CN2260374Y

CN2260374Y - Electric power transformer

Info

Publication number: CN2260374Y
Application number: CN 96204444
Authority: CN
Inventors: 许兆文
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-13
Filing date: 1996-02-13
Publication date: 1997-08-20
Anticipated expiration: 2006-02-13

Abstract

The utility model discloses an electric power transformer which has the advantages of simple manufacturing technique, low cost, large capacity and strong overload protection capability and utilizes homemade materials to replace imported goods. The utility model is suitable for the electric power transportation and the electric power distribution of various transformer substations (stations), and is especially suitable for a large, a middle and a small electric power stations. The transformer innovatively adopts the controlled type cooling method of a double heat sinking system inner and outer, top and bottom, and cancels a machine attaching and radiating flat pipe system which is used by the cooling of the original transformer. Aluminium replaces copper as windings material. The optimum speed of the transformer is controlled by the method of adjusting and controlling the flow and the flow rate of cooling fluid according to the variation of electric power load and environment temperature. Compared with S7 and S8, the capacity of the transformer can be enhanced by 50% under same volume, the cost is reduced by 2/5, and the service life is extended by once.

Description

Power transformer

The present invention is to supplying, providing a kind of energy-efficient power transformer with department and place.The change, the distribution that are specially adapted to power plant, electric substation's (station) and big-and-middle-sized user use.

Power transformer is supply electricity consumption indispensable, also is current also without any unique equipment that can replace.Existing last word S8 series is a kind of high tesla cold-rolled silicon steel sheet that utilizes import and adopts forced-oil-air cooling and the cold mode of strong profit to reach to reduce the wastage, reduce the purpose of volume.These two kinds of types of cooling all are furnished with power in cooling system.This a part of power is 30%～40% of electric substation's (station) power consumption.Since the manufacturing process complexity of these two kinds of cooling systems, poor sealing performance, and leakage of oil, drainage often take place, and cause transformer integral device failure rate higher.The cooling system of big-and-middle-sized transformer needs at the use scene oiling to be installed.After the assembling, transformer takes up room greatly.Again because the heat radiation steel pipe processing difficulties in the cooling system, complex process, welding difficulty and labour intensity is big; Iron core adopts imported material, expends a large amount of foreign exchanges; Winding copper cash, a large amount of non-ferrous metal of consumption.So the transformer cost is raise.

Task of the present invention and purpose are: provide a kind of and can be applicable to multiple place, electric power system is used for power transformation, and what the user was used for distribution substitutes import with home made materials, saves foreign exchange; Utilizing inexpensive aluminum steel to substitute valuable copper cash reduces production costs.Adopt the type of cooling of the present invention, the problem of solved leakage of oil, leaking.Improve radiating effect; The raising capacity.Produce the power transformer that can directly substitute prior art that volume is little, safe and reliable, anti-overload ability is strong.

Power transformer of the present invention is characterized in compared with prior art: the reform of the type of cooling, cooling system are provided with heat absorber system inside and outside, that rationally distribute up and down.Endothermic system is all selected exhausted magnetic material for use except that the part of periphery, make the inner magnetic leakage free of transformer increase phenomenon, and the internal heat dissipating performance is improved greatly.Core material can be selected homemade alternative import for use; Winding can replace copper cash with aluminum steel.Because former heat radiating flat tube and dynamical system have been saved in the innovation of cooling system, it is little that transformer is taken up room, and saves autophage, simplified production technology, alleviated welding difficulty and labour intensity.The advantage of this transformer is specifically: volume is little, and is specious, and easily transportation is easy to install, easy-maintaining, good cooling results.Manufacturing cost is former in 3/5ths of capacity transformer, has overcome the problem that exists in the middle of the prior art products.

Describe in detail below in conjunction with accompanying drawing:

Fig. 1 is the part section front view of transformer.

Fig. 2 is the A face appearance view of transformer.

Fig. 3 is the B face appearance view of transformer.

