CN106785512A - Graphite compound resistance reduction cylinder and its construction method are vertically grounded for electric power grounding grid - Google Patents
Graphite compound resistance reduction cylinder and its construction method are vertically grounded for electric power grounding grid Download PDFInfo
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- CN106785512A CN106785512A CN201710073929.0A CN201710073929A CN106785512A CN 106785512 A CN106785512 A CN 106785512A CN 201710073929 A CN201710073929 A CN 201710073929A CN 106785512 A CN106785512 A CN 106785512A
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- graphite
- resistance reduction
- reduction cylinder
- compound resistance
- grounding
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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
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- Elimination Of Static Electricity (AREA)
Abstract
Graphite compound resistance reduction cylinder is vertically grounded for electric power grounding grid the invention discloses a kind of, including：Grounding Grids；The graphite compound resistance reduction cylinder of Grounding Grids periphery is arranged on, wherein：Graphite compound resistance reduction cylinder is shaped by least one shaping ring, and the opposite end of graphite compound resistance reduction cylinder is fastened on Grounding Grids by anti-corrosion connecting line.The invention also discloses a kind of construction method that graphite compound resistance reduction cylinder is vertically grounded for electric power grounding grid.Implement one kind of the invention and be vertically grounded graphite compound resistance reduction cylinder and its construction method for electric power grounding grid, resistance-reducing efficiency can be improved, solve the long-lasting difference of drop resistance, perishable grounding body, the technical problem of contaminated soil underground water source, power system Resistance of Grounding Grids value can be effectively reduced, power equipment safety stable operation is safeguarded；Structure is simplified, and is easy to construction, beneficial to control cost.
Description
Technical field
The present invention relates to field of power, more particularly to one kind graphite compound resistance reduction is vertically grounded for electric power grounding grid
Cylinder and its construction method.
Background technology
Prior artIn, power system grounded screen is to realize that power equipment lightning protection sets with the important foundation electric power of working earthing
Apply.Power system transmission line tower grounding net can effectively dissipation lightning current and short-circuit current, be to reduce transmission line of electricity
The important lightning protection means and infrastructure of shaft tower insulator arc-over accident.And power plants and station grounded screen is even more and realizes large-scale power
Equipment working earthing and the important means of overvoltage protection.Either transmission line tower grounding network or power plants and station are grounded
Net, less grounding resistance is to ensure that grounded screen realizes the basic parameter of quick, safe dissipation electric current, therefore, how to realize
The grounding resistance-reducing of transmission line tower grounding network and power plants and station grounded screen, is that power system power transmission and transformation field frequently encounters
Practical Project problem.
In Practical Project, except small part power plants and station grounded screen design the initial stage according to geological prospecting reasonable selection compared with
The geology of small soil resistivity, most grounded screen is intended to face the geological environment of the high soil resistivities such as sandstone, rock, with
And the irregular terrain profiles such as gully, slope, so as to bring great difficulty to grounding design and the transformation of later stage grounding resistance-reducing.Except one
Can be dropped outside resistance using extension under the conditions of a little places are open, grounding resistance-reducing in many cases is limited intelligence using vertical by place
Drop resistance method carries out grounding resistance-reducing.
At present, the conventional vertical drop resistance method of power system is generally comprised：Deep well resistance-reducing method, ion bar vertical grounding electrode, hang down
Direct earth polar with the method such as friction reducer and deep-well explosion, wherein most commonly seen with friction reducer with vertical grounding electrode.Power system
The long-term O＆M of grounded screen experience have shown that, although vertical grounding electrode can be reduced in a short time with friction reducer method grounded screen ground connection electricity
Resistance, but extension over time, friction reducer（Particularly ionic friction reducer）Serious, grounded screen is lost in rainwater and underground water
Drop hinder the long-lasting bounce-back that cannot be guaranteed, easily cause grounding resistance.Additionally, for using round steel as earthing material
Grounded screen, friction reducer is deposited on the bottom of ground hole mostly during due to construction, can not be uniformly distributed in ground hole, not only causes
The waste of resistance-lowering material is also easy to cause oxygen concentration difference chemical primary cell path, accelerates the corrosion of metallic ground body.
