RU189443U1 - Combustion device - Google Patents

Abstract

The combustion device relates to the boiler building and can be used in the construction of low-power hot-water boilers. The furnace device contains a storage bin 1, mounted on a base 2 with horizontal guides 3, in which a supporting carriage 4 is installed with the possibility of reciprocating motion, an grate 5 installed in an accumulation bunker with a slope guide baffle platform 7, a fuel distribution device consisting of booster device in the form of a cooled bobbing bar 8 connected to 4 cooling pipes 9 mounted on a carrier carriage and a fuel supply device containing thickness The metering shovel with a central holder and a pad 10 located under the storage bin 1 on the side runners 13. The central holder of the paddle 10 is made in the form of a tubular guide type tube in a tube with an outer movable tube 11 and an inner guide tube 12 fixed with an end portion on the basis of 2. The technical result is to increase the technological design with increased reliability of work, simplify maintenance and repair, reduce the probability of ISAN fuel in the storage hopper and the danger of fire in the coal bunker efficiency burning low grade fuel with a stable combustion process using a furnace arrangement in hot water boilers.

Description

The utility model relates to power plant engineering, in particular, boiler building, and can be used in low-power water boiler designs to mechanize the boiler flue process, generate thermal energy for utility systems, as well as for heat supply systems for buildings and structures, while burning low-grade coals.

Known combustion devices with a blast bar, containing a storage bin, mounted on the base with horizontal guides, in which a carrier carriage is installed with the possibility of reciprocating movement by means of an electromechanical drive, a cooled grate with tilted grate, a fuel supply and distribution unit consisting of a driven into motion with the help of a sector feeder and a shuruyuschy device in the form of a cooled shuruyu strap connected to the cool power pipes, mounted on the carrier carriage (see the patent for utility model of the Russian Federation No. 70344 IPC F23B 30/06, publ. 01/20/2008, see http: /biek.ru/kotl_vodogreynyy_kvm-2.0_k/b_s_me, and also http://www.kvzr.ru/boiler-kvm-25-tshpm.html).

The closest in technical essence is a combustion device containing a storage bin, mounted on a base with horizontal guides, a cooled grate, a fuel supply device consisting of a sector feeder driven by a thrust thrust, and a fuel distribution device with a booster device in the form of a cooled shuruyu the strap connected to the cooling tubes mounted on the carrier carriage mounted on the base with the possibility of reciprocating views, with the part of the base, which is under the grate and forming the blowing duct, is divided by transverse partitions into zones, each of which has a separate window on one side for connecting the duct with a valve, and on the opposite side a window for removing a dip, the grate consists of free grates, which are attached with bolts to a water-cooled lattice of steel pipes, while the turning mechanism of tilting grates is equipped with an electromechanical drive, and the top Part of the base frame is formed laterally with iron seals and the guides in the form of U-sections facing shelves downwards to be placed on them boiler collectors (see. Patent for utility model of the Russian Federation No. 70344 according to IPC F23B 30/06, publ. 01.20.2008.).

Common drawbacks of known combustion devices are the low efficiency of dosing the small fraction of fuel, the complexity of operating and repairing the sector feeder, the high probability of fuel sticking, as well as the danger of fuel ignition in the storage bin due to insufficient sealing from the furnace chamber during the “idle” process.

The technical result is an increase in the technological design with increased reliability, simplified maintenance and repair, reducing the likelihood of fuel sticking in the storage bin and the risk of coal combustion in the bunker, improving the efficiency of burning low-grade fuel with a stable combustion process when using a firing device in water boilers.

The technical result is achieved by the fact that in a furnace device containing a storage bin, mounted on a base with horizontal guides, a cooled grate, a fuel supply device and a fuel distribution device with a pressure device in the form of a cooled floor plate connected to cooling pipes mounted on the carrier carriage mounted on the base with the possibility of reciprocating motion, according to the utility model, the storage bin is provided with a fixed tilting in the lower part of the guide baffle platform, the fuel supply device is made in the form of a pusher-shovel dosing unit with a central holder and a blade platform installed with the possibility of reciprocating motion on the guide platform with side rails attached to the edges of the walls of the storage bin, forming a passage window and outlet window.

The central holder of the pusher-shovel-dispenser is made in the form of a tubular guide type pipe in a pipe, the internal guide pipe of which is fixed on the base, and the external movable pipe is connected to the bearing carriage.

The guide fence platform is installed at an angle of 55-70 degrees to the normal.

The drive of the reciprocating motion can be used in various known designs, for example, hydraulic or electromechanical. In the proposed furnace device used in the known electromechanical actuator with gear motor.

FIG. 1 shows a schematic representation of the combustion device, a general view; in fig. 2 - isometric view of the combustion device; in fig. 3 shows a fragment (photo) explaining the location of the pusher-shovel; in fig. 4 is an image of the pusher-shovel dispenser.

