CN217720466U - Box transformer substation construction structure capable of reducing grounding resistance - Google Patents
Box transformer substation construction structure capable of reducing grounding resistance Download PDFInfo
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- CN217720466U CN217720466U CN202221790293.4U CN202221790293U CN217720466U CN 217720466 U CN217720466 U CN 217720466U CN 202221790293 U CN202221790293 U CN 202221790293U CN 217720466 U CN217720466 U CN 217720466U
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Abstract
The utility model relates to a box transformer substation construction structure for reducing ground resistance, including box transformer substation and foundation ditch, the bottom of foundation ditch is provided with the bottom plate, and the upper surface at bottom plate edge is provided with the curb plate, and the curb plate encloses into the threading chamber with the bottom plate, and the top of curb plate is higher than ground and pre-buried and is provided with horizontal electrically conductive bracing piece, and box transformer substation installs in the top of curb plate and is connected with electrically conductive bracing piece conductively; a plurality of grounding electrodes are arranged around the foundation pit, and the conductive supporting rod is connected with the grounding electrodes through grounding leads; the bottom plate is provided with a plurality of conductive columns, the conductive columns vertically penetrate through the bottom plate, the upper ends of the conductive columns are electrically connected with the box transformer substation, and the lower ends of the conductive columns are connected with the grounding electrode through the horizontal conductive cross beam. Through set up on the bottom plate of basis and lead electrical pillar to lead electrical pillar and continuous with the earthing pole, reduced ground resistance, can not increase earthing device's area of setting again simultaneously, saved area, reduced construction cost.
Description
Technical Field
The utility model belongs to the technical field of the case becomes the construction, especially, reduce ground resistance's case becomes construction structures.
Background
A temporary electricity utilization project in a certain park needs to newly install an 800KVA box transformer substation, and in order to improve the safety of the box transformer substation, a grounding device needs to be arranged. Traditional case becomes construction structures refers to CN 202120059494.6-northern wind-powered electricity generation field 35KV and following case and becomes the utility model patent of basis, and earthing device is including pre-buried channel-section steel at the basis top, channel-section steel and case become the shell welding to link to each other with the ground connection band steel through the earth connection, the ground connection band steel is many, sets up the underground around the case becomes. Ground resistance must satisfy the designing requirement, can not be too high, and the soil composition is the important factor that influences ground resistance, the soil particle of the construction site of this application is comparatively thick, has more grit in the composition, soil resistance teaches highly, the ground resistance in any season of designing requirement must not be higher than 4 omega, adopt traditional ground connection mode to be difficult to satisfy the requirement, if will reduce ground resistance, then need increase the quantity of earthing pole for earthing device's area increases.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a reduce ground resistance's case becomes construction structures is provided, makes ground resistance satisfy the designing requirement.
In order to solve the above problem, the utility model adopts the technical scheme that: the box transformer substation construction structure capable of reducing the grounding resistance comprises a box transformer substation and a foundation pit, wherein a bottom plate is arranged at the bottom of the foundation pit, a side plate is arranged on the upper surface of the edge of the bottom plate, the side plate and the bottom plate define a threading cavity, the top of the side plate is higher than the ground and is pre-buried with a horizontal conductive support rod, and the box transformer substation is mounted at the top of the side plate and is in conductive connection with the conductive support rod;
a plurality of grounding electrodes are arranged around the foundation pit, and the conductive supporting rod is connected with the grounding electrodes through grounding leads;
the transformer substation is characterized in that a plurality of conductive columns are arranged on the bottom plate, the conductive columns vertically penetrate through the bottom plate, the upper ends of the conductive columns are electrically connected with the transformer substation, and the lower ends of the conductive columns are connected with the grounding electrode through a horizontal conductive cross beam.
Further, the grounding electrode is galvanized angle steel, and the length of the grounding electrode is greater than or equal to 2.5m.
Further, the conductive beam is a galvanized flat steel, and the distance from the conductive beam to the ground is greater than or equal to 0.8m.
Further, the conductive column is galvanized flat steel.
Further, the bottom plate comprises a lower concrete layer and an upper concrete layer, and a asphalt felt asphalt layer is arranged between the lower concrete layer and the upper concrete layer.
Furthermore, the curb plate is the brick wall body, the top of brick wall body is provided with the concrete beam, electrically conductive bracing piece set up in the top of concrete beam.
Furthermore, an organic silicon waterproof layer is arranged on the outer side wall of the brick wall.
Furthermore, a stepped operating platform is arranged on the ground outside the side plates.
Furthermore, the inner side of the side plate is provided with a step ladder.
Further, the upper surface slope of bottom plate sets up, just the lowest department of bottom plate upper surface is provided with the water catch bowl.
The beneficial effects of the utility model are that: through set up on the bottom plate of basis and lead electrical pillar to lead electrical pillar and continuous with the earthing pole, reduced ground resistance, can not increase earthing device's area of setting again simultaneously, saved area, reduced construction cost.
