CN111180914A - Grounding system of factory building - Google Patents
Grounding system of factory building Download PDFInfo
- Publication number
- CN111180914A CN111180914A CN201910741186.9A CN201910741186A CN111180914A CN 111180914 A CN111180914 A CN 111180914A CN 201910741186 A CN201910741186 A CN 201910741186A CN 111180914 A CN111180914 A CN 111180914A
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- CN
- China
- Prior art keywords
- grounding
- grounding system
- outgoing line
- lightning protection
- functional
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
Abstract
The invention relates to the technical field of grounding systems, and discloses a grounding system of a factory building, which comprises a lightning protection grounding system and a functional grounding system, wherein the lightning protection grounding system comprises a lightning protection net, a first down lead and a first grounding device; the functional grounding system comprises a second down lead and a second grounding device, the second down lead is insulated from the first down lead, and the second grounding device comprises a horizontal grounding net and a vertical grounding rod which are arranged below the building foundation bottom plate; the lightning protection grounding system and the functional grounding system form an equipotential system or respectively carry out grounding resistance detection on the lightning protection grounding system and the functional grounding system. The lightning protection grounding system and the functional grounding system in the plant grounding system are not shared, so that equipotential connection can be realized, and resistance detection can also be realized respectively.
Description
Technical Field
The invention relates to the technical field of grounding systems, in particular to a grounding system for a workshop.
Background
The plant grounding system comprises a lightning protection grounding system and various functional grounding systems, in the prior art, the lightning protection grounding system in the plant grounding system is generally formed by utilizing structural steel bars in a plant building, and a lightning protection net is laid on the roof of the plant building to prevent direct lightning attack; the lightning protection grounding system uses main steel bars in a building peripheral structure column as down leads, uses a steel bar mesh in a building foundation and main steel bars in piles as grounding devices, reserves a grounding plate, and enables the grounding plate and the main steel bars in the building structure column to be welded and communicated with the grounding devices, so that the main steel bars in a foundation beam are electrically communicated, and an equipotential system is formed on a floor of a building; the grounding device is shared by various functional grounding systems (including the protection and working grounding of a medium-voltage power distribution system, the protection and working grounding of a low-voltage power distribution system, the working grounding of electric equipment, the anti-static grounding, the grounding of a weak-current system and the like) and the lightning protection grounding system.
Disclosure of Invention
The invention provides a plant grounding system, wherein a lightning protection grounding system and a functional grounding system in the plant grounding system are not shared, so that equipotential connection can be realized, and resistance can be respectively detected.
In order to achieve the purpose, the invention provides the following technical scheme:
a plant grounding system comprising a lightning protection grounding system and a functional grounding system, wherein:
the lightning protection grounding system comprises a lightning protection net laid on a roof of a factory building, a first down lead arranged in a peripheral structural column of the factory building and connected with the lightning protection net, and a first grounding device connected with the first down lead, wherein the first down lead is a main reinforcing steel bar in the peripheral structural column of the building, and the first grounding device comprises a reinforcing steel bar net in a building foundation and a main reinforcing steel bar in a pile electrically connected with the reinforcing steel bar net;
the functional grounding system comprises a second down lead connected with the grounding box of each functional part and a second grounding device arranged below the building foundation slab, wherein the second down lead is arranged in the building peripheral structural column and the building inner side structural column and is insulated from the first down lead, and the second grounding device comprises a horizontal grounding net arranged below the building foundation slab and a vertical grounding rod connected with the horizontal grounding net;
the lightning protection grounding system and the functional grounding system form an equipotential system when the first outgoing line and the second outgoing line are in a connected state; when the first outgoing line and the second outgoing line are in a disconnected state, ground resistance detection can be respectively carried out on the lightning protection grounding system and the functional grounding system.
