CN215671431U - Double-wall glass fibre reinforced plastic smoke exhaust tube - Google Patents
Double-wall glass fibre reinforced plastic smoke exhaust tube Download PDFInfo
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- CN215671431U CN215671431U CN202120982853.5U CN202120982853U CN215671431U CN 215671431 U CN215671431 U CN 215671431U CN 202120982853 U CN202120982853 U CN 202120982853U CN 215671431 U CN215671431 U CN 215671431U
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Abstract
The utility model relates to a double-wall glass fiber reinforced plastic smoke exhaust tube, and belongs to the technical field of chimney design and construction. The smoke exhaust tube is provided with a double-layer tube wall, the double-layer tube wall comprises an inner wall and an outer wall, and a connecting web plate is arranged between the inner wall and the outer wall; a cavity is arranged among the inner wall, the outer wall and the connecting web plate; the periphery of the outer wall of the double-layer cylinder wall is provided with an annular stiffening rib. The double-cylinder wall and the connecting web plate increase the bending rigidity of the cylinder wall and the critical stress level of the cylinder body, improve the stability and the whole bearing capacity of the cylinder wall, save the cylinder body material and improve the thermal insulation performance of the cylinder body. The arrangement of the rigid diaphragm stiffening rib enables the stiffening rib to have comprehensive functions of stiffening, shell ring connection, shell ring hoisting, shaking prevention and the like. The utility model provides a safe, reliable, economic and applicable technical scheme for chimney corrosion prevention for the application of the glass fiber reinforced plastic chimney, reduces the material strength margin of the chimney wall of the glass fiber reinforced plastic chimney, improves the yield resistance of the glass fiber reinforced plastic chimney, reduces the material consumption and saves the construction cost.
Description
Technical Field
The utility model relates to a double-wall glass fiber reinforced plastic smoke exhaust tube, and belongs to the technical field of chimney design and construction.
Background
The glass fiber reinforced plastic is a composite material compounded by fiber and resin, has the advantages of light weight, corrosion resistance, strong designability and the like, is particularly suitable for wet chimneys discharging wet flue gas, and is widely used for chimney anticorrosion engineering. The tensile strength of the formed glass fiber reinforced plastic structure is equivalent to that of common steel, the volume weight of the formed glass fiber reinforced plastic structure is about 1/4 of the steel, and the elastic modulus of the formed glass fiber reinforced plastic structure is about 1/10 of the steel. Therefore, light weight and corrosion resistance are advantages of the glass fiber reinforced plastic structure, and low elastic modulus is a disadvantage thereof. The bearing capacity of the smoke exhaust tube as a cylindrical shell structure is mainly controlled by critical stress, namely whether the smoke exhaust tube is in elastic-plastic or elastic buckling instability, but not by material strength. The axial and hoop critical stresses for controlling the buckling of the cylindrical shell structure are in direct proportion to the product of the corresponding bending modulus and compression modulus, so that the axial critical stress and the hoop critical stress of the cylinder wall of the glass fiber reinforced plastic exhaust cylinder of the cylindrical shell structure are greatly reduced due to low elastic modulus of the glass fiber reinforced plastic, and the defect of the glass fiber reinforced plastic exhaust cylinder is overcome by the requirement of larger cylinder wall thickness. The larger thickness of the cylinder wall improves the critical stress of the cylinder wall and meets the bearing capacity requirement of the cylinder wall controlled by yield. But the larger cylinder wall thickness leads to larger margin of the section compressive strength of the material, thereby causing lower utilization rate of the material strength and improving the construction cost and the cost. Therefore, the problems of low material strength utilization rate, high engineering cost and the like of the common glass fiber reinforced plastic chimney exist in the prior art, the technical field needs to solve the problem of balancing the material strength margin and the yield capacity of the glass fiber reinforced plastic chimney wall, reduce the material consumption and save the engineering cost.
Disclosure of Invention
The utility model aims to solve the technical problems of low strength utilization rate and high engineering cost of common glass fiber reinforced plastic smoke exhaust tube materials.
In order to solve the problems, the technical scheme adopted by the utility model is to provide a double-wall glass fiber reinforced plastic exhaust pipe, wherein the exhaust pipe is provided with a double-layer pipe wall, the double-layer pipe wall comprises an inner wall and an outer wall, and a connecting web plate is arranged between the inner wall and the outer wall; a first cavity is arranged among the inner wall, the outer wall and the connecting web plate; the periphery of the outer wall of the double-layer cylinder wall is provided with an annular stiffening rib.
Preferably, two ends of the smoke exhaust cylinder are provided with connecting structures, and the connecting structures comprise socket type connection or flange bolt connection; or the smoke exhaust tube is of an integrated integral structure without seams.
Preferably, two ends of the smoke exhaust tube are respectively provided with a socket and a socket; the socket and spigot are provided in solid belly form.
Preferably, the inner wall and the outer wall are arranged in a concentric circle structure, and the inner wall and the outer wall are connected into a whole through a connecting web.
Preferably, the length direction of the connecting web is parallel to the central axis of the smoke exhaust pipe, and the width direction of the connecting web is along the radial direction of the smoke exhaust pipe.
Preferably, the inner side of the inner wall is provided with a permeation-resistant anticorrosive layer, and the outer side of the outer wall is provided with a protective layer.
Preferably, the stiffening rib is a hollow structure, and a rigid transverse partition is arranged inside the stiffening rib; a second cavity is arranged between the rigid transverse partitions; the bolt holes are formed in the rigid transverse partitions, and bolts used for connecting adjacent stiffening ribs are arranged in the bolt holes.
Preferably, the central axis of the bolt hole is parallel to the central axis of the smoke exhaust tube.
Preferably, when the connecting structure is flange connection, a flexible anti-corrosion and anti-permeability sealing ring is arranged between the flanges.
The utility model provides a single-wall type glass fiber reinforced plastic exhaust funnel, wherein an annular stiffening rib is arranged on the outer periphery of the outer side of the wall of the exhaust funnel, the stiffening rib is of a hollow structure, and a rigid transverse partition is arranged inside the stiffening rib; a cavity is arranged between the rigid transverse partitions; the rigid transverse partition is provided with bolt holes, and bolts for connecting adjacent stiffening ribs are arranged in the bolt holes; the central axis of the bolt hole is parallel to the central axis of the smoke exhaust tube.
Compared with the prior art, the utility model has the following beneficial effects:
compared with the single-cylinder wall type glass fiber reinforced plastic smoke exhaust cylinder, the double-cylinder wall and the connecting web plate jointly act to increase the bending rigidity of the cylinder wall and the critical stress level of the cylinder body, improve the stability and the integral bearing capacity of the cylinder wall, save the material of the cylinder body and improve the heat insulation performance of the cylinder body. The double-wall glass fiber reinforced plastic smoke exhaust tube structure provides a stiffening rib with a rigid diaphragm, and the rigid diaphragm changes the single stiffening function of the common stiffening rib, so that the stiffening rib has the comprehensive functions of tube section connection, tube section hoisting, shaking prevention and the like besides the stiffening function. The utility model provides a safe, reliable, economic and applicable chimney corrosion prevention technical scheme for the application of the glass fiber reinforced plastic chimney, greatly reduces the material strength margin of the chimney wall of the glass fiber reinforced plastic chimney, improves the yield resistance of the glass fiber reinforced plastic chimney, reduces the material consumption and saves the engineering cost.
Drawings
FIG. 1 is a schematic elevation view of a single cylindrical section when a double-walled glass fiber reinforced plastic chimney is connected in a socket manner;
FIG. 2 is an assembly view of a double-walled glass fiber reinforced plastic chimney according to the present invention in a socket type connection;
FIG. 3 is a cross-sectional view A-A of FIG. 1, with a cross-sectional view of a stiffener;
FIG. 4 is a sectional view B-B of FIG. 1, which is a standard cross-sectional view of a double-walled chimney;
FIG. 5 is a cross-sectional view taken at C-C of FIG. 3, showing a longitudinal cross-sectional view of the shell section at the rigid rail locations of the stiffeners;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 3, showing a longitudinal cross-sectional view of the shell section at the location of the cavity of the stiffener;
FIG. 7 is a cross-sectional view of a standard single-wall glass fiber reinforced plastic cylinder;
FIG. 8 is a cross-sectional view of a single-walled glass fiber reinforced plastic cylinder with rigid, cross-spaced stiffeners at the stiffeners;
FIG. 9 is a longitudinal cross-sectional view of a single-walled glass fiber reinforced plastic cylinder with stiffening ribs having rigid partitions at the rigid partitions;
FIG. 10 is a longitudinal cross-sectional view of a single-walled glass fiber reinforced plastic cylinder with stiffening ribs having rigid cross-sections at the cavity.
Reference numerals: 1. a socket; 2. a socket; 3. a barrel body; 4. a stiffening rib; 301. an outer wall; 302. an inner wall; 303. connecting the webs; 304. a first cavity; 401. a stiffener body; 402. a rigid diaphragm; 403. bolt holes; 404. a second cavity; 405. a long bolt.
Detailed Description
In order to make the utility model more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1-10, the utility model provides a double-wall type glass fiber reinforced plastic smoke exhaust pipe, which is provided with a double-layer pipe wall, wherein the double-layer pipe wall comprises an inner wall 302 and an outer wall 301, and a connecting web 303 is arranged between the inner wall 302 and the outer wall 301; a first cavity 304 is arranged among the inner wall 302, the outer wall 301 and the connecting web 303; the outer circumference barrel body 3 of the double-layer barrel wall outer wall 301 is provided with an annular stiffening rib 4. The two ends of the smoke exhaust cylinder are provided with connecting structures, and the connecting structures comprise socket type connection or flange bolt connection; or the smoke exhaust tube is of an integrated integral structure without seams. The two ends of the smoke exhaust tube are respectively provided with a socket 1 and a socket 2; the socket 2 and the spigot 1 are provided in solid belly form. The inner wall 302 and the outer wall 301 are arranged in a concentric circle structure, and the inner wall 302 and the outer wall 301 are connected into a whole through a connecting web 303. The length direction of the connecting web 303 is parallel to the central axis of the smoke exhaust pipe, and the width direction of the connecting web 303 is along the radial direction of the smoke exhaust pipe. The inner side of the inner wall 302 is provided with a impervious anticorrosive layer, and the outer side of the outer wall 301 is provided with a protective layer. The stiffening rib body 401 is a hollow structure, and a rigid transverse partition 402 is arranged inside the stiffening rib 4; a second cavity 404 is arranged between the rigid transverse partitions 402; the rigid crosspiece 402 is provided with bolt holes 403, and the bolt holes 403 are provided with long bolts 405 for connecting adjacent stiffeners 4. The central axis of the bolt hole 403 is parallel to the central axis of the smoke exhaust pipe. When the connecting structure is arranged in a flange connection mode, a flexible anti-corrosion anti-permeability sealing ring is arranged between the flanges.
The utility model also provides a single-wall type glass fiber reinforced plastic exhaust funnel, wherein the periphery of the outer side of the wall of the exhaust funnel is provided with an annular stiffening rib, a stiffening rib body 401 is of a hollow structure, and a rigid transverse partition 402 is arranged inside the stiffening rib; cavities 404 are arranged between the rigid transverse partitions 402; a bolt hole 403 is formed in the rigid transverse partition 402, and a bolt for connecting adjacent stiffening ribs is arranged in the bolt hole 403; the central axis of the bolt hole 403 is parallel to the central axis of the smoke exhaust pipe.
As shown in FIGS. 1-10, the utility model provides a double-wall type glass fiber reinforced plastic smoke exhaust pipe structure, which comprises a double-wall type smoke exhaust pipe socket 1, a double-wall type smoke exhaust pipe socket 2, a double-wall type smoke exhaust pipe body 3, a double-wall type smoke exhaust pipe 'rigid transverse partition' stiffening rib 4, a double-wall type smoke exhaust pipe outer wall 301, a double-wall type smoke exhaust pipe inner wall 302, a double-wall type smoke exhaust pipe inner and outer wall connecting web plate 303, a double-wall type smoke exhaust pipe cavity I304, a 'rigid transverse partition' stiffening rib main body 401, a 'rigid transverse partition' of the 'rigid transverse partition' stiffening rib 402, a 'rigid transverse partition' upper bolt hole 403, a 'rigid transverse partition' stiffening rib cavity II 404 and a long bolt 405 for connecting an upper glass fiber reinforced plastic pipe section and a lower glass fiber reinforced plastic pipe section. The double-wall glass fiber reinforced plastic smoke exhaust tube structure greatly balances the problems of strength margin and yield capacity of the tube wall of the glass fiber reinforced plastic chimney, reduces the material consumption and saves the construction cost. The double-wall glass fiber reinforced plastic smoke exhaust tube structure is characterized in that the tube wall of the smoke exhaust tube is of a double-layer structure and consists of an inner wall 302 and an outer wall 301, the inner wall and the outer wall are connected into a whole through a plurality of connecting webs 303, a plurality of continuous hollow tube walls with I-shaped solid sections and cavity sections alternately combined are formed, the equivalent thickness of the tube wall is improved, the material consumption is reduced, the bearing capacity equivalent to that of the solid tube wall is obtained, and good economic benefits are obtained.
The double-wall glass fiber reinforced plastic smoke exhaust tube structure is characterized in that the tube wall is an empty-web annular section, the annular section is composed of an inner wall 302 and an outer wall 301 which are concentric circles, the inner wall 302 and the outer wall 301 are connected into a whole through a plurality of connecting webs 303, the webs 303 are axially arranged, the long axis direction of the webs 303 is axially parallel to the tube wall, and the short axis direction of the webs 303 is radially and radially arranged along the annular section.
The double-wall glass fiber reinforced plastic smoke exhaust tube structure is characterized in that the inner side of an inner wall 302 is an impervious anticorrosive layer, the outer side of the inner wall 302, a web 303 and an outer wall 301 are structural layers, and the outer side of the outer wall 301 is provided with a protective layer.
The double-wall glass fiber reinforced plastic smoke exhaust tube structure can be formed by sequentially connecting a plurality of sections of double-wall glass fiber reinforced plastic tube sections formed by mechanical winding, and can also be integrally formed at one time.
The double-wall glass fiber reinforced plastic smoke exhaust tube structure has the advantages that each tube section can adopt socket joint type connection or flange connection.
When the cylinder sections of the double-wall glass fiber reinforced plastic smoke exhaust cylinder structure are connected in a socket and spigot manner, the bellmouth 2 and the spigot 1 can adopt a solid-web form, so that the structural performance of each cylinder section is improved.
When each cylinder section adopts socket joint type connection, a bell mouth 2 and a spigot 1 of adjacent cylinder sections are connected with a stiffening rib 4 through a long bolt 405, and the bolt 405 and the spigot jointly realize integral connection of the cylinder sections.
The double-wall glass fiber reinforced plastic smoke exhaust pipe structure provides a stiffening rib 4 with a rigid diaphragm 402, and the stiffening rib 4 is different from a common cavity glass fiber reinforced plastic stiffening rib and has the comprehensive functions of hoisting, shaking prevention, connection of a pipe section and the like besides the stiffening function.
The stiffening rib 4 of the rigid transverse partition 402 provided by the double-wall type glass fiber reinforced plastic smoke exhaust cylinder structure can be used for a common single-cylinder wall glass fiber reinforced plastic cylinder besides the double-wall type glass fiber reinforced plastic smoke exhaust cylinder.
When the two-wall glass fiber reinforced plastic smoke exhaust cylinder structure is connected by flanges, flexible anti-corrosion and anti-permeability sealing rings are arranged between the flanges.
The double-wall glass fiber reinforced plastic smoke exhaust pipe structure can be used for a self-supporting glass fiber reinforced plastic chimney; can also be used for suspended glass fiber reinforced plastic chimneys; can be used for glass fiber reinforced plastic flues.
Fig. 1 to 6 show a vertical schematic view, an assembly schematic view and a sectional view of a standard chimney shell section of the double-wall glass fiber reinforced plastic chimney in a spigot-and-socket connection mode, wherein the shell section comprises a spigot 1, a bell mouth 2, a barrel body 3 and a stiffening rib 4. Wherein the socket 1 and the socket 2 can adopt a solid structure to ensure reasonable stress and structure of the whole shell ring. The barrel body 3 is of a double-wall structure and consists of an outer wall 301, an inner wall 302 and a plurality of connecting webs 303; the hollow structure has the obvious characteristics of saving materials, improving the heat insulation performance and the like, and can save more than 30% of materials for a smoke exhaust tube with a larger diameter under the condition of the same structural mechanical property; meanwhile, under the condition of the same material consumption, the hollow structure can provide larger bending rigidity of the cylinder wall and has obvious improvement effect on the local stability of the cylinder wall, thereby improving the integral bearing capacity of the smoke exhaust cylinder; meanwhile, the hollow structure improves the heat insulation performance, can reduce the amount of condensate generated by smoke, and has favorable effects of preventing icing and reducing chimney rain. The stiffening rib 4 is composed of a stiffening rib main body 401 structure and a rigid transverse partition 402, the main body 401 structure, the rigid transverse partition 402 and the double-wall smoke exhaust cylinder outer wall 301 form an integral structure, and the rigid transverse partition 402 is provided with a bolt hole 403 for mounting a long bolt 405; the rigid transverse partition 402 changes the single stiffening function of the common stiffening rib, so that the stiffening rib 4 has the comprehensive functions of shell ring connection, shell ring hoisting, shaking prevention and the like besides the stiffening function. The long bolts 405 connect the female end of the adjacent shell ring with the stiffening ribs 4 of the female end through the bolt holes 403, so that the upper and lower shell rings form an integral structure.
The double-wall glass fiber reinforced plastic smoke exhaust structure can adopt the socket type connecting structure, can also be used for a flange connecting structure, can be used for a chimney and can also be used for other structures such as a flue and the like; the stiffening ribs 4 provided with the "rigid cross-partitions 402" can be used with a double-walled chimney or with a single-walled fiberglass chimney as shown in FIGS. 7-10.
While the utility model has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (9)
1. A double-walled formula glass steel chimney which characterized in that: the smoke exhaust tube is provided with a double-layer tube wall, the double-layer tube wall comprises an inner wall and an outer wall, and a connecting web plate is arranged between the inner wall and the outer wall; a first cavity is arranged among the inner wall, the outer wall and the connecting web plate; the periphery of the outer wall of the double-layer cylinder wall is provided with an annular stiffening rib.
2. A double-walled glass fiber reinforced plastic chimney as defined in claim 1 wherein: the two ends of the smoke exhaust cylinder are provided with connecting structures, and the connecting structures comprise socket type connection or flange bolt connection; or the smoke exhaust tube is of an integrated integral structure without seams.
3. A double-walled glass fiber reinforced plastic chimney as defined in claim 2 wherein: the two ends of the smoke exhaust tube are respectively provided with a socket and a bellmouth; the socket and spigot are provided in solid belly form.
4. A double-walled glass fiber reinforced plastic chimney as defined in claim 3 wherein: the inner wall and the outer wall are of concentric circle structures, and the inner wall and the outer wall are connected into a whole through a connecting web plate.
5. A double-walled glass fiber reinforced plastic chimney as set forth in claim 4, wherein: the length direction of the connecting web is parallel to the central axis of the smoke exhaust tube, and the width direction of the connecting web is radial along the smoke exhaust tube.
6. A double-walled glass fiber reinforced plastic chimney as set forth in claim 5 wherein: the inboard of inner wall is equipped with impervious anticorrosive coating, and the outside of outer wall is equipped with the inoxidizing coating.
7. A double-walled glass fiber reinforced plastic chimney as set forth in claim 6 wherein: the stiffening rib is of a hollow structure, and a rigid transverse partition is arranged inside the stiffening rib; a second cavity is arranged between the rigid transverse partitions; the bolt holes are formed in the rigid transverse partitions, and bolts used for connecting adjacent stiffening ribs are arranged in the bolt holes.
8. A double-walled glass fiber reinforced plastic chimney as defined in claim 7 wherein: the central axis of the bolt hole is parallel to the central axis of the smoke exhaust tube.
9. A double-walled glass fiber reinforced plastic chimney as defined in claim 2 wherein: when the connecting structure is arranged in a flange connection mode, a flexible anti-corrosion anti-permeability sealing ring is arranged between the flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120982853.5U CN215671431U (en) | 2021-05-10 | 2021-05-10 | Double-wall glass fibre reinforced plastic smoke exhaust tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120982853.5U CN215671431U (en) | 2021-05-10 | 2021-05-10 | Double-wall glass fibre reinforced plastic smoke exhaust tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215671431U true CN215671431U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120982853.5U Active CN215671431U (en) | 2021-05-10 | 2021-05-10 | Double-wall glass fibre reinforced plastic smoke exhaust tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215671431U (en) |
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2021
- 2021-05-10 CN CN202120982853.5U patent/CN215671431U/en active Active
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