CN106003756A

CN106003756A - Method for producing ultralarge-pipe-diameter and ultrahigh-pressure fiber reinforced plastic pipe

Info

Publication number: CN106003756A
Application number: CN201610333581.XA
Authority: CN
Inventors: 李继承
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-17
Filing date: 2016-05-17
Publication date: 2016-10-12

Abstract

The invention belongs to the field of long-distance oil and gas transmission and chemical pipes, and relates to a method for producing an ultralarge-pipe-diameter and ultrahigh-pressure fiber reinforced plastic pipe. In the fiber reinforced plastic pipe, the ultralarge pipe diameter refers to the pipe diameter larger than 1,000 mm; and the ultrahigh pressure refers that the conveying pressure in the pipe achieves 10 MPa or above. Only weft glass fiber yarn with glue are wound, bonded and solidified in multiple layers to form the fiber reinforced plastic pipe in a traditional production method for the fiber reinforced plastic pipe. Due to the fact that in the production method, only the weft yarn is wound, and no warp yarn reinforcement is achieved, the warp tensile strength is only half of the weft tensile strength, and only a high-pressure fiber reinforced plastic pipe with the pipe diameter smaller than 250 mm can be produced. According to the method, warp glass fiber yarn is evenly distributed for reinforcement, meanwhile, weft yarn is wound, the fiber reinforced plastic pipe product of a multi-layer screen cloth composite structure is formed, the warp tensile strength is equal to the weft tensile strength, and the tensile strength reaches or exceeds that of a steel pipe material.

Description

A kind of super large caliber and the production method of hyperpressure GRP pipe

Invention field

The present invention relates to a kind of GRP pipe product, both carried out Grain lines particularly to one and be uniformly distributed, and carried out again The GRP pipe product of broadwise line winding arrangement. it is different from traditional GRP pipe only carrying out broadwise line winding, this Bright belong to super large caliber and the oil-gas transportation of hyperpressure and chemical pipeline field.

Background technology

Chinese patent 2006200126899.0, discloses the winding method of a kind of GRP pipe." interior solidification is high for paper Pressing glass steel pipeline production control system designs " in a literary composition, the winding schematic diagram of Fig. 1-2 GRP pipe. it is traditional life Product method.This production method only carries out the multi-lay winding bonding of parallel, forms only broadwise line and is wound around and strengthens without RADIAL Duct products, its shortcoming is: warp-wise tensile strength only has 1/2nd of broadwise tensile strength, therefore, can only manufacture caliber High-pressure fiberglass pipe product less than 250 millimeters, limits the application of the fiber glass epoxy pipeline with outstanding antiseptic property Field.

Summary of the invention

The present invention provide a kind of by glass fiber yarn after impregnation, the most equidistant be laid on garden cylindrical tube mould Axial surface on, form a warp-wise layer, then, be rotated further by pipe mould, glass yarn broadwise is wrapped in warp surface, Form geographic mesh layer of cloth, through multiple-layer overlapped adhering and solidifying, become and there is desired thickness, through the glass of parallel composite construction Steel conduit product.This have the composite that Grain lines strengthens, and its warp-wise tensile strength is consistent with broadwise tensile strength.Gram Having taken in conventionally produced method, warp-wise tensile strength only has the defect of 1/2nd of broadwise tensile strength.May select not With the glass yarn of tension intensity, it is scattered in different densities, the glass meeting or exceeding steel pipe tensile strength can be produced Steel conduit product. to reach to produce super large caliber and the high-quality glass epoxy resin duct products of hyperpressure double requirements, Meet the needs of each department of national economy.

Accompanying drawing explanation

Fig. 1 is the production method schematic diagram of the present invention

1 for through the glass yarn used by parallel.

2 is the steeping vat of yarn.

3 is epoxy resin adhesive liquid.

4 are evenly distributed on the glass yarn of pipe mould outer surface for warp-wise.

5 for manufacturing the steel mould of GRP pipe. through parallel laminated on pipe mould outer garden week, it is heating and curing Epoxy resin, takes out mould and becomes glass steel conduit product.5 for manufacturing the steel mould of GRP pipe. glue through parallel multilamellar Together on pipe mould outer garden week, be heating and curing epoxy resin, takes out mould and becomes glass steel conduit product.

Embodiment

1 implementation further describing the present invention below in conjunction with the accompanying drawings

As shown in Figure 1, it is a feature of the present invention that glass yarn pulls out from spindle 1, through steeping vat 2, glue 3 in leaching After, axially-movable is made in the direction that steeping vat is made indicated by arrow, is laid on by Yarn homogeneous in the garden perimeter surface of pipe mould 5, Form the warp layer being equally spaced shown in 4, then, steeping vat is moved to left end.Rotate mould 5, by required weft density Requirement, is wrapped in Yarn homogeneous on the outer surface of Grain lines layer 4.Form Grain lines and become approximation an angle of 90 degrees, bonding with broadwise line Become the scrim layer through parallel one.Impregnation glass yarn had both been made warp distribution and had been used, and makees again parallel winding simultaneously and is used. and repetition is many Layer screen cloth is combined. after reaching the tensile strength index of design.It is heating and curing, the demoulding, i.e. form glass epoxy resin pipeline Product.This composite by required design requirement, can select the glass yarn of different tension intensity, according to different close through parallel Degree arrangement, obtains the product of different tensile strength.

The innovative point of the present invention is:

Traditional glass fiber pipe only has broadwise line to be wound around, and strengthens without Grain lines. the invention provides what Grain lines strengthened Production method, interweave bonding by Grain lines and broadwise line, has innovated the spy that warp-wise tension intensity is consistent with broadwise tension intensity Levy.Provide a kind of manufacture method that can produce super large caliber and hyperpressure GRP pipe, before opening wide market Scape, has important commercial value.

Claims

1. one kind by after glass yarn epoxy resin-impregnated, by the axis direction of pipe mould, is uniformly distributed equidistant for yarn, It is bonded in the garden perimeter surface of pipe mould, as warp layer.Then, rotating pipe mould, then yarn is made parallel, uniformly etc. Distance is wrapped on the outer surface of warp layer.Warp layer is made to form the screen cloth of bonding one with parallel layer.According to said method, repeat into Row multilamellar screen cloth is combined.Make multi-layer warp-weft line to be combined into one the fiberglass epoxy resin duct products of structure.

2. the impregnation yarn described in claim 1, had both been uniformly distributed as warp and had been used, and makees again parallel winding and is used.