CN104103334A - Novel high-efficiency anti-corrosive physical resistance reducing agent for galvanized steel grounding grid - Google Patents
Novel high-efficiency anti-corrosive physical resistance reducing agent for galvanized steel grounding grid Download PDFInfo
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Abstract
本发明涉及电力领域中常用的物理降阻材料的技术领域，尤其涉及一种新型高效防腐蚀镀锌钢接地网物理降阻剂。本发明包括以下成份按重量百分比构成：保水剂：石墨粉：石墨纤维粉：无机缓蚀剂=38%～70%：28%～60%：0.5%～2%：0.1%～2%。本发明具有较好的保水性，在新型降阻剂中能保持降阻剂中的水含量，与周围土壤结合紧密，降低与周围土壤的接触电阻，并且可以减缓接地材料的腐蚀。本发明还以增加降阻剂中导电物的导电通路，进一步增强降阻剂的导电性能，降低接地材料的腐蚀，无毒无害，无污染，对接地材料具有一定的缓蚀作用。适合作为电力系统输变电站、用电站场及其他大型用电设备接地的物理型降阻材料。The invention relates to the technical field of physical resistance-reducing materials commonly used in the electric power field, in particular to a novel high-efficiency anti-corrosion galvanized steel grounding grid physical resistance-reducing agent. The present invention comprises the following components by weight percentage: water retaining agent: graphite powder: graphite fiber powder: inorganic corrosion inhibitor=38%-70%: 28%-60%: 0.5%-2%: 0.1%-2%. The invention has better water retention, can maintain the water content in the new drag reducing agent, closely combines with the surrounding soil, reduces the contact resistance with the surrounding soil, and can slow down the corrosion of grounding materials. The invention further enhances the conductive performance of the resistance reducing agent by increasing the conductive path of the conductive material in the resistance reducing agent, reduces the corrosion of the grounding material, is non-toxic, harmless, and pollution-free, and has a certain corrosion inhibition effect on the grounding material. It is suitable as a physical resistance-reducing material for grounding of power system transmission and transformation substations, power stations and other large-scale electrical equipment.
Description
技术领域 technical field
本发明涉及电力领域中常用的物理降阻材料的技术领域，尤其涉及一种新型高效防腐蚀镀锌钢接地网物理降阻剂。具体涉及一种应用于电力系统镀锌钢接地网的高效防腐蚀物理降阻剂，是一种针对电力系统输变电站、用电站场及其他大型用电设备接地的物理型降阻材料。 The invention relates to the technical field of physical resistance-reducing materials commonly used in the electric power field, in particular to a novel high-efficiency anti-corrosion galvanized steel grounding grid physical resistance-reducing agent. Specifically, it relates to a high-efficiency anti-corrosion physical resistance-reducing agent applied to galvanized steel grounding grids in power systems, and is a physical resistance-reducing material for grounding of power system transmission and transformation stations, power stations and other large-scale electrical equipment.
背景技术 Background technique
接地是保障电力、通信、微电子等设备、建筑物及人身安全的重要手段。可靠的接地应具有较低的接地电阻值。通常接地网是由一些水平或垂直的金属或非金属电极构成的封闭或开放网络组成。接地装置的接地电阻与所在区域的土壤电阻率成正比，与接地网总面积的平方根成反比。因此，在不改变接地网土壤环境的情况下靠增加接地网面积是不经济且不现实的。为在高电阻率地区有效降低接地网接地电阻，从上世纪70年代开始国内外开始研制各种类型的降阻剂，通过扩大接地体接触面积、改善周围土壤电阻率及增大散流面积等作用实现不增加接地网面积接地电阻达标的效果。 Grounding is an important means to ensure the safety of electric power, communication, microelectronics and other equipment, buildings and personal safety. A reliable ground should have a low ground resistance value. Usually the ground grid is composed of a closed or open network composed of some horizontal or vertical metal or non-metal electrodes. The grounding resistance of the grounding device is proportional to the soil resistivity in the area and inversely proportional to the square root of the total area of the grounding grid. Therefore, it is uneconomical and unrealistic to increase the area of the grounding grid without changing the soil environment of the grounding grid. In order to effectively reduce the grounding resistance of the grounding grid in areas with high resistivity, various types of resistance reducing agents have been developed at home and abroad since the 1970s, by expanding the contact area of the grounding body, improving the resistivity of the surrounding soil, and increasing the area of diffusion, etc. The function realizes the effect that the grounding resistance meets the standard without increasing the area of the grounding grid.
目前，降阻剂品种繁多，大多都属于化学降阻剂类型。主要以Cl-、SO4 2-、NO3 -或其他电解质盐类为导电物，以树脂、水泥、硅酸盐等为凝胶物。化学降阻剂的导电机理与土壤相同，只有在存在水的时候才会电离出离子。化学降阻剂这种导电机理会带来对附近土壤存在较强污染、高浓度离子严重加速接地材料腐蚀、导电离子随雨水流失导致降阻效果逐渐下降等缺点，无法满足日益提高的接地性能和环境保护要求。 At present, there are many kinds of drag reducing agents, most of which are chemical drag reducing agents. Mainly use Cl - , SO 4 2- , NO 3 - or other electrolyte salts as conductors, and resin, cement, silicate, etc. as gels. The conductive mechanism of the chemical drag reducer is the same as that of the soil, and only when there is water, it will ionize and release ions. The conductive mechanism of chemical resistance reducing agent will bring strong pollution to the nearby soil, high concentration ions will seriously accelerate the corrosion of grounding materials, and the conductive ions will gradually decrease the resistance reducing effect due to the loss of rainwater, which cannot meet the increasing grounding performance and Environmental protection requirements.
发明内容 Contents of the invention
为解决上述现有技术中存在的问题，本发明提供了一种新型高效防腐蚀镀锌钢接地网物理降阻剂。目的是实现镀锌钢接地材料的高效降阻与防腐蚀。 In order to solve the above-mentioned problems in the prior art, the present invention provides a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent. The purpose is to realize efficient resistance reduction and corrosion prevention of galvanized steel grounding materials.
本发明是通过以下技术方案实现的： The present invention is achieved through the following technical solutions:
一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份按重量百分比构成：保水剂：石墨粉：石墨纤维粉：无机缓蚀剂=38%～70%：28%～60%：0.5%～2%：0.1%～2%。 A new type of high-efficiency anti-corrosion galvanized steel grounding grid physical resistance reducing agent, including the following components in weight percentage: water retention agent: graphite powder: graphite fiber powder: inorganic corrosion inhibitor = 38% ~ 70%: 28% ~ 60% : 0.5% to 2%: 0.1% to 2%.
所述的保水剂为钠基膨润土。 The water retaining agent is sodium bentonite.
所述的无机缓蚀剂为水性缓蚀剂。 The inorganic corrosion inhibitor is an aqueous corrosion inhibitor.
所述的石墨纤维粉可以用碳纤维粉来代替。 Described graphite fiber powder can be replaced with carbon fiber powder.
所述的石墨粉，可以由50%的天然石墨粉与50%的电极石墨粉混合物替代。 Described graphite powder can be replaced by the mixture of 50% natural graphite powder and 50% electrode graphite powder.
所述的一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成：钠基膨润土：石墨粉：石墨纤维粉：水性缓蚀剂=50%：46%： 2%：2%。 The new high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent includes the following components, which are composed by weight percentage: sodium bentonite: graphite powder: graphite fiber powder: water-based corrosion inhibitor = 50%: 46%: 2%: 2%.
所述的一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成：钠基膨润土：石墨粉：碳纤维粉：水性缓蚀剂=40%：57%：1%：2%。 The new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent includes the following components, which are composed by weight percentage: sodium bentonite: graphite powder: carbon fiber powder: water-based corrosion inhibitor = 40%: 57%: 1 %:2%.
所述的一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，钠基膨润土：石墨粉：碳纤维粉：水性缓蚀剂=60%：36%：2%：2%。 The new high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent includes the following ingredients, sodium bentonite: graphite powder: carbon fiber powder: water-based corrosion inhibitor = 60%: 36%: 2%: 2%.
所述的一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，钠基膨润土：石墨粉：碳纤维粉：水性缓蚀剂= 70%：28%：0.5%，：1.5%。 Described a kind of novel high-efficiency anti-corrosion galvanized steel ground grid physical drag reducing agent, comprises following composition, sodium bentonite: graphite powder: carbon fiber powder: water-based corrosion inhibitor=70%: 28%: 0.5%,: 1.5% .
所述的一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，钠基膨润土：天然石墨粉与电极石墨粉的混合物：石墨纤维粉：水性缓蚀剂= 68%：30%：1.9%：0.1%。 Described a kind of novel high-efficiency anti-corrosion galvanized steel ground grid physical drag-reducing agent, comprises following composition, sodium bentonite: the mixture of natural graphite powder and electrode graphite powder: graphite fiber powder: water-based corrosion inhibitor=68%: 30 %: 1.9%: 0.1%.
本发明的优点及有益效果是： Advantage of the present invention and beneficial effect are:
本发明具有较好的保水性，在新型降阻剂中能保持降阻剂中的水含量，与周围土壤结合紧密，降低与周围土壤的接触电阻，并且可以减缓接地材料的腐蚀。由于添加有一定量的碳纤维粉，碳纤维粉较大的长径比在降阻剂中形成一定的空间网络，增加降阻剂中导电物的导电通路，进一步增强降阻剂的导电性能。又由于本发明中添加一定量的无机缓蚀剂，因此可以降低接地材料的腐蚀。并且本发明产品无毒无害，不会产生环境污染问题，且对接地材料具有一定的缓蚀作用。适合作为电力系统输变电站、用电站场及其他大型用电设备接地的物理型降阻材料。 The invention has better water retention, can maintain the water content in the new drag reducing agent, closely combines with the surrounding soil, reduces the contact resistance with the surrounding soil, and can slow down the corrosion of grounding materials. Due to the addition of a certain amount of carbon fiber powder, the large aspect ratio of the carbon fiber powder forms a certain space network in the drag reducer, which increases the conductive path of the conductive material in the drag reducer, and further enhances the conductivity of the drag reducer. And because a certain amount of inorganic corrosion inhibitor is added in the present invention, the corrosion of grounding materials can be reduced. Moreover, the product of the invention is non-toxic and harmless, does not cause environmental pollution problems, and has a certain corrosion inhibition effect on grounding materials. It is suitable as a physical resistance-reducing material for grounding of power system transmission and transformation substations, power stations and other large-scale electrical equipment.
具体实施方式 Detailed ways
本发明是一种新型高效防腐蚀镀锌钢接地网物理降阻剂，其按照以下配方实现镀锌钢接地材料的高效降阻与防腐蚀， 具体包括以下成份按重量百分比构成： The present invention is a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent, which realizes high-efficiency resistance reduction and anti-corrosion of galvanized steel grounding materials according to the following formula, and specifically includes the following components in weight percentage:
保水剂：石墨粉：石墨纤维粉：无机缓蚀剂=38%～70%：28%～60%：0.5%～2%： 0.1%～2%。 Water retaining agent: Graphite powder: Graphite fiber powder: Inorganic corrosion inhibitor=38%~70%: 28%~60%: 0.5%~2%: 0.1%~2%.
所述的保水剂为钠基膨润土。所述的无机缓蚀剂为水性缓蚀剂。所述的石墨纤维粉可以用碳纤维粉来代替。 The water retaining agent is sodium bentonite. The inorganic corrosion inhibitor is an aqueous corrosion inhibitor. Described graphite fiber powder can be replaced with carbon fiber powder.
本发明中所述的导电物质主料石墨粉还可以采用50%的天然石墨粉与50%的电极石墨粉的混合物来代替，这样可以使本发明产品降低成本。 The main material graphite powder of conductive substance described in the present invention can also be replaced by a mixture of 50% natural graphite powder and 50% electrode graphite powder, which can reduce the cost of the product of the present invention.
实施例1： Example 1:
本发明是一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成： The present invention is a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent, which includes the following components, which are composed by weight percentage:
钠基膨润土：石墨粉：石墨纤维粉：水性缓蚀剂=50%：46%： 2%：2%。 Sodium bentonite: graphite powder: graphite fiber powder: water-based corrosion inhibitor = 50%: 46%: 2%: 2%.
将上述各组分混合，搅拌均匀，形成黑色粉末，即可制备本发明的高效物理降阻剂。根据《DL_T_380-2010_接地降阻材料技术条件》标准，此实例室温电阻率达到1.5Ωm以下。 The above-mentioned components are mixed and stirred evenly to form a black powder, and then the high-efficiency physical drag reducing agent of the present invention can be prepared. According to the "DL_T_380-2010_Technical Conditions for Grounding Resistance Reducing Materials" standard, the room temperature resistivity of this example is below 1.5Ωm.
本发明中保水剂选用钠基膨润土，钠基膨润土的分子式为Nax(H2O)4 (Al2-xMg0.83) Si4O10) (OH)2，具有较好的保水性，可以吸收自身重量8～20%的水，在新型降阻剂中能保持降阻剂中的水含量，与周围土壤结合紧密，降低与周围土壤的接触电阻。并且钠基膨润土具有较高的pH值，可以减缓接地材料的腐蚀。在新型降阻剂中钠基膨润土的重量百分比在40%～70%； In the present invention, sodium bentonite is selected as the water retaining agent. The molecular formula of sodium bentonite is Na x (H 2 O) 4 (Al 2 -xMg 0.83 ) Si 4 O 10 ) (OH) 2 , which has good water retention and can absorb Water with 8-20% of its own weight can maintain the water content in the new drag-reducing agent, combine closely with the surrounding soil, and reduce the contact resistance with the surrounding soil. And sodium bentonite has a higher pH value, which can slow down the corrosion of grounding materials. The weight percentage of sodium bentonite in the new drag reducer is 40% to 70%;
本发明中的导电连接物选用石墨纤维粉，本发明中的无机缓蚀剂选用水性缓蚀剂。本发明中的无机缓蚀剂，可以降低接地材料的腐蚀。 Graphite fiber powder is selected as the conductive connector in the present invention, and water-based corrosion inhibitor is selected as the inorganic corrosion inhibitor in the present invention. The inorganic corrosion inhibitor in the present invention can reduce the corrosion of grounding materials.
实施例2： Example 2:
本发明是一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成： The present invention is a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent, which includes the following components, which are composed by weight percentage:
钠基膨润土：石墨粉：碳纤维粉：水性缓蚀剂=40%：57%：1%：2%。 Sodium bentonite: graphite powder: carbon fiber powder: water-based corrosion inhibitor = 40%: 57%: 1%: 2%.
本发明中的碳纤维粉，由于其较大的长径比在降阻剂中形成一定的空间网络，增加降阻剂中导电物的导电通路，进一步增强降阻剂的导电性能。 The carbon fiber powder in the present invention forms a certain space network in the drag reducing agent due to its large aspect ratio, increases the conductive path of the conductive material in the drag reducing agent, and further enhances the conductivity of the drag reducing agent.
将上述各组分混合，搅拌均匀，形成黑色粉末混合物，即可制备本发明的高效物理降阻剂。根据《DL_T_380-2010_接地降阻材料技术条件》标准，此实例室温电阻率达到1.2Ωm以下。 The above-mentioned components are mixed and stirred evenly to form a black powder mixture, and then the high-efficiency physical drag reducing agent of the present invention can be prepared. According to the "DL_T_380-2010_Technical Conditions for Grounding Resistance Reducing Materials" standard, the room temperature resistivity of this example is below 1.2Ωm.
实施例3： Example 3:
本发明是一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成： The present invention is a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent, which includes the following components, which are composed by weight percentage:
钠基膨润土：石墨粉：碳纤维粉：水性缓蚀剂=60%：36%：2%：2%。 Sodium bentonite: graphite powder: carbon fiber powder: water-based corrosion inhibitor = 60%: 36%: 2%: 2%.
将上述组分混合，搅拌均匀，形成黑色粉末混合物，即可制备本发明的高效物理降阻剂。根据《DL_T_380-2010_接地降阻材料技术条件》标准，此实例室温电阻率达到1.8Ωm以下。 The above-mentioned components are mixed and stirred evenly to form a black powder mixture, and then the high-efficiency physical drag reducing agent of the present invention can be prepared. According to the "DL_T_380-2010_Technical Conditions for Grounding Resistance Reducing Materials" standard, the room temperature resistivity of this example is below 1.8Ωm.
实施例4： Example 4:
本发明是一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成： The present invention is a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent, which includes the following components, which are composed by weight percentage:
钠基膨润土：石墨粉：碳纤维粉：水性缓蚀剂=38%： 60%： 1.5%： 0.5%。 Sodium bentonite: graphite powder: carbon fiber powder: water-based corrosion inhibitor=38%: 60%: 1.5%: 0.5%.
将上述组分混合，搅拌均匀，形成黑色粉末混合物，即可制备本发明的高效物理降阻剂。根据《DL_T_380-2010_接地降阻材料技术条件》标准，此实例室温电阻率达到1.8Ωm以下。 The above-mentioned components are mixed and stirred evenly to form a black powder mixture, and then the high-efficiency physical drag reducing agent of the present invention can be prepared. According to the "DL_T_380-2010_Technical Conditions for Grounding Resistance Reducing Materials" standard, the room temperature resistivity of this example is below 1.8Ωm.
实施例5： Example 5:
本发明是一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成： The present invention is a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent, which includes the following components, which are composed by weight percentage:
钠基膨润土：石墨粉：碳纤维粉：水性缓蚀剂= 70%：28%：0.5%，：1.5%。 Sodium bentonite: graphite powder: carbon fiber powder: water-based corrosion inhibitor = 70%: 28%: 0.5%, : 1.5%.
将上述组分混合，搅拌均匀，形成黑色粉末混合物，即可制备本发明的高效物理降阻剂。根据《DL_T_380-2010_接地降阻材料技术条件》标准，此实例室温电阻率达到1.8Ωm以下。 The above-mentioned components are mixed and stirred evenly to form a black powder mixture, and then the high-efficiency physical drag reducing agent of the present invention can be prepared. According to the "DL_T_380-2010_Technical Conditions for Grounding Resistance Reducing Materials" standard, the room temperature resistivity of this example is below 1.8Ωm.
实施例6： Embodiment 6:
本发明是一种新型高效防腐蚀镀锌钢接地网物理降阻剂，包括以下成份，按重量百分比构成： The present invention is a new type of high-efficiency anti-corrosion galvanized steel ground grid physical resistance reducing agent, which includes the following components, which are composed by weight percentage:
钠基膨润土：天然石墨粉与电极石墨粉的混合物：石墨纤维粉：水性缓蚀剂= 68%：30%：1.9%：0.1%。 Sodium bentonite: mixture of natural graphite powder and electrode graphite powder: graphite fiber powder: water-based corrosion inhibitor = 68%: 30%: 1.9%: 0.1%.
本发明中所述的导电物质主料采用50%的天然石墨粉与50%的电极石墨粉的混合物，这样可以使本发明产品降低成本。 The main material of the conductive substance described in the present invention is a mixture of 50% natural graphite powder and 50% electrode graphite powder, which can reduce the cost of the product of the present invention.
将上述组分混合，搅拌均匀，形成黑色粉末混合物，即可制备本发明的高效物理降阻剂。根据《DL_T_380-2010_接地降阻材料技术条件》标准，此实例室温电阻率达到1.8Ωm以下。 The above-mentioned components are mixed and stirred evenly to form a black powder mixture, and then the high-efficiency physical drag reducing agent of the present invention can be prepared. According to the "DL_T_380-2010_Technical Conditions for Grounding Resistance Reducing Materials" standard, the room temperature resistivity of this example is below 1.8Ωm.
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| CN105070348A (en) * | 2015-07-15 | 2015-11-18 | 湖北威达电气有限公司 | Compound grounding resistance-reducing powder |
| CN105428840A (en) * | 2015-12-23 | 2016-03-23 | 苏州九云丰电子科技有限公司 | Electrolytic ion type grounding module |
| CN105428839A (en) * | 2015-12-23 | 2016-03-23 | 苏州九云丰电子科技有限公司 | Electrolytic ion grounding electrode |
| CN105552592A (en) * | 2015-12-23 | 2016-05-04 | 苏州九云丰电子科技有限公司 | High-efficiency low-resistance grounding module |
| CN105777051A (en) * | 2016-03-04 | 2016-07-20 | 西安卓力科技发展有限公司 | Petroleum coke applicable to earthing engineering grouting and preparation method |
| CN105957577A (en) * | 2016-05-05 | 2016-09-21 | 国网江西省电力科学研究院 | Grounding calcium bentonite-based resistance-reducing agent |
| CN106098142A (en) * | 2016-08-05 | 2016-11-09 | 海南中海电力工程有限公司 | A kind of physics friction reducer for voiceless demolition |
| CN106683745A (en) * | 2016-12-16 | 2017-05-17 | 北京先研科技有限责任公司 | Resistance changing agent for changing soil resistance |
| CN107161997A (en) * | 2017-05-25 | 2017-09-15 | 云南电力试验研究院(集团)有限公司 | A kind of carbon fibre-reinforced graphite grounding grids material and preparation method thereof |
| CN112688093A (en) * | 2020-12-24 | 2021-04-20 | 湖北省雷博盾科技有限公司 | Graphene modified grounding resistance-reducing module and processing method |
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| CN105070348A (en) * | 2015-07-15 | 2015-11-18 | 湖北威达电气有限公司 | Compound grounding resistance-reducing powder |
| CN105428840A (en) * | 2015-12-23 | 2016-03-23 | 苏州九云丰电子科技有限公司 | Electrolytic ion type grounding module |
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| CN105957577A (en) * | 2016-05-05 | 2016-09-21 | 国网江西省电力科学研究院 | Grounding calcium bentonite-based resistance-reducing agent |
| CN106098142A (en) * | 2016-08-05 | 2016-11-09 | 海南中海电力工程有限公司 | A kind of physics friction reducer for voiceless demolition |
| CN106683745A (en) * | 2016-12-16 | 2017-05-17 | 北京先研科技有限责任公司 | Resistance changing agent for changing soil resistance |
| CN107161997A (en) * | 2017-05-25 | 2017-09-15 | 云南电力试验研究院(集团)有限公司 | A kind of carbon fibre-reinforced graphite grounding grids material and preparation method thereof |
| CN112688093A (en) * | 2020-12-24 | 2021-04-20 | 湖北省雷博盾科技有限公司 | Graphene modified grounding resistance-reducing module and processing method |
| CN112688093B (en) * | 2020-12-24 | 2021-08-17 | 湖北省雷博盾科技有限公司 | Graphene modified grounding resistance-reducing module and processing method |
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