CN215580282U - Three-link device for leading overhead line to ground - Google Patents
Three-link device for leading overhead line to ground Download PDFInfo
- Publication number
- CN215580282U CN215580282U CN202121892156.7U CN202121892156U CN215580282U CN 215580282 U CN215580282 U CN 215580282U CN 202121892156 U CN202121892156 U CN 202121892156U CN 215580282 U CN215580282 U CN 215580282U
- Authority
- CN
- China
- Prior art keywords
- ground
- overhead line
- supporting rod
- bracing piece
- 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 discloses a three-connecting-rod device for leading an overhead line into a ground, which comprises supporting rods, wherein the supporting rods comprise a first supporting rod, a second supporting rod and a third supporting rod which are arranged in a straight line shape, and a plurality of first cross arms are arranged on two sides of the first supporting rod; one side of the second supporting rod is provided with a plurality of second cross arms, and the other side of the second supporting rod is provided with a fourth cross arm; the bilateral symmetry of third bracing piece is provided with the third cross arm, and subaerial a plurality of cable termination heads that all are provided with between first bracing piece and the second bracing piece, between second bracing piece and the third bracing piece, a side gap of a plurality of cable termination heads is provided with the arrester, and two sets of three-phase overhead line have hung respectively to the both sides of bracing piece. The three-connecting-rod device has the advantages of simple structure, small occupied area, reasonable layout, enough large electrical clearance, and strong stability and reliability of operation; the cable terminal and the lightning arrester are mounted on the ground, so that construction and daily operation and maintenance are facilitated, and meanwhile, double-loop power supply is adopted, and the reliability of power supply is improved.
Description
Technical Field
The utility model relates to the field of electric wire erection, in particular to a three-link device for an overhead line to be led into a ground.
Background
With the economic development and social progress, urban construction land is short, high-voltage transmission lines are basically laid in urban areas or development areas in a cable mode, but overhead transmission lines still occupy a large part of the proportion. At the junction between cities and rural areas, more overhead lines are combined with cable lines, so that the reasonable selection of the overhead-cable conversion scheme is an important technical content of design, installation, operation and maintenance.
At present, the scheme of overhead underground installation with 10kV, 35kV and 110kV voltage levels adopts a cable terminal to be installed on an overhead terminal tower (pole). However, the terminal head and the lightning arrester with higher voltage level have heavier self weight and require larger electrical clearance, and the installation on the body structure of the overhead terminal tower (pole) inevitably causes the problems of unstable structure and incapability of ensuring the electrical clearance; the reasonable selection is built on stilts with the installation scheme of cable conversion not only needs to satisfy the structural load requirement, still needs to satisfy the electric clearance requirement, and the most important design scheme needs to combine the land use condition, accomplishes the guideline of practicing thrift the land use.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies of the prior art, the present invention provides a stable-running overhead line ground access three-bar linkage.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:
the three-connecting-rod device comprises supporting rods, wherein the supporting rods comprise a first supporting rod, a second supporting rod and a third supporting rod which are arranged in a straight line shape, and a plurality of first cross arms are arranged on two sides of the first supporting rod; one side of the second supporting rod is provided with a plurality of second cross arms, and the other side of the second supporting rod is provided with a fourth cross arm; the bilateral symmetry of third bracing piece is provided with the third cross arm, and subaerial a plurality of cable termination heads that all are provided with between first bracing piece and the second bracing piece, between second bracing piece and the third bracing piece, a side gap of a plurality of cable termination heads is provided with the arrester, and two sets of three-phase overhead line have hung respectively to the both sides of bracing piece.
Furthermore, three-phase overhead lines of one group are respectively hung on three first cross arms on one side of the first supporting rod, and the end parts of the three-phase overhead lines are horizontally arranged and hung on a fourth cross arm; the other group of three-phase overhead lines are respectively hung on the three first cross arms on the other side of the first supporting rod and connected with the three second cross arms, and the end parts of the three-phase overhead lines are horizontally arranged and hung on the third cross arms on the two sides of the third supporting rod.
Furthermore, the three-phase overhead line on the fourth cross arm and the three-phase overhead line on the third cross arm are both fixedly connected with the three cable terminal heads through the three downleads; the lightning arrester is provided with a lead-in wire, and the lead-in wire is fixedly connected with a down lead on a corresponding cable terminal.
Further, first cross arm, second cross arm, third cross arm and fourth cross arm all pass through insulator and three-phase overhead line fixed connection.
Furthermore, a plurality of first cross arms, second cross arm and the equal vertical align to grid of third cross arm are on the bracing piece that corresponds.
Furthermore, the two sides of the upper ends of the first supporting rod, the second supporting rod and the third supporting rod are provided with grounding cross arms used for hanging ground wires.
Further, the cable terminal is fixedly arranged on the ground through a terminal support, and the lightning arrester is fixedly arranged on the ground through a steel column.
Further, the terminal bracket comprises a plurality of steel pipe stand columns, the steel pipe stand columns are fixedly connected with a plurality of angle steel connecting plates, connecting steel plates are arranged at the tops of the steel pipe stand columns, cable avoiding holes are formed in the connecting steel plates and the angle steel connecting plates, and openings are formed in the side faces of the cable avoiding holes.
The utility model has the beneficial effects that:
1. The three-link device has a simple structure and small occupied area, the first cross arm, the second cross arm, the third cross arm and the fourth cross arm are used for hanging the three-phase overhead line, the reasonable layout ensures that the electrical clearance between the three-phase overhead line is large enough, and the running stability and reliability are high; the cable terminal and the lightning arrester are mounted on the ground, construction and daily operation and maintenance are facilitated, and meanwhile, a double-loop three-phase overhead line is adopted, so that power failure of any one path does not affect power supply of the other path, and reliability of power supply is improved.
2. Two groups of three-phase overhead lines are introduced in the same direction, and the end parts of the two groups of three-phase overhead lines are horizontally arranged, so that the three-phase overhead lines at the positions can be conveniently introduced into the ground.
3. The two groups of three-phase overhead lines are connected to the cable terminal heads through the down lead, and the cable terminal heads are conveniently connected with underground cables to achieve the purpose that the overhead lines are led into the ground; the lightning arrester serves to protect the cable termination against high transient overvoltages generated by lightning.
4. The insulator makes three-phase overhead line and bracing piece insulated connection, security when reinforcing operation and maintenance.
5. The arrangement mode of the first cross arms, the second cross arms and the third cross arms ensures that the electrical clearance between the three-phase overhead lines is large enough, and is favorable for the stability and reliability of the operation of the three-phase overhead lines.
6. The grounding cross arm is used for suspending a grounding wire of the three-phase overhead line.
7. Through terminal support and steel pipe stand, with the equal insulating spaced setting of cable terminal and arrester subaerial, strengthen its operation and the fail safe nature of maintaining.
8. Terminal support simple structure, the steel pipe stand supports stably, and the angle iron connecting plate is connected firmly, and the cable dodges the hole and conveniently goes into ground cable and wears to establish to cable terminal department, and the side open-ended setting simultaneously conveniently goes into putting into and taking out of ground cable.
Drawings
Fig. 1 is a perspective view of a three-link apparatus.
Fig. 2 is a connection diagram of a cable termination and a lightning arrester.
Fig. 3 is a side view of a terminal support.
Fig. 4 is a top view of the terminal support.
The cable terminal comprises a first supporting rod 1, a second supporting rod 2, a second supporting rod 3, a third supporting rod 4, a cable terminal 5, a lightning arrester 6, a three-phase overhead line 7, a down conductor 8, a lead-in conductor 9, an insulator 10, a grounding cross arm 11, a terminal support 12, a steel column 13, a steel pipe column 14, an angle steel connecting plate 15, a connecting steel plate 16, a cable avoiding hole 17, an opening 18, an installation hole 101, a first cross arm 201, a second cross arm 202, a fourth cross arm 301 and a third cross arm.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model as defined and defined in the appended claims, and all changes that come within the meaning and range of equivalency of the claims are to be embraced therein.
As shown in fig. 1, the three-bar linkage of the overhead line lead-in ground of this scheme includes support rods, the support rods include a first support rod 1, a second support rod 2 and a third support rod 3 arranged in a straight line, and the second support rod 2 is disposed between the first support rod 1 and the third support rod 3, three first cross arms 101 are symmetrically disposed on both sides of the first support rod 1, three second cross arms 201 are disposed on one side of the second support rod 2, a fourth cross arm 202 is disposed on the other side of the second support rod, a third cross arm 301 is symmetrically disposed on both sides of the third support rod 3, the first cross arm 101, the second cross arm 201, the third cross arm 301 and the fourth cross arm 202 are used for suspending a three-phase overhead line 6, and the reasonable layout thereof makes an electrical gap between the three-phase overhead lines 6 sufficiently large, and the operation thereof is stable and reliable.
As shown in fig. 1, three cable terminals 4 are arranged on the ground between the first support rod 1 and the second support rod 2, and between the second support rod 2 and the third support rod 3, three lightning arresters 5 corresponding to the three cable terminals 4 are arranged in a gap on one side of each cable terminal 4, the cable terminals 4 and the lightning arresters 5 are arranged in a straight line, the arrangement direction is perpendicular to the arrangement direction between the support rods, and two sets of three-phase overhead lines 6 are respectively suspended on two sides of each support rod. The cable terminal 4 and the lightning arrester 5 are mounted on the ground, so that construction and daily operation and maintenance are facilitated, and meanwhile, the double-loop three-phase overhead line 6 is adopted, so that when any one path is powered off, the power supply of the other path is not influenced, and the reliability of power supply is improved.
As shown in fig. 1, three-phase overhead lines 6 of one group are respectively hung on three first cross arms 101 on one side of a first supporting rod 1, and the end parts of the three-phase overhead lines are horizontally arranged and hung at both ends and the middle part of a fourth cross arm 202 at uniform intervals; the other group of three-phase overhead lines 6 are respectively hung on the three first cross arms 101 on the other side of the first supporting rod 1 and connected with the three second cross arms 201, the end parts of the three-phase overhead lines 6 are horizontally arranged and hung on the third cross arms 301 on the two sides of the third supporting rod 3 at uniform intervals, and the hanging points are respectively arranged at the outer end parts of the two third cross arms 301 and the middle points of the two third cross arms 301. Two sets of three-phase overhead line 6 same direction is introduced, and sets up respectively in the both sides of bracing piece, makes two sets of three-phase overhead line 6 each other not influence, and the mode of horizontal arrangement is all adopted to its tip, makes things convenient for the three-phase overhead line 6 of this department to introduce ground.
As shown in fig. 1 and 2, the three-phase overhead line 6 at the fourth cross arm 202 is fixedly connected with the three cable terminations 4 through the three down-leads 7; the three-phase overhead line 6 on the third cross arm 301 is fixedly connected with the three cable terminations 4 through the three down-leads 7, the lightning arrester 5 is provided with the lead-in wires 8, and the lead-in wires 8 are fixedly connected with the corresponding down-leads 7. Two groups of three-phase overhead lines 6 are connected to the cable terminal 4 through the down lead 7, and the cable terminal 4 is conveniently connected with a cable buried underground to achieve the purpose of leading the overhead lines into the ground; the lightning arrester 5 serves to protect the cable termination 4 from high transient overvoltages generated by lightning.
As shown in fig. 1, the first cross arm 101, the second cross arm 201, the third cross arm 301 and the fourth cross arm 202 are all fixedly connected with the three-phase overhead line 6 through the insulator 9, so that the three-phase overhead line 6 is in insulated connection with the supporting rod, and the safety during operation, overhaul and maintenance is enhanced; first cross arm 101, second cross arm 201 and the equal vertical align of third cross arm 301 are on the bracing piece that corresponds, and such arrangement has guaranteed sufficient electric clearance between the three-phase overhead line 6, is favorable to the reliable and stable nature of the operation of three-phase overhead line 6.
As shown in fig. 1, both sides of the uppermost ends of the first support bar 1, the second support bar 2, and the third support bar 3 are provided with grounding cross arms 10 for suspending a ground wire, and the grounding cross arms 10 are used for suspending a ground wire of the three-phase overhead line 6.
As shown in fig. 2, 3 and 4, the cable terminal 4 is fixedly arranged on the ground through a terminal support 11, the lightning arrester 5 is fixedly arranged on the ground through a steel column 12, the terminal support 11 comprises a connecting steel plate 15, three steel tube columns 13 and four angle steel connecting plates 14, the connecting steel plate 15 is in an equilateral triangle structure, the three steel tube columns 13 are respectively and vertically arranged at three corners of the connecting steel plate 15, the three steel tube columns 13 are fixedly connected through the four angle steel connecting plates 14, the angle steel connecting plates 14 are fixedly welded with the steel tube columns 13, the connecting steel plate 15 is arranged at the tops of the three steel tube columns 13, the terminal support 11 is simple in structure, the three steel tube columns 13 are arranged in a triangular mode, the supporting stability of the terminal is enhanced, and the angle steel connecting plates 14 enable the three steel tube columns 13 to be stably connected; the connecting steel plate 15 and the angle steel connecting plate 14 are both provided with cable avoiding holes 16, the side surfaces of the cable avoiding holes 16 are provided with openings 17, the cable avoiding holes 16 facilitate the ground entering cables to penetrate through the cable terminal 4, and meanwhile, the side openings 17 facilitate the ground entering cables to be put in and taken out; four mounting holes 18 are symmetrically arranged on the connecting steel plate 15, and the mounting holes 18 are used for connecting and fixing the cable terminal 4.
In conclusion, the three-connecting-rod device is simple in structure, convenient to install, small in occupied area, reasonable in layout, large enough in electrical clearance, convenient to operate and maintain, and the cable terminal 4 and the lightning arrester 5 are installed on the ground; and the power supply of double loops is adopted, so that the reliability of power supply is improved.
Claims (8)
1. The three-connecting-rod device for leading overhead lines into the ground is characterized by comprising supporting rods, wherein the supporting rods comprise a first supporting rod (1), a second supporting rod (2) and a third supporting rod (3) which are arranged in a straight line shape, and a plurality of first cross arms (101) are arranged on two sides of the first supporting rod (1); one side of the second supporting rod (2) is provided with a plurality of second cross arms (201), and the other side is provided with a fourth cross arm (202); the bilateral symmetry of third bracing piece (3) is provided with third cross arm (301), subaerial between first bracing piece (1) and second bracing piece (2), between second bracing piece (2) and third bracing piece (3) all is provided with a plurality of cable termination (4), and is a plurality of one side clearance of cable termination (4) is provided with arrester (5), two sets of three-phase overhead line (6) have been hung respectively to the both sides of bracing piece.
2. The three-bar linkage arrangement of the overhead line to ground of claim 1, wherein one set of the three-phase overhead lines (6) is suspended on three first cross arms (101) on one side of the first supporting bar (1), respectively, and the ends thereof are suspended horizontally on a fourth cross arm (202); the other group of three-phase overhead lines (6) are respectively hung on three first cross arms (101) on the other side of the first supporting rod (1) and connected with three second cross arms (201), and the end parts of the three-phase overhead lines (6) are horizontally arranged and hung on third cross arms (301) on two sides of a third supporting rod (3).
3. The three-bar linkage arrangement of the overhead line to the ground according to claim 2, characterized in that the three-phase overhead line (6) on the fourth cross arm (202) and the three-phase overhead line (6) on the third cross arm (301) are each fixedly connected to three cable terminations (4) by three down-leads (7); the lightning arrester (5) is provided with a lead-in wire (8), and the lead-in wire (8) is fixedly connected with a down-lead wire (7) on the corresponding cable terminal (4).
4. The three-bar linkage arrangement of the overhead line to the ground according to claim 2, characterized in that the first (101), second (201), third (301) and fourth (202) cross-arms are all fixedly connected to the three-phase overhead line (6) by means of insulators (9).
5. The overhead line ground access three-bar linkage arrangement of claim 1, wherein a plurality of the first (101), second (201) and third (301) cross arms are vertically and uniformly arranged on corresponding support bars.
6. The three-bar linkage arrangement of an overhead line to ground according to claim 1, characterized in that the upper ends of the first (1), second (2) and third (3) support bars are provided with a grounding cross-arm (10) for suspending a ground wire on both sides.
7. The three-bar linkage arrangement for the overhead line to be routed to the ground according to claim 1, wherein the cable termination (4) is fixedly arranged on the ground by means of a termination bracket (11) and the lightning arrester (5) is fixedly arranged on the ground by means of a steel column (12).
8. The three-bar linkage of overhead line entry ground of claim 7, characterized in that, terminal bracket (11) includes a plurality of steel pipe stand (13), and is a plurality of steel pipe stand (13) and a plurality of angle connection board (14) fixed connection, the top of steel pipe stand (13) is provided with steel connecting plate (15), all be provided with cable dodge hole (16) on steel connecting plate (15) and angle connection board (14), the side of cable dodge hole (16) is provided with opening (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121892156.7U CN215580282U (en) | 2021-08-13 | 2021-08-13 | Three-link device for leading overhead line to ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121892156.7U CN215580282U (en) | 2021-08-13 | 2021-08-13 | Three-link device for leading overhead line to ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215580282U true CN215580282U (en) | 2022-01-18 |
Family
ID=79835377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121892156.7U Active CN215580282U (en) | 2021-08-13 | 2021-08-13 | Three-link device for leading overhead line to ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215580282U (en) |
-
2021
- 2021-08-13 CN CN202121892156.7U patent/CN215580282U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209924551U (en) | Double-loop cable terminal tower | |
| CN114086812B (en) | Double-loop cable terminal tower with switching bearing platform support structure | |
| CN200976471Y (en) | DC dual-polar vertical arrangement F-shaped transmission line series iron tower | |
| CN215580282U (en) | Three-link device for leading overhead line to ground | |
| CN207813168U (en) | Singly cut-off π sections towers in double loop | |
| CN204754412U (en) | Same terminal pole of two telegram in reply cables at present of unilateral cross arm | |
| CN216355887U (en) | Three-phase vertical overhead outgoing line framework structure of transformer substation | |
| CN109779373B (en) | Cable terminal rod for breaking one circuit in double-circuit same-rod parallel-rack transmission line | |
| CN208479112U (en) | A kind of cable for built single time anchor support draws lower special pole | |
| CN206722513U (en) | A kind of overhead transmission line composite punching tangent tower | |
| CN108005458A (en) | Singly cut-off π sections towers in double loop | |
| CN212336874U (en) | Arch cross arm tower type structure of +/-1100 kV direct current line and grounding electrode line on same tower | |
| CN201141223Y (en) | Self-supporting door type power transmission iron tower for DC transmission line | |
| CN209298858U (en) | ± 1100KV DC line anchor support arrester device | |
| CN105610081B (en) | A kind of Chinese character pin-shaped GIS outlets arrangement for being used for 500kV and following voltage class | |
| CN219535583U (en) | 110kV single-circuit flat-bed-free type cable terminal tower | |
| CN221031765U (en) | 220KV double-circuit short type cable terminal rod | |
| CN216436763U (en) | Open-type cable branch station | |
| CN212784214U (en) | GIS equipment three-phase vertical outgoing line structure with external lightning arrester | |
| CN215632061U (en) | Double-return single-pi cable terminal steel pipe pole | |
| CN203312638U (en) | Screw type outgoing line framework arrangement structure of 220 kilovolt outdoor power distribution device | |
| CN216016404U (en) | Double-loop high-voltage direct-current line pole lead and metal return line common-frame angle steel tower | |
| CN115967017B (en) | Compact distribution outgoing line arrangement structure | |
| CN116971658B (en) | Double-return cable terminal pole tower for guiding and connecting multiple cables to upper pole tower and lower pole tower | |
| CN213753459U (en) | Steel pole for vertical outgoing line of transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |