A transformer grounding assembly and grounding method thereof

Abstract

The present invention discloses a transformer grounding assembly and a grounding method thereof, comprising a grounding plate and a grounding pole connected by a conductive wire, and also comprising a rotating disk vertically rotatably mounted on the grounding plate, wherein at least two groups of rotating disks are provided, and at least two groups of rotating disks are vertically distributed on the grounding plate, and at least two groups of grounding poles are provided, and one group of grounding poles is connected to one rotating disk by the conductive wire; a support block is installed between two adjacent rotating disks, and the support block is used to conductively connect the two adjacent rotating disks. The present invention facilitates the conductive connection between the rotating disks by providing at least two groups of rotating disks rotatably connected to the grounding plate, and one rotating disk is connected to a grounding pole, and the provision of a conductive support block facilitates the conductive connection between the rotating disks, that is, it is convenient to adjust the angle between the grounding poles according to actual conditions while ensuring the safety performance of the transformer.

Description

Technical Field

[0001] The invention relates to the technical field of connection with earth materials in conductive connection, and in particular to a transformer grounding component and a grounding method thereof. Background Art

[0002] In order to facilitate the maintenance of the transformer, the metal shell of the transformer, the metal base and the neutral line will be grounded to ensure the safety of the staff. The grounding wire must have a small grounding resistance to ensure safety. Generally, the grounding resistance R is equal to the soil resistivity * conductor length / grounding area. In order to reduce the grounding resistance, it can be achieved by increasing the grounding area or reducing the soil resistivity.

[0003] The Chinese patent with patent announcement number: CN105958224B and patent name "Distribution Transformer Grounding Structure" discloses that the grounding area is increased by setting a grounding pole to reduce the grounding resistance. However, in actual operation, since the fixed wire is provided with a grounding pole connected to it, and the foundation pit is relatively deep and narrow (there cannot be large rocks at the bottom of the foundation pit or in the excavated foundation pit, so the angle between the excavated foundation pits in the mountains is uncertain), in general, the fixed wire is first welded to the grounding plate or the grounding pole. There is no problem in installing the above-mentioned grounding structure in places with sufficient installation space. However, for places with limited installation space, since the above-mentioned structure is not convenient for adjusting the angle between the poles, it is generally necessary for staff to enter the foundation pit for welding or adjustment, which is not convenient for actual on-site operation. In addition, on-site welding requires the use of a portable power supply. If the power supply fails, the construction period will be affected. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention provides a transformer grounding component and a grounding method thereof.

[0005] The present invention provides a transformer grounding assembly, comprising a grounding plate and a grounding pole connected by a conductive wire, and different from the prior art, further comprising a rotating disk vertically rotatably mounted on the grounding plate, wherein at least two groups of rotating disks are provided, and at least two groups of rotating disks are vertically distributed on the grounding plate, and at least two groups of grounding poles are provided, and one group of grounding poles is connected to one of the rotating disks by the conductive wire;

[0006] A support block is installed between the two adjacent rotating disks, and the support block is used to conductively connect the two adjacent rotating disks.

[0007] In order to facilitate the installation of the rotating disk and ensure the overall electrical connection of the assembly, as a further optimized solution of the present invention, a conductive column is installed at the bottom of the grounding plate through a conductive elastic member, and a through hole is opened on the conductive column. A conductive connecting wire is also provided on the grounding plate, and the conductive connecting wire passes through the through hole. The end of the conductive connecting wire away from the grounding plate is connected to a conductive chassis, the conductive column is located between the conductive chassis and the grounding plate, and the conductive elastic member is in a compressed state.

[0008] As a further optimized solution of the present invention, an annular groove is formed on the grounding plate, the conductive column has a portion extending to the annular groove, and the conductive elastic member is located in the annular groove.

[0009] As a further optimized solution of the present invention, a clamping hole is opened on the outer side of the conductive column, and the support block has a clamping column extending outward, and the clamping column matches the clamping hole.

