CN218272484U

CN218272484U - Box type current sensor

Info

Publication number: CN218272484U
Application number: CN202222036974.8U
Authority: CN
Inventors: 李兴相; 梁诚; 苑东康
Original assignee: Nanjing Kanglun Electronic Co ltd
Current assignee: Nanjing Kanglun Electronic Co ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2023-01-10
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses a box-type current sensor, which comprises a first shell and a second shell rotationally connected with the first shell, wherein a first magnetic core is placed in the first shell, and a second magnetic core is placed in the second shell; the clamping device comprises a first shell, a second shell and a clamping piece, wherein the first shell and the second shell are opposite in shape, the clamping piece is of a closed structure, one side of the clamping piece is fixed on the first shell or the second shell, the other side of the clamping piece is of an inwards-concave arc shape, and the clamping piece is made of elastic materials. The utility model has the advantages that the holder has been increased and the wire is used for the centre gripping to be favorable to hanging and use on the wire of slope or vertical state.

Description

Box type current sensor

Technical Field

The utility model relates to a current sensor technical field, in particular to box-type current sensor.

Background

Partial discharge detection is an important test for testing the insulation state of high-voltage electrical equipment such as high-voltage switches GIS, transformers, generators, power cables and the like. In the prior art, in addition to directly measuring the partial discharge of the high-voltage electrical equipment by using an ultrasonic method and an ultrahigh frequency method, the partial discharge condition in the high-voltage electrical equipment can also be detected by detecting a high-frequency current signal of a grounding wire of the high-voltage electrical equipment.

The high-frequency current sensor is used as a sensor device for detecting partial discharge by a high-frequency current detection method, a Rogowski mode is generally adopted, a plurality of conductive coils are wound on an annular magnetic core material, and high-frequency alternating electromagnetic fields caused by high-frequency current passing through a second magnetic core center can generate induced voltages on the coils. The box type current sensor is a common form of the current sensor at present, and the appearance of the box type current sensor is a box body which can be opened and closed and can be flexibly hung at a proper position on a wire to be measured.

However, the aperture of the box-type current sensor is often larger than the diameter of the lead, and the sensor and the lead cannot be fixed when the box-type current sensor measures current. Therefore, when the lead is in a vertical or inclined state, the box-type current sensor needs to be placed at a supportable position, but for some special environments, such as a complex circuit, an electrical element or a pit-shaped structure at the bottom of the lead, the sensor which cannot be fixed with the lead brings about a certain safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model provides a box-type current sensor, its advantage has increased the holder for the centre gripping wire to be favorable to hanging and use on the wire of slope or vertical state.

The above object of the present invention is achieved by the following technical solution, a box-type current sensor, including a first housing and a second housing rotatably connected to the first housing, a first magnetic core is placed in the first housing, a second magnetic core is placed in the second housing, when the first housing and the second housing are fastened, a gap for a wire to be measured to pass through is formed between the first housing and the second housing, and when the first housing and the second housing are fastened, the first magnetic core and the second magnetic core form a closed magnetizer, and when the first housing and the second housing are fastened, the first housing and the second housing are fixed by a fastening structure;

the clamping piece is of a closed structure, one side of the clamping piece is fixed on the first shell or the second shell, the other side of the clamping piece is of an inwards-concave arc shape, and the clamping piece is made of elastic materials.

The utility model discloses further set up as, the width of holder is not less than the width of second magnetic core.

The utility model discloses further set up to, be equipped with the support piece of connecting the holder both sides in the holder, the support piece symmetry in a holder is provided with two.

The utility model discloses further set up as, the holder is made by silica gel material or thermoplastic elastomer TPE material.

The utility model discloses further set up to, be equipped with the lug on the first casing, be equipped with the buckle on the second casing, be equipped with the catching groove on the buckle, when first casing and second casing lock, the lug holds in the catching groove.

The utility model discloses further set up to, the lug is equipped with the slope towards one side of second casing.

To sum up, the beneficial effects of the utility model are that: the utility model discloses a position sets up two holders between first casing and second casing, and during the use, holder extrusion wire and deformation, the holder can press from both sides tight wire to make the sensor hang on the wire, even the wire is slope or vertical state, still can hang on the wire, when using the sensor, is favorable to the mounted position of nimble selection sensor.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic side view of an embodiment of the present invention.

In the figure, 1, a first housing; 2. a second housing; 3. a clamping member; 4. a support member; 5. buckling the plate; 6. buckling grooves; 7. a bump; 8. a ramp.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Example (b): referring to fig. 1-2, a box-type current sensor includes a first casing 1 and a second casing 2 rotatably connected to the first casing 1, a first magnetic core is disposed in the first casing 1, a second magnetic core is disposed in the second casing 2, when the first casing 1 and the second casing 2 are buckled, a gap for a wire to be tested to pass through is formed between the first casing 1 and the second casing 2, and when the first casing 1 and the second casing 2 are buckled, a closed magnetic conductor is formed by the first magnetic core and the second magnetic core.

In this embodiment, a coil is wound on the first magnetic core, the coil is encapsulated in the first housing 1, and a coil wire is led out from the bottom of the first housing 1. First casing 1 and second casing 2 all adopt the PVC material to make, and for weight reduction, the volume of second casing 2 is less than first casing 1, second casing 2 satisfy the second magnetic core the encapsulation can, the both ends of first magnetic core and second magnetic core all expose to first magnetic core and second magnetic core can laminate when first casing 1 and second casing 2 lock.

The first shell 1 and the second shell 2 are connected through a hinge, and the first shell 1 and the second shell 2 are fixed through a buckle structure when buckled. The improved shell structure is characterized in that a convex block 7 is arranged on the first shell 1, a buckling plate 5 is arranged on the second shell 2, a buckling groove 6 is formed in the buckling plate 5, and when the first shell 1 and the second shell 2 are buckled, the convex block 7 is contained in the buckling groove 6. The side of the projection 7 facing the second housing 2 is provided with a slope 8 so that the projection 7 can smoothly enter the catching groove 6.

First casing 1 and the relative one side of second casing 2 all are equipped with holder 3, holder 3 is a closed structure, one side of holder 3 is fixed on first casing 1 or second casing 2, and the mode that optional glue was pasted, the opposite side of holder 3 sets up to inside sunken arc, the width of holder 3 is not less than the width of second magnetic core. Support pieces 4 connected with two sides of the clamping piece 3 are arranged in the clamping piece 3, and two support pieces 4 in one clamping piece 3 are symmetrically arranged. The clamping member 3 is made of an elastic material. The clamping piece 3 is made of a silicone material or a thermoplastic elastomer (TPE) material.

The clamping piece 3 and the supporting piece 4 in the clamping piece 3 have good elasticity, the two clamping pieces 3 are arranged between the first shell 1 and the second shell 2, when the sensor is used, the clamping pieces 3 extrude a wire to be deformed, the clamping pieces 3 can clamp the wire, so that the sensor is hung on the wire, even if the wire is in an inclined or vertical state, the sensor can still be hung on the wire, and when the sensor is used, the sensor is favorable for flexibly selecting the installation position of the sensor.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.

Claims

1. The box-type current sensor is characterized by comprising a first shell (1) and a second shell (2) which is rotatably connected with the first shell (1), wherein a first magnetic core is placed in the first shell (1), a second magnetic core is placed in the second shell (2), when the first shell (1) and the second shell (2) are buckled, a gap for a wire to be tested to pass through is formed between the first shell (1) and the second shell (2), a closed magnetizer is formed by the first magnetic core and the second magnetic core when the first shell (1) and the second shell (2) are buckled, and the first shell (1) and the second shell (2) are fixed through a buckling structure when buckled;

the clamping device is characterized in that one side, opposite to the first shell (1) and the second shell (2), of the first shell (1) is provided with a clamping piece (3), the clamping piece (3) is of a closed structure, one side of the clamping piece (3) is fixed to the first shell (1) or the second shell (2), the other side of the clamping piece (3) is of an inward concave arc shape, and the clamping piece (3) is made of elastic materials.

2. The cartridge current sensor according to claim 1, wherein a width of the holder (3) is not smaller than a width of the second core.

3. The cassette current sensor according to claim 2, wherein support members (4) are provided in the holder (3) to connect both sides of the holder (3), and two support members (4) are provided symmetrically in one holder (3).

4. The box current sensor according to claim 1, characterized in that said clip (3) is made of silicone material or thermoplastic elastomer (TPE) material.

5. The current sensor of a cassette type according to claim 1, wherein the first case (1) is provided with a projection (7), the second case (2) is provided with a clip (5), the clip (5) is provided with a catching groove (6), and when the first case (1) and the second case (2) are caught, the projection (7) is received in the catching groove (6).

6. The cartridge current sensor according to claim 5, wherein a side of the projection (7) facing the second housing (2) is provided with a slope (8).