Pressure vessel carries out hydraulic pressure test's safe relief device

The utility model discloses a pressure vessel carries out hydraulic pressure test's safe relief device, constitute including pressure testing portion and pressure monitoring portion. It is as an organic whole that pressure testing portion and pressure monitoring portion pass through the hose connection. Pressure testing portion includes manometer, left three -way pipe, covers with the pressure testing of equipment mouth of pipe looks adaptation, pressure testing portion includes hydraulic test pump, relief valve and right three -way pipe, all parts are even as an organic whole, and equipment internal pressure equals everywhere that at the pressure testing in -process, when different stage manometers showed that pressure exceed design pressure or hydraulic pressure test pressure, the partial pressure that exceedes will be let out to the relief valve, after the staff of operation hydraulic test pump stops the hydraulic test pump, can take notes the pressure value of accuracy. The beneficial effects of the utili