SU1114873A1 - Collector chamber of vertical shell-and-tube film-type heat exchanger - Google Patents

Abstract

Collecting chamber vertical shell FILM TEPLOOB / ENNIKA partitioned with stilling sidewall of the central cavity, which houses the dispenser, and an annular cavity provided with a float rigidly associated with the distribution device, characterized in that, in order to increase its robustness, cavity the cameras are interconnected by inverted U-shaped tubes. L 1517 I

Description

This invention relates to heat engineering and can be used in the chemical and related industries.

A known liquid dispenser in a tubular film tag-exchange apparatus, comprising a liquid tank with openings in the bottom for pipes 1.

The specified distributor cannot be used for operation in polluted environments.

A collector chamber of a vertical film heat exchanger is known, divided by a calming shell into a central cavity in which a distribution device is dispersed, and an annular cavity equipped with a float rigidly connected to a distribution device of a grooved type (2).

However, when working with polluted media, there is a difficulty in preventing pipe clogging with solid inclusions, which will lead to a decrease in the operational reliability of the known apparatus.

The purpose of the invention is to increase the operational reliability of the camera.

The goal is achieved by the fact that in the collector chamber of a vertical shell-and-tube film heat exchanger divided by a calming shell into a central cavity with a distribution device and an annular cavity equipped with a float rigidly connected to a distribution device, the cavities of the chamber communicate with each other through inverted U- shaped tubes.

FIG. 1 shows a heat exchanger with a collector chamber, a longitudinal section; in fig. 2 shows section A-A in FIG. .

A vertical film type heat exchanger consists of a body 1, a tube bundle 2, partitions 3 forming sections 4 in which spiral partitions 5 are installed. Partitions 3 have openings 6 for the passage of fluid from one section to another, placed alternately in the center of the apparatus and between the body I and beam 2. Supply and removal of fluid from the annular space is carried out respectively through shtyutsera 7 and 8.

A collector chamber 9 is placed in the upper part of the heat exchanger, in which a calming shell 10 is installed, forming a central 11 and an annular 12 cavity. In the central cavity 11 there is a distribution device consisting of a disk 13 provided with inserts 14, freely entering pipes 2 and forming annular gaps 15 therewith for the passage of fluid. In the annular cavity 12, the float 16 is spaced; by means of the brackets 17, it is rigidly connected with

switchgear. The central 11 and ring 12 cavities communicate with each other by inverted U-shaped tubes 8, the open ends of which face the bottom of the collecting chamber 9. At one of the ends of the U-shaped tube 18, located in the annular cavity 12, a branch pipe 9 is screwed. the collector chamber 9, the liquid flows through the nozzle 20 and is discharged from the heat exchanger from the bottom through the nozzle 21.

When the heat exchanger is working, the fluid through the nozzle 7 enters the annular space, moves upward along the curvilinear trajectory formed by the spiral partitions 5, the passage is successively through the opening 6 in the partitions 3 of the section 4, and is discharged through the clamp 8. Another fluid flows through the nozzle 20 into the annular cavity 12, the collector chamber 9, then into the central cavity 11 and then through the annular gaps 15 enters the inner surface of the bundle 2, the film flows down and is discharged from the apparatus through the fitting 21.

As the annular cavity 12 is filled with liquid, the float 6 gradually emerges with the disk 13 rigidly connected with it. When reaching the annular cavity 12 of the liquid level H equal to the height of the U-shaped tube 18, the liquid through the tube 18 presses to flow into the central cavity 12 (according to the principle of siphon operation). Gradually, the fluid level in the annular cavity 11 decreases to the level H - the level of the open end of the U-shaped tube 18 located in this cavity. Thereafter, the flow of fluid from cavity 11 into cavity 12 is stopped, cavity II is again filled with fluid to level H, and the process of flow repeats periodically. At the same time, synchronously with the periodic change in the level of the liquid in the annular cavity 11, the disk 13 provided with inserts 4 and rigidly connected with the float 16 located in the annular cavity oscillates in the vertical direction, the amplitude of oscillations being equal to the distance H and being controlled from. with the power of a U-tube 18 screwed on nozzle 19, and the oscillation frequency is determined by the diameter of the U-tube and their number.

With periodic flow of fluid from the annular cavity to the central, a pulsating flow into the pipes is created, which contributes to the intensification of heat exchange, and the movement of the inserts inside the pipes prevents clogging of the annular gaps and extends the non-stop operation of the proposed apparatus and the reliability of its operation.

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Claims (1)

A COLLECTOR CAMERA OF A VERTICAL SHELL-TUBE FILM HEAT EXCHANGER divided by a soothing casing into a central cavity in which a distribution device is located, and an annular cavity equipped with a float rigidly connected to the distribution device, characterized in that, in order to increase its operational reliability, the cavity is connected between them by inverted U-shaped tubes.