SU1249296A1 - Shell-and tube heat exchanger - Google Patents

Description

I 1

The invention relates to heat-exchanging apparatuses and can be used for cooling gases in the oil, gas, petrochemical and other branches of the national economy.

The purpose of the invention is to intensify heat transfer, increasing compactness and manufacturability.

Fig, 1 shows the proposed shell-and-tube heat exchanger; in fig. 2 is a view A of FIG. one.

The shell-and-tube heat exchanger contains concentrically placed outer 1 and inner 2 shells with a bundle of tubes 3 between them, fixed in tube plates 4 and 5. In the annular space there is a screw partition 6. medium tube space. To the outer shell 1 is connected a pipe 1 1 for supplying the annular space. The inner shell 2 is shifted to krppka 8 and tightly connected with it and the tube plate. An additional tube bundle 12 for the third medium is installed inside the shell 2, reinforced on one side in tube plate Aj and on the other in an additionally installed cover 13 with the formation of a collecting chamber 14 for the annulus environment. An annular partition 15 is formed between the clamp 7 and the tube plate 4, which forms the collecting chamber of the third medium with the discharge pipe 16. At 13, the distributing collector 17 with the inlet pipe 18 of the third is made.

The pipe 19 of hydrophilic material is installed along the axis of the heat exchanger. The inner shell 2 is made of a two-layer with an inner layer of hydrophilic material. In intertube20

49296i

The space of the additional tube bundle 12 is installed with a screw partition 20 with the opposite direction of twist relative to 5 to partition 6. The partition 21 placed between the cover 7 and the tube plate 4 forms the distributing and collecting collectors of the medium of the tube space connected respectively to the pipes 9 and 10.

Shell-heat exchanger operates as follows.

Compressed gas through inlet pipe 15 1 1

ku 11 enters the screw channel

the heat exchanger formed by the outer 1 and inner 2 shells. and the screw partition 6 passes through it, releasing heat to the cooling medium flowing through the pipes 3, and enters the inner screw channel formed by the inner shell 2, the central tube 19 and the screw partition 20. Passage through this channel, the compressed gas releases heat to the medium flowing through the pipes 12 and is discharged through the collecting chamber 14. The cooling medium enters the heat exchanger through the nozzle 30, passes through the pipes 3 and is removed through the nozzle 10. Another ayuscha medium through nozzle 18 enters the distributing manifold 17, flows through the pipes 12 and removed - a heat exchanger 35 through the pipe 16.

The use of the invention allows to intensify the heat exchange process, improve manufacturability 40 and compactness of the heat exchanger due to the functional combination of the two stages of cooling the compressed air in one unit and ensure that the condensate is removed from the cooled air.

25

view A

Edited.M.Blanar

Compiled by M.Kosorotov

Tehred I.Gaydosh Corrector M.Sharoshi

Order 4220/38 Circulation 589. Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. g

Claims (2)

1. A shell-and-tube heat exchanger containing concentrically placed outer and inner shells with a tube bundle between them, mounted in tube plates, a screw partition located in the annulus, end caps and nozzles for supplying and discharging media of the pipe and annular spaces, characterized in that that, in order to intensify heat transfer, increase compactness and manufacturability, in it the inner shell is displaced to one of the covers and hermetically connected to it and the corresponding tube plate, and inside this shell and an additional tube bundle for a third medium is installed, fixed on one side in a tube plate not connected to the inner shell, and on the other hand in an additionally installed cover with the formation of a collecting chamber for the annulus, and a pipe made of hydrophilic material is installed along the axis of the heat exchanger, a. in the annular space of the additional tube bundle, there is a screw baffle with the opposite direction of twist with respect to the baffle installed between the shells. 2. The heat exchanger according to claim 1, characterized in that the inner shell is made of two layers with an inner layer of hydrophilic material. EJ__j__ From FIG. 1 f