[0010] As a further optimized solution of the present invention, the aperture of the through hole is larger than the outer diameter of the conductive connecting wire, the snap-in hole is connected to the through hole, the snap-in column is a conductive part, the snap-in column has a resisting portion and a snap-in portion, the snap-in portion is snap-in with the snap-in hole, the resisting portion resists with the conductive connecting wire to bend the conductive connecting wire and further compress the conductive elastic part.

[0011] As a further optimized solution of the present invention, the support blocks are provided with at least two groups, at least two groups of the support blocks are distributed in the vertical direction, and any two adjacent support blocks are distributed at 180° on the periphery of the conductive column so that the conductive connecting line in the conductive column is S-shaped.

[0012] As a further optimized solution of the present invention, a side hole is opened on the outer side of the conductive column, the side hole is connected to the through hole, and powdered graphite is filled in the through hole through the side hole.

[0013] As a further optimized solution of the present invention, the outer diameter of the upper rotating disk among any two adjacent rotating disks is smaller than the outer diameter of the lower rotating disk.

[0014] As a further optimized solution of the present invention, a connecting ring is provided on the rotating disk, and the connecting ring is provided in plurality and distributed circumferentially on the rotating disk. The conductive wire connected to the rotating disk located above is wound around the connecting ring located on the conductive ring below and then connected to the grounding pole.

[0015] A grounding method for a transformer grounding assembly is used for laying the above-mentioned transformer grounding assembly, comprising the following steps:

[0016] S1: First, a foundation pit is excavated according to the demand and site conditions, wherein the foundation pit includes a main foundation pit and an auxiliary foundation pit connected to the main foundation pit, and the main foundation pit and the auxiliary foundation pit have the same depth;

[0017] S2, placing the grounding plate with the rotating disk installed in the main foundation pit, and then rotating the rotating disk according to the distribution of the auxiliary foundation pits so that the grounding pole connected to each rotating disk is located in an auxiliary foundation pit;

[0018] S3, installing a support block between two adjacent rotating disks;

[0019] S4. Fill the soil layer in the foundation pit.

[0020] In the present invention, the transformer grounding assembly and grounding method thereof are proposed, by setting at least two groups of rotating disks rotatably connected to the grounding plate, and one rotating disk is connected to a grounding pole. The conductive connection between the rotating disks is ensured by setting a support block with a conductive function. That is, under the premise of ensuring the safety performance of the transformer, if it is inconvenient to weld at the construction site, the conductive wire can be welded to the rotating disk first, so as to facilitate the adjustment of the angle between the grounding poles according to the actual situation.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 A cross-sectional view of the connection between the conductive column and the ground plate in some embodiments of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the rotating disk in some embodiments of the present invention;

[0025] Figure 4 It is a schematic diagram of the connection structure between the rotating disk and the grounding pole in some embodiments of the present invention;

[0026] Figure 5 Schematic diagram of the conductive structure on the installation side in some embodiments of the present invention;

[0027] In the figure: 1. grounding plate; 2. grounding pole; 3. rotating disk; 4. supporting block; 5. conductive column; 50. through hole; 51. side hole; 52. snap-in hole; 6. conductive elastic member; 7. conductive connecting wire; 8. conductive chassis; 9. connecting ring; 90. first connecting ring; 91. second connecting ring; 10. conductive wire; 12. side conductive structure. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] like Figure 1-Figure 5 A transformer grounding assembly shown includes a grounding plate 1 and grounding poles 2 connected by conductive wires 10. The grounding poles 2 are provided with at least two groups. Different from the prior art, the grounding poles 2 are provided with at least two groups, and the grounding plate 1 is provided with rotating disks 3. The rotating disks 3 are provided with at least two groups. The at least two groups of rotating disks 3 are distributed on the grounding plate 1 in the vertical direction. One grounding pole 2 is connected to one rotating disk 3 by the conductive wire 10. The rotating disk 3 is rotated to change the angle between any two adjacent grounding poles 2, and a rotating interval is formed between any two adjacent rotating disks 3.

[0030] A support block 4 is installed between any two adjacent rotating disks 3 . The provision of the support block 4 further increases the overall stability of the grounding assembly. Preferably, the support block 4 is made of a conductive material, and the support block 4 electrically connects the two adjacent rotating disks 3 .