The content of the invention
The present inventionTechnical problem to be solved is, there is provided one kind is vertically grounded that graphite is compound to drop for electric power grounding grid
Resistance cylinder and its construction method, it is possible to increase resistance-reducing efficiency, solve the long-lasting difference of drop resistance, perishable grounding body, contaminated soil underground
The technical problem at water source, can effectively reduce power system Resistance of Grounding Grids value, safeguard power equipment safety stable operation；Knot
Structure is simplified, and is easy to construction, beneficial to control cost.
Answered in order to solve the above technical problems, the embodiment of the invention provides one kind and be vertically grounded graphite for electric power grounding grid
Drop resistance cylinder is closed, to be engaged with Grounding Grids in transmission line of electricity, the vertical earth work of hair/grounding net of transformer substation, with
Power frequency and impulse earthed resistance in grounded screen are reduced, including：Grounding Grids；The graphite for being arranged on Grounding Grids periphery is combined
Drop resistance cylinder, wherein：Graphite compound resistance reduction cylinder is shaped by least one shaping ring, the opposite end of graphite compound resistance reduction cylinder
It is fastened on Grounding Grids by anti-corrosion connecting line.
Wherein, graphite compound resistance reduction cylinder is formed through shaping ring binding sizing after curling by graphite composite, and graphite is multiple
Zoarium is formed by the braiding of the composite stone line of ink marker.
Wherein, graphite composite is foldable, and graphite composite is first-class to be uniformly provided with mesh, and the diameter dimension of mesh is less than
Or equal to 10mm, it is used to obtain the conductance of demand.
Wherein, the composite stone line of ink marker is mainly prepared from by high-purity crystalline flake graphite, synthetic fibers and ethyl acrylate, its
In：The phosphorus content of high-purity crystalline flake graphite is less than 90%.
Wherein, the synthetic fibers that the inner core of anti-corrosion connecting line is used are Kafra fiber and glass fibre, wherein：By twisting with the fingers
The diameter dimension of anti-corrosion connecting line of type is made more than or equal to 5mm, its tensile strength is more than or equal to 120N.
Wherein, on the graphite compound resistance reduction cylinder that shaping ring is fixed in vertical ground hole at interval of the distance of 1m ~ 2m, sizing
Ring is C-shaped.
Wherein, the section of shaping ring is rounded or deltiod, is made up of aluminium, copper or the stronger steel of plasticity；Shaping ring
Opposite end be set to taper, be used to pierce through on graphite compound resistance reduction cylinder.
In order to solve the above technical problems, being vertically grounded the compound drop of graphite for electric power grounding grid the invention also discloses a kind of
The construction method of cylinder is hindered, to match with Grounding Grids in transmission line of electricity, the vertical earth work of hair/grounding net of transformer substation
Close, to reduce power frequency and impulse earthed resistance in grounded screen, comprise the following steps：Grounding Grids are arranged in the compound drop of graphite
The center of cylinder is hindered, wherein, the soil gap between the internal diameter of external diameter and graphite the compound resistance reduction cylinder of Grounding Grids is average
Distance is more than 5cm, wherein：Graphite compound resistance reduction cylinder is shaped by least one shaping ring, the phase of graphite compound resistance reduction cylinder
Two ends are fastened on Grounding Grids by anti-corrosion connecting line.
Wherein, graphite compound resistance reduction cylinder is formed through shaping ring binding sizing again after curling by graphite composite, graphite
Complex is formed by the braiding of the composite stone line of ink marker, wherein：The preparation of the composite stone line of ink marker is comprised the following steps：The height of intercalation will be aoxidized
Pure crystalline flake graphite possesses the elastic worm graphite of the puffy of plasticity by being made after 900 ~ 1100 DEG C of high-temperature process；Elasticity
Worm graphite is pressed into graphite paper by roll squeezer again, and the synthesis fibre for infiltrating ethyl acrylate is placed between two-layer graphite paper
Dimension, obtains composite graphite paper through roll-forming again, and composite graphite paper is cleaved to be prepared into the composite stone of different-diameter with twisting thread
The line of ink marker, Kafra fiber accounts for the ratio of total fiber quantity more than or equal to 30% in the single composite stone line of ink marker.
