Tube and shell heat exchanger

FIELD: heating.

SUBSTANCE: heat exchanger comprises a housing provided with fittings for input and output of the coolant, the lids with fittings for input and output of the heat exchanging medium, and the bundle of heat exchanging tubes fixed in the holes of the tube grids, consisting of inner and the subsequent perforated plates with sealing material between them. Each tube grid is provided with the additional perforated plate. The housing is made with the inner recesses at the ends. The inner and the subsequent plates of the tube grids are clamped with the lids in the recesses of the housing. The heat exchanging tubes are equipped with clip bands.

EFFECT: simplification of manufacturing, improvement of reliability of the heat exchanger.

6 cl, 2 dwg

 

The invention relates to the field of engineering, namely, shell & tube heat exchangers for heat exchange of liquid and gaseous media in the energy, gas, chemical and other industries.

Known shell-and-tube heat exchangers with different ways of mounting tubes, but the method of attachment of each pipe individually with packing a wide distribution has not been as complicated and roads, to not allows you to collect pipes in tight beam (Dynarski Y. I. Processes and apparatuses of chemical technology. M, Chemistry, 1995, part 1, pp. 334-339).

A disadvantage of the known heat exchangers and tube sheets is the high complexity of holding tubes in these grids, the need for temperature compensation voltage. Due to the inability to reduce the distance between pipe flow cross section of the annulus 2 to 3 times more flow area inside the pipes. Therefore, when the same expenditure of heat transfer fluids that have the same aggregate state, the speed of the fluid in the annular space lower and the heat transfer coefficients on the surface of the annulus is low, which reduces the heat transfer coefficient in the apparatus. To increase the heat transfer coefficient in known heat exchangers of the APC is ratah increase the speed of the coolant in the annular space by the installation of the transverse and longitudinal partitions, do not give significant results, as the partitions also increases the hydraulic resistance and create stagnant zones in the annular space.

Also known shell-and-tube heat exchanger tube which is collected by bonding a polymeric filler and have rings on the heat exchanger tubes to prevent them from sagging when performing apparatuses of greater length. This design of the heat exchanger allows to increase the heat exchange parameters with decreasing mass and size parameters through the use of specially profiled thin-walled heat exchange tubes, collected in dense beam (patent RF №2038890, IPC B21D 53/06, 1995).

However, the known heat exchanger unpromising for larger sizes. It cannot be used for environments with high thermodynamic loads that can destroy the tube collected using adhesive polymer filler having far exceeding than the metals used in the manufacture of heat exchanger tubes and enclosures, the coefficient of linear thermal expansion. Furthermore, polymeric materials with increasing temperature, softening, loss of strength, and rings on the heat exchanger tubes to prevent them from sagging increase the hydraulic resistance. A significant drawback of this t is ploumanach is the inability disassembly of the beam at the elementary heat exchanger pipes for replacement or cleaning of internal and outer surfaces of pipes.

The closest in technical essence to the proposed heat exchanger is a shell-and-tube heat exchanger, selected as a prototype and containing a cylindrical casing provided with a socket for input and output coolant, cover with fittings for inlet and outlet Teploobmennik environment, and a bundle of heat exchange tubes, fixed in the holes in the tube sheets, consisting of inner and subsequent perforated plates with heat-resistant sealant between them, sandwiched between the lid and the casing. In the subsequent plate of each tube made extra holes between the holes for the pipes. When assembling the known heat exchanger sealant fills the gaps between the plates, pipes and casing. When this excess sealant through additional holes formed rivets, additionally connecting plate pipe arrays (USSR author's certificate No. 1758381, IPC F28D 7/00, 1992).

The disadvantages of the selected prototype are additional holes in the subsequent plates under rivet, significantly increasing the tube length, not allowing to assemble the tubes in a tight beam and thereby increasing size and weight. In addition, these rivets are hampering razboritost heat exchanger elements to replace any of them or clean internal and outer surfaces.

The objective of the invention is the creation of a shell-and-tube heat exchanger without limitation diameter and length with durable and reliable fixation of the heat exchange tubes, as in the beam and tube sheets, enabling them to use existing methods of heat exchange intensification and reduction of hydraulic resistance with decreasing mass and size parameters and improving maintainability.

