MANHOLE IN HYDRAULIC POWER PLANT BUILDING

摘要

The invention relates to hydraulic engineering, in particular, to devices ensuring the penetration of maintenance personnel into the cavity of a hydroelectric power station, which during its operation are filled with water. The purpose of the invention is to improve operational reliability by reducing the likelihood of water splashing from the barrel to the room. In the floor of room 1, the barrel 2 is provided with a chamber 3, in which a float 6 is installed, connected by levers 7 to the shutter doors 5. The barrel 2 is connected to the lower part of the cavity, which is filled with water during operation. The barrel 2 below chamber 3 is made in the form of a funnel 9 and a confuser 10. The largest diameter of the funnel 9 and confuser 10 is larger than the diameter of chamber 3. In the case of abrupt pressure of water in the cavity, for example, in the suction pipe of a hydroelectric power station, the water rushes upwards and can to get into the room 1. Raising upward, the flow of water by the confuser 10 twists, preventing water from splashing into the room 1. After further raising the water level, the float 6 rises and by means of the levers 7 closes the shutter flaps 5. I zp f-ly, 3 ill. (L with