12results about How to "Increase arc voltage" patented technology

The utility model discloses an arc extinguishing system of a circuit breaker. The arc extinguishing system comprises an arc extinguishing device, a contact system, an air outlet assembly and a support. The arc extinguishing device is internally provided with segmented arc extinguishing grid sheet groups, and a plurality of expanded arc extinguishing grid sheet groups and arc extinguishing grid sheet groups are sequentially arranged at intervals, so that the number of arc extinguishing grid sheets is increased, and an electric arc generated by opening is divided into more short arcs, thereby improving the electric arc voltage and improving the electric arc extinguishing capability of the arc extinguishing device. Besides, the exhaust holes in the first insulating plate of the air outlet assembly are uniformly arranged, the positions of the exhaust holes in the second insulating plate correspond to those of the expanded arc-extinguishing grid groups, and the size of the exhaust hole corresponding to the expanded arc-extinguishing grid group in the middle is smaller than that of the exhaust holes corresponding to the expanded arc-extinguishing grid groups at the two ends. And the exhaust holes on the bracket correspond to the expanded arc-extinguishing grid sheet group in position and are the same as the expanded arc-extinguishing grid sheet group in size. According to the scheme, the arc extinguishing performance of a product can be improved on the premise of not changing the size of the arc extinguishing chamber when the circuit breaker breaks the fault current.

The utility model relates to an operating mechanism and switch equipment, and the operating mechanism includes support, buckle, lever, escapement component, upper connecting rod, lower connecting rod and main tension spring. The support contains limit position axle and both sides support wall, and the wall is equipped with lever, buckle rotation center, the second rotation department of buckle is connected buckle rotation center, and has upper connecting rod rotation center, the first rotation department of lever is connected lever rotation center, and again buckle axle contacts again buckle surface. The lock catch and traction rod of escapement component all turn relative to the support, and again buckle and buckle surface realize again buckle and release. The third rotation department of upper connecting rod is connected buckle upper connecting rod rotation center, and has second pin part, lower connecting rod rotation center, and the fourth rotation department of lower connecting rod one end is connected lower connecting rod rotation center, and the other end has contact head support rotation center. The both ends of main tension spring hang ear hook first, second pin part, and exert tension on lever and upper connecting rod. The utility model discloses operating mechanism realizes the preposition of upper connecting rod and lower connecting rod, so that arc extinguishing system can be located below operating mechanism and upper connecting rod and lower connecting rod.

The utility model discloses a multi-grid switch unit and a rotary switch. One end of a first static contact arc striking part is connected with a first static contact contact part, and the other end of the first static contact arc striking part is connected with a first static contact connecting part; the inner side of the first arc extinguish chamber is provided with a first magnetic system assembly, and the inner side of the second arc extinguish chamber is provided with a second magnetic system assembly. The inner sides of the first arc extinguish chamber and the second arc extinguish chamber are arc-shaped; a first insulating arc-isolating cover is arranged on the inner side of the first magnetizer, a first permanent magnet is arranged in the first magnetizer, and the first permanent magnet is fixedly connected with a third magnetizer. According to the utility model, the space of the arc extinguish chamber and the number of the metal grid sheets can be increased under the condition of limited volume of the switch unit, electromagnetic force for driving an arc to move towards the arc extinguish chamber is generated by utilizing a structure that the arc magnetizer is matched with the permanent magnet and the static contact arc striking part, and the arc voltage is obviously improved; on the premise that the size of the switch unit is not changed, the voltage grade of breaking arc of the switch unit is improved.

This utility model relates to the field of arc extinguishing devices and discloses a high-voltage narrow-slit pressurized arc extinguishing device, including an arc extinguishing shell, a mounting frame, an arc extinguishing assembly, and two first gas generating components. The bottom of the arc extinguishing shell is provided with a gas generating port, and the two first gas generating components are symmetrically arranged on both sides of the gas generating port. When the circuit breaker is tripped, the moving contact swings, causing the electric arc on it to enter between the two first gas generating components through the gas generating port. The arc extinguishing assembly is disposed on the mounting frame and is used to extinguish the electric arc between the two first gas generating components. A narrow slit is formed between the two first gas generating components, which makes the arc heat more concentrated, increases the arc voltage, accelerates the pyrolysis rate of the gas generating material, and generates more arc extinguishing gas per unit time, thereby improving the arc extinguishing effect.

An arc extinguishing device of a switch belongs to the technical field of low-voltage apparatuses. Comprising a plurality of arc extinguishing grid sheets which are arranged at intervals, an outlet of the arc extinguishing device is provided with an exhaust channel, the exhaust channel is communicated in the arrangement direction of the plurality of arc extinguishing grid sheets, the exhaust channel penetrates through at least one of the plurality of arc extinguishing grid sheets, and in the penetrated arc extinguishing grid sheets, the exhaust channel is communicated with the plurality of arc extinguishing grid sheets. And at least one arc extinguishing grid plate divides the exhaust channel into at least three parallel exhaust channels in the width direction of the arc extinguishing grid plate. The arc extinguishing device has the advantages that in the whole gas discharge channel, at least one arc extinguishing grid plate divides the gas discharge channel into a plurality of parallel narrow slit channels which are mutually separated in the width direction of the arc extinguishing grid plate, when high-temperature gas containing metal particles forms an arc in the channel, due to the extrusion effect of the narrow slit channels, the arc voltage is increased, and meanwhile, the arc extinguishing effect of the arc extinguishing grid plate is improved. And smooth discharge of the arc gas from the exhaust channel is ensured.

