Kochetov fan cooling tower
FIELD: power engineering.
SUBSTANCE: invention relates to contact coolers, in particular, to cooling towers, and can be used at thermal power stations for recirculating water cooling. Fan cooling tower contains housing, spraying device, fluid collection tank and fan, wherein housing consists of two parts, upper part including sprinkler and drop separator, between which spraying device manifold with whole flare nozzles is arranged and lower part, in which cooled water collecting water sump tank is arranged with installed on it fan, wherein housing is made of thin-sheet stainless steel, and in liquid collection tank there is diffuser, which is part of housing and connected to fan, made with plastic impeller and multi-speed motor, depending on weather conditions, during operation allowing to, change of cooling tower performance due to change of air flow rate, and sprinkler is made in form of module from polymer cellular tubes layers, tubes are made cylindrical, arranged in all layers parallel to each other and welded between each other in contact points at module ends, wherein each tube cavities and intertubular space is filled with nozzle, droplet separator represents corrugated perforated sheets assembled in package, at edges fixed by frame, in form of vertical rigidly interconnected rods. Nozzle is made in form of cylindrical ring, on side, inner and outer surfaces of which screw thread is made, or in form of ball, on surface of which semi-spherical shaped blind bores are made, or in form of cylindrical ring, on side, inner surface of which partitions are fixed in form of washers with holes perpendicular to ring axis, which axes are asymmetric to ring axis, or in form of inscribable into circle unit, consisting of seven interconnected by lateral faces hexagonal parallelepipeds without upper and lower bases.
EFFECT: technical result is cooling tower performance improvement.
1 cl, 8 dwg
FIELD: power industry.
SUBSTANCE: invention relates to heat engineering, namely to chimney-type cooling towers for cooling of recycled water of industrial enterprises. A cooling tower includes a chimney in the form of a flattened pyramid or a hyperboloid of rotations. The chimney opening ends with an upper stiffening ring with railings on outer and inner sides of the chimney. Along the whole perimeter of the chimney opening there installed on the plane of the upper stiffening ring is a wind-guiding sectional device so that a solid surface can be formed, which consists of ambient air dissecting and guide flap plates located throughout the height one above another at the distance between their axial lines of 150-1000 mm to the height of 1.0-5.0 m from the upper stiffening ring; with that, an angle of position of flap plate planes to horizon is 0-80°.
EFFECT: invention allows reducing aerodynamic resistance and increasing cooling efficiency of a chimney-type cooling tower.
FIELD: power industry.
SUBSTANCE: cooling tower contains tower with installed in it water distribution system, water trap and sprinkler. In the tower bottom part there are air intake windows and basin, and butterfly dampers are installed on vertical axes in the air outlet windows. Area before each damper is divided by the vertical axis to two unequal parts, the water distribution system is made by the identical, flat, near installed water spraying sections installed under the water trap and above sprayer. The water spraying sections are connected to the water supply risers, the water distributing system is made by two water spraying section, each section is connected to own water supply pipeline located under the sprayer above the basin by means of the water supply risers, each of them at output is connected to own horizontal water distributing pipeline in its middle. The later are installed parallel to each other and are connected with system of parallel water delivery pipelines, on which the water spraying nozzles are installed; they are uniformly distributed along the water delivery pipelines, bore diameter of the water distributing pipelines is reduced gradually in the direction from the point of connection to the water supply riser. The water spraying sections are located symmetrically relatively to the vertical axis of the cooling tower, each section is equipped with one water supply riser, the section risers are located in parallel to each other along the vertical axis of the cooling tower; the water distributing pipelines are located along diameter of the inscribed circle of the tower cross-section; to the water distributing pipelines the parallel water drainage pipelines are connected, using them the water distributing pipelines are connected with the water delivery pipelines, the water drainage pipelines are made gradually reducing in direction from the water delivery pipeline to the wall of the cooling tower, and are located at right angle to the water distributing pipelines, the and sections of the water drainage pipelines of each section are connected with each other by the peripheral pipelines located along the inscribed circle of the tower cross-section, and water spraying nozzles of the adjacent water delivery pipelines are located in staggered order relatively to each other.
EFFECT: increased water uniformity between the water spraying sections and along cross-section of the cooling towers, and due to this power consumption decreasing for water cooling.
SUBSTANCE: invention can be used in cooling towers of industrial enterprises and thermal power plants. Essence of the proposed method consists in the fact that in a closed recirculating cycle of the cooling tower, which is formed with cooling tower 1, air treatment device 2, steam/gas/air pipelines 3 and condensate pipelines 4 there installed is capacitive accumulator-regulator 5 of water condensate, with that, accumulator-regulator 5 of water condensate is a regulator for maintenance of the required water volume of the cooling tower and a service water supply system and at the same time the primary condensation heat storage, with that, phase heat accumulator-regulator 6 with heat capacitive substance is installed, with that, condensation of a steam-gas-air mixture takes place in the air treatment device on a cooling heat exchange surface with the temperature equal to or lower than a dew point, with that, the heat exchange surface is shaped with one or more subsequent methods: heat exchange tubes via which working process liquid circulates with the temperature equal to or lower than dew point, operation of a cooling plant, introduction to the steam-gas-air mixture of cold liquid or solid particles, by compression of the steam-gas-air mixture, with that, the heat exchange surface is shaped with one or more subsequent methods: heat exchange tubes via which working process liquid circulates with the temperature equal to or lower than dew point, by operation of the cooling plant, introduction to the steam-gas-air mixture of cold liquid or solid particles, by compression of the steam-gas-air mixture so that condensed phase can be thermodynamically more stable than gaseous one at achieved values of temperature and pressure, with that, condensation heat from the recirculating cycle is collected in the heat accumulator-regulator, from which it is supplied with heat pump 7 to a heat consumer for its intended purpose 8, with that, recirculation of the steam-gas-air mixture and air cleaned from moisture and cooled is performed in the closed recirculating cycle due to increasing difference of pressures of saturated steam and non-saturated steam in air cleaned from moisture and cooled and forced air supply with suction or pressure fan 9, with that, cooling of water below temperature values of wet-bulb thermometer of atmospheric air occurs and dependence of operation of the cooling tower on an external water source, on state of atmospheric air is reduced, and high concentration of heat accumulation is achieved, with that, excess air volume is removed through control valve 10 and refilled through an inlet valve.
EFFECT: invention allows controlling and maintaining the required water volume of a cooling tower and a service water supply system.
4 cl, 2 dwg
SUBSTANCE: invention can be used in cooling towers of industrial facilities and power plants. Method involves installation of capacitive accumulator 5 for water condensate control in closed recirculation loop of cooling tower, formed by cooling tower 1, air treatment device 2, steam and air ducts 3 and condensate pipelines 4, where accumulator for water condensate control serves also for required water volume maintenance in the cooling tower and process water supply system and for primary accumulation of condensation heat; phase accumulator for heat regulation with heat-absorbing material 6 is installed; condensation of steam and air mix is performed in air treatment device on the cooling surface of heat exchange at temperature equal or below dew point; heat exchange surface is formed by one or several consecutive methods: by heat exchange pipes where process fluid is circulating at temperature equal to or below dew point, by refrigeration aggregate operation, by adding cold liquid or solid particles to the steam and air mix, by steam and air mix compression; heat exchange surface is formed by one or several consecutive methods: by heat exchange pipes where process fluid is circulating at temperature equal to or below dew point, by refrigeration aggregate operation, by adding cold liquid or solid particles to the steam and air mix, by steam and air mix compression, so that condensed phase is more stable in thermodynamic sense than gas phase at temperature and pressure obtained; condensation heat from recirculation cycle is accumulated in heat regulation accumulator and fed from it by heat pump 7 to heat consumer at destination place 8; recirculation of steam and air mix and cooled dehydrated air in closed recirculation loop is performed by increasing pressure difference between saturated steam and non-saturated steam in cooled dehydrated air, and forced air feed by suction or forced-draft fan 9; water is cooled below temperature values of wet-bulb thermometer of ambient air, and cooling tower operation depends less on external water source and ambient air conditions; high concentration of heat accumulation is achieved, and excessive air volume is exhausted through control valve 10 and is compensated via inlet valve.
EFFECT: control and maintenance of required water volume in cooling tower and process water supply system.
4 cl, 2 dwg
FIELD: power industry.
SUBSTANCE: fan is installed on vertical shaft with the drive located in the machine hall under the fan cooling tower and consisting of the reducer, the hydraulic coupling, oil refrigerators and filters, the electric motor regulating the speed of rotation of a the fan shaft taking into account the temperature of chilled water and at regulation of fan shaft rotation speed in addition the temperature and pressure of lubricant oil in the reducer and the hydraulic coupling are considered, the level of vibration of the fan shaft and temperature of its guiding bearings, temperature of support bearings of the electric motor shaft, pressure and flow rate of cold water in the oil chillers, oil pressure differences in oil filters, force of the electric current passing through the electric motor winding, water level in the machine hall of the cooling tower, and the measured values of parameters are compared to the pre-set preventive and pre-emergency values and by results of comparison the pre-set rpm of the fan shaft is corrected on the regulator.
EFFECT: invention allows to improve the efficiency of cooling of return water due to improvement of reliability of operation of the cooler and decrease of accident rate of the process.
SUBSTANCE: invention relates to the contact coolers, in particular to the cooling towers, and can be used at thermal electric power stations for the recycling water cooling. Method of the recycling water supply using the cooling towers with sprinklers means that several cooling towers are connected by hydraulic circuits of water treatment and use, the cooling towers are connected such that the hydraulic circuits of water treatment and use will operate separately, at that in bottom part of the cooling tower casing at least two water gathering tanks are installed, they are connected by compensating pipe, ensuring hydraulic independence of the work water treatment and use circuits, at that one tank is connected with a pump supplying water cooled in the cooling tower to the consumer, this water is re-supplied via the valve to the second tank, from it heated water by pump via the filter and valve is supplied via the pipeline to the manifold with nozzles located in the top part of the cooling tower casing, at that the cooling tower sprayer is made as module out of layers of the polymer honeycomb pipes assembled out of corrugated plates that are welded along the corrugation edges, and structure of pipe channels comprises the following combinations: straight-convoluted, straight-inclined, convoluted-inclined.
EFFECT: increased capacity of the cooling tower operation.
FIELD: power industry.
SUBSTANCE: invention relates to heat engineering and may be used for air-cooling of recycled water of CHP, NPP and industrial enterprises. Fan cooling tower includes a housing rectangular in the cross section with air inlet openings at its bottom, the housing is installed on water-collecting basing on which installed is a fan unit containing diffuser in the form of convergent-divergent shell, in which placed is a blade wheel which shaft is connected to a drive of rotation; the housing is provided with water distributing collector with water-spray nozzles, sprayer, designed as several identical units assembled from vertical corrugated sheets, all these devices being arranged successively downwards. At the housing bottom above water surface of water-collecting basing there installed is a surface cooling unit made from corrugated sheets arranged parallel to movement of cooling air, which upper edges are on the same level with lower edges of air-intake openings; width of slots between corrugated sheets of the surface cooling unit is less than width of slots between corrugated sheets of sprayer units, but it is more than width of slots between corrugated sheets of the surface cooling unit upon their flooding, and outer surface of all corrugated sheets is covered with hydrophilic material.
EFFECT: enlargement of area of heat-and-mass transfer between air and cooled air in fan cooling tower.
FIELD: power industry.
SUBSTANCE: evaporative cooling tower includes a stack at the base of which there are air inlet openings with turning flow control shields with a horizontal rotation axis and air guide shields with a vertical rotation axis, which are located at the air inlet openings. The cooling tower includes turning air guide shields with the horizontal rotation axis, which are installed at an angle to horizon inside the stack at the base of the air inlet openings. The turning flow control shields with the horizontal rotation axis and the air guide shields with the vertical rotation axis are made in the form of a single structure installed in all air inlet openings and consisting of three shields with a horizontal rotation axis, which are located in the centre, and two shields with a vertical rotation axis, which are located on edges. The invention allows controlling intensity and uniform distribution of an airflow in winter time as a result of combined use of turning shields with horizontal and vertical rotation axes.
EFFECT: increasing thermal efficiency of stack-type evaporative cooling towers.
2 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: mechanical-draft tower consists of a housing, sprinkling device, liquid-collecting tank and fan. The case is composed of two parts - an upper one including a sprinkler and a droplet separator between which the manifold of sprinkling device with nozzles is mounted, and a lower part wherein the cooled water collecting tank with a fan mounted on it is arranged. Also, the fan is made from sheet stainless steel. A diffuser is installed into the collecting tank. The diffuser is a part of the housing and connected with the fan. The fan is fitted with a plastic working wheel and a multi-speed electric engine. Depending on weather conditions during operation the engine changes output of the tower due to change of air flow rate. and droplet separator is designed with triple corrugation, where the air flow three times changed its motion direction and at the expense of it the significant decrease of droplet carry-over is achieved, each of nozzles of the spraying device is designed with spraying disk and contains the cylindrical housing with the union rigidly connected to the housing and axially located in upper part of the housing, with a cylindrical hole for liquid supply, connected with the diffuser, axisymmetrical to the housing and union, and to the housing, in its lower part, by means of, at least, three spokes the sprayer located perpendicularly to the housing centreline and designed as a continuous disk is connected.
EFFECT: raised efficiency of mechanical-draft tower operation.
5 cl, 3 dwg
FIELD: power industry.
SUBSTANCE: cooling tower includes a tower, in the lower part of which an opening is located, which is provided with shields installed in it at an angle of 60-75° to a tangent drawn to a circle of the tower base, water spraying and irrigation systems; the shields are made in the form of tubular elements installed with a pitch that is not more than length of a tubular element. Tubular elements are connected to each other via a pipeline from the water spraying system, and along the lower surface of tubular elements there uniformly located are water atomisation holes with formation of tangential air inlet ducts. An inclined surface is formed along the perimeter of the cooling tower at an angle of 10-15°.
EFFECT: invention allows improving water cooling efficiency of a cooling tower due to intensification of heat and mass exchange inside the cooling tower by creation of swirling of an air flow with guide water curtains formed with cheaper and easier-to-operate tubular elements.
FIELD: heat-power engineering.
SUBSTANCE: proposed sectional cooling tower includes tower with peripheral and inner circular sprinkling sections mounted inside it, water catcher located above these sections and sprinkler located under them. Lower portion of tower is provided with air intake ports and pond. Sprinkling sections are connected to water distributing system consisting of two supply pipe lines and support pipe lines. Inner and peripheral sprinkling sections are formed by dispensing pipe lines running from periphery to axis of tower which are communicated in pairs by means of water spraying pipe lines. Water distributing system is provided with two circular water distributing pipe lines laid in pond. Supply pipe lines are located in pond and are connected to one of water distributing pipe lines each. Support pipe lines are connected to circular water distributing pipe lines by means of distributing pipe lines laid in pond. Support pipe lines connected to peripheral circular sprinkling section are connected to one of circular water distributing pipe line and support pipe lines connected to inner circular sprinkling section are connected to other circular water distributing pipe line. Inner diameter of pipe lines connected to inner circular sprinkling section is lesser than inner diameter of pipe lines connected to peripheral circular sprinkling section. Cross sectional area of tower occupied by peripheral circular sprinkling section is 55 to 65% of total cross sectional area of tower occupied by peripheral and inner circular sprinkling sections. Air intake ports are provided with swivel dampers mounted on vertical axles and stops for locking these dampers in closed position. Each damper is mounted for free turn and area of each damper is divided by vertical axis into two unequal parts for automatic opening by incoming air and closing by air escaping from ports of cooling tower.
EFFECT: enhanced efficiency of water distribution between circular sprinkling sections; enhanced efficiency of cooling water.
FIELD: heat-power engineering.
SUBSTANCE: proposed sectional cooling tower includes peripheral and inner circular sprinkling sections, water catcher located above these sections and sprinkler located under them. Lower portion of cooling tower is provided with air intake ports and pond. Sprinkling sections are connected to water distributing system consisting of two supply pipe lines and support pipe lines. Inner and peripheral sprinkling sections are formed by dispensing pipe lines laid in way from periphery to axis of tower and communicated in pairs by means of spraying pipe lines. Water distributing system is provided with water distributing riser located in central portion of tower and provided with vertical partition dividing it into two cavities for supply of peripheral and inner sprinkling sections. Supply pipe lines are located in pond and are connected to different cavities of water distributing riser. Support pipe lines are connected to water distributing riser by means of distributing pipe lines laid in pond and connected to respective cavities of water distributing riser in upper portion. Cross-sectional area of tower occupied by peripheral circular sprinkling section is 55 to 65% of total cross-sectional area of tower occupied by peripheral and inner circular sprinkling sections. Air intake ports are provided with swivel dampers mounted on vertical axles and stops for locking these dampers in closed position. Each damper is mounted for free turn and area of each damper is divided by vertical axis into two unequal parts for automatic opening by incoming air and hermetic closing by escaping air.
EFFECT: enhanced efficiency of distribution of water between sprinkling sections and cooling of water.
FIELD: heat exchanging apparatus.
SUBSTANCE: cooling tower has tower with sprinkler, basin, and ports for air supply. The ports are adjacent to the top edges of the movable deflectors provided with an actuator made of a winch with ties. The top member of each movable deflector is pivotally connected with the top edge of the port for permitting rotation around the horizontal axis. The facing of the top member of the movable deflector and member for overlapping the port are made of the cloth made of a flexible material. The bottom edge of the cloth is secured to the polymeric or metallic pipe with closed faces and partially filled with dry sand, gravel or granular filler. The ties from winches pass through blocks mounted above the movable deflectors and under the pipes. The ends of the ties are secured to the bottom edges of the top members of the movable deflectors from the side facing the cooling tower.
EFFECT: enhanced efficiency of cooling.
1 cl, 7 dwg
FIELD: compensation of refrigerant vapors in refrigerating plants.
SUBSTANCE: the eddy evaporative condenser has eddy heat exchangers in the form of large - diameter pipes with U-shaped ribs forming ducts for passage of refrigerant secured on the outer surface, axial-flow fans with profiled blades, nozzle fin with nozzles, circulating pump, filter, tray, drop separator and an outer guard. Eddy of air flow in the heat exchanger is effected by the axial-flow fan with profiled blades installed at angle ϕ=40°-65° between the generating line of the fan body and the tangent line to the blade at the air outlet hear the body wall. Eddy heat exchangers are made with a ribbing coefficient varying in accordance with relation: γ=πD/(nl)=1-5, where D - the pipe diameter; n-quantity of ducts; l-the duct width, which in turn vary within D=400-1000 mm; l -20-140 mm; the duct height l1=20-60 mm; pipe wall thickness δ=3-6 mm; duct wall thickness, δ1=2-4 mm, and pipe length L to diameter ratio D, L/D≤40.
EFFECT: reduced power and mass characteristics of the offered evaporative condenser.
2 cl, 5 dwg
FIELD: heat exchange apparatus; water cooling towers; power engineering and manufacture of building materials.
SUBSTANCE: proposed cooling tower includes tower proper with multi-section swirling unit in form of curvilinear guide members and water supply pipe line. Curvilinear guide members are discrete and varying in direction; at the end of each guide member in its lower part there is sill for dividing the flows; on the external side, device is provided with chutes having spraying and overfilling units. Upper part of each chute has port connected with sill and lower part has perforated plate which is connected with guide member; spraying unit is located in upper part of pipe line.
EFFECT: enhanced efficiency of heat exchange.
FIELD: heat-exchanger equipment, particularly for distributing, circulating, or accumulating liquid, as well as water recycling systems for power plants and industrial enterprises.
SUBSTANCE: structure has water feeding pipelines, wherein each pipeline is linked with separate water sprinkling section. Water distribution structure has two identical water sprinkling sections located one adjacent another and connected with water feeding pipelines by three support pipelines spaced equal distances one from another along water feeding pipeline. Each support pipeline is linked with horizontal water distribution pipeline in central part thereof. Water distribution pipelines are installed in parallel one to another and are mutually communicated by parallel water delivery pipelines having water sprinkling nozzles. Water sprinkling nozzles are uniformly distributed along water delivery pipelines. Two adjacent water sprinkling nozzles of each water delivery pipelines are spaced equal distances from the nearest water sprinkling nozzle connected to water delivery pipeline, wherein the distance is equal to distance between neighboring water sprinkling nozzles. Drift diameters of water distribution pipelines decrease in steps in direction from support pipeline connection with water distribution pipeline ends. Each end of water distribution pipeline is provided with flush orifice having 25 mm diameter. Diameter of one support pipeline located between two other ones exceeds diameter of these support pipelines by 20-30%.
EFFECT: increased efficiency of water distribution among annular water sprinkling sections and increased water cooling efficiency.
FIELD: cooling towers and systems of water recirculation of industrial enterprises.
SUBSTANCE: the invention is pertaining to the method of cooling a temperature of water in the heat-exchange aggregates, for example, in cooling towers and may be used in the systems of water recirculation of industrial enterprises. The method of cooling a temperature of water in the heat-exchange aggregates provides for the action by airflows on an evaporated surface of water. At that the surface of water in addition is exposed to a high-frequency ultrasonic action using the frequencies corresponding or multiple to the frequencies of the natural thermal oscillations of molecules of water: VA = Vnto·n and VA = Vnto /n, where:VA - frequency of acoustic oscillations; Vnto - frequency of natural thermal oscillations: where: i - average number of the intermolecular spacing intervals passed by a molecule or a particle till their concussion; L - a distance between the centers of molecules; d - a diameter of a molecule; k - Boltzmann constant; T-thermodynamic temperature of water; m - a molecular (corpuscle) mass; n - an integer 1,2,3,4,5, etc., at that with an amplitude of an oscillation displacement of the acoustic waves, equal or exceeding the value of the intermolecular spacing interval, at which the forces of attraction between the molecules of the water are insignificantly small: A ≥ l, where: A - is an amplitude of an oscillation displacement of the acoustic waves; l - a spacing interval between molecules of water, at which forces of attraction between them are insignificantly small: l ≈ 10-9 m. The high-frequency acoustic action on the evaporated surface is conducted simultaneously in two mutually intersecting directions. At that one of the directions is tangential to the evaporated surface. The high-frequency acoustic action on the evaporated surface is conducted mainly in the direction of motion of the aerodynamic airflows of the cooling tower. The evaporated surface is exposed to the high-frequency acoustic action frontally with an intensity level ≥ 145 dB, and tangentially - with a level of intensity ≥ 120 dB. The invention allows to raise intensity of cooling of water.
EFFECT: the invention ensures an increase of intensity of cooling of water.
4 cl, 3 dwg
FIELD: cooling of circulating water in small bulks-consumption of water fed to the consuming equipment - up to 10 cu.m.
SUBSTANCE: the ejection cooling tower has a body, water distributor unit made in the form of an ejector, lower tray for water collection and a mixing chamber. The mixing chamber has a round section, is positioned vertically, and an annular gap is provided between the body and the mixing chamber, a guide nozzle, reflector and a baffle plate are installed above the mixing chamber, a nozzle spraying the heated water from the using equipment, and a cup-shaped reflector are positioned inside it, and the ejector nozzle providing water recirculation is positioned below it at the inlet to the chamber in the lower part of the body, has a circular part for air inlet.
EFFECT: enhanced efficiency of the cooling process, reduced power intensity of the process by 30-40% and reduced overall dimensions of the unit (the outside diameter of the body is 600 mm).
FIELD: thermal power stations.
SUBSTANCE: proposed cooling tower has casing with air-intake holes that accommodates water dispensing devices connected to pipeline carrying water heated in condenser; it also has cooled water accumulating pond disposed under casing that communicates via pipeline with turbine condenser. Cooling tower is provided with air outlet holes and its casing is mounted horizontally and made in the form of parallelepiped or semi-cylinder; air intake holes are disposed on one end of casing and air outlet ones, on its other end; air outlet holes communicate through air duct with suction pipe of boiler air fan; air movement within cooling tower is ensured due to vacuum built up by boiler air fan.
EFFECT: reduced capital outlays, enhanced economic efficiency of thermal power station.
1 cl, 1 dwg
FIELD: circulating water cooling.
SUBSTANCE: mechanical-draft tower has stack with air-intake windows disposed along perimeter of lower part of stack, water distribution system, pool, water catcher, sprinkler made in form of sections. Any plate composing the section is wave-shaped. Each section is disposed at 90° degrees angle relatively adjacent one in alternating order as in vertical and in horizontal planes. Cycloid-formed jigs are provided at surfaces of plates at their both sides. Water distribution system is made in form of structure composed of concentrically circled metal-plastic tubes. Insertion-free widening gaskets are placed onto the tubes. Gaskets have internal spiral-shaped guides directed up. Tubes are connected together by means of branch pipes. They are also connected with feeding collector. Water catcher is made of ribbed tubes disposed in vertical.
EFFECT: improved efficiency of cooling of circulating water.