CN201946767U - Current drainage grounding device - Google Patents
Current drainage grounding device Download PDFInfo
- Publication number
- CN201946767U CN201946767U CN2010206799797U CN201020679979U CN201946767U CN 201946767 U CN201946767 U CN 201946767U CN 2010206799797 U CN2010206799797 U CN 2010206799797U CN 201020679979 U CN201020679979 U CN 201020679979U CN 201946767 U CN201946767 U CN 201946767U
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- element group
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- current drainage
- earthing device
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Abstract
The utility model discloses a current drainage grounding device. One end of an electric element group is connected with a structure and the other end of the electric element group is connected with a grounding body through a metal connecting wire. The electric element group comprises an element group A, an element group B and an element group C. The element group A is formed in a mode that a nonpolar capacitor is connected with a resistor in parallel, two polar capacitors are also connected in parallel, and then the parallel nonpolar capacitor and resistor and the parallel capacitors are connected in series. The element group B is formed in a mode that two diodes A are connected in series and then one diode B is reversely connected with the two diodes A in parallel; the element group C is formed in a mode that a piezoresistor is connected in series with an inductor and then is connected in parallel with a surge protector; and the element group A, the element group B and the element group C are connected in parallel. The current drainage grounding device not only cannot consume a cathode protection current for the metal structure with the cathode protection, but also can provide the cathode protection, so that the corrosion on the metal structure is slowed down, the influence of various AC (Alternating Current) and DC (direct current) stray currents on the metal structure is eliminated and the drainage of the harmful current is further ensured.
Description
Technical field
The utility model relates to a kind of earthing device, specifically is the lightning current of releasing that is applied to structures, the current drainage earthing device that reaches the interference of elimination AC and DC stray electrical current.
Background technology
Long-distance transport pipes, rail, buried metal structures and electronic equipment etc.; owing to be parallel to ultra-high-tension power transmission line, transformer station, electric railway, lightning current interference range and cathodic protection anode groundbed etc.; so be subjected to the interference of electromagnetic field easily; cause the buried metal structures to produce AC and DC stray electrical current and induction lightening stream; thereby structures and electronic equipment are formed electrochemical corrosion and surge attack etc.; facilities and equipment is caused damage and corrosion, even security incidents such as life danger and environment blast.
The general employing of present earthing device directly is connected with structures, and its effect is that any electric current of all structures of flowing through is all released in the soil; Its result causes signal code, the protective current that should not release and transmits useful electric current etc. together running off.Taked all ways in the past,, made electrolytic grounding cell etc., and, but still can impact installations and facilities though these devices can solve part or the single stray electrical current and the problem of lightning current as adding SPD separately, acquiring the equipotential xegregating unit.
The utility model content
The utility model has overcome the deficiencies in the prior art, and a kind of current drainage earthing device is provided, and this device can carry out the selectivity forced drainage to deleterious currents such as stray electrical current and lightning currents and release.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of current drainage earthing device, comprise electric elements group, connecting line and earth electrode, wherein electric elements group one end links to each other with structures, the other end links to each other with earth electrode by the metal connecting line, described electric elements group comprises three parts: element group A, element group B and element group C, and element group A is made up of polar capacitor, a polarity free capacitor and a resistance by two, and wherein two have polar capacitor to be connected in parallel, after polarity free capacitor and the resistance parallel connection, there is polar capacitor to connect with two again; Element group B is connected a diode B after being connected by two diode A again with two diode A reverse parallel connections; Element group C with after inductance is connected in series, is connected in parallel piezo-resistance again with Surge Protector; Be connected in parallel between element group A, element group B, the element group C.
Further be:
Described electric elements are assembled in the casing, and described casing is metal cabinet or nonmetal casing.
Described earth electrode is made up of one or more horizontal grounding utmost points.
Described earth electrode is made up of one or more vertical grounding electrodes.
Described earth electrode is made up of one or more horizontal grounding utmost points and vertical grounding electrode.
The earth resistance of described current drainage earthing device is less than the earth resistance of the structures of need current drainage.
Compared with prior art, the beneficial effects of the utility model are:
1, because of the clamper function is arranged in the circuit in the electric elements group, make whole current drainage earthing device to metal structures that cathodic protection is arranged not loss cathodic protection current not only, cathodic protection can also be provided, slow down the corrosion of metal structures.
2, the energy with devices such as diode, SPD, electric capacity, resistance cooperates, and has got rid of the influence of various alternating current-direct current stray electrical currents to the metal structures.
3, the current drainage earthing device of low earth resistance composition has formed stray electrical current and has flowed to low-resistance circuit loop by high resistance, has further ensured the drainage of deleterious current.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is the utility model electric elements group circuit diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated.
As shown in Figure 1, 2, a kind of current drainage earthing device, comprise electric elements group 1, metal connecting line 2 and earth electrode, wherein electric elements group 1 one ends link to each other with structures, the other end links to each other with earth electrode by metal connecting line 2, electric elements group 1 comprises three parts: element group A, element group B and element group C, element group A is made up of polar capacitor 19, a polarity free capacitor 17 and a resistance 11 by two, wherein two have polar capacitor 19 to be connected in parallel, after polarity free capacitor 17 and resistance 11 parallel connections, there is polar capacitor 19 to connect with two again; Element group B is connected a diode B 14 after being connected by two diode A12 again with its reverse parallel connection; Element group C with after inductance 15 is connected in series, is connected in parallel piezo-resistance 18 again with Surge Protector 16; Be connected in parallel between element group A, element group B, the element group C.Electric elements group 1 is packed in the casing, and casing can be metal cabinet or nonmetal casing.Earth electrode is made up of a plurality of horizontal grounding utmost points 31 and vertical grounding electrode 32 in the present embodiment.(earth electrode also can be made up of one or more horizontal grounding utmost points 31 certainly, or is made up of one or more vertical grounding electrodes 32.) earth resistance of current drainage earthing device is less than the earth resistance of the structures of need current drainage.
Diode of the present utility model preferably adopts silicon diode, because the pressure drop of the forward of silicon diode joint is 0.7V, so, only seal in a diode B14 at positive arm, negative arm only seals in two diode A12, and diode A, the B12,14 on the positive and negative arm oppositely installs each other.During the positive half wave of interference voltage, forward conduction; When bearing half-wave, the negative sense conducting, so bear the pressure drop of arm joint be-1.4V, close with the cathodic protection potential of pipeline, not only stop scattering and disappearing of protective current, and utilized the part of stray electrical current to be used for the structures protection.
Surge Protector (SPD), electric capacity, resistive pressure-sensitive resistance and diode A, B etc. carry out energy and cooperate, and when big electric current in short-term, piezo-resistance and SPD be action earlier, can effectively reduce the influence of heavy current surges such as direct lightning strike, induction thunder to the metal structures; Carry out the energy proportioning with diode and form clamp circuit; when alternating current-direct current disturbs when long; clamp circuit starts; can with the current potential clamper-1.4～+ 0.7V between; the antiseptic effect of guaranteeing cathodic protection is not subjected to the influence of electromagnetic interference; when special interchange such as high-frequency ac and frequency conversion was disturbed, the interference that exchanges that will be less by the parallel connection combination of the electric capacity that varies in size and resistance drained.
Claims (6)
1. current drainage earthing device, comprise electric elements group (1), metal connecting line (2) and earth electrode, wherein electric elements group (1) one end links to each other with structures, the other end links to each other with earth electrode by metal connecting line (2), it is characterized in that: described electric elements group (1) comprises three parts: element group A, element group B and element group C, element group A has polar capacitor (19) by two, a polarity free capacitor (17) and a resistance (11) are formed, wherein two have polar capacitor (19) to be connected in parallel, after polarity free capacitor (17) and resistance (11) parallel connection, there is polar capacitor (19) to connect with two again; Element group B is connected a diode B (14) after being connected by two diode A (12) again with its reverse parallel connection; Element group C with after inductance (15) is connected in series, is connected in parallel piezo-resistance (18) again with Surge Protector (16); Be connected in parallel between element group A, element group B, the element group C.
2. current drainage earthing device according to claim 1 is characterized in that: described electric elements group (1) is packed in the casing, and described casing is metal cabinet or nonmetal casing.
3. current drainage earthing device according to claim 1 is characterized in that: described earth electrode is made up of one or more horizontal grounding utmost points (31).
4. current drainage earthing device according to claim 1 is characterized in that: described earth electrode is made up of one or more vertical grounding electrodes (32).
5. current drainage earthing device according to claim 1 is characterized in that: described earth electrode is made up of one or more horizontal grounding utmost points (31) and vertical grounding electrode (32).
6. current drainage earthing device according to claim 1 is characterized in that: the earth resistance of described current drainage earthing device is less than the earth resistance of the structures of need current drainage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206799797U CN201946767U (en) | 2010-12-27 | 2010-12-27 | Current drainage grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206799797U CN201946767U (en) | 2010-12-27 | 2010-12-27 | Current drainage grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946767U true CN201946767U (en) | 2011-08-24 |
Family
ID=44474103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206799797U Expired - Fee Related CN201946767U (en) | 2010-12-27 | 2010-12-27 | Current drainage grounding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201946767U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198881A (en) * | 2013-03-18 | 2013-07-10 | 许昌铁通标志有限公司 | Anti-theft expansion integral current drainage device |
| CN104466440A (en) * | 2014-12-11 | 2015-03-25 | 四川为民科技有限公司 | Pulse power grid system lightning protection grounding device for animal protection and installation method thereof |
| CN105071062A (en) * | 2015-09-17 | 2015-11-18 | 武汉大学 | Application of graphite grounding connector for stray current protection |
| CN104357851B (en) * | 2014-10-30 | 2018-02-23 | 华为技术有限公司 | A kind of method, grounding wire device and earthed system for suppressing galvanic corrosion |
| CN111653880A (en) * | 2020-06-29 | 2020-09-11 | 李大伟 | Double-rod type self-maintenance lightning arrester grounding system |
| CN112054317A (en) * | 2020-10-23 | 2020-12-08 | 湖南军芃科技股份有限公司 | Electronic grounding body of mining electronic system |
| CN113294693A (en) * | 2021-04-29 | 2021-08-24 | 国网浙江省电力有限公司绍兴供电公司 | Protection method for buried oil-gas pipe network aiming at power grid ground fault or lightning stroke |
-
2010
- 2010-12-27 CN CN2010206799797U patent/CN201946767U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198881A (en) * | 2013-03-18 | 2013-07-10 | 许昌铁通标志有限公司 | Anti-theft expansion integral current drainage device |
| CN103198881B (en) * | 2013-03-18 | 2016-03-23 | 许昌铁通标志有限公司 | Anti-theft expansion integral current drainage device |
| CN104357851B (en) * | 2014-10-30 | 2018-02-23 | 华为技术有限公司 | A kind of method, grounding wire device and earthed system for suppressing galvanic corrosion |
| CN104466440A (en) * | 2014-12-11 | 2015-03-25 | 四川为民科技有限公司 | Pulse power grid system lightning protection grounding device for animal protection and installation method thereof |
| CN105071062A (en) * | 2015-09-17 | 2015-11-18 | 武汉大学 | Application of graphite grounding connector for stray current protection |
| CN105071062B (en) * | 2015-09-17 | 2019-03-01 | 武汉大学 | The application of fountain graphite grounding body |
| CN111653880A (en) * | 2020-06-29 | 2020-09-11 | 李大伟 | Double-rod type self-maintenance lightning arrester grounding system |
| CN111653880B (en) * | 2020-06-29 | 2021-07-27 | 广西南宁联盾电气有限公司 | Double-rod type self-maintenance lightning arrester grounding system |
| CN112054317A (en) * | 2020-10-23 | 2020-12-08 | 湖南军芃科技股份有限公司 | Electronic grounding body of mining electronic system |
| CN113294693A (en) * | 2021-04-29 | 2021-08-24 | 国网浙江省电力有限公司绍兴供电公司 | Protection method for buried oil-gas pipe network aiming at power grid ground fault or lightning stroke |
| CN113294693B (en) * | 2021-04-29 | 2022-09-06 | 国网浙江省电力有限公司绍兴供电公司 | Protection method for buried oil-gas pipe network aiming at power grid ground fault or lightning stroke |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20121227 |