CN202042854U - AC EHV double-circuit tension steel support - Google Patents
AC EHV double-circuit tension steel support Download PDFInfo
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- CN202042854U CN202042854U CN 201020690348 CN201020690348U CN202042854U CN 202042854 U CN202042854 U CN 202042854U CN 201020690348 CN201020690348 CN 201020690348 CN 201020690348 U CN201020690348 U CN 201020690348U CN 202042854 U CN202042854 U CN 202042854U
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Abstract
The utility model discloses an AC EHV (Extra-High Voltage) double-circuit tension steel support which is characterized in that a first main tower and a second main tower are comprised, leading lines in each circuit are directly hung on the tower bodies of the first main tower and the second main tower through tension strings, two jumpers of each leading line in each phase of the second main tower are horizontally arranged and are connected through a corresponding jumper string horizontally arranged. The AC EHV double-circuit tension steel support can effectively lower the recognized height and the total height and reduce the bending moment and the torque of the tower bodies, thereby reducing steel consumption and saving construction cost.
Description
Technical field
The utility model relates to a kind of double loop strain insulator steel tube tower, specifically, relates to a kind of double loop strain insulator steel tube tower that is used for AC extra high voltage.
Background technology
The strain tower of transmission line is being born the circuit corner, is bearing lead wire and earth wire tension force, is being prevented critical functions such as string falls, isolation accident, alignment, adjustment tower height, count for much with engineering safety, reliability, the extra high voltage line engineering requires high because of its width of corridor, social influence, environmental impact are bigger, the path restraining factors are more, therefore big, the average strain section length of buckling factor is shorter, and the strain tower quantity that circuit need use is many.
Common double loop strain tower, the umbellate form or the drum type strain tower that generally use in the promptly present engineering, its structural shape is shown in Figure 1A (drum type) and Figure 1B (umbellate form).
As seen from the figure, drum type and umbrella shape strain tower are named by its profile, and its essential characteristic all is that two loop line roads all hang on the same tower.
Common strain tower has following shortcoming:
(1) common strain tower is influenced by wire jumper and wire jumper string, and the minimum title of exhaling of iron tower is highly bigger, and interfloor distance is bigger, cross-arm length is longer, and the iron tower height is bigger, is increased with height and cross-arm length by the moment of flexure of leading, ground wire causes, moment of torsion, iron tower self wind load is also bigger, causes iron tower stressed bigger.
(2) single tower weight amount is bigger, and single column foot plinth concrete amount and earth volume are big, construction inconvenience.
(3) the iron tower root is opened greatly, flexibility and bad adaptability.Root is opened more than 20m, and on the hills, when use in the mountain region, the tower position is selected limited, flexibility and bad adaptability.
(4) iron tower test difficulty, the testing expenses height.Because iron tower height and load are the several times of common 500kV circuit, in the test site, the aspects such as assembling of equipment, material, test iron tower require highly, therefore test performance difficulty, testing expenses are also corresponding higher.
(5) between AC extra high voltage (greater than 750kV, for example 1000kV) circuit mutually during scissors crossing, the height of crossover tower is bigger.
(6) economy is bad.The requirement of aspects such as comprehensive above-mentioned tower height, basis, structure stress, scissors crossing, the technical and economic performance of common strain tower is relatively poor.
Therefore, need to propose a kind of new technology and solve above-mentioned any problem of the prior art.
Summary of the invention
A purpose of the present utility model is to overcome at least a in the existing above-mentioned defective of common strain tower.
According to first aspect of the present utility model, a kind of AC extra high voltage double loop strain insulator steel tube tower is provided, it is characterized in that, comprise first king-tower and second king-tower, lead in each loop directly hangs over by strain insulator-string on the body of the tower of described first king-tower and second king-tower, and two wire jumpers of each phase conductor on described second king-tower are horizontal arrangement and be connected to each other by horizontally disposed respective patch cord string all.
Preferably, two wire jumpers of each phase conductor on described second king-tower are connected to each other by the respective patch cord string that is arranged on the described first king-tower body of the tower.
Preferably, described first king-tower also be provided with described first king-tower on the corresponding jumper wire rack of each phase conductor, two wire jumpers of each phase conductor on described first king-tower are connected to each other by the wire jumper string that is arranged on the respective patch cord frame.
Preferably, described AC extra high voltage double loop strain insulator steel tube tower also comprises first secondary tower, two wire jumper horizontal arrangement of each phase conductor on described first king-tower and be connected to each other by the respective patch cord string that is arranged on the described first secondary tower body of the tower.