In the plant grounding system, a first down lead in the lightning protection grounding system and a second down lead in the functional grounding system are mutually insulated, a first grounding device in the lightning protection grounding system adopts a reinforcing mesh in a building foundation and a main rib in a pile electrically connected with the reinforcing mesh, and a second grounding device in the functional grounding system comprises a horizontal grounding mesh arranged below a building foundation bottom plate and a vertical grounding rod connected with the horizontal grounding mesh, the grounding devices of the lightning protection grounding system and the functional grounding system are not shared, equipotential connection of the lightning protection grounding system and the functional grounding system is realized by arranging a first outgoing line electrically connected with the first down lead and a second outgoing line electrically connected with the horizontal grounding mesh, the first outgoing line and the second outgoing line have two states of connection and disconnection, when the first outgoing line and the second outgoing line are in a connection state, the lightning protection grounding system and the functional grounding system form an equipotential system; when the first outgoing line and the second outgoing line are in a disconnected state, the grounding resistance detection can be respectively carried out on the lightning protection grounding system and the functional grounding system, namely in the plant grounding system in the application, the lightning protection grounding system and the functional grounding system are mutually independent, the equal potential connection of the lightning protection grounding system and the functional grounding system is realized through the electric connection of the first outgoing line and the second outgoing line in the use process, when the grounding resistance detection is required, the grounding resistance detection can be respectively carried out on the lightning protection grounding system and the functional grounding system through the electric connection of the first outgoing line and the second outgoing line, and the lightning protection grounding system and the functional grounding system in the plant grounding system are mutually independent, particularly the first outgoing line in the lightning protection grounding system is mutually insulated from the second outgoing line in the functional grounding system, so that the interference of the lightning current in the lightning protection grounding system to the functional grounding system can be avoided, preventing adverse effects on sensitive electronic equipment connected to the functional grounding system.
Preferably, the grounding detection box is further included, and one end of the first outgoing line, which is used for being connected with the second outgoing line, and one end of the second outgoing line, which is used for being connected with the first outgoing line, are both located in the grounding detection box.
Preferably, the one end that is used for being connected with the second lead-out wire in the first lead-out wire is in with first copper bar welding in the ground connection detection case, be used for in the second lead-out wire with the one end that first lead-out wire is connected is in with second copper bar welding in the ground connection detection case first copper bar is equipped with the via hole of one-to-one with the second copper bar, stretches into through run-over bolted connection spare the via hole in order to incite somebody to action first copper bar is connected with the second copper bar.
Preferably, a gasket is arranged at a position, opposite to the split bolt connecting piece, of the first copper bar and the second copper bar.
Preferably, the number of split bolt connections is two.
Preferably, the horizontal grounding grid is a copper grid formed by a plurality of bare copper wires in a staggered connection mode.
Preferably, the horizontal grounding grid is arranged at a depth of 500mm below the building foundation slab.
Preferably, the vertical ground rod is a copper-clad steel rod or a copper rod.
Preferably, the second down conductor is made of bare copper wire wrapped with plastic tube.
Drawings
Fig. 1 is a schematic structural diagram of a grounding system of a factory building provided in the present invention;
fig. 2 is a schematic view of a connection structure of a first outgoing line and a second outgoing line in the plant grounding system provided by the invention;
fig. 3 is a partially enlarged view of a schematic diagram of a connection structure of a first outgoing line and a second outgoing line in the plant grounding system provided by the invention.
