Multi-sectional heat exchanger

FIELD: heat power engineering.

SUBSTANCE: multi-sectional heat exchanger comprises sections made of at least two rectilinear pipes whose ends are provided with collectors which are interconnected in series through a tube bend. Each section is made of a set of pipes with piping collectors. The sections are parallel one to the other. The area of the cross-section of the bend tube is no less than that of the collector pipes.

EFFECT: reduced hydraulic drag and enhanced efficiency of heat exchanger.

3 dwg

 

The invention relates to heat exchangers, designed to heat flowing inside the heat exchanger fluid in the stream of hot gases, but can also be used in other devices for heating and cooling gas or liquid.

Known Novotrubny gasketed heat exchanger, made of several bundles of direct cooling tubes, each tube bundle are connected in series with a corresponding tube adjacent beam by means of a tubular knee (see the description of the invention to ed. St. the USSR # 85159, MKI 178, 502). With this design, if a large number of tubes in the beam, brazing or welding tubular knees with flange becomes difficult.

A known heat exchanger (prototype), including beams from at least two straight pipes, the ends of which are mounted collectors, which are connected with the tubular knee (see the description of the utility model No. 2861, MPK F 28 F 1/00).

With this design of the heat exchanger when the flow of fluid from the tubing into the reservoir, a reservoir in a tubular knee and so on sequentially widening, then narrowing again, the expansion of the fluid flow, which leads to an increase of the hydraulic resistance of the heat exchanger and from constantly changing the velocity of the flowing fluid inside to reduce heat e is the efficiency of the heat exchanger.

The present invention solves the problem of reducing the hydraulic resistance of the heat exchanger, the alignment of the velocity of the fluid in the heat exchanger, resulting in higher thermal efficiency of the heat exchanger.

To achieve the technical result of the proposed multi-section heat exchanger containing a section of the at least two straight pipes, the ends of which are mounted collectors, which are connected with the tubular knee, what is new is that each section is made in the form of a series of tubes with tubular headers, sections are parallel to each other, and a tubular knee made of pipes, the cross-sectional area not smaller cross-sectional area of pipe collectors, and are located on the diagonal of each section.

Execution collectors tubular sections and connect them by a tubular knees, the cross-sectional area not smaller cross-sectional area of pipe collectors, as well as the location of the tribes along the diagonals of each section provides the lowest hydraulic resistance of the fluid inside the heat exchanger and the alignment of the velocity in the pipe sections, respectively, and a maximum thermal efficiency of the heat exchanger. A parallel arrangement of sections provides efficient heat removal at high flow hot g the call, flowing pipe heat exchanger.

The proposed multi-section heat exchanger is illustrated in the drawings, figure 1-3.

Figure 1 shows a General view of the heat exchanger.

Figure 2 shows a top view of figure 1

Figure 3 shows the "A" in figure 1, the knee joint with collectors.

Multi-section heat exchanger consists of sections 1, each section 1 consists of several straight pipe 2 (at least two pipes). At the ends of the pipe 2 is installed tubular collectors 3. Each collector on the one hand has the cover 4. Collectors 3 of each section 1 are connected in series with knees 5. Knee 5 are located diagonally In each section 1. Section 1 are parallel to each other. The area of S1the cross-section of pipe collectors 3 is not less than the area S2the cross-section of the tubes of lap 5. Pipes, manifolds, elbows, end caps made of copper and are connected by soldering, hard soldering.

The heat exchanger works as follows.

The heat exchanger is placed in the stream of hot gases. The heat exchanger is leaking fluid, for example water, getting after entering the collector 3, it extends through the manifold and into the pipe 2. Of the pipe 2 enters again into the reservoir from the same section and then on the knee 5 enters the collector 3 of the next section and so on. Due to the fact that square pop the river cross-section of lap 5 is not less than the sectional area of the reservoir 3, differential velocities of fluid flow from the collector to the knee and again in the header of the next section is not observed. Therefore, the hydraulic resistance of the heat exchanger is small. The fluid passing through the heat exchanger, effectively heated in a stream of hot gases, sequentially passing between the tubes 2 are placed in parallel sections 1. Due to the fact that the tribe 5 is placed on the diagonal of each section 1, the liquid inside each partition is the biggest way, has a minimum hydraulic resistance and effectively heated. The heat exchanger can be made of steel, and the connection can be performed by a welding method.

Multi-section heat exchanger, including a section of the at least two straight pipes, the ends of which are mounted collectors, which are connected with the tubular knee, characterized in that each section is made in the form of a series of tubes with tubular headers, sections are parallel to each other, pipe elbows are made of pipes, the cross-sectional area not smaller cross-sectional area of pipe collectors, and are located on the diagonal of each section.



