35KV outdoor large-current inverted current transformer

Abstract

The 35KV outdoor large-current inverted current transformer comprises a tubular main body mechanism which is transversely arranged, two ends of the tubular main body are open, the main body mechanism comprises a tubular main body which is transversely arranged, an annular cavity is formed in the tubular main body, a winding is fixedly connected in the cavity, and the winding is fixedly connected with the winding. The utility model relates to the technical field of current transformers. According to the 35KV outdoor large-current inverted current transformer, through the arrangement of the main body mechanism, when the current transformer is produced, the distance between the winding and the high-voltage primary shielding cylinder and the distance between the winding and the mold are adjusted firstly, then the winding is fixed through the fixing columns, vacuum pouring curing integral forming is conducted, a pouring material is an epoxy resin mixture, and it is guaranteed that the product is free of oil, gas and pollution; the overall structure of the device adopts an inverted bus type, so that the temperature rise of the product can be reduced, the cracking of the product can be prevented, the cost can be reduced, the size is small, the weight is light, the installation is convenient, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically a 35KV outdoor high-current inverted current transformer. Background Technology

[0002] A current transformer is an instrument that measures current by converting a large primary current into a small secondary current based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has very few turns and is connected in series with the circuit whose current needs to be measured.

[0003] Most existing current transformer products are filled with transformer oil, and a small number are filled with FS6 gas. Both of them have leakage problems, which cause pollution and are not environmentally friendly. In addition, both are large in size and heavy in weight, making installation and maintenance inconvenient. At the same time, they are expensive to manufacture and uneconomical. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a 35KV outdoor high-current inverted current transformer, which solves the problems of existing current transformers, most of which are filled with transformer oil and a few are filled with FS6 gas, both of which have leakage, pollution and environmental problems. In addition, both are large in size and heavy in weight, making installation and maintenance inconvenient, and their manufacturing costs are high and uneconomical.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a 35KV outdoor high-current inverted current transformer, comprising a main body structure that is horizontally arranged and open at both ends and is tubular;

[0006] The main structure includes a horizontally arranged tubular body with an annular cavity inside. A winding is fixedly connected inside the cavity, and a high-voltage primary shielding cylinder adapted to the inner contour of the tubular body is fixedly connected to the inner annular surface of the tubular body.

[0007] Furthermore, a support tube is vertically fixedly connected to the middle of the lower surface of the main body, and a secondary lead shielding tube is fixedly connected to the inside of the support tube along its length.

[0008] Furthermore, an insulator sleeve is fixedly connected to the outer surface of the support tube along its length.

[0009] Furthermore, a base is horizontally fixedly connected to the bottom end of the support tube.

[0010] Furthermore, the tubular body is made of an epoxy resin mixture.

[0011] Furthermore, the outer surface of the main body is provided with a semiconductor coating.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This 35KV outdoor high-current inverted current transformer, through the setting of the main structure, first adjusts the distance between the winding and the high-voltage primary shielding cylinder and the mold during the production of the current transformer, then fixes the winding with fixing columns, and vacuum casts and cures it into a whole. The casting material is an epoxy resin mixture, which ensures that the product is free of oil, gas, grease and pollution, and requires no special maintenance, which is in line with the concept of green and environmentally friendly substation products. In addition, the overall structure of the device adopts an inverted busbar type, which can reduce the temperature rise of the product, prevent the product from cracking, reduce costs, and make it small in size, light in weight, and easy to install, thereby improving the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a partial cross-sectional structural diagram of the present invention;

[0014] Figure 2 This is a front view structural diagram of the present utility model;

[0015] Figure 3 This is a side view of the structure of this utility model.

[0016] In the diagram: 1-Main body, 11-Tubular body, 12-Winding, 13-High voltage primary shielding tube, 2-Supporting tube, 3-Secondary lead shielding tube, 4-Base. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 This utility model provides a technical solution: a 35KV outdoor high current inverted current transformer, including a main body 1 that is arranged horizontally and has open ends and is tubular;

[0019] The main body 1 includes a horizontally arranged tubular body 11, with an annular cavity inside the tubular body 11. A winding 12 is fixedly connected inside the cavity, and a high-voltage primary shielding cylinder 13 that matches the inner contour of the tubular body 11 is fixedly connected to the inner annular surface of the tubular body 11.

[0020] A support tube 2 is vertically fixedly connected to the middle of the lower surface of the main body 1, and a secondary lead wire shielding tube 3 is fixedly connected to the inside of the support tube 2 along its length.

[0021] The bottom end of the support tube 2 is horizontally fixedly connected to the base 4.

[0022] The tubular body 11 is made of an epoxy resin mixture.

[0023] During the production of this current transformer, the distance between the winding 12 and the high-voltage primary shielding cylinder 13 and the mold is first adjusted. Then, the winding 12 is fixed with fixing columns, and the entire unit is formed by vacuum casting and curing. The casting material is an epoxy resin mixture, ensuring that the product is free of oil, gas, fumes, and pollution. It requires no special maintenance and conforms to the concept of green and environmentally friendly substation products. Furthermore, the overall structure of the device adopts an inverted busbar type, which can reduce the product temperature rise, prevent product cracking, reduce costs, and make it small in size, light in weight, and easy to install, thereby improving the practicality of the device.

[0024] The support tube 2, the secondary lead shield tube 3, and the base 4 are all existing technologies for current transformers, and will not be described in detail here.

[0025] An insulator sleeve is fixedly connected to the outer surface of the support tube 2 along its length.

[0026] Insulator sleeves provide insulation.

[0027] The outer surface of the main body 1 is coated with a semiconductor coating.

[0028] After the device is molded as a whole, a layer of silicone is evenly brushed onto its outer surface, and a special silicone sleeve is put on and pressed tightly.

[0029] This device is integrally molded by casting with an epoxy resin mixture, ensuring that the product is oil-free, gas-free, free of pollutants, and requires no special maintenance. It conforms to the concept of green and environmentally friendly substation products. Furthermore, the overall structure of the device adopts an inverted busbar type, which can reduce the product temperature rise, prevent product cracking, reduce costs, and make it small in size, light in weight, and easy to install, thereby improving the practicality of the device.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] 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 35KV outdoor high-current inverted current transformer, characterized in that: It includes a main body structure that is horizontally arranged, open at both ends, and tubular (1); The main body (1) includes a horizontally arranged tubular body (11), the tubular body (11) has an annular cavity inside, the cavity is fixedly connected to a winding (12), and the inner annular surface of the tubular body (11) is fixedly connected to a high-voltage primary shielding cylinder (13) that matches its inner contour. A support tube (2) is vertically fixedly connected to the middle of the lower surface of the main body (1), and a secondary lead shield tube (3) is fixedly connected inside the support tube (2) along its length.

2. A 35KV outdoor high-current inverted current transformer according to claim 1, characterized in that: An insulator sleeve is fixedly connected to the outer surface of the support tube (2) along its length.

3. A 35KV outdoor high-current inverted current transformer according to claim 1, characterized in that: The bottom end of the support tube (2) is horizontally fixedly connected to the base (4).

4. A 35KV outdoor high-current inverted current transformer according to claim 1, characterized in that: The tubular body (11) is made of an epoxy resin mixture.

5. A 35KV outdoor high-current inverted current transformer according to claim 1, characterized in that: The outer surface of the main body (1) is provided with a semiconductor coating.

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