Weather-proof anti-aging glass fiber reinforced plastic chimney structure

Abstract

The invention belongs to the technical field of glass fiber reinforced plastic chimneys, and particularly relates to a weather-proof anti-aging glass fiber reinforced plastic chimney structure. The chimney barrel comprises a reinforcing structure layer for improving the overall rigidity of the glass fiber reinforced plastic chimney and an anti-corrosion lining layer arranged in the reinforcing structure layer, and the corrosion resistance, the seepage resistance and the aging resistance of the glass fiber reinforced plastic chimney are achieved through the reinforcing structure layer and the anti-corrosion lining layer; the reinforced structure layer comprises a reinforced layer and an outer protective layer, the anti-corrosion lining layer and the reinforced structure layer are matched, the glass fiber reinforced plastic chimney is formed by curing glass fibers and resin and has excellent corrosion resistance, the resin is epoxy vinyl resin, erosion of various corrosive gases can be resisted, and meanwhile the anti-corrosion performance of the glass fiber reinforced plastic chimney is improved. Through the laying structure of the anti-corrosion lining layer and the reinforced structure layer, the glass fiber reinforced plastic chimney has corrosion resistance, leakage resistance, higher mechanical strength, longer anti-aging performance and longer service life, and the replacement and maintenance frequency is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of FRP chimneys, and particularly relates to a weather-resistant and anti-aging FRP chimney structure. Background Art

[0002] The wet flue gas treated by the scrubber and absorber is highly acidic and has strong corrosiveness to the surface of the smoke exhaust cylinder made of metal materials. In response to the strongly corrosive wet flue gas, the international community has begun to select FRP materials with strong corrosion resistance to prepare FRP chimneys and has formulated relevant standards and specifications. So far, FRP chimneys have been recognized by the market due to their excellent corrosion resistance, light weight, high strength, low manufacturing cost, and low daily maintenance cost, and the usage is increasing day by day; An FRP chimney is a composite chimney with glass fiber reinforced plastic as the core material, which is composed of an inner lining layer, a structural layer, and an outer surface layer, and is manufactured by a winding molding process; In the prior art, the Chinese utility model content with the application number: CN202022185186.6 discloses an FRP inner wall suitable for chimneys in cold regions, including an FRP main body. Limiting edges are provided on both sides of the top of the FRP main body, and limiting grooves are respectively opened on both sides of the bottom of the FRP main body. The FRP main body includes two FRP outer walls. An antifreeze layer is provided inside the two FRP outer walls, and a waterproof coating and a fireproof coating are respectively sprayed on the surfaces of the two FRP outer walls. The FRP main body is fixedly connected with a strengthening layer through a connector. The strengthening layer includes a first outer shell and a second outer shell, and a heat preservation layer is filled between the first outer shell and the second outer shell. This utility model combines the FRP with a strengthening layer through the cooperation of connectors to form the inner wall of the chimney, and improves the overall stiffness through the strengthening layer, which can further improve the protection performance and ensure the overall safety; Although the overall stiffness of the FRP chimney is improved in the above technical solution, since the FRP chimney is made of ordinary FRP, the resin in the ordinary FRP chimney is prone to aging and powdering under long-term ultraviolet irradiation, which in turn causes the fibers to be exposed to the outside, resulting in a decrease in the strength of the FRP chimney. At the same time, due to the high-temperature working conditions inside the FRP chimney, the resin in the FRP chimney may soften or decompose, affecting the durability. Therefore, we need to propose a weather-resistant and anti-aging FRP chimney structure. Summary of the Invention

[0003] In view of the above problems, the invention provides a weather-resistant and anti-aging FRP chimney structure, including: A chimney barrel; The chimney barrel includes a reinforcing structure layer that improves the overall stiffness of the FRP chimney and an anti-corrosion inner lining layer provided inside the reinforcing structure layer. The corrosion resistance, anti-seepage, and anti-aging properties of the FRP chimney are realized through the reinforcing structure layer and the anti-corrosion inner lining layer; The enhanced structure layer includes an enhanced layer and an outer protective layer. The enhanced layer is arranged inside the outer protective layer and is used to achieve high mechanical strength of the FRP chimney. The anti-corrosion lining layer includes a main inner surface corrosion-resistant layer and a secondary inner surface corrosion-resistant layer. The main inner surface corrosion-resistant layer is arranged inside the secondary inner surface corrosion-resistant layer, and the secondary inner surface corrosion-resistant layer is arranged inside the enhanced layer. The main inner surface corrosion-resistant layer, the secondary inner surface corrosion-resistant layer, the enhanced layer and the outer protective layer are arranged in sequence from the inside to the outside on the FRP chimney.

[0004] Furthermore, the main inner surface corrosion-resistant layer includes polyester cloth and polyester surface mat. Epoxy vinyl resin is smeared on the polyester cloth, and the polyester surface mat is bonded to the polyester cloth through epoxy vinyl resin. A certain proportion of curing agent and accelerator are filled in the epoxy vinyl resin.

[0005] Furthermore, the content of epoxy vinyl resin in the main inner surface corrosion-resistant layer is greater than or equal to 90%, and the mixed content of the polyester cloth and the polyester surface mat is less than or equal to 10%.

[0006] Furthermore, the thickness of the main inner surface corrosion-resistant layer is 0.5 mm, and the thickness of the secondary inner surface corrosion-resistant layer is 2 mm.

[0007] Furthermore, the secondary inner surface corrosion-resistant layer is mainly made of chopped strand mat and fiberglass square cloth. The chopped strand mat is bonded to the fiberglass square cloth through epoxy vinyl resin. The content of epoxy vinyl resin in the secondary inner surface corrosion-resistant layer is greater than or equal to 80%.

[0008] Furthermore, the enhanced layer is mainly composed of a winding forming layer and a hand lay-up layer. The winding forming layer is arranged between the hand lay-up layer and the secondary inner surface corrosion-resistant layer. The winding forming layer is mainly made of fiberglass winding yarn and epoxy vinyl resin. The fiberglass winding yarn is wound reciprocally on the outside of the secondary inner surface anti-corrosion layer. The content of epoxy vinyl resin in the winding forming layer is 25 - 35%. The hand lay-up layer is mainly made of fiberglass cloth. The fiberglass cloth is laid on the outside of the winding forming layer through epoxy vinyl resin.

[0009] Furthermore, the fiberglass cloth is spirally wound along the axial direction of the FRP chimney. The winding angle of the fiberglass cloth is 40 - 90 degrees. The strength of the winding forming layer is inversely proportional to the content of epoxy vinyl resin.

[0010] Furthermore, the fiber surface density of the polyester cloth is 40 - 70 g / m, and the fiber surface density of the fiberglass winding yarn is 100 - 800 g / m.

[0011] Furthermore, the thickness of the enhanced structure layer is 22.5 mm, and the thickness of the outer protective layer is 1 mm.

[0012] Furthermore, the outer protective layer is a polyester film, which is mainly made by mixing epoxy vinyl resin and ultraviolet absorber, and the epoxy vinyl resin content of the polyester film is greater than or equal to 90%.

[0013] The beneficial effects of the present invention are as follows: The FRP chimney of the present invention is made by curing glass fiber and resin through the cooperation between the anti-corrosion lining layer and the enhanced structure layer. It has excellent corrosion resistance. The resin used is epoxy vinyl resin, which can resist the erosion of various corrosive gases. At the same time, through the laying structure of the anti-corrosion lining layer and the enhanced structure layer, the FRP chimney has corrosion resistance, anti-leakage performance, higher mechanical strength and longer anti-aging performance. Its service life is long, reducing the frequency of replacement and maintenance; Through the cooperation between the winding forming layer and the hand lay-up layer of the enhanced structure layer of the present invention, the material specific gravity of the FRP chimney is small, which is easier to transport and install compared with other metal products, and the comprehensive installation cost is lower. Using mechanical winding forming, it has high strength and can meet the mechanical property requirements of the chimney; There are various types of FRP materials in the present invention, and the forming process is flexible, and it can be customized according to different usage conditions, including raw material selection, manufacturing process and installation method; The FRP material of the present invention has a small density, is light in weight, is convenient for installation, has a short construction period, usually shortens the construction period by nearly half compared with the traditional method of making chimneys, and the maintenance cost of the FRP chimney is low, the maintenance period is long, and it can withstand high temperatures, increasing the service life.

