Steam boiler device with compact structure

Abstract

The utility model discloses a steam boiler device with a compact structure, which comprises a burner, the burner penetrates through an outer flue to be fixed and communicated with the wall of an inner flue, and the outer flue is sleeved on the outer side of the inner flue; the waste heat recovery device is separated from the outer flue through a partition plate, and the outer flue communicates with the top of the waste heat recovery device through the middle flue. A heat exchanger is arranged in the waste heat recovery device, and a smoke outlet hole is formed in the bottom of the waste heat recovery device; the middle flue is Z-shaped; the waste heat recovery device has the advantages that the waste heat recovery device and the outer flue are integrally designed and are separated only through the partition plate, the overall appearance size of the boiler and the waste heat recovery device is reduced, the structure is more compact, the Z-shaped middle flue can form a corner on a flue gas flowing channel, then a flue gas flowing low-speed area is formed, dust in flue gas can be deposited in the Z-shaped flue, and the dust removal effect is improved. And dust entering the waste heat recovery device is reduced, and cleaning is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steam boiler of membrane wall structure form, especially relates to a steam boiler device of compact structure. BACKGROUND

[0002] The waste heat recovery device of steam boiler is usually designed in split type with the boiler body, so as to facilitate maintenance and transportation, the volume of the steam boiler body needs to be further reduced, so that the waste heat recovery device and the boiler body are integrated together, and the volume can be further reduced, therefore, it is an urgent requirement to change the split type design of the waste heat recovery device and the boiler body in the existing steam boiler, and make the overall structure more compact. SUMMARY

[0003] The utility model embodiment purposes at providing a steam boiler device of compact structure, aims at solving the technical problem of changing the split type design of the waste heat recovery device and the boiler body in the existing steam boiler, and making the overall structure more compact after inheritance.

[0004] The utility model embodiment is realized as follows:

[0005] A steam boiler device of compact structure, the steam boiler device includes a burner, the burner is fixed and communicated through the wall of the outer flue and the inner flue, and the outer flue is arranged on the outer side of the inner flue;The waste heat recovery device is separated from the outer flue by a partition, and the outer flue is communicated with the top of the waste heat recovery device through the intermediate flue;The waste heat recovery device is provided with a heat exchanger, the bottom of the waste heat recovery device is provided with a smoke hole, the bottom of the flue wall of the inner flue is provided with a water inlet hole, and the water is heated in the flue wall of the inner flue, the wall between the outer flue and the waste heat recovery device is provided with a heat preservation layer, the top of the inner flue is provided with a superheating tube, and the heat preservation layer is arranged between the superheating tube and the top of the inner flue;The intermediate flue is Z-shaped.

[0006] Further, the heat preservation layer is composed of a steel plate and an aluminum silicate fiber felt attached to the side of the steel plate.

[0007] Further, the outer side of the outer flue is provided with a box, the box is surrounded by a pair of first side wall and second side wall to form a rectangular barrel shape, the bottom surface of the box is fixed with a bottom wheel, the top of the box is fixed with a top wall, a top cover plate and a side wall cover plate, and the inner flue, the outer flue, the intermediate flue and the waste heat recovery device are arranged in the box.

[0008] Further, the inner side of the first side wall is provided with a fourth heat preservation layer, the fourth heat preservation layer is in the shape of a cylinder, and the fourth heat preservation layer and the flue wall of the inner flue form the outer flue.

[0009] Further, the third and sixth thermal insulation layers are arranged between the wall of the outer flue and the waste heat recovery device, so as to insulate the heat rising transmission of the inner flue, and ensure that the heat of the inner flue is more used for heating the water in the wall of the inner flue.

[0010] Further, the bottom of the inner flue and the outer flue is provided with a pouring layer, and the bottom of the pouring layer is provided with a fifth thermal insulation layer; the pouring layer is used for bearing and fixing the inner flue and the outer flue, and the fifth thermal insulation layer is used for keeping the heat of the bottom of the inner flue and the outer flue from being lost.

[0011] The positive effect of the utility model is: the waste heat recovery device is integrally designed with the outer flue, and is only separated by the partition plate, so that the overall size of the boiler and the waste heat recovery device is reduced, the structure is more compact, the Z-shaped intermediate flue can form a bend on the channel of the flue gas flow, and then form a low-speed area of the flue gas flow, so that the dust in the flue gas can be deposited in the Z-shaped flue, the dust entering the waste heat recovery device is reduced, and the cleaning is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structure schematic view of a steam boiler device with a compact structure according to the utility model;

[0013] Figure 2 is Figure 1 is a structure half-cut side view of a steam boiler device with a compact structure according to the utility model shown in

[0014] Figure 3 is Figure 1 is a top view of a steam boiler device with a compact structure according to the utility model shown in

[0015] LEGEND: 1 - first thermal insulation layer, 2 - second thermal insulation layer, 3 - first side wall, 4 - third thermal insulation layer, 5 - fourth thermal insulation layer, 6 - inner flue, 7 - pouring layer, 8 - fifth thermal insulation layer, 9 - flue, 10 - bottom wheel, 11 - outer flue, 12 - sixth thermal insulation layer, 13 - superheated tube, 14 - top flue, 15 - top wall, 16 - steam drum, 17 - first partition plate, 18 - top cover plate, 19 - side wall cover plate, 20 - seventh thermal insulation layer, 21 - second side wall, 22 - second partition plate, 23 - heat exchanger, 24 - smoke outlet, 25 - third partition plate, 26 - intermediate flue, 27 - fourth partition plate, 28 - burner. DETAILED DESCRIPTION

[0016] The utility model will be described in detail in combination with the drawings and specific embodiments:

[0017] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0018] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the utility model will be further described in detail below in combination with the drawings and examples.It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0019] As Figures 1 to 3 The utility model discloses a compact structure's steam boiler device's structure diagram provided by the utility model embodiment, including burner 28, burner 28 passes through the wall of outer flue 11 and inner flue 6 and is fixed and communicates, and the outer flue 11 is set on the outside of inner flue 6;Waste heat recovery device is separated by the baffle with outer flue 11, and the outer flue 11 communicates with the top of waste heat recovery device through intermediate flue 26;Waste heat recovery device is equipped with heat exchanger 23, and the bottom of waste heat recovery device is equipped with the smoke hole, and the bottom of flue wall of inner flue 6 is equipped with the water inlet, and the water is heated in the flue wall of inner flue 6, and the wall between outer flue 11 and waste heat recovery device is equipped with the heat preservation layer, and the top of inner flue is equipped with superheating tube 13, and the top of inner flue 6 is equipped with the heat preservation layer between superheating tube 13, and intermediate flue 26 is Z-shaped.

[0020] In the utility model embodiment, waste heat recovery device and outer flue are integrally designed, are separated only through baffle, reduce the overall appearance volume of boiler and waste heat recovery device, and the structure is more compact, and the intermediate flue of Z shape can form the bend on the passage of flue gas flow, and then form the low speed area of flue gas flow, make the dust in flue gas can deposit in Z-shaped flue, reduce the dust entering waste heat recovery device, and it is convenient to clean up.

[0021] The heat preservation layer is composed of a steel plate and an aluminum silicate fiber felt attached to the side of the steel plate.

[0022] Preferably, the outer side of the outer flue 11 is provided with a box body, the box body is surrounded by a pair of first side wall 3 and second side wall 21 to form a rectangular barrel shape, the bottom surface of the box body is fixed with a bottom wheel, the top of the box body is fixed with a top wall 15, a top cover plate 18 and a side wall cover plate 19, and the inner flue 6, the outer flue 11, the intermediate flue 26 and the waste heat recovery device are all arranged in the box body.

[0023] Preferably, the inner side of the first side wall 3 is provided with a fourth heat insulation layer 5, which is in the shape of a cylinder, and the fourth heat insulation layer 5 and the flue wall of the inner flue 6 form the outer flue 11.

[0024] Preferably, the outer flue 11 and the wall of the waste heat recovery device are provided with a third heat insulation layer 4 and a sixth heat insulation layer 12, which are used to insulate the heat rising transmission of the inner flue 6, so as to ensure that the heat of the inner flue 6 is more used to heat the water in the flue wall of the inner flue 6.

[0025] Preferably, the bottom of the inner flue 6 and the outer flue 11 is provided with a pouring layer 7, and the bottom of the pouring layer 7 is provided with a fifth heat insulation layer 8, the pouring layer 7 is used to weigh and fix the inner flue 6 and the outer flue 11, and the fifth heat insulation layer 8 is used to keep the heat of the bottom of the inner flue 6 and the outer flue 11 from being lost.

[0026] Preferably, the partition plate includes a first partition plate 17, a second partition plate 22, a third partition plate 25 and a fourth partition plate 27, wherein the second partition plate 22, the third partition plate 25 and the fourth partition plate 27 form the h-shaped bottom of the partition plate.

[0027] Preferably, the first partition plate 17 and the top cover plate 18 and the side wall cover plate 19 are located at the top of the Z-shaped flue, and form the Z-shaped flue with the h-shaped bottom of the partition plate.

[0028] Preferably, the top of the inner flue 6 and the outer flue 11 is provided with a top flue 14, the top of the top flue 14 is provided with a second heat insulation layer 2, the top of the second heat insulation layer 2 is provided with a first heat insulation layer, the first heat insulation layer 1 is in the shape of a semicircle, and wraps the gas collecting chamber 16; and the second heat insulation layer 2 wraps the top collecting pipe of the superheating pipe 13.

[0029] Preferably, the inner side of the second side wall 21 and the inner side of the side wall cover plate 19 are provided with a seventh heat insulation layer 20.

[0030] In specific use, the high-temperature flue gas generated by the burner 28 enters the inner flue 6, then flows downward, passes through the bottom flue 9, enters the outer flue 11 and then flows upward to the top flue 14, then enters the waste heat recovery device from the top of the waste heat recovery device through the Z-shaped middle flue, and then is discharged from the smoke outlet 24 after heat exchange through the heat exchanger 23 and waste heat recovery.

[0031] The foregoing has broadly outlined some aspects and features of various embodiments. These should be construed as merely illustrative of a potential application of the disclosure. Other beneficial results can be attained by applying the disclosed information in a different manner or by combining aspects of the disclosed embodiments. Other aspects and more complete understandings of the application can be attained by referring to the following description and the accompanying drawings in conjunction with the claims.

[0032] The above embodiments have been described in detail. Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or reductions, and replacements made by those skilled in the art within the spirit and scope of the present application also belong to the protection scope of the present application.

Claims

1. A compact steam boiler device, characterized in that, The steam boiler device includes a burner, which is fixed and connected to the wall of the outer flue and the inner flue. The outer flue is fitted outside the inner flue. The waste heat recovery device is separated from the outer flue by a partition. The outer flue is connected to the top of the waste heat recovery device through an intermediate flue. The waste heat recovery device is equipped with a heat exchanger. The bottom of the waste heat recovery device is equipped with a flue outlet. The bottom of the flue wall of the inner flue is equipped with a water inlet. Water is heated in the flue wall of the inner flue. An insulation layer is provided between the walls of the outer flue and the waste heat recovery device. A superheated pipe is provided at the top of the inner flue. An insulation layer is provided between the superheated pipe and the top of the inner flue. The intermediate flue is Z-shaped.

2. The compact steam boiler device according to claim 1, characterized in that, The insulation layer consists of a steel plate and aluminum silicate fiber felt attached to the side of the steel plate.

3. The compact steam boiler device according to claim 2, characterized in that, The outer side of the external flue is provided with a box, which is formed by a pair of first and second side walls forming a rectangular barrel shape. The bottom surface of the box is fixed with bottom wheels, and the top of the box is fixed with a top wall, a top cover plate, and a side wall cover plate. The inner flue, outer flue, intermediate flue, and waste heat recovery device are all located inside the box.

4. The compact steam boiler device according to claim 3, characterized in that, A fourth insulation layer is provided on the inner side of the first sidewall. The fourth insulation layer is cylindrical, and the fourth insulation layer and the flue wall of the inner flue form the outer flue.

5. A compact steam boiler apparatus according to any one of claims 1 to 4, characterized in that, A third insulation layer and a sixth insulation layer are provided between the outer flue and the wall of the waste heat recovery device to isolate the heat transfer from the inner flue, so as to ensure that more of the heat from the inner flue is used to heat the water inside the flue wall.

6. The compact steam boiler device according to claim 5, characterized in that, The bottom of the inner and outer flues is provided with a casting layer, and the bottom of the casting layer is provided with a fifth insulation layer. The casting layer is used to support and fix the inner and outer flues, and the fifth insulation layer is used to prevent heat loss from the bottom of the inner and outer flues.

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