The heat exchanger
(57) Abstract:The invention is intended for use in heat exchange technology. The heat exchanger contains inlet and outlet pipes of the cooler and the coolant enclosure, inside of which is placed the upper and lower plate and tube bundle. According to the invention each tube bottom is made of two plates forming between them a closed cavity, the tubes of the tube bundle are rigidly connected to the plates of the bottoms through the sleeve, and the lower part of the tube bundle is fixed in the movable bottom plate, and bottom plate provided with a conical Radome, the body of which is made channels, connected with the cavity between the plates of the lower plate and through the compensator with the inlet pipe cooler, with one of the plates of each plate in contact with fluid, has a thickness of SPL= (0,26 - 0,5)dTrnwhere dTrn- the outer diameter of the tube, and it is made of heat-exchange fins, and the body is made of double-layer, on the inner surface of which are heat-exchanging ribs. The invention improves the reliability of the heat exchanger. 2 C. p. F.-ly, 4 Il. The invention relates to heat engineering, in particular to Efteling devices.The closest in technical essence of the present invention is a heat exchanger containing a tube bundle, fastened the lower part of the pipe in the bottom, and the supply device into the cavity of the bottom of the cooler and the subsequent drainage of the cavity. C. N 574593, MKI F 28 D 7/00, F 28 F 9/02, 1977 - prototype).The main disadvantages of this device are insufficient cooling zones of high thermal stresses in the mounting locations of the tube bundle in the upper and lower ends, which limits the upper limit temperature of the coolant at the inlet of the heat exchanger, and the lack of compensation of thermal deformation of the tube bundle, which reduces the reliability of the heat exchanger (TA) in General. The objective of the invention is to remedy these disadvantages and to create a reliable and efficient high temperature TA.This object is achieved in that in the proposed heat exchanger containing inlet and outlet pipes of the cooler and the coolant enclosure, inside of which is placed the upper and lower plate and tube bundle according to the invention each tube bottom is made of two plates forming between them a closed cavity, the tubes of the tube bundle in the bottom, moreover, the bottom plate provided with a conical Radome, the body of which is made channels, connected with the cavity between the plates of the lower plate and through the compensator with the inlet pipe cooler, with one of the plates of each plate in contact with fluid, has a thickness of SPL= (0,26 - 0,5)dTrnwhere dTrn- the outer diameter of the tube, and it is made of heat-exchange fins, and the body is made of double-layer, on the inner surface of which are heat-exchanging ribs.When using plates with SPL< 0,26 dTrnthe influence of the fins slightly, and the possible loss of hermeticity of a closed cavity between the plates.When performing inserts with SPL> 0.5 dTrnthe surface temperature of the wafer-side fluid is significantly increased, which can lead to local overheating of the material of the plate.To compensate for thermal expansion of the lower part of the tube bundle is fixed in the movable bottom plate, which is connected with the compensator in the form of bellows.To reduce the hydraulic resistance, reversal and additional cooling part of the heat carrier bottom of the layer.To increase the efficiency of heat transfer on the inner layer of the body has heat transfer fins.To increase the conductivity of one of the plates of each tube of the bottom in contact with the fluid made of a material based on copper.The invention is illustrated by drawings, where Fig. 1 shows a longitudinal section of THE Fig. 2 - element And Fig. 1, in Fig. 3 - section b-B in Fig. 2, in Fig. 4 - section b-b of Fig. 1.The main constituent elements of the proposed device are:
1 - the bottom-top;
2 - the bottom of the bottom;
3 - plate;
4 - plate;
5 - tube;
6 - connecting sleeve;
7 - rib;
8 - fairing;
9 - compensator;
10 - block;
11 - nozzle;
12 - nozzle;
13 - nozzle;
14 - nozzle;
15 is an annular gap;
16 - collector;
17 - distributing pipe;
18 - hole;
19 - collector;
20 - collector;
21 - intercostal space;
22 - collector;
23 - the inner layer of the body.The heat exchanger is equipped with pipe ends 1 and 2, consisting of plates 3 and 4, forming between them a closed cavity, with flowing inside the tubes 5 and sedentarist tube bundle is fixed in the movable plate 2, have conical fairing 8 and a temperature compensator 9. The upper plate 1 is rigidly connected to the housing 10. The supply and drainage of fluid are carried out through the pipes 11 and 12 respectively. The cooler is supplied via the pipe 13 and is discharged through pipe 14. The annular gap 15 for flow of the heat carrier is connected to the collector 16. Distributing pipe 17 through the holes 18 is connected to the collector 19 and through the tube 5 with the reservoir 20. Intercostal space 21 is connected to the collector 22. Power housing comprises an outer housing 10 and inner layer 23.The heat exchanger works as follows.Coolant with high temperature, is fed through the pipe 11 into the Central part THAT expands transversely flowing around the heat exchange tubes, and through the annular gap 15 between the casing and the tube bundle is fed into a collecting reservoir 16, where and discharged through the pipe 12.Cooler, as the environment with a higher inlet pressure, is supplied through the pipe 13 into the distributing pipe 17, the cooling compensator 9, fairing 8, plates 3, 4 of the bottom 2, through holes 18 enters the manifold 19, it is distributed through the pipes 5, going to the manifold 20, flowing in a closed cavity intercostal space 21, additionally cools the coolant then flows into the manifold 22 and is withdrawn through pipe 14.The use of the invention makes it possible to intensify the process of heat transfer due to more developed heat transfer surfaces of the plates 4, the inner layer 23, fairing 8, significantly raise the temperature of the coolant at the entrance to TA and reliability at the expense of efficient cooling plates 4 heads 1 and 2, the mobility of the lower plate 2 and the application of the compensator 9. 1. The heat exchanger containing the inlet and outlet pipes of the cooler and the coolant enclosure, inside of which is placed the upper and lower heads and a bunch of tubes, wherein each tube bottom is made of two plates forming between them a closed cavity, the tubes of the tube bundle are rigidly connected to the plates of the bottoms through the sleeve, and the lower part of the tube bundle is fixed in the movable bottom plate, and bottom plate provided with a conical Radome, the body of which is made channels, connected with the cavity between the plates of the lower plate and through the compensator with the inlet pipe cooler, when one of the plates of each plate in contact with fluid, has a thickness of SPL= (0,26 -, the case is made of double-layer, on the inner surface of which are heat-exchanging ribs.2. The heat exchanger under item 1, characterized in that one of the plates of each tube of the bottom in contact with the fluid made of a material based on copper.3. Heat exchanger according to PP. 1 and 2, characterized in that the compensator is made in the form of bellows.
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.
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.
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.
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.
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.
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.
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
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
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