Tail flue of biomass boiler

Abstract

The utility model discloses a biomass boiler tail flue which comprises a flue body and a liquid collector, the flue body comprises a transverse flue, a longitudinal flue and an arc-shaped section, the transverse flue and the longitudinal flue are connected through the arc-shaped section, a liquid inlet hole is formed in the bottom of the arc-shaped section, the liquid collector is installed on the lower portion of the arc-shaped section, and the interior of the liquid collector is communicated with the liquid inlet hole. The liquid collector comprises a buffer pipe, the buffer pipe is fixed with the flue main body, the lower part of the buffer pipe is connected with a connecting pipe, the lower part of the connecting pipe is connected with a settling tank, and the liquid inlet hole, the buffer pipe, the connecting pipe and the settling tank are communicated. The liquid collector is arranged below the longitudinal pipeline of the tail flue, so that water accumulation of the tail flue can be avoided, the anti-corrosion effect of the flue is improved, and the service life of the flue is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler exhaust smoke, more particularly, relate to a kind of tail flue of biomass boiler. BACKGROUND

[0002] The flue gas generated in the operation process of biomass boiler needs to be discharged after treatment, and the flue gas reaching the emission standard after treatment will flow to the tail of the flue. Due to the difference in composition of different biomass, the composition of the generated flue gas is also different. Although these flue gases have been treated, some flue gases discharged through the tail of the flue still contain acid and alkali substances. Since the tail of the flue is connected to the outside world, when the temperature decreases, part of the water in the flue gas condenses on the surface of the flue, and part of the water flows back into the flue, causing water to accumulate in the flue. These condensed water may contain acid and alkali substances in the flue gas, thereby corroding the flue and causing damage to the flue. Therefore, it is necessary to improve it. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of the prior art, providing a tail flue of biomass boiler. The liquid collector arranged below the longitudinal pipeline of the tail flue can avoid water accumulation in the tail flue, improve the corrosion resistance of the flue and prolong the service life of the flue.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tail flue of biomass boiler, comprising a flue body and a liquid collector, the flue body comprising a horizontal flue, a longitudinal flue and an arc segment, the horizontal flue and the longitudinal flue being connected by the arc segment, the arc segment being provided with a liquid inlet hole at the bottom, the liquid collector being installed at the lower part of the arc segment and being in communication with the liquid inlet hole inside, the liquid inlet hole being located below the longitudinal flue, the liquid collector comprising a buffer pipe, the buffer pipe being fixed with the flue body, the lower part of the buffer pipe being connected with a connecting pipe, the lower part of the connecting pipe being connected with a sediment tank, the liquid inlet hole, the buffer pipe, the connecting pipe and the sediment tank being in communication.

[0005] Further, the arc segment comprises a groove, the groove is located below the lowest part of the horizontal flue, and the liquid inlet hole is located at the bottom of the groove.

[0006] Further, the inner wall of the longitudinal flue is provided with an annular rib, the upper surface of the annular rib is a first inclined surface inclined downward, and the lower surface is a second inclined surface inclined upward.

[0007] Further, the inner wall of the longitudinal flue is provided with an annular pipe, the side surface of the annular pipe is provided with a plurality of nozzles, and the nozzles are arranged towards the inner wall of the longitudinal flue.

[0008] Further, the buffer pipe is internally provided with a plurality of annular ribs, the plurality of annular ribs form a concentric circle structure, adjacent two annular ribs are provided with through holes, and adjacent two annular ribs and the outermost annular rib are connected with the inner wall of the buffer pipe through first connecting ribs.

[0009] Further, the buffer piece is internally provided with a plurality of annular ribs, the plurality of annular ribs form a concentric circle structure, adjacent two annular ribs are provided with through holes, and adjacent two annular ribs and the outermost annular rib are connected with the inner wall of the buffer pipe through first connecting ribs.

[0010] Further, the buffer piece is internally provided with a plurality of annular ribs, the plurality of annular ribs form a concentric circle structure, adjacent two annular ribs are provided with through holes, and adjacent two annular ribs and the outermost annular rib are connected with the inner wall of the buffer pipe through first connecting ribs.

