CN201238173Y

CN201238173Y - Totally-enclosed hardware fittings-free insulator propping type enclosure busbar

Info

Publication number: CN201238173Y
Application number: CNU2008201218935U
Authority: CN
Inventors: 康文龙; 胡国元; 李长青
Original assignee: Cixi xinxing electric power fittings factory
Current assignee: Cixi xinxing electric power fittings factory
Priority date: 2008-07-29
Filing date: 2008-07-29
Publication date: 2009-05-13
Anticipated expiration: 2018-07-29

Abstract

The utility model discloses a full-closed hardware-free insulator fastening type common enclosure busbar which comprises a shell, a conductor and an insulator; the conductor and the insulator are arranged in the shell; the shell is cylindrical; the conductor is symmetrical in the position of the shell; the insulator also comprises an annular supporting piece, three outer insulators and three inner insulators; the annular supporting piece is arranged in the circular center of the shell; one ends of the three inner insulators provided with arc slots are clamped and connected with the annular supporting piece; the three inner insulators are mutually arranged by 120 degrees; the other ends of the inner insulators are fastened in the inner side of the conductor; the outer side of the conductor is fastened on one ends of the outer insulators; the three outer insulators are mutually arranged by 120 degrees; three mounting holes are arranged on the shell; a base is arranged on the mounting holes; and the other ends of the outer insulators are mounted on the base. The full-closed hardware-free insulator fastening type common enclosure busbar can effectively reduce the heating loss, and is simple and convenient to be mounted and maintained.

Description

The totally-enclosed gold utensil formula insulator of exempting from holds out against the type common box bus

Technical field

The utility model belongs to three-phase non-segregated bus.

Background technology

The common box bus that uses in the power engineering now, no matter square still circular, conductor all is to fix with parts such as the gold utensil of the insulator of band metal-ware, iron and steel material quality, steel threaded fasteners basically, conductor adopts connecting plate to be connected with the steel threaded fastener between bus section, busbar section and the bus section, busbar section, generally between shell segments adopts flange, rubber seal and the connection of steel threaded fastener.Must cause the eddy current loss of steel connector and the heating loss of contact resistance like this, because the shell flange is made and the existence of alignment error, cause body seal also unreliable simultaneously.And some adopts the circular common box bus of insulator and gold utensil fixed conductor, except must causing eddy current loss and contact resistance heating loss, and after installing at the scene, gold utensil and insulator are if damage, cannot disassemble maintenance and change, unless allow the people dig into or near every group of insulator, manhole is set.

Summary of the invention

For the deficiency that the heating loss is big, installation and maintenance bother that overcomes existing three-phase non-segregated bus, the utility model provides a kind of can effectively reduce the heating loss, the easy totally-enclosed gold utensil formula insulator of exempting from of installation and maintenance holds out against the type common box bus.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of totally-enclosed gold utensil formula insulator of exempting from holds out against the type common box bus, comprise shell, conductor and insulator, described conductor and insulator are installed in the enclosure, described shell is cylindric, described conductor is the position symmetry in the enclosure, described insulator also comprises ring-shaped bearing piece, external insulator and inner insulator, described ring-shaped bearing piece is positioned at the circle centre position of described shell, three inner insulators have arc groove one end and are connected with the ring-shaped bearing piece chucking, described three inner insulators are mutually 120 °, the other end of described inner insulator holds out against the inboard at conductor, the outside of described conductor holds out against on an end of external insulator, and described three external insulators are mutually 120 °, have three installing holes on described shell, mounting seat on the described installing hole, the other end sealing of described external insulator is installed on the described base.

Further, described conductor in a tubular form, the junction of described inner insulator, external insulator and conductor is circular-arc.

Further, be provided with the insulator collet on described base, the other end of described external insulator is connected by securing member with the insulator collet, is provided with seal in the junction of external insulator and insulator collet.

Technical conceive of the present utility model is: this structure is because without bolt fastener and metal gold utensil fixed conductor, inside and outside insulator is two-sided to hold out against but utilize, all adopt welding manner between bus section, busbar section and bus section, busbar section, not only can save steel connectors such as used gold utensil of common common box bus and bolt, the more important thing is and eliminated eddy current loss and common common box bus intersegmental during with the Bolt Connection heating loss of contact resistance of these iron and steel metalworks when bus moves.Simultaneously because of the main compression chord of each insulating part, stress is good, rapid wear ring not, factory's assembling and on-the-spotly install, the maintenance dismounting is all very convenient.All insulating parts are made by resin materials such as DMC or SMC, have higher machinery and dielectric strength.By selecting the inside and outside insulator of the gold utensil type of exempting from of differing heights, can satisfy the demand of user to multiple voltage grade common box bus.

The beneficial effects of the utility model mainly show: 1, can effectively reduce the heating loss; 2, installation and maintenance are easy; 3, cost is low.

