CN209822441U - Cooling circulation protection device for oil-immersed transformer - Google Patents

Abstract

The utility model discloses a relate to cooling circulation protection device technical field for oil-immersed transformer specifically is a cooling circulation protection device for oil-immersed transformer, including oil-immersed transformer casing and circulative cooling case, the upper end of oil-immersed transformer casing is equipped with the cap, and the upper surface of cap is equipped with circulative cooling case, the utility model discloses oil-immersed transformer casing top is equipped with circulative cooling case, and circulative cooling case accessible circulating oil pump circulates the transformer oil circulation suction of oil-immersed transformer casing in oil-immersed transformer casing and circulative cooling case, reaches the transformer oil circulative cooling's that uses for a long time purpose in the oil-immersed transformer casing, guarantees that the device normally works, has increased the life of equipment, is fit for promoting.

Description

Cooling circulation protection device for oil-immersed transformer

Technical Field

The utility model relates to an oil-immersed transformer is with cooling cycle protection device technical field specifically is an oil-immersed transformer is with cooling cycle protection device.

Background

The transformer oil used by the oil-immersed transformer is petroleum liquid, has possibility of combustion and has defects in environmental protection. However, due to the characteristics of excellent performance and low price of transformer oil, most of power transformers still use transformer oil as an insulating and cooling medium, but the transformer oil still has the following disadvantages in the practical use process:

the transformer oil is overheated to appear easily after oil-immersed transformer uses for a long time, but the transformer oil is inside oil-immersed transformer, and difficult heat dissipation can reduce its life, influences oil-immersed transformer's normal work.

Therefore, a cooling circulation protection device for the oil-immersed transformer is provided to well solve the above disadvantages.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cooling circulation protection device for oil-immersed transformer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a cooling circulation protection device for an oil-immersed transformer comprises an oil-immersed transformer shell and a circulation cooling tank, wherein a shell cover is arranged at the upper end of the oil-immersed transformer shell, the circulation cooling tank is arranged on the upper surface of the shell cover, the upper surface of the circulation cooling tank is sealed with the shell cover through screw installation, the left side surface and the right side surface of the circulation cooling tank are respectively provided with a plurality of groups of cooling circulation pipes which are sequentially arranged from front to back and a plurality of groups of cooling oil outlet pipes which are sequentially arranged from front to back, the left ends of the plurality of groups of cooling circulation pipes are jointly communicated with the right end of a second tank, the lower ends of the plurality of groups of cooling oil outlet pipes are jointly communicated with the inside of the lower end of the right side of the oil-immersed transformer shell, one end of the cooling circulation pipe, which is far away from the second tank, is communicated with the inside of the, defeated oil pipe's lower extreme intercommunication is in the upper end of circulating oil pump, and the lower extreme intercommunication of circulating oil pump is established in the upper end intermediate position of a case, and the lower extreme intercommunication of a case is equipped with multiunit cooling and advances oil pipe, and the one end that multiunit cooling advances oil pipe and keep away from a case communicates jointly and establishes inside the upper left end of oil-immersed transformer casing.

Preferably, the outside surface that the cooling goes out the oil pipe is equipped with the cooling air duct, the cooling air duct is that semicircle trough-shaped structure is equipped with four groups, and four groups of cooling air ducts are the outer lane department that circular array form distributes at the cooling oil pipe, and the trend of cooling air duct is unanimous with the trend of cooling oil pipe.

Preferably, the metal heat dissipation plates are arranged in the circulating cooling box, the metal heat dissipation plates are of rectangular plate structures and are provided with a plurality of groups, the plurality of groups of metal heat dissipation plates are distributed in the circulating cooling box at equal intervals, and the outer edges of the metal heat dissipation plates and the inner wall of the circulating cooling box are fixedly welded.

