Transportation cover plate assembly for GIL

Abstract

The invention provides a GIL transportation cover plate assembly. The GIL transportation cover plate assembly comprises a supporting base, a cover plate, a fixing assembly, a first limiting assembly and a second limiting assembly. The cover plate is arranged on the supporting seat in a covering manner; the fixing assembly is arranged in the middle of the supporting seat, the fixing assembly comprises two fixing parts which abut against each other, and a fixing space for clamping and fixing a conductor in the GIL is defined by the two fixing parts; the first limiting assembly is used for enabling the axis of the supporting base to be overlapped with the axis of the fixing space. The second limiting assembly is provided with a limiting surface which abuts against the end part of the conductor. According to the transportation cover plate assembly for the GIL, the fixing assembly is fixed to the center position of the supporting base through the first limiting assembly, the two fixing parts fix the conductor from the two sides of the conductor of the GIL, gaps do not need to be reserved, the stability of conductor transportation is improved, and the stability of the conductor in the transportation process is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical equipment, and particularly relates to a transportation cover assembly for GIL. Background Art

[0002] Gas-insulated transmission line equipment (referred to as GIL) is a new type of transmission equipment, which has the characteristics of large transmission capacity, compact layout, high reliability, and no fire risk.

[0003] At present, the minimum standard transportation unit of GIL is about 12 meters. The internal conductor and the outer shell are connected as a whole at the factory, so the conductor cannot be transported separately. Due to the special structure of GIL, at least 6 meters of the internal conductor is a cantilever end. If no prevention and control measures are taken during transportation, the conductor will move relatively, and then metal particles and other impurities will be generated, affecting the insulation performance of the product; at the same time, the relative movement will also generate certain stress on the fixed end, affecting its mechanical properties.

[0004] The traditional transportation cover is welded by a cylinder and a flange. The conductor is placed in the cylinder, and a rubber gasket is bonded to the inner side of the cylinder; for the convenience of installation, there will be a certain gap between the conductor and the gasket, otherwise the conductor cannot be installed into the cylinder, which will cause relative movement between the conductor and the gasket during transportation, and the foreign matters generated by the relative movement between the conductor and the gasket will enter the GIL, thereby affecting the insulation performance of the product. Summary of the Invention

[0005] An embodiment of the invention provides a transportation cover assembly for GIL, aiming to solve the technical problem that there is a gap between the conductor and the gasket in the conventional transportation device in the prior art, which affects the stability of the conductor during transportation and causes foreign matters to enter the GIL.

[0006] To achieve the above object, the technical solution adopted by the invention is:

[0007] Provided is a transportation cover plate assembly for a GIL, which includes a support seat, a cover plate, a fixing component, a first limiting component, and a second limiting component; the support seat is of an annular structure and is used for connecting with the GIL housing; the cover plate covers the support seat; the fixing component is arranged in the middle of the support seat, and the fixing component includes two mutually abutting fixing parts, and the two fixing parts are symmetrically arranged about the axis of the support seat, and a fixing space for clamping and fixing the GIL conductor is formed by enclosing between the two fixing parts; the first limiting component is arranged between the support seat and the fixing part and is used for making the axis of the support seat coincide with the axis of the fixing space; the second limiting component is connected to the fixing part, and the second limiting component is arranged on the side of the fixing part away from the support seat, and the second limiting component has a limiting plate, the plate surface of the limiting plate is perpendicular to the axis of the support seat, and the side surface of the limiting plate facing the support seat forms a limiting surface for abutting against the end of the conductor, and the limiting surface can limit the axial displacement of the conductor.

[0008] In a possible implementation manner, the fixing part includes an arc-shaped ring and a buffer pad arranged on the inner wall of the arc-shaped ring. Fixing holes are respectively arranged at both ends of one of the arc-shaped rings, and connection holes corresponding to the fixing holes are respectively arranged at both ends of the other arc-shaped ring, and the two arc-shaped rings are fixedly connected by a connecting piece passing through the fixing holes and the connection holes.

