SU1216615A1 - Enamelled heat exchanger - Google Patents

Description

one

The invention relates to heat exchange apparatus and can be used in the energy industry.

The purpose of the invention is to intensify heat transfer.

The drawing schematically shows the proposed heat exchanger.

The heat exchanger contains a jacket 1 provided with a housing 2, in the lid 3 of which at least one vessel 4 is fixed with the inlets 5 and 6 of the working medium. The lateral surface 7 of the vessel 4 is made corrugated with a radius R around the top of the corrugation and the step t of the wave, determined from the appearance:

R cos 2n

I ZcosoL-Binoo

where 2OC is the angle at the top of the corrugation.

The vessel 4 is made in the form of bellows i. a corrugated pipe with a closed surface, for example, in the form of an elliptical bottom, and the upper part with a central branch pipe with a flange and threaded bolt holes for fixing it in the cover 3.

The inner surface of the housing 2, the cover 3 and the outer surface of the vessels 4 are covered with acid-alkali resistant glass enamel.

;

Due to the fact that the forming walls of the corrugated tube represent a wavy line, depending on the magnitude of the difference between the ridge and the ridge of the corrugation wave, the surface area of the vessel 4 can be increased several times.

Editor E.Papp Order 992/50

Compiled by V. Kosenko

Tehred L. Mike., Proofreader E. Sirohman

Circulation 590 Subscription VNIIPI USSR State Committee

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

Branch P1Sh Patent, Uzhgorod, ul "Project, 4

216615

However, in products covered with glass enamel, the configuration of the corrugation wave is determined by the conditions of 1 enameling, i.e. Ensuring the possibility of applying a high-quality glass-enamel coating and correcting the latter in case of defects on it.

In practice, a glass-enamel coating without any defect is rarely obtained. The characteristic defects of the glass-enamel coating that occur during the enameling process are so-called pinpins, i.e. places not covered with glass enamel in the form of separate points with a diameter of 0.1–2 mm, which can be at various places of the coating. The elimination of these defects is carried out by drilling the defective area with a dental boron to a depth of no more than 5 mm perpendicular to the surface of the coating with an extension at the bottom of the hole with a sponge gold seal installed in the specified hole, or by installing a corrosion resistant medium on the defective place .

Therefore, for a product with a glass-and-magnum coating having a wave-like configuration, in order to perform the drilling operation under the seal or threading the screw it should be possible to bring the tool perpendicular to the tangent to any point on the surface.

This condition is met if the radius R of the rounding of the top 1y of the corrugation and the step t are determined from the expression

cos 2.06

R

t 2 coSoi

l

where 2 oi / is the angle at the top of the corrugation.

Claims (1)

ENAMELED HEAT EXCHANGER containing a jacketed body, in the cover of which is fixed at least one vessel with input / output nozzles of the working medium, characterized in that, in order to intensify heat transfer, the side surface of the vessel is corrugated with a radius R of the corrugation apex and a step of £ wave defined from the expression R css 2 οό Ί 2 sowing tc θ.π os ’where 2 ού is the angle at the top of the corrugation. GO> —A sl>