2results about How to "Reduce triggers" patented technology

The application discloses a gas circulation reaction control method based on pressure change rate feedforward and related devices, and relates to the technical field of automatic control of chemical processes, and comprises the following steps: acquiring pressure data in real time and calculating a pressure change rate, when the absolute value of the pressure change rate meets a preset trigger condition, determining a target opening degree adjustment amount of a pressure regulating mechanism according to a numerical interval where the pressure change rate is located, and generating a feedforward control instruction, the lead perception of the pressure change trend replaces the dependence of traditional PID feedback control on deviation accumulation, significantly improves the inherent response lag characteristic of the traditional control mode, and effectively reduces the triggering of the equipment surge protection. Meanwhile, when the negative downward pressure change rate meets a preset sudden drop condition, a decoupling compensation instruction is generated to control the gas discharge mechanism to increase the gas discharge amount, thereby realizing the cooperative linkage of pressure regulation and gas discharge, and optimizing the pressure stability of the system under severe fluctuation conditions.

The utility model relates to the technical field of fire-fighting engineering, and discloses a spray head structure for fire-fighting engineering, which comprises a yoke arm seat and yoke arm frames fixed on two sides of the bottom of the yoke arm seat, glass bodies are mounted between the tops of the yoke arm frames and the yoke arm seat through fastening screws, and tooth edges are fixedly connected to the bottoms of the yoke arm frames; the connecting pipe is fixed at the top of the yoke arm seat, a threaded pipeline is arranged at the top of the connecting pipe, and one side of the connecting pipe is fixedly connected with a positioning shell. Firstly, a first protective fence and a second protective fence are mounted in an extension plate through screws, so that the surfaces of a glass body and a yoke arm frame can be protected, triggering of a fire-fighting spraying system caused by collision of external articles is reduced, and the protective fence is mounted on a water conveying pipeline through a threaded pipeline, so that the safety of the fire-fighting spraying system is improved. And then, the connecting pipe can drive the yoke arm seat to be integrally mounted on the threaded pipeline in cooperation with a mounting piece, so that quick mounting is realized, and meanwhile, the maintenance complexity is also reduced.