Insulation shielding cover capable of being installed at ground potential and used for high-voltage end of lightning protection strain insulator

Abstract

The invention relates to an insulation shielding case capable of being installed at a ground potential for a high-voltage end of a lightning protection strain insulator. The insulation shielding case comprises an upper shield; the lower shield is arranged below the upper shield; the upper protective cover and the lower protective cover are rotatably connected through the rotating shaft connecting assembly, and a shielding cavity is formed when the upper protective cover and the lower protective cover are closed and used for wrapping a discharging structure at the high-voltage end of the lightning protection strain insulator in the shielding cavity; the iron sheet embedding structure is arranged on the outer wall of the side, close to the rotating shaft connecting assembly, of the upper protective cover; the strong magnetic mounting structure is arranged on the inner wall of the side, close to the rotating shaft connecting assembly, of the lower protective cover; after the upper protective cover and the lower protective cover are rotationally closed through the rotating shaft connecting assembly, the iron sheet embedding structure and the strong magnetic mounting structure are completely overlapped and attracted in the axial direction, and the upper protective cover and the lower protective cover are tightly closed. The insulation performance between a high-voltage end electrified part and the ground potential can be improved, the protection capability on external damage of small animals or bird nests, branches and the like is enhanced, and therefore the power supply reliability of a power distribution network is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of safety faults of distribution network overhead lines, and particularly relates to an insulating shielding cover that can be installed at ground potential for the high-voltage end of a lightning protection strain insulator. Background Art

[0002] Currently, the main cause of tripping faults in distribution network overhead lines is external damage, among which bird nesting and small animal climbing account for a relatively large proportion. Specifically, the situation of bird nesting mainly involves large birds such as magpies. Magpies are good at building nests, especially prefer to build nests at the cross arms of electric poles, and tend to build nests repeatedly at the same position within a specific environmental range. Even if power construction personnel remove the bird nest on the electric pole, the power inspection personnel will still find that the prototype of the bird nest has been rebuilt the next day. As for the situation of small animal climbing, it is mainly manifested as squirrels crossing the overhead line or snakes climbing the electric pole in search of food. Due to birds frequently building nests on the electric poles, snakes also often climb the electric poles to find food.

[0003] At the same time, most current overhead lines use insulated cables. In order to reduce the problem of lightning strike wire breakage, lightning protection strain insulators are widely used at key positions such as corner branch poles and sectional crossing poles. However, the subsequent problem is that the discharge structures at the high- and low-voltage ends of the strain insulator are in a semi-exposed state. When small animals such as squirrels or snakes climb past the umbrella skirts of the strain insulator, it is very easy to cause a short circuit in the discharge structures at the high- and low-voltage ends, thus triggering a grounding fault trip.

[0004] Based on this, an insulating shielding cover for the high-voltage end of a strain insulator that can overcome the above defects is proposed, which is used to wrap the discharge structure at the high-voltage end of the strain insulator to address the above problems.

[0005] It can be understood that the above statements only provide background technology related to the present invention and do not necessarily constitute prior art. Summary of the Invention

[0006] The object of the present invention is to provide an insulating shielding cover that can be installed at ground potential for the high-voltage end of a lightning protection strain insulator, which is used to wrap the discharge structure at the high-voltage end of the strain insulator, improve the insulation performance between the energized part at the high-voltage end and the ground potential, enhance the protection ability against external damage such as small animals or nest branches, and thus improve the reliability of power supply in the distribution network.

[0007] To achieve the above object, the present invention provides an insulating shielding cover for the high-voltage end of a lightning protection strain insulator that can be installed at ground potential, comprising: an upper shield; a lower shield disposed below the upper shield; a rotating shaft connection assembly that rotatably connects the upper shield and the lower shield, and when the two are closed, a shielding cavity is formed to wrap the discharge structure at the high-voltage end of the lightning protection strain insulator in the shielding cavity; an iron sheet inlay structure disposed on the outer wall of the upper shield near the rotating shaft connection assembly; and a strong magnetic mounting structure disposed on the inner wall of the lower shield near the rotating shaft connection assembly.