Icon:
1-lightning protection net; 2-a first down conductor; 3-a first grounding device; 31-reinforcing mesh; 32-pile internal main reinforcement; 4-a second down conductor; 5-building structural columns; 6-a second grounding device; 61-horizontal ground net; 62-vertical ground rod; 7-a first outlet; 8-a second outlet; 9-slotting; 10-a ground detection box; 11-a first copper bar; 12-a second copper bar; 13-Split bolt connection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2 and fig. 3, the present invention provides a grounding system for a factory building, which includes a lightning protection grounding system and a functional grounding system, wherein:
the lightning protection grounding system comprises a lightning protection net 1 laid on a roof of a factory building, a first down lead 2 arranged in a peripheral structural column 5 of the factory building and connected with the lightning protection net 1, and a first grounding device 3 connected with the first down lead 2, wherein the first down lead 2 is a main reinforcing steel bar in the peripheral structural column 5 of the building, and the first grounding device 3 comprises a reinforcing steel bar net 31 in a building foundation and a main reinforcing steel bar 32 in a pile electrically connected with the reinforcing steel bar net 31;
the functional grounding system comprises a second down lead 4 connected with the grounding box of each functional part and a second grounding device 6 arranged below the foundation slab of the building, wherein the second down lead 4 is arranged in the peripheral structural column 5 of the building and the structural column inside the building and is insulated from the first down lead 2, and the second grounding device 6 comprises a horizontal grounding net 61 arranged below the foundation slab of the building and a vertical grounding rod 62 connected with the horizontal grounding net 61;
the lightning protection grounding system further comprises a first outgoing line 7 electrically connected with the first down lead 2 and a second outgoing line 8 electrically connected with the horizontal grounding grid 61, the first outgoing line 7 and the second outgoing line 8 are in a connection state and a disconnection state, and when the first outgoing line 7 and the second outgoing line 8 are in the connection state, the lightning protection grounding system and the functional grounding system form an equipotential system; when the first outgoing line 7 and the second outgoing line 8 are in a disconnected state, the grounding resistance detection can be respectively carried out on the lightning protection grounding system and the functional grounding system.
In the plant grounding system, a first down lead 2 in the lightning protection grounding system and a second down lead 4 in the functional grounding system are mutually insulated, a first grounding device 3 in the lightning protection grounding system adopts a reinforcing mesh 31 in a building foundation and a main bar 32 in a pile electrically connected with the reinforcing mesh 31, a second grounding device 6 in the functional grounding system comprises a horizontal grounding mesh 61 arranged under a building foundation bottom plate and a vertical grounding rod 62 connected with the horizontal grounding mesh 61, the grounding devices of the lightning protection grounding system and the functional grounding system are not shared, equipotential connection of the lightning protection grounding system and the functional grounding system is realized by arranging a first outgoing line 7 electrically connected with the first down lead 2 and a second outgoing line 8 electrically connected with the horizontal grounding mesh 61, the first outgoing line 7 and the second outgoing line 8 are in a connection state and a disconnection state, when the first outgoing line 7 and the second outgoing line 8 are in a connection state, the lightning protection grounding system and the functional grounding system form an equipotential system; when the first outgoing line 7 and the second outgoing line 8 are in a disconnected state, the grounding resistance detection can be respectively carried out on the lightning protection grounding system and the functional grounding system, namely in the plant grounding system in the application, the lightning protection grounding system and the functional grounding system are mutually independent, the equipotential connection of the lightning protection grounding system and the functional grounding system is realized through the electric connection of the first outgoing line 7 and the second outgoing line 8 in the use process, when the grounding resistance detection is needed, the grounding resistance detection can be respectively carried out on the lightning protection grounding system and the functional grounding system by disconnecting the electric connection of the first outgoing line 7 and the second outgoing line 8, and as the lightning protection grounding system and the functional grounding system in the plant grounding system are mutually independent, particularly, the first outgoing line 2 in the lightning protection grounding system is mutually insulated from the second outgoing line 4 in the functional grounding system, therefore, interference caused by lightning current in the lightning protection grounding system to the functional grounding system can be avoided, and adverse effects on sensitive electronic equipment connected with the functional grounding system can be prevented.
The functional grounding system in the plant grounding system comprises high-voltage and low-voltage power distribution system protection and working grounding of a power supply and distribution system, process and related equipment protection and working grounding, anti-static grounding, weak-current system grounding and the like, and the grounding boxes at all functional parts comprise equipment grounding boxes, instrument grounding boxes, neutral point grounding boxes, anti-static grounding boxes, weak-current system grounding boxes and the like according to grounding classification. Each function grounding box is respectively connected with different second down leads 4, and various grounding functions cannot be used in a mixed mode.
