CN217334423U - Grounding grid device - Google Patents
Grounding grid device Download PDFInfo
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- CN217334423U CN217334423U CN202220705707.2U CN202220705707U CN217334423U CN 217334423 U CN217334423 U CN 217334423U CN 202220705707 U CN202220705707 U CN 202220705707U CN 217334423 U CN217334423 U CN 217334423U
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Abstract
The utility model relates to the technical field of electrical engineering is built in a house, a grounding grid device is disclosed, through setting up horizontal grounding electrode and vertical grounding electrode, vertical grounding electrode vertically buries in the well drilling, horizontal grounding electrode and vertical grounding electrode carry out equipotential connection and welded connection, guarantee the operation of grounding device safety and stability; the well drilling is internally provided with a pile casing, a support frame is arranged between the vertical grounding electrode and the pile casing, the distance between the vertical grounding electrode and the pile casing is controlled through the support frame, so that the resistance reducing agent is uniformly wrapped on the surface of the galvanized steel pipe, the resistance reducing efficiency of the vertical grounding electrode is fully exerted, a better resistance reducing effect is achieved, technical and economic indexes are optimized, and the construction difficulty is reduced. The utility model discloses simple structure falls and hinders effectually to applicable in the construction project of conditions such as high resistance, big equipment, small area.
Description
Technical Field
The utility model relates to an electrical engineering technical field is built in the room, especially relates to a grounding grid device.
Background
In 2017, in the summer hills high-new tumor hospital, the first large medical device in summer hills, namely a medical electronic linear accelerator (XHA600 series) (hereinafter referred to as linear accelerator) is built. The device has high value, high precision and high comprehensive grounding requirement. According to the related art requirement standard, wherein the safe grounding requirement: the hospital should provide an independent grounding system for the accelerator, and require to configure a fixed protection grounding system which is directly and well connected with the ground and isolated from the neutral line of the power grid, and lead the grounding wire to the base of the accelerator and then connect, and the grounding resistance of the grounding system is not more than 0.4 omega.
Because the construction site is narrow and cannot adopt a conventional method to set an independent grounding system, the average soil resistivity of the equipment and the installation site is as high as more than 1300 omega, m, and the comprehensive grounding resistance cannot be reduced to the standard requirement of not more than 0.4 omega specified by the national mandatory standard and the design reference guide rule of the medical linear accelerator.
For example, the resistance reduction method is difficult to be specified/recommended according to the standard such as increasing the ground grid area, infinitely increasing the grounding body, replacing low-resistivity soil, pouring resistance reducing agent and the like, and cannot be implemented at all. The reason is that: the usable preparation grounding grid's of hospital area is limited, can utilize the greenery patches area little, and mostly synthesizes building construction accumulational building in earlier stage under the greenery patches shallow layer and pile up the building rubbish, clears away the building rubbish and replaces clay and will increase the cost and drop into also. If the floor space of public service road facilities in a hospital field is considered as the construction of a grounding network, the constructed public road traffic facilities in the hospital are destroyed in a large area, so that the expense investment of breaking and repairing the infrastructure is further increased, the construction period is long, and the development of medical care works such as hospital medical care and emergency can be directly influenced in the construction period.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide an area is little, fall and hinder effectual grounding grid device.
The utility model provides a technical scheme that its technical problem adopted is: the grounding grid device is buried underground and comprises a horizontal grounding electrode and a vertical grounding electrode which is perpendicular to the horizontal grounding electrode, wherein the horizontal grounding electrode is positioned at the top of the vertical grounding electrode, and the horizontal grounding electrode is equipotentially connected with the vertical grounding electrode and is welded with the vertical grounding electrode; the vertical grounding electrode is vertically arranged in the drilling well; the vertical grounding electrode comprises a galvanized steel pipe, through holes are formed in the side wall of the galvanized steel pipe at intervals along the axial direction of the galvanized steel pipe, and resistance reducing agents are filled in the galvanized steel pipe and the drilling well; and a support frame is fixedly arranged on the periphery of the vertical grounding electrode.
Further, the method comprises the following steps: the protective cylinder is arranged in the drilling well, is coaxially arranged with the vertical grounding electrode and is attached to the wall of the drilling well, and holes are formed in the side wall of the protective cylinder at intervals along the axial direction of the protective cylinder; the support frame butt protects a lateral wall setting.
Further, the method comprises the following steps: the support frame includes a plurality of landing legs, the landing leg interval evenly sets up at perpendicular earth electrode periphery wall.
Further, the method comprises the following steps: the vertical grounding electrode comprises a plurality of galvanized steel pipes, and the galvanized steel pipes are connected by adopting galvanized flat steel in a welding manner.
