CN208157653U - A kind of tower grounding device under the limited construction area of power distribution network - Google Patents
A kind of tower grounding device under the limited construction area of power distribution network Download PDFInfo
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- CN208157653U CN208157653U CN201820686501.3U CN201820686501U CN208157653U CN 208157653 U CN208157653 U CN 208157653U CN 201820686501 U CN201820686501 U CN 201820686501U CN 208157653 U CN208157653 U CN 208157653U
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- grounding
- distribution network
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- grounding device
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Abstract
一种配电网有限施工面积下的杆塔接地装置，属于配电线路杆塔防雷接地领域。包括接地体（1），其特征在于：接地体（1）置于接地孔（2）内，所述的接地体（1）包括螺旋体（4）以及接头（3），接头（3）固定在螺旋体（4）的顶部，接地体（1）中至少接头（3）自接地孔（2）的端口处引出，在螺旋体（4）的外周圈沿螺旋体（4）轴向还设置有多个支撑件（5），螺旋体（4）为柔性导电材料。在本配电网有限施工面积下的杆塔接地装置中，将螺旋状的接地体置于垂直开设在地面的接地孔内，降低了接地电阻，配电线路的耐雷水平，同时避免了现有技术中通过水平外延接地体的方式接地电阻时需要占用大量地表面积的弊端。
The utility model relates to a pole tower grounding device under a limited construction area of a distribution network, which belongs to the field of lightning protection grounding of power distribution line pole towers. It includes a grounding body (1), characterized in that: the grounding body (1) is placed in the grounding hole (2), the grounding body (1) includes a spiral body (4) and a joint (3), and the joint (3) is fixed on At the top of the helix (4), at least the joint (3) in the grounding body (1) is led out from the port of the grounding hole (2), and multiple supports are provided on the outer circumference of the helix (4) along the axial direction of the helix (4) Part (5), the spiral body (4) is a flexible conductive material. In the tower grounding device under the limited construction area of the distribution network, the spiral grounding body is placed in the grounding hole vertically opened on the ground, which reduces the grounding resistance and the lightning resistance level of the distribution line. The disadvantage of occupying a large amount of ground surface area when grounding the resistance through the horizontal extension of the grounding body.
Description
Technical field
A kind of tower grounding device under the limited construction area of power distribution network, belongs to distribution line shaft tower lightning protection field.
Background technique
10kV distribution line is the level-one of closer user in electric system, is responsible for daily to industrial and agricultural production, resident
The important duty of life power supply, but distribution line dielectric level is lower, and generally not only will receive without special lightning protection measures
Lightning-caused breaking occurs for the influence of direct lightning strike, also insulator can occur because of the influence of the induced overvoltage for ground generation of being struck by lightning and dodge
Network, tripping.Operating experience shows that the lightening hazard of power distribution network accounts for about the 70% ~ 80% of entire electric system whole lightening hazard, sternly
Important place threatens power supply safety.So the lightning protection of 10kV distribution line is particularly important.
The resistance to thunder level of route is improved with the reduction of ground resistance, so reducing pole tower ground resistance is to improve route
One highly important measure of resistance to thunder level.In the prior art, horizontal to improve the resistance to thunder of shaft tower, it is general using horizontal outer
The mode for prolonging grounding body reduces ground resistance.However city 10kV distribution line shaft tower is generally along road construction, since soil provides
Source is increasingly in short supply, and grounding body horizontal laying area is limited, therefore actual field is difficult to adopt the mode of horizontal extension grounding body and drops
Low ground resistance, the satisfactory ground connection of construction is relatively difficult, causes to be grounded in the distribution line shaft tower earth work of Some City
Resistance severely exceeds, and the resistance to thunder for reducing distribution line is horizontal, influences power supply reliability.In addition, existing tower grounding device
The metallic grounds material such as steel is covered using steel, galvanized steel and copper, often there is corrosion rate height, inductance effect big with soil gap
The problems such as Ying Qiang, difficulty of construction is big, and overall life cycle cost is high.
Summary of the invention
The technical problems to be solved in the utility model is：It overcomes the deficiencies of the prior art and provide and a kind of is connect spiral helicine
Ground body, which is placed in, to be vertically provided in the ground hole on ground, and ground resistance is reduced, and the resistance to thunder of distribution line is horizontal, avoids simultaneously
The power distribution network for needing to occupy a large amount of surface areas when ground resistance by way of horizontal extension grounding body in the prior art is limited
Tower grounding device under construction area.
