Hydraulic crimping method of strain clamp of bus in power substation

Abstract

The invention relates to a hydraulic crimping method of a strain clamp of a bus in a power substation, which comprises the following steps: (1) crimping a first mode a: outwards crimping the first mode a from an orifice end of a steel anchor in an aluminium wire steel anchor; (2) crimping a second mode b: on the basis of crimping the first mode, outwards crimping the second mode along the first mode; (3) crimping a third mode c: on the basis of crimping the second mode, outwards crimping the third mode along the second mode, and reserving a steel anchor part simultaneously; (4) crimping a fourth mode d: crimping the fourth mode d between the reserved steel anchor part and a lead plate; and (5) rubbing burrs down after crimping. The method is simple and easy to operate, the phenomenon of lantern flower after crimping wires is avoided, the quality and the efficiency for crimping the wires are improved, and the attractiveness, the electric conduction effect and the born tension of the wires are improved. Wastes of the wires and wire clamps caused by disqualified construction quality are saved, and the capacity of a power grid for resisting external force damage is enhanced.

Description

technical field [0001] The invention relates to a hydraulic crimping method for a bus bar tension clamp in a substation. Background technique [0002] With the large-scale construction and transformation of power grids in the past ten years, the wide application of new products and new technologies, the technology originally used for hydraulic crimping of overhead power transmission line conductors has been widely applied to the production and construction of substations. However, in the substation project, if according to figure 1 As shown in the "overhead power transmission line conductor and lightning protection line hydraulic construction process specification SDJ 226-87 (Trial)", apply pressure from the end N of the aluminum wire 3 to the nozzle, and then return to the steel anchor 2 If pressure is applied to the groove, "lantern flowers" will appear at the end of the wire side after the hydraulic crimping of the tension clamp, that is, the phenomenon of wire str...

AI Technical Summary

Problems solved by technology

However, in the substation project, if according to figure 1 As shown in the "overhead power transmission line conductor and lightning protection line hydraulic construction process specification SDJ 226-87 (Trial)", apply pressure from the end N of the aluminum wire 3 to the nozzle, and then return to the steel anchor 2 If pressure is applied to the groove, "lantern flowers" will appear at the end of the wire side after the hydraulic crimping of the tension clamp, that is, the phenomenon of wire strands, especially for the operation on the bus in the substation. Due to the short span of the bus And there are many drainage wires, and the drainage wire clips use T-shaped hydraulic crimping clamps. The "lantern flower" phenomenon is more prominent. The size of the lantern flower is different, and the largest is more than three times the diameter of the original wire. The conductive effect and the tensile force are reduced, which seriously delays the progress of the work

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