CN110685489A - Four-loop cable down-line structure based on terminal steel pipe pole - Google Patents
Four-loop cable down-line structure based on terminal steel pipe pole Download PDFInfo
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- CN110685489A CN110685489A CN201911018061.XA CN201911018061A CN110685489A CN 110685489 A CN110685489 A CN 110685489A CN 201911018061 A CN201911018061 A CN 201911018061A CN 110685489 A CN110685489 A CN 110685489A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- 239000012212 insulator Substances 0.000 claims description 50
- 239000004020 conductor Substances 0.000 claims description 49
- 238000010276 construction Methods 0.000 claims description 48
- 239000012211 strain insulator Substances 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 10
- 230000001154 acute effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- WABPQHHGFIMREM-VENIDDJXSA-N lead-201 Chemical compound [201Pb] WABPQHHGFIMREM-VENIDDJXSA-N 0.000 description 1
- WABPQHHGFIMREM-FTXFMUIASA-N lead-202 Chemical compound [202Pb] WABPQHHGFIMREM-FTXFMUIASA-N 0.000 description 1
- WABPQHHGFIMREM-AHCXROLUSA-N lead-203 Chemical compound [203Pb] WABPQHHGFIMREM-AHCXROLUSA-N 0.000 description 1
- WABPQHHGFIMREM-BKFZFHPZSA-N lead-212 Chemical compound [212Pb] WABPQHHGFIMREM-BKFZFHPZSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
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- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
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Abstract
The invention discloses a four-loop cable outgoing structure based on a terminal steel pipe rod. The device is characterized in that two vertical rods which are connected with each other are utilized, and a plurality of transverse pole layers are respectively arranged on the two vertical rods from top to bottom; the cross arm rod layers comprise at least one cross arm rod, and the cross arm rods of two adjacent layers are not in the same vertical plane; the cross arm rod on the first vertical rod is positioned above the cross arm rod on the second vertical rod; the multi-layer cross-arm rods of the first vertical rod are respectively connected with a ground wire, upper, middle and lower layer leads, a jumper wire and a down-lead of a first loop, and upper, middle and lower layer leads, the jumper wire and the down-lead of a second loop; and the multilayer cross-arm rods of the second vertical rod are respectively connected with a third circuit, a middle and lower layer lead, a jumper wire and a down-lead, and a fourth circuit, a middle and lower layer lead, a jumper wire and a down-lead. The lower wire of the four-loop overhead line is connected and guided with the cable terminal, so that the safety distance is ensured, the space arrangement requirement is reduced as much as possible, and the three-dimensional lower wire space arrangement is formed.
Description
Technical Field
The invention belongs to the high-voltage transmission technology, particularly relates to a technology for realizing the offline of a high-voltage transmission cable by using a terminal steel pipe pole, and particularly relates to a structure with four loops of high-voltage transmission line offline.
Background
At present, cable terminals of power transmission lines of 110/220 kV voltage class are connected with overhead lines by adopting cable drop towers mostly, the drop tower structure is usually a truss structure, the structure has many structural components, the occupied area is large, and the construction and installation process is long. For example, 201721092218.X discloses a 110kV six-loop cable terminal drop tower, which uses a plurality of high-voltage drop loops, but the truss type tower has a complex structure and is not beneficial to construction and operation maintenance. For the pole tower, the structure is simple, but the existing pole tower can only be suitable for two-loop power transmission due to the cross arm design, such as 201010226694.2 discloses a method for vertically grounding the center of the composite pole tower and the pole tower thereof. How to realize four-circuit high-voltage offline by using two towers is not reported in documents at present.
Disclosure of Invention
The invention aims to provide a terminal-based steel pipe pole, which realizes four-loop high-voltage offline, occupies less land and is simple to construct.
