CN209924551U - Double-loop cable terminal tower - Google Patents
Double-loop cable terminal tower Download PDFInfo
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- CN209924551U CN209924551U CN201920344499.6U CN201920344499U CN209924551U CN 209924551 U CN209924551 U CN 209924551U CN 201920344499 U CN201920344499 U CN 201920344499U CN 209924551 U CN209924551 U CN 209924551U
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Abstract
The utility model discloses a two return circuit cable termination shaft towers belongs to transmission tower technical field. Double loop cable termination shaft tower includes: the tower comprises a tower body (1) and a supporting platform (2) arranged at the lower part of the tower body (1), wherein the supporting platform (2) comprises two groups of fixed cross arms (21), and the two groups of fixed cross arms (21) are symmetrically arranged on the same horizontal plane; each group of fixed cross arms (21) comprises three fixed cross arms (21), the included angles between every two adjacent fixed cross arms (21) are the same, and the value range of the included angles is 30-45 degrees; each fixed cross arm (21) is provided with a lightning arrester (3) and a cable terminal (4). This two return circuit cable terminal shaft towers is simple structure not only, and the material quantity of supporting platform (2) is few, has reduced engineering cost, has alleviateed the dead weight of supporting platform (2), has optimized the atress of tower body (1), because supporting platform (2) only has the one deck moreover, therefore the maintainer of being convenient for carries out the operation maintenance.
Description
Technical Field
The utility model relates to a transmission tower technical field, in particular to two return circuit cable terminal shaft towers.
Background
The cable terminal tower is used for the junction of the high-voltage overhead transmission line and the high-voltage cable. The double-loop cable terminal tower is the cable terminal tower supporting the double loops as the name implies.
Among the prior art, two return circuit cable terminal shaft towers include the tower body and set up a plurality of supporting platform in the tower body lower part, and supporting platform's number generally is 2 ~ 3, and a plurality of supporting platform install in proper order on the not co-altitude of tower body.
At present, a plurality of supporting platforms are needed for a double-loop cable terminal tower in the prior art, so that the construction cost is increased, and difficulties are brought to the daily operation and maintenance of maintenance personnel due to the fact that the supporting platforms are located at different heights.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a structure is two return circuit cable terminal shaft towers more simplified to reduce engineering cost, be convenient for operation maintenance.
Specifically, the method comprises the following technical scheme:
a dual-loop cable termination tower, comprising: a tower body and a supporting platform arranged at the lower part of the tower body, wherein,
the supporting platform comprises two groups of fixed cross arms which are symmetrically arranged on the same horizontal plane; each group of fixed cross arms comprises three fixed cross arms, the included angle between every two adjacent fixed cross arms is the same, and the value range of the included angle is 30-45 degrees;
and each fixed cross arm is provided with a lightning arrester and a cable terminal.
In one possible design, the lightning arrester and the cable termination on each of the fixing cross arms are arranged side by side on the upper part of the fixing cross arm.
In one possible design, the tower body is a steel pipe body and is fixed on the ground.
In one possible design, the double-loop cable terminal tower further comprises a ground wire cross arm and a three-phase wire cross arm;
the ground wire cross arm and the three-phase wire cross arm are sequentially arranged on the upper part of the tower body from top to bottom.
In one possible embodiment, each of the three-phase conductor crossarms comprises two arms, each of which is provided with a jumper insulator string and a strain insulator string.
In one possible design, the jumper insulator string on each arm is arranged at a lower part of the arm at the end remote from the tower body.
In one possible design, the extension direction of the strain insulator string on each arm is perpendicular to the extension direction of the arm.
In one possible design, each of the conductor cross-arms is located at a different vertical height.
In one possible design, projections of all jumper insulator strings on the three-phase lead cross arm on the same horizontal plane are not coincident;
the projections of all the strain insulator strings on the three-phase lead cross arm on the same horizontal plane are not coincident.
In one possible design, the projections of all jumper insulator strings on the three-phase lead cross arm on the same vertical plane are not coincident;
and the projections of all the strain insulator strings on the three-phase lead cross arm on the same vertical plane are not coincident.
