CN111075998A - Continuous fiber prepreg tape reinforced pipe end flanging piece and using method thereof - Google Patents

Continuous fiber prepreg tape reinforced pipe end flanging piece and using method thereof Download PDF

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Publication number
CN111075998A
CN111075998A CN201911353620.2A CN201911353620A CN111075998A CN 111075998 A CN111075998 A CN 111075998A CN 201911353620 A CN201911353620 A CN 201911353620A CN 111075998 A CN111075998 A CN 111075998A
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CN
China
Prior art keywords
flanging
continuous fiber
fiber prepreg
prepreg tape
pipe
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Pending
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CN201911353620.2A
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Chinese (zh)
Inventor
林世平
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Shanghai Yingtai Plastic Ltd By Share Ltd
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Shanghai Yingtai Plastic Ltd By Share Ltd
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Priority to CN201911353620.2A priority Critical patent/CN111075998A/en
Publication of CN111075998A publication Critical patent/CN111075998A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/14Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/02Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02Welded joints; Adhesive joints

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention discloses a continuous fiber prepreg tape reinforced pipe end flanging piece and a using method thereof, wherein the continuous fiber prepreg tape reinforced pipe end flanging piece comprises a connecting pipe which is integrally formed and a flanging baffle head arranged at the end part of the connecting pipe; the continuous fiber prepreg tape reinforced pipe end flanging piece is sequentially provided with a plastic protective layer, a fiber reinforced layer and a plastic sealing layer from outside to inside. And the pipe end flanging piece is reinforced by the continuous fiber prepreg tape: the end faces of the flanging baffle heads are in hot melt butt joint or are connected through split bolts; connection with plastic pipe: the flanging baffle head is in hot melt butt joint with the end face of the plastic pipe fitting or is connected with the end face of the plastic pipe fitting through a split bolt; connection with metal pipe fittings: the metal pipe fitting is connected with the flanging baffle head through a split bolt; the connection method with the high-pressure pipeline comprises the following steps: the high-pressure pipeline is connected inside the thickened plastic sealing layer through socket hot melting or electric melting. The continuous fiber prepreg tape reinforced pipe end flanging piece has the advantages of simple and convenient technology, cost saving in manufacturing and installation, various using methods and easiness in operation.

Description

Continuous fiber prepreg tape reinforced pipe end flanging piece and using method thereof
Technical Field
The invention relates to the field of pipes and pipe fittings reinforced by continuous fiber prepreg tapes, in particular to a pipe end flanging part reinforced by a continuous fiber prepreg tape and a using method thereof.
Background
The continuous fiber reinforced thermoplastic pipeline system has the advantages of high pressure resistance, corrosion resistance, high heat resistance, long service life, light weight, convenience and the like, and is widely applied to industries such as oil field gathering pipelines, industrial and chemical pipelines, prize body and powder conveying pipelines, hot water pipelines, water supply pipelines and the like.
The continuous fiber reinforced thermoplastic pipeline system belongs to non-metal pipeline system, and the connection between the present non-metal pipeline system and metal pipeline and metal valve body is made by adopting the process of connecting non-metal injection-moulded flange piece with external sealing ring and split bolt together with metal flange after hot melting or electric melting at pipe end position.
The external non-metal injection molding flange piece is hot-melted or fused at the pipe end part, the required molds are more, the injection molding process is complex, and injection molding machines with different sizes are required, so the investment cost is high, and the efficiency is low; and secondly, the fiber reinforced layer at the end of the pipe is subjected to special treatment and then is subjected to secondary hot melting or electric melting with the pipe end of the injection molding flange piece, so that the defects of complex installation process, complex flow, high overall cost and the like are overcome.
Disclosure of Invention
The invention aims to provide a continuous fiber prepreg tape reinforced pipe end flanging piece and a using method thereof, and solves the problems of high manufacturing and mounting cost, complex process and the like.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a continuous fiber prepreg tape enhanced pipe end flanging piece and a using method thereof, wherein the continuous fiber prepreg tape enhanced pipe end flanging piece comprises an integrally formed connecting pipe and a flanging baffle arranged at the end part of the connecting pipe; the continuous fiber prepreg tape reinforced pipe end flanging piece is sequentially provided with a plastic protective layer, a fiber reinforced layer and a plastic sealing layer from outside to inside;
the connecting method of the two continuous fiber prepreg tape reinforced pipe end flanging pieces comprises the following steps:
firstly, the end faces of the flanging baffle heads are in hot-melt butt joint to form a hot-melt layer;
secondly, end faces of the two flanging blocking heads are in hot melting butt joint to form a hot melting layer, and on the basis, after metal flange plates are sleeved outside the outer end faces of the two flanging blocking heads, the two flanging blocking heads are connected together through split bolts;
the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging piece and the plastic pipe fitting comprises the following steps:
firstly, the flanging baffle head is in hot-melt butt joint with the end face of the pipe fitting port of the plastic pipe fitting to form a hot-melt layer;
secondly, the flanging baffle head is in hot-melt butt joint with the pipe fitting port to form a hot-melt layer, and on the basis, the end face of the flanging baffle head is connected with the pipe fitting port through a split bolt;
the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging piece and the metal pipe fitting comprises the following steps: a metal flange plate is welded on one side, far away from the end, of the end part of the metal pipe fitting, a baffle plate is arranged on one side, far away from the end face, of the flanging baffle head, and the metal flange plate and the baffle plate are connected together through a split bolt;
the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging piece and the high-pressure pipeline comprises the following steps: the high-pressure pipeline comprises an inner layer and an outer layer, the length of the inner layer is greater than that of the outer layer, the high-pressure pipeline is connected inside a thickened plastic sealing layer through socket hot melting or electric melting, and the thickened plastic sealing layer is provided with an upper step socket and a lower step socket which are matched with the high-pressure pipeline.
Furthermore, a concave water stop ring is arranged on the flanging baffle head.
Furthermore, a sealing ring is arranged between the end head of the metal pipe fitting and the flanging blocking head.
Furthermore, an intermediate reinforcing layer is arranged between the inner layer and the outer layer.
Further, the pressure in the high-pressure pipeline is more than 2.0 MPa.
Compared with the prior art, the invention has the beneficial technical effects that:
according to the continuous fiber prepreg tape reinforced pipe end flanging piece and the using method thereof, the pipe end of the continuous fiber prepreg tape reinforced pipe end flanging piece is directly flanged and is integrated with the connecting pipe, so that the welding process and the procedure of a secondary flanging and flanging baffle head are omitted, the product quality is improved, and the equipment investment and the labor cost of the welding process are saved. In addition, in the use process, after the continuous fiber prepreg tape reinforced thermoplastic pipe end is heated, the pipe end is directly flanged through mould pressing extrusion to manufacture the flanging baffle head, so that the manufacturing process can be saved, the pipe end can be manufactured on the installation site, and the technology is simple and convenient. The continuous fiber prepreg tape enhances the connection process of the pipe end flanging piece, the plastic pipe fitting, the metal pipe fitting, the high-pressure pipeline and the continuous fiber prepreg tape, has simple process and good sealing property, and is worth being widely popularized and used. In a word, the continuous fiber prepreg tape reinforced pipe end flanging piece is simple and convenient in technology, cost-saving in manufacturing and installation, multiple in use method and easy to operate.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic view of a continuous fiber prepreg tape reinforced tube end flange of the present invention;
FIG. 2 is a cross-sectional view of a continuous fiber prepreg tape reinforced tube end flange of the present invention;
FIG. 3 shows a first method for connecting two continuous fiber prepreg tape reinforced tube end flanging parts according to the present invention;
FIG. 4 shows a second method for connecting two continuous fiber prepreg tape reinforced tube end flanging parts according to the present invention;
FIG. 5 shows a first method for connecting the continuous fiber prepreg tape reinforced pipe end flanging part and the plastic pipe fitting;
FIG. 6 shows a second method for connecting the continuous fiber prepreg tape reinforced pipe end flanging part and the plastic pipe fitting;
FIG. 7 illustrates a method of joining a continuous fiber prepreg tape reinforced tube end flanging part to a metal tube part according to the present invention;
FIG. 8 illustrates a method of connecting the continuous fiber prepreg tape reinforced tube end flanging part to a high pressure pipeline according to the present invention;
description of reference numerals: 1. a connecting pipe; 2. a flanging stop head; 3. a plastic protective layer; 4. a fiber-reinforced layer; 5. a plastic sealing layer; 6. a hot melt layer; 7. a seal ring; 8. oppositely pulling the bolts; 9. a plastic pipe; 10. a tubing port; 11. a metal pipe fitting; 12. a metal flange plate; 13. a high pressure pipeline; 14. an inner layer; 15. an outer layer; 16. a middle reinforcing layer; 17. and a baffle plate.
Detailed Description
As shown in fig. 1-2, a continuous fiber prepreg reinforced pipe end flanging piece and a using method thereof are provided, wherein the continuous fiber prepreg reinforced pipe end flanging piece comprises a connecting pipe 1 and a flanging baffle head 2, wherein the connecting pipe 1 is integrally formed, and the flanging baffle head is positioned at the end part of the connecting pipe 1. The turn-ups keeps off and has seted up the indent seal circle on the head 2 for the pipeline connection sealing washer. The continuous fiber prepreg tape reinforced pipe end flanging piece is sequentially provided with a plastic protective layer 3, a fiber reinforced layer 4 and a plastic sealing layer 5 from outside to inside, wherein the thickness of the plastic sealing layer 5 can be adjusted according to actual requirements, and when the continuous fiber prepreg tape reinforced pipe end flanging piece is used in a pipeline with the pressure of below 1.6MPa, the pipe end flanging blocking heads are in hot-melt butt joint for use; if the high-pressure pipeline 13 with the pressure of more than or equal to 2.0MPa is connected, the plastic sealing layer 5 needs to be thickened, the other end of the plastic sealing layer is made into an inward concave upper step and an inward concave lower step, and the pipe ends of the outer high-pressure pipeline 13 are in hot melting socket connection.
As shown in fig. 3-4, the method for connecting two of the continuous fiber prepreg tape reinforced pipe end hems comprises; two specific examples:
firstly, the end faces of the flanging baffle heads 2 are in hot-melt butt joint, namely after the end faces of the flanging baffle heads 2 of the two continuous fiber prepreg tapes for reinforcing the pipe end flanging piece are heated to a (liquid state) melting point, a hot-melt layer 6 is formed, so that the two pipes are connected together. It should be noted that in order to ensure the quality of the connection, the heating time and temperature need to be strictly controlled during the heating process, and the continuous fiber prepreg tape reinforcing pipe end hemmer cannot be rotated during the welding process. And after hot melting and butt joint, the mixture is naturally cooled and formed under the pressure of 2 MPa. The flanging baffle head 2 can be used for direct end surface hot melt butt joint of flanging of the pipe end in an installation field, or used for end surface hot melt butt joint in the installation field after the pipe end is flanged in a factory, and the specific use mode is selected according to actual requirements.
Secondly, the end faces of the two flanging blocking heads 2 are in hot melting butt joint to form a hot melting layer 6, and on the basis, after metal flange plates 12 are sleeved outside the end faces of the outer sides of the flanging blocking heads, the flanging blocking heads are connected together through split bolts 8, so that the compression strength of a hot melting interface is improved. The split bolt 8 mainly comprises a bolt and a nut, and in order to guarantee the connection strength, the flanging baffle head 2 needs to be provided with a matched bolt hole.
As shown in fig. 5 to 6, there are two specific examples of the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging part and the plastic pipe fitting 9, which are specifically described as follows:
firstly, the end faces of the flange stopper 2 and the pipe end port 10 of the plastic pipe 9 are in hot melting butt joint to form a hot melting layer 6, and the connection mode in the process is consistent with that of the two continuous fiber prepreg tape reinforced pipe end flange pieces, and redundant description is omitted here.
In the second mode, the flanging baffle head 2 is in hot-melt butt joint with the pipe fitting port 10 to form a hot-melt layer 6, on the basis, the end face of the flanging baffle head is connected with the pipe fitting port 10 through a split bolt 8, and the split bolt 8 adopts the same type and installation mode as the above.
As shown in fig. 7, the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging part and the metal pipe fitting 11 comprises the following steps: the metal pipe fitting is characterized in that a metal flange plate 12 is welded on one side, far away from the end, of the end part of the metal pipe fitting 11, a movable baffle plate 17 is installed on one side, far away from the end face, of the flanging baffle head 2, and the movable baffle plate 17 is specifically a movable metal flange plate. The metal flange plate 12 and the baffle plate 17 are connected together through split bolts 8. Meanwhile, a sealing ring 7 is arranged between the end face of the flanging baffle 2 of the continuous fiber prepreg tape reinforced pipe end flanging piece and the end face of the metal pipe fitting 11. The metal flange plate 12 and the baffle plate 17 are provided with bolt holes matched with the split bolts 8.
As shown in fig. 8, the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging piece and the high-pressure pipeline 13 comprises the following steps: high-pressure pipeline 13 includes inlayer 14 and skin 15, inlayer 14 length is greater than skin 15, it has middle enhancement layer 16 to fuse between inlayer 14 and the skin 15, and the length of middle enhancement layer 16 is unanimous with inlayer 14 length, is the notch cuttype structure between inlayer 14 and the skin 15. High-pressure pipeline 13 passes through socket joint hot melt or electric smelting and connects inside thickened plastic sealing layer 5, thickens set up on the plastic sealing layer 5 with high-pressure pipeline 13 matched with step bellmouth from top to bottom.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (5)

1. A continuous fiber prepreg tape reinforced pipe end flanging piece and a using method thereof are characterized in that: the continuous fiber prepreg tape reinforced pipe end flanging piece comprises a connecting pipe (1) and a flanging baffle head (2), wherein the connecting pipe (1) is integrally formed, and the flanging baffle head is arranged at the end part of the connecting pipe (1); the continuous fiber prepreg tape reinforced pipe end flanging piece is sequentially provided with a plastic protective layer (3), a fiber reinforced layer (4) and a plastic sealing layer (5) from outside to inside;
the connecting method of the two continuous fiber prepreg tape reinforced pipe end flanging pieces comprises the following steps:
firstly, the end faces of the flanging baffle heads (2) are in hot melting butt joint to form a hot melting layer (6);
secondly, end faces of the two flanging blocking heads (2) are in hot melting butt joint to form a hot melting layer (6), and on the basis, after metal flange plates (12) are sleeved outside the outer side end faces of the two flanging blocking heads (2), the two flanging blocking heads are connected together through split bolts (8);
the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging piece and the plastic pipe fitting (9) comprises the following steps:
firstly, the flanging baffle head (2) is in hot melt butt joint with the end face of a pipe fitting port (10) of the plastic pipe fitting (9) to form a hot melt layer (6);
secondly, the flanging baffle head (2) is in hot-melt butt joint with the pipe fitting port (10) to form a hot-melt layer (6), and on the basis, the end face of the flanging baffle head (2) is connected with the pipe fitting port (10) through a split bolt (8);
the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging piece and the metal pipe fitting (11) comprises the following steps: a metal flange (12) is welded on one side, far away from the end, of the end part of the metal pipe fitting (11), a baffle (17) is arranged on one side, far away from the end face, of the flanging baffle head (2), and the metal flange (12) and the baffle (17) are connected together through split bolts (8);
the method for connecting the continuous fiber prepreg tape reinforced pipe end flanging piece and the high-pressure pipeline (13) comprises the following steps: high-pressure pipeline (13) include inlayer (14) and outer (15), inlayer (14) length is greater than outer (15), high-pressure pipeline (13) are connected inside plastic sealing layer (5) of thickening through socket joint hot melt or electric smelting, the thickening seted up on plastic sealing layer (5) with high-pressure pipeline (13) matched with is from top to bottom the step bellmouth.
2. The continuous fiber prepreg tape reinforced tube end flange piece and the method of using the same according to claim 1, wherein: the turn-ups dog (2) is provided with a concave water stop ring.
3. The continuous fiber prepreg tape reinforced tube end flange piece and the method of using the same according to claim 1, wherein: and a sealing ring (7) is arranged between the end of the metal pipe fitting (11) and the flanging baffle head (2).
4. The continuous fiber prepreg tape reinforced tube end flange piece and the method of using the same according to claim 1, wherein: an intermediate reinforcing layer (16) is arranged between the inner layer (14) and the outer layer (15).
5. The continuous fiber prepreg tape reinforced tube end flange piece and the method of using the same according to claim 1, wherein: the pressure in the high-pressure pipeline (13) is more than 2.0 MPa.
CN201911353620.2A 2019-12-25 2019-12-25 Continuous fiber prepreg tape reinforced pipe end flanging piece and using method thereof Pending CN111075998A (en)

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CN201911353620.2A CN111075998A (en) 2019-12-25 2019-12-25 Continuous fiber prepreg tape reinforced pipe end flanging piece and using method thereof

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Application Number Priority Date Filing Date Title
CN201911353620.2A CN111075998A (en) 2019-12-25 2019-12-25 Continuous fiber prepreg tape reinforced pipe end flanging piece and using method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114294485A (en) * 2021-12-28 2022-04-08 四川金元管业有限公司 A continuous basalt fiber tube and processing device

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Application publication date: 20200428

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