CN218159873U

CN218159873U - Liquid-immersed transformer with protection box

Info

Publication number: CN218159873U
Application number: CN202221408416.3U
Authority: CN
Inventors: 蒋卫民
Original assignee: Individual
Current assignee: Hunan Huarui Yineng Electric Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-12-27
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a liquid immersed transformer with a protection box, which comprises a box body and a box cover, wherein the left side and the right side of the box body are provided with a high-voltage sleeve and a low-voltage sleeve, and the high-voltage sleeve and the low-voltage sleeve are both arranged on the side walls at the two sides of the width direction of the box body; the high tension bushing and the low voltage bushing outside are provided with the protection box respectively, the utility model aims at providing a contain protection box liquid immersion transformer, adopt the side mode of being qualified for the next round of competitions to reduce the volume of transformer, the transport of the transformer of being convenient for, the setting of protection box can safety protection and avoid the wiring sleeve to be corroded.

Description

Liquid-immersed transformer with protection box

Technical Field

The utility model belongs to the technical field of electric power potential device, specifically be a contain protection box liquid immersion transformer.

Background

The liquid-immersed transformer uses oil as a main insulation means of the transformer and depends on the oil as a cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, forced oil circulation and the like; between the silicon steel sheet layers of the oil immersed transformer, oil can permeate into the transformer after being immersed in the transformer for a long time, and the transformer oil has elasticity and a buffering effect, so the oil immersed transformer has low noise; the main components of the liquid-immersed transformer comprise an iron core, a winding, an oil tank, an oil conservator, a breather, an explosion-proof tube (a pressure relief valve), a radiator, an insulating sleeve, a tap switch, a gas relay, a thermometer, an oil purifier and the like; the liquid-immersed transformer is suitable for transformation of power grids of urban and rural and industrial and mining enterprises, and is more suitable for combined transformers and transformers for pre-installed transformer substations.

The existing mode of top outgoing lines is generally adopted in the actual use process, the adoption of the mode can lead to the large size of a transformer, the transformer is inconvenient to convey, meanwhile, the wiring sleeve is generally exposed in the environment and is easy to corrode after being used for a long time, and further, the transformer short circuit is serious, and the transformer is on fire.

SUMMERY OF THE UTILITY MODEL

The utility model aims at above problem, provide a contain protection box liquid-immersed transformer, adopt the side mode of being qualified for the next round of competitions to reduce the volume of transformer, the transport of the transformer of being convenient for, the setting of protection box can safety protection and avoid the wiring sleeve to be corroded.

In order to achieve the purpose, the technical scheme adopted by the utility model is a liquid-immersed transformer with a protection box, which comprises a box body and a box cover, wherein a high-voltage sleeve and a low-voltage sleeve are arranged on the left side and the right side of the box body, and the high-voltage sleeve and the low-voltage sleeve are arranged on the side walls on the two sides of the box body in the width direction; and the outer sides of the high-voltage sleeve and the low-voltage sleeve are respectively provided with a protection box.

Optionally, the high-voltage bushing and the low-voltage bushing are respectively installed on two sides of the box body, and a through hole matched with the connecting sleeve is formed in the side wall of the box body.

Optionally, the high-voltage bushing and the low-voltage bushing are installed on the box body through installation plates arranged on two sides, and the installation plates are connected with the side wall of the box body through a connection sleeve.

Optionally, a mounting hole is formed in the mounting plate, a mounting bolt is arranged at the edge of the mounting hole, and a fixing plate is arranged on the mounting bolt.

Optionally, the mounting boss of the high-voltage bushing or the low-voltage bushing is fixed in the mounting hole through a fixing plate, and a sealing gasket is arranged between the mounting boss of the bushing and the box body.

Optionally, the protection box comprises a side plate, a cover plate and a bottom plate, wherein the bottom plate is arranged on one side of the side plate, the cover plate is arranged on the other side of the side plate, and a mounting notch for the bushing to penetrate out is formed in the bottom plate; the mounting groove opening edge with all set up the bolt hole on the edge of mounting panel, the bottom plate passes through bolt and mounting panel fixed connection, be provided with sealed the pad between mounting panel and the bottom plate.

Optionally, be provided with the chimb on the curb plate lateral wall, the chimb with be provided with the round bolt hole on the apron, the chimb with be connected through the bolt between the apron, the chimb with be provided with sealed the pad between the apron.

Optionally, the edge of the cover plate is provided with a circle of bent edge, and the length of the bent edge is greater than the width of the sum of the convex edge and the sealing gasket.

Optionally, a square notch is formed in the bottom of the side plate, and a movable plate is arranged outside the square notch; the square notch is connected with the movable plate through a bolt.

Optionally, the both sides of box length direction are provided with the fin respectively, the upper and lower tip of fin all is provided with the cooling tube, the cooling tube is connected through the lateral wall with the box, be provided with the through-hole that is used for transformer oil business turn over on the lateral wall of box.

The utility model has the advantages that: the liquid-immersed transformer with the protection box has the advantages that the volume of the transformer can be reduced by adopting a side outgoing line mode, the transformer is convenient to convey, and the protection box can be arranged to safely protect and prevent a wiring sleeve from being corroded.

1. The arrangement of the connecting sleeve, the mounting plate and the through hole can save the space inside the box body, so that the iron core and the coil can be conveniently placed in the box body, and meanwhile, the arrangement of the through hole can facilitate the connection of the iron core and the coil with the sleeve; through directly connecting the radiating pipe on the side wall of the box body, the volume occupied by the radiator is further reduced, and the whole transformer is convenient to transport

2. The arrangement of the protection box can play a role in protecting the sleeve, and the joint between the bottom plate and the mounting plate is sealed through the arrangement of the sealing gasket, so that rainwater can be prevented from leaking into the protection box from the joint, and the sleeve is prevented from being corroded by the rainwater; the limit setting of bending of apron can play a guard action to the chimb of curb plate, avoids the rainwater directly to drench on the sealing pad, also avoids the rainwater to stop in gap department simultaneously, avoids dismantling the apron that the water drips in the protection box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is the schematic sectional structural view of the present invention.

Fig. 3 is a schematic view of the three-dimensional structure of the protection box of the present invention.

Fig. 4 is a schematic view of a part a of the enlarged structure in fig. 1.

Fig. 5 is a schematic view of a part of the enlarged structure at B in fig. 3.

The text labels in the figures are represented as: 1. a box body; 2. a box cover; 3. a heat sink; 4. a high voltage bushing; 5. a low-pressure bushing; 6. a through hole; 7. a protection box; 31. a radiating pipe; 32. a connecting flange; 61. connecting sleeves; 62. mounting a plate; 63. A fixing plate; 64. a seal ring; 65. installing a bolt; 71. a side plate; 72. a cover plate; 73. a base plate; 74. installing a notch; 75. a gasket; 76. a convex edge; 77. a square notch; 78. a movable plate.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is usually placed when in use, and are used for convenience of description and simplification of description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "suspended" and the like do not imply that the components are absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The situation that the transformer is overlarge in size due to the mode of outgoing lines at the top of the transformer is avoided; and the sleeve is easy to corrode when exposed to air and is safe to contact electric shock. As shown in fig. 1-2, the specific structure of the present invention is: a liquid-immersed transformer with a protection box comprises a box body 1 and a box cover 2, wherein the box body 1 is a square box body 1, the front side wall and the rear side wall of the box body 1 are wide, the left side wall and the right side wall of the box body are narrow, six radiating fins 3 are symmetrically arranged on the front side and the rear side of the box body 1, a high-voltage bushing 4 and a low-voltage bushing 5 are respectively arranged on the left side and the right side of the box body 1, and the high-voltage bushing 4 and the low-voltage bushing 5 are both arranged on the side walls of the two narrow sides of the box body 1; the outer sides of the high-voltage sleeve 4 and the low-voltage sleeve 5 are respectively provided with a protection box 7 for protecting the sleeves; the high-voltage bushing 4 and the low-voltage bushing 5 are both arranged on mounting plates 62 arranged on two sides of the box body 1, the mounting plates 62 are connected with the side wall of the box body 1 through a connecting sleeve 61, and a through hole 6 matched with the connecting sleeve 61 is arranged on the side wall of the box body 1; the space inside the box body 1 can be saved through the arrangement of the connecting sleeves 61, the mounting plate 62 and the through holes 6, the iron cores and the coils can be placed in the box body 1 conveniently, and meanwhile the arrangement of the through holes 6 can facilitate the connection of the iron cores and the coils with the sleeves.

