A Forming Technology of FRP Reinforced Polymer High Pressure Pipeline

A molding process and high-pressure pipeline technology, applied in the field of pipelines, can solve the problems of reinforced concrete pipelines that require a lot of manpower and material resources, limited pressure bearing performance, and corrosion of concrete pipelines, so as to avoid potential hazards and chronic persecution, fast curing speed, and resistance to cracks extended effect

Active Publication Date: 2021-06-01
山东土大力管道工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing underground water delivery pipelines generally use reinforced concrete pipelines, which are mainly responsible for water delivery functions such as drinking water, sewage, rainwater or farmland irrigation. However, existing reinforced concrete pipelines have many shortcomings. Damage or fall off, causing water leakage is more common, and when buried in the soil or transporting corrosive sewage, the concrete pipeline will be gradually eroded, causing pipeline damage. After the concrete pipeline is damaged, it needs to be replaced or repaired, all of which need to be interrupted In the process of water delivery, the buried pipeline needs to be dug out, and the engineering volume is relatively large. Therefore, the post-maintenance of the reinforced concrete pipeline needs to consume a lot of manpower and material resources

Method used

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  • A Forming Technology of FRP Reinforced Polymer High Pressure Pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, such as figure 1 As shown, the structure of the FRP pipeline includes an inner lining layer 6, an FRP pipe 3, a polymer concrete layer 2 with a skeleton net 101 and a reinforcement net 102, a bonding reinforcement layer 5 composed of quartz sand, and a fabric resin from the inside to the outside. layer 402 and gel coat resin layer 401, the FRP pipe 3 is the inner tank of the integral pipe, and the FRP pipe is prefabricated by the winding molding process, and two methods of fixed-length winding or continuous winding are adopted. The two methods use the same lay-up and lay-up structure As follows: one layer of surface felt cross-wound two layers of glass fiber yarn, impregnated with food-grade resin, thickness 1.5-2.5mm, and then hoop-wrapped 2-4 layers of glass fiber yarn, impregnated with reinforcing resin, thickness 2.5-3.5mm. Based on the above structure and process, the specific operation steps of the FRP reinforced polymer high pressure pipeline forming p...

Embodiment 2

[0055] Example 2 is a different implementation from Example 1, wherein the raw materials for the preparation of polymer concrete include 93% aggregate, resin binders, and additives totaling 7% by mass percentage, and the aggregate includes a mass ratio of 20:30:12:12:5:3 1-3 mesh quartz sand, 5-8 mesh quartz sand, 15-25 mesh quartz sand, 40-60 mesh quartz sand, 80-110 mesh quartz sand, 150- 200 mesh quartz sand, auxiliary agent is the curing agent accounting for 1.7% of resin binder, 0.27% accelerator, 1.3% coupling agent, 0.024% polymerization inhibitor.

Embodiment 3

[0056] Example 3 is a different implementation from the above two examples, wherein the raw materials for the preparation of polymer concrete include 92.5% of aggregate, 7.5% of resin binders and auxiliary agents in total, and the aggregate includes 1.5-2 mesh quartz sand, 6-7 mesh quartz sand, 18-23 mesh quartz sand, 45-55 mesh quartz sand, 90-100 mesh quartz sand with a mass ratio of 30:40:16:16:10:8 180-230 mesh quartz sand, additives are 1.5% curing agent, 0.2% accelerator, 1% coupling agent, 0.02% polymerization inhibitor.

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Abstract

The invention relates to a molding process of FRP-reinforced polymer high-pressure pipelines. The molding process uses FRP pipes as inner molds and cooperates with outer molds to form a pouring space for polymer concrete. After molding, the outer molds are removed to obtain glass-steel-reinforced polymerization For high-pressure pipelines, the molding process goes through three steps: external mold pretreatment, pouring structure construction, and pouring molding. The FRP reinforced polymer high-pressure pipelines are made of inner lining, FRP pipe, skeleton net and reinforcement from inside to outside. The polymer concrete layer, bonding reinforcement layer, fabric resin layer and gel coat resin layer of the net, the formed pipe not only has a good anti-corrosion effect on the surface, but also has a high hoop tensile strength and can withstand high water pressure. During use, it is not easy to crack, breakage and other damage phenomena, and the maintenance cost in the later period is low, which can save a lot of manpower and material resources.

Description

technical field [0001] The invention belongs to the technical field of pipelines, and in particular relates to a molding process of fiberglass-reinforced polymer high-pressure pipelines. Background technique [0002] Existing underground water delivery pipelines generally use reinforced concrete pipelines, which are mainly responsible for water delivery functions such as drinking water, sewage, rainwater or farmland irrigation. However, existing reinforced concrete pipelines have many shortcomings. Damage or fall off, causing water leakage is more common, and when buried in the soil or transporting corrosive sewage, the concrete pipeline will be gradually eroded, causing pipeline damage. After the concrete pipeline is damaged, it needs to be replaced or repaired, all of which need to be interrupted In the process of water delivery, the buried pipeline needs to be excavated, and the engineering volume is relatively large. Therefore, the post-maintenance of the reinforced conc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C39/10C04B26/02C04B26/18B29C39/26B29C39/22B29L23/00
CPCB29C39/10B29C39/22B29C39/26B29L2023/22C04B26/02C04B26/18C04B14/06C04B2103/0068C04B24/42C04B24/008C04B24/00C04B24/02
Inventor 温振刚李先众谢云龙
Owner 山东土大力管道工程有限公司
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