CN216355901U - Double-loop T-shaped connecting and guiding lower tower - Google Patents
Double-loop T-shaped connecting and guiding lower tower Download PDFInfo
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- CN216355901U CN216355901U CN202122691160.3U CN202122691160U CN216355901U CN 216355901 U CN216355901 U CN 216355901U CN 202122691160 U CN202122691160 U CN 202122691160U CN 216355901 U CN216355901 U CN 216355901U
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Abstract
The utility model discloses a double-loop T-connection down tower, which comprises a tower body, an upper wire cross arm, a middle wire cross arm, a lower wire cross arm and a lightning arrester platform, wherein the upper wire cross arm, the middle wire cross arm and the lower wire cross arm are arranged on the tower body; two strain insulator strings and a suspension insulator string are arranged at the end parts of the upper, middle and lower lead cross arms; one, two and three cross arm insulators are respectively arranged at the end parts of the cross arms of the middle and lower wires and the end part of the lightning arrester platform in a side-protruding manner; the three-phase cables of the power transmission line are respectively connected to the upper, middle and lower wire cross arms, each phase of cable is respectively pulled between the end parts of the two strain insulator strings and the end part of the suspension insulator string, the power transmission cable at the end part of one strain insulator string is connected with a down-leading jumper, and the jumper is sequentially connected with the end parts of the cross arm type insulators of each layer so as to be pulled towards the bottom of the tower body layer by layer. The T-connection down lead wiring of the three-phase cable is reasonable, and the cable is beneficial to burying and accessing a user side; the whole double-loop T-shaped lead-down tower is simple and reasonable in structure, the steel consumption during construction is small, and the lead-down cable is stably installed.
Description
Technical Field
The utility model relates to a power transmission tower, in particular to a double-loop T-connection down tower.
Background
When the cable is connected to a dense residential area by the existing double-loop tangent tower of the high-voltage transmission line, the cable T is usually led down by the transmission tower and then buried. In the prior art, for example, patent document CN202954611U discloses a power transmission line tangent tower connected by a double-loop cable T, which includes a tower body, an upper wire cross arm, a middle wire cross arm, a lower wire cross arm, a T-connection upper cross arm, a T-connection middle cross arm, a T-connection lower cross arm, and a T-connection bottom cross arm, wherein a lightning arrester and a supporting insulator are arranged between two adjacent T-connection cross arms, the upper end of the lightning arrester is connected with the upper T-connection cross arm, the lower end of the lightning arrester is connected with the upper end of the supporting insulator, the lower end of the supporting insulator is connected with the lower T-connection cross arm, and a cable terminal is connected to the junction of the lightning arrester and the supporting insulator. The straight line tower needs to be provided with upper, middle and lower wire cross arms on a tower body, T-joint upper, middle and lower cross arms, T-joint bottom cross arms and lightning protection devices among all the T-joint cross arms, the whole structure is complex, and the steel consumption is large during construction; and the tangent tower does not disclose how the cable T is connected to the spliced cable after being led down.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a double-loop T-connection lower tower which is simple in structure and reasonable in layout.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a double-loop T-shaped connecting and leading tower comprises a tower body which is vertically arranged, and an upper wire cross arm, a middle wire cross arm, a lower wire cross arm and an arrester platform which are arranged on the tower body from top to bottom layer by layer, wherein an arrester is arranged on the arrester platform; the end parts of the upper lead cross arm, the middle lead cross arm and the lower lead cross arm are respectively provided with two strain insulator strings and a suspension insulator string, and the suspension insulator strings and the two strain insulator strings are distributed in a T shape; one, two and three cross arm type insulators are respectively laterally protruded at the end part of the middle wire cross arm, the end part of the lower wire cross arm and the end part of the lightning arrester platform, any two cross arm type insulator end parts at the same position are not positioned on the same vertical line, the cross arm type insulator on the middle wire cross arm and one of the cross arm type insulators on the lower wire cross arm are arranged in an up-and-down corresponding mode, and the two cross arm type insulators on the lower wire cross arm and two of the cross arm type insulators on the lightning arrester platform are arranged in an up-and-down corresponding mode; the three-phase cables of the power transmission line are respectively connected to the upper lead cross arm, the middle lead cross arm and the lower lead cross arm, each phase of cable is respectively pulled between the end parts of the two strain insulator strings and the end part of the suspension insulator string, the power transmission cable at the end part of one strain insulator string is connected with a down-leading jumper, and the jumper is sequentially connected with the end parts of the cross arm type insulators of each layer so as to be pulled towards the bottom of the tower body layer by layer.
As a further improvement of the above technical solution:
the tower body bottom still is equipped with termination, and it is including the wiring cable that is used for transmitting electricity to the user, inserts in ground and overlaps the cable protective sheath outside wiring cable lower part, and the side is stretched out the cable support that is used for fixed wiring cable and/or cable protective sheath in the tower body bottom, connects the cable termination between wiring cable upper end and wire jumper lower extreme, and the side is stretched out the cable termination platform that is used for bearing the cable termination in the tower body lower part.
Furthermore, the cable support is connected with the wiring cable or the cable protective sleeve through the hoop.
And the cable terminal platform is also provided with a grounding box.
The tower body between the lower wire cross arm and the lightning arrester platform is also provided with a plurality of layers of down lead cross arms, three cross arm type insulators used for drawing jumper wires are arranged on the side of the end part of each down lead cross arm in a protruding mode, and the three cross arm type insulators on the lightning arrester platform are arranged in a vertically corresponding mode.
Furthermore, a connecting support is arranged at the connecting position where two or three cross arm type insulators are connected, the connecting support comprises a first connecting rod extending out of the connecting position and a second connecting rod vertically and fixedly connected with the first connecting rod, and the cross arm type insulators are uniformly distributed on the second connecting rod.
And a lightning counter is also arranged on the lightning arrester platform.
The top of the tower body is also provided with a ground wire cross arm.
The upper wire cross arm, the middle wire cross arm and the lower wire cross arm are symmetrically distributed on the tower body on two sides so as to be suitable for double-loop power transmission of a high-voltage power transmission line.
The utility model has the beneficial effects that:
according to the utility model, the upper wire cross arm, the middle wire cross arm, the lower wire cross arm and the lightning arrester platform are arranged on the tower body, and one, two and three cross arm insulators for the lead wires are sequentially arranged on the middle wire cross arm, the lower wire cross arm and the lightning arrester platform, so that the T-connection lower lead wiring of the three-phase cable of the power transmission line is reasonable, and the cable is beneficial to burying and accessing a user terminal. The whole double-loop T-shaped lead-down tower is simple and reasonable in structure, the steel consumption during construction is small, and the lead-down cable is stably installed.
Drawings
Fig. 1 is a perspective view of embodiment 1.
FIG. 2 is a front view of embodiment 1.
Fig. 3 and 4 are each a schematic structural view of the connecting bracket of embodiment 1.
FIG. 5 is a front view of embodiment 2.
FIG. 6 is a schematic side-view wiring diagram of example 2.
The reference numbers in the figures are: 1. a tower body; 2. a ground wire cross arm; 3. an upper wire cross arm; 4. a middle wire cross arm; 5. a lower wire cross arm; 6. a lightning arrester platform; 61. a lightning arrester; 62. a lightning counter; 7. strain insulator string; 8. a suspension insulator string; 9. a cross arm insulator; 10. a jumper wire; 11. a wiring device; 111. a connection cable; 112. a cable protective sheath; 113. a cable holder; 114. a cable termination; 115. a cable termination platform; 116. hooping; 117. a ground tank; 12. a downlead cross arm; 13. connecting a bracket; 131. a first connecting rod; 132. a second connecting rod.
Detailed Description
The present invention will now be described with reference to the accompanying drawings, wherein the specific embodiments described herein are merely illustrative and explanatory of the utility model and are not restrictive thereof.
