Combined power transmission line repair tower

Abstract

The invention provides a combined power transmission line emergency repair tower. The combined power transmission line emergency repair tower comprises a stand column, a wire suspension insulator string, a stay wire and a stand column connecting piece. The stand column comprises a base, a leg connecting section, a plurality of column body standard knots, a stay wire section, a wire hanging section and a column top section, the base is located at the bottommost end of the stand column, the lower end of the leg connecting section is connected with the base through a hemispherical spherical hinge, and the leg connecting section, the column body standard knots, the stay wire section, the wire hanging section and the column top section are sequentially connected through bolts; the lead suspension insulator string is used for fixing a lead of the power transmission line; the stay wire is used for fixing the stand column. According to the combination mode, the tower can be divided into a direct-current angle tower, a direct-current tangent tower, an alternating-current angle tower, a pull V-shaped alternating-current tangent tower and a pull door type alternating-current tangent tower. The emergency repair tower provided by the invention adopts a modular structure, and can meet various combination requirements of extra-high voltage alternating current and direct current under different nominal heights and two tower types of an angle tower and a tangent tower.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency repair towers, and in particular to a combined transmission line emergency repair tower. Background Art

[0002] At present, extreme weather and natural disasters occur frequently, with increasing randomness and uncertainty. Severe environmental disasters have become an important factor threatening the safe and stable operation of UHV dense corridors.

[0003] With the increase in the operation years of UHV lines, equipment abnormal problems are gradually increasing. Some common and hidden defects of the main body may lead to the loss of the channel section under extreme weather conditions. To ensure the safety of the large power grid, it is necessary to comprehensively improve the operation and maintenance emergency repair capabilities of UHV dense corridors. At present, for the rapid restoration technology of transmission lines after disaster damage at home and abroad, more device development work mainly focusing on emergency repair towers has been carried out for lines below 500 kV. The emergency repair system for UHV dense corridors is not yet complete, especially lacking a UHV dense corridor line emergency repair tower that is small in floor area for narrow corridors, light in weight and high in strength, and can be quickly assembled according to the actual conditions of AC / DC voltage levels and damaged lines. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the emergency repair system for UHV dense corridors is not yet complete, lacking a UHV dense corridor transmission line emergency repair tower that is small in floor area for narrow corridors, light in weight and high in strength, and can be quickly assembled according to the actual conditions of AC / DC voltage levels and damaged lines.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A combined transmission line emergency repair tower, characterized in that the emergency repair tower includes a column, and the column includes: a guy wire section, at least one suspension section, and a plurality of standard column sections; the guy wire section, the suspension section, and the plurality of standard column sections are sequentially connected according to the requirements of pole erection at different suspension heights to form a column.

[0007] The guy wire section and the suspension section are used to provide guy wire connection points and column connection points; the suspension section is also used to fix the conductor suspension insulator string.

[0008] Preferably, the guy wire section is a rectangular frame structure, and a guy wire horizontal cable hanging point and a lower guy wire hanging point of the side column are provided on its upper part.

[0009] Preferably, the hanging wire segment is a rectangular frame structure, and is provided in the middle thereof with: a hanging point for a conductor V string, a hanging point for a horizontal cable, a connection node between a crossbeam and a column, an upper stay wire hanging point of a side column, and a conductor strain hanging point. The hanging point for the conductor V string and the hanging point for the horizontal cable are located on the same side of the hanging wire segment. The connection node between the crossbeam and the column is located on the opposite side of the hanging point for the conductor V string of the hanging wire segment. The upper stay wire hanging points of the side columns are located at two corners adjacent to one side of the connection node between the crossbeam and the column on the hanging wire segment. The conductor strain hanging points are located on two adjacent sides on one side of the hanging point for the conductor V string of the hanging wire segment.

[0010] Preferably, the materials of the stay wire segment, the hanging wire segment, and multiple standard column sections are Q355 low-alloy high-strength structural steel.

[0011] Preferably, the column further includes a base, a connecting leg section, and a column top section. The base is located at the bottom end of the column. The connecting leg section is connected to the base through a hemispherical ball joint. The column top section is located at the top end of the column.

[0012] Preferably, the stay wire segment, the hanging wire segment, and the standard column section are all rectangular frame structures. The connecting leg section is an inverted triangular frame structure. The column top section is a rectangular frame structure and a top extension section is provided at its top section.

[0013] Preferably, one end of the column is fixed to the ground, and the number of columns is one or more. When the number of columns is more than one, the columns are connected through a connecting piece.

[0014] Preferably, when the number of columns is two, the two columns are combined in any of the following ways: side-by-side combination, parallel arrangement, or V-shaped arrangement. When the number of columns is more than 2, the multiple columns are arranged in parallel.

[0015] Preferably, when the columns are combined side by side, the connecting piece is a bolt connecting piece. When the columns are arranged in parallel or in a V-shaped arrangement, the connecting piece is a cable.

[0016] Preferably, when the columns are arranged in parallel, the distance between two adjacent columns is 15 to 20 meters. When the columns are arranged in a V-shaped arrangement, the included angle between the two columns does not exceed 30 degrees.

[0017] Preferably, the emergency repair tower further includes a crossbeam section, and the crossbeam section is fixed on the hanging wire segment, and the number of crossbeam sections is one or more.

[0018] Preferably, the emergency repair tower further includes a stay wire. One end of the stay wire is fixed to the column, and the fixed connection point of the other end is located on the ground or other fixed objects.

[0019] Preferably, it can be combined into a DC angle tower. The number of columns of the DC angle tower is 2 and they are arranged in parallel. The columns are connected by guy wires. The two ends of the guy wires are respectively fixed on the suspension sections of different columns. A crossbeam section is vertically connected to one of the columns. One end of the crossbeam section is connected to the suspension section of the column, and the other end is fixed on the column by a guy wire.

[0020] Preferably, it can also be combined into a DC straight tower. The number of columns of the DC straight tower is 3 and they are arranged in parallel. Adjacent two columns are connected by guy wires. The two ends of the guy wires are respectively connected to the suspension sections of different columns.

[0021] Preferably, it can also be combined into an AC angle tower. The number of columns of the AC angle tower is 2 and they are arranged side by side. The suspension sections between the columns are connected together by bolt connectors. A crossbeam section is vertically connected to one of the columns, and two crossbeam sections are vertically connected to the other column. One end of the crossbeam section is connected to the suspension section of the column, and the other end of the crossbeam section is fixed on the column by a guy wire.

[0022] Preferably, it can also be combined into a guyed V-shaped AC straight tower. The number of columns of the guyed V-shaped AC straight tower is 2 and they are arranged in a V shape. The columns are connected by guy wires. The two ends of the guy wires are respectively fixed on the suspension sections of different columns.

[0023] Preferably, it can also be combined into a guyed portal AC straight tower. The number of columns of the guyed portal AC straight tower is 2 and they are arranged in parallel. The columns are connected by guy wires. The two ends of the guy wires are respectively fixed on the suspension sections of different columns.

[0024] Preferably, the standard section of the column body is a rectangular frame structure. There are steps, guide angle steels and nylon pulleys on its side. The steps are located on the rear side of the standard section of the column body, and the guide angle steels and nylon pulleys are located on the front side of the standard section of the column body. The effective width of the steps for foot stepping is 150 mm.

[0025] Preferably, the guy wire section includes a standard guy wire section and a column transition section. The upper size and the lower size of the standard guy wire section are the same. The upper size of the column transition section is smaller than the lower size. The guy wire section is provided with a horizontal guy wire hanging point and a side column lower guy wire hanging point. The horizontal guy wire hanging point is located on the left side surface of the guy wire section, and the side column lower guy wire hanging points are located at two corners on the right side surface of the guy wire section.

[0026] Preferably, the standard section of the column body is divided into two types according to different sizes. The standard section of the column body with a larger size is used for the lower part of the column, and the standard section of the column body with a smaller size is used for the upper part of the column.

[0027] Preferably, the top section of the column is provided with ground wire suspension hanging points, ground wire strain hanging points, tower head stay cable hanging points, and jumper crossbeam stay cable hanging points. The ground wire suspension hanging point is located at the end of the top extension section of the top section of the column. The ground wire strain hanging points are distributed on the left and right sides in the middle of the top section of the column. The tower head stay cable hanging point is located on the front side in the middle of the top section of the column. The jumper crossbeam stay cable hanging point is located on the back side in the middle of the top section of the column.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The present invention realizes the modularization and universality of the emergency repair tower for UHV AC / DC transmission lines through the combination of columns, guy wires, stay cables, crossbeam sections, and conductor suspension insulator strings. The material of the column is Q355 low-alloy high-strength structural steel, which has the advantages of high strength, good toughness, and being conducive to welding.