Technical solution adopted by the utility model to solve its technical problems is：Bar under the limited construction area of the power distribution network
Tower earthing or grounding means, including grounding body, it is characterised in that：Grounding body, which is placed in, to be vertically provided in the ground hole on ground, and described connects
Ground body includes spiral helicine conveyor screw and connector, and connector is fixed on the top of conveyor screw, and at least connector is grounded certainly in grounding body
Draw at the port in hole and connect with the ground terminal of shaft tower, conveyor screw outlet along helicoid shaft to being additionally provided with multiple use
In the supporting element being supported to conveyor screw, conveyor screw is flexible conducting material.
Preferably, the supporting element is strip, and including multiple fixed rings for being uniformly arranged and to be located at adjacent two solid
Determine the connecting rod between ring, is passed through in the conveyor screw self-retaining ring.
Preferably, the spacing between adjacent two fixed ring is the screw pitch of conveyor screw.
Preferably, there are three supporting element settings, it is mutually 120 ° of the outlet for being uniformly arranged on conveyor screw.
Preferably, the connector includes that casing and the connection handle positioned at sleeve upper end, casing are integrated with connection handle
Structure, casing part are provided with opening, and inside pipe casing is the cavity for accommodating conveyor screw, connection handle be it is flat, on connection handle
Offer the mounting hole of ellipse.
Preferably, the conveyor screw Flexible Graphite Composites.
Preferably, the ground connection hole depth is lower than 2m, and diameter is less than or equal to 0.4m.
Preferably, the line footpath of the conveyor screw is 28mm, and spiral coil outer diameter is 400mm.
Compared with prior art, beneficial effect possessed by the utility model is：
1, in the tower grounding device under the limited construction area of this power distribution network, spiral helicine grounding body is placed in and is vertically opened
It is located in the ground hole on ground, reduces ground resistance, the resistance to thunder of distribution line is horizontal, while avoiding and passing through in the prior art
The drawbacks of occupying a large amount of surface areas is needed when the mode ground resistance of horizontal extension grounding body.
2, conveyor screw uses helical structure, can increase the contact area with soil, reduce resistance, further to improve
The resistance to thunder of distribution line is horizontal.Power frequency and impulse earthed resistance can be effectively reduced to improve the distribution line water of resistance to thunder
Gentle power supply reliability, and cost is reduced, improve economy.
3, since conveyor screw is flexible material, by setting supporting element, the helical structure of conveyor screw is made to be maintained,
It avoids conveyor screw from deforming, ensure that the electric property of conveyor screw.
4, the mounting hole of ellipse is offered on connection handle, mounting hole is through-hole, the convenient power distribution network with different pore size
The ground terminal of shaft tower connects.
Detailed description of the invention
Fig. 1 is the tower grounding device scheme of installation under the limited construction area of power distribution network.
Fig. 2 is the tower grounding apparatus structure schematic diagram under the limited construction area of power distribution network.
Fig. 3 is the tower grounding device leptospira structure schematic diagram under the limited construction area of power distribution network.
Fig. 4 is the tower grounding device supporting piece structure schematic diagram under the limited construction area of power distribution network.
Fig. 5 is the tower grounding device joint structure schematic diagram under the limited construction area of power distribution network.
Wherein：1, grounding body 2, ground hole 3, connector 4, conveyor screw 5, supporting element 6, fixed ring 7, connecting rod 8,
Connection handle 9, casing.
Specific embodiment
Fig. 1 ~ 5 are the most preferred embodiments of the utility model, and 1 ~ 5 pair of the utility model is done furtherly with reference to the accompanying drawing
It is bright.
As shown in Figure 1, the tower grounding device under a kind of limited construction area of power distribution network（Hereinafter referred to as earthing or grounding means）, packet
Grounding body 1 is included, grounding body 1 is put into from top to bottom in ground hole 2.Ground hole 2 is using conventional drilling machine perpendicular to ground
The drilling of formation, ground hole 2 is deep to be lower than 2m, and diameter is less than or equal to 0.4m.Grounding body 1 place complete after in ground hole 2 into
The filling of row soil completes the fixation of grounding body 1 while guaranteeing that grounding body 1 is contacted with the good of soil, after grounding body 1 is fixed
The upper end is drawn from the port of ground hole 2, for connecting with the ground terminal of power distribution network shaft tower.
As shown in Fig. 2, grounding body 1 includes conveyor screw 4, connector 3 is fixed in the upper end of conveyor screw 4, and connector 3 is from ground hole
It is drawn at 2 port, for being connect with the ground terminal of power distribution network shaft tower.It is carried out in the border of conveyor screw 4 by multiple supporting elements 5
Support.
In conjunction with Fig. 3, conveyor screw 4 is made of Flexible Graphite Composites, the radius and conveyor screw 4 of conveyor screw 4 itself
Screw pitch requires depending on engineering demand and terrain environment with spiral coil radius and is arbitrarily arranged, in this earthing or grounding means, the line of conveyor screw 4
Diameter is 28mm, and spiral coil outer diameter is 400mm, is provided with 5 circles altogether.Helical structure is used simultaneously, can increase the contact with soil
Area, reduces resistance, and the resistance to thunder for further improving distribution line is horizontal.Power frequency can be effectively reduced and impact connects
Ground resistance reduces cost to improve the resistance to thunder level of distribution line and power supply reliability, improves economy.
As shown in figure 4, the outlet in conveyor screw 4 is provided with multiple supporting elements 5, supporting element 5 is strip, supporting element 5
Multiple fixed rings 6 including being uniformly arranged from top to bottom and the connecting rod 7 between adjacent two fixed ring 6.In this ground connection
In device, supporting element 5 is structure as a whole, and is made of rigid strip material, such as iron wire.Supporting element 5 is scheduled according to conveyor screw 4
Screw pitch forms fixed ring 6 apart from writhing number circle at interval of screw pitch, is formed simultaneously after being wound two adjacent fixed rings 6
Corresponding connecting rod 7, conveyor screw 4 form scheduled helical form after passing through from the fixed ring 6 in different supporting elements 5.
In this earthing or grounding means, there are three the settings of supporting element 5, is mutually 120 ° of the outlet for being uniformly arranged on conveyor screw 4.
Since conveyor screw 4 is flexible material, by setting supporting element 5, so that the helical structure of conveyor screw 4 is maintained, avoid spiral shell
Rotation body 4 deforms, and ensure that the electric property of conveyor screw 4.
As shown in figure 5, the connector 3 that 4 upper end of conveyor screw is arranged in includes casing 9 and the connection handle positioned at 9 upper end of casing
8, casing 9 is structure as a whole with connection handle 8, and 9 lower part of casing is provided with opening, is the cavity for accommodating conveyor screw 4 inside casing 9,
Connection handle 8 is mounting hole that is flat, and offering on connection handle 8 ellipse, and mounting hole is through-hole, is used for and different pore size
Power distribution network shaft tower ground terminal connection.
Specific work process and principle are as follows：
Several supporters 5 are made first, in accordance with the parameter of presetting conveyor screw 4, then wear Flexible Graphite Composites
Conveyor screw 4 is formed after crossing the fixed ring 6 in supporter 5, then connector 3 is fixed on to the upper end of conveyor screw 4, grounding body 1 is made.
Then grounding body 1 is placed in after being provided in the ground hole 2 on ground in advance and carries out soil filling in ground hole 2, complete to connect
The connector 3 drawn from the port of ground hole 2 is finally connect by the fixation of ground body 1 with the ground terminal of power distribution network shaft tower.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model
Protect range.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820686501.3U CN208157653U (en) | 2018-05-09 | 2018-05-09 | A kind of tower grounding device under the limited construction area of power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820686501.3U CN208157653U (en) | 2018-05-09 | 2018-05-09 | A kind of tower grounding device under the limited construction area of power distribution network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208157653U true CN208157653U (en) | 2018-11-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820686501.3U Expired - Fee Related CN208157653U (en) | 2018-05-09 | 2018-05-09 | A kind of tower grounding device under the limited construction area of power distribution network |
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| CN (1) | CN208157653U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300128A (en) * | 2021-04-27 | 2021-08-24 | 国网山东省电力公司淄博供电公司 | Pole tower spiral needling type grounding device based on spark enhancement effect |
| CN115422743A (en) * | 2022-08-31 | 2022-12-02 | 国网宁夏电力有限公司电力科学研究院 | Three-dimensional grounding device, design method thereof, and design method for carrying out voltage sharing |
-
2018
- 2018-05-09 CN CN201820686501.3U patent/CN208157653U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300128A (en) * | 2021-04-27 | 2021-08-24 | 国网山东省电力公司淄博供电公司 | Pole tower spiral needling type grounding device based on spark enhancement effect |
| CN113300128B (en) * | 2021-04-27 | 2024-05-28 | 国网山东省电力公司淄博供电公司 | Spiral needle-type grounding device for tower based on spark enhancement effect |
| CN115422743A (en) * | 2022-08-31 | 2022-12-02 | 国网宁夏电力有限公司电力科学研究院 | Three-dimensional grounding device, design method thereof, and design method for carrying out voltage sharing |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181127 Termination date: 20190509 |