[0008] Wherein, after the upper shield and the lower shield are rotationally closed through the rotating shaft connection assembly, the iron sheet inlay structure and the strong magnetic mounting structure completely overlap and adsorb axially, so that the upper shield and the lower shield are tightly closed.

[0009] Wherein, the lightning protection strain insulator comprises: an insulator core rod, the low-voltage end of which is connected to an iron cross arm, and the high-voltage end of which is connected to a strain clamp; a lightning protection strain insulator low-voltage end discharge structure disposed at the low-voltage end of the insulator core rod; a lightning protection strain insulator high-voltage end discharge structure disposed at the high-voltage end of the insulator core rod; a strain clamp insulating cover is installed outside the strain clamp; and the insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential is installed outside the discharge structure at the high-voltage end of the lightning protection strain insulator.

[0010] Preferably, the cross section of the upper shield is in a door shape, including a door-shaped main structure, and the door-shaped main structure includes a front side plate of the upper shield and a rear side plate of the upper shield; a central position at the bottom of the front side plate of the upper shield is provided with an insulator core rod receiving opening, and a central position at the bottom of the rear side plate of the upper shield is provided with a strain clamp insulating cover receiving opening symmetric to the insulator core rod receiving opening.

[0011] Preferably, the cross section of the lower shield is in an L shape, including an L-shaped main structure, and the L-shaped main structure includes a front side plate of the lower shield and a rear side plate of the lower shield; a central position above the front side plate of the lower shield is provided with an insulator core rod groove; and a central position above the rear side plate of the lower shield is provided with a strain insulating cover groove.

[0012] Preferably, after the upper shield and the lower shield are rotationally closed through the rotating shaft connection assembly, the insulator core rod receiving opening and the insulator core rod groove are correspondingly arranged, and the two enclose a first receiving opening for clamping the insulator core rod; the strain clamp insulating cover receiving opening and the strain insulating cover groove are correspondingly arranged, and the two enclose a second receiving opening for clamping the clamp insulating cover.

[0013] Preferably, a discharge gap is provided below the first receiving opening.

[0014] Preferably, the rotating shaft connection assembly includes: a rotating shaft disposed at the top of the lower shield; a rotating shaft pressing plate having a plurality of semi-circular pressing protrusions on one working surface thereof that match the outer diameter of the rotating shaft, and the rotating shaft pressing plate is axially symmetrically distributed with first connection holes; a U-shaped rotating shaft support groove located at the top of the outer side wall of one side of the gantry main structure, the opening end of its U-shape is upwardly provided, and an arc-shaped bearing surface adapted to the diameter of the rotating shaft is provided at the opening end, and a first connection column coaxial with the first connection hole is provided on the side wall of the U-shaped rotating shaft support groove corresponding to the position of the first connection hole.

[0015] Preferably, the rotating shaft is constrained within the wrapping space formed by the semi-circular pressing protrusions and the arc-shaped bearing surface, and the rotating shaft pressing plate and the U-shaped rotating shaft support groove are axially tightly connected by fasteners passing through the first connection holes and the first connection columns.

[0016] Preferably, the upper shield further includes a flip baffle disposed on the upper shield and located at the joint when the upper shield and the lower shield are closed, for shielding the joint at the closed position of the insulating shield.

[0017] Preferably, the upper shield further includes a live installation tool operation module located at the top of the upper shield for the insertion or removal operation of the live installation tool.

[0018] In summary, compared with the prior art, the insulating shield for the high-voltage end of the lightning protection strain insulator of the present invention has at least the following advantages:

[0019] (1) The present invention is applicable to the insulation protection during power outage maintenance, and can also be used for the live installation of the ground potential on the pole, and can also meet the insulation shielding protection requirements for the high-voltage ends of the lightning protection strain insulators at the segmented crossing, corner tension and line branch positions;

[0020] (2) Based on the concept of insulating and shielding the high-voltage live part, the present invention designs a hard shield insulating inner cavity through the unique structure forming and ingenious assembly of the hard insulating material, aiming to improve the insulation performance between the high-voltage live part and the ground potential, enhance the protection ability against the damage of small animals or foreign objects such as bird nests and tree branches, and thus improve the reliability of the power supply of the distribution network;

[0021] (3) The present invention can realize the live direct installation operation on the pole without relying on the insulating boom truck, thereby simplifying the configuration of the operating personnel and tools, effectively improving the work efficiency, and reducing the equipment use cost;

[0022] (4) The present invention can flexibly expand the scope of the live operation, directly inhibit the fault tripping of the distribution network overhead line, and greatly reduce the line maintenance cost and the fault repair cost. Description of the Drawings

[0023] Figure 1 This is a schematic structural diagram of the lightning protection strain insulator of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the insulating shielding cover of the present invention;

[0025] Figure 3 This is a front structural diagram of the upper protective cover of the insulating shielding cover of the present invention;

[0026] Figure 4 This is a back structural diagram of the upper protective cover of the insulating shielding cover of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the rotating shaft pressing plate of the insulating shielding cover of the present invention;

[0028] Figure 6 This is a schematic structural diagram of the lower protective cover of the insulating shielding cover of the present invention.

[0029] Explanation of reference numerals:

[0030] 1 - Upper protective cover, 2 - Rotating shaft connection assembly, 3 - Lower protective cover, 11 - Gantry main structure, 111 - Front side plate of the upper protective cover, 112 - Rear side plate of the upper protective cover, 12 - Shielding cavity, 13 - Live installation tool operation module, 14 - U-shaped rotating shaft support groove, 141 - Arc-shaped bearing surface, 142 - First connecting column, 15 - Iron sheet inlay structure, 16 - Insulator core rod accommodating opening, 17 - Strain clamp insulating cover accommodating opening, 18 - Flipping baffle, 21 - Rotating shaft pressing plate, 22 - Working surface, 23 - Semi-circular pressing protrusion, 24 - First connecting hole, 31 - L-shaped main structure, 311 - Front side plate of the lower protective cover, 312 - Rear side plate of the lower protective cover, 32 - Insulator core rod groove, 33 - Strain insulating cover groove, 34 - Strong magnetic installation structure, 35 - Rotating shaft, 400 - Iron cross arm, 401 - Insulator core rod, 402 - Strain clamp insulating cover, 403 - Lightning protection strain insulator low-voltage end discharge structure, 404 - Lightning protection strain insulator high-voltage end discharge structure. Detailed implementation manners

[0031] The following further elaborates on the present invention by specifically describing a preferred specific embodiment in conjunction with the attached Figure 1 ~attached Figure 6 drawings.

[0032] It should be noted that the drawings are in a very simplified form and all use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the embodiments of the present invention, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0033] It should be noted that in the present invention, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes the explicitly listed elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article or device.

[0034] As Figure 1 shown, in the present invention, the lightning protection strain insulator includes: an insulator core rod 401, whose low-voltage end is connected to an iron cross arm 400 and whose high-voltage end is connected to a strain clamp; a lightning protection strain insulator low-voltage end discharge structure 403, disposed at the low-voltage end of the insulator core rod 401; a lightning protection strain insulator high-voltage end discharge structure 404, disposed at the high-voltage end of the insulator core rod 401; wherein, the strain clamp is used to fix and tension the overhead cable, which is a live part, and a strain clamp insulating cover 402 needs to be installed on its outer side.

[0035] It is worth noting that the insulating shield provided by the present invention is installed on the outer side of the lightning protection strain insulator high-voltage end discharge structure 404 to form a wrapping protection for the lightning protection strain insulator high-voltage end discharge structure 404 to prevent it from being damaged by external objects.