Preferably, the wire jumper string on described first secondary tower is set to level.
Preferably, described AC extra high voltage double loop strain insulator steel tube tower also comprises second secondary tower, and two wire jumpers of each phase conductor on described second king-tower are connected to each other by the respective patch cord string that is arranged on the described second secondary tower body of the tower.
Preferably, described second king-tower is an exterior angle side iron tower, and the wire jumper on described second king-tower is a flexible jumper.
Preferably, when described AC extra high voltage double loop strain insulator steel tube tower comprised first secondary tower and/or second secondary tower, the wire jumper on described first king-tower and second king-tower was all flexible jumper.
Preferably, the lead in a loop in the described double loop hangs on described first king-tower, and the lead in another loop hangs on described second king-tower.
AC extra high voltage of the present utility model double loop strain tower has greater advantage at aspects such as the heavy index of single Tata, wire jumper design, flexibility, security reliability, economy than common strain tower as the novel pattern of steel pipe iron tower.
Specifically, the embodiment of AC extra high voltage of the present utility model double loop strain tower can have one or more in the following characteristics:
(1) two loop line road branch hangs on two separate king-tower bodies of the tower, does not change between lead wire and earth wire and the alternate relativeness of lead simultaneously.Be arranged vertically up and down at phase conductor, horizontal-shift, ground wire are consistent with adjacent tangent tower to the aspects such as shielding angle of lead relatively between lead wire and earth wire.
(2) adopt horizontal arrangement wire jumper and wire jumper string, wire jumper no longer is the minimum restraining factors that claim height and conductor layer spacing of exhaling of strain tower.Because wire jumper and wire jumper string no longer adopt the common mode that is arranged vertically, therefore can effectively reduce tower height and interfloor distance.
(3) cancellation cross-arm.Behind the cancellation cross-arm, lead, the ground wire longitudinal load greatly reduces the moment of torsion of body of the tower, significantly improved the torsional property of iron tower, avoided top-heavy simultaneously, power performance is good, its anti-ice, wind resistance and anti-seismic performance obviously are better than common strain tower.
(4) king-tower and secondary tower can independent assortments.The implication of independent assortment is that major and minor tower and relative position thereof can change, the hanging point position of hanging point position on body of the tower of the not only distance variable between each tower position, and tower position elevation, single tower height degree, secondary tower position, lead, wire jumper string, wire jumper string drift angle etc. all can change as required.
(5) side iron tower in exterior angle uses flexible jumper to get final product.For the 1000kV UHV transmission line, when using common double loop strain tower, in order to control the wire jumper windage yaw, reduce tower height, to reduce cross-arm length, need to use hard jumper wire constructions such as squirrel-cage, single-column combination strain tower then can use common flexible jumper.
(6) single Ta Genkai is little, is convenient to the tower position and selects and basic type selecting.Adaptability to landform, geological conditions strengthens greatly.
With reference to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, it is clear that further feature of the present utility model and advantage thereof will become by following.
Description of drawings
The accompanying drawing that constitutes the part of specification has been described embodiment of the present utility model, and is used to explain principle of the present utility model together with the description.
With reference to accompanying drawing, according to following detailed, can be expressly understood the utility model more, wherein:
Figure 1A is the schematic diagram of AC extra high voltage drum type of the prior art double loop strain tower structure.
Figure 1B is the schematic diagram of AC extra high voltage umbellate form of the prior art double loop strain tower structure.
Fig. 2 is the schematic diagram according to single-column combination (twin columns) double loop strain insulator steel tube tower structure of an embodiment of the utility model.
Fig. 3 is the schematic diagram according to single-column combination (three posts) double loop strain insulator steel tube tower structure of another embodiment of the utility model.
Fig. 4 is the schematic diagram according to single-column combination (four posts) double loop strain insulator steel tube tower structure of another embodiment of the utility model.
Embodiment
Describe various exemplary embodiment of the present utility model in detail now with reference to accompanying drawing.It should be noted that: unless specify in addition, the parts of setting forth in these embodiments and positioned opposite, numeral expression formula and the numerical value of step do not limit scope of the present utility model.
Below be illustrative to the description only actually of at least one exemplary embodiment, never as any restriction to the utility model and application or use.
May not go through for the known technology of person of ordinary skill in the relevant, method and apparatus, but under suitable situation, described technology, method and apparatus should be regarded as authorizing the part of specification.
