Mold for small-diameter glass reinforced plastic pipeline internal curing production

Abstract

The invention discloses a mold for small-diameter glass reinforced plastic pipeline internal curing production, belonging to the technical field of molds. The mold comprises a mold body, the mold bodyis internally provided with an inner cavity, the inner cavity is internally provided with a core pipe, the mold is characterized in that the front end of the mold body is connected with a buffering pipe, the pipe chamber of the buffering pipe is communicated with the pipe chamber of the core pipe, and the inner diameter of the buffering pipe is greater than that of the core pipe. According to themold, as the front end of the core pipe is connected with the buffering pipe with a relatively large inner diameter, one the one hand, curing steam enters the buffering pipe firstly, a relatively large inner chamber space of the buffering pipe is utilized for buffering and mixing again, the heat energy distribution is more uniform, the flow velocity of entering the core pipe is reduced, the control range of steam flow is broadened, and control is easy; on the other hand, the buffering pipe is not applied to practical production, the rigidity of the buffering pipe can be enhanced through the manners such as increasing wall thickness, and the phenomenon of generating a curve is avoided.

Description

technical field [0001] The invention belongs to the technical field of moulds, and in particular relates to a mold for internal solidification production of small-diameter FRP pipes. Background technique [0002] FRP pipe has many excellent characteristics such as light weight, high strength, corrosion resistance and low fluid resistance, so it is widely used in the transportation of various media, and most of them are large-diameter FRP pipes. At present, most of the large-diameter FRP pipes of DN40-600 are produced by the internal curing winding method, and the production equipment and technology are relatively mature. [0003] For the small diameter pipe of DN25, due to its small inner diameter, the mold used is thinner, it is easy to bend and deform during the production process, and the curing temperature is difficult to control. Therefore, small-caliber FRP pipes basically still adopt the production method of external curing, which increases equipment investment and l...

AI Technical Summary

Problems solved by technology

[0003] For the small diameter pipe of DN25, due to its small inner diameter, the mold used is thinner, it is easy to bend and deform during the production process, and the curing temperature is difficult to control

Images