RU2609500C1 - Steaming pit - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: steaming pit comprises, installed on a foundation, reference posts around a chamber, on which are suspended reinforced concrete beams with a hydroseal frame, on which are mounted slabs of a bearing reinforced concrete layer of wall enclosures, the lower part of which is arranged in a trench of the foundation which is filled with sand. The reinforced concrete beams are joined to each other and with slabs of the bearing reinforced concrete layer of wall enclosures by welding metal embedded parts The outer side of the slab of the bearing reinforced concrete layer is faced with a heat insulating material. Both sides are coated with a coating made of composite materials. The inner side is coated with a light-reflecting paint coat. The heat insulating coating and the coating of composite materials are glued to epoxy resin with an additive of light-reflecting elements.

EFFECT: high wear-resistance of component parts of a steaming pit, as well as reduced consumption of heat energy during loading/unloading of reinforced concrete articles and heat treatment thereof.

3 dwg

Description

The invention relates to construction and can be used for heat treatment of concrete and reinforced concrete products, as well as for the reconstruction of pit steaming chambers in operation [IPC V28V 11/00].

The known design of the pit steaming chamber, the wall of which is made in separate sections of sheet and shaped metal, a heat-insulating layer with the formation of an air gap, the cavity of which is connected through the control and ventilation pipe to the atmosphere, and the chamber is assembled from sections connected by welding [1].

The main drawback of the design of the well-known pit steaming chamber is that it is made of sheet and profile metal, which is susceptible to corrosion and under extreme operating conditions - high temperature and humidity quickly wear out.

Closest to the technical nature of the proposed utility model is a PIT CLEANING CAMERA [USSR author's certificate No.2005072], which contains support posts installed on the foundation around the perimeter of the chamber, suspended reinforced concrete beams with a water seal frame on them. On the beams are fixed slabs of the bearing reinforced concrete layer, the lower part of which is lowered into the foundation trench filled with sand. Thermal insulation blocks with waterproof metal sheets are fixed to the plates of the bearing reinforced concrete layer using a wooden frame. Reinforced concrete beams are interconnected and with plates of the bearing reinforced concrete layer of wall fencing by welding metal embedded parts. Blocks (thermal insulation) are made layered with air gaps and equipped with vapor-tight shells of fabric, impregnated with heat-resistant paint [2].

The disadvantage of the prototype is the high wear resistance used in the prototype of the waterproof sheet and wooden frame due to the extreme heat treatment conditions of reinforced concrete products (high temperature and humidity).

The technical result of the invention is to increase the wear resistance of the components of the pit steaming chamber, as well as to reduce the consumption of thermal energy when loading and unloading reinforced concrete products and their heat treatment.

The indicated technical result is achieved due to the fact that the pit steaming chamber contains supporting racks installed on the foundation around the perimeter of the chamber, on which reinforced concrete beams with a water seal frame are suspended, on which plates of the bearing reinforced concrete layer of wall fencing are fixed, while the lower part of which is located in the trench a foundation filled with sand, with reinforced concrete beams connected to each other and to the plates of the bearing reinforced concrete layer of wall fencing by welding metal mortgages hoist, characterized in that the outer side of the slabs of the bearing reinforced concrete layer is lined with heat insulating material, a coating of composite materials is applied on both sides, a reflective paint coating is applied on the inside, while the heat-insulating coating and the coating of composite materials are glued to epoxy resins with an additive of reflective elements .

The novelty of the invention lies in the fact that in the proposed pit steaming chamber, the outer sides of the plates of the bearing reinforced concrete layer are lined with a heat-insulating coating, on both sides of which are coated with composite materials, and a reflective paint coating is applied on the inside. The thermal insulation coating and the composite coating are glued to formaldehyde resins with the addition of reflective elements. The composite coating is made of hollow fiberglass fibers, which provides high wear resistance of the components of the pit steaming chamber and reduces the consumption of thermal energy during heat treatment, loading and unloading of reinforced concrete products.

A brief description of the drawings.

In FIG. 1, 2 shows the design of the pit steaming chamber;

In FIG. 3 is a section through a wall enclosure of a pit steaming chamber.

The implementation of the invention

The pit steaming chamber contains: support racks 2 monolithic in the foundation 1, located around the chamber perimeter, reinforced concrete beams 3, laid on racks 2, with channel 4 and sealing rib 5, after laying the beams 3 on racks 2, the channels 4 are welded together to form a common hydraulic shutter frames. Wall fencing 6, including: reinforced concrete slabs 7, heat-insulating coating 8, internal and external coating of composite materials 9, reflective paint and varnish coating 10. At the same time, reinforced concrete slabs 7 are externally lined with heat-insulating coating 8, on both sides of which internal and external coatings are made of composite materials 9, a reflective paint coating 10 is applied on the inside, and they are connected externally to the bottom of the beams 3. The heat-insulating coating 8 and the coatings are made of composite x materials 9 are adhered to the reinforced concrete slab 4 epoxy resins. Reinforced concrete slabs 7 are connected with each other and with beams 3 by welding embedded metal parts 11, which are placed at plates and beams along the entire length of the external mating ribs, and the lower edge of reinforced concrete slabs 7 is placed in the foundation trench 1 filled with sand 12.

When the length of the side of the chamber is more than 5 m, a metallic Ω-shaped compensator 13, which is a bent sheet of metal, is installed along the entire height between the reinforced concrete slabs 7 along its center.

The inner and outer composite coatings 9 are made of hollow fiberglass, for which the binders are phenol-formaldehyde resins or epoxies. Reflective elements (aluminum powder or other foil components) are integrated into the binder components.

The heat-insulating coating 8 is made of mineral heat-insulating plates, as well as other materials with a low coefficient of thermal conductivity.

The seams between the supporting posts 2, reinforced concrete beams 3 and reinforced concrete slabs 7 are closed with foam.

Pit steaming chamber operates as follows.

Forms of reinforced concrete products are loaded into the chamber, a lid is installed (not shown in the drawings), steam is released (the steam supply system is not shown in the drawings), a heat treatment cycle is performed.

In this case, the main heat loss is heat transfer through the wall of the steaming chamber, which is sequentially (reflective paint 10, internal composite 9, reinforced concrete slab 7, thermal insulation 8 and external composite 9). Heat losses in the form of scattered infrared radiation are negligible due to the use of an internal reflective coating 10.

In the wall enclosure of the pit steaming chamber, heat is accumulated in the reinforced concrete slab 7.

After unloading the molds, with the lid of the steaming chamber open, the cooling rate of the wall enclosure is lower than that of the prototype due to the heat-insulating and reflective properties of the inner and outer composite coatings 9 made of hollow fiberglass fibers bonded with epoxy resins with the addition of reflective elements, which ensures faster chamber heating during repeated heat-moisture treatment of molds with reinforced concrete products.

The technical result - increasing the wear resistance of the components of the pit steaming chamber - is achieved through the use of internal and external composite coatings 9

EFFECT: reduced heat energy consumption during heat-moisture treatment of forms of reinforced concrete products — is achieved due to internal reflection of scattered infrared radiation by internal reflective coating 10, sufficient insulation of the chamber by internal composite coating 9, as well as heat storage and retention in reinforced concrete slab 7, thermal insulation coating 8, internal and external composite coating 9 with the addition of reflective elements in the binder components.

Used Books

1. Low-inertia steaming chambers MPK-84 with organized circulation of the medium. Information leaflet No. 88-78. Chelyabinsk: TSNTI; 1989.

Claims (1)

A pit steaming chamber containing support racks installed on the foundation around the perimeter of the chamber, on which reinforced concrete beams with a water seal frame are suspended, on which plates of the bearing reinforced concrete layer of wall fencing are fixed, the lower part of which is located in the foundation trench filled with sand, and the reinforced concrete beams are connected between themselves and with the plates of the bearing reinforced concrete layer of wall fencing by welding metal embedded parts, characterized in that the outer side of the plates of the bearing zobetonnogo layer of heat insulating material lined on both sides a coating of composite materials, on the inner side reflector applied paint, wherein the heat-insulating coating and a coating of composite material are adhered to the epoxy resin with the additive retroreflective elements.

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