A cable wrapping intermediate joint and a manufacturing process thereof

Abstract

The invention provides a cable wrapping intermediate joint and a manufacturing process thereof, which are used for butt joint of two sections of three-core or single-core cables. The wrapping intermediate joint includes the connector wrapping connecting each single-phase cable, and the protective wrapping all the connectors; A tap wrap includes a pressure nozzle connected with a conductor core ofthat same-phase cable, a stress cone sleeved on the cable, a wound limiting step, a semi-conductive tape layer, an insulating tape layer, a tap shield layer, a copper mesh layer, a single-phase cablemetal shield tape, a PVC layer and a single-phase cable waterproof layer; The protective wrapping package comprises a binding layer, a cable metal shielding tape, a cable waterproof layer and a cablearmor layer from the inside to the outside. The winding intermediate joint of the invention can achieve the purposes of good connection, reliable insulation, good sealing performance, high mechanicalstrength, simple structure and convenient fabrication and installation of the conductor core of the cable, can ensure the safety and stability of the cable operation and obtain good economic benefits, and therefore has great popularization and application value.

Description

technical field [0001] The invention relates to a cable accessory and a manufacturing process thereof, in particular to a cable wrapping intermediate joint and a manufacturing process thereof, belonging to the technical field of cable accessory manufacturing. Background technique [0002] The cable is the bridge between the power supply equipment and the electrical equipment, plays the role of transmitting electric power, and is widely used. Modern life and production are inseparable from electricity, therefore, cables are also inseparable. With the widespread use of cables, the number and quality of cable accessories required are also increasing. [0003] During the cable laying process, when the length of the cable is less than the laying length, it is necessary to connect two or more sections of cables so that the conductor cores of the cables are connected to form a continuous cable. The joints connected by cables must have certain insulation and sealing properties, co...

AI Technical Summary

Problems solved by technology

Although silicone grease can enhance the insulation capacity of the interface, it also affects the contact between the cable conductor core and the high-voltage shield of the prefabricated intermediate joint. Due to poor contact, it is easy to generate heat, which may cause thermal breakdown at the high-voltage shield electrode

[0014] To sum up, no matter what method, in the prior art, the cable intermediate joint and its manufacturing process are not perfect, mainly in the relatively complex structure, conductor core connection, main insulation interface sealing, and mechanical strength. There are certain defects that affect the safety and stability of cable operation

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