Gap protection device of transformer neutral point

Abstract

The utility model relates to the technical field of neutral point gap protection, in particular to a gap protection device for a transformer neutral point, which comprises a main body mechanism, a moving mechanism and a detection mechanism, the moving mechanism is installed at the top of the main body mechanism, and the detection mechanism is installed at the top of the main body mechanism and located behind the moving mechanism. The distance of the protection gap between the lightning arrester and the gap conducting rod is adjusted, the controller starts the motor, the motor drives the gap conducting rod to move, the distance of the protection gap between the lightning arrester and the gap conducting rod is adjusted, and the infrared sensor detects the distance. The distance of the protection gap between the lightning arrester and the gap conducting rod is accurately controlled, the protection gap between the lightning arrester and the gap conducting rod is automatically controlled, time and labor are saved, and gap protection of the neutral point of the transformer is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of neutral point gap protection, in particular to a gap protection device for the neutral point of a transformer. Background Art

[0002] The transformer neutral point gap protection device is used to realize two different operation modes of transformer neutral point grounding and ungrounding, so as to avoid damage to the transformer caused by the increase of transformer neutral point voltage due to system failure. The transformer neutral point gap protection device includes an isolating switch, a discharge gap, a lightning arrester and a current transformer fixed on a bracket. The complete set of equipment is transported and carried in and out, but due to the actual use environment, altitude, air humidity and dust density, the discharge gap is different. Generally, the discharge gap is between 95--320mm;

[0003] A Chinese patent publication (publication number: CN214478429U) discloses a transformer neutral point gap protection device that is easy to debug, which includes a bracket, a neutral point disconnector, a neutral point arrester, a neutral point discharge gap and a transformer box. The neutral point discharge gap includes a first gap rod, a second gap rod, a guide column and an adjustment base. The adjustment base includes a fixed plate, an adjustment plate and a fixed seat. The fixed seat is arranged in the adjustment plate and fixed by a first positioning top screw. The adjustment plate is fixedly connected to the fixed plate by a second positioning top screw. A dovetail guide rail is arranged at the bottom of the adjustment plate, and the dovetail guide rail is arranged in a dovetail groove on the fixed plate. A guide column is fixed on the fixed seat, and a second gap rod is fixed on the top of the guide column. The first gap rod is fixed to the top of the neutral point arrester and is arranged opposite to the second gap rod. A transformer neutral point gap protection device that is easy to debug adopts the above structure. The discharge gap can be adjusted according to actual conditions and is easy to adjust. However, in actual use, since the air humidity and air pressure change every day, it is time-consuming and laborious to manually adjust the distance of the protection gap. The protection gap distance cannot be automatically adjusted, which increases labor intensity and is not conducive to the use of gap protection of the transformer neutral point. Therefore, a transformer neutral point gap protection device is proposed. Utility Model Content

[0004] In view of this, the utility model provides a gap protection device for the neutral point of a transformer to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of the utility model is implemented as follows: a gap protection device for the neutral point of a transformer, comprising a main body mechanism, a moving mechanism and a detection mechanism;

[0006] The moving mechanism is installed on the top of the main mechanism, the detection mechanism is installed on the top of the main mechanism and is located behind the moving mechanism, the main mechanism also includes a fixing plate, the upper surface of the fixing plate is provided with a through slot, the inner side wall of the through slot is slidably connected with a slider, the top of the slider is fixedly connected with a mutual inductor, the top of the mutual inductor is installed with a gap conductive rod, and one side of the mutual inductor is installed with an infrared sensor;

[0007] The upper surface of the fixed plate is fixedly connected to a support rod, the top of the support rod is fixedly connected to a second connecting plate, an air pressure sensor is installed on the upper surface of the second connecting plate, and a humidity sensor is installed on the upper surface of the second connecting plate on one side of the air pressure sensor.

[0008] Further preferably, a motor is installed 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 passes through the slider, and the outer side wall of the screw rod is threadedly connected to the slider.

[0009] Further preferably, one end of the screw rod is rotatably connected to a fixed block via a bearing, and the top of the fixed block is fixedly connected to the lower surface of the fixed plate.

[0010] Further preferably, a lightning arrester is installed on the upper surface of the fixing plate.

[0011] Further preferably, the four bottom corners of the fixing plate are fixedly connected to support plates, the repelling sides of the four support plates are fixedly connected to first connecting plates, and the upper surface of the first connecting plate is provided with threaded through holes.

[0012] Further preferably, a controller is installed on the upper surface of the fixing plate, the air pressure sensor, the humidity sensor and the infrared sensor are signal-connected to the controller, and the controller is electrically connected to the motor.

[0013] Further preferably, the arrester and the top of the gap conductive rod are coaxially arranged at the same height and horizontally.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0015] During use of the utility model, the distance of the protective gap between the lightning arrester and the gap conductive rod is adjusted according to the air pressure and humidity at the protective gap between the lightning arrester and the gap conductive rod, the controller starts the motor, the motor drives the gap conductive rod to move, the distance of the protective gap between the lightning arrester and the gap conductive rod is adjusted, the infrared sensor detects the distance, so that the distance of the protective gap between the lightning arrester and the gap conductive rod is accurately controlled, and the protective gap between the lightning arrester and the gap conductive rod is automatically controlled, which saves time and labor and is beneficial to the use of gap protection of the neutral point of the transformer.

[0016] The above summary is for the purpose of description 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 utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a structural diagram of the gap protection device for the neutral point of the transformer of the utility model;

[0019] Figure 2 For this utility model Figure 1 A one-view structural diagram;

[0020] Figure 3 For this utility model Figure 1 The two-view structure diagram of

[0021] Figure 4 It is a structural diagram of the mobile mechanism of the utility model.

[0022] Figure numerals: 1. Main body; 11. Fixed plate; 12. Lightning arrester; 13. Support plate; 14. First connecting plate; 15. Threaded through hole; 2. Moving mechanism; 21. Through slot; 22. Mutual inductor; 23. Gap conductive rod; 24. Motor; 25. Screw rod; 26. Fixed block; 27. Slider; 3. Detection mechanism; 31. Support rod; 32. Second connecting plate; 33. Air pressure sensor; 34. Humidity sensor; 35. Infrared sensor; 36. Controller. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown, the embodiment of the utility model provides a gap protection device for the neutral point of a transformer, including a main mechanism 1, a moving mechanism 2 and a detection mechanism 3;

[0026] The moving mechanism 2 is installed on the top of the main mechanism 1, and the detection mechanism 3 is installed on the top of the main mechanism 1 and is located behind the moving mechanism 2. The main mechanism 1 also includes a fixing plate 11, and a through groove 21 is opened on the upper surface of the fixing plate 11. A slider 27 is slidably connected to the inner side wall of the through groove 21, and a mutual inductor 22 is fixedly connected to the top of the slider 27. A gap conductive rod 23 is installed on the top of the mutual inductor 22, and an infrared sensor 35 is installed on one side of the mutual inductor 22.

[0027] A support rod 31 is fixedly connected to the upper surface of the fixed plate 11, a second connecting plate 32 is fixedly connected to the top of the support rod 31, an air pressure sensor 33 is installed on the upper surface of the second connecting plate 32, and a humidity sensor 34 is installed on the upper surface of the second connecting plate 32 on one side of the air pressure sensor 33.

[0028] In one embodiment, a motor 24 is installed on the lower surface of the fixed plate 11, and a screw rod 25 is fixedly connected to the output end of the motor 24. One end of the screw rod 25 passes through the slider 27, and the outer wall of the screw rod 25 is threadedly connected to the slider 27. Through the setting of the motor 24, the motor 24 drives the screw rod 25 to rotate in the slider 27, drives the slider 27 to move, and thereby drives the mutual inductor 22 on the top of the slider 27 to move.

[0029] In one embodiment, one end of the screw rod 25 is rotatably connected to a fixed block 26 via a bearing, and the top of the fixed block 26 is fixedly connected to the lower surface of the fixed plate 11; through the setting of the fixed block 26, the fixed block 26 is rotatably connected to the screw rod 25, thereby improving the stability of the screw rod 25.

[0030] In one embodiment, a lightning arrester 12 is installed on the upper surface of the fixing plate 11; the lightning arrester 12 can prevent lightning strikes.

