Voltage transformer iron core

Abstract

The utility model relates to the technical field of voltage transformer iron cores, in particular to a voltage transformer iron core which comprises a first iron core shell, an iron core body is installed in the first iron core shell, a second iron core shell is movably installed on the outer side wall of the first iron core shell, and a plurality of fixing mechanisms are arranged on the surface of the upper end of the second iron core shell. A plurality of arc-shaped slots are formed in the surface of the upper end of the iron core shell II in a penetrating manner, arc-shaped insertion plates are inserted into the arc-shaped slots, and one end of each arc-shaped insertion plate is fixedly connected with the iron core shell I. According to the utility model, the plurality of fixing mechanisms are arranged, so that the iron core body can be positioned and fixed, and infirm fixation of the iron core is effectively avoided; and the second iron core shell and the first iron core shell can be conveniently separated through the check block, the fixed block, the rotating plate and the like, so that the large area of the iron core body is exposed outside, and compared with an existing totally-closed or partially-split iron core, the iron core is more convenient to overhaul and operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a voltage transformer core technical field, specifically is a voltage transformer core. BACKGROUND

[0002] Voltage transformer is an instrument for voltage transformation, and generally has a core in the voltage transformer. The core is a core component of the voltage transformer, and its main function is to convert the voltage signal into a corresponding current signal through the magnetic circuit.

[0003] In the prior art, such as the current transformer core in patent application number "CN202222682649.9", the utility model discloses a shell, a core body, a top cover, a side plate and a movable buckle are arranged, a split type structure design is adopted, the core can be freely installed and replaced, the magnetization of the core is avoided to reduce the use effect, and the convenience of the core during use is improved.

[0004] However, in the above patent application, when the core body is installed in the shell, it cannot be positioned and fixed, and the core body is not fixed firmly, which causes the core body to vibrate during subsequent use, generates noise, and even increases the magnetic circuit air gap, reducing the measurement accuracy. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a voltage transformer core to solve the problems in the above background technology.

[0006] The purpose of the utility model can be realized by the following technical scheme:

[0007] A voltage transformer core, comprising a core shell one, a core body is installed inside the core shell one, a core shell two is movably installed on the outer side wall of the core shell one, a plurality of fixing mechanisms are arranged on the upper end surface of the core shell two, a plurality of arc-shaped insertion grooves are formed in the upper end surface of the core shell two, a plurality of arc-shaped insertion plates are inserted into the arc-shaped insertion grooves, and one end of the arc-shaped insertion plate is fixedly connected with the core shell one.

[0008] The fixing mechanism comprises a mounting groove, a groove and a fixing nail, the mounting groove is formed in the upper end surface of the core shell two, the groove is formed in the upper end surface of the core shell two and is close to the edge of the mounting groove, the fixing nail is inserted into the outer wall of the core shell two, and a double-headed threaded rod is rotatably connected in the mounting groove.

[0009] Preferably, the double-headed threaded rod is sleeved with a movable block at positions close to both ends of the outer portion, one movable block is fixedly connected with an arc-shaped clamping plate two at the bottom end, the other movable block is fixedly connected with an arc-shaped clamping plate one at the bottom end, the groove is rotatably connected with a knob, and the knob is fixedly connected with one end of the double-headed threaded rod.

[0010] Preferably, the knob outer side wall is provided with a plurality of fixing holes, and the fixing nail fixing hole is matched.

[0011] Preferably, the two inner side walls of the mounting groove are provided with limiting sliding grooves, two limiting sliding blocks are slidably connected inside the two limiting sliding grooves, and one end of the two limiting sliding blocks is respectively fixedly connected with the two double-headed threaded rods.

[0012] Preferably, the upper end surface of the arc-shaped plug-in plate is rotatably connected with two rotating plates through shaft rods, the upper end surfaces of the two rotating plates are both provided with two through grooves, and two fixed blocks are inserted into the two through grooves.

[0013] Preferably, the upper end surface of the fixed block is fixedly connected with a connecting bolt, and the connecting bolt is externally sleeved with a stop block.

[0014] Preferably, the inner wall of the iron core shell one is fixedly connected with a plurality of cooling fins, and the outer wall of the iron core shell one is provided with a plurality of cooling holes.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The rotating knob drives the double-headed threaded rod to rotate, moves the two movable blocks along the double-headed threaded rod, and moves closer to each other, clamps and positions the arc-shaped clamping plate one, and accurately positions and fixes the position of the iron core body. Similarly, the other several groups of arc-shaped clamping plate one and arc-shaped clamping plate two are used to position and fix the iron core body at the same time, which can effectively avoid the looseness of the iron core, resulting in vibration during use, noise, and serious air gap increase of the magnetic circuit, reducing the measurement accuracy.

