Cable terminal towers and transmission equipment

Abstract

This application provides a cable terminal tower and a power transmission device, relating to the field of power grid technology. The cable terminal tower includes a tower body, at least one first support assembly, a connecting assembly, and a guiding assembly. The first support assembly includes at least three first support members, each used to connect to an overhead conductor. The connecting assembly includes a connecting seat and at least three connecting members. The guiding assembly includes at least two first guide lines, at least two guiding members, and at least two first suspension members. The first guide lines are connected between the overhead conductor and the connecting members. The first suspension members are detachably connected to the guiding members and are used to connect the first guide lines to guide them to the corresponding connecting members. The cable terminal tower of this application allows adjustment of the position of the first suspension members on the guiding members according to the position of the connecting members, and guides the first guide lines to the corresponding connecting members using the first suspension members, thereby improving installation efficiency.

Description

Technical Field

[0001] This application relates to the field of power grid technology, and in particular to a cable terminal tower and transmission device. Background Technology

[0002] Overhead transmission lines are power lines that use poles, insulators, and hardware (such as hanging rings, hanging plates, and clamps) to erect overhead conductors on the ground. Power cable lines are mainly laid underground, underwater, or in tunnels. The conductors used to transmit electrical energy in power cable lines are power cables. Cable termination towers primarily use cable terminations to electrically connect the overhead conductors and power cables, allowing for a safe transition of power between overhead transmission lines and power cable lines.

[0003] The cable terminal tower has three crossarms arranged at intervals on its upper and lower sides (each crossarm provides insulation support for the three-phase overhead conductors through insulators), and a platform at the bottom of the tower with three cable terminals spaced apart along the direction of the overhead conductors. The three-phase overhead conductors are connected to their respective crossarms, and the power cables extend upwards to the platform and connect to their corresponding cable terminals. The overhead conductors are electrically connected to their respective cable terminals via guide wires.

[0004] In actual installation, the routing of the guide cable is difficult to control. To solve this problem, multiple guide pipes can be installed on the tower and platform, allowing the guide cable to pass through multiple pipes and its path to be guided by the fixed routing of the pipes. However, the fixed length and angle of the guide pipes make it difficult to adapt to towers of different heights. Furthermore, the installation of the guide pipes requires significant time for adjustments to ensure the guide cable connects to the corresponding cable termination, resulting in low installation efficiency. Utility Model Content

[0005] This application provides a cable terminal tower and a power transmission device to solve the problems of long adjustment time and low installation efficiency when using a guide pipe to guide the guide wire.

[0006] On one hand, this application provides a cable termination head, including:

[0007] tower body;

[0008] At least one first support component, the first support component including at least three first support members, the at least three first support members being disposed on one side of the tower body and arranged sequentially at intervals along the height direction of the tower body, each first support member being used to connect to the overhead conductor.

[0009] A connection assembly, comprising a connection base and at least three connectors, wherein the connection base is disposed on the tower body and the at least three connectors are disposed on the connection base, and the connectors are used to electrically connect the overhead conductor and the corresponding power cable;

[0010] A guiding assembly includes at least two first guiding lines, at least two guiding members, and at least two first suspension members. The first guiding lines are connected between the overhead conductor and the connector. The guiding members are disposed on the tower body and protrude in a direction away from the tower body. Each guiding member is correspondingly disposed with a first supporting member. The first suspension members are detachably connected to the guiding members. The first suspension members are used to connect the first guiding lines to guide the first guiding lines to the corresponding connectors.

[0011] In one possible implementation, the guide is provided with a plurality of first connecting holes spaced apart along the arrangement direction of the connector, and the first suspension member is detachably connected to the first support member through any of the first connecting holes.

[0012] Alternatively, the guide may have at least one first connecting hole extending along the arrangement direction of the connector, and the first suspension member may be detachably connected to the first support member through the first connecting hole.

[0013] In one possible implementation, at least three of the connectors are spaced apart along the length of the tower body, and the projections of the two outermost connectors on the tower body are respectively located on two opposite sides of the tower body.

[0014] The guide and the corresponding connector are located on the same side of the tower body.

[0015] In one possible implementation, the guiding assembly further includes at least one second guide line and at least one second suspension member, the second guide line being connected between the overhead conductor located at the bottom and the connector, the second suspension member being detachably connected to the first support member, and the second suspension member being used to guide the second guide line to the corresponding connector.

