CN201196976Y - Anti-corrosion earth electrode - Google Patents
Anti-corrosion earth electrode Download PDFInfo
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- CN201196976Y CN201196976Y CNU200820067181XU CN200820067181U CN201196976Y CN 201196976 Y CN201196976 Y CN 201196976Y CN U200820067181X U CNU200820067181X U CN U200820067181XU CN 200820067181 U CN200820067181 U CN 200820067181U CN 201196976 Y CN201196976 Y CN 201196976Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Prevention Of Electric Corrosion (AREA)
Abstract
Description
技术领域 technical field
本实用新型涉及的是一种接地装置，特别是一种自身具有良好防腐蚀性能的接地极。The utility model relates to a grounding device, in particular to a grounding electrode with good anti-corrosion performance.
背景技术 Background technique
为了工作和安全的需要，在电力、通信、铁路、广电、石化等系统及智能建筑物、弹药仓库等建筑物需要设置大量接地极，接地极所用的材料主要有铜和钢。由于铜合金具有较好的耐腐蚀性能，是较为理想的接地材料，但铜被腐蚀以后会积留在水资源土壤中，铜属于微毒重金属，国内外对水资源土壤中铜的含量都有严格的控制，并且我国缺少铜资源，将大量的铜接地极埋入地下会造成资源浪费；还有，铜的电解电位较高，会对附近的钢构筑物产生化学腐蚀。因此，在我国铜接地极未被广泛使用。钢铁接地极由于价格低廉，在我国被大量使用，但由于钢铁在土壤中自身抗腐蚀能力不强，消耗量大，使用寿命短，容易出现接地因腐蚀断裂而造成事故。现在，为了延长变电站等大型地网的使用寿命，不得已投入大量的经费进行阴极保护。In order to meet the needs of work and safety, a large number of grounding electrodes need to be installed in power, communication, railway, radio and television, petrochemical and other systems, intelligent buildings, ammunition warehouses and other buildings. The materials used for grounding electrodes are mainly copper and steel. Because copper alloy has good corrosion resistance, it is an ideal grounding material. However, after copper is corroded, it will accumulate in the soil of water resources. Copper is a slightly toxic heavy metal. Strict control, and our country lacks copper resources, burying a large number of copper ground electrodes underground will cause waste of resources; in addition, copper has a high electrolytic potential, which will cause chemical corrosion to nearby steel structures. Therefore, copper grounding electrodes are not widely used in my country. Iron and steel grounding electrodes are widely used in my country due to their low price. However, due to the weak corrosion resistance of steel in the soil, the consumption is large and the service life is short, it is prone to accidents caused by corrosion and fracture of the ground. Now, in order to prolong the service life of large-scale ground grids such as substations, a lot of money has to be invested in cathodic protection.
为了解决目前上述两种接地极存在的技术缺陷，接地极自身必须具有较好的抗腐蚀性能，并能满足直流、工频接地和防雷接地的基本要求，能够承载较大的故障电流及雷电电流，并将这些电流导入大地。In order to solve the technical defects of the above two grounding electrodes, the grounding electrode itself must have good corrosion resistance, meet the basic requirements of DC, power frequency grounding and lightning protection grounding, and be able to carry large fault currents and lightning currents, and conduct these currents into the ground.
中国专利文献“电力系统接地网用的纳米碳防腐导电涂料”(专利号为03125237.0)，提出用纳米碳和环氧漆酚树脂对地网进行高压喷涂，形成防腐层，保护金属接地极，但没有说明其在故障电流及雷电电流的承载能力。中国专利文献“防腐接地装置”(专利号为03214327.3)，提出施接地体的四周设置膨润土，利用湿润的膨润土保护接地体。Chinese patent document "the nano-carbon anti-corrosion conductive paint that power system ground grid is used " (patent No. is 03125237.0), proposes to carry out high-voltage spraying to ground grid with nano-carbon and epoxy urushiol resin, forms anti-corrosion layer, protects metal ground electrode, but There is no description of its carrying capacity in fault current and lightning current. The Chinese patent document "anticorrosion grounding device" (patent No. 03214327.3) proposes that bentonite is arranged around the grounding body, and the moistened bentonite is used to protect the grounding body.
发明内容 Contents of the invention
本实用新型所要解决的技术问题是：为解决铜、钢铁等材质的接地极在使用过程中存在的不足，提供一种新型防腐接地极，该接地极不仅具有良好的导电性和防腐性能，而且可以耐酸、碱、盐及电化学腐蚀。The technical problem to be solved by the utility model is to provide a new type of anti-corrosion grounding electrode in order to solve the deficiencies in the use of grounding electrodes made of copper, steel and other materials. The grounding electrode not only has good conductivity and anti-corrosion performance, but also It can resist acid, alkali, salt and electrochemical corrosion.
本实用新型解决其技术问题采用的技术方案是：由金属导体和包覆在该金属导体外部的导电高分子材料防腐层组成，其中，导电高分子材料防腐层的截面形状呈“梅花形”，具有3～36个光滑的、圆弧状的棱。The technical scheme adopted by the utility model to solve the technical problem is: it is composed of a metal conductor and a conductive polymer material anticorrosion layer coated on the outside of the metal conductor, wherein the cross-sectional shape of the conductive polymer material anticorrosion layer is "plum-shaped", With 3 to 36 smooth, arc-shaped ribs.
本实用新型提供的防腐接地极，与现有技术相比具有以下的主要优点：Compared with the prior art, the anti-corrosion ground electrode provided by the utility model has the following main advantages:
1.“梅花形”的外形设计，在相同的截面的情况下，它比圆形具有更大的周长，因此，这种外形增大了土壤与接地极的接触面积，有利于降低接地电阻；同时，增加了防腐层的强度，使得防腐层具有更好得机械性能。1. The "quincunx" shape design has a larger circumference than a circle under the same cross-section. Therefore, this shape increases the contact area between the soil and the grounding electrode, which is conducive to reducing the grounding resistance ; At the same time, the strength of the anti-corrosion layer is increased, so that the anti-corrosion layer has better mechanical properties.
2.由于导电高分子材料防腐层有良好的耐酸碱性能，不易腐蚀，因此利用该导电高分子材料防腐层将金属导体包覆，可将金属导体与周围的环境隔绝，使金属导体基本不腐蚀，从而减少了地网中金属的使用量和延长地网的使用寿命。也不需要外加阴极保护保护地网。2. Since the anticorrosion layer of conductive polymer material has good acid and alkali resistance and is not easy to corrode, the metal conductor is covered with the anticorrosion layer of conductive polymer material, which can isolate the metal conductor from the surrounding environment and make the metal conductor basically inert. Corrosion, thereby reducing the amount of metal used in the ground grid and prolonging the service life of the ground grid. There is no need for an external cathodic protection grid.
3.由于导电高分子材料防腐层能够承受0.1～100kA/cm2雷电浪涌(8/20μs波形)电流或0.1～50A/cm2短时(0.6s)工频故障电流，因此能够满足各种功能接地的需求。3. Since the conductive polymer material anticorrosion layer can withstand 0.1-100kA/cm 2 lightning surge (8/20μs waveform) current or 0.1-50A/cm 2 short-time (0.6s) power frequency fault current, it can meet various Functional grounding requirements.
4.本接地极接入普通碳钢地网时，对地网的电偶电流比铜接地极小1～2个数量级。本接地极用于石油石化钢质管道及站场时对阴保系统的影响小。可用于管道保护装置的屏蔽地线，对于过电压有屏蔽作用，并对其收集电流。4. When the ground electrode is connected to the ordinary carbon steel ground grid, the galvanic current to the ground grid is 1 to 2 orders of magnitude smaller than that of the copper ground. When the ground electrode is used in petroleum and petrochemical steel pipelines and stations, it has little impact on the cathodic protection system. It can be used in the shielding ground wire of the pipeline protection device, which has a shielding effect on the overvoltage and collects the current on it.
附图说明 Description of drawings
图1为金属绞线外部包覆导电高分子材料防腐层的防腐接地极的截面放大示意图。Fig. 1 is an enlarged schematic cross-sectional view of an anti-corrosion ground electrode coated with an anti-corrosion layer of a conductive polymer material on the outside of a metal stranded wire.
图2为金属绞线外部包覆导电高分子材料防腐层的防腐接地极的结构图。Fig. 2 is a structural diagram of an anti-corrosion grounding electrode coated with a conductive polymer material anti-corrosion layer on the outside of the metal stranded wire.
图3为管状金属导体外部包覆导电高分子材料防腐层的防腐接地极的截面放大示意图。Fig. 3 is an enlarged schematic cross-sectional view of an anti-corrosion grounding electrode with a tubular metal conductor covered with an anti-corrosion layer of a conductive polymer material.
图中：1.金属导体；2.导电高分子材料防腐层。In the figure: 1. Metal conductor; 2. Anticorrosion layer of conductive polymer material.
具体实施方式 Detailed ways
本实用新型提供的防腐接地极，其结构如图1、图2和图3所示：由金属导体1和导电高分子材料防腐层2组成，其中，导电高分子材料防腐层2包覆在金属导体1的外部，并且该导电高分子材料防腐层的截面形状呈花瓣形状。The anti-corrosion ground electrode provided by the utility model has a structure as shown in Figure 1, Figure 2 and Figure 3: it is composed of a metal conductor 1 and a conductive polymer material
上述金属导体1可以采用金属绞线(见图1)，例如铜绞线、铝绞线、钢绞线中的一种；也可以采用管状金属导体，例如钢管、铜管、铝管中的一种(见图3)；也可以采用带状金属导体，例如扁钢、铜排、铝排中的一种。Above-mentioned metal conductor 1 can adopt metal stranded wire (see Fig. 1), such as a kind of in copper stranded wire, aluminum stranded wire, steel stranded wire; Can also adopt tubular metal conductor, such as a kind of in steel pipe, copper pipe, aluminum species (see Figure 3); strip-shaped metal conductors can also be used, such as one of flat steel, copper row, and aluminum row.
上述导电高分子材料防腐层，其外形如图2所示：具有3～36个光滑的、圆弧状的棱，其截面形状为“梅花形”。导电高分子材料可以是导电橡胶、导电塑料、导电树脂、导电漆、导电橡塑中的一种，或上述任意两者组合形成的复合防腐层。The shape of the conductive polymer material anticorrosion layer is shown in Figure 2: it has 3 to 36 smooth, arc-shaped ribs, and its cross-sectional shape is "quincunx". The conductive polymer material can be one of conductive rubber, conductive plastic, conductive resin, conductive paint, conductive rubber and plastic, or a composite anti-corrosion layer formed by any combination of the above two.
上述导电高分子材料防腐层，其制作是以橡胶、塑料、树脂、橡塑、漆等高分子材料为主料，导电粉末为辅料，按照一定的比例把两者混合而成，比例视需要而定。一般情况下，按照需要在100份高分子材料中添加导电粉末30～80份，制成导电橡胶、导电塑料、导电树脂、导电橡塑、导电漆。导电高分子材料防腐层的体积电阻率小于100Ω·cm。导电高分子材料在制备的过程需要根据需要添加该性剂，使导电高分子材料防腐层能够承受至少0.1～50kA/cm2雷电浪涌(8/20μs波形)电流或0.1～500A/cm2短时(0.6s)工频故障电流。The anti-corrosion layer of the above-mentioned conductive polymer material is made of polymer materials such as rubber, plastic, resin, rubber and plastic, paint, etc., and conductive powder is used as an auxiliary material. The two are mixed according to a certain ratio. The ratio depends on the need. Certainly. Generally, 30-80 parts of conductive powder is added to 100 parts of polymer materials as needed to make conductive rubber, conductive plastic, conductive resin, conductive rubber and plastic, and conductive paint. The volume resistivity of the conductive polymer anticorrosion layer is less than 100Ω·cm. During the preparation process of the conductive polymer material, the agent needs to be added as needed, so that the anti-corrosion layer of the conductive polymer material can withstand at least 0.1-50kA/cm 2 lightning surge (8/20μs waveform) current or 0.1-500A/cm 2 short hour (0.6s) power frequency fault current.
所述导电粉末可以是石墨、炭、镍、铜、银以及在其它基体上镀镍、镀铜、镀银形成的导电物质中的一种，或几种混合而成。The conductive powder can be one of graphite, carbon, nickel, copper, silver, and conductive substances formed by plating nickel, copper, and silver on other substrates, or a mixture of several types.
所述导电高分子材料防腐层，其厚度通常为0.1～20mm。The thickness of the conductive polymer material anticorrosion layer is usually 0.1-20mm.
下面结合实施例对本实用新型作进一步说明，但不限定本实用新型。Below in conjunction with embodiment the utility model is further described, but does not limit the utility model.
实施例1：金属导体1采用标称截面积为35mm2铜铰线，铜铰线的外部采用挤出硫化的方式包覆一层导电硅橡胶，共有6个圆弧状的楞，最小厚度d＝1mm，导电硅橡胶的体积电阻率2Ω·cm。Example 1: Metal conductor 1 adopts a copper hinge wire with a nominal cross-sectional area of 35mm2 , and the outside of the copper hinge wire is coated with a layer of conductive silicone rubber by extrusion vulcanization. There are 6 arc-shaped corrugations in total, and the minimum thickness is d =1mm, the volume resistivity of conductive silicone rubber is 2Ω·cm.
本例的防腐接地极能够承受至少50kA/m雷电浪涌(8/20μs波形)电流，或1kA/m短时(0.6s)工频故障电流。The anti-corrosion grounding electrode in this example can withstand at least 50kA/m lightning surge (8/20μs waveform) current, or 1kA/m short-term (0.6s) power frequency fault current.
实施例2：金属导体1采用标称截面积为35mm2铜铰线，铜铰线的外部采用挤出的方式包覆一层导电塑料，共有12个圆弧状的楞，最小厚度d＝1mm，导电硅塑料的体积电阻率0.5Ω·cm。Embodiment 2: The metal conductor 1 adopts a copper hinge wire with a nominal cross-sectional area of 35mm2 , and the outside of the copper hinge wire is coated with a layer of conductive plastic by extrusion. There are 12 arc-shaped corrugations in total, and the minimum thickness d=1mm , The volume resistivity of conductive silicon plastic is 0.5Ω·cm.
本例的防腐接地极能够承受至少50kA/m雷电浪涌(8/20μs波形)电流，或1kA/m短时(0.6s)工频故障电流。The anti-corrosion grounding electrode in this example can withstand at least 50kA/m lightning surge (8/20μs waveform) current, or 1kA/m short-term (0.6s) power frequency fault current.
实施例3：金属导体1采用直径48mm的钢管，钢管外部模压一层导电硅橡胶，最小厚度d＝2mm。导电硅橡胶的体积电阻率4Ω·cm，厚度3mm。Embodiment 3: The metal conductor 1 is a steel pipe with a diameter of 48mm, and a layer of conductive silicon rubber is molded on the outside of the steel pipe, with a minimum thickness of d=2mm. The volume resistivity of the conductive silicone rubber is 4Ω·cm, and the thickness is 3mm.
本例的防腐接地极能够承受至少150kA/m雷电浪涌(8/20μs波形)电流，或5k A/m短时(0.6s)工频故障电流。The anti-corrosion grounding electrode in this example can withstand at least 150kA/m lightning surge (8/20μs waveform) current, or 5k A/m short-term (0.6s) power frequency fault current.
本实用新型提供的防腐接地极，其在应用时，单体长度可以是0.3m～4000m，或根据需要而定。单体的形式可以是阵体，可以水平或垂直设置。并且可以根据需要由不同的单体组成接地网。The anti-corrosion grounding electrode provided by the utility model, when it is applied, the length of a single body can be 0.3m-4000m, or it can be determined according to needs. The form of the monomer can be array, which can be arranged horizontally or vertically. And the grounding grid can be composed of different monomers according to the needs.
本实用新型提供的防腐接地极，其与电缆进行连接的方法是：可通过两端的去掉导电高分子材料防腐层2后，用专用接头将金属导体1与电缆进行连接，然后用相应的材料进行防腐处理。The method for connecting the anti-corrosion grounding electrode provided by the utility model to the cable is: after removing the
本实用新型提供的防腐接地极，因其自身具有非常良好的防腐蚀性能，并能够满足直流、工频接地和防雷接地等功能性接地的要求，因此能够承载较大的故障电流及雷电电流，并将这些电流导入大地。The anti-corrosion grounding electrode provided by the utility model has very good anti-corrosion performance and can meet the requirements of functional grounding such as direct current, power frequency grounding and lightning protection grounding, so it can carry relatively large fault currents and lightning currents , and direct these currents into the ground.
