CN201336385Y

CN201336385Y - Bushing-type portable grounding wire

Info

Publication number: CN201336385Y
Application number: CNU2008201237014U
Authority: CN
Inventors: 王琳
Original assignee: Beijing Electric Power Corp
Current assignee: Beijing Electric Power Corp; State Grid Corp of China SGCC
Priority date: 2008-11-10
Filing date: 2008-11-10
Publication date: 2009-10-28
Anticipated expiration: 2018-11-10

Abstract

The utility model discloses a bushing-type portable grounding wire. The grounding wire comprises a first connecting part (1), a second connecting part (2) and a lead wire part (3). The first connecting part (1) is used for connecting electric equipment, the second connecting part (2) is used for connecting a ground potential point, the lead wire part (3) is connected between the first connecting part (1) and the second connecting part (2), the first connecting part (1) is bushing-shaped, a threaded hole (121) is arranged at the inner part of the first connecting part (1), and the threaded hole (121) is used for connecting a protruding bolt on the electric equipment. The bushing-type portable grounding wire has the advantages of easy installing and reliable connecting.

Description

The portable earth connection of thimble tube

Technical field

The utility model relates to a kind of portable earth connection.

Background technology

In electric power system, earth connection is the most safe and reliable protected mode, is the effective measures that guarantee staff's life security.In 110kV and the above electrical network, the use of ground wire is gradually improved, most ground connection dollies and earthing isolators of adopting.But in 10kV and 0.4kV electric power system, still there are many deficiencies in the use aspect of ground wire.

At present, in the interruption maintenance work that opens and closes station, switchgear house, case change etc., widely used is the portable earth connection of pincers type.

The portable earth connection of pincers type comprises clamp, conductor part and splicing ear.Wherein connect lead clamp is linked to each other with splicing ear, clamp links to each other with bolt on the electric equipment and splicing ear links to each other with ground wire.The ground connection that like this, promptly can guarantee electric equipment connects.But because the jaw bore is less, the afterbody broad is clipped on the screw firmly inadequately, tends to come off voluntarily.If be clipped on the hard bus; because the busbar phase spacing is less; width is not enough; can only clamp half bus from the side; security performance reduces greatly, as long as the staff has slight bumping, ground wire and electric equipment is broken away from; make the staff lose the ground wire protection, the accident of human electric shock is very easily taken place.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of portable earth connection of reliable thimble tube that is easy to install, connect.For solving the problems of the technologies described above, the utility model provides a kind of thimble tube portable earth connection, and it comprises: first connecting portion is used for being connected with electric equipment; Second connecting portion, be used for etc. ground potential points be connected; And conductor part, be connected between first connecting portion and second connecting portion, first connecting portion is a cannula-like, its inside have be used for electric equipment on outstanding bolted screwed hole.

Preferably, first connecting portion comprises: outer tube is connected with conductor part; And inner sleeve, being arranged in the outer tube, screwed hole is arranged on the inner sleeve.

Preferably, first connecting portion comprises one group of inner sleeve, and each inner sleeve has the screwed hole of different size respectively, have with electric equipment on an inner sleeve of the screwed hole that is complementary of outstanding bolt optionally be installed in the outer tube.

Preferably, an end of inner sleeve is provided with along the first laterally projecting cross bar portion.

Preferably, the side of outer tube is provided with horizontal boss, and laterally boss is provided with the fixture that is used for fixing conductor part.

Preferably, second connecting portion comprises: body, be connected with conductor part, and it has the accommodation section; And screw rod, being installed on the body, the one end extends in the accommodation section.

Preferably, that end that extends in the accommodation section of screw rod is provided with pressure certainly, and the opposite other end is provided with the second cross bar portion.

Preferably, the bottom side of the accommodation section of body has detent.

Preferably, conductor part comprises: a main line part, and an end is connected with second connecting portion, three branch line portions, one end is connected with the other end of main line part, and the other end connects corresponding one first connecting portion respectively, and each the first pontes with in the three-phase of electric equipment corresponding one is not connected.

Preferably, the portable earth connection of this thimble tube also comprises the insulation joystick, the tubular head that it has rod body part and is connected an end of rod body part, and the outboard end of tubular head has draw-in groove.

The utlity model has following beneficial effect:

Is connected with outstanding bolt on the electric equipment by cannula-like first connecting portion according to thimble tube earth connection of the present utility model, can makes things convenient for and realize ground wire connection, assurance equipment ground effectively.