[0016] In one possible implementation, the first support member located at the bottom is provided with a plurality of second connecting holes spaced apart along the arrangement direction of the connector, and the second suspension member is detachably connected to the first support member through any of the second connecting holes.

[0017] Alternatively, the first support member at the bottom may have at least one second connecting hole extending along the arrangement direction of the connector, and the second suspension member may be detachably connected to the first support member through the second connecting hole.

[0018] In one possible implementation, the connecting assembly further includes at least three fasteners, which are disposed on the connecting seat and are disposed in a one-to-one correspondence with the connecting member. The fasteners are used to fix the first guide line, and the first suspension member is used to guide the first guide line to the corresponding fastener.

[0019] And / or, the guide assembly further includes at least one third suspension member, the top end of which is detachably connected to the first support member located at the top, and the bottom end of which is connected to the first guide line, the first guide line being guided to the guide member via the third suspension member.

[0020] In one possible implementation, the connection assembly further includes at least three protective frames disposed on the connection base and extending downward, the protective frames having channels for the power cable to pass through;

[0021] The protective frame is provided with at least one mounting component, which is used to fix the power cable on the protective frame.

[0022] In one possible implementation, the connector is provided with at least three surge arresters, which are electrically connected to the first conductor and used for grounding.

[0023] In one possible implementation, a second support assembly is further included, which is disposed opposite to the first support assembly on both sides of the tower body. The second support assembly includes at least three second support members, which are arranged sequentially at intervals along the height direction of the tower body.

[0024] On the other hand, this application provides a power transmission device, including an overhead transmission line and a power cable line, as well as a cable terminal tower as described above, wherein the overhead conductors in the overhead transmission line and the power cables in the power cable line are electrically connected through the cable terminal tower.

[0025] The cable terminal tower and power transmission device provided in this application connect the overhead conductor and the connector by setting a first guide line on the cable terminal tower, and set a guide member on the tower body that corresponds one-to-one with the first support member. The first suspension member is detachably connected to the guide member. The position of the first suspension member on the guide member can be adjusted according to the position of the connector on the connector seat, and the first guide line is guided to the corresponding connector by the first suspension member. This helps to reduce the adjustment time when the first guide line is laid. Compared with the scheme of setting a guide tube with fixed position and angle, the method of adjusting the position of the first suspension member is more flexible, which not only helps to improve the installation efficiency, but also can be applied to tower bodies of different specifications, thus having good versatility. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0027] Figure 1 This is a front view of the cable terminal tower in the embodiments of this application;

[0028] Figure 2 for Figure 1 The right view;

[0029] Figure 3 for Figure 2 A partial structural diagram of the first guide component;

[0030] Figure 4 for Figure 2 A partial structural diagram of the second guide component;

[0031] Figure 5 for Figure 1 A partial top view of the connecting seat.

[0032] Explanation of reference numerals in the attached figures

[0033] 100: Tower body;

[0034] 200: First support assembly; 210: First support member; 211: First upper support member; 212: First middle support member; 213: First lower support member; 2131: Second connecting hole; 220: Insulating connector; 230: Third suspension member;

[0035] 300: Connection component; 310: Connection base; 320: Connector; 321: First connector; 322: Second connector; 323: Third connector; 330: Fixing component; 331: First fixing component; 332: Second fixing component; 333: Third fixing component; 340: Surge arrester; 350: Protective frame; 360: Mounting component;

[0036] 400: Power cable; 410: First power cable; 420: Second power cable; 430: Third power cable; 440: Protective conduit;

[0037] 500: Guide component; 510: First guide line; 511: First upper guide line; 512: First lower guide line; 520: Guide element; 521: First guide element; 5211: First connecting hole; 522: Second guide element; 530: First suspension element; 531: First upper suspension element; 532: First lower suspension element; 540: Second guide line; 550: Second suspension element;

[0038] 600: Second support component; 610: Second support element;

[0039] 700: Overhead conductor; 710: First overhead conductor; 720: Second overhead conductor; 730: Third overhead conductor.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] The terms "first," "second," "third," "fourth," etc., used in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0045] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0046] In existing technology, cable terminal towers have three crossarms spaced vertically on the tower body, each crossarm providing separate insulation support for the three-phase overhead conductors via insulators. A platform is located at the bottom of the tower, on which three cable terminals are installed, spaced apart along the extension direction of the overhead conductors. The three-phase overhead conductors are connected to their respective crossarms. After the power cable extends upward to the platform, it connects to the corresponding cable terminal, and the overhead conductors are electrically connected to the corresponding cable terminals via guide wires.