In shown here and all examples of discussing, it is exemplary that any occurrence should be construed as merely, rather than as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and the letter accompanying drawing below, therefore,, then in accompanying drawing subsequently, do not need it is further discussed in case be defined in a certain Xiang Zaiyi accompanying drawing.
Fig. 2 shows the single-column composite type double loop strain insulator steel tube tower (twin columns combination strain tower) according to an embodiment of the utility model.As shown in Figure 2, this AC extra high voltage double loop strain insulator steel tube tower is made up of first king-tower 201 and second king-tower 202.Owing to be AC power line, so each loop comprises three-phase conducting wire, two loops are totally six phase conductors.For can this six conductors of carry, first king-tower 201 and second king-tower 202 all be divided into three layers (upper strata, intermediate layer and lower floors), and every layer all is provided with the lead hanging point, makes that each layer can carry one phase conductor.Being provided with of two loops, a kind of preferred scheme is that a loop is arranged on first king-tower 201, and another loop is arranged on second king-tower 202.Certainly, those skilled in the art also can select other loop method to set up.
Specifically, each phase conductor all comprises input lead and output lead, is provided with strain insulator-string at each lead hanging point, and strain insulator-string is used to connect the line to the lead hanging point and makes lead and steel tube tower maintenance insulation.
More specifically, as shown in Figure 2, two loops comprise first loop and second loop.Wherein, the three-phase conducting wire in first loop hangs on first king-tower 201, and the three-phase conducting wire in second loop hangs on second king-tower 202.
On second king-tower 202, the input lead 211 of first phase in second loop is connected to strain insulator-string 213, and strain insulator-string 213 is connected to the strain insulator-string hanging point 219 that is positioned at second king-tower, 202 upper stratas.In addition, strain insulator-string hanging point 219 also is connected with strain insulator-string 214, and the other end of described strain insulator-string 214 connects the output lead 212 of first phase in second loop.
In high-tension line strain insulator iron tower, input lead can not directly be connected with output lead, but must connect by wire jumper.As shown in Figure 2, an end of wire jumper 215 is connected to input lead 211, and the other end of wire jumper 215 is connected to first end of wire jumper string 217.One end of wire jumper 216 is connected to output lead 212, and the other end also is connected to first end of wire jumper string 217.And second end of wire jumper string 217 is connected to the wire jumper hanging point 218 that is arranged at first king-tower, 201 upper stratas.Like this, realized being connected with wire jumper 216 by wire jumper 215 between input lead 211 and the output lead 212.In addition, wire jumper 215, wire jumper 216 and wire jumper string 217 all are horizontal arrangement.
Similarly, on second king-tower 202, the input lead 221 of second phase in second loop is connected to strain insulator-string 223, and strain insulator-string 223 is connected to the strain insulator-string hanging point 229 that is positioned at second king-tower, 202 intermediate layers.In addition, strain insulator-string hanging point 229 also is connected with strain insulator-string 224, and the other end of described strain insulator-string 224 connects the output lead 222 of second phase in second loop.
As shown in Figure 2, an end of wire jumper 225 is connected to input lead 221, and the other end of wire jumper 225 is connected to first end of wire jumper string 227.One end of wire jumper 226 is connected to output lead 222, and the other end also is connected to first end of wire jumper string 227.And second end of wire jumper string 227 is connected to the wire jumper hanging point 228 that is arranged at first king-tower, 201 intermediate layers.Like this, realized being connected with wire jumper 226 by wire jumper 225 between input lead 221 and the output lead 222.In addition, wire jumper 225, wire jumper 226 and wire jumper string 227 all are horizontal arrangement.
On second king-tower 202, the input lead 231 of the third phase in second loop is connected to strain insulator-string 233, and strain insulator-string 233 is connected to the strain insulator-string hanging point 239 that is positioned at second king-tower, 202 lower floors.In addition, strain insulator-string hanging point 239 also is connected with strain insulator-string 234, and the other end of described strain insulator-string 234 connects the output lead 232 of the third phase in second loop.
As shown in Figure 2, an end of wire jumper 235 is connected to input lead 231, and the other end of wire jumper 235 is connected to first end of wire jumper string 237.One end of wire jumper 236 is connected to output lead 232, and the other end also is connected to first end of wire jumper string 237.And second end of wire jumper string 237 is connected to the wire jumper hanging point 238 that is arranged at first king-tower, 201 lower floors.Like this, realized being connected with wire jumper 236 by wire jumper 235 between input lead 231 and the output lead 232.In addition, wire jumper 235, wire jumper 236 and wire jumper string 237 all are horizontal arrangement.
The mode of the wire jumper of second king-tower 202 and wire jumper string horizontal arrangement can reduce the floor height and the overall height of king-tower effectively, and can use common flexible jumper, reduces the complexity of wire jumper and wire jumper string, has both improved the security reliability of wire jumper, can reduce the wire jumper cost again.In addition, second king-tower 202 has also been cancelled the lead cross-arm, thereby makes the weight of iron tower and rigidity evenly diminish from bottom to top, has avoided top-heavy, has improved the safety reliability of iron tower.Simultaneously also save steel, reduced construction cost.
The carry mode of the input lead of first king-tower 201 and output lead and second king-tower 202 are similar, and difference is that the top of each lead hanging point on first king-tower 201 also is provided with jumper wire rack, is used for the wire jumper string of carry correspondence.Like this, for each phase on first king-tower, the wire jumper of input lead and output lead is connected to an end of respective patch cord string, and the other end of wire jumper string is connected to the jumper wire rack of top.
Specifically, on first king-tower 201, the input lead 241 of first phase in first loop is connected to strain insulator-string 243, and strain insulator-string 243 is connected to the strain insulator-string hanging point 249 that is positioned at first king-tower, 201 upper stratas.In addition, strain insulator-string hanging point 249 also is connected with strain insulator-string 244, and the other end of described strain insulator-string 244 connects the output lead 242 of first phase in first loop.
As shown in Figure 2, an end of wire jumper 245 is connected to input lead 241, and the other end of wire jumper 245 is connected to first end of wire jumper string 247.One end of wire jumper 246 is connected to output lead 242, and the other end also is connected to first end of wire jumper string 247.And second end of wire jumper string 247 is connected to the wire jumper hanging point 248 on the jumper wire rack 294 that is arranged at first king-tower, 201 upper stratas.Like this, realized being connected with wire jumper 246 by wire jumper 245 between input lead 241 and the output lead 242.
On first king-tower 201, the input lead 251 of second phase in first loop is connected to strain insulator-string 253, and strain insulator-string 253 is connected to the strain insulator-string hanging point 259 that is positioned at first king-tower, 201 intermediate layers.In addition, strain insulator-string hanging point 259 also is connected with strain insulator-string 254, and the other end of described strain insulator-string 254 connects the output lead 252 of second phase in first loop.
As shown in Figure 2, an end of wire jumper 255 is connected to input lead 251, and the other end of wire jumper 255 is connected to first end of wire jumper string 257.One end of wire jumper 256 is connected to output lead 252, and the other end also is connected to first end of wire jumper string 257.And second end of wire jumper string 257 is connected to the wire jumper hanging point 258 on the jumper wire rack 295 that is arranged at first king-tower, 201 intermediate layers.Like this, realized being connected with wire jumper 256 by wire jumper 255 between input lead 251 and the output lead 252.
On first king-tower 201, the input lead 261 of the third phase in first loop is connected to strain insulator-string 263, and strain insulator-string 263 is connected to the strain insulator-string hanging point 269 that is positioned at first king-tower, 201 lower floors.In addition, strain insulator-string hanging point 269 also is connected with strain insulator-string 264, and the other end of described strain insulator-string 264 connects the output lead 262 of the third phase in first loop.
As shown in Figure 2, an end of wire jumper 265 is connected to input lead 261, and the other end of wire jumper 265 is connected to first end of wire jumper string 267.One end of wire jumper 266 is connected to output lead 262, and the other end also is connected to first end of wire jumper string 267.And second end of wire jumper string 267 is connected to the wire jumper hanging point 268 on the jumper wire rack 296 that is arranged at first king-tower, 201 lower floors.Like this, realized being connected with wire jumper 266 by wire jumper 265 between input lead 261 and the output lead 262.
This arrangement of first king-tower 201 has replaced the lead cross-arm with the jumper wire rack of very light in weight, thereby makes the weight of iron tower and rigidity evenly diminish from bottom to top, has avoided top-heavy, has improved the safety reliability of iron tower.Simultaneously also save steel, reduced construction cost.
In addition, strain tower as shown in Figure 2 is an angle tower, wherein has certain angle between the input and output lead, for example 30 degree.First king-tower 201 is an interior angle side iron tower, and second king-tower 202 is an exterior angle side iron tower, can use flexible jumper on second king-tower 202.
Fig. 3 shows another embodiment (three column combination strain towers) according to technical solutions of the utility model.This embodiment comprises first king-tower 301, second king-tower 302 and first secondary tower 303.In this embodiment, equally first loop is hung on first king-tower 301, second loop is hung on second king-tower 302.Wherein, the structure of second king-tower 302 is identical with the structure of second king-tower 202 in embodiment illustrated in fig. 2.
As shown in Figure 3, on second king-tower 302, the input lead 311 of first phase in second loop is connected to strain insulator-string 313, and strain insulator-string 313 is connected to the strain insulator-string hanging point 319 that is positioned at second king-tower, 302 upper stratas.In addition, strain insulator-string hanging point 319 also is connected with strain insulator-string 314, and the other end of described strain insulator-string 314 connects the output lead 312 of first phase in second loop.One end of wire jumper 315 is connected to input lead 311, and the other end of wire jumper 315 is connected to first end of wire jumper string 317.One end of wire jumper 316 is connected to output lead 312, and the other end also is connected to first end of wire jumper string 317.And second end of wire jumper string 317 is connected to the wire jumper hanging point 318 that is arranged at first king-tower, 301 upper stratas.Like this, realized being connected with wire jumper 316 by wire jumper 315 between input lead 311 and the output lead 312.In addition, wire jumper 315, wire jumper 316 and wire jumper string 317 all are horizontal arrangement.
In addition, on second king-tower 302, the input lead 321 of second phase in second loop is connected to strain insulator-string 323, and strain insulator-string 323 is connected to the strain insulator-string hanging point 329 that is positioned at second king-tower, 302 intermediate layers.In addition, strain insulator-string hanging point 329 also is connected with strain insulator-string 324, and the other end of described strain insulator-string 324 connects the output lead 322 of second phase in second loop.One end of wire jumper 325 is connected to input lead 321, and the other end of wire jumper 325 is connected to first end of wire jumper string 327.One end of wire jumper 326 is connected to output lead 322, and the other end also is connected to first end of wire jumper string 327.And second end of wire jumper string 327 is connected to the wire jumper hanging point 328 that is arranged at first king-tower, 301 intermediate layers.Like this, realized being connected with wire jumper 326 by wire jumper 325 between input lead 321 and the output lead 322.In addition, wire jumper 325, wire jumper 326 and wire jumper string 327 all are horizontal arrangement.
In addition, on second king-tower 302, the input lead 331 of the third phase in second loop is connected to strain insulator-string 333, and strain insulator-string 333 is connected to the strain insulator-string hanging point 339 that is positioned at second king-tower, 302 lower floors.In addition, strain insulator-string hanging point 339 also is connected with strain insulator-string 334, and the other end of described strain insulator-string 334 connects the output lead 332 of the third phase in second loop.One end of wire jumper 335 is connected to input lead 331, and the other end of wire jumper 335 is connected to first end of wire jumper string 337.One end of wire jumper 336 is connected to output lead 332, and the other end also is connected to first end of wire jumper string 337.And second end of wire jumper string 337 is connected to the wire jumper hanging point 338 that is arranged at first king-tower, 301 lower floors.Like this, realized being connected with wire jumper 336 by wire jumper 335 between input lead 331 and the output lead 332.In addition, wire jumper 335, wire jumper 336 and wire jumper string 337 all are horizontal arrangement.
The structure of first king-tower 301 and first secondary tower 303 is described below.
As shown in Figure 3, on first king-tower 301, first king-tower 201 among the layout of wire jumper hanging point, lead hanging point, strain insulator-string, input lead and output lead and Fig. 2 is similar, difference is, first secondary tower 303 is divided into three layers, each layer is provided with a wire jumper hanging point, has cancelled the jumper wire rack of first king-tower 301 simultaneously.The wire jumper of each phase conductor is mounted to by corresponding wire jumper string on the corresponding wire jumper hanging point of secondary tower 303 on first king-tower 301, and like this, can make the wire jumper of the king-tower 301 of winning and wire jumper string also is horizontal arrangement.Thereby further reduce the interlamellar spacing of king-tower, alleviate tower weight, make the weight of iron tower and rigidity evenly diminish from bottom to top, avoided top-heavy, improved the safety reliability of iron tower.Simultaneously also save steel, reduced construction cost.
Specifically, on first king-tower 301, the input lead 341 of first phase in first loop is connected to strain insulator-string 343, and strain insulator-string 343 is connected to the strain insulator-string hanging point 349 that is positioned at first king-tower, 301 upper stratas.In addition, strain insulator-string hanging point 349 also is connected with strain insulator-string 344, and the other end of described strain insulator-string 344 connects the output lead 342 of first phase in first loop.One end of wire jumper 345 is connected to input lead 341, and the other end of wire jumper 345 is connected to first end of wire jumper string 347.One end of wire jumper 346 is connected to output lead 342, and the other end also is connected to first end of wire jumper string 347.And second end of wire jumper string 347 is connected to the wire jumper hanging point 348 that is arranged at first secondary tower, 303 upper stratas.Like this, realized being connected with wire jumper 346 by wire jumper 345 between input lead 341 and the output lead 342.And wire jumper 345, wire jumper 346 and wire jumper string 347 all are horizontal arrangement.
In addition, on first king-tower 301, the input lead 351 of second phase in first loop is connected to strain insulator-string 353, and strain insulator-string 353 is connected to the strain insulator-string hanging point 359 that is positioned at first king-tower, 301 intermediate layers.In addition, strain insulator-string hanging point 359 also is connected with strain insulator-string 354, and the other end of described strain insulator-string 354 connects the output lead 352 of second phase in first loop.One end of wire jumper 355 is connected to input lead 351, and the other end of wire jumper 355 is connected to first end of wire jumper string 357.One end of wire jumper 356 is connected to output lead 352, and the other end also is connected to first end of wire jumper string 357.And second end of wire jumper string 357 is connected to the wire jumper hanging point 358 that is arranged at first secondary tower, 303 intermediate layers.Like this, realized being connected with wire jumper 356 by wire jumper 355 between input lead 351 and the output lead 352.And wire jumper 355, wire jumper 356 and wire jumper string 357 all are horizontal arrangement.
In addition, on first king-tower 301, the input lead 361 of the third phase in first loop is connected to strain insulator-string 363, and strain insulator-string 363 is connected to the strain insulator-string hanging point 369 that is positioned at first king-tower, 301 lower floors.In addition, strain insulator-string hanging point 369 also is connected with strain insulator-string 364, and the other end of described strain insulator-string 364 connects the output lead 362 of the third phase in first loop.One end of wire jumper 365 is connected to input lead 361, and the other end of wire jumper 365 is connected to first end of wire jumper string 367.One end of wire jumper 366 is connected to output lead 362, and the other end also is connected to first end of wire jumper string 367.And second end of wire jumper string 367 is connected to the wire jumper hanging point 368 that is arranged at first secondary tower, 303 lower floors.Like this, realized being connected with wire jumper 366 by wire jumper 365 between input lead 361 and the output lead 362.And wire jumper 365, wire jumper 366 and wire jumper string 367 all are horizontal arrangement.
Among the embodiment shown in Figure 3, wire jumper and wire jumper string on first king-tower 301 and second king-tower 302 all are horizontal arrangement, effectively reduce interlamellar spacing and tower height.And cancelled cross-arm, the moment of flexure, the moment of torsion that act on body of the tower portion are also greatly reduced.Alleviated tower weight, improved the stability and the reliability of body of the tower, for this three column combination double loop strain towers, not only the exterior angle side can be used flexible jumper, and owing to had first secondary tower, so the interior angle side also can be used flexible jumper.
Fig. 4 shows another embodiment (four column combination strain towers) according to technical solutions of the utility model.This embodiment comprises first king-tower 401, second king-tower 402, first secondary tower 412 and second secondary tower 413.Wherein, structure and Fig. 3 of first king-tower 401 and first secondary tower 412 are similar, and difference is to have cancelled the wire jumper hanging point on first king-tower 401.
Difference between second king-tower 302 among second king-tower 402 and Fig. 3 is, second secondary tower 413 is provided with three wire jumper hanging points, wire jumper on second king-tower 402 is series-connected to respective patch cord hanging point on second secondary tower 413 by wire jumper, and still flatly arrange wire jumper and wire jumper string, similar with three column combination double loop strain towers shown in Figure 3, four column combination double loop strain towers shown in Figure 4 also can use flexible jumper in interior angle side and exterior angle side.
Though in the illustrated embodiment, the lead hanging point of each king-tower is set to drum type in the above, it will be appreciated by those skilled in the art that and to adopt other type according to the needs of practical application, for example umbellate form etc.
Top emphasis has been described basic structure of the present utility model and main technical schemes, and those skilled in the art can select other various parameters according to practical situations according to prompting of the present utility model.In order to save space, just no longer repeat here.
