EXPLOSIVE-PROOF VALVE WITH THE EMERGENCY SITUATION NOTIFICATION SYSTEM Russian patent published in 2018 - IPC E04B1/98 F16K17/36 F16K17/12 F16K17/40 F16K17/14 G08B17/02 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used for explosion protection of process equipment. Explosion-proof valve with emergency annunciation system includes a valve body, a gate valve, heat-insulating and rupture elements, a lined load trim covering a hole made in the body of the protected object, which is located in the lower cylindrical part of the body. In the upper cylindrical part of the valve body there is placed the heat-insulating element and the sealing membrane, which is pressed against the valve body by means of the cover, which is hingedly connected to the lever arm that interacts with the baffle plate. Fastening device of the rupture element is fixed by its upper part on the lever, and the lower one – to the upper cylindrical part of the valve body. Fastening unit of the bursting element co of a wire, a locking bolt, a plug, a valve cover lever, the nut, two reels located respectively in the plug of the valve cover lever and in the plug of the upper cylindrical part of the valve body. Wire ends are inserted into holes of drums and then, wound on them. Movable connection of the lined load trim with the base of the valve body is made in the form of three vertically mounted rods in the holes which are made in the peripheral part of the body of the lined load trim. Rods are fixed by the lower part at the base of the valve body, and in the upper part they have the damping device, which is fixed onto the horizontal crossbeams of the rods and faces the cargo gate. Each of the three damping devices is fixed to the horizontal crosspiece, which is rigidly connected to the rod and made in the form of the circular disk, on which the base of the damping device, which is connected to the elastomer bushing, is fixed by means of screws, having the central opening, through which the rod passes. Sleeve has at least three holes aligned with rod, in which there are elastic elements, for example, cylindrical helical springs, the upper end of which by means of fastening elements is connected to the base of the damping device, and lower end is in free state and protrudes beyond bushing bottom plane at distance defined by force, generated with impact blast wave. Inside the resilient elements, coaxial to them, there are additional resilient elements, for example, made in the form of cylindrical helical springs, while their upper end is connected to the base of the damping device, and the lower one is in a free (non-spring-loaded) state and protrudes beyond the lower plane of the elastic elements by a distance, determined by the force developed by the shock blast wave. In the damping device, coaxially embracing the resilient spring elements and not protruding beyond their lower surface, to the base of the damping device, bushing is attached, made of fast-breaking material, such as glass of triplex type. To the outer surface of this bushing a safety indicator is attached, which responds to the occurrence of the emergency situation, made, for example, in the form of a responsive to deformation sensor, such as a strain gage, which output is connected to a signal amplifier, such as a strain gage, and the output of the strain gage amplifier is connected to the input of the device of the emergency alert system. Movable connection of the lined load trim with the base of the valve body is hollow with a set of damping disks in the inner cavity and is a cylindrical damping element, to the ends of which plain rigid connectors are rigidly attached, and the inner cavity is filled with a set of at least two damping disks fixed to an elastic axis coaxially disposed with the cylindrical shell. Between the damping disks at least one cylindrical helical spring is located, the cavity of which is filled with a vibration damping material, for example, polyurethane.

EFFECT: invention provides increased efficiency of protection of technological equipment from explosions by increasing lined load trim damping.

1 cl, 4 dwg