[0031] The present invention provides at least two groups of rotating disks 3 rotatably connected to the grounding plate 1, and one rotating disk 3 is connected to a grounding pole 2. The conductive support block 4 is provided to facilitate ensuring the conductive connection between the rotating disks 3. That is, the angle between the grounding poles 2 can be adjusted according to actual conditions while ensuring the safety performance of the transformer. It should be noted that this is to ensure the electrical connection between the rotating disks 3.

[0032] In this embodiment, preferably, a conductive component is installed at the bottom of the grounding plate 1, and the conductive component includes a conductive column 5, a conductive elastic member 6, a conductive connecting wire 7 and a conductive chassis 8. A through hole 50 is opened on the conductive column 5 along its axial direction, one end of the conductive connecting wire 7 is fixed to the grounding plate 1, and the other end of the conductive connecting wire 7 passes through the through hole 50 of the conductive column 5 and is fixed to the conductive chassis 8. An annular groove is opened at the bottom of the grounding plate 1, and the conductive column 5 is vertically slidably installed in the annular groove through the conductive elastic member 6. It should be noted that the conductive elastic member 6 can be fixed at the upper end of the conductive column 5 or in the annular groove, the conductive elastic member 6 can undergo elastic deformation in the vertical direction, the conductive elastic member 6 can be a conductive spring in the prior art, the outer diameter of the conductive chassis 8 is larger than the aperture of the through hole 50, and the conductive chassis 8 is located below the conductive column 5. When the conductive connecting wire 7 passes through the conductive column 5 and is connected to the conductive chassis 8, the conductive elastic member 6 is in a compressed state, ensuring the electrical connection between the conductive column 5 and the grounding plate 1, and at the same time ensuring the electrical connection between the conductive column 5 and the conductive chassis 8, thereby ensuring the safety of the transformer.

[0033] Based on the above embodiments, in some embodiments, preferably, a snap-in hole 52 is opened on the outer side of the conductive column 5, and a snap-in column extending outward is provided on the support block 4, and the snap-in column matches the snap-in hole 52, so as to facilitate the connection between the support block 4 and the conductive column 5.

[0034] Preferably, the aperture of the through hole 50 is larger than the outer diameter of the conductive connecting line 7, and the snap-in hole 52 is connected to the through hole 50. The snap-in column is a conductive part, and the snap-in column has a resisting portion and a snap-in portion. The snap-in portion is close to the supporting block 4 relative to the resisting portion. When the snap-in column matches the snap-in hole 52, the resisting portion resists the conductive connecting line 7 and causes the conductive connecting line 7 to bend and deform. In this process, the electrical connection between the supporting block 4 and the conductive connecting line 7 is guaranteed. At the same time, due to the squeezing of the conductive connecting line 7, the conductive elastic part 6 is compressed again to ensure the conductive connection between the conductive column 5 and the grounding plate 1 and the conductive chassis 8.

[0035] In some embodiments, preferably, the clamping portion is made of a conductive material, and the clamping portion is electrically connected to the conductive column 5 .

[0036] In some embodiments, based on the above embodiments, preferably, at least two groups of support blocks 4 are provided, and the contact positions of at least two groups of support blocks 4 and the conductive connecting wires 7 are distributed in the vertical direction, and any two adjacent support blocks 4 are distributed at 180° on the periphery of the conductive column 5, so that the conductive connecting wires 7 located in the conductive column 5 become S-shaped, further increasing the interference between the conductive connecting wires 7 and the support blocks 4 while ensuring the conductive connection between the conductive column 5 and the ground plate 1 and the conductive chassis 8.

[0037] In this embodiment, preferably, there is a side conductive structure 12 on the grounding plate 1 that is electrically connected to the conductive chassis 8 and the rotating disk 3, further improving the stability of the connection. The side conductive structure 12 can be connected to the grounding plate 1, the conductive chassis 8, and the rotating disk 3 by welding, further increasing the safety performance of the transformer.

[0038] Some embodiments are preferably based on the above embodiments, the side wall of the conductive column 5 is opened with a side hole 51 connected to the through hole 50, and the conductive connection effect is ensured by filling powdered graphite in the side hole 51, while ensuring the conductive connection between the conductive connecting wire 7 and the support block 4, thereby increasing the overall safety.

