The invention relates to an adjustable water inlet device for a
hydropower station, which is characterized in that the adjustable water inlet device for the
hydropower station comprises a spherical strainer, a trumpet water inlet section, a control
gate valve, a floating box
assembly section, an adjusting section and an
elbow pipe section, wherein a floating box is connected to the floating box
assembly section; lower parts of the adjusting section and the
elbow pipe section are provided with U-shaped floating blocks of a floating pipeline respectively; both sides of the floating box are connected to a
mooring line device through steel cables respectively; the adjusting section consists of an upstream spherical
universal joint, a downstream spherical
universal joint and a connecting
pipe which connects the upstream spherical
universal joint and the downstream spherical universal joint; and an outlet of the
elbow pipe section is connected with a fixed water conduit of a river
bank. The adjustable water inlet device for the
hydropower station does not require a matched dam project to maintain the
underwater embedded depth of a water inlet, does not obstruct a river channel, is favorable for maintaining natural
ecology of the river channel, and is widely suitable for the water inlet of a small diversion type hydropower station.