[0047] In actual installation, controlling the routing of the guide cable is difficult. To solve this problem, multiple guide pipes can be installed on the tower and platform, allowing the guide cable to pass through these pipes and using their fixed routing to regulate its path. However, the length and angle of the guide pipes are fixed, making it difficult to adapt to towers of different heights. Furthermore, installing the guide pipes requires significant time for adjustments to ensure the guide cable connects to the corresponding cable terminations, thus increasing the installation workload.

[0048] To address the aforementioned technical problems, one or more embodiments of this application provide a cable terminal tower and a power transmission device. The cable terminal tower will be described below with reference to the accompanying drawings.

[0049] The cable terminal tower of this application embodiment includes a tower body 100, at least one first support component 200, a connecting component 300, and a guiding component 500.

[0050] The first support assembly 200 includes at least three first support members 210, which are disposed on one side of the tower body 100 and arranged at intervals along the height direction of the tower body 100. Each first support member 210 is used to connect to the overhead conductor 700. The connection assembly 300 includes a connection seat 310 and at least three connectors 320. The connection seat 310 is disposed on the tower body 100, and the at least three connectors 320 are disposed on the connection seat 310. The connectors 320 are used to electrically connect the overhead conductor 700 and the corresponding power cable 400.

[0051] The guiding assembly 500 includes at least two first guide lines 510, at least two guide members 520, and at least two first suspension members 530. The first guide lines 510 are connected between the overhead conductor 700 and the connector 320. The guide members 520 are disposed on the tower body 100 and protrude in a direction away from the tower body 100. The guide members 520 are correspondingly disposed with the first support members 210. The first suspension members 530 are detachably connected to the guide members 520. The first suspension members 530 are used to connect the first guide lines 510 to guide the first guide lines 510 to the corresponding connectors 320.

[0052] The cable terminal tower of this application embodiment connects the overhead conductor 700 and the connector 320 by setting a first guide line 510, and sets a guide 520 on the tower body 100 that corresponds one-to-one with the first support 210. The first suspension member 530 is detachably connected to the guide 520. The position of the first suspension member 530 on the guide 520 can be adjusted according to the position of the connector 320 on the connector 310. The first guide line 510 is guided to the corresponding connector 320 by the first suspension member 530, which helps to reduce the adjustment time when the first guide line 510 is laid. Compared with the scheme of setting a guide tube with fixed position and angle, the method of adjusting the position of the first suspension member 530 is more flexible, which not only helps to improve installation efficiency, but also can be applied to tower bodies 100 of different specifications, thus having good versatility.

[0053] An exemplary structure of the cable terminal tower in this application is as follows: Figure 1 and Figure 2 As shown, to facilitate the connection of each overhead conductor 700 to the corresponding first support member 210, an insulating connector 220 is provided on each first support member 210. The insulating connector 220 can be a conductor tension string, with one end connected to the overhead conductor 700 and the other end connected to the first support member 210, thereby connecting the overhead conductor 700 to the corresponding first support member 210.

[0054] For ease of description, the first support member 210 will be referred to as the first upper support member 211, the first middle support member 212, and the first lower support member 213 from top to bottom. The overhead conductor 700 connected to the first upper support member 211 will be referred to as the first overhead conductor 710, the overhead conductor 700 connected to the first middle support member 212 will be referred to as the second overhead conductor 720, and the overhead conductor 700 connected to the first lower support member 213 will be referred to as the third overhead conductor 730. The guide member 520 corresponding to the first support member 210 will be referred to as the first guide member 521, and the guide member 520 corresponding to the second support member 610 will be referred to as the second guide member 522.

[0055] Furthermore, the first guide wire 510 and connector 320 electrically connected to the first overhead line are respectively referred to as the first upper guide wire 511 and the first connector 321, and the first guide wire 510 and connector 320 electrically connected to the second overhead conductor 720 are respectively referred to as the first lower guide wire 512 and the second connector 322. The first suspension member 530 on the first guide member 521 is referred to as the first upper suspension member 531, and the first suspension member 532 on the second guide member 522 is referred to as the first lower suspension member 532.

[0056] It should be noted that the number of the first support member 210, the first guide line 510, the connector 320 and the guide member 520 in the embodiments of this application can be increased adaptively, as long as the usage requirements are met. For example, the increased number can be used as a spare structure.

[0057] The tower body 100 in this embodiment adopts a frame structure, and the bottom cross-sectional area of ​​the tower body 100 is relatively large to improve its stability in the installed state. The length direction of the tower body 100 is parallel to the extension direction of the overhead conductor 700, and the width direction of the tower body 100 is perpendicular to the length direction.

[0058] like Figure 1 and Figure 2 As shown, the first upper support 211, the first middle support 212, the first lower support 213, and the connecting seat 310 are all located on the same side along the length of the tower body 100. The first upper support 211, the first middle support 212, and the first lower support 213 also employ a frame structure. For example, the projection of the first support 210 along the length of the tower body 100 is triangular, and the cross-sectional area of ​​the first support 210 gradually decreases along the direction away from the tower body 100.

[0059] Here, the triangular projection structure itself possesses geometric stability, allowing the first support member 210 to more evenly distribute the tension of the overhead conductor 700 to the tower body 100, thereby improving its structural stability. Furthermore, the design of the first support member 210's cross-sectional area gradually decreasing away from the tower body 100, with a larger cross-sectional area closer to the tower body 100, helps ensure the connection strength between the guide member 520 and the tower body 100, while the area further away from the tower body 100 experiences less stress. This reduction in area also helps to reduce the overall weight.

[0060] In the embodiments of this application, such as Figure 2 As shown, at least three connectors 320 are spaced apart along the length of the tower body 100. The projections of the two outermost connectors 320 on the tower body 100 are located on two opposite sides of the tower body 100, and the guide 520 and the corresponding connector 320 are located on the same side of the tower body 100.

[0061] Here, by setting the guide 520 and the corresponding connector 320 on the same side of the tower body 100, the path of the first guide line 510 from the overhead conductor 700 through the guide 520 and the first suspension member 530 to the connector 320 is more direct. This helps to reduce detours or crossings across both sides of the tower body 100, reduce the bending of the guide line, and at the same time, it makes it easier for installers to intuitively control the wiring path of the first guide line 510, thereby improving wiring efficiency.

[0062] As an example of layout, such as Figure 2 As shown, the first connector 321 and the second connector 322 are located on both sides of the third connector 323, which is located below the first lower support 213. The first guide 521 and the second guide 522 are disposed on two opposite sides of the tower body 100 in the width direction and protrude outward from the tower body 100 respectively. The first guide 521 and the first connector 321 are located on the same side of the tower body 100, and the second guide 522 and the second connector 322 are located on the same side of the tower body 100.

[0063] like Figure 2 As shown, the cross-sectional area of ​​each guide 520 gradually decreases along the direction away from the tower body 100. This results in a larger cross-sectional area for the portion of the guide 520 closer to the tower body 100, which helps ensure the connection strength between the guide 520 and the tower body 100, while the portion farther from the tower body 100 experiences less stress, further reducing the overall weight. Additionally, the projection of the guide 520 along the length of the tower body 100 is triangular, which can also utilize the good stability of the triangular structure to enhance its structural stability. In specific implementations, the guide 520 can also adopt a frame structure to facilitate installation on the tower body 100 and provide better usability.

[0064] In this embodiment, the first upper suspension member 531 and the first lower suspension member 532 can be suspended tension strings. The top end of the suspended tension string is detachably connected to the corresponding guide member 520 by fasteners such as bolts, pins or buckles, and the bottom end is connected to the corresponding first guide line 510 by tension clamps.

[0065] In one possible implementation, the guide 520 is provided with a plurality of first connecting holes 5211 spaced apart along the arrangement direction of the connector 320. The first suspension member 530 is connected to the first support member 210 through any of the first connecting holes 5211. By spaced the first connecting holes 5211 along the arrangement direction of the connector 320, the adjustment direction of the first suspension member 530 can be kept consistent with the distribution direction of the connector 320. The connection point of the first suspension member 530 on the first support member 210 can be adjusted according to the specific position of different connectors 320, which helps to reduce the redundant length of the first guide line 510 and improves installation efficiency.

