Annular membrane wall of biomass boiler

Abstract

The utility model discloses an annular membrane type wall of a biomass boiler, the annular membrane type wall comprises an inner membrane type wall and an outer membrane type wall surrounding the outer side of the inner membrane type wall, the bottoms of the inner membrane type wall and the outer membrane type wall are both connected and communicated with a lower header, and the tops of the inner membrane type wall and the outer membrane type wall are both connected and communicated with an upper header; the outer membrane type wall is a cylindrical outer wall formed by alternately welding a first wall plate and a first water pipe; the inner mold wall is a cylindrical inner wall formed by alternately welding a second wall plate and a second water pipe; when the cylindrical outer wall and the cylindrical inner wall are communicated with the lower collecting pipe and the upper collecting pipe, the connecting line of the second water pipe and the center of the cylindrical inner wall penetrates through the first wall plate. The burner has the beneficial effects that at least one first water pipe is divided into the first water distribution pipe and the second water distribution pipe through the Y-shaped connector, the installation space for burning is defined by the first water distribution pipe and the second water distribution pipe, and a fixing position and an adjusting space are provided for an adjusting mechanism and a positioning device needed during follow-up burner installation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to membrane type wall technical field especially relates to a annular membrane type wall of biomass boiler. BACKGROUND

[0002] The annular membrane type wall is its cylindrical structure, and the closed structure limits the installation space of the burner, especially large burners (such as cyclone or staged burners) need sufficient air inlet area and flame diffusion space; if the diameter of the furnace is too small, the flame directly washes the membrane type wall, causing local overheating or coking; since the burner needs to be installed on the cylindrical surface of the cylinder, positioning is difficult, and interference exists between the burner and the water pipe in the membrane type wall; the annular layout of the membrane type wall requires the burner nozzle to maintain a reasonable distance from the membrane type wall to avoid flame deflection; if the installation angle or position deviates, it will cause uneven combustion and affect the thermal efficiency.

[0003] Therefore, for the annular membrane type wall structure used in the boiler, there is a problem of difficulty in installing the burner. SUMMARY

[0004] The utility model discloses a purpose of providing a annular membrane type wall of biomass boiler, aiming at solving the technical problem of the annular membrane type wall structure used in the boiler.

[0005] The utility model embodiment is realized in this way:

[0006] A annular membrane type wall of biomass boiler, the annular membrane type wall includes inner membrane type wall and the outer mode wall that surrounds in the inner membrane type wall outside, the inner membrane type wall and the outer membrane type wall are connected and communicate with the lower header in the bottom, the inner membrane type wall and the outer membrane type wall are connected and communicate with the upper header in the top;The outer membrane type wall is alternately welded into the cylindrical outer wall by the first wallboard and the first water pipe;The inner mode wall is alternately welded into the cylindrical inner wall by the second wallboard and the second water pipe;When the cylindrical outer wall and the cylindrical inner wall are communicated with the lower header and the upper header, the connecting line of the second water pipe with the center of the cylindrical inner wall passes through the first wallboard, and the connecting line of the first water pipe with the center of the cylindrical inner wall passes through the second wallboard;At least one first water pipe in the outer membrane type wall has a pair of Y-shaped joints in the upper part, which divides the first water pipe into a first branch pipe and a second branch pipe, and the space surrounded by the first branch pipe and the second branch pipe is the installation space of the burner.

[0007] Further, the two second water pipes on both sides of the second wallboard corresponding to the first water pipe provided with a pair of Y-shaped joints are bent to the two sides to form a third branch pipe and a fourth branch pipe with the same shape as the first branch pipe and the second branch pipe, and the space surrounded by the third branch pipe and the fourth branch pipe is the channel for the combustion flame of the burner or the combusted biomass to enter the membrane type wall heating space.

[0008] Further, the Y-shaped joint is symmetrically distributed with the mounting space of the burner as the center.

[0009] Further, the first and second water pipes are separated at one Y-shaped joint and are gathered at another Y-shaped joint.

[0010] Further, the first and second water pipes form a ring-shaped or circular fixing seat for fixing the required adjustment mechanism and positioning device during subsequent installation of the burner, and the ring-shaped or circular fixing seat is provided with a first baffle with a first through hole at the center, which is sealingly welded with the inner side of the ring-shaped or circular fixing seat.

[0011] Further, the third and fourth water pipes form a ring-shaped or circular support frame, and the support frame is provided with a second baffle with a center corresponding to the first through hole, which is sealingly welded with the inner side of the ring-shaped or circular support frame.

[0012] The positive effect of the utility model is that at least one first water pipe is divided into a first water pipe and a second water pipe through a Y-shaped joint, and the mounting space of the burner is formed by the first and second water pipes, which provides a fixing position and adjustment space for the required adjustment mechanism and positioning device during subsequent installation of the burner, and also solves the interference problem of the burner and the water pipe in the membrane wall, without reducing the number of water pipes in the membrane wall, without affecting the heating capacity of the water in the membrane wall, and without affecting the steam production. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a front view of a ring-shaped membrane wall of a biomass boiler according to the utility model;

[0014] Figure 2 is Figure 1 the B-B sectional view of the ring-shaped membrane wall of the biomass boiler according to the utility model shown in the figure.

[0015] Legend: 1 - first wall plate, 2 - first water pipe, 3 - lower header, 4 - Y-shaped joint, 5 - first water pipe, 6 - first through hole, 7 - upper header, 8 - second wall plate, 9 - second water pipe, 10 - second water pipe, 11 - intermediate wall plate, 12 - third water pipe, 13 - fourth water pipe. DETAILED DESCRIPTION

[0016] The utility model will be described in detail below 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", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relationship shown based on the drawings, which is 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 explicit, the utility model is 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 Figure 1 and Figure 2 shown, it is a structure diagram of an annular membrane type wall of a biomass boiler provided by the utility model embodiment, the annular membrane type wall includes an inner membrane type wall and an outer membrane type wall surrounding the outer side of the inner membrane type wall, the inner membrane type wall and the outer membrane type wall are connected and communicated with a lower header 3 at the bottom, and the inner membrane type wall and the outer membrane type wall are connected and communicated with an upper header 7 at the top; the outer membrane type wall is a cylindrical outer wall alternately welded by first wall plates 1 and first water pipes 2; the inner membrane type wall is a cylindrical inner wall alternately welded by second wall plates 8 and second water pipes 9; when the cylindrical outer wall and the cylindrical inner wall are communicated with the lower header 3 and the upper header 7, the connecting line of the second water pipe 9 with the center of the cylindrical inner wall passes through the first wall plate 1, and the connecting line of the first water pipe 2 with the center of the cylindrical inner wall passes through the second wall plate 8; at least the upper middle part of one first water pipe 2 in the outer membrane type wall is provided with a pair of Y-shaped joints 4 to divide the first water pipe 2 into a first branch water pipe 5 and a second branch water pipe 10, and the space surrounded by the first branch water pipe 5 and the second branch water pipe 10 is the installation space of the burner; the two second water pipes 9 on both sides of the second wall plate 8 corresponding to the first water pipe provided with the pair of Y-shaped joints 4 are bent to the two sides to form a third branch water pipe 12 and a fourth branch water pipe 13 with the same shape as the first branch water pipe 5 and the second branch water pipe 10, and the space surrounded by the third branch water pipe 12 and the fourth branch water pipe 13 is the passage of the combustion flame of the burner or the combustion biomass entering the membrane type wall heating space.

[0020] In the embodiment of the utility model, at least one first water pipe 2 is divided into a first branch water pipe 5 and a second branch water pipe 10 through a Y-shaped joint 4, and the installation space of combustion is surrounded by the first branch water pipe 5 and the second branch water pipe 10, so that the fixed position and adjustment space for the adjustment mechanism and the positioning device required during the subsequent installation of the burner are provided, and meanwhile, the interference problem of the burner and the membrane wall middle water pipe is solved, and the number of the membrane wall middle water pipe is not reduced, so that the heating capacity of the membrane wall middle water and the steam production are not affected.

[0021] Specifically, as shown in Figure 1 and Figure 2 An annular membrane wall of a biomass boiler, the annular membrane wall comprising an inner membrane wall and an outer membrane wall surrounding the outer side of the inner membrane wall, the inner membrane wall and the outer membrane wall are connected and communicated with a lower header 3 at the bottom, and the inner membrane wall and the outer membrane wall are connected and communicated with an upper header 7 at the top; the outer membrane wall is a cylindrical outer wall alternately welded by first wall plates 1 and first water pipes 2; the inner membrane wall is a cylindrical inner wall alternately welded by second wall plates 8 and second water pipes 9; when the cylindrical outer wall and the cylindrical inner wall are communicated with the lower header 3 and the upper header 7, the line connecting the second water pipe 9 with the center of the cylindrical inner wall passes through the first wall plate 1, and the line connecting the first water pipe 2 with the center of the cylindrical inner wall passes through the second wall plate 8; at least one first water pipe 2 in the outer membrane wall is provided with a pair of Y-shaped joints 4 to divide the first water pipe 2 into a first branch water pipe 5 and a second branch water pipe 10, and the space surrounded by the first branch water pipe 5 and the second branch water pipe 10 is the installation space of the burner; the Y-shaped joints 4 are symmetrically distributed with the installation space of the burner as the center, the first branch water pipe 5 and the second branch water pipe 10 are separated at one Y-shaped joint 4 and are gathered at another Y-shaped joint 4; the first branch water pipe 5 and the second branch water pipe 10 surround an annular or circular fixing seat, and the fixing seat is used for fixing the adjustment mechanism and the positioning device required during the subsequent installation of the burner; the annular or circular fixing seat is provided with a first baffle with a first through hole at the center, and the first baffle is sealingly welded with the inner side of the annular or circular fixing seat.

[0022] The two second water pipes 9 on both sides of the second wall plate 8 corresponding to the first water pipe provided with a pair of Y-shaped joints 4 are bent to the two sides to form third branch water pipes 12 and fourth branch water pipes 13 with the same shape as the first branch water pipe 5 and the second branch water pipe 10, and the space surrounded by the third branch water pipe 12 and the fourth branch water pipe 13 is the channel for the combustion flame of the burner or the combusted biomass to enter the membrane wall heating space; the third branch water pipe 12 and the fourth branch water pipe 13 surround an annular or circular support frame, and the support frame is provided with a second baffle with a center corresponding to the first through hole, and the baffle is sealingly welded with the inner side of the annular or circular fixing seat.

[0023] The foregoing has outlined some aspects and features of various embodiments, which should be construed as being illustrative only. 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 a more comprehensive understanding can be obtained by referring to the detailed description of the exemplary embodiments in connection with the accompanying drawings.

[0024] The above embodiments have made a detailed description of the present application. 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 related technical personnel within the essential scope of the present application also belong to the protection scope of the present application.

Claims

1. An annular membrane wall for a biomass boiler, characterized in that, The annular membrane wall includes an inner membrane wall and an outer membrane wall surrounding the outer side of the inner membrane wall. Both the inner and outer membrane walls are connected to and communicate with the lower manifold at the bottom, and both are connected to and communicate with the upper manifold at the top. The outer membrane wall is formed into a cylindrical outer wall by alternating welding of a first wall plate and a first water pipe. The inner membrane wall is formed into a cylindrical inner wall by alternating welding of a second wall plate and a second water pipe. When the cylindrical outer wall and the cylindrical inner wall are connected to the lower and upper manifolds, the line connecting the second water pipe to the center of the cylindrical inner wall passes through the first wall plate, and the line connecting the first water pipe to the center of the cylindrical inner wall passes through the second wall plate. At least one of the first water pipes in the outer membrane wall has a pair of Y-shaped joints in its upper middle part to divide the first water pipe into a first branch water pipe and a second branch water pipe. The space surrounding the first and second branch water pipes is the installation space for the burner.

2. The annular membrane wall of a biomass boiler according to claim 1, characterized in that, The two second water pipes on both sides of the second wall panel corresponding to the first water pipe with a pair of Y-shaped joints bend to both sides to form the third and fourth water pipes with the same shape as the first and second water pipes. The space surrounded by the third and fourth water pipes is the channel for the combustion flame of the burner or the burning biomass to enter the membrane wall heating space.

3. The annular membrane wall of a biomass boiler according to claim 2, characterized in that, The Y-shaped connectors are symmetrically distributed with the burner's installation space as the center.

4. The annular membrane wall of a biomass boiler according to claim 3, characterized in that, The first and second branch pipes separate at one Y-shaped joint and converge at another Y-shaped joint.

5. The annular membrane wall of a biomass boiler according to any one of claims 2 to 4, characterized in that, The first water distribution pipe and the second water distribution pipe form an annular or circular fixing seat. The fixing seat is used to fix the adjustment mechanism and positioning device required during the subsequent installation of the burner. The annular or circular fixing seat is provided with a first baffle with a first through hole in the center. The first baffle is sealed and welded to the inner side of the annular or circular fixing seat.

6. The annular membrane wall of a biomass boiler according to claim 5, characterized in that, The third and fourth water distribution pipes form an annular or circular support frame. A second baffle, whose center corresponds to the first through hole, is provided inside the support frame. The baffle is sealed and welded to the inner side of the annular or circular fixed seat. The second baffle is sealed and welded to the inner side of the annular or circular support frame.

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