Glass reinforced plastic pipe expansion joint

Abstract

The utility model relates to a kind of glass steel pipeline expansion joints, including two glass steel end pipes and glass steel bellows, the two ends of the glass steel bellows are mutually inserted with two glass steel end pipes, the glass steel end pipe includes inner tube section, positioning disc and outer tube section, the positioning disc is fixedly connected in the middle section of inner tube section outer wall, the outer tube section is set on the outside of inner tube section, and the end of outer tube section towards positioning disc is fixedly connected between positioning disc. Compared with traditional metal expansion joint, the glass steel pipeline expansion joint can improve the service life during the use of conveying corrosive medium by the cooperation of glass steel end pipe and glass steel bellows. By inserting the straight pipe section at both ends of the glass steel bellows into the insertion slot of the glass steel end pipe and filling the insertion slot with epoxy resin colloid to form a filling layer, the connection between the glass steel bellows and the glass steel end pipe can be more secure, and leakage during use can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, specifically to a fiberglass pipe expansion joint. Background Technology

[0002] In pipeline transportation systems, expansion joints, as compensating elements, can effectively absorb the thermal expansion and contraction deformation of pipelines caused by factors such as temperature changes and medium pressure fluctuations, and compensate for the axial, lateral and angular displacement of pipelines, thereby avoiding safety accidents such as pipeline rupture and leakage due to excessive stress concentration.

[0003] Traditional pipe expansion joints are mostly made of metal. Although metal expansion joints have high strength and good pressure resistance, they are easily corroded by chemicals in corrosive environments such as chemical plants and marine environments. In addition, metal expansion joints are heavy and inconvenient to install and transport. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This utility model provides a fiberglass pipe expansion joint that solves the problems of traditional metal expansion joints being susceptible to corrosion by chemical substances, as well as the large weight of metal expansion joints and the inconvenience of installation and transportation.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fiberglass pipe expansion joint, comprising two fiberglass end pipes and a fiberglass corrugated pipe. The two ends of the fiberglass corrugated pipe are respectively inserted into the two fiberglass end pipes. Each fiberglass end pipe includes an inner pipe section, a positioning plate, and an outer pipe section. The positioning plate is fixedly connected to the middle section of the outer wall of the inner pipe section. The outer pipe section is sleeved on the outside of the inner pipe section, and the end of the outer pipe section facing the positioning plate is fixedly connected to the positioning plate. A slot is formed between the inner and outer pipe sections. The fiberglass corrugated pipe includes a corrugated section and two straight pipe sections. The two straight pipe sections are respectively formed at opposite ends of the corrugated section, and each straight pipe section is inserted into an adjacent slot. The slot is also filled with an adhesive that bonds and fixes the ends of the fiberglass corrugated pipe to the fiberglass end pipe. After the adhesive cures, it forms a filling layer.

[0008] Preferably, the inner tube section and the positioning plate have their end faces facing the other fiberglass end tube section flush with each other, and the inner tube section and the positioning plate are coaxially distributed.

[0009] In a further preferred embodiment, the width of the slot is greater than the wall thickness of the straight pipe section, and the length of the straight pipe section is less than the depth of the slot.

[0010] In a further preferred embodiment, the filling layer is formed by curing epoxy resin colloid, and the filling layer fills the gap between the inner wall of the slot and the straight pipe section.

[0011] In a further preferred embodiment, at least one positioning hole is formed on the positioning disk, and several positioning holes in the two fiberglass end tubes are coaxially distributed in pairs.

[0012] In a further preferred embodiment, the fiberglass pipe expansion joint also includes at least one double-ended screw and four times the number of nuts as the double-ended screw, with each end of the double-ended screw passing through an adjacent positioning hole, and each end of the double-ended screw being fitted with two nuts threaded to it and separated by the positioning holes.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a fiberglass pipe expansion joint, which has the following beneficial effects:

[0015] In this invention, the combination of fiberglass end pipes and fiberglass corrugated pipes improves the service life of the fiberglass pipe expansion joint compared to traditional metal expansion joints when transporting corrosive media. By inserting the straight pipe sections at both ends of the fiberglass corrugated pipe into the slots of the fiberglass end pipes and filling the slots with epoxy resin to form a filling layer, the connection between the fiberglass corrugated pipes and the fiberglass end pipes is more secure and leakage can be prevented during use. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a fiberglass pipe expansion joint according to the implementation plan;

[0017] Figure 2 This is a schematic diagram of the fiberglass end tube and fiberglass corrugated tube after being cut open according to the implementation plan;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of the fiberglass end tube cut in half.

[0019] In the diagram: 10, FRP end tube; 11, inner tube section; 12, positioning plate; 13, outer tube section; 14, slot; 15, positioning hole; 20, FRP corrugated pipe; 21, corrugated section; 22, straight tube section; 30, double-ended screw; 40, nut; 50, filler layer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 A fiberglass pipe expansion joint includes two fiberglass end pipes 10 and a fiberglass corrugated pipe 20. The fiberglass end pipe 10 includes an inner pipe section 11, a positioning plate 12, and an outer pipe section 13. The fiberglass corrugated pipe 20 includes a corrugated section 21 and two straight pipe sections 22. The positioning plate 12 in the fiberglass end pipe 10 is fixedly connected to the middle section of the outer wall of the inner pipe section 11. The outer pipe section 13 is sleeved on the outside of the inner pipe section 11, and one end of the outer pipe section 13 facing the positioning plate 12 is fixedly connected to the positioning plate 12. The gap between the inner pipe section 11 and the outer pipe section 13 forms a slot 14. The two straight pipe sections 22 in the fiberglass corrugated pipe 20 are respectively formed at opposite ends of the corrugated section 21, and each straight pipe section 22 is inserted into the slot 14 of the adjacent fiberglass end pipe 10. After assembly, epoxy resin can be injected into the slot 14 through the two fiberglass end tubes 10 and the fiberglass corrugated pipe 20, so that the ends of the two fiberglass end tubes 10 and the fiberglass corrugated pipe 20 can be connected to each other as a whole. After the epoxy resin has cured, it can fill the gap between the inner wall of the slot 14 and the straight pipe section 22, and form a filling layer 50.

[0022] In this embodiment, the inner tube segment 11 and the positioning plate 12 are coaxially distributed, and the end faces of the inner tube segment 11 and the positioning plate 12 facing the other fiberglass end tube 10 are flush with each other, so that the opening end of the slot 14 is flat and the internal gap of the slot 14 is uniform. The width of the slot 14 is greater than the wall thickness of the straight tube segment 22, and the length of the straight tube segment 22 is less than the depth of the slot 14, so that the straight tube segment 22 can be smoothly inserted into the slot 14, and epoxy resin can be injected into the gap between them.

[0023] In this embodiment, at least one positioning hole 15 is formed on the positioning disk 12, and several positioning holes 15 in the two fiberglass end tubes 10 are coaxially distributed in pairs. After the two fiberglass end tubes 10 and the fiberglass corrugated pipe 20 are combined, at least one double-ended screw 30 can be used to pass through the adjacent positioning holes 15 at both ends, and two nuts 40 can be threaded onto both ends of the double-ended screw 30. The two nuts 40 at the ends of the double-ended screw 30 are separated by the positioning holes 15, and the two nuts 40 can clamp the positioning disk 12 after being tightened. When using the double-ended screw 30 and nuts 40 to assist in fixing the fiberglass end tubes 10, corrosive media can be transported inside the expansion joint as much as possible, and the outside of the expansion joint should be kept away from corrosive media.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiberglass pipe expansion joint, comprising two fiberglass end pipes (10) and a fiberglass corrugated pipe (20), characterized in that, The two ends of the fiberglass corrugated pipe (20) are respectively inserted into two fiberglass end pipes (10). The fiberglass end tube (10) includes an inner tube section (11), a positioning plate (12), and an outer tube section (13). The positioning plate (12) is fixedly connected to the middle section of the outer wall of the inner tube section (11). The outer tube section (13) is sleeved on the outside of the inner tube section (11), and the end of the outer tube section (13) facing the positioning plate (12) is fixedly connected to the positioning plate (12). A slot (14) is formed between the inner tube section (11) and the outer tube section (13). The fiberglass corrugated pipe (20) includes a corrugated section (21) and two straight pipe sections (22). The two straight pipe sections (22) are formed at opposite ends of the corrugated section (21), and each straight pipe section (22) is inserted into an adjacent slot (14). The slot (14) is also filled with an adhesive that bonds and fixes the end of the fiberglass corrugated pipe (20) to the fiberglass end pipe (10). After the adhesive is cured, it forms a filling layer (50).

2. The fiberglass pipe expansion joint according to claim 1, characterized in that: The inner tube section (11) and the positioning plate (12) are flush with each other on the end faces of the other fiberglass end tube (10), and the inner tube section (11) and the positioning plate (12) are coaxially distributed.

3. The fiberglass pipe expansion joint according to claim 2, characterized in that: The width of the slot (14) is greater than the wall thickness of the straight pipe section (22), and the length of the straight pipe section (22) is less than the depth of the slot (14).

4. The fiberglass pipe expansion joint according to claim 3, characterized in that: The filling layer (50) is formed by curing epoxy resin colloid and fills the gap between the inner wall of the slot (14) and the straight pipe section (22).

5. A fiberglass pipe expansion joint according to any one of claims 1-4, characterized in that: At least one positioning hole (15) is formed on the positioning disk (12) through the positioning disk (12), and several positioning holes (15) in the two fiberglass end tubes (10) are coaxially distributed in pairs.

6. The fiberglass pipe expansion joint according to claim 5, characterized in that: It also includes at least one double-ended screw (30) and four times the number of nuts (40) of the double-ended screw (30), with each end of the double-ended screw (30) passing through an adjacent positioning hole (15), and each end of the double-ended screw (30) being fitted with two nuts (40) threaded to it and separated by the positioning hole (15).

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