CN210123062U - Non-metal expansion joint for connecting lower header and slag well of power plant boiler - Google Patents
Non-metal expansion joint for connecting lower header and slag well of power plant boiler Download PDFInfo
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- CN210123062U CN210123062U CN201920143590.1U CN201920143590U CN210123062U CN 210123062 U CN210123062 U CN 210123062U CN 201920143590 U CN201920143590 U CN 201920143590U CN 210123062 U CN210123062 U CN 210123062U
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Abstract
The utility model discloses a power boiler is header and sediment well down are connected and are used nonmetal expansion joint, include: the heat insulation structure comprises a lower flange, a flexible ring belt, a heat insulation layer, a T-shaped upper connecting pipe, a first bolt assembly, a second bolt assembly, a first fastening assembly and a second fastening assembly; the T-shaped upper connecting pipe is connected with a lower header comb-shaped plate of the power plant boiler; the lower flange is connected with a slag well upper opening platform of the power plant boiler; one end of the heat insulation layer is connected with the T-shaped upper connecting pipe through a first bolt assembly, and the other end of the heat insulation layer is connected with the upper opening platform of the slag well through a second bolt assembly; one end of the flexible ring belt is connected with the T-shaped upper connecting pipe through a first fastening component, and the other end of the flexible ring belt is connected with the lower flange through a second fastening component. The utility model provides an expansion joint installation maintain the problem that exists in-process, on the basis that guarantees that the expansion joint satisfies original service function, make things convenient for on-the-spot construction.
Description
Technical Field
The utility model relates to a conveying line technical field especially relates to a power boiler is header and sediment well down and is connected and use nonmetal expansion joint.
Background
Expansion joints are common elements of pipe connections. According to the knowledge, the lower header and the slag well of the existing power plant boiler have high temperature, large expansion and contraction and large axial displacement (vertical downward) caused by boiler settlement, and are usually connected by adopting a 'return' shaped expansion joint, and the displacement compensation between the lower header and the slag well of the boiler is realized through the flexibility of a flexible ring belt and a heat insulation layer.
At present, the traditional expansion joint in the shape of a Chinese character hui is large in size, and is usually transported in a split mode and installed on site. During installation, construction must be carried out from the inside of the hearth, in addition, the flexible ring belt and the heat insulation layer are made of non-metal materials, the service life of the flexible ring belt is far shorter than that of a steel structural member, and later maintenance and replacement must also be carried out from the inside of the hearth.
However, because the inner space of the hearth is limited, and the space between the upper connecting pipe of the expansion joint and the slag blocking net inside the boiler is narrow (smaller than 300mm), the problem of inconvenient construction exists, and when the later maintenance is changed, ash in the slag well is accumulated, the working environment is severe, and the construction difficulty is further increased.
SUMMERY OF THE UTILITY MODEL
The technical problem of the utility model is solved: overcome prior art's not enough, provide a power boiler under header and slag shaft and be connected and use nonmetal expansion joint, aim at solving the problem that exists in the expansion joint installation maintenance process, on the basis of guaranteeing that the expansion joint satisfies original service function, make things convenient for on-the-spot construction.
In order to solve the technical problem, the utility model discloses a power boiler is header and sediment well down are connected and are used nonmetal expansion joint, include: the heat insulation structure comprises a lower flange, a flexible ring belt, a heat insulation layer, a T-shaped upper connecting pipe, a first bolt assembly, a second bolt assembly, a first fastening assembly and a second fastening assembly;
the T-shaped upper connecting pipe is connected with a lower header comb-shaped plate of the power plant boiler;
the lower flange is connected with a slag well upper opening platform of the power plant boiler;
one end of the heat insulation layer is connected with the T-shaped upper connecting pipe through a first bolt assembly, and the other end of the heat insulation layer is connected with the upper opening platform of the slag well through a second bolt assembly;
one end of the flexible ring belt is connected with the T-shaped upper connecting pipe through a first fastening component, and the other end of the flexible ring belt is connected with the lower flange through a second fastening component.