Example 1
As shown in fig. 1 and fig. 2, the double-loop T-connection lower tower of the present embodiment is a steel pipe tower. This shaft tower is including erectting the body of tower 1 that sets up to and by upper and lower successive layer locate last wire cross arm 3, well wire cross arm 4, lower wire cross arm 5 and arrester platform 6 on the body of tower 1, be equipped with arrester 61 on the arrester platform 6. Go up wire cross arm 3, well wire cross arm 4 and 5 tip of lower wire cross arm and all be equipped with two strain insulator string 7 and one insulator string 8 that dangles, insulator string 8 and two strain insulator string 7 are "T" style of calligraphy and distribute. One, two and three cross arm type insulators 9 are respectively laterally protruded at the end part of the middle lead cross arm 4, the end part of the lower lead cross arm 5 and the end part of the lightning arrester platform 6, any two cross arm type insulators 9 at the same position are not positioned on the same vertical line, the cross arm type insulator 9 on the middle lead cross arm 4 and one of the cross arm type insulators 9 on the lower lead cross arm 5 are arranged in an up-and-down corresponding mode, and the two cross arm type insulators 9 on the lower lead cross arm 5 and two of the cross arm type insulators 9 on the lightning arrester platform 6 are arranged in an up-and-down corresponding mode; three-phase cables (namely, a phase, b phase and c phase of a loop 1 and a loop 2 in the figure) of a power transmission line are respectively connected to an upper lead cross arm 3, a middle lead cross arm 4 and a lower lead cross arm 5, the cables of each phase are respectively pulled between the end parts of two strain insulator strings 7 and the end part of a suspension insulator string 8, a power transmission cable at the end part of one strain insulator string 7 is connected with a down-leading jumper wire 10, and the jumper wires 10 are sequentially connected with the end parts of cross arm type insulators 9 of all layers so as to be pulled towards the bottom of a tower body 1 layer by layer.
Wherein, the lightning arrester platform 6 is also provided with a lightning counter 62. The top of the tower body 1 is also provided with a ground wire cross arm 2. The upper wire cross arm 3, the middle wire cross arm 4 and the lower wire cross arm 5 are symmetrically distributed on the tower body 1 on two sides.
In addition, the bottom of the tower body 1 is further provided with a wiring device 11, which includes a wiring cable 111 for transmitting power to a user end, a cable protective sleeve 112 inserted on the ground and sleeved outside the lower portion of the wiring cable 111, a cable bracket 113 protruding from the bottom of the tower body 1 for fixing the wiring cable 111 and/or the cable protective sleeve 112, a cable terminal 114 connected between the upper end of the wiring cable 111 and the lower end of the jumper 10, and a cable terminal platform 115 protruding from the lower portion of the tower body 1 for bearing the cable terminal 114. The cable support 113 is connected with the connection cable 111 or the cable protective sleeve 112 through the hoop 116. A grounding box 117 is also provided on the cable termination platform 115.
In addition, three layers of down-lead cross arms 12 are further arranged on the tower body 1 between the down-lead cross arms 5 and the lightning arrester platform 6, three cross arm type insulators 9 used for drawing jumper wires 10 are protruded on the side of the end parts of the down-lead cross arms 12, and the three cross arm type insulators 9 on the lightning arrester platform 6 are arranged in an up-and-down corresponding mode.
As shown in fig. 3 and 4, a connecting bracket 13 is disposed at a joint where two or three cross arm insulators 9 are connected, the connecting bracket 13 includes a first connecting rod 131 extending from the joint and a second connecting rod 132 vertically and fixedly connected to the first connecting rod 131, and the cross arm insulators 9 are uniformly distributed on the second connecting rod 132.
Example 2
As shown in fig. 5 and 6, the dual-loop T-junction lower angle steel tower of the present embodiment is different from that of embodiment 1 in that: because the tower height is low and the tower is mainly built by angle steel, the downlead cross arm 12 is not arranged; moreover, the drawing of a few parts such as the cable support 113 and the hoop 116 is omitted. It should be understood that equivalent changes based on the above two embodiments are intended to be within the scope of this patent.
Claims (9)
1. The utility model provides a tower under two return circuits T connects and draws which characterized in that: the lightning arrester comprises a tower body (1) which is vertically arranged, and an upper wire cross arm (3), a middle wire cross arm (4), a lower wire cross arm (5) and a lightning arrester platform (6) which are arranged on the tower body (1) from top to bottom layer by layer, wherein a lightning arrester (61) is arranged on the lightning arrester platform (6); the end parts of the upper lead cross arm (3), the middle lead cross arm (4) and the lower lead cross arm (5) are respectively provided with two strain insulator strings (7) and a suspension insulator string (8), and the suspension insulator string (8) and the two strain insulator strings (7) are distributed in a T shape; one, two and three cross arm type insulators (9) are respectively laterally protruded at the end part of the middle wire cross arm (4), the end part of the lower wire cross arm (5) and the end part of the lightning arrester platform (6), any two cross arm type insulators (9) at the same position are not positioned on the same vertical line, the cross arm type insulator (9) on the middle wire cross arm (4) and one cross arm type insulator (9) on the lower wire cross arm (5) are arranged in an up-and-down corresponding mode, and the two cross arm type insulators (9) on the lower wire cross arm (5) and the two cross arm type insulators (9) on the lightning arrester platform (6) are arranged in an up-and-down corresponding mode; three-phase cables of the power transmission line are respectively connected to the upper wire cross arm (3), the middle wire cross arm (4) and the lower wire cross arm (5), each phase of cable is respectively pulled between the end parts of the two strain insulator strings (7) and the end part of the suspension insulator string (8), a power transmission cable at the end part of one strain insulator string (7) is connected with a down-leading jumper (10), and the jumper (10) is sequentially connected with the end parts of the cross arm type insulators (9) of each layer so as to be pulled towards the bottom of the tower body (1) layer by layer.
2. The dual loop T-lead lower column of claim 1, wherein: the tower body (1) bottom still is equipped with termination (11), it includes wiring cable (111) that is used for transmitting electricity to the user, insert in ground and cover cable protective sheath (112) outside wiring cable (111) lower part, the cable support (113) that is used for fixed wiring cable (111) and/or cable protective sheath (112) of side protrusion in tower body (1) bottom, connect cable termination (114) between wiring cable (111) upper end and wire jumper (10) lower extreme, side protrusion in tower body (1) lower part is used for bearing cable termination (114) cable termination platform (115).
3. The dual loop T-lead lower column of claim 2, wherein: the cable support (113) is connected with the wiring cable (111) or the cable protective sleeve (112) through the hoop (116).
4. The dual loop T-lead lower column of claim 2, wherein: and a grounding box (117) is also arranged on the cable terminal platform (115).
5. The dual loop T-lead lower column of claim 1, wherein: still be equipped with a plurality of layers of downlead cross arm (12) on body of tower (1) between lower wire cross arm (5) and arrester platform (6), downlead cross arm (12) tip side is protruding to have three cross arm formula insulator (9) that are used for drawing jumper wire (10), and these three cross arm formula insulator (9) correspond the setting from top to bottom with three cross arm formula insulator (9) on arrester platform (6).
6. The dual loop T-lead lower column of claim 1 or 5, wherein: the connecting part connected with two or three cross arm type insulators (9) is provided with a connecting support (13), the connecting support (13) comprises a first connecting rod (131) extending out of the connecting part and a second connecting rod (132) vertically and fixedly connected with the first connecting rod (131), and the cross arm type insulators (9) are uniformly distributed on the second connecting rod (132).
7. The dual loop T-lead lower column of claim 1, wherein: and a lightning counter (62) is also arranged on the lightning arrester platform (6).
8. The dual loop T-lead lower column of claim 1, wherein: the top of the tower body (1) is also provided with a ground wire cross arm (2).
9. The dual loop T-lead lower column of claim 1, wherein: the upper wire cross arm (3), the middle wire cross arm (4) and the lower wire cross arm (5) are symmetrically distributed on the tower body (1) at two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122691160.3U CN216355901U (en) | 2021-11-04 | 2021-11-04 | Double-loop T-shaped connecting and guiding lower tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122691160.3U CN216355901U (en) | 2021-11-04 | 2021-11-04 | Double-loop T-shaped connecting and guiding lower tower |
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| Publication Number | Publication Date |
|---|---|
| CN216355901U true CN216355901U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122691160.3U Active CN216355901U (en) | 2021-11-04 | 2021-11-04 | Double-loop T-shaped connecting and guiding lower tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116971657A (en) * | 2023-09-22 | 2023-10-31 | 国网山东省电力公司莱芜供电公司 | Cable T connects single straight line tower that returns down |
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2021
- 2021-11-04 CN CN202122691160.3U patent/CN216355901U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116971657A (en) * | 2023-09-22 | 2023-10-31 | 国网山东省电力公司莱芜供电公司 | Cable T connects single straight line tower that returns down |
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