLow voltageEngineering
The invention discloses a contact system of a low-voltage switch device, such as, a circuit breaker, the contact system utilizes the principle of combining the electromagnetic repulsive force and the gas pressure, a structure with a moving contact and a static contact which can simultaneously swing and be repulsed and an automatic magnetic blow-out system, thus being able to accelerate the breaking speed between the moving contact and the static contact, widen the repulsion distance between the moving contact and the static contact, accelerate the arc extinguishment and further enhance the performance indicators for rapid flow limit and arc extinguishment. The contact system of the invention has compact structure, small volume and low production cost.
Owner:ZHEJIANG CHINT ELECTRIC CO LTD
An intelligent high-voltage dual power conversion switch
InactiveCN101266894ANo simultaneous power feeding accidentsImprove electrical lifePower network operation systems integrationSwitches with unconnected briding contactsElectricityStandby power
The invention discloses an intelligent high-pressure dual power supply shift switch, comprising a gas seal box, three primary power supply terminals disposed on the gas seal box, three standby power supply terminals and three load terminals, and a power supply shift mechanism set in the gas seal box; characterized that: the switch also comprises a three-phase vacuum breaker device, the three-phase vacuum breaker device comprises three vacuum interrupters, three moving contacts, three static contact and a operation mechanism; each of the moving contact / static contact is connected with the corresponding primary power supply terminal / standby power supply terminal via the power supply shift mechanism, each of the static contact / moving contact is connected with a corresponding load terminal. The invention has the advantages of simple structure, low costs, suitable for eliminating potential security hazard effectively.
Owner:黄勤飞
Copper-based electrical contact composite material and process for preparing same
This invention relates to a copper-base contact compound material used in low and medium voltage electric appliance switches and its preparation method. The material is composed of materials in the following weight percentage: Sn 0.1-0.5%, B carbide 0.1-5%, the mixed rare earth of fat La or fat Ce 0.05-2%, the rest is Cu. The material is prepared by mixing, cold- pressing powders, cold-pressing again and sintering to finish the product.
Owner:UNIV OF JINAN
Circuit breaker
ActiveCN104934270AStrong breaking abilityImprove arc extinguishing effectCircuit-breaking switch detailsProtective switch operating/release mechanismsEngineeringContact mechanism
The invention discloses a circuit breaker which comprises a housing, a contact mechanism, an arc extinction system, an operation mechanism and a magnetic tripping mechanism, wherein the contact mechanism comprises a dynamic contact and a static contact; a dynamic contact point is arranged on the dynamic contact; a static contact point is arranged on the static contact; the arc extinction system comprises an arc extinction system chamber; the arc extinction chamber is provided with an arc extinction grid-plate, an arc isolation plate and an arc striking assembly; the arc striking assembly comprises an upper arc striking plate and a lower arc striking plate; the lower arc striking plate is connected with a bimetallic strip; the bimetallic strip is matched with the dynamic contact in a linkage manner; the operation mechanism comprises a handle, a main bracket, a linkage assembly and a lock catch assembly; the lock catch assembly comprises a lock catch and a jump catch; the magnetic tripping mechanism comprises an iron core, a coil and a magnetic yoke; the arc extinction chamber comprises an arc inlet end and an arc outlet end; the arc outlet end is provided with arc outlet shunting partition regions which are a first arc outlet region and a second arc outlet region respectively; and arc guide outlets communicated with the first arc outlet region and the second arc outlet region are formed in the housing. The circuit breaker has the advantages of good breaking capacity, excellent arc extinction effect, safety and reliability.
