FIELD: fire safety.
SUBSTANCE: invention is designed for explosion protection of the process equipment in case of an emergency situation (ES). The method for explosion protection with the initial emergency phase alert system consists in that the lined load shutter is movably connected to the gate valve housing by at least three flexible ties. The explosive element is made as a membrane safety device. On one of the diametrically arranged bars of the membrane assembly of the membrane safety device a security indicator in the form of a sensor responsive to deformation is fixed, the output of which is connected to a signal amplifier, and the signal amplifier output is connected to the input of the personnel emergency alert device. In the valve housing, in its cylindrical part adjoining the conical valve portion, a circular aperture with the central opening and at least three openings arranged in the peripheral portion thereof is installed. At the upper part of the lined cargo shutter, axisymmetrically to the valve housing, a rod is fixed, the upper part of which is arranged in the central opening of the aperture. The bushing of a quickly-collapsing material in the form of "triplex"-type glass is mounted between the lower part of the circular aperture and the upper part of the lined cargo shutter, on the support rod coaxially to it, the strength of which is calculated for a certain excess pressure in the valve. On the lateral surface of the bushing of a quickly-collapsing material the additional security indicator in the form of a strain gage is installed, the signal from which by the communication line is sent to the strain amplifier, and from it - into the emergency mode alert system unit.
EFFECT: increased efficiency and reliability of the process equipment protection from explosions in case of an emergency by recording the moment of the initial emergency phase by the personnel alert means.
6 dwg
