CN204537824U - A kind of novel transformer binding post splicing ear - Google Patents

Abstract

The utility model discloses a kind of novel transformer binding post splicing ear, it is characterized in that it comprises inclined floor (1), inclined floor (1) connects horizonal base plate (2), the junction of inclined floor (1) and horizonal base plate (2) forms knuckle (3), inclined floor (1) is provided with bolt hole (1-1), horizonal base plate (2) is provided with bolt hole (2-1), angle α between upper plate (1) and lower shoe (2) is by following formulae discovery: α=180 °-arctan (G/S) wherein G is the vertical height of the cable arc top of high-tension cable and the upper plane of transformer, S is the horizontal range on the high-pressure side binding post of transformer and the cable arc top of high-tension cable, the utility model structure is simple, easy for installation, mechanical strength increases, reduce site safety hidden danger, long service life.

Description

A kind of novel transformer binding post splicing ear

Technical field:

The utility model relates to a kind of novel transformer binding post splicing ear, is mainly used in the transformer station of electric power system, belongs to distribution technique field.

Background technology:

The effect of transformer starting voltage conversion in electric power system, transformer is connected with external cable by binding post, limit by aperture, intermediate demand installs a splicing ear additional, splicing ear mostly is copper and runs in, and play conduction and fix, its contact-making surface must be closely overheated to avoid, and through surface treatment, there is certain anticorrosive effect.

Traditional transformer binding post splicing ear is copper in line, for when there is no cable bend tension force, but appropriate cable does not bend the larger place of tension force, such as box type transformer, and 10kV cable end need be fixed on the binding post of high voltage side of transformer, connect according in line carrying out and fix, because space is comparatively narrow, must force cable bend, this adds increased the flexibility of cable, make transformer binding post be subject to high-tension for a long time, following hidden danger will be produced:

1) destroy binding post porcelain vase, reduce insulation level.

2) long-term crush seal insulation cushion, causes transformer leakage of oil.

3) the stressed flexural deformation of binding post, does not meet safe distance requirement.

4) installation difficulty is added.

If alleviate tie point tension force by the space expanding cable laying, cost so will be caused to increase, space resources is wasted, and increases erection difficulty, and it is worthless for therefore expanding cable laying space.

Utility model content:

The purpose of this utility model is to overcome the deficiency of above-mentioned prior art and provides that a kind of structure is simple, easy for installation, mechanical strength increases, reduce site safety hidden danger, the novel transformer binding post splicing ear of long service life.

The purpose of this utility model can be reached by following measure: a kind of novel transformer binding post splicing ear, it is characterized in that it comprises inclined floor, inclined floor connects horizonal base plate, the junction of inclined floor and horizonal base plate forms knuckle, inclined floor is provided with bolt hole, horizonal base plate is provided with bolt hole, and the angle α between upper plate and lower shoe is by following formulae discovery:

α=180°－ arctan(G/S)

Wherein G is the vertical height of the cable arc top of high-tension cable and the upper plane of transformer, and S is the horizontal range on the high-pressure side binding post of transformer and the cable arc top of high-tension cable.

In order to realize the purpose of this utility model further, the length L1 of described inclined floor is 10 ~ 15cm, and width W is 2.5cm, and horizonal base plate length L2 is 3 ~ 5cm, and width W is 2.5cm.

The utility model can produce following good effect compared with the prior art: what the utility model efficiently solved transformer binding post and cable end under varying environment is connected and fixed problem, the high-tension avoiding cable butting terminal in small space damages, improve the useful life of equipment, eliminate potential safety hazard, add tie point contact-making surface, avoid tie point fever phenomenon, thus reduce kwh loss, save entreprise cost.It has:

1. structure is simple, easy for installation.Traditional splicing ear is copper in line, and the utility model adds turning, and manufacturing process is simple, owing to decreasing the tension force of cable, therefore constructs in installation process easier.

2. applied widely.For the length of cable end under different installation environment and degree of crook, splicing ear knuckle angle can be determined, all can apply under various complex environment.

3. mechanical strength increases.Knuckle design not only increases the anti-deformation intensity of splicing ear itself, and its knuckle angle is determined by the length of cable end and degree of crook, reduce tension force suffered by binding post to greatest extent, thus add the overall mechanical strength of tie point, meet the requirement of mechanical strength under specific condition.

4. contact area increases, traditional transformer connection terminal makes binding post be subject to cable stretch impact for a long time, the deformation produced causes contact-making surface to reduce, contact point is easily made to generate heat, add kwh loss, the utility model splicing ear decreases the tension force that binding post is subject to, and makes both contacts more tight, avoids the problem that tie point is overheated.

Accompanying drawing illustrates:

Fig. 1 is structural representation of the present utility model;

Fig. 2 is for using transformer binding post of the present utility model and high-pressure side cable connection diagram.

Embodiment:

Below in conjunction with accompanying drawing, execution mode of the present utility model is elaborated:

Embodiment: a kind of novel transformer binding post splicing ear (see Fig. 1, Fig. 2), it comprises inclined floor 1, inclined floor 1 connects horizonal base plate 2, the junction of inclined floor 1 and horizonal base plate 2 forms knuckle 3, inclined floor 1 is provided with bolt hole 1-1, and horizonal base plate 2 is provided with bolt hole 2-1.The length L1 of inclined floor 1 is 10 ~ 15cm, and width W is 2.5cm, and horizonal base plate 2 length L2 is 3 ~ 5cm, and width W is 2.5cm, and the angle α between upper plate 1 and lower shoe 2 is determined by following computational process:

α=180°－ arctan(G/S)

Wherein G is the vertical height of the cable arc top of high-tension cable 4 and the upper plane of transformer 5, and S is the horizontal range on the high-pressure side binding post of transformer 5 and the cable arc top of high-tension cable 4.

Cable terminal, at the bolt hole 2-1 place of horizonal base plate 2, is arranged on the bolt hole 1-1 place of inclined floor 1, by bolted by the transformer high-voltage binding post floor installation that need install additional during use.

Claims (2)

1. a novel transformer binding post splicing ear, it is characterized in that it comprises inclined floor (1), inclined floor (1) connects horizonal base plate (2), the junction of inclined floor (1) and horizonal base plate (2) forms knuckle (3), inclined floor (1) is provided with bolt hole (1-1), horizonal base plate (2) is provided with bolt hole (2-1), and the angle α between upper plate (1) and lower shoe (2) is by following formulae discovery:

α=180°－ arctan(G/S)

Wherein G is the vertical height of the cable arc top of high-tension cable and the upper plane of transformer, and S is the horizontal range on the high-pressure side binding post of transformer and the cable arc top of high-tension cable.

2. a kind of novel transformer binding post splicing ear according to claim 1, it is characterized in that the length L1 of described inclined floor (1) is 10 ~ 15cm, width W is 2.5cm, and horizonal base plate (2) length L2 is 3 ~ 5cm, and width W is 2.5cm.