CN209817552U - Torch type single-loop transmission tower - Google Patents
Torch type single-loop transmission tower Download PDFInfo
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- CN209817552U CN209817552U CN201821940357.8U CN201821940357U CN209817552U CN 209817552 U CN209817552 U CN 209817552U CN 201821940357 U CN201821940357 U CN 201821940357U CN 209817552 U CN209817552 U CN 209817552U
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Abstract
The utility model discloses a torch type single-loop transmission tower, which belongs to the field of transmission towers and comprises an inverted trapezoidal insulating tower window connected with a tower body, wherein two ends of the top side of the inverted trapezoidal insulating tower window are respectively connected with a ground wire bracket, and the tops of two side edges of the inverted trapezoidal insulating tower window are respectively connected with a side cross arm; the middle part of the top edge of the inverted trapezoidal insulating tower window is provided with an insulating string, and the part of the inverted trapezoidal insulating tower window which is positioned in an insulating range formed by taking the insulating string as the center of a circle and taking the safe electric range as the radius is made of insulating materials; two side edges of the inverted trapezoidal insulating tower window are made of steel materials. The utility model discloses a be the star with the tower head design, reduced the tower window area greatly, and then reduced the volume and the weight of tower head, make its transmission line topography that can adapt to the comparatively soft and restricted area in corridor of geology use, can also reduce the use of tower material index, reduce material cost.
Description
Technical Field
The utility model belongs to high-voltage transmission tower field, specifically say and a torch type single-circuit transmission tower.
Background
The types of transmission towers used for high-voltage transmission are various, and different types are provided according to transmission circuits, functions, materials and the like. The single-loop transmission tower is one of the tower types, and the representative tower type comprises a wine glass tower and a cat-head tower.
The wine glass tower leads are horizontally arranged and are mostly applied to medium and heavy ice areas with larger ice coating thickness. When the conductor is applied to a heavily icing area, flashover caused by ice-shedding jumping of the conductor can be avoided. Cat head tower type wire adopts triangle-shaped arrangement, and this tower type occupies the corridor resource less, and is more extensive in light ice district's application, and with conventional 220kV transmission line as an example, cat head tower wire projection width that adopts triangle-shaped arrangement is 4.6 meters less than the wineglass tower, can obviously reduce the corridor width. However, the cat-head tower leads are arranged in a triangular mode, so that the height of the tower head is large, and the tower weight is heavy. When the breath height is the same, the weight of the cat-head tower is about 9 percent of that of the wine-cup tower. Crank arm K nodes are arranged on the structures of the wine glass tower and the cat-head tower.
From the above, the conventional tower types such as the wine glass tower and the cat-head tower cannot give consideration to both the tower material index and the corridor width. Meanwhile, for a large-span transmission tower, the load of the tower is far larger than that of a conventional tower, the span distances of the front side and the rear side are greatly different, and a very large out-of-plane torque exists. The crank arm K node has good performance when bearing in-plane load, but has phenomena of overlarge deformation, node instability and the like when bearing out-of-plane torque.
Based on this, the present application is proposed.
Disclosure of Invention
The problem of conventional tower type can't compromise tower material index and corridor width among the prior art for solving, there is the potential safety hazard in K node under the large span transmission line load simultaneously. The utility model provides a torch type single loop transmission tower, its tower is heavy than the two lighter, the corridor width is little, has cancelled the K node structure of traditional tower type simultaneously, can adapt to the big transmission line use of strideing across of single loop.
In order to achieve the above object, the utility model adopts the following scheme: the torch type single-loop transmission tower comprises a tower body and an inverted trapezoidal insulation tower window with tower legs connected with the tower body, wherein two ends of the top edge of the inverted trapezoidal insulation tower window are respectively connected with a ground wire support, and the tops of two side edges of the inverted trapezoidal insulation tower window are respectively connected with a side cross arm. And the middle part of the top edge of the inverted trapezoidal insulation tower window is provided with an insulation string, and the part of the inverted trapezoidal insulation tower window in an insulation range formed by taking the insulation string as the center of a circle and taking the safe electrical range as the radius is made of an insulation material (GFRP). Two side edges of the inverted trapezoidal insulating tower window are made of steel materials. The top ends of the two ground wire brackets are provided with downward-folded triangles, namely the top ends of the ground wire brackets are in a folded ear shape.
