Three-phase overvoltage protector

Abstract

The utility model relates to a three-phase overvoltage protector, which comprises a rotating upper body, a fixed lower body, an upper terminal, a lower terminal and a flexible connection wire, the rotating upper body is connected to the upper side of the fixed lower body and can rotate on the upper side of the fixed lower body, the upper terminal is connected to the top end of the rotating upper body through the flexible connection wire, and the lower terminal is connected to the top end of the fixed lower body through the flexible connection wire. The lower terminal is fixed on the bottom surface of the fixed lower body, the outer side of the rotating upper body is provided with a protruding index, and the side surface of the fixed lower body is provided with index scales. According to the utility model, the arrangement of the overvoltage protector is optimized, the structural design of the traditional overvoltage protector is changed, the overvoltage protector capable of realizing the adjusting function is designed, the safety and the application range of the protector are greatly improved, and the overvoltage protector is simple in adjusting principle, convenient to use and suitable for popularization and application.

Description

Technical Field

[0001] The utility model relates to the field of electricity, in particular to a three-phase overvoltage protector. Background Technique

[0002] An overvoltage protector is a device that, in a circuit, when an overvoltage occurs, controls a relay to open the circuit to protect the safety of the connected circuit and the electrical appliance end, avoiding economic losses. There are many types of traditional overvoltage protectors, but they cannot adjust the overvoltage range. They all use protectors with a fixed overvoltage range, and the general utilization rate of protectors for different circuits and applications is too low. In the field of three-phase electricity, since the voltages in the cables are the same, the same overvoltage protector can be used to control the three lines separately. Therefore, a three-phase overvoltage protector is designed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a three-phase overvoltage protector to solve the above technical problems. To achieve the above purpose, the following technical solutions are adopted in the utility model:

[0004] A three-phase overvoltage protector includes a rotating upper body, a fixed lower body, upper terminals, lower terminals, and flexible wires. The rotating upper body is connected to the upper side of the fixed lower body, and the rotating upper body can rotate on the upper side of the fixed lower body. The upper terminals are connected to the top of the rotating upper body through flexible wires. The lower terminals are fixed to the bottom surface of the fixed lower body. A protruding indicator is arranged on the outer side of the rotating upper body, and an indicator scale is arranged on the side surface of the fixed lower body.

[0005] Based on the above technical solution, the rotating upper body is composed of an internal guide rod, a sliding contact, a guide rod fixing frame, and an upper body housing. The internal guide rod is fixed inside the upper body housing through the guide rod fixing frame. The sliding contact is fixed to the bottom end of the internal guide rod. The top end of the internal guide rod is connected to the flexible wire. The fixed lower body is composed of a non-closed circular ring fuse, a fuse connecting guide rod, a circular ring supporting plate, and a lower body housing. The circular ring supporting plate is fixed in the middle section inside the lower body housing. The non-closed circular ring fuse is fixed on the circular ring supporting plate. The side end of the fuse connecting guide rod is connected to the side end of the non-closed circular ring fuse, and the bottom end of the fuse connecting guide rod is connected to the lower terminals. The bottom end of the upper body housing is connected to the inner top side of the lower body housing. The sliding contact is arranged on the top side of the non-closed circular ring fuse and is always in contact connection with the non-closed circular ring fuse.

[0006] Compared with the prior art, the utility model has the following advantages: The utility model optimizes the setting of the overvoltage protector, changes the structural design of the traditional overvoltage protector, designs an overvoltage protector that can achieve an adjustment function, greatly improves the safety and application range of the protector, and has a simple adjustment principle, is convenient to use, and is suitable for popularization. Brief Description of the Drawings

[0007] Figure 1 This is the overall external view diagram of the present utility model.

[0008] Figure 2 This is the semi-sectional schematic diagram of the structure of the present utility model.

[0009] Figure 3 This is the schematic diagram of the connection plane of the present structure of the present utility model.

[0010] Figure 4 This is the electrical schematic diagram of the present structure of the present utility model.

[0011] In the figures: the rotating upper body 1, the fixed lower body 2, the upper terminal 3, the lower terminal 4, the flexible wire 5, the protruding indicator 6, the indicator scale 7, the internal guide rod 8, the sliding contact 9, the guide rod fixing bracket 10, the upper body housing 11, the non-closed ring fuse 12, the fuse connecting guide rod 13, the ring supporting plate 14, the lower body housing 15. Detailed Description of the Preferred Embodiment

[0012] The following further elaborates the present utility model in detail in conjunction with the drawings and specific embodiments.

[0013] A three-phase overvoltage protector includes a rotating upper body 1, a fixed lower body 2, an upper terminal 3, a lower terminal 4, and a flexible wire 5. The rotating upper body 1 is connected to the upper side of the fixed lower body 2, and the rotating upper body 1 can rotate on the upper side of the fixed lower body. The upper terminal 3 is connected to the top of the rotating upper body 1 through the flexible wire 5. The lower terminal 4 is fixed to the bottom surface of the fixed lower body 2. A protruding indicator 6 is provided on the outer side of the rotating upper body 1, and an indicator scale 7 is provided on the side surface of the fixed lower body 2.

