SU779359A1 - Steaming chamber - Google Patents

Description

one

The invention relates to the production of building materials, namely, devices for the heat treatment of building products.

A known propane chamber for heat and heat treatment of building products, into the working volume of which natural or superheated steam is supplied, produced in stationary boiler houses l.10

Closest to the invention, according to its technical essence and the achieved result, is a steam chamber comprising walls, Klaak and diagonally spread steam supply manifolds with nozzles 21.

The disadvantage of these chambers is the improved final humidity of the products and the long heat treatment cycle. Key 20

The aim of the invention is to intensify the heat treatment and lower the final moisture from the Delis.

This goal is achieved by the fact that the steam chamber, which includes 25 walls, a cover and diagonally located steam supplying collectors with nozzles, is equipped with packages of two-phase thermosyphons, whose heat removal areas are installed vertically

nozzle axis and provided with horizontal directions.

FIG. 1 shows the outline of the camera; in fig. 2 is a cross-section of a camzra; in fig. 3 is a longitudinal section of a package of two-phase thermosyphons; in fig. 4 is a cross-section of the package.

Steam chamber 2 is equipped with supports 2 with supports for molds with workable Parts 3. Steam supply pipes are installed on both sides; ROOTED TRAILERS WITH FLOOTS 4 and 5. Outflow from nozzles 4 located on the collector comes from BOTTOM upwards, and from nozzles 5 - naobort. In addition, the chamber is equipped with packages of two-phase thermosyphon b, installed in one vertical with the nozzle axes, intended for drying the flow of Greek medium (steam). The heat removal areas of the packages are provided with guides 7 for controlling the circulation flows inside the chamber. The plots of heat supply packages of two-phase thermosyphons are located in the chamber 8 of heat supply.

Taking into account the aerodynamics of the movement of steam tfacfcasieffHOro water streams.

nozzles 4 and 5 flowing out (for example, Laval nozzles) located on the vapor-inlet collectors, and their ejecting effect on the steam chamber environment, two-phase thermosyphon heat removal sites are installed along the vertical axis of the nozzles, which ensures the preservation of the flow velocity, There is an increase in the ejection capacity of this jet. The ejection capacity of the jets significantly weakens on the surface of the lower parts. To prevent this, in the heat removal areas: packages of two-phase thermosyphons, guides are installed that allow an increase in the velocity of the medium in the gaps between the lower products. The installation of such guides, on the one hand, contributes to the complete elimination of stagnant zones-steaming chambers, significantly increasing the speed of the heating medium in the gaps between the products, on the other hand, they significantly develop the heating surface, which contributes to reducing the temperature difference over any section of the chamber.

The device works as follows. Saturated water vapor from the boiler house supplies steam to the manifolds of the upper and lower wiring. At the moment of the beginning of the steam outflow, two-phase thermosyphon b packages are placed, arranged, as indicated in Figs. 1 and 2, with guides mounted on them.

Described, the device allows you to create a single circulation circuit of a moving heating medium, contributing to the complete elimination of the stagnant zones in the chamber, as well as to increase the rate of

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Reasonable indicators of products subjected to heat and heat treatment by increasing the degree of dryness of wet saturated steam, especially during the period of isothermal aging when processing products from light concrete.

As a result of using the described device, the specific steam consumption is reduced by 25–30%, the heat and moisture treatment cycle is reduced by 1.5–2.0 hours (depending on the concrete type and thickness of the products), and the quality indicators of the processed products from lightweight are increased. concretes.

Claims (2)

Invention Formula A steam chamber comprising walls, a lid and diagonally located steam supplying collectors with nozzles / characterized in that, in order to intensify heat treatment and lower the final humidity of the products, it is equipped with two-phase thermosyphon packages whose heat removal areas are installed along the vertical axis of the nozzles and are horizontal guides. Sources of information taken into account in the examination 1, Voznesensky LL Heat installations in the G1 production of building materials and products M., Stroyizdat, 1964, p. 347-350. 2. Voznesensky A.L. Structural elements of steaming chambers with intensive circulation of the heating medium. - Concrete and reinforced concrete. K b, 1968, p. 10 (prototype). / FIG. 7 6