CN222355955U

CN222355955U - A gap protection device for neutral point of transformer

Info

Publication number: CN222355955U
Application number: CN202421108426.4U
Authority: CN
Inventors: 代永超; 刘淑芬; 王小辉; 代秀静
Original assignee: Hebei Lanche Electric Power Equipment Manufacturing Co ltd
Current assignee: Hebei Lanche Electric Power Equipment Manufacturing Co ltd
Priority date: 2024-05-21
Filing date: 2024-05-21
Publication date: 2025-01-14
Anticipated expiration: 2034-05-21

Abstract

The utility model relates to the technical field of neutral point gap protection, specifically to a gap protection device for the neutral point of a transformer, comprising a main body mechanism, a moving mechanism and a detection mechanism; the moving mechanism is installed on the top of the main body mechanism, and the detection mechanism is installed on the top of the main body mechanism and is located behind the moving mechanism. During use, the utility model adjusts the distance of the protection gap between the lightning arrester and the gap conductive rod according to the air pressure and humidity at the protection gap between the lightning arrester and the gap conductive rod, a controller starts a motor, the motor drives the gap conductive rod to move, and the distance of the protection gap between the lightning arrester and the gap conductive rod is adjusted, an infrared sensor detects the distance, so that the distance of the protection gap between the lightning arrester and the gap conductive rod is accurately controlled, and the protection gap between the lightning arrester and the gap conductive rod is automatically controlled, which saves time and labor and is conducive to the use of the gap protection of the neutral point of the transformer.

Description

Gap protection device for neutral point of transformer

Technical Field

The utility model relates to the technical field of neutral point gap protection, in particular to a gap protection device for a neutral point of a transformer.

Background

The transformer neutral point gap protection device is used for realizing two different operation modes of the grounded operation and the ungrounded operation of the neutral point of the transformer, so that the damage to the transformer caused by the rising of the voltage of the neutral point of the transformer due to the system fault is avoided, the transformer neutral point gap protection device comprises an isolating switch, a discharge gap, a lightning arrester and a current transformer which are fixed on a bracket, and the complete device is transported and carried in and out, but the discharge gap is generally between 95 and 320mm due to different actual use environments, different altitudes, different air humidity and different dust substance densities;

chinese publication (publication No. CN 214478429U) discloses a transformer neutral point gap protection device convenient for debugging, which comprises a bracket, a neutral point isolating switch, a neutral point arrester, a neutral point discharging gap and a transformer box, wherein the neutral point discharging gap comprises a first gap rod, a second gap rod, a guide pillar and an adjusting base, the adjusting base comprises a fixing plate, an adjusting plate and a fixing seat, the fixing seat is arranged in the adjusting plate and is fixed through a first positioning jackscrew, the adjusting plate is fixedly connected with the fixing plate through a second positioning jackscrew, a dovetail guide rail is arranged at the bottom of the adjusting plate, the dovetail guide rail is arranged in a dovetail groove on the fixing plate, the guide pillar is fixed on the fixing seat, the second gap rod is fixed at the top of the guide pillar, and the first gap rod is fixed at the top of the neutral point arrester and is opposite to the second gap rod. The transformer neutral point gap protection device with the structure can adjust the discharge gap according to actual conditions, is convenient to adjust, but in the actual use process, because the air humidity and the air pressure change every day, the distance of the protection gap is time-consuming and labor-consuming, the automatic adjustment of the protection gap distance cannot be realized, the labor intensity is increased, and the gap protection of the transformer neutral point is not facilitated.

Disclosure of utility model

In view of the above, the present utility model provides a gap protection device for a neutral point of a transformer, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.

The technical scheme of the utility model is realized in such a way that the gap protection device of the neutral point of the transformer comprises a main body mechanism, a moving mechanism and a detecting mechanism;

The moving mechanism is arranged at the top of the main body mechanism, the detecting mechanism is arranged at the top of the main body mechanism and is positioned at the rear of the moving mechanism, the main body mechanism further comprises a fixed plate, a through groove is formed in the upper surface of the fixed plate, a sliding block is slidably connected to the inner side wall of the through groove, a mutual inductor is fixedly connected to the top of the sliding block, a gap conducting rod is arranged at the top of the mutual inductor, and an infrared sensor is arranged at one side of the mutual inductor;

the upper surface fixedly connected with bracing piece of fixed plate, the top fixedly connected with second connecting plate of bracing piece, the last surface mounting of second connecting plate has air pressure sensor, the upper surface of second connecting plate is located air pressure sensor's one side is installed humidity transducer.

