Safe intelligent current transformer for GIS (gas insulated switchgear)

Abstract

The utility model discloses an intelligent current transformer for a safety GIS, which belongs to the technical field of intelligent current transformers and comprises a fixed base, two fixed plates and an intelligent current transformer body are fixedly connected to the upper surface of the fixed base respectively, and a protective shell is fixedly connected to one side faces, close to each other, of the two fixed plates together. The upper surface of the protective shell is fixedly connected with a cooling liquid box, the left side face of the cooling liquid box fixedly communicates with an electromagnetic valve, and the output end of the electromagnetic valve fixedly communicates with a cooling pipe. According to the safety type intelligent current transformer for the GIS, through mutual cooperation of the cooling liquid box, the electromagnetic valve, the cooling pipe, the temperature sensor and the single chip microcomputer, the temperature of the working environment of the intelligent current transformer body can be controlled, and the situation that when the temperature exceeds the working temperature range of the current transformer, the precision of the current transformer is prone to being reduced is avoided; and the problem that the current transformer is damaged or the performance of the current transformer is damaged is solved.

Description

Technical Field

[0001] This application belongs to the field of intelligent current transformer technology, and particularly relates to a safe intelligent current transformer for GIS. Background Technology

[0002] A smart current transformer is a device that converts a large current into a small current for measurement. It works based on the principle of electromagnetic induction and consists of a closed iron core and windings. The primary winding has fewer turns and is connected in series in the current line to be measured, while the secondary winding has more turns and is connected in series in the measuring instrument and protection circuit.

[0003] The existing utility model with authorization announcement number CN215813009U discloses a current transformer for an intelligent molded case circuit breaker, including a protective shell and a transformer body. Sleeves are fixedly connected to the upper and lower positions on both sides of the inner cavity of the protective shell. Sleeve rods are movably connected to the inner cavity of the sleeves. A first compression spring is fixedly connected to the opposite side of the two sleeve rods. The end of the first compression spring away from the sleeve rod is fixedly connected to the connection point of the inner cavity of the sleeve.

[0004] The above technical solution, by setting up pull rods and pull blocks, allows for easy disassembly and maintenance of the transformer body by pulling the concave frame to both sides. This provides the advantage of facilitating the disassembly and maintenance of the current transformer. However, the above technical solution only facilitates the disassembly and maintenance of the transformer body through pull rods and pull blocks. The operating temperature range of the current transformer is usually between -25℃ and +55℃. When the temperature exceeds the operating temperature range of the current transformer, the temperature cannot be effectively controlled, which can easily lead to a decrease in the accuracy of the current transformer and cause damage to the current transformer or a deterioration in its performance.

[0005] To address these issues, we propose a safe intelligent current transformer for GIS. Utility Model Content

[0006] The purpose of this application is to solve the problem in the prior art that when the temperature exceeds the operating temperature range of the current transformer, the temperature cannot be effectively controlled, which easily leads to a decrease in the accuracy of the current transformer and causes damage or performance degradation of the current transformer. Therefore, a safe intelligent current transformer for GIS is proposed.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A safe intelligent current transformer for GIS includes a fixed base. Two fixed plates and an intelligent current transformer body are fixedly connected to the upper surface of the fixed base. A protective shell is fixedly connected to one side of the two fixed plates that are close to each other. A coolant tank is fixedly connected to the upper surface of the protective shell. A solenoid valve is fixedly connected to the left side of the coolant tank, and a cooling pipe is fixedly connected to the output end of the solenoid valve. Two first fixing bolts are threaded to the inner wall of each fixed plate. The outer surface of each set of first fixing bolts is threaded to the inner wall of the fixed base. Four second fixing bolts are threaded to the inner wall of the fixed base. A first connecting rod and a second connecting rod are fixedly connected to the left side of the intelligent current transformer body. A water inlet is provided on the upper surface of the coolant tank, and a rubber plug is inserted into the water inlet. A temperature sensor and a microcontroller are fixedly connected to the left side of the protective shell. The end of the first connecting rod away from the intelligent current transformer body and the end of the second connecting rod away from the intelligent current transformer body both penetrate the protective shell and extend to the outside of the protective shell.

[0009] Preferably, a reinforcing plate is fixedly connected to the outer surface of the main body of the intelligent current transformer, and the bottom surface of the reinforcing plate is fixedly connected to the upper surface of the fixed base.

[0010] Preferably, the inner wall of the reinforcing plate is threaded with four limiting bolts, and the outer surface of each set of limiting bolts is threadedly connected to the inner wall of the fixed base.

[0011] Preferably, two limiting blocks are fixedly connected to the outer surface of the coolant tank, and the bottom surface of each limiting block is fixedly connected to the upper surface of the protective shell.

[0012] Preferably, a support frame is fixedly connected to the outer surface of the solenoid valve, and the bottom surface of the support frame is fixedly connected to the upper surface of the protective shell.

[0013] Preferably, the outer surface of the cooling pipe is fixedly connected to four fixing brackets, and the side of each group of fixing brackets that is close to each other is fixedly connected to the outer surface of the protective shell.

[0014] In summary, the technical effects and advantages of this application are as follows:

[0015] By setting up a fixed base, protective shell, fixed plate, and the cooperation between the first fixed bolt and the second fixed bolt, the main body of the intelligent current transformer can be protected to prevent it from being damaged by the outside during use. The position of the main body of the intelligent current transformer can be restricted by the reinforcing plate and the limiting bolt to achieve the purpose of fixing and limiting, thereby enhancing the stability of the device.

[0016] By incorporating a coolant tank, solenoid valve, cooling pipe, temperature sensor, and microcontroller, the operating temperature of the intelligent current transformer can be controlled, enhancing the device's performance. This effectively prevents the current transformer from failing to control its temperature when it exceeds its operating range, which could lead to decreased accuracy, damage, or performance degradation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the intelligent current transformer for safety GIS of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the coolant tank of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the main body of the intelligent current transformer of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the cooling pipe of this utility model.

[0021] In the diagram: 1. Fixed base; 2. Protective housing; 3. Coolant tank; 4. Temperature sensor; 5. Fixing plate; 6. First fixing bolt; 7. Second fixing bolt; 8. Rubber plug; 9. Limiting block; 10. Cooling pipe; 11. Fixing frame; 12. Microcontroller; 13. First connecting rod; 14. Second connecting rod; 15. Water inlet; 16. Main body of intelligent current transformer; 17. Reinforcing plate; 18. Limiting bolt; 19. Solenoid valve; 20. Support frame. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-4 A safe intelligent current transformer for GIS includes a fixed base 1. Two fixed plates 5 and an intelligent current transformer body 16 are fixedly connected to the upper surface of the fixed base 1. A protective shell 2 is fixedly connected to one side of the two fixed plates 5 that are close to each other. A reinforcing plate 17 is fixedly connected to the outer surface of the intelligent current transformer body 16. The bottom surface of the reinforcing plate 17 is fixedly connected to the upper surface of the fixed base 1. The reinforcing plate 17 can reinforce the intelligent current transformer body 16 and the fixed base 1, enhance the stability of the device, and prevent its position from shifting or becoming unstable.

[0024] A coolant tank 3 is fixedly connected to the upper surface of the protective shell 2. A solenoid valve 19 is fixedly connected to the left side of the coolant tank 3. A cooling pipe 10 is fixedly connected to the output end of the solenoid valve 19. Four limit bolts 18 are threadedly connected to the inner wall of the reinforcing plate 17. The outer surface of each set of limit bolts 18 is threadedly connected to the inner wall of the fixed base 1. The limit bolts 18 can fix the reinforcing plate 17 and the fixed base 1, which plays a strong limiting role and prevents their position from shifting.

[0025] Each fixing plate 5 has two first fixing bolts 6 threadedly connected to its inner wall. The outer surface of each set of first fixing bolts 6 is threadedly connected to the inner wall of the fixing base 1. The inner wall of the fixing base 1 is threadedly connected to four second fixing bolts 7. The outer surface of the coolant tank 3 is fixedly connected to two limiting blocks 9. The bottom surface of each limiting block 9 is fixedly connected to the upper surface of the protective shell 2. The limiting blocks 9 can restrict the position of the coolant tank 3, effectively preventing it from shaking or shifting during use.

[0026] The left side of the main body 16 of the intelligent current transformer is fixedly connected to a first connecting rod 13 and a second connecting rod 14. A water inlet hole 15 is opened on the upper surface of the coolant tank 3. A rubber plug 8 is snapped into the inside of the water inlet hole 15. A support frame 20 is fixedly connected to the outer surface of the solenoid valve 19. The bottom surface of the support frame 20 is fixedly connected to the upper surface of the protective shell 2. The support frame 20 can fix the solenoid valve 19 and the protective shell 2, and play a fixed support role to prevent them from swaying during operation.

[0027] Temperature sensor 4 and microcontroller 12 are fixedly connected to the left side of the protective housing 2. The end of the first connecting rod 13 away from the main body 16 of the intelligent current transformer and the end of the second connecting rod 14 of the main body 16 of the intelligent current transformer both pass through the protective housing 2 and extend to the outside of the protective housing 2. Four fixing brackets 11 are fixedly connected to the outer surface of the cooling pipe 10. The side of each group of fixing brackets 11 that is close to each other is fixedly connected to the outer surface of the protective housing 2. The fixing brackets 11 can fix the cooling pipe 10 and the protective housing 2, effectively preventing them from shaking during use.

[0028] The working principle of this utility model is as follows: In use, firstly, sufficient coolant is added to the coolant tank 3 through the water inlet 15. Then, the water inlet 15 is blocked with a rubber stopper 8 to enhance the applicability of the device and effectively prevent the coolant in the coolant tank 3 from being contaminated by the outside. When the ambient temperature is high and the device is in use, the temperature sensor 4 transmits a signal to the microcontroller 12. Then, the output of the solenoid valve 19 delivers the coolant in the coolant tank 3 to the cooling pipe 10, whereby the coolant in the cooling pipe 10 will evaporate. During the evaporation process, the coolant absorbs heat, thereby lowering the temperature inside the protective shell 2 and keeping it below 55°C. This keeps the operating temperature of the intelligent current transformer body 16 normal, achieving the purpose of controlling the operating temperature and enhancing the device's performance. It effectively avoids the problem that when the temperature exceeds the operating temperature range of the current transformer, it is impossible to effectively control the temperature, which can easily lead to a decrease in the accuracy of the current transformer and damage or performance degradation of the current transformer.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safe intelligent current transformer for GIS, comprising a fixed base (1), characterized in that: The upper surface of the fixed base (1) is fixedly connected to two fixed plates (5) and the main body (16) of the intelligent current transformer. The two fixed plates (5) are fixedly connected to a protective shell (2) on their adjacent sides. A coolant tank (3) is fixedly connected to the upper surface of the protective shell (2). A solenoid valve (19) is fixedly connected to the left side of the coolant tank (3). A cooling pipe (10) is fixedly connected to the output end of the solenoid valve (19). Two first fixing bolts (6) are threadedly connected to the inner wall of each fixed plate (5). The outer surface of each set of first fixing bolts (6) is threadedly connected to the inner wall of the fixed base (1). 1) The inner wall is threaded with four second fixing bolts (7). The left side of the intelligent current transformer body (16) is fixedly connected with a first connecting rod (13) and a second connecting rod (14). The upper surface of the coolant tank (3) is provided with a water inlet hole (15). A rubber plug (8) is snapped into the inside of the water inlet hole (15). The left side of the protective shell (2) is fixedly connected with a temperature sensor (4) and a microcontroller (12). The end of the first connecting rod (13) away from the intelligent current transformer body (16) and the end of the second connecting rod (14) from the intelligent current transformer body (16) both penetrate the protective shell (2) and extend to the outside of the protective shell (2).

2. The intelligent current transformer for safe GIS according to claim 1, characterized in that: The outer surface of the main body (16) of the intelligent current transformer is fixedly connected to a reinforcing plate (17), and the bottom surface of the reinforcing plate (17) is fixedly connected to the upper surface of the fixed base (1).

3. The intelligent current transformer for safe GIS according to claim 2, characterized in that: The inner wall of the reinforcing plate (17) is threaded with four limiting bolts (18), and the outer surface of each set of limiting bolts (18) is threadedly connected to the inner wall of the fixed base (1).

4. A smart current transformer for safe GIS according to claim 1, characterized in that: Two limiting blocks (9) are fixedly connected to the outer surface of the coolant tank (3), and the bottom surface of each limiting block (9) is fixedly connected to the upper surface of the protective shell (2).

5. A smart current transformer for safe GIS according to claim 1, characterized in that: The outer surface of the solenoid valve (19) is fixedly connected to a support frame (20), and the bottom surface of the support frame (20) is fixedly connected to the upper surface of the protective shell (2).

6. A smart current transformer for safe GIS according to claim 1, characterized in that: The outer surface of the cooling pipe (10) is fixedly connected to four fixing brackets (11), and the side of each group of fixing brackets (11) that is close to each other is fixedly connected to the outer surface of the protective shell (2).

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