RU43951U1 - WATER BOILER - Google Patents

Abstract

The claimed technical solution relates to a power system and can be used in boilers operating in heating and hot water systems.

The claimed technical solution is a water boiler containing a rectangular combustion chamber 1 with a grate 2 installed in it, having a combustion zone and a convective heating zone 11, connected by direct and return pipelines to the heating system.

The combustion zone and the convective heating zone are separated by the technological partition of the combustion chamber 6, with the radiation section heating the heating medium 7 located in front of the partition. There is a gap above the technological partition of the combustion chamber for the passage of flue gases.

In the convective heating zone, two or more, but always an even number, convective sections 12 are installed, consisting of vertical pipes connected along the edges by horizontal collectors.

The combustion chamber has two or more side 5 and ceiling sections 4.

Inside one or more convective sections 12 in the convective heating zone 11 there are technological partitions made of refractory bricks 8, creating a gap with the boiler body. The gap is either at the top or bottom of the partition.

Convective sections 12 of the convective heating zone 11 are made of screen 13 and collector pipes 14, the connection between the sections is made by closing pipes 15 located on the outside of the boiler. This design provides: elimination of the counterflow of the coolant in the sections, elimination of the formation of condensate on the heating surface, uniform heating of all sections.

The technological partition of the combustion chamber 6 made of refractory bricks is a “combustion provocateur”.

Description

The claimed technical solution relates to a power system and can be used in boilers operating in heating and hot water systems.

Known hot water boiler described in the patent of the Russian Federation 2177117 in class 7 F 24 N 1/00.

This boiler has a furnace and convection parts formed by screens made of pipes, horizontal inlet and outlet headers, each of the screen pipes having inlet and outlet bypass pipes, the ends of the screen pipes of the furnace and convective screens are plugged, and the furnace and convection parts have a common ceiling screen.

The disadvantage of this design is that to achieve a high heat transfer coefficient, an increase in the mass flow rate of the liquid through the installation is required, while in order to maintain the required temperature difference at the inlet and outlet of the boiler, it is necessary to increase the length of the screen tubes and the dimensions of the boiler. This, in turn, makes it necessary to increase the heat exchange surface and the dimensions of the boiler in order to obtain the required temperature difference of the liquid at the inlet and outlet of the boiler.

Closest to the proposed invention is a hot water boiler, described as a utility model - certificate of the Russian Federation No. 25784 of 03/18/2002.

The hot water boiler contains a rectangular combustion chamber having a combustion zone and a convective heating zone, the combustion zone of which is formed by front, rear, side and ceiling screens connected by direct and return pipelines of the heating network. The combustion zone of the combustion chamber is equipped with a lower tubular screen on which a grate is installed. The combustion zone and the convective heating zone are separated by a vertical transverse partition having a channel for the passage of flue gases and installed behind the rear tubular screen of the combustion zone, two sections of straight horizontal pipes are installed in the convection heating zone, connected along the edges by vertical collectors, and are separated by an additional partition, moreover the return pipe of the heating system is connected to the lower tubular

the screen of the combustion zone, connected in series with the sections of the convection heating zone associated with the ceiling tubular screen. This screen is connected to the output of the front tubular screen, the remaining tubular screens are connected in series, and the output of the last side tubular screen of the combustion zone is connected to a direct heating pipe.

The claimed technical solution is a hot water boiler containing a rectangular combustion chamber with a grate installed in it, having a combustion zone and a convective heating zone, connected by direct and return pipelines to the heating system.

The combustion zone and the convective heating zone are separated by the technological partition of the combustion chamber, with the radiative heating section of the heating medium present in front of the partition. There is a gap above the technological partition of the combustion chamber for the passage of flue gases.

In the convection heating zone, two or more, but always an even number, convective sections are installed, consisting of vertical pipes connected along the edges by horizontal collectors.

The combustion chamber has 4 or more side and ceiling sections.

Inside one or more convection sections in the convective heating zone there are technological partitions made of refractory bricks, creating a gap with the boiler body. The gap is either at the top or bottom of the partition.

The return pipe is connected in parallel to two convection sections.

The convective sections, as well as the heating medium heating sections, are connected by closing pipes located behind the outer wall of the boiler.

The design of the boiler is presented in figure 1-figure 4,

where figure 1 shows the boiler is a side view;

figure 2 - section of the boiler - side view;

figure 3 - boiler - front view;

figure 4 - section of the boiler - front view;

figure 5 - boiler - top view;

figure 6 - section of the boiler - top view.