Single-column combination double loop strain insulator steel tube tower is better than common double loop strain tower aspect technical-economic index, all safer at aspects such as test, construction, operation maintenance simultaneously, convenient.
(1) compare with common strain tower, the minimum overall height of single-column combination strain tower reduces about 9.0m, and main force's tower overall height slightly reduces.
(2) under the tension force situation constant with using span, single-column combination strain tower also greatly reduces the moment of flexure, the moment of torsion that act on body of the tower portion owing to cancelled cross-arm, compares with common strain tower, and single basic tower weight amount is less, sees following table for details.
The heavy contrast table of double loop of the present utility model strain insulator steel tube tower and common drum type Tata
Annotate: (1) is example with the result of calculation of 20-40 ° of corner strain insulator, 32m/s wind, 10mm icing design condition.
(2) desirable three column combination towers be the levels spacing from being respectively 12m, 11m, the situation of secondary tower is arranged.
(3) the twin columns combined column is that the utility model levels spacing of recommending is from being respectively 21m, 20m, no secondary tower, the situation of the hard wire jumper of one-sided use (side second king-tower in exterior angle does not have jumper wire rack, and interior angle side first king-tower has jumper wire rack).
(3) wire jumper of strain tower of the present utility model is arranged horizontally, and all can use (or part is used) common flexible jumper, reduces the complexity of wire jumper and wire jumper string structure, has both improved the security reliability of wire jumper, can reduce the wire jumper cost again.
(4) because of in the strain tower of the present utility model, each single tower basic less, buried depth is more shallow, compares with common strain tower, and when adopting the heavy excavation basis, total amount of concrete on strain tower of the present utility model basis saves about 20%, and total earth volume remains basically stable.
When (5) intersecting mutually with extra-high voltage AC circuit, crossed line can use strain tower of the present utility model, can effectively reduce the leap tower height, ideally can reduce more than the 10m.
(6) among strain tower of the present utility model embodiment, adopt two cylindricality iron towers to support a loop line road respectively, obviously reduced because of strain tower and fallen the risk that tower causes two loop line roads to destroy simultaneously.In addition, strain tower of the present utility model directly hangs over lead on the body of the tower, owing to obviously reduced the arm of force, the body of the tower torsional property is outstanding.Common strain tower is by disconnected two phase conductors design, and each king-tower of strain tower of the present utility model is all by disconnected two phase conductors design, and just two king-towers can bear four phase conductors altogether and break simultaneously, anti-ice, resists the performance that breaks to significantly improve.Strain tower of the present utility model cancelled lead, ground wire cross-arm (interior angle tower still has the jumper wire rack of very light in weight), the weight and the rigidity of iron tower evenly diminish from bottom to top, have avoided top-heavy, wind resistance, anti-seismic performance are superior.Thereby the safety reliability of strain tower of the present utility model is apparently higher than common strain tower.
(7) root of single tower is reduced for a short time, and the quantity of king-tower and secondary tower and relative position, relative distance can independent assortments, flexible arrangement, and is apparent, better than common strain tower to the adaptability of landform, geological conditions.
(8) strain tower of the present utility model only needs one of them king-tower is tested at the trial, and testing expenses and material usage significantly reduce.
(9) strain tower of the present utility model also has many advantages aspect construction.
Single tower of strain tower of the present utility model is separate, and the scope of operation is not disturbed mutually, and the operation simultaneously of each tower is beneficial to the reduction of erection time, ensures the quality of products during construction.The volume and weight of single member reduces greatly, and the difficulty of construction transportation (especially under rough topography conditions such as mountain region, mire) and lifting reduces greatly.Whole tower height degree reduces, and the work high above the ground fail safe is more secure.For relatively poor geological conditions, common strain tower basic role power is very big, if adopt the heavy excavation basis, key dimension is very big, and it is difficult unusually to construct, and often is forced to adopt bored concrete pile foundation, and cost is very high.Because the basic role power of strain tower of the present utility model obviously reduces, and can obviously reduce the baseplate width and the buried depth on single basis, greatly facilitates construction, still can use the heavy excavation basis under relatively poor geological conditions; In the more shallow areas of underground water such as network of waterways mires, it is more convenient to construct.
(10) advantage of strain tower of the present utility model aspect operation maintenance.
Twice lead is hung on two principal post towers, and whole tower all is subjected to the shortcoming of disturbance when having avoided under pair time common tower situation external disturbance being arranged, and independence and disturbance rejection are strong, the safety reliability height.More apparent advantage when use in abundant at underground mineral, as surface subsidence might to occur area.
