A transmission tower

Abstract

The invention discloses a transmission tower, which comprises a tower body and a conductive device, wherein the conductive device is installed on the tower body; the conductive device comprises a conductor for conducting electricity, and the two ends of the conductor are respectively used to connect a transmission line; the two ends of the conductive device extend out of the tower body along the transmission direction of the transmission line; and the conductive device is insulated from the tower body. The transmission tower of the invention is connected to the transmission line through the conductive device, which simplifies the structure of the transmission tower and reduces the width of the transmission line corridor.

Description

Technical Field

[0001] The invention belongs to the field of power transmission equipment, and in particular relates to a new type of power transmission tower. Background Art

[0002] In conventional overhead transmission lines, transmission lines are fixed by transmission towers, and the width of the entire transmission line corridor is determined by the size of the tower head gap. In transmission lines, the distance between adjacent transmission lines only needs to meet the minimum air gap between phases. However, the width of the transmission line corridor is much larger than the minimum air gap between phases of transmission lines. The reason is that the overhead bare conductor, which is at a high potential, needs to be set at a certain safety distance from the transmission tower body, which is at a low potential.

[0003] like Figure 1 As shown, in the prior art, the phase width A of the transmission line is much larger than the minimum phase air gap of the transmission line, and the phase width A of the transmission line determines the width of the transmission line corridor. In order to meet the safety of a small area of ​​the transmission tower, the width of the entire transmission line corridor is expanded. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a new type of transmission tower, on which a conductive device is arranged to connect the transmission lines through the conductive device, thereby ensuring a safe gap between the transmission lines and the tower body and shortening the distance between adjacent transmission lines.

[0005] The present invention provides a transmission tower, comprising a tower body and a conductive device, wherein the conductive device is installed on the tower body;

[0006] The conductive device comprises a conductor for conducting electricity, and two ends of the conductor are respectively used to connect to the transmission line;

[0007] Both ends of the conductive device extend out of the tower body along the transmission direction of the transmission line;

[0008] The conductor is insulated from the tower body.

[0009] In the above transmission tower, there are multiple conductive devices, and the multiple conductive devices are arranged parallel to each other.

[0010] An optional solution is that the distance between the axes of adjacent conductive devices is equal to the minimum air gap between phases of the transmission line connected to the conductive devices.

[0011] In the above transmission tower, the conductive device includes a cable and a cable terminal, both ends of the cable are respectively connected to the cable terminals, and the cable terminals are used to connect to the transmission line.

[0012] Another optional solution is that the conductive device is a wall bushing, which includes an insulating tube, a conductive rod is provided inside the insulating tube, and wiring terminals are respectively provided at both ends of the conductive rod, and the wiring terminals are used to connect the power transmission line.

[0013] Another optional solution is that the conductive device includes a gas bushing and a gas-insulated transmission line, and both ends of the gas-insulated transmission line are respectively connected to the gas bushing, and the gas bushing is used to connect the transmission line.

[0014] The transmission tower further comprises an oblique insulator, which is located above the conductive device, one end of which is connected to the end of the conductive device, and the other end of which is connected to the tower body.

[0015] In the above transmission tower, the conductive device further comprises a mounting flange, the mounting flange is located in the middle of the conductive device, and the conductive device is connected to the tower body via the mounting flange.

[0016] In the above transmission tower, an angle is provided between the axis of the conductive device and the horizontal center line of the tower body, and the angle is an acute angle.

[0017] As an optional solution of the present invention, the acute angle is 45 degrees.

[0018] The transmission tower of the present invention is provided with a conductive device on the tower body, the conductive device is used to connect the transmission line, realize the transition from the high potential of the transmission line to the low potential of the tower body, and eliminates the original cross arm and the corresponding insulator; the transmission tower can reduce the distance between adjacent transmission lines, thereby reducing the width of the transmission line corridor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a power transmission line in the prior art.

[0020] Figure 2 It is a schematic diagram of the structure of a transmission tower according to the first embodiment of the present invention.

[0021] Figure 3 It is a partial enlarged view of the transmission tower of the first embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of a transmission tower according to the second embodiment of the present invention.

[0023] Figure 5 It is a partial enlarged view of the transmission tower of the second embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the wall bushing according to the second embodiment of the present invention.

[0025] Figure 7It is a schematic diagram of the structure of a transmission tower according to the third embodiment of the present invention.

[0026] Figure 8 It is a partial enlarged view of the transmission tower of the third embodiment of the present invention.

[0027] Fig. 9 It is a schematic diagram of the connection between the gas bushing and the gas-insulated transmission line according to the third embodiment of the present invention.

