Oil-immersed transformer oil outlet protection device and transformer

Abstract

The utility model provides an oil-immersed transformer oil outlet protection device and a transformer, and relates to the technical field of transformer protection, the oil-immersed transformer oil outlet protection device comprises a baffle plate, a limiting plate, a protection cover and a lock catch assembly, the baffle plate and the limiting plate are used for being connected to the transformer and arranged on two sides of an oil outlet of the transformer, and the outer end of the baffle plate is provided with a connecting plate; a first connecting hole is formed in the connecting plate, the cross section of the protective cover is of a U-shaped structure, a limiting base is arranged at the end, facing the limiting plate, of the protective cover, a limiting groove is formed in the limiting base, a limiting piece used for being inserted into the limiting groove is connected to the limiting plate, and a second connecting hole is formed in the position, corresponding to the first connecting hole, of the protective cover. The first connecting hole and the second connecting hole are connected through the lock catch assembly, the oil outlet of the transformer is protected by arranging the baffle, the limiting plate, the lock catch assembly and the protective cover, and the protective device is simple in structure, low in cost and convenient to install and use.

Description

Technical Field

[0001] This utility model relates to the field of transformer protection technology, and in particular to a protective device for the oil outlet of an oil-immersed transformer and the transformer itself. Background Technology

[0002] Transformer enclosures typically use cooling oil for internal heat conduction, heat dissipation, and insulation. To facilitate oil replacement, an oil outlet is usually located at the bottom of the transformer enclosure, and a valve or plug is installed to seal the outlet. To prevent accidental opening of the valve or plug and to prevent oil theft from the transformer enclosure, a protective device is usually required at the oil outlet. However, since the oil outlet is located at the bottom of the transformer enclosure, existing protective devices are inconvenient to use. This application addresses these shortcomings. Utility Model Content

[0003] The purpose of this utility model is to provide a protective device for the oil outlet of an oil-immersed transformer, which is used to protect the oil outlet of the transformer. It has a simple structure and is easy to use, solving the problem of inconvenience in the use of current protective devices.

[0004] To address the aforementioned problems, this utility model provides a protective device for the oil outlet of an oil-immersed transformer, installed on the transformer tank wall. It includes a baffle, a limiting plate, a locking assembly, and a protective cover. The baffle and limiting plate are fixed to both sides of the oil outlet on the tank wall. The outer end of the baffle is bent and extended to form a connecting plate, and the connecting plate has a first connecting hole. The protective cover has a U-shaped cross-section, and a limiting seat is provided at one end of the protective cover facing the limiting plate. The limiting seat has a limiting groove. The outer end of the limiting plate is bent towards one side of the baffle to form a limiting piece that inserts into the limiting groove. A second connecting hole is provided on the protective cover corresponding to the first connecting hole. The first and second connecting holes are connected by a locking assembly, wherein the locking assembly can be a padlock or other lock.

[0005] According to one embodiment of the present invention, the inner end of the baffle is provided with a bottom plate, the bottom plate is welded to the box wall, the baffle is perpendicular to the bottom plate, and the connecting plate is distributed parallel to the bottom plate; the inner end of the limiting plate is bent to form a connecting seat, the connecting seat is welded to the box wall, and the bottom plate and the connecting seat both serve to increase the connection area and improve the connection stability.

[0006] According to one embodiment of this utility model, the edge of the base plate is bent outward to form a straight guide flange; when the inner wall of the opening end of the protective cover abuts against the guide flange and moves along the guide flange until the limiting piece is inserted into the limiting groove, the first connecting hole and the second connecting hole are coaxially distributed. The guide flange increases the structural strength of the base plate on the one hand, preventing the base plate from collapsing; on the other hand, it guides the protective cover, making the installation of the protective cover convenient.

[0007] According to one embodiment of the present invention, the protective cover has a trapezoidal cross-section, and the width of the opening end of the protective cover is greater than the width of the bottom surface. The trapezoidal structure of the protective cover has a large opening width, making it easier to insert the baffle.