The problem is solved in that in shell-and-tube heat exchanger containing casing, provided with a socket for input and output coolant, cover with fittings for inlet and outlet Teploobmennik environment, and a bundle of heat exchange tubes, fixed in the holes in the tube sheets, consisting of inner and subsequent perforated plates with sealing material between them, according to the invention, each tubular grille is provided with at least one additional subsequent perforated plate, the casing is made with the internal grooves on the ends, inner and subsequent plates, tube sheets clamped lids in the grooves of the casing and the tubes supplied with bandages.

The problem is solved also by the fact that the holes for the heat exchange tubes of the subsequent plate tube from the fitting to exit Teploobmennik environment mouthbut performed in diameter, equal to the inner diameter of the heat exchange tubes.

The problem is solved also by the fact that the tires heat exchange tubes can be made in the form of a wire spiral coiling.

The problem is solved also by the fact that the tubes can be tied up into a beam clamps or wire wound in a spiral.

The problem is solved also by the fact that the casing may be extended at places of fittings for input and output of fluid and executed in the extended part with the tabs.

The problem is solved also by the fact that the casing may be in the form of a hexagonal prism.

In Fig.1 shows the proposed shell-and-tube heat exchanger.

In Fig.2 - option offer shell and tube heat exchanger with extended shroud.

We offer shell and tube heat exchanger includes a casing 1, provided with fittings 2, 3 for input and output of fluid and is made with internal grooves 4 on the ends of the cover 5 with the fittings 6, 7 for input and output Teploobmennik environment, and a bundle of heat exchange tubes 8, are fixed in the holes in the tube sheets, consisting of inner and subsequent perforated plates 9, 10 with the sealing material 11 between them. Domestic and subsequent plates 9, 10 tube sheets are clamped lids 5 in the grooves 4 of the casing 1 and the heat pipe 8 is equipped with the tires is. Holes for heat exchanger pipes 8 further plate 10 tube from the fitting 7 to exit Teploobmennik environment can be performed with a diameter equal to the inner diameter of the heat transfer tubes 8. Thus the tubes 8 abuts the subsequent perforated plate 10, which prevents the slipping of the tube sheets under the action of forces in the axial direction from input to output-driven hydraulic resistance in the heat transfer pipe and the pressure difference between input and output. Bandages heat exchange tubes 8 may be made in the form of a wire spiral winding 12 (Fig.2), which turboservice annular flow, to set a fixed annular gap and eliminate friction heat exchange tubes 8 between them. The tubes 8 may be tightened in the beam clamps (not shown) or a wire 13 wound in a spiral, which is firmly and securely fixes them in a tight beam, which eliminates slack and vibration of heat exchanger tubes 8 and will abandon the pillars and walls, thereby reducing the hydraulic resistance with the ability to implement a pure countercurrent Teploobmennik environments at elevated speed of their movement. In option to reduce local hydraulic resistances and avoid ponding couch can be expanded in places fittings 2, 3 for input and output fluid made in the extended part with the tabs 14 and the shape of a hexagonal prism (not shown) for denser tube bundle.

During Assembly of the proposed heat exchanger in the casing 1 is inserted into a bundle of heat exchange tubes 8. Then from the entrance teploobmennye environment in the recess 4 is inserted into the inner perforated plate 9, while the tubes 8 pass through holes in the inner perforated plate 9. On the inner perforated plate 9 is placed a sealing material 11, filling the space between the heat exchange tubes 8 and the casing 1. Later in the recess 4 is inserted further perforated plate 10, with the tubes 8 also pass through holes in the subsequent perforated plate 10. On subsequent perforated plate 10 also fits the sealing material 11. To improve the reliability of sealing high temperature Teploobmennik environments at high pressure drops between them in the notch 4 is inserted into the at least one additional subsequent perforated plate 10, with the tubes 8 also pass through holes in an additional subsequent perforated plate 10. Thus, the increase in pressure differential between the high-temperature heat is bieniawski environments reliably solved by a simple increase in the number of subsequent perforated plates 10. Collected stuffing tube lattice is then clamped by the cover 2. Under pressure, the excess sealing material 11 fill in the gaps between the heat pipes 8, perforated plates 9, 10 of the gratings and the casing 1. Similarly, going to the tube grid output side teploobmennye environment of the pipe space with a reduced diameter holes in a further perforated plate 10 to the inner diameter of the heat transfer tubes 8.

