CN216719657U

CN216719657U - Dry-type transformer is with preventing short circuit structure

Info

Publication number: CN216719657U
Application number: CN202220141282.7U
Authority: CN
Inventors: 黄伟; 黄信乐
Original assignee: China Zhongbian Group Shanghai Transformer Co ltd
Current assignee: China Zhongbian Group Shanghai Transformer Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-06-10
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a short circuit prevention structure for a dry type transformer, which comprises a water collection tank and a box body, wherein two sides of the bottom surface of the water collection tank are fixedly connected with supporting plates, and the bottom ends of the supporting plates extend to the inner side of the box body and are in sliding connection with the box body; according to the utility model, rainwater is collected through the water collecting groove, so that the rainwater is prevented from entering the box body to cause a circuit short circuit, when the rainwater amount is larger, the drainage quantity of the drainage hole cannot drain the rainwater in time, the rainwater in the water collecting groove is continuously increased, the weight is further increased, the supporting plate is enabled to overcome the tensile force of the tension spring to move downwards and extend into the box body, the spring block is further driven to move synchronously, the second rack is enabled to move vertically upwards through the meshing of the first rack, the second rack and the gear, the rain shielding cloth is pulled to seal the heat dissipation window, the rainwater slides to the inclined plane at the bottom of the heat dissipation window along the rain shielding cloth and is drained outwards through the inclined plane, and the phenomenon that the transformer short circuit damage is caused by the fact that the rainwater enters the box body from the heat dissipation window is avoided.

Description

Dry-type transformer is with preventing short circuit structure

Technical Field

The utility model belongs to the technical field related to transformer protection, and particularly relates to a short-circuit prevention structure for a dry type transformer.

Background

The dry type transformer mainly comprises an iron core formed by silicon steel sheets and coils poured by epoxy resin, an insulating cylinder is arranged between the high-voltage coils and the low-voltage coils to increase electrical insulation, the coils are supported and restrained by cushion blocks, and fasteners lapped by parts of the coils all have anti-loosening performance. When the dry type transformer is used, in order to facilitate heat dissipation treatment of the dry type transformer, heat dissipation ports or heat dissipation windows are usually formed in two sides of the dry type transformer, and when the dry type transformer is in rainy days, rainwater easily enters the box body from the heat dissipation ports or the heat dissipation windows, so that the dry type transformer is short-circuited.

Application number is CN201811256433.8 discloses an outdoor short circuit dry-type transformer that prevents, the power distribution box comprises a box body, the welding of box top has the sleeve pipe, sleeve pipe top inboard is provided with first spacing ring, sleeve pipe internally mounted has supporting spring, the intraductal portion of cover alternates there is the loop bar, the loop bar bottom is provided with the second spacing ring, and the device can be collected the rainwater through setting up the water catch bowl to through the weight extrusion supporting spring of rainwater, make inside the shielding plate card goes into positioning channel section, can effectually prevent that the rainwater from getting into the transformer from the heat dissipation window inside, lead to the transformer inside short circuit or even the phenomenon of getting on fire of appearing, the effectual frequent economic input that changes the transformer and bring of having avoided, through first spacing ring and second spacing ring, when can effectually preventing windy weather, the loop bar is from the inside roll-off of sleeve pipe.

The existing dry-type transformer short-circuit prevention technology has the following problems: when the rainwater is large, the rainwater is easy to accumulate in the positioning clamping groove of the heat dissipation window, so that the rainwater overflows the shielding plate and further enters the box body, the potential safety hazard of short circuit of the circuit still exists, the normal use of the dry-type transformer is influenced, and the maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a short-circuit prevention structure for a dry type transformer, which aims to solve the problem of short circuit of a circuit caused by rainwater entering a box body in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a dry-type transformer is with preventing short circuit structure, includes water catch bowl and box, the bottom surface both sides fixedly connected with backup pad of water catch bowl, the bottom of backup pad extend the box the inboard and with box sliding connection, heat dissipation window has been seted up to the side of box, heat dissipation window's inside wall fixedly connected with filter screen, heat dissipation window's bottom is equipped with the inclined plane, be provided with on the inclined plane and shelter from the subassembly, heat dissipation window's top is provided with and is used for the pulling to shelter from the transmission assembly that the subassembly will heat dissipation window block when the water catch bowl moves down.

Preferably, the shielding assembly comprises a first shaft rod, two ends of the first shaft rod are fixedly connected with the box body, a coil spring is fixedly wound on the outer side of the first shaft rod, a rain shielding cloth is wound on the outer side of the coil spring, one end of the rain shielding cloth is fixedly connected with the coil spring, the other end of the rain shielding cloth is fixedly connected with the bonding block, and pull strips are fixedly connected to two sides of the bonding block.

Preferably, the transmission assembly comprises a spring block, the spring block is fixed on the outer wall of one side of the bottom of the supporting plate, the top end of the spring block is fixedly connected with a tension spring, and one end of the tension spring is fixedly connected with the inner wall of the top of the box body.

Preferably, a first rack is fixedly connected to the side wall of the spring block, a contraction groove is formed above the heat dissipation window, a through groove communicated with the inner side of the box body is formed in one side of the contraction groove, a second shaft rod is rotatably connected to the inner side of the through groove, a gear is fixedly connected to the outer wall of the second shaft rod, and the gear is meshed with the first rack.

Preferably, the inner side of the shrinkage groove is slidably connected with a limiting sliding block, the top end of the limiting sliding block is fixedly connected with a second rack, and the second rack is meshed with the gear.

Preferably, one end of the brace is fixedly connected with the bottom surface of the limiting slide block.

Preferably, the side wall of the water collecting tank is provided with a drain hole.

Compared with the existing dry-type transformer short circuit prevention technology, the utility model provides a short circuit prevention structure for a dry-type transformer, which has the following beneficial effects:

1. according to the transformer short-circuit protection device, rainwater is collected through the water collecting groove, the rainwater is prevented from entering the box body to cause circuit short circuit, when the rainwater amount is large, the drainage quantity of the drainage hole cannot drain the rainwater timely, the rainwater in the water collecting groove is increased continuously, the weight is increased, the supporting plate moves downwards to extend into the box body by overcoming the tensile force of the tension spring and further drives the spring block to move synchronously, the second rack moves vertically upwards through the meshing of the first rack, the second rack and the gear, the rain shielding cloth is pulled to seal the heat dissipation window, the rainwater slides to the inclined plane at the bottom of the heat dissipation window along the rain shielding cloth and is drained outwards through the inclined plane, and the phenomenon that the transformer short circuit damage is caused when the rainwater enters the box body from the heat dissipation window is avoided;

2. when the rainfall is reduced, the rainwater in the water collecting tank can be gradually discharged from the water discharging holes, the water collecting tank is restored to the initial height under the elastic pulling of the tension spring, meanwhile, the rain shielding cloth is wound on the first shaft rod through the coil spring, the heat dissipation window is opened, and the dry-type transformer in the box body can still dissipate heat.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

fig. 1 is a schematic diagram of a short-circuit prevention structure for a dry type transformer according to the present invention;

FIG. 2 is a schematic view of a partial cross-sectional structure of a box according to the present invention;

FIG. 3 is a schematic structural diagram of a shielding assembly according to the present invention;

fig. 4 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a water collection tank; 2. a box body; 3. a support plate; 4. a drain hole; 5. a heat dissipation window; 51. a contraction groove; 52. a through groove; 53. filtering with a screen; 54. a bevel; 6. a shielding component; 61. a first shaft lever; 62. a coil spring; 63. a rain cloth; 64. bonding the blocks; 65. bracing; 7. a transmission assembly; 71. a spring block; 72. a tension spring; 73. a first rack; 74. a second shaft lever; 75. a gear; 76. a second rack; 77. and a limiting sliding block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a dry-type transformer is with preventing short circuit structure, including water catch bowl 1 and box 2, the bottom surface both sides fixedly connected with backup pad 3 of water catch bowl 1, the bottom of backup pad 3 extend the inboard of box 2 and with box 2 sliding connection, backup pad 3 passes through sealing washer sealing process with the junction of box 2, collect the rainwater under the plum rain weather through water catch bowl 1, wash port 4 has been seted up on the lateral wall of water catch bowl 1, be used for discharging the rainwater from wash port 4, when the rainfall is great, the unable timely discharge rainwater of the discharge capacity of wash port 4, make the rainwater in the water catch bowl 1 continuously increase, and then increased weight, make backup pad 3 move down and stretch into in the box 2.

It should be noted that, a heat dissipation window 5 is disposed on a side surface of the box body 2, and can dissipate heat and cool the internal dry-type transformer, a filter screen 53 is fixedly connected to an inner side wall of the heat dissipation window 5, and filters dust in the air, an inclined plane 54 is disposed at a bottom of the heat dissipation window 5, so that rainwater can slide along the inclined plane 54, and can be prevented from entering the box body 2 from the heat dissipation window 5, a shielding assembly 6 is disposed on the inclined plane 54, the shielding assembly 6 includes a first shaft 61, two ends of the first shaft 61 are fixedly connected with the box body 2, a coil spring 62 is fixedly wound on an outer side of the first shaft 61, a rain shielding cloth 63 is wound on an outer side of the coil spring 62, one end of the rain shielding cloth 63 is fixedly connected with the coil spring 62, the other end of the rain shielding cloth 63 is fixedly connected with an adhesive block 64, two sides of the adhesive block 64 are fixedly connected with a brace 65, and in a state that the rain shielding cloth 63 is pulled by an elastic force of the coil spring 62 to be rolled on an outer side of the first shaft 61, the heat dissipation window 5 is opened, so that the internal dry-type transformer can be normally cooled.

It is worth proposing that the transmission assembly 7 that is used for pulling when the water catch bowl 1 moves down and shelters from subassembly 6 and blocks heat dissipation window 5 is provided with in the top of heat dissipation window 5, and transmission assembly 7 includes spring block 71, and spring block 71 is fixed on the bottom one side outer wall of backup pad 3, and the top fixedly connected with extension spring 72 of spring block 71, the one end of extension spring 72 and the top inner wall fixed connection of box 2, when backup pad 3 moves down, can drive spring block 71 synchronous motion, and then tensile extension spring 72.

It should be noted that the side wall of the spring block 71 is fixedly connected with a first rack 73, the upper portion of the heat dissipation window 5 is provided with a contraction groove 51, one side of the contraction groove 51 is provided with a through groove 52 communicated with the inner side of the box body 2, the inner side of the through groove 52 is rotatably connected with a second shaft rod 74, the outer wall of the second shaft rod 74 is fixedly connected with a gear 75, the gear 75 is meshed with the first rack 73, the spring block 71 moves downwards and simultaneously drives the first rack 73 to move downwards, and the gear 75 rotates anticlockwise through the meshing of the first rack 73 and the gear 75.

Further, a limit slider 77 is slidably connected to the inner side of the contraction groove 51, one end of the brace 65 is fixedly connected to the bottom surface of the limit slider 77, a second rack 76 is fixedly connected to the top end of the limit slider 77, the second rack 76 is meshed with the gear 75, when the gear 75 rotates counterclockwise, the second rack 76 moves vertically upward to be contracted in the contraction groove 51 through the meshing relationship between the gear 75 and the second rack 76, and at the same time, under the sliding limit of the limit slider 77 and the contraction groove 51.

The working principle and the using process of the utility model are as follows: in an initial state, as shown in fig. 1 and 4, the waterproof cloth 63 is wound on the first shaft rod 61, the heat dissipation window 5 is opened, and the internal dry-type transformer is normally cooled;

the rainwater is collected through the water collecting tank 1 in plum rain weather, so that the rainwater is prevented from entering the box body 2 to cause short circuit of a circuit, the side wall of the water collecting tank 1 is provided with the drain hole 4, the rainwater can be timely drained from the drain hole 4 when the rainwater quantity is small, the water collecting tank 1 is kept at a fixed height, and when the rainwater quantity is large, the drainage flux of the drain hole 4 cannot timely drain the rainwater, so that the rainwater in the water collecting tank 1 is continuously increased, the weight is further increased, and the supporting plate 3 overcomes the tensile force of the tension spring 72 and moves downwards to extend into the box body 2;

as shown in fig. 2, when the support plate 3 moves downwards, the spring block 71 can be driven to move synchronously, the spring block 71 drives the first rack 73 to move downwards, the first rack 73 is meshed with the gear 75, so that the gear 75 rotates anticlockwise, the gear 75 is meshed with the second rack 76, and meanwhile, under the sliding limit of the limit slider 77 and the contraction groove 51, the second rack 76 moves vertically upwards to be contracted in the contraction groove 51;

the stay 65 is pulled by the limit slide block 77 to overcome the elasticity of the coil spring 62 to unfold the rain shielding cloth 63, so that the heat dissipation window 5 is blocked, rainwater slides to the inclined plane 54 at the bottom of the heat dissipation window 5 along the rain shielding cloth 63 and is discharged outwards from the inclined plane 54, and the rainwater is prevented from entering the box body 2 from the heat dissipation window 5;

when the rainfall is reduced, the rainwater in the water collecting tank 1 can be gradually discharged from the water discharging hole 4, and then the water collecting tank 1 is restored to the original height under the elastic pulling of the tension spring 72, and at the same time, the waterproof cloth 63 is wound on the first shaft 61 through the coil spring 62, so that the heat dissipation window 5 is opened, and the dry type transformer inside the box body 2 can still dissipate the heat.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dry-type transformer is with preventing short circuit structure, includes water catch bowl (1) and box (2), its characterized in that: bottom surface both sides fixedly connected with backup pad (3) of water catch bowl (1), the bottom of backup pad (3) extend the inboard of box (2) and with box (2) sliding connection, heat dissipation window (5) have been seted up to the side of box (2), the inside wall fixedly connected with filter screen (53) of heat dissipation window (5), the bottom of heat dissipation window (5) is equipped with inclined plane (54), be provided with on inclined plane (54) and shelter from subassembly (6), the top of heat dissipation window (5) is provided with and is used for when water catch bowl (1) moves down the pulling to shelter from transmission assembly (7) that subassembly (6) will heat dissipation window (5) block.

2. The short-circuit prevention structure for the dry type transformer according to claim 1, wherein: the shielding assembly (6) comprises a first shaft rod (61), two ends of the first shaft rod (61) are fixedly connected with the box body (2), a coil spring (62) is fixedly wound on the outer side of the first shaft rod (61), a piece of rain shielding cloth (63) is wound on the outer side of the coil spring (62), one end of the rain shielding cloth (63) is fixedly connected with the coil spring (62), the other end of the rain shielding cloth (63) is fixedly connected with a bonding block (64), and pull strips (65) are fixedly connected to two sides of the bonding block (64).

3. The short-circuit prevention structure for the dry type transformer according to claim 2, characterized in that: the transmission assembly (7) comprises a spring block (71), the spring block (71) is fixed on the outer wall of one side of the bottom of the supporting plate (3), the top end of the spring block (71) is fixedly connected with a tension spring (72), and one end of the tension spring (72) is fixedly connected with the inner wall of the top of the box body (2).

4. The short-circuit prevention structure for the dry type transformer according to claim 3, wherein: the heat dissipation device is characterized in that a first rack (73) is fixedly connected to the side wall of the spring block (71), a contraction groove (51) is formed in the upper portion of the heat dissipation window (5), a through groove (52) communicated with the inner side of the box body (2) is formed in one side of the contraction groove (51), a second shaft rod (74) is rotatably connected to the inner side of the through groove (52), a gear (75) is fixedly connected to the outer wall of the second shaft rod (74), and the gear (75) is meshed with the first rack (73).

5. The short-circuit prevention structure for the dry type transformer according to claim 4, wherein: the inner side of the contraction groove (51) is connected with a limiting sliding block (77) in a sliding mode, the top end of the limiting sliding block (77) is fixedly connected with a second rack (76), and the second rack (76) is meshed with the gear (75).

6. The short-circuit prevention structure for the dry type transformer according to claim 5, wherein: one end of the brace (65) is fixedly connected with the bottom surface of the limiting slide block (77).

7. The short-circuit prevention structure for the dry type transformer according to claim 1, wherein: the side wall of the water collecting tank (1) is provided with a drain hole (4).