narrow base tension tower

Abstract

The application relates to a narrow-base strain tower, which comprises a tower body structure and an insulator assembly. The tower body structure comprises three steel frame structures and four columns which are conically and cylindrically overlapped and extended. The three steel frame structures are connected to the first height, the second height and the third height of the columns along the extending direction of the columns, and the four columns are overlapped on the steel frame structures along the circumferential direction of the steel frame structures. The three steel frame structures are respectively connected with the insulator assembly, and are used for connecting the first phase conductor, the second phase conductor and the third phase conductor through the insulator assembly. The narrow-base strain tower cancels the cross arms which are suspended on the two sides of the tower body structure in the related art, so that the corridor width of the power transmission line can be greatly reduced. In addition, the steel frame structures are arranged at intervals along the extending direction of the columns, so that the conductors can be vertically arranged along the height direction of the tower body structure, and the overall width of the narrow-base strain tower can be reduced, so that the construction condition in the crowded corridor can be met.

Description

Technical Field

[0001] This application relates to the field of power engineering technology, and in particular to a narrow-base tension tower. Background Technology

[0002] With the development of power engineering technology, transmission towers for suspending conductors have emerged.

[0003] Traditional overhead power transmission towers typically consist of a tower body and crossarms. The crossarms are cantilevered and fixed to the tower body to suspend the conductors. The length of the crossarms and the spacing between layers are determined by the electrical clearance, while the width of the transmission line corridor is controlled by the distance between the conductors on the left and right sides.

[0004] However, the traditional crossarm arrangement of transmission towers results in a wider corridor and a larger base opening, leading to a larger footprint. Therefore, traditional transmission towers are limited in their use in congested corridor areas, such as those in economically developed regions, and cannot meet the requirements for construction in such areas. Summary of the Invention

[0005] Therefore, it is necessary to provide a narrow-base tension tower to address the problem that traditional transmission towers cannot meet the requirements for construction in congested corridor areas.

[0006] This application provides a narrow-base tension tower, including a tower body structure and an insulator assembly. The tower body structure includes three steel frame structures and four columns that extend and overlap each other in a conical shape. The three steel frame structures are respectively connected to the columns at a first height, a second height, and a third height along their extension direction. The four columns overlap the steel frame structures along their circumferential direction. Each of the three steel frame structures is connected to the insulator assembly, and the insulator assembly is used to connect the first phase conductor, the second phase conductor, and the third phase conductor, respectively.

[0007] In one embodiment, the three steel frame structures are each provided with a first attachment point, a second attachment point, and a third attachment point. The insulator assembly includes a first tension insulator, a second tension insulator, and a supporting insulator. The first attachment point, the second attachment point, and the third attachment point are respectively used to connect the first tension insulator, the second tension insulator, and the supporting insulator.

[0008] In one embodiment, the first tension insulator and the second tension insulator are arranged at an angle and are each used to connect the conductor. The supporting insulator is disposed between the first tension insulator and the second tension insulator and is used to hang jumpers. The jumpers are used to connect the conductors on both sides.

[0009] In one embodiment, the steel frame structure includes four steel bars connected end to end. The first and second attachment points are respectively located on two steel bars on opposite sides, and the first and second tension insulators are set at an angle to the same side. The supporting insulator is connected to the other two steel bars and is located on the steel bars on the same side.

[0010] In one embodiment, the steel frame structure further includes a hanging plate structure, and each of the first hanging point and the second hanging point is provided with the hanging plate structure. The two hanging plate structures are used to fix the first insulator and the second insulator, respectively.

[0011] In one embodiment, the supporting insulator is directly fixed to the side of the steel bar.

[0012] In one embodiment, the steel frame structure is provided at a fourth height along the extension direction of the column, and the four steel frame structures are spaced apart along the extension direction of the column.

[0013] In one embodiment, the top of the narrow-base tension tower also includes a ground wire support for mounting a ground wire.

[0014] In one embodiment, the width of the top of the tower structure is 1.5 meters to 2.5 meters.

[0015] In one embodiment, the base of the tower structure has a width of 2.5 meters to 3.5 meters.

[0016] The aforementioned narrow-base tension tower, by setting steel frame structures at the first, second, and third heights of the column, eliminates the need for crossarms that cantilevered on both sides of the tower structure in related technologies, thus significantly reducing the width of the transmission line corridor. In addition, since the steel frame structure is spaced along the extension direction of the column, the conductors that were originally arranged on both sides can be arranged vertically along the height direction of the tower structure, which also helps to reduce the overall width of the narrow-base tension tower, thereby meeting the conditions for construction in congested corridor areas. Attached Figure Description

[0017] Figure 1 This is a top view of a narrow-base tension tower.

[0018] Figure 2 for Figure 1 The right view.

[0019] Explanation of icon numbers

[0020] 10. Narrow-base tension tower; 20. First phase conductor; 30. Second phase conductor; 40. Third phase conductor; 50. Jumper wire; 100. Tower structure; 110. Steel frame structure; 111. Steel bar; 112. Hanging plate structure; 120. Column; 210. First tension insulator; 220. Second tension insulator; 230. Support insulator; 300. Ground wire bracket. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0022] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this application.

[0023] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0027] See Figure 1 , Figure 1 A top view of a narrow-base tension tower 10 according to an embodiment of this application is shown. The narrow-base tension tower 10 provided in an embodiment of this application includes a tower body structure 100 and insulator assemblies. The tower body structure 100 includes three steel frame structures 110 and four columns 120 extending and overlapping each other in a conical shape. The three steel frame structures 110 are respectively connected to the columns 120 at a first height, a second height, and a third height along their extension direction. The four columns 120 overlap the steel frame structures 110 along their circumferential direction. Each of the three steel frame structures 110 is connected to an insulator assembly, which is used to connect the first phase conductor 20, the second phase conductor 30, and the third phase conductor 40, respectively.

[0028] The aforementioned narrow-base tension tower 10, by setting steel frame structures 110 at the first, second, and third heights of the column 120, eliminates the need for crossarms cantilevered on both sides of the tower structure 100 in related technologies, thereby significantly reducing the corridor width of the transmission line. In addition, since the steel frame structures 110 are spaced apart along the extension direction of the column 120, the conductors originally arranged on both sides can be arranged vertically along the height direction of the tower structure 100, which also helps to reduce the overall width of the narrow-base tension tower 10, thus meeting the conditions for construction in congested corridor areas.

[0029] In some embodiments, the steel frame structure 110 is rectangular when viewed from the cross-sectional direction of the tower structure 100. Understandably, the columns 120 can be connected to the rectangular steel frame structure 110 at its four right-angled locations, thus achieving an overlapping arrangement. On one hand, the rectangular shape of the steel frame structure 110 helps improve the uniformity of stress distribution in all directions, thereby enhancing the stability of the connection with the columns. On the other hand, besides the rectangular shape of the steel frame structure 110, it is also understood that the tower structure 100 is rectangular when viewed from any height in cross-section, which helps reduce the circumferential area of ​​the tower structure 100 and its construction footprint, thus meeting the requirements for construction in congested corridor areas.

[0030] The narrow-base tension tower 10 of this application is a special type of transmission tower used for transmission lines. It is typically used to change the direction or turn of the transmission line while providing support and stability for the line tension. Specifically, the tower body structure 100 is typically composed of multiple angle steels, which are connected by welding or bolting to form a stable integral structure;

[0031] In some embodiments, the steel frame structure 110 of this application is further connected to a tension-resistant device for fixing and adjusting the tension of the transmission line, including a guy wire clamp and a vibration damper. The tension-resistant device effectively resists the tension of the transmission conductor and reduces vibration and swaying.

[0032] Narrow-base tension towers play a crucial role in transmission lines, ensuring smooth line alignment and tension regulation while meeting engineering design and construction requirements. Their installation location and model are selected and determined based on the specific line design and geographical environment requirements.