[0014] The rotating upper body 1 is composed of an internal guide rod 8, a sliding contact 9, a guide rod fixing bracket 10, and an upper body housing 11. The internal guide rod 8 is fixed inside the upper body housing 11 through the guide rod fixing bracket 10. The sliding contact 9 is fixed to the bottom end of the internal guide rod 8. The top end of the internal guide rod 8 is connected to the flexible wire 5. The fixed lower body 2 is composed of a non-closed ring fuse 12, a fuse connecting guide rod 13, a ring supporting plate 14, and a lower body housing 15. The ring supporting plate 14 is fixed in the middle section inside the lower body housing 15. The non-closed ring fuse 12 is fixed on the ring supporting plate 14. The side end of the fuse connecting guide rod 13 is connected to the side end of the non-closed ring fuse 12, and the bottom end of the fuse connecting guide rod 13 is connected to the lower terminal 4. The bottom end of the upper body housing 11 is connected to the inner top side of the lower body housing 15. The sliding contact 9 is arranged on the top side of the non-closed ring fuse 12, and the sliding contact 9 is always in contact connection with the non-closed ring fuse 12.

[0015] Working principle of the utility model: The principle of this structure is simple. A set of non-closed ring fuses 12 are connected in the circuit, and different voltage range adjustments are realized through the change of their lengths, so that the protection range of the equipment at the power consumption end can be accurately controlled. The non-closed ring fuse 12 therein uses a highly sensitive thermally variable conductive material to achieve the adjustment process and functions.

[0016] The adjustment process is simple. Rotating the upper body 1 drives the internal guide rod 8 and the sliding contact 9 inside to rotate. After rotation, the sliding contact 9 will gradually involve non-closed ring fuses 12 of different lengths in the circuit. When overvoltage occurs, the non-closed ring fuse 12 will heat up and melt due to its characteristics of passing high voltage and high current, protecting the circuit. During its normal working process, the voltage and current will not cause the highly sensitive thermally variable conductive material to melt, ensuring the normal operation of the circuit.

[0017] The above is the preferred embodiment of the utility model. For those of ordinary skill in the art, according to the teachings of the utility model, without departing from the principle and spirit of the utility model, the changes, modifications, substitutions, and variations made to the implementation manners still fall within the protection scope of the utility model.

Claims

1. A three-phase overvoltage protector, characterized in that: The invention comprises a rotating upper body (1), a fixed lower body (2), an upper terminal (3), a lower terminal (4), and a flexible wire (5); the rotating upper body (1) is connected to the upper side of the fixed lower body (2), and the rotating upper body (1) can rotate on the upper side of the fixed lower body; the upper terminal (3) is connected to the top of the rotating upper body (1) through the flexible wire (5); the lower terminal (4) is fixed to the bottom surface of the fixed lower body (2); a protruding indicator (6) is arranged on the outer side of the rotating upper body (1); and an indicator scale (7) is arranged on the side surface of the fixed lower body (2).

2. A three-phase overvoltage protector according to claim 1, characterized in that: The rotating upper body (1) is composed of an internal guide rod (8), a sliding contact (9), a guide rod fixing frame (10), and an upper body shell (11); the internal guide rod (8) is fixed to the inside of the upper body shell (11) through the guide rod fixing frame (10); the sliding contact (9) is fixed to the bottom end of the internal guide rod (8); the top end of the internal guide rod (8) is connected to a flexible wiring (5); the fixed lower body (2) is composed of a non-closed circular ring fuse (12), a fuse connecting guide rod (13), a circular ring support plate (14), and a lower body shell (15); the circular ring support plate (14) is connected to the upper body shell (15); the inner guide rod (8) is fixed to the inner body shell (11) through the guide rod fixing frame (10); the sliding contact (9) is fixed to the bottom end of the internal guide rod (8); the top end of the internal guide rod (8) is connected to a flexible wiring (5); the fixed lower body (2) is composed of a non-closed circular ring fuse (12), a fuse connecting guide rod (13), a circular ring support plate (14), and a lower body shell (15); the inner guide rod (8) is fixed to the inner body shell (11) through the guide rod fixing frame (10); the inner guide rod (8) is fixed to the inner body shell (11) through the guide rod fixing frame (10); the sliding contact (9) is fixed to the bottom end of the internal guide rod (8); the top end of the internal guide rod (8) is connected to the flexible wiring (5); the fixed lower body (2) is composed of a non-closed circular ring fuse (12), a fuse connecting guide rod (13), a circular ring support plate (14), and a lower body shell (15); the inner guide rod (8) is fixed to the inner body shell (11) through the guide rod fixing frame (10); the inner guide rod (8) is fixed to the inner body shell (11) through the guide rod fixing frame (10); the inner guide rod (8) is fixed to the inner The plate (14) is fixed to the middle section inside the lower body shell (15); the non-closed annular fuse (12) is fixed on the annular support plate (14); the side end of the fuse connecting guide rod (13) is connected to the side end of the non-closed annular fuse (12); and the bottom end of the fuse connecting guide rod (13) is connected to the lower terminal (4); the bottom end of the upper body shell (11) is connected to the inner top side of the lower body shell (15); the sliding contact (9) is arranged on the top side of the non-closed annular fuse (12); and the sliding contact (9) is always in contact with and connected to the non-closed annular fuse (12).

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