End of Yichun porcelain composite insulator seal
Their views about seal end of composite insulator. End sealing layer is the interface bull umbrella skirt sheath, core rod and the end between the connecting piece three are connected into a whole, to ensure that the end portion of the sealing end interface sealing quality directly affects the electrical properties and mechanical properties of composite insulator.
The early end of composite insulator sealing only by room temperature vulcanized silicone rubber or other sealant. With solid seal damage caused brittle fracture or string dropping accidents continue to occur, the company started to develop more effective seal method. Such as the use of HTV high temperature vulcanized rubber,. Seal the double sealing process, end sealing coating technology, four sealing structure, internal or external. Seal of O-ring: these measures can effectively protect the mandrel and metal accessories for connection, ensure the reliable operation of composite insulators
In the past, the sealing process in most of domestic composite insulator factory dear production of composite insulator is the umbrella skirt sheath and fitting end adopts the high elasticity of room temperature vulcanized silicone rubber bull then agent manual sealing, the room temperature curing adhesive sealing structure by the operating process and bonding material, bonding strength and the seal is poor, the seal is easy to damage, it is difficult to maintain long-term operation of 229 traditional composite insulator around room temperature vulcanized silicone rubber seal technology and special seal stability. At present, the research work of seal structure of whole sealing process of high temperature injection improved many factories and institutes are in contrast. Figure 2 -- 29 is a traditional room temperature vulcanized silicone rubber adhesive sealing temperature injection and after improvement of whole sealing process Liubi: the improved process using high temperature integral injection molding process, in the process of high temperature, high pressure injection of Qi towel material, compound flow can be fully extruded will end seal air, forming two sealing layer on the inner and outer surface fitting, compared with traditional sealing structure, bonding effect has been greatly improved
Company News
