CN201838425U - Air cooling structure for transformer - Google Patents

Abstract

The utility model relates to an air cooling structure for a transformer, which comprises a cooling fan disposed on the transformer. The air cooling structure is characterized in that an air passage is arranged at the bottom of the side, close to a wall, of the transformer, the air passage is provided with an air passage air inlet and an air passage air outlet, the cooling fan is disposed on the side, not close to the wall, of the transformer, the air passage air inlet of the air passage is communicated with an air outlet of the cooling fan, and the air passage air outlet of the air passage faces a conductive winding on the side, close to the wall, of the transformer. The cooling fan is disposed on the side, not close to the wall, of the transformer, the air passage is arranged at the bottom on the side, close to the wall, of the transformer winding, thereby the side, which is provided with the air passage, can be mounted close to the wall when the transformer is mounted close to fixed buildings such as the wall and the like, and after the fan is damaged, the fan can be detached for maintenance or replacement from the side, not close to the wall, of the transformer. The air cooling structure having the advantages can be applied to transformers having narrow mounting spaces.

Description

The air-cooled structure of transformer

Technical field

The utility model relates to the cooling structure of transformer, particularly the air-cooled structure of dry-type transformer.

Background technology

At present, powerful dry-type transformer comprises dry voltage regulating device, the isallobaric device product of dry type phase shifting transformer, uses characteristics such as flexible because it has, and in use occasions such as needs electric power energy delivery, pressure regulation or phase shifts, has obtained using widely.Generally all need cooling for powerful transformer, the conventional oil that has is invaded formula cooling, natural cooling and the air-cooled type of cooling etc.For air blast transformer, in the prior art as Chinese patent ZL200920062793.4, disclosed the structure that wind deflector is set in transformer case, thereby in cabinet, formed air-guiding aisle and will guide the gap of transformer and winding into from the cooling air that bottom of cabinet bulk enters; The cooling structure of this kind structure is equipped with the situation of the cabinet of relative closure in the outer periphery of transformer, and a kind of reasonable type of cooling of can yet be regarded as, but obvious structure more complicated particularly are not convenient especially when transformer being carried out operational maintenance and checking.Secondly, Chinese patent ZL200920234740.6 has also disclosed and a kind of cooling blower has been arranged on structure below the transformer fe core body, the cooling air of this structure can form reasonable cooling effect to the transformer bottom position, but for the lateral location of transformer, the cooling effect at the sidepiece position that the center winding of transformer is concentrated the most is poor in other words.

Summary of the invention

Dry-type transformer generally is installed in indoor use, and different local indoor installation environment has different characteristics; Secondly for powerful dry-type transformer or copper loss and the bigger transformer of iron loss, generally all need the sidepiece and/or the bottom of transformer are cooled off.The utility model attempts to design a kind of air-cooled structure of transformer, and not only the conductive winding to transformer has good air cooling effect when transformer is installed near wall, and is convenient to keep in repair and checks the equipment of air cooling system such as blower fan etc.The special air-cooled structure that proposes a kind of transformer of the utility model comprises the cooling blower that is arranged on the transformer for this reason; It is characterized in that, described transformer by the bottom position of wall side the air channel is set, described air channel has air channel air inlet and air channel air outlet; By the wall side described cooling blower is set the non-of described transformer, the air channel air inlet in described air channel is communicated with the air outlet of described cooling blower, and the air channel air outlet in described air channel is towards the conductive winding by the wall side of described transformer.

Because the conductive winding of dry-type transformer generally is the structure that exposes, the outer surface of conductive winding is coated with insulating material such as insulating varnish, insulating resin or insulation silk ribbon certainly certainly.Be inclusive with the conducting magnet core post in the conductive winding, after the assembling of conductive winding and iron core column is finished, with upper and lower stationary fixture frame they be fixed up again; Described for this reason transformer is the combination object that is formed by conductive winding, iron core column and stationary fixture combination back on substantially.Described transformer by the wall side, be that brainchild makes its side near the Li Qiang position when transformer is installed; Owing to be a kind of plan a kind of design in other words conj.or perhaps, therefore when transformer is not installed, should only be with respect to other non-relative position by the wall side by the wall side, one side of having incited somebody to action or having planned to install described air channel in other words is defined as by the wall side, and other side and end face, bottom surface just are non-by the wall side.Described for this reason cooling blower just can be arranged on also that these are non-by wall side for example other side and end face, the bottom surface etc. of transformer, and the adjustment that suitability can be made according to the concrete structure and the behaviour in service of transformer in the position specifically is set.

Described air channel is actually one to have the device of cavity volume and has air inlet and air outlet; The air channel air outlet in described air channel is towards the conductive winding of described transformer, the air channel air outlet that is meant described air channel is with the conductive winding of certain angle facing to described transformer, thereby makes the cooling air that blows out blow to the conductive winding of described transformer substantially and dispel the heat.Secondly the structure of flat generally can be made in described air channel, and the cylindrical structural of blower fan is saved the space relatively for this reason.In addition, wherein said air channel can be arranged on the following stationary fixture frame of described transformer, also can be arranged on the lower position of side of the conductive winding of described transformer.