[0011] Further, the buffer piece is internally provided with a plurality of annular ribs, the plurality of annular ribs form a concentric circle structure, adjacent two annular ribs are provided with through holes, and adjacent two annular ribs and the outermost annular rib are connected with the inner wall of the buffer pipe through first connecting ribs.

[0012] Further, the buffer piece is internally provided with a plurality of annular ribs, the plurality of annular ribs form a concentric circle structure, adjacent two annular ribs are provided with through holes, and adjacent two annular ribs and the outermost annular rib are connected with the inner wall of the buffer pipe through first connecting ribs.

[0013] Further, the buffer piece is internally provided with a plurality of annular ribs, the plurality of annular ribs form a concentric circle structure, adjacent two annular ribs are provided with through holes, and adjacent two annular ribs and the outermost annular rib are connected with the inner wall of the buffer pipe through first connecting ribs.

[0014] Therefore, the present application has the following beneficial effects:

[0015] Since the longitudinal flue is communicated with the external environment, the external environment has an influence on the longitudinal flue, and condensate water is condensed on the inner wall of the longitudinal flue. The condensate water falls from the longitudinal flue and enters the liquid collector through the liquid inlet hole, and is collected by the liquid collector, so that the condensate water is effectively prevented from accumulating in the flue and corroding the flue body, and the service life of the flue body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the embodiment;

[0017] Figure 2 It is a structural schematic view of the embodiment; Figure 1 It is an enlarged view of A;

[0018] Figure 3 It is a structural schematic view of the embodiment; Figure 1 It is a structural schematic view of the embodiment;

[0019] Figure 4 It is a structural schematic view of the embodiment; Figure 1 It is a structural schematic view of the embodiment;

[0020] Figure 5 It is a sectional view of the buffer pipe.

[0021] : 1, flue main body; 11, transverse flue; 12, longitudinal flue; 13, arc segment; 14, liquid inlet hole; 15, groove; 16, annular blocking rib; 161, first inclined surface; 162, second inclined surface; 2, buffer pipe; 21, annular rib; 22, through hole; 23, first connecting rib; 3, connecting pipe; 4, sediment tank; 41, drain pipe; 5, buffer piece; 51, tapered rib; 52, lower liquid hole; 53, blocking piece; 54, second connecting rib; 55, liquid passage; 6, annular pipe; 61, nozzle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] As shown in the drawings, Figures 1 to 5 The present embodiment discloses a biomass boiler tail flue, which comprises a flue main body 1 and a liquid collector. The flue main body 1 comprises a transverse flue 11, a longitudinal flue 12 and an arc segment 13. The transverse flue 11 and the longitudinal flue 12 are connected through the arc segment 13. The transverse flue 11 is connected to a middle flue (not shown in the drawings). The longitudinal flue 12 is in communication with the external environment. That is, the section from the transverse flue 11 to the longitudinal flue 12 is the boiler tail flue. The arc segment 13 is provided with a liquid inlet hole 14 at the bottom. The liquid collector is installed at the lower part of the arc segment 13 and is in communication with the liquid inlet hole 14 inside. The liquid inlet hole 14 is located below the longitudinal flue 12. Since the longitudinal flue 12 is in communication with the external environment, it is affected by the external environment. Condensed water is condensed on the inner wall of the longitudinal flue 12. The condensed water falls from the longitudinal flue 12 and enters the liquid collector through the liquid inlet hole 14. The condensed water is collected by the liquid collector, which can effectively prevent the condensed water from accumulating in the flue and corroding the flue main body 1, thereby improving the service life of the flue main body 1. The transverse flue 11 is in communication with the middle flue and is far away from the external environment. Therefore, the inner wall of the transverse flue 11 is almost free of condensed water. In the present embodiment, the transverse flue 11 is arranged in a structure inclined downward toward the arc segment 13. Even if a small amount of condensed water is generated on the inner wall of the transverse flue 11, it will flow into the liquid inlet hole 14 along the inclined surface.

[0024] The arc segment 13 comprises a groove 15. The groove 15 is located lower than the lowest part of the transverse flue 11. The liquid inlet hole 14 is located at the bottom of the groove 15. The groove 15 can be beneficial to the collection of condensed water.

[0025] The inner wall of the longitudinal flue 12 is provided with an annular pipe 6, a plurality of nozzles 61 are arranged on the side of the annular pipe 6, the nozzles 61 are arranged towards the inner wall of the longitudinal flue 12, the annular pipe 6 is fixed to the inner wall of the longitudinal flue 12 near the outer position through a connecting piece, the annular pipe 6 is connected with an external water source, by arranging the annular pipe 6, the inner wall of the longitudinal flue 12 can be flushed, so that the condensed water is not left on the inner wall of the longitudinal flue 12 for a long time, and the water flushed by the annular pipe 6 also flows into the liquid collector from the liquid inlet hole 14.

[0026] The inner wall of the longitudinal flue 12 is provided with an annular rib 16, the upper surface of the annular rib 16 is a first inclined surface 161 inclined downward, and the lower surface is a second inclined surface 162 inclined upward, by arranging the first inclined surface 161, the condensed water can be buffered and guided, so that the condensed water can be better collected, by arranging the second inclined surface 162, the influence of the annular rib 16 on the flue gas discharge effect can be reduced.

[0027] The liquid collector comprises a buffer pipe 2, the buffer pipe 2 is fixed with the flue body 1 through bolts, a plurality of annular ribs 21 are arranged in the buffer pipe 2, the plurality of annular ribs 21 form a concentric circle structure, a through hole 22 is arranged between adjacent two annular ribs 21, and the adjacent two annular ribs 21 and the outermost annular rib 21 are connected with the inner wall of the buffer pipe 2 through a first connecting rib 23, the annular rib 21 is in a ring sheet structure, and the formed through hole 22 is also in a sheet shape, so that when water enters the buffer pipe 2, the water is shunted through a plurality of through holes 22, buffering is realized, and the design of the sheet-shaped through hole 22 can also reduce the entry of flue gas.

[0028] The lower part of the buffer pipe 2 is connected with a connecting pipe 3, the connecting pipe 3 is fixed with the buffer pipe 2 through bolts, the lower part of the connecting pipe 3 is connected with a sediment tank 4, the sediment tank 4 is fixed with the connecting pipe 3 through bolts, the liquid inlet hole 14, the buffer pipe 2, the connecting pipe 3 and the sediment tank 4 are communicated, a drain pipe 41 is arranged on the side of the sediment tank 4, the drain pipe 41 is connected with an external device (not shown in the figure), and the external device can be a water purification device, the water falling from the liquid inlet hole 14 sequentially passes through the buffer pipe 2, the connecting pipe 3 and the sediment tank 4 of the liquid collector, and flows out from the drain pipe 41, since the water falling from the liquid inlet hole 14 contains impurities, the position of the drain pipe 41 is higher than the bottom of the sediment tank 4, so that some impurities can be deposited to the bottom of the sediment tank 4, primary filtration of the water is realized, and the risk of blockage of the pipeline connected with the drain pipe 41 is reduced, when the impurities in the sediment tank 4 accumulate to a certain degree, the sediment tank 4 can be disassembled, and the impurities in the sediment tank 4 can be cleaned.

[0029] The buffer piece 5 is internally provided with a conical rib 51, the lowest part of the conical rib 51 is provided with a lower liquid hole 52, the lower liquid hole 52 is opposite to the connecting pipe 3, the diameter of the lower liquid hole 52 is smaller than the inner diameter of the connecting pipe 3, the buffer piece 5 is provided with a baffle 53, the baffle 53 is below the lower liquid hole 52, the diameter of the baffle 53 is larger than the diameter of the lower liquid hole 52, the upper part of the baffle 53 is provided with a plurality of second connecting ribs 54, the upper part of the second connecting rib 54 is connected with the lower part of the conical rib 51, a liquid passing opening 55 is arranged between two adjacent second connecting ribs 54, and the baffle 53 is arc-shaped and high in the middle and low on the sides.

[0030] The buffer piece 5 is clamped and fixed by the connecting pipe 3 and the sedimentation tank 4, water falling from the connecting pipe 3 flows into the upper surface of the baffle 53 after passing through the lower liquid hole 52, and then flows into the sedimentation tank 4 through the liquid passing opening 55 after being buffered by the baffle 53, so that the water flow speed is avoided to be too fast, and water can be gathered to the lower liquid hole 52 for liquid discharge by arranging the conical rib 51.

[0031] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme belonging to the idea of the present application is within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. A biomass boiler backpass characterized in that, The flue body (1) comprises a transverse flue (11), a longitudinal flue (12) and an arc segment (13), the transverse flue (11) and the longitudinal flue (12) are connected through the arc segment (13), the arc segment (13) is provided with a liquid inlet hole (14) at the bottom, the liquid collector is installed at the lower part of the arc segment (13) and communicates with the liquid inlet hole (14) inside, the liquid inlet hole (14) is located below the longitudinal flue (12), the liquid collector comprises a buffer pipe (2), the buffer pipe (2) is fixed with the flue body (1), the lower part of the buffer pipe (2) is connected with a connecting pipe (3), the lower part of the connecting pipe (3) is connected with a sediment tank (4), the liquid inlet hole (14), the buffer pipe (2), the connecting pipe (3) and the sediment tank (4) communicate.

2. A biomass boiler backpass according to claim 1, characterised in that, The arc segment (13) comprises a groove (15), the position of the groove (15) is lower than the lowest part of the transverse flue (11), and the liquid inlet hole (14) is located at the bottom of the groove (15).

3. A biomass boiler backpass according to claim 1, wherein, The inner wall of the longitudinal flue (12) is provided with an annular blocking rib (16), the upper surface of the annular blocking rib (16) is a first inclined surface (161) inclined downward, and the lower surface is a second inclined surface (162) inclined upward.

4. A biomass boiler backpass according to claim 1, wherein, The inner wall of the longitudinal flue (12) is provided with an annular pipe (6), the side of the annular pipe (6) is provided with a plurality of nozzles (61), and the nozzles (61) are arranged towards the inner wall of the longitudinal flue (12).

5. A biomass boiler backpass according to claim 1, wherein, The buffer pipe (2) is provided with a plurality of annular ribs (21) inside, the plurality of annular ribs (21) form a concentric circle structure, a through hole (22) is arranged between adjacent two annular ribs (21), and the adjacent two annular ribs (21) and the outermost annular rib (21) are connected with the inner wall of the buffer pipe (2) through a first connecting rib (23).

6. A biomass boiler backpass according to claim 1, wherein, The sediment tank (4) is provided with a buffer piece (5) inside, the buffer piece (5) comprises an inverted conical rib (51), the lowest part of the conical rib (51) is provided with a lower liquid hole (52), the lower liquid hole (52) faces the connecting pipe (3), and the diameter of the lower liquid hole (52) is smaller than the inner diameter of the connecting pipe (3).

7. A biomass boiler backpass according to claim 6, wherein, The buffer piece (5) comprises a baffle (53), the baffle (53) is located below the lower liquid hole (52), the diameter of the baffle (53) is greater than that of the lower liquid hole (52), and a gap is formed between the upper part of the baffle (53) and the lower part of the lower liquid hole (52).

8. A biomass boiler backpass according to claim 7, wherein, The upper edge of the baffle (53) is provided with a plurality of second connecting ribs (54), the upper part of the second connecting rib (54) is connected with the lower part of the conical rib (51), and a liquid passing port (55) is arranged between adjacent two second connecting ribs (54).

9. A biomass boiler backpass according to claim 7, wherein, The baffle (53) is an arc shape with high middle and low sides.

10. A biomass boiler backpass according to claim 9, wherein, The side of the sediment tank (4) is provided with a drain pipe (41), the position of the drain pipe (41) is higher than the bottom of the sediment tank (4) and lower than the buffer piece (5).

Images