Mode of manufacturing of a heat exchanging section of a gas air cooling apparatus and a heat exchanging section of a gas air cooling apparatus

FIELD: the invention is designed for application in energy engineering namely it may be used at manufacturing of heat exchanging apparatus particularly for manufacturing of heat exchanging sections of gas air cooling apparatus.

SUBSTANCE: the mode of manufacturing of a heat exchanging section of a gas air cooling apparatus envisages manufacturing and assembling of a frame of a heat exchanging section, a chamber of input and a chamber of output of cooling gas with upper, lower walls, lateral walls forming correspondingly tube and exterior plates with openings, gables and at least one power bulkhead, assembling the walls of the heat exchanging section with wall dispersers-cowls of the flow of the exterior cooling environment predominantly of air, packing the heat exchanging section with a bundle of heat exchanging finned, single passing tubes with their installation in the heat exchanging section in rows along the height with dividing the rows with elements on different distances and fixing the ends of the tubes in the openings of the tube plates. At that the number n on a meter of the width of the transversal section of the bundle of the heat exchanging tubes is taken out of condition where FT - arelative total square of the heat exchanging surface of the bundle of finned tubes falling on 1 m2 of the square of the transversal section of the flow of the heat exchanging environment predominately of air taken in the diapason 72,4<FT < 275,8, a stretched magnitude; D1- a diameter of a heat exchanging tube with finning, m; D2 -a diameter of the same heat exchanging tube without finning, m; Δ -the thickness of the fin of the finning or an average thickness of a fin, m; Β - a pitch of the fin of the tube, m.

EFFECT: allows to decrease labor-intensiveness of manufacturing and assembling of a heat exchanging section of the gas air cooling apparatus at simultaneous increasing of heat exchanging effectiveness and manufacturability due to optimization of the quantity of heat exchanging tubes in a bundle and as a result of mass of elements of the chamber of input and of the chamber of output of gas namely tube and exterior plates, optimal number of openings in which their mass is decreased at simultaneous security of demanded solidity and longevity of separate elements of a heat exchanging section and as a result of the whole gas air cooling apparatus.

5 cl, 7 dwg

 

The invention relates to power engineering and can be used in the manufacture of heat exchangers, in particular in the manufacture of heat exchange sections of the air cooling apparatus of the gas.

Known heat exchangers with natural draught. Air coolers with a natural draught cooling air is drawn from the heat exchanger, and the pumping of air is carried out in the cooling towers of a height of 100-150 m by the difference in density of the air heated in the cooling tower, and in the environment. When the height of the tower and the high temperature of the air exiting from the heat exchanger air speed can reach significant values, and the specific air flow rate can reach values typical coolers with mechanical pumping by fans. The arrangement of heat exchangers with a natural draught depends on the size and contour of the tower. In the cooling towers of a small diameter may be more convenient location of the heat exchangers on the perimeter, it is possible zigzag installation of partitions, which allows you to increase the size of the flow area for the air inlet. In the cooling towers of large diameter heat exchangers are usually installed around the inner cross-section. They are mounted horizontally in the same plane or in the form of a star (see "Handbook of the exchanger is jennicam", Vol.2., M., "Inegrated", 1987, str-96).

The closest analogue of the proposed method to the technical essence and the achieved result is the method of Assembly and installation of the tube bundle countrybroch heat exchanger, which produces sub-frame by means of connecting rods tube plate, grid spacers and tube sheet, floating head. Then the frame is slid into the casing, the center of the frame relative to the flanges of this casing and attach it to the last. When this tube sheet is attached to the casing with rings, pins, nuts through the gasket and pipe Board floating head attached to the adapter by means of a split ring, welded to it nuts, studs, nuts through the gasket. On the other hand, the adapter is fixed to the casing by means of studs, nuts and gaskets. After installation of the frame in the casing to produce a packing of heat exchange tubes, which have technological allowance for machining. Then carry out the machining of the pipe ends so that their departure regarding, for example, the tube plate was depending on the welding method from 0 to 3 mm. Produce shallow mechanical expansion of the ends of the exposed pipes with the purpose of exposure of the size of the departure of pipes for quality of production welding. Next, perform p adveritising weld groups of pipes, consisting of 10-20 pipes and symmetrically located about the axis of the frame. Then welded pipe handle at the other end for welding and weld pipe Board floating head. Thus, the tube plate over the entire area of tightly connected groups of heat exchange tubes, while performing the role of the tightening elements in addition to tagum. Conduct further welding of the pipe ends in the same sequence of alternating welding to the tube boards. After welding, the heat exchange tubes are expanding in the tube plate by any of the methods used in the technique. At the end of the control Assembly of the heat exchanger on the strength and density of the delay of the tubes in the tube plate, using the ring and adapter, contributing to job in the casing closed volume of the test environment. Then disassemble and remove the ring and the adapter, after which the tube bundle and the shell is ready for further Assembly (see SU 1210539, F 28 D 7/00).

The present invention is to reduce the complexity of manufacturing and Assembly section of the machine air cooling gas while increasing the heat exchange efficiency and adaptability and high efficiency of the heat transfer section, made of a claimed method.

The task is part of the method is solved by the fact that a method for manufacturing the heat exchange section air cooler gas according to the invention provides for the manufacture and Assembly of the frame of the heat transfer section, the chamber inlet and the chamber outlet of the refrigerant gas from the top and bottom walls, side walls, forming respectively the pipe and the outside of the Board with holes, end walls and at least one power divider, the Assembly of the walls of the heat exchange section with wall displacers-fairing flow external cooling medium, preferably air, stuffing heat transfer section of the bundle heat exchanger having fins, one-way pipes installed in the partition rows the same height as the division series discontinuously elements and securing the ends pipes in the holes in the tube sheets, and the number n of tubes 1 meter width of the cross-section of the bundle of heat exchange tubes of the heat exchange section are from the condition

Ftthe relative total area of the heat exchange surface of the bundle of finned tubes per 1 m2cross-sectional area of flow of heat transfer medium, preferably air, take in the range 72,4<FT<275,8, a dimensionless quantity;

d1the diameter of the tubes with fins, m;

d2the diameter of the same is Teploobmennik tubes without fins, m;

δ - the thickness of the edges of the fins or the average fin thickness, m;

β - the step edges of the pipe, m

When the gasket heat transfer section of the bundle of tubes number of tubes height of the beam can be from two to fourteen, and in each row are placed from 12 to 125 pipes.

In each even-numbered row, counting from the bottom, the number of pipes can be even, and every odd number is odd or every even row, counting from the bottom, the number of pipes may be odd, and in each odd - numbered lines.

At least part of the used pipes can be made of double-layer of materials with different thermal conductivity, preferably a bimetal in which the outer layers and the fins can be made of vysokoteploprovodnyh metal or alloys, mainly from aluminum alloy with a thermal conductivity of not less than 5% greater than thermal conductivity of the material of the inner layer, which is used preferably steel, or may use at least part of the pipe, the outer layer and/or the fins may be made of copper or copper alloys, or may use at least part of the pipe, the outer layer and/or the fins can be made of high strength and resistant to corrosive factors outside environment material, for example of titanio titanium containing alloys, or having a floor, at least the outer surface and the fins of vysokoteploprovodnyh and resistant to aggressive media material, such as aluminum or copper.

The gasket of the first number of the multiple beam single finned tubes can produce preferably preset distantsiruyutsa elements providing a given step of pipes in series and pipes of each row, starting from second on the height of the beam can be separated from each other by the same or similar discontinuously elements in the specified step of the tubes in the rows and between the rows.

Pipes in the beam can be laid to ensure the transfer of load from the pipe through distantsiruyasj elements on the frame, a heat transfer section.

The task in the part of the device is solved due to the fact that the heat exchange section air cooler gas are produced in accordance with the above-described method.

Technical result provided by the invention, consists in reducing the complexity of manufacture and Assembly of the heat exchange section air cooler gas while increasing the heat exchange efficiency and technology by optimizing the number of heat exchange tubes in the beam and consequently the mass of the components of the chamber inlet and the chamber gas outlet, namely pipe and the outer boards, optimalnoe the number of holes which leads to decrease their weight while maintaining the required strength and durability of the individual elements of the heat transfer section and as a consequence all of the air cooling in General.

The invention is illustrated by drawings, where:

1 shows a heat-exchange section air cooler gas, longitudinal section;

figure 2 - heat exchanger section, top view;

figure 3 - cross section a-a in figure 1;

figure 4 - node B in figure 1;

figure 5 - node In figure 1;

figure 6 - frame heat exchanger section;

7 - chamber gas inlet cross section.

The heat exchange section air cooler gas that contains a frame 1, camera 2 and camera output 3 of the refrigerant gas, which consist of the top wall 4, bottom wall 5, two side walls, one of which performs the function of the tube plate 6 with holes 7, and the other external Board 8 with holes 9, end walls 10 and at least one of the power dividers 11.

Frame 1 heat transfer section has a wall 12 with wall displacers-fairing 13 flux of the external cooling medium, which is used mostly air. The single-bundle heat exchanger tubes 14 is formed by a series of pipes split series discontinuously elements 15. The ends of the pipes 14 are fixed in the holes 7 of the tube plate 6.

In the process of manufacturing the heat exchange section air cooler gas, depicted in figure 1 and 2, fabricate and assemble the rack frame 1 and the camera input 2 is the camera output 3 of the cooled gas from the upper 4 and lower 5 walls, the tube plate 6 with holes 7 and the outside of the Board 8 with holes 9, end walls 10 and at least one of the power dividers 11. The holes 9 external boards 8 install threaded plugs 16.

Assemble the walls 12 of the partition wall displacers-fairing 13. Next, perform the gasket heat transfer section of the single-bundle heat exchanger tubes 14 with fins 17 installing them in the section rows the same height as the division series discontinuously elements 15 and securing the ends of the tubes 14 in the holes 7 of the tube plate 6.

The number n of the pipe 1 meter width of the cross-section of the bundle of heat exchange tubes of the heat exchange section are from the condition

Ftthe relative total area of the heat exchange surface of the bundle of finned tubes per 1 m2cross-sectional area of flow of heat transfer medium, preferably air, take in the range 72,4<FT<275,8, a dimensionless quantity;

d1the diameter of the tubes 14 with fins, m;

d2is the diameter the same heat pipe 14 without fins, m;

δ - the thickness of the ribs 17 of the fins or the average thickness of the ribs 17, m;

β - step edges 17 of the tube 14, m

When the gasket heat transfer section of the tube bundle 14 number of rows of tubes height of the beam can p is animate from two to fourteen, and in each row are placed from 12 to 125 pipes.

In each even-numbered row, counting from the bottom, the number of tubes 14 can take even, and every odd number is odd or every even row, counting from the bottom, the number of tubes 14 can take the odd, and in each odd - numbered lines.

At least part used in the Assembly of the coil of finned tubes can be a double-layer of materials with different thermal conductivity, preferably a bimetal. The outer layers of the tubes 14 and fins 17 can be made of vysokoteploprovodnyh metals or alloys with a thermal conductivity of not less than 5% greater than thermal conductivity of the material of the inner layer. For example, the outer layers of the tubes 14 and fins 17 are made of aluminum alloy, and the inner layers of steel.

It is also possible to use at least part of the pipe 14, the outer layer and/or the fins 17 are made of copper or copper alloys, or the use of at least part of the pipe 14, the outer layer and/or the fins 17 are made of high strength and resistant to corrosive factors outside environment material, for example of titanium or titanium containing alloys, or having a floor, at least the outer surface and the fins of vysokoteploprovodnyh and resistant to aggressive media material, h is the example of aluminum or copper.

The gasket of the first number of the multiple beam single finned tubes 14 are produced preferably preset distantsiruyutsa elements 15 that provides the specified step of the tubes 14 in a row, and tube 14 of each row, starting from second on the height of the beam can be separated from each other by the same or similar discontinuously elements 15 that provides the specified step of the tubes in the rows and between the rows.

Pipe 14 in the beam can be laid to ensure the transfer of load from the pipe 14 through distantsiruyasj elements 15 on the frame 1 heat transfer section.

Heat-exchange section, manufactured in the described manner, by optimizing the parameters of the bundle of heat exchange tubes has a high heat exchange efficiency, advanced manufacturing and Assembly, the optimal flow of materials and the mass of structural elements chambers of gas entry and exit.

1. A method of manufacturing a heat exchange section air cooler gas, characterized in that it provides for the manufacture and Assembly of the frame of the heat transfer section, the chamber inlet and the chamber outlet of the refrigerant gas from the top and bottom walls, side walls, forming respectively the pipe and the outside of the Board with holes, end walls and at least one power divider, the Assembly of the walls of the heat exchange sections ol the wall displacers-fairing flow external cooling medium, preferably air, stuffing heat transfer section of the bundle heat exchanger having fins which pipes installed in the coil rows the same height as the division series discontinuously elements and securing the pipe ends in the holes in the tube sheets, and the number n of tubes 1 meter width of the cross-section of the bundle of heat exchange tubes of the heat exchange section are from the condition

where FTthe relative total area of the heat exchange surface of the bundle of finned tubes per 1 m2cross-sectional area of flow of heat transfer medium, preferably air, take in the range 72,4<FT<275,8, a dimensionless quantity;

d1the diameter of the tubes with fins, m;

d2the diameter of the same heat exchanger tubes without fins, m;

δ - the thickness of the edges of the fins or the average fin thickness, m;

β - the step edges of the pipe, m

2. The method according to claim 1, characterized in that the gasket heat transfer section of the bundle of tubes number of tubes height of the beam take from two to fourteen, and in each row are placed from 12 to 125 pipes.

3. The method according to claim 1, characterized in that in each even-numbered row, counting from the bottom, the number of pipes accept even, and in each odd the number is odd or every even row, counting from the bottom, the number of pipes accept odd, and in each odd - numbered lines.

4. The method according to claim 1, characterized in that use, at least part of the pipes, which are made of double-layer of materials with different thermal conductivity, preferably a bimetal in which the outer layers and their fins are made of vysokoteploprovodnyh metal or alloys, mainly from aluminum alloy with a thermal conductivity of not less than 5% greater than thermal conductivity of the material of the inner layer, which is used preferably steel, or use at least part of the pipe, the outer layer and/or the fins are made of copper or copper alloys, or use, at least part of the pipe, the outer layer and/or the fins are made of high strength and resistant to corrosive factors outside environment material, for example of titanium or titanium containing alloys, or having a floor, at least the outer surface and the fins vysokoteploprovodnyh and resistant to aggressive media material, such as aluminum or copper.

5. The method according to claim 1, characterized in that the gasket of the first number of the multiple beam single finned tubes produce preferably preset externally the respective elements, providing a given step of pipes in series and pipes of each row, starting from second on the height of the beam, separated from each other by the same or similar discontinuously elements in the specified step of the tubes in the rows and between the rows.

6. The method according to claim 1, characterized in that the pipes in the bundle stack with transmitting the load from the pipe through distantsiruyasj elements on the frame, a heat transfer section.

7. The heat exchange section air cooler gas, characterized in that it is made by a method according to any one of claims 1 to 6.



 

Same patents:

FIELD: the invention is designed for application in energy engineering and namely is used for manufacturing of heat exchanging equipment particular for gas air cooling apparatus.

SUBSTANCE: the mode of manufacturing of a tube chamber of the gas air cooling apparatus or a section of the gas air cooling apparatus fabrication of half-finished articles out of metallic sheet for lateral, upper, lower and butt-ends walls and for no less than two power bulkheads of the tube chamber with openings for passing of a gas flow. At that the length of the half-finished articles for lateral walls are fulfilled correspondingly the width of the apparatus or of the section of the apparatus. All half-finished articles are fabricated for the lateral walls with fulfilling chamfers for welding. At that at least the chamfers on the half-finished articles for the lateral walls forming the tube and the exterior plates of the chamber and also the chambers on upper and lower walls are fulfilled of broken configuration in the transversal section with forming support regions and edges of a welding mouth with a technological angle of opening-out 41-53°. After fabrication of half-finished articles an in series assembling and connection on welding of lateral walls with power bulkheads are executed and trough them a united rigid construction to which the upper and the lower walls are connected is formed. After that in one of the lateral wall forming a tube plate openings for the ends of the heat exchanging tubes openings are made and in the other lateral wall forming an exterior plate threading openings coaxial with the openings in the tube plate are fulfilled for providing possibilities of introduction of technological instruments for fixing the ends of the tubes in the tube plate and the subsequent installation of caps predominantly along the thread in the openings of the exterior plate and in the upper and/or in the upper walls openings for sleeves predominantly with flanges for connection with a collector of feeding or for offsetting of gas are fulfilled. At that the power bulkheads are installed in a high range making up ±1/4 of the high of the chamber counting from medium horizontal flatness along the height of the chamber, and the gables of the chamber are mounted after installation and fixing of the ends of the heat exchanging tubes of the chamber.

The tube chamber of the gas air cooling apparatus or the section of the gas air cooling apparatus, the gas input chamber of the gas air cooling apparatus or the section of the gas air cooling apparatus and the gas output chamber of the gas air cooling apparatus or of the section of the gas air cooling apparatus are manufactured in accord with the above indicated mode.

EFFECT: allows to decrease the labor-intensiveness of the mode, increase manufacturability of the measuring chambers and improve their strength characteristics and thermal efficiency.

15 cl, 8 dwg

FIELD: the invention is designed for application in energy engineering namely in the technology of manufacturing and construction of heat exchanging sections of a gas air cooling apparatus.

SUBSTANCE: the mode of manufacturing of a heat exchanging section of a gas air cooling apparatus includes manufacturing predominantly on a loft of the lateral walls of the frame of the

section with wall displacers-cowls of air environment, assembling on a slip with support poles of the elements of the frame of the section - lateral walls, lower transversal beams and gas input-output chambers forming gables of the frame and also of frame rigidity elements with the following packing of the multi-row bundle with single-passing finned heat exchanging tubes with forming with them and the gas input-output chambers of a vessel working under pressure, installation of upper transversal beams and carrying out hydraulic tests of the assembled section. At that the terminal poles of the slip are executed with locating their leaning sites at different levels with height difference making ( 1,1-4,6)d, where d - an interior diameter of a tube of the bundle and at assembling the frame the gas input-output chambers are installed on the final poles of the slip.

The heat exchanging section of the gas air cooling apparatus is fabricated in accord with above indicated mode. The mode of manufacturing of the heat exchanging section of the gas air cooling apparatus includes manufacturing on the loft of the lateral walls of the frame of the section with wall dispersers-cowls of air environment, and also elements of rigidity of the frame, assembling on the loft with support poles of the elements of the frame - lateral walls , lower transversal beams and forming gables of the walls of the frame of the chambers of input-output of the gas and also of the elements of rigidity of the frame with following packing of the multi-row bundle out of single-passing finned heat exchanging tubes forming with their help and the gas input-output chambers of a vessel working under pressure, installation of upper transversal beams and carrying out of hydraulic tests of the assembled section. At that the low and the upper transversal beams of the frame of the section are installed along the length of the lateral walls with spacing overall of height marks, equal (0,12-),51)d, where d - an interior diameter of the tube of the bundle and cuts of different height predominantly for dimensions of the transversal section of the chambers are made for installation of gas input-output chambers on the final plots of the lateral walls in the upper belt and the overall part of the height of the walls. The heat exchanging section of the gas air cooling apparatus is characterized with the fact that it is manufactured in accord with this mode.

EFFECT: allows to increase manufacturability of fabricating of the heat exchanging sections at simultaneous lowering of metal consuming of construction, simplification of the process of fabricating and lowering labor-intensiveness.

13 cl, 10 dwg .

FIELD: the invention is designed for application in the field of heat exchange-and-power engineering namely in heat exchanging apparatus of the type of a gas air cooling apparatus.

SUBSTANCE: the heat exchanging apparatus of the type of a gas air cooling apparatus has an arrangement for drawing off and feeding into the zone of the bundle of heat exchanging tubes of exterior heat exchanging environment fulfilled in the shape of a vessel open from the side of the gables. The vessel is formed in the zone of location of the heat exchanging tubes with the help of lateral and gables walls of the heat exchanging section of the apparatus and a multi-row bundle of heat exchanging tubes. At the input it is fulfilled with multi-mouth section formed by the mouths of the casings of ventilators for feeding the cooling environment . Each of them has a baffle with a round transversal section in the zone of locating the ventilator and a multi angular predominantly rectangular transversal section in the zone adjoining to the heat exchanging section c with at least two opposite edges adjoining to the corresponding contact plots of the lateral walls of the heat exchanging section. AT that the lateral walls from the interior side of the vessel are provided with longitudinal cowl-displacers in the shape of the elements forming in the vessel extensive projections at least on the most part of the length of the interior wall of the vessel and the gables of the vessel are formed with the help of the tube plates of the gas input-output chambers of the heat exchanging section at least at the part of their height making up 0,5-0,85 of the height of the lateral walls. The tube plates are installed as piers of different height in the final ends of the plots of the lateral walls of the vessel. AT that the correlation of the total square of the multi mouth section at the input of the vessel formed with the help of mouths of the casings of the ventilators in the vessel to the square of the section of the vessel at its output makes according to overall dimensions of the vessel ∑Flow:FUPPER=0,42-0,9 and in the flatness of aerodynamic shading formed by the upper row of the bundle of the heat exchanging tubes the mentioned correlation makes 0,51±11,5% where ∑low- total square of the multi mouth input section of the vessel, m2; F upper - the dimension square of the working section of the vessel in its upper part without taking into consideration the aerodynamics shading developed by the heat exchanging tubes of the bundle,m2.

EFFECT: allows to increase efficiency of a gas air cooling apparatus due to constructive decisions of the walls of a vessel securing better aerodynamics of passing of the cooling environment including wall zones of the vessel and also in high adaptability of the system of the vessel to seasonal changes in exterior environment and mass of the cooling gas passing through the heat exchanging tubes of the bundle of the vessel at the expense of optimization of correlation of parameters of passing sections of the vessel and of the whole apparatus.

4 cl, 3 dwg

FIELD: the invention is designed for application in heat exchanging apparatus namely in heat exchanging sections and may be used in air cooling apparatus.

SUBSTANCE: the heat exchanging section of a gas air cooling apparatus has a frame consisting of lateral walls provided with wall displacers of the flow of exterior cooling environment predominantly air, upper and low beams and also chambers with tube plates for inputting and outputting of the cooling gas. In the tube plates the ends of finned heat exchanging tubes are choked up. These tubes develop a multi-row, single passing bundle. AT that each chamber of input and output of gas is located correspondingly on the input and the output of the heat exchanging tubes and together with them a vessel working under pressure. At that the chamber of input or output of gas is formed by corresponding tube plate and the parallel exterior plate which has transparent openings provided with removable corks. These openings are coaxial with the openings in the tube plate and the openings in the tube plates are located in rows at the height of the section with an axial pitch making up (0,95-1,35)-d and with axial pitch in the rows adjacent according the height making (0,91-1,21)-d where d - an exterior diameter of the finning of the heat exchanging tube. At that the openings in each row are displaced on 0,4-0,6 of the pitch from the axles of the openings in the row relatively to the adjacent rows according to the height. The number of the heat exchanging tubes in the direction of the vector of the flow of the exterior cooling environment predominantly air makes from 4 to 14 and in the row the number of the heat exchanging tubes edgewise of the section exceeds in 4-9 times the number of the heat exchanging tubes located in series along the way of the mentioned flow of exterior cooling environment predominantly air.

EFFECT: allows to increase efficiency of heat exchanging at minimum metal consuming in the construction due to optimization of the parameters of heat exchanging elements.

19 cl, 6 dwg

FIELD: the invention refers to heat-and-power engineering particularly to the rows of heat exchanging tubes and may be used in gas air cooling apparatus.

SUBSTANCE: the tube row of the gas air cooling apparatus consists of finned tubes successively located in a row with spacing in axes making 1,7-3,4 diameter of the body of the tube without taking into consideration the diameter of fins. At that the finning of each tube is fulfilled transversely relatively to the central longitudinal axle of the tube and located under an angle to the mentioned axle. The central longitudinal axes of the tubes are oriented predominantly in parallel and located in a conditioned flatness normal to the vector of the flow of the exterior cooling environment, predominantly air. At that the tubes are located to form the flow in the projection of the mentioned conditioned flatness of aerodynamics shading with various aerodynamics transparency consisting of plots of complete aerodynamics opaque corresponding to projections on the mentioned flatness of the bodies of the tubes without taking the finning into account and the plots of incomplete aerodynamics transparency each limited from one side with a conditioned direct line passing along the tops of the fins and from the other side - with the contour of the body of the tube to the base of the fins. At that the tubes in the row are accepted at the condition according to which correlation on the unit of the square of the mentioned flatness of total square of the mentioned plots with various aerodynamics opaque compose correspondingly (0,25-0,52):(0,29-0,58).

EFFECT: allows to increase thermal aerodynamics characteristics of the tube row of the gas air cooling apparatus and improve conditions for streamlining tubes in the row with the exterior cooling environment and provides increasing thermal effectiveness of the apparatus at minimal metal consuming by the construction.

3 cl, 3 dwg

FIELD: the invention is designed for application in heat-and-power engineering particular in convection heating surfaces namely in the bundle of finned heat exchanging tubes and may be used in a gas air cooling apparatus.

SUBSTANCE: the bundle of finned heat exchanging tubes for a gas air cooling apparatus has tubes located in rows placed one over another with displacement of the tubes in each row relatively to the tubes in the rows adjacent throughout the height of the bundle. The rows of the tubes are separated one from another by distancing elements in the shape of plates with prominent and concave plots placed interchangeably forming supporting sites for the rows of tubes adjacent throughout the height of the bundle. At that the tubes are predominately fulfilled as single-pass ones with finning. They form in the limits of each row in projection on conditional flatness normal to the vector of the flow of an exterior heat exchanging environment inputting to the tubes predominantly cooling air flow. The flow passes through the central longitudinal axle of the tubes of each row of the plots of complete aerodynamics opaque corresponding to projections on the indicated flatness of the tubes without taking into account the finning, the plots of complete aerodynamics transparency corresponding to the projections on the indicated gaps between the edges of the fins directed to each other and adjacent to the row of the pipes and the plots of incomplete aerodynamics transparency. Each plot is limited from one side with conditional direct line passing over the tops of the fins and the other side - with the contour of the body of the tube along the base of the fins. At this the specific correlation of the mentioned conditional flatness of the unit of the area to the mentioned conditional flatness of the summary of the square projections of the indicated areas with various aerodynamics transparency in each row composes correspondingly (0,85-1,15): (1,82-2,17): (1,80-2,190).

EFFECT: allows to increase thermal effectiveness due to optimization of parameters of the heat exchanging elements.

4 dwg, 19 cl

FIELD: the invention is designed for application in energy engineering namely in the technology of manufacturing and construction of heat exchanging sections of a gas air cooling apparatus.

SUBSTANCE: the mode of manufacturing of a heat exchanging section of a gas air cooling apparatus includes manufacturing predominantly on a loft of the lateral walls of the frame of the

section with wall displacers-cowls of air environment, assembling on a slip with support poles of the elements of the frame of the section - lateral walls, lower transversal beams and gas input-output chambers forming gables of the frame and also of frame rigidity elements with the following packing of the multi-row bundle with single-passing finned heat exchanging tubes with forming with them and the gas input-output chambers of a vessel working under pressure, installation of upper transversal beams and carrying out hydraulic tests of the assembled section. At that the terminal poles of the slip are executed with locating their leaning sites at different levels with height difference making ( 1,1-4,6)d, where d - an interior diameter of a tube of the bundle and at assembling the frame the gas input-output chambers are installed on the final poles of the slip.

The heat exchanging section of the gas air cooling apparatus is fabricated in accord with above indicated mode. The mode of manufacturing of the heat exchanging section of the gas air cooling apparatus includes manufacturing on the loft of the lateral walls of the frame of the section with wall dispersers-cowls of air environment, and also elements of rigidity of the frame, assembling on the loft with support poles of the elements of the frame - lateral walls , lower transversal beams and forming gables of the walls of the frame of the chambers of input-output of the gas and also of the elements of rigidity of the frame with following packing of the multi-row bundle out of single-passing finned heat exchanging tubes forming with their help and the gas input-output chambers of a vessel working under pressure, installation of upper transversal beams and carrying out of hydraulic tests of the assembled section. At that the low and the upper transversal beams of the frame of the section are installed along the length of the lateral walls with spacing overall of height marks, equal (0,12-),51)d, where d - an interior diameter of the tube of the bundle and cuts of different height predominantly for dimensions of the transversal section of the chambers are made for installation of gas input-output chambers on the final plots of the lateral walls in the upper belt and the overall part of the height of the walls. The heat exchanging section of the gas air cooling apparatus is characterized with the fact that it is manufactured in accord with this mode.

EFFECT: allows to increase manufacturability of fabricating of the heat exchanging sections at simultaneous lowering of metal consuming of construction, simplification of the process of fabricating and lowering labor-intensiveness.

13 cl, 10 dwg .

FIELD: heat and power engineering, possibly manufacture of heat exchange units of apparatuses for recovering exhaust gas heat of aggregates, particularly for heating air by means of exhaust combustion products from compressor of gas turbine plant of gas pumping aggregate in compressor stations of main gas conduits.

SUBSTANCE: method comprises steps of making in manufacturing stations blanks of shells of housings manifolds for supplying and discharging heated air, tubes and tube walls, members of unit carcass; bending tubes for forming four-way bent in horizontal plane tubes having successively changed along length two outer and two inner branches and three elbows joining said branches; in each, mainly in odd row forming two tubes with bent portions having length πR where R - radius of tube; forming bent portions of one tube in its inner elbow and forming bent portions of other tube in two outer elbows; forming other tubes of odd and even rows with bent portions having length πR/2 and joining them by means of rectilinear inserts with successively changed length values. In each row two inner branches of each next tube of row with joining elbow are formed in such a way that they are inscribed from outside into bending formed by respective branches and by joining them elbow of previous tube of said row. Minimum-length tube of each row has development length lmin consisting at least 0.75 of development length lmax of maximum -length tube of row. After making bent tubes, said tubes are pressurized; manifolds for supplying and discharging air are assembled and tube walls are welded-in to them. Unit carcass and manifolds for supplying and discharging air are mounted; tubes are packed and they are again pressurized together with manifolds.

EFFECT: enhanced effectiveness of manufacturing process.

10 cl, 14 dwg

FIELD: power machine engineering, possibly manufacture of heat exchange apparatuses, namely heat exchange units of modular or modular-sectioned heat exchange apparatuses of regenerative air heaters.

SUBSTANCE: method of manufacturing intermediate, upper and lower heat exchange units comprises steps of making in manufacturing stations blanks of shells of housings of manifolds, tubes, tube walls and members of unit carcass; bending tubes for forming multi-way bent in plane tubes; pressurizing bent tubes; assembling manifolds for supplying and discharging air and welding-in tube walls to them; mounting unit carcass and manifolds; packing tube bundle and again pressurizing tubes. Unit carcass and manifolds for supplying and discharging air are mounted in fixture at installing on plate fixture of portal frame with struts and upper beam, additional struts with detachable beams provided with coordinate members with supporting vertical surfaces and additional struts for fixing mounted struts of unit carcass. At manufacturing lower heat exchange unit, two-step plate of fixture is used. At mounting manifolds for supplying and discharging air, their ends are fixed along contours and three-dimensional position of housing of each manifold is fixed by means of coordinate and supporting discs secured from lower side of detachable lower beam of portal frame coaxially to central vertical axes of manifolds.

EFFECT: enhanced effectiveness of manufacturing process.

16 cl, 16 dwg

FIELD: producing fuel assemblies from fuel elements.

SUBSTANCE: fuel elements held in accumulating tank installed under machine-tool incorporatying two-coordinate positioner and linear drive with pusher provided with collet chuck are vertically inserted in parallel into fuel assembly frame. Distance between spacer grids is increased from 250 to 500 mm and more.

EFFECT: reduced material input due to shorter distance between fuel assembly spacer grids.

5 cl, 6 dwg

FIELD: heat and power engineering, possibly manufacture of apparatuses for recovering heat of exhaust gases of aggregates, namely for heating air by means of exhaust combustion products from compressor of gas turbine aggregate.

SUBSTANCE: method comprises steps of placing in stock carcass of heat exchange unit and of shell of manifolds for supplying and discharging heated air to which tube plates are welded-in; mounting between shells panel of member for displacing inter-tube fluid having flat portion arranged in plane of outer surfaces of tube plates; joining displacing member with shells and joining shells with carcass; then putting in heat exchange unit four-way heat exchanging tubes row-by-row from downwards to upwards; passing each tube of each outer branch through openings of spacing grids fixed on carcass of heat exchange unit; placing inner branches of heat exchanging tubes onto comb secured to bottom; separating inner branches of next rows by means of spacing strips and arranging inlet and outlet ends of tubes respectively in tube plates of shells of manifolds for supplying and discharging heated air; then securing ends of heat exchanging tubes in tube plates and fastening end wall of heat exchange unit.

EFFECT: enhanced accuracy of assembling, lowered labor consumption of working operations.

15 cl, 14 dwg

FIELD: power production machine engineering, possibly manufacture of heat exchange apparatuses such as regeneration type air heaters.

SUBSTANCE: complex includes connected according manufacturing process: station for making tube walls, station for making shells of housing of manifolds for supplying and discharging air, station for bending tubes and station for assembling heat exchange units. Station for bending tubes is connected according to manufacturing process with station for assembling units at least through one stationary or moved apparatus for separate (according to size) vertical storage of bent tubes of bundle before their placing in unit. Bending station includes tube bending machine tool and apparatus for feeding to bending zone of said station tubes and mandrel with rod. Station for assembling units includes at least two stocks; one stock is designed for assembling upper and intermediate units, and at least one is designed for assembling lower unit. Each stock is provided with portal framework having detachable portal beam. On lower side of said beam are mounted: coordinate-supporting discs and apparatus for aligning and fixing in target position tube walls in shell of housing of each manifold for supplying and discharging air.

EFFECT: enhanced efficiency of manufacturing complex.

6 cl, 9 dwg

The invention relates to the field of power engineering and can be used in the manufacture of air cooling units, mainly used in chemical and gas industry

The invention relates to a process of manufacturing the heat sink caissons used in the melting units, in particular in the incineration of solid waste for cooling the walls and ceilings in conditions of high temperatures and aggressive environments

The invention relates to the field of power engineering

The invention relates to nuclear energy and may find application in the manufacturing heads, shanks and Assembly of fuel elements (FE) in the fuel Assembly (FA) models 0401, 493 for a nuclear reactor VVER-1000 and VVER-440

FIELD: power production machine engineering, possibly manufacture of heat exchange apparatuses such as regeneration type air heaters.

SUBSTANCE: complex includes connected according manufacturing process: station for making tube walls, station for making shells of housing of manifolds for supplying and discharging air, station for bending tubes and station for assembling heat exchange units. Station for bending tubes is connected according to manufacturing process with station for assembling units at least through one stationary or moved apparatus for separate (according to size) vertical storage of bent tubes of bundle before their placing in unit. Bending station includes tube bending machine tool and apparatus for feeding to bending zone of said station tubes and mandrel with rod. Station for assembling units includes at least two stocks; one stock is designed for assembling upper and intermediate units, and at least one is designed for assembling lower unit. Each stock is provided with portal framework having detachable portal beam. On lower side of said beam are mounted: coordinate-supporting discs and apparatus for aligning and fixing in target position tube walls in shell of housing of each manifold for supplying and discharging air.

EFFECT: enhanced efficiency of manufacturing complex.

6 cl, 9 dwg

FIELD: heat and power engineering, possibly manufacture of apparatuses for recovering heat of exhaust gases of aggregates, namely for heating air by means of exhaust combustion products from compressor of gas turbine aggregate.

SUBSTANCE: method comprises steps of placing in stock carcass of heat exchange unit and of shell of manifolds for supplying and discharging heated air to which tube plates are welded-in; mounting between shells panel of member for displacing inter-tube fluid having flat portion arranged in plane of outer surfaces of tube plates; joining displacing member with shells and joining shells with carcass; then putting in heat exchange unit four-way heat exchanging tubes row-by-row from downwards to upwards; passing each tube of each outer branch through openings of spacing grids fixed on carcass of heat exchange unit; placing inner branches of heat exchanging tubes onto comb secured to bottom; separating inner branches of next rows by means of spacing strips and arranging inlet and outlet ends of tubes respectively in tube plates of shells of manifolds for supplying and discharging heated air; then securing ends of heat exchanging tubes in tube plates and fastening end wall of heat exchange unit.

EFFECT: enhanced accuracy of assembling, lowered labor consumption of working operations.

15 cl, 14 dwg

FIELD: producing fuel assemblies from fuel elements.

SUBSTANCE: fuel elements held in accumulating tank installed under machine-tool incorporatying two-coordinate positioner and linear drive with pusher provided with collet chuck are vertically inserted in parallel into fuel assembly frame. Distance between spacer grids is increased from 250 to 500 mm and more.

EFFECT: reduced material input due to shorter distance between fuel assembly spacer grids.

5 cl, 6 dwg

FIELD: power machine engineering, possibly manufacture of heat exchange apparatuses, namely heat exchange units of modular or modular-sectioned heat exchange apparatuses of regenerative air heaters.

SUBSTANCE: method of manufacturing intermediate, upper and lower heat exchange units comprises steps of making in manufacturing stations blanks of shells of housings of manifolds, tubes, tube walls and members of unit carcass; bending tubes for forming multi-way bent in plane tubes; pressurizing bent tubes; assembling manifolds for supplying and discharging air and welding-in tube walls to them; mounting unit carcass and manifolds; packing tube bundle and again pressurizing tubes. Unit carcass and manifolds for supplying and discharging air are mounted in fixture at installing on plate fixture of portal frame with struts and upper beam, additional struts with detachable beams provided with coordinate members with supporting vertical surfaces and additional struts for fixing mounted struts of unit carcass. At manufacturing lower heat exchange unit, two-step plate of fixture is used. At mounting manifolds for supplying and discharging air, their ends are fixed along contours and three-dimensional position of housing of each manifold is fixed by means of coordinate and supporting discs secured from lower side of detachable lower beam of portal frame coaxially to central vertical axes of manifolds.

EFFECT: enhanced effectiveness of manufacturing process.

16 cl, 16 dwg

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