According to said structure, because cooling blower is arranged on the non-by the wall side of transformer, and described cooling blower is installed in by the wall side, thereby after installing by wall, transformer not only can utilize cooling blower to the cooling of being dispelled the heat by the conductive winding of the transformer of wall side, and after damaging, keeps in repair by the wall side from non-easily cooling blower, blower fan being installed, body of wall can only be taken or hung out apart transformer and could keep in repair else if by the wall side; After transformer is installed by wall, can form gas channel naturally by means of the gap between transformer body and the body of wall, the cooling air that blows out from the air channel can be taken away the heat on the conductive winding by means of this passage again.Secondly, if with cooling blower be arranged on described transformer below, can utilize the clearance space between the bottom stationary fixture frame of transformer to hold described cooling blower, make the overall structure of transformer tightly short.In addition, the structure that described air channel is a flat is set, at least can under the cooling effect even the situation of raising that guarantee transformer, not only make the cooling fan maintenance of transformer convenient to the cooling effect of transformer, and the installation floor space of having saved transformer greatly.

Further technical scheme is, described cooling blower be arranged on described transformer below, the air port below the conductive winding of described transformer also is set on the described cooling blower.Wherein the air port below the conductive winding of described transformer can be arranged on the cooling blower that is communicated with described air channel, can also be an other cooling blower to be set separately and to utilize this other cooling blower to blow the bottom position of the conductive winding of transformer.So not only can utilize the cooling blower cooling transformer conductive winding lateral location and also can cool off the bottom position of conductive winding.

Further technical scheme can also be, by wall side and the bottom position that is positioned at described transformer the sidepiece blower fan is set the non-of described transformer, and the air outlet of described sidepiece blower fan is non-by wall side conductive winding towards described transformer.Like this after transformer is installed by wall, the wall side of leaning on of transformer utilizes cooling blower and air channel to give cooling heat dissipation, but not then utilize the heat radiation of sidepiece blower fan by the wall side, the all jammed side at transformer of blower fan that will the be all lower room of transformer for example not, and the blower fan that is arranged on the transformer sidepiece is installed with respect to the blower fan that is installed in the bottom and maintenance all than being easier to.Wherein said sidepiece blower fan can be arranged on the following stationary fixture frame of transformer, also can be arranged on the lower position of side of the conductive winding of transformer.

Owing to the utlity model has These characteristics and advantage, make the transformer that the utility model structure is installed not only can lean on wall install and also the maintenance maintenance blower fan easy, can be applied in the tightly short power transformer product of installing space for this reason.

Description of drawings

Fig. 1 is a perspective view of using transformer of the present utility model;

Fig. 2 is a perspective view of using the air cooling system member of transformer of the present utility model;

Fig. 3 is the perspective view in the air channel of air cooling system;

Fig. 4 is the perspective view of the cooling blower of air cooling system;

Fig. 5 is the fixing perspective view of the fixation clamp used of blower fan;

Fig. 6 is the cooling blower of air cooling system and the mounting structure schematic diagram between the base.

Fig. 7 is the cooling blower of air cooling system and the mounting structure schematic diagram between the air channel.

Fig. 8 is the mounting structure schematic diagram between sidepiece blower fan, cooling blower and the air channel of air cooling system.

Embodiment

8 couples of concrete application embodiment of the present utility model explain below in conjunction with accompanying drawing 1～accompanying drawing.

As shown in Figure 1, the conductive winding 11 of dry-type transformer 1 is the structure that exposes, the outer surface of conductive winding 11 applies insulating varnish and coated insulation silk ribbon, be inclusive with conducting magnet core post 12 in the conductive winding 11, last stationary fixture frame 13 and following stationary fixture frame 14 clamp conductive winding 11 from both direction up and down and assemble with iron core column 12.

As depicted in figs. 1 and 2, cooling blower 2 (among Fig. 1 owing to hidden and can not show by other member) is arranged between two steelframes of described stationary fixture frame 14 down, on the described stationary fixture frame 14 down of transformer 1, be connected air channel 3 is set, the air channel air inlet in described air channel 3 docks the air outlet of described cooling blower 2 by bolt, and the air channel air outlet in described air channel 3 is towards the conductive winding 11 of described transformer 1 side, and the lateral location of the described conductive winding 11 that the cooling air that blows out from the air outlet in described air channel 3 can be right is dispelled the heat like this.When transformer 1 is installed by fixed buildings such as walls, side, 3 place, air channel can be installed near body of wall like this, can form the passage of cooling blast naturally by means of the gap between transformer 1 device body and the body of wall.Secondly after described cooling blower 2 damages, can split out maintenance or replacing from transformer 1 bottom by the wall side non-.As a kind of equivalent embodiments, the bottom position of the side of the conductive winding 11 that described air channel 3 also can be arranged on.

