CN103545685B - A kind of low pressure operation earthing method - Google Patents

A kind of low pressure operation earthing method Download PDF

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Publication number
CN103545685B
CN103545685B CN201310487455.6A CN201310487455A CN103545685B CN 103545685 B CN103545685 B CN 103545685B CN 201310487455 A CN201310487455 A CN 201310487455A CN 103545685 B CN103545685 B CN 103545685B
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China
Prior art keywords
screw cap
earthing
cap type
earthing rod
grounding
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CN201310487455.6A
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Chinese (zh)
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CN103545685A (en
Inventor
陈丽婷
蔡跃群
蔡奕龙
李庆洪
潘顺发
佘永红
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State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Shishi Power Supply Co of State Grid Fujian Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Shishi Power Supply Co of State Grid Fujian Electric Power Co Ltd
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Priority to CN201310487455.6A priority Critical patent/CN103545685B/en
Publication of CN103545685A publication Critical patent/CN103545685A/en
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Abstract

The invention discloses a kind of low pressure operation earthing method, first screw cap type earthing rod is utilized, each earth connection copper tip of that one end of short-circuit grounding wire bull bifurcated is inserted in the small end of the grounding head of screw cap type earthing rod, then joint pin and grounding head are connected to form conductor end, that one end short-circuit grounding wire with earthing clamp is connected on equipment ground body, after identifying low-voltage equipment true no-voltage, on the wherein bus of a phase using special isolation hook stick screw cap type earthing rod to be fastened on low-voltage equipment or the bolt of conductor; The jacket casing of special isolation hook stick is then used to be located on the nut of screw cap type earthing rod, tightening nut, the joint pin of screw cap type earthing rod and grounding head are screwed, the present invention can adopt the dedicated nut formula earthing rod of different size, adopt fastening-type connected mode with the bus bar of low voltage electrical equipment or conductor stud, be connected firmly, contacting section is even, effective cross-section is maximum, and reliability is high.

