Handheld high-frequency current sensor

Abstract

The utility model relates to a hand-held high-frequency current sensor comprising a handle housing, one end of the handle housing is fixedly provided with a fixed clamp arm, one end of the handle housing far away from the fixed clamp arm is rotatably provided with a movable side clamp arm, and the surface of the handle housing is movably provided with a pressing block. An adjusting assembly is arranged in the fixed clamp arm; the adjusting assembly comprises a rectangular box, and the rectangular box is fixedly installed on the outer side of the fixed clamp arm. According to the handheld high-frequency current sensor, the handle shell, the fixed clamp arm, the movable side clamp arm, the pressing block and the matched adjusting assembly are arranged, the pressing block is pressed to drive the movable side clamp arm to be opened to form an opening, a conductor is placed between the movable side clamp arm and the clamping plate, and the position of the clamping plate is adjusted according to the width of the conductor; the clamping plates are in complete contact with the conductors, the toothed plates are driven to move through pulling of the movable rods, the toothed plates enable the clamping plates to change in position, and the conductors of different models are fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of high-frequency current sensors, in particular to a handheld high-frequency current sensor. Background Art

[0002] High frequency current sensor (HFCT) is a sensor component for detecting partial discharge using the high frequency current detection method. It generally uses the Rogowski coil method, with multiple turns of conductive coils wrapped around an annular magnetic core material. The high frequency alternating magnetic field caused by the high frequency current passing through the center of the magnetic core will generate an induced current in the coil.

[0003] When clamping and testing the high-voltage cable, it is necessary to hold the two halves of the iron core caliper first to open the opening of the caliper before clamping the high-voltage cable. Due to the different sizes and shapes of different types and models of grounding wires, there is a problem that the high-frequency current sensor cannot be fully adapted and installed on various grounding wires. Therefore, a handheld high-frequency current sensor is proposed to solve the above-mentioned problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a handheld high-frequency current sensor, which has the advantages of fixing grounding wires of different types and models, etc., and solves the problem that the high-frequency current sensor cannot be fully adapted and installed on various grounding wires due to the different sizes and shapes of grounding wires of different types and models.

[0005] To achieve the above object, the utility model provides the following technical solution: a handheld high-frequency current sensor, comprising a handle housing, a fixed clamp arm is fixedly mounted on one end of the handle housing, a movable side clamp arm is rotatably mounted on the end of the handle housing away from the fixed clamp arm, a pressing block is movably mounted on the surface of the handle housing, and an adjustment component is arranged inside the fixed clamp arm;

[0006] The adjustment assembly includes a rectangular box, a rectangular box is fixedly installed on the outer side of the fixed clamp arm, a return spring is fixedly installed on the left inner wall of the rectangular box, a tooth plate is fixedly installed on the end of the return spring away from the rectangular box, a rotating shaft is rotatably installed inside the rectangular box, a gear is fixedly installed on the outer surface of the rotating shaft, a movable rod is fixedly installed on one end of the tooth plate, a clamping plate is movably installed on the inner wall of the fixed clamp arm, and two telescopic rods are fixedly installed on the inner wall of the clamping plate.

[0007] Preferably, a hanging rope is fixedly installed at one end of the handle shell, the hanging rope is made of elastic material, and the pressing block is connected to the movable side clamp arm by rotation.

[0008] Preferably, a second magnetic core is installed inside the clamping plate, and a first magnetic core is fixedly installed inside the movable side clamp arm.

[0009] Preferably, a through opening adapted to the tooth plate is provided inside the fixed clamp arm, and one end of the tooth plate passes through the through opening and is fixedly connected to the surface of the clamping plate.

[0010] Preferably, the outer surface of the tooth plate meshes with the surface of the gear, and the ends of the two telescopic rods away from the clamping plate are fixedly connected to the inner wall of the fixed clamp arm.

