Insulation sealing structure of dry-type transformer

Abstract

The utility model relates to the technical field of dry type transformers, in particular to an insulation sealing structure of a dry type transformer. The insulation sealing structure of the dry-type transformer specifically comprises a high-voltage winding, a high-voltage wire outlet nut, a connecting rod and a sheath, the high-voltage winding outgoing line terminal is connected with the high-voltage outgoing line nut, and the high-voltage outgoing line nut is detachably connected with the connecting rod; the sheath comprises a first sheath and a second sheath, the first sheath is communicated with the second sheath, the first sheath is sleeved with the high-voltage wire outlet nut, and the second sheath is sleeved with the connecting rod; the first sheath is in interference fit with the high-voltage outgoing line nut, and the second sheath is in interference fit with the connecting rod. The utility model has the advantage of reducing the overall size of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type transformers, in particular to an insulating sealing structure of a dry-type transformer. Background Art

[0002] Generally, when the high-voltage winding voltage of a dry-type transformer is high, a large insulation distance is required between the winding outlet nut and the ground or other conductive bodies. Especially when the product has a protective casing, in order to ensure the insulation distance, the casing is designed to be large in size, which makes it difficult to meet the use requirements of some occasions with compact installation space.

[0003] Therefore, in view of the deficiencies in the prior art, an insulating sealing structure for a dry-type transformer is provided. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an insulating sealing structure for a dry-type transformer, aiming to solve the problem of a bulky casing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An insulating and sealing structure of a dry-type transformer, comprising: a high-voltage winding, a high-voltage outlet nut, a connecting rod and a sheath;

[0007] The high-voltage winding outlet terminal is connected to the high-voltage outlet nut, and the high-voltage outlet nut is detachably connected to the connecting rod;

[0008] The sheath includes a first sheath and a second sheath, the first sheath is communicated with the second sheath, the first sheath is sleeved with the high-voltage outlet nut, and the second sheath is sleeved with the connecting rod;

[0009] The first sheath is interference-fitted with the high-voltage outlet nut, and the second sheath is interference-fitted with the connecting rod.

[0010] As a further improvement of the technical solution of the present utility model, the end of the high-voltage outlet nut is provided with a frustum portion, and the frustum portion is used to support and fix the high-voltage winding outlet terminal.

[0011] As a further improvement to the technical solution of the present invention, a connecting sleeve is provided at the connection between the first sleeve and the second sleeve, and the connecting sleeve is sleeved on the frustum portion.

[0012] As a further improvement of the technical solution of the present utility model, the frustum portion is detachably connected to the connecting rod.

[0013] As a further improvement of the technical solution of the present utility model, the sheath is L-shaped.

[0014] As a further improvement of the technical solution of the present utility model, the sheath is a fully sealed insulating sheath.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the insulation sealing structure of the dry-type transformer of this invention, a sheath is installed between the high-voltage outlet nut and the connecting rod, effectively reducing the insulation distance between the high-voltage outlet nut and the ground (proven to have a reduction ratio of approximately 30%), effectively reducing the overall size of the product and lowering manufacturing costs. Simultaneously, the first and second sheaths form an interference fit with the high-voltage outlet nut and the connecting rod, providing excellent sealing performance. In harsh installation environments, this prevents salt spray, mold, and other environmental factors from directly contacting and corroding the outlet nut, thereby improving product operational reliability. The insulation sealing structure of this dry-type transformer is characterized by a reduced overall product size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technology of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] Figure 1 This is a structural diagram of the insulation sealing structure of the utility model dry-type transformer;

[0019] Figure 2 The utility model is a structural diagram of a sheath in the insulating sealing structure of a dry-type transformer.

[0020] In the picture:

[0021] 1. High voltage winding;

[0022] 2. High-voltage outlet nut; 21. Cone part;

[0023] 3. Connecting rod;

[0024] 4. Sheath; 41. First sheath; 411. Connecting sleeve; 42. Second sheath. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0026] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, terms such as "upper," "lower," "left," and "right" used in this disclosure are intended solely to describe the relative positions of the components of the disclosure as shown in the accompanying drawings.

[0027] Reference Figures 1 to 2 , an insulation sealing structure of a dry-type transformer, comprising a high-voltage winding 1, a high-voltage outlet nut 2, a connecting rod 3 and a sheath 4;

[0028] In one embodiment, the outlet terminal of the high-voltage winding 1 is connected to the high-voltage outlet nut 2, and the high-voltage outlet nut 2 is detachably connected to the connecting rod 3; the sheath 4 includes a first sheath 41 and a second sheath 42, the first sheath 41 is connected to the second sheath 42, the first sheath 41 is sleeved with the high-voltage outlet nut 2, and the second sheath 42 is sleeved with the connecting rod 3; the first sheath 41 is interference fit with the high-voltage outlet nut 2, and the second sheath 42 is interference fit with the connecting rod 3.

[0029] When in use, first connect the high-voltage winding 1 to the high-voltage outlet nut 2, install the second sheath 42 on the connecting rod 3, then put the first sheath 41 on the high-voltage outlet nut 2, and connect the connecting rod 3 to the frustum part 21.

[0030] Installing a sheath 4 between the high-voltage outlet nut 2 and the connecting rod 3 effectively reduces the insulation distance of the high-voltage outlet nut 2 to the ground (proven to be approximately 30%), effectively reducing the overall size of the product and lowering manufacturing costs. Furthermore, the first sheath 41 and the second sheath 42 form an interference fit with the high-voltage outlet nut 2 and the connecting rod 3, providing excellent sealing performance. In harsh installation environments, this prevents salt spray, mold, and other environmental factors from directly contacting and corroding the outlet nut, thereby improving product operational reliability. The insulating sealing structure of this dry-type transformer reduces the overall size of the product.

[0031] In one embodiment, the high-voltage outlet nut 2 has a frustum 21 at its end. This frustum 21 is used to support and secure the outlet terminal of the high-voltage winding 1, ensuring the stability and safety of the outlet. A connecting sleeve 411 is provided at the junction of the first sheath 41 and the second sheath 42. The connecting sleeve 411 is fitted around the frustum 21.

[0032] In one embodiment, the end of the high-voltage outlet nut 2 connected to the high-voltage winding 1 is in the shape of a truncated cone. Therefore, the first sheath 41 sleeved on the high-voltage outlet nut 2 is correspondingly configured to be in the shape of a truncated cone. Since the frustum portion 21 will be subsequently connected to the connecting rod 3, the connecting sleeve 411 is designed to be slightly larger than the frustum portion 21 to avoid damage during installation.

[0033] In one embodiment, the frustum portion 21 is detachably connected to the connecting rod 3 .

[0034] In one embodiment, the sheath 4 is L-shaped and is a fully sealed insulating sheath 4 .

[0035] For other details of the insulation sealing structure of the dry-type transformer described in the present invention, please refer to the prior art and will not be described in detail here.

[0036] The above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. An insulation sealing structure for a dry-type transformer, characterized in that: include: High-voltage winding, high-voltage outlet nuts, connecting rods and sheaths; The high-voltage winding outlet terminal is connected to the high-voltage outlet nut, and the high-voltage outlet nut is detachably connected to the connecting rod; The sheath includes a first sheath and a second sheath, the first sheath is communicated with the second sheath, the first sheath is sleeved with the high-voltage outlet nut, and the second sheath is sleeved with the connecting rod; The first sheath is interference-fitted with the high-voltage outlet nut, and the second sheath is interference-fitted with the connecting rod.

2. The insulating sealing structure of a dry-type transformer according to claim 1, characterized in that: The end of the high-voltage outlet nut is provided with a frustum portion, and the frustum portion is used to support and fix the high-voltage winding outlet terminal.

3. The insulating sealing structure of a dry-type transformer according to claim 2, characterized in that: A connecting sleeve is provided at the connection between the first sleeve and the second sleeve, and the connecting sleeve is sleeved with the frustum portion.

4. The insulating sealing structure of a dry-type transformer according to claim 2, characterized in that: The frustum portion is detachably connected to the connecting rod.

5. The insulating sealing structure of a dry-type transformer according to claim 1, characterized in that: The sheath is L-shaped.

6. The insulating sealing structure of a dry-type transformer according to claim 1, characterized in that: The sheath is a fully sealed insulating sheath.

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