CN105720390B - Earthing module and preparation method thereof - Google Patents
Earthing module and preparation method thereof Download PDFInfo
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- CN105720390B CN105720390B CN201410729394.4A CN201410729394A CN105720390B CN 105720390 B CN105720390 B CN 105720390B CN 201410729394 A CN201410729394 A CN 201410729394A CN 105720390 B CN105720390 B CN 105720390B
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- earthing module
- pole piece
- kneading
- metal pole
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Abstract
The invention discloses a kind of earthing modules and preparation method thereof, belong to electric power and technical field of communication equipment.The earthing module includes metal pole piece and wraps up the non-metallic conducting material of the metal pole piece, it is calculated by mass percentage, the non-metallic conducting material is made of 10 15% graphous graphite powder, 45 60% natural scale graphite and 30 40% high-mark cement, the earthing module is small by seasonal effect, has the characteristics that easy for installation, corrosion-resistant, dependable performance.The present invention also provides a kind of preparation methods of the earthing module, and including processes such as dispensing, kneading, extruding, pressurize, maintenances, this method is easily operated, of low cost.
Description
Technical field
The present invention relates to electric power and technical field of communication equipment, particularly relate to a kind of earthing module and preparation method thereof.
Background technology
Power ground system is to ensure the critical facility of power equipment safety reliability service.Earthing or grounding means is grounding body and connects
The general name of ground wire, effect is that conducting lightning currents are imported underground, and the protection of lightning-protection system is largely related with this.Ground connection
Body is also known as earthing pole, is the metallic conductor or conductor group contacted directly with soil, is divided into artificial earth electrode and natural grounding substance.It connects
The conductor that ground body is electrically connected as the earth soil close contact and between offer and the earth, safe diffusing thunder energy let out it
Enter the earth.
Traditional grounding body is mostly metallic conductor, most common to have round steel, angle steel, steel pipe, copper rod, copper mesh etc., with netted
The form of structure forms grounded screen.In acid or basic soil affinity force difference and metal body surface easily occurs for metallic ground body
Corrosion and change ground resistance, when organic substance is excessive in soil, easily formed metal body surface showed by what ink wrapped up
As traditional metallic ground body is also more there are materials in addition, and cost is high, short life, the problem of stability is poor, and should not be in high soil
Earth resistivity area uses, big by seasonal effect.
The content of the invention
It is mostly metallic conductor for traditional grounding body, of high cost, takes up a large area, perishable, the shortcomings that resistance value is unstable,
The present invention is using non-metallic conducting material and metal pole piece as raw material, and it is big to provide a kind of surface area, light-weight, corrosion-resistant, structure letter
Single, dependable performance is durable, and resistance value is stablized, cheap earthing module and preparation method thereof.
To achieve the above object of the invention, technical scheme is as follows：
A kind of earthing module, the non-metallic conducting material including metal pole piece and the package metal pole piece, by quality hundred
Divide content calculation, the non-metallic conducting material is by the graphous graphite powder of 10-15%, the natural scale graphite of 45-60% and 30-
40% high-mark cement composition.
Preferably, calculated by mass percentage, graphous graphite powder, 45- of the non-metallic conducting material by 14-15%
50% natural scale graphite and the high-mark cement composition of 35-40%；It is highly preferred that calculated by mass percentage, it is described
Non-metallic conducting material is made of 15% graphous graphite powder, 50% natural scale graphite and 35% high-mark cement.
Preferably, the granularity of the graphous graphite powder is less than 0.5 ㎜, and the specification of the natural scale graphite is under 50 mesh sieves
Object.
Preferably, the label of the high-mark cement is 525#.
Preferably, the metal pole piece is zinc-plated screw-thread steel.
A kind of preparation method of earthing module, which is characterized in that comprise the following steps：
1) dispensing：It is calculated by mass percentage, weighs the graphous graphite powder of 10-15%, the natural phosphorus slabstone of 45-60%
The high-mark cement of ink and 30-40%；
2) kneading：Graphous graphite powder, natural scale graphite in dispensing is put into kneading pot, adds a certain amount of water, is stirred
It 15-30 minutes, adds high-mark cement and stirs 10-20 minutes, make its abundant kneading uniform；
3) squeeze：The good raw material of kneading is poured into mold and metal pole piece compression moulding；
4) pressurize：Shaped article pressurize 8-15 minutes under a certain pressure；
5) demoulding maintenance：Product is placed on the environment of 28 ± 1 DEG C of room temperature, humidity more than 80%, maintains 2-5 days, then takes off
Mould, avoid light place.
