6results about How to "Improve arc extinguishing effect" patented technology

The utility model relates to the field of switching devices, in particular to a switching unit of a switching device and the switching device, the switching unit comprises a movable contact part, a static contact part and an arc extinguishing assembly, the movable contact part is arranged on an action execution assembly, the arc extinguishing assembly is linked with the action execution assembly, and the arc extinguishing assembly is linked with the action execution assembly along with closing or breaking of the movable contact part and the static contact part. The arc isolating part of the arc extinguishing assembly is selectively positioned at the avoiding position or the arc extinguishing position, so that the arc isolating part forms physical isolation of the movable contact part and the static contact part at the arc extinguishing position to extinguish the arc; the arc extinguishing assembly and the action execution assembly form linkage through a tooth-shaped transmission mechanism. The switching device is provided with the switching unit. The arc extinguishing assembly and the action execution assembly are linked to enable the arc isolating part to move along with the movement of the action execution assembly, effective arc extinguishing can be realized, timely abdication can be realized to facilitate reliable closing of the movable contact part and the static contact part, the tooth-shaped transmission mechanism works reliably, the working reliability of the arc extinguishing assembly is improved, and the service life of the arc extinguishing assembly is prolonged. And the switch unit is ensured to have a good arc extinguishing effect.

The present invention relates to an insulating gas for electrical insulation or arc extinguishing of an electrical device and an electrical device for electrical insulation using the insulating gas. The insulating gas capable of replacing the SF6 gas in the invention is a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas according to the present invention has the characteristics of low boiling point, high insulating strength, low toxicity, and low global warming index (GWP1 or less), thereby being able to replace SF6, and reducing the global warming index while maintaining high insulating ability and arc extinguishing ability, thereby reducing greenhouse gases.

The invention relates to a contact structure of a longitudinal magnetic circuit breaker, which can solve the problem that the contact structure of the longitudinal magnetic circuit breaker in the related technology is difficult to give consideration to good arc extinguishing effect and mechanical strength, the contact structure of the longitudinal magnetic circuit breaker comprises a contact cup, a screw mechanism and a contact blade, the contact cup is provided with an accommodating cavity and a cup opening, the screw mechanism is embedded in the accommodating cavity, and the cup opening is provided with an opening. The spiral mechanism is provided with at least two spiral grooves, the spiral grooves are spirally arranged around the axial direction of the contact cup, at least part of the spiral mechanism protrudes out of the cup opening in the axial direction of the contact cup, the contact piece abuts against the spiral mechanism in the axial direction of the contact cup, and the contact piece is configured to be capable of compressing the spiral mechanism in the axial direction of the contact cup till the spiral mechanism abuts against the cup opening for limiting.

This disclosure relates to DC protectors and electric vehicles. The DC protector includes a housing, a moving contact, a stationary contact, and a magnet. The moving contact, stationary contact, and magnet are disposed within the housing. The magnet is arranged such that the magnetic field lines generated by the magnet between the moving and stationary contacts have a direction different from the direction of movement of the moving contact. The magnet, moving contact, and stationary contact are positioned in the same chamber, and the magnet directly faces the moving and stationary contacts. Electric vehicles include the aforementioned DC protector. The DC protector has a simple structure, low cost, high reliability, and long service life.

The application discloses a kind of intelligent magnetic control low-voltage switch device, including magnetic control primary module and blade type secondary module;The magnetic control primary module includes first bottom shell, first top shell, plastic shell baffle, bottom plate, the first bottom shell, first top shell, plastic shell baffle, bottom plate form entire shell frame;The application can realize automatic opening and closing under the size requirement of original manual plastic shell circuit breaker, directly replace the existing old switch of station area, the opening and closing speed is greatly changed fast, improve mechanical performance, effectively increase the space capacity of secondary control module, realize high intelligence, one, secondary integral modular design, secondary module heat insulation design, secondary control module can be plugged, can realize not power replacement secondary module, improve the operation and maintenance ability of product, the service life of primary and secondary module is same period, greatly improve the service life of device, secondary vulnerable components can be plugged alone, improve the flexibility of device, with higher scientificity, logic.

The invention discloses a high-voltage disconnecting link with an arc extinguishing function and an operation method thereof. The high-voltage disconnecting link comprises a mounting seat, and two supporting insulators are arranged on the mounting seat at intervals; the isolation switch comprises a blade, a first static contact and a second static contact, the first static contact and the second static contact are arranged on the two supporting insulators respectively, the blade is rotationally connected with the first static contact, and the blade can abut against or be spaced from the second static contact; the arc extinguishing device comprises a gas storage tank, a connecting pipe and nozzles, sulfur hexafluoride gas is stored in the gas storage tank, and the nozzles are arranged on one side of the isolation switch at intervals through the connecting pipe. According to the high-voltage disconnecting link with the arc extinguishing function, through the arrangement of the arc extinguishing device, when the blade and the second static contact are disconnected at an interval, sulfur hexafluoride gas in the gas storage tank can be sprayed out of the spray head through the connecting pipe so as to perform arc extinguishing treatment on an electric arc between the blade and the second static contact, the sulfur hexafluoride gas is good in insulativity and arc extinguishing effect, and the high-voltage disconnecting link with the arc extinguishing function is high in practicability. And the use safety and reliability of the isolation switch and the circuit are improved.