The heat exchanger

 

(57) Abstract:

Usage: mainly in the energy, chemical, oil, food and dairy industries. The inventive tubular slotted heat exchanger comprises a sealed enclosure in the form of a rectangular parallelepiped with the ties and seals. On one pair of opposite faces of it are inlet and outlet pipes for one of Teploobmennik environments, on the other hermetically closed by removable covers open. The heat exchange elements are cantilever mounted on the inner surfaces of the covers and is in communication with the inlet and outlet manifolds. Each heat exchange element is made in the form of a set of parallel P and M-shaped tubes. The heat transfer elements are located in the same plane with a gap relative to each other and connected by their ends to inlet and outlet collectors. The latter is installed on the external surfaces Windows. 7 C. p. F.-ly, 7 Il.

The invention relates to heat exchange apparatus and can be used in power, chemical, oil, food, dairy industry and other sectors of the economy.

Known slit plate apeture angles and fixed to the frame, which serves as a support for sleeves and nipples, stretched through the passages in the plates attached to the outer pipe for the supply of two Teploobmennik environments [1] Plate pressed against the fixed side frame cover with the other side cover, and the cover are fixed side bolts. On the plates filler plates, which are intended to remove internal contamination and flow direction (usually the current through relatively narrow passages between alternating pairs of heat exchanger plates. The flow part of both circuits are assembled in a sequential scheme.

The disadvantage of this device is the large number of curly rubber gaskets, inefficient use of heat exchange surfaces of the plates, the complexity of Assembly and disassembly when cleaning the heat exchanger, the presence of sequential schemes currents Teploobmennik environment, which can lead to failure when the failure or blockage of even one of the plates.

Known plate-fin heat exchanger, consisting of metal plates, separated from each other alternately metal is dcoi to prevent one Teploobmennik environment in the channels, designed for the movement of the other environment. Corrugated sheets, partitions and side mounting picked, securely tighten using a clamping device and then sealed with hard solder. In this heat exchanger flow of the contours Teploobmennik environments organized by the parallel scheme.

A disadvantage of this device is the complexity of disassembly and Assembly for mechanical cleaning.

Closest to the proposed plate is slotted heat exchanger containing a sealed enclosure with the ties and seals in the form of a rectangular parallelepiped, on one pair of opposite faces of which are inlet and outlet pipes for one of Teploobmennik environments, and on the other box, sealed with a removable lid, on the inner surface of which a cantilever heat exchange elements connected with distributing and collecting manifolds [3]

The disadvantage of this technical solution is the presence of a large number of rubber gaskets and inefficient use of the heat transfer surfaces of the plates.

To address these shortcomings in the heat exchanger, the PE the opposite faces of which are inlet and outlet pipes for one of Teploobmennik environments and on another box, sealed with a removable lid, on the inner surface of which is fixed heat exchange elements connected to inlet and outlet manifolds, offered each heat exchanger element to perform in the form of a set of parallel P - and M-shaped tubes arranged in a single cavity with a gap relative to each other, and to connect their ends to inlet and outlet collectors placed on the outer surfaces of the Windows.

In Fig. 1 schematically shows a tubular slotted heat exchanger in a disassembled state, and Fig. 2 and 3, various design options of the organization for supplying and discharging the working environment of Fig. 4 and 5 are cross-sections of the heat exchanger with different designs distributing and collecting manifolds of Fig. 6 and 7, the heat transfer elements with P - and M-shaped tubes, respectively.

The heat exchanger includes a housing 1 in the form of a rectangular parallelepiped. Hermetic casing 1 is provided with ties 2 rubber seals 3. On one pair of opposite faces 4 of the housing 1 are located the inlet 5 and outlet 6 connections for one of Teploobmennik environments. On the other pair of opposite faces 7 has Windows 8, Germania elements 10, communicating with the inlet 11 and outlet 12 collectors. Each heat exchanger element 10 is made in the form of a set of parallel P - and M-shaped tubes 13. Tubes 13 are located in the same plane with a gap relative to each other and connected by their ends to the inlet 11 and outlet 12 collectors located on the outer surfaces of Windows 8.

Tube 13 have a non-circular cross-section, and their outer surfaces are energizers stream 14. Tube 13 of the heat exchange elements 10 located on different caps 9 are of different diameters.

The inlet 5 and outlet 6, the nozzles are parallel to the plane of the heat exchange elements 10.

There are various options for connection of the collectors 11 and 12 with the tubes 13 of the heat exchange elements 10. For example, the inlet 11 and outlet 12 of the collector in the form of cameras, which include, respectively, the input 15 and output 16 the ends of the tubes 13 all of the heat exchange elements 10 (Fig. 2) or a single element 10 (Fig. 3). In addition, the inlet 11 and outlet 12 collectors can be made in the form of a set of cameras, each of which combines all input 15 or weekend 16 the ends of the tubes of the heat exchange elements 10, leadin teploobmennaja environment from the inlet pipe 5 flows into the internal cavity of the housing 1, washes the outer surface of the system heat exchanger elements 10 and through the outlet pipe 6 is removed from the heat exchanger. Another teploobmennaja environment from the supply reservoir 11 flows into the tubes 13 of the heat exchange elements 10, enters the outlet manifold 12 and withdrawn from the heat exchanger. When the heat exchanger is to transfer heat from one Teploobmennik environment to another by heat transfer through the walls of the tubes 13. In the heat exchanger may connect the inlet of the reservoir 11 to the total pressure tube and connect the outlet of the reservoir 12 to a common discharge outlet.