[0014] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Shows a schematic structural diagram of a chimney barrel according to an embodiment of the present invention; Figure 2 Shows a schematic structural diagram of the enhanced structural layer according to an embodiment of the present invention; Figure 3 Shows a schematic structural diagram of the anti-corrosion lining layer according to an embodiment of the present invention; Figure 4 Shows a schematic cross-sectional structural diagram of the chimney barrel according to an embodiment of the present invention; Figure 5 Shows a schematic structural diagram of the corrosion-resistant layer on the main inner surface according to an embodiment of the present invention; Figure 6 Shows a schematic structural diagram of the corrosion-resistant layer on the secondary inner surface according to an embodiment of the present invention; Figure 7 Shows a schematic structural diagram of the winding forming layer and the hand lay-up layer according to an embodiment of the present invention.

[0017] In the figure: 1. Chimney barrel; 11. Anti-corrosion lining layer; 111. Corrosion-resistant layer on the main inner surface; 1111. Polyester cloth; 1112. Polyester surface mat; 112. Corrosion-resistant layer on the secondary inner surface; 1121. Chopped strand mat of glass fiber; 1122. Square cloth of glass fiber; 12. Enhanced structural layer; 121. Reinforcing layer; 1211. Winding forming layer; 12111. Glass fiber winding yarn; 1212. Hand lay-up layer; 12121. Glass fiber cloth; 122. Outer protective layer. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1-7 Shown, the embodiments of the present invention provide a weather-resistant and anti-aging FRP chimney structure, including a chimney barrel 1. The chimney barrel 1 includes an enhanced structural layer 12 for improving the overall stiffness of the FRP chimney and an anti-corrosion lining layer 11 disposed inside the enhanced structural layer 12. The corrosion resistance, impermeability and anti-aging properties of the FRP chimney are realized through the enhanced structural layer 12 and the anti-corrosion lining layer 11; The double - layer structure design improves the mechanical strength of the FRP chimney. Moreover, the enhanced structure layer 12, with its high - strength characteristics, can effectively resist external wind pressure, seismic and other load effects, ensuring that the chimney remains stable in complex environments and is not easily deformed or damaged; while the anti - corrosion lining layer 11 isolates the corrosive flue gas from the external structure, preventing chemical substances from eroding the chimney, greatly enhancing the anti - permeability of the chimney and preventing flue gas leakage from causing environmental pollution or safety hazards; at the same time, the two work together to delay the aging process of the materials, significantly extend the service life of the FRP chimney, and reduce the maintenance and replacement costs.

[0020] The enhanced structure layer 12 includes an enhanced layer 121 and an outer protective layer 122. The enhanced layer 121 is arranged inside the outer protective layer 122 and is used to achieve high mechanical strength for the FRP chimney. The enhanced layer 121 adopts high - strength materials and a scientific composite process, endowing the chimney with excellent compressive, tensile and shear resistance properties, enabling it to bear its own weight, flue gas pressure and dynamic loads of the external environment, ensuring the structural stability of the chimney during long - term use; the outer protective layer 122 can not only resist the damage of natural factors such as ultraviolet rays, sand, wind, rain and snow to the enhanced layer 121, but also prevent mechanical damage and chemical substance erosion, further enhancing the durability of the enhanced layer 121.

[0021] The anti - corrosion lining layer 11 includes a main inner - surface corrosion - resistant layer 111 and a secondary inner - surface corrosion - resistant layer 112. The main inner - surface corrosion - resistant layer 111 is arranged inside the secondary inner - surface corrosion - resistant layer 112, and the secondary inner - surface corrosion - resistant layer 112 is arranged inside the enhanced layer 121, forming a multi - level and all - round anti - corrosion barrier. The main inner - surface corrosion - resistant layer 111 is in direct contact with the corrosive flue gas. With its excellent chemical corrosion resistance, it can quickly neutralize and adsorb harmful chemical substances in the flue gas, killing the corrosion effect at the source; the secondary inner - surface corrosion - resistant layer 112 plays an auxiliary and strengthening role, further blocking the penetration of residual corrosive substances, while enhancing the overall strength and toughness of the anti - corrosion lining layer 11, preventing problems such as cracking and peeling of the anti - corrosion lining layer 11 under flue gas scouring and temperature changes. The main inner - surface corrosion - resistant layer 111, the secondary inner - surface corrosion - resistant layer 112, the enhanced layer 121 and the outer protective layer 122 are arranged in sequence from the inside to the outside on the FRP chimney.

[0022] Specifically, such as Figures 3-5As shown, the main inner surface corrosion-resistant layer 111 includes a polyester cloth 1111 and a polyester surface mat 1112. The polyester cloth 1111 is coated with an epoxy vinyl resin, and the polyester surface mat 1112 is bonded to the polyester cloth 1111 through the epoxy vinyl resin. The epoxy vinyl resin is filled with a certain proportion of curing agent and accelerator. The epoxy vinyl resin has extremely strong chemical stability and corrosion resistance. The high content of resin can form a continuous and dense corrosion-resistant film layer, which has excellent resistance to various corrosive media such as strong acids, strong alkalis, and salts, effectively preventing the harmful substances in the flue gas from eroding the anti-corrosion lining layer 11. And the use of curing agent and accelerator can accelerate the curing speed of the main inner surface corrosion-resistant layer 111 on the mold, thereby improving the production efficiency of the chimney.

[0023] The epoxy vinyl resin content of the main inner surface corrosion-resistant layer 111 is greater than or equal to 90%, and the mixed content of the polyester cloth 1111 and the polyester surface mat 1112 is less than or equal to 10%. The polyester cloth 1111 and the polyester surface mat 1112 enhance the flexibility and mechanical strength of the resin layer, enabling the main inner surface corrosion-resistant layer 111 to have good impact resistance and tear resistance while maintaining excellent corrosion resistance, and being able to withstand the high-speed scouring of the flue gas and the stress effects brought about by temperature changes.

[0024] The thickness of the main inner surface corrosion-resistant layer 111 is 0.5 mm, and the thickness of the secondary inner surface corrosion-resistant layer 112 is 2 mm. The thickness settings of the main inner surface corrosion-resistant layer 111 and the secondary inner surface corrosion-resistant layer 112 ensure sufficient corrosion resistance while reducing the overall weight of the chimney, lowering the material cost and installation difficulty, and at the same time improving the manufacturing efficiency and production cycle of the chimney.

[0025] As Figure 2 and 6 shown, the secondary inner surface corrosion-resistant layer 112 is mainly made by compounding chopped strand mat 1121 of glass fiber and fiberglass square cloth 1122. The chopped strand mat 1121 of glass fiber is bonded to the fiberglass square cloth 1122 through the epoxy vinyl resin. The epoxy vinyl resin content of the secondary inner surface corrosion-resistant layer 112 is greater than or equal to 80%. The chopped strand mat 1121 of glass fiber has good covering and filling properties, can be closely combined with the fiberglass square cloth 1122, fill the voids, eliminate the weak points, and enhance the overall density and uniformity of the anti-corrosion lining layer 11; the fiberglass square cloth 1122 provides higher tensile strength and rigidity, enabling the secondary inner surface corrosion-resistant layer 112 to have good anti-deformation ability and load-bearing capacity; The high content of epoxy vinyl resin further improves the interlayer bonding strength and corrosion resistance, ensuring that during long-term use, the various materials are closely combined and not easily delaminated or peeled off.

[0026] As Figure 7As shown, the reinforcement layer 121 is mainly composed of a winding forming layer 1211 and a hand lay-up layer 1212. The winding forming layer 1211 is arranged between the hand lay-up layer 1212 and the secondary inner surface corrosion resistant layer 112; The winding molding layer 1211 is mainly made of a mixture of glass fiber winding yarn 12111 and epoxy vinyl resin. The glass fiber winding yarn 12111 is reciprocatingly wound on the outer side of the secondary inner surface anti-corrosion layer. The epoxy vinyl resin content of the winding molding layer 1211 is 25-35%. The reciprocating winding of the glass fiber winding yarn 12111 forms an orderly arrangement of the glass fiber winding yarn 12111 in the circumferential and axial directions of the chimney, giving full play to the high strength of the glass fiber winding yarn 12111, greatly improving the circumferential and axial strength of the chimney, and enabling it to withstand enormous pressure and tension. The low epoxy vinyl resin content (about 30%) ensures the effective load-bearing of the glass fiber winding yarn 12111, avoids the reduction of strength due to excessive resin, and also reduces the weight of the structure. The hand lay-up layer 1212 is mainly made of glass fiber cloth 12121. The glass fiber cloth 12121 is laid on the outside of the winding molding layer 1211 through epoxy vinyl resin. The hand lay-up layer 1212 fills the unevenness of the winding molding layer 1211 surface by laying the glass fiber cloth 12121 layer by layer, strengthens the bonding strength and integrity between the layers, and further improves the density and fatigue resistance of the reinforcement layer 121. The two work together to make the reinforcement layer 121 have excellent comprehensive mechanical properties, which can adapt to complex and changeable working conditions, ensure that the fiberglass chimney maintains structural stability during long-term operation, effectively reduce the safety risks caused by insufficient structural strength, extend the service life of the chimney, and improve its reliability and durability.

[0027] The glass fiber cloth 12121 is spirally wound around the fiberglass reinforced plastic chimney axially, and the winding angle of the glass fiber cloth 12121 is 40-90 degrees. The strength of the winding forming layer 1211 is inversely proportional to the content of the epoxy vinyl resin. The glass fiber cloth 12121 is spirally wound and the winding angle is controlled at 40-90 degrees, which optimizes the distribution of the mechanical properties of the chimney. The winding method within this angle range can make the glass fiber bear stress uniformly in the axial and circumferential directions of the chimney, effectively improving the chimney's compressive, tensile and torsional resistance, so that it can maintain good structural stability when bearing loads in different directions; at the same time, this winding method also enhances the bonding force between the glass fiber cloth 12121 and the epoxy vinyl resin, and improves the integrity of the composite material.

[0028] like Figure 5 and 7As shown, the fiber surface density of the polyester fabric 1111 is 40 - 70 g / m, and the fiber surface density of the fiberglass winding yarn 12111 is 100 - 800 g / m. The lower fiber surface density can reduce the weight of the chimney, lower the transportation and installation costs, and improve the construction efficiency. At the same time, the appropriate surface density also ensures that the material has sufficient strength and toughness to effectively resist the influence of external loads and environmental factors.

[0029] As Figures 1-2 shown, the thickness of the reinforcement structure layer 12 is 22.5 mm, and the thickness of the outer protective layer 122 is 1 mm. While ensuring high mechanical strength, the reinforcement structure layer 12 realizes the optimized utilization of materials. This thickness can fully exert the performance advantages of each material in the reinforcement layer 121, ensuring that the chimney has sufficient bearing capacity and stability to cope with various complex working conditions and environmental loads. At the same time, it avoids material waste and cost increase caused by excessive thickness, achieving a balance between economic benefits and performance indicators. The 1 - mm - thick outer protective layer 122 uses a polyester film compounded with a high - content epoxy vinyl ester resin and an ultraviolet absorber, forming an efficient protective barrier. The high - content epoxy vinyl ester resin endows the polyester film with excellent chemical stability and wear resistance, capable of resisting the erosion of sand, rain, chemicals, etc. on the reinforcement structure layer 12.

[0030] As Figure 2 shown, the outer protective layer 122 is a polyester film, which is mainly made by mixing epoxy vinyl ester resin and an ultraviolet absorber. The epoxy vinyl ester resin content of the polyester film is greater than or equal to 90%. The ultraviolet absorber can effectively absorb and convert ultraviolet rays, preventing the degradation of materials by ultraviolet rays, and avoiding the aging and embrittlement of the reinforcement structure layer 12 due to ultraviolet irradiation, thus extending the service life of the FRP chimney. The thickness combination of the outer protective layer 122 and the reinforcement structure layer 12 not only ensures the structural strength of the chimney but also provides good external protection, enabling the chimney to maintain good performance in various harsh environments, reducing the maintenance cost, and improving the reliability and durability of operation. The epoxy vinyl ester resin can be replaced by resins with the same performance.

[0031] The FRP chimney is composed of 9 segmented chimney barrels 1, with a total length of about 60 meters, divided into 9 sections. From bottom to top, the length of each section is 12m / 5.5m / 5.5m / 5.5m / 5.5m / 5.5m / 5.5m / 5.5m / 9.5m. The 9 chimney barrels 1 of the FRP chimney are manufactured in segments and are hoisted by a truck crane during installation, and laminated and connected on - site. The pasting width of the docking joint is in accordance with 2L≥nPd / 2τ. n is the safety factor, which can take the value of 100. P is the internal pressure of the chimney cylinder 1, P = 1 MPa (atmospheric pressure); 2L is the bonding length, in mm.

[0032] During the design, manufacture, and acceptance of the FRP chimney, the following latest current national standards shall be implemented and complied with.

[0033] GB / T50051-2021 Technical Standard for Chimney Engineering, HG / T20696-2018 Technical Specification for Fiber Reinforced Plastic Chemical Equipment, JC552-2011 Fiberglass Wound Reinforced Thermosetting Resin Pressure Pipe, CD130A19-85 Design Technical Conditions for Hand-laid FRP, GB / T1447-2005 Test Method for Tensile Properties of Fiberglass Wound Reinforced Plastics, GB / T1449-2005 Test Method for Flexural Properties of Fiberglass Wound Reinforced Plastics, GB / T2577-2005 Test Method for Resin Content of Fiberglass Wound Reinforced Plastics, GB / T2576-2005 Test Method for Insoluble Component Content of Resin in Fiberglass Wound Reinforced Plastics, GB / T3854-2017 Test Method for Barcol Hardness of Fiberglass Wound Reinforced Plastics, GB / T18369—2001 Fiberglass Rovings, GB / T8237--2005 Liquid Unsaturated Polyester Resins for Fiber Reinforced Plastics, GB50051-2013 Chimney Design Code, NBT47038-2013 Constant Force Spring Supports and Hangers, HG / T3983-2007 Field Wound FRP Large Containers Resistant to Chemical Corrosion, GB / T3857-2017 Test Method for Chemical Resistance of Glass Fiber Reinforced Thermosetting Plastics.

[0034] When preparing the chimney cylinder 1, on the cleaned mold, evenly apply the epoxy vinyl ester resin added with a certain proportion of curing agent and accelerator, and use polyester surface mat 1112, fiberglass chopped strand mat 1121, and fiberglass woven roving 1122 for reinforcement from the inside to the outside in sequence, and use a bubble-rolling roller to remove the bubbles to make it bubble-free, and complete the curing production of the anti-corrosion lining layer 11; Then, reciprocally wind the fiberglass winding yarn 12111 with a fiber surface density of 100 - 800 g / m² and about 30% content of epoxy vinyl ester resin at a winding angle of 40 - 90 degrees to form a winding molding layer 1211 on the inner surface corrosion-resistant layer 112; then, on the outside of the winding molding layer 1211, lay fiberglass cloth 12121 with epoxy vinyl ester resin to form a hand-laid layer 1212. After completing the reinforcement layer 121, mix the epoxy vinyl ester resin with an ultraviolet absorber and attach it to the outside of the hand-laid layer 1212, and complete the manufacture of the FRP chimney after curing.

[0035] It should be noted that the key to manufacturing a FRP chimney lies in the quality of the anti-corrosion lining layer 11. If there are a large number of air bubbles in the anti-corrosion lining layer 11, after the chimney stores liquid at a certain temperature, the air bubbles expand when heated, damaging the main inner surface corrosion-resistant layer 111, and gradually leaking out after being used for a period of time. The used felt cloth composite structure avoids these defects because both the chopped strand mat 1121 and the fiberglass square cloth 1122 are products treated with a coupling agent, and the epoxy vinyl ester resin has good permeability. Then, a bubble-removing roller is used to discharge the air bubbles, forming a dense whole, thereby playing a role in anti-corrosion and anti-leakage.

[0036] When installing the FRP chimney, the chimney barrel 1 of the FRP chimney is manufactured and installed in 9 sections, installed section by section from bottom to top, and carried out synchronously with the installation of the steel frame; After the first section of the chimney barrel 1 is hoisted and fixed, the second section of the chimney barrel 1 is hoisted to the upper end of the first section of the chimney barrel 1, and the joint of the first section of the chimney barrel 1 and the second section of the chimney barrel 1 is laminated and cured; The third section of the chimney barrel 1 is hoisted to the upper end of the second section of the chimney barrel 1, so that the joint of the second section of the chimney barrel 1 and the third section of the chimney barrel 1 is laminated and cured; Repeat the above operations until the ninth section of the chimney barrel 1 is hoisted. Hoist the ninth section of the chimney barrel 1 to the upper end of the eighth section of the chimney barrel 1, so that the joint of the upper end of the ninth exhaust pipe and the eighth section of the chimney barrel 1 is laminated, cured, install the retaining wheel → inspect and accept.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A weather-resistant and anti-aging fiberglass reinforced plastic chimney structure, characterized in that, Comprising: Chimney barrel (1); The chimney barrel (1) includes a reinforcing structure layer (12) for enhancing the overall stiffness of the FRP chimney and an anti-corrosion lining layer (11) disposed inside the reinforcing structure layer (12). The corrosion resistance, impermeability and anti-aging properties of the FRP chimney are achieved through the reinforcing structure layer (12) and the anti-corrosion lining layer (11); The reinforcing structure layer (12) includes a reinforcing layer (121) and an outer protective layer (122). The reinforcing layer (121) is disposed inside the outer protective layer (122) and is used to achieve high mechanical strength of the FRP chimney; The anti-corrosion lining layer (11) includes a main inner surface corrosion-resistant layer (111) and a secondary inner surface corrosion-resistant layer (112). The main inner surface corrosion-resistant layer (111) is disposed inside the secondary inner surface corrosion-resistant layer (112), and the secondary inner surface corrosion-resistant layer (112) is disposed inside the reinforcing layer (121); The main inner surface corrosion-resistant layer (111), the secondary inner surface corrosion-resistant layer (112), the reinforcing layer (121) and the outer protective layer (122) are sequentially disposed on the FRP chimney from the inside to the outside.

2. The weather-resistant and anti-aging FRP chimney structure according to claim 1, wherein: The main inner surface corrosion-resistant layer (111) includes a polyester cloth (1111) and a polyester surface mat (1112). Epoxy vinyl resin is applied on the polyester cloth (1111), and the polyester surface mat (1112) is adhered to the polyester cloth (1111) through epoxy vinyl resin. A certain proportion of curing agent and accelerator are filled in the epoxy vinyl resin.

3. The weather-resistant and anti-aging fiberglass chimney structure according to claim 2, wherein: The epoxy vinyl resin content of the main inner surface corrosion-resistant layer (111) is greater than or equal to 90%, and the mixed content of the polyester cloth (1111) and the polyester surface mat (1112) is less than or equal to 10%.

4. A weather-resistant and anti-aging FRP chimney structure according to claim 3, characterized in that: The thickness of the main inner surface corrosion-resistant layer (111) is 0.5 mm, and the thickness of the secondary inner surface corrosion-resistant layer (112) is 2 mm.

5. A weather-resistant and anti-aging fiberglass chimney structure according to claim 4, characterized in that: The secondary inner surface corrosion-resistant layer (112) is mainly made of a composite of chopped strand mat (1121) and fiberglass square cloth (1122). The chopped strand mat (1121) is adhered to the fiberglass square cloth (1122) through epoxy vinyl resin. The epoxy vinyl resin content of the secondary inner surface corrosion-resistant layer (112) is greater than or equal to 80%.

6. The weather-resistant and anti-aging fiberglass chimney structure according to claim 5, characterized in that: The reinforcing layer (121) is mainly composed of a filament winding layer (1211) and a hand lay-up layer (1212). The filament winding layer (1211) is disposed between the hand lay-up layer (1212) and the secondary inner surface corrosion-resistant layer (112); The filament winding layer (1211) is mainly made of a mixture of fiberglass winding yarn (12111) and epoxy vinyl resin. The fiberglass winding yarn (12111) is wound reciprocally on the outside of the secondary inner surface anti-corrosion layer. The epoxy vinyl resin content of the filament winding layer (1211) is 25 - 35%; The hand lay-up layer (1212) is mainly made of fiberglass cloth (12121). The fiberglass cloth (12121) is laid on the outside of the filament winding layer (1211) through epoxy vinyl resin.

7. The weather-resistant and anti-aging FRP chimney structure according to claim 6, characterized in that: The glass fiber cloth (12121) is spirally wound along the axial direction of the FRP chimney, the winding angle of the glass fiber cloth (12121) is 40-90 degrees, and the strength of the winding forming layer (1211) is inversely proportional to the content of epoxy vinyl resin.

8. A weather-resistant and anti-aging fiberglass chimney structure according to claim 7, characterized in that: The fiber surface density of the polyester cloth (1111) is 40-70 g / m, and the fiber surface density of the glass fiber winding yarn (12111) is 100-800 g / m.

9. A weather-resistant and anti-aging fiberglass chimney structure according to claim 8, characterized in that: The thickness of the reinforcing structure layer (12) is 22.5 mm, and the thickness of the outer protective layer (122) is 1 mm.

10. A weather-resistant and anti-aging fiberglass chimney structure according to claim 9, characterized in that: The outer protective layer (122) is a polyester film, the polyester film is mainly made of a mixture of epoxy vinyl resin and an ultraviolet absorber, and the epoxy vinyl resin content of the polyester film is greater than or equal to 90%.

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