SU1719802A1 - Straight-through hot-water boiler - Google Patents

Abstract

The invention relates to the means of heat supply of residential and administrative buildings and can be used in water heating systems with natural circulation. The aim of the invention is to reduce energy consumption by increasing the circulation pressure of the boiler. The boiler contains a vertical body 1 with a lower inlet and an upper outlet branch pipe 2.3 and placed in the body of the furnace 4, vertical smoke tubes 6 and chimney 5. In the upper part it contains a separator 7 and a condenser 8, is located

Description

The invention relates to means of heat supply for residential and administrative buildings, in particular, to direct-flow water-heating boilers, designed primarily for natural-circulation water heating systems.

A well-known scheme that increases the circulation of water through the boiler through the ejecting action of a jet of pressurized water that draws water from the upper part of the hopper and feeds it to the boiler inlet. The scheme assumes the presence of a pump, as the network water must be supplied to the injector under pressure by means of a mains supply.

Thus, this scheme is not cost-free.

A natural circulation boiler is known, which includes a heat source, feed and return pipes and a heater. To increase the circulation head, the system is equipped with a circuit of light boiling liquid with installation on the separator supply line, and in the circuit of light boiling liquid - a condenser, the outlet of which is connected to the supply pipe.

However, this solution cannot be attributed to a pump-free system, since the supply of condensed light boiling liquid to the supply line requires the installation of a pump and, possibly, a compressor for its liquefaction. In addition, the system is significantly complicated due to the need to perform a cooled light boiling circuit.

Closest to the proposed is a hot water boiler, which includes a vertical case with lower inlet and upper outlet pipes and a furnace with a radiating heating surface located in the case, vertical flue pipes that connect the furnace with a chimney and forming a convective heating surface, and a chimney.

The circulation head of such a boiler is determined by the difference in the densities of water in the boiler and the heating line.

The purpose of the invention is to reduce the energy consumption for circulating water in the heating system by increasing the circulation pressure of the boiler.

The goal is achieved by the fact that a direct-flow hot-water boiler containing a vertical case filled with water, with lower inlet and upper outlet nozzles, a firebox in the housing, connected by its ends to the latter, and by others to

a stack of smoke tubes, further comprises a separator and a condenser, located one below the other in the upper part of the housing, the outlet of which is located under the separator.

Due to such a performance of a flow boiler, it is possible to heat water to a temperature at which adiabatic boiling up of water occurs in the middle part of the boiler. So

Thus, the middle part of the boiler, mainly in the chimney outlet section, works as a parlift, ensuring an increase in the circulation pressure of the boiler. In this case, the steam released from the water is separated in the separator and is condensed in the upper part of the boiler.

The drawing shows a diagram of the proposed rammer hot water boiler. The continuous boiler contains a vertical housing 1 filled with water, with the lower inlet 2 and the upper outlet 3 with branch pipes located in the housing 1 of the furnace 4 and connected to the chimney 5 with smoke tubes 6. The boiler additionally contains a separator 7 and the condenser 8, located one above the other in the upper part of the housing 1, the outlet of which 3 is located under the separator 7. The capacitor 8 is provided with an inlet

9 and outlet 10 nozzles communicated with the return line of the boiler (not shown).

Prismid hot water boiler works as follows.

The water in the boiler is heated through the walls of the furnace 4, fire tubes 6 and chimney 5. Under the pressure of the gravitational pressure of the colder water in the heating system, water flows through the inlet 2 into the internal cavity of the housing 1. Heating and moving upwards in the middle part of the boiler, the water boils up at the calculated parameters. Adiabatic boiling of water occurs both due to its heating to the required temperature, and due to a decrease in hydrostatic pressure as the heated water moves upwards to the outlet nozzle 3. Forming from the steam line to the mixture, rapidly moving upwards, forms a parlift in the middle part of the boiler, mainly in the area where the flue pipe 5 passes, significantly increasing the circulating pressure of the boiler. Condensate falling on the cooled surface of the condenser 8, as well as water,

separated in separator 7. flow down. Hot water from the boiler through the outlet 3 enters the heating system.

Thus, the proposed design of a continuous boiler provides a higher value of the circulation head and is therefore suitable for use in heating systems of high-rise buildings with natural circulation of water.

Claims (1)

Invention Formula is a boiling hot water boiler containing a vertical case filled with water, with lower inlet and upper outlet nozzles, a firebox in the case, connected to the chimney with the ends of the latter and others to a chimney, in order to reduce energy consumption by increasing the circulation head, it additionally contains a separator and a condenser, one above the other in the upper part of the housing, the discharge pipe of which is located above the separator.