RU1768215C - Contact device for heat and mass exchanging apparatus - Google Patents

Abstract

Usage: for the interaction of gas with a liquid and may find application in various industries. The inventive includes a base and a pallet with holes located on one axis, the edges of the holes in the base are made expanding in the direction of flow, the pallet is additionally equipped with a piston with a hole, a bellows, a spring and a fitting, and a bellows and a spring connect the pallet to a piston, the edges of the holes of which are made expanding in the direction of flow, and the space between the walls of the pallet and the bellows forms a control chamber equipped with a fitting, 1 il.

Description

The invention relates to heat and mass transfer contact devices for the interaction of gas with a liquid and may find application in various industries.

A contact device for heat and mass transfer apparatus is known, comprising a web and a truncated cone chamber with openings located on one axis.

A disadvantage of the known device is the low intensity of heat and mass transfer due to the low intensity of the frequency of acoustic vibrations arising from the passage of gas through this device.

Closest to the proposed one is a contact device for heat and mass transfer apparatus, comprising a base and a tray with holes located on one axis, the edges of the holes are made expanding in the direction of flow, the base and the tray form a resonating cavity of an annular shape with the ratios

0, 7; 1, 0,, 3

where H is the height of the mouth of the cavity;

d is the diameter of the hole in the base of the plate;

D is the diameter of the cavity;

dn - hole diameter of the pallet

However, this device has limited use and is inefficient, since the pallet is installed to operate at one specific frequency of acoustic vibrations and does not have the ability to remotely change the frequency, which significantly affects the deviation of the raw materials and the use of the device to work with different levels of liquid on the base.

The purpose of the invention is the expansion of the scope and increase effectively (L

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the device by allowing remote variation in the frequency of acoustic vibrations.

The goal is achieved in that in the contact device for heat and mass transfer apparatus, comprising a base and a tray with holes located on one axis, the edges of the holes in the base are made expanding in the direction of flow, the tray is additionally equipped with a piston with a hole, a bellows, a spring and a fitting, a bellows and a spring connect the pallet to the piston, the edges of the openings of which are made expanding in the direction of flow, and the space between the walls of the pallet and the bellows form a control chamber equipped with a fitting ohm

The drawing shows a contact device, a longitudinal section.

The contact device consists of a base 1 with a hole 2, a pallet 3 with a hole 4, a piston 5 with a hole 6, a bellows 7 and a spring 8. A resonant cavity 9 is formed between the base 1 and the piston 5 in the pallet 3. The internal cavity 10 of the bellows 7 provides gas supply through the hole 4 into the hole 6. Between the walls of the pallet 3 and the bellows 7, a control chamber 11 is provided, equipped with a fitting 12. The holes 2 and 6 are made with edges that expand in the direction of flow.

The contact device operates as follows.

Gas is supplied from the bottom up through the opening 4, the cavity 10, the opening 6 and the opening 2 for interacting with the liquid located on the base 1. In this case, intense gas vibrations are generated, the acoustic frequency of which facilitates the interaction of the two gas-liquid phases. For efficient use of the device, for example, the amount of gas absorbed during heat and mass transfer is measured. At the same time through the fitting 12 serves input

a signal in the form of compressed gas, which causes a change in pressure in the control chamber 11, which leads to the displacement of the piston 5. The translational movement of the piston 5, balanced by the elastic force of the bellows 7 and the spring 8, leads to a change in the parameters of the resonating cavity 9, i.e. e. ratio change:

10

0.3, 7,

achieving such a ratio that there is maximum absorption of the gas during its interaction with the liquid.

Feasibility

In comparison with the known contact device, the invention consists in increasing the productivity of the device by selecting the optimal parameters of acoustic vibrations. In addition, by changing the parameters of the resonating cavity, it is possible to compensate for the change in the frequency of acoustic vibrations arising under the influence of any disturbing factor.

Claims (1)

The claims The contact device for heat and mass transfer apparatus, comprising a base and a tray with holes located on the same axis, the edges of the holes in the base are made expanding in the direction of flow, characterized in that, in order to expand the scope and increase the efficiency of the device by making it possible remote changes in the frequency of acoustic vibrations, the pallet is additionally equipped with a piston with an opening, a bellows, a spring and a fitting, while a bellows and a spring connect the pallet with a piston, the edge of the opening of which made expanding in the direction of flow, and the space between the walls of the pallet and the bellows forms a control chamber in which the fitting is located. ./, 2 3