Preferably, the upper end of the metal heat dissipation plate is movably attached to the lower surface of the box cover, and a plurality of groups of through holes are distributed on the surface of the metal heat dissipation plate in an equidistant and equal size mode.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the circulating cooling tank is arranged above the oil-immersed transformer shell, the circulating cooling tank can suck out and circulate the transformer oil in the oil-immersed transformer shell in a circulating manner in the oil-immersed transformer shell and the circulating cooling tank through the circulating oil pump, so that the purpose of cooling the transformer oil used in the oil-immersed transformer shell for a long time in a circulating manner is achieved, the normal work of the device is ensured, the service life of the device is prolonged, and the device is suitable for popularization;

2. the utility model discloses cooling goes out oil pipe structural design rationally, and the cooling goes out oil pipe surface and is equipped with four group's cooling air grooves, and the cooling air groove has the wind-guiding effect, increased and the air between area of contact, increased the cooling and gone out transformer oil cold and hot exchange's in the oil pipe efficiency, just carried out the primary cooling before transformer oil gets into the circulative cooling case, structural design is reasonable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the cooling oil outlet pipe of the present invention;

fig. 3 is a top view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 according to the present invention;

fig. 5 is a cross-sectional view taken along line B-B of fig. 3 according to the present invention.

In the figure: the oil-immersed transformer comprises an oil-immersed transformer shell 1, a circulating cooling tank 2, a cooling oil outlet pipe 3, a cooling circulating pipe 4, a cooling oil inlet pipe 5, a first tank 6, a second tank 7, a circulating oil pump 8, an oil delivery pipe 9, a shell cover 10, a box cover 11, a cooling air groove 12, a through hole 13 and a metal heat dissipation plate 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a cooling circulation protection device for an oil-immersed transformer comprises an oil-immersed transformer shell 1 and a circulation cooling tank 2, wherein a shell cover 10 is arranged at the upper end of the oil-immersed transformer shell 1, the circulation cooling tank 2 is arranged on the upper surface of the shell cover 10, a box cover 11 is arranged and sealed on the upper surface of the circulation cooling tank 2 through screws, a plurality of groups of cooling circulation pipes 4 arranged in sequence from front to back and a plurality of groups of cooling oil outlet pipes 3 arranged in sequence from front to back are respectively arranged on the left side surface and the right side surface of the circulation cooling tank 2, the left ends of the plurality of groups of cooling circulation pipes 4 are communicated with the right end of a second tank 7 together, the lower ends of the plurality of groups of cooling oil outlet pipes 3 are communicated with the inside of the lower end of the right side of the oil-immersed transformer shell 1 together, one end of the cooling oil outlet pipe 3 far away from the oil-immersed transformer shell, the left end intermediate position intercommunication of No. two casees 7 is equipped with defeated oil pipe 9, the lower extreme intercommunication of defeated oil pipe 9 is in the upper end of circulating oil pump 8, the lower extreme intercommunication of circulating oil pump 8 is established in the upper end intermediate position of a case 6, the lower extreme intercommunication of a case 6 is equipped with multiunit cooling oil inlet pipe 5, multiunit cooling oil inlet pipe 5 is kept away from the common intercommunication of one end of a case 6 and is established inside the upper left end of oil-immersed transformer casing 1, guaranteed that the transformer oil after the cooling of circulative cooling case 2 gets into inside oil-immersed transformer casing 1 from the upper end, and the transformer oil that flows out oil pipe 3 department of cooling has formed a cooling circulation system.

As shown in fig. 4, the cooling air ducts 12 are arranged on the outer side surface of the cooling oil outlet pipe 3, four groups of cooling air ducts 12 are arranged in a semicircular groove structure, the four groups of cooling air ducts 12 are distributed on the outer ring of the cooling oil outlet pipe 3 in a circular array, and the direction of the cooling air ducts 12 is the same as the direction of the cooling oil outlet pipe 3.

As shown in fig. 3, a plurality of groups of metal heat dissipation plates 14 are arranged inside the circulating cooling box 2, the plurality of groups of metal heat dissipation plates 14 are arranged in a rectangular plate structure, the plurality of groups of metal heat dissipation plates 14 are distributed in the circulating cooling box 2 in equal size, the outer edges of the metal heat dissipation plates 14 are fixedly welded with the inner wall of the circulating cooling box 2, the metal heat dissipation plates 14 serve the purpose of cooling transformer oil entering the circulating cooling box 2, the upper ends of the metal heat dissipation plates 14 are movably attached to the lower surface of the box cover 11, a plurality of groups of through holes 13 are distributed on the surface of the metal heat dissipation plates 14 in equal size, and the through holes 13 ensure that the transformer oil smoothly circulates in.

