CN201340073Y

CN201340073Y - Coal fired boiler

Info

Publication number: CN201340073Y
Application number: CNU2008201828033U
Authority: CN
Inventors: 沈兆君
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-24
Filing date: 2008-12-24
Publication date: 2009-11-04
Anticipated expiration: 2018-12-24

Abstract

The utility model provides a coal fired boiler, which comprises a boiler body, an induced draught fan, a devulcanizing dust removing device and a frequency control device, the boiler body of the coal fired boiler comprises a soot door, a stationary grate, a second coal port, a second combustion chamber, a heat pipe fire grate, a first coal port, a first combustion chamber, a heat induction device, an inner hull hanging type hearth, a third combustion chamber, a honeycomb pipe and a settling chamber from the bottom part upwards, the inner hull hanging type hearth is positioned below the boiler wall, a fire hole is positioned in the second combustion chamber, and the hearth penetrates through the second combustion chamber, the first combustion chamber and the third combustion chamber from below to above. The design of super long smoke pass and compact structure of the boiler increases the water capacity and also the thermal efficiency, and the utility model provides the coal fired boiler with sufficient burning, coal saving, even heat exchange and standardized environmental protection specification.

Description

A kind of coal-burning boiler

Technical field

The utility model relates to a kind of coal-burning boiler.

Background technology

Problems such as present widely used coal-burning boiler exists the insufficient effect of coal saving of burning poor, and the inhomogeneous environmental protection of heat exchange is not up to standard.

Summary of the invention

For addressing the above problem, the technical problems to be solved in the utility model provides the coal-burning boiler that a kind of sufficient combustion is saved coal, the even environment protection standard of heat exchange.

Structure of the present utility model comprises body of heater 1, air-introduced machine 19, desulfation dust-extraction device 20, RHVC 22, the body of heater 1 of coal-burning boiler, up comprise shoot door 2 from the bottom, fixed grate 18, second coal feeding hole 3, second combustion chamber 7, heat pipe grate 17, first coal feeding hole 5, first combustion chamber 6, heat induction device 21, suspended-liner-type burner hearth 4, the 3rd combustion chamber 8, honeycomb duct 9, expansion chamber 10, suspended-liner-type burner hearth 4, be positioned at below around the furnace wall, fire door is arranged in second combustion chamber 5, burner hearth 4, run through second combustion chamber 5 from the bottom up, first combustion chamber 7, the 3rd combustion chamber 8.This stove is introduced suspended-liner-type burner hearth 4, and the design of the cigarette journey of overlength, and compact boiler structure has not only increased water capacity, has also improved the thermal efficiency.

Coal-burning boiler of the present utility model also comprises spiral vortex pipe 12, and described spiral vortex pipe 12 places between the expansion chamber 10 and second combustion chamber 7, can reach the reduction flue gas flow rate, strengthens the heat exchange effect.

Coal-burning boiler of the present utility model also comprises phase-change heat transfer pipe 11, and this phase-change heat transfer pipe 11 is positioned at the top of boiler, and on the expansion chamber 10, phase-change heat transfer pipe 11 is elongated, and it is faster to conduct heat.

Coal-burning boiler of the present utility model also comprises electrodeless converter plant 22, and electrodeless converter plant 22 is connected with heat induction device 21 with air-introduced machine 19, can realize stepless time adjustment.

The tube head of the 3rd combustion chamber 8 of the utility model coal-burning boiler designs for bend pipe, and cyclone firing reaches the effect of smoke elimination.

Description of drawings

Fig. 1 is the schematic diagram of coal-burning boiler of the present utility model.

Reference numeral: 1-body of heater; The 2-shoot door; 3-second coal feeding hole; 4-suspended-liner-type burner hearth; 5-first coal feeding hole; 6-first combustion chamber; 7-second combustion chamber; 8-the 3rd combustion chamber; The 9-honeycomb duct; The 10-expansion chamber; 11-phase-change heat transfer pipe; 12-spiral vortex pipe; The 13-delivery port; 14-normal pressure mouth; The 15-water return outlet; The 16-sewage draining exit; The 17-heat pipe grate; The 18-fixed grate; The 19-air-introduced machine; The 20-desulfation dust-extraction device; The 21-heat induction device; The electrodeless converter plant of 22-.

