Installation method of glass fiber reinforced plastic jacking pipe

The installation of fiberglass reinforced plastic (FRP) pipe jacking primarily involves the following steps. The following is a detailed explanation and summary of these steps:

1. Preparation

Determine the pipe size and length: Determine the required FRP pipe size and length based on project requirements.

Clean the pipe installation area: Before installation, clean the pipe installation area to ensure it is free of obstructions for easy installation.

Prepare tools and materials: Gather the necessary tools, such as wrenches, screwdrivers, and glue, as well as necessary materials, such as pipe supports and fittings.

2. Pipe Pretreatment

Clean the pipe: Before installation, clean and trim the inside and outside of the FRP pipe jacking, as well as the pipe joints, to ensure the pipe surface is smooth and free of damage and impurities.

Pipe reinforcement: If the pipe passes through a bend, reinforce it there to prevent uneven stress at the bend, which could lead to deformation and leakage.

3. Pipe Connection

Pipe connection methods: The main connection methods for FRP pipe jacking include socket joints, flange joints, and butt welds. The specific connection method should be selected based on the design documents or actual project conditions.

Socket-and-spigot connection: A socket-and-spigot connection inserts the spigot of one pipe into the socket of another, then seals the connection with glue or other sealing material. The spigot should be reinforced with fiberglass reinforced plastic. Apply an even layer of R-glue to the rebar, then cover with a layer of glass cloth, apply unsaturated resin, and then cover with glass cloth again. Repeat this process until the desired thickness is achieved.

Flange connection: A flange connection is achieved by installing flanges at both ends of the pipe and bolting the two flanges together. Flange connections are suitable for connecting larger diameter pipes.

Butt-weld connection: A butt-weld connection is achieved by heating the ends of two pipes to a molten state and then butting them together to form a welded connection. Butt-weld connections are suitable for connecting pipes under special operating conditions such as high pressure and high temperature.

Interface Leakage: After the connection is completed, perform a leak test to ensure that the pipe is leak-free. If leaks are detected, reconnect the pipe.

IV. Pipeline Securing

Determine the Pipeline Layout: Based on the pipeline design drawings and actual site conditions, determine the pipeline layout and routing.

Installing the Bracket: Install the bracket in an appropriate location based on the length and weight of the pipe. The bracket should be sturdy and reliable, able to support the weight of the pipe and prevent deformation.

Securing the Pipe: Use a wrench or screwdriver to secure the pipe to the bracket to ensure stability. Be careful not to overtighten to avoid damaging the pipe.

Advantages and Disadvantages of Fiberglass Reinforced Plastic Pipe Jacking

V. Acceptance and Testing

Inspecting Pipe Connections: Ensure that all connections are securely sealed and leak-free.

Performing a Pressure Test: Increase the pressure within the pipe to verify that it can withstand the specified pressure. During the test, observe the pipe for any abnormal deformation or leaks.

Performing a Flow Test: Measure the flow rate within the pipe to verify that it is unobstructed. During the test, observe whether the flow rate is stable and meets design requirements.

VI. Safety Precautions

During the installation process, strictly adhere to safety procedures and protective measures to ensure the safety of personnel and equipment.

Use personal protective equipment such as gloves and goggles to prevent injury.

Observe the relevant safety regulations as stated in the operator's manual to avoid accidents.