RU32247U1 - Hot water boiler - Google Patents

Description

WATER BOILER

The utility model relates to a power system and can be used in boiler building.

Known hot water boiler containing a shielded firebox, separated from the convective part of the gas-tight screen wall with a festoon, as well as a spreader. Under the firebox there is a grate for burning solid fuel.

At a certain distance from the wall, a shielded partition wall is installed, forming a chamber in the furnace with a hopper for collecting and removing ash and unburned fuel.

The flue gases generated during the combustion of fuel enter the furnace through the hole between the ceiling of the furnace and the upper part of the partition and, having made a 180 ° turn, are sent from the bottom to the convective part.

(see A.S. USSR, No. 208921, according to class F24H 1/28, 1968) - the most

As a result of the analysis of the design of the known hot water boiler

it should be noted that during its functioning, the convective surfaces of the boiler may become clogged with deposits formed during fuel combustion; the units for returning ablation and sharp blast are not effective enough during operation. The screened partition does not provide complete combustion in the furnace (s) of coal of deteriorated quality, for example, with a high content (up to 80%) of dust fractions.

I PShP 221

IPC F24H1 / 28

The objective of this utility model is to develop

the design of the boiler providing complete combustion of fuel, including deteriorated quality, as well as the effective cleaning of convective surfaces of the boiler.

The technical result in the proposed utility model is achieved by creating a water boiler containing a shielded combustion chamber, with at least one castor, separated from the convection unit by a gas-tight partition with a window in the lower part, a shielded partition installed in the combustion chamber, and also an ash bin, which according to the useful models, equipped with an ablation return system, a sharp blast system and an air heater, made in the form of a pipe system consisting of thin-walled pipes connected tube plates, and screened a partition formed with a curved heating surface.

The utility model is also characterized in that the ablation return system is made in the form of an ejection unit located in the lower part of the ash bin and connected to the fan, and pipelines with a nozzle.

The utility model is also characterized in that the sharp blast system is made in the form of a fan and sharp blast nozzles connected to the fan through air ducts.

When conducting patent research, no solutions were found that are identical to the declared one, and therefore, the claimed utility model meets the criterion of “novelty.

We believe that the information presented in the application materials is sufficient for the practical implementation of the utility model.

The essence of the utility model is illustrated by the following description of the device and graphic materials, where:

2 In FIG. 2, a boiler, top view;

In Fig. 3 is a diagram of an ablation return system;

Figure 4 is a diagram of a sharp blast system.

The hot water boiler contains a furnace 1 and convective 2 blocks.

The furnace block 1 is made in the form of a fully shielded furnace 3 with at least one casting device 4. In the furnace 3, a shielded partition 5 is installed, made with a curved heating surface. A curved heating surface ensures that fuel enters the grate during its pneumatic charging.

In this case, windows (to hell, not showing) for the passage of flue gases can be formed in the grate ..

The boiler includes an ablation return system and a sharp blast system, as well as an ash bin 6, a gas box 7 and an air heater 8.

The air heater 8 is made in the form of a pipe system consisting of thin-walled pipes connected with pipe boards and is designed to heat the air supplied to the grill under a layer of fuel to dry it.

The air heater 8 is installed on the boiler, in the case when coals with a high moisture content are used for combustion.

The ablation return system is made in the form of an ejection unit 9 located in the lower part of the ash bin 6 and connected to the fan 10, and pipelines 11 with nozzles 12.

The ablation return system is designed to return to the furnace 3 for afterburning unburned fuel particles from the hopper under the convection unit 2.

3 The system of sharp blasting is made in the form of a fan 13

and sharp blast nozzles 14 connected to the fan through air ducts 15.

The system of sharp blasting is designed to intensify the process of burning fuel in the layer by supplying air from a high-pressure fan 13 to the corresponding zones of the furnace 3.

The hot water boiler operates as follows.

The fuel in the furnace 3 enters through the spreader 4, which can be made pneumomechanical.

Gases resulting from the combustion of fuel in the layer, heating during its forced movement the water inside the pipes that shield the combustion chamber, passes through the window in the upper part of this chamber, goes down and rotates 180 ° through the festooned part of convection unit 2 and convection package, exit the boiler from above.

In the case of burning fuels with a high moisture content, an air heater 8 is installed on the boiler. In this case, gases from the upper part of the boiler, making a 180 ° turn, enter the air heater 8, and are removed from it from below.

During the operation of the device, an acute blast system may be included.

To do this, turn on the fan 13 (on the damn. Not showing.). Air from the fan enters the duct 16 of the sharp blast located at the bottom of the boiler between the furnace 1 and convective 2 blocks. Through a pipeline with nozzles located on them, it enters the combustion chamber of the boiler above the fuel layer, intensifying its combustion process.

For the purpose of afterburning unburned particles of fuel, an ablation return system is included. To do this, turn on the fan 10 and air from it through the ejection unit 9 through pipelines 11 enters the furnace 3.

& RZ // 2M /

4

When this air is transported into the nozzle 12 particles of unburned fuel (entrainment) from the hopper under the convective part

The nozzle 12 is fixed at the end of the combustion chamber above the grate, through which unburned particles fall into the furnace 3 and their afterburning occurs.

To clean the convective surfaces of the boiler from external deposits formed during fuel combustion, a gas-pulse cleaning system is used.

Claims (3)

1. A boiler containing a shielded combustion chamber with at least one castor, separated from the convection unit by a gas-tight partition with a window in the lower part, a shielded partition installed in the combustion chamber, as well as an ash hopper, characterized in that it is equipped with an ablation return system , a sharp blast system and an air heater, made in the form of a pipe system consisting of thin-walled pipes connected with pipe boards, and the screened partition is made with a curved surface thw heating. 2. The boiler according to claim 1, characterized in that the ablation recovery system is made in the form of an ejection unit located in the lower part of the ash bin and connected to the fan, and pipelines with a nozzle. 3. A hot water boiler according to any one of claims 1 and 2, characterized in that the sharp blast system is made in the form of a fan and sharp blast nozzles connected to the fan through air ducts.