1. Ordinary connector In the high-voltage power cable line, the straight-through connector must be connected to the cable core conductor to ensure the electrical connection, and the connector of the self-contained oil-filled power cable must keep the oil flow in the core. In the increase around the insulation shield, the two ends of the power cable insulation shield connected, there is a bright steel pipe insulation and the atmosphere, so you can withstand the oil pressure of the power cable.
2. Insulation joints Insulation joints have the same insulation structure and dimensions as ordinary joints. 110~220kV oil-filled power cable insulation joints are mainly used in large-length power cable lines, so that the metal sheath or metal shielding layer and semi-conductive layer of the power cables at both ends of the connection are electrically disconnected to facilitate cross-interconnection and reduce Cover (or shield) loss.
3. Plug-and-socket plugs Plug-and-socket connectors are the weakest link in the electrical performance of oil-filled power cable attachments, and they are also the most complex joints. It is mainly used for imperial impregnated paper-insulated power cable lines with a drop greater than the specified value to cut off the oil circuit to prevent the insulation of the high-end power cable from drying out, and the insulation oil pressure of the low-end power cable exceeds the specified value.
4. Steel pipe oil-filled power cable connector Copper pipe oil-filled power cable connector has two kinds of common connector and half-stop connector.
Ordinary connector for the length of the power cable connection, its internal insulation structure is generally phased with the self-contained oil-filled power cable connector, the shell is a copper pipe with a diameter slightly larger than the power cable pipe. Half-stop stoppers for longer oil-filled power cable lines. At the joint between the steel pipe of the joint and the power cable, the sealed cable structure is used to separate the power cable oil.
It take a compressed gas as the power to form a high-speed jet to shoot glass beads on surface of work-piece that causes changes on surface and shape of the work-piece. Due to the glass beads` impact to surface, it makes the surface a certain of cleanliness and different roughness.
• It improves the mechanical properties of surface so as to enhance the fatigue-resistance of work-piece.
• It provides with parts-surface a controllable rough-surface to increase the adhesion with the paints, to extend the durability of the paints and it is also benefit to the flow and decoration of paints.
The glass bead can be produced based on the standard of countries or areas, such as EN1423/1424, AASHTO M247, BS6088, JIS R3301 and KS L2521 etc.
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