The described heat exchanger operates as follows.

Through the nozzle 2 into the casing 1 is supplied to the coolant, which fills the annulus and is discharged through the nozzle 3. Through the nozzle 6 in the lid 5 is fed into the tube space teploobmennaja environment, which is displayed through the nozzle 7. The result is a heat transfer fluid and Teploobmennik environment.

In order to use existing methods of intensification of the heat exchanger with respect to physical and chemical properties Teploobmennik environments, the construction of the shell-and-tube heat exchanger allows you to:

- used for the manufacture of heat exchange tubes of any materials as metallic and non-metallic;

- apply heat exchange pipes of any diameter and thickness, it is known that the smaller the pipe diameter and wall thickness, the higher the coefficient of use of the project for the mass and volume of the heat exchanger;

- apply as smooth heat exchange tubes, and corrugated (bellows);

- apply heat exchange tubes of any profile, as well as the knurled annular or spiral grooves, the turbulent fluxes at the inner and outer surface of the pipe, intensifying the heat exchange;

to reduce the hydraulic resistance, refusing transverse and longitudinal partitions;

to improve maintainability with full disassembly at the elementary heat exchanger tubes and parts to replace any of them or cleaning both internal and external surfaces;

to refuse to join in blocks with parallel or series-parallel connection paths separate shell-and-tube heat exchangers with the missing surface area of heat transfer for the implementation of large heat flows or large pressure loss, since the proposed shell-and-tube heat exchanger has no restrictions on length and diameter and, consequently, the magnitude of the heat flow with little pressure loss.

Thus, implementation of the invention allow for the required maintainability, and simplicity and reliability of the heat exchanger without the use of proven methods of intensification of heat transfer without rapid growth of hydraulic resistance.

1. Shell-and-tube heat exchanger containing casing, provided with a socket for input and output coolant, cover with fittings for inlet and outlet Teploobmennik environment, and a bundle of heat exchange tubes, fixed in the holes in the tube sheets, consisting of inner and subsequent perforated plates with sealing material between them, characterized in that each tubular grille is provided with at least one additional subsequent perforated plate, the casing is made with the internal grooves on the ends, inner and subsequent plates, tube sheets clamped lids in the grooves of the casing and the tubes supplied with bandages.

2. Shell-and-tube heat exchanger under item 1, characterized in that the holes for the heat exchange tubes of the subsequent plate tube from the fitting to exit Teploobmennik environment is made with a diameter equal to the inner diameter of the heat exchange tubes.

3. Shell-and-tube heat exchanger under item 1, characterized in that the bands of heat exchange tubes made in the form of a wire spiral coiling.

4. Shell-and-tube heat exchanger under item 1, characterized in that the tubes strapped to the beam clamps or wire wound in a spiral.

5. Shell-and-tube heat exchanger according to any one of paragraphs.1-4, characterized in that the casing is extended to place the fittings for input and output of fluid and executed in the extended part with the tabs.

6. Shell-and-tube heat exchanger under item 5, characterized in that the casing has the shape of a hexagonal prism.



 

Same patents:

FIELD: machine building.

SUBSTANCE: unit is placed in a leakproof housing composed of two parts. The first (upper) part is a cover in the form of a hollow metal cylinder with semispherical end wall on the closed side and fitted by a flange - on the open side. The second (lower) part is a base on which all components of an electronic device are fixed. The electronic components are arranged inside the housing as follows: a group cooler on which the most heat releasing components are installed, is mounted on the base. Posts providing for fastening of a horizontal perforated shield above the said components are installed on the base, the remaining components with less heat release - printed circuit boards with radio elements - are mounted on the shield. The inlet hole provided in the cover is aimed at the supply of dielectric cooling liquid inside the housing, the liquid passes inside the housing and washes all electronic components cooling them, then it enters the channels present in the group cooler body providing for additional withdrawal of heat, afterwards it is drained through the outlet hole provided in the base. Internal channels increase the efficiency of heat transfer from the components installed on the group cooler. The cooling liquid is supplied to the housing under high pressure by means of an external pump and can be included in the common circulating flow of cooling agent of the whole spacecraft.

