Glass fiber reinforced plastic chimney sealing structure

Abstract

The glass fiber reinforced plastic chimney sealing structure comprises upper connecting sections and lower connecting sections, connecting rings are integrally arranged at the lower ends of the upper connecting sections, connecting grooves are formed in the inner walls of the connecting rings, and positioning rings matched with the connecting grooves are arranged at the upper ends of the lower connecting sections; a sealing assembly is arranged in each connecting groove, each sealing assembly comprises a sealing ring and a driving mechanism, a mounting groove is formed in each connecting groove, each sealing ring is mounted in the corresponding mounting groove, and the inner ring wall of each sealing ring abuts against the outer ring wall of the corresponding positioning ring; the driving assembly extrudes the sealing ring when the glass fiber reinforced plastic chimney exhausts smoke, so that the sealing ring is attached to the groove wall of the mounting groove and the outer ring wall of the positioning ring more tightly. The sealing effect can be effectively improved, smoke is prevented from leaking from the joint when the chimney discharges smoke, meanwhile, when the glass fiber reinforced plastic chimney does not discharge smoke, the sealing ring can be effectively loosened, and the sealing ring is prevented from being in a large deformation state for a long time and losing efficacy.

Description

Technical Field

[0001] The invention relates to the technical field of glass fiber reinforced plastic chimneys, and in particular to a sealing structure of a glass fiber reinforced plastic chimney. Background Art

[0002] FRP chimneys are made of FRP. The product has the characteristics of low cost, short production cycle, long service life, easy processing, simple installation, light weight, high strength and rigidity. It is made of FRP with smooth inner and outer surfaces, anti-aging performance, and excellent corrosion resistance at high temperatures. It is also very convenient to add sprinklers, filters, etc. to absorb harmful components in the flue gas.

[0003] Existing FRP chimneys mostly adopt a multi-section butt joint structure, that is, multiple FRP chimney sections are stacked and connected in an upper and lower manner, and the butt joints are sealed with sealing rings. However, the sealing structure of the existing FRP chimney has poor sealing effect and is prone to failure after a long time. Summary of the Invention

[0004] The problem to be solved by the present invention is: to provide a glass fiber reinforced plastic chimney sealing structure, by setting a sealing component, the sealing component includes a sealing ring and a driving mechanism, the driving component squeezes the sealing ring when the glass fiber reinforced plastic chimney is exhausting smoke, so that the sealing ring fits more tightly with the groove wall of the installation groove and the outer ring wall of the positioning ring, thereby effectively improving the sealing effect and preventing smoke from leaking from the connection when the chimney is exhausting smoke. At the same time, when the glass fiber reinforced plastic chimney is not exhausting smoke, the sealing ring can be effectively relaxed to prevent the sealing ring from being in a large deformation state for a long time and becoming invalid.

[0005] The present invention provides a technical solution to solve the above problems: a glass fiber reinforced plastic chimney sealing structure, comprising an upper connecting section and a lower connecting section, wherein the lower end of the upper connecting section is integrally provided with a connecting ring, the inner wall of the connecting ring is provided with a connecting groove, and the upper end of the lower connecting section is provided with a positioning ring that cooperates with the connecting groove; A sealing assembly is provided in the connecting groove, and the sealing assembly includes a sealing ring and a driving mechanism. A mounting groove is provided in the connecting groove, and the sealing ring is installed in the mounting groove. The inner ring wall of the sealing ring abuts against the outer ring wall of the positioning ring. When the fiberglass reinforced plastic chimney is exhausting smoke, the driving assembly squeezes the sealing ring so that the sealing ring fits more tightly with the groove wall of the mounting groove and the outer ring wall of the positioning ring.

[0006] Preferably, the driving mechanism includes a driving ring and an extrusion ring, the driving ring and the extrusion ring are arranged in a connecting groove, the lower end of the driving ring abuts against the extrusion ring, and the upper end of the sealing ring is provided with an extrusion groove that cooperates with the extrusion ring.

[0007] Preferably, the end surface of the extrusion ring in contact with the extrusion groove is V-shaped, and the extrusion groove is a V-shaped groove that matches the shape of the extrusion ring.

[0008] Preferably, the drive ring is made of titanium alloy memory material and will undergo axial deformation after being subjected to temperature changes.

[0009] Preferably, an air storage groove is provided in the middle position of the sealing ring, and expansion grooves are provided inside the edge positions on both sides of the sealing ring, and the expansion grooves are connected to the air outlet grooves through connecting holes.

[0010] Preferably, elastic support rings are fixedly connected to both side walls of the gas storage tank.

[0011] Preferably, the elastic support ring is made of carbon spring steel sheet.

[0012] Preferably, the elastic support ring is provided with a vent hole connected to the connecting hole.

[0013] Preferably, the extrusion ring is made of a hard material with a smooth surface.

[0014] Compared with the prior art, the advantages of the present invention are: the present invention provides a sealing assembly, which includes a sealing ring and a driving mechanism. The driving assembly squeezes the sealing ring when the fiberglass reinforced plastic chimney is exhausting smoke, so that the sealing ring fits more tightly with the groove wall of the installation groove and the outer ring wall of the positioning ring, thereby effectively improving the sealing effect and preventing smoke from leaking from the connection when the chimney is exhausting smoke. At the same time, when the fiberglass reinforced plastic chimney is not exhausting smoke, the sealing ring can be effectively relaxed to prevent the sealing ring from being in a large deformation state for a long time and failing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 yes Figure 2 A magnified schematic diagram of point A in the middle; Figure 4 It is a schematic diagram of the three-dimensional structure of the sealing ring of the present invention; Figure 5 is a cross-sectional view of the sealing ring of the present invention; Figure 6 It is a three-dimensional structural cross-sectional view of the extrusion ring of the present invention.

[0017] The accompanying drawings are marked: 1. Upper connecting section, 2. Connecting ring, 3. Lower connecting section, 4. Driving ring, 5. Connecting groove, 6. Positioning ring, 7. Sealing ring, 8. Expansion groove, 9. Connecting pipe, 10. Air storage tank, 11. Elastic support ring, 12. Extrusion groove, 13. Extrusion ring. DETAILED DESCRIPTION

[0018] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0019] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. Throughout the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0021] In the present invention, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0023] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] The specific embodiment of the present invention is shown in the accompanying drawings. A glass fiber reinforced plastic chimney sealing structure includes an upper connecting section 1 and a lower connecting section 3. The lower end of the upper connecting section 1 is integrally provided with a connecting ring 2, and the inner wall of the connecting ring 2 is provided with a connecting groove 5. The upper end of the lower connecting section 3 is provided with a positioning ring 6 that cooperates with the connecting groove 5. A sealing assembly is provided in the connecting groove 5, and the sealing assembly includes a sealing ring 7 and a driving mechanism. A mounting groove is provided in the connecting groove 5, and the sealing ring 7 is installed in the mounting groove. The inner ring wall of the sealing ring 7 abuts against the outer ring wall of the positioning ring 6. The driving assembly squeezes the sealing ring 7 when the fiberglass chimney is exhausting smoke, so that the sealing ring 7 fits more tightly with the groove wall of the mounting groove and the outer ring wall of the positioning ring 6.

[0025] In the above scheme, a sealing component is set up, which includes a sealing ring and a driving mechanism. The driving component squeezes the sealing ring when the fiberglass chimney is exhausting smoke, so that the sealing ring fits more tightly with the groove wall of the installation groove and the outer ring wall of the positioning ring, thereby effectively improving the sealing effect and preventing smoke from leaking from the connection when the chimney is exhausting smoke. At the same time, when the fiberglass chimney is not exhausting smoke, the sealing ring can be effectively relaxed to prevent the sealing ring from being in a large deformation state for a long time and failing.

[0026] As another embodiment of the invention, the drive mechanism includes a drive ring 4 and an extrusion ring 13, which are disposed within the connection groove 5. The lower end of the drive ring 4 abuts against the extrusion ring 13, and the upper end of the sealing ring 7 is provided with an extrusion groove 12 that cooperates with the extrusion ring 13. Specifically, the extrusion ring and the sealing groove cooperate in such a manner that the end surface of the extrusion ring 13 in contact with the extrusion groove 12 is V-shaped, and the extrusion groove 12 is a V-shaped groove that matches the shape of the extrusion ring 13.

[0027] In this embodiment, specifically, the driving ring 4 is made of titanium alloy memory material, and will undergo axial deformation after being subjected to temperature changes.

[0028] In the above scheme, when the fiberglass reinforced plastic chimney is emitting smoke, since the smoke is hot, the temperature of the smoke is quickly transferred to the drive ring. Since the drive ring 4 is made of titanium alloy memory material, the drive ring responds quickly to the temperature and undergoes axial deformation, driving the extrusion ring to move downward. The extrusion ring and the sealing groove move relative to each other, and the extrusion ring squeezes the extrusion groove, so that the two sides of the sealing ring expand outward, thereby fitting more tightly with the groove wall of the installation groove and the outer ring wall of the positioning ring 6, which can effectively prevent smoke from leaking from the connection when the chimney is emitting smoke. At the same time, when the fiberglass reinforced plastic chimney is not emitting smoke, the temperature around the drive ring returns to room temperature, the drive ring no longer undergoes axial deformation and returns to its original state, and the extrusion ring no longer squeezes the extrusion groove, so the sealing ring can be effectively relaxed, preventing the sealing ring from being in a large deformation state for a long time and failing. Those skilled in the art will appreciate that, in the above-described scheme, the technical solution of using an extrusion ring to squeeze the sealing groove only exerts an extrusion effect on the upper half of the sealing ring. (If the extrusion groove is designed to be too long, the larger the contact area between the extrusion ring and the groove, the greater the friction between the extrusion ring and the groove, which can easily cause damage to the extrusion groove during the extrusion process. Therefore, to reduce the contact area between the extrusion ring and the groove, the extrusion groove should not be designed to be too long. This protects the lower half of the sealing ring from the extrusion ring.) Therefore, as another embodiment of the invention, an air storage groove 10 is provided in the middle of the sealing ring 7, and expansion grooves 8 are provided on both sides of the edge of the sealing ring 7. The expansion grooves 8 are connected to the air outlet groove via a connecting hole. Furthermore, elastic support rings 11 are fixedly connected to both side walls of the air storage groove 10. The elastic support rings 11 are made of carbon spring steel sheets and are provided with vent holes that communicate with the connecting holes.

[0029] In the above scheme, during the downward relative movement of the extrusion ring and the sealing ring, the extrusion ring and the two side walls of the extrusion groove are always kept in close contact. Therefore, the relationship between the extrusion ring and the extrusion groove is equivalent to that between a piston and a piston cavity. The extrusion ring presses the air in the extrusion groove into the air storage tank and then into the expansion tank through the connecting groove. Since the expansion groove is arranged at the edge of the sealing ring, the expansion groove can easily expand and deform when the internal air pressure increases. After the expansion groove expands and deforms, the outer ring wall of the sealing ring close to the expansion groove and the installation groove and the inner ring wall of the sealing ring and the positioning ring can be more tightly fitted. Therefore, the above scheme can make the extrusion ring seal in the process of extruding the sealing ring. More places on the ring can undergo expansion and deformation, thereby further improving the sealing effect. Moreover, by installing an elastic support ring made of carbon spring steel sheets in the air outlet groove, on the one hand, the sealing ring can be provided with more elastic restoring force when it is compressed, thereby further improving the sealing effect. On the other hand, it can provide effective support for the sealing ring to prevent the sealing effect from being affected by insufficient support in the air storage tank. Moreover, since the air storage tank and the expansion tank are provided, the gas in the air storage tank and the expansion tank will expand after being heated, thereby driving the expansion tank to expand, thereby further making the outer ring wall of the sealing ring and the installation groove and the inner ring wall of the sealing ring and the positioning ring fit more tightly.

[0030] As another embodiment of the invention, the extrusion ring 13 is made of a hard material with a smooth surface.

[0031] It should be noted that a reasonable layer structure is the key to the quality and life of FRP. For this FRP chimney, due to the high performance requirements and long service life, in order to make this batch of equipment have better temperature resistance, corrosion resistance, leakage resistance, higher mechanical strength and longer aging resistance, the layer structure is divided into the following from the inside to the outside: inner surface corrosion-resistant layer, sub-inner surface corrosion-resistant layer, reinforcement layer and outer protective layer.

[0032] 1. Anti-corrosion layer and anti-seepage layer: Evenly apply vinyl resin with a certain proportion of curing agent and accelerator on the clean mold, and use polyester surface felt, glass fiber chopped mat, and glass fiber cloth to reinforce from the inside to the outside, and use a bubble roller to remove bubbles to make it bubble-free (the key to manufacturing FRP chimneys lies in the quality of the lining. If there are a lot of bubbles in the lining layer, and there is liquid at a certain temperature in the chimney, the bubbles will expand due to heat, destroying the internal anti-corrosion layer, and gradually leak out after a period of use. The composite structure of felt and cloth used avoids these defects, because chopped mat and glass fiber woven cloth are products treated with coupling agents, and the resin permeability is very good. The bubbles are then expelled with a bubble roller to form a dense whole, thereby playing a role in corrosion resistance and leakage resistance).

[0033] 2. The use of felt-cloth composite structure makes the bonding between chopped strands of felt and glass fiber woven cloth tighter. The resulting product is both corrosion-resistant and leak-proof, and also improves the strength of the anti-corrosion layer of the FRP chimney.

[0034] 3. Reinforcement layer (winding): Alkali-free winding yarn is used throughout. This yarn has a low resin content and high strength (when the glass fiber is fully impregnated, the strength of the FRP is inversely proportional to the resin content). After the lining is cured, the designed parameters are input into the microcomputer, which controls the reciprocating winding of the glass fiber winding yarn until the desired winding layer thickness is achieved.

[0035] 4. Reinforcement layer (hand lay-up): Use glass fiber cloth to lay in a certain direction, angle and proportion to ensure that the shear resistance, compression resistance and force of each main surface of the equipment can reach the best.

[0036] 5. Weather-resistant layer: The surface is covered with polyester film to isolate it from the air and solidify it to form a dense and uniform resin protective layer.

[0037] The technical advantages of FRP chimneys mainly include the following aspects: Corrosion resistance: FRP chimneys are made of glass fiber reinforced plastic (GFRP), which has excellent corrosion resistance. The resin is epoxy vinyl resin. It can resist the erosion of various corrosive gases, such as sulfuric acid and other strong corrosive chemicals, and will not be damaged in long-term use.

[0038] Lightweight and High-Strength: Fiberglass is lightweight, making it easier to transport and install than other metal products, while also offering lower overall installation costs. Mechanically wound, it boasts a high specific strength, meeting the mechanical performance requirements of chimneys.

[0039] Low maintenance cost: The maintenance cost of FRP chimney is low, the maintenance cycle is long, and it can withstand high temperatures. The thermal deformation temperature of vinyl resin reaches 105°C.

[0040] Design flexibility: FRP has a variety of materials and flexible molding processes, and can be customized according to different usage conditions, including raw material selection, manufacturing process and installation method.

[0041] Easy installation: FRP material has low density, light weight, easy installation and short construction period, which usually shortens the construction period by nearly half compared with traditional chimney making methods.

[0042] Long service life: Due to the excellent corrosion resistance and high temperature resistance of FRP chimneys, their service life is long, reducing the frequency of replacement and maintenance.

[0043] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A glass fiber reinforced plastic chimney sealing structure, comprising an upper connecting section (1) and a lower connecting section (3), characterized in that: The lower end of the upper connecting section (1) is integrally provided with a connecting ring (2), the inner wall of the connecting ring (2) is provided with a connecting groove (5), and the upper end of the lower connecting section (3) is provided with a positioning ring (6) that cooperates with the connecting groove (5); A sealing assembly is provided in the connecting groove (5), and the sealing assembly includes a sealing ring (7) and a driving mechanism. A mounting groove is provided in the connecting groove (5), and the sealing ring (7) is installed in the mounting groove. The inner ring wall of the sealing ring (7) abuts against the outer ring wall of the positioning ring (6). When the glass fiber reinforced plastic chimney is exhausting smoke, the driving assembly squeezes the sealing ring (7) so that the sealing ring (7) fits more tightly with the groove wall of the mounting groove and the outer ring wall of the positioning ring (6).

2. The glass fiber reinforced plastic chimney sealing structure according to claim 1, characterized in that: The driving mechanism comprises a driving ring (4) and an extrusion ring (13), wherein the driving ring (4) and the extrusion ring (13) are arranged in a connecting groove (5), the lower end of the driving ring (4) abuts against the extrusion ring (13), and the upper end of the sealing ring (7) is provided with an extrusion groove (12) that cooperates with the extrusion ring (13).

3. The glass fiber reinforced plastic chimney sealing structure according to claim 2, characterized in that: The end surface of the extrusion ring (13) in contact with the extrusion groove (12) is V-shaped, and the extrusion groove (12) is a V-shaped groove that matches the shape of the extrusion ring (13).

4. The glass fiber reinforced plastic chimney sealing structure according to claim 2, characterized in that: The drive ring (4) is made of a titanium alloy memory material and will undergo axial deformation when subjected to temperature changes.

5. The glass fiber reinforced plastic chimney sealing structure according to claim 4, characterized in that: An air storage groove (10) is provided in the middle of the sealing ring (7), and expansion grooves (8) are provided inside the edge positions on both sides of the sealing ring (7). The expansion grooves (8) are connected to the air outlet groove through a connecting hole.

6. The glass fiber reinforced plastic chimney sealing structure according to claim 5, characterized in that: Elastic support rings (11) are fixedly connected to both side walls of the gas storage tank (10).

7. The glass fiber reinforced plastic chimney sealing structure according to claim 6, characterized in that: The elastic support ring (11) is made of carbon spring steel sheet.

8. The glass fiber reinforced plastic chimney sealing structure according to claim 7, characterized in that: The elastic support ring (11) is provided with a vent hole connected to the communication hole.

9. The glass fiber reinforced plastic chimney sealing structure according to claim 2, characterized in that: The extrusion ring (13) is made of a hard material with a smooth surface.

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