CN2363357Y - Integral sheet assembled transformer cooler with inner gullet round base pipe - Google Patents

Abstract

The utility model relates to an integral threading piece type transformer cooler with inner gear slot elliptical base pipes, which comprises a main body of a cooler housing. One side of the main body of the housing is provided with a fan in which a finned pipe cluster is installed; the finned pipe cluster is formed by the method that base pipes with elliptical sections are installed on fins in a penetrating mode; an oil chamber positioned on the upper part and an oil pump positioned at the lower part are communicated with the finned pipe cluster; a controller is arranged under the main body; through holes are arranged on each fin; inner parts of the through holes are all penetrated with the elliptical base pipes. The utility model is an integral threading piece type finned pipe cluster, so that the size and the weight of the cooler can be decreased, the structure of the cooler becomes compact and reasonable, and simultaneously, the continuity of fins is utilized to enhance the heat transfer efficiency.

Description

The whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline

The utility model relates to a kind of heat-exchange apparatus, particularly a kind of whole sheet assemble cooling device for transformer with the oval parent tube of internal spline.

At present in the oil-filled transformer the forced oil-circulated air-cooled that adopts but the device structure is as depicted in figs. 1 and 2, it is by cooler casing body 2, is installed in several fans 4 of body 2 one sides, vertically is installed in the fins cooling tube bundle 5 that fin is housed in the cooler body 2, grease chamber 1 that is connected with cooling tube bundle 5 and oil pump 7 constitute, the transformer cold oil is squeezed into the cooling tube bundle through oil pump, and after air-cooled cooling, pass back in the transformer, can under the temperature that allows, work to guarantee transformer.This shows, cooler is an important component part of big-and-middle-sized oil-filled transformer, because the structure of finned tube is reasonable more, heat exchange area is big more, windage is more little, its cooling effect is just good more, and energy consumption is also just low more, under identical other external condition, the heat-exchange capacity of finned tube is strong more, and the volume of its cooler, weight are also just more little.

For strengthening the heat-exchange capacity of going up finned tube, increase fin cooling tube bundle 5 heat exchange areas, the applicant is 97203115.4 utility model patent in patent No. of first to file, the main feature of this patent is that the sectional area with finned tube is designed to ellipse, offer in oval finned tube endoporus along the body longitudinal extension and to the recessed some circumferential teeth groove of external diameter direction, teeth groove is triangle or semicircle.By being serially connected with the several layers fin on each oval-shaped parent tube, again each fin tube bundle unit is welded the fin tube bundle 5 that connects into to constitute a fin tube bundle unit.Above-mentioned improvement is to rely on the shape of the parent tube in the finned tube unit is improved, and makes fin tube bundle 5 both have big heat exchange area, has less windage and good flow perturbation effect again.

But be formed by connecting because above-mentioned fin tube bundle 5 is fin tube bundle unit by several Dan Li, each carries out between the fin of heat sinking function discontinuous, and the function of its heat radiation also so slightly has and weakens; In addition all should retention gap between each fin bunch unit, not only increased the volume of cooler, and lacked a kind of globality of structure, and this kind syndeton also is easy to generate a kind of noise when work; The fin tube bundle manufacturing process of said structure is also complicated in addition.

The purpose of this utility model is to provide a kind of whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline, keep and have the oval parent tube of internal spline in the former patent application, again one group of parent tube is worn by holistic fin, to keep the structural intergrity of cooler, both simplify structure and dwindled body, improve its manufacturing process, and further improve the efficient of its heat radiation.

The purpose of utility model is achieved in that a kind of whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline, include a cooler casing body, a fan is equipped with at ventilating duct place in outer cover body one side, in outer cover body, be equiped with the fin tube bundle, the fin tube bundle is to constitute by being equipped with parent tube on the fin, this parent tube is an elliptic cross-section, in the endoporus of oval finned tube, offer along the vertical perforation of body and to the recessed some teeth groove of external diameter direction, teeth groove is circumferentially spaced apart along endoporus, what be connected with the fin tube bundle is superposed grease chamber and the oil pump that is positioned at the bottom, bottom at body is provided with controller, it is characterized in that: be arranged with perforation on above-mentioned each fin, each perforation interior all is equipped with above-mentioned oval parent tube.

The purpose of this utility model also can be realized by following measure, described fin can be set to several layers on demand, and each interlayer perforation is corresponding, and is provided with the certain intervals distance, each layer in this fin tube bundle includes a fin, arranges on this fin and is equipped with parent tube.Or in this fin tube bundle each the layer include plural fin, be arranged with parent tube on each fin, to constitute plural fin tube bundle unit, each fin tube bundle unit is connected in the outer cover body.