The problem that the transformer is too large in size due to the fact that the radiator is installed with the transformer box body through the connecting pipe is solved; the upper end and the lower end of the radiating fin 3 are both provided with a radiating pipe 31, the radiating pipe 31 is connected with the side wall of the box body 1, and the side wall of the box body 1 is provided with a through hole for the transformer oil to enter and exit; the radiating pipe 31 is directly connected to the side wall of the box body 1 through the connecting flange 32, so that the occupied volume of the radiator is further reduced, and the transportation of the whole transformer is facilitated.

Specifically, the radiating pipe 31 may be connected to the sidewall of the case 1 by a connection flange 32.

In order to avoid leakage of transformer oil from a sleeve joint, mounting holes for mounting sleeves are arranged on the mounting plate 62 at intervals, mounting bolts 65 are arranged at the edges of the mounting holes, fixing plates 63 are arranged on the mounting bolts 65, mounting bosses on the sleeves are fixed in the mounting holes through the fixing plates 63, and sealing gaskets are arranged between the mounting bosses of the sleeves and the mounting plate 62; the sleeve is mounted on the mounting plate 62 through the fixing plate 63 and the mounting bolt 65 while being provided with the gasket so that the inside of the case 1 can be well sealed. The protection box 7 comprises a side plate 71, a cover plate 72 and a bottom plate 73, wherein the bottom plate 73 is arranged on one side of the side plate 71, the cover plate 72 is arranged on the other side of the side plate 71, and an installation notch 74 for penetrating out of the sleeve is formed in the bottom plate 73; bolt holes are formed in the edges of the mounting notches 74 and the edges of the mounting plate 62, the base plate 73 is fixedly connected with the mounting plate 62 through bolts, and a sealing gasket 75 is arranged between the mounting plate 62 and the base plate 73; the arrangement of the protection box 7 can play a role in protecting the sleeve, the seam between the bottom plate 73 and the mounting plate 62 is sealed through the arrangement of the sealing gasket 75, rainwater can be prevented from leaking into the protection box 7 from the seam, and the sleeve is prevented from being corroded by the rainwater. Be provided with chimb 76 on the curb plate 71 lateral wall, chimb 76 is located the one side relative with bottom plate 73, chimb 76 with be provided with the round bolt hole on the apron 72, chimb 76 with be connected through the bolt between the apron 72, chimb 76 with be provided with sealed the pad between the apron 72. A circle of bent edge is arranged at the edge of the cover plate 72, and the length of the bent edge is greater than the width of the sum of the convex edge 76 and the sealing gasket; the bent edge of the cover plate 72 can protect the convex edge 76 of the side plate 71, so that rainwater is prevented from directly spraying on the sealing pad, meanwhile, the rainwater is prevented from staying in the gap, and the water body is prevented from dripping into the protection box 7 when the cover plate 72 is detached. The bottom of the side plate 71 is provided with a square notch 77, and a movable plate 78 is arranged outside the square notch 77; the square notch 77 is bolted to the movable plate 78.

When the protective box is used specifically, the sleeve is fixed on the mounting plate 62 through the nut and the fixing plate 63, and the protective box 7 is fixed on the mounting plate 62; the high-voltage wire and the low-voltage wire of the coil are respectively connected to the high-voltage bushing and the low-voltage bushing, the protection box 7 is installed on the installation plate 62 through bolts, the movable plate 78 is taken down after the transformer is conveyed to an installation place, and the external wire extends into the protection box 7 from the square notch 77 to be connected with the bushing.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been described herein using specific examples, which are presented only to aid in understanding the methods and core concepts of the present invention. The foregoing are only preferred embodiments of the present invention, and it should be noted that there are practically unlimited specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features described above can also be combined in a suitable manner; the application of the concepts and technical solutions of the present invention to other applications, with or without any modifications, shall be considered as the scope of the present invention.

Claims

1. The utility model provides a contain protection box liquid-immersed transformer which characterized in that: the high-voltage insulation box comprises a box body (1) and a box cover (2), wherein a high-voltage sleeve (4) and a low-voltage sleeve (5) are arranged on the left side and the right side of the box body (1), and the high-voltage sleeve (4) and the low-voltage sleeve (5) are arranged on the side walls of the two sides of the box body (1) in the width direction; and the outer sides of the high-voltage sleeve (4) and the low-voltage sleeve (5) are respectively provided with a protection box (7).

2. The liquid-immersed transformer with the protection box according to claim 1, wherein: the high-voltage bushing (4) and the low-voltage bushing (5) are respectively installed on two sides of the box body (1), and through holes (6) matched with the connecting sleeves (61) are formed in the side wall of the box body (1).

3. The liquid-immersed transformer with the protection box according to claim 2, wherein: high-voltage bushing (4) with low pressure sleeve pipe (5) are installed through mounting panel (62) that both sides set up on box (1), mounting panel (62) are connected with the lateral wall of box (1) through adapter sleeve (61).

4. The liquid-immersed transformer with the protection box according to claim 3, wherein: be provided with the mounting hole on mounting panel (62), mounting hole edge is provided with mounting bolt (65), be provided with fixed plate (63) on mounting bolt (65).

5. The liquid-immersed transformer with the protection box according to claim 4, wherein: the mounting boss of the high-voltage bushing (4) or the low-voltage bushing (5) is fixed in the mounting hole through the fixing plate (63), and a sealing gasket is arranged between the mounting boss of the bushing and the box body (1).

6. The liquid-immersed transformer with the protection box according to claim 4, wherein: the protective box (7) comprises a side plate (71), a cover plate (72) and a bottom plate (73), wherein the bottom plate (73) is arranged on one side of the side plate (71), the cover plate (72) is arranged on the other side of the side plate, and a mounting notch (74) for a sleeve to penetrate out is formed in the bottom plate (73); mounting groove opening (74) edge with all set up the bolt hole on the edge of mounting panel (62), bottom plate (73) pass through bolt and mounting panel (62) fixed connection, be provided with sealed pad (75) between mounting panel (62) and bottom plate (73).

7. The liquid-immersed transformer with the protection box according to claim 6, wherein: be provided with chimb (76) on curb plate (71) lateral wall, chimb (76) with be provided with the round bolt hole on apron (72), chimb (76) with be connected through the bolt between apron (72), chimb (76) with be provided with sealed the pad between apron (72).

8. The liquid-immersed transformer with the protection box according to claim 7, wherein: the edge of apron (72) is provided with the round limit of bending, limit length of bending is greater than the width of chimb (76) and sealed the sum of the two.

9. The liquid-immersed transformer with the protection box according to claim 6, wherein: the bottom of the side plate (71) is provided with a square notch (77), and a movable plate (78) is arranged outside the square notch (77); the square notch (77) is connected with the movable plate (78) through a bolt.

10. The liquid-immersed transformer with the protection box according to claim 1, wherein: box (1) length direction's both sides are provided with fin (3) respectively, the upper and lower tip of fin (3) all is provided with cooling tube (31), cooling tube (31) are connected through the lateral wall with box (1), be provided with the through-hole that is used for transformer oil business turn over on the lateral wall of box (1).