Owner:ZHEJIANG CHUANGQI ELECTRICAL CO LTD
Preparing method for silver plating graphene enhanced copper-based electric contact material
ActiveCN105950904AGood electrical and thermal conductivityImprove welding resistanceTransportation and packagingMetal-working apparatusSilver plateChemical plating
The invention relates to a copper-based electric contact material used in a middle-low-voltage electric appliance switch, in particular to a preparing method for a silver plating graphene enhanced copper-based electric contact composite material. The copper-based composite material comprises, 0.5 wt.%-4 wt.% of bismuth, 0.05 wt.%-0.5 wt.% of yttrium, 0.1 wt.%-0.5 wt.% of graphene (silver plating), 1wt.%-5wt. / % of silver and the balance copper and other inevitable impurities. Copper-yttrium alloy powder is prepared and subjected to chemical silver plating, the copper-yttrium alloy powder and graphene subjected to silver plating treatment are subjected to ball milling and mixed evenly, and the electric contact material is finally prepared through pressing and sintering. The surface of copper powder is subjected to silver plating so that the anti-oxidation performance of the material can be improved, the graphene is subjected to silver plating treatment so that combination between the graphene and a copper base body can be enhanced, and therefore the comprehensive performance of the material is improved, and the copper-based electric contact material good in electric conductivity, resistant to electric arc erosion and excellent in welding resistance is finally obtained.
Owner:UNIV OF JINAN
Non-polar hydrogen mixed gas DC (direct-current) arc extinction system for DC contactor
ActiveCN102592890AEasy accessIncrease contactElectric switchesElectromagnetic relay detailsBreaking capacityArc extinction
The invention discloses a non-polar hydrogen mixed gas DC (direct-current) arc extinction system for a DC contactor. The DC arc extinction system comprises a moving contact, four pairs of moving and static arc striking contacts, a static contact, a grid group and a permanent magnet. The non-polar hydrogen mixed gas DC arc extinction system is non-polar, namely the arc extinguishing property can not be influenced by the change of the current direction. According to the non-polar hydrogen mixed gas DC arc extinction system, the arc striking contacts strike electric arc to smoothly move along a track of the arc striking contacts, the arc striking contacts, the grid group and the permanent magnet are reasonably arranged, and the electric arc between the moving contact and the static contact is better and rapidly extinguished, thus the short circuit caused by sudden reversing of current is solved, and the breaking capacity is further improved. Hydrogen or a hydrogen mixed gas can be inflated into the non-polar hydrogen mixed gas DC arc extinction system for realizing arc extinguishing.
Owner:BEIHANG UNIV
Arc-suppressing load switch
InactiveCN101425421AAvoid damageShort forceHigh-tension/heavy-dress switchesAir-break switchesElectrical and Electronics engineering
The invention discloses an arc-extinguishing load switch which comprises a base, a lower terminal post assembly, an upper terminal post assembly and an arc-extinguishing assembly, wherein the lower terminal post assembly comprises a lower conductive seat, a moving contact and a lower terminal post, an annular groove is arranged on the circumferential surface of an inner hole of the lower conductive seat, a spring toucher is arranged in the annular groove and tightly sleeves the moving contact under the elastic force action so as to ensure the conductive connection between the conductive seat and the moving contact; the lower terminal post is formed through the solidification of epoxide resin which is casted outside the lower terminal seat; and the upper terminal post assembly comprises an upper conductive seat, a fixed contact and an upper terminal post, wherein the fixed contact is provided with a plurality of claws with inward elastic force, and the claws grasp the moving contact under the elastic force action so as to ensure the conductive connection between the moving contact and the fixed contact; and the upper terminal post is formed through the solidification of epoxide resin which is casted outside the upper conductive seat.
Owner:XIAMEN HUADIAN SWITCHGEAR
High-precision sulfur hexafluoride gas density relay
ActiveCN103456561ALight in massTo achieve temperature compensationElectric switchesSulfur hexafluorideElectrical performance
The invention discloses a high-precision sulfur hexafluoride gas density relay which is good in shock resistance, high in precision, good in electrical performance, and long in service life. The high-precision sulfur hexafluoride gas density relay comprises a signal control part and an indicating value displaying part which are arranged in a shell body, wherein the signal control part and the indicating value displaying part are relatively independent, the indicating value displaying part comprises a display bourdon tube, a display end base, a machine core and a pointer, one end of the display bourdon tube is welded on a base, the other end of the display bourdon tube is welded on the display end base, and the shell body is an airtight air chamber and is filled with sulfur hexafluoride gas used for temperature compensation; the signal control part comprises a control bourdon tube, the base, a control end base, a plurality of signal generators and a signal adjusting mechanism, one end of the control bourdon tube is fixed on the base, the other end of the control bourdon tube is fixed on the control end base, the signal adjusting mechanism is arranged on the control end base, and the signal generators are installed on the base and are triggered to move by the signal adjusting mechanism.
