CN2725716Y

CN2725716Y - Heat accumulation type secondary combustion smokeless atmospheric boiler

Info

Publication number: CN2725716Y
Application number: CN 200420042062
Authority: CN
Inventors: 段小刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-18
Filing date: 2004-06-18
Publication date: 2005-09-14
Anticipated expiration: 2014-06-18

Abstract

The utility model relates to a heat accumulation type secondary combustion smokeless atmospheric boiler, which is characterized in that the inner part of the boiler chamber is fixedly provided with an annular boiler arch which is provided with a whirlwind burner which is composed of a cylinder-shaped body; the side of the cylinder-shaped body is provided with a whirlwind path; the inner wall of the boiler chamber above the whirlwind burner is provided with a bow-shaped heating water pipe which is radially arranged in the boiler chamber along the center of the circle of the boiler chamber; the boiler chamber on the lower side of the annular boiler arch is provided with a wind guiding groove and a secondary air hole, and the inner part of the wind guiding groove is provided with a tertiary air port. The utility model has simple structure, low cost, and convenient use. Since the inner wall of the boiler chamber is fixedly provided with the annular boiler arch and the whirlwind burner manufactured by fireproofing materials, the heat accumulation type secondary combustion smokeless atmospheric boiler has the functions of preventing the dust and storing the heat on the neck; the heat accumulation type secondary combustion smokeless atmospheric boiler can cause the coal-fired smoke to conduct the secondary combustion; the temperature of the boiler cavity is greatly improved, the smoke can conduct the complete combustion, and accordingly, the effects of smoke prevention and dust removal can be obtained.

Description

The smokeless normal-pressure boiler of a kind of heat accumulating type second-time burning

One, technical field

The utility model relates to a kind of normal-pressure boiler, the smokeless normal-pressure boiler of specifically a kind of heat accumulating type second-time burning.

Two, background technology

Designing normal-pressure boiler from energy savings and point of view of environment protection, is the long-term mentalities of designing of vast boiler design personnel, can make the flue dust of boiler emission fewer and feweri like this, has purified air, has saved the energy.Though currently marketed most of normal-pressure boiler is being done a large amount of improvement aspect energy savings and the environmental protection; as take anti-double-layer grate structure and the individual layer fire grate normal burning forced ventilation structure of burning of secondary; all still there is a certain amount of flue dust emission problem that exceeds standard in these two kinds coal-fired normal-pressure boilers through practice test; the former defective is the manufacturing cost height; coal adaptability difference and complicated operation, especially soot emissions are still bigger when throwing coal or putting a chimney on the stove and make the fire draw.The latter is the twice aeration that covets, and has not only reduced the phenomenon that fire box temperature but also flue dust flow process rear still have the completing combustion of failing, and smoke medicining dust-removing effect still is not very desirable.

Three, utility model content

The utility model is to have above defective and propose a kind of new technical scheme in order to solve existing normal-pressure boiler structural design.

The technical scheme that the designing technique defective of its existence of solving the utility model is adopted is: the smokeless normal-pressure boiler of a kind of heat accumulating type second-time burning, it is to be connected and composed by flue and the fixing sealing of shell, be provided with impact tube between the flue and the external world, be provided with the heating pipe at the flue inner chamber, the sealing water cavity that forms between heating pipe two ends and flue and the shell is connected, the lower end is provided with fire grate, fire grate is provided with air blast below by the air feed house steward, be provided with firing door by flue and shell, be provided with water inlet at the shell side face, delivery port, blow the ash mouth, the water level meter, thermometer and sewage draining exit, be provided with the normal open mouth above the shell, in flue, be fixed with annular chimney arch, the annular chimney arch is provided with vortex burner, described annular chimney arch is a cylinder, be provided with outlet flue at the cylinder center, described vortex burner shape is a cylindrical body, is provided with the whirlwind road in cylindrical body vortex burner side; Be provided with arc heating pipe on the inboard wall of furnace on vortex burner, described arc heating pipe in flue along the radial setting in the flue center of circle; Be provided with wind guide tank and secondary air hole on the flue below annular chimney arch, be provided with tertiary air orifice in the wind guide tank, air blast, air feed house steward are connected with cyclone, described cyclone is to be made of circular shell that seals and the conical wind-guiding post that is located in the circular shell, be provided with air outlet above the circular shell and be connected with air main, the side is provided with air inlet and is connected with air blast by the air feed house steward.

Be shaped as spill below the annular chimney arch, the air outlet of annular chimney arch is identical with the internal diameter size of cylindrical body vortex burner, and the whirlwind road set in cylindrical body vortex burner side upwards is provided with for rotation; Tertiary air orifice and the secondary air hole set in the flue side all are provided with along the flue tangential direction.Be provided with annular hot blast groove between shell and flue, the air inlet of annular hot blast groove is connected with dividing branch wind pipe, and air outlet is connected by cavity between housing and the flue.

The beneficial effects of the utility model are: owing to be fixed with annular chimney arch and the vortex burner that refractory material is made at inboard wall of furnace, has the effect of eck resistance dirt, can make coal smoke carry out second-time burning, improved the temperature of burner hearth greatly, and have igniting fast, burn characteristics such as fast, quick heating.Flue gas after the burner hearth internal-combustion is located heat accumulating type secondary cyclone burner through being positioned at annular chimney arch upper end " eck ", play the effect of accumulation of heat on the one hand, treat that simultaneously temperature is raised to the combustible in the firing temperature time point burning fume, reach again the fully purpose of burning and smoke abatement and dust control.Dispose one, two, three ventilation, and two, three ventilations all enter burner hearth along flue stage construction tangential direction, in burner hearth, form a rotation " tubular " high-temp combustion air-flow, the high-temperature combustible gas body can farthest fully mixed, can supply with the required sufficient oxygen of completing combustion, can play simultaneously the effect of preheating and drying again, make flue dust completing combustion, thereby reach the effect of smoke abatement and dust control.

Convection heating surface adopts arc heating pipe bundle, concentrate heat absorption, remedied that burner hearth partly adopts flame retardant coating and the heating surface area that produces foot phenomenon not, thereby the thermal efficiency is higher, has saved coal power resource greatly.The utility model is because the fire box temperature height adds and force to give wind that very extensive to coal adaptability, because smoke medicining dust-removing effect is thorough, boiler only needs several meters with chimney, has saved the security that cost has improved boiler again.

Four, description of drawings

Accompanying drawing 1 is the utility model inner body structural representation;

Accompanying drawing 2 is the utility model external structure schematic diagrames;

Accompanying drawing 3 is that the A-A of the utility model accompanying drawing 1 is to cross-sectional schematic;

Accompanying drawing 4 is that the B-B of the utility model accompanying drawing 2 is to cross-sectional schematic;

Accompanying drawing 5 is vortex burner in the utility model accompanying drawing 1 (8) schematic diagrames;

Accompanying drawing 6 is the utility model accompanying drawing 5 left views;

Accompanying drawing 7 is that the A-A of vortex burner in the utility model accompanying drawing 5 (8) is to cross-sectional schematic;

Accompanying drawing 8 is structure cross-sectional schematic of cyclone in the utility model accompanying drawing 1 (16);

Accompanying drawing 9 is left views of the utility model accompanying drawing 8;

Accompanying drawing 10 is vertical views of the utility model accompanying drawing 8.

Among the figure: the 1st, the shell end socket, the 2nd, impact tube, the 3rd, shell, 4 conical heads, the 5th, flue, the 6th, arc water pipe, the 7th, arc water pipe, the 8th, vortex burner, the 9th, blow the ash mouth, the 10th, annular chimney arch, the 11st, tertiary air orifice, the 12nd, secondary air hole, the 13rd, firing door, the 14th, the hot blast groove, the 15th, shoot door, the 16th, cyclone, the 17th, air blast, the 18th, wind guide tank, the 19th, the whirlwind road, the 20th, the air feed house steward, the 21st, fire grate, the 22nd, water inlet, the 23rd, delivery port, the 24th, the normal open mouth, the 25th, suspension ring, the 26th, the water level meter, 27 Tobacco Control devices, the 28th, thermometer, the 29th, sewage draining exit.

Five, the specific embodiment

Below being fixed with, existing boiler furnace inwall middle part is the annular chimney arch (10) of spill, be provided with rewinding body vortex burner (8) above the annular chimney arch (10), vortex burner (8) side is provided with whirlwind road (19), makes and forms a cyclonic air flow passage between annular chimney arch (10) and the vortex burner (8).Be provided with heating arc water pipe (6,7) on flue (3) inwall on vortex burner (8), heat arc water pipe (6,7) and in flue (5), be connected with the formed airtight cavity of shell (3) along the radial setting in the flue center of circle and with flue (5).The secondary air hole (12) that is provided with wind guide tank (18) on the flue (5) below annular chimney arch (10) and is provided with along flue (5) tangent to periphery direction, be provided with tertiary air orifice (11) along flue tangent to periphery direction in wind guide tank (18), hot blast such two, tertiary air orifice enters " tubular " high-temp combustion air-flow that burner hearth just forms a rotation.Bituminous coal is added by firing door (13) and lights, drive air blast (17) after the igniting and regulate one, two, tertiary air quantity is ascending, combustible and high-temperature flue gas fully mix the vortex burner (8) with accumulation of heat and second-time burning effect that " eck " that flue gas after the forced burning enters annular chimney arch (10) top, center located in burner hearth, because vortex burner (8) side is provided with whirlwind road (19), just between vortex burner (8) and annular chimney arch (10), leave smoke dust duct, carry out accumulation of heat on the one hand, ignited flammable gas when treating simultaneously that temperature reaches suitable, rotary combustion once more here, burn the arc water pipe (6 of back high-temperature flue gas transversal flow convection heating surface, 7) after, enter impact tube (2) and chimney and discharge.

One time wind enters cyclone (16) air intake vent by air blast (17) behind air feed house steward (20), and the wind-force Rotating with Uniform blows to fire grate (21) bottom.

Two, tertiary air enters annular hot blast groove (14) by air feed house steward (20) branched pipe, enter again along the equally distributed wind guide tank of circumference (18) and distribute to secondary air hole (12) and tertiary air orifice (11), its air channel all evenly is provided with along flue (5) tangent to periphery direction, makes two, tertiary air can form the mixed airflow of " tubular " in burner hearth.

Vortex burner (8) with accumulation of heat and second-time burning function adopts refractory material to make, and it is fast to have an accumulation of heat, ignitable characteristics.

Be provided with cyclone (16) at air feed house steward (20) one ends, cyclone (16) is to be made of circular shell that seals and the conical wind-guiding post that is located in the circular shell, be provided with air outlet above the circular shell and be connected with air main, the side is provided with air inlet and is connected with air blast (17) by air feed house steward (20).

In order to make boiler more durable, be provided with shell end socket (1) in the welding of shell (3) upper end, be fixed with suspension ring (25) and Tobacco Control device (27) on the end socket (1).Be provided with shoot door (15) in shell (3) bottom.The top of flue (5) is conical head (4) and welds fixing mutually with flue.

The utility model uses in practice and observes as can be seen at coal and do not emit flue dust when putting a chimney on the stove and make the fire draw, machine (17) turns off the blast after burning is normal, the automatic ignited flammable gas of heat accumulating type secondary cyclone burner (8) meeting, chimney is not still smoldered, reached the effect of smoke abatement and dust control to greatest extent, realized bituminous coal combustion standardization discharging, alleviated the pollution of bituminous coal combustion greatly environment, improve coal heat energy utilization rate, saved the energy.

Claims

1, the smokeless normal-pressure boiler of a kind of heat accumulating type second-time burning, it is to be connected and composed by flue (5) and the fixing sealing of shell (3), be provided with impact tube (2) between the flue (5) and the external world, be provided with heating pipe (6 at flue (5) inner chamber, 7), the heating pipe (6,7) the sealing water cavity that forms between two ends and flue (5) and the shell (3) is connected, the lower end is provided with fire grate (21), fire grate (21) is provided with air blast (17) below by air feed house steward (20), be provided with firing door (13) by flue (5) and shell (3), be provided with water inlet (22) in shell (3) side, delivery port (23), blow ash mouthful (9), water level meter (26), thermometer (28) and sewage draining exit (29), be provided with normal open mouth (24) above the shell (3), it is characterized in that: in flue (5), be fixed with annular chimney arch (10), annular chimney arch (10) is provided with vortex burner (8), described annular chimney arch (10) is a cylinder, be provided with outlet flue at the cylinder center, described vortex burner (8) shape is a cylindrical body, is provided with whirlwind road (19) in cylindrical body vortex burner (8) side; Be provided with arc heating pipe (6,7) on flue (5) inwall on vortex burner (8), described arc heating pipe (6,7) in flue (5) along the radial setting in the flue center of circle; Be provided with wind guide tank (18) and secondary air hole (12) on the flue (5) below annular chimney arch (10), be provided with tertiary air orifice (11) in the wind guide tank (18), air blast (17), air feed house steward (20) are connected with cyclone (16), described cyclone (16) is to be made of circular shell that seals and the conical wind-guiding post that is located in the circular shell, be provided with air outlet above the circular shell and be connected with air main, the side is provided with air inlet and is connected with air blast (17) by air feed house steward (20).

2, the smokeless normal-pressure boiler of a kind of heat accumulating type second-time burning according to claim 1, it is characterized in that: annular chimney arch is shaped as spill below (10), the air outlet of annular chimney arch (10) is identical with the internal diameter size of cylindrical body vortex burner (8), and the whirlwind road (19) set in cylindrical body vortex burner (8) side upwards is provided with for rotation; Set tertiary air orifice (11) and secondary air hole (12) are all along flue (5) tangential direction setting in flue (5) side.

3, the smokeless normal-pressure boiler of a kind of heat accumulating type second-time burning according to claim 1 and 2, it is characterized in that: between shell (3) and flue (5), be provided with annular hot blast groove (14), the air inlet of annular hot blast groove (14) is connected with the branch branch wind pipe, and air outlet is connected by cavity between housing (3) and the flue (5).