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US 5,113,056 AGranted
Stored-spring-energy actuator mechanism for a high-voltage circuit breaker
AssigneeSprecher Energie AG
InventorMax Kuhn
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AssigneeSprecher Energie AG
InventorMax Kuhn
Estimating the term…
The stored-spring-energy actuator mechanism (210) for the high-voltage circuit breaker (218) has a spiral spring (216) which can be loaded by means of the loading device (212). The high-voltage circuit breaker (218) can be switched on once and off once with the energy stored in the loaded spiral spring (216). The energy stored in the fluid-pressure accumulator (258) is sufficiently great to charge the spiral spring (216) at least once. The working-stroke movement of the piston rod (242) in arrow direction (A) is transformed via the gear segment (236) into a rotation through 360.degree. of the gear (232) meshing with this gear segment (236). The spiral spring (216) is thereby loaded via the loading lever (230). When the three-way valve (256) is changed over, the cylinder-piston unit (214) is hydraulically connected to the low-pressure reservoir (266), as a result of which the gear segment (236) is pivoted back under the force of the restoring spring (250), and the piston-cylinder unit (214) is moved back into the inoperative position. Unloading of the spiral spring (216) is prevented by the backstop (232), and the coupling between the loading lever (230) and the gear (232) is neutralized by a free-wheel. It is possible to drive the cylinder-piston unit (214) with thin-bodied hydraulic oil, which permits reliable working in a wide temperature range.
A stored-spring-energy actuator mechanism for a high-voltage circuit breaker, comprising a spring-energy accumulator (216) which can be charged by means of a loading device (212) having a fluid-drive element (214), means adapted to connect said spring-energy accumulator to said high voltage circuit breaker, the energy of the spring-energy accumulator (216) being sufficient for switching the high-voltage circuit breaker on and off once, and a controlled valve arrangement (256) for connecting the fluid-drive element (214) to a pressurized fluid-pressure accumulator (258) whose storable energy content corresponds at least to the stored energy of the spring-energy accumulator (216), wherein the fluid-drive element has a cylinder-piston unit (214) which performs a single working stroke for charging the spring-energy accumulator (216).
The stored-spring-energy actuator mechanism for a high-voltage circuit breaker, comprising a spring-energy accumulator (216) which can be charged by means of a loading device (212) having a fluid-drive element (214), the energy of the spring-energy accumulator (216) being sufficient for switching the high-voltage circuit breaker on and off once, and a controlled valve arrangement (256) for connecting the fluid-drive element (214) to a fluid-pressure accumulator (258) whose storable energy content corresponds at least to the stored energy of the spring-energy accumulator (216), wherein the fluid-drive element has a cylinder-piston unit (214) which performs a single working stroke for charging the spring-energy accumulator (216) wherein the spring-energy accumulator has a spiral spring (216), one end of which is connected to a rotatable and lockable shaft (224), which can be brought to act on a movable switch contact (220) of the high-voltage circuit breaker (218), and the other end of which is connected to a loading lever (230) mounted on the same axis as the shaft (224), and the loading lever (230), for loading the spiral spring (216), can be pivoted by means of the cylinder-piston unit (214).
Dependencies are inferred from the claim text.