Method volume firefighting and related equipment
FIELD: medicine, life saving equipment.
SUBSTANCE: method of volume firefighting and related equipment enables to increase efficiency of firefighting procedures due to decreased temperature and losses of fire-control aerosol by introduction thereof with pyrotechnic composition resulted from combustion, thus charges are inflamed from lower non-reserved end face, and produced aerosol is let through channels between charges and through cellular plaster filter. Thereafter aerosol is exhausted to protected volume through clearances of outlet cone. Firefighting unit consists of working body, injector assembly and two fire-resistant grids, and also contains block cellular plaster filter for aerosol cooling, mounted between fire-resistant grids, and outlet cone for uniform distribution of produced aerosol.
EFFECT: provided increase of firefighting efficiency.
2 cl, 3 dwg
The invention relates to fire-fighting techniques, methods of fire extinguishing devices, equipped with a pyrotechnic compositions, which when burned emit fire-extinguishing gas-aerosol mixture. The invention can be effectively used for extinguishing fires and fires in structures and devices of the closed type, such as warehouses, garages, offices, apartments, engine and Luggage compartments of different vehicles.
The current way of surround fire, which consists in receiving the cooled non-toxic gases, based on a joint simultaneous oxidation-restoration-cooled high-temperature gases containing the products of incomplete oxidation, consistent passing them through at least one fixed bed of granular activated alumina and at least one layer of granulated zeolite, separated by at least one fixed by the free volume .
The disadvantage of this method are the large losses resulting gas-aerosol mixture in the combined block "oxidation-reduction-cooling".
Closest to the present invention is a method, which consists in the introduction into the protected volume pre cookislands cooled gas mixture formed during combustion the Institute of pyrotechnic composition. Additional oxidation is carried out by transmission through a layer of sorbent with oxygen-containing oxidant gas-aerosol mixture, and its solid phase with particles of a given size is obtained by passing the cooled gas-aerosol mixture through the filter sorbent through which advanced into the protected volume of injected gas-vapor mixture obtained by desorption of the refrigerant from the surface of a solid cooler due to heat gas-aerosol mixture that is passed through indirect heat transfer . As well as cooling of hot gases and fire-extinguishing aerosol apply natural crystalline minerals or different crystalline salts or oxides of metals or their mixtures, often with the use of different silicates.
However, the implementation of this method detected the following disadvantages: when the actual speed of the expiration of the generator combustion products through deciliter, when the presence of additional oxygen-containing oxidant, it is not possible to significantly reduce the CO content and especially N0 and NO2in an atmosphere protected from fire areas.
To implement volumetric method of fire extinguishing device is used, consisting of a combined block joint simultaneous oxidation-reduction-cooling gases, including at least one of podvijnyi layer of granulated activated alumina and at least one layer of granulated zeolite, separated by at least one fixed constant free volume, with each layer of granulated activated alumina and zeolite is divided into at least two metal grids-grids, and the sequence of layers and the size of the particles of granulated aluminum oxide and zeolite is selected depending on the initial gas temperature, and the combined unit is located in a thermally insulated housing with openings for entry and exit of gases .
However, a significant disadvantage of this device is the bulky design of the generator through the use of a combined unit, which leads to large losses of the generated aerosol.
As the closest prototype of the claimed invention made device, comprising a housing with the outlet and located therein a combustion chamber with a pyrotechnic composition, the initiating device and the cooling unit, which is isolated from direct contact cooler products of combustion of the pyrotechnic composition and consisting of at least two coaxial spaced shells, filled the cooler and the wall of one shell is the inner surface of the housing. In addition, the combustion chamber further comprises a sorbent with oxygen is terrasim oxidant, located between the two partitions, mounted on a pyrotechnic composition, and shell from the opposite side of the combustion chamber have holes, over which set of partitions, the space between which is filled with sorbent filter .
The disadvantage of this device is the use of docility, the combustion of which the concentration of NO and NO2in the protected area is much higher than the permissible; however, the layer silicates melts, and granules of his raft, which makes the output of the aerosol generator, leading to a rise in pressure therein and unplanned time.
The technical result for the solution of which the present invention is directed, is to reduce the temperature of the fire-extinguishing aerosol output from the device, with the loss of aerosol insignificant.
The required technical result is achieved in that way surround fire is the introduction of a protected volume of a fire-extinguishing aerosol generated by the combustion of the pyrotechnic composition, with the charge of pyrotechnic composition are lit from the bottom nezablokirovanne end and the resulting aerosol is passed through the channels between charges and through gypsum block filter of honeycomb structure, and further the aerosol is displayed in the volume to be protected through the gaps in vypusk the m cone. The device for implementing the method surround fire consists of a casing, a site run and two flashback arrestors according nets, also contains gypsum block filter of honeycomb structure placed between flashback arrestors according nets, and the exhaust cone.
Implementation of the proposed method of fire suppression is as follows: in the protected volume introduces the fire-extinguishing aerosol generated by the combustion of the pyrotechnic composition, the ignition of which is produced from the activation unit, and the combustion products of the composition are skipped between shnurovym elements of the charge held on the side surface, and cooled, giving its heat to the unburned portion of the charge. To further reduce the temperature of the aerosol generator output is supplied gypsum block filter of honeycomb structure.
As the aerosol-forming composition was used with the following formulation: sodium azide NaN3- 27%; perchlorovinyl resin - 20%; potassium perchlorate KClO4- 51%; carbon C - 2%.
The charges were made in the form of a set of cord elements of different lengths. The side surface and one end of each cord was covered with booking brand CSU-2 by dipping the reservation, dissolved in acetone. The burning rate of the cord on the air was 2 mm/s and did not depend on its length.>
The table shows the results of the test charge in the form of a set of seven cords in the proposed device.
|The test results charge of seven cords|
|The length of the battery 1, mm||The burning time trop,||The average burning rate U, mm/s|
The dependence of the average burning speed from the length of the charge in the device represented in figure 1.
Obvious was that with increase in length decreases the time of its burning. This can be explained as follows: when the combustion of the composition of the exiting aerosol intensively gives heat to the unburned portion of the charge, the initial charge temperature increases, therefore, increases the burning rate of the composition and reduces the time aerosolization. When reducing the unburned portion of the charge, the temperature of the aerosol at the end of the generator becomes close to the temperature of combustion of the composition. To reduce the temperature of the aerosol is recommended to set the block gypsum filter cell structure is ry.
The temperature change generated aerosol output from the device when the filter length of 20 mm is shown in figure 2.
From figure 2 it is seen that more than half of the operating time of the device, the outlet temperature does not exceed 200°C. Further temperature reduction can be achieved by increasing the length of the filter, but at the same time will increase the loss of the aerosol.
Figure 3 presents the proposed device, where 1 - body, 2 - charge, 3 - exhaust cone, 4 - activator, 5 - incendiary composition, 6 - flashback arrestors according grid, 7 - book, 8 - gypsum block filter of honeycomb structure.
The principle of the proposed device consists in the following. Site run 4 ignites the incendiary composition 5, which is deposited on nezablokirvanny face charges of 2, made in the form of a set of cord elements, booked 7 on the side surface and the upper end face. The resulting aerosol passes through the channels between the charges flowing around the lateral surface, and gives them their heat. For additional cooling of the formed aerosol is advisable to use a block of gypsum filter of honeycomb structure 8, which is placed between flashback arrestors according nets 6. On the housing 1 is fixed exhaust cone 3, which evenly distributes the generated aerosol in the protected volume.
The proposed method volumetric fire is osenia and device for its implementation effectively extinguish the fire and the fires of various combustible substances in the structures and devices of the closed type. They are characterized by fairly low temperature forming fire-extinguishing aerosol output from the device, and a significant reduction of its losses.
The proposed set of essential features not known from the available information sources prior art and can be commercially reproduced in production, i.e. meets the criteria of patentability.
1. RF patent №2193430, publ. 27.11.2002, CL 62D 3/00, AS 3/00.
2. RF patent №2142834, publ. 20.12.1999, CL AS 3/00, AS 35/02.
1. Way surround fire, which consists in the introduction into the protected volume of the fire-extinguishing aerosol generated by the combustion of the pyrotechnic composition, characterized in that the pyrotechnic charge of the composition of the light from the bottom nezablokirovanne end and the resulting aerosol is passed through the channels between charges and through gypsum block filter of honeycomb structure, and further the aerosol is displayed in the volume to be protected through the gaps in the exhaust cone.
