SUBSTANCE: invention relates to construction, namely to high chimneys of industrial enterprises. Chimney has cross section in form of Reuleaux triangle, wherein it is installed with one of its angles opposite to direction of main vector of windrose.
EFFECT: higher stability, rigidity and degree of streamlining with wind air flows of stack structure.
1 cl, 2 dwg
SUBSTANCE: pipe is constructed in two stages: at the first stage they concrete the pipe shaft with simultaneous gradual growth of a mine hoist. At the second stage upon completion of pipe shaft concreting, partial dismantling of a working site and lowering of dismantled elements in a cargo basket to zero elevation, they separate a lifting mechanism from a tent of a device for working site lifting, on the lower beams of the tent they install diverting blocks necessary further during lining works, the lifting mechanism is lowered along the mine hoist, simultaneously they partially dismantle the mine hoist. Two cells are left: one for lifting of the cargo basket, the other one for movement of fitters along a service ladder, partial dismantling of the mine hoist and lowering of the lifting mechanism is carried out to the level of the pipe height half, further they continue lowering the lifting mechanism without dismantling of the mine hoist to zero elevation, from which they start lining works. At the distance equal to lining thickness, from the inner surface of the pipe shaft they install shields of internal sheathing and start lifting the lifting device with the suspended lining site, repeating operations of shields installation, their detachment, setting of lining and periodical lifting of the site to the level of the fully assembled mine hoist, which corresponds to installation of the lining to the half of the pipe height, at this height they disconnect the lining site from the lifting mechanism frame and suspend it on the ropes that stretch towards the diverting blocks, enveloping them and fixed on the support-shift frame of the lifting mechanism. Three rows of shields are used, besides, the lower one is the support one for the two above, and as they lay another tier of lining, the shields are shifted, and the lower one becomes the upper one. Blocks of the cargo basket are installed on the mine hoist, the lifting mechanism is lifted along a fully mounted part of the mine hoist, thus they lower the lining site downwards, from there they perform full dismantling of the partially dismantled mine hoist, and the lifting mechanism is moved to the top of the assembled mine hoist, at the same time the rope is disconnected from the lining site, which is connected to the support-shift frame of the lifting mechanism, the blocks of the cargo basket are installed on the support-shift frame, the ropes are removed from diverting blocks, and with the help of, for instance, attached hemp ropes they are lowered onto the support-shift frame of the lifting mechanism, the lifting mechanism is lowered along the assembled part of the mine shaft, which is gradually dismantled, and the dismantled elements are lowered in the cargo basket to zero elevation, at zero elevation they dismantle the lifting mechanism, via process openings at the bottom of the pipe shaft they remove the dismantled elements outside.
EFFECT: expanded range of dimension types of constructed pipes towards the possibility of their construction with higher lining thickness, with small outlet diameter and with higher ratio of the outlet diameter to the diameter in the base with lower material intensity, labour intensiveness, prime cost and increased efficiency.
2 cl, 13 dwg
SUBSTANCE: in this method to erect a stack, including installation of a reinforcement frame, assembly of external and internal form panels of a bearing reinforced concrete shaft, placement of a separating element from water-permeable material in the gap between external and internal form panels and concreting of the shaft by laying heavy concrete into the space between the external form panels of the pipe shaft and the separating element, and in the space between the separating element and the internal form panels - heat insulating concrete, in accordance with the invention during concreting of the shaft heavy concrete is laid into the space between external form panels of the pipe shaft and the separating element, and in the space between the separating element and internal form panels the heat insulating concrete is laid simultaneously, at the same time heavy and heat insulating concrete before laying is heated. Heat insulating concrete is fed for laying at temperature that is by 10-20°C higher than heavy concrete heated up to 45-55°C. In the best versions of implementation of the proposed method the separating element is a metal mesh, the size of cells of which gradually reduces in vertical direction from the base of the pipe; heavy and heat insulating concrete is fed for laying in steps along the height of the pipe with a pitch of 280-320 mm per hour and delay of at least one hour between steps.
EFFECT: simplification of the process of laying concrete into a gap between lining and a bearing shaft of a stack, reduction of its labour intensiveness and as a result higher efficiency of the process of stack erection; stabilisation of concrete strength in pipe shaft volume, as a result of which quality of solidification and strength as a whole in the produced structure of the pipe increases.
3 cl, 2 dwg
SUBSTANCE: pipe is constructed in several stages. At the first stage the pipe shaft is concreted with simultaneous section-by-section build-up of a shaft hoist. Upon completion of pipe shaft concreting the blocks of the cargo cage are rested against a shaft hoist, the working site is dismantled, elements of the tent and device for working site lifting, dimensions of which prevent passage of the device in the assembled form via the outlet diameter of the pipe shaft cut, the dismantled elements are lowered in the cargo cage along the shaft hoist. The device for lifting of the working site is lowered along the shaft hoist down, from which angular stands are dismantled with adjacent crossbars and struts, and flexible links to zero elevation, in partially dismantled angular cells of the shaft hoist they install diagonal crossbars for increasing its stiffness; at the bottom the device is fully dismantled. Movement of the self-lifting device is carried out by four specified hoists as ropes are wound or unwound from hoist drums, at the same time to increase weight-lifting capacity of hoists, the rope of each hoist is directed to the assembly block and is returned to the self-lifting device on the frame. The assembly block with its hook with a latch is suspended onto a ring of a double-branch chain sling, each branch of which is fixed on a quick-detachable yoke, installed on the coupling of the shaft hoist stand. A lining site is suspended to the self-lifting device, from which heat insulation, lining works are performed, as well as anti-corrosion protection. When arranging another layer of lining, during lifting of the self-lifting device they restore flexible links and angular stands, and adjacent crossbars and struts under the lining site. When lowering the device, to prepare for arrangement of another layer under the lining site they dismantle angular stands, crossbars, struts and flexible links. After lining the blocks of the cargo cage are fixed on the cut of the pipe shaft. Cells of the shaft hoist are covered by shields installed onto crossbars, from which it is dismantled to zero elevation. Afterwards the self-lifting device is dismantled.
EFFECT: reduced metal intensity, labour intensiveness, higher quality of works and safety of labour, improved labour conditions.
4 cl, 9 dwg
SUBSTANCE: invention related to the field of caps for flues. A cap for a flue comprises: a body made as capable of covering at least the upper part of the flue and comprising an expansion chamber, where emissions arrive from the upper part of the flue, a diffuser for scattering of emissions from the upper part of the flue into the expansion chamber, at least one air inlet hole made as capable of air sending through it into the expansion chamber, at least one outlet hole made as capable of air discharge from it or emissions discharge from the expansion chamber. The body is arranged so that emissions released from the upper part of the flue are diffused and expanded, arriving to the expansion chamber, and inside the body there is lower pressure pulled for draught of emissions from the upper part of the flue into the expansion chamber.
EFFECT: development of lower pressure in a flue channel, reduced quantity of emissions.
17 cl, 4 dwg
FIELD: power engineering.
SUBSTANCE: energy-saving device for cleaning of smoke gases of a group of heat generators of apartment heating systems comprises a box laid onto the upper slab of the building, made from a corrosion-resistant material, the bottom of which is equipped with holes connected with pipes of individual flues and sewage drains and connected on the opposite edges with atmosphere via flues with deflectors, besides, each flue at the rear side is equipped with a door, inside it there are rows of vertical perforated cassettes opened on top, forming vertical gas channels between each other, vertical perforated cassettes are made from a corrosion-resistant material, their cavities are filled with an adsorbent - granules of pumice made from metallurgical slags with lime factor M>1 and diameter of granules from 5 to 10 mm, the bottom of the box is made with inclination I towards sewage risers, and upper edges of pipes of individual flues are arranged above the level of the bottom of the box by the value of δ.
EFFECT: higher reliability and efficiency of an energy-saving device for cleaning of smoke gases of a group of heat generators of apartment heating systems.
SUBSTANCE: anti-corrosion dust-collecting power-saving pipe includes a pipe shaft. On the inner surface of the pipe shaft there is a spiral of working space with an angle of lifting of 10-80 degrees, and on the outer surface of the pipe shaft base there is an outlet of a bent flue connected with the working space spiral. The direction of the spiral of the bent flue matches the direction of the working space spiral, and the bent flue is smoothly connected with the spiral of the working space.
EFFECT: increased structural strength, improved protection of environment, extended service life and reduction of costs.
4 cl, 3 dwg
SUBSTANCE: smoke stack module has pipe-in-pipe design and comprises an external metal bore and an inner metal gas relief pipe, the gap between which is filled with a heat insulation material, at least two gaskets tightly closing the specified gap on the top and bottom, and a support accessory arranged at the bottom of the module. The heat insulation material does not expand during heating, the outer side surface of gaskets has the shape of the inner surface of the external bore, the internal side surface of the gaskets has a shape of the external surface of the gas relief pipe, the height of gaskets makes 0.01-0.15 of the gas relief pipe height, gaskets are made of a solid heat insulation material, the heat conductivity coefficient is close to the heat conductivity coefficient of the heat insulation material, the external metal bore is made in the form of a hollow part of alternating section, and the metal gas relief pipe is made in the form of a truncated cone, besides, they are installed with narrowed parts in opposite directions and are equipped with limiters. Also the versions of the smoke stack module are described.
EFFECT: increased reliability and increased service life of a smoke stack module and a stack assembled from such modules.
73 cl, 1 tbl, 9 dwg
SUBSTANCE: method to dismantle a smoke stack consists in the fact that in a bearing shaft of a smoke stack through niches are punched, and the dismantled stack is rested on wooden bars arranged in niches, afterwards partitions between niches are removed with simultaneous burning of wooden bars. In the sector of pipe parts falling they dig at least two trenches arranged at the angle from 30 to 90 degrees to the bisector of the pipe falling sector, and between trenches they lay soil or another shock-absorbing material, and the smoke stack itself is separated at least into two separate parts, and at the side of the direction of falling dismantled parts of the smoke stack, in the section of parts separation, they punch through niches with height of not less than half of the radius of the pipe section and length of not less than half of the perimetre of the section, and dismantled parts of the pipe in the place of niches punching are rested against wooden bars, bars are laid horizontally, and the dismantled parts of the smoke stack subject to simultaneous cutting are inclined in the direction of falling by the angle of at least one degree, relative to the vertical axis of the lower part of the pipe, and at the side of falling direction the pipe parts are left connected between each other with metal elements or ropes, and at the side opposite to the falling direction, in the section of separation of parts of the smoke stack, reinforcement and other binding elements are cut fully from one third to three fourths of the separating section perimetre.
EFFECT: increased safety of smoke stacks dismantling, reduced seismic load, increased accuracy of falling of dismantled parts of a pipe, reduced cost and timing of dismantling.
SUBSTANCE: invention relates to construction of high-rise reinforced concrete chimney-stacks and towers. Proposed method consists in using multi-cage mine hoist to rise concrete mix and reinforcements into area of their packing. Besides it includes rising riggers by cargo-and-passenger lifter arranged in one of the cages of said mine hoist to working area. Also it includes displacing working platform by lifter embracing said mine hoist from outside to work at different decks. This method uses external lifting travelling shuttering mounted on supports recurred and rearranged in lifting at embedded anchors. External and internal boards feature large-block unified design to be lifted by pulley blocks mounted on circular monorails arranged at mounting platform of lifter. Said boards are displaced from concrete surface to distance friendly for cleaning and lubrication. Compensation boards are arranged between internal and external boards. Note here that said compensation boards are suspended to beams of working platform to lift them therewith and to move them away from concrete by pull-off device arranged at working platform beams. Said compensation boards displace over rollers on working platform beam. Boards are centred and braced together. After laying concrete in moulds and concrete hardening, vertical reinforcements are mounted from special platform while horizontal reinforcements are fitted in place from working platform.
EFFECT: lower costs, faster construction, higher quality and safety.
FIELD: power engineering.
SUBSTANCE: combined-cycle plant of a power facility comprises a gas-turbine plant, a heat-recovery boiler, a steam-turbine plant, a wasteheat exchanger for exhaust gases, a circulation water supply system. The gas-turbine plant comprises a gas turbine, a turbocompressor, a combustion chamber and a power generator. The steam-turbine plant comprises a steam turbine with a condenser, a power generator and a feed pump. The wasteheat exchanger is equipped with a condensate collector with a hydraulic lock. The circulation water supply system comprises a circulating pump, a discharge pipeline to the steam turbine condenser and the wasteheat exchanger and a drain discharge pipeline to a cooling tower, comprising a stack and a storage basin. The plant additionally includes a pipeline, which connects the wasteheat exchanger with a distribution device installed in the cooling tower stack. The distribution device comprises several circular perforated headers of alternate cross section connected to each other by means of a nozzle, for even mixing of exhaust gases with a heated atmospheric air moving in the cooling tower stack and their discharge to the atmosphere.
EFFECT: no necessity to erect and operate a flue stack, which increases plant efficiency.
FIELD: building, particularly for industrial chimneys construction and reconstruction.
SUBSTANCE: chimney comprises load-carrying latticed metal frame and gas-escape channel secured in frame. Gas-escape channel is composed of separate tubular sections along the full length thereof and is provided with sliding compensators connected with load-bearing frame and dividing channel into separate side-bars. Sliding compensators provide holding side-bars in axial direction during chimney assemblage. Gas-escape channel is formed in element-wise manner of multilayer panels produced of polyolefin. When connected in tubular sections panels create polyhedral side surface provided with support flanges arranged along the full perimeter thereof for sections connection one to another with side-bars forming. Support flanges have L-shaped extensions forming funnels in which lower part of another section is inserted. Support flange positions in lower section parts are adjusted along L-shaped extension height.
EFFECT: increased service life, economy and operational reliability along with reduced cost of chimney construction.
1 cl, 5 dwg
FIELD: building, particularly chimneys for atomic plant stations and nuclear fuel processing plants to periodic drain air after cleaning thereof from radioactive and hazardous materials by filtering air and to provide emergency effluent of above substances in gaseous and aerosol state.
SUBSTANCE: chimney comprises shell-shaped head and main annular plate secured to shell. Head is provided with connection pipe coaxial to head so that a gap is formed in-between. Head has additional annular plate secured over main annular plate. Formed between main and additional plates is chamber communicating chimney hollow with atmosphere. Lower annular plate has edge bent upwards.
EFFECT: increased reliability of radioactive and hazardous substances effluent due to dissipating thereof under windless conditions, provision of air cavity disturbing at chimney head under windy conditions and, as a result, prevention or minimizing of radioactive gas concentration in chimney during normal operation and additional dissipation of above substances during emergency effluent thereof.
2 cl, 4 dwg
FIELD: chimney production, assemblage, repair and reconstruction, particularly for large chimneys having diameter of not less than 4 m at chimney base.
SUBSTANCE: chimney shaft to be arranged in sections inside chimney has relieving means to unload shaft sections of lower section weights. Relieving means is mounted along chimney height by connecting each detachable section with cylindrical pipes or rods. Each transversal dimension of cylindrical pipes is 75-250 times less than chimney diameter and preferably is equal to 50-80 mm. Transversal dimension of rods is 250-700 times less than chimney diameter and preferably is equal to 15-50 mm. Cylindrical pipes and/or rods are located in shaft hollow in parallel to axis thereof from outer shaft axis and/or inside chimney walls. Pipes and/or rods are connected to chimney in upper part thereof and take all weight of shaft sections. Method of chimney repair with the use of above shaft is also disclosed.
EFFECT: reduced labor inputs for chimney production, transportation and assemblage, increased erection rate, reduced material consumption, improved maintainability.
8 cl, 14 dwg
FIELD: building, particularly for erecting electric power station chimney.
SUBSTANCE: method involves supplying air heated in air heater into air chimney duct formed between reinforced concrete shaft and lining defining gas vent duct; ejecting fuel gases moving through gas vent duct into upper atmosphere; directing heated air at the first through one part of air duct in bottom-top direction and then through another part thereof in top-bottom direction through annular box; supplying heated area to inlet box of air heater; admixing cold air to heated air to compensate air losses; moving the mixture of cold and heated air into air heater to increase air temperature and repeated supplying heated air to air chimney duct.
EFFECT: increased chimney operational efficiency.
1 cl, 2 dwg
FIELD: building, particularly tall building structures, adapted, for instance, to construct chimneys of heat power plants, industrial boilers and exhaust gas discharge facilities.
SUBSTANCE: chimney comprises chimney base, load-carrying shaft, gas duct arranged inside the load-carrying shaft and foundation for chimney supporting. The gas duct is fixedly connected to the base and has free end part projecting over load-bearing shaft top.
EFFECT: simplified structure and increased operational reliability.
4 cl, 2 dwg
FIELD: building, particularly to erect load-bearing chimneys and ventilation ducts.
SUBSTANCE: method involves layered chimney sections assemblage with the use of pulley-and-cable load hoisting system, which lifts load by means of at least two cranes to be installed on chimney sections. Chimney section is assembled of vertical members, which are inserted through chimney interior by alternately installing each member from each crane side. Then cranes are moved by mutual lifting thereof with the use of pulley-and-cable load hoisting system.
EFFECT: possibility to erect load-bearing building structures in restricted space.
2 cl, 3 dwg
FIELD: combustion apparatus or combustion processes.
SUBSTANCE: boiling pant comprises chimney with air duct interposed between the load-bearing ferroconcrete shaft and lining that define a gas discharging passage, and heat exchanger for heating air and fan for supplying heater air to the air passage of the chimney that underlie the gas discharging passage of the chimney. The air duct is separated into two section by two vertical baffles. The vertical baffles have openings through which heated air flows from one of the sections of the air duct of the chimney to the other section.
EFFECT: enhanced efficiency.
FIELD: heat power engineering.
SUBSTANCE: boiler plant comprises boiler whose gas duct is connected with the chimney provided with ventilated air space between the load-bearing ferroconcrete shaft and lining that defines the gas discharging passage, heat exchanger for heating air, and fan for supplying air heated in the heat exchanger to the ventilated air space in the chimney. The heat exchanger and fan underlies the gas discharging passage of the chimney. The lining and the load-bearing shaft of the chimney are provided with inlet and outlet ports. The boiler plant is additionally provided with the duct for discharging heated air from the space of the chimney to the boiler for burning fuel. The discharging duct is composed of several sections. The ring section of the duct with varying width bounds the chimney from above at a level of outlet ports and is connected with the straight section of the duct mounted on the outer side of the chimney.
EFFECT: enhanced efficiency.
SUBSTANCE: invention relates to high structures and buildings construction technologies including smoke chimneys, exhaust stacks and method of their production. The production method for chimney exhaust channel from composite material provides for the chimney producing in the form of diffuser. For this purpose, the reinforced metal mesh is installed inside the supporting channel of smoke chimney. Then, ceramic slurry is applied from the both sides of the chimney. After that, the chimney is heated to sintering temperature by gas burner flame creating glass enamel layer. Above enamel layer, the reinforced mesh with cell size from 0.5 to 3.5 mm is again laid down. Each layer is enameled until the required thickness of gas removal channel is achieved. After that, protective brick lining layer is made from the internal side of the chimney. The invention also describes gas removal channel produced according to the above-described method.
EFFECT: improved strength of gas removal channel due to chemical, abrasive and temperature stability improvement.
2 cl, 1 dwg
SUBSTANCE: invention relates to construction technologies and may be used in gas removal channel structures of smoke chimney, and particularly, in channel structures made of composite materials. The technical result of the invention is the simplification of gas removal channel design, wider operational characteristics and improvement of maintainability. Gas removal channel of smoke chimney consists of the panels with side edges directed outside. The side edges are arranged as annular bands along chimney height. The side edges are made of composite material based on the manufactured reinforcing fiber and polymer binder. The gas removal channel also consists of mechanical fastening elements for panels fixing to each other. The channel panels are made curvilinear or flat. The flat panels are rigid, each of them is provided with additional jointing end edges directed perpendicular and outside until it joins jointing side edges. Thus, closed trough-shaped structure is formed. Mechanical fasteners are located in holes of all edges. In addition, each panel is provided with, at least, one stiffening rib being outside or inside between the jointing end edges and represented with glass-fiber-reinforced moulding profile from composite material.
EFFECT: simplification of gas removal channel design, wider operational characteristics and improvement of maintainability.
24 cl, 3 dwg