Patent RU-2625825-C1 (RU)
Title: System of safety indicators for preventing explosive emergency situations
Inventor: Kochetov Oleg Savelevich
IPC: G08B17/06
Filed: 2016-05-20
Granted: 2017-07-19
Abstract: FIELD: physics. 
     SUBSTANCE: system of safety indicators for preventing explosive emergency situations contains a system of sensors for the sounding system of a hazardous zone with a control electrovalve, the electrovalve running device that is mounted on the locking-and-clamping nut fixed in the upper part of the valve case. The piston is installed inside the case of the electrovalve and coaxially thereto; the piston is fixed in a "standby" state with a holder positioned perpendicular to the piston axis and is also fixed in the piston hole and two holes coaxial thereto in the electrovalve case. The electrovalve is connected to the sounding system of the hazardous zone, including sensors configured to exceed the maximum permissible concentrations of chemically hazardous substances present in this zone, and a probe tuned to exceed the maximum permissible levels of radioactive substances, the signals of which are fed to a common microprocessor that processes these signals and gives a control signal to turn on the electrovalve. The safety system in emergency situations was additionally equipped with a backup security element made in the form of an anti-explosion panel with an emergency warning system containing a metal armored frame with a metal armored cover and a lead filler, which has four fixed branch pipes at the ends. In the explosive object cover, four support rods are rigidly fixed, which are telescopically inserted into the fixed pipe-supports of the panel, the filler is made in the form of an air-lead disperse system. Lead is made in the form of crumbs, and the support rods are made elastic. To the ends of the support rods, from the side facing the metal frame, explosion-proof elements damping the impact of the shock wave are attached. Between the additional elements and the metal frame with the metal armored cover, the bushings of fast-disintegrating material, for example, "triplex" type glass, are mounted on the support rods. The emergency warning system with a safety indicator consists of a "weak link" fastener in the safety system of an explosive object reacting to an emergency situation, for example in the form of a safety indicator fixed between flanges that are rigidly attached to the top of the armored metal cover of the anti-explosion panel metal frame and in the upper part of the cover of the explosive object at the opening intended for dropping the excess pressure. The safety indicator consists of a sensor responsive to the deformation, for example, of the strain gage, the output of which is connected to the signal amplifier, for example, the strain amplifier, and the strain amplifier output is connected to the input of the emergency warning system. Explosion-proof elements are made in the form of a pack of disc-shaped elastic elements containing a circular base, which is movably disposed on the rod with the support sheet by means of, at least, two pins. One end of the pin is rigidly fixed to the support sheet, and the other one enters the hole with a clearance made in the base, and is fixed by means of a nut. A cylindrical glass with a cavity and a hole, through which the rod passes through the gap, is rigidly and coaxially attached to the lower part of the base. The pack of the disc-shaped elastic elements is located with a slight preload between the support sheet and the round base. On the outer surface of the pin, coaxially and axially symmetrically, a bushing is installed from a rapidly disintegrating material, for example, "triplex" type glass, which performs the duplicating function of the "weak link" in the security system. The safety indicator consists of a sensor responsive to the deformation, for example, of the strain gage, the output of which is connected to the signal amplifier, for example, the strain amplifier, and the strain amplifier output is connected to the input of the emergency warning system. 
     EFFECT: invention allows to increase the protection efficiency of explosive objects from emergency situations. 
     2 dwg