SU1651034A1 - Air preheater - Google Patents

Abstract

The invention relates to a heat exchange technique and can be used in nauseous installations. Its purpose is to increase operational reliability in working conditions on dusty gases. The gold gas flow passes through a system of corona and non corona electrodes 4 and 5 and acquires a charge that coincides in sign with the charge of thermal ionization. The ionized stream enters the rows 2 and 7 of the tubes and interacts with the electric field created by the tubes of rows 2. This prevents the tubes from contacting the ash particles and prevents their wear. 3 hp ff, 1 or o S

Description

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The invention relates to a heat exchange technique and can be used in fuel combustion plants.

The purpose of the invention is to increase the operational reliability in working conditions on dusty gases.

The drawing shows the air heater.

The air heater includes a housing 1 with internally arranged main rows of 2 heat exchange tubes and 1 in front of the latter in series with respect to the inlet opening 3 of the housing 1 groups of corona-core and non-corona electrodes 4 and 5, the first of which is connected to the power supply 6 of the other power source, grounded A row of 2 tubes is electrically connected to the corona electrodes 4. The air heater also contains a row of 7 electrically insulated tubes installed alternating with the main rows 2, p This and all rows 2 and 7 are arranged transversely in the housing 1. The pipes can be made of glass and in the main rows 2 with an external conductive coating. Electrodes 4 and 5 are made in the form of angles oriented by the apex of the angle towards opening 3 and are arranged in a checkerboard pattern. Magnitude

in chess order, the angle is 90. The air heater works in a sensible way.

The zologase flux passes through a system of corona and non corona electrodes 4 and 5 and acquires a charge that coincides in sign with the charge of thermal ionization. The ionized zologase flux enters the rows 2 and 7 of the tubes and interacts with the electric field created by the tubes of rows 2, and the electric field of the latter coincides in sign with the charge of the zologous-flow.

Editor 0. Yurkovetska

Compiled by G. Yayetrov

Tehred A. Kravchuk Proofreader N. Revska

Order 1598

Circulation 360

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow „Ж-35, 4/5 Raushsk nab.

As a result, charged ash particles are repelled from pipes of rows 2 and by inertia from pipes of rows 7. This prevents ash particles from contacting pipes of all rows 2 and 7 and reduces the possibility of their aeolian wear, which increases operational reliability.

Claims (4)

1. An air preheater comprising a housing with main rows of heat exchanging tubes located inside and arranged in front of the latter in series with the entrance opening of the housing by groups of corona and non corona electrodes, the first of which is connected to an electrical power source, another is grounded, and the rows of pipes are electrically connected to one from groups of electrodes, characterized in that, in order to increase operational reliability in working conditions on dusty gases, it contains additional rows of electric an insulating insulated pipes installed alternately with the basic rows, all the rows are arranged transversely in the housing, and the main tube rows are connected to the discharge electrodes, 2. Air heater according to claim 1, characterized in that the pipes are made of glass and in the main rows are provided with an external conductive coating. 3. Air heater on PP. 1 and 2, characterized in that the electrodes are made in the form of angles oriented by the apex of the angle towards the entrance opening of the hull, and are arranged in a checkerboard pattern. 4. An air heater in accordance with claims 1-3, characterized in that. the magnitude of the said angle is 90 °. Subscription