CN202585768U - Hollow grounding device - Google Patents
Hollow grounding device Download PDFInfo
- Publication number
- CN202585768U CN202585768U CN 201220249359 CN201220249359U CN202585768U CN 202585768 U CN202585768 U CN 202585768U CN 201220249359 CN201220249359 CN 201220249359 CN 201220249359 U CN201220249359 U CN 201220249359U CN 202585768 U CN202585768 U CN 202585768U
- Authority
- CN
- China
- Prior art keywords
- container
- hollow
- metal tube
- grounding
- open web
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims description 27
- 208000002925 dental caries Diseases 0.000 claims description 7
- 238000005267 amalgamation Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 20
- 239000004020 conductor Substances 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000004927 clay Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 238000003860 storage Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 208000025274 Lightning injury Diseases 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Abstract
The utility model discloses a hollow grounding device. The hollow grounding device comprises a hollow metallic conduction container; the container is provided with a closable opening which is used for filling a containing substance in the container; and a water outlet structure where small holes are fully distributed is further arranged on the container, and the small holes of the water outlet structure are communicated with a cavity inside the container. When the hollow grounding device is used, clay soil (namely the containing substance) of 1/3 the capacity of the hollow container is filled in the hollow container, the whole container is put in a dug pit, soil is backfilled and then watered and tamped, then the container is fully filled with water, and a container body is excellently welded to a grounding body. The hollow grounding device has the advantages that the weight is light, and the grounding conductor is spherical and has a large soil contact area, so that a grounding steel material for an electric transmission line is saved, and the transportation is facilitated; the grounding conductor is the hollow container, so that the grounding conductor can store water; and the water outlet structure is arranged on the container, so that water stored in the container can slowly permeate into surrounding soil, the soil can keep damp for a long time, and the improvement on the diffusing effect of the grounding body is favored.
Description
Technical field
The utility model relates to electric power auxiliary appliance field, particularly a kind of earthing device that adopts the open web type structure.
Background technology
The main purpose of overhead transmission line tower grounding is a lightning protection, leads and unloads lightning current.The earth resistance of shaft tower is having the circuit of lightning conducter, and every basic shaft tower does not connect the power frequency earthing resistance of lightning conducter, when dry, should not surpass the listed numerical value of table 1 in thunder season.
Table 1 has the power frequency earthing resistance of the overhead line structures of lightning conducter
Annotate: very high like soil resistivity, when earth resistance is difficult to be reduced to 30 Ω, can adopt 6～8 length overalls to be no more than radial ground conductor or the employing continuous elongation earth electrode of 500m, earth resistance is unrestricted.
Can find out that from table 1 soil resistivity of shaft tower location is high more, require low more the ground connection resistance.The place that soil resistivity is big generally all is that environment is more dangerous, the place of complicated geology, and pursuit resistance value simply need increase a large amount of investments.So should suit measures to local conditions, the highway section in that area with more lightning activities is prone to take place lightning stroke trip should reduce pole tower ground resistance as much as possible, reduces counterattack voltage.
Earth resistance comprises power frequency earthing resistance and impulse earthed resistance.In the very high mountain area of soil resistivity,, should take measures to reduce the impulse earthed resistance of shaft tower when reducing power frequency earthing resistance very at need.Impulse earthed resistance is relevant with sparkover and transient process in the soil, and is relevant with structure, the shape and size of earthing device again.
Therefore, be necessary to work out a kind of new earthing device, can effectively reduce earth resistance, the lightning protection of mountain area transmission line is had good application.
Summary of the invention
In view of this, the purpose of the utility model provides a kind of open web type earthing device, and it is simple in structure, and is easy for installation, can reduce earth resistance effectively, is particularly suitable for the lightning protection of mountain area transmission line.
The purpose of the utility model realizes through following technical scheme:
This kind open web type earthing device comprises the metallic conduction container of a hollow, and container is provided with closed opening, is used in container, filling contents; Also be provided with the water flowing out structure that spreads all over aperture on the said container, the aperture on the water flowing out structure is connected with the internal tank cavity.
