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 PDF

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Publication number
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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CN
China
Prior art keywords
conveyor screw
power distribution
distribution network
construction area
device under
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 - Fee Related
Application number
CN201820686501.3U
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Chinese (zh)
Inventor
刘大鹏
刘斌
李刚
王珏
郭路山
辛健
崔彦平
宫钦伟
王刚
姜利利
谢博
孙宁
咸日常
安韵竹
胡元潮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Shandong University of Technology
Yantai Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Shandong University of Technology
Yantai Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Shandong University of Technology, Yantai Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201820686501.3U priority Critical patent/CN208157653U/en
Application granted granted Critical
Publication of CN208157653U publication Critical patent/CN208157653U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of tower grounding device under the limited construction area of power distribution network, belongs to distribution line shaft tower lightning protection field.Including grounding body(1), it is characterised in that:Grounding body(1)It is placed in ground hole(2)Interior, described grounding body(1)Including conveyor screw(4)And connector(3), connector(3)It is fixed on conveyor screw(4)Top, grounding body(1)In at least connector(3)From ground hole(2)Port at draw, in conveyor screw(4)Outlet along conveyor screw(4)Axially it is additionally provided with multiple supporting elements(5), conveyor screw(4)For flexible conducting material.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 provided in the ground hole on ground, reduce ground resistance, the resistance to thunder of distribution line is horizontal, while avoiding and needing the drawbacks of occupying a large amount of surface areas when ground resistance by way of horizontal extension grounding body in the prior art.

Description

A kind of tower grounding device under the limited construction area of power distribution network
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)

1. the tower grounding device under a kind of limited construction area of power distribution network, including grounding body(1), it is characterised in that:Grounding body (1)It is placed in the ground hole for being vertically provided with ground(2)Interior, described grounding body(1)Including spiral helicine conveyor screw(4)And it connects Head(3), connector(3)It is fixed on conveyor screw(4)Top, grounding body(1)In at least connector(3)From ground hole(2)Port at It draws and is connect with the ground terminal of shaft tower, in conveyor screw(4)Outlet along conveyor screw(4)Axially be additionally provided with it is multiple for pair Conveyor screw(4)The supporting element being supported(5), conveyor screw(4)For flexible conducting material.
2. the tower grounding device under the limited construction area of power distribution network according to claim 1, it is characterised in that:Described Supporting element(5)For strip, including the multiple fixed rings being uniformly arranged(6)And it is located at adjacent two fixed ring(6)Between company Extension bar(7), the conveyor screw(4)Self-retaining ring(6)In pass through.
3. the tower grounding device under the limited construction area of power distribution network according to claim 2, it is characterised in that:Adjacent two The fixed ring(6)Between spacing be conveyor screw(4)Screw pitch.
4. the tower grounding device under the limited construction area of power distribution network according to claim 1, it is characterised in that:Described Supporting element(5)There are three settings, is mutually 120 ° and is uniformly arranged on conveyor screw(4)Outlet.
5. the tower grounding device under the limited construction area of power distribution network according to claim 1, it is characterised in that:Described Connector(3)Including casing(9)And it is located at casing(9)The connection handle of upper end(8), casing(9)With connection handle(8)It is integrated knot Structure, casing(9)Lower part is provided with opening, casing(9)Inside is receiving conveyor screw(4)Cavity, connection handle(8)To be flat, In connection handle(8)On offer ellipse mounting hole.
6. the tower grounding device under the limited construction area of power distribution network according to claim 1, it is characterised in that:Described Conveyor screw(4)Flexible Graphite Composites.
7. the tower grounding device under the limited construction area of power distribution network according to claim 1, it is characterised in that:It is described to connect Ground hole(2)Depth is lower than 2m, and diameter is less than or equal to 0.4m.
8. the tower grounding device under the limited construction area of power distribution network according to claim 1, it is characterised in that:The spiral shell Revolve body(4)Line footpath be 28mm, spiral coil outer diameter be 400mm.
CN201820686501.3U 2018-05-09 2018-05-09 A kind of tower grounding device under the limited construction area of power distribution network Expired - Fee Related CN208157653U (en)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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 Tower spiral needling type grounding device based on spark enhancement effect

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20181127

Termination date: 20190509

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