[0033] Combination Figure 2 As shown, in some embodiments, the three steel frame structures 110 are each provided with a first attachment point, a second attachment point and a third attachment point. The insulator assembly includes a first tension insulator 210, a second tension insulator 220 and a support insulator 230. The first attachment point, the second attachment point and the third attachment point are respectively used to connect the first tension insulator 210, the second tension insulator 220 and the support insulator 230.

[0034] The aforementioned first tension insulator 210 and second tension insulator 220 ensure the insulation performance and safety reliability of the transmission line. Specifically, they perform the following functions: First, insulation support: the insulators on the narrow-base tension tower 10 support and fix the conductors or ground wires of the transmission line, preventing contact between the conductors and the tower, and ensuring the insulation performance of power transmission; second, electrical insulation: the main function of the insulators is to provide electrical insulation in the transmission line, isolating the transmitted electrical energy from the tower structure 100 to prevent accidents such as leakage or short circuits; third, protection against arcing: the insulators can effectively prevent arcing caused by external influences or abnormal conditions on the power line, protecting the stable operation of the line and preventing power loss.

[0035] Therefore, in terms of materials, the first tension insulator 210, the second tension insulator 220, and the supporting insulator 230 can be made of ceramic, composite insulator, or fiberglass, etc., which have good insulation performance and can withstand high voltage and high current to ensure the safe operation of the line. In addition, the surface of the above insulators can be coated or designed with special structures to effectively resist the erosion of dust, oil and rainwater, and reduce flashover and insulation breakdown caused by these factors.

[0036] It should be noted that this application changes the arrangement of the conductors while meeting the electrical clearance requirements.

[0037] The electrical clearance in transmission lines refers to the distance between two conductive elements, used to ensure the safe operation of the power system. The size of the electrical clearance is related to factors such as voltage level, environmental conditions, and equipment requirements. In transmission lines, electrical clearances are designed to prevent phenomena such as arcing or corona discharge, thereby reducing power loss and improving the reliability of the power system.

[0038] Therefore, for high-voltage transmission lines, the clearance is typically large to ensure that electrical equipment is not affected by corona discharge and maintains stable electrical performance. Appropriate insulators are installed to support the conductors and maintain a safe electrical clearance between the conductors and supporting structures to prevent arcing and electric shock risks. Clearance plays a crucial role in the design and operation of transmission lines, ensuring the safe and reliable operation of the power system.

[0039] Therefore, this application designs and adjusts the specific electrical clearances in accordance with relevant standards and specifications, and there is no situation where the electrical clearance standards are not met after canceling the crossarm or changing the conductor layout.

[0040] In some embodiments, the first tension insulator 210 and the second tension insulator 220 are arranged at an angle and are each used to connect the conductor. The support insulator 230 is disposed between the first tension insulator 210 and the second tension insulator 220 and is used to hang the jumper 50, which is used to connect the conductors on both sides.

[0041] Specifically, the jumper 50 enables the connection of the conductors on both sides, and the jumper 50 is hung by the support insulator 230, which can provide stable mechanical support for the jumper 50, prevent the jumper 50 from being affected by external forces and causing excessive vibration or displacement, help maintain the structural integrity and stability of the jumper 50, reduce the risk of failure caused by external factors, and provide necessary electrical insulation protection.

[0042] In some embodiments, the steel frame structure 110 includes four steel bars 111 connected end to end. The first and second attachment points are respectively located on two of the steel bars 111 on opposite sides. The first tension insulator 210 and the second tension insulator 220 are set at an angle to the same side. The support insulator 230 is connected to the other two steel bars 111 and is located on the same side of the steel bars 111.