Wherein, the opposite end of graphite compound resistance reduction cylinder is fastened on the step bag on Grounding Grids by anti-corrosion connecting line
Include：In the ground end of Grounding Grids, be banded in graphite compound resistance reduction cylinder on Grounding Grids by anti-corrosion connecting line, wherein：It is anti-
Rotten connecting line winds 5 ~ 10 weeks on Grounding Grids；Fine earth is filled between Grounding Grids and graphite compound resistance reduction cylinder, and
Both are connected in the near end of Grounding Grids.
Implementation is of the invention to be vertically grounded graphite compound resistance reduction cylinder and its construction method for electric power grounding grid, with as follows
Beneficial effect：
Firstth, graphite compound resistance reduction cylinder is arranged on the periphery of Grounding Grids, wherein：Graphite compound resistance reduction cylinder passes through at least one
Shaping ring is shaped, and the opposite end of graphite compound resistance reduction cylinder is fastened on Grounding Grids by anti-corrosion connecting line, works as width
When the lightning current or short circuit current that value is up to tens of or even hundreds of kilo-amperes flow through Grounding Grids, because Grounding Grids outer layer is applied
If graphite compound resistance reduction cylinder this good conductor, the diffusing volume of conductor is not only increased, while " spark is put in Grounding Grids
Under electricity " effect effect, the soil between the two and outside graphite compound resistance reduction cylinder becomes partly to lead due to electrical breakdown and thermal breakdown
Body, so as to increase considerably the region of participation diffusing in soil, earth resistance is worth to effectively reduction.
Secondth, graphite compound resistance reduction cylinder can greatly increase effective contact area of whole tower grounding net and soil, drop
The contact resistance of low Grounding Grids and soil.Traditional friction reducer is overcome with underground water and rain drop erosion losing issue, drop resistance
It is long-lasting to be guaranteed.The resistivity of graphite compound resistance reduction cylinder is generally 10-5Ω m ranks, connect than other friction reducers or ion
Electric conductivity several orders of magnitude high of the conventional resistance-lowering material of ground rod etc., it is to avoid the drawbacks of traditional friction reducer corrosion metallic ground body,
Effectively extend the service life of grounded screen.
3rd, structure is simplified, and the connected mode that graphite compound resistance reduction cylinder is connected with grounding body is simple, effectively prevent drop resistance
Uneven and earthing module the big problem of welding difficulty is laid in agent.Graphite compound resistance reduction cylinder connects suitable for electric power line pole tower
The drop of earth mat, power plants and station grounded screen and other power system grounded screens hinders construction, wide adaptability, and material cost and applies
Work cost is significantly reduced.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is that the embodiment of the present invention is used for Grounding Grids and stone that electric power grounding grid is vertically grounded graphite compound resistance reduction cylinder
The structural representation that black compound resistance reduction cylinder is attached.
Fig. 2 is that the embodiment of the present invention is used for Grounding Grids and stone that electric power grounding grid is vertically grounded graphite compound resistance reduction cylinder
The cross-sectional view in gap between black compound resistance reduction cylinder.
Fig. 3 is that the embodiment of the present invention is vertically grounded the shaping ring of graphite compound resistance reduction cylinder for electric power grounding grid and graphite is answered
Close the structural representation of drop resistance cylinder connection.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1-Figure 3, it is that the present invention is used for the embodiment one that electric power grounding grid is vertically grounded graphite compound resistance reduction cylinder.
The field that the cylinder application of graphite compound resistance reduction is vertically grounded for electric power grounding grid in the present embodiment is electric system AC electricity transmission
Overhead line structures grounded screen, power system power plants and station and other power equipment grounded screens.It is used in transmission line of electricity, hair/become
It is engaged with Grounding Grids in the vertical earth work of power station grounded screen, to reduce power frequency and impulse grounding electricity in grounded screen
Resistance.
In the present embodiment be vertically grounded for electric power grounding grid graphite compound resistance reduction cylinder, including：Grounding Grids 1, if
The graphite compound resistance reduction cylinder 2 in the periphery of Grounding Grids 1 is put, wherein：Graphite compound resistance reduction cylinder 2 passes through at least one shaping ring 3
Shaped, the opposite end of graphite compound resistance reduction cylinder 2 is fastened on Grounding Grids 1 by anti-corrosion connecting line 5.
Grounding Grids 1 can cover steel and the compound earthing material of soft graphite in shaft-like by galvanized steel, mild steel, copper
Middle any material is obtained, and Grounding Grids 1 are arranged in vertical ground hole or ground slot 4, and Grounding Grids 1 set in the present embodiment
Put in ground hole 4.Furtherly, voltage class uses the plating of diameter 12mm for certain overhead power transmission line pole tower of 110kV
Zinc steel earthing material constitutes square frame ray shape grounded screen.Due to the shaft tower be located at transformer station end of incoming cables, according to lightning protection require into
Traveling line segment lightning protection, the measured discovery earth resistance value spy that is above standard carries out grounding reconstruction.According to the reality for obtaining
Data message is calculated, and grounded screen is by the way of extension adds Grounding Grids to carry out drop resistance：On four summits of root evolution frame
It is the ground hole 4 of 7.5m to use trepan excavating depth, and auxiliary drop is carried out using graphite compound resistance reduction cylinder 2 in ground hole 4
Resistance.
Further, graphite compound resistance reduction cylinder 2 is fixed on the periphery of Grounding Grids 1.During specific implementation, the compound drop of graphite
Resistance cylinder 2 is formed through shaping ring binding sizing after curling by graphite composite 21, and graphite composite 21 is by the composite stone line of ink marker
21a braidings are formed.
Wherein：Graphite compound resistance reduction cylinder 2 is to bind sizing through shaping ring 3 again after curling by graphite composite 21 to form,
Graphite composite 21 is formed by composite stone line of ink marker 21a braidings, composite stone line of ink marker 21a it is main by high-purity crystalline flake graphite, synthesize fibre
Dimension and ethyl acrylate are prepared from.Wherein：The preparation of composite stone line of ink marker 21a is comprised the following steps：The height of intercalation will be aoxidized
Pure crystalline flake graphite possesses the elastic worm graphite of the puffy of plasticity by being made after 900 ~ 1100 DEG C of high-temperature process；
Elastic worm graphite is pressed into graphite paper by roll squeezer again, is placed between two-layer graphite paper and infiltrated ethyl acrylate
Synthetic fibers, obtain composite graphite paper through roll-forming again, composite graphite paper is cleaved to be prepared into different-diameter with twisting thread
The composite stone line of ink marker, in the single composite stone line of ink marker Kafra fiber account for total fiber quantity ratio be more than or equal to 30%.
Further, the entirety of graphite compound resistance reduction cylinder 2 is cylindrical, can arbitrarily crimp and fold.Due to its be by
Composite stone line of ink marker 21a braidings are formed, and according to the difference of the size of mesh between composite stone line of ink marker 21a when weaving, its structure can
Present with mesh and two kinds of structures without mesh.During specific implementation, its be curled into columnar diameter be generally 10 ~ 30cm it
Between, the mesh size between composite stone line of ink marker 21a is generally no greater than 10mm.Its effect is：Woven according to conductance demand modeling
When mesh size, can be woven into different-diameter, different aperture graphite compound resistance reduction cylinder.
Further, shaping ring 3 is fixed on the graphite compound resistance reduction cylinder 2 in vertical ground hole 4 at interval of the distance of 1m ~ 2m
On, shaping ring 3 is C-shaped.During specific implementation, the section of shaping ring 3 is rounded or deltiod, stronger by aluminium, copper or plasticity
Steel are made；The opposite end of shaping ring 3 is set to taper, is used to pierce through on graphite compound resistance reduction cylinder 2 to graphite compound resistance reduction
Cylinder 2 is fixed.
During specific implementation, the outside for being fixed on graphite compound resistance reduction cylinder 2 in the shaping ring 3 of C fonts is molded with to it,
The graphite compound resistance reduction cylinder 2 being placed in vertical ground hole 4 is surrounded on the surrounding of Grounding Grids 1, at interval of the distance of 1m ~ 2m,
Shaping ring 3 is fixed to it.
Further, anti-corrosion connecting line 5 includes：It is arranged on high-strength anti-corrosion connecting line and the setting of near end tie point A
In the high-strength anti-corrosion connecting line of ground end tie point B.During specific implementation, the synthesis that the inner core of above-mentioned anti-corrosion connecting line is used is fine
Tie up is Kafra fiber and glass fibre.
Preferably, the preparation of high-strength anti-corrosion connecting line 5 is similar with the method for composite stone line of ink marker 21a, and its difference exists
In：The synthetic fibers for being used are Kafra fiber and glass fibre, wherein Kafra fiber is accounted for always in the single composite stone line of ink marker
Ratio >=30% of fiber number.The diameter dimension of the anti-corrosion connecting line being molded by twisting is more than or equal to 5mm, and its tension is strong
Degree is more than or equal to 120N.
The invention also discloses a kind of construction method that graphite compound resistance reduction cylinder is vertically grounded for electric power grounding grid, it is used to
It is engaged with Grounding Grids in transmission line of electricity, the vertical earth work of hair/grounding net of transformer substation, to reduce work in grounded screen
Frequency and impulse earthed resistance, comprise the following steps：Grounding Grids 1 are arranged in the center of graphite compound resistance reduction cylinder 2, its
In, the soil gap average distance between the internal diameter of external diameter and graphite the compound resistance reduction cylinder 2 of Grounding Grids 1 is more than 5cm, its
In：Graphite compound resistance reduction cylinder 2 is shaped by least one shaping ring 3, and the opposite end of graphite compound resistance reduction cylinder 2 is by anti-
Rotten connecting line 5 is fastened on Grounding Grids.
Wherein, graphite compound resistance reduction cylinder 2 is formed through shaping ring binding sizing after curling by graphite composite 21, graphite
Complex 21 is formed by composite stone line of ink marker 21a braidings, wherein：The preparation of composite stone line of ink marker 21a is comprised the following steps：Will oxidation
The high-purity crystalline flake graphite of intercalation possesses the elastic worm of the puffy of plasticity by being made after 900 ~ 1100 DEG C of high-temperature process
Graphite；Elastic worm graphite is pressed into graphite paper by roll squeezer again, is placed between two-layer graphite paper and infiltrated acrylic acid second
The synthetic fibers of ester, again through roll-forming obtain composite graphite paper, composite graphite paper it is cleaved with twist thread be prepared into it is different directly
The composite stone line of ink marker in footpath, Kafra fiber accounts for the ratio of total fiber quantity more than or equal to 30% in the single composite stone line of ink marker.
Wherein, the opposite end of graphite compound resistance reduction cylinder 2 is fastened on the step on Grounding Grids by anti-corrosion connecting line 5
Including：In the ground end B of Grounding Grids, be banded in graphite compound resistance reduction cylinder 2 on Grounding Grids 1 by anti-corrosion connecting line 5, its
In：Anti-corrosion connecting line 5 winds 5 ~ 10 weeks on Grounding Grids 1；Filled out between Grounding Grids 1 and graphite compound resistance reduction cylinder 2
Fine earth is filled, and both are connected in the near end A of Grounding Grids 1.
During specific implementation, the average diameter of ground hole 4 is 45cm during construction, and top diameter is slightly larger than base diameter.Using
Graphite compound resistance reduction cylinder 2 a diameter of 20cm, entire length be about 7.5m.It is measured, the resistance of graphite compound resistance reduction cylinder 2
Rate measured value about 5.72 × 10-5Ω·m.Graphite compound resistance reduction cylinder 2 is connected into line tying using the high intensity of diameter 6mm during construction
In the bottom of Grounding Grids 1." C " font shaping ring 3 selects width 5mm, the flat aluminum strip of thickness 2mm, 600mm long.At interval of
1m is fixed shaping using " C " font shaping ring 3, and the Grounding Grids 1 that outer layer is cased with graphite compound resistance reduction cylinder 2 are laid
In ground hole 4, fine earth is filled in the space between Grounding Grids 1 and graphite compound resistance reduction cylinder 2.Using high-strength anti-corrosion
Graphite compound resistance reduction cylinder is banded in connecting line 5 the near end A of Grounding Grids, subsequently completes the filling of whole ground hole.Through
Measured after construction and find near 5 Ω of the pole tower ground resistance value or so, met actual transmission line of electricity and enter line segment lightning protection demand.
Implementation is of the invention to be vertically grounded graphite compound resistance reduction cylinder and its construction method for electric power grounding grid, with as follows
Beneficial effect：
Firstth, graphite compound resistance reduction cylinder is arranged on the periphery of Grounding Grids, wherein：Graphite compound resistance reduction cylinder passes through at least one
Shaping ring is shaped, and the opposite end of graphite compound resistance reduction cylinder is fastened on Grounding Grids by anti-corrosion connecting line, works as width
When the lightning current or short circuit current that value is up to tens of or even hundreds of kilo-amperes flow through Grounding Grids, because Grounding Grids outer layer is applied
If graphite compound resistance reduction cylinder this good conductor, the diffusing volume of conductor is not only increased, while " spark is put in Grounding Grids
Under electricity " effect effect, the soil between the two and outside graphite compound resistance reduction cylinder becomes partly to lead due to electrical breakdown and thermal breakdown
Body, so as to increase considerably the region of participation diffusing in soil, earth resistance is worth to effectively reduction.
Secondth, graphite compound resistance reduction cylinder can greatly increase effective contact area of whole tower grounding net and soil, drop
The contact resistance of low Grounding Grids and soil.Traditional friction reducer is overcome with underground water and rain drop erosion losing issue, drop resistance
It is long-lasting to be guaranteed.The resistivity of graphite compound resistance reduction cylinder is generally 10-5 Ω m ranks, is connect than other friction reducers or ion
Electric conductivity several orders of magnitude high of the conventional resistance-lowering material of ground rod etc., it is to avoid the drawbacks of traditional friction reducer corrosion metallic ground body,
Effectively extend the service life of grounded screen.
3rd, structure is simplified, and the connected mode that graphite compound resistance reduction cylinder is connected with grounding body is simple, effectively prevent drop resistance
Uneven and earthing module the big problem of welding difficulty is laid in agent.Graphite compound resistance reduction cylinder connects suitable for electric power line pole tower
The drop of earth mat, power plants and station grounded screen and other power system grounded screens hinders construction, wide adaptability, and material cost and applies
Work cost is significantly reduced.
Claims (10)
1. it is a kind of to be vertically grounded graphite compound resistance reduction cylinder for electric power grounding grid, in transmission line of electricity, hair/grounding net of transformer substation
Vertical earth work in be engaged with Grounding Grids, to reduce power frequency and impulse earthed resistance in grounded screen, its feature exists
In, including：
Grounding Grids；
The graphite compound resistance reduction cylinder of the Grounding Grids periphery is arranged on, wherein：The graphite compound resistance reduction cylinder is by least
One shaping ring is shaped, and the opposite end of graphite compound resistance reduction cylinder is fastened on by anti-corrosion connecting line and described vertically connect
On ground body.
2. it is as claimed in claim 1 to be vertically grounded graphite compound resistance reduction cylinder for electric power grounding grid, it is characterised in that the stone
Black compound resistance reduction cylinder is formed through shaping ring binding sizing again after curling by graphite composite, and the graphite composite is
Formed by the braiding of the composite stone line of ink marker.
3. it is as claimed in claim 2 to be vertically grounded graphite compound resistance reduction cylinder for electric power grounding grid, it is characterised in that the stone
Black complex is foldable, and the graphite composite is first-class to be uniformly provided with mesh, and the diameter dimension of the mesh is less than or equal to
10mm, is used to obtain the conductance of demand.
4. graphite compound resistance reduction cylinder is vertically grounded for electric power grounding grid as claimed in claim 2 or claim 3, it is characterised in that institute
The composite stone line of ink marker is stated mainly to be prepared from by high-purity crystalline flake graphite, synthetic fibers and ethyl acrylate, wherein：High-purity squama
The phosphorus content of piece graphite is less than 90%.
5. it is as claimed in claim 1 to be vertically grounded graphite compound resistance reduction cylinder for electric power grounding grid, it is characterised in that described anti-
The synthetic fibers that the inner core of rotten connecting line is used are Kafra fiber and glass fibre, wherein：The anti-corrosion being molded by twisting connects
The diameter dimension of wiring is more than or equal to 5mm, and its tensile strength is more than or equal to 120N.
6. it is as claimed in claim 1 to be vertically grounded graphite compound resistance reduction cylinder for electric power grounding grid, it is characterised in that described fixed
On the graphite compound resistance reduction cylinder that type ring is fixed in vertical ground hole at interval of the distance of 1m ~ 2m, the shaping ring is C-shaped.
7. it is as claimed in claim 1 to be vertically grounded graphite compound resistance reduction cylinder for electric power grounding grid, it is characterised in that described fixed
The section of type ring is rounded or deltiod, is made up of aluminium, copper or the stronger steel of plasticity；
The opposite end of the shaping ring is set to taper, is used to pierce through on graphite compound resistance reduction cylinder.
8. it is a kind of be vertically grounded for electric power grounding grid graphite compound resistance reduction cylinder construction method, to transmission line of electricity, hair/become
It is engaged with Grounding Grids in the vertical earth work of power station grounded screen, to reduce power frequency and impulse grounding electricity in grounded screen
Resistance, it is characterised in that comprise the following steps：
Grounding Grids are arranged in the center of graphite compound resistance reduction cylinder, wherein, the external diameter of the Grounding Grids and institute
The soil gap average distance between the internal diameter of graphite compound resistance reduction cylinder is stated more than 5cm, wherein：The graphite compound resistance reduction cylinder is logical
Cross at least one shaping ring to be shaped, described in the opposite end of graphite compound resistance reduction cylinder is fastened on by anti-corrosion connecting line
On Grounding Grids.
9. it is as claimed in claim 8 to be used for the construction method that electric power grounding grid is vertically grounded graphite compound resistance reduction cylinder, its feature
It is that the graphite compound resistance reduction cylinder is formed through shaping ring binding sizing after curling by graphite composite, the stone
Black complex is formed by the braiding of the composite stone line of ink marker, wherein：
The preparation of the composite stone line of ink marker is comprised the following steps：
The high-purity crystalline flake graphite of intercalation will be aoxidized by being made the puffy for possessing plasticity after 900 ~ 1100 DEG C of high-temperature process
Elastic worm graphite；
The elastic worm graphite is pressed into graphite paper by roll squeezer again, is placed between two-layer graphite paper and infiltrated acrylic acid
The synthetic fibers of ethyl ester, obtain composite graphite paper through roll-forming again, and composite graphite paper is cleaved to be prepared into difference with twisting thread
The composite stone line of ink marker of diameter, Kafra fiber accounts for the ratio of total fiber quantity more than or equal to 30% in the single composite stone line of ink marker.
10. it is as claimed in claim 8 to be used for the construction method that electric power grounding grid is vertically grounded graphite compound resistance reduction cylinder, its feature
It is that the opposite end of the graphite compound resistance reduction cylinder is fastened on the step bag on the Grounding Grids by anti-corrosion connecting line
Include：
In the ground end of the Grounding Grids, be banded in for graphite compound resistance reduction cylinder described vertical by the anti-corrosion connecting line
On grounding body, wherein：The anti-corrosion connecting line winds 5 ~ 10 weeks on the Grounding Grids；In the Grounding Grids and institute
State and fill fine earth between graphite compound resistance reduction cylinder, and both are connected in the near end of Grounding Grids.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710073929.0A CN106785512B (en) | 2017-02-10 | 2017-02-10 | Graphite composite resistance reduction method and device for vertical grounding body of power grounding grid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710073929.0A CN106785512B (en) | 2017-02-10 | 2017-02-10 | Graphite composite resistance reduction method and device for vertical grounding body of power grounding grid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594822A (en) * | 2021-07-29 | 2021-11-02 | 福建省宏闽电力工程监理有限公司 | Transformer substation engineering resistor grounding construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594822A (en) * | 2021-07-29 | 2021-11-02 | 福建省宏闽电力工程监理有限公司 | Transformer substation engineering resistor grounding construction method |
| CN113594822B (en) * | 2021-07-29 | 2024-04-19 | 中达安股份有限公司 | Transformer substation engineering resistor grounding construction method |
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| CN106785512B (en) | 2023-03-31 |
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