In the tower head structure, the middle phase lead passes through the middle of the tower body, the rod piece in the gap range is colored by adopting an insulating composite material member and adopting red pigment, and other two-phase leads are arranged on two sides of the tower head. Looking away from a distance, the ground wire cross arm, the side cross arm and the lower tower body are like a torch burning a bear. The utility model discloses in the side all is the description under the angle of elevation. The safe electrical range described in this application is the electrical gap or air insulation gap that should be present between the conductor and the tower head, and the calculation of this electrical gap is well known to those skilled in the art and is not described in detail here.
The utility model discloses further set up as follows: the side cross arm is horizontally arranged, and an I-shaped insulating string is arranged at the outer end point of the bottom of the lower horizontal side edge of the side cross arm.
The utility model discloses further set up as follows: the inverted trapezoidal insulating tower window is an inverted trapezoidal truss module formed by building a plurality of rod materials, a plurality of square trusses of the inverted trapezoidal truss module are formed by building a triangular truss, and a V-shaped window is arranged at the square truss or the triangular truss for hanging the insulating string.
The utility model discloses further set up as follows: the side of the square truss adopts a cross structure, and the triangular truss adopts a triangular structure.
The utility model discloses further set up as follows: the top of two sides of the inverted trapezoidal truss tower window coincides with the side edges of the side cross arms, and two sides of the top edge of the inverted trapezoidal truss tower window coincide with the ground wire support respectively, so that the ground wire support and the inverted trapezoidal insulation tower window can realize quick force transmission, and the load borne by a certain part is dispersed to other parts and structures, thereby helping to improve the load bearing capacity of the tower head.
The utility model discloses further set up as follows: the tower is a large span tower.
The utility model discloses further set up as follows: the inverted trapezoidal insulating tower window is internally provided with a horizontal connecting rod connected with the lower side edges of the cross arms at the two side edges.
Above-mentioned structure sets up the joint strength that can strengthen between limit cross arm and the trapezoidal insulating tower window of falling on the one hand, improves the wholeness of tower head, and on the other hand it can make the load that the limit cross arm received transmit to the opposite side through this horizontal connecting rod, realizes the quick transmission and the sharing of power to further improve the ability of bearing the load of tower head.
The utility model discloses further set up as follows: the middle part of the inverted trapezoidal insulating tower window comprises a vertical supporting component which is matched with the shape and the size of the tower body, and the vertical supporting component is arranged between the bottom edge and the top edge of the inverted trapezoidal insulating tower window. On one hand, the vertical supporting component effectively enhances the overall strength and integrity of the inverted trapezoidal insulating tower window and can help to reduce the load borne by the top edge; on the other hand, the connection between the tower head and the tower body can be more compact, and the load borne by the tower head can be transmitted to the tower body to reduce the load borne by the tower head.
The utility model discloses further set up as follows: in order to make the structure stable and light, the ground wire support and the side cross arm are triangular components.
The utility model discloses further set up as follows: the inverted trapezoidal component is of a symmetrical structure, and the side cross arms and the ground wire support are of the same structure and are symmetrically arranged on the inverted trapezoidal component.
The utility model discloses technical effect as follows: the utility model discloses an on the basis of falling trapezoidal insulating tower window, set up the ground wire support of orientation slope and the limit cross arm of level orientation respectively at its both ends, make it form the tower head structure of an approximate torch type, and set up insulating cluster in the inside of falling trapezoidal insulating tower window and be used for hanging well phase line, a plurality of connecting rods with be used for additional strengthening, it has dwindled cat head tower among the prior art greatly, the tower window that the phase line passed the design in the wine glass tower confession, thereby the corridor width has been reduced, the structure of tower head has been simplified, the tower material index has been reduced, the K node has been cancelled simultaneously, optimize the structural stress, make this tower head can adapt to and stride across transmission line greatly and use.
