Double-circuit iron tower

Abstract

The utility model provides a double-circuit iron tower which comprises a tower body and a maintenance platform, the maintenance platform is arranged on one side of the tower body, and the tower body is sequentially provided with an upper cross arm, a middle cross arm and a lower cross arm from top to bottom. Newly added rod materials are arranged on the upper cross arm, the middle cross arm and the lower cross arm; the maintenance platform is provided with three cable terminals, each cable terminal is provided with a zinc oxide lightning arrester, and the same-phase cable terminals on the maintenance platform are correspondingly arranged; and the three cable terminals are respectively connected with a power transmission line on the power transmission line iron tower through the newly added rod materials of the first cross arm group, the second cross arm group and the third cross arm group. The beneficial effects of the utility model are that the power line of the newly built transformer station can be connected into the existing line through crevasse according to system requirements sometimes, and the iron tower is arranged on the plurality of cross arms, so that the power transmission line meets the system requirements after being wound by one circle, the space can be saved, and workers can conveniently install the power transmission line.

Description

Technical Field

[0001] This utility model belongs to the field of iron towers, and in particular relates to a double-circuit iron tower. Background Technology

[0002] In power engineering, the power lines of newly built substations sometimes require the existing lines to be broken and connected to the substation according to system requirements. Existing cables in the same corridor should be erected on the same tower as much as possible, and then erected on separate towers when the routes are different. This will not only increase the length of the cables, but also increase the cost. Utility Model Content

[0003] In view of this, the present invention aims to propose a double-circuit iron tower. In the patent, the iron tower is set with multiple crossarms, so that the transmission line can meet the system requirements after going around once, reducing the length of the cable and reducing the cost.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A double-circuit iron tower includes a tower body and a maintenance platform. The maintenance platform is located on one side of the tower body, and the tower body is provided with an upper crossarm, a middle crossarm, and a lower crossarm from top to bottom.

[0006] New poles were installed on the upper crossarm, middle crossarm, and lower crossarm;

[0007] The maintenance platform is equipped with three cable terminals, each of which is fitted with a zinc oxide surge arrester. The same phase cable terminals on the maintenance platform are also installed accordingly.

[0008] The three cable terminations are connected to the power transmission lines on the transmission tower via newly added poles in the first, second, and third crossarm groups, respectively.

[0009] Furthermore, the maintenance platform is fixed to the ground by three support columns, which are correspondingly set with cable terminals. Power cables are provided outside the support columns, and the ends of the power cables are connected to the transmission lines on the cable terminals. A grounding device is connected to the power cables.

[0010] All cables are connected to grounding wires, and each grounding wire is connected to a cable grounding box located on the main pole of the cable terminal platform.

[0011] Furthermore, the two ends of the transmission line are respectively provided with upper and lower lead insulator strings and lower lead insulator strings, and the transmission line is installed on the newly added pole material through the upper and lower lead insulator strings.

[0012] Furthermore, all three cables are equipped with cable protection sleeves.

[0013] Furthermore, the cable termination is connected to the first lead wire via a first copper-aluminum transition device clamp, and the first lead wire is connected to the power transmission line via a first bolt-type T-clamp.

[0014] The first lead is equipped with a second bolt-type T-clamp, the bottom of which is connected to the second lead. The other end of the second lead is connected via a second copper-aluminum transition device clamp, which is connected to a zinc oxide surge arrester.

[0015] The newly added poles are installed on the crossarm of the power transmission tower through a connecting structure. The newly added poles include a first newly added pole and a second newly added pole. One end of the second newly added pole is installed on the crossarm of the power transmission tower through a connecting structure, and the other end of the second newly added pole is installed at an angle on the first newly added pole.

[0016] One end of the first newly added pole is set on the crossarm of the power transmission tower, and the other end of the first newly added pole is provided with a cable hanging point.

[0017] Furthermore, the connecting structure is installed on the crossarm of the power transmission tower, and there are four connecting structures, with the positions of the connecting structures corresponding to the positions of the first newly added pole and the second newly added pole, respectively.

[0018] Preferably, two connecting structures are located at the end of the first newly added pole and at the position where the first newly added pole contacts the crossarm, and two connecting structures are located at the end of the second newly added pole and at the position where the second newly added pole contacts the crossarm of the power tower.

[0019] Furthermore, the connection structure includes node angle steel, node plate, and stiffening ribs, with the node plate disposed on one side of the tower material of the crossarm of the power transmission tower;

[0020] Stiffening ribs are installed between the tower material and the newly added pole material of the crossarm of the power transmission tower. The stiffening ribs are installed on the node plate, the node angle steel is installed on the other side of the node plate, and the newly added pole material is installed at the end of the node plate.

[0021] Furthermore, the node angle steel has an L-shaped structure, with a first connecting hole at the vertical end and a second connecting hole at the horizontal end.

