3results about How to "Smooth pressure fluctuations" patented technology

This utility model discloses a testing device for high-strength ball valve castings, relating to the field of ball valve testing technology. It solves the problem that during sealing, the tooling does not fit tightly against the flange surface of the casting, affecting the accuracy of the testing results. The testing device for high-strength ball valve castings includes: a base; the base adopts a rectangular plate structure; a fixed plate of rectangular plate structure is fixedly installed on the top right side of the base; a set of cylindrical first sliding rods are slidably installed in the circular through grooves on both sides of the fixed plate; a blocking plate of an annular plate structure is fixedly installed at the front end of the two sets of first sliding rods; a T-shaped plate structure upper plate is fixedly installed on the top of the blocking plate; a cylindrical second sliding rod is fixedly installed on the front side of the upper plate; a set of arc-shaped sealing plates are slidably installed on both sides of the second sliding rod; this avoids the false sealing problem caused by uneven force in traditional manual operation, ensuring the authenticity and reliability of the testing results.

The utility model provides a voltage stabilizer. The device comprises a first pressure stabilizing unit, a second pressure stabilizing unit and a water supply port, the first pressure stabilizing unit comprises a diaphragm type air pressure tank; the second pressure stabilizing unit comprises a pressure stabilizing pump; wherein the first pressure stabilizing unit is located between the water supply port and the second pressure stabilizing unit, and the water supply port, the first pressure stabilizing unit and the second pressure stabilizing unit are connected through pipelines. Compared with the prior art, the pressure maintaining and stabilizing device has at least one of the following beneficial effects that operation is conducted in a frequency conversion mode and an intermittent mode, the frequent starting and stopping frequency of the pressure stabilizing pump is reduced, the service life of the pressure stabilizing pump is prolonged, efficiency and energy saving are achieved, operation is stable, operation is convenient, maintenance is easy, pressure maintaining and pressure stabilizing can be effectively conducted on a fire-fighting pipe network system, and the danger level is reduced.

The utility model discloses a heating pipeline of a biomass boiler, the heating pipeline comprises an inner membrane type wall and an outer membrane type wall sleeved on the outer side of the inner membrane type wall, the bottoms of the inner membrane type wall and the outer membrane type wall are communicated with a lower collecting pipe, the tops of the inner membrane type wall and the outer membrane type wall are communicated with an upper collecting pipe, a plurality of gas collecting pipes are uniformly distributed on the top of the upper collecting pipe, and the gas collecting pipes are communicated with the inner membrane type wall and the outer membrane type wall. The included angle between the gas collecting pipe and the horizontal direction is an acute angle, and the length of the inclined section of the gas collecting pipe is larger than that of the vertical section of the gas collecting pipe. The gas-water separator has the beneficial effects that the inclined gas collecting pipe is designed, so that a gas-water mixture can be uniformly distributed along the length direction of the gas collecting pipe, overhigh local flow velocity is avoided, and the separation efficiency is improved; meanwhile, the inclined section of the gas collecting pipe is longer than the vertical section, so that the separation process of steam and water in the gas collecting pipe is further prolonged, and steam and water separation is facilitated.