[0030] The column includes: a base, a leg section, multiple standard column sections, a guy wire section, a hanging section, and a top section of the column. Each component of the column is convenient for transportation after being disassembled, and can be quickly assembled on-site according to the emergency repair needs after reaching the emergency repair point. The base and the column are connected by a hemispherical ball hinge, which can absorb vibration and deformation, reduce stress concentration and structural damage. The overall height of the emergency repair tower can be adjusted by the number of standard column sections to meet the requirements of pole erection under different suspension heights. The base and the column have a small overall floor area and can meet the emergency repair requirements of UHV dense channels. The modules removed after the emergency repair can be reused, saving economic costs.

[0031] The combination methods of the emergency repair tower include: DC corner tower, DC straight tower, AC corner tower, V-shaped guyed AC straight tower, and portal guyed AC straight tower, which can be quickly combined into different emergency repair towers according to the AC / DC voltage levels and the actual conditions of the damaged lines, improving the emergency repair efficiency of UHV lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the DC corner tower provided by the present invention;

[0033] Figure 2 Schematic diagram of the connection between the crossbeam section and the column of the DC corner tower provided by the present invention;

[0034] Figure 3 Schematic diagram of the DC straight tower provided by the present invention;

[0035] Figure 4 Schematic diagram of the AC corner tower provided by the present invention;

[0036] Figure 5 Schematic diagram of the connection between the crossbeam section and the column of the AC corner tower provided by the present invention;

[0037] Figure 6 Schematic diagram of the V-shaped guyed AC straight tower provided by the present invention;

[0038] Figure 7 Schematic diagram of the sliding door type AC straight tower provided by the present invention;

[0039] Figure 8 Schematic diagram of the connection between the column leg section and the base provided by the present invention;

[0040] Figure 9 Schematic diagram of the rear side structure of the standard column section provided by the present invention;

[0041] Figure 10 Schematic diagram of the front and rear side structure of the standard column section provided by the present invention;

[0042] Figure 11 Schematic diagram of the front side structure of the guy wire section provided by the present invention;

[0043] Figure 12 Schematic diagram of the upper structure of the guy wire section provided by the present invention;

[0044] Figure 13 Schematic diagram of the middle structure of the suspension wire section provided by the present invention;

[0045] Figure 14 Schematic diagram of the front side structure of the suspension wire section provided by the present invention;

[0046] Figure 15 Schematic diagram of the right side structure of the suspension wire section provided by the present invention;

[0047] Figure 16 Schematic diagram of the front side structure of the column top section provided by the present invention;

[0048] Figure 17 Schematic diagram of the side structure of the column top section provided by the present invention;

[0049] Figure 18 Schematic diagram of the middle structure of the column top section provided by the present invention.

[0050] Explanation of reference numerals: 1 - column; 2 - leg section; 3 - standard column section; 4 - guy wire section; 5 - suspension wire section; 6 - column top section; 7 - crossbeam section; 8 - stay cable; 9 - guy wire; 10 - conductor insulator string; 11 - base; 201 - hemispherical ball joint; 301 - step; 302 - guiding angle steel; 303 - nylon pulley; 401 - guy wire section horizontal stay cable hanging point; 402 - side column lower layer guy wire hanging point; 501 - conductor V string hanging point; 502 - suspension wire section horizontal stay cable hanging point; 503 - crossbeam and column connection node; 504 - side column upper layer guy wire hanging point; 505 - conductor tension hanging point; 601 - top extension section; 602 - earth wire suspension hanging point; 603 - tower head diagonal stay cable hanging point; 604 - earth wire tension hanging point; 605 - jumper crossbeam stay cable hanging point. Detailed implementation manners

[0051] Next, in conjunction with the accompanying drawings of the specification, the technical solutions in the embodiments of the present invention will be clearly and completely described.

[0052] As Figures 1 to 8 shown, the present invention provides a combined type transmission line emergency repair tower, including:

[0053] The column 1 includes: a base 11, a connecting leg section 2, a plurality of column body standard sections 3, a guy wire section 4, at least one hanging wire section 5, and a column top section 6. The base 11 is located at the bottommost end of the column 1. The lower end of the connecting leg section 2 is connected to the base 11 through a hemispherical ball hinge 201. The plurality of column body standard sections 3 are connected and fixed to the connecting leg section 2 by bolts. The guy wire section 4 and the hanging wire section 5 are distributed between the plurality of column body standard sections 3. The hanging wire section 5 is located above the guy wire section 4. The column top section 6 is located at the top of the column 1;

[0054] The conductor suspension insulator string 10 is suspended between two different hanging wire sections 5 or below the crossbeam section 8;

[0055] The guy wire 9 has one end fixed to the upper end of the column, and the fixed connection point of the other end is located on the ground or other fixed objects.

[0056] One end of the column 1 is fixed to the ground, and the number of columns is one or more. When the number of columns is multiple, the columns are connected by a connecting member.

[0057] When the number of columns is two, the two columns are combined in any of the following ways: side-by-side combination, parallel arrangement, or V-shaped arrangement; when the number of columns is greater than 2, the multiple columns are arranged in parallel.

[0058] When the columns are combined side by side, the connecting member is a bolt connecting member; when the columns are arranged in parallel or in a V-shaped arrangement, the connecting member is a cable 8.

[0059] Furthermore, as Figure 9 、 Figure 10 shown, the column body standard section 3 is a rectangular frame structure, and a step 301, a guide angle steel 302, and a nylon pulley 303 are provided on its side. The step 301 is located on the rear side of the column body standard section, and the guide angle steel 302 and the nylon pulley 303 are located on the front side of the column body standard section. The effective width of the step 303 for foot stepping is 150 mm.

[0060] Furthermore, as Figure 11 、 Figure 12 shown, the guy wire section 4 is a rectangular frame structure, which is divided into a standard guy wire section and a column transition section. A horizontal guy wire hanging point 401 and a side column lower guy wire hanging point 402 are provided on the upper part of the guy wire section 4. The horizontal guy wire hanging point 401 is located on the left side surface of the guy wire section, and the side column lower guy wire hanging point 402 is located at two corners on the right side surface of the guy wire section.

[0061] Furthermore, as Figures 13 to 15 shown, the hanging wire segment 5 is a rectangular frame structure, and the number thereof is one or more. A conductor V-string hanging point 501, a horizontal cable hanging point 502, a connecting node 503 between the crossbeam and the column, an upper stay wire hanging point 504 of the side column, and a conductor tension hanging point 505 are provided in the middle of the hanging wire segment 5. The conductor V-string hanging point 501 and the horizontal cable hanging point 502 are located on the same side of the hanging wire segment. The connecting node 503 between the crossbeam and the column is located on the opposite side of the conductor V-string hanging point 501 of the hanging wire segment. The upper stay wire hanging point 504 of the side column is located at two adjacent corners on the side of the hanging wire segment and adjacent to the connecting node 503 between the crossbeam and the column. The conductor tension hanging point 505 is located on two adjacent sides on one side of the conductor V-string hanging point 501 of the hanging wire segment.

[0062] Furthermore, as Figures 16 to 18 shown, the top column segment 6 is a rectangular frame structure and a top extension segment 601 is provided at its top. A ground wire suspension hanging point 602, a ground wire tension hanging point 604, a tower head stay cable hanging point 603, and a jumper crossbeam stay cable hanging point 605 are provided on the top column segment 6. The ground wire suspension hanging point 602 is located at the end of the top extension segment 601 at the top of the top column segment. The ground wire tension hanging point 604 is distributed on the left and right sides in the middle of the top column segment. The tower head stay cable hanging point 603 is located on the front side in the middle of the top column segment. The jumper crossbeam stay cable hanging point 605 is located on the back side in the middle of the top column segment.

[0063] Furthermore, the materials of the stay wire segment, the hanging wire segment, and multiple standard column sections of the column are Q355 low-alloy high-strength structural steel.

[0064] In the first embodiment of the present invention, a DC corner tower can be assembled, and its structure is as Figure 1 and Figure 2 shown: The number of the columns 1 of the DC corner tower is two and they are arranged in parallel. The columns 1 are connected by a stay cable 8, and both ends of the stay cable 8 are respectively fixed on the hanging wire segments 5 of different columns 1. A crossbeam segment 7 is vertically connected to one of the columns 1. One end of the crossbeam segment 7 is connected to the hanging wire segment 5 of the column, and the other end is fixed on the column 1 through the stay cable 8.

[0065] The DC corner tower is used for repairing DC corner transmission lines.

[0066] In the second embodiment of the present invention, a DC straight tower can also be assembled, and its structure is as Figure 3 shown: The number of the columns 1 of the DC straight tower is three and they are arranged in parallel. Two adjacent columns 1 are connected by a stay cable 8, and both ends of the stay cable 8 are respectively connected to different hanging wire segments 5.

[0067] The DC straight tower is used for repairing DC straight transmission lines.

[0068] In the third embodiment of the present invention, an AC corner tower can also be assembled, and its structure is as Figure 4 andFigure 5 As shown: The number of columns 1 of the AC corner tower is two and they are arranged in parallel combination. The hanging wire segments 5 are connected together between the columns 1 through bolt connectors. A crossbeam segment 7 is vertically connected to one of the columns 1, and two crossbeam segments 7 are vertically connected to the other column 1. One end of the crossbeam segment 7 is connected to the hanging wire segment 5 of the column 1, and the other end of the crossbeam segment 7 is fixed to the column through a cable 8.

[0069] The AC corner tower is used for repairing AC corner transmission lines.

[0070] In the fourth embodiment of the present invention, it can also be combined into a guyed V-shaped AC straight tower, and its structure is as Figure 6 shown: The number of columns 1 of the guyed V-shaped AC straight tower is two and they are arranged in a V shape. The columns 1 are connected by a cable 8, and the two ends of the cable 8 are respectively fixed to the hanging wire segments 5 of different columns 1.

[0071] In the fifth embodiment of the present invention, it can also be combined into a guyed portal-shaped AC straight tower, and its structure is as Figure 7 shown: The number of columns 1 of the guyed portal-shaped AC straight tower is two and they are arranged in parallel. The columns 1 are connected by a cable 8, and the two ends of the cable 8 are respectively fixed to the hanging wire segments 5 of different columns 1.

[0072] The guyed V-shaped AC straight tower and the guyed portal-shaped AC straight tower are used for repairing AC straight transmission lines, and the two tower types can be flexibly selected according to the terrain conditions.

[0073] Finally, it should be noted that: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined power transmission line emergency repair tower, characterized in that, The emergency repair tower includes a column, and the column includes: a guy wire section, at least one suspension section, and multiple standard column sections; the guy wire section, the suspension section, and the multiple standard column sections are sequentially connected according to the requirements of tower erection at different heights to form the column. The guy wire section and the suspension section are used to provide guy wire connection points and column connection points. The suspension section is also used to fix the conductor suspension insulator string.

2. The combined power transmission line emergency repair tower according to claim 1, wherein, The guy wire section is a rectangular frame structure, and at its upper part, there are guy wire horizontal cable hanging points and lower guy wire hanging points on the side columns.

3. The combined type transmission line emergency repair tower as claimed in claim 1, wherein The suspension section is a rectangular frame structure, and in its middle part, there are: conductor V-string hanging points, suspension section horizontal cable hanging points, connection nodes between the crossbeam and the column, upper guy wire hanging points on the side columns, and conductor tension hanging points. The conductor V-string hanging points and the horizontal cable hanging points are located on the same side in the middle of the suspension section, the connection node between the crossbeam and the column is located on the opposite side of the conductor V-string hanging points, the upper guy wire hanging points on the side columns are located at two adjacent corners on one side of the middle of the suspension section adjacent to the connection node between the crossbeam and the column, and the conductor tension hanging points are located on two adjacent sides on one side of the conductor V-string hanging points in the middle of the suspension section.

4. The combined power transmission line emergency repair tower according to claim 1, wherein The column also includes a base, a connecting leg section, and a column top section; the base is located at the bottom end of the column, the connecting leg section is connected to the base through a hemispherical ball joint, and the column top section is located at the top end of the column. The connecting leg section is an inverted triangular frame structure. The column top section is a rectangular frame structure, and at its top, there is a top extension section.

5. The combined power transmission line emergency repair tower according to claim 1, wherein, The materials of the guy wire section, the suspension section, and the multiple standard column sections are Q355 low-alloy high-strength structural steel.

6. The combined type transmission line emergency repair tower according to claim 1 or 4, characterized in that, One end of the column is fixed to the ground, and the number of columns is one or more. When there are multiple columns, the multiple columns are connected through connecting pieces.

7. The combined power transmission line emergency repair tower according to claim 6, characterized in that, When the number of columns is two, the two columns are combined in any of the following ways: side-by-side combination, parallel arrangement, or V-shaped arrangement; when the number of columns is greater than 2, the multiple columns are arranged in parallel.

8. A combined power transmission line emergency repair tower according to claim 6 and claim 7, characterized in that, When the columns are combined side by side, the connecting piece is a bolt connecting piece; when the columns are arranged in parallel or in a V-shaped arrangement, the connecting piece is a cable.

9. The combined power transmission line emergency repair tower according to claim 1, wherein, The emergency repair tower also includes a crossbeam section, and the crossbeam section is fixed on the suspension section, and the number of crossbeam sections is one or more.

10. A combined transmission line emergency repair tower according to any one of claims 1 to 9, characterized in that, The emergency repair tower also includes guy wires, one end of each guy wire is fixed on the column, and the fixed connection point of the other end is located on the ground or other fixed objects.

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