Transformer neutral point gap grounding protection device

Abstract

The utility model relates to the technical field of neutral point gap grounding protection devices, and discloses a transformer neutral point gap grounding protection device which comprises an equipment stand column, a lifting mechanism is arranged in the equipment stand column, an adjusting mechanism is arranged on the top of the equipment stand column, the lifting mechanism comprises a lifting assembly and a limiting assembly, and the limiting assembly is arranged on the lifting assembly. The limiting assembly is arranged on the right side of the lifting assembly. The position of the electric operation box can be adjusted according to the height of a worker or the operation preference of the worker, the debugging work of the worker is facilitated, a clamping disc is clamped and limited through a limiting rod, and the working efficiency is improved. According to the electric operation box, the situation that the position of the electric operation box moves in the debugging process of a worker due to the fact that the handle is touched by mistake, and the debugging work of the worker is affected is prevented, the distance between the zinc oxide lightning arrester and the current transformer can be adjusted according to the actual use requirement, and then the smoothness of a circuit during discharging can be improved.

Description

Technical Field

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

[0002] 110kV and 220kV are the main voltage levels of the power supply network. Due to the high voltage, the neutral point is generally directly grounded. Due to the requirements of relay protection setting configuration and prevention of communication interference, in order to limit the single-phase short-circuit current, some transformers use an ungrounded neutral point. Under this operating mode, lightning strikes, single-phase grounding short-circuit faults, etc. will cause neutral point overvoltage, and most transformers are graded insulated. Therefore, overvoltage poses a great threat to the insulation of the neutral point, and protection devices must be installed to prevent accidents.

[0003] According to the description of a transformer neutral point gap grounding protection device disclosed in the patent website (authorization announcement number: CN218377483U), "The utility model relates to the field of voltage protection technology, and discloses a transformer neutral point gap grounding protection device, which solves the problem that the current base is easily shaken by external collision. It includes a base, a device column is installed at the bottom of the base, a connecting mechanism is connected between the base and the device column, a grounding plate and a counter are installed on the front of the device column, an electric operating mechanism is installed on the left side of the device column, a current transformer is installed on the top of the base, and a zinc oxide lightning arrester is installed on the left side of the current transformer; the utility model cooperates between the limit cylinder and the support rod and the sleeve, and then when the base is collided, the first spring is extended and retracted, and the cooperation between the movable ring and the rotating block and the movable rod and the rotating cylinder makes the second spring extended and retracted, and the elastic action of the first spring and the second spring absorbs the force, thereby buffering the base, and at the same time, the damper is used to reduce the shock of the base to prevent the base from shaking."

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During use, the utility model can make the equipment column move upward and rotate through the cooperation between the set limit cylinder, the support rod and the sleeve. However, in actual use, since the height of the cement column is fixed and the protection device needs to be connected to the transformer, the height of the electric operating mechanism at its bottom cannot be adjusted according to the height of the operator, which makes it inconvenient for the operator to install and debug. Therefore, it is necessary to improve a transformer neutral point gap grounding protection device to solve the above problem. Utility Model Content

[0006] The utility model aims to provide a transformer neutral point gap grounding protection device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: a transformer neutral point gap grounding protection device, comprising an equipment column, a lifting mechanism is arranged inside the equipment column, and an adjustment mechanism is arranged on the top of the equipment column;

[0008] The lifting mechanism comprises a lifting component and a limiting component, and the limiting component is arranged on the right side of the lifting component.

[0009] Preferably, the lifting assembly includes a rotating rod, the rotating rod is fixedly installed inside the equipment column, a gear is fixedly installed on the outside of the rotating rod, a worm gear is fixedly installed on the outside of the gear, a rack is slidably installed inside the equipment column, an electric operation box is fixedly installed on the left side of the rack, a worm is rotatably installed inside the equipment column, and a handle is fixedly installed on the right side of the worm to adjust the position of the electric operation box, so that the position of the electric operation box can be adjusted according to the height or operation preference of the staff, thereby facilitating the staff's debugging work.

[0010] Preferably, a slide groove is opened at the corresponding position of the equipment column and the rack, and the rack is slidably installed inside the slide groove, and passes through the slide groove to be fixedly installed with the electric operation box, the gear is meshed with the rack, the worm wheel is meshed with the worm, and a through hole is opened at the corresponding position of the equipment column and the handle, and the handle passes through the through hole and is fixedly installed with the worm, so that the height of the electric operation box can be adjusted.