Fig. 1 is a preferred embodiment.This oil tank of transformer shell is to be welded into rectangle by (10) and (40) each two, and around have outside radiator (7), (12) divide two-layer weld all around up and down on tank envelope (10) and (40).The inner chamber of outer radiator (7), (12) all is welded with fin (8), interior thermal conductance can better be gone out.(35) of outer radiator, (37) are four measure-alike end plates alive, encrypt sealing with screw (34) and decide.So that take the dirt of eliminating in the outer heat dump inner chamber apart, improve cooling effect.Respectively be equipped with above stripper plate (35), (37) wherein have two and cut down orchid (31), (36), be used for regulating and controlling cooling liquid flow and flow velocity, to reach optimum temperature according to the variation control transformer of load and ambient temperature.Have six circulation oil ducts (11) on two big faces of tank envelope (10), can freely circulate for transformer oil.A face of tank envelope (40) is welded with for what outer heat dump (35) and (37) were interconnected and is connected heat dump (41), makes it to become the complete outer heat absorber system that is interconnected.Fuel tank internal is provided with two following heat dumps (5) and two and goes up heat dumps (17), and horizontal arrangement is in the iron core both sides, the upper and lower side of winding, and the top of iron core is provided with a sheet grating formula heat dump (19).The two ends of interior heat dump (5), (7), (19) are used sealing square plate with matching (33), (38) and O-ring dish (32) respectively, be fastened on screw on two faces of tank envelope (40), and have the two ends of stripper plate to be connected with outer haustorium (7), (12), make it to become a cover complete in the endothermic system that is interlinked to the outside.Interior heat dump selects for use good heat conductivity, corrosion resistant aluminum alloy material to make.The all components of interior heat dump all can be changed at any time, can not open the fuel tank cap work of not removing contamination under the situation of suspended core.Whole device core is filled up it by two blocks of high-quality lumps of wood (2) through insulation processing, and by Luo silk (3) and (14) the device core is fixed in the fuel tank, and the device core is motionless in fuel tank in long-distance transport and the handling process, can not damage the device core, needn't pendant-core examination before using.First and second winding (9) is made and is used aluminum conductor.Capacity and handling characteristics according to transformer adopt multiple winding method manufacturing.The premium insulation lumps of wood (6) is clamped first and second winding by screw (13) and is fixing.The device core is provided with suspension ring (18) and uses for suspended core.The effect of other parts of transformer is all identical with prior art, needn't repeat here, and an existing example goes out label and each claims; Footing crossbeam (1); Iron core clamps channel-section steel (4); Iron core (15); Lead-out wire (20); The fastening screw of tank cover (21); Tank cover suspension ring (22); Fuel reserve tank (23); Explosion stack (24); First and second sleeve pipe (25); Gas protector (26); Dehydrating breather (27); Thermometer probe (28); Shunting switch (29); The whole drop hanger (30) of transformer; Drain the oil and cut down orchid (39).Iron core can adopt the resin-bonding technology.But the cost height brings difficulty to tearing iron core replacing winding open.

Claims

1. power transformer of the present invention mainly is made up of fuel tank, inside and outside heat absorber system, winding, iron core, first and second sleeve pipe, fuel reserve tank, circulation oil duct etc., it is characterized in that: tank envelope (10) and (40) weld all around have branch up and down twice and the outer heat absorber system that is interconnected, the two ends of outer heat dump (7) and (12) have stripper plate (35) and (37) respectively, fixing by screw (34), be provided with interior heat dump (5), (17) and (19) in the fuel tank.

2. transformer according to claim 1, it is characterized in that: totally four of the stripper plate of outer heat dump (35) and (37), be equipped with respectively above wherein having two to regulate to control and cut down orchid (31) and (36), the two ends of interior heat dump (5), (17) and (19) are fastening with the sealing square plate (33) that matches, (38) and O-ring dish (32) usefulness screw, and with outer heat dump (7), (12) and be communicated with.

3. transformer according to claim 1 is characterized in that: circulation oil duct (11), have six, be welded in respectively tank envelope (10) above.