Abstract: An on-line measurement-error correction device and method for the inner profile of a special-shaped shell, including a fixing device. A vertical moving device is fixed at the top of the fixing device and connected with a horizontal moving device connected with a distance monitoring device, which is movable vertically and horizontally under the drive of the vertical and horizontal moving devices. The distance monitoring device includes a displacement monitoring element fixedly arranged on a fixing support hinged with an electric push rod configured to displace to drive the displacement monitoring element to deflect so as to change a monitoring direction. The displacement monitoring element is driven to deflect by the electric push rod of the distance monitoring device to change a monitoring direction, and a distance between each longitudinal section surface point on the inner surface of the special-shaped shell and the displacement monitoring element can be gradually measured.

Abstract: A water environment temperature measurement tool includes measurement boxes and a counterweight box; a plurality of groups of the measurement boxes are provided; the counterweight box is movably connected with a group of measurement boxes; and each measurement box is provided with a temperature measurement instrument inside. The water environment temperature measurement tool further comprises: control mechanisms, each comprising a water inlet pipe, a water retaining member, an elastic member, a control assembly, a rotating seat, a rotating shaft, a second screw rod, a control seat and a rotary assembly. In the water environment temperature measurement tool of the present invention, the control mechanisms can achieve extraction and temperature measurement of water at different water body depths by cooperating with the measurement boxes and the temperature measurement instruments.

Abstract: Water conservancy construction sewage treatment mechanism, including a support mounting cylinder, where a variable-diameter sedimentation cylinder is arranged at one end of the support mounting cylinder, one half of the cylinder wall of the support mounting cylinder is a thin wall and the other half is a thick wall, and the thin wall and the thick wall are disposed oppositely. The water conservancy construction sewage treatment mechanism also includes: a variable-diameter diversion cylinder, which is arranged on the thin wall at the other end of the support mounting cylinder; several displacement diversion modules, which are arranged on the thick wall of the support mounting cylinder and include guide displacement structures and combined diversion structures; and a magnetic attraction displacement adjusting structure, which is arranged on the outer side of the thick wall of the support mounting cylinder and is matched with the guide displacement structures and the combined diversion structures.