A CT cartridge

Abstract

The utility model provides a CT cylinder, shielding cylinder body, shielding cylinder body one end is open end, the other end is closed end, is equipped with the fixed base at open end department, is equipped with the end cover at closed end department, the fixed base and the end cover detachable connection in shielding cylinder body both ends, at least one slide groove is equipped on the fixed base inner wall, the connecting assembly for connecting external equipment is installed in the fixed base, the connecting assembly includes the mounting bush and the butt joint bush, the butt joint bush is inlayed in the mounting bush with the thread, is equipped with the sliding block with the slide groove cooperation on the mounting bush outer wall, the mounting bush outer wall inlays the fixed base inner wall, the sliding block slides along the slide groove, the butt flange is equipped with in the mounting bush end, is provided with a plurality of butt joint holes in the butt joint bush inner wall, the hole diameter of butt joint hole is from big to small and is arranged in cascade, inserts along the butt joint bush in the mounting bush, and the conductor of different diameters can be adapted butt joint hole inlayed in the butt joint bush in cascade, realizes quick assembly.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, and in particular to a CT tube. Background Technology

[0002] Gas-insulated switchgear (GIS) is a core component in high-voltage and ultra-high-voltage power systems. Due to its small footprint, excellent insulation performance, and high operational reliability, it is widely used in power engineering projects such as substations and converter stations. GIS equipment is filled with SF6 insulating gas. Through a sealed structure between the metal shell and internal components, it isolates the high-voltage conductor from the external environment. The shielding cylinder is one of its key internal components. Typically made of aluminum alloy or stainless steel and shaped into a cylindrical metal tube, it is fitted over the high-voltage conductor. Its core function is to uniformly distribute the electric field around the conductor, shield the electric field radiation from the charged conductor, and prevent gas breakdown caused by concentrated electric field, thereby preventing partial discharge and ensuring the stable operation of the GIS equipment in high-voltage environments.

[0003] In existing technologies, most GIS shielding cylinders are single cylindrical structures with an integrated design. During assembly, they need to be precisely coaxially aligned with adjacent conductors. However, in actual operation, they rely on manual visual observation combined with external tooling for positioning. This not only results in low assembly efficiency but also makes it easy for tooling positioning deviations and human operation errors to cause insufficient coaxiality between the shielding cylinder and adjacent components, which in turn causes electric field distortion, increases the risk of partial discharge, and affects the overall insulation performance of the equipment.

[0004] To address these issues, a CT tube is proposed here. Utility Model Content

[0005] In order to overcome the shortcomings of low assembly efficiency during installation of shielding cylinders in the existing technology, this utility model provides a CT cylinder.

[0006] This utility model is achieved using the following technical solution: A CT tube includes: a shielding tube body, one end of which is open and the other end is closed. A fixing seat is provided at the open end, and an end cap is provided at the closed end. The fixing seat and the end cap are detachably connected to both ends of the shielding tube body. At least one sliding groove is provided on the inner wall of the fixing seat. A connecting component for connecting external equipment is installed in the fixing seat. The connecting component includes a mounting sleeve and a mating sleeve. The mating sleeve is threaded into the mounting sleeve. A slider that mates with the sliding groove is provided on the outer peripheral wall of the mounting sleeve. The outer peripheral wall of the mounting sleeve is embedded in the inner peripheral wall of the fixing seat, and the slider slides along the sliding groove. The mounting sleeve is provided with a mating flange at its end, and the inner wall of the mating sleeve is provided with multiple mating holes, the diameter of which is arranged in a stepped manner from large to small.

[0007] As a preferred embodiment of this utility model, the inner peripheral wall of the fixing base is provided with a plurality of positioning holes arranged in a horizontal manner, and the outer peripheral wall of the mounting sleeve is provided with a pressing ball. A second spring is embedded between the pressing ball and the mounting sleeve, and the pressing ball matches the positioning hole to achieve positioning.

[0008] As a preferred embodiment of the present invention, the two ends of the slide are provided with limiting components. The limiting components include a first spring and a contact plate. One end of the first spring is connected to the contact plate, and the other end is connected to the end of the slide.

[0009] As a preferred embodiment of this utility model, the mounting sleeve and the docking sleeve are provided with adjustment holes symmetrically on the top and bottom, and an adjustment rod is movably connected in the adjustment hole. The adjustment rod extends into the docking joint and is hinged to a clamp.

[0010] As a preferred embodiment of this utility model, the shielding cylinder has an external thread on the outer peripheral wall at the open end, and a flexible sleeve is provided on one side of the mating flange. The inner peripheral wall of the flexible sleeve has an internal thread that matches the external thread, and the flexible sleeve is fitted onto the outer peripheral wall of the shielding cylinder.

[0011] As a preferred embodiment of this utility model, the shielding cylinder is provided with heat dissipation holes, which are evenly distributed on the side wall of the shielding cylinder.

[0012] As a preferred embodiment of this utility model, the outer peripheral wall of the shielding cylinder is wrapped with an insulator.

[0013] Compared with existing technologies, the advantages of this utility model are: 1. By setting a detachable fixing seat and end cap on the shielding cylinder, and installing a detachable connecting component on the fixing seat, the shielding cylinder is slowly moved when installing the mating conductor, so that the conductor is aligned with the mounting sleeve and inserted into the mating sleeve inside the mounting sleeve. Conductors of different diameters can be adapted to the mating holes arranged in a stepped pattern inside the mating sleeve, so as to achieve rapid assembly.

[0014] 2. By pressing the ball and positioning the hole, the mounting sleeve is accurately positioned in the fixed seat, improving assembly stability; the guide structure of the slide and the slider, together with the limiting component, makes the mounting sleeve slide smoothly and when it reaches the limit position, it is buffered and limited by the contact plate and the first spring to prevent overshoot.

[0015] 3. After the initial pre-positioning and installation of the conductor is completed, the clamp is tightened by rotating the adjusting rod to further secure the conductor and achieve a firm connection. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the shielding cylinder of this utility model; Figure 2 This is an overall exploded view of the present invention; Figure 3 This is a structural diagram of the mounting sleeve and the mating sleeve of this utility model; Figure 4 This is a partial structural diagram of the fixing sleeve of this utility model; Figure 5 This is an overall sectional view of the shielding cylinder of this utility model; In the diagram: 1. Shielding cylinder; 11. End cap; 12. Fixing base; 13. Heat dissipation hole; 100. Insulator; 2. Slide groove; 21. First spring; 212. Contact plate; 22. Positioning hole; 3. Mounting sleeve; 31. Connecting sleeve; 32. Connecting flange; 33. Flexible joint sleeve; 34. Sliding block; 35. Pressing ball; 351. Second spring; 4. Connecting hole; 5. Adjusting hole; 51. Adjusting rod; 52. Clamp. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Example: Please see Figures 1-5 A CT tube includes: a shielding tube body 1, one end of which is open and the other end is closed. A fixing seat 12 is provided at the open end, and an end cap 11 is provided at the closed end. The fixing seat 12 and the end cap 11 are detachably connected to both ends of the shielding tube body 1. At least one sliding groove 2 is provided on the inner wall of the fixing seat 12. A connecting component for connecting external equipment is installed in the fixing seat 12. The connecting component includes a mounting sleeve 3 and a mating sleeve 31. The mating sleeve 31 is threaded into the mounting sleeve 3. A slider 34 that cooperates with the sliding groove 2 is provided on the outer peripheral wall of the mounting sleeve 3. The outer peripheral wall of the mounting sleeve 3 is embedded in the inner peripheral wall of the fixing seat 12, and the slider 34 slides along the sliding groove 2.

[0019] In this embodiment, the shielding cylinder 1 is specifically a cylindrical structure with an open end and a closed end at its two axial ends. The open end is connected to the fixing seat 12, and the closed end is connected to the end cap 11. The fixing seat 12 and the end cap 11 are fastened to both ends of the shielding cylinder 1 with bolts. Of course, depending on the actual situation, the end cap 11 on the closed end can be removed to install the fixing seat 12, so that the connecting components can be installed at both ends, which is convenient for connecting external equipment in different directions. The inner wall of the fixing seat 12 is provided with a sliding groove 2, and multiple sliding grooves 2 can be provided. The sliding grooves 2 extend along the axial direction of the shielding cylinder 1. The function of the fixing seat 12 is a transition device, which is used to connect external equipment and the internal structure of the shielding cylinder 1. The fixing seat 12 is equipped with a connecting component, which is mainly used to stably connect external equipment, that is, conductors.

[0020] The connection components include mounting sleeve 3 and mating sleeve 31. Please refer to the following for details. Figure 3 , Figure 3 The exploded structural diagram of the connecting components shows that the mounting sleeve 3 is a hollow cylindrical structure with internal threads on its inner circumferential wall and external threads on its outer circumferential wall. The mating sleeve 31 is screwed into the internal threads of the mounting sleeve 3 through its external threads to achieve threaded connection and fixation. The outer circumferential wall of the mating sleeve 31 is tightly embedded in the inner circumferential wall of the fixing sleeve. A slider 34 is provided on the outer circumferential wall of the mating sleeve 31. The number of sliders 34 is the same as that of the slide rails and they correspond to each other. The sliders 34 are embedded in the slide groove 2 and slide along its axial direction to achieve guiding cooperation between the mounting sleeve 3 and the fixing seat 12.