The technical scheme of the invention is as follows: the four-loop cable off-line structure based on the terminal steel pipe rod comprises a first vertical rod and a second vertical rod, wherein the first vertical rod and the second vertical rod are connected through a plurality of connecting rods; the cross arm rod layers comprise at least one cross arm rod, and the cross arm rods of two adjacent layers are not in the same vertical plane; the cross arm rod on the first vertical rod is positioned above the cross arm rod on the second vertical rod; the multi-layer cross-arm rods of the first vertical rod are respectively connected with a ground wire, upper, middle and lower layer leads, a jumper wire and a down-lead of a first loop, and upper, middle and lower layer leads, the jumper wire and the down-lead of a second loop; and the multilayer cross-arm rods of the second vertical rod are respectively connected with a third circuit, a middle and lower layer lead, a jumper wire and a down-lead, and a fourth circuit, a middle and lower layer lead, a jumper wire and a down-lead.
The two vertical rods are respectively provided with the multilayer cross arm layers, and the high planes and the low planes are arranged in a staggered mode, so that offline connection and guide of loop cables, particularly offline connection and guide of four-loop overhead lines are facilitated, the safety distance of the four-loop overhead lines is guaranteed, the space arrangement requirement is reduced as far as possible, and three-dimensional offline space arrangement is formed.
The further technical scheme is as follows: the lower part of the first vertical rod is also provided with a first construction platform layer and a first connecting layer; the first construction platform layer is connected with the lower leads of the first loop, the middle and lower layer wires, the lightning arrester and the cable terminal; and the first construction platform layer is provided with a safety component.
The further technical scheme is as follows: the lower part of the second vertical rod is also provided with a second construction platform layer and a second connecting layer; the second platform layer is connected with the lower leads of the upper, middle and lower layer wires of the third loop, the lightning arrester and the cable terminal; and a safety component is arranged on the second construction platform layer.
The further technical scheme is as follows: the cross arm on the first vertical rod and the cross arm of the second vertical rod are arranged back to back.
The further technical scheme is as follows: the upper layer wire of a loop is connected with the first wire cross arm of the third layer of the A rod through a wire insulator strain insulator string, and the upper layer wire of the loop is connected with the first wire cross arm of the third layer of the A rod and the wire jumper cross arm of the second layer of the A rod through a wire jumper and a wire jumper insulator wire string and is connected with a down lead.
The further technical scheme is as follows: the upper layer lead of the two loops is connected with the second lead cross arm of the third layer of the A pole through the lead insulator strain insulator string, and the upper layer lead of the two loops is connected with the second lead cross arm, the second jumper cross arm of the second layer of the A pole and the third jumper cross arm of the third layer of the A pole through the lead insulator jumper string and is connected with the down lead.
The upper layer of wires of the two loops are led down by adopting a winding and jumping structure through the two layers of cross arm rods, so that the safety is ensured, and the space is saved.
The further technical scheme is as follows: the first construction platform layer comprises six cross arms which are connected by an A rod and arranged along the radial direction; each cross arm is connected with a safety component, the safety components are a wire insulator tension string, a lightning arrester and a cable terminal from outside to inside in the radial direction, and the power receiving ends of the safety components are sequentially connected by jumper wires; two cross arms at the outermost side are arranged at an angle of 180 degrees, and the included angle between the cross arms and the central connecting line is 72 degrees. The included angle intervals of the other cross arms are set in 36 degrees.
The further technical scheme is as follows: the first connecting layer comprises six cross arms which are connected by an A rod and arranged along the radial direction, and the distribution of the cross arms corresponds to that of the first construction platform layer.
The vertical rods can be steel pipe rods, and the connecting rods connected between the two vertical steel pipe rods are connected through bolts. The connecting rods connect two vertical steel pipe rods through transverse connection and/or oblique connection.
The cross arm layer on the first vertical rod and the cross arm layer of the second vertical rod are arranged back to back. The cross arms are distributed on the vertical rods along the radial direction by taking the vertical rods as the circle centers, and the arrangement towards the back means that the cross arms are respectively arranged at two sides of the diameter by taking the diameter as the reference.
The arrangement for the cross arms on the two vertical bars may be: the first vertical rod top-down is provided with a plurality of layers of cross arms, wherein the top layer of each layer of cross arms comprises two ground wire cross arm layers arranged at 180 degrees, a first upper layer wire down leading wire cross arm layer with an acute angle, a first upper layer wire cross arm layer with a 180-degree angle, a first middle layer wire cross arm layer with an obtuse angle, a first middle layer wire down leading wire cross arm layer and a first lower layer wire cross arm layer with a 180-degree angle.