[0039] Preferably, in some embodiments, of any two adjacent rotating disks 3, the outer diameter of the rotating disk 3 located above is smaller than the outer diameter of the rotating disk 3 located below. After a soil layer is buried on the rotating disk 3, the interference of the support blocks 4 between the two adjacent rotating disks 3 is ensured, thereby ensuring the electrical connection of the two adjacent rotating disks 3. In some embodiments, the outer diameter of the lowest rotating disk 3 is smaller than the outer diameter of the conductive chassis 8.

[0040] Preferably, the conductive wire 10 connected to the upper rotating disk 3 is electrically connected to the rotating disk 3 located below, and in some embodiments, the conductive wire 10 connected to the rotating disk 3 located at the bottom is electrically connected to the conductive chassis 8 .

[0041] Specifically, a connecting ring 9 is provided on the outer periphery of the rotating disk 3, and in some embodiments, a connecting ring 9 is also provided on the conductive chassis 8. The conductive wire 10 connected to the upper rotating disk 3 is wound around the connecting ring 9 and then connected to the grounding pole 2. The conductive wire 10 of the rotating disk 3 located at the bottom is wound around the connecting ring 9 on the conductive chassis 8 and then connected to the grounding pole 2. Preferably, a plurality of connecting rings 9 are provided, and the plurality of connecting rings 9 are distributed along the circumference of the rotating disk 3, so as to further ensure the safety performance of the transformer and realize the preliminary relative positioning of the rotating disk 3.

[0042] In some embodiments, preferably, the connecting ring 9 includes a first connecting ring 90 and a second connecting ring 91, and the first connecting ring 90 and the second connecting ring 91 are distributed along the radial direction of the rotating disk 3, and the axis of the first connecting ring 90 is perpendicular to the axis of the second connecting ring 91, and a winding gap is formed between the first connecting ring 90 and the second connecting ring 91. The conductive wire 10 is first wound around the first connecting ring 90 and then wound around the second connecting ring 91 and then connected to the grounding pole 2, further ensuring the connection between the conductive wire 10 and the rotating disk 3 thereunder, thereby further increasing the safety performance of the transformer.

[0043] In the process of installing the grounding component, firstly, a foundation pit is dug according to the demand and the site conditions. The foundation pit includes a main foundation pit and an auxiliary foundation pit connected to the main foundation pit. The main foundation pit and the auxiliary foundation pit have the same depth.

[0044] Place the grounding plate 1 with the conductive column 5 installed in the main foundation pit, and rotate the rotating disk 3 according to the distribution of the auxiliary foundation pits so that the grounding pole 2 connected to the rotating disk 3 is located in an auxiliary foundation pit;

[0045] Then, a support block 4 is placed between adjacent rotating disks 3. In some embodiments with a conductive chassis 8, a support block 4 is placed between the conductive chassis 8 and the rotating disk 3 located at the bottom. Preferably, the support block 4 has a portion extending from the rotating disk 3 located above. Specifically, the support block 4 is pushed so that the clamping portion of the support block 4 matches the clamping hole 52, and the abutting portion abuts against the conductive connecting wire 7. After the plurality of support blocks 4 are installed, the conductive connecting wire 7 is in an S shape, and the conductive elastic member 6 is further compressed.

[0046] Then the conductive connecting wire 7 is wrapped around the connecting ring 9 and connected to the grounding pole 2, and the grounding pole 2 is fixed in the auxiliary foundation pit. Since the depth of the auxiliary foundation pit is equal to the depth of the main foundation pit, the conductive connecting wire 7 is further guaranteed to be in conflict with the conductive disk located below, further ensuring the conductive connection to increase the safety performance of the transformer.

[0047] Then, powdered graphite is filled in the through hole 50 of the conductive column 5 through the side hole 51;

[0048] In some embodiments in which the side conductive structure 12 is provided, after the powdered graphite is filled, the side conductive structure 12 is installed to achieve the connection between the ground plate 1 and each rotating disk 3 and the conductive chassis 8;

[0049] Then bury the soil layer in the main foundation pit and the auxiliary foundation pit.

