Insulation assembly for 10kV voltage transformer

Abstract

The utility model discloses an insulation assembly for a 10kV voltage transformer, which relates to the technical field of voltage transformers and comprises a voltage transformer and an insulation protection device. Four mounting blocks are fixedly connected to the surface of the voltage transformer, bolts are mounted in the four mounting blocks, three insulators are mounted at the top of the voltage transformer, and fourteen wiring terminals are mounted at the top of the voltage transformer; the insulation protection device comprises an insulation protection plate, two ejector rods, a pressing rod, two limiting clamping balls, two fixing clamping blocks and two springs, the insulation protection plate is slidably installed at the top of the voltage transformer, a containing groove is formed in the bottom of the insulation protection plate, and four wiring terminals on the rear side are hidden in the containing groove; the four wiring terminals for experiments on the rear side are hidden in the placement grooves, so that the wiring terminals are prevented from being exposed outside, the wiring terminals are prevented from being etched by atmospheric environment, rain, snow, wind, sand and the like, and the rusting phenomenon of the wiring terminals is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a voltage transformer technical field, especially 10kV voltage transformer insulating assembly for a kind of. BACKGROUND

[0002] Voltage transformer is similar to transformer, and it is used to transform voltage. But the purpose of transformer is to facilitate the transmission of electric energy, so the capacity is very large, generally in kilovolt ampere or megavolt ampere as the unit of calculation. The purpose of voltage transformer is to supply power to measuring instruments and relay protection devices, to measure the voltage, power and energy of the line, or to protect valuable equipment, motors and transformers in the line when the line fails. Therefore, the capacity of voltage transformer is very small.

[0003] The existing outdoor voltage transformer is matched for use in power system and electrical equipment. The actual operation of the product directly connects the wiring terminal with the high-voltage bus for electrical connection, usually using lead cable to fasten with auxiliary wiring lug bolt, etc. The voltage transformer usually has a wiring terminal for experiment. The experimental wiring terminal is not used in the normal operation state of the voltage transformer, so that the experimental wiring terminal is directly exposed to the atmosphere. According to the application effect and user feedback for many years, the wiring terminal is eroded by atmospheric environment, rain, snow, wind sand, etc. for a long time. The terminal is prone to rust. In severe cases, it may cause poor electrical contact or open circuit phenomenon, affecting the safe operation of power supply. UTILITY MODEL CONTENT

[0004] The utility model aims at solving one of the technical problems in the prior art, providing a 10kV voltage transformer insulating assembly, which can solve the problem of long-term atmospheric environment, rain, snow, wind sand, etc. eroding the wiring terminal, which is prone to rust at the terminal. In severe cases, it may cause poor electrical contact or open circuit phenomenon, affecting the safe operation of power supply.

[0005] To achieve the above object, the utility model provides the following technical scheme: A kind of kV voltage transformer is used insulation component, including voltage transformer and insulation protection device;The surface of voltage transformer is fixedly connected with four mounting blocks, the inside of four mounting blocks is equipped with bolt, the top of voltage transformer is equipped with three insulators, the top of voltage transformer is equipped with fourteen terminal blocks;Insulation protection device includes insulation protection plate, two top rods, pressure rod, two limit balls, two fixed blocks and two springs, insulation protection plate is slidably installed at the top of voltage transformer, recess is set in the bottom of insulation protection plate, four terminal blocks on rear side are hidden inside the recess, two top rods are slidably connected in the inside of insulation protection plate, pressure rod is fixedly connected at the rear end of two top rods, two limit balls are fixedly connected at the front end of two top rods, two ends of insulation protection plate are slidably connected in the inside of two grooves, two fixed blocks are slidably connected in the inside of two grooves, and the end of two fixed blocks opposite to each other is equipped with extrusion slope.

[0006] Preferably, the two springs are fixedly connected to the surfaces of the two fixed blocks, and the ends of the springs away from the fixed blocks are fixedly connected to the inner walls of the grooves.

[0007] Preferably, the surfaces of the two fixed blocks are equipped with trapezoidal clamping grooves, and the surfaces of the two limit balls are in contact with the inner walls of the two trapezoidal clamping grooves.

[0008] Preferably, the top of the voltage transformer is fixedly connected with two positioning blocks.

[0009] Preferably, the surface of the insulation protection plate is fixedly connected with four L-shaped clamping blocks, and the four L-shaped clamping blocks are slidably connected to the surfaces of the two positioning blocks.

[0010] Preferably, the surfaces of the two positioning blocks are equipped with positioning clamping grooves, and the ends of the two fixed blocks opposite to each other are slidably clamped in the inside of the two positioning clamping grooves.

[0011] Preferably, a 10kV voltage transformer insulation component installation method comprises the following steps:

[0012] S1: when the four terminal blocks on the rear side need to be used, the staff can press the two top rods forward by the pressure rod, the two top rods slide forward and drive the two limit balls to slide forward and extrude the inner walls of the two trapezoidal clamping grooves, at this time, the two fixed blocks are relatively slid under the extrusion of the two limit balls, the fixed blocks slide and extrude the springs, the springs provide a reverse elastic force to the trapezoidal clamping grooves, and the two top rods can be limited by the two limit balls, to prevent the two top rods from moving out of the inside of the insulation protection plate, the two fixed blocks are relatively slid and move out of the inside of the two positioning clamping grooves, to further release the fixing effect on the insulation protection plate.

[0013] S2: The staff can directly slide the insulating protective plate upwards. The insulating protective plate slides upwards and drives the four L-shaped blocks to slide upwards and disengage from the surface of the two positioning blocks to complete the disassembly, and finally remove the protective function of the four rear terminals.

[0014] S3: When the staff needs to protect the four terminals on the rear side, after picking up the insulating protective plate, the staff slides it downwards. The insulating protective plate slides downwards and causes the four L-shaped locking blocks to slide downwards and lock onto the surface of the two positioning locking blocks. The four L-shaped locking blocks limit and fix the insulating protective plate, ensuring that the insulating protective plate can slide vertically downwards and preventing the insulating protective plate from tilting during installation. This not only makes it easier for the staff to install, but also allows the insulating protective plate to be fixed by the four L-shaped locking blocks, ensuring the stability of the installation and preventing the insulating protective plate from falling off and affecting the use of the voltage transformer, thus ensuring the normal use of the voltage transformer. The insulating protective plate slides downwards and causes the two fixing locking blocks to slide downwards and press the top of the two positioning locking blocks. The fixing locking blocks slide downwards and press the top of the positioning locking blocks through the pressing slope, thus causing the fixing locking blocks to slide and press the spring. The spring gives the fixing locking blocks a reverse elastic force.

[0015] S4: When the fixing block slides to the position of the positioning slot, the spring releases its elastic force and pushes the fixing block to slide in the opposite direction and engage with the inside of the positioning slot. The insulating protective plate can be fixedly installed on the surface of the two positioning blocks through the two positioning slots, thus completing the protection of the four rear terminals. This facilitates the installation of the insulating protective plate by the staff and improves the ease of installation. By hiding the four rear experimental terminals inside the placement groove, the terminals are prevented from being exposed to the outside, thus preventing them from being corroded by the atmospheric environment, rain, snow, sand, etc., preventing rusting, and avoiding poor electrical contact or open circuits, thereby ensuring the safe operation of the power supply.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The insulation components and installation method of the 10kV voltage transformer conceal the four terminals used for rear-side testing inside the placement groove, thereby preventing the terminals from being exposed to the outside, preventing the terminals from being corroded by the atmospheric environment, rain, snow, wind and sand, preventing the terminals from rusting, and preventing the terminals from causing poor electrical contact or open circuit, thus ensuring the safe operation of the power supply.

[0018] 2、The 10kV voltage transformer insulating assembly and its installation method, four L-shaped clamping blocks are used for limiting and fixing the insulating protective plate, so that the insulating protective plate can slide vertically downward, the insulating protective plate is prevented from being inclined during installation, the insulating protective plate can be conveniently installed by the staff, the insulating protective plate can be fixed by the four L-shaped clamping blocks, the stability of the insulating protective plate is guaranteed, the insulating protective plate is prevented from falling off to affect the use of the voltage transformer, and then the voltage transformer is normally used. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model is further illustrated below in combination with the drawings and embodiments:

[0020] Figure 1 It is the whole structure schematic diagram of a 10kV voltage transformer insulating assembly of the utility model;

[0021] Figure 2 It is the structure schematic diagram of the insulating protective plate after dismounting of the utility model;

[0022] Figure 3 It is the bottom structure schematic diagram of the insulating protective plate of the utility model;

[0023] Figure 4 It is the surface schematic diagram of the structure insulating protective plate of the utility model;

[0024] Figure 5 It is the section structure schematic diagram of the insulating protective plate of the utility model.

[0025] Reference signs: 1, voltage transformer; 2, mounting block; 3, bolt; 4, insulator; 5, wiring terminal; 6, insulating protective plate; 7, placing recess; 8, top rod; 9, pressing rod; 10, limiting clamping ball; 11, sliding groove; 12, fixed clamping block; 13, extrusion inclined surface; 14, spring; 15, trapezoidal clamping groove; 16, L-shaped clamping block; 17, positioning clamping block; 18, positioning clamping groove. DETAILED DESCRIPTION

[0026] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0027] In the description of the utility model, it needs to be understood that, when the direction description such as upper, lower, front, back, left, right and the like is referred to, the direction or positional relationship shown in the drawing is only for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the indicated device or element must have a particular direction, a particular direction structure and operation, and therefore it cannot be understood as a limitation on the utility model.

[0028] In the description of the utility model, greater than, less than, more than and the like are understood as not including the number, and above, below and the like are understood as including the number.If the first and second are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0029] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0030] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of insulating component for 10kV voltage transformer with limit ball, including voltage transformer 1 and insulation protection device, the surface of voltage transformer 1 is fixedly connected with four mounting blocks 2, the inside of four mounting blocks 2 is equipped with bolt 3, staff can install and fix voltage transformer 1 by spanner rotating four bolts 3.

[0031] Three insulators 4 are installed on the top of voltage transformer 1, fourteen terminal blocks 5 are installed on the top of voltage transformer 1, the insulation protection device includes insulation protection plate 6, two top rods 8, pressure bar 9, two limit balls 10, two fixed clamping blocks 12 and two springs 14, insulation protection plate 6 is slidably installed on the top of voltage transformer 1, placing groove 7 is formed in the bottom of insulation protection plate 6, and the rear four terminal blocks 5 are hidden inside the placing groove 7.

[0032] The rear four terminal blocks 5 are only used during experiment, under normal operating condition of voltage transformer 1, insulation protection plate 6 covers the top of the rear four terminal blocks 5, and makes the four terminal blocks 5 hidden inside the placing groove 7, to avoid terminal block 5 exposed outside, prevent terminal block 5 from being eroded by atmospheric environment, rain and snow, wind sand and the like, prevent terminal block 5 from causing rust phenomenon, avoid terminal block 5 from causing poor electrical contact or open circuit phenomenon, to ensure the safe operation of power supply.

[0033] Both top rods 8 are slidingly connected inside the insulating protective plate 6, the pressing rod 9 is fixedly connected to the rear ends of the two top rods 8, both limiting clamping balls 10 are fixedly connected to the front ends of the two top rods 8, both ends of the insulating protective plate 6 are provided with sliding grooves 11, both fixed clamping blocks 12 are slidingly connected inside the two sliding grooves 11, one end of each of the two fixed clamping blocks 12 is provided with an extrusion inclined surface 13, both ends of the two fixed clamping blocks 12 are fixedly connected with springs 14, one end of each of the springs 14 is fixedly connected to the inner wall of the sliding groove 11, the surfaces of the two fixed clamping blocks 12 are provided with trapezoidal clamping grooves 15, the surfaces of the two limiting clamping balls 10 are in contact with the inner walls of the two trapezoidal clamping grooves 15, the top of the voltage transformer 1 is fixedly connected with two positioning clamping blocks 17, the surface of the insulating protective plate 6 is fixedly connected with four L-shaped clamping blocks 16, the four L-shaped clamping blocks 16 are slidingly connected to the surfaces of the two positioning clamping blocks 17, the surfaces of the two positioning clamping blocks 17 are provided with positioning clamping grooves 18, one end of each of the two fixed clamping blocks 12 is slidingly clamped inside the two positioning clamping grooves 18.

[0034] Limiting clamping ball 10 kV voltage transformer insulating assembly installation method:

[0035] First step: when the four wiring terminals 5 on the rear side need to be used, the worker can press the two top rods 8 forward through the pressing rod 9, the two top rods 8 slide forward and drive the two limiting clamping balls 10 to slide forward and extrude the inner walls of the two trapezoidal clamping grooves 15, at this time, the two fixed clamping blocks 12 are relatively slid under the extrusion action of the two limiting clamping balls 10, the fixed clamping blocks 12 slide and extrude the springs 14, the springs 14 give the trapezoidal clamping grooves 15 a reverse elastic force, and through the two limiting clamping balls 10, the two top rods 8 can be limited, preventing the two top rods 8 from moving out of the inside of the insulating protective plate 6, the two fixed clamping blocks 12 relatively slide out of the inside of the two positioning clamping grooves 18, thereby releasing the fixing action on the insulating protective plate 6.

[0036] Second step: finally, the worker directly slides the insulating protective plate 6 upward, the insulating protective plate 6 slides upward and drives the four L-shaped clamping blocks 16 to slide upward and disengage from the surfaces of the two positioning clamping blocks 17, which can complete the disassembly, and finally release the protection action on the four wiring terminals 5 on the rear side.

[0037] Third step: when the staff needs to protect the four terminals 5 on the back side, the staff takes the insulation protection plate 6 and slides it directly downward. The insulation protection plate 6 slides downward and drives the four L-shaped clamping blocks 16 to slide downward and clamp on the surface of the two positioning clamping blocks 17. The four L-shaped clamping blocks 16 limit and fix the insulation protection plate 6, ensuring that the insulation protection plate 6 can slide vertically downward. This prevents the insulation protection plate 6 from tilting during installation, making it easier for the staff to install it. The four L-shaped clamping blocks 16 can also fix the insulation protection plate 6, ensuring its stability and preventing it from falling off and affecting the use of the voltage transformer 1. This ensures the normal use of the voltage transformer 1. The insulation protection plate 6 slides downward and drives the two fixed clamping blocks 12 to slide downward and press the top of the two positioning clamping blocks 17. The fixed clamping blocks 12 slide downward and press the top of the positioning clamping blocks 17 through the inclined surface 13, thereby causing the fixed clamping blocks 12 to slide and press the springs 14. The springs 14 provide a reverse spring force to the fixed clamping blocks 12.

[0038] Fourth step: when the fixed clamping blocks 12 slide to the position of the positioning clamping slots 18, the springs 14 can release the spring force and push the fixed clamping blocks 12 to slide reversely into the interior of the positioning clamping slots 18. The two positioning clamping slots 18 can fix and install the insulation protection plate 6 on the surface of the two positioning clamping blocks 17, finally completing the protection of the four terminals 5 on the back side. This makes it easier for the staff to install the insulation protection plate 6 and improves the convenience of installing the insulation protection plate 6. By hiding the four terminals 5 used for experiments on the back side inside the placement groove 7, the terminals 5 are prevented from being exposed to the outside environment, rain, snow, wind, and sand. This prevents the terminals 5 from being eroded and rusted, and prevents poor electrical contact or open circuit phenomena, thereby ensuring safe power operation.

[0039] Working principle: when the 10kV voltage transformer insulation assembly and its installation method is in use:

[0040] First step: when the four terminals 5 on the back side need to be used, the staff can press the two top rods 8 forward by pressing the rod 9. The two top rods 8 slide forward and drive the two limiting clamping balls 10 to slide forward and press the inner walls of the two trapezoidal clamping slots 15. At this time, the two fixed clamping blocks 12 are relatively slid under the pressing action of the two limiting clamping balls 10. The fixed clamping blocks 12 slide and press the springs 14. The springs 14 provide a reverse spring force to the trapezoidal clamping slots 15. The two limiting clamping balls 10 can limit the two top rods 8, preventing them from moving out of the interior of the insulation protection plate 6. The two fixed clamping blocks 12 relatively slide out of the interior of the two positioning clamping slots 18, thereby releasing the fixing effect of the insulation protection plate 6.

[0041] Second step: finally, the staff directly slides the insulating protective plate 6 to the upside, the insulating protective plate 6 slides to the upside and drives four L-shaped clamping blocks 16 to slide to the upside and separate from the surface of two positioning clamping blocks 17, so as to complete disassembly, and finally release the protection of the four wiring terminals 5 at the back.

