3results about How to "High precision adjustment" patented technology

The present invention provides a manually operated diaphragm valve that maintains compactness through a simple construction while simultaneously allowing for setting the valve body's opening and closing range. This design is unaffected by individual differences in the valve's internal shape, ensuring sufficient flow rate when fully open, and also allowing for arbitrary adjustment of the fully open flow rate. The valve body 1 includes a valve body 12 assembled inside a main body 10 and a main shaft 13 threaded into the main body 10 in a lifting motion, separating the valve body 12 from the valve seat 14. A handle 2 is mounted above the valve body 1 for manually rotating the main shaft 13. Near the upper part of the valve body 1, a fully open position adjustment mechanism 20 is provided. This mechanism restricts the rotation of the handle 2 on the fully open side, setting the upper limit of the flow rate of the valve body 12 when fully open.

This invention relates to the field of precision measurement technology, and more particularly to a precision mechanism alignment device. The precision mechanism alignment device includes a frame, an upper alignment mechanism, a lower alignment mechanism, and a coarse alignment mechanism. The lower alignment mechanism includes a first support, a roller assembly, and a micrometer adjustment assembly. The first support is mounted on the frame, and the micrometer adjustment assembly is mounted on the first support and connected to the roller assembly. The micrometer adjustment assembly is configured to adjust the horizontal level of the roller assembly in the height direction. The upper alignment mechanism includes a second support, a vision component, and a leveling bolt. The second support is slidably mounted on the frame in the height direction, and the vision component is mounted on the second support. The vision component is configured to detect the horizontal angle of the second support. The leveling bolt is mounted at the bottom of the second support. The coarse alignment mechanism is mounted at the top of the first support. The leveling bolt can abut against the coarse alignment mechanism, enabling precise adjustment and reducing errors, thereby achieving accurate alignment and facilitating operation.

The utility model discloses a kind of turbine exhaust comprehensive utilization devices of maintaining controllable pressure difference, including steam turbine, condenser, air ejector, circulating water pump and condensate pump, the steam outlet of steam turbine is communicated with the steam side entrance of external negative pressure difference type waste heat recovery device by a steam extraction pipe fitting, and the water side import and export of negative pressure difference type waste heat recovery device is connected with heat user side system.This utility model relates to the technical field of energy saving of thermal system, the turbine exhaust comprehensive utilization device of maintaining controllable pressure difference, by setting additional exhaust steam waste heat utilization pipeline and the heat exchanger of waste heat utilization at the exhaust steam outlet of steam turbine, and by controlling heat exchanger outlet flow and pipeline inlet flow and the flow of main pipeline are corrected, to ensure that back pressure is not too high, steam turbine normal operation is not affected.