CN206961660U

CN206961660U - A kind of porcelain shell for voltage mutual inductor

Info

Publication number: CN206961660U
Application number: CN201720342599.6U
Authority: CN
Inventors: 席云彦
Original assignee: XUCHANG ZHONGHENG ELECTRICAL CO Ltd
Current assignee: XUCHANG ZHONGHENG ELECTRICAL CO Ltd
Priority date: 2017-04-01
Filing date: 2017-04-01
Publication date: 2018-02-02
Anticipated expiration: 2027-04-01

Abstract

It the utility model is related to a kind of porcelain shell for voltage mutual inductor, primary connection bolt including insulator body and positioned at insulator body upper end, the insulator body interior is hollow structure, outside integral molding is provided with multiple annulus, primary connection bolt is provided with the center of the insulator body upper surface, the annulus is from top to bottom evenly distributed on the outer surface of insulator body, the annulus is inner to be connected with insulator body integral type, outer end is in arc structure, and the annulus centre position is provided with downward circular groove；The utility model have it is rational in infrastructure and on its original architecture basics increase creep age distance the advantages of.

Description

A kind of porcelain shell for voltage mutual inductor

Technical field

The utility model belongs to voltage transformer technical field, and in particular to a kind of porcelain shell for voltage mutual inductor.

Background technology

Transformer is the equipment of scaling transformation voltage or electric current, its function mainly by high-tension electricity or high current in proportion Be transformed into standard small voltage or standard small electric current, so as to realize the standardization of measuring instrumentss, protection equipment and automatic control equipment, Miniaturization；When carrying out structure design to transformer, creep age distance is one of factor considered, and creep age distance is along insulating surface Beeline between two conductive parts measured, for high voltage potential transformer, between two HV Terminals, distance is very It is small, it is necessary to spacing between the conductive component that tightens control, so as to ensure the creep age distance between conductive component in prescribed limit, because This, is often realized using distance is extended, but simple extension distance frequently can lead to the increase of equipment volume, and equipment uses Pour the problem of material increases；To solve the above problems, exploitation mutual induction of voltage a kind of rational in infrastructure and that creep age distance can be increased Device insulator is necessary.

Utility model content

The purpose of this utility model is for overcome the deficiencies in the prior art, and provides a kind of rational in infrastructure and can increase and climb The porcelain shell for voltage mutual inductor of electrical distance.

What the purpose of this utility model was realized in：A kind of porcelain shell for voltage mutual inductor, including insulator body and positioned at porcelain The primary connection bolt of body upper end is covered, the insulator body interior is hollow structure, and outside integral molding is provided with multiple Annulus, is provided with primary connection bolt on the center of the insulator body upper surface, distal process on the primary connection bolt For the insulator body exterior, lower end is located at the insulator body interior and is connected with a wound around coil, and the annulus is by upper The outer surface of the insulator body is evenly distributed under, the annulus is inner to be connected with the insulator body integral type, outer end In arc structure, the annulus centre position is provided with downward circular groove.

The junction of the primary connection bolt and the insulator body sets the neck of oriented axis direction, it is described once Connected between connection bolt and the insulator body by neck with snap ring inserted type, the snap ring is upper with the insulator body Surface, which is fixed, to be bonded.

Its thickness keeps constant to the annulus from inside to outside.

The groove is identical with the thickness of the annulus to the depth capacity of lower recess.

The beneficial effects of the utility model：The utility model employs the annulus in the outside integral molding of insulator body It is upper set groove mode, increase its creep age distance, to solve because creep age distance is too small, and use extend terminal spacing from Mode is realized, and then causes the increase of equipment volume, and equipment use pours the problem of material increases；Total, the utility model tool Have it is rational in infrastructure and on its original architecture basics increase creep age distance the advantages of.

Brief description of the drawings

Fig. 1 is front view of the present utility model.

Fig. 2 is the sectional view of insulator binding post in the utility model.

