FIPP Thermoformed Pipeline Rehabilitation Integrated Equipment

Technical Principle Positioning

Pipe lining repair is achieved by heating and curing thermoplastic materials, which is applied in municipal pipeline repair with a repair diameter range of DN100 to DN800.

Core Function Definition

It has the ability to repair defects such as pipeline collapse and corrosion. In 2023, a project in Shanghai used this equipment to repair 2 kilometers of DN800 sewage pipes, reducing the construction cycle by 40%.

Scope of Industry Applications

It is mainly used for non-trench repair of underground pipelines such as urban drainage and gas. Beijing Drainage Group completed the renovation of 15 old pipeline sections using this equipment in 2022.

Thermoplastic Curing Principle

Material heating softening stage

Thermoplastic resin materials are heated to 120-130°C using dedicated heating equipment, such as the FIPP devices used in a municipal project in Shanghai, which can bring the material to a viscous flow state within 5 minutes.

Lined Tube Expansion and Adhesion Stage 

The softened liner pipe is expanded using compressed air to fit tightly against the inner wall of the old pipe. In the Beijing Drainage Group project, the pressure during this process is controlled between 0.3 and 0.5 MPa.

Cooling, shaping, and curing stage

Using natural cooling or cold water circulation systems to cure the liner pipe, a pipeline repair project in a certain community in Shenzhen completed the curing within 2 hours, forming a high strength composite pipe.

Thermoformed Pipeline Rehabilitation Technology

Pipeline preprocessing

Before construction,deposits andobstacles inside the pipe must beremoved.For example,in amunicipal project in Shanghai,high-pressure water jet cleaningwas used,achieving a pipe innerwall cleanliness of over 95%.

Hose Pulling In and Positioning

Pull the heat-plastic hose saturated with resin into the pipe to be repaired from the manhole

Heating curing molding

Using a hot air circulation heating system, the hose is expanded and cured at 80-120°C. In a pipe repair project in a certain community in Guangzhou, DN600 pipes were cured in 2 hours.

Technical Key Points

Control of Thermoplastic Molding for Lining Materials

Thermoplastic materials, when heated to a constant temperature of 110- 130°C, expand through an airbag to achieve a 360° fit with the inner wall of the original pipe, with a forming error of ≤2mm.

Precise Temperature Control System for Curing

Configure the intelligent temperature control module to monitor the pipe temperature in real time. In a municipal pipeline repair project in Shanghai, it achieved a temperature difference control of ±3℃, ensuring uniform curing.

Pipeline CCTV Synchronous Monitoring Technology

Integrated pipeline borescope, which transmits real-time inner wall images during the repair process, successfully located 3 local damages and carried out precise repairs in the Beijing Drainage Group project.

Primary Operating Equipment

1 Steam generatorSteam generator, 1 steam guide groove, steam-air mixing tank, steamer, water tank

2 Pressure and RefrigeratorsCold dryer, Air compressor, Air receiver tank

3 Pipeline Traction MachinePipeline Traction Machine ImportHigh power, compact size, 1.5 tons, 100-meter cable

Steam System

Steam generatorPreheating, thermoplastic forming. Automatic pressure relief safety protection, maintenance-free, steam output: 200 liters per hour

Steam-air mixing tankPreheating, plasticizing, cooling. Easy to adjust gas temperature, steel cylindrical, diameter DN250mm, length 500mm

Air flow guide groove and steamerSteam Air Mixing TankPreheating, Thermoplastic Forming, CoolingEasy to adjust gas temperature, steel cylindrical, diameter DN250mm, length 500mmSteam cabinet preheating, thermoplastic insulation material, overall 304 stainless steel enclosed

Pressure and Cooling System

Cold DryerThermoplastic, cooling. High-efficiency refrigeration, large output, 6.8m/min

Air CompressorThermoplastic, cooling. Low noise, high output, 6m/min

Air Receiver TankThermoplastic, cooling. High strength, high safety, 0.3m volume, 0.8MPA

Traction system & Power system

Traction system Pipeline

Traction Machine Import. High power, compact size, 1.5 tons, 100-meter cable

Power systemDiesel generator set power supply. It has low noise, compact size, stable operation, and a power of 50KW.