CN107869840A - It is a kind of to use solid fuel and the generating heating boiler for dual purpose of combustion gas - Google Patents

Abstract

The invention discloses a dual-purpose boiler for power generation and heating that can use solid fuel and gas, including a heating container, a furnace, a furnace body, a furnace cover, a grate, a heating coil, a gas pipeline, a gas hole, a fuel port, a damper, and a chimney. The fuel port and damper are opened on the furnace wall, the fuel port is set on the upper part of the grate, the damper is set on the lower part of the grate, the furnace cover is placed on the upper end of the furnace body, the heating container is set on the furnace cover, and the lower part of the heating container is a heating plate The heating coil extends into the furnace body, the grate is set at the lower part of the furnace body, the furnace gall is in the center of the heating coil, the spiral air pipe extends upwards along the wall of the furnace body to the upper part of the grate, and the gas pipeline is set on the grate. There are gas holes on the pipeline, a dust tank is set on the inner wall of the furnace, the chimney is set on the upper part of the dust tank, and the lower part of the dust tank is matched with the grate. The heating container includes a water storage tank, a water inlet and a water outlet, and the water outlet is set on the upper part of the water storage tank , the lower end of the heating coil is connected to the water inlet. The invention is suitable for heating and can also be used as a boiler for power generation.

Description

A dual-purpose boiler for power generation and heating that can use solid fuel and gas

technical field

The invention relates to the technical field of boiler equipment, in particular to a dual-purpose boiler for power generation and heating that can use solid fuel and gas.

Background technique

In response to the country's call to improve the living standards of the rural population, local governments are vigorously developing rural residential heating work, and rural bungalows are generally far apart, with long pipe networks and large heat loss; residential buildings are generally not energy-saving buildings and have high heat loads. It's a bit like a villa area. Some heating companies are unwilling to invest in boiler rooms for heating in villa areas. The initial investment and operating costs are higher than those of residential areas. At present, there are two schemes of independent heating for each household or centralized heating for a village. At the same time, the problem of stacking waste such as straw and wood produced in rural production also needs to be solved urgently. In order to solve the problem of central heating in villages or independent heating in each household, a small and medium-sized hot water boiler that is energy-saving and can use a variety of fuels is needed.

In addition, most of the power generation boilers in the prior art are gas-fired or coal-fired boilers. For the use of other fuels, there are also problems of low thermal efficiency and excessive emission pollution. Moreover, there is a need for a high thermal efficiency and good environmental performance that is also applicable to other fuels. Boiler with low emissions.

Contents of the invention

The present invention aims to solve the above-mentioned deficiencies in the prior art, and provides a dual-purpose boiler for power generation and heating that can use solid fuel and gas. The heating coil of the heating furnace provided by the present invention extends into the furnace body, so that the combustion heat can be fully utilized , no matter the fuel with high calorific value or low calorific value can fully heat the water in the heating container. The internal combustion space of the furnace body is large, and the spiral air duct can make the internal combustion generate a rotating form, prolong the residence time of insufficiently burned flue gas in the furnace, and provide sufficient oxygen. The furnace made of metal mesh furnace and porous refractory material The disc can also play a role in promoting the full combustion of flue gas, and various fuels including loose coal, briquette, straw, and sawdust can be used. Moreover, there are gas pipelines, and gas heating schemes can also be used. It is suitable for small-area central heating or household heating, and can also be used as a power generation boiler.

The technical scheme that the present invention solves its technical problem to take is:

A dual-purpose boiler for power generation and heating that can use solid fuel and gas, including a heating container, a furnace, a furnace body, a furnace cover, a grate, a heating coil, a gas pipeline, a gas hole, a fuel port, a damper, a chimney, and a dust tank , the fuel port and air door are opened on the wall of the furnace body, the fuel port is arranged on the upper part of the fire grate, and the air door is arranged on the lower part of the fire grate. , the lower part of the heating container is a heating coil, the heating coil extends into the furnace body, the grate is set at the lower part of the furnace body, the furnace gallbladder is in the center of the heating coil, and the spiral air pipe extends obliquely along the wall of the furnace body to the upper part of the furnace grate. The gas pipeline is arranged on the grate, the gas pipeline is provided with a gas hole, the inner wall of the furnace is provided with a dust tank which runs through up and down, the chimney is arranged on the upper part of the dust tank, and the lower part of the dust tank cooperates with the grate, and the heating container includes a water storage tank , water inlet, water outlet, the water storage tank is a disc-shaped hollow container, the water outlet is located on the upper part of the water storage tank, and the lower end of the heating coil is connected to the water inlet through a pipeline. The furnace net and the lower furnace pole, the furnace net is a refractory metal mesh, the furnace plate is a porous refractory material, the furnace is fixed on the grate through the furnace pole, and the heating coil adopts a spiral structure .