Fig. 3 is the structure chart of snap ring and neck in the utility model

In figure：1st, insulator body 11, annulus 12, groove 13, snap ring 2, primary connection bolt 21, neck.

Embodiment

The utility model is described further below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, Figure 3 shows：A kind of porcelain shell for voltage mutual inductor, including insulator body 1 and positioned at the upper end of insulator body 1 Primary connection bolt 2, the inside of the insulator body 1 is hollow structure, and outside integral molding is provided with multiple annulus 11, institute State and primary connection bolt 2 is provided with the center of the upper surface of insulator body 1, the upper end of primary connection bolt 2 protrudes from Outside the insulator body 1, lower end is connected positioned at the inside of insulator body 1 with a wound around coil, and the annulus 11 is by upper The outer surface of the insulator body 1 is evenly distributed under, the annulus 11 is inner to be connected with the integral type of insulator body 1, Outer end is in arc structure, and the centre position of annulus 11 is provided with downward circular groove 12, by the effect of groove 12, is increased Add the distance between two conductive parts, so as to increase its creep age distance.

The junction of the primary connection bolt 2 and the insulator body 1 sets the neck 21 of oriented axis direction, described Connected between primary connection bolt 2 and the insulator body 1 by neck 21 with the inserted type of snap ring 13, the snap ring 13 with it is described The upper surface of insulator body 1, which is fixed, to be bonded；First, using the connection of snap ring 13 and neck 21, primary connection bolt 2 is consolidated It is fixed, then, snap ring 13 is fixed on to the upper surface of insulator body 1 by cohesive mode, completes the fixation to snap ring 13, it is described Its thickness keeps constant, depth capacity and the thickness phase of the annulus 11 of the groove 12 to lower recess to annulus 11 from inside to outside Together.

Specific embodiment of the present utility model is：First, snap ring 13 is connected with the inserted type of neck 21, by primary connection spiral shell The one end of bolt 2 is goed deep into inside insulator body 1, and the other end protrudes from insulator body 1, then, by the upper table of snap ring 13 and insulator body 1 Face is fixed by cohesive mode, by the effect of snap ring 13, is made fixed between insulator body 1 and primary connection bolt 2 Connection, during use, the groove 12 that is set on the annulus 11 by using the outside integral molding of insulator body 1 is right The distance between two conductive parts increase, so as to increase its creep age distance.

Total, the utility model has rational in infrastructure and increase creep age distance on its original architecture basics the advantages of.

Claims

1. a kind of porcelain shell for voltage mutual inductor, including insulator body（1）With positioned at insulator body（1）The primary connection bolt of upper end （2）, it is characterised in that：The insulator body（1）Inside is hollow structure, and outside integral molding is provided with multiple annulus （11）, the insulator body（1）Primary connection bolt is provided with the center of upper surface（2）, the primary connection bolt （2）Upper end protrudes from the insulator body（1）Outside, lower end are located at the insulator body（1）It is internal to connect with a wound around coil Connect, the annulus（11）From top to bottom it is evenly distributed on the insulator body（1）Outer surface, the annulus（11）Inner and institute State insulator body（1）Integral type connects, and outer end is in arc structure, the annulus（11）Centre position is provided with downward circular arc Groove（12）.

A kind of 2. porcelain shell for voltage mutual inductor as claimed in claim 1, it is characterised in that：The primary connection bolt（2）With institute State insulator body（1）Junction the neck of oriented axis direction is set（21）, the primary connection bolt（2）With the insulator Body（1）Between pass through neck（21）And snap ring（13）Inserted type connects, the snap ring（13）With the insulator body（1）It is upper Surface, which is fixed, to be bonded.

A kind of 3. porcelain shell for voltage mutual inductor as claimed in claim 1, it is characterised in that：The annulus（11）It is thick from inside to outside Degree keeps constant.

A kind of 4. porcelain shell for voltage mutual inductor as claimed in claim 1, it is characterised in that：The groove（12）To lower recess most Big depth and the annulus（11）Thickness it is identical.