CN2658753Y - Grounding electrode device used for measuring resistance to ground - Google Patents
Grounding electrode device used for measuring resistance to ground Download PDFInfo
- Publication number
- CN2658753Y CN2658753Y CN 03277944 CN03277944U CN2658753Y CN 2658753 Y CN2658753 Y CN 2658753Y CN 03277944 CN03277944 CN 03277944 CN 03277944 U CN03277944 U CN 03277944U CN 2658753 Y CN2658753 Y CN 2658753Y
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- China
- Prior art keywords
- ground
- metal electrode
- electrode bar
- resistance
- central metal
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Abstract
The utility model relates to an electrode used to measure the resistance to the ground, in particular to a grounding electrode device used to measure the resistance to the ground, and comprises a central metal electrode stick. The structural key points are that the electrode is also composed of a plurality of second electrode sticks and horizontally-grounded wires, wherein the central metal electrode stick is connected with the second metal electrode sticks respectively through the horizontally-grounded wires. The utility model has the advantages that the resistance to the ground is reduced by adding the grounding electrode; the measuring device current to the ground is added; the measurement error is lowered; the measurement accuracy is enhanced; also has an unexpected effects that the insertion depth of the metal electrode stick in the ground is not too deep because the horizontally-grounded wires lower the resistance to the ground, thereby lowering the construction difficulties and enhancing the construction efficiency.
Description
Technical field
The utility model relates to a kind of resistance to earth and measures used electrode, particularly a kind of ground-electrode device that is used to measure resistance to earth.
Background technology
In the prior art, the ground-electrode that is used to measure resistance to earth includes two electric current utmost points and two potential poles, all adopt metal bar, the electric current utmost point and potential pole are connected to measurement mechanism by lead respectively, the two electric current utmost points insert more than the below ground 30cm during measurement, in the measurement of resistance to earth, be subjected to the influence of the stray current (its size and Orientation instability) of the earth owing to measurement electric current (measurement mechanism is the electric current in the inflow place by the ground current utmost point), cause measuring error big, measuring accuracy is low, brings very big difficulty to surveying work.Address this problem, just need improve measuring electric current, make it far above stray current, at this moment stray current just can be ignored when measuring, and perhaps is controlled within the error range.In order to reduce error, one, can improve measuring voltage, but measuring voltage improves, stray current also brings safe hidden danger to survey crew also with corresponding increase the time; Two, can reduce the grounding resistance of ground-electrode, but in the prior art because the restriction of being carried, operate, carrying, the length of ground-electrode can not obtain and oversizely (have only 50～60cm) usually, and the variation of sectional area be very little to the resistance change role of ground-electrode; Three, promptly enable metal bar is deeper inserted below ground, make it under the situation of same current density, improve the contact area of metal bar and the earth, promptly under identical voltage condition, increase makes it far above stray current vagabond current, to reduce error, but greatly increased difficulty of construction, particularly under hard rocky ground situation.
Invention constitutes
The purpose of this utility model is to overcome the deficiencies in the prior art part and a kind of ground-electrode device that is used to measure resistance to earth that reduces the measuring error of resistance to earth and improve measuring accuracy is provided.
The purpose of this utility model can realize by following approach:
Be used to measure the ground-electrode device of resistance to earth, include a central metal electrode bar, its structural feature is, also include complex root second metal electrode bar and horizontal grounding lead, wherein the central metal electrode bar by the horizontal grounding lead and be connected with complex root second metal electrode bar respectively.
When in use, the central metal electrode bar can be plugged on the ground that to measure, and be the center with the central metal electrode bar, complex root second metal electrode bar is plugged on around the central metal rod radially, and the two links together by the horizontal grounding lead.Because each root second metal electrode is all excellent and connect by horizontal grounding lead and central electrode, each root second metal electrode, central electrode rod and horizontal grounding lead all are grounding bodies like this, its resistance value:
R?∞ρ/(2πl
∑)
L wherein
∑: the total length of grounding body is all metal electrode bar length and the summation of horizontal grounding conductor length.Like this,, increased the length of resistance, just can reduce the resistance value of ground-electrode widely, thereby increase, reduced measuring error, improved the precision of measuring vagabond current because the length of resistance value and its resistance is inversely proportional to.