[0009] In a possible implementation manner, the connecting piece includes a bolt with a nut, a nut, and an elastic member. The bolt sequentially passes through the corresponding fixing hole and the connection hole and is connected to the nut; the elastic member is sleeved on the outer periphery of the bolt, and both ends of the elastic member respectively abut against the arc-shaped ring and the nut, and the elastic member is configured with a pre-tightening force for pushing the nut away from the arc-shaped ring.

[0010] In a possible implementation manner, a ring-shaped stepped groove is formed in the inner ring of the support seat, and there are multiple first limiting components. Each first limiting component includes:

[0011] A sliding seat, which is slidably arranged in the stepped groove along the circumferential direction of the support seat;

[0012] A screw rod, which extends along the radial direction of the support seat, and one end of the screw rod close to the fixing part is connected to the fixing part; and

[0013] A sleeve, which is arranged between the screw rod and the sliding seat, one end of the sleeve is rotatably connected to the sliding seat, and the rotation axis coincides with the axis of the screw rod, and the other end of the sleeve is screwed to the screw rod;

[0014] Wherein, the multiple sliding seats slide synchronously, and the included angle between adjacent two sliding seats is the same.

[0015] In a possible implementation, the sliding seat is provided with insertion protrusions on the side fitting the stepped groove, and the groove wall of the stepped groove is provided with insertion slots. The insertion slots are in insertion fit with the insertion protrusions to limit the displacement of the sliding seat in the axial direction of the support seat. A pulley is provided on the side of the sliding seat away from the fixed part, and an annular guide rail is provided at the bottom of the stepped groove. The pulley is in rolling fit with the annular guide rail.

[0016] In a possible implementation, the second limiting component further includes:

[0017] Two connecting seats, which are respectively arranged on the sides of the two fixed parts and are symmetrically arranged about the axis of the fixed space; and

[0018] Two connecting plates, which are respectively connected to the corresponding connecting seats. The plate surfaces of the connecting plates are parallel to the axial direction of the support seat, and the plate surfaces of the two connecting plates are parallel to each other. A plurality of mounting holes are provided on the plate surfaces of the connecting plates, and the plurality of mounting holes in the same connecting plate are arranged at intervals along the axis of the fixed space;

[0019] Fixing protrusions are provided on the outer periphery of the limiting plate corresponding to the mounting holes, and the fixing protrusions are selectively in insertion fit with the plurality of mounting holes. The side of the limiting plate facing the fixing component forms the limiting surface.

[0020] In a possible implementation, the support seat is provided with a plurality of through support holes along its circumferential direction, and the support holes are used for connecting with the GIL shell.

[0021] In a possible implementation, a support ring is coaxially provided on the surface of the support seat, and the support holes are distributed outside the support ring; a plurality of reinforcing plates are further provided on the support seat, and the reinforcing plates are arranged between two adjacent support holes and are respectively connected to the support seat and the support ring.

[0022] In a possible implementation, the cover plate includes an integrally formed cover body and a sealing ring. Sealing holes are provided on the sealing ring corresponding to the support holes. A sealing groove is provided at the top of the sealing hole, and the sealing groove is communicated with the sealing hole. A gasket is provided in the sealing groove.

[0023] In a possible implementation, the cover plate further includes an airbag, and the airbag covers the outer surface of the cover body.

[0024] Compared with the prior art, the transportation cover assembly for GIL provided by the present invention is provided with a support seat as the fixed main body. The fixing component is fixed at the central position of the support seat by using the first limiting component. The fixing component is in direct contact with the conductor of the GIL. The two fixing parts fix the conductor from both sides of the conductor of the GIL, without leaving a gap, improving the stability of the conductor transportation and reducing the installation difficulty of the conductor and the fixing component. The first limiting component fixes the two fixing parts in the radial direction of the support seat, restricting the radial displacement of the two fixing parts on the support seat. The second limiting component provides a limiting surface, and the axis of the limiting surface coincides with the axis of the fixing space. The limiting surface provides a limit at the axial end of the conductor, restricting the axial displacement of the conductor and ensuring the stability of the conductor during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of the transportation cover assembly for GIL provided by an embodiment of the present invention;

[0027] Figure 2 For Figure 1 the top view;

[0028] Figure 3 It is a schematic bottom view structure diagram of the transportation cover assembly for GIL adopted by an embodiment of the present invention;

[0029] Figure 4 For Figure 1 the assembly schematic diagram of the fixing component and the support seat adopted in

[0030] Figure 5 For Figure 1 the structural schematic diagram of the first limiting component adopted in

[0031] Figure 6 For Figure 1 the cross-sectional view of the support seat adopted in

[0032] Figure 7 For Figure 1 the assembly schematic diagram of the second limiting component and the fixing component adopted in

[0033] Figure 8 For Figure 1 the cross-sectional view of the cover plate adopted in

[0034] Explanation of reference numerals:

[0035] 1. Support base; 11. Step groove; 12. Guide rail; 13. Insertion slot; 14. Support hole; 15. Support ring; 16. Reinforcement plate;

[0036] 2. Cover plate; 21. Cover body; 22. Sealing ring; 221. Sealing hole; 23. Gasket; 24. Airbag;

[0037] 3. Fixing component; 30. Fixing space; 31. Arc ring; 32. Buffer pad; 33. Connecting piece; 331. Bolt; 332. Nut; 333. Elastic piece;

[0038] 4. First limiting component; 41. Sliding seat; 411. Insertion protrusion; 412. Pulley; 42. Screw rod; 43. Sleeve;

[0039] 5. Second limiting component; 51. Connecting seat; 52. Connecting plate; 521. Mounting hole; 53. Limiting plate; 54. Pressure reducing pad. Detailed implementation manner

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restricts the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0042] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, 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.

[0043] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] It should be noted that the orientation or positional relationships indicated by terms such as "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the invention. The orientation terms "inner" and "outer" refer to the inside and outside relative to the contour of each component itself.

[0045] It should also be noted that, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", "arranged", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways, and corresponding interpretations are made for the spatial relative descriptions used here.

[0047] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, the meanings of "a plurality" and "several" are two or more, unless otherwise specifically defined.

[0048] Please refer to Figures 1 to 8 , and now the transportation cover assembly for GIL provided by the present invention will be described. The transportation cover 2 assembly for GIL includes a support seat 1, a cover plate 2, a fixing assembly 3, a first limiting assembly 4, and a second limiting assembly 5; the support seat 1 is of a ring structure and is used to connect with the GIL housing; the cover plate 2 covers the support seat 1; the fixing assembly 3 is arranged in the middle of the support seat 1, and the fixing assembly 3 includes two mutually abutting fixing parts, the two fixing parts are symmetrically arranged about the axis of the support seat 1, and a fixing space 30 for clamping and fixing the conductor in the GIL is formed by enclosing between the two fixing parts; the first limiting assembly 4 is arranged between the support seat 1 and the fixing part and is used to make the axis of the support seat 1 coincide with the axis of the fixing space 30; the second limiting assembly 5 is connected to the fixing part, and the second limiting assembly 5 is arranged on the side of the fixing part away from the support seat 1. The second limiting assembly 5 has a limiting plate 53, the plate surface of the limiting plate 53 is perpendicular to the axis of the support seat 1, and the side surface of the limiting plate 53 facing the support seat 1 forms a limiting surface that abuts against the end of the conductor, and the limiting surface restricts the axial displacement of the conductor.

[0049] It should be noted that both of the two fixing parts can be arc-shaped members. After the two fixing parts are connected, the two fixing parts abut against the conductor from both sides of the conductor to ensure the stability of the conductor during transportation.

[0050] It should be noted that the limiting surface abuts against the axial end of the conductor to prevent the conductor from moving along its own axis.

[0051] It should be noted that during the transportation of the conductor, it is set horizontally. Therefore, the axis of the support base 1 is parallel to the horizontal direction, and the second limiting component 5 and the first limiting component 4 are arranged at intervals in the horizontal direction.

[0052] Compared with the prior art, the transportation cover assembly for GIL provided in this embodiment sets the support base 1 as the fixed main body, uses the first limiting component 4 to fix the fixing component 3 at the central position of the support base 1. The fixing component 3 is in direct contact with the conductor of the GIL, and the two fixing parts fix the conductor from both sides of the GIL conductor without leaving a gap, improving the stability of the conductor transportation and reducing the installation difficulty of the conductor and the fixing component 3; the first limiting component 4 fixes the two fixing parts in the radial direction of the support base 1, restricting the radial displacement of the two fixing parts on the support base 1; the second limiting component 5 provides a limiting surface, and the axis of the limiting surface coincides with the axis of the fixing space 30. The limiting surface provides a limit at the axial end of the conductor, restricting the axial displacement of the conductor and ensuring the stability of the conductor during transportation.

[0053] In some embodiments, referring to Figure 4 and Figure 7 , the fixing part includes an arc-shaped ring 31 and a buffer pad 32 arranged on the inner wall of the arc-shaped ring 31. Fixing holes are respectively arranged at both ends of one arc-shaped ring 31, and connection holes corresponding to the fixing holes are respectively arranged at both ends of the other arc-shaped ring 31. The two arc-shaped rings 31 are fixedly connected by a connecting piece 33 passing through the fixing holes and the connection holes.

[0054] The fixing part provided in this embodiment has no complex mechanical structure. The two arc-shaped rings 31 are mutually attached and fixed by the connecting piece 33, with low operation difficulty. The buffer pad 32 is arranged on the inner wall of the arc-shaped ring 31. When fixing the conductor, the buffer pad 32 directly abuts against the conductor, reducing the pressure of the arc-shaped ring 31 on the conductor.

[0055] As another embodiment of the connection between the two arc-shaped rings 31, one end of one arc-shaped ring 31 and one end of the other arc-shaped ring 31 are hinged, the hinge axis is parallel to the up-down direction, and the other ends of the two arc-shaped rings 31 are detachably connected by bolts, with low connection difficulty.

[0056] In some embodiments, referring to Figure 7 , the connecting piece 33 includes a bolt 331 with a nut, a nut 332, and an elastic member 333. The bolt 331 sequentially passes through the corresponding fixing hole and connection hole and is connected to the nut 332; the elastic member 333 is sleeved on the outer periphery of the bolt 331, and both ends of the elastic member 333 respectively abut against the arc-shaped ring 31 and the nut. The elastic member 333 is configured with a pre-tightening force to push the nut away from the arc-shaped ring 31.

[0057] This embodiment provides an embodiment of the connecting member 33. The bolt 331 sequentially passes through the fixing hole and the connecting hole, and by screwing with the nut 332, the two arc-shaped rings 31 are fastened together, with low connection difficulty and convenient disassembly and assembly of the arc-shaped rings 31; the elastic member 333 is sleeved on the bolt 331. After the bolt 331 and the nut 332 are tightened, the elastic member 333 is squeezed and reversely pushes the two arc-shaped rings 31 to abut, improving the connection strength of the two arc-shaped rings 31.

[0058] Optionally, the elastic member 333 is a C-shaped elastic sheet. When the elastic member 34 is squeezed, the two elastic surfaces of the elastic sheet approach each other, causing the elastic member 333 to generate a pre-tightening force for reverse restoration. While the relative positions of the nut 332 and the nut remain unchanged, the elastic member 333 can only push the arc-shaped ring 31 to move towards the other arc-shaped ring 31. Of course, other elastic members such as springs can also be used for the elastic member 333, which will not be listed one by one here.

