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CN-224231844-U - Novel rogowski coil

CN224231844UCN 224231844 UCN224231844 UCN 224231844UCN-224231844-U

Abstract

The utility model discloses a novel Rogowski coil which is technically characterized by comprising a shell and a flexible coil surrounding a conductor to be tested, wherein the shell is provided with a lead for guiding data, the end part of the flexible coil is connected with a split-type casing, the casing consists of two half shells and is provided with a protrusion A with a buckle A, the shell comprises a fixed shell and a movable casing, a groove A which is matched with the protrusion A is arranged in the inner cavity of the fixed shell, the protrusion A is matched with the groove A in the inner cavity of the fixed shell, an inclined plane A is arranged on the shell close to the groove A, an inclined plane protrusion B is arranged on the movable casing, and the fixed shell is provided with a movable groove B which is matched with the protrusion A. According to the utility model, through the matching of the protrusion A and the groove A, the installation position is fixed when the flexible coil is installed, so that different degrees of torsion possibly occurring when the flexible coil is installed are avoided, the torsion suffered by the flexible coil is reduced, the distortion of an output signal is reduced, and the measurement accuracy is improved.

Inventors

  • LIU QI

Assignees

  • 湖北夏森电力有限公司

Dates

Publication Date
20260512
Application Date
20250423

Claims (6)

  1. 1. The novel Rogowski coil comprises a shell and a flexible coil (3) surrounding a conductor to be tested, wherein the shell is provided with a lead for guiding data, the novel Rogowski coil is characterized in that the end part of the flexible coil (3) is connected with a split-type casing (4), the casing (4) is composed of two half shells and is provided with a protrusion A (41) with a buckle A (42), the shell comprises a fixed shell (1) and a movable casing (2), a groove A (11) adapting to the protrusion A (41) is formed in an inner cavity of the fixed shell (1), the protrusion A (41) is matched with the groove A (11) in the inner cavity of the fixed shell (1), an inclined plane A (12) is arranged on the shell close to the groove A (11), an inclined plane protrusion B (21) is arranged on the movable casing (2), and a movable groove B (13) adapting to the fixed shell (1) is arranged.
  2. 2. The novel rogowski coil according to claim 1, characterized in that the number of the protrusions A (41) is two, and the protrusions A are symmetrically arranged at two sides of the sleeve (4).
  3. 3. The novel rogowski coil according to claim 1, characterized in that the inner diameter of the movable housing (2) is adapted to the outer diameter of the flexible coil (3), and the movable housing (2) is provided with an opening (23) adapted to the protrusion a (41).
  4. 4. The novel Rogowski coil of claim 1, wherein a chip bin (5) communicated with an inner cavity is formed on the side surface of the fixed shell (1), an electronic module is integrated in the chip bin (5), and a detachable sealing cover (51) is arranged on the outer side of the chip bin.
  5. 5. The novel Rogowski coil of claim 1, wherein the end face of the boss A (41) is provided with a limiting boss C (411), the fixed shell (1) is provided with a limiting boss D (14), and the inner side of the movable housing (2) is provided with a limiting boss C (411) and a buckle B (22) which is matched with the limiting boss D (14).
  6. 6. A novel Rogowski coil as set forth in claim 1, characterized in that the housing surface is provided with stiffening grooves (15).

Description

Novel rogowski coil Technical Field The utility model relates to the technical field of rogowski coils, in particular to a novel rogowski coil. Background At present, the rogowski coil is a hollow annular flexible coil, also called rogowski flexible coil or rogowski current sensor, is an electrical device for measuring alternating current, can be directly sleeved on a measured conductor to measure the alternating current, is suitable for measuring the alternating current in a wider frequency range, has no special requirements on the conductor and the size, has quick instant response capability, and is widely applied to occasions where a traditional current measuring device such as a current transformer cannot be used. However, the prior art has some defects, the end part of the flexible coil is always directly connected with the fixed movable housing when the conventional rogowski coil is installed, so that the flexible coil is easy to twist unevenly, the degree of each twisting is different, the distortion of an output signal can be directly caused, measurement errors of different degrees occur, and the accuracy of measurement is reduced. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide a novel rogowski coil. The flexible coil comprises a shell and a flexible coil surrounding a conductor to be tested, wherein the shell is provided with a lead for guiding data, the end part of the flexible coil is connected with a split type casing, the casing consists of two half shells and is provided with a protrusion A with a buckle A, the shell comprises a fixed shell and a movable casing, a groove A which is matched with the protrusion A is formed in the inner cavity of the fixed shell, the protrusion A is matched with the groove A in the inner cavity of the fixed shell, an inclined plane A is arranged on the shell close to the groove A, an inclined plane protrusion B is arranged on the movable casing, and a movable groove B which is matched with the fixed shell is arranged on the fixed shell. The utility model is further characterized in that the number of the protrusions A is two, and the protrusions A are symmetrically arranged on two sides of the casing. The utility model is further arranged that the inner diameter of the movable housing is adapted to the outer diameter of the flexible coil, and the movable housing is provided with an opening adapted to the protrusion A. The utility model is further characterized in that the side surface of the fixed shell is provided with a chip bin communicated with the inner cavity, an electronic module is integrated in the chip bin, and the outer side of the chip bin is provided with a detachable sealing cover. The utility model is further characterized in that the end face of the bulge A is provided with a limiting bulge C, the fixed shell is provided with a limiting bulge D, and the inner side of the movable housing is provided with a buckle B which is adaptive to the limiting bulge C and the limiting bulge D. The utility model is further arranged that the surface of the shell is provided with a reinforcing groove. In summary, the utility model has the advantages that the installation position is fixed when the flexible coil is installed through the matching of the bulge A and the groove A, so that different degrees of torsion possibly occurring when the flexible coil is installed are avoided, the torsion suffered by the flexible coil is reduced, the distortion of output signals is reduced, and the measurement accuracy is improved. Drawings FIG. 1 is a schematic diagram of the structure of the present embodiment; FIG. 2 is a side sectional view of the present embodiment; FIG. 3 is an exploded view of the present embodiment; FIG. 4 is a schematic diagram of a second explosion of the present embodiment; Reference numeral 1, a fixed shell; 11, a groove A, 12, an inclined plane A, 13, a movable groove B, 14, a limit protrusion D, 15, a reinforcing groove, 2, a movable housing, 21, a protrusion B, 22, a buckle B, 23, an opening, 3, a flexible coil, 4, a casing, 41, a protrusion A, 411, a limit protrusion C, 42, a buckle A, 5, a chip bin and 51, and a detachable sealing cover. Detailed Description The present utility model will be described in further detail with reference to the accompanying drawings. The embodiment discloses a novel Rogowski coil, as shown in figures 1 to 4, the novel Rogowski coil comprises a shell and a flexible coil 3 surrounding a conductor to be tested, the shell is provided with a lead for guiding data, the end part of the flexible coil 3 is connected with a split type shell 4, the shell 4 is composed of two half shells and is provided with a protrusion A41 with a buckle A42, the two half shells and the buckle A42 arranged through the buckle A42 can be easily combined into the shell 4, the shell 4 is mounted to the flexible coil 3 without additional tools, the shell comprises a fixed shell 1 and