CN220857240U - A repeated grounding structure for box-type transformers - Google Patents
A repeated grounding structure for box-type transformers Download PDFInfo
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- CN220857240U CN220857240U CN202322651263.6U CN202322651263U CN220857240U CN 220857240 U CN220857240 U CN 220857240U CN 202322651263 U CN202322651263 U CN 202322651263U CN 220857240 U CN220857240 U CN 220857240U
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Abstract
本申请公开了一种应用于箱变的重复接地结构，涉及箱式变电站领域。一种应用于箱变的重复接地结构，包括水平接地极、垂直接地极和引下线，水平接地极预埋于地坪下方，水平接地极的一端连接有接地杆；垂直接地极设置有两个，且两个垂直接地极分别与水平接地极的两端相连接，引下线与接地杆远离水平接地极的一端连接，引下线伸出地面，引下线伸出地面的一端连接有连接板，连接板远离引下线的一端通过螺栓与箱变进行螺纹连接。本申请具有提高接地机构电气性能的稳定性，降低老化的可能性的效果。
The present application discloses a repeated grounding structure applied to a box-type transformer, and relates to the field of box-type transformer substations. A repeated grounding structure applied to a box-type transformer includes a horizontal grounding electrode, a vertical grounding electrode, and a down conductor. The horizontal grounding electrode is pre-buried under the floor, and one end of the horizontal grounding electrode is connected to a grounding rod; two vertical grounding electrodes are provided, and the two vertical grounding electrodes are respectively connected to the two ends of the horizontal grounding electrode, and the down conductor is connected to the end of the grounding rod away from the horizontal grounding electrode, and the down conductor extends out of the ground, and the end of the down conductor extending out of the ground is connected to a connecting plate, and the end of the connecting plate away from the down conductor is threadedly connected to the box-type transformer through bolts. The present application has the effect of improving the stability of the electrical performance of the grounding mechanism and reducing the possibility of aging.
Description
Technical Field
The application relates to the field of box-type substations, in particular to a repeated grounding structure applied to a box transformer.
Background
The box transformer, which is called as box-type substation, is a compact complete power distribution device which combines high-voltage switch equipment, distribution transformer, low-voltage switch equipment, electric energy metering equipment, reactive compensation equipment and the like into one or more boxes according to a certain wiring scheme. The box transformer is suitable for residential communities, factory enterprises, mines and the like, and is suitable for construction and transformation of urban networks.
The grounding structure of the existing box transformer generally adopts a horizontal grounding electrode, and when the horizontal grounding electrode does not meet the requirement of a grounding resistance value, a vertical grounding electrode is added.
When the traditional grounding mode is adopted, the horizontal grounding electrode or the vertical grounding electrode is used, so that the electrical performance is unstable, aging is easy to generate along with the time, the contact resistance is large, and the danger is improved.
Disclosure of utility model
In order to improve the stability of the electrical performance of the grounding mechanism and reduce the possibility of aging, the application provides a repeated grounding structure applied to a box transformer.
The application provides a repeated grounding structure applied to a box transformer, which adopts the following technical scheme:
a repeating ground structure for a tank transformer, comprising:
The horizontal grounding electrode is pre-buried below the terrace, and one end of the horizontal grounding electrode is connected with a grounding rod;
the vertical grounding electrodes are arranged and are respectively connected with two ends of the horizontal grounding electrode;
The down lead is connected with one end of the grounding rod, which is far away from the horizontal grounding electrode, the down lead extends out of the ground, one end of the down lead, which extends out of the ground, is connected with a connecting plate, and one end of the connecting plate, which is far away from the down lead, is in threaded connection with the box transformer through a bolt.
Through adopting above-mentioned technical scheme, form the earth mat structure through a horizontal earthing pole and two perpendicular earthing poles to introduce the thunder and lightning into the earth, play the lightning protection effect, realize downlead and box transformer's detachable connection through connecting plate and bolt. The repeated grounding structure is arranged, so that voltage drop loss on a zero line is reduced, and the box transformer is safer in use by providing stable electrical performance.
