Waterproof flexible current transformer

Abstract

The utility model discloses a waterproof flexible current transformer, including flexible core, cross type clamping structure, threaded fastening structure, cross clamping structure includes the male end and female end of mutual socket cooperation, the both ends of flexible core are equipped with contact surface structure, and two contact surface structures are side surface mutual resistance tight type surface contact when plug -in cooperation, and the male end, female end are inserted to relative movement along the axial, and the precession extrusion structure gradually adds the pressure of two contact surface structures along the radial when moving towards, the utility model discloses a flexible core side surface contact structure and shell spiral pressure tight mechanism, realize automatic guiding, stable pressure and consistent magnetic flux path. Flexible core adopts symmetry split type design and high flexibility magnetic material, can bidirectional bending closure, adapts the conductor of different size and shape, has improved installation adaptability significantly, has solved traditional flexible mutual inductor end surface contact instability, has improved the consistency and measurement precision of magnetic flux induction.

Claims

1. A waterproof flexible current transformer, characterized by, Including flexible iron core, cross-clamping structure, and threaded fastening structure; The cross-type clamping structure includes a male end and a female end that fit together in a socketing manner; The flexible iron core has contact surface structures at both ends. The contact surface structures at both ends are respectively set in the cross-type clamping structure to form a male contact surface and a female contact surface. When the two contact surface structures are inserted and mated, they are in side-to-side abutting surface contact. The cross-type clamping structure also includes a precession extrusion structure, wherein the male end and the female end move relative to each other along the axial direction and are inserted into each other, and the precession extrusion structure applies a radial clamping force to the two contact surface structures as they move toward each other; The threaded fastening structure includes a screw cap on one end of the cross-type clamping structure and a threaded portion on the other end, wherein the screw cap and the threaded portion are screwed together.

2. The waterproof flexible current transformer according to claim 1, characterized in that, The flexible iron core is in the shape of a flat strip, having a first state of being elongated, and a second state in which the flexible iron core can be bent to either of the flat sides to form a ring.

3. The waterproof flexible current transformer according to claim 1, characterized in that, The male end has a male groove and the female end has a female groove. Both the male groove and the female groove have concave grooves extending axially. The concave grooves have groove edges on both sides along the axial direction, and a groove bottom is formed between the two groove edges. The two groove edges and the groove bottom form an installation space for the contact surface structure. The upper surface of the contact surface structure is set higher than the groove edge.

4. The waterproof flexible current transformer according to claim 3, characterized in that, The male and female head slots are connected to each other at their open sides. The cross-type locking structure also includes a foolproof structure. The foolproof structure includes a support rib on the concave groove of the male head slot and a slot on the open side of the concave groove of the female head slot. The support rib is axially arranged on the outside of the bottom of the concave groove. The slot is an axially arranged slot for the support rib to be inserted into for positioning.

5. The waterproof flexible current transformer as claimed in claim 3, wherein, The precession extrusion structure includes a male guide slope structure and a female guide slope structure. The male guide slope structure is disposed on the male end and is a boss structure extending axially. The male guide slope has a first inclined surface near the male groove. The female guide slope structure is disposed on the outside of the groove bottom of the female groove and forms a second inclined surface. When the male end and the female end are inserted, the first inclined surface contacts the second inclined surface, and the two concave grooves are extruded radially through the relative movement of the inclined surfaces.

6. A flexible current transformer of the type defined in claim 5, characterised in that The female head groove at the female head end is a movable part, and the female head groove is configured to slide radially. An elastic member is provided inside the female head end, and the elastic member is configured to make the female head groove always tend to move away from the center.

7. A waterproof flexible current transformer according to claim 1, characterized in that, It also includes a waterproof sealing structure, which includes an annular sealing edge provided on the end face of the female end and an annular sealing groove provided on the outer periphery of the male end. A sealing gasket is provided in the annular sealing groove. When the parts are inserted, the annular sealing edge and the annular sealing groove cooperate to press the sealing gasket from both sides.

8. The waterproof flexible current transformer as claimed in claim 1, wherein, The flexible iron core is a thin-sheet laminated structure, which consists of several layers of long strip-shaped iron core sheets stacked together. The iron core sheets are divided into female iron cores and male iron cores. The female iron cores and male iron cores are stacked alternately in sequence. The ends of several male iron cores are inserted into the male end to form a male contact surface, and the ends of several female iron cores are inserted into the female end to form a female contact surface. When the flexible iron core is laterally bent and deformed, a small axial displacement is formed between adjacent iron core sheets.

9. A flexible current transformer of the type defined in claim 8, characterised in that The flexible iron core also includes an axial tension reinforcement structure, which includes a steel wire rope. The two ends of the steel wire rope are respectively fixedly connected to the housing at the male end and the female end to form an axial tension reinforcement for the current transformer. The iron core sheet at the opposite position to the diameter of the steel wire rope extends along its width direction and is provided with lateral flanges. An installation groove for fixing the steel wire rope is formed between the two lateral flanges.

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