[0043] Specifically, one end of each of the first tension insulator 210 and the second tension insulator 220 is connected to the steel bar 111, and the other end is used to connect the conductor. Figure 1 As shown, the phrase "the supporting insulator 230 is connected to two other steel bars 111, located on the same side of the steel bars 111" refers to the supporting insulator 230 being positioned on the side of the smaller angle formed by the first tension insulator 210 and the second tension insulator 220. This ensures that when the jumper 50 is suspended, it is on the same side as the conductor, connecting the conductors on both sides and improving the operational reliability of the narrow-base tension tower 10. Furthermore, by setting the first and second connection points on two steel bars 111 on opposite sides, the situation where the angle between the first tension insulator 210 and the second tension insulator 220 would be too small if the first and second connection points were located on two adjacent steel bars 111 is avoided. Therefore, the above arrangement helps to ensure the rationality of the angle setting, and also reserves steel bars 111 for installing the supporting insulator 230, ensuring the rationality of the arrangement of the supporting insulator 230.

[0044] In some embodiments, the steel frame structure 110 further includes a hanging plate structure 112. Each of the first and second mounting points is provided with a hanging plate structure 112. The two hanging plate structures 112 are used to fix the first insulator and the second insulator, respectively, thereby improving the connection stability between the first and second insulators and the steel bars 111 on the opposite side. Specifically, the hanging plate structure 112 can be bolted or welded to the steel bars 111. In addition, the hanging plate has openings for installing tension insulators, resulting in a simple and reliable structure.

[0045] Furthermore, in some embodiments, the middle sections of the opposite hanging plates are connected by angle steel, and the angle steel is spliced ​​back-to-back to form a T-shaped angle steel for support. Preferably, the aforementioned angle steel can be L63X5 angle steel with grade Q355.

[0046] Furthermore, in some embodiments, the support insulator 230 is directly fixed to the side of the steel bar 111, which improves the connection stability of the support insulator 230. Specifically, the support insulator 230 is used to hang the jumper 50 and does not need to be angled with the first tension insulator 210 or the second tension insulator 220. Therefore, the support insulator 230 can be vertically connected to the steel bar 111, and the hanging plate structure 112 is omitted. It is directly fixed to the side of the steel bar 111, which improves the support stability of the support insulator 230 for the jumper 50.

[0047] In some embodiments, a steel frame structure 110 is provided at a fourth height along the extension direction of the column 120, and four steel frame structures 110 are spaced apart along the extension direction of the column 120, so as to realize the function of the narrow base tension tower 10 of this application for connecting a phase conductor of the disconnection line.

[0048] Specifically, when new transmission lines are constructed, they may intersect with existing lines. To avoid excessive crossings, it is often necessary to disconnect the existing lines and reconnect the disconnected conductors. Traditional solutions typically require building a new transmission tower, inevitably wasting land resources and increasing construction costs. Furthermore, after disconnection, there may be cases where only one phase conductor needs to be reconnected; building a new transmission tower would undoubtedly incur significant costs. Therefore, this application, by installing a steel frame structure 110 at the fourth height, facilitates the connection of a single phase conductor of the disconnected line, greatly reducing construction costs.

[0049] In a comprehensible way, combined Figure 2 As shown, the first, second, third, and fourth heights are arranged from high to low along the extension direction of column 120.

[0050] In some embodiments, the top of the narrow-base tension tower 10 also includes a ground wire bracket 300, which is used to hang a ground wire to connect the narrow-base tension tower 10 to the ground, thereby providing electromagnetic shielding, lightning protection and grounding protection.

[0051] In some embodiments, the width of the top of the tower structure 100 is 1.5 meters to 2.5 meters. Specifically, the tower structure 100 of this application maintains a constant slope, thereby ensuring that the overall width of the tower structure 100 is significantly reduced. Preferably, the width of the top of the tower structure 100 is 1.5 meters to 2.5 meters, thus meeting the conditions for construction in congested corridor areas.

[0052] Furthermore, in some embodiments, the bottom root opening of the tower structure 100 is 2.5 meters to 3.5 meters.

[0053] Specifically, the root opening width of the aforementioned transmission tower refers to the distance or width between the bases of the tower. The size of the root opening width is affected by a variety of factors, including the voltage level of the transmission line, the height of the tower, geological conditions, and design standards.

[0054] The determination of the root opening width needs to take into account the following aspects:

[0055] First, the voltage level of the transmission line: high-voltage transmission lines require a larger root opening width to provide sufficient stability and load-bearing capacity. Second, the tower height: taller towers will generate a larger overturning moment, so a larger root opening width is required to increase the stability of the tower. Third, geological conditions: the stability and load-bearing capacity of soil under different geological conditions are different, and the appropriate root opening width needs to be determined according to the specific geological conditions. Fourth, design standards: the determination of the root opening width usually needs to comply with relevant design standards and specifications to ensure the structural strength and safety of the transmission tower.

[0056] In practical design, soil mechanics analysis and structural calculations are typically performed, taking into account factors such as the tower structure's center of gravity, horizontal and vertical loads, and wind loads, to determine the appropriate root opening width. It is important to note that different types and specifications of transmission towers may have varying root opening widths; the specific value needs to be determined based on the specific engineering design. Therefore, during the design and construction process, structural calculations and evaluations should be conducted by professional engineers to ensure the stability and safety of the transmission tower.

[0057] A typical 220kV transmission tower with a height of 24 meters typically has a base opening of 7-9 meters. In this application, the narrow-base tension tower 10 eliminates the crossarms cantilevered on both sides of the tower structure 100, significantly reducing the width of the transmission line corridor. Furthermore, by changing the conductor arrangement and complying with relevant design standards and specifications, the base opening width of the tower structure 100 can be set within a relatively small range. Preferably, in one embodiment, the base opening of the tower structure 100 is 2.5-3.5 meters, thus meeting the requirements for construction in congested corridor areas.

[0058] In some embodiments, the narrow-base tension tower 10 of this application is suitable for a 220kV AC environment.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A narrow base dead end tower characterized by, The tower body structure comprises three steel frame structures and four columns extending in a conical column shape, the three steel frame structures are connected to the columns at first, second and third heights along the extending direction of the columns, and the four columns are respectively overlapped on the steel frame structures along the circumferential direction of the steel frame structures, the three steel frame structures are respectively connected with the insulator assembly, and the insulator assembly is used for connecting the first, second and third phase conductors respectively; The three steel frame structures are respectively provided with first, second and third hanging points, and the insulator assembly comprises first, second and supporting insulators, and the first, second and third hanging points are used for connecting the first, second and supporting insulators respectively; The first and second insulators are arranged at an angle and are respectively used for connecting conductors, and the supporting insulator is arranged between the first and second insulators and is used for hanging a jumper, and the jumper is used for connecting the conductors on both sides; The steel frame structure comprises four steel strips connected in head-to-tail manner, the first and second hanging points are arranged on two opposite steel strips respectively, and the first and second insulators are arranged at an angle towards the same side, and the supporting insulator is connected to the steel strips on the same side.

2. The narrow base strain tower of claim 1, wherein, The steel frame structure further comprises a hanging plate structure, and the first and second hanging points are respectively provided with the hanging plate structure, and the two hanging plate structures are used for fixing the first and second insulators respectively.

3. The narrow base tension tower of claim 1, wherein, The supporting insulator is directly fixed to the side surface of the steel strip.

4. The narrow base tension tower of claim 1, wherein, The fourth height of the column along the extending direction of the column is provided with the steel frame structure, and the four steel frame structures are arranged at intervals along the extending direction of the column.

5. The narrow base tension tower according to claim 1, wherein, The top of the narrow-base strain tower further comprises a ground wire support, and the ground wire support is used for hanging a ground wire.

6. The narrow base tension tower of claim 1, wherein, The width of the top of the tower body structure is 1.5-2.5 meters.

7. The narrow base tension tower according to claim 1, wherein, The bottom of the tower body structure is opened to 2.5-3.5 meters.

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