The utility model provides a circuit breaker with a separator plate structure, comprising an arc extinguish chamber body which comprises first arc extinguish cavities arranged in the arc extinguish chamber body at intervals; the arc extinguishing assembly comprises a first arc extinguishing piece cluster, and the first arc extinguishing piece cluster comprises a first vertical grid piece group which is arranged at the inner end of the first arc extinguishing cavity at an interval along the length direction of the arc extinguishing chamber body, and a first inclined grid piece group and a second inclined grid piece group which are arranged at two sides of the first arc extinguishing cavity at an interval along the width direction of the arc extinguishing chamber body; the first vertical grid plate group, the first inclined grid plate group and the second inclined grid plate group are arranged in a U shape in the first arc extinguishing cavity, the gas generation cover is installed on the opening side of the arc extinguishing chamber body and comprises a first extension assembly, and the first extension assembly comprises a first gas generation part and a second gas generation part which are oppositely arranged; and a first channel for gas to pass through is formed between the first gas generation part and the second gas generation part, so that the circuit breaker can overcome the defect that in the prior art, after being generated, electric arcs are in an irregular moving state, and part of the electric arcs cannot move in the arrangement direction of the arc extinguishing grid plates.

The utility model discloses a direct-current isolating switch, which comprises a shell, an operating mechanism, a contact system and an arc extinguish chamber, the contact system comprises a moving contact and a static contact. A blocking structure matched with an inner cavity of the bottom plate is arranged on the moving contact, the blocking structure and the bottom plate are staggered in the opening process of the moving contact, high-pressure gas is prevented from being filled in the direction opposite to the arc extinguish chamber when current is broken, and the formed blocking structure is more beneficial to air blowing, guarantees air pressure in the arc extinguish chamber and facilitates improvement of arc voltage. The arc extinguishing effect is improved; by increasing the opening distance, the electric arc is lengthened when the current is broken, the electric arc voltage is increased, and arc extinguishing is facilitated; the upper end space of the outgoing line bar and the accessory installation space are not occupied; in addition, due to the design of the insulating plate structure, the switch provided by the utility model has more excellent insulation, and is suitable for the requirement of DC 2000V high voltage.

The arc extinguish chamber comprises two flash barriers, a plurality of arc extinguish grid sheets arranged between the two flash barriers in a spaced and stacked mode and a reflection chamber arranged on the arc inlet side of the arc extinguish chamber, an arc extinguish groove formed in the arc inlet side of each arc extinguish grid sheet divides the arc inlet side of each arc extinguish grid sheet into two plug pins, and the reflection chamber is provided with an exhaust channel; the pins of the arc extinguishing grid sheets are inserted in the exhaust channel, the side surface of the arc extinguishing chamber provided with the flash barrier is provided with an exhaust hole, and the exhaust channel is communicated with the outside of the arc extinguishing chamber through the exhaust hole. The circuit breaker comprises the arc extinguish chamber. According to the arc extinguish chamber and the circuit breaker of the utility model, on the basis that the original arc extinguish chamber exhausts air through the exhaust side, high-temperature gas at the exhaust side enters the exhaust channel along the pins of the arc extinguish grid sheets through the exhaust channel arranged in the reflection chamber at the arc inlet side of the arc extinguish chamber and then is exhausted out of the arc extinguish chamber through the exhaust hole; the effect of cooling high-temperature free gas is achieved, the medium recovery strength between the conductors is improved, the back breakdown phenomenon is reduced, and rapid breaking of an arc is facilitated.

The invention discloses a contact mechanism and a vacuum circuit breaker, and relates to the technical field of circuit breakers. The contact mechanism comprises a moving contact, a static contact and a transverse magnetic field structure. The moving contact comprises a first contact part, the static contact comprises a second contact part, the arc extinguishing structure is arranged on the first contact part and / or the second contact part, the transverse magnetic field structure is used for generating a transverse magnetic field, so that the moving contact and the static contact form a rotary switching arc during opening and closing, and the arc extinguishing structure is used for extinguishing the switching arc. The contact mechanism provided by the invention can effectively improve the arc voltage of the switching arc, improve the arc extinguishing efficiency, enhance the arc extinguishing effect, improve the safety, meet the direct current breaking requirement and expand the application scene.

The application relates to a grounding switch with multiple short-circuit current switching capacity, and belongs to the technical field of gas insulated switch cabinets. The grounding switch comprises a grounding contact and a bus contact; the grounding contact comprises a grounding arc contact, a grounding contact compartment plate, a grounding contact passage hole and a grounding contact support plate; the grounding arc contact is separated into independent compartments by the grounding contact compartment plate; the bus contact comprises a bus conductive contact, a bus arc contact and a bus contact arm; the grounding contact and the bus contact are both moving contacts; when the grounding arc contact and the bus arc contact are close and the distance reaches a first breakdown distance, a discharge arc is generated, the discharge arc occurs between the grounding arc contact and the bus arc contact; the bus arc contact completely enters an independent compartment of the grounding arc contact, and the grounding conductive contact and the bus conductive contact are effectively connected. The grounding switch improves the short-circuit current switching capacity of the grounding switch.

The present invention relates to a C4F7N environmentally friendly gas ring main unit, comprising a gas box, the gas box is filled with a mixed gas of C4F7N and CO2, a busbar insulator, a main busbar, a load switch, a branch busbar and an outgoing line insulator are installed in the gas box, the busbar insulators are two, the two busbar insulators are respectively installed on two opposite inner walls of the gas box, the two busbar insulators are connected through the main busbar, the main busbar is connected to the load switch, the load switch is connected to a plurality of branch busbars, and each branch busbar is connected to an outgoing line insulator. The C4F7N environmentally friendly gas ring main unit is mainly matched with the insulation and breaking performance of the C4F7N and CO2 mixed gas, and the structural design and arc extinguishing grid load switch design are performed to meet the safe operation of the switchgear.