Split type all-fiber current transformer voltage-sharing device

Abstract

The invention relates to the technical field of current transformers, and discloses a split all-fiber current transformer voltage-sharing device, which comprises a current transformer, the top of the current transformer is fixedly connected with an insulator mounting column mounting seat, and the top of the insulator mounting column mounting seat is provided with an insulator mounting column. A tubular bus limiting mechanism is arranged on the surface of the current transformer, a voltage equalizing mechanism is arranged on the surface of the insulator mounting column, and the voltage equalizing mechanism comprises an inner diameter adjustable clamping stabilizing assembly and a voltage equalizing ring external protection assembly. A clamping ring and a device on the surface of the clamping ring abut against the surface of an insulator mounting column for clamping, the clamping stability can be guaranteed through the arrangement of a buffering pressing pad, a telescopic block and an arc-shaped auxiliary pressing plate, and the clamping environment can be changed at any time according to the diameter of the insulator mounting column while the mechanism is prevented from falling off; therefore, the device is suitable for various different installation environments.

Description

Technical Field

[0001] The invention relates to the technical field of current transformers, and in particular to a split all-optical fiber current transformer voltage balancing device. Background Art

[0002] A current transformer is an instrument that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. Its primary winding has very few turns and is connected in series in the circuit of the current that needs to be measured. The currents in power generation, substation, transmission, distribution and power consumption lines vary greatly, ranging from a few amperes to tens of thousands of amperes. In order to facilitate measurement, protection and control, they need to be converted into a relatively uniform current. In addition, the voltage on the line is generally high. Direct measurement is very dangerous. The current transformer plays the role of current conversion and electrical isolation.

[0003] According to a split all-optical current transformer voltage balancing device disclosed on the patent website (authorization announcement number: CN115662756A), "The present invention relates to the field of all-optical current transformers, and discloses a split all-optical current transformer voltage balancing device, including: a tube mother; a voltage balancing device, fixed on the tube mother, in a split spherical drum shape; an all-optical current transformer, suspended on the tube mother, and not in contact with the voltage balancing device; wherein the high-voltage end sensing ring of the upper part of the all-optical current transformer is sleeved on the tube mother located in the voltage balancing device; the upper end of the lower optical fiber insulator extends into the voltage balancing device and is connected to the high-voltage end sensing ring. By changing the installation position of the voltage balancing device, the voltage balancing device is not in direct contact with the all-optical current transformer, which fundamentally solves the technical problem that the voltage balancing device is prone to damage or destruction of the optical fiber insulator." Based on the above, the applicant believes that there are the following defects: The split all-fiber current transformer voltage-equalizing device is designed to reduce damage to fiber optic insulators by optimizing the structure and installation position of the voltage-equalizing device, while ensuring the accuracy and stability of current measurement. Today's voltage-equalizing rings are fixed and cannot be adjusted, resulting in suboptimal use and installation of the voltage-equalizing rings. At the same time, the fixing method of the voltage-equalizing rings is not stable enough and inconvenient to use. When facing objects with incompatible shapes and specifications, the voltage-equalizing effect is often affected, which may lead to a large amount of stray capacitance and uneven voltage distribution, thereby greatly reducing work efficiency and possibly causing damage to the voltage-equalizing rings.

[0004] Therefore, it is necessary to design a split all-optical current transformer voltage balancing device that is highly practical and easy to adjust. Summary of the invention