In above-mentioned extrusion process, the air in mold is fully excluded by effect of vibration, treats that raw material fills up mold cavity
After body, the partial moisture in raw material is squeezed into discharge, is further continued for the addition raw material in mold, vibration discharge air squeezes again
Moisture is discharged, then repeats that the process is multiple, obtains the product of compression moulding.
When carrying out pressurize to shaped article, pressurize is preferably carried out under 8-10MPa pressure, the dwell time is preferably 10 points
Clock.
It in step is maintained in the demoulding, is placed in the environment that preferred product is 90% in humidity, service time is 3 days.
For earthing module of the present invention, inventor finally determines its non-metallic conducting material through repetition test
Composition, i.e., by the graphous graphite powder of 10-15%, the natural scale graphite of 45-60% and the high-mark cement group of 30-40%
Into, it is preferable that when being 14-15% according to graphous graphite powder, natural scale graphite is 45-50%, high-mark cement 35-40%
When being matched, it is highly preferred that ought be 15% according to graphous graphite powder, natural scale graphite is 50% and high-mark cement is
35% when being matched, and the comprehensive performance for the earthing module being prepared is more excellent, be due to this kind of nonmetallic materials have it is very strong
Hygroscopicity and moisture retention, acted on by tide, module can to soil texture layer discharge electrolytic ion, play reduction ground resistance
Effect, reduce seasonal effect so that resistance value energy stable for extended periods of time；In addition graphite has very strong corrosion resistance in itself, and changes
It learns property to stablize, while the corrosion resistance of metal pole piece is caused to strengthen, extend using the longevity by metal pole piece package wherein
Life.
Earthing module of the present invention has the advantages that：
1st, corrosion-resistant, nonhazardous, service life are long, easy for installation.
2nd, energy moisture-absorbing moisture-keeping, ground resistance are low.
3rd, the ground resistance of high resistance soil can effectively be reduced.
4th, ground resistance is small by seasonal effect, can stable for extended periods of time.
5th, resistance to heavy current impact, the increase of resistance value portion.
In addition, for the preparation method of earthing module of the present invention, metal pole piece squeezes together with nonmetallic materials
Shaping so that product is durable, and preparation process is simple, easily operated, of low cost, suitable for large-scale production.
Description of the drawings
Fig. 1 is the preparation technology flow chart of the earthing module of the present invention.
Specific embodiment
To make the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with specific implementation
Example is described in detail.
Embodiment 1
A kind of earthing module connects pole piece by external non-metallic conducting material package built-in metal and forms, with weight percent
Meter, for external non-metallic conducting material by 15% graphous graphite powder, 50% natural scale graphite and 35% high grade are conductive
Cement composition, built-in metal grounding body are 18 zinc-plated screw-thread steels of φ.
The earthing module may be employed customary preparation methods and be made, such as include the following steps：
(1) dispensing：It is weighed by weight ratio, granularity is less than the graphous graphite powder of 0.5 ㎜：15%, crossing grit number is
50 natural scale graphite：50%, 525# high-mark cement：35%；
(2) kneading：Graphous graphite powder, natural flake graphite and high-mark cement in dispensing is put into kneading pot, is added
A certain amount of water stirs 40 minutes, makes its abundant kneading uniform；
(3) it is molded：Mixture is placed in compression moulding in mold, obtains blank, briquetting pressure 8MPa, pressurize 5 minutes,
It dries to obtain product under embryo material normal temperature and pressure.
The specification obtained with this method is the earthing module of ￠ 150*800, and weight is 12kg after testing, and surface area is
0.4m2, resistivity at room temperature is 0.26 Ω .m；10A power currents are applied 5 times to earthing module sample, every time lasting 10s,
Every 2 minor tick 30min, earthing module sample resistance change rate value is 12% before and after experiment；8/20 μ is applied to earthing module sample
S, 1KA dash current 20 times, per minor tick 1min, earthing module sample resistance change rate value is 9% before and after experiment；Mould will be grounded
Block sample carries out unbroken and disrepair phenomenon during mechanical strength test；Corrosion-resistant test result is that corrosion-resistant rate is 0.006mm/
Year.
Embodiment 2
A kind of earthing module is made of external non-metallic conducting material package built-in metal pole piece, by weight percentage,
External non-metallic conducting material is by 10% graphous graphite powder, 60% natural scale graphite and 40% high grade electroconductive cement
Composition, built-in metal grounding body are 18 zinc-plated screw-thread steels of φ.