[0031] In one embodiment, the four bottom corners of the fixing plate 11 are fixedly connected to support plates 13, and the repelling sides of the four support plates 13 are fixedly connected to first connecting plates 14, and the upper surface of the first connecting plate 14 is provided with threaded through holes 15; through the setting of the threaded through holes 15, fixing bolts are inserted into the threaded through holes 15 to fix the position of the fixing plate 11.

[0032] In one embodiment, a controller 36 is installed on the upper surface of the fixed plate 11, and the air pressure sensor 33, the humidity sensor 34 and the infrared sensor 35 are connected to the controller 36 signal, and the controller 36 is electrically connected to the motor 24; through the setting of the controller 36, the motor 24 is controlled according to the data of the air pressure sensor 33, the humidity sensor 34 and the infrared sensor 35.

[0033] In one embodiment, the tops of the lightning arrester 12 and the gap conductive rod 23 are coaxially arranged at the same height, so that a protective gap exists between the lightning arrester 12 and the gap conductive rod 23 .

[0034] When the utility model is working: the air pressure and humidity at the protective gap between the lightning arrester 12 and the gap conductive rod 23 are detected by the air pressure sensor 33 and the humidity sensor 34, and the distance of the protective gap between the lightning arrester 12 and the gap conductive rod 23 is adjusted according to the air pressure and humidity. The controller 36 starts the motor 24, and the motor 24 drives the screw rod 25 to rotate in the slider 27, drives the slider 27 to move, thereby driving the mutual inductor 22 on the top of the slider 27 to move, and the gap conductive rod 23 on the mutual inductor 22 to move, and the distance of the protective gap between the lightning arrester 12 and the gap conductive rod 23 is adjusted. The infrared sensor 35 detects the distance, so that the distance of the protective gap between the lightning arrester 12 and the gap conductive rod 23 can be accurately controlled.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A gap protection device for a neutral point of a transformer, characterized in that: It comprises a main body mechanism (1), a moving mechanism (2) and a detection mechanism (3); The mobile mechanism (2) is installed on the top of the main mechanism (1), the detection mechanism (3) is installed on the top of the main mechanism (1) and is located behind the mobile mechanism (2), the main mechanism (1) also includes a fixing plate (11), the upper surface of the fixing plate (11) is provided with a through groove (21), the inner side wall of the through groove (21) is slidably connected with a slider (27), the top of the slider (27) is fixedly connected with a mutual inductor (22), the top of the mutual inductor (22) is installed with a gap conductive rod (23), and one side of the mutual inductor (22) is installed with an infrared sensor (35); The upper surface of the fixed plate (11) is fixedly connected to a support rod (31), the top of the support rod (31) is fixedly connected to a second connecting plate (32), an air pressure sensor (33) is installed on the upper surface of the second connecting plate (32), and a humidity sensor (34) is installed on the upper surface of the second connecting plate (32) at one side of the air pressure sensor (33).

2. A transformer neutral point gap protection device according to claim 1, characterized in that: A motor (24) is mounted on the lower surface of the fixing plate (11), and a screw rod (25) is fixedly connected to the output end of the motor (24), one end of the screw rod (25) passes through the slider (27), and the outer side wall of the screw rod (25) is threadedly connected to the slider (27).

3. A transformer neutral point gap protection device according to claim 2, characterized in that: One end of the screw rod (25) is rotatably connected to a fixed block (26) via a bearing, and the top of the fixed block (26) is fixedly connected to the lower surface of the fixed plate (11).

4. A transformer neutral point gap protection device according to claim 1, characterized in that: A lightning arrester (12) is installed on the upper surface of the fixing plate (11).

5. The gap protection device for the neutral point of a transformer according to claim 1, characterized in that: The four bottom corners of the fixing plate (11) are fixedly connected to support plates (13), and the repelling sides of the four support plates (13) are fixedly connected to first connecting plates (14), and the upper surface of the first connecting plate (14) is provided with a threaded through hole (15).

6. A transformer neutral point gap protection device according to claim 2, characterized in that: A controller (36) is installed on the upper surface of the fixing plate (11); the air pressure sensor (33), the humidity sensor (34) and the infrared sensor (35) are signal-connected to the controller (36); and the controller (36) is electrically connected to the motor (24).

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

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