[0005] The object of the present invention is to provide a split all-optical fiber current transformer voltage balancing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a split all-optical current transformer voltage grading device, comprising a current transformer, an insulator mounting post mounting seat is fixedly connected to the top of the current transformer, an insulator mounting post is installed on the top of the insulator mounting post mounting seat, a tube mother limiting mechanism is arranged on the surface of the current transformer, and a voltage grading mechanism is arranged on the surface of the insulator mounting post, the voltage grading mechanism comprises an inner diameter adjustable clamping stabilization component and a voltage grading ring external protection component, the inner diameter adjustable clamping stabilization component is arranged on the top of the insulator mounting post surface, and the voltage grading ring external protection component is arranged on the top and bottom of the inner diameter adjustable clamping stabilization component; The inner diameter adjustable clamping stabilization component includes a clamping inner ring, which is sleeved on the top of the insulator mounting column surface, and adjusting columns are arranged on the left and right ends of the clamping inner ring. A clamping ring is fixedly connected to the inner side of the adjusting column, and a buffer pressure pad is fixedly connected to the inner side of the clamping ring. Telescopic blocks are fixedly connected to the inner sides of the clamping ring, and an arc-shaped auxiliary pressure plate is fixedly connected to the surface of the telescopic block. When in use, the clamping ring is driven to move by the adjusting column, and the clamping ring and the device on its surface are clamped against the surface of the insulator mounting column for clamping. The arrangement of the buffer pressure pad, the telescopic block and the arc-shaped auxiliary pressure plate can ensure the stability of the clamping, prevent the mechanism from falling, and at the same time, the clamping environment can be changed at any time according to the diameter of the insulator mounting column to adapt to a variety of different installation environments.

[0007] According to the above technical solution, the clamping ring, buffer pressure pad, telescopic block and arc-shaped auxiliary pressure plate are all arranged on the inner side of the clamping inner ring, and the adjustment column runs through the left and right end surfaces of the clamping inner ring.

[0008] According to the above technical solution, the telescopic block and the arc-shaped auxiliary pressure plate are arranged at the front and rear ends of the inner side of the clamping ring, the arc-shaped auxiliary pressure plate is fixedly connected to the end of the telescopic block away from the clamping ring, and the buffer pressure pad is fixedly connected to the middle section of the inner side of the clamping ring.

[0009] According to the above technical solution, the external protection component of the equalizing ring includes an upper protection shell, the inner diameter adjustable clamping stabilization component includes a clamping inner ring, the upper protection shell is arranged at the top of the clamping inner ring, and the bottom of the clamping inner ring is provided with a lower protection shell, the outer ends of the upper and lower protection shells are provided with a first connecting hole, a first clamping bolt is provided inside the first connecting hole, a main connecting rod is inserted into the first connecting hole, the end of the main connecting rod away from the upper and lower protection shells is inserted with the lower protection shell of the equalizing ring, the end of the lower protection shell of the equalizing ring away from the main connecting rod is provided with the upper protection shell of the equalizing ring, and the equalizing ring A second connecting hole is opened on the outer ends of the surfaces of the lower protective shell and the upper protective shell of the equalizing ring, and a second clamping bolt is arranged inside the second connecting hole. The equalizing ring is installed inside the lower protective shell of the equalizing ring and the upper protective shell of the equalizing ring. The inner diameter adjustable clamping stabilization component and the equalizing ring can be protected by setting the external protection component of the equalizing ring. When multiple groups of equalizing rings need to be installed, it is only necessary to add multiple groups of external protection components of the equalizing ring for installation. By setting the equalizing ring to 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 damage to the equalizing ring, thereby greatly extending the service life.

[0010] According to the above technical solution, the first connection holes are distributed in a ring shape at the outer ends of the upper protective shell and the lower protective shell, and the upper protective shell and the lower protective shell are connected together by a first clamping bolt.

[0011] According to the above technical solution, the second connecting holes are distributed in a ring shape on the outer ends of the surfaces of the lower protective shell of the pressure equalizing ring and the upper protective shell of the pressure equalizing ring, and the lower protective shell of the pressure equalizing ring and the upper protective shell of the pressure equalizing ring are connected together by second clamping bolts.

[0012] According to the above technical solution, the main connecting rod is distributed in a ring shape at the top of the upper protective shell and the bottom of the lower protective shell, and the top of the upper protective shell and the bottom of the lower protective shell are both provided with the main connecting rod, the lower protective shell of the pressure equalizing ring, the upper protective shell of the pressure equalizing ring, the second connecting hole, the second clamping bolt and the pressure equalizing ring.

