High-precision open-close type current transformer

Abstract

The utility model discloses a high-precision open-close type current transformer which comprises a transformer body divided into an upper end and a lower end, one side of the upper end and one side of the lower end are connected through a hinge, and the high-precision open-close type current transformer is characterized in that sliding blocks are arranged on the surfaces of the upper end and the lower end, the central parts, located at the upper end and the lower end, of the sliding blocks are designed to be of a T-shaped structure, and cushion blocks are arranged at the two ends of the sliding blocks; the first clamping mechanism and the second clamping mechanism are used for being matched with the sliding block, the cushion block is used for supporting the first clamping mechanism or the second clamping mechanism, the mutual inductor is stabilized on the wire, the first clamping mechanism at the lower end and the second clamping mechanism at the upper end are pushed towards the center of the mutual inductor at the same time, and the mutual inductor is clamped. In other words, the connecting arms at the upper end and the lower end can clamp the wire at the same time, then bolts penetrate through the positioning holes in the surface of the extension plate, the bolts are tightened through nuts, and therefore the connecting arms at the upper end and the lower end can be firmly clamped on the wire, the mutual inductor can be fixed to the wall without other fixing devices, and overall installation is fast.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of current transformer, concretely relates to a high accuracy open-close type current transformer. BACKGROUND

[0002] The open-close type current transformer is a kind of power instrument for measuring alternating current, and its principle is to measure current by electromagnetic induction method.The open-close type current transformer is composed of a core, a primary winding, a secondary winding and a contact, etc.The primary winding generates magnetic flux when energized, and the magnetic flux changes with the change of primary current.The corresponding electromotive force is generated in the secondary winding, and if the load is connected, current will be generated in the secondary winding, which is proportional to the primary current.

[0003] According to the application number: 202220149235.7, a kind of high accuracy open-close type current transformer, hexagonal cylinder head screw is disclosed, pass through hole and nut B cooperation, rotate towards the center of mutual inductor primary cable, it is fixed that mutual inductor, screw end part is provided with rubber pad, it is fixed in each of four directions before and after, installation firm, reliable;Primary cable size can be installed, can meet the requirement by adjusting screw length.

[0004] In the patent, four screws are used to fasten at the wire to fix the mutual inductor, and the operation of multiple screws will be fixed, which reduces the installation efficiency of the staff, and each screw needs to be sleeved with a rubber pad subsequently, which is easy to be separated from the rubber pad due to the extrusion effect when tightening the screw, so that the screw directly contacts the outer wall of the wire, causing damage to the wire. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of high accuracy open-close type current transformer, to solve the installation efficiency and wire damage problem in prior art.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A kind of high accuracy open-close type current transformer, including the mutual inductor body being divided into upper end and lower end, the upper end and lower end one side hinge connection, the upper end and lower end surface are each equipped with slider, the slider is located the center part of upper end and lower end and is designed as T shape structure, the two ends of the slider are equipped with pad block;First clamping mechanism;Second clamping mechanism, the first clamping mechanism and second clamping mechanism structure are same, the first clamping mechanism and second clamping mechanism are used to mutually cooperate with slider, wherein pad block is used to support first clamping mechanism or second clamping mechanism.

[0008] Further, the first clamping mechanism comprises a connecting arm and an extension arm, the extension arm is symmetrically distributed on both sides of the connecting arm, the extension arm is provided with a sliding groove matched with the sliding block, and the connecting arm is provided with an extension plate at one end.

[0009] Further, the connecting arm is in an arc structure, the cushion block is in an arc structure, and the connecting arm and the cushion block are matched with each other.

[0010] Further, the top of the connecting arm is provided with anti-skid teeth.

[0011] Further, the anti-skid teeth are made of rubber material.

[0012] Further, the connecting arm is in a rectangular shape.

[0013] The technical scheme of the utility model has the following beneficial effects:

[0014] 1. The transformer is stably arranged on the wire, the first clamping mechanism at the lower end and the second clamping mechanism at the upper end are simultaneously pushed to the center of the transformer, the connecting arms at the upper end and the lower end are simultaneously clamped on the wire, then the positioning holes on the surface of the extension plate pass through the bolts, the bolts are fastened through the nuts, so that the connecting arms at the upper end and the lower end are firmly clamped on the wire, the transformer does not need other fixing devices to be fixed on the wall, the whole installation is fast, and the rubber material directly contacts the wire and does not damage the outer surface of the wire.

[0015] 2. The extension arm is installed in a sliding mode through the cooperation of the sliding block and the sliding groove, the type of the connecting arm can be conveniently replaced when corresponding wires with different diameters are used, and the installation convenience is improved. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0017] Figure 1 It is the whole structure schematic view of the present application.

[0018] Figure 2 It is the whole deformation structure schematic view of the present application.

[0019] Figure 3 It is the split structure schematic view of the present application.

[0020] Figure 4 It is the clamping mechanism schematic view of the present application.

[0021] Figure 5 It is the connecting arm form drawing of the present application.

[0022] The reference signs: 10, upper end; 11, lower end; 12, mounting foot; 13, wire; 20, sliding block; 21, pad block; 30, first clamping mechanism; 31, connecting arm; 32, extension plate; 33, positioning hole; 34, lengthened arm; 35, sliding groove; 36, anti-skid tooth; 40, second clamping mechanism. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will combine the drawings and embodiments to make the present application further detailed description. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0024] Embodiment one:

[0025] Reference Figure 1 And Figure 2 A high-precision open-close type current transformer, comprising a transformer body divided into an upper end 10 and a lower end 11, the upper end 10 and the lower end 11 are hingedly connected on one side, the upper end 10 and the lower end 11 are both provided with a sliding block 20, the sliding block 20 is located at the center of the upper end 10 and the lower end 11 and is designed in a T-shaped structure, and the two ends of the sliding block 20 are provided with a pad block 21.

[0026] In the above scheme, the wire 13 is inserted into the transformer, the upper end 10 and the lower end 11 are rotated to open, the wire is placed into the transformer, and the upper end 10 and the lower end 11 are closed, and the other end of the upper end 10 and the lower end 11 is connected by bolt positioning.

[0027] Reference Figures 1-4, a first clamping mechanism 30; a second clamping mechanism 40, the first clamping mechanism 30 and the second clamping mechanism 40 are structurally identical, and the first clamping mechanism 30 and the second clamping mechanism 40 are used for cooperation with the sliding block 20, wherein the pad 21 is used for supporting the first clamping mechanism 30 or the second clamping mechanism 40. The first clamping mechanism 30 comprises a connecting arm 31 and an extended arm 34, the extended arm 34 is symmetrically distributed on both sides of the connecting arm 31, one side of the extended arm 34 is provided with a sliding groove 35 matched with the sliding block 20, and one end of the connecting arm 31 is provided with an extension plate 32, and the surface of the extension plate 32 is provided with a positioning hole 33.

[0028] In the above scheme, the lower end 11 is taken as a reference: the extended arm 34 can be freely moved up and down through the cooperation of the sliding block 20 and the sliding groove 35; the setting of the extended arm 34 can extend the distance of the upward displacement of the connecting arm 31, so that the connecting arm 31 can be conveniently contacted on the surface of the wire 13, and when the extended arm 34 is displaced, the extended arm 34 can be conveniently moved by pressing the lower side of the extended arm 34; continuously moving the extended arm 34 upwards can disassemble the extended arm 34; and the maximum distance of the downward displacement of the extended arm 34 is supported by the pad 21, and the pad 21 is supported on the connecting arm 31, that is, the pad 21 can limit the downward displacement of the extended arm 34 to prevent the extended arm 34 from being separated from the sliding block 20.

[0029] When it is necessary to stabilize the mutual inductor on the wire 13, the first clamping mechanism 30 of the lower end 11 and the second clamping mechanism 40 of the upper end 10 are simultaneously pushed to the center of the mutual inductor, that is, the connecting arms 31 at the upper and lower ends are simultaneously clamped on the wire 13, then the positioning hole 33 on the surface of the extension plate 32 passes through the bolt, and the bolt is tightened through the nut, so that the connecting arms 31 at the upper and lower ends are firmly clamped on the wire 13, so that the mutual inductor does not need other fixing devices to be fixed on the wall.

[0030] Further reference Figure 2 And Figure 3 The connecting arm 31 is in an arc structure, the pad 21 is in an arc structure, and the connecting arm 31 and the pad 21 are mutually fitted. The connecting arm 31 in the arc structure can be completely fitted below the pad 21, so as to stably limit the distance of the connecting arm 31, and the connecting arm 31 in the arc structure can be well fitted on the surface of the wire 13, thereby improving the stability of the mutual inductor fixed on the wire 13.

[0031] Further reference Figure 3 The top of the connecting arm 31 is provided with an anti-skid tooth 36. Through the contact of the anti-skid tooth 36 with the wire 13, the stability of the mutual inductor fixed on the wire 13 can be further improved; and the loosening or falling phenomenon of the mutual inductor in the use process can be effectively prevented.

