Voltage Equalizing Device for Split-Type All-Fiber Current Transformer

Abstract

The present invention relates to the technical field of current transformers, and the present invention discloses a voltage equalizing device for a split-type all-fiber current transformer, including a current transformer. A insulator installation column mounting seat is fixedly connected to the top of the current transformer, and an insulator installation column is installed on the top of the insulator installation column mounting seat. A busbar limiting mechanism is arranged on the surface of the current transformer, and a voltage equalizing mechanism is arranged on the surface of the insulator installation column. The voltage equalizing mechanism includes an inner diameter adjustable clamping and stabilizing component and an external protection component for the voltage equalizing ring. When in use, the clamping ring is driven to move by the adjusting column, and the clamping ring and the devices on its surface are pressed against the surface of the insulator installation column for clamping. The setting of the buffer pressing pad, the telescopic block and the arc-shaped auxiliary pressing plate can ensure the clamping stability, prevent the mechanism from falling, and can change the clamping environment at any time according to the diameter of the insulator installation column, so as to adapt to a variety of different installation environments.

Description

Technical Field

[0001] The present invention relates to the technical field of current transformers, and particularly to a voltage equalizing device for a split-type all-fiber current transformer. Background Art

[0002] A current transformer is an instrument that measures a large current on the primary side by converting it into a small current on the secondary side based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has very few turns and is connected in series in the circuit where the current to be measured is located. In power generation, transformation, transmission, distribution, and power consumption circuits, the current magnitudes vary greatly, ranging from a few amperes to tens of thousands of amperes. For easy measurement, protection, and control, it is necessary to convert to a relatively unified current. Additionally, the voltage on the line is generally relatively high, and direct measurement is very dangerous. The current transformer plays the roles of current transformation and electrical isolation.

[0003] According to a split-type all-fiber current transformer voltage equalizing device disclosed on the patent network (publication number: CN115662756A), it is described that "The present invention relates to the field of all-fiber current transformers, and discloses a split-type all-fiber current transformer voltage equalizing device, including: a pipe bus; a voltage equalizing device fixed on the pipe bus, which is a split-type spherical drum shape; an all-optical current transformer suspended on the pipe bus and not in contact with the voltage equalizing device; wherein, the high-voltage end sensing ring at the upper part of the all-optical current transformer is sleeved on the pipe bus located inside the voltage equalizing device; the upper end of the fiber insulator at the lower part extends into the voltage equalizing device and is connected to the high-voltage end sensing ring. By changing the installation position of the voltage equalizing device, the voltage equalizing device is not in direct contact with the all-optical current transformer, fundamentally solving the technical problem that the voltage equalizing device is likely to cause damage or destruction to the fiber insulator."

[0004] Based on the above content, the applicant believes there are the following defects:

[0005] The split-type all-fiber current transformer voltage equalizing device aims to optimize the structure and installation position of the voltage equalizing device to reduce damage to the fiber insulator, while ensuring the accuracy and stability of current measurement. Currently, the fixing methods of the voltage equalizing rings are all fixed and non-adjustable, resulting in the use effect and installation method of the voltage equalizing rings not being able to reach the best. At the same time, the fixing method of the voltage equalizing ring is not stable enough and is not convenient to use. When facing objects with incompatible shape specifications, the voltage equalizing effect is often affected, which may lead to the generation of a large amount of stray capacitance, resulting in uneven voltage distribution, thus greatly reducing the working efficiency, and may also cause damage to the voltage equalizing ring.