EFFECT: improved efficiency of cooling the devices comprising radio electronic components and power modules with different heat release levels, including those intended to be used in the state of weightlessness.

4 cl, 3 dwg

Dispensing chamber // 2525989

FIELD: machine building.

SUBSTANCE: dispensing chamber (5) is limited from outside by body (3), bottom (2) and grate (6) and interconnects central supply pipe (8) and side discharge channel (1) through a clearance between bottom (2) and end-face part of central supply pipe (8). Side discharge channel (1) is shaped by body (3) and central supply pipe (8). Grate (6) is installed in side discharge channel (1), while its porosity coefficient corresponds to a range from 0.3 to 0.8. The ratio of dimensions of chamber (5) corresponds to the conditions taking into account the interrelations, first of all, of a height of dispensing chamber (5) and inner diameter of central supply pipe (8); secondly, of a height of inlet into dispensing chamber (5) and inner diameter of central supply pipe (8); thirdly, of a height of dispensing chamber (5), a height of entrance into it and inner diameter of central supply pipe (8); fourthly, of a height of dispensing (5) and a height of entrance into it, radius of the lower part of body (3), inner and outer radii of central supply pipe (8); fifthly, of a distance from bottom (2) to step (7) at body (3) accordingly with the height of dispensing chamber (5) and with a radius of the lower part of body (3), a height of entrance into dispensing chamber (5), inner radius of central supply pipe (8); sixthly, of a radius of the lower part of body (3), inner radius of central supply pipe (8) and a height of entrance into dispensing chamber (5). The dimensions of a flowpath of dispensing chamber (5) are related with its hydrodynamic characteristics by a relation taking into account the mass flow rate of the working medium through a hole of grate (4), an average mass flow rate of the working medium through it, full pressure loss at grate (4), working medium density, average velocity of the working medium in central supply pipe (8), area of cross-section of a jet of the working medium falling on grate (6) jet of the working medium, a radius of the upper part of body (3), external radius of central supply pipe (8), reference radius of grate (6) and three empiric coefficients.

EFFECT: extending functional capabilities of a device at shaping a hydrodynamic irregularity at the exit of the dispensing chamber and simplifying its design.

5 cl, 1 dwg

FIELD: machine building.

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EFFECT: expanded functionality at forming hydrodynamic irregularity at the distributing chamber outlet and simplified design.

5 cl, 1 dwg

FIELD: heating.

SUBSTANCE: invention relates to the field of heat engineering, namely, to a system of guide discs for a heat exchanger, to a heat exchanger with application of the system of guide discs, to the method to manufacture a heat exchanger, and also to a set for equipment or re-equipment of the heat exchanger. The system of guide discs according to invention has multiple guide discs, which are designed to guide the medium flowing in the crisscross counterflow in the core of the heat exchanger and in the zone of the jacket between the core and the jacket surrounding the core. Each guide disc is made as capable of placement onto the heat exchanger core.

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Heat exchanger // 2502932

FIELD: heating.

SUBSTANCE: plate-like heat exchanger includes at least one heat exchange plate, and preferably a group of heat exchange plates. At least one of the heat exchange plates includes at least one section having corrugations intended for installation against the corresponding corrugations of the heat exchange plate of the corresponding structure. There are at least corrugations of the first type and at least corrugations of the second type. Location and number of corrugations of the first type and corrugations of the second type is different. Another object of the invention is a heat exchange plate including at least one section having corrugations intended for installation against the corresponding corrugations of the heat exchange plate of the corresponding structure. There are at least corrugations of the first type and at least corrugations of the second type; with that, number of corrugations of the first type and corrugations of the second type is different.

EFFECT: invention allows improving characteristics of a heat exchange plate.

14 cl, 9 dwg

Surface condenser // 2434192

FIELD: machine building.

SUBSTANCE: surface condenser for differential fluidisation of vapour components of mixed flow consists of at least two successively connected heat exchangers jointed to each other without end covers and tube bridges with their tubular grids so, that tubes of each preceding heat exchanger downstream mixed flow are elongated beyond outlet enclosure. Their diametre is less, than diametre of tubes of the next heat exchanger and are inserted inside of them forming a gap to drain condensed component. A cavity and channel for withdrawal of drained component are made in the outlet enclosure of the preceding heat exchanger or in an inlet enclosure of the next heat exchanger.

