CN201093716Y

CN201093716Y - Energy-saving boiler with fire returning ring

Info

Publication number: CN201093716Y
Application number: CNU2007201050380U
Authority: CN
Inventors: 徐润华
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-24
Filing date: 2007-09-24
Publication date: 2008-07-30
Anticipated expiration: 2017-09-24

Abstract

The utility model discloses an energy saving boiler with an annealing ring, which can be used for burning coal, firewood, gas and fuel, in particular to a boiler in which flue gas flows circularly, and the flue gas escaping from the existing boiler with an annealing device has higher temperature, which results in the resource waste. For solving the problem, the utility model provides a boiler which comprises a boiler provided with an internal furnace, and a chimney outlet is arranged under the boiler; the annealing ring is arranged in the internal furnace, and the chimney outlet of the annealing ring is provided with a chimney; a water jacket is arranged at the middle lower part of the chimney, and the lower end of the water jacket is provided with a water intake pipe which is communicated with a feed-tank; the upper end of the water jacket is provided with a water outlet pipe which is communicated with the lower end of the boiler, and the upper end of the boiler has an water outlet. When the annealing energy saving boiler is used, the heat in the flue gas is conducted to flow into the water jacket when the flue gas flows through the middle of the chimney, and the residual heat of the end gas is fully utilized.

Description

A kind of power economized boiler of bringing pyrosphere back to

Technical field

The utility model belongs to the boiler technology field of the usefulness of heating up water, and relates to the fiery power economized boiler that returns that a kind of flue gas circulates in burner hearth.

Background technology

The existing boiler of bringing fiery device back to can absorb the heat of the most of flue gas in the flue, yet the flue gas of overflowing from this boiler still has higher temperature, if the flue gas of these discharges is not used, will cause the wasting of resources.

The utility model content

The purpose of this utility model provides a kind of boiler that can effectively utilize using waste heat from tail gas, for solving the unemployed problem of flue gas heat that the existing boiler of bringing fiery device back to is discharged, the utility model provides a kind of power economized boiler of bringing pyrosphere back to, can be used for coal combustion, bavin, combustion gas, fuel oil, its embodiment is as follows:

A kind of power economized boiler of bringing pyrosphere back to, can be used for coal combustion, bavin, combustion gas, fuel oil, comprise boiler, flue is arranged in the boiler, there is chimney breast the below in the boiler, a back-fire ring that is installed in the tubular on the flue chassis is arranged in the flue, back-fire ring and inboard wall of furnace are gapped, the chimney outlet of the bottom in gap is equipped with chimney, and water jacket is equipped with in the chimney middle and lower part, and the water jacket lower end is equipped with the water jacket water inlet pipe with the water jacket intracavity inter-connection, the water jacket water inlet pipe is connected with feed-tank, the water jacket upper end is equipped with the outlet pipe with the water jacket intracavity inter-connection, and the water jacket outlet pipe is connected with the boiler lower end, and there is delivery port the boiler upper end.

This operation principle of returning fiery power economized boiler is as follows:

Produce a large amount of flue gases after the fuel combustion in the flue in the back-fire ring, the ascension that makes progress of the higher flue gas of temperature, when flue gas rises to the flue top, because gas pressure is bigger in the back-fire ring, upwards promote extruding top flue gas at back-fire ring middle part flue gas, the low-pressure area that the top flue gas begins between back-fire ring and inboard wall of furnace moves, be that the top flue gas moves down in returning fiery passage, fuel constantly burns, back-fire ring middle part flue gas constantly upwards promotes extruding top flue gas, the top flue gas constantly moves down in returning fiery passage, flow in the chimney through throat then, because flue gas making a circulation in returning fiery passage flowed the flow path of the flue gas of growth in flue, also increased the time of staying of flue gas in flue, the water in the most of heat boiler in the flue gas is absorbed; The flue gas of discharging outside the boiler from chimney breast still has higher temperature, when flue gas is flowed through the chimney middle part, owing on the lateral wall of chimney middle part water jacket is installed, water temperature in the water jacket is lower than flue-gas temperature, at this moment the heat in the flue gas is just gone in the water jacket by conduction flow, and the using waste heat from tail gas of discharging outside the boiler is fully absorbed.

In use, because the feed-tank vertical height is higher than boiler, water level in the water tank is higher than the water level in the boiler, therefore the water in the water tank just enters water jacket from the water inlet pipe of water jacket bottom, flue gas in the chimney that wraps up with water jacket in water jacket carries out after the heat exchange, flow out from the outlet pipe of water jacket upper end, enter in the boiler through the water after this flow process, and with flue in the flue gas that returns fiery passage of flowing through carry out heat exchange once more, fully absorb flue gas heat, according to user's needs, the delivery port on boiler is discharged from boiler at last.This boiler can be widely used in places such as hotel, dining room, collectiveity canteen, army dining room and factory, bathroom.

Description of drawings

Fig. 1 is the main cutaway view of the utility model embodiment one.

The specific embodiment

Embodiment one: a kind of power economized boiler of bringing pyrosphere back to as shown in Figure 1, can be used for coal combustion, bavin, combustion gas, fuel oil, comprise boiler 1, flue 2 is arranged in the boiler, on the madial wall of below chimney breast 10 is arranged in the boiler 1, a back-fire ring 14 that is installed in the tubular on the flue base 13 is arranged in the flue 2, all gapped between back-fire ring 14 and flue 2 tops and the sidewall, chimney outlet 10 is equipped with chimney 9, on the chimney 9 middle part lateral walls water jacket 6 is installed, water jacket 6 lower ends are equipped with the water jacket water inlet pipe 8 that is connected with water jacket inner chamber 7, water jacket water inlet pipe 8 is connected with feed-tank, water jacket 6 upper ends are equipped with the water jacket outlet pipe 5 that is connected with water jacket inner chamber 7, and water jacket outlet pipe 5 is connected with boiler 1 lower end, and there is delivery port 4 on boiler 1 top.

