CN202090670U - Double-circuit suspension corner tower - Google Patents

Abstract

The utility model discloses a double-circuit hanging corner tower, which is characterized in that it comprises a ground wire cross arm, an upper wire cross arm, a middle wire cross arm, a lower wire cross arm, a tower body and tower legs, and the ground wire cross arm Connected to both ends of the upper conductor cross-arm, the upper conductor cross-arm, the middle conductor cross-arm and the lower conductor cross-arm are respectively connected to the tower body, and the tower body is connected to the tower legs, so that the entire corner tower is fixed to the ground Above, the main material of the corner tower is steel pipe. The hanging corner steel pipe tower of the utility model can be applied in the 1000kV AC ultra-high voltage double-circuit line on the same tower. In addition to the advantages of the hanging corner tower used in the original transmission line, the main material of the tower is all steel pipe components, greatly The iron tower index has been reduced, and it has been widely used in engineering.

Description

Double loop hanging corner tower

technical field

The utility model relates to a hanging corner tower, in particular to a hanging corner tower with double circuits on the same tower which is suitable for AC UHV. the

Background technique

Suspended corner towers have been widely used in 500kV and 750kV EHV lines in previous engineering designs. After adopting the hanging corner tower, it can effectively reduce the length of the tension section of the line, save the corridor, the number of insulators, the index of the iron tower and the amount of foundation concrete, so as to better reduce the project investment. the

However, in the AC 1000kV UHV AC transmission line, various electrical clearances, string lengths, and wind deflection of the iron tower have put forward higher requirements. In order to meet these requirements, the height of the iron tower had to be increased, and the distance between the cross-arms had to be increased. A problem that followed was that the final weight of the iron tower was too large and the steel consumption was too large. Another problem is that the structure of the main material nodes of the iron tower is complicated, and the installation and construction become more difficult. the

Therefore, there is a need to propose a new technology to solve any of the above-mentioned problems in the prior art. the

Contents of the invention

One purpose of the utility model is to provide a hanging corner tower, which can reduce the steel consumption of the iron tower. the

Another object of the present invention is to provide a simple joint structure, which makes construction and installation easy. the

According to the first aspect of the utility model, there is provided a double-loop hanging corner tower, including a ground wire cross arm, an upper wire cross arm, a middle wire cross arm, a lower wire cross arm, a tower body and a tower leg, and the ground wire The cross arm is connected to both ends of the upper conductor cross arm, the upper conductor cross arm, the middle conductor cross arm and the lower conductor cross arm are respectively connected to the tower body, and the tower body is connected to the tower legs, so that the entire corner tower is fixed On the ground, the main material of the corner tower is steel pipe. the

Preferably, the steel pipes are connected together by a flashboard. the

Preferably, the upper conductor cross-arm, the middle conductor cross-arm and the lower conductor cross-arm are connected to the tower body through plug-in boards respectively. the

Preferably, the board is a U-shaped board, a C-shaped board or an X-shaped board. the

Preferably, the double-loop suspension corner tower further includes a plurality of insulator strings connected to the two ends of the upper conductor cross-arm, the middle conductor cross-arm and the lower conductor cross-arm. the

Preferably, the windage angle of the insulator string is 58.66-72.65 degrees. the

Preferably, the length of the insulator string is 12.8 meters, the outer overvoltage gap value is 6.7 meters, and the inner overvoltage gap value is 6.0 meters. the

Preferably, the horizontal distance between the ground wires is 51.1 meters. the

The advantages of the utility model include at least one of the following:

The hanging corner steel pipe tower of the utility model can be applied in the 1000kV AC ultra-high voltage double-circuit line on the same tower. In addition to the advantages of the hanging corner tower used in the original transmission line, the main material of the tower is all made of steel pipe components, which is greatly improved. The iron tower index has been reduced, and it has been widely used in engineering. the

The steel pipe joints are connected by inserting plates, the joint structure is simple, and the construction and installation are convenient. the

Other features and advantages of the present invention will become clear through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. the

Description of drawings

The accompanying drawings, which constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. the

With reference to accompanying drawing, according to following detailed description, can understand the utility model more clearly, wherein:

FIG. 1 is a diagram illustrating a corner tower according to an embodiment of the present invention. the

2A-2C are flowcharts illustrating an embodiment of the present invention. the

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. the

The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use. the

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. the

In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values. the

It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures. the

Fig. 1 is a schematic diagram of an AC UHV dual-circuit hanging corner tower on the same tower according to an embodiment of the present invention. the

As shown in the figure, in order to reduce the amount of steel consumption, the main material of the tower is steel pipe members, and the specific structure is as follows. the