Description

A kind of low pressure operation earthing method
Technical field
The present invention relates to a kind of low pressure operation method, particularly a kind of low pressure operation earthing method.
Background technology
At present, temporary grounding and the short circuit of most 400V ammeter box, switch-box, comprehensive distribution box, step down side electric equipment conductor adopt conventional portable earth connection, the Portable short-circuit grounding wire of current domestic most manufacturers design exploitation, the connection of conductor end generally adopts pressure type wire clamp to carry out clamping.Therefore based on the earth connection of this structural design, structure influence by bonding conductor is larger, particularly low voltage electrical equipment, exists that conductor is little, bus interphase structure is compact, installing space is narrow and small, easily causes that to connect contact-making surface uneven, effective cross-section is not enough, the problem such as easily come off, so once equipment is sent a telegram here suddenly, possibly cannot effectively realize power ground and short circuit object, the personal security worked on equipment can not be ensured, cause personal injury.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, and provide one to be connected firmly, the low pressure operation Special grounding method that applied widely, fail safe is high.
A kind of low pressure operation earthing method, is characterized in that, first screw cap type earthing rod is utilized, each earth connection copper tip of that one end of short-circuit grounding wire bull bifurcated is inserted in the small end of the grounding head of screw cap type earthing rod, then joint pin and grounding head are connected to form conductor end, and temporarily can not lock between joint pin and grounding head, that one end then short-circuit grounding wire with earthing clamp is connected on equipment ground body, after identifying the true no-voltage of low-voltage equipment, hand-held special isolation hook stick immediately, use the large end of multidiameter that the little interior polygonal jacket casing of special isolation hook stick is sleeved on screw cap type earthing rod, on the wherein bus of phase screw cap type earthing rod being fastened on low-voltage equipment or the bolt of conductor, then toward insulating bar in post-tensioning, make little interior polygonal sleeve retrude, expose the polygonal sleeve of imperial palace, the polygonal jacket casing of imperial palace of special isolation hook stick is then used to be located on the nut of screw cap type earthing rod, tightening nut, the joint pin of screw cap type earthing rod and grounding head are screwed, thus is grounded the installation of line
Described screw cap type earthing rod includes joint pin and grounding head, it is outer polygonal sleeve that described joint pin includes outer peripheral face, barrel bore is provided with internal thread, the internal thread of that one end that barrel bore is connected with bus bar or wire bolt matches with the bolt on bus bar or conductor, the other end of barrel bore is connected with grounding head, described grounding head is a kind of multidiameter, the outer peripheral face of the large end of multidiameter is outer polygonal, be provided with the external screw thread matched with barrel bore screw thread at multidiameter small end, the step place of multidiameter is provided with nut;
Described special isolation hook stick includes mutual sheathing external insulation action bars together, the leading section of insulating bar is provided with the polygonal sleeve of imperial palace outside, described interior insulating bar can do stretching motion in insulating bar outside and be longer than external insulation action bars, the leading section of interior insulating bar is provided with little interior polygonal sleeve, little interior polygonal sleeve can pass the polygonal sleeve of imperial palace, interior insulating bar is provided with the location notch of one or more, on insulating bar, relevant position is provided with alignment pin outside, this alignment pin can extend into the location notch of interior insulating bar, nut on the polygonal sleeve of described imperial palace and screw cap type earthing rod grounding head is used in combination, the outer polygonal of little interior polygonal sleeve and the large end of screw cap type earthing rod grounding head matches,
One end of described short-circuit grounding wire is connected with earthing clamp, and the other end of described short-circuit grounding wire separates and is provided with multiple links, and link is provided with earth connection copper tip.
The side of the joint pin of described screw cap type earthing rod is provided with holding screw.
After the joint pin of screw cap type earthing rod and grounding head are locked and put in place, then screw the screw of side, both fitnesss can be improved.
The outer peripheral face of the external insulation action bars of special isolation hook stick is provided with insulating case.
Insulating case is set in the periphery of the outer action bars of special isolation hook stick, the handling of insulating bar can be improved on the one hand, also can improve the insulating properties of insulated operating rod on the other hand.
In special isolation hook stick, the exposed junction of insulating bar is provided with insulating case.
Described earthing clamp is a kind of spiral compression formula wire end wire clamp.
Described screw cap type earthing rod has the Multiple Type of different size, and corresponding special isolation hook stick also has the Multiple Type of multiple different size.
Insulating case is arranged with in the periphery of the short-circuit grounding wire of the close bull crotch of short-circuit grounding wire.
Short-circuit grounding wire arranges insulating case, can further improve the insulating properties at this place, operate and the damage that causes because need often to hold to avoid herein.
In sum, the present invention's following advantage compared to existing technology:
Low pressure operation earthing method of the present invention, 1, the dedicated nut formula earthing rod of different size can be adopted, adopt fastening-type connected mode with the bus bar of low voltage electrical equipment or conductor stud, be connected firmly, contacting section is even, and effective cross-section is maximum, and reliability is high.
2, dedicated nut formula earthing rod can according to the conductor stud specification of low voltage electrical equipment with the use of, applied widely.
3, installation process adopts dedicated operations rod, and coordinate special isolation operating sleeve, not easily touch the conductor of electric equipment, fail safe is high.
Low pressure operation method of the present invention in use, is connected firmly, and contact is good, even if sent a telegram here suddenly by the equipment external cable of short circuit, also can carry out ground connection and short circuit, ensure the personal security of installation on this ammeter box conductor.This product embodies grounding technology progress, has good application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of special isolation hook stick of the present invention.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the structural representation of the joint pin of screw cap type earthing rod.
Fig. 4 is the structural representation of the grounding head of screw cap type earthing rod.
Fig. 5 is the assembling schematic diagram of ground wire device special for low voltage work.
Fig. 6 is another angle schematic diagram of ground wire device special for low voltage work.
Little interior polygonal sleeve 44 imperial palace polygonal sleeve 45 alignment pin 46 insulating case 5 screw cap type earthing rod 51 joint pin 511 sleeve 52 grounding head 521 multidiameter of insulating bar 42 external insulation action bars 43 large end 522 multidiameter small end 523 nut in label declaration 1 short-circuit grounding wire 2 earthing clamp 3 earth connection copper tip 4 insulated operating rod 41.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
A kind of low pressure operation earthing method, first screw cap type earthing rod 5 is utilized, each earth connection copper tip 3 of that one end of short-circuit grounding wire 1 bull bifurcated is inserted in the small end of the grounding head of screw cap type earthing rod, then joint pin and grounding head are connected to form conductor end, and temporarily can not lock between joint pin and grounding head, that one end then short-circuit grounding wire with earthing clamp is connected on equipment ground body, after identifying the true no-voltage of low-voltage equipment, hand-held special isolation hook stick immediately, use the large end of multidiameter that the little interior Hexagonal jacket cover of special isolation hook stick is sleeved on screw cap type earthing rod, on the wherein bus of phase screw cap type earthing rod being fastened on low-voltage equipment or the bolt of conductor, then toward insulating bar in post-tensioning, make little interior Hexagonal jacket retrude, expose imperial palace Hexagonal jacket, the imperial palace Hexagonal jacket of special isolation hook stick is then used to be set on the nut of screw cap type earthing rod, tightening nut, the joint pin of screw cap type earthing rod and grounding head are screwed, thus is grounded the installation of line
Described screw cap type earthing rod 5 includes joint pin 51 and grounding head 52, described joint pin includes the sleeve 511 that outer peripheral face is outer-hexagonal, barrel bore is provided with internal thread, the internal thread of that one end that barrel bore is connected with bus bar or wire bolt matches with the bolt on bus bar or conductor, the other end of barrel bore is connected with grounding head 52, described grounding head is a kind of multidiameter, the outer peripheral face of the large end 521 of multidiameter is outer-hexagonal shape, the external screw thread matched with barrel bore screw thread is provided with at multidiameter small end 522, the step place of multidiameter is provided with nut 523,
Described special isolation hook stick 4 includes mutual sheathing external insulation action bars together, the leading section of insulating bar 42 is provided with imperial palace Hexagonal jacket 44 outside, described interior insulating bar 41 can do stretching motion in insulating bar outside and be longer than external insulation action bars, the leading section of interior insulating bar is provided with little interior Hexagonal jacket 43, little interior Hexagonal jacket can pass imperial palace Hexagonal jacket, interior insulating bar is provided with the location notch of one or more, on insulating bar, relevant position is provided with alignment pin 45 outside, this alignment pin can extend into the location notch of interior insulating bar, nut on described imperial palace Hexagonal jacket and screw cap type earthing rod grounding head is used in combination, the outer-hexagonal shape of little interior Hexagonal jacket and the large end of screw cap type earthing rod grounding head matches,
One end of described short-circuit grounding wire 1 is connected with earthing clamp 2, and the other end of described short-circuit grounding wire separates and is provided with multiple links, and link is provided with earth connection copper tip 3.The side of the joint pin of described screw cap type earthing rod is provided with holding screw.The outer peripheral face of the external insulation action bars of special isolation hook stick is provided with insulating case 46.In special isolation hook stick, the exposed junction of insulating bar is provided with insulating case.Described earthing clamp is a kind of spiral compression formula wire end wire clamp.Described screw cap type earthing rod has the Multiple Type of different size, and corresponding special isolation hook stick also has the Multiple Type of multiple different size.Insulating case is arranged with in the periphery of the short-circuit grounding wire of the close bull crotch of short-circuit grounding wire.
It is same as the prior art that the present embodiment does not state part.

