CN217028323U - Double-loop transposition tower - Google Patents
Double-loop transposition tower Download PDFInfo
- Publication number
- CN217028323U CN217028323U CN202123137291.3U CN202123137291U CN217028323U CN 217028323 U CN217028323 U CN 217028323U CN 202123137291 U CN202123137291 U CN 202123137291U CN 217028323 U CN217028323 U CN 217028323U
- Authority
- CN
- China
- Prior art keywords
- cross arm
- jumper
- tower
- tower body
- wire cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model provides a double-loop transposition tower, which is a tower arrangement structure and a mode capable of performing transposition, small size of a tower head and light weight of the tower, and the tower type comprises: the tower comprises a tower body, a ground wire cross arm jumper support, an upper phase wire cross arm, a middle phase wire cross arm, a lower phase wire cross arm, a tower body upper part front side jumper cross arm, a tower body upper part rear side jumper cross arm, a tower body lower part front side jumper cross arm and a tower body lower part rear side jumper cross arm; the utility model can realize the transposition of the alternating current double-loop transmission line, and compared with the traditional double-loop transposition tower of 500kV line engineering, the transposition tower can reduce the weight of the tower by about 30 tons, reduce 4 strain insulator strings and reduce the size of a tower head so as to reduce the land occupation and save the engineering investment by about 40 ten thousand yuan.
Description
Technical Field
The utility model relates to the technical field of power transmission and transformation engineering, in particular to a double-loop transposition tower for transposition in alternating current transmission line engineering.
Background
In the power grid with the neutral point directly grounded, when the length of a transmission line of the line exceeds 100km or the total length of each loop of outgoing line of certain level of voltage of a transformer substation exceeds 200km, measures such as transposition or transformation of phase sequence arrangement of the transmission lines of the loops are required to balance asymmetric current. The transposition type of the double-circuit transmission line on the same tower is extremely complex, and the commonly adopted double-circuit transposition tower has large tower head size, heavy tower material and large hardware usage amount, which leads to the increase of engineering investment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-loop transposition tower which can be used for transposition, has a small tower head size and light tower weight and saves engineering investment.
In order to achieve the purpose, the utility model provides a double-loop transposition tower, which comprises a tower body and a ground wire cross arm, wherein an upper phase wire cross arm, a middle phase wire cross arm and a lower phase wire cross arm are sequentially arranged below the ground wire cross arm from top to bottom, and the double-loop transposition tower is characterized in that: a tower body upper part front side jumper wire cross arm and a tower body upper part rear side jumper wire cross arm are arranged between the ground wire cross arm and the upper phase conductor cross arm, and a tower body lower part front side jumper wire cross arm and a tower body lower part rear side jumper wire cross arm are arranged below the lower phase conductor cross arm;
a first jumper wire bracket and a second jumper wire bracket are respectively arranged at two ends of the ground wire cross arm; the first jumper support, the second jumper support, the upper phase lead cross arm and the middle phase lead cross arm are respectively provided with a hanging point for hanging a jumper insulator string, and the hanging points are used for realizing transposition among different phase leads;
the upper phase lead cross arm, the middle phase lead cross arm and the lower phase lead cross arm are provided with hanging points for connecting the lead strain insulator string;
and hanging points for hanging the jump-leading strain insulator string are arranged on the front side jumper cross arm on the upper part of the tower body, the rear side jumper cross arm on the upper part of the tower body, the front side jumper cross arm on the lower part of the tower body and the rear side jumper cross arm on the lower part of the tower body, and are used for realizing the connection of the wires.
Furthermore, the first jumper support and the second jumper support are provided with two jumper insulator string hanging points.
Furthermore, two jumper insulator strings connected with the first jumper support and the second jumper support are respectively provided with a connecting point for realizing the winding-jumping connection of the jumper.
Furthermore, hard jumper wires are hung on two jumper wire insulator string hanging points below the upper phase lead cross arm and the middle phase lead cross arm.
The utility model realizes the transposition between wires of different phases and simultaneously meets the requirement of the wires on the clearance of the tower body. Compared with the traditional double-loop transposition tower of 500kV line engineering, the size of the tower head is smaller, the tower weight is lighter, the tower weight can be reduced by about 30 tons, 4 strain insulator strings are reduced, the size of the tower head is reduced, the land occupation is reduced, and the engineering investment is saved by about 40 ten thousand yuan.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, "1" represents a ground wire cross arm;
in the figure, "2" represents a first jumper bracket;
in the figure, "3" represents a tower body;
in the figure, "4" represents an upper phase wire cross arm;
in the figure, "5" represents the middle phase conductor cross arm;
in the figure, "6" represents the lower conductor cross arm;
in the figure, 7 represents a jumper cross arm at the front side of the upper part of the tower body;
in the figure, 8 represents a jumper cross arm at the front side of the lower part of the tower body;
in the figure, "9" represents a jumper insulator string;
in the figure, "10" represents a strain insulator string (lead jump);
in the figure, "11" represents a strain insulator string;
in the figure, "12" represents a hard jumper;
in the figure, "13" represents a jumper cross arm at the rear side of the upper part of the tower body;
in the figure, "14" represents a jumper cross arm at the rear side of the lower part of the tower body;
in the figure, "15" represents a second jumper holder;
in the figure, "A, B, C" represents each phase sequence lead.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and explanation, and is not intended to limit the utility model, as the embodiments are described with reference to the left side of fig. 1 and the right side of fig. 1.
