A drain valve protection structure for oil-immersed transformer

Abstract

The utility model discloses an oil drain valve protection structure for oil-immersed transformer, including oil-immersed transformer box body, outlet pipe, oil drain pipe, the outlet pipe is located oil-immersed transformer box body bottom, is equipped with the oil drain valve between the outlet pipe and oil drain pipe, and the oil drain valve periphery is equipped with the oil drain valve cover through the bolt fixed, and the oil drain valve cover covers the protection of oil drain valve main part for the protection of oil drain valve main part. The utility model discloses novel structure, can effectively prevent the personnel who has not been authorized to open the oil drain valve through the setting protection cover, further avoids transformer oil waste, guarantees equipment safety.

Description

Technical Field

[0001] This utility model relates to the field of oil-immersed transformer manufacturing, and in particular to a drain valve protection structure for oil-immersed transformers. Background Technology

[0002] In traditional structures, the oil drain valves of oil-immersed transformers are often directly exposed to the external environment without dedicated protective devices. The lack of protective design makes it possible for unauthorized personnel to accidentally open the oil drain valve, or for the valve to be damaged by external impacts. This not only leads to the waste of transformer oil, but may also cause equipment shutdowns and safety accidents. Utility Model Content

[0003] The purpose of this invention is to provide a protective structure for an oil drain valve of an oil-immersed transformer that is easy to disassemble and has protective capabilities.

[0004] The purpose of this utility model is achieved as follows: an oil drain valve protection structure for an oil-immersed transformer includes an oil-immersed transformer housing, an outlet pipe, and an oil drain pipe. The outlet pipe is located at the bottom of the oil-immersed transformer housing. An oil drain valve is provided between the outlet pipe and the oil drain pipe. An oil drain valve cover is fixed around the oil drain valve by bolts. The oil drain valve cover covers the oil drain valve body for protection of the oil drain valve body.

[0005] Preferably, the outlet pipe is provided with an inner connecting plate, the oil drain pipe is provided with an outer connecting plate, and the oil drain valve is provided with connecting seats on both sides and is connected and fixed to the inner connecting plate and the outer connecting plate respectively by bolts.

[0006] Preferably, the outer docking plate extends outward to form a docking platform, and the docking platform is provided with a hollow protruding column, the hollow protruding column having internal threads.

[0007] Preferably, the drain valve cover is a rectangular shell shape, the drain valve cover has no inner back plate and left side plate, and the outer side panel of the drain valve cover has a groove on the left side facing inward, the size of the groove being larger than the diameter of the drain pipe.

[0008] Preferably, the drain valve cover is provided with a docking cylinder, the docking cylinder is provided with a limiting step, the limiting step is provided with a through hole, and the through hole is adapted to be connected with the hollow protruding column.

[0009] Preferably, the height of the hollow protrusion is less than the height of the through hole.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] 1. The drain valve cover can completely cover the drain valve body, preventing unauthorized personnel from accidentally opening the drain valve, preventing the risk of transformer oil leakage, and ensuring the safe operation of the equipment.

[0012] 2. During installation, only three steps are required: horizontal connection of the slot to the oil drain pipe, vertical connection of the through hole to the hollow protruding column, and single bolt fixing. During disassembly, the cover can be removed by unscrewing the bolt. No complicated tools are required, which greatly improves maintenance efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the hollow protruding column of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the drain valve cover of this utility model.

[0016] Among them, 1 is the oil-immersed transformer box body, 2 is the outlet pipe, 201 is the inner docking plate, 3 is the oil drain pipe, 301 is the outer docking plate, 3011 is the docking platform, 4 is the oil drain valve, 401 is the docking seat, 5 is the oil drain valve cover, 501 is the slot, 6 is the hollow protruding column, 7 is the docking cylinder, 701 is the limiting step, and 7011 is the through hole. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0018] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1-3 As shown, an oil drain valve protection structure for an oil-immersed transformer includes an oil-immersed transformer housing 1, an outlet pipe 2, and an oil drain pipe 3. The outlet pipe 2 is located at the bottom of the oil-immersed transformer housing 1. An oil drain valve 4 is provided between the outlet pipe 2 and the oil drain pipe 3. An oil drain valve cover 5 is fixed around the oil drain valve 4 by bolts. The oil drain valve cover 5 covers the oil drain valve body for protection.

[0021] like Figure 1-2 As shown, an inner connecting plate 201 is provided at the outlet pipe 2, an outer connecting plate 301 is provided at the oil drain pipe 3, and connecting seats 401 are provided on both sides of the oil drain valve 4 and are connected and fixed to the inner connecting plate 201 and the outer connecting plate 301 respectively by bolts. The main body of the oil drain valve is detachable for easy maintenance and replacement.

[0022] like Figure 1-2 As shown, the outer docking plate 301 extends outward to form a docking platform 3011. The docking platform 3011 is provided with a hollow protruding column 6. The hollow protruding column 6 has internal threads, which are used for connection with bolts.

[0023] like Figure 1-3 As shown, the drain valve cover 5 is a rectangular shell shape. The drain valve cover 5 has no inner back plate and left side plate. The outer side panel of the drain valve cover 5 has a groove 501 on the left side. The size of the groove 501 is larger than the diameter of the drain pipe 3. When connecting, first connect the groove with the drain pipe laterally so that the drain pipe falls into the groove. Then connect the protruding post with the connecting cylinder longitudinally. Finally, it can be fixed by bolts.

[0024] like Figure 1-2 As shown, the drain valve cover 5 is provided with a docking cylinder 7, and a limiting step 701 is provided inside the docking cylinder 7. A through hole 7011 is provided inside the limiting step 701. The through hole 7011 is adapted to be connected with the hollow protruding column 6. Only one bolt is needed for limiting, and the main body of the drain valve cover can be pressed and fixed. Furthermore, an axial limiting strip can be set on the outer periphery of the hollow protruding column, and a limiting groove is set on the inner diameter surface of the through hole to cooperate with the limiting strip, which can prevent the main body of the drain valve cover from rotating during the cooperation.

[0025] like Figure 1-2As shown, the height of the hollow protruding column 6 is less than the height of the through hole 7011. After the through hole 7011 and the hollow protruding column 6 are properly matched and connected, it is ensured that the fixing cap of the bolt can abut against the limiting step of the oil drain cover.

[0026] The working principle of this utility model is explained as follows: When installing the drain valve cover, firstly, its slot is horizontally aligned with the drain pipe so that the drain pipe falls into the slot; then, the through hole of the docking cylinder is vertically aligned with the hollow protruding column on the docking platform, and the bolt is threaded through the through hole and connected to the hollow protruding column. The limit step is used to abut against the bolt fixing cap to fix the drain valve cover, thus protecting the drain valve and preventing external personnel from directly opening the drain valve.

[0027] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A protective structure for an oil drain valve in an oil-immersed transformer, characterized in that, It includes an oil-immersed transformer housing, an outlet pipe, and an oil drain pipe. The outlet pipe is located at the bottom of the oil-immersed transformer housing. An oil drain valve is provided between the outlet pipe and the oil drain pipe. An oil drain valve cover is fixed around the oil drain valve by bolts. The oil drain valve cover covers the oil drain valve body for protection.

2. The protection structure for an oil drain valve of an oil-immersed transformer according to claim 1, characterized in that, The outlet pipe is provided with an inner connecting plate, the oil drain pipe is provided with an outer connecting plate, and the oil drain valve is provided with connecting seats on both sides and is connected and fixed to the inner connecting plate and the outer connecting plate respectively by bolts.

3. The oil drain valve protection structure for an oil-immersed transformer according to claim 2, characterized in that, The outer docking plate extends outward to form a docking platform, and the docking platform is provided with hollow protruding columns, the hollow protruding columns having internal threads.

4. The protection structure for an oil drain valve of an oil-immersed transformer according to claim 1, characterized in that, The drain valve cover is a rectangular shell shape. The drain valve cover has no inner back plate and no left side plate. The outer side panel of the drain valve cover has a groove on the left side facing inward. The size of the groove is larger than the diameter of the drain pipe.

5. The protection structure for an oil drain valve of an oil-immersed transformer according to claim 1, characterized in that, The drain valve cover is provided with a docking cylinder, the docking cylinder is provided with a limiting step, the limiting step is provided with a through hole, and the through hole is adapted to be connected with the hollow protruding column.

6. The oil drain valve protection structure for an oil-immersed transformer according to claim 1, characterized in that, The height of the hollow protruding column is less than the height of the through hole.

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