The earthing module may be employed customary preparation methods and be made, such as include the following steps：
(1) dispensing：It is weighed by weight ratio, granularity is less than the graphous graphite powder of 0.5 ㎜：10%, crossing grit number is
50 natural scale graphite：60%, 525# high-mark cement：40%；
(2) kneading：Graphous graphite powder, natural flake graphite and high-mark cement in dispensing is put into kneading pot, is added
A certain amount of water stirs 40 minutes, makes its abundant kneading uniform；
(3) it is molded：Mixture is placed in compression moulding in mold, obtains blank, briquetting pressure 10MPa, pressurize 8 minutes,
It dries to obtain product under embryo material normal temperature and pressure.
The specification obtained with this method is the earthing module of ￠ 180*800, and weight is 20kg after testing, and surface area is
0.5m2, resistivity at room temperature is 0.25 Ω .m；10A power currents are applied 5 times to earthing module sample, every time lasting 10s,
Every 2 minor tick 30min, earthing module sample resistance change rate value is 13% before and after experiment；8/20 μ is applied to earthing module sample
S, 1KA dash current 20 times, per minor tick 1min, earthing module sample resistance change rate value is 8.5% before and after experiment；It will ground connection
Module sample carries out unbroken and disrepair phenomenon during mechanical strength test；Corrosion-resistant test result is that corrosion-resistant rate is
0.005mm/.
Embodiment 3
The present embodiment provides the earthing module that a kind of specification is ￠ 150*800 similarly to Example 1, the difference is that should
Earthing module is prepared according to preparation method of the present invention, and specific preparation method includes the following steps：
(1) dispensing：It is weighed by weight ratio, granularity is less than the graphous graphite powder of 0.5 ㎜：15%, crossing grit number is
50 natural scale graphite：50%, 525# high-mark cement：35%.
(2) kneading：Graphous graphite powder with honest material and natural flake graphite are put into kneading pot, adds a certain amount of water, stirs
It mixes 25 minutes；The high-mark cement added in dispensing stirs 20 minutes, makes its abundant kneading uniform.
(3) squeeze：Metal pole piece is made with the plating of 18 zinc-plated screw-thread steels of φ, the raw material of kneading is put into mold, in vibration frequency
It is vibrated 5 minutes under the conditions of rate 200HZ, 1.35 ㎜ of amplitude, the air allowed in mold is fully discharged；Treat that raw material fills up cavity body of mould
Afterwards, the partial moisture in raw material is squeezed out.It being further continued for raw material is added in bucket, then vibration discharge air squeezes water removal again,
Filler extruding is iteratively repeated, obtains shaped article.
(4) pressurize：By the product of extrusion forming under 8MPa pressure pressurize 8 minutes.
(5) demoulding maintenance：Product after pressurize is placed on to the environment of 28 ± 1 DEG C of room temperature, humidity 90%, maintains 3 days, so
After dismantle mold, with covered rearing with plastic film, be put into storehouse, avoid the place of high temperature, direct sunlight.
The specification obtained with this method is the earthing module of ￠ 150*800, and weight is 12kg after testing, and surface area is
0.4m2, resistivity at room temperature is 0.23 Ω .m；10A power currents are applied 5 times to earthing module sample, every time lasting 10s,
Every 2 minor tick 30min, earthing module sample resistance change rate value is 10% before and after experiment；8/20 μ is applied to earthing module sample
S, 1KA dash current 20 times, per minor tick 1min, earthing module sample resistance change rate value is 8% before and after experiment；Mould will be grounded
Block sample carries out unbroken and disrepair phenomenon during mechanical strength test；Corrosion-resistant test result is that corrosion-resistant rate is 0.005mm/
Year.
Embodiment 4
The present embodiment provides the earthing module that a kind of specification is ￠ 180*800 similarly to Example 2, the difference is that should
Earthing module is prepared according to preparation method of the present invention, and specific preparation method includes the following steps：
(1) dispensing：It is weighed by weight ratio, granularity is less than the graphous graphite powder of 0.5 ㎜：10%, crossing grit number is
50 natural scale graphite：60%, 525# high-mark cement：40%.
(2) kneading：Graphous graphite powder with honest material and natural flake graphite are put into kneading pot, adds a certain amount of water, stirs
It mixes 20 minutes；The high-mark cement added in dispensing stirs 15 minutes, makes its abundant kneading uniform.
(3) squeeze：Metal pole piece is made with the plating of 18 zinc-plated screw-thread steels of φ, the raw material of kneading is put into mold, in vibration frequency
It is vibrated 5 minutes under the conditions of rate 200HZ, 1.35 ㎜ of amplitude, the air allowed in mold is fully discharged；Treat that raw material fills up cavity body of mould
Afterwards, the partial moisture in raw material is squeezed out.It being further continued for raw material is added in bucket, then vibration discharge air squeezes water removal again,
Filler extruding is iteratively repeated, obtains shaped article.
(4) pressurize：By the product of extrusion forming under 10MPa pressure pressurize 10 minutes.
(5) demoulding maintenance：Product after pressurize is placed on to the environment of 28 ± 1 DEG C of room temperature, humidity 90%, maintains 3 days, so
After dismantle mold, with covered rearing with plastic film, be put into storehouse, avoid the place of high temperature, direct sunlight.
The specification obtained with this method is the earthing module of ￠ 180*800, and weight is 20kg after testing, and surface area is
0.5m2, resistivity at room temperature is 0.24 Ω .m；10A power currents are applied 5 times to earthing module sample, every time lasting 10s,
Every 2 minor tick 30min, earthing module sample resistance change rate value is 11% before and after experiment；8/20 μ is applied to earthing module sample
S, 1KA dash current 20 times, per minor tick 1min, earthing module sample resistance change rate value is 8% before and after experiment；Mould will be grounded
Block sample carries out unbroken and disrepair phenomenon during mechanical strength test；Corrosion-resistant test result is that corrosion-resistant rate is 0.005mm/
Year.
To the equal reference standard of the performance test methods of Examples 1 to 4 earthing module《The compound ground connection of GB/T 21698-2008
Body technique condition》, and testing result also complies with the standard.
Above example shows that earthing module good conductivity, corrosion resistance are strong as made from raw material proportioning of the present invention, uses
Long lifespan；And raw material are cheap, and production is simple, easy to use, can be widely used in communications industry, electric system, building
The equipment of the industry fields such as system, AC and DC place of working, safety protection earth, social economic effect is notable.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of earthing module, the non-metallic conducting material including metal pole piece and the package metal pole piece, which is characterized in that
Calculated by mass percentage, the non-metallic conducting material by 15% graphous graphite powder, 50% natural scale graphite and
35% high-mark cement composition；
The granularity of the graphous graphite powder is less than 0.5 ㎜, and the natural scale graphite is 50 mesh screenings；
The label of the high-mark cement is 525#；
The metal pole piece is zinc-plated screw-thread steel；
The preparation method of the earthing module, comprises the following steps：
1) dispensing：Dispensing is carried out to the non-metallic conducting material according to above-mentioned composition；
2) kneading：Graphous graphite powder, natural scale graphite in dispensing is put into kneading pot, adds a certain amount of water, stirs 15-30
Minute, it adds high-mark cement and stirs 10-20 minutes, make its abundant kneading uniform；
3) squeeze：The good raw material of kneading is poured into mold and metal pole piece compression moulding；
4) pressurize：Shaped article is pressurize 8-15 minutes under 8-10MPa pressure；
5) demoulding maintenance：Product is placed on the environment of 28 ± 1 DEG C of temperature, humidity more than 80%, is maintained 2-5 days, is then demoulded, keep away
Light is placed.
2. earthing module according to claim 1, which is characterized in that in pressing steps, by effect of vibration by mold
Interior air fully excludes, and after raw material fills up cavity body of mould, the partial moisture in raw material is squeezed discharge, is further continued for toward mold
Interior addition raw material, vibration discharge air, squeezes discharge moisture, it is multiple then to repeat the process, finally obtains compression moulding again
Product.
3. earthing module according to claim 1, which is characterized in that when maintaining product, product is in humidity
It is placed in 90% environment, service time is 3 days.
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| CN201410729394.4A CN105720390B (en) | 2014-12-03 | 2014-12-03 | Earthing module and preparation method thereof |
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| CN201410729394.4A CN105720390B (en) | 2014-12-03 | 2014-12-03 | Earthing module and preparation method thereof |
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| CN105720390A CN105720390A (en) | 2016-06-29 |
| CN105720390B true CN105720390B (en) | 2018-05-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106186871A (en) * | 2016-07-14 | 2016-12-07 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of preparation method of selfreparing earthing module |
| CN107681288A (en) * | 2017-10-10 | 2018-02-09 | 武汉昱仝科技有限公司 | A kind of moisturizing earthing module and preparation method thereof that catchments suitable for arid area |
| CN110137704A (en) * | 2019-05-30 | 2019-08-16 | 武汉明心电力科技有限公司 | A kind of novel power transmission overhead line structures earthing pole material |
| CN112079637B (en) * | 2020-09-10 | 2022-06-07 | 大连法伏安电器有限公司 | Composite grounding module and preparation method thereof |
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| CN1472750A (en) * | 2002-08-01 | 2004-02-04 | 寇承平 | Physical grounding resistance reducing agent |
| CN102492202A (en) * | 2011-12-02 | 2012-06-13 | 北京国电科源电气有限公司 | Intumescent grounding reinforcing agent and preparation method |
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