Positioning device of transformer iron core grounding current detector

Abstract

The utility model discloses a positioning device of a transformer iron core grounding current detector, which is applied to a ground wire, a detection mechanism used for detecting current is arranged on the outer side of the ground wire, the detection mechanism comprises a current detection device, a first detection clamp, a second detection clamp and an elastic connecting piece, the current detection device is arranged on one side of the ground wire, and the first detection clamp and the second detection clamp are arranged on the other side of the ground wire. A first detection clamp is fixedly arranged on one side of the surface of the current detection device, a second detection clamp is arranged on one side of the first detection clamp, an elastic connecting piece is arranged between the first detection clamp and the second detection clamp, and the first detection clamp and the second detection clamp are electrically connected with the current detection device. And a clamping mechanism for fixing is arranged on the outer side surface of the current detection device. The current detection equipment is convenient to install, even if the ground wire is installed, the current detection equipment can be directly sleeved on the outer side surface of the ground wire rapidly, installation is completed rapidly, and follow-up disassembly, maintenance and replacement work can be facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer detection technical field, concretely is a kind of positioning device of transformer core grounding current detector. BACKGROUND

[0002] Grounding current detector is a kind of equipment for detecting grounding current in electrical system and transformer system, mainly used to ensure the safe operation of electrical system, prevent electric shock, fire and other accidents caused by grounding fault. It can monitor and identify the leakage current or grounding fault current in the system, help take timely measures.

[0003] And in prior art, in order to ensure that the transformer can work normally, the grounding of transformer core is one of the necessary steps, in prior art, when the grounding of transformer core needs to be detected, grounding current detector needs to be fixed on ground wire, and in prior art, such detection device is generally directly sleeved and fixed on ground wire and then screwed to be extruded and fixed, such as a kind of transformer core grounding current monitor of Chinese patent with application number 202320763599.9, but such installation has disadvantages, that is, cable needs to be passed through equipment and then fixed, if grounding cable has been fixed, it is more troublesome to want to add this detection equipment at this time, therefore, a kind of positioning device of transformer core grounding current detector needs to be improved for this problem. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of positioning device of transformer core grounding current detector, to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of positioning device of transformer core grounding current detector, it is applied to ground wire, the detection mechanism for detecting current is arranged on the outer side of the ground wire, the detection mechanism includes current detection device, first detection clamp, second detection clamp, elastic connecting piece, the current detection device is arranged on one side of the ground wire, first detection clamp is fixedly arranged on the surface side of the current detection device, second detection clamp is arranged on the side of the first detection clamp, elastic connecting piece is arranged between the first detection clamp and second detection clamp, the first detection clamp and second detection clamp are electrically connected between current detection device, the clamping mechanism for fixing is arranged on the outer side surface of the current detection device.

[0006] Preferably, the clamping mechanism includes a sliding groove, a clamping plate, a screw rod, a connecting rod, the outer surface of the current detection device is provided with a sliding groove, the clamping plate is movably clamped in the sliding groove through a sliding block, the surface of the current detection device is movably provided with a screw rod through a bearing, the clamping plates are fixedly provided with a connecting rod, and the connecting rod is movably sleeved on the outer surface of the screw rod through threads, so that the cable detection device can be clamped and positioned on the outer surface of the ground wire through the clamping mechanism.

[0007] Preferably, the inner side wall of the clamping plate is provided with a rubber pad, so that the friction of the inner side wall of the clamping plate is increased, and the stability of the clamping plate clamped on the outer surface of the ground wire is improved.

[0008] Preferably, the surface of the screw rod is provided with a cross groove, so that the screw rod can be rotated by a screwdriver to move the clamping plate, and the clamping plate is clamped on the outer surface of the ground wire to fix and position the current detection device.

[0009] Preferably, the threads on the two sides of the surface of the screw rod are opposite, so that the two clamping plates can be moved in opposite directions at the same time when the screw rod is rotated, and the two clamping plates can be clamped at the same time by moving towards the middle part, so that the clamping center of the device is in the middle part of the device, and the clamping of the device is improved, thereby further improving the clamping and fixing effect of the device.