As Fig. 3 and shown in Figure 7, described air channel 3 is flat cavity volume shape sidepiece air channel air inlet 31 is set, the top is provided with air channel air outlet 32, and wherein sidepiece air channel air inlet 31 docks with the air outlet of described cooling blower 2, and air outlet 32 distributes along the side of described transformer as far as possible.So can save the installation floor space of transformer greatly.Wherein said cooling blower 2 installing and locating are on underframe 21, and underframe 21 is fixed between two steelframes of described down stationary fixture frame 14 of described transformer 1 again, is about to described cooling blower 2 and is collected in the middle of the described stationary fixture frame 14 down.Reserve an air outlet (not drawing among the figure) again on the top of described cooling blower 2, the part wind that bloats of cooling blower 2 also can be dispelled the heat to the bottom position of the conductive winding 11 of described transformer 1 like this.

As Fig. 4 and shown in Figure 6, a foot portion of described cooling blower 2 is provided with first bolt hole 23, and this foot portion passes described first bolt hole 23 by bolt 223 and is connected on the described underframe 21.Another foot portion at described cooling blower 2 is provided with locator 22, as shown in Figure 5, described locator 22 is the T font, be provided with reference column 221 wherein, the both sides of reference column 221 are provided with hole 222, and described locator 22 passes another foot portion that hole 222 is connected in described cooling blower 2 by bolt; The protrusion block 24 of described underframe 21 is provided with the location hole adaptive with described reference column 221, like this when described cooling blower 2 is installed, at first will be connected in the location hole that the reference column 221 of described cooling blower 2 another foot portions inserts on the described block 24, after this tightening bolt 223 is fixed on described cooling blower 2 on the described underframe 21 again.According to said structure, when needing repairing described cooling blower 2, only need just described cooling blower 2 to be hauled out the stationary fixture frame 14 down from the described of described transformer 1, make maintenance very convenient from the non-connecting bolt of turning between bolt 223 and cooling blower 2 and the described air channel 3 by the wall side.

As Fig. 2 and shown in Figure 8, in another side bottom of described transformer 1 sidepiece blower fan 4 is set, described sidepiece blower fan 4 is connected on the described underframe 41, and described underframe 41 is connected on the described stationary fixture frame 14 down of described transformer again.Wherein said sidepiece blower fan 4 also adopts identical mode between described cooling blower 2 and its underframe 21 with connected mode between the described underframe 41, difference is, as described in Figure 8, the protrusion link stopper 42 of described underframe 41 is lower than the lower plane of described cooling blower 2, is convenient to described cooling blower 2 like this and takes apart in the middle of the stationary fixture frame 14 down from the described of transformer 1.Wherein said block 42 is mainly used in to be provided with the adaptive location hole of reference column and to described sidepiece blower fan 4 and is located.

Claims (8)

1. the air-cooled structure of transformer comprises the cooling blower that is arranged on the transformer; It is characterized in that, described transformer by the bottom position of wall side the air channel is set, described air channel has air channel air inlet and air channel air outlet; By the wall side described cooling blower is set the non-of described transformer, the air channel air inlet in described air channel is communicated with the air outlet of described cooling blower, and the air channel air outlet in described air channel is towards the conductive winding by the wall side of described transformer.

2. the air-cooled structure of transformer according to claim 1 is characterized in that, described cooling blower is arranged on the lower position of described transformer.

3. the air-cooled structure of transformer according to claim 2 is characterized in that, described air channel and described cooling blower are connected in respectively on the following stationary fixture frame of described transformer.

4. according to the air-cooled structure of claim 1,2 or 3 described transformers, it is characterized in that, by wall side and the bottom position that is positioned at described transformer the sidepiece blower fan is set the non-of described transformer, the air outlet of described sidepiece blower fan is non-by wall side conductive winding towards described transformer.

5. the air-cooled structure of transformer according to claim 3 is characterized in that, described cooling blower is connected on the described stationary fixture frame down by underframe; Foot portion at the base of described cooling blower is provided with first bolt hole, and this foot portion position can be passed on the following stationary fixture frame that described first bolt hole is connected in described transformer by bolt; Another foot portion at the base of described cooling blower is provided with reference column, is provided with and the adaptive location hole of described reference column on described underframe, and described reference column can insert in the described location hole adaptedly.

6. the air-cooled structure of transformer according to claim 4 is characterized in that, described sidepiece blower fan is connected in down on the stationary fixture frame by underframe; Base one foot portion at described sidepiece blower fan is provided with second bolt hole, and this foot portion position can be passed described second bolt hole by bolt and be connected on the described underframe; Another foot position at the base of described sidepiece blower fan installs reference column, is provided with and the adaptive location hole of described reference column on described underframe, and described reference column can insert in the described location hole adaptedly.

7. according to the air-cooled structure of claim 2 or 3 described transformers, it is characterized in that, the air port below the conductive winding of described transformer also is set on the described cooling blower.

8. according to the air-cooled structure of claim 1,2 or 3 described transformers, it is characterized in that described air channel is flat cavity volume shape structure.

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