The furnace device contains a storage bin 1, mounted on a base 2 with horizontal guides 3, in which a carrier carriage 4 is installed with the possibility of reciprocating movement by means of an electromechanical drive, a grate 5 with tilting grate 6 mounted in an accumulation bin with a tilting guide fencing platform 7 , fuel distribution device, consisting of shuruyuschey device in the form of shuruyuschey strap 8, connected with fixed on the carrier carriage 4 Ohla pipes 9 and a pusher-shovel with a central holder and a pad 10, located under the storage bin 1.

The central holder is made in the form of a tubular guide-type tube in a tube with an outer movable tube 11 and an inner guide tube 12 fixed by an end portion on the base 2.

The paddle site 10 of the pusher-shovel dispenser is installed under the storage bin 1 on the side runners 13 of the guide pad forming the bottom of the storage bin 1.

Electromechanical drive carrier carriage 4 is made with a gear motor 14.

The operation of the combustion device is illustrated with a specific example when used in a hot water boiler.

When the electromechanical drive is on, the carrier carriage 4 performs reciprocating movements along the horizontal guides 3 of the base 2.

When moving the carrier carriage 4 "forward" in the direction of the grate 5, the pull-in bar 8 of the fixture, the cooling pipes 9 of which are attached to the carrier carriage, moves along the grate 5, advancing the fuel through it. When moving "back" shuruya strap 8 delivers a portion of hot fuel for fresh fuel. The screw strip 8 performs periodic reciprocating movements along the grate.

When moving the bobbing bar 8 "forward", there is a significant movement of fuel in the horizontal direction, as well as lifting it and rolling over the connecting bar 8, and when moving "backward" the fuel shifts slightly from the amount of shift in the forward direction. On tilting grates 6, afterburning of unburned pieces of fuel occurs, after which the tilting grates 6 tilts and then return to their original position using an electromechanical drive (not shown), ensuring periodic slag removal.

The flow of fresh fuel from the storage bin 1 is metered by means of a pusher-shovel dispenser, the paddle pad 10 of which is located behind the screwed strip 8 under the storage bin 1c in the side skids 13.

While the outer movable pipe 11 of the Central holder (handle) of the pusher-shovel dispenser, moves together with the carrier carriage 4, sliding along the inner guide pipe 12, fixed end section on the base 2.

The fuel in the storage bin 1 gradually moves under its weight down to the exit window, partially lingering along the guide baffle platform 7, which directs the fuel to the guide platform with side skids 13 in front of the blade platform 10, which evenly supplies fuel to the grate 5.

Under the guide baffle platform 7, a space is formed which is not affected by the gravity of the fuel, thereby reducing the pressure on the fuel before exiting the storage bin 1 and, as a result, removes the effect on the dosing rate regardless of the workload of the storage bin 1.

Getting under its own weight on the grate 5, the fuel is captured by a rowing bar 8 and evenly moves along the grate 5, receiving a metered and even distribution of fuel on the grate 5.

The stroke of blast bar 8 provides a double mode of operation: the first move provides full unloading of burnt slag from the grate 5, the second move allows you to load a fresh batch of fuel to the middle of the grate 5, ensuring the full filling of the TMU firebox with a fresh fuel.

Combustion device with half motion provides uniform ignition of coal, and the intensification of the combustion process. The fuel supply from the storage bin 1 and removal of the ash residues by the screwed bar 8 is carried out from a single electromechanical drive with the gearmotor 14. The pusher-shovel metering unit allows the fuel to be evenly distributed over the entire width of the grate 5, ensuring a stable process of fuel combustion.

The overlap of the outlet window of the storage bin by the pusher-shovel dispenser reduces the risk of coal ignition in the storage bin.

Work of the furnace device is carried out in the automatic mode. When the firebox is in operation, the beam plate periodically, at certain intervals, makes a reciprocating movement. The combustion device provides automatic fuel supply to the grate and discharge of focal residues. Independent control of the volume of the blast air according to the combustion zones supplied under the grate is provided in the furnace device. The range of regulation of the power of the combustion device is provided by changing the time interval between cycles of the stroke of the bar and the volume of the blowing air in the combustion zone of the fuel.

The implemented principle of independent fuel supply can significantly reduce the mechanical and chemical underburning of fuel, improve the technical, economic and environmental characteristics of the boiler, on which the proposed combustion unit is installed.

Claims (3)

1. A furnace device containing a storage bin, mounted on a base with horizontal guides, a grate, a fuel supply device and a fuel distribution device with a bore device in the form of a billing plate connected to cooling pipes fixed to the base carriage mounted on the base returnable -starting movement, characterized in that the storage bin is provided with a baffle platform fixed with a slope in the lower part the dacha fuel is made in the form of a pusher-shovel-dispenser with a central holder and a paddle platform installed with the possibility of reciprocating motion on a guide platform with side skids attached to the edges of the walls of the storage bin, forming a through-passage window and an outlet window. 2. The furnace device according to claim 1, characterized in that the central holder of the pusher-shovel dispenser is made in the form of a tubular guide-type tube in a tube, the inner guide tube of which is fixed to the base, and the outer movable tube is connected to the carrier carriage. 3. The furnace device according to claim 1, characterized in that the guide baffle platform is installed at an angle of 55-70 degrees to the normal.

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