JPS6168443U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention, Figs. 2 and 3 are sectional views showing different examples of insulated pipe mounting structures, and Fig. 4 shows a conventional gas circuit breaker. FIG. 5 is a cross-sectional view showing the circuit breaker of FIG. 4 in an open state. DESCRIPTION OF SYMBOLS 1... Circuit breaker container, 2... Intermediate electrode, 3... Contact stand, 301... Pipe fitting recess, 302... Ventilation hole, 5... Movable contact rod, 5a... Movable arc contact, 7... Puff cylinder, 8... Piston, 8a... Movable main contact, 11... Fixed arc contact, 12... Fixed main contact, 13... Nozzle, 20... Circuit breaker support plate, 21... Operating mechanism storage case, 22... Main operating shaft, 23... Crank lever,
24...Link, 25...3-phase connection lever, 30...Adsorbent case, 40...Insulating pipe.

Claims (1)

[Claims for Utility Model Registration] (1) A circuit breaker support plate having a through hole for mounting the circuit breaker, and an insulator fixed to the circuit breaker support plate with the upper end opening aligned with the through hole. A circuit breaker container made of a material, a movable contact rod slidably provided through a contact stand disposed in the circuit breaker case, and a movable contact rod provided at a position below the contact stand in the circuit breaker case. a fixed contact arranged therein; an operating mechanism storage case attached to the circuit breaker support plate so as to cover the upper end opening of the circuit breaker container; and a circuit breaker operating mechanism disposed within the operating mechanism storage case. , an insulated operating rod having one end connected to the upper end of the movable contact rod and the other end connected to the circuit breaker operating mechanism; and an insulated operating rod that extends through the interior of the movable contact rod and has an upper end below the insulated operating rod. a gas passage opening into a space above the contact base at a position, and an adsorbent container containing an adsorbent and disposed within the operating mechanism storage case; In a gas circuit breaker in which a case is filled with an arc-extinguishing insulating gas, the movable contact rod is formed in a cylindrical shape and has an open upper end, and surrounds the vicinity of the upper end of the movable contact rod and the insulated operating rod. The contact stand is provided with a gas passage located outside the insulated pipe to communicate the space above and below the contact stand, and the upper end of the insulated pipe is connected to the circuit breaker. A gas circuit breaker, characterized in that it opens into the operating mechanism storage case at a position above the top surface of the support plate. (2) The insulating pipe has a male threaded part on the outer periphery of its lower end, and the male threaded part is screwed into a female threaded part provided on the contact base, so that the insulating pipe is fixed to the contact base. A gas circuit breaker according to claim 1, which is a utility model. (3) The contact base has a pipe fitting recess into which the insulated pipe is fitted, and the lower end of the insulated pipe is fitted into the pipe fitting recess and passes through the peripheral wall of the lower end of the insulated pipe. The gas circuit breaker according to claim 1, wherein the gas circuit breaker is fixed to the contact base by a pin inserted into the inner periphery of the pipe fitting recess.