Positioning device for power transformer body

Abstract

According to the positioning device for the body of the power transformer, the body is arranged in a transformer shell of the power transformer, a plurality of positioning plates are vertically arranged at the bottom of the inner side of the transformer shell, each positioning plate is in the shape of a vertical plane plate, and the positioning plates face the body oppositely; the outer sides of the positioning plates are fixedly connected with the bottom face of the inner side of the transformer shell through rib plates, filling gaps are formed between the positioning plates and the transformer body, a laminated wood supporting plate is arranged between the filling gaps, a transformer body side frame is arranged at the upper end of the laminated wood supporting plate in a downward pressing mode, and a transformer body bottom frame is arranged at the lower end of the laminated wood supporting plate in a supporting pad mode. The laminated wood supporting plate is a multi-layer wood plate which is made of the same material and has the same thickness, through summarization and improvement, a novel device body lower positioning structure is adopted for a power transformer of a barrel type oil tank, the stability of a large transformer body in the transportation process is greatly improved, displacement or inclination of the transformer body is effectively prevented, and the service life of the transformer body is prolonged. And meanwhile, the insulation reliability between the clamping piece and the oil tank is also improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power transformer body, and particularly relates to a positioning device for power transformer body. BACKGROUND

[0002] The body of the transformer is the winding and the core, and the oil-immersed transformer is produced separately from the body and the oil tank shell, and the body and the oil tank shell need to be transported to the site for assembly. When the body and the oil tank shell are assembled, the body is usually hoisted and placed into the oil tank shell. During the process, there is no structure for positioning the body, which leads to the body being easily impacted with the oil tank shell when the body is placed into the oil tank shell. The impact will cause damage to the body or the oil tank shell, and manual fine adjustment of the body is also required when installing the bolts, which greatly affects the installation speed.

[0003] Therefore, the body can be stably installed in the transformer before leaving the factory, which greatly reduces the complexity of transportation and assembly, and therefore a body positioning structure for an oil-immersed transformer is needed. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the present application provides a positioning device for power transformer body. The inside of the transformer shell of the power transformer is provided with a body. The inside bottom of the transformer shell is vertically and perpendicularly provided with a plurality of positioning plates. The shape of the positioning plate is a vertical and perpendicular plane plate. The positioning plates are all relatively oriented towards the body. The outside of the positioning plate is fixedly connected with the inside bottom surface of the transformer shell through a web plate. A filling gap is provided between the positioning plate and the body. A laminated wood support plate is provided between the filling gaps. The upper end of the laminated wood support plate is provided with a body side frame in a downward pressing manner. The lower end of the laminated wood support plate is provided with a body bottom frame in a supporting pad manner. The laminated wood support plate is a plurality of wood plates with the same material and thickness. Through summarization and improvement, a new body lower positioning structure is adopted for the barrel type oil tank of the power transformer, which greatly improves the stability of the large transformer body during transportation, effectively prevents displacement or inclination of the transformer body, and improves the insulation reliability between the clamp and the oil tank.

[0005] The shape of the transformer shell is a rectangular hollow shell. The inside dimension of the transformer shell is greater than the outer contour dimension of the body. A plurality of positioning plates are provided around the bottom surface of the transformer shell. The bottom surface of the transformer shell is integrally welded and fixedly connected with the positioning plates through a web plate. The positioning plates are directly arranged on the inside bottom of the transformer shell, so that the body has enough space and range for installation.

[0006] The body is a transformer body composed of a winding and a core, the outer side of the bottom of the body is provided with a body side frame in a surrounding manner, the bottom surface of the body is provided with a body bottom frame in a protruding manner towards the surroundings, the outer contour of the body side frame and the body bottom frame is the same, the distance between the bottom surface of the body side frame and the top surface of the body bottom frame is the same as the height of the laminated wood support plate, by additionally providing the protruding body side frame and the body bottom plate on the outer side of the body, not only the stability of the body placed inside the transformer shell can be improved, but also the laminated wood support plate has an embedded placement area, and the laminated wood support plate can be fully filled between the body side frame and the body bottom plate.