Specifically, as shown in fig. 2 and 3, the plant grounding system further includes a grounding detection box 10, and both an end of the first outgoing line 7 for connecting with the second outgoing line 8 and an end of the second outgoing line 8 for connecting with the first outgoing line 7 are located in the grounding detection box 10.
Specifically, as shown in fig. 3, one end of the first outgoing line 7, which is used for being connected with the second outgoing line 8, is welded to the first copper bar 11 in the ground detection box 10, one end of the second outgoing line 8, which is used for being connected with the first outgoing line 7, is welded to the second copper bar 12 in the ground detection box 10, the first copper bar 11 and the second copper bar 12 are provided with via holes in a one-to-one correspondence, and the first copper bar 11 and the second copper bar 12 are connected by extending the through holes through the split bolt connecting pieces 13.
One end of the first outgoing line 7 used for being connected with the second outgoing line 8 and one end of the second outgoing line 8 used for being connected with the first outgoing line 7 in the workshop grounding system are both positioned in the grounding detection box 10, the grounding detection box 10 is directly modified by realizing the connection and disconnection of the first outgoing line 7 and the second outgoing line 8 in the grounding detection box 10 without additionally adding other devices or selecting other positions, particularly, the connection and disconnection of the first outgoing line 7 and the second outgoing line 8 can be realized in the grounding detection box 10 through two copper bars and split bolt connecting pieces 13, the first outgoing line 7 and the first copper bar 11 are welded, the second outgoing line 8 and the second copper plate are welded, the first copper bar 11 and the second copper bar 12 are superposed, and the first copper bar 11 and the second copper bar 12 are provided with through holes corresponding to one another, the split bolt connecting piece 13 extends into the via hole to realize the connection of the first outgoing line 7 and the second outgoing line 8, the split bolt connecting piece 13 is pulled out of the via hole or the split bolt connecting piece 13 is unscrewed to enable the first copper bar 11 and the second copper bar 12 not to be in contact, the disconnection of the first outgoing line 7 and the second outgoing line 8 can be realized, and therefore the test of the resistance of the functional grounding system can be carried out.
Specifically, a gasket is arranged at a position, opposite to the split bolt connecting piece 13, of the first copper bar 11 and the second copper bar 12.
The position relative to the split bolt connecting piece 13 in the first copper bar 11 and the second copper bar 12 is provided with a gasket so as to enable the first copper bar 11 to be in better contact with the second copper bar 12 and enable the first outgoing line 7 to be electrically connected with the second outgoing line 8 in a better mode.
Specifically, as shown in fig. 3, the number of split bolt attachments 13 is two.
In one embodiment, two split bolt connectors 13 are used to better fix the first copper bar 11 and the second copper bar 12, so as to prevent the rotation and other movements after the connection, thereby realizing better electrical connection.
Specifically, as shown in fig. 3, the ground detection box 10 is disposed outside the building peripheral structural column 5 provided with the first down lead 2 and located at a position above the ground by about 500mm, so as to conveniently dispose the first outgoing line electrically connected to the first down lead and the second outgoing line electrically connected to the second down lead in the ground detection box, and the ground detection box 10 is disposed outside the building peripheral structural column 5 provided with the first down lead 2, so that the wiring length can be reduced, and the appearance is more beautiful.
Specifically, the horizontal grounding grid 61 is a copper grid formed by a plurality of bare copper wires connected in an interlaced manner.
The horizontal grounding net 61 is positioned in soil below the building bottom plate, corrosion can not be checked, and corrosion resistance can be improved by adopting a copper material.
Specifically, the horizontal ground net 61 is disposed at a depth of 500mm below the floor of the building foundation.
Specifically, as shown in fig. 1, the vertical ground rod 62 is a copper clad steel rod or copper rod.
The vertical ground rod 62 is a copper-clad steel rod or copper rod, the diameter of which can be 25mm, and the length of which can be 2500 mm.
Specifically, the second down conductor 4 is a bare copper wire wrapped with a plastic tube.