[0022] The node angle steel is bolted to the newly added pole, and the node angle steel is bolted to the node plate.

[0023] Furthermore, the stiffening rib is in the shape of a right-angled triangle.

[0024] Preferably, the stiffening ribs are welded to the top of the tower material of the crossarm of the power transmission tower, and the stiffening ribs are welded to the node plate.

[0025] Furthermore, the node plate is provided with a first through hole corresponding to the first connecting hole.

[0026] The node plate is bolted to the node angle steel through the first connecting hole.

[0027] Furthermore, the new material is L-shaped, and the horizontal end of the new material is provided with a third connecting hole corresponding to the second connecting hole.

[0028] Furthermore, the tower material of the power transmission tower crossarm is L-shaped, and the vertical end of the power transmission tower crossarm is provided with a fourth connecting hole, and the bottom of the node plate is provided with a second through hole corresponding to the fourth connecting hole.

[0029] The tower material and node plate of the crossarm of the power transmission tower are connected by bolts.

[0030] Furthermore, the hanging point includes a mounting plate, the upper part of which is provided with a first mounting hole, the end of the first newly added rod is provided with a second mounting hole corresponding to the first mounting hole, the mounting plate and the end of the first newly added rod are bolted together, and the bottom of the mounting plate is provided with a hanging hole.

[0031] Compared with existing technologies, the double-circuit iron tower described in this utility model has the following advantages:

[0032] 1. When building a new substation, the power line may sometimes require the existing line to be broken to be connected according to system requirements. In this patent, the tower is set with multiple crossarms so that the transmission line can be routed around to meet the system requirements, which can save space and facilitate the installation by workers.

[0033] 2. The connecting structure connects the new pole to the crossarm of the power tower. The stiffening ribs prevent the new pole from being on the same plane as the crossarm, thus avoiding the problem of the new pole intersecting with the crossarm in space. This reduces the danger to workers during the construction of the new pole, has little impact on the power tower itself, and can reduce the entanglement of wires or cables. Attached Figure Description

[0034] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0035] Figure 1 This is an overall schematic diagram of a double-circuit iron tower according to this real-time novel embodiment;

[0036] Figure 2 This is a side view of a double-circuit iron tower according to this real-time novel embodiment;

[0037] Figure 3 This is a schematic diagram of a maintenance platform for a double-circuit iron tower according to a real-time novel embodiment of the present invention;

[0038] Figure 4This is a schematic diagram of an embodiment of the present invention for adding a pole structure to a double-circuit iron tower;

[0039] Figure 5 This is a schematic diagram of the upper crossarm of a double-circuit iron tower with added pole structure according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of a connection assembly for adding a pole structure to a double-circuit iron tower according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of side A of a connecting assembly for adding a pole structure to a double-circuit iron tower according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the hanging point.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. First newly added pole; 2. Second newly added pole; 3. Crossarm of power transmission tower; 4. Tower material of crossarm of power transmission tower; 5. Connection structure; 6. Hanging point; 7. Node angle steel; 8. Node plate; 9. Stiffening rib; 10. First connecting hole; 11. Second connecting hole; 12. Third connecting hole; 13. First through hole; 14. Fourth connecting hole; 15. Hanging hole; 16. Second through hole; 17. Mounting plate; 18. First mounting hole; 19. Second mounting hole; 20. Newly added pole; 21. Upper crossarm; 22. 23. Middle crossarm; 24. Lower crossarm; 25. Maintenance platform; 26. Cable terminal head; 27. Support column; 28. Power cable; 29. ​​Top and bottom conductor insulator string; 30. Lower conductor insulator string; 31. Cable protective sleeve; 32. Wire grounding device; 33. First copper-aluminum transition equipment clamp; 34. First lead wire; 35. First bolt-type T-clamp; 36. Second lead wire; 37. Zinc oxide surge arrester; 38. Transmission line; 39. Second copper-aluminum transition equipment wire; 30. Second bolt-type T-clamp. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] A double-circuit transmission tower includes a tower body and a maintenance platform 24. The maintenance platform 24 is located on one side of the tower body. From top to bottom, the tower body is provided with an upper crossarm 21, a middle crossarm 22, and a lower crossarm 23. Each of the upper crossarm 21, middle crossarm 22, and lower crossarm 23 is provided with additional pole material 20. Each maintenance platform 24 is provided with three cable terminals 25, each of which is equipped with a zinc oxide surge arrester 36. The same-phase cable terminals 25 on the maintenance platform 24 are correspondingly arranged. The three cable terminals 25 are respectively connected to the transmission lines 37 on the transmission line 37 tower through the additional pole material 20 of the first crossarm group, the second crossarm group, and the third crossarm group.

[0050] The maintenance platform 24 is fixed to the ground by three support columns 26, which are correspondingly arranged with cable termination heads 25. Power cables 27 are mounted on the outside of the support columns 26, and the ends of the power cables 27 are connected to the transmission lines 37 on the cable termination heads 25. A grounding device 31 is connected to the power cables 27. All cables are connected to grounding wires, and each grounding wire is connected to a cable grounding box located on the main pole of the cable termination platform.

[0051] The transmission line 37 is equipped with an upper lead insulator string 28 and a lower lead insulator string 29 at both ends, and the transmission line 37 is mounted on the newly added pole 20 via the upper lead insulator string 28. All three cables are equipped with cable protective sleeves 30. The cable termination 25 is connected to the first lead 33 via a first copper-aluminum transition clamp 32, and the first lead 33 is connected to the transmission line 37 via a first bolt-type T-clamp 34. A second bolt-type T-clamp 39 is provided on the first lead 33, the bottom of which is connected to the second lead 35. The other end of the second lead 35 is connected via a second copper-aluminum transition clamp 38, which is connected to the zinc oxide surge arrester 36. The newly added pole 20 is installed on the crossarm 3 of the power transmission tower via the connecting structure 5. The newly added pole 20 includes a first newly added pole 1 and a second newly added pole 2. One end of the second newly added pole 2 is installed on the crossarm 3 of the power transmission tower via the connecting structure 5, and the other end of the second newly added pole 2 is installed at an angle on the first newly added pole 1. One end of the first newly added pole 1 is installed on the crossarm 3 of the power transmission tower, and the other end of the first newly added pole 1 is provided with a cable hanging point 6.

[0052] The connecting structure 5 is installed on the crossarm 3 of the power transmission tower. There are 4 connecting structures 5, and the positions of the connecting structures 5 correspond to the positions of the first newly added pole 1 and the second newly added pole 2, respectively.

[0053] Preferably, two connecting structures 5 are located at the end of the first newly added pole 1 and at the position where the first newly added pole 1 contacts the crossarm, and two connecting structures 5 are located at the end of the second newly added pole 2 and at the position where the second newly added pole 2 contacts the crossarm 3 of the power tower.

[0054] The connecting structure 5 includes a node angle steel 7, a node plate 8, and a stiffening rib 9. The node plate 8 is located on one side of the tower material of the power transmission tower crossarm 3. The stiffening rib 9 is located between the tower material of the power transmission tower crossarm 3 and the newly added pole 20. The stiffening rib 9 is located on the node plate 8, and the node angle steel 7 is located on the other side of the node plate 8. The newly added pole 20 is located at the end of the node plate 8. The node angle steel 7 has an L-shaped structure. The vertical end of the node angle steel 7 has a first connecting hole 10, and the horizontal end of the node angle steel 7 has a second connecting hole 11. The node angle steel 7 is bolted to the newly added pole 20, and the node angle steel 7 is bolted to the node plate 8. The stiffening rib 9 is a right-angled triangle.

[0055] Preferably, the stiffening rib 9 is welded to the top of the tower material of the crossarm 3 of the power transmission tower, and the stiffening rib 9 is welded to the node plate 8.

[0056] The node plate 8 has a first through hole 13 corresponding to the first connecting hole 10. The node plate 8 is bolted to the node angle steel 7 through the first connecting hole 10. The newly added plate is L-shaped, and the horizontal end of the newly added plate has a third connecting hole 12 corresponding to the second connecting hole 11. The tower material of the power transmission tower crossarm 3 is L-shaped, and the vertical end of the tower material of the power transmission tower crossarm 3 has a fourth connecting hole 14. The bottom of the node plate 8 has a second through hole 16 corresponding to the fourth connecting hole 14. The tower material of the power transmission tower crossarm 3 is bolted to the node plate 8. The hanging point 6 includes a mounting plate 17. The upper part of the mounting plate 17 has a first mounting hole 18, and the end of the first newly added pole material 1 has a second mounting hole 19 corresponding to the first mounting hole 18. The mounting plate 17 is bolted to the end of the first newly added pole material 1, and the bottom of the mounting plate 17 has a hanging hole 15.

[0057] In practice, workers select the location of the crossarm 3 of the power transmission tower according to the actual situation, and set up the upper crossarm 21, middle crossarm 22, and lower crossarm 23 respectively, and set up the maintenance platform 24. The first newly added pole 1 and the second newly added pole 2 are respectively set on the crossarm 3 of the power transmission tower through the connecting assembly. This device connects the newly added pole 20 to the crossarm 3 of the power transmission tower by setting up the connecting structure 5. The stiffening rib 9 makes the newly added pole 20 and the crossarm 3 of the power transmission tower not on the same plane, avoiding the problem of the newly added pole crossing the crossarm in space, reducing the danger to workers during the operation of the newly added pole 20, having little impact on the power transmission tower itself, and reducing the entanglement of wires or cables.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-circuit iron tower, comprising a tower body, characterized in that: It includes the tower body and the maintenance platform (24). The maintenance platform (24) is located on one side of the tower body. The tower body is provided with an upper crossbeam (21), a middle crossbeam (22), and a lower crossbeam (23) from top to bottom. New poles (20) are provided on the upper crossarm (21), middle crossarm (22), and lower crossarm (23); The maintenance platform (24) is equipped with three cable terminals (25), each of which is equipped with a zinc oxide surge arrester (36). The same phase cable terminals (25) on the maintenance platform (24) are set accordingly. The three cable terminals (25) are connected to the transmission line (37) on the transmission line (37) tower through the newly added poles (20) of the first crossarm group, the second crossarm group and the third crossarm group respectively. The maintenance platform (24) is fixed to the ground by three support columns (26). The support columns (26) are correspondingly set with cable terminal heads (25). A power cable (27) is provided outside the support column (26). The end of the power cable (27) is connected to the power transmission line (37) through the cable terminal head (25). A wire grounding device (31) is connected to the support column (26). The transmission line (37) is provided with an upper lead wire insulator string (28) and a lower lead wire insulator string (29) at both ends, and the transmission line (37) is set on the newly added pole material (20) through the upper lead wire insulator string (28).

2. A double-circuit iron tower according to claim 1, characterized in that: All three cables are equipped with cable protection sleeves (30).

3. A double-circuit iron tower according to claim 1, characterized in that: The cable terminal head (25) is connected to the first lead wire (33) through the first copper-aluminum transition device clamp (32), and the first lead wire (33) is connected to the power transmission line (37) through the first bolt-type T-clamp (34); The first lead (33) is provided with a second bolt-type T-clamp (39), the bottom of the second bolt-type T-clamp (39) is connected to the second lead (35), and the other end of the second lead (35) is connected through a second copper-aluminum transition equipment line (38) clamp, which is connected to the zinc oxide surge arrester (36).

4. A double-circuit iron tower according to claim 1, characterized in that: The new pole (20) is set on the crossarm (3) of the power tower through the connecting structure (5). The new pole (20) includes a first new pole (1) and a second new pole (2). One end of the second new pole (2) is set on the crossarm (3) of the power tower through the connecting structure (5), and the other end of the second new pole (2) is set at an angle on the first new pole (1). One end of the first new pole (1) is set on the crossarm (3) of the power tower, and the other end of the first new pole (1) is provided with a cable hanging point (6).

5. A double-circuit iron tower according to claim 4, characterized in that: The connecting structure (5) is set on the crossarm (3) of the power tower. There are 4 connecting structures (5), and the positions of the connecting structures (5) correspond to the positions of the first newly added pole (1) and the second newly added pole (2), respectively. The connection structure (5) includes a node angle steel (7), a node plate (8), and a stiffening rib (9). The node plate (8) is set on one side of the tower material of the crossarm (3) of the power transmission tower. The stiffening rib (9) is set between the tower material and the new pole material (20) of the crossarm (3) of the power transmission tower. The stiffening rib (9) is set on the node plate (8). The node angle steel (7) is set on the other side of the node plate (8). The new pole material (20) is set at the end of the node plate (8).

6. A double-circuit iron tower according to claim 5, characterized in that: The node angle steel (7) has an L-shaped structure. The vertical end of the node angle steel (7) is provided with a first connecting hole (10), and the horizontal end of the node angle steel (7) is provided with a second connecting hole (11). The node angle steel (7) is bolted to the newly added rod (20), and the node angle steel (7) is bolted to the node plate (8); The node plate (8) is provided with a first through hole (13) corresponding to the first connecting hole (10); The node plate (8) is bolted to the node angle steel (7) through the first connecting hole (10).

7. A double-circuit iron tower according to claim 6, characterized in that: The newly added board is L-shaped, and the horizontal end of the newly added board is provided with a third connecting hole (12) corresponding to the second connecting hole (11); The tower material of the crossarm (3) of the power transmission tower is L-shaped. The vertical end of the tower material of the crossarm (3) of the power transmission tower is provided with a fourth connecting hole (14). The bottom of the node plate (8) is provided with a second through hole (16) corresponding to the fourth connecting hole (14). The tower material of the crossarm (3) of the power transmission tower is bolted to the node plate (8).

8. A double-circuit iron tower according to claim 6, characterized in that: The hanging point (6) includes a mounting plate (17), the upper part of the mounting plate (17) is provided with a first mounting hole (18), the end of the first newly added rod (1) is provided with a second mounting hole (19) corresponding to the first mounting hole (18), the mounting plate (17) and the end of the first newly added rod (1) are bolted together, and the bottom of the mounting plate (17) is provided with a hanging hole (15).

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