High-voltage end outgoing line structure suitable for 132kV voltage class

Abstract

The utility model discloses a high-voltage end outgoing line structure suitable for a 132kV voltage class, which comprises a lead, a static plate is attached to the side surface of the lead, an insulating layer wraps the outer side of the lead and the static plate, an insulating support strip is arranged on the outer side of the insulating layer, insulating forming parts are symmetrically distributed on the outer surface of the insulating support strip, and the insulating forming parts are arranged on the outer surface of the insulating support strip. The large-current lead solves the problems that an existing large-current lead is uneven in heat dissipation and large in insulation distance, leakage magnetic field simulation calculation software is adopted for accurately calculating outgoing lines at the high-voltage end, the thickness of an insulation layer is controlled according to the calculation result, then the insulation forming piece and the insulation supporting strips are utilized, and the insulation distance is large. The electric field distribution around the wire outlet structure is improved, the occupied space is reduced, and the main insulation distance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of outlet structure, in particular to an outlet structure suitable for a high-voltage end of a 132kV voltage level. Background Art

[0002] The traditional 132kV terminal outlet adopts a corrugated cardboard and insulation board structure. This structure uses corrugated cardboard to divide the oil gap. After the corrugated cardboard is crimped and formed, it needs to be surrounded by the same shape as the coil outlet (circular or rectangular). Its structure is complex and inconvenient to operate, and the heat dissipation effect for large current leads cannot be guaranteed.

[0003] Therefore, a high-voltage terminal outlet structure was designed. By adopting a combination of insulating struts and insulating molded parts, the electric field distribution around the end outlet was improved, the main insulation distance at this location was greatly reduced, and uniform heat dissipation at the outlet end was ensured. Utility Model Content

[0004] The purpose of the utility model is to provide a high-voltage terminal outlet structure suitable for 132kV voltage level, which reduces the occupied space, improves the surrounding electric field distribution of the outlet structure, and reduces the main insulation distance through the combination of insulating support bars and insulating molded parts.

[0005] The utility model provides the following technical solution: a high-voltage terminal outlet structure suitable for 132kV voltage level, comprising a conductor, an electrostatic plate attached to the side of the conductor, an insulating layer wrapped around the outer side of the conductor and the electrostatic plate, an insulating support bar arranged on the outer side of the insulating layer, symmetrically distributed insulating molded parts arranged on the outer surface of the insulating support bar, and the insulating molded parts wrap the outlet structure.

[0006] Furthermore, it also includes a high-voltage coil, the electrostatic plate is installed on the high-voltage coil, the electrostatic plate is provided with a positive angle ring and a negative angle ring, a pressure plate is also provided above the negative angle ring, and the pressure plate is sleeved on the outer side of the insulating molded part.

[0007] Furthermore, the upper end of the insulating molded part extends above the pressing plate, and the extending distance of the insulating molded part is 50 mm, which ensures the stability of the length of the outlet line and meets the use requirements.

[0008] Furthermore, the insulating layer includes aluminum foil and metallized corrugated paper, the aluminum foil is wound on the conductor and the electrostatic plate, and the metallized corrugated paper is wound on the surface of the aluminum foil to complete the shielding wrapping of the conductor.

[0009] Furthermore, the insulating layer also includes a 10 mm thick insulating wrapping layer wound on the surface of the metallized corrugated paper. The insulating wrapping layer is the metallized corrugated paper. The thickness of the insulating layer is calculated by leakage magnetic field simulation to ensure the insulation performance of the outgoing line structure.

[0010] Furthermore, the cross section of the insulating molded part is C-shaped, and grooves are formed on both sides of the insulating molded part. The thickness of the grooves is 0.5 mm, and the distance between the grooves on both sides is 20 mm.

[0011] The symmetrically arranged insulating molded parts are overlapped together, and the symmetrical insulating molded parts are connected together by wrapping them tightly with electrical white cloth.

[0012] Furthermore, the insulating molded part is made of 2 mm thick kraft pulp.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are: through the structure of combining insulating struts and insulating molded parts, the electric field distribution around the lead-out structure is improved, the occupied space is reduced, and the main insulation distance there is greatly reduced. At the same time, the insulating struts effectively ensure the heat dissipation of large current lead-out lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a structural front view of the insulating molded part of the utility model;

[0016] Figure 2 It is a top view of the structure of the insulating molded part of the utility model;

[0017] Figure 3 It is a front view of the high-voltage head end of the utility model;

[0018] Figure 4 It is a top view of the high voltage head-end outlet of the utility model;

[0019] In the figure: 1. Insulation molded part; 11. Bevel; 2. Insulation stay; 3. Insulation layer; 31. Aluminum foil; 32. Metallized corrugated paper; 33. Insulation wrapping layer; 4. High-voltage coil; 5. Electrostatic plate; 6. Positive angle ring; 7. Negative angle ring; 8. Pressing plate; 9. Wire. DETAILED DESCRIPTION

[0020] 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. Example

[0021] See also Figure 4 The utility model provides a technical solution: a high-voltage terminal outlet structure suitable for 132kV voltage level, including a conductor 9, an electrostatic plate 5 is attached to the side of the conductor 9, and an insulating layer 3 is wrapped on the outer side of the conductor 9 and the electrostatic plate 5. The conductor 9 and the electrostatic plate 5 are wrapped together to ensure the outlet direction of the conductor 9. The thickness of the insulating layer 3 is calculated by leakage magnetic field simulation to ensure the insulation performance of the outlet structure. An insulating support bar 2 is arranged on the outer side of the insulating layer 3, and a symmetrically distributed insulating molded part 1 is arranged on the outer surface of the insulating support bar 2. The insulating molded part 1 wraps the outlet structure, and the length of the insulating support bar 2 is the same as the length of the insulating molded part 1. By wrapping the insulating molded part 1 on the outlet structure, the occupied space of the outlet structure is reduced, the main insulation distance at this location is greatly reduced, and the electric field distribution around the end outlet is improved. At the same time, the installation of the insulating molded part 1 is more convenient, and 6 insulating support bars 2 are arranged on the inner side of the insulating molded part 1 to increase the distance between the insulating molded part 1 and the insulating layer 3, ensuring the heat dissipation of the large current lead-out line and making the heat dissipation uniform.

[0022] like Figure 3 As shown, it also includes a high-voltage coil 4, an electrostatic plate 5 is installed on the high-voltage coil 4, a positive angle ring 6 and a negative angle ring 7 are arranged on the electrostatic plate 5, and a pressure plate 8 is also arranged above the negative angle ring 7. The pressure plate 8 is sleeved on the outer side of the insulating molded part 1, and the electrostatic plate 5 and the wire 9 are positioned by the pressure plate 8.

[0023] The upper end of the insulating molded part 1 extends above the pressing plate 8, and the extending distance of the insulating molded part 1 is 50 mm, so that the extending length of the outlet insulation structure is stable and meets the use requirements.

[0024] The insulating layer 3 includes an aluminum foil 31 and a metallized corrugated paper 32 . The aluminum foil 31 is wound on the surface of the conductor 9 and the electrostatic plate 5 , and the metallized corrugated paper 32 is wound on the surface of the aluminum foil 31 , thereby completing the shielding and wrapping of the lead conductor 9 .

[0025] The insulating layer 3 further includes an insulating wrapping layer 33 with a thickness of 10 mm wound around the surface of the metallized corrugated paper 32 . The insulating wrapping layer 33 is the metallized corrugated paper 32 . The thickness of the insulating wrapping layer 33 is calculated based on the leakage magnetic field simulation.

[0026] like Figure 1 and 2 As shown, the cross section of the insulating molded part 1 is C-shaped, grooves 11 are formed on both sides of the insulating molded part 1, the thickness of the grooves 11 is 0.5 mm, and the distance between the grooves 11 on both sides is 20 mm.

[0027] The symmetrically arranged insulating molded parts 1 are overlapped together and wrapped tightly with electrical white cloth.

[0028] The insulating profile 1 is made of 2 mm thick kraft pulp.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high voltage terminal outlet structure suitable for 132kV voltage level, comprising a conductor, characterized in that: An electrostatic plate is attached to the side of the wire, and the outside of the wire and the electrostatic plate is wrapped with an insulating layer. The outside of the insulating layer is provided with insulating struts, and the outer surface of the insulating struts is provided with symmetrically distributed insulating molded parts, and the insulating molded parts wrap the outlet structure.

2. According to claim 1, a high voltage terminal outlet structure suitable for 132kV voltage level, characterized in that: It also includes a high-voltage coil, the electrostatic plate is installed on the high-voltage coil, the electrostatic plate is provided with a positive angle ring and a negative angle ring, a pressure plate is also provided above the negative angle ring, and the pressure plate is sleeved on the outer side of the insulating molded part.

3. The high voltage terminal outlet structure applicable to 132kV voltage level according to claim 2 is characterized in that: The upper end of the insulating molded part extends above the pressing plate, and the extending distance of the insulating molded part is 50 mm.

4. The high voltage terminal outlet structure applicable to 132kV voltage level according to claim 1 is characterized in that: The insulating layer includes aluminum foil and metallized corrugated paper. The aluminum foil is wound on the conductor and the electrostatic plate, and the metallized corrugated paper is wound on the surface of the aluminum foil to complete the shielding and wrapping of the conductor.

5. The high voltage terminal outlet structure applicable to 132kV voltage level according to claim 4 is characterized in that: The insulating layer also includes a 10 mm thick insulating wrapping layer wound on the surface of the metallized corrugated paper, and the insulating wrapping layer is the metallized corrugated paper.

6. The high voltage terminal outlet structure applicable to 132kV voltage level according to claim 1 is characterized in that: The cross section of the insulating molded part is C-shaped, and grooves are formed on both sides of the insulating molded part. The thickness of the grooves is 0.5 mm, and the distance between the grooves on both sides is 20 mm.

7. The high voltage terminal outlet structure applicable to 132kV voltage level according to claim 6 is characterized in that: The symmetrically arranged insulating molded parts are overlapped together and wrapped tightly with electrical white cloth.

8. The high voltage terminal outlet structure applicable to 132kV voltage level according to claim 1 is characterized in that: The insulating profile is made of 2 mm thick kraft pulp.

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