[0010] Preferably, the outer surface of the first detection clamp is provided with a clamping block, and the outer surface of the second detection clamp is provided with an elastic buckle; the first detection clamp and the second detection clamp can be fixed quickly by clamping the elastic buckle on the outer surface of the clamping block, and the metal semicircles in the first detection clamp and the second detection clamp can be combined to form a complete annular metal ring.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、The first detection clamp and the second detection clamp can be clamped and sleeved on the outer surface of the ground wire after the ground wire is installed, so that the current detection equipment can be connected through the installation mode of the wire terminal without disassembling the ground wire, so that the device can be conveniently installed on the outer surface of the ground wire, the installation is quickly completed, and subsequent disassembly, maintenance and replacement work can be conveniently performed.

[0013] 2, the utility model discloses a screw rotation makes the clamping plate each other close, to make the clamping plate steady clamping fixed in the electric property outside surface, can guarantee the installation stability of the whole device, and clamping is convenient and only needs to rotate screw to make the clamping plate carry out the clamping to complete the fixing, positioning of the device, and the device is fixed and is clamped, and two clamping plates can be close to the middle part simultaneously and clamp, so this can guarantee the clamping center of the device to be in the middle part of the device, so make the device clamping, can further improve the clamping fixed effect of the device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the positioning device overall structure schematic view of a transformer iron core grounding current detection instrument of the utility model;

[0015] Figure 2 It is the rear view of a transformer iron core grounding current detection instrument of the utility model positioning device Figure One ;

[0016] Figure 3 It is the rear view of a transformer iron core grounding current detection instrument of the utility model positioning device Figure Two ;

[0017] Figure 4 It is the side view of a transformer iron core grounding current detection instrument of the utility model positioning device;

[0018] Figure 5 It is the overall structure view of screw of a transformer iron core grounding current detection instrument of the utility model positioning device.

[0019] In the drawing: 1, ground wire;2, current detection device;3, first detection clamp;4, second detection clamp;5, elastic connecting piece;6, sliding slot;7, clamping plate;8, screw;9, connecting rod;10, cross recess;11, clamping block;12, elastic buckle. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] Please refer to Figures 1-5The utility model provides a technical scheme: a positioning device of transformer core grounding current detection instrument is applied to ground wire 1, the detection mechanism for detecting current is arranged on the outer side of ground wire 1, the detection mechanism includes current detection device 2, first detection forceps 3, second detection forceps 4, elastic connecting piece 5, one side of ground wire 1 is provided with current detection device 2, the surface one side of current detection device 2 is fixedly provided with first detection forceps 3, one side of first detection forceps 3 is provided with second detection forceps 4, and elastic connecting piece 5 is arranged between first detection forceps 3 and second detection forceps 4, and the electric connection between first detection forceps 3, second detection forceps 4 and current detection device 2, the outer side surface of current detection device 2 is provided with the clamping mechanism for fixing.

[0022] The clamping mechanism includes chute 6, clamping plate 7, screw rod 8, connecting rod 9, the outer side surface of current detection device 2 is provided with chute 6, the inside of chute 6 is movably clamped with clamping plate 7 through the sliding block, the surface middle part of current detection device 2 is movably provided with screw rod 8 through bearing, connecting rod 9 is fixedly arranged between clamping plate 7, and the outer side surface of screw rod 8 is movably sleeved in the inside of connecting rod 9 through screw thread, and the cable detection device can be conveniently and quickly clamped and positioned on the outer side surface of ground wire 1 through the clamping mechanism;

[0023] The inner side wall of clamping plate 7 is provided with rubber pad, the friction of the inner side wall of clamping plate 7 can be increased through rubber pad, so that the stability of clamping plate clamped on the outer side surface of ground wire 1 is improved;

[0024] The surface one side of screw rod 8 is provided with cross recess 10, the cross recess 10 can be used to rotate screw rod 8 by screwdriver to make clamping plate 7 move, and the clamping of clamping plate 7 on the outer side surface of ground wire 1 is utilized, so that the fixing and positioning of current detection device 2 are completed;

[0025] The threads on the surface of the two sides of screw rod 8 are opposite, the screw rod 8 with opposite threads can drive two clamping plates 7 to move in opposite directions simultaneously when screw rod 8 rotates, so that the two clamping plates 7 can simultaneously move towards the middle part for clamping, so that the clamping center of the device can be in the middle part of the device, so that the device clamps, and the clamping fixing effect of the device can be further improved;

[0026] The outer side surface of first detection forceps 3 is provided with clamping block 11, and the outer side surface of second detection forceps 4 is provided with elastic buckle 12, the first detection forceps 3 and the second detection forceps 4 can be fixed quickly by the clamping of elastic buckle 12 on the outer side surface of clamping block 11, and at this time, the metal semicircles in the first detection forceps 3 and the second detection forceps 4 can be combined to form a complete annular metal ring.