Owner:SHANGHAI ROYE ELECTRICAL CO LTD
Bidirectional automatic switching looped device
ActiveCN104466779AImprove sealingWide variety of sourcesSwitchgear arrangementsElectric switchesEngineeringSwitchgear
Owner:WUXI VITZRO ELECTROMECHANICAL
Intelligent phase change switch control circuit
InactiveCN108933444ASimple structureReduce volumePolyphase network asymmetry elimination/reductionPolyphase network asymmetry reductionData acquisitionData acquisition module
The invention relates to a circuit, and discloses an intelligent phase change switch control circuit which is simple in structure, small in volume, low in cost and high in precision. The circuit comprises a power source module, a microprocessor module, an electromagnet execution module, a data acquisition module, a storage module, a display module, a button processing module, a brake opening timedetecting module, a communication module and a clock module; the data acquisition module, the storage module, the display module, the button processing module, the brake opening time detecting module,the communication module and the clock module are respectively connected with the microprocessor module; each power supply module in the power source module is connected to a corresponding module; the microprocessor module is responsible for data processing and control of other modules; the brake opening time detecting module is used for detecting a time interval between a current working phase brake opening completion time and power-on time of a trip relay, and the microprocessor module is used for adjusting compensation time of next disconnection operation according to a numeric value of adisconnection time interval; the communication module provides an external communication interface and is responsible for data transmission.
Owner:菏泽峥艳电力科技有限公司
Circuit breaker with ability of quick reaction and separation and quick reaction and separation method for circuit breaker
InactiveCN104022000AEasy to separateExtend your lifeContact mechanismsEmergency springsEngineeringContact group
The invention discloses a circuit breaker with the ability of quick reaction and separation and a quick reaction and separation method for a circuit breaker. The circuit breaker comprises a broken circuit contact group and a joint contact group; the broken circuit contact group comprises a movable broken circuit contact; the joint contact group comprises a movable joint contact; and a movable contact limiting device used for limiting position moving of the broken circuit contact and / or the joint contact is arranged between the broken circuit contact group and the joint contact group. The quick reaction and separation method for the circuit breaker comprises a broken circuit opening step: the broken circuit contact, earlier than the joint contact, reversely moves and is separated independently, or the broken contact and the joint contact reversely move and are separated at the same time. The broken contact is adopted for replacing a fixed contact in the traditional technology, in the case when the broken circuit needs opening and breaking, quick separation between the contacts is realized due to two-way separation action between the broken circuit contact and the joint contact, the electric arc phenomenon can be avoided or reduced, the service life of the circuit breaker is prolonged, and the method can be widely applied to various circuit breaker.
Owner:TECH POWER INT
Self-learning relay zero point arc extinguishing method and relay control circuit
ActiveCN107658180AArc extinguishing reductionGood arc extinguishing effectRelaysRelease timeEngineering
The invention provides a self-learning relay zero point arc extinguishing method and a relay control circuit. The self-learning relay zero point arc extinguishing method comprises the steps that the delay time of a controller is adjusted, the controller is enabled to give out a relay contact release signal after the delay time by starting from zero point crossing of an alternating current rising edge, and a relay releases a relay contact near the current zero crossing point. According to the self-learning relay zero point arc extinguishing method provided by the invention, the controller givesout a release signal to the relay after the delay time by starting from zero point crossing of the alternating current rising edge, adjustment is performed on the delay time according to a relation between a time point of actual release of the relay contact and a time point of zero point crossing of the alternating current rising edge, thereby enabling the release time point of the relay contactis enabled to be near the zero crossing point of the alternating current rising edge, and thus reducing the arc generated by relay release; and the delay time is automatically determined by the control circuit of the relay, and the method has a good arc extinguishing effect for various types of relays.
