CN215595153U - F-shaped terminal tower for 750kV single-loop power transmission line - Google Patents
F-shaped terminal tower for 750kV single-loop power transmission line Download PDFInfo
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- CN215595153U CN215595153U CN202121336401.6U CN202121336401U CN215595153U CN 215595153 U CN215595153 U CN 215595153U CN 202121336401 U CN202121336401 U CN 202121336401U CN 215595153 U CN215595153 U CN 215595153U
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Abstract
The utility model relates to the technical field of transmission line towers, and particularly discloses an F-shaped terminal tower for a 750kV single-loop transmission line. According to the utility model, the mode that all the conductors are hung on the tower body is adopted, the jumper is hung on the cross arm side, and the winding and jumping mode is adopted, so that the width of the cross arm of the conductor is reduced, the width of a corridor is reduced, and the transformation of a transformer substation framework is avoided, thereby improving the comprehensive benefit and solving the problem that the requirement on the safety distance of a grounding body cannot be met in a T-shaped iron tower.
Description
Technical Field
The utility model belongs to the technical field of transmission line towers, and particularly relates to an F-shaped terminal tower for a 750kV single-loop transmission line.
Background
Currently, in the market, a terminal tower is generally used in power transmission to erect a wire cable to form a power transmission line. Most of conventional single-loop terminal towers are dry-shaped iron towers, and the arrangement mode of the wires is triangular arrangement. Taking a 750kV single-loop terminal tower of a 7A 5-DJ tower type as an example, the concrete structure of the tower is shown in FIG. 1, the maximum width of the cross arm of the conducting wire at two sides of the tower type is 31.59m (meters), and the width of the outgoing line channel is wide.
However, the above prior art solutions have the following drawbacks: because the cross arms of the wires on the two sides are longer and basically consistent with the space between the cross arms and the framework of the transformer substation, the side phase wires on the two sides of the incoming line gear form an electrical gap with the transition framework upright columns on the two sides of the interval of the Mogao III, and the electrical distance is 5.5 meters after the maximum windage yaw of the wires is considered, so that the requirement on the safety distance of a grounding body cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of an embodiment of the present invention is to provide an F-shaped terminal tower for a 750kV single-circuit power transmission line, so as to solve the problem that the conventional 750kV single-circuit terminal tower in the prior art proposed in the background art is mostly a t-shaped iron tower, and cannot meet the requirement for the safety distance of a ground body.
The embodiment of the utility model is realized in such a way that an F-shaped terminal tower for a 750kV single-loop power transmission line, in particular to a novel F-shaped terminal tower for a 750kV single-loop power transmission line, wherein the F-shaped terminal tower for the 750kV single-loop power transmission line comprises a base connected with the ground, and the F-shaped terminal tower for the 750kV single-loop power transmission line further comprises:
the lower end of the tower body is connected with the base to form an integral structure;
the plurality of wire hanging points are respectively arranged on the side surface of one side of the tower body and used for hanging wires;
the number of the outriggers is at least two, the outriggers are located on one side of the tower body where the wire hanging points are arranged so as to form an F-shaped structure together with the tower body, and the outriggers are used as wire cross arms for the jumper wire hanging points.
Preferably, the wire hanging points are provided with an upper layer, a middle layer and a lower layer which are sequentially arranged, the vertical distance between the wire corresponding to the wire hanging point on the upper layer and the wire corresponding to the wire hanging point on the middle layer is 19.2m, the vertical distance between the wire corresponding to the wire hanging point on the middle layer and the wire corresponding to the wire hanging point on the lower layer is 18m, and the horizontal displacement of the adjacent wires of the wire hanging points on the upper layer and the lower layer is not less than 2 m.
Preferably, the maximum width of the F-shaped terminal tower for the 750kV single-loop power transmission line is 17.5 m.
