10kV direct current energy supply transformer
By adopting a design that connects low-voltage input coils and high-voltage output coils in parallel in a 10kV DC power supply transformer, and by adding a shielding layer to the outside of the coils, the problems of large size and high cost of existing transformers are solved, and a compact, insulated, and reliable high-voltage operation effect is achieved.
Patent Information
- Application Number
- CN202423219105.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing 10kV high-voltage DC power transformers suffer from problems such as large size and high cost, and it is difficult to balance high voltage resistance and insulation performance.
Multiple low-voltage input coils are connected in parallel to the low-voltage input port, and high-voltage output coils are connected to the high-voltage output port respectively. A shielding layer is installed outside the coils, combined with a C-shaped iron core and an epoxy-cast shell to form a compact structure and enhance insulation.
This resulted in a compact, high-voltage resistant, and reliably insulated 10kV DC power transformer, reducing production costs and ensuring long-term stable operation of the equipment.
Smart Images
Figure CN223757371U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a transformer, specifically 10kV direct current energy supply transformer. BACKGROUND
[0002] In the design, manufacture, test and installation of 10kV distribution transformer in domestic, a series of standards and regulations, such as GB 1094 series standards, need to be followed, these standards cover general, temperature rise, insulation level, insulation test, external insulation air gap, lightning impulse and operating impulse test guide, ability to withstand short circuit and many other aspects. For the transformer part of high voltage direct current power supply, because its output voltage is very high, special requirements are put forward to component voltage resistance, structure design and insulation material and so on. In order to ensure the performance of high voltage resistance, insulation and so on of the existing transformer of this kind, multiple high and low voltage coil windings are usually more isolated, and the space is large when the corresponding iron core is installed, which increases the volume of the whole transformer and also increases the production cost. SUMMARY
[0003] The utility model provides a simple structure, compact, with 10kV direct current energy supply transformer of high voltage resistance, insulation reliability.
[0004] The technical scheme adopted by the utility model is: a 10kV direct current energy supply transformer, including C type iron core, high voltage output coil and low voltage input coil that are all cast in epoxy casting shell, characterized in that: multiple low voltage input coils are sequentially connected on the core column of C type iron core through epoxy framework respectively, the same name end of multiple low voltage input coils is connected in parallel to the low voltage input port on the epoxy casting shell, each low voltage input coil is connected with high voltage output coil through inner shielding layer and epoxy resin cylinder, high voltage output coil is provided with outer shielding layer, and multiple high voltage output coils are connected to multiple high voltage output ports on the epoxy casting shell respectively.
[0005] The bottom of the epoxy casting shell is a metal bottom plate.
[0006] The L and N same name ends of multiple low voltage input coils are connected in parallel to the low voltage input L and N ports on the epoxy casting shell.
[0007] Multiple high voltage output coil L and N are connected to multiple high voltage output L and N ports on the epoxy casting shell respectively.
[0008] The outer shielding layer is provided with a soft angle ring.
[0009] The low voltage input coil is connected with the low voltage input port through polyester enameled wire.
[0010] The high voltage output coil is connected with the high voltage output port through polyester enameled wire.
[0011] The epoxy skeletons of the two adjacent groups of low-voltage input coils abut against each other and support each other.
[0012] The lower end of the C-shaped core is supported in the epoxy pouring shell by the support plate.
[0013] The transformer comprises an epoxy pouring body and a metal bottom plate, a plurality of high-voltage output coils are uniformly distributed on the two end core columns of the core in the epoxy pouring body, and each high-voltage output coil is circumscribed to form a high-voltage output port; the low-voltage input coils are connected in parallel by the same name and connected to form a low-voltage input port, the structure is compact, the high-voltage resistance between the low-voltage input port and the plurality of high-voltage output coils is strong, the high-voltage and low-voltage coils of the product are provided with shielding layers, the insulation and reliability of the equipment are improved, and the long-term stable and reliable operation of the equipment is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is an external structure schematic view of the utility model;
[0015] Figure 2 It is an internal structure schematic view. Figure 1
[0016] In the drawing: epoxy pouring shell 1, bottom plate 2, high-voltage output port 3, low-voltage input port 4, C-shaped core 5, epoxy skeleton 6, low-voltage input coil 7, inner shielding layer 8, epoxy resin cylinder 9, high-voltage output coil 10, outer shielding layer 11, support plate 12. DETAILED DESCRIPTION
[0017] Further description is made below in combination with the drawings.
