RU2420690C2 - Granulated fuel combustion plant - Google Patents

Abstract

FIELD: power industry.

SUBSTANCE: granulated fuel combustion plant refers to power industry and can be used in heating systems operating on solid granulated fuel, for example pellet. Plant includes burner consisting of body 1, head 2, air distributing header 3, flange 4 and supply screw 5 of granulated fuel from silo 6 of collector, air supply regulating device 7 attached to flange 4 of burner and having communication through channels 8 to head 2 of burner and respectively communication through channels 9 to boiler 10, unit 11 regulating the supply of cold and hot heat carrier is fixed on body 1 of burner, iris damper 12 installed between silo 6 and screw 5, and external automation panel 13.

EFFECT: compact, reliable and easy-to-manufacture granulated fuel combustion plant.

1 dwg

Description

The technical solution relates to mechanical engineering and can be used in heating systems operating on solid granular fuel, for example, pellets.

Known "Burner device for burning waste of plant origin" No. 18269 UA, which contains a fuel hopper, a rotating auger for supplying fuel to the chamber, a sectional chamber supplying air under the fuel ball and a manifold. In addition, there is a chute below the auger. The trough is connected to a sectional air supply chamber under the screw. The shaft and blades are made hollow.

The specified technical solution has nodes that complicate this device. Thus, a sectional chamber, hollow blades and a shaft are provided in the design. The production of hollow blades is very complex. To get one blade, you must first make two correctly bent walls, and then connect them. The air supply under the auger can cause air breakthrough into the cavity of the boiler, and the burning area will be destroyed, which will affect the stable operation of the entire installation.

To eliminate these shortcomings, the task was set to create a compact, reliable and easy to manufacture installation for burning granular fuel.

To solve this problem, an installation for burning granular fuel is proposed, which includes, like the well-known one, a burner consisting of a head, an air distribution manifold and a fuel feed screw from the storage hopper, and a boiler.

Unlike the known, the claimed installation is additionally equipped with a device that regulates the air supply, attached to the burner flange and having a channel connection with the burner head and the boiler. Also, the inventive installation is additionally equipped with a unit regulating the flow of cold and hot coolant. In addition, an iris gate is installed above the auger of the burner, while the installation is connected with an external automation shield.

Distinctive features of the claimed installation for burning granular fuel are new, sufficient and necessary to accomplish the task, and have a number of positive qualities that affect the technical result, namely:

- the inventive installation is additionally equipped with a device that regulates the flow of air. This installation can work as a regulator. That is, it can increase or decrease the air supply. The installation is constructive - simple and technologically feasible;

- the regulating air supply device is attached to the burner flange;

direct mounting of the air supply control device to the flange ensures the compactness of the claimed device;

- the regulating air supply device has channels connecting it to the burner head and the boiler;

the presence of communication ensures the supply by different channels of different volumes of air into the combustion zone and into the cavity of the boiler;

- the claimed installation is also additionally equipped with a unit that regulates the flow of cold and hot coolant;

this allows you to automatically bring the heating system into working condition and maintaining it;

- the iris gate was used in the installation;

the use of such a gate ensures stable operation of the installation. Compared to other gates, the iris gate has small dimensions, low cost, and is easy to manufacture;

- the iris gate is installed above the screw;

this arrangement provides only the opening and closing of the fuel supply. Fuel under its mass enters the auger through the iris gate;

- the installation is completed with an external automation shield;

the presence of an automation shield allows you to fully automate the process of burning granular fuel.

The presence of an air supply device, a unit that regulates the supply of cold and hot coolant, an iris gate and an automation panel ensures that the automatic operation of the installation for burning granular fuel is performed.

All the distinguishing features are in a causal relationship with the result and allow us to solve the task at the proper technical level. Thus, the features of the claimed technical solution are significant.

The essence of the technical solution of the installation for burning granular fuel is illustrated in the drawing.

The drawing schematically shows a device for burning granular fuel.

A pellet fuel combustion plant includes:

- a burner consisting of a housing 1, a head 2, an air distribution manifold 3, a flange 4, and a granular fuel feed screw 5 from a storage hopper 6;

- a device 7, regulating the air supply, attached to the flange 4 of the burner and having a connection between the channels 8 and the head 2 of the burner and, accordingly, the connection of the channels 9 to the boiler 10;

- block 11, regulating the flow of cold and hot coolant, is mounted on the housing 1 of the burner;

- a gate 12 iris mounted between the hopper 6 and the screw 5;

- remote shield 13 automation.

Installation for burning granular fuel is as follows.

Through an open gate 12, the iris from the hopper 6 to the screw 5, under its own weight, granulated fuel enters, picked up by the screw 5, is sent to the burner head 2. Simultaneously with the device 6, regulating the air supply, air enters the burner head 2 through channels 8. Next, air passes into the manifold 3 and through its openings enters the combustion zone of granular fuel. At the same time, the device 6, regulating the air supply, channels 9 feed air into the boiler 10 for burning unburned volatile fractions of fuel. In the process of burning granular fuel, the collector 3 has intermittent circular motion, blows and destroys the stagnant zones of the combustion zone.

Block 11, having a drive device (not shown) connected to the remote control panel 13 of the automation, regulates the supply of cold coolant along a small circuit: boiler, block, pump, boiler, and hot along a large circuit: boiler, block, consumer, block, pump and boiler.

The process of ignition and combustion of granular fuel is regulated by the remote shield 13 in automatic mode, which ensures the reliability and safe operation of the installation.

The claimed solution gives a new direction in technology. The installation is extremely compact and has one structural base - a burner.

This technical solution is relevant and useful.

Claims (1)

A plant for burning granular fuel, comprising a burner consisting of a head, an air distribution manifold and an auger for feeding granular fuel from the hopper for combustion, and a boiler, characterized in that it is additionally equipped with a device for regulating the air supply attached to the burner flange and having communication channels with a burner head and a boiler, it is also equipped with a unit that regulates the supply of cold and hot coolants, in addition, an iris gate is installed above the auger of the burner, while the installation is connected with Osnoy shield automation.