[0007] The positioning plate is a rectangular plate, a plurality of positioning plates are provided on the outer side of the body in an equidistant contour manner, a rib plate is welded on the rear side of each positioning plate, the vertical positioning plate is parallel to the adjacent surface of the body, by the plurality of positioning plates, the bottom surface of the inside of the hollow transformer shell is divided into an area capable of preventing the body, and the rear side is further strengthened by the rib plate to ensure the strength of the positioning plate.

[0008] The laminated wood support plate is composed of a plurality of rectangular wood plates laminated and connected, the outer surface of the laminated wood support plate is tightly pressed and connected with the inner surface of the positioning plate, the inner surface of the laminated wood support plate is connected with the outer surface of the body in an extruded manner, the upper end of the laminated wood support plate is connected with the bottom surface of the body side frame in a top pressing manner, and the lower end of the laminated wood support plate is connected with the outer edge top surface of the body bottom frame in a downward pressing manner, the laminated wood support plate is installed in an extruded manner, thereby realizing high-strength body positioning and installation, and the wood plate itself has a certain elasticity, thereby being capable of having a certain shock absorption effect while ensuring the strength and preventing the connection from being broken due to long-time vibration.

[0009] Advantages:

[0010] By summarizing and improving, the new body lower positioning structure is adopted for the power transformer of the barrel type oil tank, the stability of the large transformer body during transportation is greatly improved, the displacement or inclination of the transformer body is effectively prevented, and the insulation reliability between the clamp and the oil tank is also improved.

[0011] The purpose is to improve the positioning structure below the body of the 35kV level and above power transformer, ensure the stability and reliability of the transformer body during transportation, prevent displacement or inclination, and improve the insulation reliability between the clamp and the oil tank.

[0012] It is convenient for production and installation, can effectively solve the displacement or inclination of the transformer body during transportation, and protect the insulation reliability between the clamp and the oil tank.

[0013] The high-strength body positioning installation is realized by the extrusion type installation of the laminated wood supporting plate, the wood plate has elasticity, the strength is ensured, the damping effect is achieved, and the connection is prevented from being broken due to long-time vibration. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an internal side view of a positioning device for a power transformer body;

[0015] Figure 2 It is an internal front view of a positioning device for a power transformer body;

[0016] In the figure: 1, transformer shell, 2, body, 3, body side frame, 4, body bottom frame, 5, positioning plate, 6, laminated wood supporting plate. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the utility model, the utility model will be further described in combination with examples and drawings below, and the examples are only used to explain the utility model and do not constitute the limitation on the protection scope of the utility model.

[0018] Transformer shell 1, body 2, body side frame 3, body bottom frame 4, positioning plate 5, laminated wood supporting plate 6.

[0019] As shown in Figure 1 , 2 ;

[0020] A positioning device for a power transformer body 2 is disclosed. The transformer body 2 is located inside the transformer casing 1. Several positioning plates 5 are vertically arranged on the bottom inner side of the transformer casing 1. Each positioning plate 5 is a vertically oriented planar plate, facing the transformer body 2. The outer sides of each positioning plate 5 are fixedly connected to the bottom inner side of the transformer casing 1 via reinforcing ribs. A filling gap is provided between the positioning plates 5 and the transformer body 2. A laminated wooden support plate 6 is provided between the filling gap. A transformer body side frame 3 is pressed down at the upper end of the laminated wooden support plate 6, and a transformer body base frame 4 is supported at the lower end of the laminated wooden support plate 6. The laminated wooden support plate 6 is made of multiple layers of wood of the same material and thickness. The transformer casing 1 is a rectangular hollow casing, with its internal dimensions larger than the outer contour dimensions of the transformer body 2. Several positioning plates 5 are arranged around the bottom surface of the transformer casing. The bottom surface of the transformer casing is integrally welded and fixedly connected to the positioning plates 5 via reinforcing ribs. The transformer body 2 consists of windings and a core. A side frame 3 is arranged around the bottom outer side of the body 2, and a base frame 4 protrudes from the bottom surface of the body 2 in all directions. The side frame 3 and the base frame 4 have the same outer contour shape. The distance between the bottom surface of the side frame 3 and the top surface of the base frame 4 is the same as the height of the laminated wooden support plate 6. The positioning plates 5 are rectangular plates, and several positioning plates 5 are equidistantly arranged on the outer side of the body 2 in a contour pattern. The rear sides of the positioning plates 5 are welded... The device is equipped with stiffening plates. The positioning plate 5 is vertically parallel to the adjacent surface of the body 2. The laminated wood support plate 6 is composed of several rectangular wood boards laminated together. The outer surface of the laminated wood support plate 6 is pressed and squeezed together with the inner surface of the positioning plate 5. The inner surface of the laminated wood support plate 6 is squeezed and connected to the outer surface of the body 2. The upper end of the laminated wood support plate 6 is pressed and connected to the bottom surface of the side frame 3 of the body. The lower end of the laminated wood support plate 6 is pressed down and connected to the top surface of the outer edge of the base frame 4 of the body.

[0021] Implementation example;

[0022] In use, the device body 2 is hoisted from top to bottom onto the upper part of the inner side of the positioning plate 5 using a crane. Then, the laminated wood support plates 6 are installed layer by layer. The laminated wood support plates 6 are installed between the side frame 3 of the device body and the bottom plate of the device body 2. After filling, the device body 2 is moved downward so that the positioning plate 5 presses against the laminated wood support plates 6. It is observed whether there are any gaps that can be filled with the laminated wood support plates 6. If they can be filled, a laminated wood support plate 6 of half the size is added last to ensure the strength of the device body 2 during installation. Finally, the device body 2 is completely placed inside.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for a power transformer tank, the inside of a transformer housing of a power transformer being provided with a tank, characterized in that, The inner bottom of the transformer shell is vertically provided with a plurality of positioning plates, the positioning plates are vertically flat plates, the positioning plates are oppositely directed to the body, the outer sides of the positioning plates are fixedly connected with the inner bottom of the transformer shell through the webs, the filling gaps are provided between the positioning plates and the body, the laminated wood support plates are provided between the filling gaps, the upper ends of the laminated wood support plates are downwardly provided with the body side frames, the lower ends of the laminated wood support plates are upwardly provided with the body bottom frames, and the laminated wood support plates are multi-layer wood plates with same material and thickness.

2. A positioning device for a power transformer tank according to claim 1, characterized in that The transformer shell is a rectangular hollow shell, the internal dimension of the transformer shell is greater than the external contour dimension of the body, the bottom of the transformer shell is provided with a plurality of positioning plates, and the bottom of the transformer shell is integrally welded and fixedly connected with the positioning plates through the webs.

3. A positioning device for a power transformer tank according to claim 1, characterized in that The body is a transformer body composed of a winding and an iron core, the outer side of the bottom of the body is circumferentially provided with a body side frame, the bottom of the body is circumferentially provided with a body bottom frame, the external contour shape of the body side frame is same as that of the body bottom frame, the distance between the bottom of the body side frame and the top of the body bottom frame is same as the height of the laminated wood support plate.

4. A positioning device for a power transformer tank according to claim 1, characterized in that The positioning plates are rectangular plates, a plurality of the positioning plates are equidistantly provided on the outer side of the body in the form of contour, the rear sides of the positioning plates are all welded with the webs, and the positioning plates are vertically parallel to the adjacent surfaces of the body.

5. A positioning device for a power transformer tank according to claim 1, characterized in that, The laminated wood support plates are a plurality of rectangular wood plates laminated and combined, the outer side surfaces of the laminated wood support plates are tightly pressed and connected with the inner side surfaces of the positioning plates, the inner side surfaces of the laminated wood support plates are extruded and connected with the outer surfaces of the body, the upper ends of the laminated wood support plates are upwardly connected with the bottoms of the body side frames, and the lower ends of the laminated wood support plates are downwardly connected with the outer edge top surfaces of the body bottom frames.

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