CN212338455U - Nuclear power high-rigidity direct-buried fiber reinforced plastic pipeline - Google Patents

Abstract

The utility model provides a nuclear power high rigidity direct-burried FRP pipe way, the pipe wall of this pipeline is inside liner, inner structure layer, net ribbing layer, outer structure layer, outer inoxidizing coating from inside to outside in proper order, and wherein the net ribbing layer number of piles is one deck or multilayer, and when the net ribbing layer number of piles was the multilayer, adjacent two-layer net ribbing layer was equipped with hoop winding layer between, and each layer of pipe wall is all soaked the resin winding's mode through glass fiber fabric and is made. The utility model has the advantages that: the pipe wall section inertia moment and the external load resisting rigidity of the pipeline are improved; the problem of low rigidity of the glass fiber reinforced plastic pipeline is solved while maintaining the excellent characteristics of light weight, corrosion resistance, low cost and the like of the glass fiber reinforced plastic pipeline, and the glass fiber reinforced plastic pipeline has wide application prospect in the field of nuclear power pipeline engineering; after the glass fiber reinforced plastic pipeline is connected, the micro displacement in the axis direction is allowed, and the anti-seismic performance is better than that of the traditional concrete expansion joint structure.

Description

Nuclear power high-rigidity direct-buried fiber reinforced plastic pipeline

Technical Field

The utility model belongs to nuclear power water supply and drainage pipeline engineering field, concretely relates to high rigidity direct-burried FRP pipe way of nuclear power.

Background

The fiber reinforced plastic pipeline is a fiber reinforced resin-based composite pipe, has the characteristics of light weight, corrosion resistance, high strength, smooth pipe wall, excellent hydraulic performance and the like, and is widely applied to nuclear power pipeline engineering construction. However, the rigidity is low, the deformation is large, and if the rigidity of the glass fiber reinforced plastic pipeline is improved under the condition of not changing the structure of the glass fiber reinforced plastic pipeline, the thickness of the pipe wall needs to be increased, so that the product cost is often overhigh.

At present, the reinforced concrete is coated outside the glass fiber reinforced plastic pipeline, the glass fiber reinforced plastic pipeline only plays a role of an inner container, but no proper solution is always available for the interface connection of the glass fiber pipeline and the concrete. The method is usually solved by adding circumferential ribs to glass fiber reinforced plastics, placing the reinforcing steel bars under the circumferential ribs in advance, and bending the reinforcing steel bars after glass is solidified. The construction process has more steps, and usually needs larger excavation amount for pouring concrete, so that the use of the glass steel pipeline in the field of nuclear power engineering is limited due to the defects.

Therefore, a new composite pipe is desired in engineering, which can make up for the defect of low rigidity of the glass fiber reinforced plastic pipeline on the premise of low cost and has the excellent characteristics of corrosion resistance, long service life, light weight and the like of the glass fiber reinforced plastic pipeline.

SUMMERY OF THE UTILITY MODEL

To the technical problem, an object of the utility model is to provide a nuclear power high rigidity direct-burried FRP pipe way.

In order to realize the purpose, the technical scheme is as follows:

the utility model provides a nuclear power high rigidity direct-burried FRP pipe way, the pipe wall of this pipeline is inside liner, inner structure layer, net ribbing layer, outer structure layer, outer inoxidizing coating from inside to outside in proper order, and wherein the net ribbing layer number of piles is one deck or multilayer, and when the net ribbing layer number of piles was the multilayer, adjacent two-layer net ribbing layer was equipped with hoop winding layer between, and each layer of pipe wall is all soaked the resin winding's mode through glass fiber fabric and is made.

Further, the inner diameter of the pipeline is 600-8000 mm.

Further, the thickness of the inner lining layer is 1-5 mm, the thickness of the inner structure layer is 1-50 mm, the thickness of the grid reinforced layer is 1-50 mm, the thickness of the hoop winding layer is 1-30 mm, the thickness of the outer structure layer is 1-50 mm, and the thickness of the outer protection layer is 1-30 mm.

Furthermore, the material of the grid reinforcing layer is glass fiber continuous yarns, and a space is reserved between yarn bundles when the yarn sheets are wound.

Furthermore, one end of the pipeline is a socket, the other end of the pipeline is a socket, the socket and the socket are connected in a pluggable mode, and the outer wall of the socket is provided with a rubber ring groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the grid reinforced layer greatly improves the pipe wall section inertia moment and the external load resisting rigidity;

2. the method solves the problem of low rigidity of the glass fiber reinforced plastic pipeline at present while maintaining the excellent characteristics of light weight, corrosion resistance, low cost and the like of the glass fiber reinforced plastic pipeline, and has wide application prospect in the field of nuclear power pipeline engineering.

3. After the glass fiber reinforced plastic pipeline is connected, the micro displacement in the axis direction is allowed, and the anti-seismic performance is better than that of the traditional concrete expansion joint structure.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of a nuclear power high-rigidity direct-buried FRP pipe of the present invention;

FIG. 2 is a schematic diagram of a first winding method of the grid reinforcing ribs in an embodiment of the nuclear power high-rigidity direct-buried FRP pipe of the present invention;

fig. 3 is a schematic diagram of a second winding method of the grid reinforcing ribs in the embodiment of the nuclear power high-rigidity direct-buried fiber reinforced plastic pipeline of the present invention.

[ reference numerals ]

1-winding mould 2-inner liner layer 3-inner structure layer 4-hoop winding layer 5-grid reinforcement layer 6-outer structure layer 7-outer protective layer 8-winding axis 9-socket 10-bellmouth

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As an embodiment of the utility model discloses a 1 to 3 do, a nuclear power high rigidity direct-burried FRP pipe way, the pipeline internal diameter is between 600 ~ 8000mm, its pipe wall is by inside to outside in proper order inner liner 2, inner structure layer 3, net adds muscle layer 5, outer structure layer 6, outer inoxidizing coating 7, wherein net adds muscle layer 5 and can set up to one deck or multilayer as required, when the pipe wall has multilayer net to add muscle layer 5, adjacent two-layer net adds and is provided with hoop winding layer 4 between the muscle layer 5. Above each layer is soaked the resin winding by the glass fiber fabric and is formed, and each layer can be twined to the thickness of design as required, specifically does: 2 thickness 1 ~ 5mm of inner liner, 3 thickness 1 ~ 50mm of inner structure layer, 1 ~ 50mm of 5 thickness on net rib layer, hoop winding layer 4 thickness 1 ~ 30mm, outer structure layer 6 thickness 1 ~ 50mm, outer inoxidizing coating 7 thickness 1 ~ 30 mm.

The grid rib adding layer 5 is formed by winding continuous glass fiber yarns, yarn sheets are divided into yarn sheets with yarn bundles distributed discontinuously and yarn sheets with yarn bundles distributed continuously, when the yarn sheets with yarn bundles distributed discontinuously are used, the yarn sheets are arranged on a winding trolley, and the yarn sheets are wound on the inner structure layer 3 in a crossed manner along with the advancing of the winding trolley to form the grid rib adding layer 5, as shown in figure 2; when the grid reinforcement layer 5 is manufactured by winding yarn sheets with yarn bundles distributed continuously, the distance between the adjacent yarn sheets is equal to the width of the yarn sheets, and the rest steps are the same as the yarn sheet winding step with the yarn bundles distributed discontinuously, as shown in fig. 3.

One end of a single glass fiber reinforced plastic pipeline is a socket 9, the other end of the single glass fiber reinforced plastic pipeline is a bell mouth 10, the glass fiber reinforced plastic pipeline is connected in a mode that the socket 9 of one glass fiber reinforced plastic pipeline is inserted into the bell mouth 10 of the other glass fiber reinforced plastic pipeline, and the connection mode allows the pipeline to generate micro displacement in the axis direction; the outer wall of the socket 9 is provided with a rubber ring groove, and when the socket 9 is inserted into the bell mouth 10, a rubber ring in the rubber ring groove can seal the insertion position; a chamfer angle is arranged at the junction of the interior of the socket 10 and the main pipeline, so that the socket 9 can be limited in the socket 10.

The manufacturing method of the nuclear power high-rigidity direct-buried glass fiber reinforced plastic pipeline comprises the following steps:

1) resin is soaked in glass fiber fabrics such as polyester felt, glass fiber surface felt, chopped strand felt or knitted felt, and the like, then the glass fiber fabrics are wound on a pipeline mould 1 of a pipeline continuous winding system by using an inner liner winding trolley, and the thickness of the glass fiber fabrics can be wound to 1-5 mm according to the requirement to form an inner liner 2;

2) resin is soaked on glass fiber fabrics such as glass fiber continuous yarns or chopped yarns, the glass fiber fabrics are wound on the inner liner layer 2 by using an inner structure layer winding trolley to form an inner structure layer 3, the thickness of the inner structure layer 3 is designed according to the pressure grade of the pipeline, and the thickness is 1-50 mm;

3) using a grid reinforced layer winding trolley to wind the glass fiber continuous yarns on the inner structure layer 3 in a crossed manner to form a grid reinforced layer 5, wherein the thickness of the grid reinforced layer 5 is 1-50 mm;

if the pipe wall is only provided with one layer of grid reinforced layer 5, directly jumping to the step 6), starting from the step 4) for two or more layers,

4) soaking resin on the glass fiber continuous yarn by using a hoop winding layer winding trolley to continuously and annularly wind the glass fiber continuous yarn on the grid reinforcement layer 5 to form a hoop winding layer 4 with the thickness of 1-30 mm;

5) winding a grid reinforcement layer 5 on the annular winding layer 4, wherein the thickness is 1-50 mm;

at the moment, two grid reinforced layers 5 are wound on the pipe wall, a circumferential winding layer 4 is arranged between the two grid reinforced layers 5, if more than two grid reinforced layers 5 are arranged, the step 4) and the step 5) are repeated according to the number of layers, otherwise, the step 6) is directly carried out,

6) using an outer structure layer winding trolley to wind the glass fiber continuous yarns on the outermost grid reinforcement layer 5 in a crossed annular mode to form an outer structure layer 6, wherein the thickness of the outer structure layer 6 is designed according to the pressure grade and the pipe rigidity of the pipeline, and the thickness is 1-50 mm;

7) and finally, winding an outer protective layer 7 of the glass fiber reinforced plastic pipeline on the outer structural layer 6 according to actual needs, wherein the thickness of the outer protective layer is 1-30 mm, and the outer protective layer can prevent corrosion and leakage.

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

Claims (5)

1. A nuclear power high rigidity direct burial glass steel pipeline is characterized in that: the pipe wall of the pipeline is sequentially provided with an inner liner layer, an inner structure layer, a grid rib adding layer, an outer structure layer and an outer protective layer from inside to outside, wherein the number of the grid rib adding layer is one or more, when the number of the grid rib adding layer is multiple, a hoop winding layer is arranged between every two adjacent grid rib adding layers, and each layer of the pipe wall is manufactured by a mode that a glass fiber fabric is soaked with resin for winding.

2. The nuclear power high-rigidity direct-buried glass fiber reinforced plastic pipeline according to claim 1, characterized in that: the inner diameter of the pipeline is 600-8000 mm.

3. The nuclear power high-rigidity direct-buried glass fiber reinforced plastic pipeline according to claim 1, characterized in that: the thickness of the inner lining layer is 1-5 mm, the thickness of the inner structure layer is 1-50 mm, the thickness of the grid reinforced layer is 1-50 mm, the thickness of the circumferential winding layer is 1-30 mm, the thickness of the outer structure layer is 1-50 mm, and the thickness of the outer protective layer is 1-30 mm.

4. The nuclear power high-rigidity direct-buried glass fiber reinforced plastic pipeline according to claim 1 or 2, characterized in that: the material of the enwinding grid rib layer is glass fiber continuous yarn, and a space is reserved between yarn bundles when the yarn sheets are enwound.

5. The nuclear power high-rigidity direct-buried glass fiber reinforced plastic pipeline according to claim 1 or 2, characterized in that: one end is a socket, the other end is a socket, the socket is connected with the socket in a pluggable manner, and the outer wall of the socket is provided with a rubber ring groove.

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