[0006] Therefore, it is very necessary to design a split-type all-fiber current transformer voltage equalizing device with strong practicability and easy adjustment. Summary of the Invention

[0007] The purpose of the present invention is to provide a voltage equalizing device for a split-type all-fiber current transformer to solve the problems raised in the above-mentioned background technology.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: A voltage equalizing device for a split-type all-fiber current transformer, including a current transformer, a insulator mounting post mounting seat is fixedly connected to the top of the current transformer, an insulator mounting post is mounted on the top of the insulator mounting post mounting seat, a busbar limiting mechanism is arranged on the surface of the current transformer, and a voltage equalizing mechanism is arranged on the surface of the insulator mounting post. The voltage equalizing mechanism includes an inner diameter adjustable clamping and stabilizing component and an external protection component for the voltage equalizing ring. The inner diameter adjustable clamping and stabilizing component is arranged at the top of the surface of the insulator mounting post, and the external protection component for the voltage equalizing ring is arranged at the top and bottom of the inner diameter adjustable clamping and stabilizing component;

[0009] The inner diameter adjustable clamping and stabilizing component includes a clamping inner ring sleeved on the top of the surface of the insulator mounting post. Adjusting columns are arranged at the left and right ends of the clamping inner ring. A clamping ring is fixedly connected to the inner side of the adjusting column. A buffer pressing pad is fixedly connected to the inner side of the clamping ring. Telescopic blocks are fixedly connected to both ends of the inner side of the clamping ring. An arc-shaped auxiliary pressing plate is fixedly connected to the surface of the telescopic block. During use, the clamping ring is driven to move by the adjusting column, and the clamping ring and the devices on its surface are pressed against the surface of the insulator mounting post for clamping. The setting of the buffer pressing pad, the telescopic block and the arc-shaped auxiliary pressing plate can ensure the stability of clamping, prevent the mechanism from falling, and can change the clamping environment according to the diameter of the insulator mounting post at any time, so as to adapt to a variety of different installation environments.

[0010] According to the above technical solution, the clamping ring, the buffer pressing pad, the telescopic block and the arc-shaped auxiliary pressing plate are all arranged inside the clamping inner ring, and the adjusting column penetrates through the left and right ends of the surface of the clamping inner ring.

[0011] According to the above technical solution, the telescopic block and the arc-shaped auxiliary pressing plate are arranged at the front and rear ends of the inner side of the clamping ring. The arc-shaped auxiliary pressing plate is fixedly connected to the end of the telescopic block away from the clamping ring, and the buffer pressing pad is fixedly connected to the middle section of the inner side of the clamping ring.

[0012] According to the above technical solution, the external protection component of the grading ring includes an upper protection housing, the inner diameter adjustable clamping and stabilizing component includes a clamping inner ring, the upper protection housing is arranged at the top of the clamping inner ring, a lower protection housing is arranged at the bottom of the clamping inner ring, the outer ends of the surfaces of the upper protection housing and the lower protection housing are provided with first connection holes, a first pressing bolt is arranged inside the first connection holes, a main connecting rod is inserted into the first connection holes, one end of the main connecting rod away from the upper protection housing and the lower protection housing is inserted into a grading ring lower protection housing, a grading ring upper protection housing is arranged at one end of the grading ring lower protection housing away from the main connecting rod, the outer ends of the surfaces of the grading ring lower protection housing and the grading ring upper protection housing are provided with second connection holes, a second pressing bolt is arranged inside the second connection holes, and a grading ring is installed inside the grading ring lower protection housing and the grading ring upper protection housing. Through the setting of the external protection component of the grading ring, the inner diameter adjustable clamping and stabilizing component and the grading ring can be protected. When multiple groups of grading rings need to be installed, only multiple groups of external protection components of the grading ring need to be added for installation. By setting the grading ring into a multi-layer structure design, the ground stray capacitance can be more balanced, and the voltage can be more evenly distributed, thereby avoiding local breakdown and causing damage to the grading ring, and thus greatly extending the service life.

[0013] According to the above technical solution, the first connection holes are annularly distributed at the outer ends of the surfaces of the upper protection housing and the lower protection housing, and the upper protection housing and the lower protection housing are connected together by the first pressing bolts.

