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Russian patents in English sorted by IPC

A - HUMAN NECESSITIES
(85779)
B - PERFORMING OPERATIONS; TRANSPORTING
(50058)
C - CHEMISTRY; METALLURGY
(53076)
D - TEXTILES; PAPER
(2904)
E - FIXED CONSTRUCTIONS
(17988)
F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
(31653)
G - PHYSICS
(39346)
H - ELECTRICITY
(25819)

Method for development of oil deposits in bazhenov formation

Invention refers to oil producing industry. It ensures increase in efficiency of development of oil deposits in Bazhenov formation. The concept of the invention is as follows: according to the method producing and injection wells are drilled and methane-containing gas, associated petroleum gas or natural gas is injected into the formation with observation of a process sequence with alternating cycles and each cycle includes three stages. At the first stage gas is injected into an injection well within T1 time during which formation pressure is increased, liquid hydrocarbons are dissolved and their bound state in kerogen-containing matrix is released. After T1 time, at the second stage, the injection and producing wells are withhold within a period of time (T2-T1) for further dissolving of the above hydrocarbons and balancing of formation pressure accompanied by further gas penetration to low-permeable kerogen-containing matrix. At the third stage producing wells are put into operation for the period of time (T3-T2). Thereafter process of gas pumping is started again to the injection well. Time T1 is accepted equal to about 1-3 months and duration of the period (T2-T1) is set on the basis of field researches on condition of maximizing of accumulated oil production by producing wells by time point T2. Time point T3 corresponds to the instant when rate of the oil producing well reaches unprofitable value, for example 3 t/day.

Oil deposit development method

Oil deposit development method

Direction of reservoir-scale fractures is determined, the formation is drilled by vertical and/or inclined wells and downhole splitters as per square grid pattern and five-spot system is formed with drilling in the centre and corners of the system elements by vertical and/or inclined wells and drilling between the central and corner wells in the development pattern of downhole producing splitter with rounded borehole ending, and working fluid injection through injection wells and product recovery through producing wells. If producing wells are flooded the water-flooding interval is identified and water-flooded intervals are isolated. According to the invention, before drilling of the formation sections with total oil-filled thickness of more than 6 m are determined in carbonate reservoirs and/or sections with net oil thickness of 2 m at least in oil zone and at least 4 m in water-oil zone in terrigenous reservoirs. At these sections before drilling of downhole producing splitter direction of reservoir-scale fractures is specified. The downhole splitter is made with semi-ellipse shape which major axis is directed at angle of 30-60° to direction of reservoir-scale fractures with ratio of minor semi-axis to the major semi-axis equal to 0.1-0.8. At that boreholes of producing downhole splitters are made ascending with minimum distance in the lower part up to water-oil contact of 4 m for carbonate reservoirs and 2 m for terrigenous reservoirs and in the upper part with minimum distance of 1 m up to the roof of productive strata.

Procedure for survey of multi-hole horizontal well

Procedure for survey of multi-hole horizontal well

Invention suggests procedure for survey of the multi-hole horizontal well that includes stages of bottomhole apparatus running-in to the well, performance of hydrodynamic research and removal of a geophysical tool from the multi-hole horizontal well. At that, before bottomhole apparatus running-in, at the head of the multi-hole horizontal well a hydraulic whipstock with drill out breakable cap, metering orifice and fixing breaking pin is installed at the lower end of the pipe string. The pipe string with the hydraulic whipstock is run in with simultaneous washing up to space of the surveyed side-tracking. Herewith in process of running-in the pipe string is equipped with kick-off valves. Then excess hydraulic pressure is created in the pipe string and the string is run in into the surveyed offshoot and excess pressure in the pipe string is increased till the breaking pin is destructed and the breakable cap is disconnected from the hydraulic whipstock. Then at the well head the bottomhole apparatus is connected to a rigid cable and the apparatus is run in into the pipe string until it leaves the string and appears in the offshoot. Thereafter fluid influx is stimulated from the stratum by gas injection to tubing-casing annulus through kick-off valves and hydrodynamic research is carried out in the surveyed offshoot by the bottomhole apparatus pushing up to the bottomhole. After hydrodynamic research the rigid cable with bottomhole apparatus from the pipe string and the pipe string with hydraulic whipstock are removed in sequence.

Resilient plate element with combined damper

Resilient plate element with combined damper

Invention relates to machine building. Proposed resilient plate element has two flat resilient rings with central bore arranged coaxially. Said rings are secured in parallel horizontal planes and rigidly interconnected by two resilient elements. Said resilient elements are arranged radially in horizontal plane and in vertical plane at the angle of 10 to 80 degrees. Said resilient elements are composed of resilient round or square rods, or plate and are concaved or convexed over spherical surface. Resilient elements are secured at said rings by threaded fasteners or glued thereto. Cavities formed by said rings are filled with elasto-damping combined element made of broken solid damping material, for example, elastrons "Agat", "Antivibrat", "Schwim" with particle size of 0.5-2.0 mm filed with elastomer, for example, polyurethane.

Band-shoe brake with combined band of draw works

Band-shoe brake with combined band of draw works

Invention relates to machine building, particularly, to draw works band-shape brakes. Proposed brake comprises brake pulley on the shaft and extra brake band with friction discs and the main brake band arranged there under and brake control drive. Note here that their leading edges are secured to equaliser and crankshaft crank pin. The main brake shoe features stiffness varying in length, maximum stiffness is at place nearby band attachment to crank pin and minimum stiffness is at band free end nearby equaliser. Extra brake band narrow free end is secured by pliable ear to the main brake band at the end adjoining the crankshaft crank pins. Surfaces of the main and extra brake bands are interconnected by strong but pliable vulcanised-on layer of nanomaterial.

Artificial implant

Artificial implant

Invention refers to ophthalmomicrosurgery. Artificial eye implant contains a haptic portion and an optical portion. The optical portion consists of three series optical elements. The first optical element represents a first convex plane lens and is connected to the second optical element that represents a cylinder connected to the third optical element that represents a second convex plane lens. A convex surface of the first and second optical elements face the opposite sides, while optical axes of all the three optical elements match.

Ceramic mixture for making facing tile

Ceramic mixture for making facing tile contains, wt %: kaolin 61.0-66.0; feldspar 23.0-25.0; scrap ceramic 0.1-1.0; phosphogypsum 3.0-4.0; fine quartz sand 7.0-9.0. Heat resistance is 250°C.

Method for construction of downhole splitter and whipstock for its implementation

Method for construction of downhole splitter and whipstock for its implementation

Method lies in installation of fixing unit with a whipstock for one deflective surface in the main hole constructed up to the design depth. The fixing unit is made in the form of hydromechanical anchor with mounting seat, at that the anchor is fixed below the sidetracking space. Before sidetracking the casing pipe is penetrated by window cutting and after offshoot construction the whipstock is retrieved from the well disconnecting it from the fixing unit; auxiliary longer whipstock is run in till it interacts with the mounting seat of the anchor fixing it from rotation; before sidetracking of additional offshoot the casing pipe is penetrated by additional window with subsequent retrieval of auxiliary whipstock after construction of the second offshoot. The device for method implementation includes a whipstock run in at the pipe string and equipped with one deflective surface and connected from below by breakable elements through the crossover shoe with the fixing unit made in the form of hydromechanical anchor equipped with longwise corrugated pipe blinded from below with the shoe and a hydraulic centring skid located below the crossover shoe. At that centring skid is manufactured as a body with a gallery communicating with longwise corrugated pipe, pipe string and pushers located evenly along the perimeter and height of the body limits radial movement outside until interaction with the casing walls at excess pressure in the gallery; at the top the body is equipped with a groove for matching intrusions of the crossover shoes of the whipstock and auxiliary whipstock in order to exclude rotation and ensure their setting in preset direction.

Method for development of stratified oil deposits

Method for development of stratified oil deposits

Invention relates to oil and gas industry and can be used for development of multilayer oil deposits presented by stratified heterogeneous reservoirs including stratified heterogeneous oil strata with high partitioning. It ensures increase in oil recovery from oil stratum with layer-by-layer heterogeneity notwithstanding location of layers with high permeability in total thickness of the oil stratum. The concept of the invention is as follows: the method includes drilling of the deposit through any of known grids of producing and injection wells, oil extraction from producing wells, pumping of the working fluid through injection wells, identification of layers with high and low permeability and liquidation of hydrodynamic connection of the producing well with highly permeable layer. According to the invention producing and injection wells are drilled to the whole thickness of the deposit. In process of oil extraction flow rate of the producing wells and water content of the product are controlled. When minimum profitable oil recovery rate is reached for each producing well a geophysical study is conducted in order to define current oil content. According to results of oil saturation assessment maximum depleted layers are defined which have high permeability and current oil content as close as possible to their residual oil content. Hydrodynamic connection is liquidated for producing wells with maximum depleted layers which is detected in the process of the wells operation. Then offshoots are made to the producing wells in low-permeable layers of the oil stratum. At that a number of offshoots, their length and diameter for each producing well are determined against geological and hydrodynamic model adapted to actual operating parameters of the wells on the basis of productivity index recovery at least to its initial value and increase in sweep efficiency for the oil stratum.

Method of soil reinforcement

Method of soil reinforcement

Method of soil reinforcement may be used in strengthening and arrangement of bases with any soil conditions, in particular, weak natural bases and unsteady soils. A contour of reinforced concrete support falsework is defined, within the borders of which they install a set of at least three longitudinal hollow elements that represent a tubular-pillar falsework, and they are submerged into soil. On shore they determine the sufficient quantity of reinforcement zones. Piles are placed in each of specified elements, a reinforcement zone, under different angles to the surface of the specified support and with protrusion of each pile beyond the border of the lower perimeter of the appropriate element with formation of vectors of forces that compensate load at specified soils. Along the formed contour they assemble the falsework that covers upper heads of piles, they fill the longitudinal hollow elements with concrete and form the reinforced concrete support.

Method to repair building facade and repaired facade of building

Method to repair building facade and repaired facade of building

In the method to repair a building facade, including dismantling, of at least a part of masonry of oil facing bricks and development of new masonry of facing bricks with fixation on the bearing wall of the building, according to the invention, development of new masonry and its fixation is done by fixing anchors in the bearing wall of the building, onto which horizontal rows of reinforcement are laid, on each of which, using mortar, they lay several rows of bricks with a gap relative to the bearing wall of the building, at the same time the first and last rows of the new masonry of facing bricks are arranged with horizontal ventilation gaps in respect to the old masonry. Besides, as the masonry is fixed onto the bearing wall of the building, in the specified gap they lay mortar in the form of vertical strips that connect areas of fixation of anchors, for additional fixation of bricks and elimination of anchor corrosion.

Section of powered support of working face of thick bed with forced coal extraction

Section of powered support of working face of thick bed with forced coal extraction

Section of a powered support of a working face of a thick bed with forced coal extraction comprises a slab hingedly connected to a fence at its one side, a base hingedly connected to the fence at its other side, hydraulic props connected to the base and slab, advancing rams installed on the base. In the fence there is a rectangular opening that narrows in direction from the space behind the support to the working space of the support. At the same time the opening is closed with hydraulic jacks of cover control and is hingedly connected to the fence. In the cover in the space between hydraulic jacks of control there is a hole with the possibility of rotation in the vertical plane. Also in the cover there is a perforator, directed with an actuating element towards the opening. In the opening section there is a chute installed with vertically oriented boards and bottom. The chute is made of three metal sheets, installed in series along with the travel of transported material as overlapping each other. To the bottomhole edge of the first and second sheets there is a thick-walled scraper welded, which is oriented along the normal line to the plane of the following sheet. In the boards of the chute symmetrically to its axis, in parallel to the plane of the second sheet and below it there are slots, where fingers of the second sheet are inserted, being welded to it perpendicularly to the axis of the chute along the edges. At the bottom the second sheet is connected to the boards of the chute by means of a hydraulic jack of movement along the slots. At the same time the angle of inclination of the first sheet of the chute bottom to the horizon is more than in the second one, and in the second one - more than in the third one.

Improved method and device for supply of liquid cement paste for fibre-reinforced construction cement panels

Improved method and device for supply of liquid cement paste for fibre-reinforced construction cement panels

Invention relates to the field of construction, namely, to devices and methods for laying liquid paste onto a moving shaping web. The device comprises a discharge box installed as capable of rotation for laying of liquid paste at the inner lower surface of the discharge box from the inclined drain in the form of a continuous flowing web onto the moving web. The discharge box is installed across the direction of moving web movement. The discharge box is made with vertical edge boards, including the rear edge board of the discharge box and two opposite side edge boards, with pivots installed on the external surface of two opposite side edge boards of the discharge box, for installation of the discharge box on the appropriate opposite side walls of the conveyor for the moving web, with vertically adjusted forks and with facilities for adjustment of the angle of inclination of the discharge box up and down for adjustment of the flow of liquid paste from a drainage facility. On the external surface of at least one vertical edge board of the discharge box there is a vibrator installed.

Cartridge for intraocular lens implantation

Cartridge for intraocular lens implantation

Device comprises a hollow body. The body comprises an internal cavity consisting of four open interconnected gradually narrowing sections with the varying cross-section geometry along a longitudinal rectilinear axis. The section surfaces gradually pass into each other on condition that a first derivative is continuous. The open surface of the first section is an ellipsoid surface passing into the surface of the second section. A surface of one portion of the second section limited by a vertical plane passing through the longitudinal axis is a surface congruent to the surface of the first section; the cross-section of this portion of the second section is a half of the ellipse section. An asymmetrical surface of the second portion of the second section is a surface of conformal mapping of the second half of the first section; the cross-section of this portion of the second section is a half of the circle section. A circle diameter is equal to a minor axis of the ellipse. The second section passes into the third one. A surface of the third section is a combination of the congruent surface and the surface of conformal mapping similar to the combinations of the surfaces of the second section. The third section gradually passes into the fourth one. The surface of the fourth section being a surface congruent to the surface of the first section ends with a round outlet.

Method of ceramic ballast production

This invention relates to construction, particularly, to production of ballast to be used in construction of roads, bridges, airfields, railway tracks, etc. Proposed method comprises preparation of stock, its grinding, compaction, drying and thermal treatment. Raw mix is produced from natural sand and metallurgical slag admixtures or those of thermal electric power station slag and ash, said mix being ground and compacted at 35-150 MPa to obtain 50-150 mm deep boards. After drying, said boards are cut to cubic shape and annealed at 1100-1180°C.

Antiallergic combinations of calcium and lanthanum salts

Group of inventions refers to medicine, namely to clinical allergology, and may be used for extracorporeal allergen denaturation. That is ensured by treating a surface of objects with an allergen-denaturing composition. The composition contains calcium chloride or calcium acetate and lanthanum chloride or lanthanum nitrate in certain proportions.

Method for disposal of carbon dioxide (co<sub>2</sub>) from underground-coal-gasification-derived gas (ucg-derived gas)

Method for disposal of carbon dioxide (co2) from underground-coal-gasification-derived gas (ucg-derived gas)

Invention relates to mining and can be used for underground coal gasification. The method lies in division of CO2 received in the surface chemical complex into two flows: the first flow is injected into blast injection holes of the operating underground gas generator and endothermic chemical reaction CO2+C=2CO-q is initiated in gasification zones thus enriching UCG-derived gas with combustible CO component; the second flow of CO2 is injected into depleted underground gas generator. At that quantity of CO2 injected to the operating underground gas generator is determined depending on temperature level in gasification oxidising zone and composition of the gas extracted from the neighbouring well. Bottom-ash mass of the depleted underground gas generator is saturated with lime hydrate aqueous solution [Ca(OH)2], to that end it is injected into wells of the depleted underground gas generator until concentration of this solution is stabilised which is proven by periodical solution sampling and chemical analysis of that. When concentration of lime hydrate is stabilised in analysed samples the second CO2 flow is injected into wells of the depleted gas generator for the purpose of its chemical absorption. Injection of CO2 is stopped to the depleted gas generator when its concentration in periodic samples increases up to 90%.

Electromagnetic gravitational separator

Electromagnetic gravitational separator

Invention relates to magnetic separation with free falling material. Electromagnetic gravitational separator comprises electromagnet with polar tips, control unit, bumper (1) fitted at product duct bottom (2), jacket-pan with handle (3) that covers polar tips. said electromagnet is equipped with magnetisation coils (4) fitted on cores (5) provided with polar tips. Control unit adjusts magnetic induction at concentrators. Inclined product duct (2) is arranged at 45-70° to horizontal line. Separator comprises the set of replaceable polar tips for removal of iron inclusions. Polar tips are composed of magnetic field concentrators with round and square holes.

Three-ply panel and method of its production

Three-ply panel and method of its production

Invention relates to production of construction materials, particularly, to light three-ply boards including foamed polymer filler. Proposed board comprises top and bottom plies with filler glued in place there between. Filler reinforced discrete elements shaped to stiffness are arranged at areas to sustain increased loads. Areas reinforced with discrete elements inside shaped plies are composed of hollow cases located in definite order above bottom ply with glue layer. Invention covers also the production of said boards.

Electromagnetic lift hammer

Electromagnetic lift hammer

Invention relates to electromagnetic devices for percussion boring exploiting reciprocating hammer. Lift hammer comprises stator with excitation winding, percussion element, backstroke system and jacket. Stator consists of transverse rod carrying excitation winding and two lengthwise round-section rods with armature winding fitted thereon. Percussion element consists of hammer part, two external parts of said rods and connection webs. Said external parts of said rods feature variable cross-section the area of which equals the ratio of design magnetic flux at said section to design magnetic induction.

Telescopic mast

Telescopic mast

Telescopic mast consists of bottom stationary section, top extending section, telescoping mechanism and top section supporting and locking assy. Beams 13 with support surfaces and converging surfaces with spacing there between decreasing from bottom to top are mounted at telescopic mast bottom section top part 12 in symmetry about vertical axial plane. Beam 4 with support surfaces and lugs 7 is arranged at top section 6 lower part whereto shoes 15 are hinged by pins 16. Strut 8 is arranged at the centre of beam 4 in symmetry with axial plane. Two-arm levers 11, 9 with rollers 14, expansion spring 3, links 1 and pawl 5 are articulated with lugs of said strut with the help of pins 10. Links 1 articulate levers 11, 9 with shoes 15. Pawl 5 is articulated with lever 9 to rest on pin 2 of lever 11 by top or bottom surface. Locking proceeds as follows. Prior to lifting top section, pawl 5 is placed on pin 2 by its lower working surface. At top section lower position, spring 3 and shoes 15 press top arms of levers 11, 9 to strut 8. Shoes stay in maximum down position. At lifting the top section 6 rollers 14 get in contact with converging surfaces to make levers 11, 9 turn shoes 15 via link 1 to position approximating to closing position. Top arms of levers 11, 9 depart to make lower working surface of pawl 5 slide off the pin 2. Under gravity, pawl 5 downs on pin 2 by upper working surface. At said position top section stops to make shoes 15 hang above support surfaces of beam 13. Top section is downed to make pin 2 thrust against closing surface of pawl 5 and inhibit turn of shoes 15 by gravity. Said shoes reach the support surface to turn thereabout and to rest on support surfaces of beam 4 of top section 6. Top arms of levers 11, 9 diverge to make pawl 5 slide off pin 2 and hang on lever 9. To down the bottom section it is to be lifted to extreme top position. Shoes 15 are turned by gravity on pins 16 to pass by support surfaces of bottom section 12.

Gas well operation method

Gas well operation method

Invention relates to oil and gas industry and namely to operation of gas wells at the closing stage of development, in particular, to operation of gas wells with insufficient gas velocity for liquid export from the bottomhole. The concept of the invention is as follows: according to the method the gas well is equipped with a main production string and a concentric central production string placed in it with formation of annular space between these strings. End surface of the central production string is placed below the end surface of the main production string while gas extraction is carried out simultaneously through the central production string and the annular space. At that extraction of gas through the central production string is made with flow rate that is one and a half times higher than the rate required for liquid extraction from the well and gas flow rate through annular space is set so that it does not exceed the value of operating flow rate. In a pathway of the flow from the central production string a metre is installed and in a pathway of the flow from the annular space an automatic gas flow regulating valve is installed. Then the flows are combined and sent to the similar metre, at that electric signal of the metre installed in the flow of the central production string and the metre of the combined flow are sent to controllers of automatic control system which is used for analysis of received data; and a command is sent to the automatic gas flow regulating valve thus optimising total production rate of the well considering filtration resistance of the well in compliance with analytic expression.

Loose material separator

Loose material separator

Proposed separator comprises loading tray with grooved feed roller arranged at its outlet, it grooves being arranged around and long roller rotational axis, scraper located under the roller, deflector plate and separated product intake arranged thereunder. Said deflector is arranged under feed roller and composed of endless chain arranged at an angle to horizontal. Separated product intake is composed of rectangular box accommodating two separation plates located along the particle deflection path and in symmetry therewith. Separation baffles arranged across the particle deflection path are mounted between said separation plates. Spacing between separation plates increases as their distance from endless chain increases. Spacing between separation plates decreases as their distance from endless chain increases. Top edges of separation plates and separation baffles are made of resilient material.

Modular cooking unit

Modular cooking unit

Invention relates to modular cooking units. The modular cooking unit comprising at least two modules, each of which comprises a housing mounted on the tabletop and connected to the cooking device, such as a gas burner, an electric boiling ring or the like, at that the housing is made with the ability to rotate about an axis between the working position, in which it is on the tabletop, and the inoperative position, in which it is separated from the said tabletop, at that the cooking unit comprises a main supply line comprising an electrical power line for supplying power to the electric device, and a gas supply line for supplying gas to the gas device, at that the main electrical power line and the gas supply line are separated, respectively, into sections of electrical power line and the sections of gas supply line, the number of each of which corresponds to the number of modules of the cooking unit, at that each section is combined with one module and is connected to the section of the adjacent module, and the sections of gas supply line are made with the ability of coaxial rotation relative to each other integrally with the housing of the corresponding module. Also a method of operating the cooking unit is disclosed.

Rod tower

Rod tower

Invention relates to high-rise rod structures. The rod tower is a meshed structure made of rectilinear rods and having two systems of producing lines. The meshed structure represents a hollow truncated cone of two coaxial cone springs from rods of opposite winding, rigidly connected to each other, at least on the top and lower levels by means of horizontal rings, which rigidly connected to each other at least three equidistant rods in the angular respect for each spring separately.

Selectively sealed male needle-free connectors and related methods

Selectively sealed male needle-free connectors and related methods

Group of inventions refers to medical equipment, is applicable for fluid management and characterises a male needle-free connector, a male medical connector and a method for forming a male needle-free connector. The male needle-free connector comprises a body forming a first portion of a fluid canal, a tubular element, a sleeve and a sealing element. The tubular element in the distal direction from the first portion and forms a second portion of the fluid canal. The tubular element has a fluid opening at its distal end. The sleeve and the sealing element encloses the tubular element at least partially. The tubular element can move forward relative to the tubular element. The connector provides a closed configuration and an opened configuration. The male medical connector used together with the male needle-free connector comprises a central flow passage and a ring flow passage. The method for forming the male needle-free connector comprises forming the body forming the first portion of the fluid passage; forming the above tubular element; placing the sleeve in the pre-set position and placing the above sealing element enclosing the tubular element at least partially and moving forward relative to the tubular element.

Method of sealing by restricted gasket

Method of sealing by restricted gasket

Screw joint elements are subjected to local elastic and elastoplastic deformations. Elastoplastic sealing element is composed of metal ring gasket (4) to be arranged between the ends of casing pipes (1, 2). Gasket is pre-cooled in refrigerator, for example, in liquid nitrogen and, then, fitted in its proper place. Pipes (1, 2) are quickly screwed off to prevent fast heating of gasket (4). Note here that said gasket (4) gets in constricted position in lengthwise axis of casing. Note here that at heating said gasket expands to fill the gap between the surfaces of its location but stays contracted like a spring since the gap between surfaces being sealed inhibit its complete expansion.

Abrasive material grain classifier

Abrasive material grain classifier

Invention relates to loose material size, shape and density separation and can be used to classification of abrasive grains in production of abrasive tools. Proposed device consists of the rotor fitted on shaft and engaged with motor shaft via clutch, intake chutes, tray coupled via pipeline with pump. Besides, classifier comprises suspension mixer communicated by pipeline with pump to optimise suspension state prior to feeding to rotor and composed by mixing device, motor and valve. Tray-type intake chutes with baffle plates are arranged one above the other on bed its height being adjusted by pins. Rotor represents a composite surface in the form of flat disc nearby rotational axis and hemisphere with locating conical hole for fitting o the shaft. Rotor shaft runs in rolling bearings inserted via sleeve in bearing barrel secured with cover and motor at said bed mounted with the help of posts on the plate.

Device for protection against emergency leak in heat recovery boiler

Device for protection against emergency leak in heat recovery boiler

Invention relates to the method of protection against an emergency leak of heat recovery boilers in sulphuric acid systems. The device of protection against an emergency leak of the heat recovery boiler in the plant of sulphuric acid production includes an air blower with a unit of emergency trip of a motor, at the same time it additionally comprises a cooled bypass flue with a temperature sensor and a controller, at the same time the bypass flue is installed in any point of the gas tract of the sulphuric acid system between the outlet from the heat recovery boiler and the outlet from the gas heat exchanger after the first stage of contact, the inlet of the controller is connected with the temperature sensor of the bypass gas flue, and the outlet - with the unit of emergency trip of the air blower motor.

System for associated petroleum gas utilisation

System for associated petroleum gas utilisation

Invention relates to oil and gas industry and can be used for injection of associated petroleum gas into the formation. The system consists of a producing well, a separator, a pump with electric motor, a water supply pipeline, a gas pipeline, a mixer and an injection well and a packer with a built-in pipe. The pump, the electric motor and the mixer are located inside the injection well. The pump is installed under the electric motor which is equipped with a housing connected to the water supply pipeline. Below the mixer, over or under the packer, there is an auxiliary booster pump. The booster pump can be equipped with its own electric motor. A centrifugal pump, a displacement pump, a diagonal-flow or axial-flow pump can be used as the booster and/or main pump.

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