CN201518265U

CN201518265U - Novel anti-aging oil leakage prevention transformer casing pipe

Info

Publication number: CN201518265U
Application number: CN2009202412602U
Authority: CN
Inventors: 许康文; 许�鹏
Original assignee: 熊会珍
Priority date: 2009-11-06
Filing date: 2009-11-06
Publication date: 2010-06-30
Anticipated expiration: 2019-11-06

Abstract

The utility model discloses a novel anti-aging oil leakage prevention transformer casing pipe, which comprises an upper porcelain casing (6) and a porcelain cover (4) which are arranged on a transformer box cover (7) in turn, a lower porcelain casing (9) arranged inside an oil tank below the transformer box cover, and a conductive rod (1) penetrating through the porcelain cover, the upper porcelain casing and the lower porcelain casing in turn. Two ends of the conductive rod are respectively in closely sealing connection with the porcelain cover (4) and the lower porcelain casing (9), a sealing layer is arranged between the lower porcelain casing and the transformer box cover, sealable cavities (12) are respectively arranged on the contact face of the porcelain cover and the upper porcelain casing and the contact face of the upper porcelain casing and the transformer box cover, and a planar seal pad (5) is arranged in the cavity. The novel anti-aging oil leakage prevention transformer casing pipe not only improves sealing performance, leads the seal pad to be in closed state, effectively protects the planar seal pad from being aged, guarantees the a transformer to work for long term without oil leakage, and assures normal use of the transformer, but also has more convenient installation, more reliable installation and fixation, and capability of lowering manufacture and installation costs.

Description

The novel anti grease proofing bushing shell for transformer that oozes that wears out

Technical field

The utility model relates to transformer accessory in the distrbution network, especially relates to bushing shell for transformer.

Background technology

According to the Eleventh Five-Year Plan requirement that national GDP energy consumption requirement declines to a great extent, the transformer that domestic power consumption is big is progressively eliminated, and new energy-economic transformer is produced in a large number.The output surge of transformer, specification requirement to transformer is more and more higher. and present China's transformer and porcelain shell for transformer pipe are in the middle of producing and moving, the common problem that has the transformer leakage of oil, its main cause: the one, the porcelain bushing project organization is unreasonable, can not adapt to new technical matters requirement; The 2nd, there is structural defect in the sealing of porcelain bushing and transformer case lid, porcelain bushing and conducting rod, not only the narrow but also sealing gasket of sealing surface is exposed, along with the increase of service time and the variation of environment for use, exposed sealing gasket by Exposure to Sunlight, ultraviolet irradiation, drench with rain, the erosion of moisture and chemical substance, the surface is ageing hardening progressively, follow the string, even take place to rot, the loss of seal ability produces the seepage of transformer oil then, influence the normal operation of transformer, produce the damage accident when serious.

The utility model content

At the problem that above-mentioned bushing shell for transformer exists, the utility model has designed a kind of good seal performance, and the sealing face width, and sealing gasket is not exposed, installs and fixes conveniently, and is aesthetic in appearance generous, the aging grease proofing bushing shell for transformer that oozes of the novel anti that manufacturing cost is low again.

The technical scheme that the technical problems to be solved in the utility model is taked is: the aging grease proofing bushing shell for transformer that oozes of described novel anti comprises that being successively set on last insulator and the porcelain that transformer tank covers covers, be positioned at the following insulator of transformer case lid below fuel tank and pass the porcelain lid successively, the conducting rod of last insulator and following insulator, described conducting rod two ends link to each other with following insulator fit sealing with the porcelain lid respectively, be provided with sealant between described insulator down and the transformer case lid, in porcelain lid and last insulator contact-making surface and on be respectively arranged with closed cavity in insulator and the transformer case lid contact-making surface, in cavity, be provided with planar sealing pad.

Cavity in described porcelain lid and the last insulator contact-making surface can be formed by the cavity combinations that is separately positioned on porcelain lid lower surface and last insulator upper surface, also can be formed by the cavity that is arranged on porcelain lid lower surface or last insulator upper surface separately, the described cavity of going up in insulator and the transformer case lid contact-making surface is preferably formed by the cavity that is provided with in the insulator lower surface.

It is more convenient for sleeve pipe is installed, install and fix more reliably, down be provided with groove in the insulator lower surface, the conducting rod of described groove location correspondence is provided with the convex clip that can embed in the groove, described groove and convex clip cross section are quincunx, also can be in-line, cross or box-shaped certainly.During installation the activity of the convex clip on the conducting rod is embedded in the groove, to play the insulator circumference to erect simultaneously and cut two parallel tangent planes, parallel cut surface is put into the transformer case lid card article that presets, it is installed firmly not can left rotation and right rotation, then conducting rod passed down insulator, transformer case lid from bottom to up, go up insulator and porcelain lid, from last fastening nut, connection is installed in bobbin seal then, and can reduce and make and installation cost.