Due to the adoption of the insulating composite material, the size of the torch-type tower head is effectively compressed, the projection width of the lead is only 13.0 m, the height of the tower head is also only 5m, the structure of the tower head is simpler and more attractive, and the number of components is reduced, so that the index of the tower material can be saved by about 8 percent compared with that of a wine glass tower. Simultaneously, compare the K node structural arrangement form of traditional wineglass tower and cat head tower, the tower head structural arrangement of torch tower is more reasonable, and the structural design of falling trapezoidal insulating tower window also can eliminate the unstable hidden danger of shaft tower structure that the K node warp too big and arouse.
For wholeness, the intensity of the structure of strengthening tower head itself, the utility model discloses a complete symmetry design and a plurality of special connecting rods of arranging (the coincidence of side, V-arrangement window) when simplifying the tower head structure, make the tower head load homoenergetic that receives everywhere share to other structurally to ensure that the tower head structure atress is even, thereby improved the load bearing capacity.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a tower head according to an embodiment of the present invention.
Fig. 3 is a schematic view of the tower head shape according to the embodiment of the present invention.
Fig. 4 is a schematic structural view of an inverted trapezoidal tower window according to an embodiment of the present invention.
Shown in the figure: 1-a first ground wire support, 2-a second ground wire support, 3-a first side cross arm, 4-a second side cross arm, 5-an inverted trapezoidal insulating tower window and 6-a tower body;
101-inner side one, 102-outer side one;
201-inner side two, 202-outer side two;
301-upper side one, 302-lower side one;
401-upper side two, 402-lower side two;
500-mid-phase line hanging point/insulator, 501-left side, 502-bottom side, 503-right side, 504-top side/first horizontal link, 505-left coincident side, 506-right coincident side.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Example 1
As shown in fig. 1, this embodiment provides a torch-type single-loop large-span transmission tower, which includes a tower body 6, tower legs 7, and an inverted trapezoidal tower window 5 connected to the tower body 6, where the height between the tower body 6 and the tower legs is not less than 25 m. The inverted trapezoidal insulating tower window 5 is a symmetrical structure, the first ground wire support 1 and the second ground wire support 2 are symmetrically fixed at two ends (left end and right end in the figure) of the top side 504 of the inverted trapezoidal insulating tower window 5, and the first side cross arm 3 and the second side cross arm 4 are symmetrically fixed at the top of two side edges (left side edge 501 and right side edge 503 in the figure) of the inverted trapezoidal insulating tower window 5. The middle part of the top side 504 of the inverted trapezoid insulating tower window 5 is provided with an insulating string for hanging the middle phase conductor, so that the middle phase conductor passes through the middle of the tower body 6. The first ground wire support 1 and the second ground wire support 2 are triangular components with the same structure; the first side cross arm 3 and the second side cross arm 4 are triangular components with the same structure, and are horizontally arranged, and I-shaped insulating strings are arranged at the outer end points of the bottoms of the horizontal lower sides of the first side cross arm and the second side cross arm.
As shown in fig. 3, the inner side edge 101 and the outer side edge 102 of the first ground wire support 1, the upper side edge 301 and the lower side edge 302 of the first side cross arm 3, the left side edge 501, the bottom edge 502 and the right side edge 503 of the inverted trapezoid insulation tower window 5, the lower side edge 402 and the upper side edge 401 of the second side cross arm 4, the outer side edge 202 and the inner side edge 201 of the second ground wire support 2, and the top edge 504 of the middle portion of the inverted trapezoid insulation tower window 5 are combined to form a torch head, and combined with the vertical structure of the tower body 6, a torch shape is formed together. The bottom edge of the first ground wire support 1 coincides with the top edge 504 of the inverted trapezoidal insulating tower window 5, the coinciding position is a left coinciding edge 505, and correspondingly, the coinciding position of the second ground wire support 2 and the inverted trapezoidal insulating tower window 5 is a right coinciding edge 506. Both the left coincident edge 505 and the right coincident edge 506 are part of the top edge 504.
