CN103489573A

CN103489573A - Guide-tube-cooled oil-immersed transformer

Info

Publication number: CN103489573A
Application number: CN201310431412.6A
Authority: CN
Inventors: 苗国君; 刘志杰
Original assignee: SHANDONG HUIHUANG ELECTRONIC TRANSFORMER CO Ltd
Current assignee: SHANDONG HUIHUANG ELECTRONIC TRANSFORMER CO Ltd
Priority date: 2013-09-22
Filing date: 2013-09-22
Publication date: 2014-01-01

Abstract

The invention relates to a transformer, in particular to a guide-tube-cooled oil-immersed transformer comprising a plurality of boxes. A winding and a core are fitted inside each box. A high-voltage terminal and a low-voltage terminal are fitted at the top of each box. The transformer is characterized in that each box is provided with a cooling device comprising a guide tube, one end of each guide tube is inserted into the corresponding core, the other end of each guide tube extends into each box, a plurality of cooling fins are disposed at the tail end of each guide tube, and the guide tubes and the cooling fins are filled with cooling liquid. The common cooling devices are replaced by the cooling devices; accordingly, raw materials are saved greatly, the size of the transformer is reduced, the cost of electric and civil engineering used with the transformer is reduced, and production and operation costs of the transformer are reduced greatly.

Description

Conduit heat radiation oil-filled transformer

(1) technical field

The present invention relates to a kind of transformer, particularly a kind of conduit heat radiation oil-filled transformer.

(2) background technology

At present, oil-filled transformer is widely used, and transformer can produce heat when work, transformer temperature is raise, and under the same load condition, transformer temperature is higher, it self energy consumption is just larger, in the life-span that simultaneously can reduce transformer, therefore must carry out cooling to transformer.

The type of cooling of oil-filled transformer mainly contains oil, oil forced oil and follows cooling etc.Wherein the type of cooling of forced oil-circulation is only applicable to 220KV and above oversize transformer, and range of application is not extensive, and cooling cost is high, installs complicated easy break-down; The type of cooling of oil, cooling device is relatively simple, but the confidential consumption electric energy of cooling air, and blower fan can not long time continuous working, and blower fan repair and replacement trouble, affect transformer work; The type of cooling of oil is the simplest, apply also the most extensive, but this type of cooling radiating effect is poor, can only improve heat-sinking capability by increasing radiator quantity, the weight of radiator accounts for the 25-35% of box weight, in radiator, the weight of oil accounts for the 10-15% of total weight of oil, the waste resource, and cost is high.

(3) summary of the invention

The present invention is in order to make up the deficiencies in the prior art, provide a kind of simple in structure, production cost is low, the conduit of high efficiency heat radiation oil-filled transformer.

The present invention is achieved through the following technical solutions:

A kind of conduit heat radiation oil-filled transformer, comprise that inside is assembled with the casing of winding and iron core, the casing top is equipped with high-voltage connection terminal and low-voltage wiring terminal, it is characterized in that: on described casing, heat abstractor is installed, heat abstractor comprises that an end inserts the conduit of core interior, the conduit other end stretches out casing and several fin is set endways, in conduit and fin, is loaded with cooling fluid.

Heat abstractor of the present invention comprises conduit, cooling fluid and several fin, and cooling fluid is full of conduit, fin inside, has the characteristic that heat conduction is fast, thermal conductive capacity is large, but moment approaches heat abstractor two ends temperature; Heat abstractor one end inserts core interior, and the other end is through casing and stretch out the casing certain-length, is exposed in air, and the part of stretching out casing increases several fin to increase radiating surface, from the transformer center, heat is conducted fast and efficiently.

More excellent scheme of the present invention is:

Be loaded with transformer oil in described casing, transformer oil, as dielectric and heat-conducting medium, is delivered to the tank surface heat radiation by heat, plays certain booster action.

Heat-transfer rate of the present invention is fast, thermal conductive capacity is large, but moment approaches heat abstractor two ends temperature, transformer oil is delivered to the tank surface auxiliary heat dissipation by heat simultaneously, simple in structure, cost is low, do not take electricity, non-maintaining, adopt the plug-in type cooling structure, can directly from the transformer center, heat be conducted fast and efficiently, can make fast transformer internal temperature and ambient temperature approach, improve greatly the transformer Cooling ability, reduce transformer self energy consumption, energy-conserving and environment-protective, extend transformer useful life.

Heat abstractor of the present invention substitutes common radiator, saves a large amount of raw material, reduces volume of transformer, reduces electric, the civil engineering supporting with transformer and drops into, and the manufacture of transformer and operating cost all significantly reduce.

(4) accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is further illustrated.

Fig. 1 is main TV structure schematic diagram of the present invention;

Fig. 2 is plan structure schematic diagram of the present invention;

Fig. 3 is left TV structure schematic diagram of the present invention;

Fig. 4 is the schematic cross-section of A-A face shown in Fig. 3.

In figure, 1 heat abstractor, 2 high-voltage connection terminals, 3 low-voltage wiring terminals, 4 casings, 5 windings, 6 iron cores, 7 transformer oil, 8 conduits, 9 cooling fluids, 10 fin.

(5) embodiment

Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises that inside is assembled with the casing 4 of winding 5 and iron core 6, casing 4 tops are equipped with high-voltage connection terminal 2 and low-voltage wiring terminal 3, on described casing 4, heat abstractor 1 is installed, heat abstractor 1 comprises that an end inserts the conduit 8 of iron core 6 inside, conduit 8 other ends stretch out casing 4 and several fin 10 are set endways, in conduit 8 and fin 10, are loaded with cooling fluid 9; Be loaded with transformer oil 7 in described casing 4.

Transformer oil 7 is as dielectric and heat-conducting medium, heat is delivered to casing 4 surface radiatings, heat abstractor 1 comprises conduit 8, cooling fluid 9 and several fin 10, cooling fluid 9 is full of conduit 8 and fin 10 inside, there is heat conduction fast, the characteristic that thermal conductive capacity is large, but moment approaches heat abstractor 1 two ends temperature, heat abstractor 1 one ends insert iron core 5 inside, the other end is through casing 4 and stretch out casing 4 certain-lengths, be exposed in air, the part of stretching out casing 4 increases several fin 10 to increase radiating surface, from the transformer center, that heat is quick, conduct efficiently.

Claims

1. conduit heat radiation oil-filled transformer, comprise that inside is assembled with the casing (4) of winding (5) and iron core (6), casing (4) top is equipped with high-voltage connection terminal (2) and low-voltage wiring terminal (3), it is characterized in that: heat abstractor (1) is installed on described casing (4), heat abstractor (1) comprises that an end inserts the inner conduit (8) of iron core (6), conduit (8) other end stretches out casing (4) and several fin (10) is set endways, in conduit (8) and fin (10), is loaded with cooling fluid (9).

2. conduit heat radiation oil-filled transformer according to claim 1, is characterized in that: be loaded with transformer oil (7) in described casing (4).