[0014] According to the above technical solution, the second connection holes are annularly distributed at the outer ends of the surfaces of the grading ring lower protection housing and the grading ring upper protection housing, and the grading ring lower protection housing and the grading ring upper protection housing are connected together by the second pressing bolts.

[0015] According to the above technical solution, the main connecting rods are annularly distributed at the top of the upper protection housing and the bottom of the lower protection housing, and the main connecting rods, the grading ring lower protection housing, the grading ring upper protection housing, the second connection holes, the second pressing bolts and the grading rings are all arranged at the top of the upper protection housing and the bottom of the lower protection housing.

[0016] According to the above technical solution, the busbar limiting mechanism includes a telescopic column. A cable port is provided on the surface of the current transformer. The telescopic column is fixedly connected to the inner surface of the cable port. A spring is sleeved on the surface of the telescopic column. One end of the telescopic column away from the cable port is fixedly connected with an insulating clamping plate. Connecting frames are fixedly connected to the left and right ends of the top of the current transformer. One end of the connecting frame away from the current transformer at the bottom is fixedly connected with a connecting plate. A stainless steel limiting ring is fixedly connected to the bottom of the connecting plate. By providing a busbar limiting mechanism to limit the busbar, the telescopic column, spring and insulating clamping plate inside the cable port are used to protect and fix the busbar. At the same time, it can adapt to the installation of busbars with a variety of different diameters. The setting of the stainless steel limiting ring can ensure the stable placement and installation of the busbar.

[0017] According to the above technical solution, a busbar penetrates through the cable port, and the busbar penetrates through the stainless steel limiting ring.

[0018] According to the above technical solution, a transformer mounting seat is fixedly connected to the bottom end of the current transformer, and insulators are mounted on the surface of the insulator mounting column.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0020] 1. In the present invention, by providing an inner diameter adjustable and clamping stable component, when in use, the clamping ring is driven to move by the adjusting column, and the clamping ring and the devices on its surface are abutted against the surface of the insulator mounting column for clamping. The setting of the buffer pressing pad, telescopic block and arc-shaped auxiliary pressing plate can ensure the stability of clamping. While preventing the mechanism from falling, the clamping environment can be changed at any time according to the diameter of the insulator mounting column, so as to adapt to a variety of different installation environments.

[0021] 2. In the present invention, by providing an external protection component for the grading ring, the external protection component for the grading ring can protect the inner diameter adjustable and clamping stable component and the grading ring. When multiple groups of grading rings need to be installed, only multiple groups of external protection components for the grading ring need to be added for installation. By setting the grading ring into a multi-layer structure design, the stray capacitance to the ground can be more balanced, and the voltage can be more evenly distributed, thereby avoiding local breakdown and causing damage to the grading ring, and thus greatly extending the service life.

[0022] 3. In the present invention, by providing a busbar limiting mechanism, the busbar is limited by the busbar limiting mechanism. The telescopic column, spring and insulating clamping plate inside the cable port are used to protect and fix the busbar. At the same time, it can adapt to the installation of busbars with a variety of different diameters. The setting of the stainless steel limiting ring can ensure the stable placement and installation of the busbar. Description of the Drawings

[0023] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the accompanying drawings:

[0024] Figure 1 is the overall schematic diagram of the present invention;

[0025] Figure 2 is the schematic diagram of the voltage equalizing mechanism of the present invention;

[0026] Figure 3 is the schematic diagram of the inner diameter adjustable clamping and stabilizing assembly of the present invention;

[0027] Figure 4 is the schematic diagram of the clamping inner ring of the present invention;

[0028] Figure 5 is the schematic diagram of the external protection assembly of the voltage equalizing ring of the present invention;

[0029] Figure 6 is the schematic diagram of the voltage equalizing ring of the present invention;

[0030] Figure 7 is the schematic diagram of the separated view of the voltage equalizing mechanism of the present invention;

[0031] Figure 8 is the schematic diagram of the pipe bus of the present invention;

[0032] Figure 9 is the schematic diagram of the current transformer of the present invention.

[0033] In the figure: 1. Current transformer; 2. Transformer mounting base; 3. Cable port; 4. Insulator mounting post mounting base; 5. Insulator mounting post; 6. Insulator; 7. Pipe bus limiting mechanism; 71. Telescopic column; 72. Spring; 73. Insulating clamping plate; 74. Connecting frame; 75. Connecting plate; 76. Stainless steel limiting ring; 8. Voltage equalizing mechanism; 81. Inner diameter adjustable clamping and stabilizing assembly; 811. Clamping inner ring; 812. Adjusting column; 813. Clamping ring; 814. Buffer pressing pad; 815. Telescopic block; 816. Arc-shaped auxiliary pressing plate; 82. External protection assembly of voltage equalizing ring; 821. Upper protection housing; 822. Lower protection housing; 823. First connection hole; 824. First pressing bolt; 825. Main connecting rod; 826. Lower protection housing of voltage equalizing ring; 827. Upper protection housing of voltage equalizing ring; 828. Second connection hole; 829. Second pressing bolt; 8201. Voltage equalizing ring; 9. Pipe bus. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The present invention provides the following technical solutions:

[0036] Embodiment 1

[0037] Please refer to Figures 1-9 , the present invention provides a technical solution: a voltage equalizing device for a split-type all-fiber current transformer, including a current transformer 1, an insulator mounting column mounting seat 4 is fixedly connected to the top of the current transformer 1, an insulator mounting column 5 is mounted on the top of the insulator mounting column mounting seat 4, a busbar limiting mechanism 7 is arranged on the surface of the current transformer 1, a voltage equalizing mechanism 8 is arranged on the surface of the insulator mounting column 5, the voltage equalizing mechanism 8 includes an inner diameter adjustable clamping and stabilizing component 81 and an external protection component 82 for the voltage equalizing ring, the inner diameter adjustable clamping and stabilizing component 81 is arranged on the top surface of the insulator mounting column 5, and the external protection component 82 for the voltage equalizing ring is arranged on the top and bottom of the inner diameter adjustable clamping and stabilizing component 81;

[0038] The inner diameter adjustable clamping and stabilizing component 81 includes a clamping inner ring 811, the clamping inner ring 811 is sleeved on the top surface of the insulator mounting column 5, adjusting columns 812 are arranged at the left and right ends of the clamping inner ring 811, a clamping ring 813 is fixedly connected to the inner side of the adjusting column 812, a buffer pressing pad 814 is fixedly connected to the inner side of the clamping ring 813, telescopic blocks 815 are fixedly connected to both ends of the inner side of the clamping ring 813, an arc-shaped auxiliary pressing plate 816 is fixedly connected to the surface of the telescopic block 815. When in use, the clamping ring 813 is driven to move through the adjusting column 812, and the clamping ring 813 and the devices on its surface are pressed against the surface of the insulator mounting column 5 for clamping. Through the settings of the buffer pressing pad 814, the telescopic block 815 and the arc-shaped auxiliary pressing plate 816, the clamping stability can be ensured, and while preventing the mechanism from falling, the clamping environment can be changed at any time according to the diameter of the insulator mounting column 5, so as to adapt to a variety of different installation environments;

[0039] The clamping ring 813, the buffer pressing pad 814, the telescopic block 815 and the arc-shaped auxiliary pressing plate 816 are all arranged inside the clamping inner ring 811, and the adjusting column 812 penetrates through the left and right end surfaces of the clamping inner ring 811;

[0040] The telescopic block 815 and the arc-shaped auxiliary pressing plate 816 are arranged at the front and rear ends inside the clamping ring 813, the arc-shaped auxiliary pressing plate 816 is fixedly connected to the end of the telescopic block 815 away from the clamping ring 813, and the buffer pressing pad 814 is fixedly connected to the middle section inside the clamping ring 813;

[0041] The external protection component 82 of the grading ring includes an upper protection housing 821, and the inner diameter adjustable clamping and stabilizing component 81 includes a clamping inner ring 811. The upper protection housing 821 is arranged on the top of the clamping inner ring 811. A lower protection housing 822 is arranged at the bottom of the clamping inner ring 811. The outer ends of the surfaces of the upper protection housing 821 and the lower protection housing 822 are provided with first connection holes 823. Inside the first connection holes 823, there are first pressing bolts 824. A main connecting rod 825 is inserted into the first connection holes 823. One end of the main connecting rod 825 away from the upper protection housing 821 and the lower protection housing 822 is inserted into a lower protection housing 826 of the grading ring. One end of the lower protection housing 826 of the grading ring away from the main connecting rod 825 is provided with an upper protection housing 827 of the grading ring. The outer ends of the surfaces of the lower protection housing 826 of the grading ring and the upper protection housing 827 of the grading ring are provided with second connection holes 828. Inside the second connection holes 828, there are second pressing bolts 829. A grading ring 8201 is installed inside the lower protection housing 826 of the grading ring and the upper protection housing 827 of the grading ring. Through the setting of the external protection component 82 of the grading ring, the inner diameter adjustable clamping and stabilizing component 81 and the grading ring 8201 can be protected. When multiple sets of grading rings 8201 need to be installed, only multiple sets of external protection components 82 of the grading ring need to be added for installation. By setting the grading ring 8201 into a multi-layer structure design, the ground stray capacitance can be more balanced, and the voltage can be more evenly distributed, thus avoiding damage to the grading ring 8201 caused by local breakdown, and greatly extending the service life;

[0042] The first connection holes 823 are annularly distributed on the outer ends of the surfaces of the upper protection housing 821 and the lower protection housing 822. The upper protection housing 821 and the lower protection housing 822 are connected together by the first pressing bolts 824;

[0043] The second connection holes 828 are annularly distributed on the outer ends of the surfaces of the lower protection housing 826 of the grading ring and the upper protection housing 827 of the grading ring. The lower protection housing 826 of the grading ring and the upper protection housing 827 of the grading ring are connected together by the second pressing bolts 829;

[0044] The main connecting rods 825 are annularly distributed on the top of the upper protection housing 821 and the bottom of the lower protection housing 822. The top of the upper protection housing 821 and the bottom of the lower protection housing 822 are both provided with main connecting rods 825, a lower protection housing 826 of the grading ring, an upper protection housing 827 of the grading ring, second connection holes 828, second pressing bolts 829 and a grading ring 8201.

[0045] Embodiment 2

[0046] Please refer to Figures 1-9, and on the basis of the first embodiment, it is further obtained that the busbar limiting mechanism 7 includes a telescopic column 71. A cable port 3 is opened on the surface of the current transformer 1. The telescopic column 71 is fixedly connected to the inner surface of the cable port 3. A spring 72 is sleeved on the surface of the telescopic column 71. One end of the telescopic column 71 away from the cable port 3 is fixedly connected with an insulating clamping plate 73. Both the left and right ends of the top of the current transformer 1 are fixedly connected with connecting frames 74. One end of the connecting frame 74 away from the current transformer 1 at the bottom is fixedly connected with a connecting plate 75. A stainless steel limiting ring 76 is fixedly connected to the bottom of the connecting plate 75. By providing the busbar limiting mechanism 7 to limit the busbar 9, the telescopic column 71, the spring 72 and the insulating clamping plate 73 inside the cable port 3 protect and fix the busbar 9, and at the same time, it can adapt to the installation of busbars 9 with various different diameters. The setting of the stainless steel limiting ring 76 can ensure the stable placement and installation of the busbar 9;

[0047] The busbar 9 penetrates through the cable port 3 inside, and the busbar 9 penetrates through the stainless steel limiting ring 76;

[0048] The bottom end of the current transformer 1 is fixedly connected with a transformer mounting seat 2, and insulators 6 are installed on the surface of the insulator mounting column 5.

[0049] During the actual operation process, when this device is used, the current transformer 1 is installed through the transformer mounting seat 2, and then the insulator mounting column 5 and the insulators 6 are installed. The busbar 9 is passed through the cable port 3 on the surface of the current transformer 1. By providing the busbar limiting mechanism 7 to limit the busbar 9, the telescopic column 71, the spring 72 and the insulating clamping plate 73 inside the cable port 3 protect and fix the busbar 9, and at the same time, it can adapt to the installation of busbars 9 with various different diameters. The setting of the stainless steel limiting ring 76 can ensure the stable placement and installation of the busbar 9. Then, the grading mechanism 8 is installed on the surface of the insulator mounting column 5. During use, the clamping ring 813 is driven to move by the adjusting column 812, and the clamping ring 813 and the devices on its surface are abutted against the surface of the insulator mounting column 5 for clamping. The setting of the buffer pressing pad 814, the telescopic block 815 and the arc-shaped auxiliary pressing plate 816 can ensure the clamping stability. While preventing the mechanism from falling, the clamping environment can be changed at any time according to the diameter of the insulator mounting column 5 to adapt to various different installation environments. The setting of the grading ring external protection component 82 can protect the inner diameter adjustable clamping and stable component 81 and the grading ring 8201. When multiple grading rings 8201 need to be installed, only multiple grading ring external protection components 82 need to be added for installation. By setting the grading ring 8201 into a multi-layer structure design, the ground stray capacitance can be more balanced, and the voltage can be more evenly distributed, thus avoiding the damage of the grading ring 8201 caused by local breakdown, and greatly prolonging the service life.

[0050] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0051] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Split-type all-fiber current transformer voltage equalizing device, comprising a current transformer (1), characterized in that: The top of the current transformer (1) is fixedly connected with an insulator mounting column mounting seat (4). The top of the insulator mounting column mounting seat (4) is provided with an insulator mounting column (5). A busbar limiting mechanism (7) is arranged on the surface of the current transformer (1). A voltage equalizing mechanism (8) is arranged on the surface of the insulator mounting column (5). The voltage equalizing mechanism (8) includes an inner diameter adjustable clamping and stabilizing component (81) and an external protection component (82) for the voltage equalizing ring. The inner diameter adjustable clamping and stabilizing component (81) is arranged at the top of the surface of the insulator mounting column (5), and the external protection component (82) for the voltage equalizing ring is arranged at the top and bottom of the inner diameter adjustable clamping and stabilizing component (81). The inner diameter adjustable clamping and stabilizing component (81) includes a clamping inner ring (811). The clamping inner ring (811) is sleeved on the top of the surface of the insulator mounting column (5). Adjusting columns (812) are arranged at the left and right ends of the clamping inner ring (811). A clamping ring (813) is fixedly connected to the inner side of the adjusting column (812). A buffer pressing pad (814) is fixedly connected to the inner side of the clamping ring (813). Telescopic blocks (815) are fixedly connected to both ends of the inner side of the clamping ring (813). An arc-shaped auxiliary pressing plate (816) is fixedly connected to the surface of the telescopic block (815). The external protection component (82) for the voltage equalizing ring includes an upper protection shell (821). The upper protection shell (821) is arranged on the top of the clamping inner ring (811). A lower protection shell (822) is arranged at the bottom of the clamping inner ring (811). First connection holes (823) are formed in the outer ends of the surfaces of the upper protection shell (821) and the lower protection shell (822). A first pressing bolt (824) is arranged inside the first connection hole (823). A main connecting rod (825) is inserted into the first connection hole (823). One end of the main connecting rod (825) away from the upper protection shell (821) and the lower protection shell (822) is inserted into a lower protection shell (826) for the voltage equalizing ring. A upper protection shell (827) for the voltage equalizing ring is arranged at the end of the lower protection shell (826) for the voltage equalizing ring away from the main connecting rod (825). Second connection holes (828) are formed in the outer ends of the surfaces of the lower protection shell (826) for the voltage equalizing ring and the upper protection shell (827) for the voltage equalizing ring. A second pressing bolt (829) is arranged inside the second connection hole (828). A voltage equalizing ring (8201) is installed inside the lower protection shell (826) for the voltage equalizing ring and the upper protection shell (827) for the voltage equalizing ring.

2. The voltage equalizing device for the split-type all-fiber current transformer according to claim 1, characterized in that: The clamping ring (813), the buffer pressing pad (814), the telescopic block (815) and the arc-shaped auxiliary pressing plate (816) are all arranged inside the clamping inner ring (811). The adjusting column (812) penetrates through the left and right end surfaces of the clamping inner ring (811).

3. The voltage equalizing device for the split-type all-fiber current transformer according to claim 2, characterized in that: The telescopic block (815) and the arc-shaped auxiliary pressing plate (816) are arranged at the front and rear ends inside the clamping ring (813). The arc-shaped auxiliary pressing plate (816) is fixedly connected to one end of the telescopic block (815) away from the clamping ring (813), and the buffer pressing pad (814) is fixedly connected to the middle section inside the clamping ring (813).

4. The voltage equalizing device for the split-type all-fiber current transformer according to claim 3, wherein: The first connection holes (823) are annularly distributed at the outer ends of the surfaces of the upper protective housing (821) and the lower protective housing (822). The upper protective housing (821) and the lower protective housing (822) are connected together by the first pressing bolts (824).

5. The voltage equalizing device for the split-type all-fiber current transformer according to claim 4, wherein: The second connection holes (828) are annularly distributed at the outer ends of the surfaces of the lower protective housing (826) of the voltage equalizing ring and the upper protective housing (827) of the voltage equalizing ring. The lower protective housing (826) of the voltage equalizing ring and the upper protective housing (827) of the voltage equalizing ring are connected together by the second pressing bolts (829).

6. The voltage equalizing device for the split-type all-fiber current transformer according to claim 5, characterized in that: The main connecting rods (825) are annularly distributed at the top of the upper protective housing (821) and the bottom of the lower protective housing (822). The main connecting rods (825), the lower protective housing (826) of the voltage equalizing ring, the upper protective housing (827) of the voltage equalizing ring, the second connection holes (828), the second pressing bolts (829) and the voltage equalizing ring (8201) are all arranged at the top of the upper protective housing (821) and the bottom of the lower protective housing (822).

7. The voltage equalizing device for the split-type all-fiber current transformer according to claim 6, wherein: The busbar limiting mechanism (7) includes a telescopic column (71). A cable port (3) is formed on the surface of the current transformer (1). The telescopic column (71) is fixedly connected to the inner surface of the cable port (3). A spring (72) is sleeved on the surface of the telescopic column (71). One end of the telescopic column (71) away from the cable port (3) is fixedly connected to an insulating clamping plate (73). Connecting frames (74) are fixedly connected to the left and right ends at the top of the current transformer (1). One end of the bottom of the connecting frame (74) away from the current transformer (1) is fixedly connected to a connecting plate (75). A stainless steel limiting ring (76) is fixedly connected to the bottom of the connecting plate (75).

8. The voltage equalizing device for the split-type all-fiber current transformer according to claim 7, characterized in that: A busbar (9) passes through the inside of the cable port (3), and the busbar (9) passes through the stainless steel limiting ring (76).

9. The voltage equalizing device for the split-type all-fiber current transformer according to claim 8, characterized in that: The bottom end of the current transformer (1) is fixedly connected to a transformer mounting seat (2), and insulators (6) are mounted on the surface of the insulator mounting columns (5).

Images