The left side, the right side and the front side and the rear side of the utility model are symmetrical structures, and only the left side implementation mode and the principle of the utility model are explained below, and the right side implementation principle is the same as the left side.
Referring to the attached drawing 1, the concrete embodiment of the utility model comprises a tower body 3, a ground wire cross arm 1, an upper phase wire cross arm 4, a middle phase wire cross arm 5 and a lower phase wire cross arm 6, wherein the top of the tower body 3 is provided with the ground wire cross arm 1, the lower surface of the ground wire cross arm 1 is sequentially provided with the upper phase wire cross arm 4, the middle phase wire cross arm 5 and the lower phase wire cross arm 6 from top to bottom, a tower body upper part front side jumper wire cross arm 7 and a tower body upper part rear side jumper wire cross arm 13 are arranged between the ground wire cross arm 1 and the upper phase wire cross arm 4, and a tower body lower part front side jumper wire cross arm 8 and a tower body lower part rear side jumper wire cross arm 14 are arranged below the lower phase wire cross arm 6. And a first jumper wire bracket 2 and a second jumper wire bracket 15 are respectively arranged at two ends of the ground wire cross arm 1. The first jumper support 2, the second jumper support 15, the upper phase lead cross arm 4 and the middle phase lead cross arm 5 are respectively provided with a hanging point for hanging a jumper insulator string, and the hanging points are used for realizing transposition among different phase leads. The upper phase wire cross arm 4, the middle phase wire cross arm 5 and the lower phase wire cross arm 6 are all provided with hanging points for connecting the wire strain insulator strings. And the front side jumper cross arm 7 on the upper part of the tower body, the rear side jumper cross arm 13 on the upper part of the tower body, the front side jumper cross arm 8 on the lower part of the tower body and the rear side jumper cross arm 14 on the lower part of the tower body are respectively provided with a hanging point for hanging a jump-leading strain insulator string, and the hanging points are used for realizing the connection of wires.
The first jumper support 2 and the second jumper support 15 are respectively provided with two hanging points for hanging the jumper insulator strings, and the two jumper insulator strings which are respectively connected are respectively provided with a connecting point for realizing the winding and jumping connection of the jumper.
Hard jumper wires are hung on two jumper wire insulator string hanging points below the upper phase lead cross arm 4 and the middle phase lead cross arm 5.
The working principle is as follows:
the upper phase conductor C is first connected to the strain insulator string 11 fixed to the upper phase conductor cross arm 4, and then jumps to the hard jumper wire 12 fixed below the upper phase conductor cross arm 4, and is then connected to the strain insulator string 11 on the rear side of the middle phase conductor cross arm 5. And finishing the transition of the upper phase conductor C under the condition of meeting the discharge gap requirements of working conditions such as power frequency voltage, operation overvoltage, lightning overvoltage and the like.
The middle phase conductor B is firstly connected with a strain insulator string 11 fixed on the middle phase conductor cross arm 5, and then jumps to a hard jumper wire 12 fixed below the middle phase conductor cross arm 5, and is then connected with the strain insulator string 11 on the rear side of the lower phase conductor cross arm 6. And the transition of the middle phase conductor B is completed under the condition of meeting the requirements of discharge gaps of working conditions such as power frequency voltage, operation overvoltage, lightning overvoltage and the like.
The lower phase conductor A is firstly connected with a strain insulator string 11 fixed on a lower phase conductor cross arm 6, then jumps around to a strain insulator string (jump leading) 10 fixed above a front side jumper cross arm 8 at the lower part of the tower body, then is connected with a strain insulator string (jump leading) 10 of a front side jumper cross arm 7 at the upper part of the tower body, jumps around to a jumper insulator string 9 fixed below a ground wire cross arm jumper support 2, and finally is connected with a strain insulator string 11 at the rear side of an upper phase conductor cross arm 4. The transition of the lower phase conductor A is completed under the condition of meeting the requirements of discharge gaps of working conditions such as power frequency voltage, operation overvoltage, lightning overvoltage and the like.
