CN201213082Y

CN201213082Y - Puncture type lightning preventing insulator

Info

Publication number: CN201213082Y
Application number: CNU2008201270811U
Authority: CN
Inventors: 郑哲
Original assignee: HEFEI GULIFA ELECTRIC CO Ltd
Current assignee: GULIFA ELECTRICAL CO., LTD.
Priority date: 2008-06-24
Filing date: 2008-06-24
Publication date: 2009-03-25
Anticipated expiration: 2018-06-24

Abstract

The utility model relates to a puncture type lightningproof insulator which comprises a puncture type needle insulator, a pressing line cover plate, an arc ignition fork, a moment bolt, a grounding electrode and an insulating guard shield. The puncture type lightningproof insulator is characterized in that a hardware wire groove at the upper end of the puncture type needle insulator is internally provided with puncture teeth which are arranged in a mig shape, and the puncture teeth can penetrate a wire insulating layer which is installed in the wire groove under the matching of the pressing line cover plate and the moment bolt to form the electrical connection; one end of the arc ignition fork is connected with a hardware arranged at the upper end of the insulator by the moment bolt, and the other end forms a discharge gap with the grounding electrode on the hardware installed at the lower end of the insulator; the insulating guard shield wraps all the metal bare part at the upper end of the insulator except a discharging end of the arc ignition fork. Compared with the prior art, the utility model has the advantages of convenient installation, favorable electrical contact performance, remarkable lightening protection effect, and the like.

Description

A kind of penetration type anti-thunder insulator

Technical field

Utility model relates to the thunder resisting equipment that uses in the electric power networking, particularly relates to a kind of insulator of lightning protection, belongs to electric power transfer and safeguard technical field.

Background technology

In order to improve the safety of transmission of electricity electricity consumption, overhead transmission line will be realized insulating in the urban and rural power grids, so suspended insulated guide wire is used in a large number, but the lightning-caused breaking problem of suspended insulated guide wire is very outstanding.This is because direct lightning strike or lightning induced voltage at first puncture wire insulation and then cause insulator arc-over at lead and insulator connection place, makes the puncture place burning of electric arc at insulating barrier, blows lead in the extremely short time.Constantly there were the device research and development of insulated conductor lightning protection to use in recent years; denomination of invention is " a lightning protection pin insulator "; the patent No. is: the Chinese utility model patent of ZL200620162590.9 has been introduced a kind of piercing preventing arc insulator; it is characterized in that adopting the sterilization guard shield; wire clamp seat and place the mobile briquetting and the briquetting seat of its inside; the preventing arc rod; structures such as insulator part; overvoltage is delivered to the preventing arc rod by the wire clamp seat when making thunderbolt; between the metal cap on preventing arc rod and the insulator bottom gold utensil, discharge; thereby discharge lightning overvoltage protection insulated conductor; but it is unreliable and easily hinder lead to have puncture structure contact; metal cap has destroyed the sealing of electric insulator steel foot, and preventing arc rod such as can not change at shortcoming after damaging.

The utility model content

Technical problem to be solved in the utility model is, provide a kind of dependable performance, quick for installation, do not hinder lead, easy to maintenance, mechanical strength is high, the penetration type anti-thunder insulator of all insulation structure.

The technical solution adopted in the utility model is:

The utility model relates to a kind of penetration type anti-thunder insulator, includes penetration type pin insulator, line ball cover plate, striking fork, moment bolt, grounding electrode and insulating shield; Be provided with the puncture tooth that meter lattice shape is arranged in the upper end gold utensil wire casing of described penetration type pin insulator, the penetrable wire insulation that is installed in the wire casing forms and is electrically connected under the cooperation of described line ball lid and moment bolt; The stiff end of described striking fork is provided with two screws, closely links to each other with the upper end gold utensil of insulator by the moment bolt, and the other end is a discharge end, forms a discharging gap with the grounding electrode that is installed on the gold utensil of insulator lower end; Described insulating shield will wrap up all the exposed gold utensil parts of insulator upper end except that striking fork discharge end.

Wherein, be provided with some puncture teeth to upper process in the wire casing of described penetrating electrodes, the height of described puncture tooth is greater than the thickness of wire insulation, and the lead formation that can and be installed in the wire casing is electrically connected.

Wherein, described puncture tooth is a meter lattice shape arranged alternate in the wire casing of penetrating electrodes.

Wherein, the stiff end of described striking fork is the forked type structure, is provided with two screws, closely links to each other with the upper end gold utensil of insulator by the moment bolt, and the discharge end of striking fork forms a discharging gap with the grounding electrode that is installed on the gold utensil of insulator lower end.

Wherein, an end of described grounding electrode is a fork configuration, and an end is a camber structure that raises up, and can regulate the clearance distance of camber structure and striking fork discharge end in the installation site of insulator lower end by mobile fork configuration.

Wherein, described insulating shield will wrap up all the exposed metal parts of insulator upper end except that striking fork discharge end.

As mentioned above as can be known, have the utility model penetration type anti-thunder insulator of said structure characteristics, have technology to compare with oneself, the advantage that has is:

(1), because the puncture tooth in the penetrating electrodes wire casing has adopted a rice lattice shape to arrange, the easier insulating barrier that punctures into lead, and reduced damage to lead; The line ball lid that is positioned at lead top is not established the puncture tooth, so lead bigger not damage of top of stress when stressed, has prevented the reduction of lead tensile strength; Because puncture tooth and insulator upper end gold utensil are overall structure and are positioned at the lead below, be difficult for unclamping with lead, and electric current are directly guided corresponding grounding electrode into by the striking fork of its below.

Advantages such as (2), striking fork stiff end is forked type, and is provided with two screws and is connected by gold utensil on moment bolt and the insulator, has the mechanical strength height, and electric contact is reliable.

(3), grounding electrode adopts fork configuration to be installed on gold utensil below, insulator lower end, can reconcile the discharging gap distance, and not destroy the structural intergrity of insulator lower end gold utensil.

(4), striking fork and grounding electrode be individual components, be easy to during damage change.

(5), adopt owing to adopted insulating cover, make charged positions such as penetrating electrodes and gland be insulated cover and be wrapped in the inside, operation is safer in using.

(6), the utility model cost simple in structure, that manufacture is lower, installation convenient.

Description of drawings

Fig. 1 is the schematic diagram of the utility model penetration type anti-thunder insulator one embodiment;

Fig. 2 is the outward appearance front view of Fig. 1;

Fig. 3 is the side sectional view of Fig. 1;

Fig. 3 outward appearance end view that Fig. 4 is;

Fig. 5 does not install the partial top view of line ball lid for the utility model penetration type anti-thunder insulator;

Embodiment

Now the preferred embodiment shown in conjunction with the accompanying drawings is further described structure of the present utility model.

As seen from Figure 1, Figure 2, the utility model penetration type anti-thunder insulator mainly is made up of pin insulator 1, line ball lid 2, striking fork 3, two moment bolts 4, grounding electrode 5 and insulating shields 6.

Described pin insulator 1 has the puncture tooth, the both sides of its upper end gold utensil and line ball lid 2 have been equipped with two corresponding through holes, the both sides of the stiff end of described striking fork 3 be provided with two with the corresponding screw of above-mentioned through hole, described two moment bolts 4 can be screwed in the above-mentioned screw after by above-mentioned through hole.

By Fig. 3, Fig. 4, Fig. 5 as can be known, one wire casing is arranged at the top of pin insulator 1 upper end gold utensil, the radius of wire casing is identical with the radius of the maximum lead of being installed and used, and is provided with the puncture tooth of meter lattice shape arranged alternate to upper process in the wire casing, and the height of puncture tooth 7 slightly surpasses the thickness of wire insulation; 7 penetrable wire insulation and the lead formation that are installed in the wire casing of puncture tooth are electrically connected under the cooperation of above-mentioned line ball lid 2 and moment bolt 4.Therefore because puncture tooth 7 is a meter lattice shape arranged alternate, more easy and be difficult for damage wires when penetrating wire insulation; Because puncture tooth 7 is positioned at the lead below, be difficult for unclamping with lead, contact advantages such as reliable.

The stiff end of striking fork 3 is the forked type structure, and its both sides are provided with two screws, and striking fork 3 closely links to each other with the upper end gold utensil of insulator 1 under the effect of moment bolt 4.The discharge end of striking fork 3 is circular-arc to lower process.Grounding electrode 5 one ends are a forked type structure, be installed on the steel foot bolt of pin insulator 1, the other end is camber projection upwards, form a discharging gap with the discharge end of striking fork 3, and the distance that can regulate discharging gap by the installation site of mobile grounding electrode 5 forked type structures and pin insulator 1 steel pin.

Under normal operation conditions, because the existence of discharging gap does not have passing through of electric current; When producing lightning overvoltage on the insulated conductor, can overvoltage be directed to striking by puncture tooth 7 and pitch 3 discharge end, the gap discharge of pitching between 3 discharge ends and the grounding electrode 5 by striking discharges overvoltage, thereby has protected insulated conductor.

Because described striking fork 3 and grounding electrode 5 are the parts of absolute construction, do not destroy the inherent structure of pin insulator 1, thereby have guaranteed the machinery and the electric property of insulator; If multiple discharge can be changed these parts after causing striking fork 3 or grounding electrode 5 to damage, and is economical and convenient.

Described insulating shield 6 is the cap-like structure of a below opening, and the shape of opening and size are just pitched 3 adaptive with the top of pin insulator 1 and striking.It is hatch frame that 3 discharge end places are pitched in the lower end of insulating cover 6 and close striking; The both sides of insulating cover 6 are provided with outwardly directed downward-sloping cone-shaped structure, and its size is adaptive with the diameter range of suitable lead; The below of cone-shaped structure is provided with open seam, extend inwardly to the opening of insulating cover 6 belows, the both sides of open seam are provided with the flat band, be provided with a dog holes along band, nail is equipped with clasp nail in the hole, make insulating cover 6 be wrapped in anti-thunder insulator 1 upper end reliably and be fit to lead and preventing arc fork 3 passes, the utlity model has the high characteristic such as antifouling of all insulation thereby make.

The utility model penetration type anti-thunder insulator only illustrates some preferred embodiments in this manual, is not to its restriction.This professional and technical personnel can structurally make various variations or modification according to the present utility model design and spirit, for example changes the profile of silicon rubber umbrella cover or insulating shield.Therefore these must belong to protection range of the present utility model.

Claims

1, a kind of penetration type anti-thunder insulator is characterized in that: comprise piercing pin insulator (1), line ball lid (2), striking fork (3), moment bolt (4), grounding electrode (5) and insulating shield (6);

Be provided with some puncture teeth (7) to upper process in the wire casing of described piercing pin insulator (1) top gold utensil, the height of described puncture tooth is greater than the thickness of wire insulation; Described puncture tooth (7) penetrates wire insulation and lead formation is electrically connected, and this is electrically connected by described insulating shield (6) and wraps up.

2, penetration type anti-thunder insulator according to claim 1 is characterized in that: the stiff end of described striking fork (3) is provided with two screws, closely links to each other by the upper end gold utensil of described moment bolt (4) with described insulator (1); The other end of described striking fork (3) is a discharge end, forms a discharging gap with the grounding electrode (5) that is installed on the gold utensil of insulator (1) lower end.

3, penetration type anti-thunder insulator according to claim 1 is characterized in that: described puncture tooth (7) is a meter lattice shape arranged alternate in described wire casing.

4, penetration type anti-thunder insulator according to claim 1 is characterized in that: an end of described grounding electrode (5) is the forked type structure.