2. The device for implementing the method surround fire, consisting of a body, site launch and two flashback arrestors according grids, characterized in that it further comprises a gypsum block filter of honeycomb structure placed between flashback arrestors according nets, and the exhaust cone.
SUBSTANCE: converter includes housing and devices for input oxygen enriched air, fed of vapour-hydrocarbon mix and bleeding of converted gas. The housing is provided with inner fikking designed as two cylindrical tubes installed one inside the other and forming with the converter housing two radial clearances: the outer clearance for input vapour-hydrocarbon mix and inner one for output of converted gas. At that the packing made of channeled plates is provided for inner fikking, this packing forms the channels of square section; the upper part (1/20-1/25) of channels is provided with perforation track, the middle part (1/5-1/6) of channels height located lower than perforation track is filled with catalyst used for primary and secondary hydrocarbon conversions; and the lowest part (1/6-1/8) of channels height is filled with catalyst used for preliminary hydrocarbon conversion. The device for input oxygen enriched air is positioned in the upper part of channels. The method is implemented in converter. Hydrocarbon material heating and converted gas cooling are carried out by the way of its passing through heat exchanger and mixing of hydrocarbon material with water vapour, then vapour-hydrocarbon mix is fed downstream through outer radial clearance and further it is delivered up the channels through catalyst bed for implementing of preliminary and primary conversions. Then through perforation track it is fed down the channels for converted gas oxidizing and secondary vapour conversion with subsequent converted gas upflow takeoff through inner radial clearance.
EFFECT: increasing of hydrocarbon material conversion and reduction of probability of free carbon formation.
2 cl, 3 dwg
FIELD: processing of hydrocarbon raw materials; oxidizing conversion of hydrocarbon gases into synthesis-gas.
SUBSTANCE: proposed method is carried out in flow-through two-chamber reactor in turbulent mode at combustion of mixture of hydrocarbon raw material and oxidizer. Superheated water steam is additionally introduced into said mixture in the amount of 5-20 mass-% relative to mass of carbon fed in form of hydrocarbon raw material. Three-component mixture is ignited in combustion chamber by jet of hot gas fed from external source where pressure exceeds pressure in first chamber during ignition. Combustion products from first chamber of reactor are directed to second chamber via nozzle at critical difference in pressure and combustion process is continued till content of oxygen in combustion products does not exceed 0.3 vol-%. Process is carried out in combustion reactor which is made in form of two coaxial cylindrical chambers with cooled nozzle located in between them; section of this nozzle ensures required pressure differential between chambers. Injector unit mounted at inlet of first chamber is used for delivery of working mixture components. Turbulator is mounted in first chamber. Lateral surface of first chamber has one or several holes for introducing the jet of hot gas from external source whose pressure exceeds pressure of first chamber and volume of second chamber exceeds that of first chamber. Proposed method makes it possible to produce synthesis-gas at H2/CO ratio approximately equal to 2.0; residual content of oxygen does not exceed 0.3 vol-% and content of carbon black does not exceed trace amount.
EFFECT: enhanced efficiency.
9 cl, 2 dwg, 11 ex
FIELD: chemical industry; other industries; production of generators of the oxygen-hydrogen mixture.
SUBSTANCE: invention is pertaining to devices for water dissociation. Generator of oxygen-hydrogen mixture contains the body and the cover pressurizing its inlet, the shaft of the compressor located in the body and linked to the drive gear, the spray jet with the cavitator of feeding and sputtering of water, the fitting pipe for withdrawal of the gas mixture. The cover is made with the capability of the controlled air intake in the body through cavitator. The spray jet with the cavitator is made with the capability of feeding and sputtering of water in the stream of the air taken into the body. The fitting pipe for withdrawal of gas mixture has at least two in serial installed in it cavitators and with the capability of feeding of the gaseous mixture through these cavitators and the shutter to the consumer. At that the controlled intake of the air in the body can be exercised either through the annular channel with the annular cavitator, or through the fitting pipes with cavitators. The invention allows to increase effectiveness of parameters of the generator.
EFFECT: invention ensures the increased effectiveness of the generator operation.
2 cl, 4 dwg
FIELD: chemical industry; aircraft industry; space industry; production of the chemical generators of oxygen ensuring the life activity of the person in the emergency situations.
SUBSTANCE: the invention is pertaining to the chemical generators of oxygen ensuring the life activity of the person in the emergency situations in aviation and on the space stations. The oxygen generator includes the body, the briquette of the solid source of the oxygen, the initiating device, the filter and the fitting pipe for the oxygen outlet. The briquette is made on the basis of lithium perchlorate and is placed in direct contact with the wall of the body. The oxygen outlet fitting pipe is located on the butt from the side of the briquette initiation part. The invention allows to simplify the oxygen generator design, and also to increase the specific outlet of the oxygen per one unit of the mass and the volume of the oxygen generator.
EFFECT: the invention ensures simplification the oxygen generator design, the increased specific outlet of the oxygen per one unit of the oxygen generator mass and volume.
FIELD: chemical engineering.
SUBSTANCE: catalytic composition material comprises a mixture composed of acetylene hydrocarbon with aromatic substituent or potential oligomer that represent a hydrogen source and carrier and metal of VIII group that represents a heterogeneous catalyzer. The mass ratio of the hydrogen source and catalyzer ranges from 5:1 to 1000:1. The method comprises filling the system with hydrogen in the course of the contacting of acetylene hydrocarbon with the heterogeneous catalyzer in heated tank at a temperature of 50-200°C and hydrogen pressure of 5-1 atm and extracting hydrogen from the system when completely hydrated hydrocarbon in the first stage is in a contact with the same catalyzer at a temperature 200-350°C and pressure 0.5-5 atm.
EFFECT: increased rate of extracting.
10 cl, 2 dwg, 2 tbl, 8 ex
FIELD: chemical industry; aircraft industry; shipbuilding industry; space industry; fire-protection; care of public health; devices for production of oxygen.
SUBSTANCE: the invention may be used for production of the cooled oxygen for breathing of the people in the emergency situations in the airplanes, the submarines, the space stations, at fires. The chemical oxygen generator contains the charge case and located in it the porous gas-permeable mechanically strong charge. The charge is made out of the mixture emitting the oxygen at the exothermal self-supporting decomposition after its initiation and contains of no more than 3 mass % of the binding agent. The charge ensures the possibility for the oxygen to pass through without damaging the non-treated material and without its volumetric volume burning. The produced oxygen passes through the charge under action of the difference of the pressures from the front of the decomposition moving in the direction to the outlet opening. The oxygen generator also contains the device for ignition and one or more the outlet openings for the produced oxygen coming out, the filters for its cooling, for prevention of the particles of corpuscles and contaminants carry-over, and also the filter with the catalyst for conversion of the produced at decomposition of CO2 into CO.
EFFECT: the invention ensures the possibility for the oxygen to pass through the charge without damaging the non-treated material and without its volumetric volume burning.
27 cl, 2 dwg
FIELD: chemical industry; chemical reactor and the method for production of hydrogen.
SUBSTANCE: the invention is pertaining to the power equipment may be used for production of hydrogen both in the stationary plants and on the vehicles. The hydrogen is produced by the hydrolysis (decomposing of water) at its interaction with the granules of the solid reactant (aluminum, silicon, etc.) definitely located inside the chemical reactor. The chemical reactor for production of the hydrogen consists of the cylindrical body with the liquid reactant medium, in which there is the temperature sensor connected with the control unit, and in the upper part of the body there is the union for withdrawal of the gaseous product of the reaction. At that inside of the body the tubular heat exchanger is installed. The tubes of the heat exchanger are arranged at least along two concentric circumferences, spaced from each other and communicate through the collector equipped with the valves for feeding of the heating carrier. Between the tubes of the heat exchanger in the liquid reactant medium there is the annular fire grate, on which the solid reactant granules are placed. The chemical reactor has the vertical spacers inserted between the tubes located on the concentric circumferences shutting the gap between the adjacent tubes. Besides there are the vertical inserts placed between the opposite tubes of the adjacent concentric circumferences shutting the gap between the tubes. At that the indicated spacers and inserts form the zones free from the solid reactant granules, and the valves of the heat carrier feeding are connected through the control unit to the temperature sensors. The method of operation of the chemical reactor for production of hydrogen provides for the liquid reactant feeding in the chemical reactor, withdrawal of the heat and the reaction products from the reaction zone with the help of the heat carrier. Before the liquid reactant feeding into the chemical reactor this reactant is heated up to the temperature ensuring the preset duration of the operational cycle of the reaction, and the heat withdrawal from the chemical reactor with the help of the heat carrier begin at reaching the temperature equal to the temperature of the liquid reactant boiling point with the increase of the heating carrier consumption till the boiling temperature of the liquid reactant will drop to 0.9÷0.8 of the liquid reactant boiling temperature, after that the consumption of the cooling heat-carrier maintain constant till completion of the chemical reaction in the chemical reactor. The inventions allow to increase efficiency of the chemical reactor, to reduce its dimensions and the mass, to improve the fire-explosion safety, to simplify the chemical reactor operation, to reduce its operational costs.
EFFECT: the inventions ensure the increased efficiency of the chemical reactor, the reduced its dimensions and the mass, the improved the fire-explosion safety, the simplified operation of the chemical reactor, the decreased its operational costs.
2 cl, 1 dwg
FIELD: chemical or physical processes.
SUBSTANCE: gas analyzer comprises housing (2) that receives solid-fuel charge (3), igniter (5), and filter-cooler (7) made of gas-permeable coarse-grained powder (8) whose grain size ranges from 0.13 to 0.5 mm. Filter-cooler (7) is provided with gas-permeable disks (14) arranged perpendicular to its axis. The disks are made of a material whose thermal conductivity exceeds that of dispersion powder (8) by a factor of 15. The temperature of melting, decomposition, or sublimation of dispersion powder (8) exceeds the temperature of the products of combustion of solid-fuel charge (3) by 20%. The length of filter-cooler (7) ranges from 100 to 2500 of the mean size of the particles of powder (8) of the filter-cooler.
EFFECT: reduced temperature and contamination of combustion products.
3 dwg, 1 tbl
FIELD: chemical industry; the portable devices for the fire extinguishing.
SUBSTANCE: the invention is pertaining to the field of the fire-fighting equipment, in particular, to the portable fire extinguishers (manual, pistol, pack) and may be used for fire extinction by feeding of the fire-extinguishing agent (fluid, powder) to the center of inflammation. The stated technical solution allows to improve the operational capabilities and its usage convenience due to expansion of the range of the used fire-extinguishing matters, minimization of time used for replacement of the pressure forming means, provision of the possibility to correct the volume of the gas-generating composition according to the existing need at the simultaneous increase of effectiveness of operation due to the maximum utilization of the internal volume of the container and elimination of the unproductive feeding of the gas. The represented portable fire extinguisher has the container for the fire-extinguishing matter and the gas-generating tool for creation of the operational pressure. The portable fire-extinguisher singularity consists, that it is supplied with the a control unit, the pressure sensor located in the container, at that the gas-generating tool is made in the form of at least two gas generators arranged in the airproof cassette mounted outside the container and linked with it by means of the high-speed coupling, and the control unit interacts with each gas generator with provision of their consecutive actuation.
EFFECT: the invention ensures the increased effectiveness of operation, the improved operational capabilities, convenience of usage, expansion of the used fire-extinguishing matters, minimization of the time for replacement of the pressure forming means, the possibility to correct the volume of the gas-generating composition.
3 cl, 1 dwg
SUBSTANCE: gas generator comprises housing provided with means for gas discharging made of openings on the side of the housing and gas generating and igniting charges mounted inside the housing and made of pyrotechnical compositions. The initiating member is mounted on one of the faces, and filter is mounted on the side and faces of the gas-generating charge. The surface of the gas-generating charge is armored from the side of the gas outlet. The auxiliary charge is mounted axially symmetrical in the gas-generating charge and is provided with layers that pass from the axially symmetrical layer to the periphery and connected with them.
EFFECT: enhanced reliability and expanded functional capability.
4 cl, 1 dwg
SUBSTANCE: lock and release mechanism for extinguisher includes head attached to a container. The head is provided with inlet and outlet channels for fire extinguishing agent supply. Bushing with flange from one side and circular bead from the other side is threaded into the housing. Rod is spring-loaded with regard to head and installed into bushing hole to enable interaction of locking element with circular bead acting as valve seat. Pivoted steering lever and handle for transportation with fastening base are located inside head at an angle to head axis. To fix handle under bushing flange, handle base is provided with tie-down slot covering bushing under flange and pressing handle base to head. Pivoted lever with threaded hole is attached to rod via pusher being in the shape of screw with retainer nut. Head material is profiled iron of aluminium alloy. It is processed by pressing and drawing method. Bushing material is brass.
EFFECT: improvement of operational reliability and reduction of mechanism repair cost and price.
4 cl, 4 dwg
SUBSTANCE: generator can be applied for large scale fire extinguishing in closed or semi closed spaces. To increase an operating speed the generator is designed with case having a cylinder coating, the said case is with a front bottom and a perforated nozzle cover, generator is also equipped with charge of aerosol forming composition, situated between the front end and a ring support, cooling unit, assembled on the support ring, pipe, fastened inside the case along its axis, inducor, installed inside the pipe and trigger. Hollow bushing is installed between and rigidly attached to the ring support and the support ring, the side surface of the bushing has windows for burning products outlet. Charge is made of multi blocks and consists of at least three cylinder blocks which are installed lengthwise a circle between the inside surface of the case coat and outside surface of the pipe. The ring support is fastened on the end of the pipe facing the cooling unit, at that the opposite end of the pipe is fastened onto the front bottom of the case, and the side surface of the pipe is perforated.
EFFECT: simplification of the design of aerosol forming solid fuel charge, increase of reliability of its performance.
6 cl, 3 dwg
SUBSTANCE: invention can be used in closed or semi closed spaces. To increase reliability of performance generator comprises case with a cylinder shaped coat and with solid and perforated bottoms, charge with aerosol forming composition, cooling unit fixed at one side with the perforated bottom, and from the side of the charge -with a perforated partition. Linear bushing with a perforated side surface is situated within the inside surface of the solid bottom along the axis of the case. Charge is of multi blocks and consists of one central and least two peripheral cylinder shaped blocks, at that the central cylinder block is located along the axis of the case allowing it to be supported at one end with a linear bushing, and at the other end with the perforated partition; peripheral cylinder blocks are situated lengthwise with an axial set off against the central block along the circumference between the central block and the cylinder coat of the case; inducer with a trigger is assembled inside the linear bushing.
EFFECT: increase of efficiency of large scale fire fighting.
3 cl, 2 dwg
FIELD: flying vehicle fire-fighting equipment.
SUBSTANCE: proposed device has soft reservoir secured on external store above lock of helicopter water drain unit, hose for delivery of additives from reservoir to helicopter drain unit and proportioner made in form of valve with remote control console and cable system. Soft reservoir is ellipsoid in shape and is provided with belt skeleton for compression of this reservoir. Proportioning of liquid additives is performed from helicopter cabin with the aid of programmed timer of remote control console connected with electric valve mounted in lower end of soft reservoir by means of cable. Electric valve remote control console is combined with remote control console of helicopter water drain unit.
EFFECT: simplified construction; reduction of mass; enhanced safety.
3 cl, 4 dwg, 1 tbl
FIELD: fire-fighting equipment, particularly fire-extinguishers, for instance powder fire-extinguishers.
SUBSTANCE: fire-extinguisher comprises cylindrical body with head and bottom, shutoff-and-triggering device with spraying head and siphon pipe for powder distribution from cylindrical body into spraying head through shutoff-and-triggering device. Cylindrical body has mouth head including support flange secured inside cylindrical body and connected to mouth thereof by spot weld seam. The bush has cylindrical central pipe mating support flange thereof. Central pipe includes inner thread for shutoff-and-triggering device connection to cylindrical body. Sealing gasket made of elastic material is clamped between shutoff-and-triggering device and body mouth. Bottom is air-tightly secured to cylindrical body by means of welding.
EFFECT: increased body reliability, decreased labor inputs for fire-extinguisher body manufacturing and reduced body manufacturing accuracy requirement.
FIELD: fire-fighting equipment, particularly portable fire-extinguishers.
SUBSTANCE: fire-extinguisher comprises vessel with working fire-extinguishant, fire-extinguishant displacing system, which distributes fire-extinguishant from vessel and has siphon pipe used as working liquid flow rate regulator body and spraying means connected to outlet of locking-and-triggering means connected with siphon pipe outlet. Air-tight resilient shell, which defines cavity communicated with through body channel by means of body orifice, is arranged from outer side of siphon pipe. Spring-like regulating member transversal to longitudinal through channel axis is arranged in the through channel so that the regulating member may slide via body orifice. The regulating member is in contact with resilient shell. Spring-like regulating member or two plate-like regulating members including similar plates change through channel throat in dependence of working medium pressure at regulator inlet.