The furnace cover is provided with a water storage tank seal and a water outlet seal.

There are multiple spiral air ducts, and the multiple spiral air ducts are arranged at different heights of the furnace body or evenly distributed at the same height.

The outer port of the spiral air duct is connected with the fan.

The horizontal section of the dust tank is a rectangular or arc-shaped structure.

The beneficial effects of the present invention are:

1. The heating coil of the heating furnace provided by the present invention extends into the furnace body, so that the combustion heat can be fully utilized, and the water in the heating container can be fully heated no matter the fuel with high calorific value or low calorific value. The internal combustion space of the furnace body is large, and the spiral air duct can make the internal combustion generate a rotating form, prolong the residence time of insufficiently burned flue gas in the furnace, and provide sufficient oxygen. The furnace made of metal mesh furnace and porous refractory material The disc can also play a role in promoting the full combustion of flue gas, and various fuels including loose coal, briquette, straw, and sawdust can be used. Moreover, there is a gas pipeline, and a gas heating scheme can also be used. Changing the size parameters can be applied to small-area central heating or household heating, and can also be used as a power generation boiler.

2. The chimney is set on the upper part of the dust tank, and the exhausted gas floats to the chimney to be discharged. The swirling flue gas carries the burnt ash to the position of the dust chute and falls to the grate, which greatly reduces the discharge of dust along the chimney and reduces the pollution to the environment.

3. The water storage tank and the water outlet of the heating container cooperate with the furnace cover to form a closed top except for the chimney at the upper end of the furnace body, and the heating area of the water storage tank is large, so that the water in the water storage tank is fully heated.

4. The high-temperature mesh furnace and porous furnace plate can slow down the flow of flue gas from insufficient combustion, make the air and flue gas fully mixed, and can also play a role in heating and supporting combustion. The rotation direction of the spiral air duct is the same as that of the heating coil, which can make the flue gas rise smoothly along the heating coil and speed up the heat exchange.

Description of drawings

Fig. 1 is the internal view of the present invention with part of the body of furnace removed;

Fig. 2 is a furnace body view of the present invention;

Fig. 3 is the grate of the present invention and gas pipeline view;

Fig. 4 is a heating container view of the present invention;

Fig. 5 is a furnace view of the present invention;

Fig. 6 is a side furnace cover view of the present invention;

In the figure: 1, heating container, 2, furnace, 3, furnace body, 4, furnace cover; 101, water outlet, 102, water storage tank, 103, heating coil, 104, water inlet; 201, furnace rod , 202, furnace net, 203, furnace plate; 301, gas pipeline, 302, grate, 303, gas hole, 304, spiral air duct, 305, fuel port, 306, damper, 307, chimney, 308, dust tank ; 401, sealing of the water storage tank, 402, sealing of the water inlet.

Detailed ways

In order to better understand the present invention, the implementation manner of the present invention will be explained in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 6, a dual-purpose boiler for power generation and heating that can use solid fuel and gas includes a heating container 1, a furnace 2, a furnace pole 201, a furnace body 3, a furnace cover 4, and a grate 302 , Heating coil pipe 103, spiral air pipe 304, gas pipeline 301, gas hole 303. A furnace cover 4 covers the upper end of the furnace body 3 , and the heating vessel 1 is arranged on the furnace cover 4 . The water storage tank 102 of the heating vessel 1 and the water inlet 104 cooperate with the furnace cover 4, and the sealing method is used to seal the water storage tank seal 401 and the water inlet seal 402, forming an airtight top except the chimney 307 at the upper end of the body of heater 3, and the water storage tank 102 The heating area is large, so that the water in the water storage tank 102 is fully heated.

The heating container 1 bottom is a heating coil 103, and the heating coil 103 stretches into the body of the furnace, so that the combustion heat can be fully utilized, and the water in the heating container 103 can be fully heated no matter the fuel with high calorific value or low calorific value.

The fire grate 302 is arranged at the bottom of the furnace body 3 , and the furnace furnace 2 is fixed on the fire grate 302 through the furnace furnace pole 201 at its lower part, and the furnace furnace 2 is in the center of the heating coil 103 . The spiral air duct 304 extends obliquely upwards to the top of the fire grate 302 along the wall of the body of heater 3. When more air volume is needed, the same spiral air duct 304 can be added at other positions of the body of heater 3. If necessary, the outer surface of the spiral air duct 304 The port can be connected with a fan for air supply. For example, there are multiple spiral air pipes, and the multiple spiral air pipes are arranged at different heights of the furnace body or evenly distributed at the same height.

The gas pipeline 301 is arranged on the grate 302, and the gas pipeline 301 is provided with a gas hole 303. Gas can be used alone as fuel, or gas and solid fuel can be used together. The high-temperature reticular furnace 2 and the porous furnace pan 203 can slow down the flow of insufficiently combusted flue gas, make the air and flue gas fully mixed, and can also play the role of heating and combustion-supporting.

The fuel port 305 and damper 306 are opened on the furnace body 3 wall, the furnace body 3 wall is provided with a dust tank 308, the chimney 307 is arranged on the upper part of the dust tank 308, the lower part of the dust tank cooperates with the grate 302, and the exhausted gas floats to the chimney 307 discharge. The cross-section of the dust tank is rectangular, and when the swirling flue gas floats to the dust tank 308 with the completely burnt ash, a vortex is formed in the dust tank, the wind speed slows down, and the furnace ash falls to the fire grate 302 along the dust tank.

The water storage tank 102 is a disc-shaped hollow container, the water outlet 101 is arranged on the upper part of the water storage tank 102, and the lower end of the heating coil 103 is connected to the water inlet 104 through a pipe. The external cold water pipe is connected to the water inlet 104, the cold water heating coil 103 is used for heating, and the high temperature water flows into the water storage tank 102 to continue heating. Then the water flow rate can be increased, and the heated water or steam flows out to the external hot water pipe through the water outlet 101 .

The furnace grid 202 is a refractory metal mesh, and the furnace pan 203 is a porous refractory material. The high-temperature reticular furnace 2 and the porous furnace pan 203 can slow down the flow of insufficiently combusted flue gas, make the air and flue gas fully mixed, and can also play the role of heating and combustion-supporting.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (5)

1. a kind of generating heating boiler for dual purpose using solid fuel and combustion gas, including heating container, flue, body of heater, bell, Fire grate, heating coil, gas pipeline, fuel gas hole, fuel port, air door, chimney, dust groove, the fuel port and air door are opened in stove On body wall, fuel port is located at the top of fire grate, and air door is located at the bottom of fire grate, it is characterized in that, bell is covered in body of heater upper end, heating Container is located on bell, and heating lower vessel portion is heating coil, and heating coil is stretched into body of heater, and fire grate is located at lower portion of furnace body, stove Courage is central in heating coil, and wall of the spiral duct along body of heater, which tilts upward, extends fire grate top, and gas pipeline is located on fire grate, Gas pipeline is provided with fuel gas hole, and inboard wall of furnace body is provided with the dust groove of up/down perforation, and chimney is located at dust groove top, dust groove Bottom coordinates with fire grate, and the heating container includes storage tank, water inlet, delivery port, and storage tank is disc hollow container, is gone out The mouth of a river is located at water storage upper box part, and heating coil lower end is connected to water inlet by pipeline, and described flue is upper including being connected The stone or metal plate for standing a stove on as a precaution against fire in portion, middle flue net, the flue pole of bottom, flue net are refractory metal net, and stone or metal plate for standing a stove on as a precaution against fire is porous refractory, stove Hymecromone is crossed flue pole and is fixed on fire grate, and described heating coil uses helical structure.

2. a kind of generating heating boiler for dual purpose using solid fuel and combustion gas according to claim 1, it is characterized in that, Described bell is provided with storage tank sealing, delivery port sealing.

3. a kind of generating heating boiler for dual purpose using solid fuel and combustion gas according to claim 1, it is characterized in that, Described spiral duct is provided with more, and more spiral ducts are arranged in the different height position of body of heater or in sustained height position Uniformly.

4. a kind of generating heating boiler for dual purpose using solid fuel and combustion gas according to claim 3, it is characterized in that, The external port of spiral duct is connected with blower fan.

5. a kind of generating heating boiler for dual purpose using solid fuel and combustion gas according to claim 1, it is characterized in that, The horizontal cross-section of the dust groove is rectangle or arcuate structure.