Compound glass steel tube easy to insert and connect

Abstract

The invention relates to a compound glass steel tube easy to insert and connect. The compound glass steel tube comprises a tube sleeve; the inner ring side of the left end surface of the tube sleeve is provided with a circle of boss, the inner ring side of the right end surface of the tube sleeve is provided with a circle of ring groove, and the inner surface of the ring groove is matched with the outer surface of the boss; a protection tube penetrates through the tube sleeve in the axial direction of the tube sleeve; the length of the protection tube is the same as that of the tube sleeve; the left end surface of the protection tube is located on the left side of the left end surface of the tube sleeve; an outer anti-skid thread is arranged on the peripheral surface of the part, exceeding out of the tube sleeve, of the left side of the protection tube; and an inner anti-skid thread is arranged on the part, not covered with the protection tube, of the inner wall of the right side of the tube sleeve. According to the compound glass steel tube easy to insert and connect, a staggered inserting connection mode is adopted, overlapped inserting connection in existing inserting connection modes is avoided, the product utilization rate is increased, and the paving cost is reduced; and a glass steel tube provided with a four-layer structure is adopted, protection tubes can be spliced with one another to serve as an inner protection layer for containing cables, and the phenomenon that the position at a connector is not smooth in the existing overlapped inserting connection modes is avoided.

Description

technical field [0001] The invention relates to the technical field of glass steel pipes, in particular to a composite glass steel pipe easy to insert. Background technique [0002] FRP pipe is also called glass fiber wound sand pipe (RPM pipe). It mainly uses glass fiber and its products as reinforcing materials, unsaturated polyester resin and epoxy resin with high molecular weight as basic materials, and inorganic non-metallic particle materials such as quartz sand and calcium carbonate as fillers as main raw materials. The standard effective length of the pipe is 6m and 12m, and its production methods include fixed-length winding process, centrifugal casting process and continuous winding process. It can be graded and classified according to the process method, pressure grade PN and stiffness grade SN of the product. [0003] With its unique strong corrosion resistance, smooth inner surface, low transmission energy consumption, long service life (more than 50 years), c...

AI Technical Summary

Problems solved by technology

However, in order to adapt to the change of the inner diameter of FRP, it is necessary to make molds with different sizes when processing FRP, which increases the production cost of the mold, and the enlarged end also consumes more raw materials

On the other hand, when plugging, in order to fit the assembly error, it is necessary to add a rubber sealing ring between the end with a small size and the end with a large inner diameter. Even so, the seal is often unreliable, easy to water or deep When landfilling, under the action of land pressure, the soil presses the glass steel pipe to one side, so that the soil enters the inside of the glass steel pipe from the offset gap.

[0006] Due to the use of inserting one section of glass steel pipe into the other end of the glass steel pipe, it will inevitably cause overlapping waste of glass steel pipes and increase the laying cost

[0007] Because the fiberglass steel pipes in the prior art use glass fiber as the main material, workers are often scratched by burrs when operating

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