[0036] As Figure 2 and Figure 3 shown, the present invention provides a ground potential installable insulating shield for the high-voltage end of a lightning protection strain insulator, comprising: an upper shield 1, whose cross-section is in a door-shaped structure; a lower shield 3, whose cross-section is in an L-shaped structure, disposed below the upper shield 1; a rotating shaft connection assembly 2, which rotatably connects the upper shield 1 and the lower shield 3, and when the two are closed, a shielding cavity 12 is formed for wrapping the discharge structure at the high-voltage end of the lightning protection strain insulator in the shielding cavity 12.

[0037] Furthermore, as Figure 3 and Figure 4 shown, the upper shield 1 includes a door-shaped main structure 11, including an upper shield front side plate 111 and an upper shield rear side plate 112. A core rod receiving opening 16 with an n-shaped opening is provided at the center of the bottom of the upper shield front side plate 111, and a strain clamp insulating cover receiving opening 17 symmetric to the core rod receiving opening 16 is provided at the center of the bottom of the upper shield rear side plate 112.

[0038] Furthermore, as Figure 3 , Figure 4 and Figure 5As shown, the lower shroud 3 includes an L-shaped main structure 31, which includes a front side plate 311 and a rear side plate 312 of the lower shroud. A grooved insulator core rod 32 is provided at the center above the front side plate 311 of the lower shroud; a grooved strain insulator cover 33 is provided at the center above the rear side plate 312 of the lower shroud.

[0039] Specifically, when the upper shroud 1 and the lower shroud 3 are rotated and closed through the rotating shaft connection assembly 2, the grooved insulator core rod receiving opening 16 is correspondingly arranged with the grooved insulator core rod 32, and the two enclose to form a first receiving opening for clamping the insulator core rod 401; the grooved strain clamp insulator cover receiving opening 17 is correspondingly arranged with the grooved strain insulator cover 33, and the two enclose to form a second receiving opening for clamping the clamp insulator cover 402.

[0040] Furthermore, it is worth noting that the first receiving opening and the insulator core rod 401 are not completely tightly sealed. A discharge gap is provided below the first receiving opening for the current of the high-voltage end discharge structure 404 of the lightning protection strain insulator to be transferred and released to the low-voltage end discharge structure 403 of the lightning protection strain insulator through the discharge gap.

[0041] Furthermore, as Figure 2 、 Figure 3 、 Figure 5 and Figure 6 shown, the rotating shaft connection assembly 2 includes: a rotating shaft 35 provided at the top of the lower shroud 3; a rotating shaft pressing plate 21, on one working surface 22 of which there are a plurality of semi-circular pressing protrusions 23 matching the outer diameter of the rotating shaft 35, and the rotating shaft pressing plate 21 is axially symmetrically distributed with two first connection holes 24; a U-shaped rotating shaft support groove 14 located at the top of the outer side wall of one side of the portal main structure 11, the opening end of its U-shape is upward, and an arc-shaped bearing surface 141 matching the diameter of the rotating shaft 35 is provided at its opening end, and a coaxial first connection column 142 is provided at the position corresponding to the first connection hole 24 on the side wall of the U-shaped rotating shaft support groove 14, and a threaded structure is provided on the inner wall of the first connection column 142, which matches the threaded structure provided on the inner wall of the first connection hole 24.

[0042] Furthermore, the rotating shaft 35 is constrained within the enclosed space formed by the semi-circular pressing protrusions 23 and the arc-shaped bearing surface 141. The rotating shaft pressing plate 21 and the U-shaped rotating shaft support groove 14 are axially pressed and connected through fasteners passing through the first connection hole 24 and the first connection column 142, so as to realize the connection between the upper shroud 1 and the lower shroud 3 through the rotating shaft connection assembly 2, and can rotate around the rotating shaft 35 to realize closing or opening.

[0043] Furthermore, as Figure 3 and Figure 6As shown, the insulating shielding cover further includes: an iron sheet inlay structure 15, arranged on an outer wall of the U-shaped main structure 11 close to the U-shaped rotating shaft bracket 14; a strong magnetic mounting structure 34, arranged on an inner wall of the L-shaped main structure 31 close to the rotating shaft 35. Wherein, when the rotating shaft 35 is installed on the U-shaped rotating shaft bracket 14, and the upper shielding cover 1 and the lower shielding cover 3 are rotationally closed through the rotating shaft 35, the iron sheet inlay structure 15 and the strong magnetic mounting structure 34 are completely overlapped axially and tightly adsorbed, so that the upper shielding cover 1 and the lower shielding cover 3 are tightly closed, ensuring that the insulating shielding cover does not loosen when closed.

[0044] Further, as Figure 4 shown, the upper shielding cover 1 further includes a flipping baffle 18, arranged on the upper shielding cover 1 and located at a joint when the upper shielding cover 1 and the lower shielding cover 3 are closed. When the upper shielding cover 1 and the lower shielding cover 3 are closed, flip the flipping baffle 18 to shield the joint at the closed part of the insulating shielding cover and prevent rain from entering.

[0045] It should be noted that the upper shielding cover 1 and the lower shielding cover 3 can rotate along the rotating shaft 35 to be in an open / closed state; before installation, the upper shielding cover 1 and the lower shielding cover 3 are in an open state. When the upper shielding cover 1 is aligned with the high-voltage discharge structure, the opening side of the lower shielding cover 3 rotates along the rotating shaft 35, and then the openings of the two shielding covers are closed. After the upper shielding cover 1 and the lower shielding cover 3 are closed and cover the high-voltage discharge structure, the strong magnetic mounting structure 34 is tightly adsorbed on the iron sheet inlay structure 15, so that the insulating shielding cover with ground-potential installation at the high-voltage end of the lightning protection strain insulator is fixedly wrapped outside the high-voltage discharge structure without loosening.

[0046] Further, the upper shielding cover 1 further includes a live installation tool operation module 13, located at the top of the upper shielding cover 1, for the embedding or extraction operation of the live installation tool. Wherein, the live installation tool is embedded in the live installation tool operation module 13 to install the insulating shielding cover, and after the installation is completed, the live installation tool operation module 13 is extracted.

[0047] Further, a silicone rubber buffer layer is arranged on the inner wall of the shielding cavity 12 to completely wrap the high-voltage discharge electrode of the high-voltage discharge structure 404 of the lightning protection strain insulator at the high-voltage end and enhance the insulation effect. Wherein, the discharge structure 404 can be a discharge ring or a discharge ball.

[0048] Further, the insulating shielding cover with ground-potential installation at the high-voltage end of the lightning protection strain insulator is made of a hard insulating material and modified with additives such as weather resistance, anti-ultraviolet aging, and flame retardancy.

[0049] In summary, the present invention provides an insulating shielding cover for the high-voltage end of a lightning protection strain insulator, which can be installed at ground potential. Based on the concept of insulating and shielding high-voltage live parts, through the unique structure forming and ingenious assembly of hard insulating materials, a hard shield insulating inner cavity is designed to improve the insulation performance between the high-voltage live parts and the ground potential, enhance the protection against damage by small animals or foreign objects such as bird nests and tree branches, and thus improve the reliability of power supply in the distribution network. Moreover, the present invention can realize live installation operation directly on the pole, simplifies the configuration of operators and tools, and effectively improves the work efficiency. At the same time, the present invention can flexibly expand the scope of live working, directly suppress the fault tripping of overhead distribution lines, and greatly reduce the line maintenance cost and fault repair cost.

[0050] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. An insulating shielding cover for the high-voltage end of a lightning protection strain insulator, which can be installed at ground potential, is characterized in that, Comprising: Upper shroud; Lower shroud, disposed below the upper shroud; Rotating shaft connection assembly, which rotatably connects the upper shroud and the lower shroud, and forms a shielding cavity when they are closed, for wrapping the discharge structure at the high-voltage end of the lightning protection strain insulator in the shielding cavity; Iron sheet inlay structure, disposed on the outer wall of the upper shroud near the rotating shaft connection assembly; Strong magnetic mounting structure, disposed on the inner wall of the lower shroud near the rotating shaft connection assembly; Wherein, after the upper shroud and the lower shroud are rotated and closed through the rotating shaft connection assembly, the iron sheet inlay structure and the strong magnetic mounting structure are completely overlapped and adsorbed axially, so that the upper shroud and the lower shroud are tightly closed.

2. The insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as described in claim 1, wherein, The lightning protection strain insulator includes: Insulator core rod, its low-voltage end is connected to the iron cross arm, and its high-voltage end is connected to the strain clamp; Lightning protection strain insulator low-voltage end discharge structure, disposed at the low-voltage end of the insulator core rod; Lightning protection strain insulator high-voltage end discharge structure, disposed at the high-voltage end of the insulator core rod; A strain clamp insulating cover is installed outside the strain clamp; The ground-potential installable insulating shielding cover for the high-voltage end of the lightning protection strain insulator is installed outside the discharge structure at the high-voltage end of the lightning protection strain insulator.

3. The insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as claimed in claim 2, wherein The cross-section of the upper shroud is in a door shape, including a door-shaped main structure, and the door-shaped main structure includes a front side plate of the upper shroud and a rear side plate of the upper shroud; In the center of the bottom of the front side plate of the upper shroud, an insulator core rod receiving port is provided, and in the center of the bottom of the rear side plate of the upper shroud, a strain clamp insulating cover receiving port symmetrical to the insulator core rod receiving port is provided.

4. The insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as claimed in claim 3, wherein, The cross-section of the lower shroud is in an L shape, including an L-shaped main structure, and the L-shaped main structure includes a front side plate of the lower shroud and a rear side plate of the lower shroud; Above the center of the front side plate of the lower shroud, an insulator core rod groove is provided; Above the center of the rear side plate of the lower shroud, a strain insulating cover groove is provided.

5. The insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as claimed in claim 4, characterized in that, After the upper shroud and the lower shroud are rotated and closed through the rotating shaft connection assembly, the insulator core rod receiving port and the insulator core rod groove are correspondingly arranged, and the two enclose to form a first receiving port for clamping the insulator core rod; The strain clamp insulating cover receiving port and the strain insulating cover groove are correspondingly arranged, and the two enclose to form a second receiving port for clamping the clamp insulating cover.

6. The insulated shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as claimed in claim 5, wherein A discharge gap is provided below the first receiving port.

7. The insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as claimed in claim 4, wherein The rotating shaft connection assembly includes: Rotating shaft, disposed on the top of the lower shroud; Rotating shaft pressing plate, on one working surface of which, a plurality of semi-circular pressing protrusions matching the outer diameter of the rotating shaft are provided, and the rotating shaft pressing plate is axially symmetrically distributed with first connection holes; U-shaped rotating shaft support groove, located at the top of the outer wall on one side of the door-shaped main structure, the opening end of its U shape is upward, and an arc-shaped bearing surface adapted to the diameter of the rotating shaft is provided at its opening end, and a first connection column coaxial with the first connection hole is provided on the side wall of the U-shaped rotating shaft support groove corresponding to the position of the first connection hole.

8. The insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as claimed in claim 7, characterized in that, The rotating shaft is constrained in the wrapping space formed by the semi-circular pressing protrusions and the arc-shaped bearing surface, and the rotating shaft pressing plate and the U-shaped rotating shaft support groove are axially pressed and connected through fasteners passing through the first connection holes and the first connection columns.

9. The insulating shielding cover for the high-voltage end of a lightning-proof strain insulator that can be installed at ground potential as claimed in claim 1, characterized in that, The upper shroud further includes a flip baffle, which is disposed on the upper shroud and located at the joint when the upper shroud and the lower shroud are closed, and is used to shield the joint at the closed position of the insulation shield.

10. The insulating shielding cover for the high-voltage end of the lightning protection strain insulator that can be installed at ground potential as claimed in claim 1, characterized in that, The upper shroud further includes a live installation tool operation module, which is located at the top of the upper shroud and is used for the insertion or removal operation of the live installation tool.

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