A switch device for the inlet door of the draft pipe of a tubular turbine

Abstract

The invention discloses a through-flow turbine draft tube man access door opening-closing device, which comprises a lifting device, a steel wire rope, a guiding pulley and a man access door cover operation plate arranged on a turbine draft tube man access door. The guiding pulley is fixed onto an outer wall of the lower part of a draft tube through a pin shaft and a support plate, and is located on the opposite side of a hinge of a man access door cover; an installation position of the guiding pulley is higher than a position of the man access door cover operation plate; the lifting device isfixed onto a draft tube man access gallery wall and is located under the guiding pulley; one end of the steel wire rope is connected with the lifting device; the other end of the steel wire rope bypasses the guiding pulley and is detachably connected with the man access door cover operation plate through a safe connecting assembly; and when the turbine draft tube man access door is closed, the turbine draft tube man access door is connected with the draft tube through a man access door cover bolt-connection bolt. According to the through-flow turbine draft tube man access door opening-closingdevice provided by the invention, the manual operation can be reduced, the opening-closing difficulty of the draft tube man access door is greatly reduced, the safety in opening and closing the drafttube man access door is greatly improved, and the personal safety of an operator is ensured.

Description

technical field [0001] The invention belongs to the technical field of hydroelectric power generation equipment, and in particular relates to a switch device for a draft tube inlet door of a tubular water turbine. Background technique [0002] There is no special switch device for the entrance door of the draft tube of the existing tubular turbine, and the opening and closing of the entrance door is realized by directly operating the entrance door cover manually. Since the tubular unit is arranged on a horizontal shaft, the inlet door of the draft pipe of the turbine is arranged directly below the draft pipe, and the weight of the inlet door cover is heavy, which makes it difficult to directly open and close the inlet door, and there is a certain risk. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned problems and provide a tubular turbine draft tube that can greatly reduce the difficulty of opening and closing the exist...

AI Technical Summary

Problems solved by technology

[0002] There is no special switch device for the entrance door of the draft tube of the existing tubular turbine, and the opening and closing of the entrance door is realized by directly operating the entrance door cover manually.

Since the tubular unit is arranged on a horizontal shaft, the inlet door of the draft pipe of the turbine is arranged directly below the draft pipe, and the weight of the inlet door cover is relatively heavy, which makes it difficult to directly open and close the inlet door, and there is a certain risk

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