Abstract: The invention relates to fire-extinguishing means, and more particularly to sprinklers for fire-extinguishing systems. A sprinkler comprises a body with an outlet opening which is closed off by a check valve, and a unit for controlling the state of the check valve. The sprinkler is provided with a fire sensor and an activation unit. The unit for controlling the state of the check valve is equipped with an electric trigger device. The input pins of the activation unit are connected to the outputs of the fire sensor. The output pins of the activation unit are connected to the outputs of the electric trigger. The technical result is an increase in the response speed of the sprinkler.

Abstract: The apparatus for liquid-phase synthesis of isoprene from isobutylene and formaldehyde, comprising the following units of synthesis of isoprene precursors: 1,3-dioxanes synthesis unit; unit for TMC synthesis from isobutylene-containing fraction; unit for TMC synthesis from recycled concentrated isobutylene derived either from isoprene synthesis unit or from the unit for synthesis products separation and isoprene monomer isolation; isoprene synthesis unit; by-products decomposition unit; unit for synthesis products separation and isoprene monomer isolation.

Abstract: An apparatus for X-ray scanning of vehicles includes a pulsed X-ray source generating X-rays. A collimator forms a fan-shaped beam from the X-rays. A detector detects the fan-shaped beam after it passes through a vehicle. A speed sensor measures a speed of the vehicle passing through the apparatus and providing an electrical output corresponding to the speed. An image formation module converts an output of the detector into an image of the vehicle, based on the measured speed of the vehicle. A cross-section of the fan-shaped beam is substantially similar to a width of the detector. The X-rays comprise primarily photons with energy between 2.5 and 9 MeV. A filter is adjacent to the collimator for filtering out low energy X-ray photons. A vehicle presence sensor can be used, whose output is used to turn the X-ray source on and off. An alignment platform can be used for aligning the fan-shaped beam with the detector. A frequency of the pulses is adjusted based on the speed of the vehicle.

Abstract: An apparatus for X-ray scanning of vehicles includes a pulsed X-ray source generating X-rays. A collimator forms a fan-shaped beam from the X-rays. A detector detects the fan-shaped beam after it passes through a vehicle. A speed sensor measures a speed of the vehicle passing through the apparatus and providing an electrical output corresponding to the speed. An image formation module converts an output of the detector into an image of the vehicle, based on the measured speed of the vehicle. A cross-section of the fan-shaped beam is substantially similar to a width of the detector. The X-rays comprise primarily photons with energy between 2.5 and 9 MeV. A filter is adjacent to the collimator for filtering out low energy X-ray photons. A vehicle presence sensor can be used, whose output is used to turn the X-ray source on and off. An alignment platform can be used for aligning the fan-shaped beam with the detector. A frequency of the pulses is adjusted based on the speed of the vehicle.

Abstract: The invention is related to the systems of so-called “security entrance” and, in particular, to the systems for preventing the entry of forbidden articles and/or substances from an unprotected area to a protected one. The simplicity, efficiency and secrecy of examination in a security system for preventing the entry of forbidden articles and/or substances from a surrounding area to a protected one, said system comprised of a partitioning separating a protected area from an unprotected one, at least, one walk-gate made in said partitioning, an information control-and-processing device and a detector of forbidden articles and/or substances is achieved due to said detector of forbidden articles and/or substances made an X-ray kind to provide secret examination of every person passing through said walk-gate.

Abstract: The present invention relates to the technique for dynamic balancing of rotating bodies and may be used for measuring and correcting forces generated by unbalance of rotors, in particular, rigid rotors. The claimed method allows measurement of the rotor imbalance parameters with high accuracy in two imbalance datum planes. The method is based on imparting of oscillatory motion to a rotor and to a coaxial balanced body relative to a fixed point selected at the common axis of the rotor. To increase accuracy of the method, simultaneously in each time in the plane passing through the above fixed point, forces opposing angular oscillations of the balanced body relative to an axis are exerted to the balanced body tangentially.

Abstract: The present invention relates to a method of purifying gaseous nitrogen trifluoride from CF4 as impurity. The method comprises selective adsorption of nitrogen trifluoride by dehydrated erionite at a temperature of from ?30 to 30° C., displacement of carbon tetrafluoride by an inert gas, desorption and condensation of the purified nitrogen trifluoride. The purification yields 99.99% pure NF3 with CF4 content not over 10 ppm. The proposed method of NF3 sorption purification makes it possible to carry out the process at an ambient temperature and with long operating life of the sorbent. The method is practically feasible, economically expedient, and easy to implement under industrial conditions.

Abstract: The invention relates to a new process for preparing nitrogen trifluoride which finds extensive application in the technology of semiconductors, high energy lasers, and chemical vapor deposition. Nitrogen trifluoride is prepared by the fluorination of urea or its decomposition products with elemental fluorine in anhydrous hydrogen fluoride at a temperature of from −20° C. to 0° C. and the molar ratio of fluorine to the starting compounds of not over 3. The concentration of the starting compounds in anhydrous hydrogen fluoride is preferably 20-50% by weight. The proposed process is explosion-safe and gives a product with maximum content of nitrogen trifluoride and minimum concentration of admixtures, with the yield of up to 90%.

Abstract: The present invention relates to a process for producing fluorinated aliphatic compounds by pyrolysis of perfluorocarboxylic acids and their derivatives—halides and esters. The pyrolysis is carried out in the presence of a catalyst consisting of a carrier most preferably selected from the series comprising active carbon, magnesium oxide, calcium oxide, barium oxide, zinc oxide, aluminum oxide, nickel oxide, oxides of silicon promoted with alkali metal halides, selected from the series comprising fluorides, chlorides bromides, iodides of sodium, potassium, rubidium, cesium, at a temperature in the range of from about 100° C. to about 450° C.; with producing fluorinated aliphatic compounds selected from the series comprising perfluoroolefins, polyfluoroolefins and their derivatives; and also in the presence additionally of hydrogen fluoride with the formation of fluorinated aliphatic compounds selected from the series comprising polyfluoroalkanes and their derivatives.

Abstract: A capacitor with dual electric layer, wherein one of the electrodes is made of a porous carbon material and the other capacitor, of a material containing lead sulfate. The capacitor features enhanced characteristics and lower cost.

Abstract: A dual electric layer capacitor containing two electrodes of which one or both are polarizable, liquid electrolyte, and a separator. The degree of filling the pores of the separator and of both elements is between 40& and 90% of a total volume of the pores.

Abstract: The engine comprises a chamber, fuel and oxidizer booster pumps, a turbopump unit, a gas generator, an electrically driven thrust regulator, and a fuel throttle. A programmable starting and ignition system is introduced, which includes a fuel tank, connected to the thrust regulator, and a first ampoule with starting fuel, an output of which through a starting/cut-off valve is connected to fuel injectors of the gas generator. The aforesaid tank is also connected through a second ampoule to the starting fuel and by a jet to autonomous ignition injectors located in the space of the combustion chamber of the engine. An inclined Archimedian screw pump with a gas turbine as an actuator and an oxidizing gas as a working medium is used as an oxidizer booster pump. The gas is discharged after its use in a turbine into an outlet manifold of the booster pump.

Abstract: A dual electric layer capacitor having one of its electrodes made of a carbon material and the other electrode from a material containing lead dioxide. The capacitor under consideration features improved specific characteristics and lower cost.

Abstract: A tank comprises a structural envelope made in a form of hemisphere with a tube connection having a ring groove in its surface. A tightening ring of the structural envelope. An elastic diaphragm made in a form of hemisphere integrated with a cylinder provided with an end projection that fits into the ring groove. A bottom is made in a form of a sphere part. A thin-walled ring with a shoulder is introduced that is mounted between the tightening ring and elastic diaphragm in the place of its end projection location. The tube flange is provided with an end projection. The tightening ring is equipped with a lateral flange providing a possibility for the thin-walled ring shoulder tightening by it to the ring projection of the tube flange. The external surface of the tightening ring and internal surface of the tube flange are made tapered in the direction from the ring groove to the hemisphere of the structural envelope above the ring groove.

Abstract: A combustion chamber for a liquid-propellant rocket engine includes an injector head jointed to a combustion chamber casing having an exhaust head on a nozzle output. The casing is made of a steel jacket and a bronze-steel internal fire wall, which are joined with each other and contain shells connected in series. The exhaust head with shells of the casing, jointed to the exhaust head, are brazed using a solder on the basis of nickel, chromium and manganese. Parts of the injector head and other members of the combustion chamber casing are brazed using a copper-silver solder. Shells of the fire wall are connected by an electron-beam welding, directing an electron beam into axial gaps left while brazing between shells of the jacket. The shells of the jacket are then sequentially connected by an automatic gas-shielded arc welding through corresponding ring spacers.

Abstract: The invention relates to the field of producing the means for protecting the alloys on the nickel base against the influence of corrosive media, and more particularly concerns the metal-ceramic coatings used for protecting the flow parts of the turbines of turbopump liquid-propellant rocket engines (LRE). The composition for producing the metal-ceramic coating consists of nickel and of oxides of barium, boron, aluminum, cerium and zirconium at the following percentage of components by mass: nickel--36-58, barium oxide--16-19, boron oxide--7-13, aluminum oxide--6-9, cerium oxide--14-19, zirconium oxide--1-2. The coating is produced of a slip, that is applied to the pieces by dipping, spraying or flooding. The slip layers are dried in the flow of hot air. The coating is fired in a furnace in the inert gas medium, argon for example, at a temperature of 1000-1100.degree. C. during 0.5-1 hour.