Causes of Slippage in Polyurethane Spray‑Machine Piping
Release Date:
Mar 15,2021
Thanks to the sustainable development of the exterior wall insulation industry, we can increasingly see buildings insulated from the outside using polyurethane spray‑on equipment. As a widely adopted type of polyurethane spraying machine, the demand for high‑pressure polyurethane sprayers has been steadily declining. Below, we primarily discuss the causes of slippage within the piping of polyurethane spray‑on machines.
Thanks to the sustainable development of the exterior wall insulation industry, we can increasingly see buildings equipped with polyurethane spray‑on insulation systems. As a widely used type of polyurethane spraying equipment, the demand for high‑pressure polyurethane sprayers has been steadily declining. The following section primarily discusses… Polyurethane spray machine The reasons for sliding within the pipeline.
Polyurethane‑insulated pipes undergo thermal expansion, and these changes may occur alongside displacement phenomena; meanwhile, the insulation layer and the outer jacket typically share a continuous 360‑degree structure. External fixation requires that the working steel pipe and the external protective casing be securely anchored as a single unit; for this purpose, each pipeline is often equipped with two medium‑sized reinforced‑concrete piers to ensure stable pipe positioning. As industries continue to evolve, external wall insulation is becoming increasingly prevalent. This clear trend indicates that polyurethane spray‑application technology is steadily maturing, and high‑pressure polyurethane sprayers are being deployed more widely in conjunction with various polyurethane spraying systems.
We primarily discuss the causes of pipe slippage in polyurethane spray‑on insulation systems. The polyurethane insulation expands thermally and may undergo certain deformations, leading to displacement; meanwhile, the insulation layer and the outer jacket typically share a uniform structure without dead‑end sections. External fixation requires that the working steel pipe and the external protective casing be securely anchored as a single unit, with two large or medium‑sized reinforced concrete piers installed at each end of the pipeline and its expansion joints to ensure stable positioning. In polyurethane spray‑on insulation systems, the insulating material is applied through a specific process, forming a monolithic composite with the working steel pipe; thus, when the pipe expands thermally, both the insulation and the steel pipe move together. A 10–20 mm gap is maintained between the outer jacket and the insulation layer. This innovative structural design not only provides excellent thermal performance but also serves as a drainage channel. Both the working steel pipe and the outer jacket are supported by fixed heat‑conducting brackets, which reduce friction during pipe movement, enabling smoother and faster displacement.
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