[0032] Further, the anti-skid teeth 36 are made of rubber material. The rubber material has good elasticity and friction, which can further enhance the anti-skid effect and ensure that the transformer is more firmly fixed on the wire. In addition, the rubber material also has certain wear resistance and corrosion resistance, which can maintain its performance stability during long-term use. And the rubber material directly contacts with the wire 13 without damaging the outer surface of the wire 13.

[0033] Embodiment two:

[0034] Reference Figure 5 The connecting arm 31 is rectangular. The arc-shaped connecting arm 31 is suitable for thicker wires 13. When the corresponding wire 13 is a thin wire, the connecting arm 31 can be set to be rectangular to increase the width of the connecting arm 31, so as to facilitate the connecting arm 31 to be pressed on the wire 13. And because the connecting arm 31 is installed in a sliding mode, when corresponding to wires 13 of different thicknesses, the model of the connecting arm 31 can be conveniently replaced, improving the installation convenience. The lower end 11 is provided with a mounting foot 12 for fixing the transformer on the wall.

[0035] The specific implementation process of the embodiment is as follows:

[0036] The transformer is stably fixed on the wire 13, and the first clamping mechanism 30 of the lower end 11 and the second clamping mechanism 40 of the upper end 10 are simultaneously pushed to the center of the transformer, that is, the connecting arms 31 of the upper and lower ends are simultaneously clamped on the wire 13, then the positioning hole 33 on the surface of the extension plate 32 passes through the bolt, and the bolt is tightened through the nut, so that the connecting arms 31 of the upper and lower ends are firmly clamped on the wire 13.

[0037] When corresponding to wires 13 of different thicknesses, the model of the connecting arm 31 is arc-shaped or rectangular.

[0038] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Various modifications or equivalent replacements can be made to the present application within the spirit and protection scope of the present application. Such modifications or equivalent replacements should also be considered to fall within the protection scope of the present application.

[0039] In the description of the present application, it should be explained that the terms "in", "front", "back", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only used for the convenience of describing the present application and simplifying the face description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, these terms indicating the orientation or positional relationship should not be understood as a limitation on the present application.

[0040] In the description of the utility model, need further explain, unless another explicit provision and limitation. The term "set", "connection" should be broad understanding, for example, these terms can express element between fixed connection, detachable connection or integral connection;It can also express mechanical connection, electrical connection;It can also make express direct connection or indirectly through the intermediate medium. For ordinary skilled person in the art, can understand the specific meaning of these terms in the utility model according to specific circumstances.

Claims

1. A high-precision open-close current transformer comprising a transformer body divided into an upper end (10) and a lower end (11), the upper end (10) and the lower end (11) being hingedly connected on one side, characterized in that: The upper end (10) and the lower end (11) are both provided with a sliding block (20), the sliding block (20) is located at the central part of the upper end (10) and the lower end (11) and is designed in a T-shaped structure, and the two ends of the sliding block (20) are provided with a pad (21); A first clamping mechanism (30) and a second clamping mechanism (40), the first clamping mechanism (30) and the second clamping mechanism (40) are the same in structure, and the first clamping mechanism (30) and the second clamping mechanism (40) are both used for cooperating with the sliding block (20), and the pad (21) is used for supporting the first clamping mechanism (30) or the second clamping mechanism (40).

2. A high-precision open-close current transformer according to claim 1, characterized in that: The first clamping mechanism (30) comprises a connecting arm (31) and an extended arm (34), the extended arm (34) is symmetrically distributed on the two sides of the connecting arm (31), one side of the extended arm (34) is provided with a sliding groove (35) matched with the sliding block (20), one end of the connecting arm (31) is provided with an extension plate (32), and the surface of the extension plate (32) is provided with a positioning hole (33).

3. A high-precision open-close current transformer according to claim 2, characterized in that: The connecting arm (31) is in an arc-shaped structure, and the pad (21) is in an arc structure, and the connecting arm (31) and the pad (21) are matched with each other.

4. A high-precision open-close current transformer according to claim 3, characterized in that: The top of the connecting arm (31) is provided with an anti-skid tooth (36).

5. A high-precision open-close current transformer according to claim 4, characterized in that: The anti-skid tooth (36) is made of rubber material.

6. A high-precision open-close current transformer according to claim 2, characterized in that: The connecting arm (31) is in a rectangular shape.

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