The specific embodiment

Below in conjunction with drawings and the specific embodiments the concrete structure that the utility model proposes is further described.

As shown in Figure 1, earlier add fashionable from first coal feeding hole 5 coal during coal-burning boiler point stove of the present utility model, transfer coal, on put bavin and light, start air-introduced machine 19, flame returns second combustion chamber 7 by first combustion chamber 5 under the negative pressure power traction, can open second coal feeding hole 3 this moment a little, provide and join oxygen to reduce negative pressure, after treating that flame increases gradually, again second coal feeding hole 3 is closed fully, first coal feeding hole 5 is opened, and this moment, flame was by suspended-liner-type combustion chamber 4, to the 3rd combustion chamber 8, form parabolic shape flame, simultaneously with surplus cigarette after-flame, flue gas arrives expansion chamber 10 by honeycomb duct 9 again, its dust and carbon dioxide etc. have burnt totally, and the low high temperature heat transfer effect of phase-change heat transfer pipe 11 performances this moment absorbs heat energy rapidly, flow out through spiral vortex pipe 12, the flue gas after the outflow contains sulfide etc. and filters the back through desulfurizing dust-collector and discharge in the atmosphere again.Burnt away in second combustion chamber 7 by first combustion chamber 6, the coal that drops in the combustion process, the ash that burns is gone out clearly by the deashing doorway again.After furnace temperature raises, can open the affiliated facility water pump hot water is extracted out by delivery port 13, cold water is sent back to by water return outlet 15, and is too high and vaporize as temperature, can discharge by normal pressure mouth 14 this moment, and the assurance boiler safety, boiler is regularly used sewage draining exit 16 blowdowns.

When stove begins to light, since the high-temperature region below in second combustion chamber 7, and cold water area is got back to the stove from water return outlet 15, high low temperature neutralization makes temperature equalization, and after furnace temperature rises, be located at heat induction device 21 in the burner hearth, the thermal source signal is passed to electrodeless variable-frequency governor 22, automatically raise or reduce rotating speed by air-introduced machine 19, to reach reasonable wind distribution, the uniform purpose of heat exchange.

Claims

1, a kind of coal-burning boiler, comprise body of heater (1), air-introduced machine (19), desulfation dust-extraction device (20), RHVC (22), it is characterized in that: the body of heater of described coal-burning boiler (1) up comprises shoot door (2) from the bottom, fixed grate (18), second coal feeding hole (3), second combustion chamber (7), heat pipe grate (17), first coal feeding hole (5), first combustion chamber (6), heat induction device (21), suspended-liner-type burner hearth (4), the 3rd combustion chamber (8), honeycomb duct (9), expansion chamber (10), described suspended-liner-type burner hearth (4) is positioned at below around the furnace wall, fire door is arranged in second combustion chamber (5), and burner hearth (4) runs through second combustion chamber (5) from the bottom up, first combustion chamber (7), the 3rd combustion chamber (8).

2, coal-burning boiler as claimed in claim 1 is characterized in that: described coal-burning boiler also comprises spiral vortex pipe (12), and described spiral vortex pipe (12) places between second combustion chamber (7) and the expansion chamber (10).

3, coal-burning boiler as claimed in claim 1 is characterized in that: described coal-burning boiler also comprises phase-change heat transfer pipe (11), and described phase-change heat transfer pipe (11) is positioned at the top of boiler, on the expansion chamber.

4, coal-burning boiler as claimed in claim 1 is characterized in that: described coal-burning boiler also comprises electrodeless converter plant (22), and described electrodeless converter plant (22) is connected with heat induction device (21) with air-introduced machine (19).

5, coal-burning boiler as claimed in claim 1 is characterized in that: the tube head of described the 3rd combustion chamber (8) designs for bend pipe.