The utility model has the beneficial effects that:
compared with the prior art, the F-shaped terminal tower for the 750kV single-loop power transmission line comprises a base and a tower body, wherein a plurality of wire hanging points are arranged on the side surface of one side of the tower body and used for hanging wires; and at least two outriggers are arranged on one side of the tower body, which is provided with the wire hanging points, and form an F-shaped structure together with the tower body, and the outriggers are used as wire cross arms for the wire jumper hanging points. This an F shape terminal tower for 750kV single loop transmission line is through adopting the mode that the whole tower body of hanging of wire, and the cross arm side is hung to the wire jumper and all adopt around the mode of jumping, and the wire cross arm width reduces, has compressed the corridor width, avoids reforming transform the transformer substation framework, has solved the problem that does not have the requirement that can't satisfy ground body safe distance in the dry style of calligraphy iron tower to comprehensive benefit has been improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a conventional 750kV single-loop terminal tower.
Fig. 2 is a schematic structural diagram of an F-shaped terminal tower for a 750kV single-loop power transmission line according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a conventional 750kV single-loop terminal tower-entering framework according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an F-shaped terminal tower-entering framework for a 750kV single-loop power transmission line according to another embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating a connection relationship between an F-shaped terminal tower for a 750kV single-loop power transmission line and a conventional horizontally-arranged framework according to an embodiment of the present invention.
In the figure: 1-a dry-type iron tower hanging point; 2-a tower body; 3-wire hanging points; 4-an outrigger; 5-base.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clearly and clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments in the present application without any creative work belong to the protection scope of the present application.
In the description of the present invention, it should be understood that unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The above-indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Firstly, it should be noted that a conventional 750kV single-loop terminal tower is a dry-type iron tower, and takes a 750kV single-loop terminal tower of a 7a 5-DJ tower type as an example, a specific structure of the tower is shown in fig. 1, a maximum width of a wire cross arm at two sides of the tower is 31.59m, a width of an outgoing line channel is wide, a plurality of dry-type iron tower hanging points 1 are arranged on the dry-type iron tower, that is, as shown in fig. 3, a wire arrangement mode is a triangular arrangement.
Although the dry-type iron tower can be used for distribution of power transmission lines as a conventional single-loop terminal tower, the 750kV Dunhuang variable outlet line is influenced by a transition framework of a third serial bus of a transformer substation entering a main transformer, and the electrical clearance between the side phase conductors on the two sides of the inlet line gear and transition framework columns on the two sides of a MogaIII interval is caused by the fact that the side phase conductors on the two sides of the conventional single-loop terminal tower are longer in cross arm and basically consistent with the transformer substation framework in distance, the electrical distance after the maximum windage yaw of the conductors is considered to be 5.5 meters, and the requirement that the safety distance of 110 kV-750 kV overhead power transmission line design specification (GB 50545 overhead 2010) to a grounding body is more than 9.5 meters is not met.
To this end, an embodiment of the present invention provides an F-shaped terminal tower for a 750kV single-loop power transmission line, and as shown in fig. 2, a structural diagram of an F-shaped terminal tower for a 750kV single-loop power transmission line is provided for an embodiment of the present invention, where the F-shaped terminal tower for a 750kV single-loop power transmission line includes a base 5 for connecting with the ground, and the F-shaped terminal tower for a 750kV single-loop power transmission line further includes:
the tower body 2, the lower end of the tower body 2 is connected with the base 5 to form an integral structure;
the plurality of wire hanging points 3 are respectively arranged on the side surface of one side of the tower body 2, and the wire hanging points 3 are used for hanging wires;
the number of the outriggers 4 is at least two, the outriggers 4 are located on one side of the tower body 2 where the wire hanging points 3 are arranged so as to form an F-shaped structure together with the tower body 2, and the outriggers 4 are used as wire cross arms for jumper wire hanging points.
In the embodiment of the utility model, the F-shaped terminal tower for the 750kV single-loop power transmission line is a single-loop F-shaped terminal tower specially used for entering 750kV Dunhuang, three-phase wire hanging points 3 of the novel F-shaped terminal tower are all positioned near a tower body 2, and when the wire enters a framework, the electrical clearance of the wire to transition framework upright posts on two sides of a Mogao III interval reaches 11 meters, so that the specification requirement is met. Compared with the conventional terminal tower, the transformer substation framework needs to be modified, so that the related problems are more, the practicability is not high, the F-shaped terminal tower for the 750kV single-loop power transmission line provided by the utility model adopts the mode that all the leads are hung on the tower body 2, the jumper wires are hung on the cross arm side, all the leads are wound and jumped, the width of the cross arm of the lead is reduced, the width of a corridor is reduced, the transformation of the transformer substation framework is avoided, and the comprehensive benefit is obvious. It is proposed that the F-shaped terminal tower can be selectively used in locally restricted places by economic comparison.
Preferably, the number of the outriggers 4 is two, the outriggers 4 are arranged horizontally and are perpendicular to the side surface of the tower body 2, the outriggers 4 are positioned on one side of the tower body 2 where the wire hanging points 3 are arranged so as to form an F-shaped structure together with the tower body 2, and the outriggers 4 are used as wire cross arms for jumper hanging points.
In one example of the utility model, the F-shaped terminal tower for the 750kV single-loop power transmission line is connected with a conventional horizontal arrangement framework, and in order to avoid the wire crossing in the air, the mode shown in figure 5 is adopted. In fig. 5, a, b, and c respectively represent a lower wire hanging point, an upper wire hanging point, and a middle wire hanging point, and the left structure in the drawing represents a conventional horizontally arranged framework, and the right structure in the drawing is a simplified structural schematic diagram of an F-shaped terminal tower for a 750kV single-circuit transmission line in the present invention, and the conventional jumper arrangement mode is: the conventional single-loop tower side phase conductor and the jumper wire hanging point are located on the same plane, the winding and jumping mode is adopted in the middle phase, and the hanging points of the two are deviated. The wires and the jumper wire hanging points of all phases of the conventional double-loop are positioned on the same surface, and a straight-jump mode is adopted. According to the F-shaped terminal tower for the 750kV single-loop power transmission line, all the conductors are hung on the tower body 2, the jumper wires are hung on the cross arm side, all the conductors are in a winding and jumping mode, the aerial crossing of the conductors is avoided, the center of the span meets the minimum gap value between operating overvoltage phases, and the value is 5.4m for the 750kV line.
In another example of the present invention, a conventional single-loop terminal tower-in framework structure is shown in fig. 3, and correspondingly, the F-shaped terminal tower-in framework structure for a 750kV single-loop power transmission line is shown in fig. 4, the conventional 750kV single-loop terminal tower is a t-shaped iron tower, and the arrangement of the wires is in a triangular arrangement. Taking 7A 5-DJ tower type as an example, the maximum width of the wire cross arm on two sides of the tower type is 31.59m, and the width of the wire outlet channel is wider. However, the novel F-shaped terminal tower for the 750kV single-loop power transmission line is vertically arranged, and the wire hanging point is arranged on the tower body. And reasonably determining the distance between the upper layer and the lower layer of the wire according to the clearance circle, wherein the vertical distance between the upper layer, the middle layer and the lower layer of the wire is 19.2m and 18m respectively, and the horizontal displacement of the adjacent wires on the upper layer and the lower layer is not less than 2 m. The jumper wire adopts an overhanging bracket, the maximum width of the tower is compressed to 17.5m, and the width of a wire outlet channel is reduced by 14.09m compared with that of a conventional single-loop terminal tower.
In another example of the present invention, the specific structural form of the base 5 is not limited in the embodiment of the present invention, for example, the base 5 may be U-shaped, rectangular, triangular, L-shaped, etc., or a combination of the above structures, and may be adapted according to the installation environment.
Further, as a preferred embodiment of the present invention, the suspension of the wires is vertically aligned.
Further, as a preferred embodiment of the present invention, the wire hanging point 3 is provided with an upper layer, a middle layer and a lower layer which are sequentially arranged, a vertical distance between the wire of the upper layer and the wire of the middle layer is 18-20 m, a vertical distance between the wire of the middle layer and the wire of the lower layer is 17-19 m, and a horizontal displacement of adjacent wires is not less than 2 m.
In one example of the present invention, the vertical spacing between the wires of the upper layer and the wires of the middle layer is 18m, the vertical spacing between the wires of the middle layer and the wires of the lower layer is 17m, and the horizontal displacement of the adjacent wires is 2 m.
In yet another example of the present invention, in one example of the present invention, the vertical spacing between the wires of the upper layer and the wires of the middle layer is 20m, the vertical spacing between the wires of the middle layer and the wires of the lower layer is 19m, and the horizontal displacement of the adjacent wires is 2.2 m.
In yet another example of the present invention, in one example of the present invention, the vertical distance between the wire of the upper layer and the wire of the middle layer is 19m, the vertical distance between the wire of the middle layer and the wire of the lower layer is 18m, and the horizontal displacement of the adjacent wires is not less than 2 m.
Further, as a preferred embodiment of the present invention, the vertical distance between the conductive line of the upper layer and the conductive line of the middle layer is 19.2m, the vertical distance between the conductive line of the middle layer and the conductive line of the lower layer is 18m, and the horizontal displacement between the adjacent conductive lines of the upper layer and the lower layer is not less than 2 m.
Further, as a preferred embodiment of the present invention, the maximum width of the F-shaped terminal tower for the 750kV single-loop power transmission line is not more than 17.5 m.
Preferably, the maximum width of the F-shaped terminal tower for the 750kV single-loop power transmission line is 17.5m, namely the jumper wire adopts an outrigger, the maximum width of the tower is compressed to 17.5m, and the width of a wire outlet channel is reduced by 14.09m compared with that of a conventional single-loop terminal tower.
The implementation principle of the embodiment is as follows: a F shape terminal tower for 750kV single loop transmission line adopts the wire to hang the body of the tower entirely, and the cross arm side is hung to the wire jumper, all adopts around jumping the mode, and the cross arm width reduces, has compressed the corridor width, avoids reforming transform substation's framework, and the comprehensive benefit is obvious.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It is further to be understood that the foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a F shape terminal tower for 750kV single loop transmission line, includes base (5) that are used for being connected with ground, characterized in that, an F shape terminal tower for 750kV single loop transmission line still includes:
the tower body (2), the lower end of the tower body (2) is connected with the base (5) to form an integral structure;
the plurality of wire hanging points (3) are arranged on the side surface of one side of the tower body (2), and the wire hanging points (3) are used for hanging wires;
the tower body is provided with at least two outriggers (4), the outriggers (4) are located on one side of the tower body (2) where the wire hanging points (3) are arranged to form an F-shaped structure together with the tower body (2), and the outriggers (4) are used as wire cross arms for the jumper wire hanging points.
2. The F-terminal tower for a 750kV single-circuit transmission line of claim 1, wherein the suspension of the wire is in a vertical arrangement.
3. The F-shaped terminal tower for the 750kV single-loop power transmission line as claimed in claim 2, wherein the wire hanging points (3) are provided with an upper layer, a middle layer and a lower layer which are sequentially arranged, the vertical distance between the wire of the upper layer and the wire of the middle layer is 18-20 m, the vertical distance between the wire of the middle layer and the wire of the lower layer is 17-19 m, and the horizontal displacement of the adjacent wires is not less than 2 m.
4. The F-shaped terminal tower for the 750kV single-loop power transmission line as claimed in claim 3, wherein the vertical distance between the upper layer of wires and the middle layer of wires is 19.2m, the vertical distance between the middle layer of wires and the lower layer of wires is 18m, and the horizontal displacement between the adjacent wires of the upper layer and the lower layer is not less than 2 m.
5. The F-shaped terminal tower for the 750kV single-loop power transmission line according to any one of claims 1 to 4, wherein the maximum width of the F-shaped terminal tower for the 750kV single-loop power transmission line is not more than 17.5 m.
6. The F-shaped terminal tower for the 750kV single-loop power transmission line according to claim 5, wherein the maximum width of the F-shaped terminal tower for the 750kV single-loop power transmission line is 17.5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121336401.6U CN215595153U (en) | 2021-06-16 | 2021-06-16 | F-shaped terminal tower for 750kV single-loop power transmission line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121336401.6U CN215595153U (en) | 2021-06-16 | 2021-06-16 | F-shaped terminal tower for 750kV single-loop power transmission line |
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| CN215595153U true CN215595153U (en) | 2022-01-21 |
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| CN202121336401.6U Active CN215595153U (en) | 2021-06-16 | 2021-06-16 | F-shaped terminal tower for 750kV single-loop power transmission line |
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- 2021-06-16 CN CN202121336401.6U patent/CN215595153U/en active Active
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