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BEIHAI YUEDA FRP PRODUCTS
Installation Requirements for Fiberglass Reinforced Plastic (FRP) Pipes
Release time:
2022/07/26
The installation sequence of fiberglass pipes is based on the area of the division and the system: first large diameter, then small diameter; lower layers before upper layers; easier tasks before more difficult ones; first the pipe gallery, then the equipment. To reduce the impact of welding stress on the precision of machine installation, the joints of indoor and outdoor fiberglass pipes should be left outdoors.
Fiberglass pipeInstallation
Fiberglass pipeThe installation sequence should be based on the area and system of the partition, starting with large diameter pipes followed by small diameter pipes, lower layers before upper layers, easier tasks before harder ones, and installing pipe corridors before equipment. To reduce the impact of welding stress on the installation accuracy of the machinery, the connection points indoors and outdoors should be left outdoors.Fiberglass pipeConnection points should be left outdoors.
1.Fiberglass pipeInstallation Requirements
1.Fiberglass pipeBefore installation, review the equipment pipe openings, embedded parts, reserved holes, steel structures, and other related content.Fiberglass pipeThe slope should be adjusted according to the requirements of the drawings. The adjustment method can use brackets to meet the slope requirements. Weld seams should be placed in locations that are convenient for maintenance and observation.
2.Fiberglass pipeThe slope should be adjusted according to the requirements of the drawings. The adjustment method can use brackets to meet the slope requirements. Weld seams should be placed in locations that are convenient for maintenance and observation.
3. The interior connected to the conveying equipment should be cleaned before installation, and the welding fixed nozzle should generally be away from the equipment to avoid the impact of welding stress on the installation accuracy of the conveying equipment.Fiberglass pipe4.
Before connecting the fiberglass pipe to the machine, prevent relative strength and check the parallelism and coaxiality of the flange in a free state.5. Safety valves should be installed vertically. During trial operation, safety valves should be adjusted in a timely manner. The final adjustment of the safety valve is done on the system, and the opening and reset pressure should comply with the specifications in the design documents.6. Before installing the valve, check the model according to the design documents and determine its installation direction based on the flow direction of the medium. When the valve is connected using flanges or threaded connections, the valve should be installed in the closed state; if it is welded installation, the valve should not be closed.
7. Temporary replacement of instrument components: After all instrument components are installed, use temporary components for replacement. After pressure testing, flushing, and purging work is completed, formal installation can proceed.
Heating EffectFiberglass pipeSteel heating is a heating method that is almost universally adopted in the design of plastic molding molds. It can be designed in various forms such as unidirectional wiring, bidirectional wiring, etc. The materials can be seamless pipes, welded pipes, stainless steel pipes, etc., characterized by low heat loss. It is compact, has high thermal efficiency, and simple wiring, and can be designed for 220V or 380V as needed, with flexible and diverse wiring. However, due to the limitations of its materials and processing technology, attention must be paid to its characteristics in mold design.
(1) The heating pipe usually has longer cold ends at both ends, which cannot provide heating.
Fiberglass pipe(2) The power design of the heating section should not exceed the limit of 10 watts/cm. For example, for a 30 cm long heating pipe, the power should not exceed 300 watts. If the designed power exceeds this limit, the surface load of the heating pipe will be very high, making the steel pipe prone to oxidation and corrosion, leading to short circuits.
(3) Mold designs with temperatures above 250°C are difficult to use with heating pipes. I previously used electric heating pipes to heat up to 420°C, but this molding temperature requires high quality for the electric heating pipes, and the circuit must be checked for smoothness and short circuits. Due to this situation, heating pipes, terminals, connecting copper wires, steel plates, and other media are easily oxidized, leading to open circuits. Therefore, special treatment of the electrical transmission medium is required to avoid exposing the wires to air as much as possible to extend the lifespan of the wires.
（1）加热管通常两端冷端较长，不能起到加热作用。
（2）加热段的功率设计应尽量不超过10瓦/厘米的限制。比如30厘米长的加热管，功率尽量不要超过300瓦。如果设计功率超过这个限度，加热管的表面负荷就会很高，钢管容易氧化腐蚀，造成短路。
（3） 温度高于250℃的模具设计，难以使用加热管。我以前用电热管加热到420℃，但是这个成型温度对电热管的质量要求很高，要检查电路的通畅，有没有短路.由于这种情况，发热管、端子、连接用铜线、钢板等介质很容易氧化，导致开路。因此，需要对电传输介质进行特殊处理，尽可能避免将导线暴露在空气中，以延长导线的使用寿命。
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