CN109149156A - A kind of expansible concrete ground grid design method - Google Patents
A kind of expansible concrete ground grid design method Download PDFInfo
- Publication number
- CN109149156A CN109149156A CN201810956495.3A CN201810956495A CN109149156A CN 109149156 A CN109149156 A CN 109149156A CN 201810956495 A CN201810956495 A CN 201810956495A CN 109149156 A CN109149156 A CN 109149156A
- Authority
- CN
- China
- Prior art keywords
- concrete
- grounded screen
- modular
- prefabricated
- concrete modular
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention discloses a kind of expansible concrete ground grid design methods, grounding net of transformer substation is spliced by multiple precast concrete forms, grounded screen is embedded in by each precast concrete form when pouring, template edge is overlapped using step busbar, grounded screen includes horizontal grounding net and is pierced by the earthing pole of concrete blinding vertically downward, and each concrete blinding splicing placement realizes grounded screen construction after stablizing is completed.Beneficial effect is: the design method optimizes ground connection web frame, and suitable for the security performance requirement of the geological conditions such as weak soil, frozen soil, the construction period is short, enhances the protective of grounded screen, guarantees grounding apparatus operational safety.
Description
Technical field
The present invention relates to grounded screen fields, and in particular to a kind of expansible concrete ground grid design method.
Background technique
Grounding net of transformer substation must satisfy ground resistance, the step voltage of safety and contact potential requirement, to meet power transformation
The personal safety of staff and the safe operation of each electrical equipment in standing.On the ground that frozen ground regions freezing season is formed
The influence of table frozen soil layer and wet season underground water for soil body environment seriously affects the security performance of earth mat, leads
Cause the decline of earth mat security performance.
The system of laying of grounded screen, which generallys use, at present is embedded in grounded screen under soil layer, and horizontal earth mat is laid in soil
In layer, around grounded screen and short vertical grounding electrode is arranged in inner ground pole crosspoint, and length is goed deep under soil layer.These laying sides
Formula has certain applicability, but the problems such as the area of soil property environment difference will increase a large amount of construction work amount, and construction efficiency is low.
Summary of the invention
The object of the invention is that providing a kind of expansible concrete ground grid design side to solve the above-mentioned problems
Method, to solve, grounding net of transformer substation construction efficiency is low in the prior art, is not suitable for the technical issues of features as poor geologic condition.
To achieve the above object, the present invention provides following technical schemes:
The present invention provides a kind of expansible concrete ground grid design method, it is characterised in that: grounded screen is by multiple sliceable
Prefabricated concrete modular forms, and the horizontal grounding that several lateral conducting wires and longitudinal conducting wire connect into is provided in concrete modular
Web frame is vertically provided with earthing pole perpendicular to horizontal grounding net in the crosspoint of lateral conducting wire and longitudinal conducting wire, and earthing pole hangs down
It is directly pierced by the lower surface of concrete modular downwards；
The surrounding of concrete modular is provided with step bus structures, for the conduction overlap joint of each concrete modular, confluence
Exposed and ledge surface is arranged, and is electrically connected with the lateral conducting wire of horizontal grounding net and longitudinal conducting wire, concrete modular surface is uniform
Be provided with through-hole, through-hole with horizontally connect net or busbar connector is connected to, the top of step stitching portion is provided with transverse link and is used for
The position of fixed mutually splicing concrete modular, transverse link both ends are fixed by caulking to two prefabricated concrete modulars respectively
On；
Prefabricated concrete grounded screen casting method:
1) prefabricated concrete blinding is made, the top in template ties up reinforcing bar and does supporting, and the middle and lower part in template weaves horizontal
Grounded screen and earthing pole, earthing pole are pierced by downwards template；
2) be stirred material with cement plaster blender, pour into concrete blinding, be spaced in the mixture in template centainly away from
From insertion reserved through hole mold, pressure plare is covered；
3) after standing a period of time, concrete blinding edge is cut by stepped using abrasive wheel cutting machine, at this time horizontal grounding
Net is exposed at step, and busbar connector is fixed at step and is electrically connected with horizontal grounding net；
4) prefabricated concrete modular is demoulded, measures resistivity, bending resistance, shearing strength, dispatches from the factory after qualified；
After prefabricated concrete modular completes, site operation is carried out, substation field construction procedure is as follows:
1) according to overall grounded screen size excavation pit；
2) prefabricated concrete modular is lifted by crane with lifting equipment, is embedded in foundation pit, at this point, earthing pole is inserted in soil mass of foundation pit
In；
3) splice at multiple concrete modular steps, the busbar connector between disparate modules is in contact, and splicing step seam crossing is using envelope
Layer oil seal；
4) concrete modular step stitching portion rivets fixed lateral connecting rod；
5) the reserved through hole mold in concrete modular is extracted, the ground connection installation and detection test of relevant device are carried out, for not
It is sealed and is made marks using concrete perfusion with through-hole；
6) concrete modular fills the soil body with margin of foundation pit position and is compacted.
Further, in the step 2) of prefabricated concrete grounded screen casting method, edge step position should be reserved by tying up reinforcing bar
It sets and lead to the hole site.
Further, settable multiple-layer horizontal grounded screen in prefabricated concrete modular, correspondingly, prefabricated concrete modular
Multilayer steps position is arranged in edge, and the busbar connector of every layer of stepped locations is in electrical contact with this layer of horizontal grounding net.
Further, in the step 2) of prefabricated concrete grounded screen casting method, the proportion of mixture uses cement
20%, iron ore 15%, graphite 25%, cobble 25%, water 15%.
Further, busbar connector edge is welded and fixed with horizontal grounding net connect.
Beneficial effect is:
1) precast concrete module improves the resistance of bearing capacity and external environment to grounded screen, and is suitable for differently
Matter condition；
2) prefabricated concrete modular uses step bus structures, facilitates the electrical connection of intermodule, improves site operation effect
Rate；
3) according to practical grounded screen needs, multiple-layer horizontal grounded screen and multilayer steps confluence can be used in prefabricated concrete modular
Structure is arranged, the applicability of grounded screen is improved；
4) precast concrete module can further improve ground connection according to the through-hole of the reserved connection electrical equipment of construction of transformer substation figure
The assembly efficiency and applicability of net measure analysis convenient for the failure to grounded screen.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that prefabricated concrete grounded screen pours flow chart；
Fig. 2 is substation field grounded screen construction process figure；
Fig. 3 is precast concrete module diagram；
Fig. 4 is precast concrete module stitching portion enlarged diagram；
The reference numerals are as follows:
1, precast concrete module；2, horizontal grounding net；3, earthing pole；4, busbar connector；5, transverse link.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
The present invention provides a kind of expansible concrete ground grid design method, it is characterised in that: grounded screen is spelled by multiple
The prefabricated concrete modular connect forms, and the level that several lateral conducting wires and longitudinal conducting wire connect into is provided in concrete modular
It is grounded web frame, earthing pole is vertically provided with perpendicular to horizontal grounding net in the crosspoint of lateral conducting wire and longitudinal conducting wire, is grounded
Pole is pierced by the lower surface of concrete modular vertically downward；
The surrounding of concrete modular is provided with step bus structures, for the conduction overlap joint of each concrete modular, confluence
Exposed and ledge surface is arranged, and is electrically connected with the lateral conducting wire of horizontal grounding net and longitudinal conducting wire, concrete modular surface is uniform
Be provided with through-hole, through-hole with horizontally connect net or busbar connector is connected to, the top of step stitching portion is provided with transverse link and is used for
The position of fixed mutually splicing concrete modular, transverse link both ends are fixed by caulking to two prefabricated concrete modulars respectively
On, guarantee that intermodule does not generate relative displacement, guarantees the reliable electric contact of busbar connector；
Prefabricated concrete grounded screen casting method:
1) prefabricated concrete blinding is made, the top in template ties up reinforcing bar and does supporting, and the middle and lower part in template weaves horizontal
Grounded screen and earthing pole, earthing pole are pierced by downwards template；
2) be stirred material with cement plaster blender, pour into concrete blinding, be spaced in the mixture in template centainly away from
From insertion reserved through hole mold, pressure plare is covered；
3) after standing a period of time, concrete blinding edge is cut by stepped using abrasive wheel cutting machine, at this time horizontal grounding
Net is exposed at step, and busbar connector is fixed at step and is electrically connected with horizontal grounding net；
4) prefabricated concrete modular is demoulded, measures resistivity, bending resistance, shearing strength, dispatches from the factory after qualified；
After prefabricated concrete modular completes, site operation is carried out, substation field construction procedure is as follows:
1) according to overall grounded screen size excavation pit；
2) prefabricated concrete modular is lifted by crane with lifting equipment, is embedded in foundation pit, at this point, earthing pole is inserted in soil mass of foundation pit
In；
3) splice at multiple concrete modular steps, the busbar connector between disparate modules is in contact, and splicing step seam crossing is using envelope
Layer oil seal；
4) concrete modular step stitching portion rivets fixed lateral connecting rod；
5) the reserved through hole mold in concrete modular is extracted, the ground connection installation and detection test of relevant device are carried out, for not
It is sealed and is made marks using concrete perfusion with through-hole；
6) concrete modular fills the soil body with margin of foundation pit position and is compacted.
Further, in the step 2) of prefabricated concrete grounded screen casting method, edge step position should be reserved by tying up reinforcing bar
It sets and lead to the hole site.
Further, settable multiple-layer horizontal grounded screen in prefabricated concrete modular, correspondingly, prefabricated concrete modular
Multilayer steps position is arranged in edge, and the busbar connector of every layer of stepped locations is in electrical contact with this layer of horizontal grounding net, realizes grounded screen
Scalability.
Further, in the step 2) of prefabricated concrete grounded screen casting method, the proportion of mixture uses cement
20%, iron ore 15%, graphite 25%, cobble 25%, water 15% are matched using this kind, further increase the resistivity and branch of grounded screen
Support intensity.
Further, busbar connector edge is welded and fixed with horizontal grounding net connect, and guarantees that intermodule is reliably electrically connected.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (5)
1. a kind of expansible concrete ground grid design method, it is characterised in that: grounded screen is mixed by multiple sliceable prefabricateds
Solidifying clay model block forms, and the horizontal grounding web frame that several lateral conducting wires and longitudinal conducting wire connect into is provided in concrete modular,
It is vertically provided with earthing pole perpendicular to horizontal grounding net in the crosspoint of lateral conducting wire and longitudinal conducting wire, earthing pole is worn vertically downward
The lower surface of concrete modular out；
The surrounding of concrete modular is provided with step bus structures, for the conduction overlap joint of each concrete modular, confluence
Exposed and ledge surface is arranged, and is electrically connected with the lateral conducting wire of horizontal grounding net and longitudinal conducting wire, concrete modular surface is uniform
Be provided with through-hole, through-hole with horizontally connect net or busbar connector is connected to, the top of step stitching portion is provided with transverse link, laterally
Connecting rod two end is fixed by caulking to respectively on two prefabricated concrete modulars；
Prefabricated concrete grounded screen casting method:
1) prefabricated concrete blinding is made, the top in template ties up reinforcing bar and does supporting, and the middle and lower part in template weaves horizontal
Grounded screen and earthing pole, earthing pole are pierced by downwards template；
2) be stirred material with cement plaster blender, pour into concrete blinding, be spaced in the mixture in template centainly away from
From insertion reserved through hole mold, pressure plare is covered；
3) after standing a period of time, concrete blinding edge is cut by stepped using abrasive wheel cutting machine, at this time horizontal grounding
Net is exposed at step, and busbar connector is fixed at step and is electrically connected with horizontal grounding net；
4) prefabricated concrete modular is demoulded, measures resistivity, bending resistance, shearing strength, dispatches from the factory after qualified；
After prefabricated concrete modular completes, site operation is carried out, substation field construction procedure is as follows:
1) according to overall grounded screen size excavation pit；
2) prefabricated concrete modular is lifted by crane with lifting equipment, is embedded in foundation pit, at this point, earthing pole is inserted in soil mass of foundation pit
In；
3) splice at multiple concrete modular steps, the busbar connector between disparate modules is in contact, and splicing step seam crossing is using envelope
Layer oil seal；
4) concrete modular step stitching portion rivets fixed lateral connecting rod；
5) the reserved through hole mold in concrete modular is extracted, the ground connection installation and detection test of relevant device are carried out, for not
It is sealed and is made marks using concrete perfusion with through-hole；
6) concrete modular fills the soil body with margin of foundation pit position and is compacted.
2. a kind of expansible concrete ground grid design method according to claim 1, it is characterised in that: mixed in prefabricated
In the step 2) of solidifying soil grounded screen casting method, edge step position and lead to the hole site should be reserved by tying up reinforcing bar.
3. a kind of expansible concrete ground grid design method according to claim 1, it is characterised in that: prefabricated coagulation
Settable multiple-layer horizontal grounded screen in clay model block, correspondingly, prefabricated concrete mould block edge setting multilayer steps position, every layer
The busbar connector of stepped locations is in electrical contact with this layer of horizontal grounding net.
4. a kind of expansible concrete ground grid design method according to claim 1, it is characterised in that: mixed in prefabricated
In the step 2) of solidifying soil grounded screen casting method, the proportion of mixture uses cement 20%, iron ore 15%, graphite 25%, cobble
25%, water 15%.