The cross arms of the first upper layer wire cross arm layer and the cross arms of the first lower layer wire cross arm layer are not in the same vertical plane.
First upper strata wire cross arm layer is including being two first upper strata wire cross arms that 180 arranged to and the first upper strata wire downlead cross arm that sets up between two first upper strata wire cross arms.
The vertical pole top-down of second sets up the multilayer cross arm including the second upper wire cross arm layer that has 180 contained angles, second upper wire downlead cross arm layer, has the second middle level wire cross arm layer of obtuse angle contained angle, has the second lower floor's wire cross arm layer of acute angle contained angle.
The first construction platform layer comprises a plurality of cross arms arranged along the radial direction, and the second construction platform layer comprises a plurality of cross arms arranged along the radial direction; the first platform layer and the second platform layer are arranged back to back.
The first connecting layer comprises a plurality of cross-arm rods arranged along the radial direction, and the second connecting layer comprises a plurality of cross-arm rods arranged along the radial direction; the first connecting layer and the second connecting layer are arranged back to back.
The construction platform has the preferable technical characteristics that the first construction platform layer and the second construction platform layer are at the same height.
It is a preferred feature that the first and second tie layers are at the same height.
The lower part of the vertical rod is provided with the construction platform layer, and the down lead, the cable terminal and the lightning arrester of the loop overhead line are all intensively arranged on the construction platform layer, so that the installation and construction are facilitated, and the arrangement of safety components is facilitated.
The construction is convenient, and the occupied area is small. The safety performance is high.
The down line structure changes the lead wire coming from the horizontal direction into a 12-edge vertical down line with the steel pipe pole as the center through the structural design of the down line pole. Compared with the prior art, the invention can directly reduce the 1-base double-loop offline tower, effectively reduce the occupied area, effectively reduce the construction cost, ensure the safety of the electrical distance and save tower materials.
Drawings
Fig. 1 is a multi-layer cross arm layer-by-layer schematic diagram of a four-loop cable offline steel pipe pole.
Fig. 2 is a schematic diagram of connection of two vertical rods of a steel pipe rod of a four-loop cable offline.
Fig. 3A is a schematic diagram of arrangement of first-layer cross arms of the vertical rods.
Fig. 4A is a schematic diagram of the arrangement of the cross arms of the second layer of the vertical rods.
Fig. 5A is a schematic diagram of the arrangement of the third layer cross arms of the vertical rods.
Fig. 6A is a schematic diagram of arrangement of a fourth layer cross arm of the vertical rod.
Fig. 7A is a schematic view of a fifth layer cross arm arrangement of the vertical rod.
Fig. 8A is a schematic diagram of the arrangement of the sixth layer cross arms of the vertical rods.
Fig. 9B is a schematic diagram of a seventh level cross arm arrangement of the vertical rod.
Fig. 10B is a schematic view of an eighth level cross arm arrangement of vertical poles.
FIG. 11B is a schematic view of a ninth tier of cross arm arrangements of vertical poles.
Fig. 12B is a schematic view of a tenth tier cross arm arrangement of vertical poles.
Fig. 13A, B are schematic diagrams of the tenth layer cross arm arrangement of the vertical rod.
Fig. 14A, a schematic diagram of the arrangement of the twelfth layer cross arm of the B vertical rod.
FIG. 15 is a four-circuit bottom schematic.
Fig. 16 is a schematic top view of the four circuits.
Detailed Description
The scope of the invention is not to be restricted by the following detailed description, and any modifications, equivalents and improvements including the technical features which are within the spirit and principle of the present invention should be included in the scope of the present invention.
The first vertical bar will be referred to as the a-bar and the second vertical bar as the B-bar hereinafter. Is an 110/220 KV same-tower four-circuit cable down-line steel pipe pole.
As shown in FIG. 2, the A rod and the B rod are connected by a connecting rod, and a plurality of connecting rods 20 can be connected by bolts. The plurality of connecting rods 20 connect two vertical steel pipe poles by cross-linking and/or diagonal-linking. The plurality of connecting rods 20 form a truss structure in a vertical plane, improving the stability of the a and B rods. The height of the A rod is higher than that of the B rod. The cross arm layers on the A poles are all arranged on the cross arm layers of the B poles.
As shown in figures 1 and 2, the A pole is provided with six cross arm layers from top to bottom and is used for connecting and leading down an upper cable, a middle cable and a lower cable of a loop, an upper cable, a middle cable and a lower cable of a loop and connecting a ground wire. The B rod is provided with five cross arm layers from top to bottom and is used for connecting and leading down three-loop upper, middle and lower cables and four-loop upper, middle and lower cables.
A pole and B pole lower part are equipped with construction platform layer 11 and articulamentum 12 with the layer on the same layer, and construction platform layer 11 is concentrated down the guide platform layer with the downlead of return circuit cable conductor to set up safety component last, like wire insulator strain insulator string 11.1, arrester 11.2 and cable terminal 11.3. The connecting layer 12 connects the down cable in a limiting way.
The line connecting the centers of the A rod and the B rod is an angle reference system of the cross arm and is hereinafter referred to as a center line.
Specifically, as shown in fig. 1, 2, 3, 15, the uppermost layer of the a pole is a ground wire cross arm layer 1, which connects two ground wire cross arms arranged at 180 °, and the two ground wire cross arms are respectively connected with the ground wires 100 of the four loops.
The ground wire cross arm is perpendicular to the central connecting wire.
Specifically, as shown in fig. 1, 2, 4, 15, a pole second layer, an upper layer wire down leading jumper cross arm layer 2. Draw wire jumper cross arm layer down including the first upper wire that is acute angle contained angle that A pole is connected, specific two wire jumper cross arms are special acute angle, and the contained angle between them is 90.
Wherein the jumper wire cross arm 2.1, the jumper wire cross arm 2.2 is different with the contained angle between two ground wire cross arms respectively, and the contained angle between concrete jumper wire cross arm 2.1 and the ground wire cross arm is 54 degrees, and the contained angle between jumper wire cross arm 2.2 and the ground wire cross arm is 36 degrees
Specifically, as shown in fig. 1, 2, 5, 15, a third layer of a rod a, a first upper wire cross arm layer 3 with an included angle of 180 degrees, includes that the rod a connects two wire cross arms 3.1 and 3.2 arranged in 180 degrees and is perpendicular to a central connecting line.
The second loop upper conductor downlead jumper cross arm that sets up between two first upper conductor cross arms 3.1,3.2, and the jumper cross arm 2.3 as downlead and jumper wire. Jumper cross arm 2.3 is arranged perpendicular to wire cross arms 3.1, 3.2.
The upper conductor 101 of one loop is connected with the conductor cross arm 3.1 through the conductor insulator tension string, and the upper conductor 201 of the two loops is connected with the conductor cross arm 3.2 through the conductor insulator tension string.
The jumper wire is connected with an upper layer lead 101 of the loop, is connected with the lead cross arm 3.1 and the jumper cross arm 2.1 through a lead insulator jumper string and is connected with the down lead 111, and the down lead is connected with the corresponding construction platform cross arm of the platform layer 11A through a lead insulator strain insulator string.
The jumper 210 is connected with the upper layer lead 201 of the two loops, is connected with the lead cross arm 3.2, the jumper cross arm 2.2 and the jumper cross arm 2.3 through a lead insulator jumper string and is connected with the downlead 211, and the downlead is connected with the corresponding construction platform cross arm of the platform layer 11A through a lead insulator strain insulator string.
Specifically, as shown in fig. 1, 2, 6, 15, the fourth layer of the a rod is a first layer, a middle layer of the two loop wires is connected with a wire cross arm layer 4, and the fourth layer comprises a rod a connected with two wire cross arms 4.1 and 4.2 arranged at an obtuse angle; the angle between the wire cross arm 4.2 and the central connecting line is 72 degrees.
Specifically, fig. 1, 2, 7, 15, a rod a, a fifth layer, a middle layer wire down lead wire cross arm layer 5. The jumper wire comprises a jumper wire cross arm 5 connected with a rod A, wherein an included angle between the jumper wire cross arm 5 and a central connecting line is 36 degrees, and the jumper wire cross arm is close to a cross arm 4.2.
The first loop middle layer wire 102 is connected with the wire cross arm 4.1 through a wire insulator tension string, and the second loop middle layer wire 202 is connected with the wire cross arm 4.2 through the wire insulator tension string.
The jumper wire is connected with a loop middle layer lead wire 102, is connected with a lead cross arm 4.1 through a lead insulator jumper string and is connected with a down lead 112, and the down lead is connected with a construction platform cross arm corresponding to the platform layer 11A through a lead insulator strain insulator string.
The jumper wire is connected with the middle-layer lead 202 of the second loop, is connected with the lead cross arm 4.2 and the jumper cross arm 5 through the lead insulator jumper string and is connected with the down lead 212, and the down lead is connected with the corresponding construction platform cross arm of the platform layer 11A through the lead insulator strain insulator string.
Specifically, as shown in fig. 1, 2, 8, 15, a rod sixth layer, a first lower layer wire cross arm layer 6 with an included angle of 180 degrees comprises an a rod connecting two cross arms 6.1 and 6.2 with an included angle of 180 degrees. The included angle between the two cross arms and the central connecting line is 72 degrees.
The loop lower conductor 103 is connected with the conductor cross arm 6.1 through the conductor insulator tension string, and the loop lower conductor 203 is connected with the conductor cross arm 6.2 through the conductor insulator tension string.
The jumper wire is connected with a loop lower layer wire 103, is connected with a wire cross arm 6.1 through a wire insulator jumper string and is connected with a down lead 113, and the down lead is connected to a construction platform cross arm corresponding to the platform layer 11A through a wire insulator strain insulator string.
The jumper wire is connected with the middle-layer lead 203 of the second loop, is connected with the lead cross arm 6.2 through a lead insulator jumper string and is connected with the down lead 213, and the down lead is connected with the construction platform cross arm corresponding to the platform layer 11A through a lead insulator strain insulator string.
Specifically, as shown in fig. 1, 2, 9, 15, a seventh layer of B-bar, a second upper wire cross-arm layer 7 with an included angle of 180 °, includes a B-bar connecting two wire cross-arms 7.1, 7.2 with an included angle of 180 °. The included angle between the two wire cross arms and the central connecting line is 72 degrees.
Specifically, as shown in fig. 1, 2, 10, 15, the eighth layer of the B-pole is provided with a second upper-layer down-lead jumper cross arm layer 8, which comprises a jumper cross arm 8 connected with the B-pole, and an included angle between the jumper cross arm 8 and a central connecting line is 0 degree and is far away from the a-pole.
The three-loop upper conductor 301 is connected with the conductor cross arm 7.1 through a conductor insulator tension string, and the four-loop upper conductor 401 is connected with the conductor cross arm 7.2 through the conductor insulator tension string.
The jumper wire is connected with the upper-layer lead 301 of the three loops, is connected with the lead cross arm 7.1 through a lead insulator jumper string, is connected with the jumper cross arm 8 and is connected with the downlead, and the downlead is connected with the corresponding construction platform cross arm of the platform layer 11B through a lead insulator strain insulator string.
The jumper wire is connected with the upper-layer lead 401 of the four-loop, is connected with the lead cross arm 7.2 through a lead insulator jumper string and is connected with the down lead 411, and the down lead is connected to the construction platform cross arm corresponding to the platform layer 11B through a lead insulator strain insulator string.
Specifically, fig. 1, 2,11, 15, a ninth layer of B-bar, a second middle layer wire cross-arm layer 9 with obtuse included angle. Comprises two obtuse-angle wire cross arms 9.1 and 9.2 connected by a B rod; the angle between the wire cross arms 9.1,9.2 and the central connecting line is 72 degrees, and the wire cross arms face away from the A rod.
The three-circuit middle layer conductor 302 is connected with the conductor cross arm 9.1 through a conductor insulator tension string, and the four-circuit middle layer conductor 402 is connected with the conductor cross arm 9.2 through the conductor insulator tension string.
The jumper wire is connected with the middle layer lead 302 of the three loops, is connected with the lead cross arm 9.1 through a lead insulator jumper string and is connected with the down lead 312, and the down lead is connected with the construction platform cross arm corresponding to the platform layer 11B through a lead insulator strain insulator string.
The jumper wire is connected with a middle-layer wire 402 of the four-loop, is connected with a wire cross arm 9.2 through a wire insulator jumper string and is connected with a down conductor 412, and the down conductor is connected with a construction platform cross arm corresponding to the platform layer 11B through a wire insulator strain insulator string.
Specifically, fig. 1, 2, 12, 15, the tenth layer of the B-bar, and the second lower wire cross-arm layer 10 with an acute included angle. Comprises two lead cross arms 10.1 and 10.2 which are connected by a B rod and form acute angles; the included angle between the wire cross arms 10.1 and 10.2 and the central connecting line is 36 degrees, and the back faces to the A rod.
The three-loop lower conductor 303 is connected with the conductor cross arm 10.1 through a conductor insulator tension string, and the four-loop lower conductor 403 is connected with the conductor cross arm 10.2 through a conductor insulator tension string.
The jumper wire is connected with the lower-layer lead 303 of the three-loop, is connected with the lead cross arm 10.1 through a lead insulator jumper string and is connected with the down lead 312, and the down lead is connected with the construction platform cross arm corresponding to the platform layer 11B through a lead insulator strain insulator string.
The jumper wire is connected with the lower layer lead 403 of the four-loop, is connected with the lead cross arm 10.2 through a lead insulator jumper string and is connected with the down lead 413, and the down lead is connected with the construction platform cross arm corresponding to the platform layer 11B through a lead insulator strain insulator string.
Specifically, fig. 1, 2, 13, 15, a rod a, a rod B, a eleventh layer, a construction platform layer 11A and a construction platform layer 11B. The construction platform layer leads each phase of lead of each loop to the construction platform layer through the lead insulator strain insulator string, each phase of cable to the cable terminal and the lightning arrester, and is provided with a safety component.
The construction platform level 11A includes six cross arms arranged in the radial direction connected by a-bars. Each cross arm is connected with a safety component, the safety components are a wire insulator tension string 11.1, a lightning arrester 11.2 and a cable terminal 11.3 from outside to inside in the radial direction, and the power receiving ends of the safety components are connected in sequence by jumper wires.
The two outermost cross arms 11a6.1,11a6.2 are arranged at 180 degrees, and the included angle between the two outermost cross arms and the central connecting line is 72 degrees. The included angle intervals of the other cross arms are set in 36 degrees.
The cross arm 11A6.1 is connected with a lower-layer lead down wire of a loop and corresponds to the lead cross arm 6.1; the cross arm 11a6.2 connects the two-loop lower layer lead down corresponding to the wire cross arm 6.2.
Four cross arms 11a4.1,11a2.1,11a2.3,11a5 are arranged between two cross arms 11a6.1,11a 6.2. Wherein the cross arm 11A4.1 is connected with the down lead of the middle layer lead of the first loop and corresponds to the cross arm 4.1 of the lead, and the cross arm 11A5 is connected with the down lead of the middle layer lead of the second loop and corresponds to the cross arm 5 of the jumper; cross arm 11A2.1 connects one return circuit upper strata wire downlead and corresponds with wire jumper cross arm 2.1, and cross arm 11A2.3 connects two return circuit upper strata wire downleads and corresponds with wire jumper cross arm 2.3.
The construction platform layer 11B includes six cross arms arranged in the radial direction connected by the B-bars. Each cross arm is connected with a safety component, the safety components are a wire insulator tension string 11.1, a lightning arrester 11.2 and a cable terminal 11.3 from outside to inside in the radial direction, and the power receiving ends of the safety components are connected in sequence by jumper wires.
The two outermost cross arms 11B67.2,11B9.1 are arranged at 180 ° to form an angle of 72 ° with the central connecting line. The included angle intervals of the other cross arms are set in 36 degrees.