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9 cl, 7 dwg

FIELD: power engineering.

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EFFECT: increased strength, simplified manufacturing.

17 cl, 11 dwg

FIELD: power industry.

SUBSTANCE: in manufacturing method of radiator with radiator cover the strong flexible material is applied to upper side of radiator and/or at least to one side of the radiator cover, which faces the radiator, at least in some places by means of bonding or mechanical connection, and strong flexible material forms strong and resistant combination with the surface of the radiator and/or at least with one side of the radiator cover, which faces the radiator; at that, strong flexible material is applied to prior to application of powder coating of radiator and/or cover of the radiator; after powder coating has been applied, radiator together with the radiator cover is heated to hot drying temperature of powder coating; at that, owing to thermal effect the viscosity of strong flexible material changes so that the distance appears between the radiator cover and radiator, which excludes the contact of metals between radiator and at least one cover of the radiator; at that, viscosity of strong flexible material changes within temperature range of 120 to 180°C.

EFFECT: simple and economic manufacture, and eliminating the noise during operation.

4 cl, 3 dwg

Heat exchanger // 2410607

FIELD: heating.

SUBSTANCE: invention relates to the field of energy industry and can be used for repeated heating of various environments. The invention lies in the fact that in the heat exchanger, comprising a body with the feeding nipple and an outlet pipe and a tube placed in its cavity, made in the form of a coil with a straight start and the end portions connected to the feeding nipple and the outlet pipe, the casing is designed in the form of a siphon filled with hot water from the drain pipe, and the coil is made of a copper pipe with high heat dissipation, spring-wound and connected with one side through the valve with the inlet pipe of cold water, and the other - through the three-way cock with the circulation capacity that is welded to the electromotor, pipe is welded to the circulation tank, connected through a rubber compound with a storage capacity, which upper part is welded to a copper pipe embedded in the upper part of the circulation capacity and welded with a tin solder to the existing heat exchanger of the refrigerator, and the coil through the three-way valve can be connected to the heat exchanger of the gas column.

EFFECT: extension of the scope due to repeated use of hot water.

1 dwg

Attachment // 2386916

FIELD: power industry.

SUBSTANCE: in the attachment containing a support with cells for tubes, and a group clamp covering the cells, the support has one common cell per each pair of tubes, and clamp is made in the form of a rack with stops entering between adjacent tubes of each cell.

EFFECT: attachment design of the proposed type ensures reliable operation of a bank of spiral tubes of high heat stressed heat exchanger of nuclear power plant, as well as their equal spacing.

1 dwg

Heat exchanger // 2500965

FIELD: power engineering.

SUBSTANCE: heat exchanger comprises a vessel with the first and second channels for coolants and spherical heat transfer elements placed in spherical holes. Channels are separated with a heat transfer surface, inlet and outlet nozzles of the first channel, inlet and outlet nozzles of the second channel. Spherical heat transfer elements are placed in spherical holes on the heat transfer surface and on the inner surface of the vessel.

EFFECT: invention makes it possible to improve heat transfer from a heat transfer surface that separates channels of a heat exchanger.

2 dwg

FIELD: construction.

SUBSTANCE: wall is made according to the shape of the door frame. Outer elements of heat transfer are made in the form of supports, holders with cast-in cavities, fixators, door leaf and door handle. Supports are fixed to the outer surface. Holders and the door handle are fixed to another door leaf. Fixators are fixed to supports and partially arranged in cast-in cavities of holders. The door leaf is installed as capable of rotation.

EFFECT: invention makes it possible to expand arsenal of technical facilities.

2 dwg

FIELD: construction.

SUBSTANCE: metal heat exchanger of a room heating system comprises a pipeline with a wall with an outer surface, outer elements of heat transfer and their fixation to the outer surface. The wall is made according to the shape of the door frame. Outer elements of heat transfer are made in the form of supports, holders with cast-in cavities, fixators, door leaf and door handle. Supports are fixed to the outer surface. Holders and the door handle are fixed to the door leaf. Fixators are fixed to supports and partially arranged in cast-in cavities of holders. The door leaf is installed as capable of rotation.

EFFECT: invention makes it possible to expand arsenal of technical facilities.

2 dwg

FIELD: heating.

SUBSTANCE: shell-and-tube heat exchanger includes staggered bank of heat exchange tubes with variable longitudinal profile repeated with specified pitch throughout the length of tubes arranged with offset between adjacent tubes; at that, longitudinal tube profile includes straight sections and protrusions, and tubes are arranged in bank with alternation of cross sections of inter-tube space F1 and F2; at that, 0.4<F1/F2<0.6, where F1 - area of the section formed with protrusions of adjacent tubes, F2 - area of the section formed with straight sections of adjacent tubes and with alternation of lengths of channels of inter-tube space L1 and L2; at that, 0.2<L1/L2<0.4, where L1 - length of channels between the closest tops of protrusions of adjacent tubes, L2 - length of channel between tops of tube protrusions.

EFFECT: increasing heat release efficiency, and optimum intensification of heat exchange.

3 dwg

FIELD: manufacture of heat-exchange equipment, applicable in machine building.

SUBSTANCE: the jig has a supporting frame with intermediate and end processing supports positioned in it in two rows for fixation respectively of side walls and gas input and output chambers installed at the ends of the section. Each processing support has horizontal supporting platforms, and at least part of the processing supports has posts mounted on them with at least one coordinate-pendulum section of the surface put out for the overall dimensions of the outer surface of the respective wall of the manufactured section. At least one end support on each end of the jig is provided with a upper coordinate fixing member, the contact surfaces of these members on the opposite ends of the jug are installed with a height difference making up 0.002 to 0.009 of the jig working length with no allowance made for the summary length of the coordinate-fixing members.

EFFECT: provided a high-accuracy assembly of the heat-exchange section with exclusion of violations of the geometric parameters of the relative position of all its members.

4 cl, 2 dwg

FIELD: heat power engineering.

SUBSTANCE: heat exchange apparatus comprises housing, collectors with branch pipes for supplying and discharging first heat-transfer agent, branch pipes for input and output of the second heat-transfer agent from the housing and heat exchange pipe bundle with pipe plate, and structural members interposed between pipes to cause the second heat-transfer agent to flow around the pipe bundle in the transverse direction. The members are made of screw baffles provided with openings for the pipe bundle. The first heat-transfer agent flows in the pipe bundle. The heat exchange apparatus has two unmovable pipe plates or one unmovable pipe plate and one floating head, or one unmovable pipe plate and U-shaped pipes. The screw baffle is multirow. Between the rows are separating walls.

EFFECT: enhanced efficiency.

1 cl, 18 dwg

The invention relates to a tubular gas-liquid heat exchange apparatus radiator type and can be advantageously used in air cooling units (ACU) of the finned tubes, which are used in oil refining, gas and chemical industries for cooling energy, liquid technological products and condensation of their vapors, where the cooling agent is air, and can also be used in other industries for heating air with steam or water supply systems, heating and ventilation units, etc

Heat exchanger // 2160421
The invention relates to the technical objects of heat transfer, in particular to the design of tubular heat exchangers, and can be used to heat the gas agent, the air in the premises or in furnaces for various applications, including bakery

The invention relates to the field of heat exchangers and can be used as a heater or cooler gas and liquid media in industrial power engineering, chemical, food and other industries

FIELD: heat power engineering.

SUBSTANCE: heat exchange apparatus comprises housing, collectors with branch pipes for supplying and discharging first heat-transfer agent, branch pipes for input and output of the second heat-transfer agent from the housing and heat exchange pipe bundle with pipe plate, and structural members interposed between pipes to cause the second heat-transfer agent to flow around the pipe bundle in the transverse direction. The members are made of screw baffles provided with openings for the pipe bundle. The first heat-transfer agent flows in the pipe bundle. The heat exchange apparatus has two unmovable pipe plates or one unmovable pipe plate and one floating head, or one unmovable pipe plate and U-shaped pipes. The screw baffle is multirow. Between the rows are separating walls.

EFFECT: enhanced efficiency.

1 cl, 18 dwg

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