[0017] 2. In the present application, the stop block is rotated by 90 degrees along the connecting bolt, so that the positioning between the rotating plate and the fixed block is released, and then the rotating plate is turned out of the fixed block, so that the iron core shell two is moved away from the iron core shell one, until the iron core shell two is completely separated from the iron core shell one. At this time, the iron core body is exposed to a large area, and the maintenance operation is more convenient compared with the existing fully enclosed or partially separated iron core. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, other drawings can also be obtained by those skilled in the art without creative labor;

[0019] Figure 1 is the overall structure schematic view of the present application;

[0020] Figure 2 is the utility model Figure 1 the enlarged view of A in the middle;

[0021] Figure 3 is the utility model Figure 1 the enlarged view of B in the middle;

[0022] Figure 4 is the structure schematic view of the iron core shell one and the iron core body in the utility model;

[0023] Figure 5 is the structure schematic view of the arc clamping plate one, the double -end threaded rod and the arc clamping plate two in the utility model.

[0024] The figure mark is as follows in the drawing:

[0025] 1, iron core shell one;2, iron core shell two;3, installation groove;4, double -end threaded rod;5, movable block;6, recess;7, knob;8, fixed nail;9, fin;10, heat dissipation hole;11, arc clamping plate one;12, arc clamping plate two;13, limit sliding slot;14, limit sliding block;15, arc plugboard;16, arc slot;17, rotating plate;18, fixed block;19, connecting bolt;20, through groove;21, stop block;22, iron core body. Specific implementation

[0026] The technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, instead of all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making the creative labor belong to the range of the utility model protection.

[0027] A kind of voltage transformer iron core, as shown in Fig. Figures 1-5 It includes iron core shell one 1, iron core body 22 is installed in the inside of iron core shell one 1, iron core shell two 2 is movably installed in the outer side wall of iron core shell one 1, a plurality of fixed mechanisms are arranged on the upper end surface of iron core shell two 2, a plurality of arc-shaped insertion slots 16 are throughly provided on the upper end surface of iron core shell two 2, a plurality of arc-shaped plugboards 15 are inserted in the plurality of arc-shaped insertion slots 16, and the arc-shaped plugboard 15 one end is fixedly connected with iron core shell one 1, the fixed mechanism includes installation groove 3, recess 6 and fixed nail 8, installation groove 3 is throughly provided on the upper end surface position of iron core shell two 2, recess 6 is provided on the upper end surface of iron core shell two 2 and is close to the edge position of installation groove 3, fixed nail 8 is inserted in the outer wall position of iron core shell two 2, double-end threaded rod 4 is rotatably connected in the inside of installation groove 3.

[0028] The outer part of the double-headed threaded rod 4 is sleeved with a movable block 5 near both ends, one of which is fixedly connected with an arc-shaped clamping plate two 12 at the bottom, and the other is fixedly connected with an arc-shaped clamping plate one 11 at the bottom. The recess 6 is rotationally connected with a knob 7, and the knob 7 is fixedly connected with one end of the double-headed threaded rod 4. A plurality of fixing holes are formed in the outer side wall of the knob 7, and the fixing nails 8 are fixedly connected with the fixing holes. Limiting sliding grooves 13 are formed in the two inner side walls of the mounting groove 3. Two limiting sliding blocks 14 are slidably connected in the two limiting sliding grooves 13, and one end of each limiting sliding block 14 is fixedly connected with one of the double-headed threaded rods 4. Thread holes are formed in the inner wall of the sleeve joint between the movable block 5 and the double-headed threaded rod 4, which are matched with the double-headed threaded rod 4. Under the cooperation of the thread and the limitation of the limiting sliding block 14 and the limiting sliding groove 13, the movable block 5 can move along the double-headed threaded rod 4 in the mounting groove 3, and the thread rotation directions of the double-headed threaded rods 4 at both ends are opposite. When rotating, the two movable blocks 5 can be brought closer to each other.