[0008] According to one embodiment of this utility model, the baffle is configured as a right-angled trapezoid, the guide flange is located on one side of the right-angled side of the baffle, and the hypotenuse of the baffle is parallel to the corresponding side of the protective cover. In use, the protective cover is first moved along the hypotenuse of the baffle until it contacts the box wall, then the other side of the protective cover is moved until it fits against the guide flange, and finally the protective cover is moved along the guide flange until it contacts the limiting plate. These three actions quickly and accurately achieve the installation of the protective cover.

[0009] A transformer, wherein the oil outlet of the transformer is equipped with the aforementioned oil outlet protection device.

[0010] The beneficial effects of this utility model are that by setting up a baffle, a limiting plate, a locking assembly, and a protective cover, when in use, the protective cover is first fastened onto the baffle, and then one end of the upper limit seat of the protective cover is brought closer to the limiting plate until the limiting piece is inserted into the limiting groove. Then, the first connecting hole and the second connecting hole are locked together by the locking assembly, thereby protecting the transformer oil outlet and preventing the oil outlet valve or oil plug from being accidentally opened and the oil in the transformer tank from being stolen. This protective device has a simple structure, low cost, and is convenient to install and use. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0013] Figure 2 for Figure 1 Another perspective view.

[0014] Figure 3 for Figure 1 The front view.

[0015] Figure 4 for Figure 3 Sectional view at point AA.

[0016] Figure 5 for Figure 1 Exploded view.

[0017] Figure 6 for Figure 5 Another perspective of the exploded view.

[0018] Figure 7 for Figure 3Sectional view at point BB. Detailed Implementation

[0019] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0020] An oil outlet protection device for an oil-immersed transformer, such as Figures 1-7 The transformer oil outlet protection device shown is installed on the transformer tank wall 1 and includes a baffle 10, a limiting plate 20 and a protective cover 30.

[0021] Baffle 10 and limiting plate 20 are fixed on both sides of oil outlet 2 on tank wall 1. The outer end of baffle 10 is bent and extended to form connecting plate 11. The connecting plate 11 is provided with a first connecting hole 110. The cross-section of protective cover 30 is U-shaped. One end of protective cover 30 facing limiting plate 20 is provided with limiting seat 31. Limiting seat 31 is provided with limiting groove 310. The outer end of limiting plate 20 is bent toward one side of baffle 10 to form limiting piece 200 inserted into limiting groove 310. The protective cover 30 is provided with a second connecting hole 300 corresponding to the first connecting hole 110. The first connecting hole 110 and the second connecting hole 300 are connected by a locking assembly 3. The locking assembly 3 is preferably a padlock.

[0022] The inner end of the baffle 10 is provided with a base plate 12, which is welded to the box wall 1. The baffle 10 is perpendicular to the base plate 12, and the connecting plate 11 is distributed parallel to the base plate 12. The inner end of the limiting plate 20 is bent to form a connecting seat 201, which is welded to the box wall 1.

[0023] The edge of the base plate 12 is bent outward to form a straight guide flange 120; when the inner wall of the opening end of the protective cover 30 abuts against the guide flange 120 and moves along the guide flange 120 until the limiting piece 200 is inserted into the limiting groove 310, the first connecting hole 110 and the second connecting hole 300 are coaxially distributed.

[0024] The length of the guide flange 120 is preferably set to extend from one side of the oil outlet 2 to the other side.

[0025] By integrating the base plate 12, baffle 10, and guide flange 120 into a single unit, the number of parts is greatly reduced, costs are lowered, and installation efficiency is improved.

[0026] The protective cover 30 has a trapezoidal cross-section, and the width of the opening end of the protective cover 30 (i.e. the end closer to the box wall 1) is greater than the width of the bottom surface (i.e. the end away from the box wall 1).

[0027] The baffle 10 is configured as a right-angled trapezoid, and when the protective cover 30 is installed, the inclined side of the baffle 10 can play a guiding role.

[0028] The guide flange 120 is located on the side of the right angle side 100 of the baffle 10, and the inclined side 101 of the baffle 10 is distributed parallel to the side of the protective cover 30.

[0029] Referring to the accompanying drawings, the principle of this utility model is as follows: Figure 1 Taking the direction as an example, when using it, first move the protective cover along the inclined side of the baffle (perpendicular to the tank wall) until it contacts the tank wall. Then move the upper side of the protective cover downwards until it fits against the guide flange. Finally, move the protective cover to the right along the guide flange until it contacts the limiting plate. At this time, the limiting plate is inserted into the limiting groove, and the first connecting hole and the second connecting hole are in a coaxial position. Finally, lock the first connecting hole and the second connecting hole with the locking assembly. The protective cover completely covers the oil outlet on the tank wall, making it difficult for the oil plug or valve at the oil outlet to be accidentally opened, and the cooling oil in the transformer is also difficult to be stolen. This kind of protective device can quickly install the protective cover in three steps. The overall structure is simple and very convenient to use.

[0030] A transformer, wherein the oil outlet of the transformer is equipped with the aforementioned oil outlet protection device.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. An oil outlet protection device for an oil-immersed transformer, characterized by: The device includes a baffle (10), a limiting plate (20), a protective cover (30), and a locking assembly (3). The baffle (10) and the limiting plate (20) are used to connect to the transformer and are set on both sides of the transformer's oil outlet. The outer end of the baffle (10) is provided with a connecting plate (11). The connecting plate (11) is provided with a first connecting hole (110). The protective cover (30) has a U-shaped cross-section. The protective cover (30) is provided with a limiting seat (31) at one end facing the limiting plate (20). The limiting seat (31) is provided with a limiting groove (310). The limiting plate (20) is connected with a limiting piece (200) for insertion into the limiting groove (310). The protective cover (30) is provided with a second connecting hole (300) corresponding to the first connecting hole (110). The first connecting hole (110) and the second connecting hole (300) are connected by the locking assembly (3).

2. The oil outlet protection device for an oil-immersed transformer according to claim 1, characterized in that: The inner end of the baffle (10) is provided with a base plate (12), which is used to weld and connect with the transformer box wall. The baffle (10) is perpendicular to the base plate (12), and the connecting plate (11) is distributed parallel to the base plate (12).

3. The oil outlet protection device for an oil-immersed transformer according to claim 1 or 2, characterized in that: The inner end of the limiting plate (20) is bent to form a connecting seat (201), which is used for welding connection with the transformer box wall.

4. The oil outlet protection device for an oil-immersed transformer according to claim 2, characterized in that: The oil outlet protection device for the oil-immersed transformer also includes a guide flange (120). When the inner wall of the opening end of the protective cover (30) abuts against the guide flange (120) and moves along the guide flange (120) until the limiting piece (200) is inserted into the limiting groove (310), the first connecting hole (110) and the second connecting hole (300) are coaxial.

5. The oil outlet protection device for an oil-immersed transformer according to claim 4, characterized in that: The guide flange (120) is formed by bending outward from the edge of the base plate (12).

6. The oil outlet protection device for an oil-immersed transformer according to claim 4 or 5, characterized in that: The protective cover (30) has a trapezoidal cross-section, and the width of the opening end of the protective cover (30) is greater than the width of the bottom surface.

7. The oil outlet protection device for an oil-immersed transformer according to claim 6, characterized in that: The baffle (10) is configured as a right trapezoid, and the guide flange (120) is located on the side of the right angle side (100) of the baffle (10). The hypotenuse (101) of the baffle (10) is distributed parallel to the side of the protective cover (30).

8. The oil outlet protection device for an oil-immersed transformer according to claim 5, characterized in that: The connecting plate (11) is formed by bending and extending the outer end of the baffle (10).

9. The oil outlet protection device for an oil-immersed transformer according to claim 3, characterized in that: The limiting piece (200) is formed by bending the outer end of the limiting plate (20) toward one side of the baffle (10).

10. A transformer, characterized in that: The oil outlet of the transformer is equipped with an oil outlet protection device as described in any one of claims 1-9.

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