[0011] Preferably, the limit assembly includes a fixed seat, which is fixedly installed on the right side of the equipment column, a limit rod is rotatably installed inside the fixed seat, a press plate is fixedly installed on the front side of the limit rod, a spring is fixedly installed on the left side of the press plate, and a card plate is fixedly installed on the outer side of the handle. The card plate is limited by the limit rod to prevent the handle from moving due to accidental touch during the debugging process of the staff, thereby affecting the staff's debugging work.

[0012] Preferably, a clamping groove is provided at a position corresponding to the clamping plate and the limiting rod, and the limiting rod is clamped in the clamping groove to limit the handle to prevent accidental operation.

[0013] Preferably, the adjustment mechanism includes a fixed plate, which is fixedly installed on the top of the equipment column, a fixed frame is fixedly installed on the top of the fixed plate, a bidirectional threaded rod is rotatably installed inside the fixed frame, a zinc oxide lightning arrester is threadedly installed on the outer side of the bidirectional threaded rod, a current transformer is threadedly installed on the outer side of the bidirectional threaded rod, a handwheel is fixedly installed on the right side of the fixed frame, a fixing rope is fixedly installed on the top of the fixed plate, a pin is fixedly installed on the end of the fixing rope away from the fixed plate, and a neutral point lead terminal is fixedly installed on the top of the fixed plate, so that the distance between the zinc oxide lightning arrester and the current transformer can be adjusted according to actual usage requirements, thereby improving the patency of the circuit during discharge.

[0014] Preferably, a through hole is opened at the corresponding position of the fixing frame and the handwheel, and the handwheel is fixedly installed with the bidirectional threaded rod through the through hole, and a socket is opened at the corresponding position of the fixing frame and the current transformer and the pin, and the pin is inserted into the socket to adjust the distance between the zinc oxide lightning arrester and the current transformer.

[0015] Compared with the prior art, the utility model provides a transformer neutral point gap grounding protection device, which has the following beneficial effects:

[0016] 1. The neutral point gap grounding protection device of the transformer can adjust the position of the electric operation box during use through the provided lifting mechanism, so that the position of the electric operation box can be adjusted according to the height or operation preference of the staff, which is convenient for the staff's debugging work, and the limit rod is used to limit the card plate to prevent the position of the electric operation box from moving during the staff's debugging process due to accidental touch of the handle, thereby affecting the staff's debugging work.

[0017] 2. The transformer neutral point gap grounding protection device can adjust the distance between the zinc oxide arrester and the current transformer through the setting adjustment mechanism during use. The distance between the zinc oxide arrester and the current transformer can be adjusted according to actual use requirements, thereby improving the smoothness of the circuit during discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2This is a schematic diagram of the back structure of the lifting mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the appearance structure of the lifting component of the utility model;

[0022] Figure 4 This is a schematic diagram of the appearance structure of the limit assembly of the utility model;

[0023] Figure 5 This is a schematic diagram of the appearance structure of the adjustment mechanism of the utility model.

[0024] In the figure: 1. Equipment column; 2. Lifting mechanism; 21. Lifting assembly; 211. Rotating rod; 212. Gear; 213. Worm gear; 214. Rack; 215. Electric operation box; 216. Worm; 217. Handle; 22. Limiting assembly; 221. Fixed seat; 222. Limiting rod; 223. Press plate; 224. Spring; 225. Snap-on disk; 3. Adjusting mechanism; 31. Fixed plate; 32. Fixed frame; 33. Bidirectional threaded rod; 34. Zinc oxide arrester; 35. Current transformer; 36. Handwheel; 37. Fixed rope; 38. Pin; 39. Neutral point lead terminal. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1:

[0028] See also Figure 1-4 , the utility model provides a technical solution: a transformer neutral point gap grounding protection device, comprising an equipment column 1, a lifting mechanism 2 is arranged inside the equipment column 1, and an adjustment mechanism 3 is arranged on the top of the equipment column 1;

[0029] The lifting mechanism 2 includes a lifting component 21 and a limiting component 22 . The limiting component 22 is arranged on the right side of the lifting component 21 .

[0030] Furthermore, the lifting assembly 21 includes a rotating rod 211, which is fixedly installed inside the equipment column 1, a gear 212 is fixedly installed on the outside of the rotating rod 211, a worm gear 213 is fixedly installed on the outside of the gear 212, a rack 214 is slidably installed inside the equipment column 1, an electric operation box 215 is fixedly installed on the left side of the rack 214, a worm 216 is rotatably installed inside the equipment column 1, and a handle 217 is fixedly installed on the right side of the worm 216 to adjust the position of the electric operation box 215, so that the position of the electric operation box 215 can be adjusted according to the height or operation preference of the staff, which is convenient for the staff's debugging work.

[0031] Furthermore, a slide groove is opened at the corresponding position of the equipment column 1 and the rack 214, and the rack 214 is slidably installed inside the slide groove, and passes through the slide groove to be fixedly installed with the electric operation box 215, the gear 212 is meshed with the rack 214, the worm wheel 213 is meshed with the worm 216, and a through hole is opened at the corresponding position of the equipment column 1 and the handle 217, and the handle 217 passes through the through hole and is fixedly installed with the worm 216, so that the height of the electric operation box 215 can be adjusted.

[0032] Furthermore, the limit assembly 22 includes a fixed seat 221, which is fixedly installed on the right side of the equipment column 1. A limit rod 222 is rotatably installed inside the fixed seat 221. A press plate 223 is fixedly installed on the front of the limit rod 222, and a spring 224 is fixedly installed on the left side of the press plate 223. A clamping disk 225 is fixedly installed on the outer side of the handle 217. The limit rod 222 is used to clamp and limit the clamping disk 225 to prevent the handle 217 from being accidentally touched, causing the position of the electric operation box 215 to move during the debugging process of the staff, thereby affecting the debugging work of the staff.

[0033] Furthermore, a clamping groove is provided at the corresponding position of the clamping plate 225 and the limiting rod 222, and the limiting rod 222 is clamped in the clamping groove to limit the handle 217 to prevent accidental operation.

[0034] Embodiment two:

[0035] See also Figure 5, and combined with Example 1, it is further obtained that the adjustment mechanism 3 includes a fixed plate 31, the fixed plate 31 is fixedly installed on the top of the equipment column 1, a fixed frame 32 is fixedly installed on the top of the fixed plate 31, a two-way threaded rod 33 is rotatably installed inside the fixed frame 32, a zinc oxide lightning arrester 34 is threadedly installed on the outer side of the two-way threaded rod 33, a current transformer 35 is threadedly installed on the outer side of the two-way threaded rod 33, a hand wheel 36 is fixedly installed on the right side of the fixed frame 32, a fixed rope 37 is fixedly installed on the top of the fixed plate 31, a pin 38 is fixedly installed on the end of the fixed rope 37 away from the fixed plate 31, and a neutral point lead terminal 39 is fixedly installed on the top of the fixed plate 31, and the distance between the zinc oxide lightning arrester 34 and the current transformer 35 can be adjusted according to actual usage requirements, thereby improving the smoothness of the circuit during discharge.

[0036] Furthermore, through holes are opened at corresponding positions of the fixing frame 32 and the handwheel 36, and the handwheel 36 is fixedly installed with the bidirectional threaded rod 33 through the through hole, and sockets are opened at corresponding positions of the fixing frame 32 and the current transformer 35 and the plug 38, and the plug 38 is inserted into the socket to adjust the distance between the zinc oxide lightning arrester 34 and the current transformer 35.

[0037] In actual operation, when the device is used and the electric operation box 215 needs to be adjusted, the pressing plate 223 is pressed. After the pressing plate 223 is pressed, the spring 224 is compressed, driving the limit rod 222 to disengage from the limit of the clamping groove of the clamping plate 225, and the handle 217 is turned. The rotation of the handle 217 drives the worm 216 to rotate, and the rotation of the worm 216 drives the worm gear 213 meshing therewith to rotate. The rotation of the worm gear 213 drives the gear 212 to rotate, and the rotation of the gear 212 drives the rack 214 meshing therewith to move. The rack 214 moves to adjust the position of the electric operation box 215, so that the position can be adjusted according to the height or operation of the staff. It is preferred to adjust the position of the electric operation box 215 to facilitate the debugging work of the staff, and use the limit rod 222 to clamp and limit the card plate 225 to prevent the handle 217 from moving due to accidental touch during the debugging process of the staff, affecting the debugging work of the staff, and turning the handwheel 36. The rotation of the handwheel 36 drives the bidirectional threaded rod 33 to rotate. The bidirectional threaded rod 33 rotates to adjust the distance between the zinc oxide lightning arrester 34 and the current transformer 35. The distance between the zinc oxide lightning arrester 34 and the current transformer 35 can be adjusted according to actual usage needs, thereby improving the smoothness of the circuit during discharge.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A transformer neutral point gap grounding protection device, comprising a device column (1), characterized in that: A lifting mechanism (2) is provided inside the equipment column (1), and an adjustment mechanism (3) is provided on the top of the equipment column (1); The lifting mechanism (2) comprises a lifting component (21) and a limiting component (22), wherein the limiting component (22) is arranged on the right side of the lifting component (21).

2. A transformer neutral point gap grounding protection device according to claim 1, characterized in that: The lifting assembly (21) comprises a rotating rod (211), the rotating rod (211) is fixedly mounted inside the equipment column (1), a gear (212) is fixedly mounted on the outside of the rotating rod (211), a worm gear (213) is fixedly mounted on the outside of the gear (212), a rack (214) is slidably mounted inside the equipment column (1), an electric operating box (215) is fixedly mounted on the left side of the rack (214), a worm (216) is rotatably mounted inside the equipment column (1), and a handle (217) is fixedly mounted on the right side of the worm (216).

3. A transformer neutral point gap grounding protection device according to claim 2, characterized in that: A slide groove is provided at a position corresponding to the equipment column (1) and the rack (214), and the rack (214) is slidably installed inside the slide groove and passes through the slide groove to be fixedly installed with the electric operation box (215), the gear (212) is meshed with the rack (214), the worm wheel (213) is meshed with the worm (216), and a through hole is provided at a position corresponding to the equipment column (1) and the handle (217), and the handle (217) passes through the through hole to be fixedly installed with the worm (216).

4. A transformer neutral point gap grounding protection device according to claim 2, characterized in that: The limit assembly (22) comprises a fixed seat (221), the fixed seat (221) is fixedly mounted on the right side of the equipment column (1), a limit rod (222) is rotatably mounted inside the fixed seat (221), a pressing plate (223) is fixedly mounted on the front side of the limit rod (222), a spring (224) is fixedly mounted on the left side of the pressing plate (223), and a clamping plate (225) is fixedly mounted on the outer side of the handle (217).

5. A transformer neutral point gap grounding protection device according to claim 4, characterized in that: A clamping groove is provided at a position corresponding to the clamping plate (225) and the limiting rod (222), and the limiting rod (222) is clamped inside the clamping groove.

6. A transformer neutral point gap grounding protection device according to claim 1, characterized in that: The adjustment mechanism (3) comprises a fixing plate (31), wherein the fixing plate (31) is fixedly mounted on the top of the equipment column (1), a fixing frame (32) is fixedly mounted on the top of the fixing plate (31), a bidirectional threaded rod (33) is rotatably mounted inside the fixing frame (32), a zinc oxide lightning arrester (34) is threadedly mounted on the outer side of the bidirectional threaded rod (33), a current transformer (35) is threadedly mounted on the outer side of the bidirectional threaded rod (33), a hand wheel (36) is fixedly mounted on the right side of the fixing frame (32), a fixing rope (37) is fixedly mounted on the top of the fixing plate (31), a pin (38) is fixedly mounted on the end of the fixing rope (37) away from the fixing plate (31), and a neutral point lead terminal (39) is fixedly mounted on the top of the fixing plate (31).

7. A transformer neutral point gap grounding protection device according to claim 6, characterized in that: A through hole is provided at the corresponding position of the fixing frame (32) and the hand wheel (36), and the hand wheel (36) passes through the through hole and is fixedly installed with the bidirectional threaded rod (33). A plug hole is provided at the corresponding position of the fixing frame (32) and the current transformer (35) and the plug (38), and the plug (38) is plugged into the plug hole.

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