Though specific embodiments more of the present utility model are had been described in detail by example, it should be appreciated by those skilled in the art that above example only is in order to describe, rather than in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, can under the situation that does not break away from scope and spirit of the present utility model, above embodiment be made amendment.Scope of the present utility model is limited by claims.
Claims (9)
1. AC extra high voltage double loop strain insulator steel tube tower, it is characterized in that, comprise first king-tower and second king-tower, lead in each loop is directly hung to by strain insulator-string on the body of the tower of described first king-tower and second king-tower, and two wire jumpers of each phase conductor on described second king-tower are horizontal arrangement and be connected to each other by horizontally disposed respective patch cord string all.
2. AC extra high voltage according to claim 1 double loop strain insulator steel tube tower is characterized in that, two wire jumpers of each phase conductor on described second king-tower are connected to each other by the respective patch cord string that is arranged on the described first king-tower body of the tower.
3. AC extra high voltage according to claim 1 double loop strain insulator steel tube tower, it is characterized in that, described first king-tower also be provided with described first king-tower on the corresponding jumper wire rack of each phase conductor, two wire jumpers of each phase conductor on described first king-tower are connected to each other by the wire jumper string that is arranged on the respective patch cord frame.
4. AC extra high voltage according to claim 1 double loop strain insulator steel tube tower, it is characterized in that, also comprise first secondary tower, two wire jumper horizontal arrangement of each phase conductor on described first king-tower and be connected to each other by the respective patch cord string that is arranged on the described first secondary tower body of the tower.
5. AC extra high voltage according to claim 4 double loop strain insulator steel tube tower is characterized in that, the wire jumper string on described first secondary tower is set to level.
6. AC extra high voltage according to claim 1 double loop strain insulator steel tube tower is characterized in that, also comprises second secondary tower, and two wire jumpers of each phase conductor on described second king-tower are connected to each other by the respective patch cord string that is arranged on the described second secondary tower body of the tower.
7. AC extra high voltage according to claim 1 double loop strain insulator steel tube tower is characterized in that, described second king-tower is an exterior angle side iron tower, and the wire jumper on described second king-tower is a flexible jumper.
8. according to claim 4 or 6 described AC extra high voltage double loop strain insulator steel tube towers, it is characterized in that the wire jumper on described first king-tower and second king-tower is all flexible jumper.
9. AC extra high voltage according to claim 1 double loop strain insulator steel tube tower is characterized in that, the lead in a loop in the described double loop hangs on described first king-tower, and the lead in another loop hangs on described second king-tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020690348 CN202042854U (en) | 2010-12-30 | 2010-12-30 | AC EHV double-circuit tension steel support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020690348 CN202042854U (en) | 2010-12-30 | 2010-12-30 | AC EHV double-circuit tension steel support |
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| CN202042854U true CN202042854U (en) | 2011-11-16 |
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| CN 201020690348 Expired - Fee Related CN202042854U (en) | 2010-12-30 | 2010-12-30 | AC EHV double-circuit tension steel support |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644400A (en) * | 2012-03-28 | 2012-08-22 | 江苏昆山通用电气有限公司 | Combined strain tower |
| CN105449616A (en) * | 2015-12-31 | 2016-03-30 | 国网浙江奉化市供电公司 | Improvement device of dual-loop overhead circuit |
| GB2537082A (en) * | 2014-10-06 | 2016-10-12 | Enserve Group Ltd | Connection mast |
-
2010
- 2010-12-30 CN CN 201020690348 patent/CN202042854U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644400A (en) * | 2012-03-28 | 2012-08-22 | 江苏昆山通用电气有限公司 | Combined strain tower |
| GB2537082A (en) * | 2014-10-06 | 2016-10-12 | Enserve Group Ltd | Connection mast |
| GB2537082B (en) * | 2014-10-06 | 2020-04-22 | The Freedom Group Of Companies Ltd | Connection mast |
| CN105449616A (en) * | 2015-12-31 | 2016-03-30 | 国网浙江奉化市供电公司 | Improvement device of dual-loop overhead circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: CHINA POWER ENGINEERING CONSULTING (GROUP) CORPORATION Patentee after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Patentee after: Hennan Electric Power Survey & Design Institute Patentee after: Co., Ltd of Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Patentee after: Co., Ltd of Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Patentee after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Power Engineering Consulting Group Corporation Patentee before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation Patentee before: Hennan Electric Power Survey & Design Institute Patentee before: Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group Patentee before: Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Cor Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee before: North China Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20181230 |