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Cooling circuit of heat exchange unit Invention relates to heat power engineering and can be used in cryogenic equipment for evaporation of gaseous media contained in liquid state in rocket-and-space equipment and in national economy, for example for gasification of liquefied gases and their mixtures. The cooling circuit of a heat exchange unit, preferably of a cryogenic liquid evaporator, which contains a housing, in which heat exchange element and a heater is located. The housing is made in the form of at least two double-layer covers forming an annular cavity for passage of heating heat carrier; with that, each of the covers consists of two shells rigidly attached to each other, between which channels combined into cryogenic product supply and discharge manifolds are formed. A cover plate in which mixing elements and an ignition device is fixed at the annular cavity inlet, and a gas line is installed at its outlet. The circuit is shaped and includes at least a cylindrical part and a convergent part in the form of a confuser, preferably a conical one, so that an annular cavity with channels for passage of cryogenic component between the above parts is formed. Ribs forming channels for passage of cryogenic component in the internal cover are made on inner surface of cylindrical part of the external shell; with that, the above ribs of the convergent part of the shell are made on outer surface of the internal convergent part of the shell. Inside the conical part, preferably in its central zone, there installed is a connection pipe connected to the cavity of the internal cover, and manifolds for supply and discharge of cryogenic component to the inner cavity of the external cover are located on the above convergent part of the external cover. |
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Hydrogen accumulator having a housing, a hydrogen storage from metal alloy in the form of a metal - hydrogen alloy system, which is characterised by the fact that inside the housing an arrangement is made for a tank with hydrogen accumulators that represent compact metal plates connected to each other, having the thickness of up to 500 mcm and made from nickel - boron alloy in the form of a nickel- boron - hydrogen electrochemical system, and plates are connected to heat lines located between the housing and the tank. In the housing there is a neck for filling of an electrolyte into the tank and its drain through another neck and removable plugs on them. On the housing there are electric current supply contacts for charging of the accumulator by a galvanic method, one of which is located on the tank, and the other one is connected to metal plates from nickel - boron alloy, and on the housing there are inlet and outlet branch pipes from a manifold of an exhaust pipe of the motor. On the housing there is an outlet branch pipe from an internal tank to hydrogen outlet to an engine feed system, and on plates from nickel - boron alloy there is a heating element with contacts on the housing surface. |
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Station for transfer and separation of polyphase mix Proposed station is designed to transfer and separate the multiphase mix. Its comprises manifold 1, bore pup units 2, 3, water-jet pumps 4, 5, 6, separator 7, fluid counter 8, drain tank 9, discharge pressure pipe 10, shutoff valves 11-28, check valves 29-35 and safety valve 36. Drain tank 9 is equipped with semisubmersible pump to force fluid to manifold inlet 1. Besides, said rain tanks is communicated via check valve 35 and shutoff valve 28 with fast-release joint 37 to pump fluid to tank-trucks. |
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Method for control of liquid transmission through pipeline Method includes displacement of a liquid batch through the gate at the pipeline terminal by a separator operated by a compressed gas supplied from the compressor station installed at the pipeline initial point and shutdown of the compressor station. In the process of liquid transmission, using the database including length of the pipeline section, inner diameter of the pipeline, discharge pressure of the compressor station which is sufficient for displacement of the liquid batch, rated gas delivery at the discharge pressure, height points in the route profile for the pipeline section, maximum permitted rate for liquid displacement from the pipeline, time interval sufficient to determine the separator speed, as per the computational procedure in the program control unit the separator speed is calculated, compared with the preset maximum permitted rate for liquid displacement from the pipeline and when the permitted speed is exceeded the compressor station is shut down and further liquid displacement through the gate at the pipeline terminal is made by energy of compressed air. |
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Method for isolation of a storage reservoir for cryogenic liquefied gas includes filling of isolation material into annular space formed by wall of the inner reservoir and outer vacuum shell of the reservoir, and pumping out from this space until the required residual pressure is reached. The annular space is filled by the insulation material using cyclic filling from the bunker under maximum depression in the annular space. Preliminary prepared mixture of pearlite with granulated cotton wool is used as the isolation material. The above granulated cotton wool is made of pieces of basalt or glass superfine fibres. |