5. a kind of expansible concrete ground grid design method according to claim 1, it is characterised in that: busbar connector edge
It is welded and fixed and connect with horizontal grounding net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956495.3A CN109149156B (en) | 2018-08-21 | 2018-08-21 | Design method of expandable concrete grounding network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810956495.3A CN109149156B (en) | 2018-08-21 | 2018-08-21 | Design method of expandable concrete grounding network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109149156A true CN109149156A (en) | 2019-01-04 |
| CN109149156B CN109149156B (en) | 2020-02-18 |
Family
ID=64790871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810956495.3A Expired - Fee Related CN109149156B (en) | 2018-08-21 | 2018-08-21 | Design method of expandable concrete grounding network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109149156B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202759030U (en) * | 2012-08-02 | 2013-02-27 | 博爱县电业公司 | Electric power grounding grid |
| CN103594826A (en) * | 2013-11-12 | 2014-02-19 | 国家电网公司 | Conductive concrete module grounding grid |
| CN105390829A (en) * | 2015-12-16 | 2016-03-09 | 北京先研科技有限责任公司 | Artificial earthing device and artificial earthing network made of artificial earthing device |
| CN105514750A (en) * | 2015-11-19 | 2016-04-20 | 国家电网公司 | Power transmission line grounding construction method |
| CN105914488A (en) * | 2016-06-03 | 2016-08-31 | 北京先研科技有限责任公司 | Efficient discharge grounding module |
-
2018
- 2018-08-21 CN CN201810956495.3A patent/CN109149156B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202759030U (en) * | 2012-08-02 | 2013-02-27 | 博爱县电业公司 | Electric power grounding grid |
| CN103594826A (en) * | 2013-11-12 | 2014-02-19 | 国家电网公司 | Conductive concrete module grounding grid |
| CN105514750A (en) * | 2015-11-19 | 2016-04-20 | 国家电网公司 | Power transmission line grounding construction method |
| CN105390829A (en) * | 2015-12-16 | 2016-03-09 | 北京先研科技有限责任公司 | Artificial earthing device and artificial earthing network made of artificial earthing device |
| CN105914488A (en) * | 2016-06-03 | 2016-08-31 | 北京先研科技有限责任公司 | Efficient discharge grounding module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109149156B (en) | 2020-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104577364B (en) | Small-resistance-value grounding grid of large device and design construction method | |
| CN106495607B (en) | A kind of conducting concrete and preparation method thereof and application | |
| CN201498612U (en) | Earthing device for reducing earth resistance of power transmission line by utilizing tower foundation | |
| CN106120831B (en) | A kind of building automation drainage system and construction method | |
| CN104993440B (en) | Utilize the lightning protection artificial earthing system and construction method of the external downlead of structure reinforcing bars | |
| CN110444919B (en) | Permanent pre-buried grounding body of urban distribution network and construction method thereof | |
| CN210443992U (en) | Novel cable trench | |
| CN205975650U (en) | Building automation drainage system | |
| CN105839613A (en) | Fast curing system used for dredger fill of offshore reclamation and operation method of fast curing system | |
| CN109149156A (en) | A kind of expansible concrete ground grid design method | |
| CN103779824B (en) | Photovoltaic solar building lightning protection facility construction method | |
| CN109193186A (en) | A kind of prefabricated concrete ground grid design method | |
| CN106759268A (en) | Deep layer subway station enclosed structure seepage channel device and method | |
| CN202866322U (en) | Underground upper cover property complex grounding system | |
| CN109066112A (en) | Reduce the earthing or grounding means and method of ground resistance and anti-artificial destruction high voltage iron tower | |
| CN207217803U (en) | Complete web-like no-welding low-voltage ground device | |
| CN105261846A (en) | Tower lightning protection and grounding device | |
| CN111794251B (en) | Expansive soil slope shallow layer reinforcement and service state monitoring and early warning integrated structure system | |
| CN214313559U (en) | Seabed grounding grid for coastal power plant | |
| CN205016693U (en) | Pole -tower lightning protection grounding device | |
| CN209040103U (en) | A kind of hollow sheet pile wall of assembled abnormity | |
| CN204375987U (en) | The little resistance ground network of main equipment | |
| CN208874243U (en) | A kind of pipe gallery lightning arrester | |
| CN208336533U (en) | The high voltage iron tower earthing or grounding means of anti-artificial destruction | |
| CN207852954U (en) | A kind of building lightning protection component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200117 Address after: 061000 No. 8 Beihuan West Road, Cangzhou Canal District, Hebei Province Applicant after: Cangzhou Tongxing Electric Power Design Co.,Ltd. Address before: Jiaxing City, Zhejiang province 314033 District of Xiuzhou Dade Road No. 999 Applicant before: Qiu Jianfang |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 Termination date: 20210821 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |