CN212453879U

CN212453879U - Double-loop T-joint steel pipe rod

Info

Publication number: CN212453879U
Application number: CN202021652875.7U
Authority: CN
Inventors: 李玉梅; 杨靓
Original assignee: Hefei Electric Power Planning And Design Institute
Current assignee: Hefei Electric Power Planning And Design Institute
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-02-02
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses a two return circuits T connects steel-pipe pole belongs to transmission of electricity technical field. The steel pipe pole includes: a main rod vertically arranged; the T-shaped cross arms are arranged on the main rod and distributed in a multi-layer bilateral mode; and the main line cross arms are arranged on the main rod, are arranged on the same layer with the T-shaped cross arms, and are distributed in a T shape with the T-shaped cross arms on the same layer. The utility model discloses be applied to the wiring of single disconnected circuit, its main line wire hangs the point and the T wiring circuit wire hangs the point on a plane, has reduced the shaft tower full height, saves steel, reduces engineering cost.

Description

Double-loop T-joint steel pipe rod

Technical Field

The utility model belongs to the technical field of the transmission of electricity, concretely relates to two return circuits T connects steel pipe pole.

Background

For newly-built power inlet wires of 110kV substations, single-break or double-break of nearby 110kV lines is mostly adopted for realization. The conventional design adopts a double-loop double-T tower, and the structure and the wiring of the double-loop double-T tower can refer to a double-loop double-T connection steel pipe pole disclosed in a patent document CN 105734731B. The tower head of the double-loop double-T tower is complex in arrangement, the number of layers of the cross arms of the guide wire and the ground wire is large, and the size of the tower head is large. Therefore, it is necessary to develop a new pole type for simplifying the connection manner between the main line and the T-junction line.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a two return circuits T connects steel pipe pole for simplify the mode of connection by the main line of cut-off and T wiring way, make it both satisfy tower head electrical requirements, reduce the full height of shaft tower again and consume the steel volume.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a double-loop T-joint steel pipe pole comprises:

a main rod vertically arranged;

the T-shaped cross arms are arranged on the main rod and distributed in a multi-layer bilateral mode;

and the main line cross arms are arranged on the main rod, are arranged on the same layer with the T-shaped cross arms, and are distributed in a T shape with the T-shaped cross arms on the same layer.

As a further improvement of the above technical solution:

the tail end of the main line cross arm is a hanging point connected with a main line lead; the tail end of the T-connection cross arm is a hanging point connected with a wire of the T-connection circuit in an access mode, and the two hanging points are connected in series through a jumper wire.

Jumper wire insulator seats are arranged at the tail end of the main wire cross arm and the tail end of the T-connection cross arm; the jumper wire insulator seat comprises two wing hanging plates, two side hanging plates and two lower hanging plates, wherein the two wing hanging plates, the two side hanging plates and the two lower hanging plates are all provided with through holes; the two wing hanging plates are respectively unfolded at two sides of the top of the tail end of the cross arm; the two side hanging plates are parallel and laterally protruded at the tail ends of the cross arms; the two lower hanging plates are parallel to the bottom of the tail end of the cross arm.

The outside of the main rod is provided with a ladder stand from bottom to top so as to be convenient for installation and maintenance. The ladder stand comprises a connecting rod which is vertically arranged and fixed on the side wall of the main rod, and foot rests which are staggered and transversely fixed on two sides of the connecting rod; the mobile jib is equipped with the side boss, and the connecting rod is close to the side boss with single or two side by side's mode, passes through connection piece fixed connection between connecting rod and the side boss.

The main rods are arranged in a segmented mode, and the main rods of all the segments are connected in an inserted mode.

The main rod is preferably a 12-sided steel pipe.

The bottom end of the main rod is fixed on the ground through a flange plate, a plurality of fixing holes are formed in the flange plate in an encircling mode, and reinforcing ribs are arranged between the fixing holes.

Furthermore, the fixing holes are uniformly distributed on the flange plate, the number of the fixing holes is 20, and the aperture is 80 mm.

The T-joint cross arm is set to be four layers, the main line cross arm is set to be three layers, and the main line cross arm and the lower three layers of T-joint cross arms are arranged on the same layer.

Furthermore, the height of the first layer T-joint cross arm is 15m, the distance between the second layer T-joint cross arm and the first layer T-joint cross arm is 3.5m, the distance between the third layer T-joint cross arm and the second layer T-joint cross arm is 3.5m, and the distance between the fourth layer T-joint cross arm and the third layer T-joint cross arm is 2 m.

Compared with the prior art, the utility model has the advantages that:

1. the main line wire hanging point and the T-connection line wire hanging point are on the same plane, so that the total height of the tower is reduced, steel is saved, and the construction cost is reduced.

2. Compared with the conventional design, the load of the conducting wire and the ground wire is reduced, the load borne by the tower is reduced, the weight of the tower is reduced, and the steel consumption and the concrete use amount of a matched foundation are correspondingly reduced under the same geological condition.

