CN207938433U - A kind of novel 35kV grades of full-sealed transformer fuel tanks - Google Patents

Abstract

The utility model discloses a kind of novel 35kV grades of full-sealed transformer fuel tanks, it includes bushing, transformer box cover, casing mounting flange, increase seat, oil tank of transformer, lower end tail portion porcelain vase customized lengthening on the basis of original of bushing, after the casing mounting flange of case lid surface is raised with special raising seat, casing is installed again, the utility model can effectively solve the problem that 35kV grades of full-sealed transformers because of no oil conservater, the problem of oil level declines and then built-in electrical insulation grade is made to decline inside device body caused by the reasons such as bellows wall limit of expansion is small, safety to bushing, the safety of insulating properties and the transformer entirety of inside transformer is all greatly improved, it is good with safety, the advantage that feasibility is high and later maintenance amount is few.

Description

A kind of novel 35kV grades of full-sealed transformer fuel tanks

Technical field

The utility model is related to oil tank for transformers in power equipment, and in particular to a kind of novel 35kV grades of hermetically sealed transformation Device fuel tank.

Background technology

General 35kV grade transformers are the structure with oil conservater on the market at present, with the hermetically sealed transformation of voltage level Device mostly uses greatly capsule type oil storage cabinet isolation extraneous air, but for the specialities without oil conservater（Such as match mould assembling and becomes installation Naked change）When also requiring hermetically sealed, many manufacturers have to the encapsulation scheme for continuing to use 10kV grades of transformers, but disadvantage is 35kV The transformer often volume bigger of grade, fuel tank innage is also more, the temperature change or appearance that transformer station high-voltage side bus when brings When burst sex chromosome mosaicism, the lifting of the transformer oil in fuel tank can only rely on the tubular type oil on gilled radiator and case lid on fuel tank Position meter realization, however in the two, pipe type oil-level gauge is very limited because of its own capacity, it is virtually impossible to accomplish oil level in adjusting tank Effect, the problems such as it is inaccurate at this moment often to will appear scale, nozzle oil spout.Because the oil level in casing insulator also can be with tubular type Oil level indicator declines and declines, it is possible to cause the place that high-voltage connection is connect with casing phase line to be not immersed in oil and point occurs End electric discharge, in addition it is serious when can cause to destroy transformer, bring loss or disaster.

Invention content

To solve the above problems, the utility model provides a kind of novel 35kV grades of full-sealed transformer fuel tanks, structure is set Meter is more reasonable, safe, and for achieving the above object, technical solution adopted in the utility model is：

A kind of novel 35kV grades of full-sealed transformer fuel tanks, it includes fuel tank, is provided with case lid above fuel tank, above case lid It is provided with vertical bushing, the lower tail porcelain vase of the bushing customized lengthening, bushing on the basis of original Fuel tank internal is stretched into lower end, and apart from case lid 90cm-120cm, such effect is the tail when inside transformer oil level declines for lower end Portion's porcelain vase will not increase because of bushing to be increased seat and completely disengages on minimum oil level, to prevent high-voltage connection can Can climb electric danger from casing tail portion porcelain vase；Seat is increased in bushing and the setting of case lid junction, increases casing Oil storage space, when inside transformer oil level generates variation, the oil level increased in seat can be timely adjusted, and be prevented Transformer oil inside bushing porcelain vase all empties and the danger of hazardous electrical discharges of generation.Bushing increases seat by mounting flange After raising, then casing is placed on the casing mounting flange for increasing seat and is installed, under the height and bushing that increase seat The distance that fuel tank is stretched into tail portion is identical, is 90cm-120cm, and bushing is connect by casing mounting flange with seat is increased.

The utility model has feasibility height, safety good, can effectively solve the problem that 35KV grades of full-sealed transformers because of no storage Transformer oil level poor controllability caused by Oil Tank, pipe type oil-level gauge can not make fine tuning because oil content is few, can effectively prevent Lead caused by oil level is too low in fuel tank is exposed to the security risk etc. outside transformer oil and caused, with simple in structure, practical The features such as property is strong, cost-effective, safe.

Description of the drawings

Fig. 1 is the schematic diagram of the utility model.

Reference numeral.1- bushings, 2- case lids, 3- increase seat, 4- fuel tanks, 5- casing mounting flanges, 6- lengthening sections.

Specific implementation mode

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

A kind of novel 35kV grades of full-sealed transformer fuel tank as shown in drawings, it includes fuel tank 4,4 top setting of fuel tank There are case lid 2,2 top of case lid to be provided with vertical bushing 1, the lower tail porcelain vase of the bushing 1 is on original basis Upper customized lengthening, lengthening section 6 increase seat 3, high pressure apart from case lid 90cm-120cm, in bushing 1 and the setting of 2 junction of case lid Casing 1 is connect by casing mounting flange 5 with seat 3 is increased.

Specifically implementation process is：The part for installing raising seat 3 additional is needed to be opened according to the two fit dimension on case lid 2 Hole will increase seat 3 and be welded as a whole with case lid 2 after trepanning, the bottom porcelain vase lengthening processing to 35KV grades of bushings 1, casing It is approximate that the height of seat 3 is increased above 6 length of lengthening section of bottom porcelain vase and case lid, bushing 1 is directly installed on by when installation On the casing mounting flange 5 for increasing 3 top of seat, finally general assembly is completed with fuel tank 4.

The utility model has feasibility height, safety good, can effectively solve the problem that 35KV grades of full-sealed transformers because of no storage Transformer oil level poor controllability caused by Oil Tank, pipe type oil-level gauge can not make fine tuning because oil content is few, can effectively prevent Lead caused by oil level is too low in fuel tank is exposed to outside transformer oil and the security risk etc. of initiation.

The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill of technical field For personnel, without departing from the principle of this utility model, several improvement can also be made, wound is not being paid in these improvement The scope of protection of the utility model is also should be regarded as under the premise of the property made labour.

Claims (1)

1. a kind of novel 35kV grades of full-sealed transformer fuel tanks, it includes fuel tank, is provided with case lid above fuel tank, is set above case lid It is equipped with vertical bushing, characterized in that customized lengthening on the basis of original of the lower tail porcelain vase of the bushing, it is high Pressure lower end stretches into fuel tank internal, and lower end is apart from case lid 90cm-120cm；It is increased in bushing and the setting of case lid junction Seat, bushing are connect by casing mounting flange with seat is increased, and the height for increasing seat is 90cm-120cm.