[0011] Preferably, a slide groove is provided on the top outer surface of the rectangular box, and one end of the movable rod passes through the slide groove and extends to the outside of the rectangular box.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The handheld high-frequency current sensor is provided with a handle housing, a fixed clamp arm, a movable side clamp arm, a push block and a matching adjustment component. The movable side clamp arm is driven to open by pressing the push block to form an opening, and a conductor is placed between the movable side clamp arm and a clamping plate. The position of the clamping plate is adjusted according to the width of the conductor so that the clamping plate is in full contact with the conductor. The tooth plate is driven to move by pulling the movable rod, and the tooth plate causes the clamping plate to change its position, thereby fixing conductors of different models and types. The magnetic field generated by the local discharge high-frequency current of the measured conductor can be more sensitively sensed by the first magnetic core and the second magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0015] Figure 2 This is a top view of the structure of the utility model;

[0016] Figure 3 It is a side view of the adjustment component structure of the utility model.

[0017] In the figure: 1. handle housing; 2. fixed clamp arm; 3. movable side clamp arm; 4. push block; 5. hanging rope; 6. adjustment component; 601. rectangular box; 602. reset spring; 603. tooth plate; 604. rotating shaft; 605. gear; 606. movable rod; 607. telescopic rod; 608. clamping plate; 7. first magnetic core; 8. second magnetic core. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 A handheld high-frequency current sensor in this embodiment includes a handle shell 1, a fixed clamp arm 2 is fixedly installed at one end of the handle shell 1, a movable side clamp arm 3 is rotatably installed at the end of the handle shell 1 away from the fixed clamp arm 2, a pressing block 4 is movably installed on the surface of the handle shell 1, and an adjustment component 6 is arranged inside the fixed clamp arm 2.

[0020] It should be noted that the high-frequency current sensor, as a sensor component for detecting partial discharge using the high-frequency current detection method, generally uses the Rogowski coil method, with multiple turns of conductive coils wrapped around an annular magnetic core material. The high-frequency alternating magnetic field caused by the high-frequency current passing through the center of the magnetic core will generate an induced current in the coil; and the adjustment component 6 can be set to clamp and fix high-voltage cables of different types and models.

[0021] The adjustment assembly 6 includes a rectangular box 601, a rectangular box 601 is fixedly installed on the outer side of the fixed clamp arm 2, a return spring 602 is fixedly installed on the left inner wall of the rectangular box 601, a tooth plate 603 is fixedly installed on the end of the return spring 602 away from the rectangular box 601, a rotating shaft 604 is rotatably installed inside the rectangular box 601, a gear 605 is fixedly installed on the outer surface of the rotating shaft 604, a movable rod 606 is fixedly installed on one end of the tooth plate 603, a clamping plate 608 is movably installed on the inner wall of the fixed clamp arm 2, and two telescopic rods 607 are fixedly installed on the inner wall of the clamping plate 608.

[0022] Specifically, the conductor is placed between the movable side clamp arm 3 and the clamping plate 608, and the tooth plate 603 is moved by pulling the movable rod 606. The tooth plate 603 causes the clamping plate 608 to change position, thereby fixing conductors of different models and types.

[0023] A hanging rope 5 is fixedly mounted on one end of the handle housing 1 . The hanging rope 5 is made of elastic material. The push block 4 is connected to the movable side clamp arm 3 by rotation.

[0024] Specifically, a hanging rope 5 is provided to facilitate carrying the device, and pressing the push block 4 can cause the angle of the movable side clamp arm 3 to change.

[0025] A second magnetic core 8 is installed inside the clamping plate 608 , and a first magnetic core 7 is fixedly installed inside the movable side clamp arm 3 .

[0026] Specifically, the first magnetic core 7 and the second magnetic core 8 can couple high-frequency current signals to sense high-frequency current signals.

[0027] A through opening matched with the tooth plate 603 is formed inside the fixed clamp arm 2 , and one end of the tooth plate 603 passes through the through opening and is fixedly connected to the surface of the clamping plate 608 .

[0028] Specifically, the through opening is provided so that the tooth plate 603 passes through the through opening and is fixedly connected to one end of the clamping plate 608 , and at the same time the tooth plate 603 can move in the through opening.

