Extra-high voltage high-adaptability double-shielding ascending flanged base shielding structure

Abstract

The invention relates to an extra-high voltage high-adaptability double-shielding ascending flanged base shielding structure. The ultrahigh-voltage high-adaptability double-shielding ascending flanged base shielding structure comprises a first shielding ring and a second shielding ring, the first shielding ring and the second shielding ring are both non-closed rings, the first shielding ring is arranged on the outer side of the second shielding ring, the first shielding ring is connected to the surface of a transition flange through a first installation piece, and the second shielding ring is connected to the surface of a second installation piece. The second shielding ring is connected to the surface of the transition flange through a second mounting piece, and the first shielding ring is connected with a first grounding device; according to the ultrahigh-voltage high-adaptability double-shielding ascending flanged base shielding structure, ascending flanged bases of different voltage grades adopt high-adaptability and double-ring shielding ring structures, two non-closed shielding rings are installed through transition flanges of different calibers, electric field distribution is improved, the electrode shape is changed, sharp corner discharging is prevented, and outgoing lines of different voltage grades are met; the oil tank is used in standardized and modularized oil tanks, and has high adaptability.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer equipment, and in particular relates to an ultra-high voltage high-adaptability double-shielding elevated seat shielding structure. Background Art

[0002] As my country's DC transmission technology becomes increasingly mature, standardization and modularization of the appearance of large-capacity and high-voltage converter transformers has become an inevitable trend. Standardized and modular appearance can effectively reduce production costs and improve product competitiveness.

[0003] Against this background, a "UHV highly adaptable double-shielded elevated seat shielding structure" was produced. This double-ring structure can meet the needs of lead-out lines of different voltage levels and can be used in standardized and modular oil tanks, with high adaptability. Summary of the invention

[0004] The purpose of the present invention is to provide a simple-structured, reasonably-designed, ultra-high-voltage, highly adaptable double-shielded riser shielding structure in order to solve the above-mentioned problems; to solve the problem of electric field distribution on the main structural parts of the lead-out wires of transformers of different voltage levels, to achieve standardization and modularization of the transformer appearance, to improve production efficiency and to save costs.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A UHV high-adaptability double-shielding elevated seat shielding structure comprises a first shielding ring and a second shielding ring, wherein the first shielding ring and the second shielding ring are both non-closed rings, the first shielding ring is arranged on the outside of the second shielding ring, the first shielding ring is connected to the surface of a transition flange through a first mounting member, the second shielding ring is connected to the surface of a transition flange through a second mounting member, the first shielding ring is connected to a first grounding device, the second shielding ring is connected to a second grounding device, and the transition flange is fixed to the surface of a side wall of an oil tank.

[0007] As a further optimization solution of the present invention, the first shielding ring and the second shielding ring are both made of paper-wrapped copper rods, and the ends of the first shielding ring and the second shielding ring are both rounded.

[0008] As a further optimization solution of the present invention, the first shielding ring is single-ended grounded through a first grounding device; and the second shielding ring is single-ended grounded through a second grounding device.

[0009] As a further optimization solution of the present invention, the closed gaps of the first shielding ring and the second shielding ring are staggered.

[0010] The beneficial effects of the present invention are as follows: the present invention adopts a "high adaptability" and "double ring" shielding ring structure in risers of different voltage levels, installs two non-closed shielding rings through transition flanges of different calibers, improves the electric field distribution, changes the electrode shape, prevents sharp-angle discharge, meets the lead-out wires of different voltage levels, and is used in standardized and modular oil tanks with high adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the installation structure of the low-end small-caliber riser of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of a high-end large-caliber riser of the present invention;

[0013] Figure 3 It is a schematic diagram of the overall installation structure of the double-ring shielding ring of the present invention;

[0014] Figure 4 It is a schematic diagram of the specific installation structure of the double-ring shielding ring of the present invention;

[0015] Figure 5 It is a structural schematic diagram of the mounting member of the present invention.

[0016] In the figure: 1, first shielding ring; 2, second shielding ring; 3, first grounding device; 4, second grounding device; 5, first mounting member; 51, fixed pressure plate; 52, extrusion plate; 53, fixed plate; 54, matching groove; 55, rotating ball; 56, connecting block; 57, screw block; 58, slot; 6, second mounting member; 7, side wall of oil tank; 8, transition flange. DETAILED DESCRIPTION

[0017] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] Example 1

[0019] refer to Figures 1 to 4 The structure shown is a UHV high-adaptability double-shielding elevated seat shielding structure, comprising a first shielding ring 1 and a second shielding ring 2, wherein the first shielding ring 1 and the second shielding ring 2 are both non-closed rings, the first shielding ring 1 is arranged on the outside of the second shielding ring 2, the first shielding ring 1 is connected to the surface of the transition flange 8 through a first mounting member 5, the second shielding ring 2 is connected to the surface of the transition flange 8 through a second mounting member 6, the first shielding ring 1 is connected to a first grounding device 3, the second shielding ring 2 is connected to a second grounding device 4, and the transition flange 8 is fixed to the surface of the oil tank side wall 7.

[0020] The first shielding ring 1 and the second shielding ring 2 are both made of paper-wrapped copper rods, and the ends of the first shielding ring 1 and the second shielding ring 2 are both rounded.

[0021] The first shielding ring 1 is single-endedly grounded via a first grounding device 3 ; the second shielding ring 2 is single-endedly grounded via a second grounding device 4 ; and the closed gaps of the first shielding ring 1 and the second shielding ring 2 are staggered.

[0022] The transition flange 8 is used for the transition connection of the rising seat. The shielding ring is installed at the connection between the transition flange 8 on the inner side of the rising seat and the side wall 7 of the oil tank through the mounting part to shield the edges and corners and improve the local electric field. The transition flange 8 can be designed with different calibers according to the needs of different voltage levels to meet the installation requirements of high-end and low-end rising seats, and use the same oil tank together to achieve standardization and modularization of oil tank design, improve production efficiency and save costs.

[0023] refer to Figure 1 , Figure 2 The structure shown in the figure, the side wall of the oil tank of the converter transformer with different voltage levels can be selected in the same way through the transition flange, and the same oil tank can be installed with two types of valve side bushings of high and low end

[0024] The structure of the present application is not limited to the lead-out position of the transformer riser, but is also applicable to solving the electric field distribution problem on other main structural parts, which can realize the standardization and modularization of the transformer appearance, improve production efficiency and save costs.

[0025] The "high adaptability" and "double-ring" shielding ring structure is adopted in the riser of different voltage levels. Two non-closed shielding rings are installed through transition flanges of different calibers to improve the electric field distribution, change the electrode shape, and prevent sharp-angle discharge. It meets the lead-out lines of different voltage levels and is used in standardized and modular fuel tanks with high adaptability.

[0026] The "highly adaptable double-shielded elevated seat shielding ring" has a special structure. The "double-ring" shielding ring solves the problem of electric field distribution on the main structural parts of the lead-out wires of transformers of different voltage levels, realizes the standardization and modularization of the transformer appearance, improves production efficiency and saves costs.

[0027] Example 2

[0028] Based on the above embodiment 1, Figure 5 In the structure shown, the first mounting member 5 and the second mounting member 6 both include a fixing plate 53, the fixing plate 53 is movably connected with a rotating ball 55, the rotating ball 55 is fixedly connected with a connecting block 56, the end of the connecting block 56 is connected with a screw block 57, the surface of the screw block 57 and the surface of the connecting block 56 form a slot 58, and the slot 5 clamps the shielding ring.

[0029] The screw block 57 is threadedly connected to the connecting block 56, that is, a threaded rod is provided at one end of the screw block 57, and the threaded rod is inserted into the connecting block 56. The distance from the screw block 57 to the end of the connecting block 56 can be adjusted by rotation, so as to facilitate the application of shielding rings of different sizes and models.

[0030] A matching groove 54 is defined in the fixing plate 53 , and the rotating ball 55 is disposed in the matching groove 54 .

[0031] The surface of the fixed plate 53 is attached with an extrusion plate 52, and the extrusion plate 52 can be pressed on the surface of the rotating ball 55. The surface of the extrusion plate 52 is pressed with a fixed pressing plate 51; wherein the extrusion plate 52 is a friction plate made of rubber, and the friction force of the rotating ball 55 is increased by squeezing the extrusion plate 52 and the rotating ball 55.

[0032] The extrusion sheet 52 is connected to the fixed pressing sheet 51 by glue.

[0033] The surface of the mounting piece is provided with screw holes, and the mounting piece is mounted by screws. Short bolts can also be used to compress and fix the pressing plate 51 and the fixing plate 53 and weld the whole.

[0034] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0038] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0039] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A UHV high adaptability double shielding elevated seat shielding structure, characterized in that: The invention comprises a first shielding ring (1) and a second shielding ring (2), wherein the first shielding ring (1) and the second shielding ring (2) are both non-closed rings, the first shielding ring (1) is arranged on the outer side of the second shielding ring (2), the first shielding ring (1) is connected to the surface of a transition flange (8) through a first mounting member (5), the second shielding ring (2) is connected to the surface of a transition flange (8) through a second mounting member (6), the first shielding ring (1) is connected to a first grounding device (3), the second shielding ring (2) is connected to a second grounding device (4), and the transition flange (8) is fixed to the surface of a side wall (7) of an oil tank; the first shielding ring (1) and the second shielding ring (2) are both made of paper-wrapped copper rods, and the ends of the first shielding ring (1) and the second shielding ring (2) are both rounded.

2. The UHV high-adaptability double-shield elevated seat shielding structure according to claim 1, characterized in that: The first shielding ring (1) is single-endedly grounded via a first grounding device (3); and the second shielding ring (2) is single-endedly grounded via a second grounding device (4).

3. The UHV high-adaptability double-shield elevated seat shielding structure according to claim 2 is characterized by: The closed gaps of the first shielding ring (1) and the second shielding ring (2) are arranged in a staggered manner.

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