[0050] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be mechanically connected, electrically connected, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transformer grounding assembly, comprising a grounding plate (1) and a grounding pole (2) connected by a conductive wire (10), It is characterized in that It also comprises a rotating disk (3) vertically rotatably mounted on the grounding plate (1), wherein at least two groups of the rotating disks (3) are provided, and at least two groups of the rotating disks (3) are distributed on the grounding plate (1) in a vertical direction, and at least two groups of the grounding poles (2) are provided, and one group of the grounding poles (2) is connected to one of the rotating disks (3) via the conductive wire (10); A support block (4) is installed between the two adjacent rotating disks (3), and the support block (4) is used to electrically connect the two adjacent rotating disks (3); A conductive column (5) is installed at the bottom of the grounding plate (1) via a conductive elastic member (6), a through hole (50) is opened on the conductive column (5), and a conductive connecting line (7) is also provided on the grounding plate (1), the conductive connecting line (7) passes through the through hole (50), and one end of the conductive connecting line (7) away from the grounding plate (1) is connected to a conductive chassis (8), the conductive column (5) is located between the conductive chassis (8) and the grounding plate (1), and the conductive elastic member (6) is in a compressed state.

2. The transformer grounding assembly according to claim 1, It is characterized in that An annular groove is formed on the grounding plate (1), the conductive column (5) has a portion extending to the annular groove, and the conductive elastic member (6) is located in the annular groove.

3. The transformer grounding assembly according to claim 1, It is characterized in that A clamping hole (52) is formed on the outer side of the conductive column (5), and a clamping column extending outward is provided on the support block (4), and the clamping column matches the clamping hole (52).

4. The transformer grounding assembly according to claim 3, It is characterized in that The hole diameter of the through hole (50) is larger than the outer diameter of the conductive connecting wire (7); the clamping hole (52) is connected to the through hole (50); the clamping column is a conductive member; the clamping column has a contact portion and a clamping portion; the clamping portion is clamped with the clamping hole (52); the contact portion contacts the conductive connecting wire (7) to bend the conductive connecting wire (7) and further compress the conductive elastic member (6).

5. The transformer grounding assembly according to claim 4, It is characterized in that At least two groups of the support blocks (4) are provided, and at least two groups of the support blocks (4) are distributed in a vertical direction, and any two adjacent support blocks (4) are distributed at 180° on the periphery of the conductive column (5) so that the conductive connection line (7) located in the conductive column (5) is S-shaped.

6. The transformer grounding assembly according to any one of claims 2 to 5, It is characterized in that A side hole (51) is opened on the outer side of the conductive column (5), the side hole (51) is connected to the through hole (50), and powdered graphite is filled in the through hole (50) through the side hole (51).

7. The transformer grounding assembly according to claim 1, It is characterized in that Of any two adjacent rotating disks (3), the outer diameter of the rotating disk (3) located above is smaller than the outer diameter of the rotating disk (3) located below.

8. The transformer grounding assembly according to claim 1, It is characterized in that The rotating disk (3) is provided with a connecting ring (9), and the connecting ring (9) is provided in plurality and circumferentially distributed on the rotating disk (3). The conductive wire (10) connected to the rotating disk (3) located at the top is wound around the connecting ring (9) located on the conductive ring at the bottom and then connected to the grounding pole (2).

9. A grounding method for a transformer grounding assembly, It is characterized in that The method for laying the transformer grounding assembly according to any one of claims 1 to 8 comprises the following steps: S1: First, a foundation pit is excavated according to the demand and site conditions, wherein the foundation pit includes a main foundation pit and an auxiliary foundation pit connected to the main foundation pit, and the main foundation pit and the auxiliary foundation pit have the same depth; S2, placing the grounding plate (1) equipped with the rotating disk (3) in the main foundation pit, and then rotating the rotating disk (3) according to the distribution of the auxiliary foundation pits so that the grounding pole (2) connected to each rotating disk (3) is located in an auxiliary foundation pit; S3, installing a support block (4) between two adjacent rotating disks (3); S4. Fill the soil layer in the foundation pit.

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