A full-conductor coil horizontal epoxy casting structure

Abstract

The application discloses a full-conductor coil horizontal epoxy pouring structure, which comprises an outer mold, an inner mold, a panel and an end plate, the outer mold comprises two half-elliptical mold plates, the longer side of the outer mold is provided with a panel opening, the panel is arranged at the panel opening, the inner side of the inner mold is provided with an inner mold support plate, a plurality of air channel fixing plates and built-in air channel square pipes are arranged at the interval between the inner mold and the outer mold, each air channel fixing plate and the built-in air channel square pipe are adjacently arranged, and the end plate is provided with two end plates which are arranged at the two ends of the outer mold respectively. The two half-elliptical mold plates are adopted to form the outer mold, the whole processing and production can be carried out, and the production cycle of the product is greatly shortened. The high-voltage coil is poured horizontally on the premise that the outer dimension is increased, the vertical pouring is changed into the horizontal pouring, the original equipment is maximized, and the utilization rate of the pouring equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical equipment, in particular to a full-conductor coil horizontal epoxy pouring structure. BACKGROUND

[0002] With the continuous increase of urban power load, the regional transformer substation of city network is more and more deeply into the load center of city center, residential area, large and medium-sized factory and mine, and the large-capacity regional power supply dry-type transformer is widely used. The size (outer diameter and height) of the transformer coil also increases with the increase of capacity, and the existing pouring equipment height cannot meet the vertical pouring requirements of the coil. Therefore, a new type of large-capacity full-conductor coil horizontal epoxy pouring structure is urgently needed to meet the demand. SUMMARY

[0003] The purpose of the present application is to solve the above problems of the prior art, and a full-conductor coil horizontal epoxy pouring structure is provided, which comprises an outer mold, an inner mold, a panel and an end plate, the outer mold comprises two half-elliptical mold plates, one side of the outer mold is provided with a V-shaped pouring port, and the other side is provided with a panel opening, the panel is arranged at the panel opening, the inner side of the inner mold is provided with an inner mold support plate, and a plurality of air channel fixing plates and built-in air channel square pipes are arranged at the interval between the inner mold and the outer mold, each air channel fixing plate and built-in air channel square pipe are arranged adjacent to each other, and the end plate has two and is arranged at both ends of the outer mold.

[0004] Further, in the high-voltage coil pouring forming state, the built-in air channel square pipe and the air channel fixing plate are left in the poured high-voltage coil.

[0005] Further, the built-in air channel square pipe and the air channel fixing plate are made of glass fiber material.

[0006] Further, the outer wall of the built-in air channel square pipe is provided with a plurality of grooves, and the grooves are filled with glass mesh.

[0007] Further, the wall thickness of the built-in air channel square pipe is greater than or equal to 1mm.

[0008] Further, in the high-voltage coil pouring forming state, the grooves are filled with epoxy resin.

[0009] Further, the outer wall of the air channel fixing plate is provided with a plurality of fixing plate grooves, and the fixing plate grooves are filled with second glass mesh.

[0010] Further, the cross section of the inner mold is in the shape of a runway.

[0011] Further, the overall cross section of the outer mold is in the shape of a horseshoe.

[0012] Further, the panel is provided with a sliding slot on the side close to the center of the outer mold.

[0013] Beneficial effects: In the present application, two long semicircular templates are used to form the outer mold, which can be used for complete processing and production, greatly shortening the production cycle of the product; the detachable panel combined with the outer mold is also more convenient for transportation and assembly. The air channel fixing plate and the built-in air channel square pipe provide reinforcement and fixing effect, improve the structural strength of the air channel and the stability of pouring. By providing the built-in air channel square pipe, the step of pulling out the air channel support bar in the traditional pouring process is cancelled, simplifying the process and improving the production efficiency. Under the premise of increasing the size of the high-voltage coil, the vertical pouring is changed to horizontal pouring, which further maximizes the application of the original equipment and improves the utilization rate of the pouring equipment. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a three-dimensional schematic diagram of a horizontal epoxy pouring structure of a full-conductor coil in the embodiment Figure 1 ;

[0015] Figure 2 is a three-dimensional schematic diagram of a horizontal epoxy pouring structure of a full-conductor coil in the embodiment Figure 2 ;

[0016] Figure 3 is a top view of an outer mold in the embodiment;

[0017] Figure 4 is a front view of a panel in the embodiment;

[0018] Figure 5 is a top view of a panel in the embodiment;

[0019] Figure 6 is a top view of an end plate in the embodiment;

[0020] Figure 7 is a top view of an inner mold in the embodiment;

[0021] Figure 8 is a top view of an inner mold support plate in the embodiment;

[0022] Figure 9 is a top view of a high-voltage coil in the embodiment;

[0023] Figure 10 is Figure 9 a partial enlarged view of part I in ;

[0024] Figure 11 is an axial cross-sectional schematic diagram of a built-in air channel square pipe in the embodiment.

[0025] Figure 12is an axial schematic view of an air channel fixing plate in the embodiment.

[0026] Figure: 1, end plate, 2, outer mold, 3, panel, 4, inner mold, 5, inner mold support plate, 6, built-in air channel square tube, 7, air channel fixing plate, 8, sliding clamping groove, 9 first glass mesh, 10, second glass mesh. DETAILED DESCRIPTION

[0027] In order to deepen the understanding of the present application, the present application will be further described below in combination with examples and drawings, which are only used to explain the present application and do not constitute a limitation on the protection scope of the present application.

