Pouring mutual inductor with adjustable umbrella skirts

Abstract

The utility model relates to a pouring mutual inductor with an adjustable umbrella skirt, which is characterized in that a circle of annular groove is formed in the middle of a mutual inductor body in the circumferential direction of the mutual inductor body, a colored silica gel layer is coated in the annular groove, the thickness of the colored silica gel layer is smaller than the depth of the annular groove, and a circle of silicon rubber umbrella skirt sleeve is sleeved outside the colored silica gel layer. The silicone rubber umbrella skirt sleeve comprises a sleeve body part and an umbrella skirt structure part, the umbrella skirt structure part is integrally formed on the periphery of the sleeve body part, the sleeve body part is connected to the annular groove in a sleeving mode, and the thickness of the sleeve body part is not smaller than the depth of the reversing groove. The structure is simple, the stability of the umbrella skirt structure can be effectively considered, and multi-specification use requirements can be met through interchangeable and adjustable installation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mutual inductor, in particular to a pouring mutual inductor with adjustable umbrella skirt. BACKGROUND

[0002] The body of 35kV pouring mutual inductor is poured by a large amount of epoxy resin, which makes the resin prone to defects such as air bubbles and shrinkage during the curing process. Especially the umbrella skirt position of the mutual inductor, the thin-walled structure is prone to heat transfer to the mold, and small holes and other defects are prone to occur during the curing process, which is the main reason for product rejection. In addition, in the relevant national standards of mutual inductor, the pollution levels are different in different use areas, the creepage distance of the product is different, and the specifications required by the umbrella skirt are also different, which brings trouble to the design and production of the product and the production cost is high. SUMMARY

[0003] The utility model provides a simple structure, can effectively take into account the umbrella skirt structure stability, interchange adjustable installation satisfies the pouring mutual inductor of adjustable umbrella skirt of many specifications use requirement.

[0004] The technical scheme adopted by the utility model is: a pouring mutual inductor with adjustable umbrella skirt, comprising a mutual inductor body, characterized by: a circumferential annular groove is arranged in the middle of the mutual inductor body, a colored silicone layer is coated in the annular groove, the thickness of the colored silicone layer is less than the depth of the annular groove, a silicone rubber umbrella skirt sleeve is sleeved on the colored silicone layer, the silicone rubber umbrella skirt sleeve comprises a sleeve body part and an umbrella skirt structure part, the umbrella skirt structure part is integrally formed on the outer periphery of the sleeve body part, the sleeve body part is sleeved on the annular groove, and the thickness of the sleeve body part is not less than the depth of the reversing groove.

[0005] The color of the colored silicone layer is the same as or different from that of the silicone rubber umbrella skirt sleeve.

[0006] The insulation performance of the colored silicone layer is greater than that of the silicone rubber umbrella skirt sleeve.

[0007] The groove bottom of the annular groove is uniformly distributed with two or more convex columns in the circumferential direction, the height of the convex column is not higher than the annular groove, and the inner wall of the sleeve hole of the silicone rubber umbrella skirt sleeve is uniformly distributed with two or more concave holes corresponding to the convex columns in the axial direction.

[0008] The groove bottom of the annular groove is uniformly distributed with two or more concave holes in the circumferential direction, and the inner wall of the sleeve hole of the silicone rubber umbrella skirt sleeve is uniformly distributed with two or more convex columns corresponding to the concave holes in the axial direction.

[0009] The groove bottom of the annular groove is in the shape of a waist drum in the up-down direction.

[0010] The waist drum is not higher than the annular groove.

[0011] The utility model discloses a beneficial effect: in the mutual inductor body pouring, around the periphery and pours into annular groove, and the groove bottom is attached with color silica gel layer, and is equipped with the silicon rubber umbrella skirt cover of optional specification, and the comprehensive cementation and the set joint clamping ensure the stable installation, and can satisfy the production of different specifications, convenient for reducing production cost, and the color silica gel layer is pressed out after the silicon rubber umbrella skirt cover is tightly sleeved end face, improves the sealing performance of silicon rubber umbrella skirt cover, can directly check whether the cementation is complete and stable, has the confirmation whether the rubber coating connection operation is completed, and is convenient for production and quality inspection discernment, adopts the recess and the convex column structure cooperation, when the silicon rubber umbrella skirt cover is sleeved on annular groove, can effectively position the rotation or the deviation, influences the installation accuracy, improves the stability of set joint simultaneously, sets up the annular groove as the waist drum shape, can better with the silicon rubber umbrella skirt cover and is equipped with, improves the set joint effect.

