The Valve is a Shutoff for the Passive Protection Systems of Pipelines

In this paperwe investigated the protective valve designed for automatic protection of equipment and pipelines from inadmissible or in-process changes in the parameters or direction of the fluid flow and to shut off the flow without ejection of the working environment of the technical system, calculated and experimental parameters. The article presents the results of the experimental investigation of a fast-acting feedwater shut-off valve of the steam generator RU BREST-OD-300. The regularities of work of the pneumatic spring actuator for a pipeline are considered. Parameters and characteristics obtained by the conducted tests fully meet the requirements of ТС 37-089-70262486-2013. The closing time was 7 seconds. The working pressure in the pneumatic system was 4.5 MPa, and the minimum opening pressure was 3.7 MPa. The calculated force on the stem valve upon opening amounted to 201.09 kN, upon closure – 235.81 kN.