[0029] The outer surface of the tooth plate 603 meshes with the surface of the gear 605 , and one end of the two telescopic rods 607 away from the clamping plate 608 is fixedly connected to the inner wall of the fixed clamp arm 2 .

[0030] Specifically, the meshing relationship between the gear 605 and the tooth plate 603 can limit the movement of the tooth plate 603, and at the same time, the telescopic rod 607 can provide stable support for the movement of the clamping plate 608.

[0031] A slide groove is formed on the top outer surface of the rectangular box 601 , and one end of the movable rod 606 passes through the slide groove and extends to the outside of the rectangular box 601 .

[0032] Specifically, when the movable rod 606 moves, it can move in the rectangular box 601 through the sliding groove.

[0033] In summary, the handheld high-frequency current sensor is provided with a handle shell 1, a fixed clamp arm 2, a movable side clamp arm 3, a push block 4 and a matching adjustment component 6. The movable side clamp arm 3 is driven to open by pressing the push block 4 to form an opening, and the conductor is placed between the movable side clamp arm 3 and the clamping plate 608. The position of the clamping plate 608 is adjusted according to the width of the conductor so that the clamping plate 608 is in full contact with the conductor. The tooth plate 603 is driven to move by pulling the movable rod 606, and the tooth plate 603 causes the clamping plate 608 to change its position, thereby fixing conductors of different models and types, and the magnetic field generated by the local discharge high-frequency current of the measured conductor can be more sensitively sensed through the first magnetic core 7 and the second magnetic core 8.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld high-frequency current sensor, comprising a handle housing (1), characterized in that: A fixed clamp arm (2) is fixedly mounted on one end of the handle housing (1), a movable side clamp arm (3) is rotatably mounted on one end of the handle housing (1) away from the fixed clamp arm (2), a pressing block (4) is movably mounted on the surface of the handle housing (1), and an adjusting component (6) is arranged inside the fixed clamp arm (2); The adjustment assembly (6) comprises a rectangular box (601), the outer side of the fixed clamp arm (2) is fixedly mounted with the rectangular box (601), the left inner wall of the rectangular box (601) is fixedly mounted with a return spring (602), the end of the return spring (602) away from the rectangular box (601) is fixedly mounted with a tooth plate (603), the interior of the rectangular box (601) is rotatably mounted with a rotating shaft (604), the outer surface of the rotating shaft (604) is fixedly mounted with a gear (605), one end of the tooth plate (603) is fixedly mounted with a movable rod (606), the inner wall of the fixed clamp arm (2) is movably mounted with a clamping plate (608), and the inner wall of the clamping plate (608) is fixedly mounted with two telescopic rods (607).

2. A handheld high-frequency current sensor according to claim 1, characterized in that: A hanging rope (5) is fixedly mounted on one end of the handle housing (1), and the hanging rope (5) is made of elastic material. The pressing block (4) is connected to the movable side clamp arm (3) by rotation.

3. A handheld high-frequency current sensor according to claim 1, characterized in that: A second magnetic core (8) is installed inside the clamping plate (608), and a first magnetic core (7) is fixedly installed inside the movable side clamp arm (3).

4. A handheld high-frequency current sensor according to claim 1, characterized in that: The interior of the fixed clamp arm (2) is provided with a through opening adapted to the tooth plate (603), and one end of the tooth plate (603) passes through the through opening and is fixedly connected to the surface of the clamping plate (608).

5. A handheld high-frequency current sensor according to claim 1, characterized in that: The outer surface of the toothed plate (603) meshes with the surface of the gear (605), and the ends of the two telescopic rods (607) away from the clamping plate (608) are fixedly connected to the inner wall of the fixed clamp arm (2).

6. A handheld high-frequency current sensor according to claim 1, characterized in that: A sliding groove is provided on the top outer surface of the rectangular box (601), and one end of the movable rod (606) passes through the sliding groove and extends to the outside of the rectangular box (601).

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