The steel pipe tower 201 includes a tower leg 202 , a tower body 203 and a cross arm, wherein the cross arm is divided into a wire cross arm and a ground wire cross arm 207 . The wire cross-arm includes an upper wire cross-arm 204 , a middle wire cross-arm 205 and a lower wire cross-arm 206 . Each wire cross arm is connected to the tower body 203 . the

In addition, the ground wire cross arm 207 is arranged at both ends of the upper wire cross arm 204 , and the ground wire is hung on the ground wire cross arm 207 . the

For the double-circuit conductor, the first circuit is arranged on the left side of the steel pipe tower 201 , and the second circuit is arranged on the right side of the steel pipe tower 201 . Specifically, the first phase conductor of the first circuit is hung on the left end of the upper conductor cross-arm 204 through the insulator string, and the second phase conductor of the first circuit is hung on the left end of the middle conductor cross-arm 205 through the insulator string. The third phase conductor is hung on the right end of the lower conductor cross arm 206 through the insulator string. The first phase conductor of the second circuit is hung on the right end of the upper conductor cross arm 204 through the insulator string, the second phase conductor of the second circuit is hung on the right end of the middle conductor cross arm 205 through the insulator string, and the third phase conductor of the second circuit is Hang on the right end of the lower conductor cross-arm 206 through the insulator string. the

The arrangement of the wires of the above two loops is only an example, and those skilled in the art may also arrange the wires in other suitable ways according to the actual situation. the

In one embodiment, the angle of rotation of the above-mentioned steel pipe tower is between 3-10 degrees, the vertically arranged conductors are 8XLGJ-630/45 aluminum-clad steel strands, the length of the insulator string is 12.8m, and the external overvoltage gap value It is 6.7m, the internal overvoltage gap is 6.0m, the operating voltage gap is 2.0m, and the insulator string wind deflection angle is between 58.66-72.65 degrees. the

In addition, under the premise of meeting the requirements of electrical clearance, string length, and wind deflection, the horizontal distance between the ground wires of an exemplary steel pipe tower according to the present utility model is 51.1m, the distance between the cross-arms of the upper conductors is 41m, and the distance between the cross-arms of the middle conductors is 51.1m. 45m, and the cross-arm spacing of the lower conductor is 43m. And the distance between the upper and middle conductor layers is 22.5m, and the distance between the middle and lower conductor layers is 22.0m. the

It should be understood that the specific parameters of the embodiments of the present invention given above are illustrative rather than limiting. Those skilled in the art can select appropriate parameters according to actual needs. the

In order to further simplify construction and installation, the steel pipe tower of the present utility model can also be connected by inserting plates. That is, the steel pipe nodes of the steel pipe tower adopt the way of inserting plates. The advantage of plug-in board connection is that it is simple in structure and convenient for construction and installation. the

The structure of the plugboard of the present utility model is introduced in detail below. the

In one embodiment, the oblique material and the main material are connected to each other through a plug-in plate. In a more specific embodiment, the inserting plate is a cross-shaped (also called X-shaped) inserting plate, which can be inserted into the socket formed on the oblique material, and joined with the oblique material by welding , and connected with the connecting piece on the main material through bolts. the

An example of a cross board connection is shown in FIG. 2C. One end of the inserting plate 307 is used for joining with the oblique material, and the opposite end is used for joining with the main material. There are various ways of joining. Preferably, the joint with the oblique material can be formed by welding, and the joint with the main material can be formed by bolts. the

The flashboard 307 is cross-shaped in a section perpendicular to its longitudinal axis, the branches 309 and 311 of the cross crossing each other (hence, also called X-shape), preferably perpendicular to each other. the

One end of the flashing plate 307 can be inserted into a corresponding socket formed on the oblique material 103, as shown in FIG. As an example, and considering the structural strength, the socket is preferably formed at the end of the oblique material 103 and along the axial direction of the oblique material 103 . In the actual iron tower installation project, considering the strict requirements for welding in the iron tower specification, the welding of the insert plate can be completed in the factory instead of on the field, so that the accuracy requirements for placing the workpiece can be reduced and the construction time can be shortened. However, it should be understood that this is not limiting. the

The other end of the insertion plate 307 opposite to the one end is used for joining with the main material. In one embodiment, on each branch of the cross shape of the board 307, a number of bolt holes are formed, so that the board can be connected to the main material (for example, with the connecting piece on the main material (such as, board or shoe board, etc.)) connection. Incidentally, the main material (or, for example, the connecting piece on the main material) naturally also has corresponding bolt holes formed thereon. However, as previously mentioned, the bolt holes and bolts are only preferred, because they are conducive to the installation outdoors, especially in the field, and advantageously shorten the construction period; however, this is not necessary for the realization of this embodiment of. Those skilled in the art will understand that the inserting plate and the main material can be connected or joined in various ways such as welding, hinge, etc., which is also within the scope of the present invention. the