Drawings
Fig. 1 is a schematic front view of the present invention;
fig. 2 is a schematic view of the basic plan of the present invention;
reference numerals are as follows: 1-a bottom plate; 2-side plates; 3-a conductive support bar; 4-the ground; 5-a ground electrode; 6-a ground lead; 7-box transformer substation; 8-a conductive post; 9-a conductive beam; 10-lower concrete layer; 11-an upper concrete layer; 12-asphalt felt layer; 13-a concrete beam; 14-an operating platform; 15-climbing a ladder; 16-water collecting tank.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
The utility model discloses a reduce ground resistance's case becomes construction structures, as shown in fig. 1 and fig. 2, become 7 and foundation ditch including the case, the bottom of foundation ditch is provided with bottom plate 1, and the upper surface at 1 edge of bottom plate is provided with curb plate 2, and curb plate 2 encloses into the threading chamber with bottom plate 1, and the top of curb plate 2 is higher than ground 4 and pre-buried electrically conductive bracing piece 3 that is provided with the horizontally, and case becomes 7 and installs in the top of curb plate 2 and be connected with electrically conductive bracing piece 3 is electrically conductive.
The box transformer substation 7 is an existing 800KVA box transformer substation and is installed on a foundation. The foundation comprises a bottom plate 1 and side plates 2, wherein the bottom plate 1 and the side plates 2 can be both formed by pouring concrete, and the foundation comprises the following preferred embodiments: the bottom plate 1 comprises a lower concrete layer 10 and an upper concrete layer 11, and a felt asphalt layer 12 is arranged between the lower concrete layer 10 and the upper concrete layer 11. The lower concrete layer 10 and the upper concrete layer 11 are formed by pouring C20 concrete, the thickness of each concrete layer is 100mm, the thickness of the asphalt felt asphalt layer 12 is about 50mm, and the asphalt felt asphalt layer has the functions of water resistance and corrosion resistance. The main body of the side plate 2 is a brick wall body which is built by MU10 machine bricks and 100# cement mortar, and the thickness is 380mm. The concrete beam 13 is arranged at the top of the brick wall, and the concrete beam 13 is formed by pouring C20 concrete and used for installing the box transformer substation 7. The outer side wall of the brick wall body is provided with an organic silicon waterproof layer to enhance the waterproof effect. Cement mortar is smeared on the upper surface of the bottom plate 1 and the inner side surface of the side plate 2. In order to facilitate the entry and exit of the cable, an inlet wire through pipe and an outlet wire through pipe are arranged on the side plate 2, and the inlet wire through pipe and the outlet wire through pipe can be steel pipes. The top of the side plate 2 is higher than the ground 4, so that the bottom of the box transformer substation 7 is higher than the ground 4, and rainwater is prevented from splashing into the box transformer substation 7.
A plurality of vertical grounding electrodes 5 are arranged around the foundation pit, and the conductive support rod 3 is connected with the grounding electrodes 5 through grounding leads 6; be provided with a plurality of electrically conductive poles 8 on the bottom plate 1, electrically conductive pole 8 can be 4, and electrically conductive pole 8 vertically runs through bottom plate 1, and electrically conducts 7 electrically conductive connections with the case transformer substation in the upper end of electrically conductive pole 8, and electrically conductive crossbeam 9 and the earthing pole 5 of passing through the horizontally of the lower extreme of electrically conductive pole 8 link to each other.
The grounding electrode 5, the conductive cross beam 9, the conductive column 8 and the like can be made of various steel profiles, preferably, the grounding electrode 5 is galvanized angle steel, and the length of the grounding electrode 5 is greater than or equal to 2.5m. The grounding lead 6 and the conductive beam 9 are galvanized flat steel, and the distance from the conductive beam 9 to the ground 4 is greater than or equal to 0.8m. The conductive posts 8 are also galvanized flat steel.
Two adjacent grounding electrodes 5 are also connected through the conductive beam 9, and the conductive columns 8 are also connected through the conductive beam 9 to form a grounding network. By additionally arranging the conductive column 8 below the box transformer 7, the number of the grounding electrodes 5 is not required to be increased, and the grounding resistance is reduced under the condition of not increasing the floor area of the grounding device, so that the grounding resistance meets the design requirement.
In order to facilitate the installation and the maintenance of the box transformer substation 7, a stepped operating platform 14 is arranged on the ground 4 outside the side plate 2, and the operating platform 14 can be built by MU10 machine bricks and 100# cement mortar or can be formed by pouring concrete.
The inner side of the side plate 2 is provided with a step 15 so that the later-stage maintainers can conveniently go in and out the threading cavity.
The upper surface slope of bottom plate 1 sets up, and the lower of bottom plate 1 upper surface is provided with water catch bowl 16, and water catch bowl 16 can collect the rainwater that gets into the threading chamber etc. prevents that the cable from soaking.
In order to support the cable, a cable support can be arranged on the inner side of the side plate 2, and the cable support is used for supporting the cable during cable laying, so that the cable is kept stable and has enough distance with the bottom plate 1, and the cable is prevented from being soaked. The metal materials in the threading cavity, such as a cable support, an inlet and outlet threading pipe and the like are connected with the conductive post 8 through a grounding wire.
The utility model discloses a work progress does:
and excavating a foundation pit, and leveling and tamping the bottom of the foundation pit.
Adopting C20 concrete to pour a lower concrete layer 10 with the thickness of 100mm at the bottom of the foundation pit, embedding a conductive column 8 in the pouring process, and reserving a water collecting tank 16; then, a 50 mm-thick asphalt layer 12 is paved on the surface of the lower concrete layer 10, an upper concrete layer 11 with the thickness of 100mm is poured on the surface of the asphalt layer 12 by adopting C20 concrete, the surface of the upper concrete layer 11 is downwards inclined towards the water collecting tank 16, and then fine sand is filled in the water collecting tank 16.
A brick wall body is built by adopting MU10 machine bricks and 100# cement mortar, an inlet wire through pipe, an outlet wire through pipe and a grounding lead 6 are embedded in the building process, and the brick wall body is higher than the ground 4. Then cement mortar is smeared on the inner side surface and the outer side surface of the brick wall body and the surface of the upper concrete layer 11, an organic silicon waterproof layer is sprayed on the outer side surface of the brick wall body for two times, and the volume ratio of organic silicon to water is 1 to 9. After the strength of the brick wall body reaches the design requirement, the concrete beam 13 can be poured on the top of the brick wall body, and the conductive support rod 3 is welded at the upper end of the grounding lead 6 before pouring.
Then, the ground electrode 5 is driven into the ground around the foundation, the respective ground electrodes 5 and the conductive posts 8 are connected by the conductive beams 9, as shown in fig. 2, and the lower end of the ground lead 6 is welded to the ground electrode 5. After the grounding device is set, the grounding resistance is detected, and the grounding resistance is ensured to be lower than 4 ohms.
According to actual requirements, an operation platform 14 is cast or built on the ground 4, and a step ladder 15 or a ladder is arranged on the inner side of the side plate 2.
And finally, installing the box transformer substation 7, welding the shell of the box transformer substation 7 with the conductive support rod 3, and connecting the conductive column 8 with the shell at the bottom of the box transformer substation 7 by using galvanized flat iron and the like. The cable is then laid.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The box transformer substation construction structure capable of reducing the grounding resistance comprises a box transformer substation (7) and a foundation pit, wherein a bottom plate (1) is arranged at the bottom of the foundation pit, a side plate (2) is arranged on the upper surface of the edge of the bottom plate (1), the side plate (2) and the bottom plate (1) enclose a threading cavity, the top of the side plate (2) is higher than the ground (4) and is pre-buried with a horizontal conductive support rod (3), and the box transformer substation (7) is mounted at the top of the side plate (2) and is in conductive connection with the conductive support rod (3);
a plurality of grounding electrodes (5) are arranged around the foundation pit, and the conductive support rod (3) is connected with the grounding electrodes (5) through a grounding lead (6);
the method is characterized in that: be provided with a plurality of conductive columns (8) on bottom plate (1), it vertically runs through bottom plate (1) to lead conductive column (8), just the upper end and the case of leading conductive column (8) become (7) electrically conductive connection, the lower extreme that leads conductive column (8) links to each other with earthing pole (5) through horizontally electrically conductive crossbeam (9).
2. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: the grounding electrode (5) is galvanized angle steel, and the length of the grounding electrode (5) is greater than or equal to 2.5m.
3. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: the conductive beam (9) is a galvanized flat steel, and the distance from the conductive beam (9) to the ground (4) is greater than or equal to 0.8m.
4. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: the conductive column (8) is galvanized flat steel.
5. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: the bottom plate (1) comprises a lower concrete layer (10) and an upper concrete layer (11), and a linoleum asphalt layer (12) is arranged between the lower concrete layer (10) and the upper concrete layer (11).
6. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: curb plate (2) are the brick wall body, the top of brick wall body is provided with concrete beam (13), electrically conductive bracing piece (3) set up in the top of concrete beam (13).
7. The box-type substation construction structure for reducing the ground resistance according to claim 6, wherein: and an organic silicon waterproof layer is arranged on the outer side wall of the brick wall.
8. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: a stepped operating platform (14) is arranged on the ground (4) outside the side plate (2).
9. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: the inner side of the side plate (2) is provided with a step ladder (15).
10. The box-type substation construction structure for reducing the ground resistance according to claim 1, characterized in that: the upper surface of the bottom plate (1) is obliquely arranged, and a water collecting tank (16) is arranged at the lowest position of the upper surface of the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790293.4U CN217720466U (en) | 2022-07-12 | 2022-07-12 | Box transformer substation construction structure capable of reducing grounding resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790293.4U CN217720466U (en) | 2022-07-12 | 2022-07-12 | Box transformer substation construction structure capable of reducing grounding resistance |
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| Publication Number | Publication Date |
|---|---|
| CN217720466U true CN217720466U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221790293.4U Active CN217720466U (en) | 2022-07-12 | 2022-07-12 | Box transformer substation construction structure capable of reducing grounding resistance |
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| CN (1) | CN217720466U (en) |
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2022
- 2022-07-12 CN CN202221790293.4U patent/CN217720466U/en active Active
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