This thimble tube earth connection comprises sleeve pipe, conductor part and splicing ear.Described conductor part links to each other sleeve pipe with splicing ear, described sleeve pipe replaces the clamp of former pincers type earth connection to link to each other with bolt on the electric equipment, described splicing ear with etc. ground potential points link to each other.The ground connection that can realize electric equipment so effectively connects.

Wherein, sleeve pipe comprises inner sleeve and outer tube.One side of outer tube is provided with horizontal boss, and fixture is set on it, can be connected to the connection lead.Inner sleeve is arranged in the outer tube, its inside be provided with can with the screwed hole of bolted.Inner sleeve can disassemble from outer tube.According to the difference of the bolt specification on the electric equipment, corresponding to different screwed hole internal diameters, inner sleeve can have different specifications.And the upper end of inner sleeve is provided with cross bar portion, can use the insulation joystick that sleeve pipe is fixed on the bolt of electric equipment in the cross bar portion.

Splicing ear has body and threaded shank.Described body is provided with and is connected the horizontal boss that lead links to each other, and is provided with the accommodation section, and wherein the bottom side of accommodation section has detent, is used to locate ground wire.Threaded shank can be rotated mobile up and down, and the one end extends to the described accommodation section and is provided with briquetting in this side, can be used for compressing ground wire, and its other end has cross bar, and rotatable this cross bar and move up and down threaded shank compresses ground wire or unclamps.

When the three-phase of electric equipment all needs ground connection, can use three sleeve pipes.At this moment, connect lead and have a main line part and three branch line portions, wherein an end of main line part links to each other with splicing ear, and the other end of main line part links to each other with three branch line portions, and the other end of three branch line portions then is connected to corresponding sleeve pipe respectively.At this moment, three sleeve pipes are connected to respectively on the three-phase of electric equipment, have promptly realized the three-phase ground connection of electric equipment.

In addition, the staff can utilize the insulation joystick that sleeve pipe is fixed on the electric equipment.This insulating bar joystick has rod body part and tubular head, and the outboard end of tubular head has draw-in groove, it can be stretched on the cross bar of inner sleeve into.Like this, only need to rotate this insulation joystick, sleeve pipe can be fixed on the bolt of electric equipment.

The ground connection of the electric equipment of realizing according to the utility model connects, easy for installation, and solid and reliable, can prevent that operations staff's hanging ground-wire mistiming from bumping charging equipment, electric shock accidents takes place, and can prevent from again to bump the possibility that makes ground wire disengaging electric equipment because of mistake when the staff from working at the scene.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 shows the connection layout according to the portable earth connection of thimble tube of an exemplary embodiment of the present utility model.

Fig. 2 shows the view according to the sleeve pipe of an exemplary embodiment of the present utility model.

Fig. 3 shows the view according to splicing ear of the present utility model.

Fig. 4 shows the view according to insulation joystick of the present utility model.

Embodiment

Fig. 1 shows the connection layout according to the portable earth connection of thimble tube of an exemplary embodiment of the present utility model.The three-phase thimble tube portable earth connection that be used for three-phase ground connection of the portable earth connection of thimble tube in the present embodiment in switchgear, using.The portable earth connection of this three-phase is divided into three parts, comprises sleeve pipe (first connecting portion) 1, connects lead (conductor part) 3 and splicing ear (second connecting portion) 2.Wherein, three sleeve pipes 1 are connected on the outstanding bolt of three-phase of electric equipment, and the connection lead 3 that is fixed on the sleeve pipe links with splicing ear 2, and splicing ear 2 links to each other with ground wire.Like this, electric current just can flow through ground wire by sleeve pipe 1, connection lead 3 and splicing ear 2, can guarantee the reliable ground of power failure equipments effectively.

Wherein, conductor part 3 comprises main line part 31 and three branch line portions 32.Wherein, an end of main line part 31 links to each other with splicing ear 2, and the other end links to each other with three branch line portions 32; One end of three branch line portions 32 links to each other with main line part, and an end separately links to each other respectively with three sleeve pipes 1.

Fig. 2 shows the view according to the sleeve pipe of an exemplary embodiment of the present utility model.This sleeve pipe 1 comprises outer tube 11 and inner sleeve 12.Wherein, outer tube 11 is connected with conductor part 3, and its side is provided with horizontal boss 111, and laterally boss 111 is provided with the fixture 112 that is used for fixing conductor part 3, and the inside of outer tube can be shape of threads, is used for linking to each other with inner sleeve 12.Inner sleeve 12 is arranged in the outer tube 11, its inside and outside shape of threads that all can be, its outside is and the corresponding identical specification in the inside of outer tube 11, its inside has the different screwed holes 121 with different size of specification according to the bolt on the electric equipment, therefore can select to have the inner sleeve 12 of the screwed hole 121 of corresponding specification, be substituted on the outer tube 11.In addition, an end of inner sleeve is provided with along laterally projecting cross bar portion 13, can use insulation joystick 4 to be fixed on the electric equipment.

Fig. 3 shows the view according to splicing ear of the present utility model.Splicing ear 2 comprises body 21 and screw rod 22.Wherein, body is connected with conductor part 3, and it has accommodation section 211, and the bottom side of accommodation section 211 has detent 212, is used to locate ground wire.Screw rod 22 is installed on the body 21, the one end extends in the accommodation section 211, and has briquetting 24 at this end, has cross bar 23 at the other end, can screw rod be moved up and down by rotating horizontal pole 23, when moving down, briquetting 24 also will be arranged in groove 212 thereupon moving down ground wire compresses, when moving up, line releasably.

Fig. 4 shows the view according to insulation joystick of the present utility model.Insulation joystick 4 has rod body part 41 and is connected one section tubular head 42 of rod body part 41, the outside of tubular head 42 has draw-in groove 421, cross bar on the inner sleeve 12 13 can not advanced in this draw-in groove 421, at this moment, rotate insulation joystick 4, inner sleeve 12 also rotates thereupon, thereby inner sleeve 12 can be connected on the bolt of electric equipment.

, and have on the electric equipment under the situation of outstanding bolt electric equipment ground connection at needs, all can use the utility model or corresponding construction of the present utility model or mapped structure and realize.

Though described the utility model, be to be understood that the utility model is not limited to the disclosed embodiments and accompanying drawing, but covered all modifications and the distortion that drops in the utility model spirit and scope in conjunction with present embodiment.

Claims

1. A casing-type portable ground wire, comprising:

The first connecting part (1), used for connecting with electrical equipment;

The second connecting part (2) is used for connecting with the equipotential point; and

a wire part (3), connected between the first connection part (1) and the second connection part (2),

It is characterized in that the first connecting part (1) is in the shape of a sleeve, and has a threaded hole (121) inside it for connecting with a protruding bolt on the electrical equipment.

2. The sleeve-type portable ground wire according to claim 1, characterized in that, the first connecting part (1) comprises:

an outer sleeve (11), connected to said wire portion (3); and

The inner sleeve (12) passes through the outer sleeve (11), and the threaded hole (121) is arranged on the inner sleeve (12).

3. The bushing-type portable ground wire according to claim 2, characterized in that, the first connecting part (1) comprises a set of inner bushings (12), and each inner bushing (12) Each has threaded holes (121) of different specifications, and one of the inner sleeves (12) with threaded holes (121) matching the protruding bolts on the electrical equipment is selectively installed on the outer sleeve (11) )middle.

4. The sleeve-type portable ground wire according to claim 2, characterized in that, one end of the inner sleeve (12) is provided with a first cross bar portion (13) protruding in the transverse direction.

5. The sleeve-type portable ground wire according to claim 2, characterized in that, the side of the outer sleeve (11) is provided with a transverse boss (111), and the transverse boss (111) is provided with a A fixing piece (112) for fixing the wire part (3).

6. The bushing-type portable ground wire according to claim 1, characterized in that, the second connecting part (2) comprises:

a body part (21), connected to the wire part (3), which has a receiving part (211); and

The screw (22) is installed on the body part (21), and one end thereof extends into the accommodating part (211).

7. The sleeve-type portable grounding wire according to claim 6, characterized in that: the end of the screw (22) extending into the accommodating portion (211) is provided with a pressing block (24), on the contrary The other end is provided with a second crossbar part (23).

8. The bushing-type portable ground wire according to claim 6, characterized in that: the bottom side of the housing part (211) of the body part (21) has a positioning groove (212).

9. The bushing-type portable ground wire according to claim 1, characterized in that, the wire part (3) comprises:

a main line part (31), one end of which is connected to the second connecting part (2),

Three branch line parts (32), one end is connected to the other end of the main line part (31), and the other end is respectively connected to a corresponding one of the first connecting parts (1), each of the first connecting parts (1) They are respectively connected to a corresponding one of the three phases of the electrical equipment.

10. The sleeve-type portable ground wire according to any one of claims 1 to 9, further comprising:

An insulating joystick (4), which has a rod body (41) and a tubular head (42) connected to one end of the rod body (41), the outer end of the tubular head (42) has a draw groove ( 421).