RU2335598C1 - Facility for steam heating of concrete slope mounts in wintertime - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: facility for steam heating of concrete slope mounts in wintertime consists of a steam boiler, a heating system comprised of pipes and installed in the concrete on the dam slope and thermal insulation covering the surface of the concrete and the heating system. The steam boiler is installed below the heating system and the pipes are interconnected in cycles with an adverse slope for a water flow into the steam boiler. In this case, the end of the heating system mentioned above is equipped with a pressure sensor for a stream escape in case of excessive pressure. The pressure sensor is attached with a coupling to the end of the heating system and has a valve supported with a spring that has a deflection rate regulator.

EFFECT: improvement of the concrete quality owing to a uniform heating of the concrete all over the area and reduction in operational power consumption.

4 dwg

Description

The invention relates to hydraulic engineering and can be used in the production of concrete work in the winter or at low ambient temperatures, as well as to reduce the setting time of concrete.

Known monolithic concrete fasteners [1], laid in the lining under a polymer film. The disadvantage of this technical solution is:

- the absence in this method of an additional heat source;

- when using this method does not create a favorable temperature and humidity conditions.

The closest technical solution is a device for heating concrete slope mounts in winter [2], consisting of a system of perforated tubes under a plastic film and carrying out heating by supplying steam. The disadvantage of this technical solution is that:

- the proposed technical solution does not provide for the possibility of regulating the uniformity of heating throughout the concrete area laid on the slope of the dam;

- waterlogging occurs as a result of steam condensation;

- the boiling point of the liquid is 100 ° C, rather high, which will affect the efficiency and efficiency.

The purpose of the invention is to improve the quality of concrete and reduce energy consumption during work.

This goal is achieved by the fact that after dumping the dam and planning the slope, gravel preparation is arranged (Fig. 1). To do this, a layer of gravel 20-30 cm thick is sprinkled on the slope of the dam. Concrete mixture is evenly laid on the gravel preparation, which is carefully planned and rammed. Tubes are laid on the concrete mixture or in the concrete mixture along the direction of laying the slope with a snake with a slight reverse slope to drain back into the steam boiler of condensed steam. As tubes, you can use plastic pipes. The diameter of the tubes from the boiler to the end is reduced to ensure more efficient operation. Steam will circulate through the tubes to warm the slope. Top concrete and a system of tubes are covered with a heat insulator (figure 2). The heating system is a one-piece design and is formed by the bending of tubes having a continuous and cyclic shape. The tubes are connected to the steam boiler through the discharge line using a coupler. A steam boiler is installed below the heating system to ensure water flow. The system is completely tight. At the end of the tube, a pressure sensor is installed to automatically maintain the pressure in the steam boiler system - a heating system consisting of tubes. The hole at the outlet of the tubes is blocked by a valve spring-loaded, the rigidity of which is regulated by the regulator. Air is pumped out of the boiler and pipes so that a vacuum is formed. As a result, the boiling point of the liquid decreases and the vapor moves faster and more distantly along the tube system.

Figure 1 shows the cross section of the dam with a device for heating concrete slope mounts in winter with steam; figure 2 is the same, a top view: figure 3 is a pressure sensor in the closed position; figure 4 - pressure sensor in the open position.

After dumping of dam 1, slope 2 is planned. Slope 2 is evenly laid with concrete mixture 3 and heating system 4. After laying concrete mix 3 and heating system 4, they are covered with heat insulator 5. At the end of heating system 4, a pressure sensor is provided 6. Steam heating is carried out according to the heating system 4, and the steam output at overpressure is through the pressure sensor 6. The heating system 4 is connected to the steam boiler 7 via the discharge line 8. The pressure sensor 6 is connected by a sleeve 9 to the end of the system roar 4 and has a valve 10, underlaid by a spring 11, the rigidity of which is adjustable pressing knob 12.

A device for heating concrete slopes in the winter with steam works as follows. After filling the dam 1 and the layout of the slope 2, gravel preparation is arranged (Fig. 1). To do this, a gravel layer 20-30 cm thick is sprinkled on the slope 2 of dam 1. Concrete mixture 3 is evenly laid on the gravel preparation, which is carefully planned and leveled. Tubes 4 are laid on the concrete mixture 3 along the direction of the slope with a slight reverse slope to drain condensed steam 7 back into the steam boiler. The distances between the parallel tubes 4 depend on the ambient temperature. So, in severe frosts, the distances between the tubes 4 are small to ensure sufficient heating. The tubes 4 will circulate steam to warm the slope. Top concrete 3 and a system of tubes 4 are covered with a heat insulator 5 (figure 2). The heating system is a one-piece design and is formed by the bending of tubes 4 having a continuous and cyclic shape. The diameter of the tubes 4 decreases with distance from the boiler. The tubes 4 are connected to the steam boiler 7 through the discharge line 8 using a coupling 9. At the end of the tube 4, a pressure sensor 6 is installed to automatically maintain the pressure in the system of the steam boiler 7 — a heating system consisting of tubes 4. The opening at the outlet of the tubes 4 is closed by a valve 10, a spring-loaded spring 11, the rigidity of which is regulated by the regulator 12. From the boiler 7 and the tubes 4, air is pumped out so that a vacuum is formed. As a result, the boiling point of the liquid decreases and the steam moves faster and more distantly along the tube system.

The liquid may be plain water.

The proposed technical solution is more efficient and affordable analogues. It allows due to the pumping of air from the system to ensure uniform heating of concrete of a significantly larger area, saving energy.

Used sources

1. Obrevsky V. Care for monolithic concrete // Hydrotechnics and Land Reclamation 1975, No. 9. - P.17. (Analog).

2. Patent of the Russian Federation No. 2277613, MKI E02B 1/00 B 3/12. A device for heating concrete slope mounts in winter / Z. G. Lamerdonov; declared 11/29/20004; publ. 06/10/2006, BI No. 16. (Prototype).

Claims (1)

A device for heating concrete slope mounts in winter with steam, including a steam boiler, a heating system laid on concrete on the slope of the dam and made of pipes, and thermal insulation covering concrete and a heating system on top, characterized in that the steam boiler is installed below the heating system, and the tubes are continuously and cyclically interconnected with a reverse slope for the flow of water into the steam boiler, and the heating system at the end is equipped with a pressure sensor for steam output at overpressure, while the sensor The pressure is connected by a sleeve to the end of the heating system and has a valve supported by a spring with a spring pressure stiffness regulator.

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