[0013] According to the above technical solution, the tube mother limiting mechanism includes a telescopic column, a cable port is opened 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, an end of the telescopic column away from the cable port is fixedly connected to an insulating clamping plate, the left and right ends of the top of the current transformer are fixedly connected to a connecting frame, the end of the bottom of the connecting frame away from the current transformer is fixedly connected to a connecting plate, and a stainless steel limiting ring is fixedly connected to the bottom of the connecting plate. The tube mother is limited by providing a tube mother limiting mechanism, and the tube mother is protected and fixed by the telescopic column, spring and insulating clamping plate inside the cable port. At the same time, it can adapt to the installation of tube mothers of various diameters, and the setting of the stainless steel limiting ring can ensure the stable placement and installation of the tube mother.

[0014] According to the above technical solution, a tube nut is passed through the cable opening, and the tube nut passes through a stainless steel limiting ring.

[0015] According to the above technical solution, the bottom end of the current transformer is fixedly connected to a transformer mounting seat, and an insulator is installed on the surface of the insulator mounting column.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention is provided with a clamping stabilization component with an adjustable inner diameter. When in use, the clamping ring is driven to move by the adjusting column, and the clamping ring and the device on its surface are clamped against the surface of the insulator mounting column. The buffer pressure pad, the telescopic block and the arc-shaped auxiliary pressure plate are provided to ensure the stability of the clamping, prevent the mechanism from falling, and change the clamping environment at any time according to the diameter of the insulator mounting column, so as to adapt to a variety of different installation environments.

[0017] 2. The present invention is provided with an external protection component for the equalizing ring. The inner diameter adjustable clamping stabilization component and the equalizing ring can be protected by the setting of the external protection component for the equalizing ring. When multiple groups of equalizing rings need to be installed, it is only necessary to add multiple groups of external protection components for the equalizing rings for installation. By arranging the equalizing 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 equalizing ring, thereby greatly extending the service life.

[0018] 3. The present invention is provided with a tube mother limiting mechanism to limit the tube mother, and the tube mother is protected and fixed by the telescopic column, spring and insulating clamp inside the cable port. At the same time, it can adapt to the installation of tube mothers of various diameters, and the setting of the stainless steel limiting ring can ensure the stable placement and installation of the tube mother. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute 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 of the present invention. In the accompanying drawings: Figure 1 It is an overall schematic diagram of the present invention; Figure 2 is a schematic diagram of the pressure equalizing mechanism of the present invention; Figure 3 is a schematic diagram of the inner diameter adjustable clamping stabilizing assembly of the present invention; Figure 4 is a schematic diagram of the clamping inner ring of the present invention; Figure 5 is a schematic diagram of an external protection assembly of a pressure equalizing ring of the present invention; Figure 6 is a schematic diagram of a pressure equalizing ring of the present invention; Figure 7 It is a schematic diagram of a separated view of the pressure equalizing mechanism of the present invention; Figure 8 It is a schematic diagram of a tube mother of the present invention; Fig. 9 It is a schematic diagram of a current transformer of the present invention.

[0020] In the figure: 1, current transformer; 2, transformer mounting seat; 3, cable port; 4, insulator mounting post mounting seat; 5, insulator mounting post; 6, insulator; 7, tube mother limiting mechanism; 71, telescopic column; 72, spring; 73, insulating clamp; 74, connecting frame; 75, connecting plate; 76, stainless steel limit ring; 8, equalizing pressure mechanism; 81, inner diameter adjustable clamping stabilizing component; 811, clamping inner ring; 812, adjusting column; 813, clamping ring; 814, buffer pressure pad; 815, telescopic block; 816, arc-shaped auxiliary pressure plate; 82, external protection assembly of equalizing ring; 821, upper protection shell; 822, lower protection shell; 823, first connecting hole; 824, first clamping bolt; 825, main connecting rod; 826, lower protection shell of equalizing ring; 827, upper protection shell of equalizing ring; 828, second connecting hole; 829, second clamping bolt; 8201, equalizing ring; 9, pipe nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention provides the following technical solutions: Embodiment 1 See also Figure 1-9 The present invention provides a technical solution: a split all-optical current transformer voltage grading device, comprising 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 installed on the top of the insulator mounting column mounting seat 4, a tube mother limiting mechanism 7 is arranged on the surface of the current transformer 1, and a voltage grading mechanism 8 is arranged on the surface of the insulator mounting column 5. The voltage grading mechanism 8 includes an inner diameter adjustable clamping stabilizing component 81 and a voltage grading ring external protection component 82, the inner diameter adjustable clamping stabilizing component 81 is arranged on the top of the surface of the insulator mounting column 5, and the voltage grading ring external protection component 82 is arranged on the top and bottom of the inner diameter adjustable clamping stabilizing component 81; The inner diameter adjustable clamping stabilizing component 81 comprises a clamping inner ring 811, which is sleeved on the top of the surface of the insulator mounting column 5, and adjustment columns 812 are arranged at the left and right ends of the clamping inner ring 811, and a clamping ring 813 is fixedly connected to the inner side of the adjustment column 812, and a buffer pressing pad 814 is fixedly connected to the inner side of the clamping ring 813, and telescopic blocks 815 are fixedly connected to the inner ends of the clamping ring 813, and 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 by the adjusting column 812, and the clamping ring 813 and the device on its surface are pressed against the surface of the insulator mounting column 5 for clamping. The arrangement of the buffer pressing pad 814, the telescopic block 815 and the arc-shaped auxiliary pressing plate 816 can ensure the stability of the clamping, prevent the mechanism from falling, and at the same time, 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; The clamping ring 813, the buffer pressing pad 814, the telescopic block 815 and the arc-shaped auxiliary pressure plate 816 are all arranged on the inner side of the clamping inner ring 811, and the adjustment column 812 runs through the left and right end surfaces of the clamping inner ring 811; The telescopic block 815 and the arc-shaped auxiliary pressure plate 816 are arranged at the front and rear ends of the inner side of the clamping ring 813, the arc-shaped auxiliary pressure plate 816 is fixedly connected to the end of the telescopic block 815 away from the clamping ring 813, and the buffer pressure pad 814 is fixedly connected to the inner middle section of the clamping ring 813; The pressure-equalizing ring external protection component 82 includes an upper protection shell 821, and the inner diameter adjustable clamping stabilizing component 81 includes a clamping inner ring 811. The upper protection shell 821 is arranged on the top of the clamping inner ring 811, and a lower protection shell 822 is arranged at the bottom of the clamping inner ring 811. The outer ends of the upper protection shell 821 and the lower protection shell 822 are provided with a first connecting hole 823, and a first clamping bolt 824 is arranged inside the first connecting hole 823. A main connecting rod 825 is inserted into the first connecting hole 823, and an equalizing ring lower protection shell 826 is inserted into the end of the main connecting rod 825 away from the upper protection shell 821 and the lower protection shell 822. The equalizing ring lower protection shell 826 is provided with an upper protection shell 827 at one end away from the main connecting rod 825. A second connecting hole 828 is provided at the outer end of the surface of the shell 826 and the upper protective shell 827 of the equalizing ring, and a second clamping bolt 829 is arranged inside the second connecting hole 828. An equalizing ring 8201 is installed inside the lower protective shell 826 of the equalizing ring and the upper protective shell 827 of the equalizing ring. The inner diameter adjustable clamping stabilizing component 81 and the equalizing ring 8201 can be protected by setting the equalizing ring external protection component 82. When multiple groups of equalizing rings 8201 need to be installed, it is only necessary to add multiple groups of equalizing ring external protection components 82 for installation. By setting the equalizing ring 8201 to 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 equalizing ring 8201, thereby greatly extending the service life; The first connection holes 823 are distributed in an annular shape at the outer ends of the upper protective shell 821 and the lower protective shell 822. The upper protective shell 821 and the lower protective shell 822 are connected together by the first clamping bolts 824. The second connection holes 828 are distributed in an annular shape on the outer ends of the surface of the lower protective shell 826 of the pressure equalizing ring and the upper protective shell 827 of the pressure equalizing ring. The lower protective shell 826 of the pressure equalizing ring and the upper protective shell 827 of the pressure equalizing ring are connected together by the second clamping bolts 829; The main connecting rod 825 is distributed in a ring shape at the top of the upper protective shell 821 and the bottom of the lower protective shell 822. The top of the upper protective shell 821 and the bottom of the lower protective shell 822 are both provided with the main connecting rod 825, the lower protective shell 826 of the equalizing ring, the upper protective shell 827 of the equalizing ring, the second connecting hole 828, the second clamping bolt 829 and the equalizing ring 8201.

