CN220585956U - Arrester mounting structure suitable for extra-high voltage direct current transmission line - Google Patents
Arrester mounting structure suitable for extra-high voltage direct current transmission line Download PDFInfo
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- CN220585956U CN220585956U CN202322136711.9U CN202322136711U CN220585956U CN 220585956 U CN220585956 U CN 220585956U CN 202322136711 U CN202322136711 U CN 202322136711U CN 220585956 U CN220585956 U CN 220585956U
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- lightning arrester
- arrester
- electrode assembly
- extra
- high voltage
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 13
- 239000012212 insulator Substances 0.000 claims abstract description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000009434 installation Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model provides a lightning arrester installation structure suitable for an extra-high voltage direct current transmission line, which comprises an insulator hardware string installed at the bottom of an iron tower top frame, a support cross arm installed on an iron tower body and a plurality of groups of composite insulators. The insulator hardware string is connected with a suspension yoke plate, and the suspension yoke plate is connected with the lower motor assembly through a first length-adjustable metal member. The support cross arm is provided with a support frame, the top of the support frame is provided with a base, the top of the base is vertically provided with a lightning arrester, and the upper electrode assembly is arranged at the top of the lightning arrester through a second length-adjustable metal member. One end of the composite insulator is connected with the lightning arrester, and the other end of the composite insulator is fixed on the support frame through the turnbuckle. Through multiunit composite insulator and turnbuckle combination pulling force subassembly, with the arrester taut fix on supporting the cross arm, effectively reduce arrester vibration amplitude, can avoid the not hard up that the arrester base is connected simultaneously, prevent the emergence of arrester accident that drops.
Description
Technical Field
The utility model relates to the technical field of lightning arresters, in particular to a lightning arrester installation structure suitable for an extra-high voltage direct current transmission line.
Background
The lightning protection operation experience of the extra-high voltage direct current line shows that the addition of the line arrester on the extra-high voltage line can obviously improve the lightning resistance level of the line, and is the only current measure capable of realizing full-span lightning protection.
The existing arrester installation structure of the +/-800 kV extra-high voltage direct current transmission line mainly adopts a V-shaped installation structure (see figure 12), the arrester is connected to an iron tower bracket in a diagonal manner through a composite insulator string, a lower electrode assembly is connected with a wire through a line fitting, and an upper electrode assembly is connected to a pole tower through the line fitting and the composite insulator string. The distance between the lightning discharge gaps of the upper electrode assembly and the lower electrode assembly is not adjustable, so that the value of the distance between the lightning discharge gaps is not convenient to control in the allowable range of the lightning arrester when the lightning arrester is installed on site. The cable-stayed composite insulator string is overlong, excessively large in deflection and easy to shake under the action of wind load, so that the discharge dispersibility is large, and the lightning discharge gap distance cannot be ensured. The composite insulator is easy to be brittle and broken under the action of bending moment for a long time, so that the lightning arrester falls down and accidents occur.
Disclosure of Invention
The utility model aims to provide a lightning arrester installation structure suitable for an extra-high voltage direct current transmission line, wherein a lightning arrester is tensioned and fixed on a support frame through a plurality of groups of combined insulators and turnbuckle combined tension assemblies, so that the vibration amplitude of the lightning arrester is effectively reduced, meanwhile, the looseness of the connection of a base of the lightning arrester can be avoided, and the falling accident of the lightning arrester can be prevented. In order to achieve the technical characteristics, the aim of the utility model is realized in the following way:
a lightning arrester installation structure suitable for an extra-high voltage direct current transmission line comprises an insulator hardware string installed at the bottom of an iron tower top frame, a supporting cross arm installed on an iron tower body and a plurality of groups of composite insulators; the insulator hardware string is connected with the suspension yoke plate, and the suspension yoke plate is connected with the lower motor assembly through a first length-adjustable metal member; the support cross arm is provided with a support frame, the top of the support frame is provided with a base, the top of the base is vertically provided with a lightning arrester, and the upper electrode assembly is arranged at the top of the lightning arrester through a second length-adjustable metal member; the upper electrode assembly is arranged right below the lower electrode assembly, a preset distance is kept between the upper electrode assembly and the lower electrode assembly, one end of the composite insulator is connected with the lightning arrester, the other end of the composite insulator is fixed on the supporting frame through a turnbuckle, and the single insulator and the lightning arrester are distributed in an included angle.
The turnbuckle is characterized in that a through hole is formed in a threaded section of the adjusting rod of the turnbuckle, and two clamping plates are respectively fixed on two sides of the adjusting rod through locking bolts sleeved in the through hole.
The locking bolt is characterized in that a pin hole is formed in a threaded section of the locking bolt, and an R pin is arranged in the pin hole.
The first length-adjustable metal component and the second length-adjustable metal component comprise a first channel steel and a second channel steel, a plurality of mounting holes are formed in the first channel steel and the second channel steel, and the first channel steel and the second channel steel are connected through connecting bolts sleeved in the mounting holes.
The utility model has the following beneficial effects:
1. the multi-combination insulator and turnbuckle combined tension assembly tightens and fixes the arrester on the support frame, reduces the vibration amplitude of the arrester, can effectively avoid the looseness of the connecting bolt of the arrester base, and prevents the occurrence of the accident that the arrester falls.
2. The lengths of the first length-adjustable metal component and the second length-adjustable metal component are adjusted, so that insulator hardware strings with different lengths can be applied.
3. After the turnbuckle is tensioned, the turnbuckle adjusting rod is clamped by the clamping plate, and the lockbolt is loose by the aid of the R pin, so that the turnbuckle can be effectively prevented from loosening due to breeze vibration.
Drawings
The utility model is further described below with reference to the drawings and examples.
Fig. 1 is a schematic diagram of an arrester installation structure suitable for an extra-high voltage direct current transmission line according to an embodiment of the present utility model.
Fig. 2 is an enlarged view of part M of fig. 1 according to an embodiment of the present utility model.
Fig. 3 is an enlarged view of part of N in fig. 1 according to an embodiment of the present utility model.
Fig. 4 is a schematic view of a hanging yoke plate structure according to an embodiment of the present utility model.
Fig. 5 is a schematic structural diagram of an insulator hardware string according to an embodiment of the present utility model.
Fig. 6 is an enlarged view of a portion Q of fig. 5 according to an embodiment of the present utility model.
Fig. 7 is a schematic view of a structure of an adjusting lever according to an embodiment of the present utility model.
Fig. 8 is a schematic view of a turnbuckle structure according to an embodiment of the present utility model.
Fig. 9 is a side view of a turnbuckle according to an embodiment of the present utility model.
Fig. 10 is a schematic structural view of a first length-adjustable metal member and a second length-adjustable metal member according to an embodiment of the present utility model.
Fig. 11 is a schematic diagram of a connection structure of a first channel steel and a second channel steel according to an embodiment of the present utility model.
Fig. 12 is a schematic view of a mounting structure of a lightning arrester in the prior art.
In the figure: insulator hardware string 1, support cross arm 2, overhang yoke plate 3, first length adjustable metal component 4, lower electrode assembly 5, base 6, arrester 7, second length adjustable metal component 8, upper electrode assembly 9, composite insulator 10, turnbuckle 11, iron tower 100, adjusting rod 111, through hole 112, clamp plate 113, lockbolt 114, R pin 115, support frame 201, first channel 481, second channel 482, mounting hole 483, and connecting bolt 484.
Detailed Description
Embodiments of the present utility model will be further described with reference to the accompanying drawings.
Referring to fig. 1-6, an arrester installation structure suitable for an extra-high voltage direct current transmission line comprises an insulator hardware string 1 installed at the bottom of a top frame of an iron tower 100, a support cross arm 2 installed at the tower body of the iron tower 100 and a plurality of groups of composite insulators 10. The insulator hardware string 1 is connected with a suspension yoke plate 3, and the suspension yoke plate 3 is connected with a lower motor assembly 5 through a first length-adjustable metal member 4. The support cross arm 2 is provided with a support frame 201, the top of the support frame 201 is provided with a base 6, a lightning arrester 7 is vertically arranged at the top of the base 6, an upper electrode assembly 9 is arranged at the top of the lightning arrester 7 through a second length-adjustable metal member 8, and the upper electrode assembly 9 is positioned right below the lower electrode assembly 5 and keeps a preset distance between the upper electrode assembly and the lower electrode assembly. One end of the composite insulator 10 is connected with the lightning arrester 7, and the other end is fixed on the supporting frame 201 through the turnbuckle 11. The insulators 10 are distributed at an angle to the lightning arrester 7. