GIL with coordinated arrangement of electrodes and particle traps

Abstract

The present invention provides a GIL with coordinated electrodes and particle traps. The GIL comprises: a conductor disposed within a metal housing; a post insulator disposed on the conductor; a first trap plate disposed within the metal housing in an axial direction corresponding to the post insulator, the first trap plate having a first trap groove on its side facing the post insulator; a blocking electrode disposed on the conductor in an axial direction of the metal housing, spaced from the post insulator; and a second trap plate disposed within the metal housing in an axial direction corresponding to the blocking electrode, the second trap plate having a second trap groove on its side facing the blocking electrode. The blocking electrode has a blocking slope inclined toward the second trap plate, the blocking slope being arranged at an angle to the axis of the metal housing. The technical solution provided by this application can solve the problem of metal particles trapped in the trap groove in related AC / DC GILs escaping from the trap groove.

Description

Technical Field

[0001] The present invention relates to the field of GIL technology, and in particular to a GIL with coordinated arrangement of electrodes and particle traps. Background Art

[0002] Gas-Insulated Transmission Lines (GILs) utilize insulating gases such as SF6 as the insulating medium. Post insulators support the conductor within a metal casing, ensuring a coaxial arrangement between the conductor and the metal casing. Compared to traditional transmission methods, GILs offer advantages such as high capacity and resistance to insulation aging. They are suitable for specialized applications such as crossing mountains and rivers and for urban power transmission, and are therefore widely used both domestically and internationally. Metal particles are inevitably generated within the GIL due to factors such as incomplete cleaning of residual metal particles during production, debris generated by internal compression and friction during transportation, and friction caused by contact insertion. Under the influence of electric field forces, these metal particles gravitate to the interface between the three-post insulator, SF6, and the grounded casing, where the electric field strength is high. Adherence of these metal particles to the surface of the three-post insulator can cause surface flashover, seriously threatening the insulation performance of the three-post insulator.

[0003] In the related art, a particle trap plate is set on the inner wall of the metal shell. The particle trap plate is located below the support insulator. The particle trap plate is an arc-shaped metal plate coaxially arranged with the metal shell. A trap groove is opened on the side of the particle trap plate facing the support insulator by stamping or other means. The metal particles entering the trap groove cannot be supported by sufficient electric field force to jump out of the trap groove, and are thus captured by the trap groove.

[0004] However, in a DC GIL, metal particles have great activity and kinetic energy due to the unipolar electric field force. In an AC GIL, the alternating electric field force will bring more complex and changeable movement forms to the metal particles, so that the metal particles that have entered the trap groove still have enough energy to support their escape from the trap groove. Summary of the Invention

[0005] The present invention provides a GIL with coordinated arrangement of electrodes and particle traps, so as to solve the problem of metal particles entering the trap grooves in the AC / DC GILs in the related art escaping from the trap grooves.

[0006] The present invention provides a GIL with coordinated arrangement of electrodes and particle traps, the GIL with coordinated arrangement of electrodes and particle traps comprising: a metal shell; a conductor, which is passed through the metal shell and coaxially arranged with the metal shell; a post insulator, which is arranged on the conductor and connected to the metal shell; a first trap plate, which is arranged in the metal shell in an axial direction corresponding to the post insulator, and has a first trap groove on a side of the first trap plate facing the post insulator; a blocking electrode, which is arranged on the conductor in the axial direction of the metal shell, spaced apart from the post insulator; a second trap plate, which is arranged in the metal shell in an axial direction corresponding to the blocking electrode, and has a second trap groove on a side of the second trap plate facing the blocking electrode, the blocking electrode having a blocking inclined surface inclined toward the second trap plate, the blocking inclined surface being arranged at an angle to the axis of the metal shell.

[0007] Furthermore, the blocking electrode includes a first electrode and a second electrode spaced apart in the axial direction of the metal shell, the first electrode and the second electrode are located on the same side of the support insulator in the axial direction of the metal shell, the first electrode and the second electrode both have blocking slopes, and the second trap plate is respectively arranged at both ends in the axial direction of the metal shell corresponding to the first electrode and the second electrode.

[0008] Furthermore, the first electrode and the second electrode are symmetrically arranged in the axial direction of the metal shell; and / or the symmetry axis of the second trap plate is located in the middle between the first electrode and the second electrode.