Therefore remarkable result of the present utility model is as follows:

The 1st: kept have teeth groove in the former patent oval finned tube as parent tube, make it still can improve heat exchange area 20%, therefore, can keep higher heat transfer efficiency.

The the 2nd: be equipped with several parent tubes on each fin, constitute a whole sheet assemble fin tube bundle, make that the structure of fin tube bundle is more simple and direct, small and exquisite, therefore, can reduce the volume and weight of cooler, make more compact and reasonable of cooler construction, utilize the continuity of fin to improve heat transfer efficiency simultaneously.

The explanation of accompanying drawing drawing:

Fig. 1 is the structure chart of existing transformer cooler;

Fig. 2 is office's profile of the inner fins tube bundle of Fig. 1;

Fig. 3 is a structural representation of the present utility model.

Fig. 4 is the structural representation of second kind of embodiment of the present utility model;

Fig. 5 is the structural representation of fin tube bundle of the present utility model unit.

It is as follows to describe the utility model in detail below in conjunction with embodiment and accompanying drawing thereof:

The utility model has a cooler casing body 2, in each fan guard 3 at outer cover body 2 one side wind-guidings letter 8 places, a fan 4 is housed respectively, in outer cover body 2, be equiped with the fin tube bundle 5 of vertical distribution, what be connected with fin tube bundle 5 is superposed grease chamber 1 and the oil pump 7 that is positioned at the bottom, is provided with controller 6 in the bottom of body 2 in addition.

This fin tube bundle 5 is to be equipped with fin 52 by parent tube 51 to constitute; Wherein parent tube 51 is an elliptic cross-section, offers in the endoporus of oval parent tube 51 along the vertical perforation of body and to the recessed some teeth groove 511 of external diameter direction, and teeth groove 511 is circumferentially spaced apart along endoporus.Along the circumferential outer recessed teeth groove 511 spaced apart of endoporus is triangle or semicircle.

As shown in Figure 5, be arranged with one group of perforation on the fin 52 in the utility model, each perforation interior all wears oval parent tube 51.Fin 52 can be set to several layers on demand, and each interlayer perforation is corresponding, and is provided with the certain intervals distance, when assembling, each parent tube 51 is worn positioning instant along this perforation can finish fin tube bundle Unit 5.Parent tube 51 is the state of closely cooperating with this perforation, makes that its heat conductivility is better.

Referring to first kind of embodiment of the present utility model illustrated in fig. 3, in the present embodiment, in the body 2 in the cooler fin tube bundle Unit 5 can be arranged, both each layer included a fin 52, interlocking on this fin 52 is arranged with perforation, is equipped with parent tube 51 in this perforation.

Fig. 4 illustrates second kind of embodiment of the present utility model, in the present embodiment, can be provided with two fin tube bundle Unit 5 in the above-mentioned enclosure body 2, and both each layer can be made of plural fin 51, arranged on each fin 51 and was equipped with oval parent tube 5.Each fin tube bundle 5 is connected in the outer cover body 2.

To sum up, the utility model is the fin structure that adopts a kind of whole sheet assemble, penetrates the state that each parent tube on it and this fin keep a kind of tight structure, therefore it has the continuity of heat radiation more also, and, reduce the connection between each fin, can reduce noise.During assembling, parent tube penetrated get final product, technology is simple, can reduce manufacturing cost.

Claims (5)

1, a kind of whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline, include a cooler casing body, a fan is equipped with at ventilating duct place in outer cover body one side, in outer cover body, be equiped with the fin tube bundle, the fin tube bundle is to constitute by being equipped with parent tube on the fin, this parent tube is an elliptic cross-section, in the endoporus of oval finned tube, offer along the vertical perforation of body and to the recessed some teeth groove of external diameter direction, teeth groove is circumferentially spaced apart along endoporus, what be connected with the cooling tube bundle is superposed grease chamber and the oil pump that is positioned at the bottom, bottom at body is provided with controller, it is characterized in that: be arranged with perforation on above-mentioned each fin, each perforation interior all is equipped with above-mentioned oval parent tube.

2, a kind of whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline according to claim 1 is characterized in that described fin can be set to several layers on demand, and each interlayer perforation is corresponding, is provided with the certain intervals distance between each layer fin.

3, a kind of whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline according to claim 1 and 2, it is characterized in that each layer in the described fin tube bundle includes a fin, be arranged with parent tube on this fin, constitute a fin tube bundle unit.

4, a kind of whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline according to claim 3 is characterized in that can being provided with in the described outer cover body plural fin tube bundle unit.

5, a kind of whole sheet assemble cooling device for transformer that has the oval parent tube of internal spline according to claim 4 is characterized in that described each fin tube bundle unit is connected in the outer cover body.

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