The working principle is as follows: firstly, through the power effect of circulating oil pump 8, the oil in oil-immersed transformer casing 1 is cooled off oil pipe 3 suction, go out oil pipe 3 primary cooling through the cooling, then through cooling circulation case 2 recooling, then arrange into No. two case 7 through cooling circulation pipe 4, intercommunication circulating oil pump 8 on the defeated oil pipe 9 between No. two case 7 and No. one case 6, the setting of No. one case 6 and No. two case 7, make the multiunit cooling tube can use a circulation head pump 8, practice thrift the cooling cost, finally, the cooling oil that gets into No. one case 6 from No. two case 7 is arranged into oil-immersed transformer casing 1 again from cooling oil pipe 5 and is used.

In the utility model, the circulating cooling tank 2 is arranged above the oil-immersed transformer shell 1, the circulating cooling tank 2 can suck out the transformer oil in the oil-immersed transformer shell 1 circularly through the circulating oil pump 8 and circulate the transformer oil in the oil-immersed transformer shell 1 and the circulating cooling tank 2, so that the purpose of circularly cooling the transformer oil used for a long time in the oil-immersed transformer shell 1 is achieved, the normal work of the device is ensured, the service life of the device is prolonged, and the device is suitable for popularization;

the utility model discloses cooling oil pipe 3 structural design is reasonable, and the cooling goes out 3 surfaces of oil pipe and is equipped with four group's cooling air ducts 12, and cooling air duct 12 has the wind-guiding effect, increased and the air between area of contact, increased the cooling and gone out transformer oil cold and heat exchange's in the oil pipe 3 efficiency, just carried out the precooling before transformer oil gets into circulative cooling case 2, and structural design is reasonable, and wherein the model of circulating oil pump 8 can use: CB-B16/20/32.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides an oil-immersed transformer is with cooling cycle protection device, includes oil-immersed transformer casing (1) and circulative cooling case (2), its characterized in that: the oil-immersed transformer comprises an oil-immersed transformer shell (1), wherein a shell cover (10) is arranged at the upper end of the oil-immersed transformer shell (1), a circulating cooling tank (2) is arranged on the upper surface of the shell cover (10), a box cover (11) is arranged and sealed on the upper surface of the circulating cooling tank (2) through screws, a plurality of groups of cooling circulation pipes (4) which are sequentially arranged from front to back and a plurality of groups of cooling oil outlet pipes (3) which are sequentially arranged from front to back are respectively arranged on the left side surface and the right side surface of the circulating cooling tank (2), the left ends of the groups of cooling circulation pipes (4) are jointly communicated with the right end of a second box (7), the lower ends of the groups of cooling oil outlet pipes (3) are jointly communicated with the inside of the lower end of the right side of the oil-immersed transformer shell (1), one end, far away from the second box (7), of the cooling circulation pipe (4) is communicated, the left end intermediate position intercommunication of No. two case (7) is equipped with defeated oil pipe (9), and the lower extreme intercommunication of defeated oil pipe (9) is in the upper end of circulating oil pump (8), and the upper end intermediate position at a case (6) is established in the lower extreme intercommunication of circulating oil pump (8), and the lower extreme intercommunication of a case (6) is equipped with multiunit cooling and advances oil pipe (5), and the one end that multiunit cooling advances oil pipe (5) and keep away from a case (6) communicates jointly and establishes inside the upper left end of oil-immersed transformer casing (1).

2. The cooling circulation protection device for the oil-filled transformer according to claim 1, wherein: the outside surface that the cooling goes out oil pipe (3) is equipped with cooling air duct (12), cooling air duct (12) are semicircle groove-shaped structure and are equipped with four groups, and four groups of cooling air duct (12) are circular array form and distribute in the outer lane department that the cooling goes out oil pipe (3), and the trend of cooling air duct (12) is unanimous with the trend that the cooling goes out oil pipe (3).

3. The cooling circulation protection device for the oil-filled transformer according to claim 1, wherein: the metal heat dissipation plate is characterized in that metal heat dissipation plates (14) are arranged inside the circulating cooling box (2), a plurality of groups of metal heat dissipation plates (14) are arranged in a rectangular plate-shaped structure, the plurality of groups of metal heat dissipation plates (14) are distributed in the circulating cooling box (2) in an equidistance and equal size mode, and the outer edges of the metal heat dissipation plates (14) and the inner wall of the circulating cooling box (2) are fixedly welded.

4. The cooling circulation protection device for the oil-filled transformer according to claim 3, wherein: the upper end of the metal radiating plate (14) is movably attached to the lower surface of the box cover (11), and a plurality of groups of through holes (13) are distributed on the surface of the metal radiating plate (14) at equal intervals and in equal size.