[0042] Third step: when the staff needs to protect the four wiring terminals 5 at the back, the staff directly slides the insulating protective plate 6 to the downside after picking up the insulating protective plate 6, the insulating protective plate 6 slides to the downside and drives four L-shaped clamping blocks 16 to slide to the downside and clamp on the surface of two positioning clamping blocks 17, four L-shaped clamping blocks 16 limit and fix the insulating protective plate 6, so as to ensure that the insulating protective plate 6 can slide vertically to the downside, prevent the insulating protective plate 6 from tilting during installation, not only facilitate the staff to install it, but also fix the insulating protective plate 6 through four L-shaped clamping blocks 16, ensure the stability of the installation of the insulating protective plate 6, avoid the insulating protective plate 6 from falling off and affecting the use of the voltage transformer 1, and then ensure the normal use of the voltage transformer 1, the insulating protective plate 6 slides to the downside and drives two fixed clamping blocks 12 to slide to the downside and extrude the top of two positioning clamping blocks 17, the fixed clamping block 12 slides to the downside and extrudes the top of the positioning clamping block 17 through the extrusion slope 13, and then makes the fixed clamping block 12 slide and extrude the spring 14, the spring 14 provides the fixed clamping block 12 with a reverse elastic force.

[0043] Fourth step: when the fixed clamping block 12 slides to the position of the positioning clamping groove 18, the spring 14 can release the elastic force and push the fixed clamping block 12 to slide reversely and clamp into the inside of the positioning clamping groove 18, two positioning clamping grooves 18 can fix and install the insulating protective plate 6 on the surface of two positioning clamping blocks 17, finally complete the protection of the four wiring terminals 5 at the back, facilitate the staff to install the insulating protective plate 6, improve the convenience of the installation of the insulating protective plate 6, hide the four wiring terminals 5 used for experiment at the back in the inside of the placing groove 7, and then avoid the wiring terminals 5 from being exposed outside, prevent the wiring terminals 5 from being eroded by the atmospheric environment, rain, snow, wind sand and the like, prevent the wiring terminals 5 from causing rust phenomenon, avoid the wiring terminals 5 from causing poor electrical contact or open circuit phenomenon, and then ensure the safe operation of power supply.

[0044] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. An insulating assembly for a 10 kV voltage transformer, characterized in that, The utility model relates to a voltage transformer (1) and insulation protection device. Four mounting blocks (2) are fixedly connected to the surface of the voltage transformer (1), bolts (3) are arranged in the four mounting blocks (2), three insulators (4) are arranged on the top of the voltage transformer (1), and fourteen wiring terminals (5) are arranged on the top of the voltage transformer (1). The insulation protection device comprises an insulation protection plate (6), two top rods (8), a pressing rod (9), two limiting clamping balls (10), two fixed clamping blocks (12) and two springs (14), the insulation protection plate (6) is slidably arranged on the top of the voltage transformer (1), a placing groove (7) is formed in the bottom of the insulation protection plate (6), four wiring terminals (5) on the rear side are hidden in the placing groove (7), the two top rods (8) are slidably connected in the insulation protection plate (6), the pressing rod (9) is fixedly connected to the rear ends of the two top rods (8), the two limiting clamping balls (10) are fixedly connected to the front ends of the two top rods (8), slide grooves (11) are formed in the left and right ends of the insulation protection plate (6), the two fixed clamping blocks (12) are slidably connected in the two slide grooves (11), and extrusion inclined surfaces (13) are formed in the opposite ends of the two fixed clamping blocks (12). The two springs (14) are fixedly connected to the surfaces of the two fixed clamping blocks (12), and the ends, away from the fixed clamping blocks (12), of the springs (14) are fixedly connected to the inner walls of the slide grooves (11).

2. An insulation assembly for a 10 kV voltage transformer according to claim 1, characterized in that: The surfaces of the two fixed clamping blocks (12) are provided with trapezoidal clamping grooves (15), and the surfaces of the two limiting clamping balls (10) are in contact with the inner walls of the two trapezoidal clamping grooves (15).

3. An insulation assembly for a 10 kV voltage transformer according to claim 1, characterized in that: The top of the voltage transformer (1) is fixedly connected with two positioning clamping blocks (17).

4. An insulation assembly for a 10 kV voltage transformer according to claim 1, characterized in that: The surface of the insulation protection plate (6) is fixedly connected with four L-shaped clamping blocks (16), and the four L-shaped clamping blocks (16) are slidably connected to the surfaces of the two positioning clamping blocks (17).

5. An insulation assembly for a 10 kV voltage transformer according to claim 4, characterized in that: The surfaces of the two positioning clamping blocks (17) are provided with positioning clamping grooves (18), and the opposite ends of the two fixed clamping blocks (12) are slidably clamped in the two positioning clamping grooves (18).

6. An insulation assembly for a 10 kV voltage transformer according to claim 5, characterized in that: ​

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