The utility model is arranged between porcelain lid and the last insulator owing to having now; the O grommet type seal that is used for the conducting rod sealing is designed to planar sealing pad; and planar sealing pad placed respectively in porcelain lid and the last insulator contact-making surface and in last insulator and the closed cavity of transformer case lid contact-making surface; planar sealing pad is not exposed; change that to expose oil sealing be built-in oil sealing; thereby cover at transformer tank and cannot see sealing gasket; both elegant in appearance; make planar sealing pad be positioned at the inside of sleeve pipe again; can not be subjected to the corrosion of harmful substances such as ultraviolet ray and chemistry; it is aging to protect planar sealing pad to be difficult for effectively, ensures that transformer works long hours and oil-proof, guarantees the normal use of transformer.

The aging grease proofing bushing shell for transformer that oozes of novel anti described in the utility model is widely used in using in the transformer that voltage and current is respectively 10-40.5KV/50-5000A.

Description of drawings

Fig. 1 is a structural representation intention of the present utility model.

In the drawings 1, conducting rod 2, nut, 3, packing ring 4, porcelain lid 5, planar sealing pad 6, go up insulator 7, transformer case lid 8, rubber blanket 9, insulator 10, convex clip 11, groove 12, cavity down

Embodiment

In Fig. 1, describedly anti-agingly grease proofingly ooze that bushing shell for transformer comprises porcelain lid 4, goes up insulator 6, insulator 9 and pass the porcelain lid successively, go up the conducting rod 1 of insulator and following insulator down, described porcelain lid, last insulator and following insulator are all made with ceramic material, described conducting rod 1 TBE (threaded both ends), described insulator 9 down is arranged in the fuel tank (figure does not draw) of transformer case lid 7 belows, be provided with sealant between insulator and the transformer case lid contact-making surface down, described sealant is a rubber blanket 8, also can be the sealant of other material.Porcelain covers 4 not glazings of lower surface, in porcelain lid 4 and last insulator 6 contact-making surfaces, be provided with a closed cavity 12, cavity lays respectively in the porcelain lid lower surface and in the last insulator upper surface, in cavity, be provided with planar sealing pad 5, in last insulator 6 and transformer case lid 7 contact-making surfaces, also be provided with a closed cavity 12 equally, in this cavity, also be provided with planar sealing pad 5, the thickness of described planar sealing pad is greater than cavity height, by the nut 2 of tightening the conducting rod two ends and the packing ring 3 that passes through the conducting rod two ends, both can make the conducting rod two ends cover end face with porcelain respectively and all realize sealing with following insulator lower surface, make porcelain lid lower surface with last insulator upper surface and go up the insulator lower surface and in mutually close, seal again by the planar sealing pad realization with the transformer case lid, it is near being preferably in below the 1mm at interval, thereby cover at transformer tank and can't see the planar sealing pad that exposes after compressing, it is firm so both to have sealed, planar sealing pad in two cavitys is not exposed, be not afraid of wind and weather, the sun shines, effectively prevent ultraviolet ray, chemical substance is to the infringement of planar sealing pad, prevent that planar sealing pad is aging, prevent the outside seepage of transformer oil, in addition, because following insulator 9 lower surfaces are provided with cross section and are quincuncial groove 11, be quincuncial convex clip 10 with also being provided with on the corresponding conducting rod of groove, in the movable embedding groove of convex clip, because insulator directly is provided with conducting rod plum blossom groove and directly erects on the circle tangent plane and cut two planes down, reduced the length of conducting rod, with effective external diameter of following insulator, make and install thereby reach low-cost.

Claims

1. the aging grease proofing bushing shell for transformer that oozes of novel anti, it comprises last insulator (6) and the porcelain lid (4) that is successively set on the transformer case lid (7), be positioned at the following insulator (9) of transformer case lid below fuel tank and pass the porcelain lid successively, the conducting rod (1) of last insulator and following insulator, described conducting rod two ends link to each other with following insulator (9) fit sealing with porcelain lid (4) respectively, be provided with sealant between described insulator down and the transformer case lid, it is characterized in that: in porcelain lid and last insulator contact-making surface and on be respectively arranged with closed cavity (12) in insulator and the transformer case lid contact-making surface, in cavity, be provided with planar sealing pad (5).

2. the novel anti according to claim 1 grease proofing bushing shell for transformer that oozes that wears out is characterized in that: insulator (9) lower surface is provided with groove (11) down, and the conducting rod of described groove location correspondence (1) is provided with the convex clip (10) that can embed in the groove.

3. the novel anti according to claim 2 grease proofing bushing shell for transformer that oozes that wears out is characterized in that: described groove (11) and convex clip (10) cross section are quincunx, box-shaped, in-line or cross.