437results about How to "Improve arc extinguishing performance" patented technology

The invention discloses a thunder-lightening induced solid-phase arc-extinguishing lightning arrester. The thunder-lightening induced solid-phase arc-extinguishing lightning arrester mainly consists of a lightning arrester shell, an arc-extinguishing rotary table, an electric conduction metal plate, a starting rod, a clamping rod, an induction coil, an arc-extinguishing barrel and a counting pointer; the arc-extinguishing rotary table is arranged inside the lightning arrester shell, and a flat spiral spring for pushing the arc-extinguishing rotary table to rotate is arranged at the central position of the arc-extinguishing rotary table; the electric conduction metal plate is arranged at the upper part of the arc-extinguishing rotary table; the arc-extinguishing rotary table is provided with a plurality of arc-extinguishing gas pills in the peripheral direction; one side of each arc-extinguishing gas pill is provided with a trigger electrode and a groove respectively, one end of each trigger electrode is connected with one of trigger ends of the corresponding arc-extinguishing gas pill through a lead, and the other ends of the trigger electrodes extend out of the edge of the arc-extinguishing rotary table; and the other of the trigger ends of the corresponding arc-extinguishing gas pill is connected with the electric conduction metal plate through a lead. The thunder-lightening induced solid-phase arc-extinguishing lightning arrester is simple in structure, reasonable in design, high in arc-extinguishing ability and stable and reliable to work, and the arc-extinguishing gas pills are changed quickly and conveniently.

The invention relates to a high voltage direct current breaker with multiple fractures and a tandem type. The breaker comprises a multi-fracture breaker, an oscillation loop and a dissipative element. The multi-fracture breaker includes a plurality of single-phase breakers and fractures of all the single-phase breaker are in series connection through connection buses; the multi-fracture breaker is respectively in parallel connection with the oscillation loop and the dissipative element through the connection buses; and a fracture of each the single-phase breaker is respectively in parallel connection with an RC equalizer circuit. According to the invention, fractures of a plurality of single-phase breakers are in series connection so as to form a multi-fracture tandem structure; effects of high drop-out voltage, heavy drop-put current and short drop-out time and the like are realized; and demands of ultra-high voltage and extra-high voltage direct current power transmission projects can be completely met. In addition, the oscillation loop in the invention is used for generating oscillation currents; the dissipative element is used for absorbing line energy and restricting overvoltages after currents are switched off; and the RC damping circuit is used for improving equalizing voltages between fractures of all the single-phase breakers.

The invention provides a large-current magnetic latching relay, a movable contact spring of the large-current magnetic latching relay, and a contact assembly of the large-current magnetic latching relay. The large-current magnetic latching relay comprises the contact assembly, an electromagnetic assembly, an armature assembly and a pushing clamp, and under the magnetic attraction action of permanent magnet steel inside the armature assembly, the contact assembly keeps in the normally open state or in the normally closed state; the contact assembly is triggered by pulse electric signals to be switched between the normally open state and the normally closed state, so that the electromagnetic assembly drives the armature assembly to drive the pushing clamp to shift, and the contact assembly is switched between the normally open state and the normally closed state through shifting of the pushing clamp. The movable contact spring of the large-current magnetic latching relay is made of elastic conductive materials and is fixedly provided with at least two movable contacts, the movable contact spring is provided with a fixed first end portion and a second end portion capable of elastically swinging, the movable contacts are fixed to the second end portion and are electrically connected through the movable contact spring, and the second end portion of the movable contact spring is driven by the pushing clamp to swing.

A dielectric insulation medium including a hydrofluoro monoether, the hydrofluoro monoether containing at least three carbon atoms. The insulation medium according has high insulation capabilities, in particular a high dielectric strength, and at the same time a low GWP. The invention further includes an insulation medium which is chemically and thermally stable also at temperatures above 140° C., which is non-toxic or has a low toxicity level, and which in addition is non-corrosive and non-explosive.

The invention provides an arc extinguishing structure applied to a molded case circuit breaker and the molded case circuit breaker. The arc extinguishing structure includes: an arc striking system, a magnetic blowing system, an insulating plate system and an arc extinguishing device; the magnetic blowing system includes a core system and a guide Magnetic system; the left and right magnetic guide plates are placed on the left and right sides of the arc extinguishing chamber casing, forming a magnetic field space between the left and right magnetic guide plates. Therefore, the arc extinguishing chamber is placed in the magnetic field space, and the magnetic field space The generated magnetic force acts on the arc entering the arc extinguishing chamber, accelerating the arc to move toward the outlet of the arc extinguishing chamber. The advantages are: the iron core and the left and right magnetic guide plates form a magnetic blowing system. The magnetic blowing system generates a magnetic field with the magnetic force lines inward. This magnetic field accelerates the arc and enters the arc extinguishing device through the arc striking system. The arc is elongated, and the arc-breaker is covered on both sides of the arc-extinguishing grid. The arc-breaker decomposes a large amount of gas under the burning of the arc, and the gas medium enhances the ability to deionize the arc. As a result, the arc extinguishing effect is comprehensively improved.

The invention discloses an electric energy management comprehensive monitoring system, and belongs to the technical field of power utilization monitoring. The electric energy management comprehensivemonitoring system comprises a user power utilization monitoring unit, wherein an output end of the user power utilization monitoring unit is electrically connected with a power distribution station monitoring unit, the power distribution station monitoring unit comprises a draught fan control module, an air conditioner control module, a gas monitoring unit, a sound-light alarm unit, a water levelmonitoring unit and an ultrasonic water level monitoring unit, and the fan control module is bidirectionally and electrically connected with the air conditioner control module. The starting, stoppingand running states of a transformer temperature fan are monitored in real time by monitoring the temperature in a transformer, and the air-conditioning temperature can be automatically adjusted, so that the temperature control and adjustment capacity of a transformer substation can be remarkably improved, the temperature of the transformer substation does not need to be controlled through manual inspection, the electric energy management comprehensive monitoring system can automatically adapt to the internal power of the transformer substation to change the heat dissipation strategy, improvesthe monitoring and management capability of the temperature of the transformer substation, remarkably reduces the manpower cost, and improves the regulation and control safety and stability.

The invention discloses a permanent magnet opening and closing type DC intelligent circuit breaker, comprising a base, an incoming busbar, a dynamic contact electrically connected with the incoming busbar, a dynamic contact supporting part, a static contact, an outgoing busbar electrically connected with the static contact, a static contact supporting part, an operating mechanism used for drivingthe dynamic contact to open and close and an arc quenching mechanism used for quenching arc; wherein, the arc quenching mechanism comprises an arcing shield and an arcing ring; the operating mechanism comprises a permanent magnet type electromagnetic actuating mechanism, an insulating driving rod and a clamping rod; the permanent magnet type electromagnetic actuating mechanism is provided with a telescopic actuating rod and a solenoid coil; one end of the clamping rod is connected with the middle of the dynamic contact supporting part in a rotary manner by a rotating shaft; the other end of the clamping rod is provided with a waist hole and is connected with one end of the insulating driving rod by a rotating shaft which passes through the waist hole; the other end of the insulating driving rod is fixedly connected with the actuating rod. The circuit breaker has simplified structure, fast breaking speed and few mechanical failure sources and can stably and reliably run for a long time.

A super-capacity lithium ion battery pack with a heat-transfer oil circulating radiating device mainly comprises a battery pack box body, a radiating pipe, a fin, lithium ion batteries and an oil conservator, wherein the battery pack box body adopts a full-oil charge seal type structure; the metal bellows expansion oil conservator is arranged at the top of the box body and is communicated with the battery pack box body through a guide pipe; clamping grooves are uniformly, internally and correspondingly formed in the top and bottom of the battery pack box body; each lithium ion battery is clamped between the clamping grooves which correspond up and down to keep vertical and stable; the fin is connected with the periphery of the battery pack box body; the connectors of the radiating pipe are respectively arranged at the upper and the lower end of the fin and communicated with the battery pack box body; under the heating, the heat-transfer oil forms a natural circulation convection in the battery pack box body. The lithium ion battery pack has a simple structure; the heat-transfer oil can serve as not only a cooling medium, but also an insulator, can continuously flow in the closed battery pack box body and the radiating pipe, without being corroded by moisture, is high in radiating, and can ensure the normal working of the super-capacity lithium ion battery pack.

The invention discloses a double-trigger air-blast arc-extinguishing lighting protection device. The double-trigger air-blast arc-quenching lighting protection device mainly comprises a lighting protector shell, an arc starting rod, an induction coil, an arc-extinguishing barrel and an upper cover, wherein a triggering loop I and a triggering loop II are respectively arranged on two internal sidesof the lighting protector shell, and a trigger delay element is arranged on the triggering loop II. The trigger delay element is a capacitor, or an inductor or a spark gap. When the trigger delay element is the capacitor, the capacitor is parallelly connected with an arc-extinguishing air pellet II at an air pellet triggering position II and is connected in the triggering loop II; when the trigger delay element is the inductor or the spark gap, the inductor or the spark gap is serially connected with the arc-extinguishing air pellet II at the air pellet triggering position II and is connectedin the triggering loop II. Compared with a single-trigger mode, a double-trigger mode of the double-trigger air-blast arc-extinguishing lighting protection device has the advantages that the amount of the arc-extinguishing pellets is increased, arc-extinguishing energy is enlarged, asymmetry of electric arc energy and arc-extinguishing energy is realized, and effective arc extinguishing is guaranteed.

The invention relates to a method for detecting leakage of insulating oil in an on-load tapping switch of a transformer by using SF6 gas, which comprises the following steps: firstly, calculating volume of the SF6 gas in the insulating oil added to the on-load tapping switch; adding the SF6 gas to the insulating oil for the on-load tapping switch according to a calculated value; selecting an oil sample of transformer body oil; and using a gas chromatograph to carry out chromatographic analysis for the selected oil sample of the transformer body oil. If the SF6 gas is detected out, which proves that the on-load tapping switch leaks the insulating oil; and if no SF6 gas is detected out, which proves that the on-load tapping switch does not leak the insulating oil. The method determines the problem of oil leakage of the on-load tapping switch by using an indirect method to avoid occurrence of misjudgment accidents, can judge failure property and approximate position inside equipment to provide reliable scientific basis for maintenance work, reduce unplanned power failure and limited loading time of a transformer, greatly reduce economic expenditure on manpower, physical resources and materials, and reduce labor intensity, insecurity factors and the like.

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.

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.

The invention provides a high altitude indoor high voltage alternating current combined vacuum circuit breaker. The high altitude indoor high voltage alternating current combined vacuum circuit breaker comprises a chassis, three sets of wiring boards and conducting bases are installed at the two sides of the chassis in an insulating mode respectively, the wiring boards are electrically connected to incoming line cables, the conducting bases are electrically connected with outgoing line cables, a touch knife, a wall penetrating polar column and a vacuum arc extinguish chamber are arranged between each set of wiring board and the conducting base in sequence, the chassis is further provided with an operating mechanism, first insulating pull rods are arranged between the operating mechanism and the touch knives, the operating mechanism is further provided with a second insulating pull rod in a linkage mode, the second insulating pull rod is provided with a drive rod in a linkage mode, thedrive rod is provided with a guide rod in a linkage mode, and the guide rod is connected with one end of the vacuum arc extinguishing chamber. The high altitude indoor high voltage combined vacuum circuit breaker has the advantages of being small in operating mechanism operation power, long in machine life, high in arc extinguishing capability, good in protecting effect and small in maintenance and can be more suitable for being used in a bad environment and a high altitude region.

The invention discloses an arc extinguish chamber structure of a disconnector. The arc extinguish chamber structure of the disconnector comprises a pair of arc insulation walls (1) arranged oppositely, a plurality of arc extinguish grid pieces (2) which are arranged between the arc insulation walls (1) and are parallel with one another at intervals, and an insulating grid plate (3) located above the arc extinguish grid pieces (2), wherein a plurality of extending non-through air exhaust gaps (4) are formed on the insulating grid plate (3), the air exhaust gaps (4) and the multiple extinguish grid pieces (2) which are parallel with one another at intervals are intersected to form a plurality of air exhaust holes used for discharging arc free steam, the non-through air exhaust gaps and the air exhaust holes formed by the air exhaust gaps and the arc extinguish grid pieces are favorable for discharging of the arc free steam, can block a returning path of metallics in the arc free steam and prevents the metallics from returning to the arc extinguish chamber again after the metallics are discharged from the arc extinguish chamber, and therefore the density of metal steam in the arc extinguish chamber is effectively lowered, and dielectric strength is improved.

The invention relates to a direct-current soft switching-off module and belongs to the high-voltage direct-current circuit breaker technical field. The direct-current soft switching-off module can be adopted as a switch contact and a high-power direct-current contactor contact of a high-voltage direct-current system so as to realize soft switching off in current switching off to eliminate electric arcs. According to the direct-current soft switching-off module, a metal contact of a switch is connected in parallel with three branch circuits, namely, a thermistor and thyristor series branch circuit, a capacitor and resistor series branch circuit and a varistor, wherein the thyristor can be replaced by a temperature control switch; the metal contact and each parallel branch circuit are adopted as an integrated body so as to form the direct-current soft switching-off module, and a shell and a mechanical shifting device can be additionally adopted, and as a result, a switch product can be formed. The direct-current soft switching-off module of the invention has the advantages of simple circuits, low cost of components, simple manufacturing process, excellent actual measurement arc quenching performance and high switching-off performance.