Description of drawings

Fig. 1 is the totally-enclosed sectional view that gold utensil formula insulator holds out against the type common box bus of exempting from;

Fig. 2 is the totally-enclosed schematic diagram that gold utensil formula insulator holds out against one section bus in the type common box bus of exempting from;

Fig. 3 is the partial enlarged drawing at insulator position among Fig. 2.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of totally-enclosed gold utensil formula insulator of exempting from holds out against the type common box bus, comprise shell 1, conductor 2 and insulator, described conductor 2 and insulator are installed in the shell 1, described shell 1 is cylindric, described conductor 2 position symmetry in shell 1, described insulator also comprises ring-shaped bearing piece 3, external insulator 4 and inner insulator 5, described ring-shaped bearing piece 3 is positioned at the circle centre position of described shell 1, three inner insulators 5 have arc groove one end and are connected with ring-shaped bearing piece 3 chuckings, described three inner insulators 5 are mutually 120 °, the other end of described inner insulator 5 holds out against the inboard at conductor 2, the outside of described conductor 2 holds out against on an end of external insulator 4, described three external insulators 4 are mutually 120 °, on described shell 1, have three installing holes 6, mounting seat 7 on the described installing hole 6, the other end sealing of described external insulator 4 is installed on the described base 7.

Described conductor 2 in a tubular form, described inner insulator 5, external insulator 4 is circular-arc with the junction of conductor 2.

Be provided with insulator collet 8 on described base 7, the other end of described external insulator 4 is connected by bolt fastener 9 with insulator collet 8, is provided with sealing gasket 10 in the junction of external insulator 4 and insulator collet 8.

In the present embodiment, insulator all adopts exempts from gold utensil type insulator, and every section bus mainly is welded with round tubular aluminum matter that lamination sheets is flexible coupling or copper by three two ends) conductor, cylindric aluminum shell, the gold utensil type of the exempting from insulator support assembly etc. that is no less than two groups partly form.Exempting from gold utensil type insulator support assembly for every group is made up of three parts such as external insulator 4, inner insulator 5, ring-shaped bearing piece 3, base 7, insulator collet 8, rubber gasket 10, rubber seal ring 11 and bolt fastener 9 that are mutually 120 °.If bus is vertical installation at the scene, then must prevent conductor 2 downslides at one of the insulator support assembly position of every conductor 2 welding and the small circle ring 12 of conductor 2 with material.

Earlier assemble on every section bus everywhere in three insulators two external insulator assemblies of correspondence mutually with external insulator 4, insulator collet 8, rubber gasket 10, bolt fastener 9, the circular arc that makes these two groups of external insulators up, two conductors 2 in three conductors 2 that are through in the shell are positioned on the circular arc of external insulator, quantity is with 3 inner insulators 5, ring-shaped bearing piece 3, assembling intermediate insulation support assembly on request, place it on oriented two conductors 2, making wherein, the circular arc of two inner insulators 5 just in time contacts with two location conductors 2.The 3rd conductor 2 is positioned in the 3rd the inner insulator circular arc of inner insulator assembly, and locate with special technological equipment temporarily, assemble the 3rd external insulator assembly then, in the end tight a bolt before the securing member 9, with specific purpose tool intermediate insulation supporting member assembly is moved on to and the corresponding position of external insulator assembly, the interim positioning process of dismantling is at last equipped and is tightened all bolt fasteners 9, finishes assembling in the factory.

After the adjustment of each section bus is in place, earlier each section conductor is welded with the stacked sheet that is flexible coupling, with axis tile each section shell is welded together again.

Claims

1, a kind of totally-enclosed gold utensil formula insulator of exempting from holds out against the type common box bus, comprise shell, conductor and insulator, described conductor and insulator are installed in the enclosure, it is characterized in that: described shell is cylindric, described conductor is the position symmetry in the enclosure, described insulator also comprises ring-shaped bearing piece, external insulator and inner insulator, described ring-shaped bearing piece is positioned at the circle centre position of described shell, three inner insulators have arc groove one end and are connected with the ring-shaped bearing piece chucking, described three inner insulators are mutually 120 °, the other end of described inner insulator holds out against the inboard at conductor, the outside of described conductor holds out against on an end of external insulator, and described three external insulators are mutually 120 °, have three installing holes on described shell, mounting seat on the described installing hole, the other end sealing of described external insulator is installed on the described base.

2, the totally-enclosed gold utensil formula insulator of exempting from as claimed in claim 1 holds out against the type common box bus, it is characterized in that: described conductor in a tubular form, the junction of described inner insulator, external insulator and conductor is circular-arc.

3, the totally-enclosed gold utensil formula insulator of exempting from as claimed in claim 2 holds out against the type common box bus, it is characterized in that: on described base, be provided with the insulator collet, the other end of described external insulator is connected by securing member with the insulator collet, is provided with seal in the junction of external insulator and insulator collet.