[0028] As Figures 1-11 shown, a full-conductor coil horizontal epoxy pouring structure, comprising an outer mold 2, an inner mold 4, a panel 3 and an end plate 1, the outer mold 2 comprises two half long circular mold plates, the outer mold 2 is in the shape of a whole section, one side of the outer mold 2 is provided with a V-shaped pouring port, and the other side is provided with a panel opening, the panel 3 is arranged at the panel opening, the inner mold 4 is in the shape of a runway section, the inner side of the inner mold 4 is provided with an inner mold support plate 5, and a plurality of air channel fixing plates 7 and built-in air channel square tubes 6 are arranged at the interval between the inner mold 4 and the outer mold 2, each air channel fixing plate 7 and the built-in air channel square tube 6 are arranged adjacent to each other, and the end plate 1 has two and is arranged at both ends of the outer mold 2.

[0029] As Figure 9 , Figure 10 shown, in the embodiment, the built-in air channel square tube 6 is left in the pouring and forming high-voltage coil; the built-in air channel square tube 6 and the air channel fixing plate 7 are made of glass fiber material; as Figure 11 shown, a plurality of grooves are arranged on the outer wall of the built-in air channel square tube 6, and the grooves are filled with glass mesh 9; the wall thickness of the built-in air channel square tube 6 is greater than or equal to 1mm; the air channel fixing plate 7 is arranged in a staggered manner in the axial direction, and a plurality of air channel fixing plate grooves are uniformly arranged; the air channel fixing plate groove is filled with second glass mesh 10; the upper and lower ends of the air channel fixing plate 7 are shorter than the upper and lower ends of the air channel square tube 6 by 30mm; in the pouring and forming state of the high-voltage coil, the grooves are filled with epoxy resin.

[0030] Please refer to Figure 9 , based on the above embodiment, the built-in air channel square tube 6 does not pull out after the high-voltage coil is cured and formed, which reduces the traditional process of pulling out the air channel after the high-voltage coil is cured and formed, and improves the production efficiency. The air channel square tube and the air channel fixing plate are intermittently filled with a certain amount of epoxy resin between the surface layers, and are formed by secondary curing, which improves the mechanical strength of the single-formed air channel square tube.

[0031] The air duct square tube made of glass fiber material is a H-grade insulation part, and has high heat resistance level.

[0032] After the coil is wound and placed in the built-in air duct square tube and the air duct fixing plate, drying and pouring are performed, the epoxy resin penetrates into the air duct groove filled with the glass mesh cloth for secondary curing and forming, the thermal expansion coefficients of the built-in air duct square tube and the air duct fixing plate are ensured to be close to the epoxy resin, the internal stress caused by the different expansion coefficients of the materials is reduced, the mechanical strength of the single-formed built-in air duct square tube and the air duct fixing plate is improved, and especially the pressure bearing capacity of the built-in air duct square tube is greatly improved.

[0033] In the embodiment, the panel 3 is provided with a sliding clamping groove 8 on the side close to the center of the outer mold 2. The structure of the sliding clamping groove 8 facilitates the disassembly and assembly of the panel and the outer mold.

[0034] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A full wire coil horizontal epoxy cast construction, characterized by, It comprises an outer mold, an inner mold, a panel and an end plate, the outer mold comprises two half long circular mold plates, one side of the outer mold is provided with a V-shaped pouring gate, the other side is provided with a panel opening, the panel is arranged at the panel opening, the inner side of the inner mold is provided with an inner mold support plate, a plurality of air channel fixing plates and built-in air channel square tubes are arranged at the interval between the inner mold and the outer mold, each air channel fixing plate is arranged adjacent to the built-in air channel square tube, the end plate is two and is arranged at the two ends of the outer mold respectively; In the high-pressure coil pouring forming state, the built-in air channel square tube and the air channel fixing plate are left in the high-pressure coil pouring forming state; The outer wall of the built-in air channel square tube is provided with a plurality of air channel square tube grooves, and the air channel square tube grooves are filled with first glass mesh; The outer wall of the air channel fixing plate is provided with a plurality of fixing plate grooves, and the fixing plate grooves are filled with second glass mesh.

2. A full wire coil horizontal epoxy cast construction according to claim 1, characterized in that, The built-in air channel square tube and the air channel fixing plate are both made of glass fiber material.

3. A full wire coil horizontal epoxy cast construction according to claim 1, characterized in that, The wall thickness of the built-in air channel square tube is greater than or equal to 1mm.

4. A full wire coil horizontal epoxy cast construction according to claim 1, wherein, In the high-pressure coil pouring forming state, the grooves are filled with epoxy resin.

5. A full wire coil horizontal epoxy cast construction as claimed in claim 1, wherein, The inner mold is in the shape of a runway in cross section.

6. A full wire coil horizontal epoxy cast construction according to claim 1, wherein, The outer mold is in the shape of a horseshoe in overall cross section.

7. A full wire coil horizontal epoxy potted construction as claimed in claim 1, wherein, The panel is provided with a sliding clamping groove on the side close to the center of the outer mold.

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