CN214672100U - Primary terminal voltage-sharing structure of current transformer - Google Patents
Primary terminal voltage-sharing structure of current transformer Download PDFInfo
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- CN214672100U CN214672100U CN202120861846.XU CN202120861846U CN214672100U CN 214672100 U CN214672100 U CN 214672100U CN 202120861846 U CN202120861846 U CN 202120861846U CN 214672100 U CN214672100 U CN 214672100U
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Abstract
The utility model discloses a primary terminal voltage-sharing structure of a current transformer, which comprises a transformer shell, wherein a special-shaped machine cavity is arranged at the bottom end of the transformer shell, a pulling block is arranged at the upper end of the machine cavity, springs are arranged at the inner top ends of the pulling block and the machine cavity, a connecting block is fixedly connected at the bottom end of the pulling block, two connecting rods are symmetrically and rotatably connected at the bottom end of the connecting block, and one end of each connecting rod, which is far away from the connecting block, is connected with a voltage equalizing part; the lower end of the machine cavity is provided with a slot, and a terminal is arranged in the slot. The utility model discloses can put into the slot with a terminal, can the manpower then overcome the elasticity of spring and push down the briquetting, the briquetting drives connecting block downstream, and the connecting block drives two connecting rods and keeps away from the motion each other, and the connecting rod drives two sliders and keeps away from the motion each other, and the slider passes through the connecting rod and presses the briquetting to evenly press the terminal, effectively solved prior art in the too simple problem of mounting structure.
Description
Technical Field
The utility model relates to a current transformer technical field especially relates to a current transformer's primary terminal voltage-sharing structure.
Background
The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary side winding of the transformer has few turns and is connected in a circuit of the current to be measured. Therefore, all current of a line always flows through the current transformer, the number of turns of the secondary side winding is large, the secondary side winding is connected in series in the measuring instrument and the protection loop, and the secondary side loop of the current transformer is always closed when the current transformer works, so that the impedance of the series coil of the measuring instrument and the protection loop is small, and the working state of the current transformer is close to a short circuit. The current transformer converts a large current on the primary side into a small current on the secondary side for measurement, and the secondary side can not be opened. The current in the lines of power generation, transformation, transmission, distribution and utilization is very different, from several amperes to several tens of thousands of amperes. For the convenience of measurement, protection and control, conversion to a more uniform current is required, and in addition, the voltage on the line is generally higher, which is very dangerous if the direct measurement is carried out. The current transformer plays the roles of current transformation and electric isolation [1 ].
For a pointer type ammeter, the secondary current of a current transformer is mostly in ampere level. For a digitizer, the sampled signal is typically in milliamps. The secondary current of the micro current transformer is milliampere level, and the micro current transformer mainly plays a role of a bridge between the large transformer and sampling. The miniature current transformer is also called as 'instrument current transformer'. The current transformer similar to the transformer also works according to the electromagnetic induction principle, the transformer converts voltage and the current transformer converts current, but the installation structure of the current transformer in the prior art is simpler, so that the current transformer is in urgent need of changing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem, and provides a primary terminal voltage-sharing structure of a current transformer.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a primary terminal voltage-sharing structure of a current transformer comprises a transformer shell, wherein a special-shaped machine cavity is formed in the bottom end of the transformer shell, a pull block is arranged at the upper end of the machine cavity, springs are arranged at the inner top ends of the pull block and the machine cavity, a connecting block is fixedly connected to the bottom end of the pull block, two connecting rods are symmetrically and rotatably connected to the bottom end of the connecting block, and a voltage-sharing piece is connected to one end, away from the connecting block, of each connecting rod;
the lower end of the machine cavity is provided with a slot, and a terminal is arranged in the slot.
Optionally, the pressure equalizing piece comprises a sliding block, a pressure rod and a pressure block;
the slider rotates with the connecting rod to be connected, the bottom of slider rotates and is connected with a plurality of depression bars, the one end that the slider was kept away from to the depression bar rotates and is connected with the briquetting.
Optionally, the pressing block is of a rectangular structure.
Optionally, one end of the sliding block, which is far away from the connecting rod, is fixedly connected with a limiting rod, and a limiting rod gap penetrates through a limiting block fixedly connected with the inner wall of the mutual inductor shell.
Optionally, the pull block and the connecting block are made of an integrally formed structure.
Compared with the prior art, the utility model discloses possess following advantage:
the utility model discloses can put into the slot with a terminal, can the manpower then overcome the elasticity of spring and push down the briquetting, the briquetting drives connecting block downstream, and the connecting block drives two connecting rods and keeps away from the motion each other, and the connecting rod drives two sliders and keeps away from the motion each other, and the slider passes through the connecting rod and presses the briquetting to evenly press the terminal, effectively solved prior art in the too simple problem of mounting structure.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a cross-sectional view of the middle engine cavity, the slot and the internal components of the present invention.