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Complex for natural gas supply to consumer Invention relates to supply of natural gas to consumer at its conversion into gas hydrate. Gas conversion means comprises reactor connected with gas and water sources, means to cool the mix of water and gas, means to maintain reactor pressure not lower than equilibrium pressure required for hydrate formation and means to discharge gas hydrate into carrier. The latter should have cargo compartments that can maintain thermodynamic equilibrium to rule out gas hydrate dissociation and means to decompose gas hydrate for gas production. Complex reactor can form gas hydrate pulp and is composed by the tank designed to sustain pressure over 1 MPa and to keep up temperature at the level of 0.2°C. For this, means to cool the mix of gas and water comprises the vacuum ice generator. The latter is composed of heat-insulated tank communicated with sea water source and vacuum outlet of turbocompressor. Note here that ice generator outlet is connected with separator of ice from brine, separator ice outlet being connected with ice mixer and sweet water. Note here that natural gas source is connected with reactor gas inlet and ice generator turbocompressor gas turbine. Reactor second inlet is connected via ice-bearing pulp duct with ice-bearing pulp accumulator composed of heat-insulated tank. Note here reactor hydrate outlet is connected via first pulp duct with hydrate-bearing pulp accumulator. Reactor water outlet is connected with ice mixer and sweet water. Note also that said outlet of ice mixer and sweet water is connected via second ice-bearing pulp duct with ice-bearing pulp accumulator inlet. Besides, gas hydrate discharge means comprise pulp pump and gate arranged at ice-bearing pulp accumulator discharge pipe to be connected with carrier cargo compartment intake pipe. Note also that carrier cargo compartment can be connected with discharge compressor intake pipe, discharge compressor outlet is connected with gas-holder. |
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Method for determining pipeline service life Method consists in the quantitative assessment of pipeline damageability as an operating time function. Service life at the stage of operation is determined by the correction of the design service life. In case a pipeline was overhauled, the service life is determined as Т s l o = Т s l p m min − 1,26 exp 1 N r + Т o p o v , where T s l p stands for the service life defined at the design stage, mmin - for minimal life shortening factor, Nr - for the relation of the amount of replaced pipes to the total amount of pipeline pipes, Topov - pipeline operating time by the moment of overhaul performance. Otherwise where possible the in-line technical diagnostics is carried out for certain pipeline sections and fraction number of defective pipes and operating condition index are defined. At a pipeline with no pig traps installed, the corrosion inspection is carried out by measuring the current induced in the pipeline by an external source, along the pipeline route with the step not exceeding 10 m. On the basis of the obtained data, the integral operating condition index for the whole pipeline Pcond is defined and its value is used for the determination of the service life at the stage of operation as Т s l o = Т s l p k l s = Т s l p m max − ( 1 exp Р c o n d ) Т s l p Т o p , where kls stands for the life shortening parameter, mmax - maximal life shortening factor, Top - the pipeline operating time. |
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Method for determination of pipeline obstruction place In monitored section, pumped liquid pressure Pp (MPa) and terminal pressure of obstruction formation P"к" (MPa) is recorded in continuous mode. Without stopping operation of pumps, portion of compressible liquid of specified volume V1 (m3) is charged into obstructed pipeline section within time t1 (h) and pressure P1 (MPa) on measuring unit is recorded. The measuring unit is located at pipeline inlet. After charging a portion of liquid, the place of obstruction n-m is specified in obstructed section by means of pumping the portion of compressible liquid and ΔP1 (MPa) is calculated as difference between pressure after adding conveyed liquid P1 and terminal pressure value of obstruction formation at pipeline inlet P"к" (MPa). |
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Method to recover bearing capacity of pipeline Method includes laboratory impact and compression-decompression tests according to the "stress-test" scheme of cylindrical samples with crack-like defects, modelling of conditions of pipe metal deformation under action of inner pressure in direction of main stress action. Using test results, they determine limit value of deformation providing for reserve of plasticity of pipe metal under conditions of action of circular stresses equal to 110% of the yield point. With account of results of laboratory tests they perform testing of a pipeline section for impact by method of "stress test" and recovery of its bearing capacity. Stressed-deformed condition and forecast term of safe operation of the repaired pipeline section is defined by calculations. |
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System for high-pressure pneumatic unit preparation for operation Invention relates to high-pressure vessels charging with compressed gases with gas leakage degree measurement. Hermetic tightness control system includes pneumatic unit containing high-pressure cylinder communicating with charging valve and with line for working gas delivery to consumer which line is equipped with sealing device; excess pressure helium source and high-pressure working gas source with helium and working gas delivery lines respectively made capable to communicate with charging valve of pneumatic unit, accumulating container for leakage from pneumatic unit made of thin-walled elastic material with possibility to accommodate pneumatic unit and provide with gap for unit passing and with gap sealing device, mass-spectrometric helium leak detector provided with sampling line with probe with Luer needle and vacuum pump communicating with sampling line through valve. Area of free surface of accumulating container after its gap sealing exceeds area of outer surface of pneumatic unit. The system also contains syringe of gauged volume with needle for air injection into accumulating container. |
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Inflammable valve for gas container and method of its assembly Inflammable valve comprises the main body and sub-body. Said main body consists of cranked vertical part including inner chamber and horizontal part. Sub-body is connected with said main body by connecting rib for arrangement parallel with vertical part. High-pressure gas flow channel is made inside said sub-body. Sub-body lower end is configured to communicate with main body horizontal part via gas inlet. Method of valve assembly comprises the steps that follow. Valve stem as-assembled is fitted in the main body main vertical part. Safety valve is fitted in sub-body. Sub-body is arranged so that sub-body centre is located on imaginary line connecting locating recess centre with mount cover flute centre. Main body vertical part is inserted in mount cover locking recess. Mount cover is attached to vertical part by squeezing locating recess outer edges. |
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Station for transfer and separation of multiphase mix Station contains a collector (1), a separator (2) with two outputs (3) and (4), an outlet pressure pipeline (5), at least one boring pump unit (6), at least one water-jet pump (7) with a passive (8) and active (9) input, at least one gate (10) and at least one return valve (11). The output of the collector (1) is connected hydraulically to the passive input (8) of each water-jet pump (7). The output of each boring pump unit (6) is connected hydraulically to the active output (9) of at least one pump (7). One output (3) of the separator (2) is connected hydraulically to the outlet pressure pipeline (5) while the other output (4) of the separator (2) is connected hydraulically to the input of each boring pump unit (6). The output of each pump (7) is connected hydraulically to the input of the separator (2) through the respective gate (10) and respective return valve (11). At that at least one boring pump unit (6) is equipped with the gate (15) intended for outlet of gas from the unit or filling it with liquid. |
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Cylinder for dissolved acetylene Invention relates to gas industry, in particular to devices for flammable gases storage and transportation. A cylinder consists of a cylindrical body with a nozzle filled with a porous acetone-impregnated mass. The cylinder has a central tube with swing-aside fixing bars. On the top end of the tube, a removable threaded plug is made, and on its bottom an end conical nozzle with holes is mounted. |
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Method of hydrogen accumulation Electrodes are metal-ceramic nickel electrodes without active mass, used in nickel-cadmium accumulators. |
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Reinforced shell of laminar composite for inner pressure Shell is made in the form of two sections 1 and 2 with cylindrical areas 3 and 4 and butt convex bottoms 5 and 6 with formation at the cylindrical part of each section of circular butt ends 13, 14 at which outer surface of the cylindrical part from the bottom side there are step-like additional layers of woven fabric 15, 16, 17, 18 impregnated with a binding agent thus forming conical surfaces 19, 20; all woven layers are divided at least into two groups 15, 16 and 17, 18, and each group is covered by at least one layer of the basic structure material 23, 24 and 25, 26; at the butt end near the inner surface of one section there is a protrusion 27 with a centring surface 29 and in the second section there is a matching depression 28 with the surface 30 equidistant to the centring protrusion surface; butt surfaces of the protrusion and depression 31, 32 are spaced mutually thus forming a circular groove 33 with a sealing element placed in it. |
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Method to monitor internal corrosive changes of manifold pipeline and device for its realisation Invention relates to the field of diagnostics of a linear part of pipeline systems and may be used for diagnostics of technical condition of an inner wall of manifold pipelines. Excitation and measurement coils are placed on the outer surface of the pipeline, a harmonic test signal is generated and sent to excitation coils, voltage induced in the excitation coil is amplified, and thickness of the pipeline wall is determined on the basis of the complex amplitude. Periodically they measure thickness of the pipeline wall, the produced values are compared to previously accumulated and produced as a result of modelling. As a result of regression treatment they predict time of pipeline thinning to the limit value, and monitor variation of observation conditions and correct measured parameters. The device comprises an excitation generator, a unit of measurement converters, including excitation and measurement coils, an amplifier. The device is equipped with a band-pass filter, a digital temperature sensor, arranged in close proximity to any excitation coil on the surface of the pipeline, a digital calculator, comprising a central processor, main and permanent memories, an analogue-digital converter and an input-output port. |
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Evaporator of cryogenic liquid Invention relates to the field of heat and power engineering and may be used to evaporate media in liquid state. An evaporator of cryogenic liquid comprises a body, in which there are heat exchange elements and a heater. The body is made in the form of two double-layer shells, forming a circular cavity for passage of heating coolant. Each shell comprises two rigidly joined shells, between which there are channels combined into headers for supply and drain of a cryogenic component. At the inlet to the circular cavity there is a cover, where mixing elements and an igniting device are installed. At the outlet there is a gas duct. Body shells comprise a cylindrical part and a narrowing conic part to form a circular cavity with channels for passage of the cryogenic component. Ribs that form channels for passage of the cryogenic component in the inner shell are made on the inner surface of the cylindrical part of the external shell, at the same time on the narrowing part of the shell the specified ribs are made on the outer surface of the internal narrowing part of the shell. Inside the conical part in its central zone there is a nozzle connected with the cavity of the internal shell. Headers for supply and drain of the cryogenic component into the inner cavity of the external shell are installed on the narrowing part of the external shell. |
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Contact area of auxiliary membrane for liquefied natural gas tank Invention relates to production of tight and heat-isolated tans built in load-bearing structure. Container for liquefied natural gas comprises load-bearing structure (11) and tight heat-isolated vessel with multiple walls secured to said structure. Every said wall has the main tight barrier, the main heat-isolating barrier, auxiliary tight barrier and auxiliary heat-isolating barrier. Said walls include at least one vertical wall with its auxiliary tight barrier including the first tight sheet at wall top section and connecting device to make a tight joint with load-bearing structure. Said connecting device comprises first metal plate (22) arranged parallel with said first tight sheet and second tight sheet (17) secured to first sheet on one side and, on opposite side, to said first metal plate. |
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Station for transfer and separation of multiphase mix Proposed station is intended for collection and transfer of water-gas-oil production of oil wells at one-pipe transfer to oil collection and preparation station. This station comprises manifold 1, hole pumps 2, 3, 4, water-jet pumps 5, 6, 7, separator 8, measuring unit 9, drain vessel 10, outlet pressure pipe 11, flare line 12, stations 13 of connection of calibration-check unit, shutoff elements 14-38, check valves 39-45, safety valve 46, cock 47 with control of leaks. |
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Invention relates to refrigerating equipment, namely, to the field of design and operation of compression thermal devices. A thermal compression device comprises a source of high pressure gas with a connected compressor balloon, a source of cold and a manifold for supply of gas to a consumer equipped with a heat exchanger-cooler. The compressor-balloon is equipped with external heat protection and a heat exchanger made in the form of a pipe coil, placed in the inner cavity of the compressor-balloon and connected at the inlet to the source of cold, and at the outlet - to a spiral channel of a cooled screen made in the form of a jacket with a spiral partition. The pipe coil is installed with a thermal contact with a wall of the compressor balloon, and the cooled screen - with a clearance to the wall of the compressor balloon. The compressor-balloon is additionally equipped with an electric heater placed in the specified clearance and fixed with the thermal contact on the external surface of the compressor balloon wall. |
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Invention relates to fluid samples to be used in gas and oil industry enterprises. Proposed device comprises sampling and bypass sections mounted on the main pipeline by flanges and fluid flow shutoff system with common shaft and control lever, sampling valve and pressure gage. Note here that fluid flow shutoff system is composed by three two-way ball valves interconnected by common control system to shutoff sections in turns while detachable sampling section allows connection of processing equipment without changing of pipeline operating conditions. |
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Heat insulation of tank for transportation of liquefied natural gas Invention relates to ship building, particularly to ship cargo compartments for transportation of liquefied natural gas at low temperatures. Proposed heat insulation represents one or several evacuated shells accommodating powder filler. Note here that every said shell ensures heat protection of one or several ship compartment walls. |
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In the application sealed reservoir (1) is described containing load-bearing structure (4), sealed barrier of cylindrical shape, where sealed barrier forms vertical wall (2) and bottom (3). The vertical wall contains variety of vertical panels (8, 8'). The load-bearing structure envelopes the vertical wall, and bottom contains variety of right-angled components (5) forming similar but reverted sectors, at that edges of right-angled components of one sector are parallel and perpendicular to one of vertical panels (8). The number of vertical panels is twice more that the number of sectors. |