Further preferably, a motor is mounted on the lower surface of the fixing plate, a screw rod is fixedly connected to the output end of the motor, one end of the screw rod penetrates through the sliding block, and the outer side wall of the screw rod is in threaded connection with the sliding block.

Further preferably, one end of the screw rod is rotatably connected with a fixing block through a bearing, and the top of the fixing block is fixedly connected with the lower surface of the fixing plate.

Further preferably, a lightning arrester is mounted on the upper surface of the fixing plate.

Further preferably, the four corners of the bottom of the fixing plate are fixedly connected with supporting plates, the four repulsive sides of the supporting plates are fixedly connected with first connecting plates, and threaded through holes are formed in the upper surfaces of the first connecting plates.

Further preferably, a controller is mounted on the upper surface of the fixing plate, the air pressure sensor, the humidity sensor and the infrared sensor are in signal connection with the controller, and the controller is electrically connected with the motor.

Further preferably, the lightning arrester and the top of the gap conducting rod are coaxially and horizontally arranged at the same height.

By adopting the technical scheme, the embodiment of the utility model has the following advantages:

In the using process, the distance between the arrester and the gap conducting rod is adjusted according to the air pressure and the humidity of the protective gap between the arrester and the gap conducting rod, the motor is started by the controller, the gap conducting rod is driven by the motor to move, the distance between the arrester and the gap conducting rod is adjusted, the infrared sensor detects the distance, the distance between the arrester and the gap conducting rod is accurately controlled, the protective gap between the arrester and the gap conducting rod is automatically controlled, time and labor are saved, and the gap protection of the neutral point of the transformer is facilitated.

The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of a gap protection device for a transformer neutral point according to the present utility model;

FIG. 2 is a view of the structure of FIG. 1 according to the present utility model;

FIG. 3 is a diagram illustrating a two-view structure of FIG. 1 according to the present utility model;

Fig. 4 is a structural view of the moving mechanism of the present utility model.

The device comprises a main body mechanism, 11, a fixed plate, 12, a lightning arrester, 13, a supporting plate, 14, a first connecting plate, 15, a threaded through hole, 2, a moving mechanism, 21, a through groove, 22, a mutual inductor, 23, a gap conducting rod, 24, a motor, 25, a screw rod, 26, a fixed block, 27, a sliding block, 3, a detecting mechanism, 31, a supporting rod, 32, a second connecting plate, 33, an air pressure sensor, 34, a humidity sensor, 35, an infrared sensor, 36 and a controller.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 4, an embodiment of the present utility model provides a gap protection device for a neutral point of a transformer, which includes a main body mechanism 1, a moving mechanism 2, and a detecting mechanism 3;

The moving mechanism 2 is arranged at the top of the main body mechanism 1, the detecting mechanism 3 is arranged at the top of the main body mechanism 1 and is positioned at the rear of the moving mechanism 2, the main body mechanism 1 further comprises a fixed plate 11, a through groove 21 is formed in the upper surface of the fixed plate 11, a sliding block 27 is slidably connected to the inner side wall of the through groove 21, a mutual inductor 22 is fixedly connected to the top of the sliding block 27, a gap conducting rod 23 is arranged at the top of the mutual inductor 22, and an infrared sensor 35 is arranged at one side of the mutual inductor 22;

The upper surface fixedly connected with bracing piece 31 of fixed plate 11, the top fixedly connected with second connecting plate 32 of bracing piece 31, the upper surface mounting of second connecting plate 32 has air pressure sensor 33, and humidity transducer 34 is installed to the upper surface of second connecting plate 32 in one side of air pressure sensor 33.

In one embodiment, a motor 24 is arranged on the lower surface of the fixed plate 11, a screw rod 25 is fixedly connected to the output end of the motor 24, one end of the screw rod 25 penetrates through a sliding block 27, the outer side wall of the screw rod 25 is in threaded connection with the sliding block 27, and through the arrangement of the motor 24, the motor 24 drives the screw rod 25 to rotate in the sliding block 27 to drive the sliding block 27 to move, so that a transformer 22 at the top of the sliding block 27 is driven to move.

In one embodiment, one end of the screw rod 25 is rotatably connected with a fixed block 26 through a bearing, the top of the fixed block 26 is fixedly connected with the lower surface of the fixed plate 11, and the fixed block 26 is rotatably connected with the screw rod 25 through the arrangement of the fixed block 26, so that the stability of the screw rod 25 is improved.

In one embodiment, the upper surface of the fixing plate 11 is provided with a lightning arrester 12, and the lightning arrester 12 is arranged to prevent lightning strike.

In one embodiment, the four corners of the bottom of the fixing plate 11 are fixedly connected with the supporting plates 13, the repulsive sides of the four supporting plates 13 are fixedly connected with the first connecting plate 14, the upper surface of the first connecting plate 14 is provided with a threaded through hole 15, and the fixing bolt is inserted into the threaded through hole 15 to fix the position of the fixing plate 11.

In one embodiment, the upper surface of the fixing plate 11 is provided with a controller 36, the air pressure sensor 33, the humidity sensor 34 and the infrared sensor 35 are in signal connection with the controller 36, the controller 36 is electrically connected with the motor 24, and the motor 24 is controlled according to the data of the air pressure sensor 33, the humidity sensor 34 and the infrared sensor 35 through the arrangement of the controller 36.

In one embodiment, the top of the lightning arrester 12 and the gap conductive rod 23 are coaxially disposed horizontally at the same height such that a protective gap exists between the lightning arrester 12 and the gap conductive rod 23.

When the lightning arrester is in operation, the air pressure and the humidity at the protection gap between the lightning arrester 12 and the gap conducting rod 23 are detected through the air pressure sensor 33 and the humidity sensor 34, the distance of the protection gap between the lightning arrester 12 and the gap conducting rod 23 is adjusted according to the air pressure and the humidity, the controller 36 starts the motor 24, the motor 24 drives the screw rod 25 to rotate in the sliding block 27, and drives the sliding block 27 to move, so that the transformer 22 at the top of the sliding block 27 is driven to move, the gap conducting rod 23 on the transformer 22 moves, the distance of the protection gap between the lightning arrester 12 and the gap conducting rod 23 is adjusted, and the infrared sensor 35 detects the distance, so that the distance of the protection gap between the lightning arrester 12 and the gap conducting rod 23 is accurately controlled.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The gap protection device for the neutral point of the transformer is characterized by comprising a main body mechanism (1), a moving mechanism (2) and a detecting mechanism (3);

The moving mechanism (2) is arranged at the top of the main body mechanism (1), the detecting mechanism (3) is arranged at the top of the main body mechanism (1) and is positioned at the rear of the moving mechanism (2), the main body mechanism (1) further comprises a fixing plate (11), a through groove (21) is formed in the upper surface of the fixing plate (11), a sliding block (27) is slidably connected to the inner side wall of the through groove (21), a mutual inductor (22) is fixedly connected to the top of the sliding block (27), a gap conducting rod (23) is arranged at the top of the mutual inductor (22), and an infrared sensor (35) is arranged on one side of the mutual inductor (22);

The upper surface fixedly connected with bracing piece (31) of fixed plate (11), the top fixedly connected with second connecting plate (32) of bracing piece (31), the last surface mounting of second connecting plate (32) has baroceptor (33), the upper surface of second connecting plate (32) is located one side of baroceptor (33) is installed humidity transducer (34).

2. The gap protection device for the neutral point of the transformer according to claim 1, wherein a motor (24) is mounted on the lower surface of the fixing plate (11), a screw rod (25) is fixedly connected to the output end of the motor (24), one end of the screw rod (25) penetrates through the sliding block (27), and the outer side wall of the screw rod (25) is in threaded connection with the sliding block (27).

3. The gap protection device for the neutral point of the transformer according to claim 2, wherein one end of the screw rod (25) is rotatably connected with a fixing block (26) through a bearing, and the top of the fixing block (26) is fixedly connected with the lower surface of the fixing plate (11).

4. A gap protection device for a neutral point of a transformer according to claim 1, wherein an arrester (12) is mounted on an upper surface of the fixing plate (11).

5. The gap protection device for the neutral point of the transformer according to claim 1, wherein the four corners of the bottom of the fixing plate (11) are fixedly connected with supporting plates (13), one repulsive side of each supporting plate (13) is fixedly connected with a first connecting plate (14), and a threaded through hole (15) is formed in the upper surface of each first connecting plate (14).

6. A gap protection device for a neutral point of a transformer according to claim 2, wherein a controller (36) is mounted on an upper surface of the fixing plate (11), the air pressure sensor (33), the humidity sensor (34) and the infrared sensor (35) are in signal connection with the controller (36), and the controller (36) is electrically connected with the motor (24).

7. A gap protection device for a transformer neutral point according to claim 4, characterized in that the top of the lightning arrester (12) and the gap conducting rod (23) are coaxially arranged at the same height.