[0021] The mounting sleeve 3 is provided with a docking flange 32 at its end, and the inner wall of the docking sleeve 31 is provided with a plurality of docking holes 4, the diameter of the docking holes 4 being arranged in a stepped manner from large to small.

[0022] In this embodiment, one end of the mounting sleeve 3 extends into and connects to the fixing base 12, while the other end is provided with a mating flange 32 for bolt connection with the flange of external equipment. Multiple mating holes 4 are evenly distributed on the inner wall of the mating sleeve 31, which can be used to connect conductor terminals of different specifications. See the attached document for details. Figure 3 as well as Figure 5 , Figure 5 This is a schematic diagram of the internal structure of the mating sleeve 31. The diameters of the mating holes 4 are arranged in a stepped manner from large to small to improve connection compatibility.

[0023] Specifically, the inner peripheral wall of the fixed base 12 is provided with a plurality of positioning holes 22, which are arranged in a horizontal manner. The outer peripheral wall of the mounting sleeve 3 is provided with a pressing ball 35, and a second spring 351 is embedded between the pressing ball 35 and the mounting sleeve 3. The pressing ball 35 matches the positioning hole 22 to achieve positioning.

[0024] In this embodiment, multiple positioning holes 22 are arranged laterally on the inner peripheral wall of the fixed base 12. When the ball 35 is pressed into the positioning hole 22, the axial position of the mounting sleeve 3 is locked, realizing quick positioning and fixing. When the installation depth needs to be adjusted, the ball 35 is pressed to disengage from the positioning hole 22, the slider 34 slides along the slide groove 2, and drives the mounting sleeve 3 to move axially within the fixed base 12. After adjusting to the target position, the ball is released, reset and snaps into the corresponding positioning hole 22, completing the limit.

[0025] Specifically, the slide 2 is provided with limiting components at both ends. The limiting components include a first spring 21 and a contact plate 212. One end of the first spring 21 is connected to the contact plate 212, and the other end is connected to the end of the slide 2.

[0026] In this embodiment, the function of the limiting component is to prevent the slider 34 from overshooting when sliding in the slide groove 2. The limiting component includes a first spring 21 and a contact plate 212. The first spring 21 has a contact plate 212 at its end. The contact plate 212 is correspondingly arranged at both ends of the slider 34. When the slider 34 slides along the slide groove 2 to the limit position, the contact plate 212 is compressed by the first spring 21, and the slider 34 is prevented from hitting the end of the slide groove 2 through elastic buffering.

[0027] Specifically, the mounting sleeve 3 and the docking sleeve 31 are symmetrically provided with adjustment holes 5, and an adjustment rod 51 is movably connected in the adjustment hole 5. The adjustment rod 51 extends into the docking joint and is hinged with a clamp 52.

[0028] In this embodiment, the mounting sleeve 3 and the docking sleeve 31 are provided with adjustment holes 5. The adjustment holes 5 are symmetrically arranged and their positions correspond. When the docking sleeve 31 and the mounting sleeve 3 are installed, the adjustment holes 5 are aligned. The adjustment hole 5 is specifically a threaded hole. The adjustment rod 51 provided in the adjustment sleeve is threadedly engaged with it. Rotating the adjustment rod 51 can extend and retract it in the adjustment hole 5, so that the clamp 52 locks the conductor terminal, thereby achieving a firm clamping of conductors of different diameters.

[0029] Specifically, the shielding cylinder 1 has an external thread on the outer peripheral wall at the open end, and a flexible sleeve 33 is provided on one side of the mating flange 32. The flexible sleeve 33 has an internal thread on its inner peripheral wall that matches the external thread, and the flexible sleeve 33 is fitted onto the outer peripheral wall of the shielding cylinder 1.

[0030] In this embodiment, the flexible sleeve 33 is used to protect the connection assembly. When the mating sleeve 31 and the conductor terminal are installed, the flexible sleeve 33 is put into the outer circumference of the shielding cylinder 1 and tightened by the external thread engaging with the threaded inner circumferential wall of the flexible sleeve 33. The flexible sleeve is a retractable soft silicone sleeve that can be extended and retracted to protect the connection assembly.

[0031] Specifically, the shielding cylinder 1 is provided with heat dissipation holes 13, which are evenly distributed on the side wall of the shielding cylinder 1.