 

Same patents:

FIELD: heat exchange equipment, namely used in oil processing, chemical, gas, oil and power production industry branches.

SUBSTANCE: heat exchanger includes shell having bundle of heat exchanging tubes, inlet and outlet branch pipes for draining fluid from space between tubes, collector chamber connected with one end of shell and having branch pipes for inlet and outlet of tube fluid, collector tube wall and lengthwise heat insulated partitions mounted along axis of collector chamber and axis of shell. Lengthwise partition of shell is provided with sealing members in the form of packs of longitudinal bands arranged between partition and inner surface of shell symmetrically relative to lengthwise partition. In places where cross ends of sealing longitudinal bands adjoin to tube wall that is in trihedral angles, sealing units in the form of packs of bands or petal- or lug-shaped plates are mounted symmetrically relative to lengthwise heat insulated partition. Said packs are closely secured to tube wall; each band or plate is arranged in such a way that it adjoins to longitudinal bands and has camber to side of sealing longitudinal bands.

EFFECT: possibility for providing labyrinth seal of trihedral angle between inner surface of shell, sealing longitudinal bands and tube wall.

4 cl, 16 dwg

Heat-exchanger // 2282123

FIELD: heat-exchangers, particularly submersible ones.

SUBSTANCE: heat-exchanger comprises body perforated with orifices located at cylindrical inlet chamber height, tube plate, tube bundle arranged so that coolant is directed transversely to the tube bundle. Heat exchanger also has displacers and spacing grid. Hexahedral collector is formed on tube bundle at inlet chamber height so that the collector is coaxial to the body. The hexahedral collector perimeter is free of tubes. Radial channels extend from collector corners to tube bindle perimeter. The radial channels are also free from tubes. Displacers are installed in spacing grid below inlet chamber.

EFFECT: possibility of uniform coolant flow over each heat-exchanging tube, provision of equal temperature characteristics at each tube outlet and reduced vibration of tubes in tube bundle.

5 dwg

FIELD: heat transfer equipment, particularly used in furnaces characterized by descending combustion product movement, namely in power installations such as exhaust gas heat utilizing devices.

SUBSTANCE: heat-exchanger comprises heat-exchanging pipe bundle provided with hexahedral connection parts formed at pipe ends and defining tube and annular spaces. The heat-exchanger has annular shape in top view and has inner window adapted to convey solid particles, namely combustion products. Connection parts of the pipes are welded with each other. Annular spaces defined around the pipes are closed with separate plates made as elongated hexahedrons tangentially adjoining paired pipes and welded with each other. One heat-exchanging pipe is removed from both heat-exchanger sides relatively vertical axis thereof. Inlet and outlet connection pipes communicated with annular space for heat transfer agent receiving are welded to free hexahedral cells formed after heat-exchanging pipes removal. Cells from opposite sides of connection pipes are closed with caps.

EFFECT: increased heat-exchanger strength and heat-transfer efficiency, elimination of complicated structural units, possibility to adapt heat-exchanger for burners characterized by descending combustion product movement.

3 dwg

FIELD: heat exchange apparatus.

SUBSTANCE: surface heat exchanger comprises casing provided with bearing lags, lens compensator, pipe bench with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle that divides it into two sections. One of the sections is provided with the branch pipes for supplying and discharging of the fluid to be heated, and the other section defines the back water chamber. The pipe bench inside the housing is separated by the horizontal baffle provided with the by-pass port interposed between the lens compensator and back water chamber. The top and bottom sections of the pipe bench are separated with the vertical baffles arranged symmetrically to each other.

EFFECT: improved heat exchange and enhanced heat power and reliability.

1 dwg

FIELD: heat exchange.

SUBSTANCE: heat exchanger comprises housing with front and back supporting lags of different height, lens compensator, pipe bundle with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle which divides the pipe bundle into two sections. One of the sections is provided with branch pipes for supplying and discharging fluid to be heated, and the other section defines the back water chamber. The lens compensator is mounted in the vicinity of the back water chamber, and back supporting lag of the housing is provided with the additional supporting unit and mounted on the housing upstream or downstream of the lens compensator.

EFFECT: improved heat exchange and enhanced reliability.

1 dwg

FIELD: power engineering.

SUBSTANCE: heat exchanger comprises pipes with spiral-ring fins. The fins are provided with longitudinal slots. The pipes in the heat exchanger are arranged vertically.

EFFECT: enhanced efficiency.

3 dwg

The invention relates to the field of power engineering and can be used in the chemical and energy industries

The invention relates to heat exchange apparatus, namely, sections of tubular heat exchangers, and can be used to create air-to-air heat exchanger bypass turbojet engines

FIELD: power engineering.

SUBSTANCE: heat exchanger comprises pipes with spiral-ring fins. The fins are provided with longitudinal slots. The pipes in the heat exchanger are arranged vertically.

EFFECT: enhanced efficiency.

3 dwg

FIELD: heat exchange.

SUBSTANCE: heat exchanger comprises housing with front and back supporting lags of different height, lens compensator, pipe bundle with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle which divides the pipe bundle into two sections. One of the sections is provided with branch pipes for supplying and discharging fluid to be heated, and the other section defines the back water chamber. The lens compensator is mounted in the vicinity of the back water chamber, and back supporting lag of the housing is provided with the additional supporting unit and mounted on the housing upstream or downstream of the lens compensator.

EFFECT: improved heat exchange and enhanced reliability.

1 dwg

FIELD: heat exchange apparatus.

SUBSTANCE: surface heat exchanger comprises casing provided with bearing lags, lens compensator, pipe bench with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle that divides it into two sections. One of the sections is provided with the branch pipes for supplying and discharging of the fluid to be heated, and the other section defines the back water chamber. The pipe bench inside the housing is separated by the horizontal baffle provided with the by-pass port interposed between the lens compensator and back water chamber. The top and bottom sections of the pipe bench are separated with the vertical baffles arranged symmetrically to each other.

EFFECT: improved heat exchange and enhanced heat power and reliability.

1 dwg

FIELD: heat transfer equipment, particularly used in furnaces characterized by descending combustion product movement, namely in power installations such as exhaust gas heat utilizing devices.

SUBSTANCE: heat-exchanger comprises heat-exchanging pipe bundle provided with hexahedral connection parts formed at pipe ends and defining tube and annular spaces. The heat-exchanger has annular shape in top view and has inner window adapted to convey solid particles, namely combustion products. Connection parts of the pipes are welded with each other. Annular spaces defined around the pipes are closed with separate plates made as elongated hexahedrons tangentially adjoining paired pipes and welded with each other. One heat-exchanging pipe is removed from both heat-exchanger sides relatively vertical axis thereof. Inlet and outlet connection pipes communicated with annular space for heat transfer agent receiving are welded to free hexahedral cells formed after heat-exchanging pipes removal. Cells from opposite sides of connection pipes are closed with caps.

EFFECT: increased heat-exchanger strength and heat-transfer efficiency, elimination of complicated structural units, possibility to adapt heat-exchanger for burners characterized by descending combustion product movement.

3 dwg

Heat-exchanger // 2282123

FIELD: heat-exchangers, particularly submersible ones.

SUBSTANCE: heat-exchanger comprises body perforated with orifices located at cylindrical inlet chamber height, tube plate, tube bundle arranged so that coolant is directed transversely to the tube bundle. Heat exchanger also has displacers and spacing grid. Hexahedral collector is formed on tube bundle at inlet chamber height so that the collector is coaxial to the body. The hexahedral collector perimeter is free of tubes. Radial channels extend from collector corners to tube bindle perimeter. The radial channels are also free from tubes. Displacers are installed in spacing grid below inlet chamber.

EFFECT: possibility of uniform coolant flow over each heat-exchanging tube, provision of equal temperature characteristics at each tube outlet and reduced vibration of tubes in tube bundle.

5 dwg

FIELD: heat exchange equipment, namely used in oil processing, chemical, gas, oil and power production industry branches.

SUBSTANCE: heat exchanger includes shell having bundle of heat exchanging tubes, inlet and outlet branch pipes for draining fluid from space between tubes, collector chamber connected with one end of shell and having branch pipes for inlet and outlet of tube fluid, collector tube wall and lengthwise heat insulated partitions mounted along axis of collector chamber and axis of shell. Lengthwise partition of shell is provided with sealing members in the form of packs of longitudinal bands arranged between partition and inner surface of shell symmetrically relative to lengthwise partition. In places where cross ends of sealing longitudinal bands adjoin to tube wall that is in trihedral angles, sealing units in the form of packs of bands or petal- or lug-shaped plates are mounted symmetrically relative to lengthwise heat insulated partition. Said packs are closely secured to tube wall; each band or plate is arranged in such a way that it adjoins to longitudinal bands and has camber to side of sealing longitudinal bands.

EFFECT: possibility for providing labyrinth seal of trihedral angle between inner surface of shell, sealing longitudinal bands and tube wall.

4 cl, 16 dwg

FIELD: heat power engineering.

SUBSTANCE: multi-sectional heat exchanger comprises sections made of at least two rectilinear pipes whose ends are provided with collectors which are interconnected in series through a tube bend. Each section is made of a set of pipes with piping collectors. The sections are parallel one to the other. The area of the cross-section of the bend tube is no less than that of the collector pipes.

EFFECT: reduced hydraulic drag and enhanced efficiency of heat exchanger.

3 dwg

FIELD: heating.

SUBSTANCE: invention can be used for heating liquid and gas in technological processes of oil refining, petrochemical, gas and other industries. Heat exchanger contains a casing, pipe walls and grates with heat exchange pipes. Between transverse walls damping baffles that contain rectangular disk packages mounted between rows of pipes parallel to each other in a transverse plane exchanger, and rectangular disk packages of rectangular cross section mounted between rows of pipes parallel to each other in another heat exchanger transverse plane are installed.

EFFECT: increase of endurance.

3 cl, 7 dwg

Vortex apparatus // 2341335

FIELD: mechanics.

SUBSTANCE: vortex apparatus comprises casing wit upper and lower covers, the lower one making a condensate collector, gas inlet/outlet and condensate outlet branch pipes, partitions, vortex pipe, initial compressed gas flow rate control device and condensate-separation units. Aforesaid vortex pipe includes a cold flow and hot flow pipes. Initial compressed gas flow rate control device incorporates a screw-type tightening device (STD) with adjusting washer furnished with a cross-piece with stem arranged in the STD membrane hole. The said stem passes via the cold flow pipe and through the gland in the upper cover out from the apparatus and is furnished with the rotation drive. The condensate-separation units comprise pipe laid between the said partitions, two pairs of crosswise slots arranged opposite to each other on the hot flow pipe at the distance of (1.25 to 1.45) d, where d is the pipe ID, from the STD edge and shifted relative to each other by 90°. Note that the said slots are arranged along the axis at the distance of (0.15 to 0.25) d. The circular chamber outlet channels, inside the hot flow pipe, are terminates at the gap between the casing wall and thin-wall cylinder. The hot flow pipe outlet is furnished with a nozzle and thin-wall cylinder is provided with confuser-diffuser element making an injector.

EFFECT: control over initial compressed gas flow rate by external effects and higher efficiency of condensation-separation processes.

1 cl, 4 dwg

FIELD: heating.

SUBSTANCE: invention is of relevance for operation of apparatus for air cooling of gas and is to be utilised in power engineering industry. The proposed method of the heat exchanger apparatus fabrication envisages the following activities: fabrication of finned heat exchange tubes, a framework, at least a single apparatus section with lateral walls and beams joining them together, gas inlet and outlet chambers; packing the section with a bundle of finned one-way-flow heat exchange tubes; fabrication of a manifold for gas supply and removal, a support structure and their assembly. The section walls are represented by channel bars with shelves turned towards the tubes and are equipped with fairing displacers forming the U-bar reinforcement ribs. One of the methods of the apparatus heat exchanger section fabrication envisages positioning an optimal number of tubes within the section in accordance with the dependence specified within the framework of the invention concept. An alternative method envisages assembly of the section elements on a holding frame designed within the framework of the invention concept. A third method envisages assembly of the elements in a specific sequence combined with performance of hydraulic pressure testing. The method of fabrication of the apparatus chamber for gas inlet or outlet envisages manufacture of the chamber elements and their assembly in a sequence developed within the framework of the invention concept. The method of fabrication of the gas delivery and removal manifold envisages manufacture of the manifold body sections and their assembly with the help of the tool tab designed within the framework of the invention concept. Method of hydraulic pressure testing of the apparatus sections envisages mounting the section to be tested on the hydraulic test bench designed within the framework of the invention concept with the pressure increase and drop modes as per the dependence given. Method of the manifold hydraulic pressure testing envisages it being mounted on the hydraulic test bench or a loft with the help of support structures designed within the framework of the invention concept.

EFFECT: enhanced effectiveness and precision of assembly of the apparatus and elements thereof combined with reduction of labour and material consumption, reduction of hydraulic losses occurring in the apparatus as well as technological simplification of the hydraulic pressure testing of heat exchanger sections and manifolds of the apparatus for air cooling of gas, improved effectiveness and reduced labour intensity of their performance.

25 cl, 30 dwg

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