[0066] Among them, multiple first connecting holes 5211 are located on the side of the guide 520 facing the connecting seat 310, such as Figure 3 The diagram illustrates a frame with the first guide 521 facing the connector 310, and multiple first connection holes 5211 located at the bottom of the frame. The number of first connection holes 5211 can be determined according to usage requirements.

[0067] In specific operation, the U-shaped hanging ring at the top of the first suspension component 530 can be inserted into any of the first connecting holes 5211, and then the bolts and nuts that pass through the U-shaped hanging ring and the corresponding connecting holes are tightened. When disassembling, simply loosen the nuts to separate the components, and then move the U-shaped hanging ring to the target first connecting hole 5211 and tighten it again. This facilitates the installation and position adjustment of the first suspension component 530.

[0068] In one possible implementation, the guide member 520 is provided with at least one first connecting hole 5211 extending along the arrangement direction of the connector 320, and the first suspension member 530 is connected to the first support member 210 through the first connecting hole 5211. The first connecting hole 5211 extends continuously along the arrangement direction of the connector 320, allowing the first suspension member 530 to be connected and adjusted at any position within the first connecting hole 5211. This allows for flexible adjustment of the installation position of the first suspension member 530 according to the actual position of the connector 320 and the wiring requirements of the first guide line 510, adapting to different wiring scenarios and effectively solving the problem that fixed positions are difficult to adapt to diverse installation needs.

[0069] The first connecting hole 5211 is located on the side of the guide 520 facing the connecting seat 310, and also at the bottom of the frame. In specific operation, the U-shaped hanging ring at the top of the first suspension member 530 can be inserted into any position of the first connecting hole 5211, and then the bolt and nut through the U-shaped hanging ring and the corresponding first connecting hole 5211 are tightened. When disassembling, simply loosen the nut to separate, then move the U-shaped hanging ring to the target position of the connecting hole and tighten it again, thus facilitating the installation and position adjustment of the first suspension member 530.

[0070] Furthermore, the first suspension member 530 and the connector 320 are vertically aligned vertically along the height of the tower body 100. Specifically, the first upper suspension member 531 is located above the first connector, and the first lower suspension member 532 is located above the second connector 322. This arrangement helps reduce the bending and detours of the first guide wire 510, thereby shortening its wiring length. Additionally, it provides a clear reference for adjusting the position of the first suspension member 530. Installers can directly position the first suspension member 530 using the height of the connector 320 as a reference, thus reducing the time spent on repeated adjustments and improving installation efficiency.

[0071] like Figure 2 As shown, the guide assembly 500 also includes at least one third suspension member 230, the top end of which is detachably connected to the first support member 210 located at the top, and the bottom end of which is connected to the first guide line 510, which is guided to the guide member 520 via the third suspension member 230.

[0072] In practical implementation, the third suspension member 230 is connected between the first upper support member 211 and the first upper guide line 511. The third suspension member 230 is an insulator string for side-phase jumpers, which not only helps prevent the first upper guide line 511 from discharging to the tower body 100, but also helps prevent the first guide line 510 from swaying or deforming due to external forces such as wind and snow, thereby ensuring a safe distance between the first upper guide line 511 and the tower body. In addition, the third suspension member 230 can increase weight and stability, suppressing the swaying of the first guide line 510 with the wind. It is understood that, depending on the usage requirements, a third suspension member 230 can also be installed between the first middle support member 212 and the first lower guide line 512.

[0073] In one possible implementation, the guide assembly 500 further includes at least one second guide line 540 and at least one second suspension member 550, the second guide line 540 being connected between the overhead conductor 700 at the bottom and the connector 320, the second suspension member 550 being detachably connected to the first support member 210, and the second suspension member 550 being used to guide the second guide line 540 to the corresponding connector 320.

