Circuit breaker unit

FIELD: electricity.

SUBSTANCE: invention relates to a normally closed power circuit breaker unit. Power circuit breaker unit has first and second arcing contact pieces (4, 5). Between arc-quenching contact parts (4, 5) there is a solution (6) contacts. Switch gas channel of circuit breaker unit joins contact gap (6) to surrounding area of circuit breaker unit for cooling a switch gas from contact gap (6). Several barriers (21a, 21b, 21c, 21d, 21e) that increase a flow resistance are arranged successively, spaced from one another, in switch gas channel. At least one of barriers (21a, 21b, 21c, 21d, 21e) is arranged between first pipe section (12), which is surrounded by second pipe section (14), and second pipe section (14).

EFFECT: efficient cooling of switch gas with a compact design.

7 cl, 1 dwg

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: invention relates to pole part of switching device with vacuum interrupter chamber enclosed into insulation material and containing fixed and moving contacts. Herewith, cast insulating housing is open in lower part in the area of moving contact or drive rod actuating moving contact. In the area of moving contact or at the place where it is coupled with drive rod (3), at least one vent hole (7) is made which passes through the wall of insulation (2), boundary zone between insulation and electric coupling part or through electric coupling part (4) of moving contact. The vent hole (7) is formed in coupling part (4) by means of at least one through bleed screw (8) with the help of which external contact is fixed in coupling part, at the same time, a hole accommodating at least one such bleed screw is through and connects external and internal areas of pole part to be ventilated.

EFFECT: reducing pole parts heating during operation and obtaining higher allowable nominal current load.

5 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: switch (20) contains extended inner conductor (21) and outer conductor (22) wrapping inner conductor (21) as shrouding. To dissipate heat losses of inner conductor (21) the switch is fitted with at least one heat pipe (1) which goes from inner conductor (21) to outer conductor (22) and has isolating hollow body (5) creating isolating gap (7). Evaporation and condensation of working medium (2) in pipe (1) takes place at different electric potential. In this process, evaporations and condensations are separated by flexibly deformed section (9) of the pipe (1) permitting avoidance of mechanical loads. The pipe (1) may pass in carrying isolator (24) which supports inner conductor (21).

EFFECT: cooling efficiency improvement and service simplification of the switch.

18 cl, 5 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to a casing made from electric insulating material (1) with a fastening section (2) meant for installation of an arc-extinguishing chamber, where the fastening section has an inlet connecting piece (5), and an actuating section (3), which adjoins the fastening section lengthwise, where the actuating section has an actuating hole for moving the actuator into the arc-extinguishing chamber, and has an outlet connecting piece (8). In the casing there is ventilation shaft (12), which surrounds the fastening section (2) in form of a collar, where the ventilation shaft is linked to the inside of the actuating section (3).

EFFECT: high cooling power, also sufficient for large currents.

11 cl, 3 dwg

FIELD: electrical engineering.

SUBSTANCE: proposed electric switching apparatus is characterized in that arc-control gas flow is set up in the course of its OFF-operation and has cooling device with solid wall and through holes, at least one of them being closed by means of sleeve fittings connected to cooling device through detachable joint.

EFFECT: facilitated coordination of device cooling capacity.

8 cl, 1 dwg

FIELD: personal use articles.

SUBSTANCE: portable communication device is proposed, which comprises a mechanical selector (2a, 2b) and a key (3) to activate the mechanical selector (2a, 2b). The key contains the activation surface (30), which protrudes from the outer body through a hole (10), and the mechanical selector, which may be activated by rotation of the key (3) around the axis (XX'), which is substantially perpendicular to the specified activation surface. The key is made of plastic and contains an outlet slot (31a, 31b) in its thickness and at the back of the specified activation surface, which stretches in parallel to the specified activation surface with the possibility to absorb shock and to prevent damage of the mechanical selector.

EFFECT: increased protection of the mechanical selector against damages during shock.

6 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention is intended for fast connection and disconnection of current-conducting elements in sealed switchgear (SSG) to the grounding circuit. The grounding switch for sealed switchgear contains a metal container filled with electroinsulating gas with a current lead inside the container and a fixed contact with a metal screen mounted at the current lead, a hollow movable contact with a piston is installed coaxially to the screen and its piston may move in a cylindrical container thus forming over-piston and below-piston cavities. The movable contact has openings at the piston base, which are coupled to the over-piston cavity within the whole pathway of the movable contact. The blower body is equipped with a screen and a fixed cylindrical insert mounted at the screen protruding over its surface. The fixed contact has a metal opposite electrode of arc-resistant material placed in the contact centre and the movable contact has a metal nozzle placed in its but end part that is covered by the opposite electrode in switched on position.

EFFECT: reducing arcing time and reducing wear of the contact system.

2 dwg

FIELD: electricity.

SUBSTANCE: invention is attributed to the field of high-voltage engineering in particular to heavy current switches equipment in electric power distribution systems. Method for exhaust gas cooling in electric switch, in particular in generating-station circuit breaker (1), which includes chamber which is surrounded by switch chamber casing. Injector element (10) creates gas jets (12) in exhaust area (7), directs them to reflecting wall (14, 140) and transform them into swirls. Reflecting wall (14, 140) is component of switch chamber casing (3) and has high thermal capacity and/or high thermal conductivity. Switch has the first and the second contact. In exhaust area of the first and the second contact there is element (10) with outlets (11) for exhaust gas discharge. These outlets represents injectors. Interior space (7a) contains at least one more element with additional outlets for creation of additional gas jets. Switch chamber casing (3) represents sealed shell for exhaust gas.

EFFECT: achievement of highly efficient cooling of exhaust gas in swirls (13) of exhaust gas near reflecting wall (14, 140), providing protection of switch chamber casing (13) against hot gases; improvement of exhaust gas cooling and enhancement of switching ability.

25 cl, 8 dwg

Force switch // 2293393

FIELD: electric engineering.

SUBSTANCE: force switch contains contact part moveable in axial direction and with flow moving in case of commutation in axial direction, which flow is coaxially enveloped by flow guiding device, which in side surface has at least one outlet aperture for deviation of at least part of arc-suppressing gas flow in direction of outlet, while direction of outlet is directed tangentially mainly perpendicularly to axial direction.

EFFECT: increased arc suppression efficiency due to optimized deflection of arc-suppressing gas flow.

7 cl, 7 dwg

The invention relates to the field of electrical engineering, in particular to high-speed linear earthing switches high-voltage switchgear intended for grounding high-voltage transmission line

The invention relates to a gas, particularly gas, electric switching devices to extinguish the arc using the arc energy to enhance the flow of arc gas and autotrazione razmykaetsya contacts

The invention relates to a gas, in particular gas-insulated, high-voltage switches, in which the gas flow, providing extinguishing of the arc is created simultaneously through the circuit and automatic compression gas compression piston device in the shutdown process

The invention relates to a gas, particularly gas, electric switches, in which the gas flow, providing the extinguishing of the arc, is created through a circuit and automatic compression gas compression piston device in the shutdown process

FIELD: power industry.

SUBSTANCE: system of a switching unit has insulating nozzle (7) enveloping at least partially contact clearance (2). Nozzle passage (8) of insulating nozzle (7) enters with its outlet hole (13) the gas heating volume (10). Inside gas heating volume (10) there located is deflector element (15a, 15b, 15c) that restricts deflector passage (14a, 14b, 14c) having section (16) that is restricted with lateral surface having a shape of flattened cone. Section (16) of the deflector passage has a cross section diverging in the switching gas outlet direction to gas heating volume (10) and forms a transition between a cylindrical lateral surface and a converged section.

EFFECT: possibility of effective filling and emptying of a gas heating volume with switching gas at short time intervals.

15 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention is related to a system of switching device with a contact gap (6), which is surrounded by an insulating nozzle (7) at least partially. The insulating nozzle (7) has a nozzle passage (8) included into the gas heating volume (10). Inside of the gas heating element (10) there is a deflector element (14a, 14b), which has support inside the defector channel (15a, 15b).

EFFECT: design of switching device system which at varied shape of the deflector element ensures a low failure probability due to the targeted mixing of elegas and cold insulating gas in the gas heating volume.

17 cl, 2 dwg

Sf6 circuit breaker // 2503078

FIELD: electricity.

SUBSTANCE: SF6 circuit breaker comprises an arc-quenching device made of two coaxially arranged contacts, at least one of which is mobile, and of an electric insulating arc-quenching nozzle arranged coaxially around contacts and made of separate elements made of different materials. The arc-quenching device of the circuit breaker additionally comprises a support tubular element fixed on one of the contacts. The electric insulating arc-quenching nozzle and a support tubular element represent a single device made of separate elements of an arc-quenching nozzle fixed on the inner surface of the support tubular element.

EFFECT: increased switching resource and switching capacity of a circuit breaker, higher strength and reliability in operation of arc quenching nozzles, simplified technology of their manufacturing.

2 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: breaker system (1) has switching pipe (3) with outlet opening (5) for switching gases. Switching pipe (3) in the zone of outlet opening (5) for switching gases is connected to connecting section (9) of drive rod (10). Connecting section (9) is protected by means of screen (15) against switching gases leaving outlet opening (5).

EFFECT: providing the possibility of embossed configuration of the connecting section of the drive rod and performance of complicated movement of the switching pipe at reduction of the power of the drive device.

9 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: breaker unit of electric switching device has a body (7) to direct a flow. Emanating gases are directed by means of the body (7) for flow direction. The body (7) for flow direction is arranged at least from the first and second element (7a, 7b), besides, between both elements (7a, 7b) there is a coupling gap. The coupling gap has a section formed to create a labyrinth structure in a complementary manner by form between both elements (7a, 7b). Besides the coupling gap relative to the section plane goes through at least double change of direction by at least 180. The first and second elements (7a, 7b) are axisymmetric bodies.

EFFECT: provision of insensitivity relative to hot gases.

8 cl, 2 dwg

The invention relates to a hinged connection, intended for installation on the robot arm, as well as for use with clip spot welding machines or other devices, for example, with spectacular device

FIELD: electricity.

SUBSTANCE: breaker unit of electric switching device has a body (7) to direct a flow. Emanating gases are directed by means of the body (7) for flow direction. The body (7) for flow direction is arranged at least from the first and second element (7a, 7b), besides, between both elements (7a, 7b) there is a coupling gap. The coupling gap has a section formed to create a labyrinth structure in a complementary manner by form between both elements (7a, 7b). Besides the coupling gap relative to the section plane goes through at least double change of direction by at least 180. The first and second elements (7a, 7b) are axisymmetric bodies.

EFFECT: provision of insensitivity relative to hot gases.

8 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: breaker system (1) has switching pipe (3) with outlet opening (5) for switching gases. Switching pipe (3) in the zone of outlet opening (5) for switching gases is connected to connecting section (9) of drive rod (10). Connecting section (9) is protected by means of screen (15) against switching gases leaving outlet opening (5).

EFFECT: providing the possibility of embossed configuration of the connecting section of the drive rod and performance of complicated movement of the switching pipe at reduction of the power of the drive device.

9 cl, 3 dwg

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