Outdoor box-type 10kV voltage transformer

Abstract

The utility model relates to the technical field of voltage transformers, and discloses an outdoor box type 10kV voltage transformer which comprises a protection box, a plurality of sets of installation lugs are fixedly installed on the outer side face of the protection box, a plurality of sets of protruding strips are fixedly installed on the inner bottom face of the protection box, and a voltage transformer body is arranged in the protection box. The bottom surface of the voltage transformer body is provided with a plurality of groups of sliding grooves matched with the protruding strips in structure, the voltage transformer body is installed in the protection box in a sliding mode through matching of the sliding grooves and the protruding strips, and solidified epoxy resin plays a role in sealing the connecting position of the high-voltage insulating sleeve and the connecting flange. Finally, the top cover is fixedly installed on the protection box, the protection box and the top cover play a role in protecting the voltage transformer body, meanwhile, the protection box and the top cover play a role in shielding epoxy resin solidified in the pouring groove, the situation that the epoxy resin is exposed outside for a long time and aged is avoided, and the effect of multi-layer efficient protection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformers, in particular to an outdoor box-type 10kV voltage transformer. Background Art

[0002] 10kV voltage transformer is a device that can convert 10kV high voltage signal into lower voltage signal. Transformer is a device that works based on the principle of electromagnetic induction. It consists of two sealed coils, one is the input coil (generally called the primary coil) and the other is the output coil (generally called the secondary coil). 10kV voltage transformer is mainly used for measuring, monitoring and protection equipment in power systems. They are often installed in high-voltage transmission lines or substations to measure the voltage and convert high voltage signals into low voltage signals suitable for measuring instruments or protection devices.

[0003] Epoxy resin cast voltage transformer has the advantages of strong sealing and good insulation performance. However, epoxy resin is easily aged over time after being exposed to wind and sun for a long time, which can cause power failures. The cast epoxy resin is difficult to protect.

[0004] To this end, we propose an outdoor box-type 10kV voltage transformer. Utility Model Content

[0005] The utility model mainly solves the above technical problems and provides an outdoor box-type 10kV voltage transformer.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an outdoor box-type 10kV voltage transformer, including a protection box, a plurality of groups of mounting ears are fixedly installed on the outer side of the protection box, a plurality of groups of raised strips are fixedly installed on the inner bottom surface of the protection box, a voltage transformer body is arranged inside the protection box, a plurality of groups of slide grooves with structures matching the raised strip structures are arranged on the bottom surface of the voltage transformer body, the voltage transformer body is slidably installed inside the protection box through the cooperation of the slide grooves and the raised strips, and the voltage transformer body is lifted by arranging a plurality of groups of raised strips, so that a gap is formed between the bottom surface of the voltage transformer body and the inner bottom surface of the protection box, and a gap is also arranged between the surrounding side walls of the voltage transformer body and the side walls of the protection box. Through such an arrangement, the voltage transformer body is suspended in the protection box, thereby facilitating heat dissipation;

[0007] A casting trough is provided on the top surface of the voltage transformer body, a plurality of connecting flanges are provided on the casting trough, a high-voltage insulating bushing is provided on the connecting flange, and two sets of top covers are fixedly installed on the top surface of the protection box by rivets.

[0008] Preferably, a connecting portion is provided at the lower end of the high-voltage insulating bushing, and a threaded ring is threadedly mounted on the connecting portion.

[0009] Preferably, the high-voltage insulating bushing is threadedly mounted on the connecting flange via a threaded ring.

[0010] Preferably, the two groups of top covers are distributed in front and back mirror images, and a through opening is opened on the side of the two groups of top covers close to each other, and the upper end of the high-voltage insulating sleeve extends vertically upward through the through opening.

[0011] Preferably, a connecting plate is provided on the side wall of the voltage transformer body, a wiring groove is provided on the side wall of the protection box, and the outer end of the connecting plate is distributed in the wiring groove.

[0012] Preferably, a rainproof cover is provided on the outer side of the protection box at the position corresponding to the wiring slot, and the external line is connected to the voltage transformer body through a connecting plate, and the rainproof cover plays a waterproof and rainproof role.

[0013] Beneficial Effects

[0014] The utility model provides an outdoor box-type 10kV voltage transformer. It has the following beneficial effects:

[0015] (1) When installing an outdoor box-type 10kV voltage transformer, first install the voltage transformer body inside the protection box, then install multiple sets of high-voltage insulating bushings on the connecting flange, pour epoxy resin into the casting trough, and the solidified epoxy resin seals the connection between the high-voltage insulating bushing and the connecting flange. Finally, fix the top cover on the protection box. The protection box and the top cover protect the voltage transformer body. At the same time, the protection box and the top cover shield the solidified epoxy resin in the casting trough, preventing the epoxy resin from being exposed to the outside for a long time and aging, thereby achieving a multi-layer high-efficiency protection effect.

[0016] (2) This outdoor box-type 10kV voltage transformer has a plurality of groups of raised strips to lift the voltage transformer body, so that a gap is formed between the bottom surface of the voltage transformer body and the inner bottom surface of the protection box. The surrounding side walls of the voltage transformer body and the side walls of the protection box are also provided with a gap. Through such an arrangement, the voltage transformer body is suspended in the protection box, achieving the effect of facilitating the heat dissipation of the voltage transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional split structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the high-voltage insulating bushing of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the protective box of the utility model.

[0022] Legend:

[0023] 1. Protective box; 2. Mounting ears; 3. Top cover; 30. Through port; 4. Rivet; 5. High-voltage insulating sleeve; 50. Connecting part; 51. Threaded ring; 6. Wiring groove; 7. Rain cover; 8. Raised strip; 9. Voltage transformer body; 90. Connecting plate; 10. Slide groove; 11. Casting groove; 12. Connecting flange. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment: An outdoor box-type 10kV voltage transformer, such as Figure 1-Figure 3As shown, it includes a protection box 1, a plurality of groups of mounting ears 2 are fixedly installed on the outer side surface of the protection box 1, a plurality of groups of raised strips 8 are fixedly installed on the inner bottom surface of the protection box 1, a voltage transformer body 9 is arranged inside the protection box 1, a plurality of groups of slide grooves 10 whose structures are adapted to the structures of the raised strips 8 are provided on the bottom surface of the voltage transformer body 9, the voltage transformer body 9 is slidably installed inside the protection box 1 through the cooperation of the slide grooves 10 and the raised strips 8, the voltage transformer body 9 is lifted by the plurality of groups of raised strips 8, so that a gap is formed between the bottom surface of the voltage transformer body 9 and the inner bottom surface of the protection box 1, the side walls around the voltage transformer body 9 are also provided with a gap from the side walls of the protection box 1, and such an arrangement makes the voltage transformer body 9 suspended in the protection box 1, so as to facilitate heat dissipation;

[0026] A casting trough 11 is provided on the top surface of the voltage transformer body 9, and a plurality of connecting flanges 12 are provided on the casting trough 11. A high-voltage insulating bushing 5 is provided on the connecting flange 12. A connecting portion 50 is provided at the lower end of the high-voltage insulating bushing 5. A threaded ring 51 is threadedly installed on the connecting portion 50. The high-voltage insulating bushing 5 is threadedly installed on the connecting flange 12 through the threaded ring 51.

[0027] Two groups of top covers 3 are fixedly installed on the top surface of the protection box 1 through rivets 4. The two groups of top covers 3 are distributed in front and back mirror images. A through opening 30 is opened on the side where the two groups of top covers 3 are close to each other. The upper end of the high-voltage insulating bushing 5 extends vertically upward through the through opening 30. During installation, the voltage transformer body 9 is first installed inside the protection box 1, and then multiple groups of high-voltage insulating bushings 5 ​​are installed on the connecting flange 12. Epoxy resin is poured into the casting trough 11. The solidified epoxy resin seals the connection between the high-voltage insulating bushing 5 and the connecting flange 12. Finally, the top cover 3 is fixedly installed on the protection box 1. The protection box 1 and the top cover 3 are provided to protect the voltage transformer body 9. At the same time, the protection box 1 and the top cover 3 shield the solidified epoxy resin in the casting trough 11 to prevent the epoxy resin from being exposed to the outside for a long time and aging.

[0028] The side wall of the voltage transformer body 9 is provided with a connecting plate 90, and the side wall of the protection box 1 is provided with a wiring groove 6. The outer end of the connecting plate 90 is distributed in the wiring groove 6. The outer side surface of the protection box 1 is provided with a rainproof cover 7 at the position corresponding to the wiring groove 6. The external line is connected to the voltage transformer body 9 through the connecting plate 90, and the rainproof cover 7 is provided to play a waterproof and rainproof role.

[0029] The working principle of this utility model:

[0030] During installation, first install the voltage transformer body 9 inside the protection box 1, then install multiple groups of high-voltage insulating bushings 5 ​​on the connecting flange 12, pour epoxy resin into the casting trough 11, and the solidified epoxy resin seals the connection between the high-voltage insulating bushing 5 and the connecting flange 12. Finally, fix the top cover 3 on the protection box 1. The protection box 1 and the top cover 3 are provided to protect the voltage transformer body 9. At the same time, the protection box 1 and the top cover 3 shield the solidified epoxy resin in the casting trough 11 to prevent the epoxy resin from being exposed to the outside for a long time and aging.

[0031] By providing a plurality of groups of raised strips 8 to lift the voltage transformer body 9, a gap is formed between the bottom surface of the voltage transformer body 9 and the inner bottom surface of the protection box 1. The side walls around the voltage transformer body 9 and the side walls of the protection box 1 are also provided with a gap. Through such an arrangement, the voltage transformer body 9 is suspended in the protection box 1 to facilitate heat dissipation.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An outdoor box-type 10 kV voltage transformer, comprising a protection box (1), wherein a plurality of mounting ears (2) are fixedly mounted on the outer side of the protection box (1), characterized in that: The inner bottom surface of the protection box (1) is fixedly mounted with a plurality of groups of raised strips (8); a voltage transformer body (9) is arranged inside the protection box (1); the bottom surface of the voltage transformer body (9) is provided with a plurality of groups of slide grooves (10) whose structures are compatible with the structures of the raised strips (8); the voltage transformer body (9) is slidably mounted inside the protection box (1) through the cooperation of the slide grooves (10) and the raised strips (8); The top surface of the voltage transformer body (9) is provided with a casting trough (11), a plurality of connection flanges (12) are provided on the casting trough (11), a high-voltage insulating bushing (5) is provided on the connection flange (12), and two sets of top covers (3) are fixedly mounted on the top surface of the protection box (1) by rivets (4).

2. An outdoor box-type 10kV voltage transformer according to claim 1, characterized in that: A connecting portion (50) is provided at the lower end of the high-voltage insulating bushing (5), and a threaded ring (51) is threadedly mounted on the connecting portion (50).

3. An outdoor box-type 10kV voltage transformer according to claim 2, characterized in that: The high-voltage insulating bushing (5) is threadedly mounted on the connecting flange (12) via a threaded ring (51).

4. An outdoor box-type 10kV voltage transformer according to claim 1, characterized in that: The two groups of top covers (3) are distributed in a front-to-back mirror image manner, and a through opening (30) is provided on one side of the two groups of top covers (3) close to each other, and the upper end of the high-voltage insulating sleeve (5) extends vertically upward through the through opening (30).

5. The outdoor box-type 10kV voltage transformer according to claim 1, characterized in that: A connecting plate (90) is provided on the side wall of the voltage transformer body (9), a wiring groove (6) is provided on the side wall of the protection box (1), and the outer end of the connecting plate (90) is distributed in the wiring groove (6).

6. An outdoor box-type 10kV voltage transformer according to claim 5, characterized in that: A rainproof cover (7) is provided on the outer side surface of the protection box (1) at a position corresponding to the wiring slot (6).

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