As an implementation of another embodiment of the present utility model, as shown in FIG. 2B, a U-shaped insert plate 305 is inserted into the socket formed in the oblique material 103 on its longitudinal section, and is welded to It is firmly joined with the oblique material 103 . Similarly, the socket is preferably formed at the end of the oblique material 103 and along the axial direction of the oblique material 103 . A number of bolt holes are formed on the inserting plate 305 at a position away from the end inserted into the inclined material, for connecting with the main material through bolts. For example, a connecting piece (such as a connecting plate) of the main material can be inserted into the space 305 between the two branches of the U-shaped board, and the board is firmly joined to the connecting piece by bolts. Here, it goes without saying that corresponding bolt holes are also formed on the connecting piece. However, as previously described with respect to Figure 2C, these are merely exemplary and not limiting. For example, the plug-in board and the main material can be connected by various methods such as welding, hinge, etc. without departing from the scope of the present invention. the

It should be noted that the use of a cross-type plate is preferred for compression (or, bearing compressive stress) members or ends of members, and for tension (or, bearing tensile stress) members or ends of members The part can preferably use a U-shaped board. This is at least because the cross-type board connection has better structural strength. However, it should be understood that such arrangements are preferred only and not limiting. For example, the tension and compression ends of the oblique material 103 shown in FIG. 1 are connected by a cross-type plug-in plate. In fact, according to the disclosure of the utility model, those skilled in the art can freely choose the application mode of the plugboard according to actual needs, specification requirements, or their knowledge. the

The utility model also contemplates other forms of board connection. For example, FIG. 2A shows a type-C board 301 . The board is C-shaped in a cross-section perpendicular to its longitudinal axis, as shown in the cross-sectional view on the right side of FIG. 3A . Similar to the cross-type and U-shaped gates described above, one end of the gate 301 is inserted into a socket formed in a pipe, and firmly joined by welding. As mentioned above, the socket is preferably formed at the end of the pipe and along the axis of the pipe. Bolt holes are formed on the opposite end of the inserting plate 301 for bolting with another pipe. the

Since the C-type plug-in board is a single-board connection, it is often applied to the connection of auxiliary materials and main materials and/or oblique materials for structural reliability and other considerations. However, this is not limiting. And the cross-sectional shape of the plugboard is not necessarily C-shaped, but also can be I-shaped, I-shaped, T-shaped or the like. These are also included in the scope of the present utility model. In this example, the auxiliary material (109 or 107) is shown as a tube. the

Although some specific embodiments of the present utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, rather than limiting the scope of the present utility model. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims. the

Claims (8)

1. angle tower dangles in a double loop, it is characterized in that, comprise ground wire cross-arm, upper conductor cross-arm, middle lead cross-arm, lower wire cross-arm, body of the tower and tower leg, described ground wire cross-arm is connected the two ends of upper conductor cross-arm, described upper conductor cross-arm, middle lead cross-arm and lower wire cross-arm are connected respectively to described body of the tower, described body of the tower is connected to tower leg, makes whole angle tower be fixed on the ground, and the main material of described angle tower is a steel pipe.

2. the double loop according to claim 1 angle tower that dangles is characterized in that described steel pipe connects together by plate.

3. the double loop according to claim 1 angle tower that dangles is characterized in that described upper conductor cross-arm, middle lead cross-arm and lower wire cross-arm are connected to described body of the tower by plate respectively.

4. according to claim 2 or the 3 described double loops angle tower that dangles, it is characterized in that described plate is U type plate, C type plate or X type plate.

5. the double loop according to claim 1 angle tower that dangles is characterized in that, also comprises a plurality of insulator strings at the two ends that are connected to described upper conductor cross-arm, middle lead cross-arm and lower wire cross-arm.

6. the double loop according to claim 5 angle tower that dangles is characterized in that the angle of wind deflection of described insulator string is the 58.66-72.65 degree.

7. the double loop according to claim 5 angle tower that dangles is characterized in that the length of described insulator string is 12.8 meters, and the external overvoltage gap width is 6.7 meters, and the internal overvoltage gap width is 6.0 meters.

8. the double loop according to claim 1 angle tower that dangles is characterized in that described ground wire level interval is 51.1 meters.

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