Claims (7)

1. a low pressure operation earthing method, is characterized in that, first screw cap type earthing rod is utilized, each earth connection copper tip of that one end of short-circuit grounding wire bull bifurcated is inserted in the small end of the grounding head of screw cap type earthing rod, then joint pin and grounding head are connected to form conductor end, and temporarily can not lock between joint pin and grounding head, that one end then short-circuit grounding wire with earthing clamp is connected on equipment ground body, after identifying the true no-voltage of low-voltage equipment, hand-held special isolation hook stick immediately, use the large end of multidiameter that the little interior polygonal jacket casing of special isolation hook stick is sleeved on screw cap type earthing rod, on the wherein bus of phase screw cap type earthing rod being fastened on low-voltage equipment or the bolt of conductor, then toward insulating bar in post-tensioning, make little interior polygonal sleeve retrude, expose the polygonal sleeve of imperial palace, the polygonal jacket casing of imperial palace of special isolation hook stick is then used to be located on the nut of screw cap type earthing rod, tightening nut, the joint pin of screw cap type earthing rod and grounding head are screwed, thus is grounded the installation of line
Described screw cap type earthing rod includes joint pin and grounding head, it is outer polygonal sleeve that described joint pin includes outer peripheral face, barrel bore is provided with internal thread, the internal thread of barrel bore one end matches with the bolt on bus bar or conductor, the other end of barrel bore is connected with grounding head, described grounding head is a kind of multidiameter, the outer peripheral face of the large end of multidiameter is outer polygonal, be provided with the external screw thread matched with barrel bore screw thread at multidiameter small end, the step place of multidiameter is provided with nut;
Described special isolation hook stick includes mutual sheathing external insulation action bars together, the leading section of insulating bar is provided with the polygonal sleeve of imperial palace outside, described interior insulating bar can do stretching motion in insulating bar outside and be longer than external insulation action bars, the leading section of interior insulating bar is provided with little interior polygonal sleeve, little interior polygonal sleeve can pass the polygonal sleeve of imperial palace, interior insulating bar is provided with the location notch of one or more, on insulating bar, relevant position is provided with alignment pin outside, this alignment pin can extend into the location notch of interior insulating bar, nut on the polygonal sleeve of described imperial palace and screw cap type earthing rod grounding head is used in combination, the outer polygonal of little interior polygonal sleeve and the large end of screw cap type earthing rod grounding head matches,
One end of described short-circuit grounding wire is connected with earthing clamp, and the other end of described short-circuit grounding wire separates and is provided with multiple links, and link is provided with earth connection copper tip.
2. low pressure operation earthing method according to claim 1, is characterized in that; The side of the joint pin of described screw cap type earthing rod is provided with holding screw.
3. low pressure operation earthing method according to claim 2, is characterized in that; The outer peripheral face of the external insulation action bars of special isolation hook stick is provided with insulating case.
4. low pressure operation earthing method according to claim 3, is characterized in that; In special isolation hook stick, the exposed junction of insulating bar is provided with insulating case.
5. low pressure operation earthing method according to claim 4, is characterized in that; Described earthing clamp is a kind of spiral compression formula wire end wire clamp.
6. low pressure operation earthing method according to claim 5, is characterized in that: described screw cap type earthing rod has the Multiple Type of different size, and corresponding special isolation hook stick also has the Multiple Type of multiple different size.
7. low pressure operation earthing method according to claim 6, is characterized in that: be arranged with insulating case in the periphery of the short-circuit grounding wire of the close bull crotch of short-circuit grounding wire.
CN201310487455.6A 2013-10-17 2013-10-17 A kind of low pressure operation earthing method Active CN103545685B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104112919A (en) * 2014-07-29 2014-10-22 国网福建晋江市供电有限公司 Ground wire special for low-voltage meter box
CN106099443A (en) * 2016-08-03 2016-11-09 深圳供电局有限公司 A kind of switching device for ground wire operating lever
CN106549237B (en) * 2016-08-31 2018-08-24 河南送变电建设有限公司 A kind of power ground column of power engineering

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN2401999Y (en) * 1999-12-11 2000-10-18 湖南省常德电业局 Short circuit grounding wire with electricity detecting function
CN2582193Y (en) * 2002-11-25 2003-10-22 浙江永锦电力器材有限公司 Short-circuit grounding wire for line
CN202167633U (en) * 2011-08-09 2012-03-14 马燕波 Portable short-circuit grounding wire device
CN102969584A (en) * 2012-12-18 2013-03-13 黄涌苪 Middle-section rotation type short-circuit grounding device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH057826B2 (en) * 1989-06-20 1993-01-29 Nipponkai Densoku Kk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2401999Y (en) * 1999-12-11 2000-10-18 湖南省常德电业局 Short circuit grounding wire with electricity detecting function
CN2582193Y (en) * 2002-11-25 2003-10-22 浙江永锦电力器材有限公司 Short-circuit grounding wire for line
CN202167633U (en) * 2011-08-09 2012-03-14 马燕波 Portable short-circuit grounding wire device
CN102969584A (en) * 2012-12-18 2013-03-13 黄涌苪 Middle-section rotation type short-circuit grounding device

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