The included angle between the inner side edges of the first ground wire support 1 and the second ground wire support 2 and the top edge 504 of the inverted trapezoidal insulating tower window 5 is smaller than the included angle between the outer side edges of the first ground wire support and the second ground wire support and the top edge 504 of the inverted trapezoidal insulating tower window 5. Downward-folded triangles, namely, the shapes of folded lugs, are arranged at the top ends and the outer side edges of the first ground wire support 1 and the second ground wire support 2, so that the ground wires can be conveniently connected and the load can be balanced.
As shown in fig. 2 and 4, the inverted trapezoidal insulating tower window 5 is an inverted trapezoidal truss module constructed by a plurality of rods, and can be divided into four square trusses and a triangular truss: four square trusses are distributed in an inverted triangle shape, two square trusses are positioned in the center and are vertically superposed, and two square trusses are positioned on two sides and are horizontally distributed; the four triangular trusses are divided into two layers and are respectively arranged on two sides of the finished square truss. The triangular truss is an equilateral triangle, the length and the width of the equilateral triangle are equal to those of the square truss, and then the symmetrical equilateral inverted trapezoidal truss module is formed. In the square truss positioned in the center, the front side and the rear side of the square truss above the square truss adopt V-shaped window structures so as to facilitate the transmission cable to pass through, and the other square trusses adopt cross structures. The two triangular trusses above adopt a middle supporting rod structure, and the two triangular trusses below do not relate to a supporting structure.
In the inverted trapezoidal truss module with the structure, a support rod of the square truss positioned on the left side and a support rod of the square truss positioned in the center below are connected together to form a first inclined connecting rod which is connected with the inner side edges of the first ground wire support 1 and the second ground wire support 2 to form a straight line; the support rod of the square truss on the right side and the support rod of the square truss on the center below are connected together to form a second inclined connecting rod which is connected with the inner side edge of the second ground support 2 to form a straight line. The lower ends of the first inclined connecting rod and the second inclined connecting rod are connected to the opposite end points of the bottom edge 502 of the inverted trapezoidal insulating tower window 5, so that the force transmission paths among the first ground wire support 1, the second ground wire support 2 and the tower body 6 are the shortest straight lines.
The top edges 504 of the three upper square trusses are connected together to form a first horizontal connecting rod which connects the first ground wire support 1 and the second ground wire support 2, namely, the top edge 504 of the inverted trapezoidal insulating tower window 5, and the bottom edges 502 of the first horizontal connecting rod and the second horizontal connecting rod are connected with the lower sides of the first side cross arm 3 and the second side cross arm 4 to form a second horizontal connecting rod. The width of the bottom edge 502 of the square truss below is adapted to the width of the tower 6 connected with the square truss.
In the inverted trapezoidal truss module, as shown in fig. 2, an insulating material (GFRP material) is used for a part of the truss members located in an insulating range formed by taking the insulating string as a center and taking the safe electrical range as a radius. Two side edges of the inverted trapezoidal truss module and a vertical side edge of the triangular truss positioned above the inverted trapezoidal truss module can be made of steel materials; other structures of the tower head, namely the first ground wire support 1, the second ground wire support 2, the first side cross arm 3, the second side cross arm 4 and the like are all made of steel materials.
Taking a 220kV voltage torch type single-loop transmission tower as an example, the technical and economic indexes of three large-span tower type schemes are compared as shown in the following table:
TABLE 1
Note: the steel tube tower is measured by 0.9 ten thousand yuan/ton, and the composite material is measured by 2.5 ten thousand yuan/ton.
As can be seen from the table, the size of the tower head of the torch tower is greatly compressed due to the adoption of the insulating composite material, the projection width of the lead is only 13.0 m, the height of the tower head is also only 5m, the structure of the tower head is simpler and more attractive, and the number of components is reduced, so that the index of the tower material can be saved by about 8 percent compared with that of a wine glass tower. Simultaneously, compare the K node structural arrangement form of traditional wineglass tower and cat head tower, the tower head structural arrangement of torch tower is more reasonable, has eliminated the unstable hidden danger of shaft tower structure that K node warp too big and arouse, also is more suitable for to stride across greatly and uses.
Based on the above, the utility model provides a torch type tower head that is formed by falling trapezoidal insulating tower window 5 and two ground wire support, two limit cross arm combinations through designing the tower head for the torch type, has not only reduced the volume and the weight of tower window area, tower head, makes it can stride across transmission line greatly and use, reduction material cost of tower material index can also reduce. Furthermore, the utility model has the advantages of simple structure and reasonable design, intensity is high, and it has further reduced the construction degree of difficulty, helps shortening construction period.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (10)
1. Torch type single circuit transmission tower, including tower head, body of the tower and tower leg, its characterized in that: the tower head comprises an inverted trapezoidal insulating tower window connected with the tower body, two ends of the top edge of the inverted trapezoidal insulating tower window are respectively connected with a ground wire bracket, and the tops of two side edges of the inverted trapezoidal insulating tower window are respectively connected with a side cross arm; the middle part of the top edge of the inverted trapezoidal insulating tower window is provided with an insulating string, and the part of the inverted trapezoidal insulating tower window which is positioned in an insulating range formed by taking the insulating string as the center of a circle and taking the safe electric range as the radius is made of insulating materials; two side edges of the inverted trapezoidal insulating tower window are made of steel materials; the top ends of the two ground wire brackets are provided with triangular brackets which are folded downwards.
2. The torch-type single-loop power transmission tower of claim 1, wherein: the side cross arm is horizontally arranged, and the bottom of the lower horizontal side of the side cross arm is provided with an I-shaped insulating string.
3. The torch-type single-loop power transmission tower of claim 1 or 2, wherein: the inverted trapezoidal insulating tower window is an inverted trapezoidal truss module built by a plurality of rod materials; the inverted trapezoidal truss module is formed by building a plurality of square trusses and triangular trusses, and a V-shaped window is arranged at the square truss or the triangular truss for hanging the insulation string.
4. A torch-type single-loop power transmission tower as defined in claim 3, wherein: the side of the square truss adopts a cross structure, and the triangular truss adopts a triangular structure.
5. The torch-type single-loop power transmission tower of claim 4, wherein: the tops of two side edges of the inverted trapezoidal truss tower window coincide with the side edges of the side cross arms, and two sides of the top edge of the inverted trapezoidal truss tower window coincide with the ground wire supports respectively.
6. A torch-type single-loop transmission tower as defined in any one of claims 1, 2, 4 and 5, wherein: the tower is a large span tower.
7. The torch-type single-loop power transmission tower of claim 1, wherein: the middle part of the inverted trapezoidal insulating tower window comprises a vertical supporting component which is matched with the shape and the size of the tower body, and the vertical supporting component is arranged between the bottom edge and the top edge of the inverted trapezoidal insulating tower window.
8. The torch-type single-loop power transmission tower of claim 1, wherein: the inverted trapezoidal truss tower window is internally provided with a horizontal connecting rod connected with the lower side edges of the cross arms at the two side edges.
9. A torch-type single-loop transmission tower as defined in any one of claims 1, 2, 4 and 5, wherein: the ground wire support and the side cross arm are triangular components.
10. A torch-type single-loop transmission tower as defined in any one of claims 1, 2, 4 and 5, wherein: the inverted trapezoidal truss tower window is of a symmetrical structure, and the side cross arm and the ground wire support are identical in structure and symmetrically arranged on the inverted trapezoidal truss tower window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821940357.8U CN209817552U (en) | 2018-11-23 | 2018-11-23 | Torch type single-loop transmission tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821940357.8U CN209817552U (en) | 2018-11-23 | 2018-11-23 | Torch type single-loop transmission tower |
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| CN209817552U true CN209817552U (en) | 2019-12-20 |
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| CN201821940357.8U Active CN209817552U (en) | 2018-11-23 | 2018-11-23 | Torch type single-loop transmission tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505451A (en) * | 2018-11-23 | 2019-03-22 | 绍兴大明电力设计院有限公司 | Torch-shaped single loop transmission tower |
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- 2018-11-23 CN CN201821940357.8U patent/CN209817552U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505451A (en) * | 2018-11-23 | 2019-03-22 | 绍兴大明电力设计院有限公司 | Torch-shaped single loop transmission tower |
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