CN201306838Y - Atmospheric hot water boiler - Google Patents

Abstract

The utility model discloses an ordinary pressure hot water boiler, the grate bottom is equipped with the primary air duct with the supply-air outlet intercommunication, grate upper portion is equipped with the secondary air duct, be equipped with two relative V type water jackets in the furnace, V type water jacket lower part is equipped with the primary heating pipe with primary air guider intercommunication, the secondary hot-blast main sets up on V type water jacket upper portion, secondary hot-blast main upper portion still is equipped with the arc water jacket, arc water jacket upper portion is equipped with the well arch tube bank of arranging with the alternately of furnace lateral wall water jacket intercommunication, well arch tube bank upper portion still is equipped with the top arch tube bank of arranging with the slope of top arch water jacket intercommunication alternately, top arch tube bank upper portion is equipped with. By adopting the normal-pressure hot water boiler, because the secondary hot air inlet and blending device is adopted, the combustible components in the coal are fully combined with oxygen by introducing the secondary hot air with a certain temperature, the temperature of a hearth is improved, and the combustible gas and the air are fully combined and retained by the middle arch and the top arch.

Description

Atmospheric hot water boiler

technical field

The utility model belongs to the field of boiler manufacture, in particular to an atmospheric pressure hot water boiler.

Background technique

At present, most of the boilers produced and sold on the market use double-layer and double-layer grates, which can make the fire source in the furnace realize normalizing and reverse burning. This kind of boiler is mainly composed of a U-shaped water jacket and the interspersed upper and lower layers of hot water pipes. Through the ventilation of the chimney, it burns, and the fire directly contacts the U-shaped water jacket. Heat absorption, but this kind of boiler has high requirements for fuel, and it needs to generate a lot of heat from mixed coal and lump coal to achieve it. The amount of smoke exhausted by mixed coal and lump coal is large, causing a lot of pollution.

Contents of the invention

The purpose of the utility model is to provide an atmospheric pressure hot water boiler with high thermal efficiency utilization rate, sufficient coal combustion, and reduced smoke emission.

In order to achieve the above purpose, the solution of the utility model is: an atmospheric pressure hot water boiler, which is composed of a furnace, a fire grate, a water jacket, and a flue. The bottom of the furnace is provided with two layers of connected air ducts. There is a primary air duct connected to the air supply port, and a secondary air duct is provided on the upper part of the grate, and the secondary air duct communicates with the secondary air inlet pipe through the secondary air guide box, and the secondary air inlet pipe passes through the secondary air inlet The wind guiding device is connected with the secondary hot air pipe. Two opposite V-shaped water jackets are arranged in the furnace. There is a primary heating pipe connected with the primary air guide device, the secondary hot air pipe is arranged on the upper part of the V-shaped water jacket, and the upper part of the secondary hot air pipe is also provided with an arc-shaped water jacket, and the upper part of the arc-shaped water jacket is provided with There are cross-arranged middle arch tube bundles connected with the water jacket of the side wall of the furnace. The upper part of the middle arch tube bundle is also provided with an oblique cross-arranged top arch tube bundle connected with the top arch water jacket. There is a steam dust collector.

Using the above-mentioned atmospheric pressure hot water boiler, because it adopts the secondary hot air inlet and deployment device, the introduction of the secondary hot air with a certain temperature can fully combine the combustible components in the coal with oxygen, and increase the temperature of the furnace. The top arch also fully combines and retains combustible gas and air. Practice has proved that the combustion state of coal is very sufficient, which saves coal and improves the thermal efficiency of the boiler. The oxygen blown by the blower is controlled by the primary air channel device and the secondary air intake channel device, and the combustion is supported in the lower layer of the grate, and the coal is blown up and fully combined with oxygen for combustion. There is a V-shaped water jacket under the upper layer of the fire. The primary heating pipe also acts as a hot air pipe device. The hot air in this pipe is evenly distributed on the upper part of the fire layer, and the unburned coal blown by the excessive wind force in the lower layer is controlled to be blown out of the furnace body, so that the coal can be kept in the furnace. Burn completely. Under the control of the secondary air guide box, hot air is sent into the furnace, so that the fire is evenly cut and concentrated on the upper furnace supply. The secondary hot air pipe forms a primary dedusting chamber in combination with the arc-shaped water jacket and the V-shaped water jacket. The internal fire rotates downwards and burns back, and the temperature rushes upwards from the gap between the two wings of the V-shaped water jacket and the arc-shaped water jacket due to the action of the secondary hot air pipe, and reaches the upper layer of the hot water tube bundle. Due to the primary and secondary air duct devices at the lower part of the furnace body, the secondary air guide and the role of the two hot air pipes, the combustion value of coal and its smoke and dust are fully utilized, and the temperature in the furnace rises rapidly. Do a final steam dusting.

The utility model can combust fine coal, and greatly reduce the operating cost in terms of fuel. This technology improves the thermal efficiency of coal-fired boilers by 35%, reduces the smoke and dust discharged into the atmosphere, and saves the dust removal equipment around the boiler.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Figure 2 is a left side view of the figure.

Description of drawings

As shown in Figures 1 to 2, the bottom of the fire grate 14 of the atmospheric hot water boiler is provided with a primary air duct 10 communicating with the air outlet 9, and the upper part of the fire grate 14 is provided with a secondary air duct. The secondary air guide box 1 communicates with the secondary air inlet pipe 2, and the secondary air inlet pipe 2 communicates with the secondary hot air pipe 5 through the secondary air inlet guide device 3. Two opposite V Type water jacket 7, the peak part of the V-shaped water jacket 7 extends toward the axial centerline of the furnace, the lower part of the V-shaped water jacket 7 is provided with a primary heating pipe 4 communicating with the primary air guide device 10, the secondary The hot air pipe 5 is arranged on the upper part of the V-shaped water jacket 7, and the upper part of the secondary hot air pipe 5 is also provided with an arc-shaped water jacket 8, and the upper part of the arc-shaped water jacket 8 is provided with a cross arrangement connected with the furnace side wall water jacket. The middle arch tube bundle 11, the upper part of the middle arch tube bundle 11 is also provided with the top arch tube bundle 13 connected with the top arch water jacket, which is arranged obliquely and crosswise, and the upper part of the top arch tube bundle 13 is provided with a steam dust collector 6. The top of the furnace body is also provided with an atmospheric long pipe 12 .

Claims (1)

1. A hot water boiler under normal pressure is made up of a furnace, a fire grate, a water jacket and a flue. The bottom of the furnace is provided with a two-layer connected air duct, and the bottom of the fire grate (14) is provided with an air outlet (9) The connected primary air duct (10), the upper part of the grate (14) is provided with a secondary air duct, and the secondary air duct communicates with the secondary air inlet pipe (2) through the secondary air guide box (1). The air inlet pipe (2) communicates with the secondary hot air pipe (5) through the secondary air inlet guide device (3), and two opposite V-shaped water jackets (7) are arranged in the furnace, and the V-shaped water jackets The tip part of the sleeve (7) extends toward the axial centerline of the furnace, and the lower part of the V-shaped water jacket (7) is provided with a primary heating pipe (4) communicated with the primary air guiding device (10), and the secondary hot air The pipe (5) is arranged on the upper part of the V-shaped water jacket (7), and the upper part of the secondary hot air pipe (5) is also provided with an arc-shaped water jacket (8), and the upper part of the arc-shaped water jacket (8) is provided with a A cross-arranged middle arch tube bundle (11) connected to the wall water jacket, the upper part of the middle arch tube bundle (11) is also provided with an oblique cross-arranged top arch tube bundle (13) connected with the top arch water jacket, in the The top arch tube bundle (13) is provided with a steam dust collector (6).

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