1. A heat EXCHANGER containing a sealed enclosure in the form of a rectangular parallelepiped with the ties and seals, on one pair of opposite faces of which are inlet and outlet pipes for one of Teploobmennik environments, and on the other box, sealed with a removable lid, on the inner surface of which a cantilever heat exchange elements connected to inlet and outlet manifolds, wherein each heat exchange element is made in the form of a set of parallel P - and M-shaped tubes, RESPA and outlet collectors, located on external surfaces Windows.

2. The heat exchanger under item 1, characterized in that the tubes have a non-circular cross-section.

3. The heat exchanger under item 1, characterized in that on the outer surfaces of the tubes are energizers.

4. The heat exchanger under item 1, characterized in that the inlet and outlet pipes are located parallel to the plane of the heat exchange elements.

5. The heat exchanger under item 1, characterized in that the tubes of the heat exchange elements located on different caps have different diameters.

6. The heat exchanger under item 1, characterized in that the inlet and outlet manifolds are made in the form of cameras, combining respectively the input and output ends of all tubes of the heat exchange elements.

7. The heat exchanger under item 1, characterized in that the inlet and outlet manifolds are made in the form of a set of cameras, each of which combines respectively the input and output ends of the tubes of one of the heat exchange element.

8. The heat exchanger under item 1, characterized in that the inlet and outlet manifolds are made in the form of a set of tubes, each of which combines all of the input or output ends of the tubes, Teploobmen the

 

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FIELD: mechanics, heating.

SUBSTANCE: in compliance with the invention, the heat exchanger-modular water heater incorporates one or two modules each comprising, at least, two heat exchanger units integrated by a diffuser to feed a cooling medium and a confuser to withdraw the medium to be cooled, primarily, a turbine hot exhaust gas. It also comprises the manifolds feeding and withdrawing the medium being heated, primarily, air, each communicating, via a tube plate, with, at least, one multi-row bank of multipass heat exchange pipes, the various pipes being furnished with bends varying in number from four to six and forming four rectilinear runs combining their three bends. Note here that the spacing in, at least, one direction, within the band cross section, of a part of the pipes or within their limits, or of, at least, one bank of the pipes out coming from the medium feed manifold, or, at least, in one of the next runs in the same direction does not comply with that of the pipes or a part of them in their bank run right nearby the manifold withdrawing the medium being heated and/or in one of the previous bank runs. The unit of the heat exchange-modular air heater comprises four runs of the heat exchanger pipe multi-row four-pass bank, the said pipes being laid in horizontal rows spaced in horizontal and vertical planes, the manifolds feeding and withdrawing the medium being heated, each being connected, via separate tube plates, with heat exchanger pipes, each tube plate being mounted in the aforesaid manifold walls. Note here that the spacing in, at least, one direction, within the band cross section, of a part of the pipes or within their limits, or of, at least, one bank of the pipes out coming from the medium feed manifold, or, at least, in one of the next runs in the same direction does not comply with that of the pipes or a part of them in their bank run right nearby the manifold withdrawing the medium being heated and/or in one of the previous bank runs. In compliance with the proposed invention, the aforesaid heat exchanger unit-modular air heater comprises a carcass, a bottom, and upper and lower casing walls, a diffuser to feed the medium to be cooled and a confuser to feed the aforesaid medium, manifolds feeding and withdrawing the medium to be heated and furnished with tube plates that form, in every row, an even number of rectilinear multi-pipe banks including, at least, two inner and two outer banks integrated by constant-radius bends. Note here that the unit housing bottom, cover and one of the side walls represent panels with a reinforcement framing elements forming a flat rod systems, while the unit carcass is formed by a set of the aforesaid flat rod systems with intermediate posts inter jointing the aforesaid systems and the manifolds housings rigidly fixed thereto and, in their turn, attached to the unit bottom and inter jointed via two-ring diaphragms and a pipe medium displacer. Note that the parts of the aforesaid manifolds housings with the aforesaid tube plates and pipe medium displacer fitted therein form, when combined, the unit housing rigid face wall while the side walls allow fastening the diffuser and confuser elements. Note here also that the spacing in, at least, one direction, within the band cross section, of a part of the pipes or within their limits, or of, at least, one bank of the pipes out coming from the medium feed manifold, or, at least, in one of the next runs in the same direction does not comply with that of the pipes or a part of them in their bank run right nearby the manifold withdrawing the medium being heated and/or in one of the previous bank runs. In compliance with this invention, the aforesaid heat exchanger unit-modular air heater incorporates a multi-row heat exchanger pipe bank made up of, at least, two bundles of two-pass U-pipes forming, within one bundle, two-run horizontal rows of pipes spaced apart both in rows and between rows, manifolds of feeding and withdrawing the medium being heated and, at least one bypass chamber arranged there between. Note here that the aforesaid manifolds and the bypass chamber communicate with the heat exchanger pipes via a common tube plate or separate tube plates, at least, one part of the said plates forming a part of the aforesaid manifolds enclosure walls. Note also here that the spacing in, at least, one direction, within the band cross section, of a part of the pipes or within their limits, or of, at least, one bank of the pipes out coming from the medium feed manifold, or, at least, in one of the next runs in the same direction does not comply with that of the pipes or a part of them in their bank run right nearby the manifold withdrawing the medium being heated and/or in one of the previous bank runs.

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