The embodiment of the utility model provides a technical scheme's beneficial effect includes at least:
the utility model discloses two return circuit cable terminal shaft towers, lower part through at the tower body sets up a supporting platform, wherein, supporting platform includes two sets of fixed cross arms, two sets of fixed cross arm symmetries set up on same horizontal plane, every group fixed cross arm includes three fixed cross arm again, keep 30 ~ 45 contained angle between two adjacent fixed cross arms, set up an arrester and a cable terminal on every fixed cross arm, make the cable terminal of two return circuit cable terminal shaft towers and the public supporting platform of arrester, a plurality of supporting platform among the prior art has been replaced. The double-loop cable terminal tower is simple in structure, the material consumption of the supporting platform is small, the construction cost is reduced, the dead weight of the supporting platform is reduced, the stress of the tower body is optimized, and due to the fact that the supporting platform is only provided with one layer, maintenance personnel can conveniently operate and maintain the tower.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a dual-circuit cable terminal tower according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a dual-circuit cable terminal tower according to an embodiment of the present invention.
The reference numerals in the drawings denote:
1-a tower body, wherein,
2-supporting platform, 21-fixed cross arm,
3-a lightning arrester, which is arranged on the ground,
4-a cable termination head, which is provided with a cable,
5-the ground wire cross arm is arranged on the ground wire,
6-wire cross arm, 61-arm,
7-a jumper insulator string which is connected with the jumper insulator string,
8-a strain insulator string, wherein the strain insulator string,
9-a main drainage wire, wherein,
10-auxiliary drainage wires,
11-cable.
Detailed Description
Before further describing the embodiments of the present invention in detail, the orientation terms, such as "upper portion", "lower portion", etc., related in the embodiments of the present invention all use the orientation shown in fig. 1 or fig. 2 as the reference, and are only used to clearly describe the dual-circuit cable terminal tower of the embodiments of the present invention, and do not have the meaning of limiting the protection scope of the present invention.
Unless defined otherwise, all technical terms used in the embodiments of the present invention have the same meaning as commonly understood by one of ordinary skill in the art. Before further detailed description of embodiments of the present invention, some terms appearing in the embodiments of the present invention are explained.
In the embodiment of the utility model provides an in, related "arrester" is an electrical apparatus that is used for protecting electrical equipment to avoid high transient overvoltage harm and restriction afterflow time, also normally restricts afterflow amplitude.
The term "cable termination" is used to refer to a device used to complete the connection of a cable to other electrical equipment.
The 'jumper insulator string' is used for suspending the lead and insulating the lead from the tower body and the ground.
The strain insulator string can effectively isolate the electrified lead from the ground and keep the electric wires at the self positions.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe the embodiments of the present invention in further detail with reference to the accompanying drawings.
The embodiment of the utility model provides a two return circuit cable terminal shaft towers, its schematic structure is shown in FIG. 1, and this two return circuit cable terminal shaft tower includes: a tower body 1 and a supporting platform 2 arranged at the lower part of the tower body 1.
The supporting platform 2 comprises two groups of fixed cross arms 21, and the two groups of fixed cross arms 21 are symmetrically arranged on the same horizontal plane; each group of fixed cross arms 21 comprises three fixed cross arms 21, the included angle between two adjacent fixed cross arms 21 is the same, and the value range of the included angle is 30-45 degrees, that is, each group of fixed cross arms 21 can form a sector, and the area of the sector formed by two groups of fixed cross arms 21 is the same.
Each fixed cross arm 21 is provided with one lightning arrester 3 and one cable terminal 4, that is, one supporting platform 2 is provided with six lightning arresters 3 and six cable terminals 4 in different directions of the same horizontal plane, as shown in fig. 1, so that a plurality of lightning arresters 3 and cable terminals 4 are commonly used on the same supporting platform 2, instead of a plurality of supporting platforms in the prior art.
Therefore, the utility model discloses two return circuit cable terminal shaft towers, simple structure not only, supporting platform 2's material quantity is few, has reduced engineering cost, has alleviateed supporting platform 2's dead weight, has optimized tower body 1's atress, because supporting platform 2 only has the one deck moreover, therefore the maintainer of being convenient for carries out the operation maintenance.
The structure of the double-circuit cable terminal tower of the embodiment of the present invention is further described below:
in a possible implementation manner, the included angles between two adjacent fixed cross arms 21 are the same, and are both 30 degrees, so that the distance between two adjacent fixed cross arms 21 is small, and a maintenance platform is convenient for maintenance personnel to build during operation and maintenance.
In one possible implementation, as shown in fig. 2, 21 arresters 3 and cable terminations 4 are arranged side by side on the upper part of each fixing cross arm 21, so that the arresters 3 and the cable terminations 4 are connected by auxiliary conductors 10, and so that the main conductors 9 leading from the upper part are connected to the cable terminations 4.
For the position relationship between the lightning arrester 3 and the cable terminal 4 on each fixed cross arm 21, the lightning arrester 3 may be close to the tower body 1 relative to the cable terminal 4, or may be far from the tower body 1 relative to the cable terminal 4, which is not specifically limited herein, subject to the actual design requirement.
In a possible implementation mode, the tower body 1 is a steel pipe body and is fixed on the ground, and the occupied area is small.
Based on above structure, the utility model discloses two return circuit cable termination shaft towers still include ground wire cross arm 5 and three-phase wire cross arm 6.
The ground wire cross arm 5 and the three-phase lead cross arm 6 are sequentially arranged on the upper part of the tower body 1 from top to bottom so as to support the high-voltage overhead transmission line and the main drainage wire 9.
In one possible implementation, the jumper insulator string 7 on each arm 61 is disposed at a lower portion of the end of the arm 61 remote from the tower 1, as shown in fig. 2, so that the main drain wires 9 are led vertically down from the jumper insulator string 7 to be connected to the cable termination 4.
In one possible implementation, the extension direction of the strain insulator string 8 on each arm 61 is perpendicular to the extension direction of the arm 61, as shown in fig. 2.
The angle between the jumper insulator string 7 and the strain insulator string 8 on each arm 61 may be 80 to 90 degrees, and is not particularly limited herein.
It can be understood that, after passing through the strain insulator string 8 on each arm 61, the main drainage wire 9 is directly and vertically led down through the corresponding jumper insulator string 7 on the arm 61 thereof to be connected to the cable terminal 4 which is closest to the lower part thereof, and is led into the ground through the cable 11 through the cable terminal 4, so that the utility model discloses a two-circuit cable terminal tower lead down mode is simple, engineering cost is little, and operation and maintenance are convenient; at the same time, the auxiliary drain wire 10 is drawn from the main drain wire 9 and connected to the arrester 3.
Further, as shown in fig. 2, each of the three-phase wire cross arms 6 includes two arms 61, and one jumper insulator string 7 and one strain insulator string 8 are provided on each arm 61, so that each jumper insulator string 7 and each strain insulator string 8 are separately arranged.
As will be appreciated by those skilled in the art, three wire crossarms 6 are included in the three-phase wire crossarms 6, and as shown in fig. 2, each wire crossarm 6 is located at a different vertical height for ease of routing.
Further, the projections of all jumper insulator strings 7 on the three-phase lead cross arm 6 on the same horizontal plane are not coincident; the projections of all the strain insulator strings 8 on the three-phase lead cross arm 6 on the same horizontal plane are not coincident.
So set up for stagger each other from top to bottom all jumper insulator string 7 and all strain insulator string 8 on three-phase wire cross arm 6, guarantee from the main drainage wire 9 that every jumper insulator string 7 draws downwards not to produce alternately each other.
Similarly, the projections of all jumper insulator strings 7 on the three-phase lead cross arm 6 on the same vertical plane are not coincident; the projections of all the strain insulator strings 8 on the three-phase lead cross arm 6 on the same vertical plane are not coincident.
By the arrangement, all jumper insulator strings 7 and all strain insulator strings 8 on the three-phase cross arm 6 are staggered, and the main drainage wires 9 led downwards from each jumper insulator string 7 are guaranteed not to be crossed.
In a possible example, the maintainer can carry the auxiliary instrument that supplies to maintainer placement tool or stand, for example the attachment strap etc. to the utility model discloses two return circuit cable terminal shaft tower places department sets up the auxiliary instrument on adjacent two or more fixed cross arms 21, realizes operation platform's the back of building, carries out the operation maintenance operation that corresponds.
The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dual-loop cable termination tower, comprising: a tower body (1) and a supporting platform (2) arranged at the lower part of the tower body (1), wherein,
the supporting platform (2) comprises two groups of fixed cross arms (21), and the two groups of fixed cross arms (21) are symmetrically arranged on the same horizontal plane; each group of fixed cross arms (21) comprises three fixed cross arms (21), the included angles between every two adjacent fixed cross arms (21) are the same, and the value range of the included angles is 30-45 degrees;
each fixed cross arm (21) is provided with a lightning arrester (3) and a cable terminal (4).
2. Double loop cable termination tower according to claim 1, characterised in that the lightning conductor (3) and the cable termination head (4) on each fixed cross arm (21) are arranged side by side on the upper part of the fixed cross arm (21).
3. Double loop cable termination tower according to claim 1, characterised in that the tower body (1) is a steel tube body and is fixed to the ground.
4. The dual-loop cable termination tower of claim 1, further comprising a ground wire cross-arm (5) and a three-phase wire cross-arm (6);
the ground wire cross arm (5) and the three-phase wire cross arm (6) are sequentially arranged on the upper part of the tower body (1) from top to bottom.
5. The dual-loop cable termination tower as recited in claim 4, characterized in that each of the three-phase wire crossarms (6) comprises two arms (61), one jumper insulator string (7) and one strain insulator string (8) being arranged on each arm (61).
6. Double loop cable termination tower as claimed in claim 5, characterized in that a jumper insulator string (7) on each arm (61) is arranged at the lower part of the arm (61) at the end remote from the tower (1).
7. Double loop cable termination tower according to claim 5, characterised in that the extension direction of the strain insulator string (8) on each arm (61) is perpendicular to the extension direction of the arm (61).
8. Double loop cable termination tower as claimed in claim 5, characterized in that each wire cross-arm (6) is located at a different vertical height.
9. The dual-loop cable termination tower as recited in claim 8, wherein projections of all jumper insulator strings (7) on the three-phase conductor cross-arm (6) on the same horizontal plane do not coincide;
the projections of all the strain insulator strings (8) on the three-phase lead cross arm (6) on the same horizontal plane are not coincident.
10. The dual-loop cable termination tower as claimed in claim 9, wherein the projections of all jumper insulator strings (7) on the three-phase wire cross-arm (6) on the same vertical plane do not coincide;
the projections of all the strain insulator strings (8) on the three-phase lead cross arm (6) on the same vertical plane are not coincident.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920344499.6U CN209924551U (en) | 2019-03-18 | 2019-03-18 | Double-loop cable terminal tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920344499.6U CN209924551U (en) | 2019-03-18 | 2019-03-18 | Double-loop cable terminal tower |
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| CN209924551U true CN209924551U (en) | 2020-01-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896839A (en) * | 2020-07-14 | 2020-11-06 | 国核电力规划设计研究院有限公司 | Platform and method for testing current-carrying capacity of submarine cable in temperature field |
| CN112049502A (en) * | 2020-09-10 | 2020-12-08 | 国网福建省电力有限公司经济技术研究院 | Double-loop steel pipe pole tower overhead line direct-pulling down structure |
| CN114086815A (en) * | 2021-11-12 | 2022-02-25 | 国网安徽省电力有限公司经济技术研究院 | Double-loop power transmission line cable terminal pole |
| CN114086812A (en) * | 2021-11-12 | 2022-02-25 | 国网安徽省电力有限公司经济技术研究院 | Double-loop cable terminal tower with switching bearing platform support structure |
-
2019
- 2019-03-18 CN CN201920344499.6U patent/CN209924551U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896839A (en) * | 2020-07-14 | 2020-11-06 | 国核电力规划设计研究院有限公司 | Platform and method for testing current-carrying capacity of submarine cable in temperature field |
| CN112049502A (en) * | 2020-09-10 | 2020-12-08 | 国网福建省电力有限公司经济技术研究院 | Double-loop steel pipe pole tower overhead line direct-pulling down structure |
| CN114086815A (en) * | 2021-11-12 | 2022-02-25 | 国网安徽省电力有限公司经济技术研究院 | Double-loop power transmission line cable terminal pole |
| CN114086812A (en) * | 2021-11-12 | 2022-02-25 | 国网安徽省电力有限公司经济技术研究院 | Double-loop cable terminal tower with switching bearing platform support structure |
| CN114086812B (en) * | 2021-11-12 | 2023-08-18 | 国网安徽省电力有限公司经济技术研究院 | Double-loop cable terminal tower with switching bearing platform support structure |
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