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| CNU200820067181XU CN201196976Y (en) | 2008-05-15 | 2008-05-15 | Anti-corrosion earth electrode |
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| CN102394389A (en) * | 2011-06-17 | 2012-03-28 | 国网电力科学研究院武汉南瑞有限责任公司 | High ferrochrome silicon electrode for direct-current grounding electrode |
| CN102544779A (en) * | 2011-08-16 | 2012-07-04 | 湖北威达电气有限公司 | Novel anti-corrosion grounding body with cathode protection function and method for manufacturing novel anti-corrosion grounding body |
| CN102983419A (en) * | 2011-09-07 | 2013-03-20 | 崔骥 | Grounding device and grounding method |
| CN103956591A (en) * | 2014-03-25 | 2014-07-30 | 苏州雷仕达电子科技有限公司 | Star-shaped ground body of nanometer conductive anticorrosion coating |
| CN105514629A (en) * | 2016-01-28 | 2016-04-20 | 国家电网公司 | Compound ground electrode |
| CN105742837A (en) * | 2016-04-19 | 2016-07-06 | 北京先研科技有限责任公司 | Efficient discharging grounding electrode |
| CN106207509A (en) * | 2016-08-07 | 2016-12-07 | 河南瑞恒电力电气有限公司 | Substation grounding protection device |
| CN109135496A (en) * | 2018-05-25 | 2019-01-04 | 宁夏中科天际防雷研究院有限公司 | Anticorrosive lightning protection pole of a kind of environment-friendly type and preparation method thereof |
| CN109687174A (en) * | 2017-10-19 | 2019-04-26 | 未来眼世上株式会社 | Compound earth brace and its manufacturing method |
| CN111215709A (en) * | 2020-02-24 | 2020-06-02 | 广东工业大学 | Novel electrode composite electric machining device and machining method |
| CN111641096A (en) * | 2020-04-27 | 2020-09-08 | 国网辽宁省电力有限公司电力科学研究院 | Construction process of conductive polymer material grounding grid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102394389B (en) * | 2011-06-17 | 2013-09-11 | 国网电力科学研究院武汉南瑞有限责任公司 | High ferrochrome silicon electrode for direct-current grounding electrode |
| CN102394389A (en) * | 2011-06-17 | 2012-03-28 | 国网电力科学研究院武汉南瑞有限责任公司 | High ferrochrome silicon electrode for direct-current grounding electrode |
| CN102544779A (en) * | 2011-08-16 | 2012-07-04 | 湖北威达电气有限公司 | Novel anti-corrosion grounding body with cathode protection function and method for manufacturing novel anti-corrosion grounding body |
| CN102983419A (en) * | 2011-09-07 | 2013-03-20 | 崔骥 | Grounding device and grounding method |
| CN103956591A (en) * | 2014-03-25 | 2014-07-30 | 苏州雷仕达电子科技有限公司 | Star-shaped ground body of nanometer conductive anticorrosion coating |
| CN105514629B (en) * | 2016-01-28 | 2017-10-13 | 国家电网公司 | A kind of compound earthing pole |
| CN105514629A (en) * | 2016-01-28 | 2016-04-20 | 国家电网公司 | Compound ground electrode |
| CN105742837A (en) * | 2016-04-19 | 2016-07-06 | 北京先研科技有限责任公司 | Efficient discharging grounding electrode |
| CN105742837B (en) * | 2016-04-19 | 2018-07-20 | 北京先研科技有限责任公司 | Efficient discharge earthing pole |
| CN106207509A (en) * | 2016-08-07 | 2016-12-07 | 河南瑞恒电力电气有限公司 | Substation grounding protection device |
| CN109687174A (en) * | 2017-10-19 | 2019-04-26 | 未来眼世上株式会社 | Compound earth brace and its manufacturing method |
| CN109135496A (en) * | 2018-05-25 | 2019-01-04 | 宁夏中科天际防雷研究院有限公司 | Anticorrosive lightning protection pole of a kind of environment-friendly type and preparation method thereof |
| CN111215709A (en) * | 2020-02-24 | 2020-06-02 | 广东工业大学 | Novel electrode composite electric machining device and machining method |
| CN111641096A (en) * | 2020-04-27 | 2020-09-08 | 国网辽宁省电力有限公司电力科学研究院 | Construction process of conductive polymer material grounding grid |
| CN111641096B (en) * | 2020-04-27 | 2021-11-09 | 国网辽宁省电力有限公司电力科学研究院 | Construction process of conductive polymer material grounding grid |
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Assignee: Beijing Ailao Hi Tech Co. Ltd. Assignor: Wuhan Arrow Advanced Technology Co.,Ltd. Contract record no.: 2011990000629 Denomination of utility model: Heatproof antiseptic earth electrode Granted publication date: 20090218 License type: Exclusive License Record date: 20110714 |
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