Optionally, a ground trench is formed below the terrace, the horizontal ground electrode is buried in the ground trench, the vertical ground electrode is inserted into the ground of the ground trench, and backfill soil is paved above the ground trench.
By adopting the technical scheme, the installation foundation of the horizontal grounding electrode and the vertical grounding electrode is provided through the grounding ditch.
Optionally, the horizontal grounding electrode is pre-buried at a position of 0.8 meter below the terrace.
Optionally, the horizontal grounding electrode is welded with the grounding rod, and the welding opening is coated with antirust paint.
By adopting the technical scheme, the stability of the horizontal grounding electrode and the grounding rod is enhanced by welding, and the anti-corrosion and rust-proof performance is enhanced by the rust-proof paint.
Optionally, the horizontal grounding electrode and the vertical grounding electrode are connected by adopting a welding structure, and the welding opening is coated with antirust paint.
By adopting the technical scheme, the stability of the horizontal grounding electrode and the vertical grounding electrode is enhanced by welding, and the corrosion resistance and rust resistance are enhanced by the rust-proof paint.
Optionally, a reinforced angle steel is arranged at the interface of the down conductor and the grounding rod, and two sides of the reinforced angle steel are respectively connected with the down conductor and the grounding rod in a welding way.
Through adopting above-mentioned technical scheme, the setting of reinforcing angle steel strengthens the connection stability of downlead and earth bar.
Optionally, the interface department of horizontal earthing pole with perpendicular earthing pole is provided with the reinforcing angle steel, the both sides of reinforcing angle steel respectively with horizontal earthing pole with perpendicular earthing pole welded connection.
Through adopting above-mentioned technical scheme, strengthen the setting of angle steel and strengthen the connection stability of horizontal earthing pole and vertical earthing pole.
Optionally, the horizontal grounding electrode is made of round steel with the diameter of 16mm, and the length of the horizontal grounding electrode is 5m.
Alternatively, the down conductor is made of round steel with the diameter of 16mm, and the length of the down conductor is 4m.
Optionally, the vertical grounding electrode is set to be angle steel, and the length of the vertical grounding stage is 2.5m.
In summary, the application has the following beneficial effects:
1. The ground net structure is formed by the horizontal grounding electrode and the two vertical grounding electrodes, so that lightning is led into the ground, a lightning protection effect is achieved, and detachable connection of the down lead and the box transformer is realized through the connecting plate and the bolts. The repeated grounding structure is arranged, so that voltage drop loss on a zero line is reduced, and the box transformer is safer in use by providing stable electrical performance.
2. The installation basis of the horizontal grounding electrode and the vertical grounding electrode is provided through the grounding ditch.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment of the present application;
fig. 2 is a schematic structural diagram of a grounding structure according to an embodiment of the application.
Reference numerals illustrate: 1. a terrace; 11. a grounding ditch; 12. backfilling soil; 2. a horizontal ground electrode; 21. reinforcing angle steel; 3. a vertical grounding electrode; 31. a grounding head; 4. a grounding rod; 41. a down lead; 42. reinforcing angle steel; 5. a connecting plate; 6. and (5) a bolt.
Detailed Description
The application is described in further detail below with reference to fig. 1-2.
The embodiment of the application discloses a repeated grounding structure applied to a box transformer. Referring to fig. 1, a repeating ground structure applied to a box transformer includes a ground structure composed of a horizontal ground electrode 2 and a vertical ground electrode 3, the ground structure including the horizontal ground electrode 2, the vertical ground electrode 3, a ground rod 4, and a down conductor 41.
The box transformer is arranged above the terrace 1 and is provided with a high-voltage switch cabinet, a transformer and a low-voltage switch cabinet. The ground ditch 11 has been seted up to terrace 1 below, and ground ditch 11 sets up in the case and becomes the below, is provided with horizontal earthing pole 2 in the ground ditch 11, and horizontal earthing pole 2 sets up to diameter 16mm, length 5 m's round steel, and horizontal earthing pole 2 pre-buried in the position of ground ditch 11 apart from terrace 1 distance 0.8 m.
Referring to fig. 1 and 2, two vertical grounding electrodes 3 are provided, the two vertical grounding electrodes 3 are respectively connected to both ends of the horizontal grounding electrode 2, the vertical grounding electrodes 3 are set as angle steel, the specification is 50mm×5mm, and the length is set to 2.5m. The two vertical grounding poles 3 are vertically inserted into the ground surface of the grounding ditch 11, the grounding heads 31 are arranged at the lower ends of the vertical grounding poles 3, and the grounding heads 31 are arranged in a triangular shape. One side of the vertical grounding electrode 3 is welded with the horizontal grounding electrode 2, the length of a welding joint is not less than 120mm, the thickness of a welding joint is not less than 8mm, welding slag is removed after welding, antirust paint is coated, and the horizontal grounding electrode 2 is connected with the two vertical grounding electrodes 3 through welding.
One side of the vertical grounding electrode 3 is welded with the horizontal grounding electrode 2, and in order to enhance the connection tightness between the horizontal grounding electrode 2 and the vertical grounding electrode 3, a reinforcing angle steel 21 is arranged. Both ends of the reinforcing angle steel 21 are respectively welded with one side of the horizontal grounding electrode 2 and one side of the vertical grounding electrode 3.
The grounding rod 4 is connected to one end of the horizontal grounding electrode 2, the length direction of the grounding rod 4 is parallel to the length direction of the horizontal grounding electrode 2, the grounding rod 4 can be made of round steel with the diameter of 16mm, the connecting part of the grounding rod 4 and the horizontal grounding electrode 2 is connected through welding, and rust-proof paint is coated at the welding opening.
The down-lead 41 is connected to one end of the grounding rod 4 far away from the horizontal grounding electrode 2, the down-lead 41 is made of round steel with the diameter of 16mm and the length of 4m, and one end of the down-lead 41 far away from the grounding rod 4 extends out of the surface of the terrace 1. The connection port of the down conductor 41 and the grounding rod 4 is provided with a reinforcing angle steel 42, two sides of the reinforcing angle steel 42 are respectively welded with the down conductor 41 and the grounding rod 4, and the connection tightness of the down conductor 41 and the grounding rod 4 is improved through the reinforcing angle steel 42.
The lower ends of the grounding rod 4, the horizontal grounding electrode 2 and the down lead 41 are buried in the grounding ditch 11, and after the steel part is confirmed to be paved and welded, the grounding ditch 11 is paved with backfill 12, and the surface of the backfill 12 and the surface of the terrace 1 are kept flat.
The one end that down conductor 41 kept away from earth bar 4 is connected with connecting plate 5, and connecting plate 5 sets up to 160mm x 40mm x 4 mm's cuboid, and connecting plate 5 is kept away from down conductor 41's one end threaded connection has bolt 6, and bolt 6 threaded connection is in the shell of case becomes to realize the detachable connection of connecting plate 5 and case become through the screw thread, realize the connection of case becomes and down conductor 41 through connecting plate 5 and bolt 6.
The embodiment of the application provides a repeated grounding structure applied to a box transformer, which comprises the following implementation principles: the method comprises the steps of excavating a grounding ditch 11, inserting a vertical grounding electrode 3 into the ground of the grounding ditch 11, pre-burying a horizontal grounding electrode 2 at a position 0.8m away from the surface of a terrace 1, welding the vertical grounding electrode 3 at two ends of the horizontal grounding electrode 2, installing reinforcing angle steel 21, installing a grounding rod 4 at one end of the horizontal grounding electrode 2, and welding a down lead 41 and reinforcing angle steel 42. After the vertical grounding electrode 3, the horizontal grounding electrode 2, the grounding rod 4 and the down lead 41 are paved, the soil 12 is backfilled into the grounding ditch 11, so that the surface of the backfill 12 is leveled with the surface of the terrace 1. The box transformer is installed, a connecting plate 5 is welded and installed at one end of the down conductor 41 extending out of the ground, and the box transformer shell and the connecting plate 5 are fixed by using bolts 6.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. A repeating ground structure for a tank transformer, comprising:
the horizontal grounding electrode (2), the horizontal grounding electrode (2) is pre-buried below the terrace (1), and one end of the horizontal grounding electrode (2) is connected with a grounding rod (4);
The vertical grounding electrodes (3) are arranged, and the two vertical grounding electrodes (3) are respectively connected with two ends of the horizontal grounding electrode (2);
The down lead (41), down lead (41) with earthing rod (4) keep away from the one end of horizontal earthing pole (2) is connected, down lead (41) stretches out ground, down lead (41) stretch out the one end on ground and be connected with connecting plate (5), connecting plate (5) keep away from down lead (41) one end through bolt (6) and case become threaded connection.
2. A repeating ground structure for a tank transformer according to claim 1, characterized in that: ground ditch (11) have been seted up to terrace (1) below, horizontal earthing pole (2) bury in ground ditch (11), perpendicular earthing pole (3) inserts ground ditch (11) ground, backfill soil (12) have been laid to ground ditch (11) top.
3. A repeating ground structure for a tank transformer according to claim 2, characterized in that: the horizontal grounding electrode (2) is pre-buried at a position of 0.8 meter below the terrace (1).
4. A repeating ground structure for a tank transformer according to claim 1, characterized in that: the horizontal grounding electrode (2) is connected with the grounding rod (4) in a welding way, and rust-proof paint is coated at a welding opening.
5. A repeating ground structure for a tank transformer as set forth in claim 4, wherein: the horizontal grounding electrode (2) is connected with the vertical grounding electrode (3) in a welding way, and an antirust paint is coated at a welding opening.
6. A repeating ground structure for a tank transformer according to claim 1, characterized in that: the interface department of downlead (41) with earthing rod (4) is provided with reinforcing angle steel (42), reinforcing angle steel (42) both sides respectively with downlead (41) with earthing rod (4) welded connection.
7. A repeating ground structure applied to a tank transformer as set forth in claim 6, wherein: the horizontal grounding electrode (2) is provided with a reinforcing angle steel (21) at the interface of the vertical grounding electrode (3), and two sides of the reinforcing angle steel (21) are respectively connected with the horizontal grounding electrode (2) and the vertical grounding electrode (3) in a welding mode.
8. A repeating ground structure for a tank transformer according to claim 1, characterized in that: the horizontal grounding electrode (2) is made of round steel with the diameter of 16mm, and the length of the horizontal grounding electrode (2) is 5m.
9. A repeating ground structure for a tank transformer according to claim 1, characterized in that: the down conductor (41) is provided as a round steel with a diameter of 16mm, and the length of the down conductor (41) is 4m.
10. A repeating ground structure for a tank transformer according to claim 1, characterized in that: the vertical grounding electrode (3) is arranged to be angle steel, and the length of the vertical grounding electrode (3) is 2.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322651263.6U CN220857240U (en) | 2023-09-27 | 2023-09-27 | A repeated grounding structure for box-type transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322651263.6U CN220857240U (en) | 2023-09-27 | 2023-09-27 | A repeated grounding structure for box-type transformers |
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| Publication Number | Publication Date |
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| CN220857240U true CN220857240U (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322651263.6U Active CN220857240U (en) | 2023-09-27 | 2023-09-27 | A repeated grounding structure for box-type transformers |
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| CN (1) | CN220857240U (en) |
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2023
- 2023-09-27 CN CN202322651263.6U patent/CN220857240U/en active Active
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Effective date of registration: 20260417 Address after: 062350 Shaozhuang Township Industrial Park, Suning County, Cangzhou City, Hebei Province Patentee after: HEBEI XINDELI ELECTRICAL EQUIPMENT Co.,Ltd. Country or region after: China Address before: 528000 plant 1, tuming "Lu Dong" section, Yanbu Hexi Avenue, Dali Town, Nanhai District, Foshan City, Guangdong Province Patentee before: Guangdong Mingxing Power Engineering Co.,Ltd. Country or region before: China |