When the second downlead 4 and the first downlead 2 are both located the peripheral structure post 5 of building, the main reinforcing bar in the peripheral structure post 5 of building is directly adopted to the first downlead 2, the interference of lightning in the lightning protection grounding system to functional grounding system is avoided in order to avoid with the first downlead 2 to the second downlead 4, and then the interference to electronic equipment, especially sensitive electronic equipment, the mode that the second downlead 4 adopted the bare copper wire of plastic tubing parcel sets up in the peripheral structure post 5 of building, also can adopt the mode of other insulating material parcel conductors.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The utility model provides a factory building ground system which characterized in that, includes lightning protection ground system and functional ground system, wherein:
the lightning protection grounding system comprises a lightning protection net laid on a roof of a factory building, a first down lead arranged in a peripheral structural column of the factory building and connected with the lightning protection net, and a first grounding device connected with the first down lead, wherein the first down lead is a main reinforcing steel bar in the peripheral structural column of the building, and the first grounding device comprises a reinforcing steel bar net in a building foundation and a main reinforcing steel bar in a pile electrically connected with the reinforcing steel bar net;
the functional grounding system comprises a second down lead connected with the grounding box of each functional part and a second grounding device arranged below the building foundation slab, wherein the second down lead is arranged in the building peripheral structural column and the building inner side structural column and is insulated from the first down lead, and the second grounding device comprises a horizontal grounding net arranged below the building foundation slab and a vertical grounding rod connected with the horizontal grounding net;
the lightning protection grounding system and the functional grounding system form an equipotential system when the first outgoing line and the second outgoing line are in a connected state; when the first outgoing line and the second outgoing line are in a disconnected state, ground resistance detection can be respectively carried out on the lightning protection grounding system and the functional grounding system.
2. The plant grounding system of claim 1, further comprising a ground detection box, wherein both an end of the first outlet for connection to a second outlet and an end of the second outlet for connection to the first outlet are located within the ground detection box.
3. The factory building ground system of claim 2, wherein one end of the first outgoing line used for being connected with the second outgoing line is welded with a first copper bar in the ground detection box, one end of the second outgoing line used for being connected with the first outgoing line is welded with a second copper bar in the ground detection box, the first copper bar and the second copper bar are provided with one-to-one corresponding via holes, and the first copper bar and the second copper bar are connected by extending into the via holes through split bolt connecting pieces.
4. The plant grounding system of claim 3, wherein a gasket is disposed in the first copper bar and the second copper bar at a position opposite to the split bolt connection.
5. The plant grounding system of claim 3, wherein the number of split bolt connections is two.
6. The plant grounding system of claim 1, wherein the horizontal grounding grid is a copper grid formed by a plurality of bare copper wires connected in an interlaced manner.
7. The plant grounding system of claim 1, wherein the horizontal grounding grid is disposed at a depth of 500mm below the building foundation floor.
8. The plant grounding system of claim 1, wherein the vertical ground rod is a copper clad steel rod or copper rod.
9. The plant grounding system of claim 1, wherein the second down conductor is a bare copper wire wrapped with plastic tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910741186.9A CN111180914A (en) | 2019-08-12 | 2019-08-12 | Grounding system of factory building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910741186.9A CN111180914A (en) | 2019-08-12 | 2019-08-12 | Grounding system of factory building |
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| Publication Number | Publication Date |
|---|---|
| CN111180914A true CN111180914A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910741186.9A Pending CN111180914A (en) | 2019-08-12 | 2019-08-12 | Grounding system of factory building |
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| CN (1) | CN111180914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054507A (en) * | 2021-03-15 | 2021-06-29 | 合肥中科离子医学技术装备有限公司 | Grounding method for preventing interference of medium-high frequency equipment |
-
2019
- 2019-08-12 CN CN201910741186.9A patent/CN111180914A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054507A (en) * | 2021-03-15 | 2021-06-29 | 合肥中科离子医学技术装备有限公司 | Grounding method for preventing interference of medium-high frequency equipment |
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