In the header is connected with the slag well under above-mentioned power boiler and uses nonmetal expansion joint, first bolt assembly includes: the first clamping screw bolt, the first clamping nut and the first pressing plate;
the bottom of the first fastening stud is welded on the vertical surface of the T-shaped upper connecting pipe;
the end part of the first fastening stud penetrates through the heat insulation layer and the first pressure plate in sequence and then is fixed through a first fastening nut.
In the header is connected with the slag well under above-mentioned power boiler and uses nonmetal expansion joint, second fastening components includes: the second fastening stud, the second fastening nut and the second pressing plate;
the end part of the second fastening stud sequentially passes through the second pressing plate and the flexible ring belt and then passes through the second fastening nut.
In the non-metallic expansion joint for connecting header and slag well under above-mentioned power boiler, the insulating layer includes: heat insulation cotton, ceramic fiber cloth and a stainless steel wire mesh;
the ceramic fiber cloth is coated outside the heat insulation cotton;
the stainless steel wire net is coated outside the ceramic fiber cloth.
In the header is connected with the slag well and is used nonmetal expansion joint under above-mentioned power boiler, flexible circle area includes: the edge cover, the sealing layer, the flexible ring belt heat insulation layer and the tensile layer are arranged on the outer side of the flexible ring belt;
the sealing layer, the tensile layer and the flexible ring belt heat insulation layer are sequentially stacked to form a composite layer;
the wrapping edges are wrapped on two end faces of the composite layer.
In the nonmetal expansion joint for connecting the lower header and the slag well of the power plant boiler, the sealing layer, the flexible ring belt heat insulation layer and the tensile layer are all one or more layers.
In the nonmetal expansion joint for connecting the lower header and the slag well of the power plant boiler, the radian of the bottom surface of the installed heat insulation layer is larger than 500 mm.
In the header is connected with the slag well and is used nonmetal expansion joint under above-mentioned power boiler, take over on the T type, include: vertical and horizontal planes welded vertically;
the vertical distance between the bottommost end of the vertical surface and the horizontal surface is as follows: 80-100 mm.
In the nonmetal expansion joint for connecting the lower header and the slag well of the power plant boiler, the inner diameter of the lower flange is larger than that of the slag well of the power plant boiler.
In the non-metallic expansion joint for connecting the lower header and the slag well of the power plant boiler, the circumferential difference value of the inner diameter of the lower flange and the inner diameter of the slag well of the power plant boiler is as follows: 160-200 mm.
The utility model has the advantages of it is following:
the utility model discloses a power boiler is header and sediment well down are connected and are used nonmetal expansion joint has adopted brand-new structural configuration, chooseed for use on the T type and taken over and heavy-calibre lower flange, it is fixed to take over and carry out the connection of flexible circle area and insulating layer with the heavy-calibre lower flange on through the T type, still kept big end down's "back" style of calligraphy structure, solved the problem that exists in the expansion joint installation maintenance process, on guaranteeing that the expansion joint satisfies original service function's basis, make things convenient for on-the-spot construction.
Drawings
FIG. 1 is a schematic structural view of a non-metallic expansion joint for connecting a lower header and a slag well of a power plant boiler in the utility model;
fig. 2 is a schematic structural diagram of a bolt assembly according to the present invention;
fig. 3 is a schematic structural view of a fastening assembly of the present invention;
fig. 4 is a schematic structural diagram of a thermal insulation layer in the present invention;
fig. 5 is a schematic structural diagram of a flexible loop of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in FIGS. 1-5, in this embodiment, this power boiler is lower header and slag well and is connected with nonmetal expansion joint includes: the heat insulation structure comprises a lower flange 1, a flexible ring belt 2, a heat insulation layer 3, a T-shaped upper connecting pipe 4, a first bolt assembly 5, a second bolt assembly 6, a first fastening assembly 7 and a second fastening assembly 8.
As shown in fig. 1, a T-shaped upper connecting pipe 4 is connected with a lower header comb-shaped plate 9 of a power plant boiler; the lower flange 1 is connected with a slag well upper opening platform 10 of a power plant boiler; one end of the heat insulation layer 3 is connected with the T-shaped upper connecting pipe 4 through a first bolt component 5, and the other end of the heat insulation layer is connected with the slag well upper opening platform 10 through a second bolt component 6; one end of the flexible ring belt 2 is connected with the T-shaped upper connecting pipe 4 through a first fastening component 7, and the other end of the flexible ring belt is connected with the lower flange 1 through a second fastening component 8.
As shown in fig. 2, the first bolt assembly 5 includes: a first fastening stud 51, a first fastening nut 52 and a first pressure plate 53. Wherein, the bottom of the first fastening stud 51 is welded on the vertical surface 41 of the T-shaped upper connecting pipe 4; the end of the first fastening stud 51 is fixed by the first fastening nut 52 after passing through the insulation 3 and the first press plate 53 in sequence.
As shown in fig. 3, the second fastening assembly 8 includes: a second fastening stud 81, a second fastening nut 82 and a second pressure plate 83. Wherein, the end of the second fastening screw 81 passes through the second pressing plate 83 and the flexible ring belt 2 in sequence and then passes through the second fastening nut 82.
It should be noted that the second bolt assembly 6 has a similar structure to the first bolt assembly 5, and the first fastening assembly 7 has a similar structure to the second fastening assembly 8, which are not repeated herein.
As shown in fig. 4, the thermal insulation layer 3 includes: heat insulation cotton 31, ceramic fiber cloth 32 and stainless steel mesh 33. Wherein, the ceramic fiber cloth 32 is coated outside the heat insulation cotton 31; the stainless steel wire mesh 33 is wrapped outside the ceramic fiber cloth 32.
As shown in fig. 5, the flexible loop tape 2 includes: the edge cover 21, the sealing layer 22, the flexible ring belt heat insulation layer 23 and the tensile layer 24. Wherein, the sealing layer 22, the tensile layer 24 and the flexible ring belt heat insulation layer 23 are sequentially stacked to form a composite layer; the edge cover 21 covers two end faces of the composite layer.
Preferably, sealing layer 22, flexible loop insulation layer 23 and tensile layer 24 are all one or more layers.
In this embodiment, the radian R of the bottom surface of the insulating layer 3 after installation is greater than 500 mm.
In this embodiment, the T-shaped upper adapter 4 includes: vertical face 41 and horizontal face 42 are welded perpendicularly. Wherein, the vertical distance between the bottommost end of the vertical surface 41 and the horizontal surface 42 is: 80-100 mm.
In this embodiment, the inner diameter of the lower flange 1 is larger than the inner diameter of the slag well of the power plant boiler.
Preferably, the circumferential difference value between the inner diameter of the lower flange 1 and the inner diameter of a slag well of a power plant boiler is as follows: 160-200 mm.
In this embodiment, during installation, the T-shaped upper connecting pipe and the lower flange are respectively fixed with the lower header comb-shaped plate of the power plant boiler and the upper opening platform of the slag well. Then, the installation of the heat insulation layer is carried out: one end of the heat insulation layer is connected with the T-shaped upper connecting pipe through a first bolt assembly, and the other end of the heat insulation layer is connected with the upper opening platform of the slag well through a second bolt assembly; after the installation is finished, the radian formed by the heat insulation layer is preferably larger than R500 mm. And finally, mounting the flexible ring belt. The flexible ring belt and the heat insulation layer are maintained and replaced in the later period, and the operation can be carried out outside the slag well without entering the hearth for internal construction.
The above description is only for the best embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention.
The details of the present invention not described in detail in the specification are well known to those skilled in the art.
Claims (10)
1. The utility model provides a power boiler is header and slag shaft down are connected and are used nonmetal expansion joint which characterized in that includes: the heat insulation structure comprises a lower flange (1), a flexible ring belt (2), a heat insulation layer (3), a T-shaped upper connecting pipe (4), a first bolt assembly (5), a second bolt assembly (6), a first fastening assembly (7) and a second fastening assembly (8);
the T-shaped upper connecting pipe (4) is connected with a lower header comb-shaped plate (9) of the power plant boiler;
the lower flange (1) is connected with an upper opening platform (10) of a slag well of a power plant boiler;
one end of the heat insulation layer (3) is connected with the T-shaped upper connecting pipe (4) through a first bolt component (5), and the other end of the heat insulation layer is connected with the slag well upper opening platform (10) through a second bolt component (6);
one end of the flexible ring belt (2) is connected with the T-shaped upper connecting pipe (4) through a first fastening component (7), and the other end of the flexible ring belt is connected with the lower flange (1) through a second fastening component (8).
2. The power plant boiler lower header and slag well connecting nonmetal expansion joint according to claim 1, wherein the first bolt assembly (5) comprises: a first fastening stud (51), a first fastening nut (52) and a first pressure plate (53);
the bottom of the first fastening stud (51) is welded on the vertical surface (41) of the T-shaped upper connecting pipe (4);
the end part of the first fastening stud (51) penetrates through the heat insulation layer (3) and the first pressure plate (53) in sequence and then is fixed through the first fastening nut (52).
3. The power plant boiler lower header and slag well connecting nonmetal expansion joint according to claim 1, characterized in that the second fastening component (8) comprises: a second fastening stud (81), a second fastening nut (82) and a second pressure plate (83);
the end part of the second fastening stud (81) passes through the second pressure plate (83) and the flexible ring belt (2) in sequence and then passes through the second fastening nut (82).
4. The power plant boiler lower header and slag well connecting nonmetal expansion joint according to claim 1, characterized in that the heat insulation layer (3) comprises: heat insulation cotton (31), ceramic fiber cloth (32) and a stainless steel wire mesh (33);
the ceramic fiber cloth (32) is coated outside the heat insulation cotton (31);
the stainless steel screen (33) is coated outside the ceramic fiber cloth (32).
5. The power plant boiler lower header and slag well connecting nonmetal expansion joint according to claim 1, wherein the flexible ring belt (2) comprises: the edge cover (21), the sealing layer (22), the flexible ring belt heat insulation layer (23) and the tensile layer (24);
the sealing layer (22), the tensile layer (24) and the flexible ring belt heat insulation layer (23) are sequentially stacked to form a composite layer;
the edge covers (21) are coated on two end faces of the composite layer.
6. The non-metallic expansion joint for connecting the lower header and the slag well of the power plant boiler according to claim 5, wherein the sealing layer (22), the flexible ring belt heat insulation layer (23) and the tensile layer (24) are all one or more layers.
7. The non-metallic expansion joint for connecting the lower header and the slag well of the power plant boiler according to claim 1, wherein the radian of the bottom surface of the heat insulation layer (3) after installation is larger than 500 mm.
8. The power plant boiler lower header and slag well connecting nonmetal expansion joint according to any one of claims 1 to 7, wherein the T-shaped upper connecting pipe (4) comprises: a vertical surface (41) and a horizontal surface (42) which are vertically welded;
the vertical distance between the bottommost end of the vertical surface (41) and the horizontal surface (42) is as follows: 80-100 mm.
9. The non-metallic expansion joint for connecting the lower header and the slag well of the power plant boiler according to any one of claims 1 to 7, wherein the inner diameter of the lower flange (1) is larger than that of the slag well of the power plant boiler.
10. The power plant boiler lower header and slag well connecting nonmetal expansion joint according to claim 9, wherein the circumferential difference between the inner diameter of the lower flange (1) and the inner diameter of the slag well of the power plant boiler is as follows: 160-200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143590.1U CN210123062U (en) | 2019-01-28 | 2019-01-28 | Non-metal expansion joint for connecting lower header and slag well of power plant boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143590.1U CN210123062U (en) | 2019-01-28 | 2019-01-28 | Non-metal expansion joint for connecting lower header and slag well of power plant boiler |
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| Publication Number | Publication Date |
|---|---|
| CN210123062U true CN210123062U (en) | 2020-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920143590.1U Active CN210123062U (en) | 2019-01-28 | 2019-01-28 | Non-metal expansion joint for connecting lower header and slag well of power plant boiler |
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| Country | Link |
|---|---|
| CN (1) | CN210123062U (en) |
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- 2019-01-28 CN CN201920143590.1U patent/CN210123062U/en active Active
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