In the figure: 1 mutual inductor shell, 2 limiting rods, 3 sliding blocks, 4 pressing rods, 5 limiting blocks, 6 pressing blocks, 7 connecting rods, 8 connecting blocks, 9 pulling blocks, 10 machine cavities, 11 slots and 12 springs.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-2, a primary terminal voltage-sharing structure of a current transformer includes a transformer housing 1, and a closed iron core and a winding may be disposed in the transformer housing 1, which is the prior art and is not described herein again.
The bottom of mutual-inductor casing 1 has been seted up and has been adopted special-shaped machine chamber 10, and the upper end of machine chamber 10 is provided with draws piece 9, draws the interior top of piece 9 and machine chamber 10 to be provided with spring 12, draws the bottom fixedly connected with connecting block 8 of piece 9, and the bottom symmetry of connecting block 8 is rotated and is connected with two connecting rods 7.
The pull block 9 and the connecting block 8 are made of an integrally formed structure, the mechanical property of the integrally formed structure is better, and separation can be avoided.
Every connecting rod 7 keeps away from the one end of connecting block 8 and all is connected with the equalizer, and the equalizer includes slider 3, depression bar 4 and briquetting 6, specifically as follows:
slider 3 rotates with connecting rod 7 to be connected, and the bottom of slider 3 rotates and is connected with a plurality of depression bars 4, and the one end that slider 3 was kept away from to depression bar 4 rotates and is connected with briquetting 6.
Briquetting 6 adopts the rectangle structure, and the transmission pressure that the rectangle structure can be better.
One end fixedly connected with gag lever post 2 of connecting rod 7 is kept away from to slider 3, and inner wall fixedly connected with stopper 5 that the gag lever post 2 clearance passed mutual-inductor casing 1 has set up of gag lever post 2 and stopper 5 and has played spacing effect, avoids slider 3 arbitrary motion.
The lower end of the machine cavity 10 is provided with a slot 11, and a terminal is arranged in the slot 11.
Can put into slot 11 with a terminal during the use in, can overcome spring 12's elasticity by the manpower after that and push down briquetting 9, briquetting 9 drives connecting block 8 downstream, and connecting block 8 drives two connecting rods 7 and keeps away from the motion each other, and connecting rod 7 drives two sliders 3 and keeps away from the motion each other, and slider 3 presses briquetting 6 through connecting rod 4 to evenly press the terminal.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention. In the present invention, unless otherwise explicitly specified and limited, the terms "cover", "insert", "connect", "fix", "distribute" and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Claims (5)
1. A primary terminal voltage-sharing structure of a current transformer comprises a transformer shell (1), and is characterized in that a special-shaped machine cavity (10) is formed in the bottom end of the transformer shell (1), a pulling block (9) is arranged at the upper end of the machine cavity (10), springs (12) are arranged at the inner top ends of the pulling block (9) and the machine cavity (10), a connecting block (8) is fixedly connected to the bottom end of the pulling block (9), two connecting rods (7) are symmetrically and rotatably connected to the bottom end of the connecting block (8), and a voltage-sharing part is connected to one end, away from the connecting block (8), of each connecting rod (7);
the lower end of the machine cavity (10) is provided with a slot (11), and a terminal is arranged in the slot (11).
2. The primary terminal voltage-sharing structure of the current transformer according to claim 1, wherein the voltage-sharing member comprises a slider (3), a press rod (4) and a press block (6);
slider (3) rotate with connecting rod (7) and are connected, the bottom of slider (3) is rotated and is connected with a plurality of depression bars (4), the one end that slider (3) were kept away from in depression bar (4) is rotated and is connected with briquetting (6).
3. The primary terminal voltage-sharing structure of the current transformer according to claim 2, wherein the pressing block (6) is of a rectangular structure.
4. The primary terminal voltage-sharing structure of the current transformer according to claim 2, wherein a limiting rod (2) is fixedly connected to one end of the sliding block (3) far away from the connecting rod (7), and a limiting block (5) is fixedly connected to the limiting rod (2) and penetrates through the inner wall of the transformer shell (1) in a clearance mode.
5. The primary terminal voltage-sharing structure of the current transformer according to claim 1, wherein the pulling block (9) and the connecting block (8) are made of an integrally formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120861846.XU CN214672100U (en) | 2021-04-25 | 2021-04-25 | Primary terminal voltage-sharing structure of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120861846.XU CN214672100U (en) | 2021-04-25 | 2021-04-25 | Primary terminal voltage-sharing structure of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214672100U true CN214672100U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120861846.XU Active CN214672100U (en) | 2021-04-25 | 2021-04-25 | Primary terminal voltage-sharing structure of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214672100U (en) |
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2021
- 2021-04-25 CN CN202120861846.XU patent/CN214672100U/en active Active
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