[0023] Embodiment 2 See also Figure 1-9, and on the basis of the first embodiment, the tube mother limiting mechanism 7 further comprises 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, and an end of the telescopic column 71 away from the cable port 3 is fixedly connected to an insulating clamping plate 73, and both left and right ends of the top of the current transformer 1 are fixedly connected to a connecting frame 74, and an end of the bottom of the connecting frame 74 away from the current transformer 1 is fixedly connected to a connecting plate 75, and a stainless steel limiting ring 76 is fixedly connected to the bottom of the connecting plate 75. The tube mother 9 is limited by the provision of the tube mother limiting mechanism 7, and the tube mother 9 is protected and fixed by the telescopic column 71, the spring 72 and the insulating clamping plate 73 inside the cable port 3. At the same time, it can adapt to the installation of tube mothers 9 of various diameters, and the provision of the stainless steel limiting ring 76 can ensure the stable placement and installation of the tube mother 9; A tube nut 9 is passed through the cable port 3, and the tube nut 9 passes through the stainless steel limiting ring 76; The bottom end of the current transformer 1 is fixedly connected with a transformer mounting seat 2, and an insulator 6 is mounted on the surface of the insulator mounting column 5.

[0024] In actual operation, when the device is used, the current transformer 1 is installed through the transformer mounting seat 2, and then the insulator mounting column 5 and the insulator 6 are installed. The tube mother 9 is passed through the cable port 3 on the surface of the current transformer 1, and the tube mother 9 is limited by the tube mother limiting mechanism 7. The tube mother 9 is protected and fixed by the telescopic column 71, the spring 72 and the insulating clamping plate 73 inside the cable port 3. At the same time, it can adapt to the installation of tube mothers 9 of various diameters. The setting of the stainless steel limiting ring 76 can ensure the stable placement and installation of the tube mother 9. Then the voltage equalizing mechanism 8 is installed on the surface of the insulator mounting column 5. When in 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 pressed against the surface of the insulator mounting column 5. Clamping, through the setting of the buffer pressure pad 814, the telescopic block 815 and the arc-shaped auxiliary pressure plate 816, the stability of the clamping can be ensured, and the mechanism can be prevented from falling. At the same time, 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. The setting of the equalizing ring external protection component 82 can protect the inner diameter adjustable clamping stabilization component 81 and the equalizing ring 8201. When multiple groups of equalizing rings 8201 need to be installed, it is only necessary to add multiple groups of equalizing ring external protection components 82 for installation. By setting the equalizing ring 8201 to 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 equalizing ring 8201, thereby greatly extending the service life.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A split all-optical current transformer voltage balancing device, comprising a current transformer (1), characterized in that: The top of the current transformer (1) is fixedly connected to an insulator mounting column mounting seat (4), an insulator mounting column (5) is mounted on the top of the insulator mounting column mounting seat (4), a tube mother limiting mechanism (7) is arranged on the surface of the current transformer (1), and a voltage equalizing mechanism (8) is arranged on the surface of the insulator mounting column (5), the voltage equalizing mechanism (8) comprises an inner diameter adjustable clamping stabilizing component (81) and a voltage equalizing ring external protection component (82), the inner diameter adjustable clamping stabilizing component (81) is arranged on the top of the surface of the insulator mounting column (5), and the voltage equalizing ring external protection component (82) is arranged on the top and bottom of the inner diameter adjustable clamping stabilizing component (81); The inner diameter adjustable clamping stabilizing assembly (81) comprises a clamping inner ring (811), the clamping inner ring (811) is sleeved on the top of the surface of the insulator mounting column (5), the left and right ends of the clamping inner ring (811) are provided with adjustment columns (812), the inner side of the adjustment column (812) is fixedly connected to a clamping ring (813), the inner side of the clamping ring (813) is fixedly connected to a buffer pressure pad (814), the inner sides of the clamping ring (813) are fixedly connected to telescopic blocks (815), and the surface of the telescopic block (815) is fixedly connected to an arc-shaped auxiliary pressure plate (816).

2. The split all-optical current transformer voltage balancing device 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 pressure plate (816) are all arranged on the inner side of the clamping inner ring (811), and the adjustment column (812) passes through the left and right end surfaces of the clamping inner ring (811).

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

4. The split all-optical current transformer voltage balancing device according to claim 3, characterized in that: The pressure equalizing ring external protection component (82) includes an upper protection shell (821), and the inner diameter adjustable clamping stabilization component (81) includes a clamping inner ring (811). The upper protection shell (821) is arranged on the top of the clamping inner ring (811), and the bottom of the clamping inner ring (811) is provided with a lower protection shell (822). The outer ends of the surfaces of the upper protection shell (821) and the lower protection shell (822) are provided with a first connecting hole (823), and a first clamping bolt (824) is provided inside the first connecting hole (823). A main connecting rod (825) is inserted into the inside of the first connecting hole (823), and the main connecting rod A lower protective shell (826) of a pressure equalizing ring is inserted into one end of (825) away from the upper protective shell (821) and the lower protective shell (822); an upper protective shell (827) of a pressure equalizing ring is arranged at one end of the lower protective shell (826) of the pressure equalizing ring away from the main connecting rod (825); a second connecting hole (828) is opened at the outer end of the surface of the lower protective shell (826) of the pressure equalizing ring and the upper protective shell (827); a second clamping bolt (829) is arranged inside the second connecting hole (828); and a pressure equalizing ring (8201) is installed inside the lower protective shell (826) of the pressure equalizing ring and the upper protective shell (827) of the pressure equalizing ring.

5. The split all-optical current transformer voltage balancing device according to claim 4, characterized in that: The first connection holes (823) are distributed in an annular shape at the outer ends of the surfaces of the upper protective shell (821) and the lower protective shell (822); the upper protective shell (821) and the lower protective shell (822) are connected together via a first clamping bolt (824).

6. The split all-optical current transformer voltage balancing device according to claim 5, characterized in that: The second connection holes (828) are distributed in a ring shape on the outer ends of the surfaces of the lower protective shell (826) of the pressure equalizing ring and the upper protective shell (827) of the pressure equalizing ring. The lower protective shell (826) of the pressure equalizing ring and the upper protective shell (827) of the pressure equalizing ring are connected together via a second clamping bolt (829).

7. The split all-optical current transformer voltage balancing device according to claim 6, characterized in that: The main connecting rod (825) is distributed in a ring shape at the top of the upper protective shell (821) and the bottom of the lower protective shell (822); the top of the upper protective shell (821) and the bottom of the lower protective shell (822) are both provided with the main connecting rod (825), the equalizing ring lower protective shell (826), the equalizing ring upper protective shell (827), the second connecting hole (828), the second clamping bolt (829) and the equalizing ring (8201).

8. The split all-optical current transformer voltage balancing device according to claim 7, characterized in that: The tube mother limiting mechanism (7) comprises a telescopic column (71), a cable opening (3) is provided on the surface of the current transformer (1), the telescopic column (71) is fixedly connected to the inner surface of the cable opening (3), a spring (72) is sleeved on the surface of the telescopic column (71), an end of the telescopic column (71) away from the cable opening (3) is fixedly connected to an insulating clamping plate (73), both left and right ends of the top of the current transformer (1) are fixedly connected to a connecting frame (74), a bottom end of the connecting frame (74) away from the current transformer (1) is fixedly connected to a connecting plate (75), and a stainless steel limiting ring (76) is fixedly connected to the bottom of the connecting plate (75).

9. The split all-optical current transformer voltage balancing device according to claim 8, characterized in that: A tube mother (9) penetrates the interior of the cable opening (3), and the tube mother (9) penetrates a stainless steel limiting ring (76).

10. The split all-optical current transformer voltage balancing device according to claim 9, characterized in that: The bottom end of the current transformer (1) is fixedly connected to a transformer mounting seat (2), and an insulator (6) is mounted on the surface of the insulator mounting column (5).

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