3. The number of the open and close lines is reduced, the workload of construction is greatly reduced, and meanwhile, the power failure time is reduced.

Drawings

Fig. 1 is a front view of the preferred embodiment of the present invention.

Fig. 2 is a side view of the embodiment of fig. 1.

Fig. 3 is a wiring perspective view of the main wire cross arm and the T-joint cross arm of the embodiment of fig. 1.

Fig. 4 is a wiring diagram of the main wire cross arm and the T-connection cross arm of the embodiment of fig. 1.

Fig. 5 is a front view of the jumper insulator seat of the embodiment of fig. 1.

Fig. 6 is a top view of the jumper insulator seat of the embodiment of fig. 1.

Fig. 7 is a schematic structural view of the ladder stand in the embodiment of fig. 1.

Figure 8 is a schematic view of the connection of the ladder to the main pole of the embodiment of figure 1.

Fig. 9 is a schematic structural view of the flange plate of the embodiment of fig. 1.

The reference numbers in the figures are: 1. a flange plate; 11. a fixing hole; 12. reinforcing ribs; 2. a main rod; 3. climbing a ladder; 31. a connecting rod; 32. a foot bar; 33. a side boss; 34. connecting sheets; 4. a jumper wire insulator base; 41. a wing hanging plate; 42. side hanging plates; 43. hanging the plate; 5. t-connecting the cross arm; 6. a main line cross arm; 7. a main line conductor; 8. a T-connection line conductor; 9. a jumper wire; 10. an insulator string.

Detailed Description

The present invention will be described with reference to the accompanying drawings, wherein the specific embodiments are described herein for illustrative and explanatory purposes only and are not limiting.

As shown in fig. 1, the double-loop T-joint steel pipe pole of the present embodiment includes a main pole 2 vertically installed, a flange 1 is installed at the bottom end of the main pole 2, and a T-joint cross arm 5, a main line cross arm 6 and a ladder 3 are installed on the main pole. The main rods 2 are 12-edge steel pipes divided into three sections, and the main rods 2 are connected in an inserted mode. Wherein, the width of the edge-to-edge of the bottom end of the main rod 2 is 1m, and the width of the edge-to-edge of the top end is 0.5 m.

The T-connection cross arms 5 are distributed in a multi-layer bilateral mode; the main line cross arm 6 and the T-shaped cross arms 5 are arranged on the same layer, and are distributed in a T shape with the T-shaped cross arms 5 on the same layer. The T-connection cross arm 5 is set to four layers, the main line cross arm 6 is set to three layers, and the main line cross arm 6 and the lower three layers of T-connection cross arms 5 are arranged in the same layer. The height of the first layer T-joint cross arm 5 is 15m, the distance between the second layer T-joint cross arm 5 and the first layer T-joint cross arm 5 is 3.5m, the distance between the third layer T-joint cross arm 5 and the second layer T-joint cross arm 5 is 3.5m, and the distance between the fourth layer T-joint cross arm 5 and the third layer T-joint cross arm 5 is 2 m.

Referring to fig. 3 and 4, the end of the main line cross arm 6 is a hanging point connected to the main line conductor 7. The tail end of the T-connection cross arm 5 is a hanging point connected with a T-connection circuit lead 8. A jumper wire 9 is connected between the two hanging points in series; an insulator string 10 is arranged at the hanging point.

More specifically, for a newly-built power inlet wire of a 110kV transformer substation, the method is realized by performing single-switch on a nearby 110kV line. The double-loop circuit is only disconnected with a loop needing to be connected into the transformer substation, a double-loop T-joint steel pipe rod of the embodiment is newly erected on the outer side of the disconnected circuit, the disconnected circuit (namely a main circuit lead 7) is connected to a main line cross arm 6, and then a transformer substation incoming line gear lead (namely a T-joint circuit lead 8) is connected in series through a suspension jumper 9 hung below a T-joint cross arm 5 in the transformer substation direction, so that line connection of a newly-built 110kV transformer substation to an upper-level 220kV transformer substation and a lower-level 220kV transformer substation is formed. The embodiment simplifies the wiring mode, greatly saves the construction work amount, reduces the steel consumption of the tower and reduces the cost.

Referring to fig. 5 and 6, the tail end of the main line cross arm 6 and the tail end of the T-joint cross arm 5 are provided with jumper wire insulator seats 4. The jumper insulator seat 4 is used for installing the insulator string 10. The jumper insulator seat 4 comprises two wing hanging plates 41, two side hanging plates 42 and two lower hanging plates 43. The two wing hanging plates 41 are respectively unfolded at two sides of the top of the tail end of the cross arm (namely the main line cross arm 6 and the T-joint cross arm 5), and are provided with a through hole. The two side hanging plates 42 are parallel and laterally protruded at the tail ends of the cross arms and are provided with two through holes. The two lower hanging plates 43 are parallel to the bottom of the tail end of the cross arm and are provided with a through hole. The through holes are selected to be used as connecting holes of the insulator string 10 according to the incoming direction and the outgoing direction of the line.