[0074] For the overhead conductor 700 located at the bottom, a second guide line 540 and a second suspension component 550 are separately provided. These can cooperate with the first guide line 510 to ensure that overhead conductors 700 at different heights and positions on the tower 100 can be connected to the connector 320 through the corresponding guide component 500, thereby improving the wiring effect of the first guide line 510 and the second guide line 540. Figure 2 As shown, the second guide wire 540 is connected to the third overhead conductor 730 and the third connector 323. The second suspension member 550 is also a suspended insulator string.

[0075] In one possible implementation, the first support member 210 at the bottom is provided with a plurality of second connecting holes 2131 arranged at intervals along the arrangement direction of the connector 320, and the second suspension member 550 is connected to the first support member 210 through any of the second connecting holes 2131.

[0076] like Figure 4As shown, multiple second connecting holes 2131 are located at the bottom of the frame on the side of the first lower support facing the connecting seat 310. By spaced the second connecting holes 2131 along the arrangement direction of the connector 320, the adjustment direction of the second suspension member 550 can be kept consistent with the distribution direction of the connector 320. The connection point of the second suspension member 550 on the first lower support member 213 can be adjusted according to the specific position of the third connector 323, which helps reduce the redundant length of the second guide line 540 and improves installation efficiency.

[0077] In one possible implementation, the first support member 210 at the bottom is provided with at least one second connecting hole 2131 extending along the arrangement direction of the connector 320, and the second suspension member 550 is connected to the first support member 210 through the second connecting hole 2131. The second connecting hole 2131 is located at the bottom of the side frame of the first lower support member 213 facing the connector 310.

[0078] The second suspension member 550 extends continuously along the arrangement direction of the connector 320 through the second connecting hole 2131, allowing it to be connected and adjusted at any position within the second connecting hole 2131. This facilitates flexible adjustment of the installation position of the second suspension member 550 according to the actual position of the third connector 323 and the wiring requirements of the second guide line 540, adapting to different wiring scenarios.

[0079] In the embodiments of this application, such as Figure 1 and Figure 5 As shown, the connecting assembly 300 also includes at least three fasteners 330. The fasteners 330 are disposed on the connecting seat 310. The fasteners 330 and the connecting members 320 are disposed in a one-to-one correspondence. The fasteners 330 are used to fix the first guide line 510. The first suspension member 530 is used to guide the first guide line 510 to the corresponding fastener 330.

[0080] Here, the fasteners 330 and connectors 320 are configured in a one-to-one correspondence, determining the fixing point of each first guide wire 510 on the connector 310. Combined with the guiding function of the first suspension member 530, this ensures that the path of the first guide wire 510 from its corresponding suspension member 530 to the fastener 330 matches the position of the corresponding connector 320, thus preventing multiple guide wires from crossing or misaligning. The fastener 330 here can be a suspended tension string, with its bottom end connected to the connector 310 and its top end connected to the corresponding guide wire.

[0081] For ease of description, the fixing member 330 located on the side of the first connector 321 will be referred to as the first fixing member 331, the fixing member 330 located on the side of the second connector 322 will be referred to as the second fixing member 332, and the fixing member located on the side of the third connector 323 will be referred to as the third fixing member 333. Specifically, the first fixing member 331 is used to fix the first upper guide line 511, the second fixing member 332 is used to fix the first lower guide line 512, and the third fixing member 333 is used to fix the second guide line 540.

[0082] In this embodiment, the first overhead conductor 710 is connected to the first upper support 211 via an insulating connector 220. The top end of the first upper guide wire 511 is electrically connected to the first overhead conductor 710, guided to the first fixing member 331 via the first upper suspension member 531, and connected to the first connector 321. The second overhead conductor 720 is connected to the first middle support 212 via an insulating connector 220. The top end of the first lower guide wire 512 is electrically connected to the second overhead conductor 720, guided to the second fixing member 332 via the first lower suspension member 532, and connected to the second connector 322. The third overhead conductor 730 is connected to the first lower support 213 via an insulating connector 220. The top end of the second guide wire 540 is electrically connected to the third overhead conductor 730, guided to the third fixing member 333 via the second suspension member 550, and connected to the third connector 323.

[0083] like Figure 2 As shown in the figure, the spatial wiring of the three guide lines in this embodiment does not interfere with each other, and the wiring path is simple, which is not only easy to install but also easy to maintain and replace.

[0084] In one possible implementation, such as Figure 1 and Figure 2 As shown, the connection assembly 300 also includes at least three protective frames 350, which are disposed on the connection base 310 and extend downward. Each protective frame 350 has a channel through which the power cable 400 passes. At least one mounting member 360 is provided on the protective frame 350 for securing the power cable 400 to the protective frame 350.

[0085] The channel structure of the protective frame 350 not only clearly defines the installation path of each power cable 400, but also provides protection for the power cables 400, effectively isolating different power cables 400 and preventing them from tangling or interfering with each other. The mounting component 360 can provide appropriate clamping force according to the diameter and material characteristics of the cable, fixing the cable to the protective frame 350 and reducing the loosening or displacement of the power cables 400 caused by vibration.

[0086] In practical implementation, the protective frame 350 can also adopt a frame structure, which helps to control the overall weight while meeting the usage requirements. In addition, multiple mounting components 360 are arranged at intervals along the height direction of the protective frame 350 to further improve the fixation effect of the power cable 400 on the protective frame 350. The mounting components 360 can be cable clamps, straps, fixing brackets, etc.

[0087] For ease of description, the power cable 400 electrically connected to the first upper guide line 511 via the first connector 321 is referred to as the first power cable 410, the power cable 400 electrically connected to the first lower guide line 512 via the second connector 322 is referred to as the second power cable 420, and the power cable 400 electrically connected to the second lower guide line 512 via the third connector 323 is referred to as the third power cable 430.

[0088] In this embodiment, the connector 320 is a cable termination, which can be a product of the prior art, thereby electrically connecting the overhead conductor 700 to the corresponding power cable 400. Additionally, as... Figure 2 As shown, a cable protection pipe 440 is also provided at the bottom of the power cable 400 extending out of the ground to further improve the protection effect of the power cable 400.

[0089] like Figure 1 and Figure 3 As shown, at least three surge arresters 340 are provided on the connector 310. The surge arresters 340 are electrically connected to the first guide wire 510 and are used for grounding. When the first guide wire 510 is overvoltaged due to a lightning strike, the surge arresters 340 connected to it can safely conduct the overcurrent to the ground through the grounding terminal, fundamentally preventing the transformer, cable head and other equipment connected to the guide wire from being damaged by overvoltage.

[0090] like Figure 1 As shown in the figure, the cable terminal tower in this embodiment of the application also includes a second support component 600. The second support component 600 and the first support component 200 are disposed opposite to each other on both sides of the tower body 100. The second support component 600 includes at least three second support members 610, which are arranged sequentially at intervals along the height direction of the tower body 100.

[0091] By installing a second support assembly 600 on the tower body 100, the structural utilization rate of the tower body 100 is improved. The second support member 610 in the second support assembly 600 can be connected to the overhead conductor 700 on the other side of the tower body through a tension conductor, enabling the cable terminal tower to be used in a double-circuit power transmission system. In specific implementation, the first support members 210 on both sides can also be arranged symmetrically with the second support member 610, which helps to improve structural stability.

[0092] This application also provides a power transmission device, including an overhead transmission line and a power cable line, as well as a cable terminal tower as in any of the above embodiments, wherein the overhead conductor 700 in the overhead transmission line and the power cable 400 in the power cable line are electrically connected through the cable terminal tower.

[0093] Overhead transmission lines are power lines that use poles, insulators, and fittings (such as hanging rings, hanging plates, and wire clamps) to erect overhead conductors 700 on the ground. Power cable lines are mainly laid underground, underwater, or in tunnels. The conductor used to transmit electrical energy in power cable lines is power cable 400.

[0094] The power transmission device of this application embodiment realizes the electrical connection of the two lines through the cable terminal tower, which can take advantage of the advantages of both overhead power transmission lines and power cable 400 lines, and make the best use of their strengths and avoid their weaknesses, thereby reducing the impact of the environment on the overall line.

[0095] In addition, the design of overhead transmission lines, 400 power cables and cable terminal towers, by leveraging the complementary advantages of different transmission methods, achieves comprehensive optimization in terms of scenario adaptability, safety, economy and operation and maintenance flexibility, making it a reliable solution for complex lines in cross-regional and multi-environment environments.

[0096] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only.

[0097] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A cable termination tower, characterized by include: Tower (100); At least one first support assembly (200) includes at least three first support members (210), which are disposed on one side of the tower body (100) and are arranged at intervals along the height direction of the tower body (100). Each first support member (210) is used to connect to the overhead conductor (700). A connection assembly (300) includes a connection base (310) and at least three connectors (320). The connection base (310) is disposed on the tower body (100), and the at least three connectors (320) are disposed on the connection base (310). The connectors (320) are used to electrically connect the overhead conductor (700) and the corresponding power cable (400). A guide assembly (500) includes at least two first guide lines (510), at least two guide members (520), and at least two first suspension members (530). The first guide lines (510) are connected between the overhead conductor (700) and the connector (320). The guide members (520) are disposed on the tower body (100) and protrude in a direction away from the tower body (100). The guide members (520) are disposed one-to-one with the first support members (210). The first suspension members (530) are detachably connected to the guide members (520). The first suspension members (530) are used to connect the first guide lines (510) to guide the first guide lines (510) to the corresponding connectors (320).

2. The cable termination tower of claim 1, wherein, The guide (520) is provided with a plurality of first connecting holes (5211) arranged at intervals along the arrangement direction of the connector (320), and the first suspension (530) is detachably connected to the first support (210) through any of the first connecting holes (5211). Alternatively, the guide (520) may have at least one first connection hole (5211) extending along the arrangement direction of the connector (320), and the first suspension member (530) may be detachably connected to the first support member (210) through the first connection hole (5211).

3. The cable termination tower of claim 1, wherein, At least three of the connectors (320) are spaced apart along the length of the tower body (100), and the projections of the two outermost connectors (320) on the tower body (100) are respectively located on two opposite sides of the tower body (100); The guide (520) and the corresponding connector (320) are located on the same side of the tower body (100).

4. The cable termination tower of claim 3, wherein, The guide assembly (500) further includes at least one second guide line (540) and at least one second suspension member (550), the second guide line (540) being connected between the overhead conductor (700) located at the bottom and the connector (320), the second suspension member (550) being detachably connected to the first support member (210), and the second suspension member (550) being used to guide the second guide line (540) to the corresponding connector (320).

5. The cable termination tower of claim 4, wherein, The first support member (210) located at the bottom is provided with a plurality of second connecting holes (2131) arranged at intervals along the arrangement direction of the connector (320), and the second suspension member (550) is detachably connected to the first support member (210) through any of the second connecting holes (2131); Alternatively, the first support member (210) at the bottom is provided with at least one second connection hole (2131) extending along the arrangement direction of the connector (320), and the second suspension member (550) is connected to the first support member (210) through the second connection hole (2131).

6. The cable termination tower according to any one of claims 1 to 5, characterized in that The connecting assembly (300) further includes at least three fasteners (330), which are disposed on the connecting seat (310). The fasteners (330) are disposed one-to-one with the connecting members (320). The fasteners (330) are used to fix the first guide line (510), and the first suspension member (530) is used to guide the first guide line (510) to the corresponding fastener (330). And / or, the guide assembly (500) further includes at least one third suspension member (230), the top end of which is detachably connected to the first support member (210) located at the top, and the bottom end of which is connected to the first guide line (510), the first guide line (510) being guided to the guide member (520) via the third suspension member (230).

7. The cable termination tower according to any one of claims 1 to 5, characterized in that The connection assembly (300) also includes at least three protective frames (350), which are disposed on the connection base (310) and extend downward, and the protective frames (350) have channels for the power cable (400) to pass through. The protective frame (350) is provided with at least one mounting member (360) for fixing the power cable (400) on the protective frame (350).

8. The cable termination tower of any one of claims 1 to 5, wherein, At least three surge arresters (340) are provided on the connector (310). The surge arresters (340) are electrically connected to the first guide line (510) and are used for grounding.

9. The cable terminal tower according to any one of claims 1 to 5, characterized in that, It also includes a second support assembly (600), which is disposed opposite to the first support assembly (200) on both sides of the tower body (100). The second support assembly (600) includes at least three second support members (610), which are arranged at intervals along the height direction of the tower body (100).

10. A power transmission device, characterized in that, It includes overhead transmission lines and power cable lines, as well as a cable terminal tower according to any one of claims 1 to 9, wherein the overhead conductor (700) in the overhead transmission line and the power cable (400) in the power cable line are electrically connected through the cable terminal tower.

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