[0012] The utility model discloses a structure for the mutual inductor body of batch production does not have the umbrella skirt structure, will not be scrapped because of umbrella skirt defect, greatly improves product pass rate and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is structure schematic drawing for the utility model structure;

[0014] Figure 2 It is structure schematic drawing for the utility model mutual inductor body embodiment one;

[0015] Figure 3 It is structure schematic drawing for the silicon rubber umbrella skirt cover of embodiment one;

[0016] Figure 4 It is structure schematic drawing for the utility model mutual inductor body embodiment two;

[0017] Figure 5 It is structure schematic drawing for the silicon rubber umbrella skirt cover of embodiment two.

[0018] In the drawing: mutual inductor body 1, annular groove 2, silicon rubber umbrella skirt cover 3, set body part 4, umbrella skirt structure part 5, convex column 6, recess 7. DETAILED DESCRIPTION

[0019] The following is further illustrated in connection with the drawings and examples.

[0020] Figure 1 、 2Embodiment 1 shown in Figs. 1-3: A pouring transformer with adjustable umbrella skirt, comprising a transformer body 1, a circumferential annular groove 2 is arranged in the middle of the transformer body 1, a colored silicone layer is coated in the annular groove 2, the thickness of the colored silicone layer is less than the depth of the annular groove, the colored silicone layer is sleeved with a circle of silicone umbrella skirt sleeve 3, the silicone umbrella skirt sleeve 3 comprises a sleeve body part 4 and an umbrella skirt structure part 5, the umbrella skirt structure part is integrally formed on the outer periphery of the sleeve body part, the sleeve body part 4 is sleeved on the annular groove 2, and the thickness of the sleeve body part is not less than the depth of the commutation groove.

[0021] Figure 1 、 3 Embodiment 2 shown in Figs. 4-6: A pouring transformer with adjustable umbrella skirt, which is different from Embodiment 1 in that a plurality of more than one concave holes 7 are arranged on the two opposite sides of the groove bottom of the annular groove 2, and the sleeve body part 4 of the silicone umbrella skirt sleeve 3 is sleeved with the convex column 6 corresponding to the concave hole 7 on the inner wall of the sleeve hole.

[0022] In Embodiment 2, the convex column is preferably arranged on the silicone umbrella skirt sleeve 3, which is convenient for molding and avoids pouring and molding difficulties and quality problems of the convex column arranged on the transformer body. At the same time, the convex column arranged on the silicone umbrella skirt sleeve is flexible, which is convenient for sleeving, clamping and positioning.

[0023] In Embodiment 2, the concave hole and the convex column can be arranged circumferentially around the annular groove.

[0024] In the above embodiments, the color of the colored silicone layer is preferably different from that of the silicone umbrella skirt sleeve.

[0025] In the above embodiments, the insulation performance of the colored silicone layer is preferably greater than that of the silicone umbrella skirt sleeve.

[0026] On the basis of the above embodiments, the groove bottom of the annular groove can also be designed as a waist drum shape in the upward and downward directions. Further, the waist drum shape is controlled not to be higher than the annular groove.

Claims

1. A cast transformer with an adjustable skirt comprising a transformer body, characterized in that: The middle part of the transformer body is provided with a circumferential annular groove, a colored silica gel layer is coated in the annular groove, the thickness of the colored silica gel layer is less than the depth of the annular groove, the colored silica gel layer is sleeved with a silicon rubber umbrella skirt, the silicon rubber umbrella skirt comprises a sleeve body and an umbrella skirt structure, the umbrella skirt structure is integrally formed on the outer periphery of the sleeve body, the sleeve body is sleeved on the annular groove, and the thickness of the sleeve body is not less than the depth of the reversing groove.

2. A bushing having an adjustable shed according to claim 1, characterized in that: The color of the colored silica gel layer is the same as or different from that of the silicon rubber umbrella skirt.

3. A cast potential transformer with an adjustable shed according to claim 1 or 2, characterised in that: The insulation performance of the colored silica gel layer is greater than that of the silicon rubber umbrella skirt.

4. A bushing having an adjustable shed according to claim 1, characterized in that: The groove bottom of the annular groove is uniformly distributed with two or more convex columns in the circumferential direction, the height of the convex columns is not higher than the annular groove, and the inner wall of the sleeve hole of the silicon rubber umbrella skirt is uniformly distributed with two or more concave holes corresponding to the convex columns in the axial direction.

5. A bushing having an adjustable shed according to claim 1, characterized in that: The groove bottom of the annular groove is uniformly distributed with two or more concave holes in the circumferential direction, and the inner wall of the sleeve hole of the silicon rubber umbrella skirt is uniformly distributed with two or more convex columns corresponding to the concave holes in the axial direction.

6. A bushing of the type defined in claim 1 or 4 or 5, characterised in that: The groove bottom of the annular groove is in the shape of a waist drum in the up-down direction.

7. A cast bushing with an adjustable shed according to claim 6, characterized in that: The waist drum is not higher than the annular groove.

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