[0028] Fig.10 It is a top view of the transmission tower of the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following is a more detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings and examples, so that the scheme of the present invention and its advantages in various aspects can be better understood. However, the specific embodiments and examples described below are only for the purpose of illustration, rather than for limiting the present invention.

[0030] The "connection" described in the present invention should be understood in a broad sense, unless otherwise clearly specified or limited, and can be directly connected or connected through an intermediate medium. In the description of the present invention, it should be understood that the directions or positional relationships indicated by "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] like Figures 2 to 10 As shown, the present invention provides a transmission tower for erecting a transmission line 300 in a transmission line. The transmission tower includes a tower body 100 and a conductive device 200, and the conductive device 200 is installed on the tower body 100. The conductive device 200 includes a conductor for conducting electricity, and both ends of the conductor are respectively used to connect the transmission line 300. The transmission lines 300 at both ends of the conductive device 200 are connected through the conductor, so that the transmission line can transmit electricity normally without affecting the efficiency of power transmission. Both ends of the conductive device 200 extend out of the tower body 100 along the transmission direction of the transmission line 300, so that a safe distance is maintained between the transmission line 300 and the tower body 100. The conductive device is insulated from the tower body 100 to prevent the conductor from conducting electricity to the tower body 100.

[0032] The transmission tower of the present invention is connected to the transmission line 300 through the conductive device 200 installed on the tower body 100. The conductive device 200 is insulated from the tower body 100, which not only ensures the transition from the high potential of the transmission line 300 to the low potential of the tower body 100, but also reduces the distance between adjacent transmission lines 300, thereby reducing the width of the transmission line corridor.

[0033] Example 1

[0034] like Figure 2 , Figure 3 As shown, the tower body 100 is provided with a conducting device 200, and the two ends of the conducting device 200 are connected to the transmission line 300. The conducting device 200 includes a cable 11 and a cable terminal 12, and the two ends of the cable 11 are respectively connected to the cable terminal 12. The cable terminal 12 is used to connect the transmission line 300.

[0035] The cable 11 is coated with a conductive wire through an insulating layer, and the conductive wire is used as a conductor for power transmission. Both ends of the conductive wire are connected to the cable terminal 12 respectively, and the cable terminal 12 is connected to the transmission line 300 to achieve the connection of the transmission line. The insulating layer of the cable 11 ensures the insulation between the conductive wire and the tower body 100, and prevents the conductive wire and the tower body 100 from conducting electricity.

[0036] In this embodiment, the distance between adjacent transmission lines 300 is B. Through the combination of the cable 11 and the cable terminal 12, the cable terminal 12 extends out of the tower body 100 along the transmission direction of the transmission line 300, ensuring that the distance between the tower body 100 and the transmission line 300 is a safe distance. The conductive device 200 is insulated from the tower body 100, and no safety gap is required. The distance B between adjacent transmission lines 300 in this embodiment is less than Figure 1 The distance A between adjacent transmission lines is reduced, which simplifies the transmission tower structure and reduces the width of the transmission line corridor.

[0037] Optionally, there are multiple conductive devices 200, and the multiple conductive devices 200 are arranged in parallel to each other to ensure the parallelism between the transmission lines. The number of conductive devices 200 changes according to the design requirements of the transmission line.

[0038] Preferably, the distance between the axes of adjacent conductive devices 200 is equal to the minimum air gap between phases of the transmission line 300 connected to the conductive device 200. The axis of the conductive device 200 and the connected transmission line 300 are usually located in a straight line, and the distance between the axes of adjacent conductive devices 200 is equal to the distance between the transmission lines 300 connected to the conductive device 200. The minimum air gap between phases of the transmission line 300 is the minimum safe gap between the transmission lines 300. The transmission tower of this embodiment can make the distance between the axes of adjacent conductive devices 200 equal to the minimum air gap between phases of the transmission line 300, so that the distance between adjacent transmission lines 300 is the minimum air gap between phases, thereby reducing the width of the transmission corridor.

[0039] Optionally, the transmission tower of this embodiment further includes a diagonal insulator 13, which can be a composite line insulator, a composite support insulator, or an insulating member such as a glass fiber reinforced plastic solid insulating rod or a glass fiber reinforced plastic pipe. The diagonal insulator 13 is located above the conductive device 200, and one end of the diagonal insulator 13 is connected to the end of the conductive device 200, and the other end is connected to the tower body 100. In this embodiment, one end of the diagonal insulator 13 is connected to the end of the cable terminal 12 extending out of the tower body 100, and the other end is connected to the fixed tower body 100, so as to tighten and fix the cable terminal 12.

[0040] In the transmission tower of this embodiment, the conductive device 200 further includes a mounting flange 14, and the mounting flange 14 is located in the middle of the conductive device 200. The conductive device 200 is connected to the tower body 100 through the mounting flange 14. The middle of the conductive device 200 means that there is a certain distance between the mounting flange 14 and the end of the conductive device 200, so that after the conductive device 200 is installed on the tower body 100, the conductive device 200 maintains a safe distance from the tower body 100. There are multiple mounting flanges 14, and the number is set according to demand. The mounting flange 14 is easy to install and is suitable for fixed connection between the conductive device 200 and the tower body 100. In this embodiment, the mounting flange 14 is located on the cable terminal 12.

[0041] Example 2

[0042] like Figure 4 , Figure 5 and Figure 6 As shown, the tower body 100 is provided with a conducting device 200, and the two ends of the conducting device 200 are connected to the transmission line 300. The conducting device 200 is a wall bushing. The wall bushing includes an insulating tube 21, and the insulating tube 21 is made of insulating material. A conducting rod 22 is arranged in the insulating tube 21, and the two ends of the conducting rod 22 are respectively provided with wiring terminals 23, and the wiring terminals 23 are used to connect the transmission line 300.

[0043] The conductive rod 22 is used as a conductor to achieve the connection of the transmission line in cooperation with the terminal 23. The insulating tube 21 ensures the insulation between the conductive rod 22 and the tower body 100, and avoids the conduction between the conductive rod 22 and the tower body 100.

[0044] In this embodiment, the distance between adjacent transmission lines 300 is C, and the tower body 100 is extended along the transmission direction of the transmission line 300 through the wall bushing to connect the transmission line 300, so as to ensure that the distance between the tower body 100 and the transmission line 300 is a safe distance. The conductive device 200 is insulated from the tower body 100, and no safety gap is required. The distance C between adjacent transmission lines 300 in this embodiment is less than Figure 1 The distance A between adjacent transmission lines 300 is reduced, which simplifies the transmission tower structure and reduces the width of the transmission line corridor.

[0045] Optionally, similar to Embodiment 1, in this embodiment, there are multiple conductive devices 200, and the multiple conductive devices 200 are arranged in parallel with each other.

[0046] Preferably, similar to Embodiment 1, the distance between the axes of adjacent conductive devices 200 is equal to the minimum inter-phase air gap of the power transmission line 300 connected to the conductive devices 200 .

[0047] Optionally, the transmission tower of this embodiment further includes a diagonal insulator 24, which is made of a composite insulating material. The diagonal insulator 24 is located above the wall bushing, one end of which is connected to the end of the wall bushing extending out of the tower body 100, and the other end is connected to the fixed tower body 100, so as to tighten and fix the wall bushing.

[0048] In the transmission tower of this embodiment, the wall bushing further includes a mounting flange 25, which is located in the middle of the wall bushing. The number of mounting flanges 25 is multiple and is set according to demand. The wall bushing is connected to the tower body 100 via the mounting flange 25.

[0049] Example 3

[0050] like Figure 7 , Figure 8 and Fig. 9 As shown, the tower body 100 is provided with a conducting device 200, and the two ends of the conducting device 200 are connected to the transmission line 300. The conducting device 200 includes a gas bushing 31 and a gas-insulated transmission line (GIL) 32, and the two ends of the gas-insulated transmission line 32 are respectively connected to the gas bushing 31, and the gas bushing 31 is used to connect the transmission line 300.

[0051] The gas bushing 31 and the gas-insulated transmission line 32 are both filled with insulating gas. The gas bushing 31 includes an internal conductive rod 311 and an external terminal 312. The gas-insulated transmission line 32 is connected to the conductive rod 311 in the gas bushing, and the conductive rod 311 is connected to the terminal 312, and the terminal 312 is used to connect the transmission line 300. The gas-insulated transmission line 32 and the conductive rod 311 act as conductors, and cooperate with the terminal 312 to realize the connection of the circuit.

[0052] In this embodiment, the distance between adjacent transmission lines 300 is D. Through the combination of the gas bushing 31 and the gas-insulated transmission line 32, the gas bushing 31 extends out of the tower body 100 along the transmission direction of the transmission line 300, ensuring that the distance between the tower body 100 and the transmission line 300 is a safe distance. The conductive device 200 is insulated from the tower body 100, and no safety gap is required. The distance D between adjacent transmission lines in this embodiment is less than Figure 1 The distance A between adjacent transmission lines is reduced, which simplifies the transmission tower structure and reduces the width of the transmission line corridor.

[0053] Optionally, similar to Embodiment 1, the number of the conductive devices 200 in this embodiment is multiple, and the multiple conductive devices 200 are arranged in parallel with each other.

[0054] Preferably, similar to Embodiment 1, the distance between the axes of adjacent conductive devices 200 is equal to the minimum inter-phase air gap of the power transmission line 300 connected to the conductive devices 200 .

[0055] Optionally, the transmission tower of this embodiment further includes a diagonal insulator 33, which is made of a composite insulating material. The diagonal insulator 33 is located above the conductive device 200, and one end of the diagonal insulator 33 is connected to the end of the conductive device 200, and the other end is connected to the tower body 100. In this embodiment, one end of the diagonal insulator 33 is connected to the end of the gas casing 31 extending out of the tower body, and the other end is connected to the fixed tower body 100, so as to tighten and fix the gas casing 31.

[0056] The conductive device 200 of this embodiment further includes a mounting flange 34, which is located in the middle of the conductive device 200. There are multiple mounting flanges 34, and the number is set according to demand. The conductive device 200 is connected to the tower body 100 through the mounting flange 34. The mounting flange 34 in this embodiment can be set on the gas casing 31.

[0057] Example 4

[0058] like Fig.10 As shown, in this embodiment, in order to facilitate the fixing of the conductive device 200 on the tower body 100, the two ends of the conductive device 200 are kept at a safe distance from the tower body 100, and the tower body 100 is rotated. Taking the conductive device 200 as a wall bushing as an example, the axis of the conductive device 200 is colinear with the transmission line 300, and an angle is set between the axis of the conductive device 200 and the horizontal center line L1 of the tower body 100, and the angle is an acute angle. If the cross-section of the tower body 100 is a regular quadrilateral, the tower body 100 has two horizontal center lines. The angles between the axis of the conductive device 200 and the two horizontal center lines are both acute angles, that is, the axis of the conductive device 200 is not parallel or perpendicular to the horizontal center line of the tower body 100.

[0059] Preferably, the acute angle between the axis of the conductive device 200 and the horizontal center line of the tower body 100 is 45 degrees, which facilitates the installation of the conductive device 200 .

[0060] The transmission tower of the present invention connects the transmission lines through a conductive device, eliminating the cross arm and the corresponding insulator; the transmission tower can reduce the distance between adjacent transmission lines, thereby reducing the width of the transmission line corridor.

[0061] It should be noted that the various embodiments described above with reference to the accompanying drawings are only used to illustrate the present invention rather than to limit the scope of the present invention. Those skilled in the art should understand that any modification or equivalent substitution of the present invention without departing from the spirit and scope of the present invention should be included within the scope of the present invention. In addition, unless otherwise indicated by the context, words appearing in the singular include the plural form, and vice versa. In addition, unless otherwise specified, all or part of any embodiment may be used in combination with all or part of any other embodiment.

Claims

1. A transmission tower, characterized in that: It comprises a tower body and a conductive device, wherein the conductive device is installed on the tower body; The conductive device comprises a conductor for conducting electricity, and two ends of the conductor are respectively used to connect to the transmission line; Both ends of the conductive device extend out of the tower body along the transmission direction of the transmission line; The conductive device is insulated from the tower body; There are multiple conductive devices, and the multiple conductive devices are arranged in parallel with each other. The distance between the axes of adjacent conductive devices is equal to the minimum air gap between phases of the transmission line connected to the conductive devices. Wherein, the conductive device comprises a gas bushing and a gas-insulated transmission line, the two ends of the gas-insulated transmission line are respectively connected to the gas bushing, the gas bushing comprises: an internal conductive rod and an external terminal, the gas-insulated transmission line is connected to the conductive rod, the conductive rod is connected to the terminal, and the terminal is used to connect the transmission line.

2. The transmission tower according to claim 1, characterized in that: It also includes an oblique insulator, which is located above the conductive device, one end of which is connected to the end of the conductive device, and the other end of which is connected to the tower body.

3. The transmission tower according to claim 1, characterized in that: The conductive device further comprises a mounting flange, wherein the mounting flange is located in the middle of the conductive device, and the conductive device is connected to the tower body via the mounting flange.

4. The transmission tower according to claim 3, characterized in that: An angle is provided between the axis of the conductive device and the horizontal center line of the tower body, and the angle is an acute angle.

5. The transmission tower according to claim 4, characterized in that: The acute angle is 45 degrees.

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