Automatic galling and polarizing device for 3PE anticorrosive coating

Abstract

The invention discloses an automatic galling and polarizing device for 3PE anticorrosive coating. The device comprises a swinging mechanism, a galling mechanism (6) and a polarizing mechanism; the galling mechanism (6) and the polarizing mechanism are connected to the swinging mechanism, the swinging mechanism can drive the galling mechanism (6) and the polarization mechanism to swing, the gallingmechanism (6) comprises a mounting frame (13) and a plurality of galling blocks, wherein the mounting frame (13) is connected to the swinging mechanism, the plurality of galling blocks are mounted onthe mounting frame (13), and the galling blocks can swing relative to the mounting frame (13). According to the device, a fixing support is provided with a plurality of clamping teeth, each clampingtooth forms gears, by fixing a pull rod on different gears, therefore, the galling force of the galling mechanism is adjusted, and the degree of galling is ensured to meet the requirement; a swing plate of the device can swing around a mounting shaft, and the upper end of the swing plate is connected with the mounting frame through a connecting spring, the galling mechanism can automatically adjust the galling depth according to thickness change of the 3PE anticorrosive coating through tension of the connecting spring, and thereby the uniformity of the degree of the galling is guaranteed.

Description

technical field [0001] The invention relates to the field of konjac, in particular to an automatic napping and polarization device for a 3PE anticorrosion layer. Background technique [0002] When laying oil and gas pipelines in the crossing section of directional drilling, according to the earth and stone conditions in the crossing section, a wear-resistant protective layer is generally installed on the outer surface of the 3PE anti-corrosion layer of the pipeline in the crossing section, SY / T 7368-2017 "Technical Specifications for Crossing Pipeline Anti-corrosion Layer", Q / SY 1477- The 2012 "Technical Specifications for Directional Drilling Pipeline Outer Coating" and other standards clearly stipulate that the 3PE anti-corrosion layer must be flame-polarized and roughened before the installation of the wear-resistant protective layer of the 3PE anti-corrosion layer in the crossing section; The most common method of polarization treatment is to manually bake 3PE with a liq...

AI Technical Summary

Problems solved by technology

[0003] 1. After the artificial flame polarization, the napping treatment cannot be carried out at the same time. When it comes to the napping process, because the ambient temperature is far lower than the polarization temperature, the polarization temperature on the surface of the PE layer is greatly reduced during the napping treatment, resulting in the degree of napping. Uniform, shallow nap depth

[0004] 2. When manually pulling the 3PE anti-corrosion layer, the first is to use sawtooth pulling, which is not easy to control the depth. If the pulling depth is too deep, the anti-corrosion layer will be damaged and cause failure, and if it is too shallow, it will not have any effect; the second is to use manual angle Grinding is done by installing a steel wire wheel on the mill, but due to the high hardness of the 3PE anti-corrosion layer, the depth of roughening in this way cannot be guaranteed

[0005] 3. When the artificial flame is polarized, the distance between the flame nozzle and the 3PE anti-corrosion layer cannot be controlled, resulting in uneven heating and poor polarization effect

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