Further, the method comprises the following steps: the grounding device further comprises a grounding lead connected with the grounding grid device, and an insulating heat-shrinkable tape wraps the grounding lead.
Further, the method comprises the following steps: and a protective layer is coated outside the insulating thermal shrinkage tape.
The utility model has the advantages that: the horizontal grounding electrode and the vertical grounding electrode are arranged, the vertical grounding electrode is vertically buried in the drilling well, and the horizontal grounding electrode and the vertical grounding electrode are connected in an equipotential manner and are welded, so that the safe and stable operation of grounding equipment is ensured; the well drilling is internally provided with a protective cylinder, a support frame is arranged between the vertical grounding electrode and the protective cylinder, and the distance between the vertical grounding electrode and the protective cylinder is controlled by the support frame, so that the resistance reducing agent is uniformly wrapped on the surface of the galvanized steel pipe, the resistance reducing efficiency of the vertical grounding electrode is fully exerted, a better resistance reducing effect is achieved, technical and economic indexes are optimized, and the construction difficulty is reduced. The utility model discloses simple structure falls and hinders effectually to applicable in the construction project of conditions such as high resistance, big equipment, small area.
Drawings
Fig. 1 is a schematic structural view of a grounding grid device according to the present invention;
fig. 2 is a schematic view of the structure of the vertical grounding electrode of the present invention;
labeled as: 1 horizontal earth electrode, 2 vertical earth electrodes, 3 protect a section of thick bamboo, 4 support frames.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1 and fig. 2, the grounding grid device of the present invention is buried underground, and includes a horizontal grounding electrode 1 and a vertical grounding electrode 2 perpendicular to the horizontal grounding electrode 1, the horizontal grounding electrode 1 is located on top of the vertical grounding electrode 2, and the horizontal grounding electrode 1 is connected with the vertical grounding electrode 2 in an equipotential manner and welded; the vertical grounding electrode 2 is vertically arranged in the well, the vertical grounding electrode 2 comprises a galvanized steel pipe, and resistance reducing agents are filled in the galvanized steel pipe and the well; the galvanized steel pipe side wall is uniformly provided with through holes at intervals along the axial direction, the through holes can be in an inclined opening form, and the purpose is mainly to continuously discharge air in a drilling well and a pipe when the resistance reducing agent is filled, so that the resistance reducing agent is in a fully filled state, and the resistance reducing effect is improved; in order to reduce the erosion of the vertical grounding electrode 2 caused by the natural environment and slow down the loss of the resistance reducing agent along with the quicksand, a pile casing 3 is also arranged in the well, the pile casing 3 and the vertical grounding electrode 2 are coaxially arranged and are attached to the wall of a drilling hole, holes are uniformly formed in the side wall of the pile casing 3 at intervals, the resistance reducing agent is enabled to be in contact with the soil, and meanwhile, the pile casing 3 also improves the stability of the drilling hole; the periphery of the vertical grounding electrode 2 is also fixedly provided with a support frame 4, and the support frame 4 is abutted against the inner side wall of the protective cylinder 3; the support frame 4 is arranged to control the distance between the vertical grounding electrode 2 and the protective cylinder 3, so that the resistance reducing agent is uniformly coated on the surface of the galvanized steel pipe, the resistance reducing efficiency of the vertical grounding electrode is fully exerted, a better resistance reducing effect is achieved, and the resistance reducing efficiency of the vertical grounding electrode 2 is fully exerted. In addition, when the steel pipe is installed in a well, the condition in the well is not easy to observe, each section of the vertical grounding electrode 2 cannot be confirmed to keep the same distance with the pore channel, the installation efficiency and the installation precision can be greatly improved through the support frames 4, preferably, the support frames 4 can be arranged at the top, the middle and the bottom of each section of the galvanized steel pipe, and the number of the support frames 4 is determined according to the length of each section of the galvanized steel pipe.
In consideration of economy, resistance reduction effect and the like, the vertical grounding electrode 2 is made of galvanized steel pipes, the horizontal grounding electrode 1 is made of galvanized flat steel, the galvanized flat steel and the galvanized flat steel are connected in an equipotential manner and fixedly connected in a welding manner, in the embodiment, the periphery of the galvanized flat steel in the horizontal grounding electrode 1 is also provided with a resistance reduction agent, and the resistance reduction agent is laid on the grounding electrode, so that the contact area with soil is enlarged, and the capacity of discharging current is improved; the equipotential connection is a part of lightning protection measures, and the horizontal grounding electrode 1 and the vertical grounding electrode 2 form an equipotential connection network, so that direct lightning strike, lightning induction or other forms of lightning can be prevented, and fire, explosion, life danger and equipment damage are avoided.
Specifically, the support frame 4 comprises a plurality of support legs which are uniformly arranged on the outer peripheral wall of the vertical grounding electrode 2 at intervals; the number of the supporting legs is determined according to the drilling and the structural strength, and the purpose of supporting the galvanized steel pipe can be achieved; preferably, in this embodiment, the support frame 4 is provided with four supporting legs, the outline of the front view of each supporting leg is a right triangle, and the right-angle sides of the supporting legs are connected with the vertical grounding electrode 2 in a welding manner, so that the support frame 4 has higher stability.
Specifically, perpendicular earthing pole 2 includes many galvanized steel pipes, adopts galvanized flat steel welded connection between the galvanized steel pipe, and at the junction, the galvanized flat steel setting is at two galvanized steel pipe tip that wait to connect, and is preferred, in order to improve joint strength, during the connection, adopts many galvanized flat steel to arrange along galvanized steel pipe circumference, then every galvanized flat steel respectively with two galvanized steel pipe welded connection that wait to connect.
Specifically, still include the ground connection lead wire of being connected with the ground net device, for improving ground connection lead wire's life, the parcel has insulating pyrocondensation area on the ground connection lead wire, plays withstand voltage, fire-retardant effect to the ground connection lead wire. More specifically, the insulating heat-shrinkable band is coated with a protective layer, which may be a sleeve made of an anticorrosive material.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 (6)
1. Earthing net device, its characterized in that: the grounding grid is buried underground and comprises a horizontal grounding electrode (1) and a vertical grounding electrode (2) which is perpendicular to the horizontal grounding electrode (1), the horizontal grounding electrode (1) is positioned at the top of the vertical grounding electrode (2), and the horizontal grounding electrode (1) is connected with the vertical grounding electrode (2) in an equipotential manner and is welded; the vertical grounding electrode (2) is vertically arranged in the drilling well; the vertical grounding electrode (2) comprises a galvanized steel pipe, through holes are formed in the side wall of the galvanized steel pipe at intervals along the axial direction of the galvanized steel pipe, and resistance reducing agents are filled in the galvanized steel pipe and the drilling well; and a support frame (4) is fixedly arranged on the periphery of the vertical grounding electrode (2).
2. The grounding grid assembly of claim 1, wherein: a protective cylinder (3) is further arranged in the drilling well, the protective cylinder (3) is coaxially arranged with the vertical grounding electrode (2) and is attached to the wall of the drilling well, and holes are formed in the side wall of the protective cylinder (3) at intervals along the axial direction of the protective cylinder; the support frame (4) is abutted to the inner side wall of the protective cylinder (3).
3. The grounding grid assembly of claim 1, wherein: the support frame (4) comprises a plurality of support legs, and the support legs are evenly arranged on the outer peripheral wall of the vertical grounding electrode (2) at intervals.
4. The grounding grid assembly of claim 1, wherein: the vertical grounding electrode (2) comprises a plurality of galvanized steel pipes which are connected by galvanized flat steel in a welding way.
5. The grounded screen apparatus of claim 1, wherein: the grounding device further comprises a grounding lead connected with the grounding grid device, and an insulating heat-shrinkable tape wraps the grounding lead.
6. A grounding grid arrangement as claimed in claim 5, wherein: and a protective layer is coated outside the insulating thermal shrinkage belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220705707.2U CN217334423U (en) | 2022-03-29 | 2022-03-29 | Grounding grid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220705707.2U CN217334423U (en) | 2022-03-29 | 2022-03-29 | Grounding grid device |
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| Publication Number | Publication Date |
|---|---|
| CN217334423U true CN217334423U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220705707.2U Active CN217334423U (en) | 2022-03-29 | 2022-03-29 | Grounding grid device |
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| CN (1) | CN217334423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411652A (en) * | 2022-10-31 | 2022-11-29 | 中国电建集团山东电力建设第一工程有限公司 | Umbrella-shaped grounding device of extra-high voltage transformer substation, auxiliary unfolding device and using method |
-
2022
- 2022-03-29 CN CN202220705707.2U patent/CN217334423U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411652A (en) * | 2022-10-31 | 2022-11-29 | 中国电建集团山东电力建设第一工程有限公司 | Umbrella-shaped grounding device of extra-high voltage transformer substation, auxiliary unfolding device and using method |
| CN115411652B (en) * | 2022-10-31 | 2023-01-06 | 中国电建集团山东电力建设第一工程有限公司 | Umbrella-shaped grounding device of extra-high voltage transformer substation, auxiliary unfolding device and using method |
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