[0059] In some embodiments, refer to Figure 4 and Figure 5 , a ring-shaped stepped groove 11 is formed in the inner ring of the support seat 1. There are multiple first limiting components 4, and each first limiting component 4 includes a sliding seat 41, a screw rod 42, and a sleeve 43. The sliding seat 41 is slidably arranged in the stepped groove 11 along the circumferential direction of the support seat 1; the screw rod 42 extends along the radial direction of the support seat 1, and one end of the screw rod 42 close to the corresponding fixing part is connected to the fixing part; the sleeve 43 is arranged between the screw rod 42 and the sliding seat 41. One end of the sleeve 43 is rotatably connected to the sliding seat 41, and the rotation axis coincides with the axis of the screw rod 42. The other end of the sleeve 43 is screwed to the screw rod 42; wherein, the multiple sliding seats 41 slide synchronously, and the included angle between two adjacent sliding seats 41 is the same.

[0060] This embodiment provides an embodiment of the first limiting component 4. The multiple first limiting components 4 are evenly distributed in the support seat 1 and apply a thrust force to the fixing component 3 from all around, ensuring that the central axis of the fixing space 30 always overlaps with the axis of the support seat 1, ensuring transportation stability. The same included angle between two adjacent sliding seats 41 makes the force received by the fixing component 3 uniform, ensuring the relative fixation of itself and the support seat 1. The stepped groove 11 provides a moving track, and the screw rod 42 and the sleeve 43 can swing around the axis of the fixing space 30 as the sliding seat 41 moves, improving the installation freedom and reducing the installation difficulty during use. The sleeve 43 and the screw rod 42 are screwed together. By adjusting the screwing distance between the sleeve 43 and the screw rod 42, the overall length of the first limiting component 4 can be adjusted. When different-sized fixing components need to be replaced, only the screwing distance between the sleeve 43 and the screw rod 42 needs to be changed, so that the support seat 1 can adapt to the installation of conductors of different sizes, improving the applicable range.

[0061] In specific implementation, four sets of first limiting components 4 can be selected, and the included angle between two adjacent sliding seats 41 is 90 degrees. Three sets of first limiting components 4 can also be selected to ensure that the force received by the fixing component 3 is uniform.

[0062] In some embodiments, referring to Figure 6 , on the side where the sliding seat 41 fits against the stepped groove 11, there is a plugging protrusion 411. A plugging groove 13 is formed in the groove wall of the stepped groove 11. The plugging groove 13 is in plugging fit with the plugging protrusion 411 to limit the positioning displacement of the sliding seat 41 in the axial direction of the support seat 1; on the side of the sliding seat 41 away from the fixing part, there is a pulley, and a ring-shaped guide rail 12 is formed in the groove bottom of the stepped groove 11. The pulley is in rolling fit with the ring-shaped guide rail 12. The plugging protrusion 411 and the plugging groove 13 are in sliding plugging fit to limit the movement of the sliding seat 41 in the up and down direction, ensuring that the sliding seat 41 is always on the stepped groove 11; the guide rail 12 is in rolling fit with the pulley 412 to guide the sliding of the pulley 412.

[0063] In specific implementation, the plugging protrusion 411 is an arc-shaped protrusion, and its bending radian is the same as that of the guide rail 12.

[0064] In some embodiments, referring to Figure 4 and Figure 7 , the second limiting component 5 further includes two connecting seats 51 and two connecting plates 52. The two connecting seats 51 are respectively arranged on the sides of the two fixing parts, and the two connecting seats 51 are symmetrically arranged about the axis of the fixing space 30; the two connecting plates 52 are respectively connected to the corresponding connecting seats 51. The plate surface of the connecting plate 52 is parallel to the axial direction of the support seat 1, and the plate surfaces of the two connecting plates 52 are parallel to each other. A plurality of mounting holes 521 are formed on the plate surface of the connecting plate 52. The plurality of mounting holes 521 in the same connecting plate 52 are arranged at intervals along the axis of the fixing space 30; on the outer periphery of the limiting plate 53, there are fixing protrusions corresponding to the mounting holes 521. The fixing protrusions are selectively in plugging fit with the plurality of mounting holes 521, and the side surface of the limiting plate 53 facing the fixing component 3 forms a limiting surface.

[0065] It should be noted that a decompression pad 54 is arranged inside the limiting plate 53. The decompression pad 54 is directly in contact with the end of the conductor to improve the protection effect on the conductor.

[0066] In specific implementation, a connecting block is arranged on the outer periphery of the limiting plate 53, and a fixing protrusion is arranged on the connecting block. The fixing protrusion is in plugging fit with the mounting hole 521.

[0067] Specifically, after the fixing protrusion and the mounting hole 521 are in plugging fit, the connecting plate 52 and the limiting plate 53 can be connected into a whole through a tightening screw to improve the use strength.

[0068] Specifically, the multiple mounting holes 521 on the same connecting plate 52 are divided into two columns, and there are two fixing protrusions on the same side of the connecting block, which improves the connection stability.

[0069] For the second limiting component 5 provided in this embodiment, a limiting plate 53 is arranged at the end of the conductor. The limiting plate 53 is relatively fixed to the fixing component 3 through the connecting plate 52, which can limit the axial displacement of the conductor and improve the fixing effect on the conductor. The two connecting plates 52 are respectively arranged on the sides of the two fixing parts, which improves the support stability and ensures that the limiting plate 53 is stably supported.

[0070] In some embodiments, referring to Figure 7 , an opening can be provided in the middle of the limiting plate 53 to reduce the weight of the limiting plate 53 and lower the cost.

[0071] As another implementation manner of the second limiting component 5, it includes a moving rod slidably arranged inside the cover plate 2. There are three moving rods, which are arranged radially around the axis of the conductor. The ends of the three moving rods are respectively connected to the limiting plate 53. The included angle between two adjacent moving rods is 120°. The outer periphery of the limiting plate 53 is provided with three through holes along its own radial direction. A push rod is threadedly connected at each through hole. One end of the push rod arranged inside the limiting plate 53 is hinged with a backing plate. The backing plate is an L-shaped member, and the hinge axis is parallel to the radial direction of the conductor. By respectively threadedly matching the three push rods with the corresponding through holes, the positions of the three backing plates are changed, and the three gaskets are respectively abutted against the end and the outer periphery of the end of the conductor to clamp and fix the conductor and limit the position of the end of the conductor.

[0072] In this embodiment, strengthening rods are respectively connected between the three moving rods to make the three moving rods move synchronously. A lead screw is arranged inside the cover plate 2. The lead screw is arranged along the long axis of the conductor. The three lead screws correspond to the three moving rods. The moving rods are based on the lead screw principle and cooperate with the lead screw to move the moving rods closer to or away from the support seat 1, which is convenient to move the position of the backing plate according to the length of the conductor. In this embodiment, the backing plate is an L-shaped plate. When the backing plate abuts against the end of the conductor, the backing plate abuts against the end face and the outer periphery of the end of the conductor respectively, which improves the limiting stability.

[0073] In some embodiments, referring to,4, the support seat 1 is provided with a plurality of through support holes 14 along its own circumferential direction. The support holes 14 are used for connecting with the GIL shell. The plurality of support holes 14 are provided to improve the connection strength with the GIL shell and the transportation stability.

[0074] In some embodiments, referring to Figure 2, a support ring 15 is coaxially provided on the surface of the support base 1, and support holes 14 are distributed outside the support ring 15; a plurality of reinforcing plates 16 are also provided on the support base 1. The reinforcing plates 16 are arranged between two adjacent support holes 14 and are respectively connected to the support base 1 and the support ring 15. The top surface of the support ring 15 is higher than the upper surface of the support base 1 to protect the inside of the support base 1 and cooperate with the cover plate 2 to form a space for fixing the conductor. The arrangement of the plurality of reinforcing plates 16 can improve the support strength of the support base 1 and extend the service life.

[0075] In some embodiments, referring to Figure 2 and Figure 8 , the cover plate 2 includes an integrally formed cover body 21 and a sealing ring 22. Sealing holes 221 corresponding to the support holes 14 are provided on the sealing ring 22. A sealing groove is formed at the top of the sealing holes 221. The sealing groove communicates with the sealing holes 221, and a gasket 23 is provided in the sealing groove. The contact area between the sealing ring 22 and the support base 1 is large, and the connection between the sealing ring 22 and the support base is easy, improving the installation convenience. The cover body 21 can protect the conductor. The setting of the gasket 23 improves the connection sealing performance between the sealing ring 22 and the support base 1.

[0076] During specific implementation, the support base 1 is connected to the GIL housing through bolts. The bolts sequentially pass through the sealing holes 221 and the support holes 14 and then are connected to the housing.

[0077] Specifically, the cover body 21 is in a basin-like structure.

[0078] As an implementation manner to improve the connection sealing performance between the sealing ring 22 and the support base 1, sealing rings are simultaneously sleeved on the side walls of the sealing ring 22 and the support base 1. The sealing rings are used to block the gaps on the upper surfaces of the sealing ring 22 and the support base 1.

[0079] In some embodiments, referring to Figure 8 , the cover plate 2 further includes an airbag 24, and the airbag 24 covers the outer surface of the cover body 21. The airbag 24 can provide a second layer of protection outside the cover body 21 to prevent the cover body 21 from being directly impacted, greatly improving the compressive capacity of the cover plate 2, and thus improving the protection effect on the conductor.

[0080] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transport cover assembly for GIL, characterized in that: The invention comprises a support seat (1), a cover plate (2), a fixing assembly (3), a first limiting assembly (4) and a second limiting assembly (5); the support seat (1) is an annular structure, and the support seat (1) is used to be connected to a GIL housing; the cover plate (2) is arranged on the support seat (1); the fixing assembly (3) is arranged in the middle of the support seat (1), and the fixing assembly (3) comprises two fixing parts abutting against each other, the two fixing parts are symmetrically arranged about the axis of the support seat (1), and the two fixing parts enclose a fixing space (30) for clamping and fixing the GIL conductor; the A limiting assembly (4) is arranged between the support seat (1) and the fixing part, and is used to make the axis of the support seat (1) overlap with the axis of the fixing space (30); a second limiting assembly (5) is connected to the fixing part, and the second limiting assembly (5) is arranged on a side of the fixing part away from the support seat (1), and the second limiting assembly (5) has a limiting plate (53), the plate surface of the limiting plate (53) is perpendicular to the axis of the support seat (1), and the limiting plate (53) forms a limiting surface facing the side of the support seat (1) and abutting against the end of the conductor, and the limiting surface can limit the axial displacement of the conductor.

2. The GIL transport cover assembly according to claim 1, characterized in that: The fixing portion comprises an arcuate ring (31) and a buffer pad (32) arranged on the inner wall of the arcuate ring (31), wherein two ends of one arcuate ring (31) are respectively provided with fixing holes, and two ends of the other arcuate ring (31) are respectively provided with connecting holes corresponding to the fixing holes, and the two arcuate rings (31) are fixedly connected via a connecting piece (33) penetrating the fixing holes and the connecting holes.

3. The GIL transport cover assembly according to claim 2, characterized in that: The connecting member (33) comprises a bolt (331) with a nut, a nut (332) and an elastic member (333). The bolt (331) passes through the corresponding fixing hole and the connecting hole in sequence and is threadedly connected to the nut (332). The elastic member (333) is sleeved on the outer periphery of the bolt (331), and two ends of the elastic member (333) respectively abut against the arc ring (31) and the nut. The elastic member (333) is configured with a pre-tightening force for pushing the nut away from the arc ring (31).

4. The GIL transport cover assembly according to claim 1, characterized in that: The inner ring of the support seat (1) is formed with an annular stepped groove (11), and a plurality of first limit assemblies (4) are provided, each of which comprises: A sliding seat (41) is slidably disposed in the stepped groove (11) along the circumferential direction of the support seat (1); A screw rod (42), the screw rod (42) extending in the radial direction of the support seat (1), and one end of the screw rod (42) close to the fixing portion is connected to the fixing portion; and A sleeve (43) is disposed between the screw rod (42) and the sliding seat (41), one end of the sleeve (43) is rotatably connected to the sliding seat (41), and the rotation axis coincides with the axis of the screw rod (42), and the other end of the sleeve (43) is threadedly connected to the screw rod (42); The plurality of sliding seats (41) slide synchronously, and the angles between two adjacent sliding seats (41) are the same.

5. The GIL transport cover assembly as claimed in claim 4, characterized in that A plug-in protrusion (411) is provided on the side of the sliding seat (41) that fits the stepped groove (11); a plug-in groove (13) is provided on the groove wall of the stepped groove (11); the plug-in groove (13) and the plug-in protrusion (411) are plugged and matched to limit the displacement of the sliding seat (41) in the axial direction of the support seat (1); a pulley (412) is provided on the side of the sliding seat (41) away from the fixed part; an annular guide rail (12) is provided on the groove bottom of the stepped groove (11); the pulley (412) and the annular guide rail (12) are rollingly matched.

6. The GIL transport cover assembly according to claim 1, characterized in that: The second limiting component (5) also includes: Two connecting seats (51) are respectively arranged on the sides of the two fixing parts, and the two connecting seats (51) are symmetrically arranged about the axis of the fixing space (30); and Two connecting plates (52) are respectively connected to corresponding connecting seats (51); the plate surface of the connecting plate (52) is parallel to the axial direction of the supporting seat (1), and the plate surfaces of the two connecting plates (52) are parallel to each other; a plurality of mounting holes (521) are arranged on the plate surface of the connecting plate (52); and the plurality of mounting holes (521) in the same connecting plate (52) are arranged at intervals along the axis of the fixing space (30); The outer periphery of the limiting plate (53) is provided with fixing protrusions corresponding to the mounting holes (521), and the fixing protrusions are selectively plugged into and matched with the plurality of mounting holes (521), and the limiting plate (53) forms a limiting surface on the side facing the fixing assembly (3).

7. The GIL transport cover assembly according to claim 1, characterized in that: The support seat (1) is provided with a plurality of through support holes (14) along its circumference, and the support holes (14) are used to be connected to the GIL shell.

8. The GIL transport cover assembly according to claim 7, characterized in that: A support ring (15) is coaxially arranged on the surface of the support seat (1), and the support holes (14) are distributed on the outside of the support ring (15); a plurality of reinforcing plates (16) are also arranged on the support seat (1), and the reinforcing plates (16) are arranged between two adjacent support holes (14) and are respectively connected to the support seat (1) and the support ring (15).

9. The GIL transport cover assembly according to claim 7, characterized in that: The cover plate (2) comprises an integrally formed cover body (21) and a sealing ring (22); a sealing hole (221) is provided on the sealing ring (22) corresponding to the supporting hole (14); a sealing groove is provided at the top of the sealing hole (221); the sealing groove is communicated with the sealing hole (221); and a gasket (23) is provided in the sealing groove.

10. The GIL transport cover assembly according to claim 9, characterized in that: The cover plate (2) also includes an air bag (24), and the air bag (24) covers the outer surface of the cover body (21).

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