Referring to fig. 7 and 8, a ladder stand 3 is arranged on the outer side of the main pole 2 from bottom to top. The ladder stand 3 comprises a vertically arranged connecting rod 31 fixed to the side wall of the main bar 2, and foot bars 32 fixed to both sides of the connecting rod 31 in a staggered manner. The main rod 2 is provided with a side boss 33, the connecting rod 31 is close to the side boss 33 in a single or double side-by-side mode, and the connecting rod 31 and the side boss 33 are fixedly connected through a connecting piece 34.

Referring to fig. 9, the bottom end of the main pole 2 is fixed to the ground through a flange 1. The flange plate 1 is uniformly surrounded with 20 fixing holes 11 with the aperture of 80 mm. Reinforcing ribs 12 are provided between the fixing holes 11. The flange plate 1 is fixedly connected with the bottom end of the main rod 2 and is installed on the ground subjected to concrete curing treatment through bolts penetrating through the fixing holes 11.

Claims

1. A double-loop T-joint steel pipe rod is characterized by comprising:

a main rod (2) vertically arranged;

the T-shaped cross arms (5) are arranged on the main rod (2) and distributed in a multi-layer bilateral mode;

and the main line cross arms (6) are arranged on the main rod (2) at the same layer as the T-shaped cross arms (5) and are distributed in a T shape with the T-shaped cross arms (5) at the same layer.

2. The double-circuit T-joint steel pipe pole according to claim 1, characterized in that:

the tail end of the main line cross arm (6) is a hanging point connected into a main line lead (7);

the tail end of the T-connection cross arm (5) is provided with a hanging point connected with a T-connection circuit lead (8), and the two hanging points are connected in series through a jumper (9).

3. The double-circuit T-joint steel pipe pole according to claim 1 or 2, characterized in that:

jumper wire insulator seats (4) are arranged at the tail ends of the main wire cross arm (6) and the T-connection cross arm (5);

the jumper wire insulator seat (4) comprises two wing hanging plates (41) which are all provided with through holes, two side hanging plates (42) and two lower hanging plates (43); two wing hanging plates (41) are respectively unfolded at two sides of the top of the tail end of the cross arm; the two side hanging plates (42) are parallel and laterally protruded at the tail end of the cross arm; two lower hanging plates (43) are parallel to the bottom of the tail end of the cross arm in a downward convex mode.

4. The double-circuit T-joint steel pipe pole according to claim 1, characterized in that:

the outer side of the main rod (2) is provided with a ladder stand (3) from bottom to top; the ladder stand (3) comprises a connecting rod (31) which is fixed on the side wall of the main rod (2) and is vertically arranged, and pedal rods (32) which are staggered and transversely fixed on two sides of the connecting rod (31); the main rod (2) is provided with a side boss (33), the connecting rod (31) is close to the side boss (33) in a single or double side-by-side mode, and the connecting rod (31) and the side boss (33) are fixedly connected through a connecting sheet (34).

5. The double-circuit T-joint steel pipe pole according to claim 1, characterized in that:

the main rods (2) are arranged in a segmented mode, and the main rods (2) in all the segments are connected in an inserted mode.

6. The double-circuit T-joint steel pipe pole according to claim 1 or 5, characterized in that:

the main rod (2) is a 12-edge steel pipe.

7. The double-circuit T-joint steel pipe pole according to claim 1, characterized in that:

the bottom end of the main rod (2) is fixed on the ground through a flange plate (1), a plurality of fixing holes (11) are formed in the flange plate (1) in an encircling mode, and reinforcing ribs (12) are arranged between the fixing holes (11).

8. The double-circuit T-joint steel pipe pole according to claim 7, characterized in that:

the fixed orifices (11) are uniformly distributed on the flange plate (1), the number of the fixed orifices (11) is 20, and the aperture is 80 mm.

9. The double-circuit T-joint steel pipe pole according to claim 1, characterized in that:

the T-connection cross arm (5) is set to be four layers, the main line cross arm (6) is set to be three layers, and the main line cross arm (6) and the T-connection cross arm (5) of the next three layers are arranged on the same layer.

10. The double-circuit T-joint steel pipe pole according to claim 9, characterized in that:

the height of the first layer T-connection cross arm (5) is 15m, the distance between the second layer T-connection cross arm (5) and the first layer T-connection cross arm (5) is 3.5m, the distance between the third layer T-connection cross arm (5) and the second layer T-connection cross arm (5) is 3.5m, and the distance between the fourth layer T-connection cross arm (5) and the third layer T-connection cross arm (5) is 2 m.