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Water treatment device with flow rate controller and filter assy Proposed device and filter are intended for water treatment. Device (1) comprises water flow rate controller (2). Note here that aid controller (2) comprises throttle (6) and leak-proof device (12) communicated with throttle (6) to interrupt the flow when pressure difference between throttle inlet and outlet is lower than preset magnitude. It includes water filter (34) and flow adder (28, 29) to add water flow downstream of water filter (34). Note also that water filter (34) communicates with throttle (6, 36) to constrict water flow rate through filter (34) at preset time interval. |
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Boss of high pressure vessel and section of its coupling with lining Invention relates to high pressure vessels for placement of various fluid media under pressure. A boss for a high pressure vessel has a flange. The specified flange has an outer side and an inner side. Besides, the boss comprises an inner mounting slot and multiple channels. The specified mounting slot is placed on the specified internal side and has an inner side wall. Multiple channels are placed in the specified inner side wall. Besides, channels do not communicate with the outer side. Also versions are described for execution of a high-pressure vessel, as well as the method for execution of a high-pressure vessel. |
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Method to determine coordinates of place of underwater pipeline break Invention belongs, mainly, to the oil and gas industry and, in particular, to area of pipeline transport of hydrocarbons. In the damaged pipeline they pump a foam substance solution based on fresh or sea water with formation of a steady rough-dispersed gas emulsion with the size of bubbles providing for constant speed of their emerging from depth of placement of the underwater pipeline on a surface of the water and not subject to coalescense. They determine coordinates of a place of a pipeline break by coordinates of the local zone, which appeared on the water surface - "marks" with obviously expressed characteristics of the water surface, distinct from surrounding surface of the water, taking into account benthonic and superficial currents in a zone of emergence of the "mark" by analytical dependences. |
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Cryogenic liquid heating method Invention relates to heat engineering and can be used for evaporation of media that are in a liquid state. The invention proposes a cryogenic liquid heating method consisting in passage of liquid through heat exchange elements with heat supply to them. A cryogenic liquid evaporator housing is made in the form of at least two two-layered covers, internal and external ones, so that an annular cavity for passage of heating heat carrier is formed. Each cover is made so that it consists of two shells rigidly attached to each other, between which channels for passage of a cryogenic component are formed, and which are combined into headers. Cryogenic liquid is supplied to an inner cavity of the internal cover from the header and discharged through a connection pipe installed in the central part of the internal cover. Cryogenic liquid is supplied to the inner cavity of the external cover from the header located on a convergent part of the external cover; at that, it is supplied so that filled channels are uniformly alternated with empty ones; with that, cryogenic liquid is passed through the whole cover; then, it is turned in the initial part of the cylindrical cover and returned to an outlet header located in the convergent part through the rest part of the channels. |
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Marker consists of two marking straps made of ferromagnetic material and namely of pre-magnetised compound material with high plasticity properties; the straps are installed on top of a pipeline at a certain gap between them. The marker contains marks with reference index. The straps are fixed due to magnet forces interaction between the strap and steel pipe and the mark with reference index is placed to the ground when the pipeline is covered by earth. |
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Generator for gasification of compressed natural gas and delivery of gaseous product to consumers Invention is related to gas industry, in particular, to testing of gas-compressor units based on aircraft engines. Generator for gasification of compressed natural gas and delivery of gaseous product to consumers contains at least two interconnected high-pressure gasifiers, which cavities are connected to devices of gaseous product extraction and delivery to trunk pipeline delivering gaseous products to consumers. Each gasifier is equipped with heating element and pressure control device connected to it and operated in compliance with dependence of pressure of natural gas in enclosed volume on temperature and degree of the gasifier filling by liquefied natural gas β. |
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Method of making high-pressure welded vessels Invention relates to production of high-pressure welded vessels. Shell is made by coiling the blank with jointing of edges at welding appliances, clamping the edges with the help of auxiliary plates, automatic welding, gaging over shell ID and X-ray TV quality control of the weld. Bottoms are made by drawing of forged piece circles or by combined drawing from said circle via projection, multipass rotary drawing and burnishing to produce cylindrical and spherical parts. Then, unions and valves are welded to said shell and bottoms. Remaining straps are welded to bottoms in interrupted seams. Now, shell is assembled and automatically welded to bottoms by butt circular seams and subjected to ID and X-ray TV quality control. Finally, support and transportation elements are welded to the vessel and tested for tightness. |
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High-pressure cylinder made of metal composite Proposed cylinder consists of liner 1 and outer structural composite shell 2. Said liner comprises upper bottom 4 with longer neck 5, mid cylindrical part 5 and lower bottom 7 with element 8 intended for symmetric laying of helical layers in cylinder reinforcement. ID d1 of longer neck 5 is increased to make at least half the ID d2 of the liner mid cylindrical part 6. Element 8 intended for symmetric laying of helical layers in cylinder reinforcement is composed of neck with part-through bore 12, diametre d3 of bore 12 being equal to ID d1 of neck 5. Grooves 13 are made at the end of element 8, at its bottom part. |
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Underground liquefied natural gas storage Proposed storage comprises reinforced concrete tank mounted on the bed of compacted soil and heat-isolation layer and having vertical sidewalls, said being surrounded by pliable layer at outer side surface and heat- and water-insulated from liquefied natural gas. Storage shaft is equipped with pipelines to fill said storage with said gas and its vapors and to discharge the latter therefrom. Said shaft extending from reinforced concrete tank to surface is equipped with tight hatches and staircase. Tank top is buried in the heat-insulation material layer. Note here that tank top features cross-section decreasing towards earth surface and is shaped to truncated cone and connected with said shaft by sealed flange joint. Aid tank top with flange joint are arranged at decreased spacing from frozen soil bottom surface. |
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Thermocompression device comprises a source of gas of high pressure with a connected cylinder-compressor, a source of cold and a manifold of coolant pumping. The cylinder-compressor is equipped with external heat protection and a heat exchanger made in the form of a tubular coil placed in the inner cavity of the cylinder-compressor and attached to its wall with provision of thermal contact. At the inlet to the tubular coil there are parallel connected start-up and cut-off devices, and by means of the cold line via the first start-up and cut-off device the tubular coil is connected to the source of cold, and via the second start-up and cut-off device - to the manifold of coolant pumping. The tubular coil is connected at the outlet to a thermal screen installed in layers of heat insulation. The coolant pumping manifold is equipped with a heater installed at the inlet to the tubular coil upstream the second start-up and cut-off device. |
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Thermocompression device comprises a source of high pressure gas with connected cylinders-compressors, connected in parallel into a combined manifold for charging of cylinders-compressors and supply of gas to a consumer at the inlet to a heat-exchanger-cooler and also a source of cold. Each cylinder-compressor is made in the form of a thermally insulated double-wall reservoir with ribbing of the internal vessel located in the wall-to-wall cavity. The wall-to-wall cavity of each thermally insulated double-wall reservoir is connected directly to the common source of cold made in the form of a Dewar flask with liquid nitrogen. In each thermally insulated double-wall reservoir the internal vessel is equipped with an autonomous heater, made in the form of an electric heater from carbon cloth, fixed on the outer wall of the inner vessel and connected to the outer source of power supply. Valves are connected into the combined manifold, installed accordingly at the outlet (inlet) of the high-pressure gas source, of each cylinder-compressor and heat-exchanger-cooler. |
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Method and system for supercooling of produced hydrocarbon fluid for transportation System for production of a suspension of solid particles and produced fluid from an underwater well includes the following: a pump with an inlet hole and an outlet hole; a bypass pipeline, which connects the outlet hole of the pump and the inlet hole of the pump, made to drain a part of the flow from the outlet hole of the pump; a cooling device arranged in the bypass pipeline and made as capable of cooling the produced fluid inside the cooling device to the temperature, under which hydrates may precipitate from the produced fluid, to produce the suspension of hydrate particles and the produced fluid, and control and measurement equipment made as capable to adjust the flow via the bypass pipeline on the basis of the signal corresponding to at least one characteristic of the suspension. |
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Proposed device comprises high-pressure gas source with compressor flask composed by heat-insulated two-wall vessel with ribbed inner vessel arranged between walls of two-wall vessel connected to compressor flask heat cycling device, and heat carrier pumping line. Said compressor flask heat cycling device is composed of twisted tubular heat exchanger making a helical coil ad modum "pipe-in-pipe". Outer ribbing is made on heat exchanger inner pipe coiled at pitch h and soldered thereto to make helical channel for coolant in annular space. Inner pipe is connected to heat carrier pumping circuit while said annular space is communicated with coolant feed line. Tubular heat exchanger is equipped with heater and arranged in heat protection casing. |
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Method of underground gas storage abandonment Proposed method comprises extraction of gas active amount and gas buffer amount. Gas buffer amount is extracted unless its complete displacement by carbon dioxide or nitrogen injected at constant overpressure. Gas buffer amount is extracted by gas storage stationary compressor units while injection of carbon dioxide or nitrogen is made by mobile compressor units. |
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Control method of leaks of pipelines of process tunnel Method involves measurement of liquid level in a controlled compartment of a tunnel, which is made in its lower part, by means of vibration sensors of limit liquid level, which are installed on a vertically oriented support located close to end sections of protective casings of pipelines. Vibration sensors are arranged on the support by means of fasteners one above another, and an emergency leak discharge tray is made opposite the support. |
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Gas pressure reducer (versions) Gas supply system forms an external profile; with that, the above gas pressure reducer includes a lot of elements located so that the sufficient part of elements of the gas pressure reducer is located inside the gas supply system profile. A lot of elements include a housing forming the front section and opposite side sections, the first gas pressure indicator fixed on lower end of the front section of the housing, the second gas pressure indicator fixed on upper end of the front section of the housing; and a pressure adjustment handle installed on one of the side sections of the housing. |
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Cryogenic liquid injector includes a cryogenic liquid inlet assembly, a cryoreservoir and a cryogenic liquid outlet assembly. The inlet assembly includes a nozzle with an external thread, which has a channel along the axis, which is connected through a capillary to a compressed gas bottle, a transition branch pipe with a thread on inner surface for screwing of the nozzle and with through axisymmetrical holes; with that, the nozzle can have two positions: a) holes are covered and cryogenic liquid does not enter the cryoreservoir; b) holes are open and cryogenic liquid enters the cryoreservoir, and a pipeline attaching the inlet assembly to the cryoreservoir. The outlet assembly includes a discharge pipeline with a coupling and a flange with a membrane in the form of a disc, which is pressed to the outlet hole of the cryoreservoir by means of a washer plate, the inner diameter of which is chosen depending on the value of pressure required for membrane rupture, and a hold-down nut. Helium or liquid nitrogen is used as compressed gas. Liquid methane is used as cryogenic liquid. |
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Bushing for high-pressure bottles, and its manufacturing method Invention refers to bushing (4) for a high-pressure bottle and to a method of its attachment to the bottle. The bushing consists of two elements attached to each other, which can be combined into single structure (3) of the bottle itself, which is formed from composite material, metal alloy, synthetic material, resins and reinforcing fibres. Internal removable element (4.2) of neck (4) represents in its inner part a hexagonal through hole (9) while the upper part represents a thread for attachment of a valve or a plug; on the upper outer part an arrangement is made for a thread for connection to external element (4.9) while on the lower part there is a ring-shaped seat to receive seal (5) in direct contact with core (2). Similar seal (5) is provided on external element (4.9). The end part of core (2) is fixed between two elements (4.2) and (4.9) on the lower part; after that, this assembly is combined on the outer side into many winding layers made from reinforcing fibres and synthetic resins. |
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Longitudinal ventilation ducts of high-pressure vessel Invention proposes high-pressure vessel (10) having the first end (14) with the first thickening (16) and cylindrical section (30). Vessel (10) includes internal lining (20), composite cover (18) located above internal lining (20) and the first longitudinal ventilation duct (22) located between internal lining (20) and composite cover (18). The first longitudinal ventilation duct (22) includes elongated element (23, 23', 23") forming the ventilation duct and is continued at least from cylindrical section (30) of the vessel to the first thickening (16); besides, the end of the first longitudinal duct is located along the neck of the thickening and opens to atmosphere. |
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Fluid medium system containing the main supply pipeline and at least one secondary pipeline branching from it and leasing to consumers is characterised by the fact that the main supply pipeline has at least one connection unit introduced to it, which includes the main supply flow passage forming a section of the main supply pipeline, and that the flow unit is introduced on the side, preferably at a right angle relative to the main supply flow passage, to the hole of the connection unit, which includes at least one secondary flow passage, with which there provided is possibility of connection of the secondary pipeline, and a flow resistance element, which protrudes to the main supply flow passage. |
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Gas pressure reducer (versions) Present invention proposes a compact and strong gas pressure reducer to be used with a gas supply system; with that, one of the gas pressure reducer shapes is adapted to be fixed on a bottle. The gas pressure reducer includes a housing forming the front section and opposite side sections, the first gas pressure indicator fixed on lower end of the front section of the housing and the second gas pressure indicator fixed on upper end of the front section of the housing. The first gas pressure indicator and the second gas pressure indicator are installed vertically one above another. A pressure adjustment handle is fixed on one of the side sections of the housing and located horizontally relative to longitudinal axis of the compressed gas bottle. |
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Device for natural gas delivery Device contains trunk pipeline, means for delivery of pre-treated gas under pressure and means for additional influence on stream of transported gas which are distributed at pipeline sections. Gas hydrate and water pulp with content of gas hydrate in transported gas up to 50% of its volume is used as pre-treated gas; at that particle of gas hydrate are equal to 3-5 mm. Pipeline has functions to support thermodynamic modes excluding decomposition of gas hydrate. Along the pipeline length there are distributed heating units containing inductors capable to heat pipeline perimetre up to the temperature that ensures heating of stream of gas hydrate and water pulp in its surface layer. |
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Shear-resistant ledge of high-pressure vessel and shell interface element High-pressure vessel comprises composite shell, metallic ledge making the channel in said shell and including the neck and interface element. Said interface element is arranged between composite shell and said ledge. Note here that said interface element is not connected with said composite shell nor with said ledge. This allows displacement between interface element and composite shell and between interface element and ledge. Note also that interface element comprises neck abutting on ledge neck. Note that interface element comprises material selected from the group consisting of polymer, elastomer and thermoplast with Young's modulus larger than 250 psi and smaller than 10 millions of psi. |
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Method for production, storage and decomposition of natural gas hydrates Method includes preliminary filling of a ship by ice-water mixture. Natural gas hydrates (NGH) are produced at the ship by pressure pumping of natural gas to it and further gas bubbling through ice-water mixture with simultaneous pumping of the above mixture to it and vibrating at acoustic frequency until NGH fill the whole ship volume. Thereafter pumping of gas and cryohydric mixture is stopped; NGH are stored at the ship at permanent temperature and pressure. In order to decompose NGH into water and gas pressure is decreased in the upper part of the ship by gas extraction from it and/or ship lifting to decrease hydrostatic pressure in it. When gas extraction is completed the ship is lowered to the initial depth and ice-water and cryohydric mixture is stored at the ship till next filling by NGH. |
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Charger for hydrogen accumulators based on a high passivation metal (aluminium, titanium, magnesium) hydride consists of a stabilised electric current source (1), conductors (2), an electrolysis cell (3) and hydrogen accumulators (4) based on aluminium (titanium or magnesium) hydride (5). The electrolysis cell (3) holds an electrolyte (6) of carbonic acid H2CO3 in distilled water, which completely covers two separate accumulators (4) without external housings with free penetration of the electrolyte (6) into the structure of the accumulator (4) from the metal hydride (5). One accumulator (4) is connected to the cathode (7) and the other accumulator (8) is connected to the anode. On the cover (10) of the charger there is a vertical tube (11) with a valve (12) for releasing excess pressure created by electrolysis products. |
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Liquefied hydrocarbon gas degasifying system Proposed system comprises buried tank 1 with liquefied hydrocarbon gas equipped with automatic control and safety system 9, pipeline of liquefied gas vapor phase composed of internal gas discharge pipe 2, buried gate valve 3 to shutoff soil evaporator in repair, steam superheating pipeline 4 composed of helical horizontal pipeline arranged under the depth of seasonal soil frost penetration, box-type gas control station 5 and low-pressure regulator 6 accommodated therein. Note here that said station 5 is equipped with low-pressure vapor phase gas line. |
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Tank with reinforced corrugated membrane Sealed tank has one wall including sealed membrane designed to get in contact with tank contents and flat support abutting on said membrane. Said membrane includes at least one corrugated metal sheet 1, in fact, of rectangular shape. Said sheet has first row of mutually parallel crimps 2, second row of mutually parallel crimps 3 running across those of the first row. Corrugated metal sheet contact with flat support at a distance from the crimps. Said tank has reinforcing element 5 arranged under the first row crimp between the membrane and support. Note here that the length of reinforcing element corresponds to the spacing between crimps of second row. |
Another patent 2513550.