EFFECT: increased reliability and response due to simplified flow regulator structure.
17 cl, 10 dwg
FIELD: manufacturing high-pressure vessels.
SUBSTANCE: method comprises screwing the valving members in the neck with an arbitrary tightening torque with the use of a lubricant that is applied on the threaded section of the valving member from the side of its face within the section between the first and fifth turn of the thread along the 1±0.5 of the turn length over its periphery. The lubricant is made of a one-component anaerobic glue in amount corresponding to the volume of the spiral space between the turns of the neck thread and answering turns of the threaded section of the valving device over the length no less than one turn of the thread. The assembled vessel is then allowed to stand for forming a polymeric composition in the spiral space for at least 20 min at a temperature of no less than 5°C. The threaded connection is sealed by means of a polymeric composition.
EFFECT: enhanced reliability.
1 cl, 5 dwg
FIELD: storing or distributing liquids or gases.
SUBSTANCE: vessel comprises threaded neck, valving system with threaded part to connect it to the neck, and device for the relief of pressure when assembling mounted on the threaded part of the valving system. The seal is made of a polymeric composition and is set in the spiral space between the turns of the vessel neck over the section between the outer face of the threaded neck to the device for pressure relief to define a glue connection. The method comprises mounting valving system with the cylindrical threaded section to the threaded neck of the metallic vessel and sealing the cylindrical threaded connection. The valving system is screwed in the neck with an arbitrary torque with the use of a lubricant made of an anaerobic glue that is applied on the turns of the thread or turns at any site of the threaded section. The assembled joint is allowed to stand at a temperature no less than 5°C over at least 20 min.
EFFECT: simplified structure and reduced labor consumption for assembling.
9 cl, 8 dwg, 2 ex
FIELD: fire-fighting, particularly fire-extinguishing means using fire-extinguisher generated as two-phase gas-and-droplet flow.
SUBSTANCE: fire-extinguishing device comprises at least one fire-extinguishing liquid vessel, at least one compressed gas cylinder, gas pressure regulator, connection hose system and directed gas-and-droplet flow generation means. The gas-and-droplet flow generation means includes body, controlled liquid and gas delivery valves, mixing chamber for gas and liquid mixing made as cylindrical channel and gas-dynamic nozzle. Cylindrical bush is installed in the mixing chamber. Cylindrical bush is arranged in the body so that annular liquid delivery gap is created between the bush and body wall. The annular gap provides tangential liquid inlet. Inner bush surface defines cylindrical mixing chamber channel. Slot-like injection orifices are created in the bush. The slot-like orifices are directed transversely to axis of symmetry defined in cylindrical channel of mixing chamber. Slot-like orifice widths are not more than 0.07D, where D is inner bush diameter. Bush section provided with injection orifices has length L0 measured along cylindrical channel, wherein the length L0 is selected from the following condition: D≤L0≤2D. Summary throat area of slot-like orifices Sor is not less than 0.01Sin, where Sin is inner bush surface area. The slot-like orifices are spaced equal distances along axis of cylindrical channel symmetry.
EFFECT: decreased fire-extinguishing liquid losses, increased spatial uniformity and stability of generated fine gas-and-droplet flow.
7 cl, 2 dwg
FIELD: fire-fighting equipment, particularly portable extinguishers which are permanently pressurized or pressurized immediately before use.
SUBSTANCE: fire extinguisher comprises body, fire-extinguishing composition, siphon pipe, locking-and-triggering head, triggering lever, discharge nozzle, thermal lock, transition spout and external connection pipe. The thermal lock is provided with removable protective covering having inner diameter equal to 4.0-8.0 thermal lock bulb diameters.
EFFECT: increased fire-extinguishing efficiency.
4 cl, 1 dwg
FIELD: fire-fighting, particularly for extinguishing fires on transport and in rooms.
SUBSTANCE: plant comprises module with fire-extinguishing powder having partition installed along module body height. Partition serves as deflector and has concave shape. Orifices are formed along partition periphery. Plant has siphon tube with cuts oppositely formed at end thereof. Thermal jacket is connected to body portion. Container with gas-generation composition and heating member enclosed by insulation cup is arranged in body bottom.
EFFECT: possibility of extinguishing fire with the use of increased reliability and performance.
9 cl, 4 dwg