1 - combustion chamber;

2 - grate;

3 - ash pan,

4 - ceiling sections,

5 - side sections,

6 - technological partition of the combustion chamber;

7 - radiation section at the technological partition of the combustion chamber;

8 - technological partitions of the convection zone;

9 - furnace doors;

10 - ash door;

11 - convection heating zone;

12 - convection section;

13 - screen tubes of the convective section of the convective heating zone;

14 - collector pipes of the convection section of the convective heating zone;

15 - pipes closing convective sections;

16 - pipe connecting the convective and radiation sections;

17 - door additional supply of oxygen from the air to the furnace.

18 - outputs in the rear wall of the convection zone of the boiler;

19 - access to the heating system;

20 - doors for cleaning the boiler from soot;

21 - explosive valve;

22 - entrance to the heating system.

Technical result:

Convective sections 12 of the convective heating zone 11 are made of screen 13 and collector pipes 14, the connection between the sections is made by closing pipes 15 located on the outside of the boiler. This design provides:

- the exception of the flow of the coolant in the sections;

- the exception of the formation of condensate on the heating surface;

- uniform heating of all sections;

The dimensions of the gaps for the passage of gases are calculated individually for each boiler without a blower fan and smoke exhaust.

The technological partition of the combustion chamber 6 made of refractory bricks is a “combustion provocateur”.

Convective sections 12, consisting of screen 13, and collector 14 pipes of the convective heating zone 11 are separated by one, or several, technological partitions 8 of refractory bricks, having a gap either above or below. These technological partitions are also heat accumulators, which ensures a uniform temperature inside the boiler sections.

Job

The inventive boiler can operate on various types of solid fuel, loaded into the combustion chamber through the combustion door 9. When ash is burned through the grate 2, it enters the ash pan 3.

Hot flue gases wash the side 5, ceiling 4 radiation section at the technological partition of the combustion chamber 7, heating them and the technological partition of the combustion chamber 6, rise above the technological partition of the combustion chamber 6, wash the collector 13 and screen 14 pipes of sections 12 of the convection heating zone 11, pass above or below convective technological partitions

zone 8. Next, the gases go through two exits in the rear wall of the convective zone of the boiler 18 to the prefabricated boiler room. The cross sections of the exits in the rear wall of the convection zone of the boiler are determined by calculation.

The heat carrier by circulation pumps is supplied, according to the scheme, to section 12 of the convective heating zone 11 and passes through pipes 13, 14, 15. Its heating occurs by washing with hot flue gases all sections 12 located in the convective heating zone 11, as well as the heat given off technological partitions of the convection zone 8.

After passing through the convective heating zone 11, the coolant passes through a pipe 16 connecting this zone and the radiation section at the technological partition of the combustion chamber 7, then passes through the side 5 and ceiling 4 sections of the combustion chamber 1. From the ceiling section 4, the coolant enters the heating system to the consumer 19.

The surface of the annular spaces of the boiler sections is cleaned of soot through special doors on the facade of the boiler 20.

The load control of the boiler is carried out by the amount of fuel supplied and the amount of air supplied to the furnace through the doors 9, 10, 17.

An example of a boiler.

A hot water boiler measuring 5.3 × 3 × 2.5 m3 having in the furnace part two side sections and one ceiling made of pipes.

The radiation section at the technological partition of the combustion chamber consists of pipes.

The convective heating zone consists of 10 convective sections.

This boiler, with a fuel consumption of 180 kg / h, has an output of 0.8 MW.

For safety purposes, two explosive valves (500 × 500) sq. mm, made of sheet steel, coated with asbestos cloth, and two safety valves d = 50 mm.

The technological partition of the combustion chamber b is made of refractory brick, which is a “combustion provocateur” and a heat accumulator. Its design and location height makes it possible for more intense and uniform heating of the sections of the radiation part.

Technological partitions of the convective zone 8 are performed according to the drawings, according to the calculations. Their design and size makes it possible for maximum heating of the sections of the convective part with flue gases.

The sections of the radiation part are made of pipes - collectors of one diameter, and screen, of another, smaller, diameter. They are connected in such a way that they provide maximum heating and optimal movement of the coolant, excluding counterflow.

The combustion flame in the furnace is directed towards the movement of the coolant.

Claims (1)

A water boiler containing a rectangular combustion chamber having a combustion zone with a grate, and a convective heating zone connected by direct and return pipelines to the heating network, characterized in that there is an additional technological partition of the combustion chamber separating the combustion zone and convective heating zone, above the partition there is clearance for the passage of flue gases from the furnace to the convective part of the boiler, the furnace chamber has two or more side and ceiling sections, in the convection heating zone of the unit four and / or more even number of convective sections are piled, consisting of vertical pipes connected along the edges by horizontal collectors, in the convection zone there is one or several convective sections separated by a technological partition made of refractory bricks, above this partition, or under it there is a gap for gas passage, the return pipe is connected in parallel to two or more even numbers of convective sections, convective sections, as well as heat carrier heating sections, are connected by closing pipes, distributed laid behind the outside wall of the boiler.