Novel air cooling mechanism of dry-type transformer

Abstract

A novel air cooling mechanism of a dry-type transformer comprises a dry-type transformer body, secondary air pipes are arranged in the dry-type transformer body, and the secondary air pipes are arranged corresponding to the bottoms of multiple windings respectively. The secondary air pipe is connected with the main air pipe; a fan quick-mounting mechanism is fixedly arranged outside a shell of the transformer main body, and a first fan is arranged on the fan quick-mounting mechanism; and a second fan is arranged on the dry-type transformer main body and is communicated with the winding bin chamber. According to the utility model, the problem of low heat exchange efficiency of the dry-type transformer in the prior art is solved, and the quick maintenance of the fan is particularly realized, namely, the fresh air fan can be quickly disassembled and assembled after the fan breaks down. On the basis, the arrangement form of a cooling mechanism of the winding is more reasonable, cold air directly blows the winding, heat dissipation is more facilitated, the equipment is safe to use, and heat accumulation in the winding bin can be effectively avoided while the heat exchange efficiency is improved through the arrangement of the second draught fan.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of transformer, especially a novel air cooling mechanism of dry-type transformer. BACKGROUND

[0002] The existing box type dry-type transformer forced air cooling device, the principle is that the fan is installed in the lower part of the dry-type transformer box, and the fan is rotated to force the circulation of air to dissipate heat. However, through long-term monitoring, the air circulation efficiency of this heat dissipation mode is low, especially the personnel need to clean the dry-type fan exhaust port regularly, which is not conducive to heat dissipation. At the same time, since the fan is inside the transformer box, and the transformer type equipment has no relevant maintenance, the fan continues to run, once the fan fails or the line fails, it is difficult to enter the maintenance and replace the fan, which brings great work difficulty and safety hazard to the maintenance personnel. SUMMARY

[0003] The utility model aims at overcoming the prior art deficiencies, providing a novel air cooling mechanism of dry-type transformer which has simple structure, high heat exchange efficiency, low maintenance frequency and is convenient to maintain and replace.

[0004] The device comprises a dry-type transformer body, the dry-type transformer body comprises a winding compartment and an air flow compartment, the winding compartment is arranged at the upper part of the air flow compartment;

[0005] A winding assembly support is arranged in the winding compartment, and a winding is arranged in the winding assembly support;

[0006] A secondary air pipe is arranged in the air flow compartment, and the secondary air pipe is arranged corresponding to the bottom of the winding;

[0007] The secondary air pipe is connected with the main air pipe;

[0008] A fan quick mounting mechanism is fixedly arranged outside the shell of the transformer body; the fan quick mounting mechanism comprises an assembly base disc, and the main air pipe is arranged out of the assembly base disc;

[0009] Assembly holes are arranged in the assembly base disc in an array;

[0010] A first fan is arranged outside the assembly base disc, and the fan is fastened to the assembly base disc through the assembly hole and communicates with the main air pipe cavity;

[0011] A second fan is arranged above the dry-type transformer body, and the second fan communicates with the winding compartment cavity.

[0012] The effect achieved by this is that the first fan blows air to the winding through the main air pipe and the secondary air pipe, that is, the air flow is blown directly to the winding; the second fan rapidly exhausts the hot air in the winding compartment, and thus the effect of rapid heat exchange is achieved.

[0013] The utility model discloses a beneficial effect is: the utility model solves the low problem of heat exchange efficiency of dry -type transformer in the prior art, especially realized the quick maintenance of fan, that is, can quickly remove and assemble new fan after the failure of fan. On this basis, the cooling mechanism setting form of the winding of the equipment is more reasonable, and the direct blowing of cold air to the winding is more beneficial to heat dissipation and equipment use safety, and the setting of the second fan can effectively avoid the heat accumulation in the winding bin while accelerating the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a sectional view angle's structural diagram of the novel air cooling mechanism of dry -type transformer of the utility model;

[0015] Figure 2 It is Figure 1 the local enlarged view;

[0016] Reference signs:

[0017] 1-temperature monitoring equipment 2-two stage wind pipe 3-main wind pipe 4-first fan 5-assembly base disc 6-winding 7-second fan

[0018] The realization of the utility model, functional characteristics and advantages will be further explained in combination with embodiments, with reference to the drawings. DETAILED DESCRIPTION

[0019] Referring to Figure 1 , Figure 2 The utility model discloses a novel air cooling mechanism of dry -type transformer, including dry -type transformer main part, dry -type transformer main part including winding bin and wind flow bin, the winding bin sets up at the upper portion of wind flow bin;

[0020] The winding assembly support is arranged in the winding bin, and the winding 6 is arranged in the winding assembly support;

[0021] The two stage wind pipe 2 is arranged in the wind flow bin, and the two stage wind pipe 2 is arranged at the bottom of the winding 6;

[0022] The two stage wind pipe 2 is connected with the main wind pipe 3;

[0023] The fan quick -mounting mechanism is fixedly arranged on the shell of the transformer main part;The fan quick -mounting mechanism includes assembly base disc 5, and the main wind pipe 3 is arranged out of assembly base disc 5;

[0024] Assembly holes are arranged on the assembly base disc 5 in array;

[0025] The first fan 4 is arranged outside the assembly base disc, and the fan is fastened on the assembly base disc 5 through the assembly hole and is communicated with the chamber of the main wind pipe 3;

[0026] A second fan 7 is arranged on the dry-type transformer body and communicates with the winding chamber.

[0027] The effect achieved is that the first fan 4 blows air to the winding 6 through the secondary air pipe 2 and the main air pipe 3, that is, cold air is blown directly to the winding 6; the second fan 7 quickly exhausts the hot air in the winding chamber, and the effect of rapid heat exchange is achieved.

[0028] In embodiment 1, the winding 6 is a plurality of groups, and the secondary air pipe 2 is arranged corresponding to each group of windings 6; and a plurality of secondary air pipes 2 are connected to the main air pipe 3.

[0029] In embodiment 2, the first fan 4 is a fan unit composed of a plurality of fans.

[0030] Preferably, the fan unit includes six cross-flow fans, and the ventilation air volume is 3600m³ / h under full load.

[0031] The effect achieved is that the plurality of fans work together and realize interconnection and backup. That is, when a single fan has a problem, maintenance can be carried out without stopping the machine.

[0032] In embodiment 3, the second fan 7 is arranged at the central position of the shell on the transformer body through a quick fan mounting mechanism.

[0033] The effect achieved is quick assembly and quick air exchange.

[0034] In embodiment 4, the assembly base 5 is a flange plate, and the assembly base is fixed to the shell of the transformer body through an angle code connector.

[0035] In embodiment 5, the transformer body is provided with a temperature monitoring device 1.

[0036] Preferably, the temperature monitoring device 1 is signal connected to DCS.

[0037] The effect achieved is over-temperature early warning for immediate maintenance.

[0038] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting and the claims.

[0039] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A novel air cooling mechanism of dry-type transformer, comprising a dry-type transformer body, wherein the dry-type transformer body comprises a winding chamber and an air flow chamber, and the winding chamber is arranged on the upper part of the air flow chamber; a secondary air pipe is arranged in the air flow chamber and corresponds to the bottom of the winding; the secondary air pipe is connected with a main air pipe; a quick mounting mechanism of a fan is fixed outside the shell of the transformer body; the quick mounting mechanism of the fan comprises a mounting base, and the main air pipe is arranged through the mounting base; a mounting hole is arranged in the mounting base in an array; a first fan is arranged outside the mounting base, and the fan is fastened to the mounting base through the mounting hole and communicates with the cavity of the main air pipe; a second fan is arranged on the dry-type transformer body and communicates with the cavity of the winding chamber. The winding assembly support is arranged in the winding bin, and the winding is arranged in the winding assembly support. The winding is in multiple groups, and the secondary air pipe corresponds to each group of winding; and a plurality of secondary air pipes are connected with the main air pipe. The first fan is a fan unit composed of multiple fans. The second fan is arranged on the central position of the shell of the transformer body through the quick mounting mechanism of the fan. The mounting base is a flange plate, and the mounting base is fixed to the shell of the transformer body through an angle code connector. The transformer body is provided with a temperature monitoring device. ​ 2. A novel air cooling mechanism for a dry-type transformer according to claim 1, characterized in that, ​ 3. The novel air cooling mechanism of a dry-type transformer according to claim 1, characterized in that, ​ 4. The novel air cooling mechanism of a dry-type transformer according to claim 1, characterized in that, ​ 5. The novel air cooling mechanism of a dry-type transformer according to claim 1, characterized in that, ​ 6. A novel air cooling mechanism for dry-type transformers according to claim 1, characterized in that, ​

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