CN212194458U

CN212194458U - FRP pipeline

Info

Publication number: CN212194458U
Application number: CN202020452731.0U
Authority: CN
Inventors: 唐明军
Original assignee: Guangdong Ren Da Intelligent Equipment Co ltd
Current assignee: Guangdong Ren Da Intelligent Equipment Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-12-22
Anticipated expiration: 2030-04-01

Abstract

The utility model relates to the technical field of pipelines, and discloses an FRP pipeline, which comprises an inner layer weaving layer, a middle layer longitudinal yarn and an outer layer weaving layer, wherein the inner layer weaving layer is formed by weaving reinforcing fiber yarns in a staggered manner; the middle layer longitudinal yarn is arranged along the axial direction of the inner layer weaving layer by adopting reinforced fiber yarn; the outer layer weaving layer is formed by interlacing weaving reinforced fiber yarns on the circumferential surface of the middle layer longitudinal yarns. The utility model provides a glass steel pipeline that vertical tensile strength and radial resistance to compression are good.

Description

FRP pipeline

Technical Field

The utility model relates to the technical field of pipelines, indicate a fiber reinforced composite's pipeline especially.

Background

For a long time, most of conveying pipelines are made of metal materials or plastic materials, and the conveying pipelines have the defects of easy corrosion or short service life, so that the defects of high maintenance cost and inconvenient maintenance of equipment are caused. However, the novel fiber reinforced composite material pipeline is a light, high-strength and corrosion-resistant nonmetal pipeline, is widely applied to the industrial fields of power transmission, chemistry, communication, water conservancy and the like, and has good mechanical properties along with the improvement of production equipment.

For example, CN210034668U discloses a plastic pipe with inner and outer reinforced layers of glass fiber reinforced plastic, which comprises a pipe base, an outer reinforced layer of wound and woven glass fiber reinforced plastic, an inner reinforced layer of wound and woven glass fiber reinforced plastic, an outer adhesive layer, and an inner adhesive layer, and is characterized in that: the plastic pipeline with the glass fiber reinforced plastic inner and outer reinforcing layers is characterized in that the pipeline structure comprises a winding and weaving glass fiber reinforced plastic outer reinforcing layer and a winding and weaving glass fiber reinforced plastic inner reinforcing layer from the outer wall to the inner wall.

In some special application environments, the pipeline is required to have good radial strength and longitudinal tensile strength, but the pipeline has low longitudinal strength and cannot be applied to working environments requiring high radial strength and high longitudinal tensile strength, so that a corresponding structural design for enhancing the radial strength and the longitudinal tensile strength is required to be designed in the pipeline.

Disclosure of Invention

In order to solve the above problem, the utility model provides a FRP pipeline, its main objective is through addding the vertical yarn in middle level, strengthens the radial strength and the vertical tensile strength of pipeline by the vertical yarn in middle level.

In order to achieve the above object, the utility model adopts the following technical scheme:

an FRP pipeline comprises an inner woven layer, a middle longitudinal yarn and an outer woven layer from inside to outside, wherein the inner woven layer is formed by interweaving reinforcing fiber yarns; the middle layer longitudinal yarn is axially arranged along the circumferential surface of the inner layer weaving layer by adopting reinforced fiber yarn; the outer weaving layer is formed by weaving reinforcing fiber yarns on the circumferential surface of the middle longitudinal yarn in a staggered mode.

Furthermore, the knitting angle of the reinforcing fiber yarn of the inner knitting layer is 18-80 degrees.

Furthermore, the knitting angle of the reinforced fiber yarn of the outer knitting layer is 18-80 degrees.

Further, the reinforced fiber yarn material is glass fiber, carbon fiber, aramid fiber or basalt fiber.

Further, the thickness of the inner weaving layer, the middle longitudinal yarn and the outer weaving layer of the reinforced fiber is larger than 0.1 mm.

The utility model discloses an add the vertical yarn in middle level, improve the radial strength and the vertical tensile strength of pipeline by the vertical yarn in middle level, simultaneously, through three layer construction's setting, greatly reduced the weight of product, simplified structural design to reduction in production cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numbers illustrate: 1. an inner braid layer; 2. middle layer longitudinal yarn; 3. and an outer braided layer.

Detailed Description

Please refer to fig. 1, which is a FRP pipeline implemented by the present invention, the FRP pipeline includes an inner layer woven layer 1, a middle layer longitudinal yarn 2 and an outer layer woven layer 3 from inside to outside, the inner layer woven layer 1 is formed by interlacing and weaving reinforcing fiber yarns; the middle layer longitudinal yarn 2 is axially arranged along the circumferential surface of the inner layer weaving layer 1 by adopting reinforced fiber yarns; the outer weaving layer 3 is formed by weaving reinforcing fiber yarns on the circumferential surface of the longitudinal yarns of the middle layer 2 in a staggered mode.

The FRP pipeline is a pipe made of fiber reinforced composite materials, when the inner weaving layer 1 is prepared, the mould core with preset size is arranged on the horizontal braiding machine, the mould core is braided in a staggered way in the circumferential direction to form the inner weaving layer 1, and the inner weaving layer 1 has the radial compressive strength for reinforcing the pipeline; after the inner woven layer 1 is prepared, a longitudinal yarn guide device is adopted to paste the reinforced fiber yarn in parallel to the axial direction of the inner woven layer 1, and the layer mainly enhances the longitudinal tensile strength and the radial compressive strength of the pipeline; after preparing the middle layer longitudinal yarn 2, performing annular staggered weaving forming on the formed inner layer weaving layer 1 and the middle layer longitudinal yarn 2 by adopting a horizontal weaving machine, wrapping the middle layer longitudinal yarn 2, completing the preparation of the three-layer structure, transferring the prepared three-layer structure into a weaving pultrusion mould by a traction machine, injecting matrix resin into the mould (or soaking the matrix resin in an outer-membrane impregnation way before a reinforced fiber material enters the mould), requiring the matrix resin to be fully soaked with each layer, then heating the mould, fully extruding and molding the mixture of the matrix resin and each layer, heating and curing the mixture, and then pulling out the mixture from the mould by the traction machine to obtain the FRP pipeline finished product with excellent longitudinal tensile strength and radial compressive strength, fine weaving texture and smooth inner and outer surfaces. The matrix resin is: thermosetting resins such as unsaturated resins, epoxy resins, and polyurethanes.

In the process of preparing the inner-layer braided layer by the horizontal braiding machine, the braiding angle of the reinforced fiber yarns of the inner-layer braided layer 1 is 18-80 degrees, the braiding angle refers to an angle formed by braiding the reinforced fiber yarns in the inner-layer braided layer in a staggered manner, and the radial compressive strength of the pipeline is improved through the braiding angle.

In the process of preparing the outer-layer braided layer by the horizontal braiding machine, the braiding angle of the reinforcing fiber yarns of the outer-layer braided layer 3 is 18-80 degrees, the braiding angle refers to an angle formed by braiding the reinforcing fiber yarns in the inner-layer braided layer in a staggered manner, and the radial compressive strength of the pipeline is improved through the braiding angle.

The utility model discloses well reinforcing fiber yarn material that adopts is glass fiber, carbon fiber, aramid fiber or basalt fiber. The glass fiber is an inorganic non-metallic material with excellent performance, has various varieties and has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength; the carbon fiber is a special fiber composed of carbon elements, has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, is fibrous and soft in appearance, can be processed into various fabrics, and has high strength and modulus along the fiber axis direction due to the preferred orientation of the graphite microcrystal structure along the fiber axis; the aramid fiber is a novel high-tech synthetic fiber, has the excellent performances of ultrahigh strength, high modulus, high temperature resistance, acid and alkali resistance, light weight and the like, the strength of the aramid fiber is 5-6 times that of a steel wire, the modulus of the aramid fiber is 2-3 times that of the steel wire or glass fiber, the toughness of the aramid fiber is 2 times that of the steel wire, and the weight of the aramid fiber is only about 1/5 times that of the steel wire; the basalt fiber is composed of oxides such as silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, iron oxide, titanium dioxide and the like, and the basalt continuous fiber not only has high strength, but also has various excellent performances such as electric insulation, corrosion resistance, high temperature resistance and the like.

The utility model provides a reinforcing fiber inlayer weaving layer, the vertical yarn in middle level and the thickness of outer weaving layer are greater than 0.1mm, according to the stacking of each layer selectable reinforcing fiber yarn of user demand, form the level of different thickness in order to satisfy mechanical properties's demand.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. An FRP pipe, characterized in that: the pipeline comprises an inner woven layer, a middle longitudinal yarn and an outer woven layer from inside to outside, wherein the inner woven layer is formed by interweaving reinforced fiber yarns; the middle layer longitudinal yarn is axially arranged along the circumferential surface of the inner layer weaving layer by adopting reinforced fiber yarn; the outer weaving layer is formed by weaving reinforcing fiber yarns on the circumferential surface of the middle longitudinal yarn in a staggered mode.

2. The FRP pipe as claimed in claim 1, wherein: the knitting angle of the reinforced fiber yarn of the inner knitting layer is 18-80 degrees.

3. The FRP pipe as claimed in claim 2, wherein: the knitting angle of the reinforced fiber yarn of the outer knitting layer is 18-80 degrees.

4. The FRP pipe as claimed in any one of claims 1 to 3, wherein: the reinforced fiber yarn is glass fiber, carbon fiber, aramid fiber or basalt fiber.

5. The FRP pipe as claimed in any one of claims 1 to 3, wherein: the thickness of the inner knitting layer, the middle longitudinal yarn and the outer knitting layer of the reinforced fiber is larger than 0.1 mm.