Owing to increased the horizontal grounding lead to reducing the effect of stake resistance, the inserting depth over the ground of the central metal electrode bar and second metal electrode bar does not just need excessive, need only 10～20cm, so just brought a unexpected effect, promptly alleviated the construction burden, reduce difficulty of construction, improved operating efficiency.
Being connected between horizontal grounding lead and the central metal electrode bar and second metal electrode bar can have multiple choices:
The horizontal grounding lead is by being wrapped in respectively on second metal electrode bar and the central metal electrode bar and the two is coupled together.
Like this can be so that dismounting in work progress, convenient construction.Perhaps
The horizontal grounding lead is by fastener (as bolt etc.) and second metal electrode bar and central metal electrode bar are coupled together.
Connect by fastener, can improve the reliability of connection.
The horizontal grounding lead is a kind of multiply annealed copper strand wire.
The multiply annealed copper strand wire can closely contact with the earth with the physical features variation as the horizontal grounding body.
The utility model can also further be specially:
Ground distance between second metal electrode bar and the central metal electrode bar that is to say that the length of horizontal grounding lead should be more than the 0.5m;
When distributing, the distance between any two of complex root second metal electrode bar is more than the 0.5m.
Ground distance between second metal electrode bar and the central metal electrode bar, the length of horizontal grounding lead just, can determine according to the situation of the distance between two second metal electrode bars, in general, distance between second metal electrode bar is big more, and then the distance between second metal electrode bar and the central metal electrode bar also will be big more; Can determine that also if ground is broad, then its distance also can be big more according to the situation of measuring ground, if ground is comparatively rugged, then owing to measure inconvenience, its distance also can diminish.
In sum, advantage of the present utility model is: reduced the ground-electrode resistance value by the length that increases ground-electrode, increased measurement mechanism to vagabond current, reduced measuring error, improved measuring accuracy, the utility model also has a unexpected effect simultaneously, promptly because the horizontal grounding lead reduces the effect of stake resistance, so it is dark that the inserting depth over the ground of metal electrode bar did not need, thereby reduced difficulty of construction, improved operating efficiency.
Description of drawings
Figure 1 shows that the structural representation of the utility model embodiment 1;
Figure 2 shows that the side structure synoptic diagram of the utility model embodiment 1;
Figure 3 shows that the structural representation of the utility model most preferred embodiment.
Below we the utility model will be further described in conjunction with the embodiments.
Specific embodiment
Embodiment 1:
Referring to accompanying drawing 1, be used to measure the ground-electrode device of resistance to earth, include a central metal electrode bar 1 and 5 second metal electrode bars 2, one end of central metal electrode bar 1 is electrically connected with resistance to earth measurement mechanism 4, the other end then is plugged on to be measured on the ground, 5 second metal electrode bars are the center with central metal electrode bar 1, being the aplysia punctata distribution is plugged on central metal electrode bar 1 ground on every side, and be connected with central metal electrode bar 1 by horizontal grounding lead 3, horizontal grounding lead 3 is a kind of multiply annealed copper strand wires, it is by being wrapped in respectively on the central metal electrode bar 1 and second metal electrode bar 2 and the two is coupled together, and closely contact: with the standardized on the ground road of electrode bar ditch with ground, annealed copper strand wire is put into, with compacting behind the native landfill; Simultaneously 5 second metal electrode bars 2 with distance between the central metal electrode bar 1 be between the length of horizontal grounding lead 3 be respectively 0.8m, 1.5m, 1.8m, 2m, 2.5m.
Referring to accompanying drawing 2, central metal electrode bar 1 inserting depth over the ground is 18cm, and second metal electrode bar over the ground inserting depth be 15cm.
It is same as the prior art that the utility model is not stated part.
Most preferred embodiment:
Referring to accompanying drawing 3, be used to measure the ground-electrode device of resistance to earth, include a central metal electrode bar 1 and 4 second metal electrode bars 2,4 second metal electrode bars 2 are the cross radial distribution around central metal electrode bar 1, central metal electrode bar 1 is in the center of this cross distribution simultaneously, and the distance between these 4 second metal electrode bars 2 and the central metal electrode bar 1, the distance of the horizontal grounding lead 3 promptly is 2.5m, and simultaneously the inserting depth over the ground of central metal electrode bar 1 and 4 second metal electrode bar 2 is 15cm.
It is identical with embodiment 1 that present embodiment is not stated part.
Claims (6)
1, is used to measure the ground-electrode device of resistance to earth, include a central metal electrode bar (1), it is characterized in that, also include complex root second metal electrode bar (2) and horizontal grounding lead (3), wherein central metal electrode bar (1) is connected with complex root second metal electrode bar (2) respectively by horizontal grounding lead (3).
2, the ground-electrode device that is used to measure resistance to earth according to claim 1 is characterized in that, horizontal grounding lead (3) is by being wrapped on second metal electrode bar (2) and the central metal electrode bar (1) respectively and the two being coupled together.
3, the ground-electrode device that is used to measure resistance to earth according to claim 1 is characterized in that, horizontal grounding lead (3) is connected with central metal electrode bar (1) with second metal electrode bar (2) respectively by fastener and the two is coupled together.
4, the ground-electrode device that is used to measure resistance to earth according to claim 3 is characterized in that fastener or trip bolt, or bolt.
5, the ground-electrode device that is used to measure resistance to earth according to claim 1 is characterized in that, horizontal grounding lead (3) is a kind of multiply annealed copper strand wire.
6, the ground-electrode device that is used to measure resistance to earth according to claim 1 is characterized in that, the connection length of horizontal grounding lead (3), and promptly the ground distance between second metal electrode bar (2) and the central metal electrode bar (1) is more than the 0.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03277944 CN2658753Y (en) | 2003-08-19 | 2003-08-19 | Grounding electrode device used for measuring resistance to ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03277944 CN2658753Y (en) | 2003-08-19 | 2003-08-19 | Grounding electrode device used for measuring resistance to ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658753Y true CN2658753Y (en) | 2004-11-24 |
Family
ID=34331901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03277944 Expired - Lifetime CN2658753Y (en) | 2003-08-19 | 2003-08-19 | Grounding electrode device used for measuring resistance to ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658753Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749442A (en) * | 2013-12-31 | 2015-07-01 | 孙巍巍 | Novel multi-point earthing resistance measuring device |
| CN112098758A (en) * | 2020-09-18 | 2020-12-18 | 国网湖南省电力有限公司 | Test platform and test method for extra-high voltage direct current deep well grounding electrode |
| CN112505425A (en) * | 2020-12-10 | 2021-03-16 | 厦门大恒科技有限公司 | Grounding resistance testing device and grounding resistance testing method |
-
2003
- 2003-08-19 CN CN 03277944 patent/CN2658753Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749442A (en) * | 2013-12-31 | 2015-07-01 | 孙巍巍 | Novel multi-point earthing resistance measuring device |
| CN104749442B (en) * | 2013-12-31 | 2017-11-07 | 孙巍巍 | A kind of multipoint earthing electric resistance measurement apparatus |
| CN112098758A (en) * | 2020-09-18 | 2020-12-18 | 国网湖南省电力有限公司 | Test platform and test method for extra-high voltage direct current deep well grounding electrode |
| CN112098758B (en) * | 2020-09-18 | 2022-06-24 | 国网湖南省电力有限公司 | Test platform and test method for extra-high voltage direct current deep well grounding electrode |
| CN112505425A (en) * | 2020-12-10 | 2021-03-16 | 厦门大恒科技有限公司 | Grounding resistance testing device and grounding resistance testing method |
| CN112505425B (en) * | 2020-12-10 | 2024-03-22 | 厦门大恒科技有限公司 | Ground resistance testing device and ground resistance testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130819 Granted publication date: 20041124 |