Further, said water flowing out structure and container are processed one, are the part of vessel surface;
Further, said water flowing out structure is one to be connected in the metal tube on the container, and the pipe shaft of said metal tube is provided with a plurality of apertures, the tube chamber of metal tube and the intracavity inter-connection of container;
Further, also be provided with the water filling metal tube on the said container, the intracavity inter-connection of said water filling metal tube and container;
Further, container is a spherical structure;
Further, container comprises two hemisphere cavitys, and two hemisphere cavitys are formed container through dismountable syndeton amalgamation together, and the opening of hemisphere cavity is the opening of container;
Further, place, the summit, arch of one of them hemisphere cavity is provided with water filling metal tube, the intracavity inter-connection of said water filling metal tube and container; The place, summit, arch of another one hemisphere cavity is provided with water flowing out structure;
Further, said water flowing out structure is one to be connected in the metal tube on the container, and the pipe shaft of said metal tube is provided with a plurality of apertures, the tube chamber of metal tube and the intracavity inter-connection of container;
Further, said device makes container be connected with the external ground body through ground lead;
Further, container is that grainal is processed.
The beneficial effect of the utility model is:
1. the utility model is in light weight, and earthing conductor is spherical, long-pending big with soil contact, has not only saved transmission line ground connection steel but also be convenient to transportation;
2. be hollow body owing to earthing conductor, but interior water storage; Container is provided with water flowing out structure, makes the interior water storage of container slowly infiltrate surrounding soil, makes soil can keep moist for a long time, helps improving the diffusing stream effect of earth electrode;
3. the installation of the utility model is easy, and during installation, the closest approach that only need be embedded in shaft tower is underground, need not take over peasant's soil for use, and easy to assembly, its compensation for crops will drop to floor level;
4. because orbicule adopts the grainal casting, its conductivity and decay resistance are all very good, can guarantee to use need not change in 10 ~ 20 years.
Other advantages, target and the characteristic of the utility model will be set forth in specification subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from the practice of the utility model, obtain instruction to investigating of hereinafter.The target of the utility model and other advantages can realize and obtain through following specification.
Description of drawings
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:
Fig. 1 is the structural representation of embodiment one;
Fig. 2 is the structural representation of embodiment two;
Fig. 3 is the structural representation of embodiment three;
Fig. 4 is a kind of execution mode sketch map of the utility model;
Fig. 5 be Fig. 4 along A to schematic top plan view.
Embodiment
Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.Should be appreciated that preferred embodiment has been merely explanation the utility model, rather than in order to limit the protection range of the utility model.
The quality of earthing device earth electrode, key is whether getting well of its diffusing properties of flow.Can know by following formula, in the design process of earthing device, enlarge the diffusing flow area of earth electrode to greatest extent and reduce earth electrode soil resistivity on every side, can effectively reduce earth resistance.
R=?ρ/S
In the formula; R-power frequency earthing resistance;
ρ-soil resistivity;
S-cross-sectional area of conductor is long-pending,
The open web type earthing device of the utility model comprises the metallic conduction container of a hollow, and container is provided with closed opening, is used in container, filling contents; Also be provided with the water flowing out structure that spreads all over aperture on the container; Aperture on the water flowing out structure is connected with the internal tank cavity; The occupation mode of the utility model is with the clay earth (being contents) of filling 1/3 capacity in the empty stomach container, then with the whole hole of digging of putting into of container, after the reclaimed soil and the compacting of watering; Well get final product again with filling water in the container, and vessel and earth electrode welding.
Embodiment one
As shown in Figure 1, in the present embodiment, container 1 is a spherical structure; Container comprises two hemisphere cavitys 11; Two hemisphere cavitys are formed container through dismountable syndeton amalgamation together, and in the present embodiment, the opening part that is employed in two hemisphere cavitys is provided with flange respectively; Adopt the flange ways of connecting to form container, the opening of hemisphere cavity is the opening of container.
The place, summit, arch of one of them hemisphere cavity is provided with closed water filling metal tube 2, the intracavity inter-connection of said water filling metal tube 2 and container; The place, summit, arch of another one hemisphere cavity is provided with water flowing out structure 3, and in the present embodiment, water flowing out structure and container are processed one, are the part of vessel surface.
Because earthing conductor is spherical hollow body, but interior water storage through the water filling metal tube, can be injected container with water, through water flowing out structure, make the interior water storage of ball slowly infiltrate surrounding soil, make soil can keep moist for a long time, help improving the diffusing stream effect of earth electrode.
Certainly, container can also adopt other structures, like square, taper, drum shape etc., adopts the benefit of spherical structure to be to be easy to processing and carrying.
Embodiment two
As shown in Figure 2, the difference of present embodiment and embodiment one is:Water flowing out structure is one to be connected in the metal tube on the container, and the pipe shaft of metal tube is provided with a plurality of apertures, the tube chamber of metal tube and the intracavity inter-connection of container.
Adopt pipe structure, can make the time of infiltration in the ball be able to prolong, minimizing adds the waterside number.
Embodiment three
As shown in Figure 3, the difference of present embodiment and embodiment two is:Device also comprises ground lead 4, and an end of ground lead is connected with the water filling metal tube, and the other end leads to the external ground body, and earth electrode is connected with the device of the utility model.
When the utility model is installed; Can adopt following mode: like Fig. 4, shown in Figure 5, adopt many round steel to be connected with the ground lead of a plurality of devices respectively, a plurality of device levels are linked together; Structure forms a whole; The root of base shaft tower is positioned at this integrally-built center, round steel is connected with earth electrode on the basic shaft tower get final product, and this kind mode is suitable for the ground connection of basic shaft tower.
Find through test, use that the pole tower ground resistance of transmission line significantly descends behind the utility model, all below 8 Ω, and As time goes on, grounding resistance reduces.The test area all is that thunder and lightning day is frequently regional; Test circuit is after high soil resistivity is installed and used the open web type earthing device; Two years did not suffer a lightning stroke trip accident, had reduced tripping rate with lightning strike to a great extent, had guaranteed the safe and stable operation of circuit.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (10)
1. open web type earthing device, it is characterized in that: said device comprises the metallic conduction container of a hollow, and container is provided with closed opening, is used in container, filling contents; Also be provided with the water flowing out structure that spreads all over aperture on the said container, the aperture on the water flowing out structure is connected with the internal tank cavity.
2. open web type earthing device according to claim 1 is characterized in that: said water flowing out structure and container are processed one, are the part of vessel surface.
3. open web type earthing device according to claim 1 is characterized in that: said water flowing out structure is one to be connected in the metal tube on the container, and the pipe shaft of said metal tube is provided with a plurality of apertures, the tube chamber of metal tube and the intracavity inter-connection of container.
4. open web type earthing device according to claim 1 is characterized in that: also be provided with the water filling metal tube on the said container, the intracavity inter-connection of said water filling metal tube and container.
5. according to claim 1 or 2 or 3 or 4 described open web type earthing device, it is characterized in that: container is a spherical structure.
6. open web type earthing device according to claim 5 is characterized in that: container comprises two hemisphere cavitys, and two hemisphere cavitys are formed container through dismountable syndeton amalgamation together, and the opening of hemisphere cavity is the opening of container.
7. open web type earthing device according to claim 6 is characterized in that: the place, summit, arch of one of them hemisphere cavity is provided with water filling metal tube, the intracavity inter-connection of said water filling metal tube and container; The place, summit, arch of another one hemisphere cavity is provided with water flowing out structure.
8. open web type earthing device according to claim 7 is characterized in that: said water flowing out structure is one to be connected in the metal tube on the container, and the pipe shaft of said metal tube is provided with a plurality of apertures, the tube chamber of metal tube and the intracavity inter-connection of container.
9. open web type earthing device according to claim 1 is characterized in that: said device makes container be connected with the external ground body through ground lead.
10. open web type earthing device according to claim 1 is characterized in that: container is that grainal is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220249359 CN202585768U (en) | 2012-05-30 | 2012-05-30 | Hollow grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220249359 CN202585768U (en) | 2012-05-30 | 2012-05-30 | Hollow grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202585768U true CN202585768U (en) | 2012-12-05 |
Family
ID=47255146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220249359 Expired - Lifetime CN202585768U (en) | 2012-05-30 | 2012-05-30 | Hollow grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202585768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050792A (en) * | 2012-12-12 | 2013-04-17 | 武汉华中电力电网技术有限公司 | Shielding frame grounding grid for improving peripheral power frequency electric (magnetic) field of overhead transmission line |
-
2012
- 2012-05-30 CN CN 201220249359 patent/CN202585768U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050792A (en) * | 2012-12-12 | 2013-04-17 | 武汉华中电力电网技术有限公司 | Shielding frame grounding grid for improving peripheral power frequency electric (magnetic) field of overhead transmission line |
| CN103050792B (en) * | 2012-12-12 | 2014-12-24 | 武汉华中电力电网技术有限公司 | Shielding frame grounding grid for improving peripheral power frequency electric (magnetic) field of overhead transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121206 Address after: 401220, 8, Wangjiang Road, Fengcheng street, Changshou District, Chongqing Patentee after: Changshou Power Supply Bureau of Chongqing Electric Power Corporation Patentee after: State Grid Corporation of China Address before: 401220, 8, Wangjiang Road, Fengcheng street, Changshou District, Chongqing Patentee before: Changshou Power Supply Bureau of Chongqing Electric Power Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |