3results about How to "Reduce vibration risk" patented technology

This utility model discloses a high-parameter steam flow guiding structure for a small steam turbine in a million-kilowatt double reheat unit, relating to the field of reheat engine technology. It includes a mounting frame, to which a steam turbine is fixedly connected. A multi-stage flow guiding assembly is provided on the inner wall of the steam delivery pipe of the steam turbine. The multi-stage flow guiding assembly includes a primary plate disposed on the inner wall of the steam delivery pipe. Multiple primary flow guiding holes are opened at the upper end of the primary plate. Through the multi-stage flow guiding assembly, the steam inside the steam delivery pipe of the steam turbine passes sequentially through the primary plate, secondary plate, and tertiary plate. The primary plate initially disperses the high-speed steam, the secondary plate adjusts the flow velocity distribution, and the tertiary plate further refines the steam flow. Utilizing the resistance characteristics of the primary, secondary, and tertiary plates to the steam, it facilitates forced homogenization of the airflow, resulting in uniform and stable steam pressure and flow velocity entering the steam turbine, reducing the risk of rotor vibration.

The utility model provides a kind of wound pipe heat exchanger, comprising: vertically arranged shell side cylinder, the central part of the first end of which is equipped with shell side connector;Center cylinder, which is arranged in the shell side cylinder along the axial direction;Multiple heat exchange tubes, which are arranged in the shell side cylinder along the axial direction and are spirally wound on the outer periphery of the center cylinder from inside to outside;Tube sheet and tube box, and the tube box is equipped with tube side connector;The tube sheet is transversely arranged in the shell side cylinder and the outer periphery of the center cylinder, and is relatively close to the first end of the shell side cylinder, and the tube sheet has a first surface facing the first end of the shell side cylinder and a second surface opposite to the first surface, and the second surface is arranged corresponding to the axial end of each heat exchange tube to support the end of each heat exchange tube;At least part of the tube box is located in the outer periphery of the center cylinder in the shell side cylinder, and is arranged on the side of the first surface of the tube sheet and is connected with the end of the heat exchange tube supported on the tube sheet;The tube side connector is located on the first end of the shell side cylinder, avoiding the shell side connector.

This utility model discloses a foundation pit monitoring device for foundation pit construction, relating to the field of building construction technology. The device includes a vertical insertion rod with a T-slot at its top. A T-shaped collar is movably inserted into the inner wall of the T-slot. A horizontal connecting rod is fixedly connected to one end of the T-shaped collar, and a liquid level monitoring sensor is fixedly connected to the end of the horizontal connecting rod away from the T-shaped collar. This utility model achieves locking through the sliding connection between the T-shaped collar and the T-shaped positioning block, and the right-angle insertion between the vertical insertion rod and the vertical slot, both using tolerance fits. A single person can complete the assembly of the device within minutes, improving efficiency by 90% compared to traditional bolt connections, making it particularly suitable for rapid deployment in emergency monitoring scenarios.