[0027] Working principle: the ground current detection principle of the device is that the first detection clamp 3 and the second detection clamp 4 inside the device have a metal ring. When the first detection clamp 3 and the second detection clamp 4 are combined, a complete annular metal ring can be formed. At this time, if the ground wire 1 inside passes through alternating current, the alternating current passing through the ground wire 1 will generate an alternating magnetic field around it. This alternating magnetic field will induce an electromotive force in the annular metal ring formed by the first detection clamp 3 and the second detection clamp 4, and then generate an induced current. At this time, the current detection device 2 can calculate the size of the original current by measuring the size of the induced current;

[0028] If the ground wire 1 passes through direct current, the Hall effect sensor can be used for detection. The direct current in the ground wire 1 will also generate a constant magnetic field. At this time, the Hall effect sensor can sense this magnetic field and calculate the current value according to the magnetic field strength. In this way, the current in the ground wire 1 can also be detected.

[0029] In this way, the above detection principle makes it possible to install the device on the outer surface of the ground wire 1 after the installation of the ground wire 1 is completed, and only needs to combine the first detection clamp 3 and the second detection clamp 4 to clamp and set on the outer surface of the ground wire 1. Therefore, it is not necessary to disassemble the ground wire 1 and connect the current detection device through the terminal installation method. In this way, the device can be conveniently installed on the outer surface of the ground wire 1, and the installation can be quickly completed. Moreover, the subsequent disassembly, maintenance and replacement work can also be facilitated.

[0030] After the first detection clamp 3 and the second detection clamp 4 are combined and clamped and set on the outer surface of the ground wire 1, the clamping plates 7 can be brought close to each other by rotating the screw rod 8, so that the clamping plates 7 are stably clamped and fixed on the outer surface. Therefore, the installation stability of the device as a whole can be ensured, and the clamping plates 7 can be clamped by rotating the screw rod 8 to complete the fixation and positioning of the device. Moreover, the device is fixed in a clamped manner, and the two clamping plates 7 can be clamped at the same time by moving towards the middle. In this way, the clamping center of the device can be ensured to be at the middle of the device, so that the device is clamped, thereby further improving the clamping and fixing effect of the device.

[0031] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a transformer core grounding current detector, comprising a ground wire (1), characterized in that: The ground wire (1) is provided with a detection mechanism outside for detecting current, the detection mechanism comprises a current detection device (2), a first detection clamp (3), a second detection clamp (4) and an elastic connecting piece (5), one side of the ground wire (1) is provided with the current detection device (2), one side of the surface of the current detection device (2) is fixedly provided with the first detection clamp (3), one side of the first detection clamp (3) is provided with the second detection clamp (4), the elastic connecting piece (5) is arranged between the first detection clamp (3) and the second detection clamp (4), the first detection clamp (3) and the second detection clamp (4) are electrically connected with the current detection device (2), and the outer surface of the current detection device (2) is provided with a clamping mechanism for fixing.

2. The positioning device of a transformer core grounding current detector according to claim 1, characterized in that: The clamping mechanism comprises a sliding groove (6), a clamping plate (7), a screw rod (8) and a connecting rod (9), the outer surface of the current detection device (2) is provided with the sliding groove (6), the clamping plate (7) is movably clamped in the sliding groove (6) through a sliding block, the screw rod (8) is movably arranged on the surface of the current detection device (2) through a bearing, the connecting rod (9) is fixedly arranged between the clamping plates (7), and the connecting rod (9) is movably sleeved on the outer surface of the screw rod (8) through threads.

3. The positioning device of a transformer core grounding current detector according to claim 2, characterized in that: The inner side wall of the clamping plate (7) is provided with a rubber pad.

4. The positioning device of a transformer core grounding current detector according to claim 2, characterized in that: The surface of the screw rod (8) is provided with a cross recess (10) on one side.

5. The positioning device of a transformer core grounding current detector according to claim 2, characterized in that: The threads on the two sides of the surface of the screw rod (8) are opposite.

6. The positioning device of a transformer core grounding current detector according to claim 1, characterized in that: The outer surface of the first detection clamp (3) is provided with a clamping block (11), and the outer surface of the second detection clamp (4) is provided with an elastic buckle (12).

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