[0009] Furthermore, the first electrode is a first frustum structure symmetrical with respect to the axis of the metal shell, the second electrode is a second frustum structure symmetrical with respect to the axis of the metal shell, the blocking slope includes an annular side surface of the first frustum structure and an annular side surface of the second frustum structure; and / or, the spacing between the first electrode and the second electrode is between 230 mm and 240 mm.

[0010] Furthermore, the included angle between the blocking slope and the axis of the metal shell is between 4° and 10°.

[0011] Furthermore, the second trap plate includes: an arc-shaped plate, which is coaxially arranged with the metal shell and located below the blocking electrode, and the second trap groove is arranged on the side of the arc-shaped plate facing the blocking electrode; a support plate, which is arranged at both ends of the arc-shaped plate in the axial direction of the metal shell, and the end of the support plate facing the conductor is connected to the arc-shaped plate, and the end of the support plate away from the conductor is in contact with the inner wall of the metal shell.

[0012] Furthermore, a relief notch is provided at the lower end of the support plate; and / or the arc-shaped plate protrudes from or is flush with the blocking electrode in the circumferential direction of the metal shell.

[0013] Furthermore, the GIL in which the electrodes and the particle trap are cooperatively arranged further comprises a shielding cover provided on the conductor, wherein the shielding cover is located between the post insulator and the barrier electrode.

[0014] Furthermore, the distance between the shielding cover and the blocking electrode is between 100 mm and 120 mm; and / or, the GIL that cooperatively arranges electrodes and particle traps includes two blocking electrodes and two second trap plates, the two blocking electrodes are respectively located on both sides of the support insulator in the axial direction of the metal shell, the two second trap plates are respectively arranged corresponding to the two blocking electrodes, and shielding covers are provided on both sides of the conductor in the axial direction of the metal shell.

[0015] Furthermore, the first trap plate is an annular plate coaxially arranged with the metal shell, the first trap groove is arranged on the inner wall of the annular plate, and the annular plate is arranged around the outer side of the support insulator; and / or, the GIL that coordinates the arrangement of the electrodes and the particle trap also includes a metal connector, and the first trap plate is fixed together with the support insulator through the metal connector.

[0016] By applying the technical solution of the present invention, a GIL with coordinated arrangement of electrodes and particle traps includes a metal shell, a conductor, a post insulator, a first trap plate, a blocking electrode and a second trap plate. The time from the generation of metal particles near the post insulator (for example, metal particles generated by mutual squeezing of metal connecting components due to vibration of the metal shell or expansion due to temperature rise) to the time they fall near the post insulator is short, so that the time for the metal particles generated near the post insulator to be acted upon by the unipolar electric field force is also short, and the metal particles generated near the post insulator accumulate little kinetic energy, so that the metal particles generated near the post insulator easily fall into the first trap plate directly below the post insulator, and the metal particles generated near the post insulator do not have sufficient energy to escape after falling into the first trap groove, thereby achieving the capture of the metal particles by the first trap plate. Metal particles generated far from the post insulator are accelerated by the electric field for a long time and gain a large amount of kinetic energy. When these metal particles move toward the post insulator, they fall into the second trap groove or collide with the blocking slope and then fall into the second trap groove. Even if the metal particles still have enough energy to escape after falling into the second trap groove, the escaped metal particles will still collide with the blocking slope and fall into the second trap groove. During the collision between the metal particles and the blocking slope, the metal particles lose kinetic energy until they no longer have the energy to escape from the second trap groove, thereby achieving the capture of the metal particles by the second trap plate. Therefore, the first trap plate is used to collect metal particles generated near the post insulator, the blocking electrode and the second trap plate cooperate to collect metal particles generated far from the post insulator, and the blocking slope is used to guide the metal particles into the second trap groove. The collision between the metal particles and the blocking slope consumes the metal particles' energy until they no longer have the energy to escape from the second trap groove. This effectively captures different metal particles, improves the particle trapping efficiency, and significantly reduces the number of metal particles near the post insulator, thereby achieving protection for the post insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 A cross-sectional view of a GIL in which electrodes and a particle trap are cooperatively arranged according to an embodiment of the present invention is shown;

[0019] Figure 2 A schematic structural diagram of a second trap plate of a GIL in which electrodes and particle traps are cooperatively arranged according to an embodiment of the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Metal casing;

[0022] 20. Conductor;

[0023] 30. Post insulator;

[0024] 40. First trap plate; 41. First trap groove;

[0025] 50. Blocking electrode; 51. Blocking slope; 511. Annular side surface of the first truncated cone structure; 512. Annular side surface of the second truncated cone structure; 52. First electrode; 53. Second electrode;

[0026] 60. Second trap plate; 61. Second trap groove; 62. Arc plate; 63. Support plate; 631. Avoidance gap;

[0027] 70. Shielding cover;

[0028] D. The distance between the shield and the blocking electrode. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a GIL with coordinated arrangement of electrodes and particle traps, the GIL with coordinated arrangement of electrodes and particle traps includes a metal shell 10, a conductor 20, a post insulator 30, a first trap plate 40, a blocking electrode 50, and a second trap plate 60. The conductor 20 is disposed in the metal shell 10 and is coaxially arranged with the metal shell 10. The post insulator 30 is disposed on the conductor 20 and is connected to the metal shell 10. The first trap plate 40 and the post insulator 30 are correspondingly disposed in the metal shell 10 in the axial direction of the metal shell 10. A trap plate 40 has a first trap groove 41 on its side facing the post insulator 30, a blocking electrode 50 is arranged on the conductor 20 in the axial direction of the metal shell 10, and is spaced apart from the post insulator 30. A second trap plate 60 and the blocking electrode 50 are arranged in the metal shell 10 in the axial direction of the metal shell 10 correspondingly. The second trap plate 60 has a second trap groove 61 on its side facing the blocking electrode 50, and the blocking electrode 50 has a blocking inclined surface 51 inclined toward the second trap plate 60, and the blocking inclined surface 51 is arranged at an angle to the axis of the metal shell 10.

[0031] By applying the GIL with coordinated arrangement of electrodes and particle traps provided in this embodiment, the time from the generation of metal particles near the post insulator 30 (for example, metal particles generated by the mutual squeezing of metal connecting components due to the vibration of the metal shell 10 or the expansion due to temperature rise) to the time they fall near the post insulator 30 is shorter, so that the time for the metal particles generated near the post insulator 30 to be acted upon by the unipolar electric field force is also shorter, and the metal particles generated near the post insulator 30 accumulate little kinetic energy, so that the metal particles generated near the post insulator 30 easily fall into the first trap plate 40 directly below the post insulator 30, and the metal particles generated near the post insulator 30 do not have enough energy to escape after falling into the first trap groove 41, thereby achieving the capture of the metal particles by the first trap plate 40.

[0032] By applying the GIL with coordinated arrangement of electrodes and particle traps provided in this embodiment, the metal particles generated far away from the support insulator 30 are accelerated by the electric field force for a long time and obtain a large amount of kinetic energy. When the metal particles move toward the support insulator 30, the metal particles fall into the second trap groove 61 or collide with the blocking slope 51 and then fall into the second trap groove 61. Even if the metal particles fall into the second trap groove 61, they still have enough energy to escape therefrom. The escaped metal particles will still collide with the blocking slope 51 and then fall into the second trap groove 61. During the collision between the metal particles and the blocking slope 51, the metal particles will lose kinetic energy until the metal particles no longer have the energy to escape from the second trap groove 61, thereby achieving the capture of the metal particles by the second trap plate 60.

[0033] Therefore, the first trap plate 40 is used to collect metal particles generated near the post insulator 30, the blocking electrode 50 and the second trap plate 60 are used to cooperate to collect metal particles generated far away from the post insulator 30, and the blocking slope 51 is used to induce the metal particles to enter the second trap groove 61. The collision between the metal particles and the blocking slope 51 is used to consume the energy of the metal particles until the metal particles no longer have the energy to escape from the second trap groove 61. Different metal particles are effectively captured, the particle trap capture efficiency is improved, and the metal particles near the post insulator 30 are significantly reduced, thereby protecting the post insulator 30.

[0034] In this embodiment, the collision between the metal particles and the blocking slope 51 can be used to consume the energy of the metal particles and capture high-energy metal particles in the DC GIL. The metal particles can also be bounced to the area where the second trap plate 60 is located after the collision with the blocking slope 51 and fall into the second trap groove 61. The blocking slope 51 can be used to induce the metal particles to enter the second trap groove 61, thereby capturing metal particles with complex motion trajectories in the AC GIL.

[0035] The metal housing 10 is horizontally arranged and grounded.

[0036] It should be noted that the blocking slope 51 is inclined toward the second trap plate 60, which means that after the metal particles collide with the blocking slope 51, they are bounced to the area where the second trap plate 60 is located and fall into the second trap groove 61, thereby preventing the metal particles from colliding with the blocking slope 51 and being bounced to the vicinity of the support insulator 30.

[0037] like Figure 1As shown, the blocking electrode 50 includes a first electrode 52 and a second electrode 53 spaced apart in the axial direction of the metal shell 10. The first electrode 52 and the second electrode 53 are located on the same side of the post insulator 30 in the axial direction of the metal shell 10. The first electrode 52 and the second electrode 53 both have a blocking slope 51. The second trap plate 60 is disposed at both ends in the axial direction of the metal shell 10 corresponding to the first electrode 52 and the second electrode 53. When the metal particles generated far away from the support insulator 30 move toward the support insulator 30, some of the metal particles will collide with the second electrode 53, causing the metal particles to lose kinetic energy, and the other part will enter the capture area between the first electrode 52 and the second electrode 53. The metal particles entering the capture area fall into the second trap groove 61 or collide with the blocking slope 51 and then fall into the second trap groove 61. Even if the metal particles fall into the second trap groove 61, they still have enough energy to escape from it. The escaped metal particles will still collide with the blocking slope 51 and then fall into the second trap groove 61. In the process of the collision between the metal particles and the blocking slope 51, the metal particles will lose kinetic energy until the metal particles no longer have the energy to escape from the second trap groove 61, thereby realizing the capture of the metal particles by the second trap plate 60.

[0038] It should be noted that the second trap plate 60 is respectively arranged at both ends in the axial direction of the metal shell 10 corresponding to the first electrode 52 and the second electrode 53, which means that after the metal particles collide with the blocking slope 51 set on the first electrode 52, they will be bounced to the area where the second trap plate 60 is located and fall into the second trap groove 61. After the metal particles collide with the blocking slope 51 set on the second electrode 53, they will be bounced to the area where the second trap plate 60 is located and fall into the second trap groove 61, so as to improve the reliability of the metal particles falling into the second trap groove 61 after colliding with the blocking slope 51.

[0039] like Figure 1 As shown, the first electrode 52 and the second electrode 53 are symmetrically arranged in the axial direction of the metal housing 10 .

[0040] like Figure 1 As shown, the symmetry axis of the second trap plate 60 is located in the middle between the first electrode 52 and the second electrode 53 , that is, the first electrode 52 and the second electrode 53 are symmetrically arranged with respect to the symmetry axis of the second trap plate 60 .

[0041] like Figure 1As shown, the first electrode 52 is a first frustum structure symmetrical with respect to the axis of the metal shell 10, the second electrode 53 is a second frustum structure symmetrical with respect to the axis of the metal shell 10, and the blocking slope 51 includes an annular side surface 511 of the first frustum structure and an annular side surface 512 of the second frustum structure, thereby increasing the area ratio of the blocking slope 51 on the first electrode 52 and the second electrode 53, and increasing the blocking range of the blocking slope 51 to metal particles.

[0042] In this embodiment, the distance between the first electrode 52 and the second electrode 53 is between 230 mm and 240 mm.

[0043] In this embodiment, the included angle between the blocking slope 51 and the axis of the metal housing 10 is between 4° and 10°.

[0044] like Figure 2 As shown, the second trap plate 60 includes a curved plate 62 and a support plate 63. The curved plate 62 is coaxially arranged with the metal housing 10 and is located below the blocking electrode 50. The second trap groove 61 is provided on the side of the curved plate 62 facing the blocking electrode 50. The support plates 63 are provided at both ends of the curved plate 62 in the axial direction of the metal housing 10. The end of the support plate 63 facing the conductor 20 is connected to the curved plate 62, and the end of the support plate 63 away from the conductor 20 abuts against the inner wall of the metal housing 10. The support plates 63 are provided at both ends of the curved plate 62 in the axial direction of the metal housing 10 so that the support plates 63 support the curved plate 62 within the metal housing 10. There is a gap between the curved plate 62 and the metal housing 10, so that metal particles rolling down the inner wall of the metal housing 10 along the circumference of the metal housing 10 can smoothly enter the trap area between the curved plate 62 and the metal housing 10 and be captured.

[0045] like Figure 2 As shown, the lower end of the support plate 63 is provided with an avoidance notch 631, so that metal particles moving along the axial direction of the metal shell 10 on the inner wall of the metal shell 10 can enter the trap area between the arc plate 62 and the metal shell 10 through the avoidance notch 631 and be captured.

[0046] In this embodiment, the arc plate 62 protrudes or is flush with the blocking electrode 50 in the circumferential direction of the metal shell 10, so that the horizontal projection of the arc plate 62 protrudes or is flush with the horizontal projection of the blocking electrode 50 in a direction perpendicular to the axial direction of the metal shell 10, so that the metal particles falling from the blocking electrode 50 can fall directly onto the second trap plate 60 and fall into the second trap groove 61, thereby improving the capture range of the second trap plate 60 for the metal particles.

[0047] like Figure 1As shown, the GIL with cooperatively arranged electrodes and particle traps further includes a shield 70 disposed on the conductor 20 . The shield 70 is located between the post insulator 30 and the barrier electrode 50 . The shield 70 can be used to uniformize the electric field distribution near the post insulator 30 .

[0048] Specifically, the shielding cover 70 is made of metal and its surface is coated with insulating paint.

[0049] like Figure 1 As shown, the distance D between the shielding cover 70 and the blocking electrode 50 is between 100 mm and 120 mm, which prevents local discharge between the shielding cover 70 and the blocking electrode 50 due to dense distribution of potential lines and excessive local field strength.

[0050] like Figure 1 As shown, the GIL, which features coordinated electrode and particle trap arrangements, includes two blocking electrodes 50 and two second trap plates 60. The two blocking electrodes 50 are located on either side of the post insulator 30 in the axial direction of the metal shell 10. The two second trap plates 60 are disposed corresponding to the two blocking electrodes 50. A shield 70 is provided on both sides of the conductor 20 in the axial direction of the metal shell 10. Consequently, the blocking electrodes 50 and the second trap plates 60 are provided on both sides of the post insulator 30 in the axial direction of the metal shell 10. This allows the post insulator 30 to be captured by trapping metal particles on both sides of the metal shell 10 in the axial direction. Furthermore, the two shields 70 are used to uniformize the electric field distribution near the post insulator 30.

[0051] like Figure 1 As shown, the first trap plate 40 is an annular plate coaxially arranged with the metal shell 10, and the first trap groove 41 is arranged on the inner side wall of the annular plate. The annular plate is arranged around the outer side of the support insulator 30 to increase the capture range of the first trap plate 40 for metal particles.

[0052] In this embodiment, the GIL, which coordinates the arrangement of electrodes and particle traps, further includes a metal connector, through which the first trap plate 40 is secured to the post insulator 30. The metal connector connects the first trap plate 40 to the post insulator 30, grounding the post insulator 30, the first trap plate 40, and the metal housing 10. This allows the first trap plate 40 and the metal housing 10 to form a low-field strength region, preventing metal particles from escaping from the first trap plate 40.

[0053] In this embodiment, the surface of the barrier electrode 50 is a smooth plane.

[0054] In this embodiment, the post insulator 30 has three legs, which extend radially along the metal shell 10. A metal insert is provided at one end of the leg away from the conductor 20. The metal insert is connected to the metal shell 10, so that the post insulator 30 is grounded together with the metal shell 10, and the conductor 20 is supported at the center position of the metal shell 10 by the post insulator 30.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0057] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0060] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A GIL with coordinated arrangement of electrodes and particle traps, characterized in that: The GIL with coordinated arrangement of electrodes and particle traps comprises: Metal housing (10); A conductor (20) is inserted into the metal shell (10) and is coaxially arranged with the metal shell (10); a post insulator (30) disposed on the conductor (20) and connected to the metal housing (10); a first trap plate (40) arranged in the metal shell (10) in an axial direction of the metal shell (10) corresponding to the post insulator (30), and a first trap groove (41) is provided on a side of the first trap plate (40) facing the post insulator (30); a blocking electrode (50) disposed on the conductor (20) at a distance from the post insulator (30) in the axial direction of the metal shell (10); A second trap plate (60) is arranged in the metal shell (10) in an axial direction of the metal shell (10) corresponding to the blocking electrode (50), and a second trap groove (61) is provided on a side of the second trap plate (60) facing the blocking electrode (50), and the blocking electrode (50) has a blocking inclined surface (51) inclined toward the second trap plate (60), and the blocking inclined surface (51) is arranged at an angle to the axis of the metal shell (10).

2. The GIL with coordinated arrangement of electrodes and particle traps according to claim 1, wherein: The blocking electrode (50) comprises a first electrode (52) and a second electrode (53) which are spaced apart in the axial direction of the metal shell (10); the first electrode (52) and the second electrode (53) are located on the same side of the post insulator (30) in the axial direction of the metal shell (10); the first electrode (52) and the second electrode (53) both have the blocking slope (51); and the second trap plate (60) is respectively arranged at both ends of the metal shell (10) in the axial direction corresponding to the first electrode (52) and the second electrode (53).

3. The GIL with coordinated arrangement of electrodes and particle traps according to claim 2, wherein: The first electrode (52) and the second electrode (53) are symmetrically arranged in the axial direction of the metal shell (10); and / or, The symmetry axis of the second trap plate (60) is located in the middle between the first electrode (52) and the second electrode (53).

4. The GIL with coordinated arrangement of electrodes and particle traps according to claim 2, wherein: The first electrode (52) is a first truncated cone structure symmetrical with respect to the axis of the metal shell (10), the second electrode (53) is a second truncated cone structure symmetrical with respect to the axis of the metal shell (10), and the blocking slope (51) includes an annular side surface (511) of the first truncated cone structure and an annular side surface (512) of the second truncated cone structure; and / or, The distance between the first electrode (52) and the second electrode (53) is between 230 mm and 240 mm.

5. The GIL having coordinated arrangement of electrodes and particle traps according to any one of claims 1 to 4, characterized in that: The angle between the blocking slope (51) and the axis of the metal shell (10) is between 4° and 10°.

6. The GIL having coordinated arrangement of electrodes and particle traps according to any one of claims 1 to 4, characterized in that: The second trap plate (60) comprises: an arc-shaped plate (62) coaxially arranged with the metal housing (10) and located below the blocking electrode (50), wherein the second trap groove (61) is arranged on a side of the arc-shaped plate (62) facing the blocking electrode (50); A support plate (63) is provided at both ends of the arc-shaped plate (62) in the axial direction of the metal shell (10), one end of the support plate (63) facing the conductor (20) is connected to the arc-shaped plate (62), and one end of the support plate (63) away from the conductor (20) is in contact with the inner wall of the metal shell (10).

7. The GIL with coordinated arrangement of electrodes and particle traps according to claim 6, wherein: The lower end of the support plate (63) is provided with an avoidance notch (631); and / or, The arc-shaped plate (62) protrudes from or is flush with the blocking electrode (50) in the circumferential direction of the metal shell (10).

8. The GIL having coordinated arrangement of electrodes and particle traps according to any one of claims 1 to 4, characterized in that: The GIL with cooperatively arranged electrodes and particle traps further comprises a shield (70) disposed on the conductor (20), wherein the shield (70) is located between the post insulator (30) and the barrier electrode (50).

9. The GIL with coordinated arrangement of electrodes and particle traps according to claim 8, wherein: The distance between the shielding cover (70) and the blocking electrode (50) is between 100 mm and 120 mm; and / or, The GIL with coordinated arrangement of electrodes and particle traps comprises two blocking electrodes (50) and two second trap plates (60), wherein the two blocking electrodes (50) are respectively located on both sides of the support insulator (30) in the axial direction of the metal shell (10), and the two second trap plates (60) are respectively arranged corresponding to the two blocking electrodes (50), and the conductor (20) is provided with the shielding cover (70) on both sides of the metal shell (10) in the axial direction.

10. The GIL having coordinated arrangement of electrodes and particle traps according to any one of claims 1 to 4, characterized in that: The first trap plate (40) is an annular plate coaxially arranged with the metal shell (10), the first trap groove (41) is arranged on the inner side wall of the annular plate, and the annular plate is arranged around the outer side of the post insulator (30); and / or, The GIL with cooperatively arranged electrodes and particle traps further comprises a metal connector, and the first trap plate (40) is fixed together with the support insulator (30) via the metal connector.

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