Embodiment two: a kind of as shown in Figure 1 power economized boiler of bringing pyrosphere back to, can be used for coal combustion, bavin, combustion gas, fuel oil, comprise boiler 1, flue 2 is arranged in the boiler, two chimney breasts 10 are arranged on the lower sidewalls in boiler 1 burner hearth, each chimney 10 exit all is equipped with chimney 9, on each chimney 9 middle part lateral wall corresponding water jacket 6 is installed, each water jacket 6 lower end is equipped with the water jacket water inlet pipe 8 that is connected with this water jacket inner chamber 7, each water inlet pipe 8 is connected with feed-tank, each water jacket 6 upper end is equipped with the water jacket outlet pipe 5 that is connected with water jacket inner chamber 7, and each outlet pipe 5 is connected with boiler 1 lower end.Owing to two chimney breasts 10 are installed, so therefore flue gas has improved the efficient of boiler heating from flue 2 interior outside diffusion velocities quickenings.

Horizontal water tube 12 is housed in boiler, horizontal water tube 12 is communicated with pot 1 inner chamber, fully absorb the calory burning in the burner hearth 18, because horizontal water tube 12 is close to back-fire ring 14, relative boiler 1 volume of its volume is much smaller simultaneously, therefore horizontal water tube 12 is heated comparatively fast, horizontal water tube 12 water temperatures rise faster than the water in its adjacent boiler 1, therefore hot water flows to the upper end in the horizontal water tube 12, the cold water that promotes boiler 1 inner top flows to circle 15 directions of getting a foothold, and the water near the boiler 1 the circle 15 of getting a foothold backflows into horizontal water tube 12 lower ends, water in boiler 1 forms interior circulation, the heat that helps the flue gas in the water fast Absorption burner hearth 18 in the boiler 1 is accelerated the programming rate of water in the whole boiler 1; There is sewage draining exit 11 boiler 1 lower end, but the dirt of knot in the boiler 1 is got rid of in periodic cleaning; Fire bars is arranged at burner hearth 18 bottoms, and a rotatable soot blower is housed on the fire bars, is convenient to the fire bars below is gone in the ashes overturning of after-flame on the fire bars, later on cleaning again.

Heat-insulation layer 3 is arranged outside the boiler 1, outside each water jacket 6 heat-insulation layer 17 is arranged, play insulation effect; And help fully absorbing flue gas heat, steam exhaust pipe is arranged, pressure self-unloading pipe 16 is arranged before the valve of blow-off pipe 11, water level observation tube 19 is housed on the boiler lateral wall at boiler 1 top.

Claims

1. power economized boiler of bringing pyrosphere back to, can be used for coal combustion, bavin, combustion gas, fuel oil, comprise boiler (1), flue (2) is arranged in the boiler (1), it is characterized in that: a back-fire ring (14) that is installed in the tubular on the flue chassis (13) is arranged in the described flue (2), gapped between back-fire ring (14) and flue (2) napex and the sidewall, bottom, gap between back-fire ring (14) and sidewall, be that there is chimney breast (10) below in the boiler, chimney breast (10) locates to be equipped with chimney (9), chimney (9) runs through boiler (1) sidewall inner chamber, water jacket (6) is equipped with in chimney (9) middle and lower part, water jacket (6) lower end is equipped with the water jacket water inlet pipe (8) that is connected with water jacket inner chamber (7), water jacket water inlet pipe (8) is connected with water supply tank, water jacket (6) upper end is equipped with the water jacket outlet pipe (5) that is connected with water jacket inner chamber (7), water jacket outlet pipe (5) is connected with boiler (2) lower end, there is delivery port (4) on boiler (2) top, boiler bottom has blow-off pipe (11), and the valve front end of blow-off pipe (11) is equipped with pressure self-unloading pipe (16).

2. a kind of power economized boiler of bringing pyrosphere back to according to claim 1, it is characterized in that: the below is provided with and is no less than a chimney breast (10) in the described boiler, each chimney breast (10) locates all to be equipped with chimney (9), on the outer wall of each chimney (9) middle and lower part corresponding water jacket (6) is installed, each water jacket (6) lower end is equipped with the water jacket water inlet pipe (8) that is connected with this water jacket inner chamber (7), each water jacket water inlet pipe (8) is connected with feed-tank, each water jacket (6) upper end is equipped with the water jacket outlet pipe (5) that is connected with water jacket inner chamber (7), and each water jacket outlet pipe (5) is connected with boiler (1) lower end.

3. a kind of power economized boiler of bringing pyrosphere back to according to claim 1 and 2, it is characterized in that: horizontal water tube (12) is arranged in the described burner hearth (18), horizontal water tube (12) passes back-fire ring (14) and burner hearth (18), the two ends of horizontal water tube (12) are connected on respectively on boiler (1) madial wall, are communicated with boiler (1) inner chamber; Fire bars is arranged at burner hearth (18) bottom, and a rotating soot blower is housed on the fire bars.

4. a kind of power economized boiler of bringing pyrosphere back to according to claim 3 is characterized in that: heat-insulation layer (15) is arranged outside the described boiler (1), and described each water jacket (6) is outer heat-insulation layer (17), on boiler (1) lateral wall water level observation tube (19) is housed.