Owner:厦门芯阳科技股份有限公司
Arc extinguish chamber device for circuit breaker
InactiveCN102368451AImprove breaking capacityArc striking quicklyElectric switchesArc extinctionPhysics
The invention discloses an arc extinguish chamber device for a circuit breaker, which comprises a plurality of arc extinction grids which are fixed between two flash barriers and arranged at intervals. A notch is arranged at the bottom of each arc extinction grid, wherein the arc extinction grid located at the uppermost end is a top arc extinction grid, and the arc extinction grids which are located below the top arc extinction grid are lower arc extinction grids. The arc extinguish chamber device is characterized in that: the notches at the bottoms of the adjacent lower arc extinction grids are symmetrical bilaterally in shape; and the notches at the bottoms of the adjacent lower arc extinction grids are alternatively stacked and arranged in a fish scale shape. The arc extinguish chamber device provided by the invention is simple in structure, has better arc extinction property and can be used for effectively improving the breaking ability of the circuit breaker.
Owner:FORETECH ELEC APP JIANGSU CORP
Linear cutting fluid for neodymium-iron-boron permanent magnet material
InactiveCN103725387AImprove conductivityImprove the lubrication effectLubricant compositionHard waterMaterials processing
A linear cutting fluid for a neodymium-iron-boron permanent magnet material is characterized by comprising the compositions in percent by weight: 3%-9% of an aliphatic acid, 10%-15% of ethanolamine, 3%-6% of an amino boron phosphate, 5%-10% of a cleaning agent, 6%-9% of an antirust agent, 0.3%-1.0% of a hard water resistant agent, 0.3%-1.0% of an antifoaming agent and the balance water. The preparation method of the linear cutting fluid comprises: adding the aliphatic acid into a reaction kettle according to the amount of the formula, heating to 60-70 DEG C, adding ethanolamine with stirring, continuing to heat to 120-150 DEG C and reacting for 2 h, then cooling to 80 DEG C, successively adding the amino boron phosphate, the cleaning agent, the antirust agent, the antifoaming agent, the hard water resistant agent and water, and continuing to stir for 2 hours to obtain the finished product. The linear cutting fluid provided by the invention is low in cost, can realize long-acting antibiosis, belongs to environment-friendly product, is specially used in neodymium-iron-boron permanent magnet material processing technology, and has good cutting, cooling and rust resisting effects.
Owner:SHENYANG POLYTECHNIC UNIV
Contactor
ActiveCN104362042AImprove arc extinguishing effectSimple structureElectromagnetic relay detailsEngineeringElectromagnet
A contactor comprises a base component, a foundation component and a top cover. The base component comprises a base and an electromagnet disposed in the base. The foundation component comprises a foundation, and contact components, arc extinguishing units and a contact support which are disposed in the foundation. Inter-electrode partitions are disposed on two sides in the foundation to form unit cavities for containing conductive systems. One independent arc extinguishing unit and one contact component including a static contact are disposed in each unit cavity. Each arc extinguishing unit comprises an arc extinguishing chamber and an arc extinguishing grid piece disposed in the arc extinguishing chamber. The contact support is disposed on the middle portion of the foundation. A contact bridge is disposed on the contact support. Two ends of the contact bridge is provided with movable contacts matched with the static contacts on two sides. One end of the contact support is connected with a movable iron core. The top cover is fixedly connected with one end of the foundation. The other end of the foundation is fixedly connected with the base. The movable iron core corresponds to the electromagnet in the base. The contactor using the independent arc extinguishing units is good in arc extinguishing effect, simple in structure, easy to produce, energy saving and environmental friendly.
Owner:ZHEJIANG CHINT ELECTRIC CO LTD
Arc extinguishing and/or insulating electrical equipment
ActiveCN111211515ALittle or no effect on temperatureLittle or no effectSwitchgear arrangementsButeneEngineering
The invention belongs to the technical field of electrical equipment, and relates to arc extinguishing and / or insulating electrical equipment. According to the arc extinguishing and / or insulating electrical equipment of the invention, trans-1, 1, 1, 4, 4, 4-hexafluoro-2-butene or a mixed gas containing trans-1, 1, 1, 4, 4, 4-hexafluoro-2-butene is used as a medium-voltage and high-voltage arc extinguishing and / or insulating medium; the insulating medium has good electrical insulation and arc extinguishing performance, can greatly improve insulation capability, replaces the filling of SF6 in the arc extinguishing and / or insulating electrical equipment and reduces the influence of SF6 emission on the environment; and therefore, the problem of SF6 emission can be fundamentally solved, and theapplication temperature range of the arc extinguishing and / or insulating electrical equipment can be expanded.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Cabin static contact-free non-SF6 gas insulated isolating switchgear
The invention discloses a cabin static contact-free non-SF6 gas insulated isolating switchgear, and belongs to the field of medium-voltage switchgears. For the problems that in the prior art, the non-SF6 gas insulated switchgear is poor in arc extinguishing effect, poor in insulativity and weak in safety, the cabin static contact-free non-SF6 gas insulated isolating switchgear comprises an air chamber, a mechanism chamber, an instrument chamber, a cable chamber, a pressure release chamber and a busbar connector chamber; the air chamber comprises a busbar connector, a circuit breaker, a three-position switch, a busbar, a lead-out bushing and a gas tank which are connected in sequence, the three-position switch, the circuit breaker and the busbar are installed in the closed gas tank, the busbar connector and the lead-out bushing are installed on a gas tank shell, the gas tank is filled with non-SF6 insulating gas, and the circuit breaker is an enclosed type vacuum arc extinguishing circuit breaker. The switchgear is free of maintenance, damage of a severe environment to the insulativity is effectively prevented, and normal and safe operation of the switchgear is guaranteed.
Owner:JIANGSU DAQO CHANGJIANG ELECTRICAL
Arc guiding and extinguishing apparatus and DC breaker using same
ActiveCN102931041AImprove arc extinguishing performanceImprove arc extinguishing effectCircuit-breaking switch detailsDc circuit breakerElectric current
The invention discloses an arc guiding and extinguishing apparatus, as well as a DC breaker using the arc guiding and extinguishing apparatus. The arc guiding and extinguishing apparatus comprises a U-shaped motor groove and an arc extinguishing cover component which are mutually connected, wherein a U-shaped magnet yoke is arranged in a hollow cavity of the U-shaped motor groove; a magnetic material block is respectively arranged on each side of the upper sides of two sidewalls of the magnet yoke; and a reversed U-shaped magnetic path is formed by the magnetic material blocks and an arc extinguishing grid sheet in the arc extinguishing cover component. The magnetism generated by the current in a conductive circuit in the U-shaped magnet yoke and the reversed U-shaped magnetic path has a strong magnetic blowing force on the arc which is instantly generated when a movable contact and a static contact are released from contact, so as to blow the arc into the arc extinguishing cover component to extinguish the arc. With the adoption of the arc guiding and extinguishing apparatus, as well as the DC breaker using the arc guiding and extinguishing apparatus, the problem that the arc guiding effect on the arc near to the dynamic contact by the arc guiding device in the prior art is poor is solved; and the arc guiding and extinguishing apparatus, as well as the DC breaker using the arc guiding and extinguishing apparatus is excellent in arc guiding effect, strong in arc extinguishing ability, short in arc spraying distance and wide in application range for all arcs between the dynamic contact and the static contact.
Owner:ANDELI GRP
Dropping type fuse
InactiveCN101937808AIncrease contact pressureImprove arc extinguishing effectProtective switch operating/release mechanismsAgricultural engineeringMotion Mode
The invention discloses a dropping type fuse, comprising a fuse holder, an upper contact seat, a lower contact seat, a switching on / off mechanism, an isolator, an upper wiring terminal, a lower wiring terminal, an upper insert and a lower insert. The upper end of the fuse holder is in opening / closing connection with the upper contact seat, the lower end of the same is rotatably connected with the lower contact seat, the fuse holder comprises a fuse pipe, a lever mechanism arranged on the upper part of the fuse pipe, an upper contact arranged on the upper end of the lever mechanism, a lower connection sleeve sleeved on the lower part of the fuse pipe and a lower contact connected on the lower connection sleeve, the upper contact seat is connected with the upper wiring terminal, the switching on / off mechanism is connected with the upper insert, the upper contact seat is movably connected with the switching on / off mechanism through a linkage pin, the upper contact comprises an upper bracket, a spring seat, a guide rod, an upper contact seat body, and a pressure spring, and the switching on / off mechanism comprises a tripping device, a locking device, a resetting device and a guiding structure. The invention ensures that the switching on / off operations is more labor-saving through the measures of changing the motion mode of the upper contact seat, additionally arranging the switching on / off mechanism and the like.
Owner:浙江赛菲特电气有限公司
Copper-aluminium-base electric contact composite material
The invention discloses a copper-aluminium-base electric contact composite material. The preparation method comprises the following steps: weighing the following raw materials in percentage by weight: 50-65% of copper, 25-40% of aluminium, 5-10% of silver, 1-5% of tin, 1-3% of boron carbide and 0.05-1% of lanthanum-rich or cerium-rich mixed rare earth; making the mixed rare earth and the copper into mixed-rare-earth-copper powder; mixing the copper powder, the aluminium powder and the tin powder in a ball mill mode; and cold-press-molding the powder, sintering, secondary molding, secondary sintering, and cooling to prepare the copper-aluminium-base electric contact composite material blank. The invention selects copper and aluminium as the base; copper and aluminium have the advantages of low price and abundant resources; and the electric conductivity, the heat conductivity, the fusion welding resistance, the current erosion and the frictional characteristic of the copper and the aluminium meet the requirements for electric contact material bases. The copper-aluminium-base electric contact composite material of the invention has the advantages of strong fusion welding resistance, favorable oxidation resistance and favorable wear resistance, thereby being a low-price substitute for silver alloy electric contacts which are frequently used in low-voltage and medium-voltage switches.
Owner:李浩
Automatic transfer switch electric appliance for AC/DC mixing device
InactiveCN101350260AImprove arc extinguishing effectImprove electrical performanceElectric switchesTransfer systemStandby power
The invention relates to an automatic transfer switching equipment of the alternating-current / direct-current mixing apparatus, which aims at solving the problem that the switching process of an existing automatic change-over switch can not realize the switching between the alternating current main and the direct current main. The equipment is composed of a bottom board, a master control part, arc-extinguishing equipments A and B, and an input terminal a main shaft, a movable contact, an output terminal and a fixing contact of the alternating-current side,, an input terminal, a main shaft, a movable contact, an output terminal, a fixing contact and an insulating plate of the direct-current side, wherein the master control part, a switch part of the alternating-current and a switch part of the direct-current side are fixed on the bottom board, and the switch parts of the alternating-current side and the direct-current side are separated by an insulation plate. The automatic transfer switching equipment has two sets of independent transfer systems, which can respectively switch on and broke the alternating current main and the direct current main, when one of the common power supply and the stand-by power supply of a user is the direct current power supply and the other is the alternating power supply, the switching between the two power supplies can be realized through using the same change-over switch, and the invention has the advantages the application range is wide, the operation and use is convenient and flexible, and the automatic transfer switching equipment is beneficial for the spread.
Owner:深圳市泰永科技股份有限公司
Plug-in module of surge protector
ActiveCN102412100ASimple processImprove reliabilitySwitch operated by excess voltageSwitching device condition indicationOvervoltageCoupling
The invention discloses a plug-in module of a surge protector, comprising an upper cover, a lower cover, a state coupling rod, an overvoltage protecting and connecting component and a state indicator, wherein the upper cover and the lower cover are combined to form a shell of the plug-in module of the surge protector, the lower cover comprises a central mould frame and a side mould frame, an open hole is formed at the bottom of the side mould frame; the state coupling rod is arranged in the side mould frame of the lower cover and provided with a push rod, the push rod is penetrated through the open hole and extended out of the lower cover, and the push rod comprises a communication antenna; an energy storing spring is arranged in the side mould frame and connected with the state coupling rod for pushing the state coupling rod to move during malfunction; the overvoltage protecting and connecting component is arranged in the central mould frame of the lower cover; and the state indicator is positioned at the top of the lower cover and covered by the upper cover.
Owner:SEARI ELECTRIC TECH
Residual-current circuit breaker
PendingCN113035661AGood disconnectTo achieve electricitySwitch operated by current/voltage unbalanceSwitching device condition indicationControl theoryElectric shock
The invention relates to a residual-current circuit breaker. The circuit breaker comprises a shell, a handle, a wire outlet end, a wire inlet end, an indication button, an electromagnetic system, an L-pole arc extinguishing cover and an electric leakage circuit board and further comprises an L-pole operating mechanism and an N-pole operating mechanism which are arranged in the shell; a power taking mechanism, wherein the power taking mechanism is used for supplying power between a magnet yoke and an electric leakage circuit board on the electromagnetic system, and the power taking mechanism comprises a control piece which is arranged on the handle and used for controlling connection and disconnection between the magnet yoke and the electric leakage circuit board; a tripping mechanism, wherein the tripping mechanism comprises a voltage tripper and a tripping rod rotationally arranged in the shell, and an ejector rod on the voltage tripper pushes the tripping rod to move so as to drive a linkage piece on an operating piece to move, and the tripping rod is further provided with an elastic piece used for driving the tripping rod to rotate towards the linkage piece and driving an indication button to move upwards; and an N-pole arc extinguishing device. The circuit breaker is advantaged in that arc extinguishing can be conducted on the N pole, the arc extinguishing effect is good, the tripping effect is better, and when the circuit breaker is disconnected, the load end does not have the feeling of electric shock.
Owner:ZHEJIANG TENGEN ELECTRIC
Oil protection direct-action electricity relay
InactiveCN101452793AExtended service lifeImprove arc extinguishing effectElectric switchesElectromagnetic relay detailsElectricityEngineering
The invention provides an oil protection directly-operated relay, which comprises a moving contact, fixed contacts, coils and an iron yoke, wherein the two fixed contacts are straightly fixed on the inner wall of the end face of a closed cylindrical shell side by side; the moving contact adopts a cylindrical shape; the inside of the moving contact is provide with a magnet; an inner cavity of the closed cylindrical shell is filled with transformer oil; the shell is fixed above a straight-cylinder type electric magnet; an iron core of the electric magnet and the magnet in the moving contact are positioned in the same axial line; and the iron core is positioned under the magnet. The transformer oil has excellent arc extinction function, and the contacts have long service life, thereby prolonging the service life of the relay.
Owner:周柔刚
Melamine-epoxy glass fiber tube and preparation method thereof
ActiveCN111040382AImprove arc extinguishing effectHigh mechanical strengthGeneral water supply conservationPolymer scienceFirming agent
The invention discloses a melamine-epoxy glass fiber tube and a preparation method thereof. The melamine-epoxy glass fiber tube is characterized in that the melamine-epoxy glass fiber tube is an overlapped multi-layer tubular composite material prepared by rolling and pressing a halogen-free flame-retardant high-strength resin glass fiber cloth prepreg at 75-135 DEG C and carrying out curing and molding at 65-165 DEG C, wherein the prepreg is a glass fiber impregnated material which is formed by coating glass fiber cloth with a halogen-free flame-retardant high-strength resin adhesive and thenbaking the glass fiber cloth, and has a resin semi-cured product on the glass fiber cloth; and the halogen-free flame-retardant high-strength resin adhesive is prepared by mixing melamine resin, epoxy resin, a phosphorus-containing compound, a curing agent, inorganic powder, an accelerant and a solvent. The melamine-epoxy glass fiber tube is particularly suitable for fusing overload protection systems of power equipment in the industries of modern low-voltage power transmission and transformation, large and medium-sized power equipment, electric locomotives, photovoltaic (wind energy) power stations, large steel, engineering machinery and the like.
Owner:SICHUAN DONGFANG INSULATING MATERIAL
Zigzag sync compression arc extinction and lightning protection device of parallelly arranged arc extinction channels
PendingCN107742559AAvoid damage to the lightning protection deviceRelieve pressureSpark gap detailsInsulatorsMeanderEngineering
The invention discloses a zigzag sync compression arc extinction and lightning protection device of parallelly arranged arc extinction channels. The zigzag sync compression arc extinction and lightning protection device comprises a lightning protection device body (1) and an arc striking electrode (3), wherein an arc extinction path composed of the several arc extinction channels parallelly arranged from top to bottom is arranged inside the lightning protection device body; arc extinction pipes (5) are placed in all the arc extinction channels, wherein the head end of the arc extinction pipe in the first arc extinction channel is electrically connected with the arc striking electrode (3), the tail end of the arc extinction pipe in the last arc extinction channel is electrically connected with a connecting hardware fitting (4), and the ends of every two adjacent arc extinction pipes are connected through a three-way pipe (6) and two T-shaped arc guide pipes (9); the transverse ends andthe longitudinal ends of the T-shaped arc guide pipes (9) are embedded in the arc extinction pipes (5) and the three-way pipes (6) respectively. The zigzag sync compression arc extinction and lightning protection device is simple in structure, reasonable in design, higher in arc extinction capability and stable and reliable in work.
Owner:王巨丰
Airflow partition type arc extinguishing mechanism of power circuit breaker
ActiveCN106783445AReduce gapImprove arc extinguishing effectCircuit-breaking switch detailsEngineeringPower circuits
The invention belongs to the technical field of power circuit breakers, and particularly relates to an airflow partition type arc extinguishing mechanism of a power circuit breaker. The airflow partition type arc extinguishing mechanism comprises a cylinder, a push rod, an oscillating bar, an arc guide vane, an electric power fixed end, a toothed bar, a piston, a fixed shaft, an oscillating plate, a fixed plate and a gas outlet groove, wherein when arc is generated by the oscillating bar and the electric power fixed end, the arc arrives to the upper end of the oscillating plate; after the oscillating bar drives the oscillating plate to oscillate at an appointed position, a gap is maintained with the lower end of the fixed plate; the oscillating bar drives air compressed by the piston to enter into a main ventilation passage and a side ventilation pipe, and gas in the main ventilation passage flows to generate negative pressure at the position of the gap, so that air between the oscillating plate and the concave surface of the fixed plate flows into the main passage; gas in the side ventilation pipe flows upwards from the gas outlet groove through an airflow cavity, the arc is divided into three sections, and the divided arc sections enter into the main passage along with the flowing of air, so that the energy accumulation of the arc is reduced until the arc is extinguished. The arc is blocked by using airflow, and the arc is guided through the airflow, so that a preferable arc-extinguishing effect can be achieved.
Owner:泰安泰山高压开关有限公司
Vacuum arc-extinguishing device for ultrahigh-voltage isolation
InactiveCN101834088AAvoid ablationSolve the problem of circulating arc extinguishingHigh-tension/heavy-dress switchesAir-break switchesReliable transmissionUltra high voltage
The invention discloses a vacuum arc-extinguishing device for ultrahigh-voltage isolation, which comprises a power part, an energy-storing unit, an executing part and an arc-extinguishing part. In the invention, a movable conductive rod of an isolating switch is used as a power source, and an arc-extinguishing chamber is opened or closed by a shifting fork-driving mechanism. When the isolating switch is switched on, the arc-extinguishing device is firstly switched on and bears a switching-on transfer current before contacting with a main contact. When the isolating switch is switched off, the main contact of the isolating switch is firstly switched off, and the arc-extinguishing device temporarily conducts the current and finally switches off to take the arc-extinguishing action. The invention solves the circumfluence and arc-extinguishing problems by the series compensation of a switching bus of the parallel-connected ultrahigh-voltage isolating switch and has the advantages of reasonable structure, reliable transmission, convenient operation and good arc-extinguishing performance.
Owner:SHANDONG TAIKAI VACUUM SWITCH
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