[0032] The outer peripheral wall of the shielding cylinder 1 is wrapped with an insulator 100.

[0033] In this embodiment, the shielding cylinder 1 has heat dissipation holes 13 evenly distributed on its side wall to facilitate the rapid dissipation of internal heat. The outer peripheral wall of the shielding cylinder 1 is wrapped with an insulator 100 to prevent leakage.

[0034] The principle of this utility model is as follows: When installing the shielding cylinder 1, the shielding cylinder 1 is aligned with the external conductor terminal, the mounting sleeve 3 is aligned and pushed in axially. During the conductor insertion process, the conductor will enter multiple docking holes 4 in the docking sleeve 31. Conductors of different diameters can be adapted to docking holes 4 of different specifications. During installation, since the outermost part of the docking hole 4 is a large-diameter guide opening, the diameter of the docking hole 4 is arranged in a stepped manner from large to small. When the conductor is inserted, step-by-step guidance and positioning can be achieved until the conductor is completely inserted into the matching docking hole 4, achieving precise coaxial docking. During the conductor insertion process, the slider 34 on the mounting sleeve 3 slides on the slide groove 2 in the fixed seat 12. While the slider 34 slides along the slide groove 2, it drives the mounting sleeve 3 to move axially in the fixed seat 12. After adjusting to the target position, it is released, and the ball is reset and locked into the corresponding positioning hole 22 to complete the limit.

[0035] After the pre-positioning installation is completed, rotate the adjusting rod 51 to extend and retract within the adjusting hole 5, thereby tightening the clamp 52 and locking the conductor terminal, fixing the mating flange 32. Then, put the flexible sleeve 33 onto the outer circumference of the shielding cylinder 1 and tighten it by engaging the external thread with the thread on the inner circumferential wall of the flexible sleeve 33. The installation is then complete.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A CT tube, characterized in that, include: The shielding cylinder (1) has an open end and a closed end. A fixed seat (12) is provided at the open end and an end cap (11) is provided at the closed end. The fixed seat (12) and the end cap (11) are detachably connected to both ends of the shielding cylinder (1). At least one sliding groove (2) is provided on the inner wall of the fixed seat (12). A connecting component for connecting external equipment is installed in the fixed seat (12). The connecting component includes an installation sleeve (3) and a mating sleeve (31). The mating sleeve (31) is threaded into the installation sleeve (3). A slider (34) that cooperates with the sliding groove (2) is provided on the outer peripheral wall of the installation sleeve (3). The outer peripheral wall of the installation sleeve (3) is embedded in the inner peripheral wall of the fixed seat (12), and the slider (34) slides along the sliding groove (2). The mounting sleeve (3) is provided with a docking flange (32) at its end, and the inner wall of the docking sleeve (31) is provided with a plurality of docking holes (4), the diameter of the docking holes (4) being arranged in a stepped manner from large to small.

2. A CT tube according to claim 1, characterized in that: The inner peripheral wall of the fixed base (12) is provided with a plurality of positioning holes (22), which are arranged in a horizontal manner. The outer peripheral wall of the mounting sleeve (3) is provided with a pressing ball (35), and a second spring (351) is embedded between the pressing ball (35) and the mounting sleeve (3). The pressing ball (35) matches the positioning hole (22) to achieve positioning.

3. A CT tube according to claim 1, characterized in that: The slide (2) is provided with limiting components at both ends. The limiting components include a first spring (21) and a contact plate (212). One end of the first spring (21) is connected to the contact plate (212), and the other end is connected to the end of the slide (2).

4. A CT tube according to claim 1, characterized in that: The mounting sleeve (3) and the docking sleeve (31) are symmetrically provided with adjustment holes (5) on the top and bottom. An adjustment rod (51) is movably connected in the adjustment hole (5). The adjustment rod (51) extends into the docking joint and is hinged with a clamp (52).

5. A CT tube according to claim 1, characterized in that: The shielding cylinder (1) has an external thread on the outer peripheral wall at the open end, and a flexible sleeve (33) is provided on one side of the mating flange (32). The flexible sleeve (33) has an internal thread that matches the external thread on its inner peripheral wall, and the flexible sleeve (33) is fitted onto the outer peripheral wall of the shielding cylinder (1).

6. A CT tube according to claim 1, characterized in that: The shielding cylinder (1) is provided with heat dissipation holes (13) that are evenly distributed on the side wall of the shielding cylinder (1).

7. A CT tube according to claim 1, characterized in that: The outer peripheral wall of the shielding cylinder (1) is wrapped with an insulator (100).

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