[0018] Figure 1 2 As shown in the figure: a 10kV direct current energy supply transformer, comprising a C-shaped core 5, a high-voltage output coil 10 and a low-voltage input coil 7 poured in an epoxy pouring shell 1, a metal bottom plate 2 arranged at the bottom of the epoxy pouring shell 1, and a low-voltage input port 4 of a group of LN and a high-voltage output port 3 of six groups of LN arranged outside the epoxy pouring shell 1. A plurality of low-voltage input coils 7 are sequentially connected to the core column of the C-shaped core 5 through the epoxy skeleton 6, the same name ends of the plurality of low-voltage input coils 7 are connected in parallel to the low-voltage input port 4 on the epoxy pouring shell through polyester enameled wire, each low-voltage input coil 7 is externally sleeved with the high-voltage output coil 10 through the inner shielding layer 8 and the epoxy resin cylinder 9, the high-voltage output coil 10 is externally provided with the outer shielding layer 11, and the plurality of high-voltage output coils 10 are respectively connected to the plurality of high-voltage output ports 3 on the epoxy pouring shell 1.
[0019] In the embodiment, the C-shaped core 5 is supported in the bottom of the epoxy pouring shell by the support plate 12.
[0020] In the embodiment, the L and N same name ends of the plurality of low-voltage input coils are connected in parallel to the low-voltage input L and N ports on the epoxy pouring shell.
[0021] In the embodiment, the plurality of high-voltage output coils L and N are respectively connected to the plurality of high-voltage output L and N ports on the epoxy pouring shell.
[0022] In the embodiment, the epoxy skeletons of the two adjacent groups of low-voltage input coils abut and support each other.
[0023] On the basis of the embodiment, the outer shielding layer is further designed with a soft angle ring.
Claims
1. A power supply transformer for 10 kV DC, comprising a C-type core, a high-voltage output coil and a low-voltage input coil which are all cast in an epoxy cast housing, characterized in that: The multiple low-voltage input coils are sequentially connected in turn on the core columns of the C-shaped core through epoxy skeletons, and the like-named ends of the multiple low-voltage input coils are connected in parallel to the low-voltage input ports on the epoxy pouring shell.
2. A power supply transformer for 10 kV DC according to claim 1, characterized in that: The bottom of the epoxy pouring shell is a metal bottom plate.
3. A power supply transformer for 10 kV DC according to claim 1, characterized in that: The L and N like-named ends of the multiple low-voltage input coils are connected in parallel to the low-voltage input L and N ports on the epoxy pouring shell.
4. The power supply transformer for 10 kV DC according to claim 1, characterized by: The L and N of the multiple high-voltage output coils correspond to the multiple high-voltage output L and N ports on the epoxy pouring shell.
5. The power supply transformer for 10 kV DC according to claim 1, characterized by: The outer shielding layer has a soft corner ring.
6. A power supply transformer for 10 kV DC according to claim 1, characterized in that: The low-voltage input coil is connected with the low-voltage input port through polyester enameled wire.
7. A power supply transformer for 10 kV DC according to claim 1, characterized in that: The high-voltage output coil is connected with the high-voltage output port through polyester enameled wire.
8. A power supply transformer for 10 kV DC according to claim 1, characterized in that: The epoxy skeletons of the adjacent two groups of low-voltage input coils support each other.
9. A power supply transformer for 10 kV DC according to claim 1, characterized in that: The lower end of the C-shaped core is supported in the epoxy pouring shell by a support plate.