The cross arm 11B7.2 is connected with the upper-layer lead down wire of the four-circuit and corresponds to the wire cross arm 7.2; the cross arm 11B9.1 is connected with the down lead of the middle layer conductor of the three loops and corresponds to the conductor cross arm 9.1.
Four cross arms 11B9.2,11B10.2,11B8,11B10.1 are arranged between the two outermost cross arms 11B67.2,11B 9.1. Wherein the cross arm 11B9.2 is connected with the lower lead of the middle layer wire of the four loops and corresponds to the cross arm 9.2 of the wire, and the cross arm 11B10.2 is connected with the lower lead of the upper layer wire of the four loops and corresponds to the cross arm 10.2 of the wire; cross arm 11B8 connects the three-circuit upper layer lead down corresponding to jumper cross arm 8, and cross arm 11B10.1 connects the three-circuit lower layer lead down corresponding to lead cross arm 10.1.
Specifically, fig. 1, 2, 14, 15, a rod twelfth layer, a connecting layer 12A and a connecting layer 12B. The connecting layer 12A includes six cross arms arranged along the radial direction and connected by a rod a, the distribution corresponds to that of the platform layer 11A, and each phase of cable led down by the cross arm corresponding to the platform layer 11A is connected respectively. The connecting layer 12B includes six cross arms arranged along the radial direction and connected by the B rods, and the distribution corresponds to that of the platform layer 11B, and each phase of cable led down by the cross arm corresponding to the platform layer 11B is connected respectively.
As shown in FIG. 16, the cross arms on the A and B rods are arranged in a back-to-back manner.
Claims (9)
1. A four-loop cable off-line structure based on a terminal steel pipe rod comprises a first vertical rod and a second vertical rod, and is characterized in that the first vertical rod and the second vertical rod are connected through a plurality of connecting rods, a plurality of layers of transverse load rod layers are arranged on the first vertical rod from top to bottom, and a plurality of layers of transverse load rod layers are arranged on the second vertical rod from top to bottom; the cross arm rod layers comprise at least one cross arm rod, and the cross arm rods of two adjacent layers are not in the same vertical plane; the cross arm rod on the first vertical rod is positioned above the cross arm rod on the second vertical rod; the multi-layer cross-arm rods of the first vertical rod are respectively connected with a ground wire, upper, middle and lower layer leads, a jumper wire and a down-lead of a first loop, and upper, middle and lower layer leads, the jumper wire and the down-lead of a second loop; and the multilayer cross-arm rods of the second vertical rod are respectively connected with a third circuit, a middle and lower layer lead, a jumper wire and a down-lead, and a fourth circuit, a middle and lower layer lead, a jumper wire and a down-lead.
2. The four-circuit cable drop structure based on the terminal steel pipe rod as claimed in claim 1, wherein a first construction platform layer and a first connecting layer are further arranged at the lower part of the first vertical rod; the first construction platform layer is connected with the lower leads of the first loop, the middle and lower layer wires, the lightning arrester and the cable terminal; and the first construction platform layer is provided with a safety component.
3. The four-circuit cable drop structure based on the terminal steel pipe rod as recited in claim 1, wherein a second construction platform layer and a second connecting layer are further arranged at the lower part of the second vertical rod; the second platform layer is connected with the lower leads of the upper, middle and lower layer wires of the third loop, the lightning arrester and the cable terminal; and a safety component is arranged on the second construction platform layer.
4. The four-circuit cable drop structure based on terminal steel pipe poles according to claim 1, wherein the cross arm on the first vertical pole and the cross arm on the second vertical pole are arranged back to back.
5. The four-circuit cable drop structure based on the terminal steel pipe pole as claimed in claim 1, wherein the upper conductor of the loop is connected to the first conductor cross arm of the third layer of the a-pole through a conductor insulator strain insulator string, and the upper conductor of the loop is connected to the first conductor cross arm of the third layer of the a-pole and the jumper cross arm of the second layer of the a-pole and connected to the drop line through a conductor insulator jumper string.
6. The four-circuit cable drop structure based on the terminal steel pipe pole as claimed in claim 1 or 5, wherein the upper conductor of the two circuits is connected with the second conductor cross arm of the third layer of the A pole through a conductor insulator tension string, and the upper conductor of the two circuits is connected with the second conductor cross arm, the second jumper cross arm of the second layer of the A pole and the third jumper cross arm of the third layer of the A pole and connected with the drop line through a conductor insulator jumper string.
7. The terminal steel pipe pole-based four-circuit cable drop structure of claim 2, wherein the first construction platform layer comprises six cross arms arranged in a radial direction and connected by an A pole; each cross arm is connected with a safety component, the safety components are a wire insulator tension string, a lightning arrester and a cable terminal from outside to inside in the radial direction, and the power receiving ends of the safety components are sequentially connected by jumper wires; two cross arms at the outermost side are arranged at an angle of 180 degrees, and the included angle between the cross arms and the central connecting line is 72 degrees. The included angle intervals of the other cross arms are set in 36 degrees.
8. The terminal steel pipe pole-based four-circuit cable drop structure of claim 2 or 7, wherein the first connection layer comprises six cross arms arranged in a radial direction connected by the A-poles, and the distribution corresponds to the distribution of the cross arms of the first construction platform layer.
9. The terminal steel pipe pole-based four-circuit cable drop structure of claim 2 or 3, wherein the first construction platform layer and the second construction platform layer are at the same height; the first connection layer and the second connection layer are at the same height.
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| CN201911018061.XA CN110685489B (en) | 2019-10-24 | 2019-10-24 | Four-loop cable down-line structure based on terminal steel pipe pole |
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| CN201911018061.XA CN110685489B (en) | 2019-10-24 | 2019-10-24 | Four-loop cable down-line structure based on terminal steel pipe pole |
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| CN110685489B CN110685489B (en) | 2021-06-08 |
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| JP2012060711A (en) * | 2010-09-06 | 2012-03-22 | Asahi Electric Works Ltd | Suspended jumper device |
| CN102477810A (en) * | 2010-11-29 | 2012-05-30 | 江苏省电力公司吴江市供电公司 | Steel pipe tower for transmission line and construction method thereof |
| CN203684772U (en) * | 2014-01-22 | 2014-07-02 | 河北省电力勘测设计研究院 | 220 kV/110 kV quadruple-loop cable terminal steel pipe pole |
| CN205476780U (en) * | 2016-03-18 | 2016-08-17 | 坤能电力工程设计（上海）有限公司 | 220kV exchanges with four return circuit strain insulator angle -steel tower in tower |
| CN205509438U (en) * | 2016-04-08 | 2016-08-24 | 中国能源建设集团江苏省电力设计院有限公司 | Device is down drawn at four loop cable terminals |
| CN208127844U (en) * | 2018-05-18 | 2018-11-20 | 青岛市恒顺众昇集团股份有限公司 | With four circuit single wire cable terminal tower of tower |
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2019
- 2019-10-24 CN CN201911018061.XA patent/CN110685489B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012060711A (en) * | 2010-09-06 | 2012-03-22 | Asahi Electric Works Ltd | Suspended jumper device |
| CN102477810A (en) * | 2010-11-29 | 2012-05-30 | 江苏省电力公司吴江市供电公司 | Steel pipe tower for transmission line and construction method thereof |
| CN203684772U (en) * | 2014-01-22 | 2014-07-02 | 河北省电力勘测设计研究院 | 220 kV/110 kV quadruple-loop cable terminal steel pipe pole |
| CN205476780U (en) * | 2016-03-18 | 2016-08-17 | 坤能电力工程设计（上海）有限公司 | 220kV exchanges with four return circuit strain insulator angle -steel tower in tower |
| CN205509438U (en) * | 2016-04-08 | 2016-08-24 | 中国能源建设集团江苏省电力设计院有限公司 | Device is down drawn at four loop cable terminals |
| CN208127844U (en) * | 2018-05-18 | 2018-11-20 | 青岛市恒顺众昇集团股份有限公司 | With four circuit single wire cable terminal tower of tower |
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| CN110685489B (en) | 2021-06-08 |
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