PVC modular high-ring stiffness spiral winding pipe and production method thereof

Abstract

The invention discloses a PVC modular high-ring stiffness spiral winding pipe and a production method thereof. The PVC modular high-ring stiffness spiral winding pipe comprises a pipe integrally wound by a first frame profile and a second frame profile; the first frame profile is a pipe outer layer; the second frame profile is a pipe inner layer; multiple ring stiffness reinforcing modules are hung or inlaid between the first frame profile and the second frame profile; the ring stiffness reinforcing modules have grooves and bosses matched and fixed with each other; the grooves and the bosses are automatically clamped when the second frame profile clockwise or anticlockwise rotates; the first frame profile, the second frame profile and the ring stiffness reinforcing module are combined to form a ring stiffness reinforcing layer; each ring stiffness reinforcing module is fan-shaped; and the ring stiffness reinforcing layer is a ring, and is spirally wound to form a large-caliber pipe through a winding machine. The device is higher in ring stiffness, excellent in displacement resistance, low in production cost, convenient for transportation and capable of realizing the field operation.

Description

technical field [0001] The invention relates to the technical field of PVC profile spiral pipes, in particular to a PVC modular high-ring-rigidity winding pipe with particularly high ring stiffness, good displacement resistance, reduced production cost, convenient transportation and on-site production. Background technique [0002] At present, large-diameter pipes are widely used in urban infrastructure such as sewage discharge, agricultural irrigation, water diversion, communication and construction, and the technical index of ring stiffness of large-diameter pipes in the prior art is particularly important. Most of the existing large-diameter pipes use the form of multi-layer winding between profiles to increase the modulus. Multi-layer winding does not achieve the effect of 1+1=2, that is, the ring stiffness after 2 layers is superimposed is smaller than the original Twice the ring stiffness, the structure size between the profiles is increased to improve the ring stiffne...

AI Technical Summary

Problems solved by technology

Most of the existing large-diameter pipes use the form of multi-layer winding between profiles to increase the modulus. Multi-layer winding does not achieve the effect of 1+1=2, that is, the ring stiffness after 2 layers is superimposed is smaller than the original Twice the ring stiffness, the structure size between the profiles is increased to improve the ring stiffness of the pipeline, but due to the unstable process, there is a distance between the original reinforced piers, and the increase of the ring stiffness by the wall thickness of the pipe body is not very ideal. , and some use steel belt and plastic winding to increase the ring stiffness of the pipeline, but it cannot avoid the characteristics of metal corrosion, and the slight damage in the plastic production process will also corrode the steel belt, especially the high pollution of sewage in buried pipelines The environment is extremely corrosive, and it is easy to corrode the steel strip and cause great damage to the collapse. Now people are satisfied with improving the ring stiffness in the short term, but they do not consider the long-term life of the pipeline. Rigid pipes, and the shrinkage properties of metals and plastics are different, so high ring stiffness in the large-diameter pipe market has always been a technical problem in the pipe industry, and the current extruders cannot produce such a large-diameter one-shot plastic pipe

[0003] Chinese patent publication ZL001330209, PCT, Chinese patent ZL20048004459.6 and large-mouth winding pipe and its winding method CN 104534188A invented by the inventor all solve the production of large-diameter pipes, and all adopt multi-layer bulk modulus increase and structural modulus Increase the ring stiffness of the pipeline to increase, but the large-diameter ring stiffness produced by this method is only 3-4KN / m3, which is high in cost and heavy. As the market demand for high ring stiffness increases, the original pipeline must be improved to increase ring stiffness

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