[0029] In use, the knob 7 is rotated to drive the double-headed threaded rod 4 to rotate, drive the two movable blocks 5 to move along the double-headed threaded rod 4 and move closer to each other, and drive the arc-shaped clamping plate one 11 and the movable block 5 to move, so that the arc-shaped clamping plate one 11 tightly abuts the outer wall position of the iron core body 22. The arc-shaped clamping plate one 11 tightly abuts the outer wall position of the iron core body 22 to clamp and position the arc-shaped clamping plate one 11, accurately position and fix the position of the iron core body 22, then insert the fixing nails 8 through the iron core shell two 2 into the corresponding fixing holes, and the position of the knob 7 can be fixed, so that the double-headed threaded rod 4 is prevented from rotating subsequently, the arc-shaped clamping plate one 11 and the arc-shaped clamping plate two 12 stably clamp and fix the iron core body 22, and the iron core body 22 is prevented from being fixed insecurely, which causes vibration and noise during use, and seriously affects the measurement accuracy due to the increase of the magnetic circuit air gap.

[0030] The arc-shaped plugboard 15 is rotationally connected with two rotating plates 17 through shaft rods at the upper end surface, two through grooves 20 are formed in the upper end surfaces of the two rotating plates 17, and fixing blocks 18 are inserted into the two through grooves 20, and the bottom ends of the fixing blocks 18 are fixedly connected with the iron core shell two 2.

[0031] The connecting screw 19 is fixedly connected with the upper end surface of the fixing block 18, the stop block 21 is sleeved with the connecting screw 19, the inner wall of the sleeve joint between the stop block 21 and the connecting screw 19 is provided with a thread matched with the connecting screw 19, and when the stop block 21 is rotated, the stop block 21 can be locked with the connecting screw 19 under the cooperation of the thread, and the locking can be released by reversing.

[0032] The inner wall of the iron core shell one 1 is fixedly connected with a plurality of radiating fins 9, and a plurality of radiating holes 10 are formed through the outer wall of the iron core shell one 1, the radiating fins 9 are closely attached to the outer wall of the iron core body 22, so that the heat generated by the iron core body 22 during work can be absorbed and conducted by the radiating fins 9, and radiated, and the radiated heat can be radiated from the inside of the iron core shell one 1 through the radiating holes 10, the heat dissipation performance of the iron core body 22 is improved, overheating is avoided, and normal work is affected.

[0033] Specifically, when the iron core body 22 needs to be overhauled, first, the fixing mechanism is removed from the iron core body 22, then only the stop block 21 needs to be rotated 90° along the outside of the connecting bolt 19, so that the stop block 21 is completely located on the upper surface of the fixing block 18, the resistance to the rotating plate 17 is removed, so that the limiting and fixing between the rotating plate 17 and the fixing block 18 is removed, at this time, the rotating plate 7 is rotated, so that one end of the rotating plate 7 cooperates with the through groove 20 and is turned out of the fixing block 18, and the other rotating plate 17 is turned out of the fixing block 18 in the same way, and the other rotating plates 17 are rotated, so that the other rotating plates 17 are in a vertical state, at this time, the iron core shell two 2 can be moved away from the iron core shell one 1 along the outside of the arc-shaped insertion plate 15 and the outside of the rotating plates 17, until the iron core shell two 2 is completely removed, at this time, the iron core body 22 is exposed in a large area, and can be overhauled, compared with the existing fully enclosed or partially sectional type iron core, the overhaul operation is more convenient.

[0034] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A voltage transformer core comprising a core housing (1), characterized in that The iron core shell one (1) is internally installed with an iron core body (22), the outer wall of the iron core shell one (1) is movably installed with an iron core shell two (2), the upper end surface of the iron core shell two (2) is provided with a plurality of fixing mechanisms, a plurality of arc-shaped insertion grooves (16) are formed through the upper end surface of the iron core shell two (2), a plurality of arc-shaped insertion plates (15) are inserted into the arc-shaped insertion grooves (16), and one end of the arc-shaped insertion plate (15) is fixedly connected with the iron core shell one (1). The fixing mechanism comprises a mounting groove (3), a groove (6) and a fixing nail (8), the mounting groove (3) is formed through the upper end surface of the iron core shell two (2), the groove (6) is formed on the upper end surface of the iron core shell two (2) and is close to the edge of the mounting groove (3), and the fixing nail (8) is inserted into the outer wall of the iron core shell two (2). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3).

2. A voltage transformer core according to claim 1, characterised in that The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). The double-headed threaded rod (4) is rotatably connected inside the mounting groove (3). 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A voltage transformer core according to claim 1, characterized in that ​ 6. A voltage transformer core according to claim 5, characterised in that ​ 7. A voltage transformer core according to claim 1, characterized in that ​

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