Claims (4)
1. The utility model provides a two return circuits transposition tower, includes body of the tower (3), body of the tower (3) top is equipped with ground wire cross arm (1), is equipped with from last to down in proper order below ground wire cross arm (1) and goes up phase conductor cross arm (4), well phase conductor cross arm (5) and lower phase conductor cross arm (6), its characterized in that: a tower body upper part front side jumper wire cross arm (7) and a tower body upper part rear side jumper wire cross arm (13) are arranged between the ground wire cross arm (1) and the upper phase conductor cross arm (4), and a tower body lower part front side jumper wire cross arm (8) and a tower body lower part rear side jumper wire cross arm (14) are arranged below the lower phase conductor cross arm (6);
a first jumper support (2) and a second jumper support (15) are respectively arranged at two ends of the ground wire cross arm (1);
the first jumper support (2), the second jumper support (15), the upper phase lead cross arm (4) and the middle phase lead cross arm (5) are provided with hanging points for hanging jumper insulator strings;
the upper phase lead cross arm (4), the middle phase lead cross arm (5) and the lower phase lead cross arm (6) are provided with hanging points for connecting lead strain insulator strings;
the tower body upper portion front side jumper wire cross arm (7), the tower body upper portion rear side jumper wire cross arm (13), the tower body lower portion front side jumper wire cross arm (8) and the tower body lower portion rear side jumper wire cross arm (14) are all provided with hanging points for hanging the jump-leading strain insulator string, and are used for achieving connection of wires.
2. A double circuit transposition tower according to claim 1, characterized in that: and two jumper insulator string hanging points are respectively arranged on the first jumper support (2) and the second jumper support (15).
3. A dual circuit transposer as claimed in claim 2 wherein: and two jumper insulator strings respectively connected with the first jumper support (2) and the second jumper support (15) are respectively provided with a connecting point.
4. A dual circuit transposer as claimed in claim 1 wherein: hard jumper wires are hung on two jumper wire insulator string hanging points below the upper phase lead cross arm (4) and the middle phase lead cross arm (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123137291.3U CN217028323U (en) | 2021-12-14 | 2021-12-14 | Double-loop transposition tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123137291.3U CN217028323U (en) | 2021-12-14 | 2021-12-14 | Double-loop transposition tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217028323U true CN217028323U (en) | 2022-07-22 |
Family
ID=82440548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123137291.3U Active CN217028323U (en) | 2021-12-14 | 2021-12-14 | Double-loop transposition tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217028323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405149A (en) * | 2022-09-16 | 2022-11-29 | 国网青海省电力公司经济技术研究院 | Double-loop transposition tower for power transmission line |
-
2021
- 2021-12-14 CN CN202123137291.3U patent/CN217028323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405149A (en) * | 2022-09-16 | 2022-11-29 | 国网青海省电力公司经济技术研究院 | Double-loop transposition tower for power transmission line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217028323U (en) | Double-loop transposition tower | |
| CN203654846U (en) | Steel pipe pole used for cable terminal of electric transmission line | |
| CN102005712B (en) | Strain corner tower with horizontal winding and jumping wire jumper for two-loop compact power transmission line | |
| CN1979988B (en) | Common-tower double-return compact type corner transmission iron tower | |
| CN201821070U (en) | Double-circuit compact type angle tower with horizontally-wound and jumped jumper wire of transmission wire | |
| CN206346562U (en) | A kind of string of falling Y tower of common-tower double-return | |
| CN201332249Y (en) | Tangent tower in shape of goblet of same-tower and three-circuit transmission line | |
| CN202094567U (en) | Double-loop transposition hardware string-shaped system of AC EHV single-column combined strain tower | |
| CN110374391A (en) | A kind of " dry " font conversion anchor support of the mono- circuit compact route of 500kV | |
| CN110259252A (en) | A kind of 110 kilovolts are bored across dual-purpose anchor support | |
| CN216553278U (en) | Single-loop transposition tower | |
| CN212478730U (en) | 230kV double-loop self-type transposition tower based on American standard | |
| CN215107822U (en) | Single-loop cable terminal tower | |
| CN108005458A (en) | Singly cut-off π sections towers in double loop | |
| CN204928052U (en) | Rod -type vertical arrangement compact transmission line | |
| CN209924556U (en) | 220kV and 110kV mixed-compression four-loop narrow-base steel pipe strain tower | |
| CN212336874U (en) | Arch cross arm tower type structure of +/-1100 kV direct current line and grounding electrode line on same tower | |
| CN208184360U (en) | A kind of mono- back transmission line π of 220kV connects anchor support | |
| CN206346561U (en) | A kind of single loop is arranged vertically anchor support | |
| CN217652463U (en) | Single-loop iron tower with self-crossed commutation | |
| CN219081179U (en) | Phase-adjustable ultrahigh-voltage single-loop terminal tower | |
| CN201574611U (en) | Flat ground-type ultrahigh-voltage double-circuit power-output iron tower | |
| CN105201264B (en) | A kind of double loop door font arrangement steel tower | |
| CN110374390A (en) | A kind of 500 kilovolts of " non-" font conversion anchor supports for being arranged vertically double-loop compact | |
| CN215671411U (en) | Single-column strain transposition tower for double-circuit line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |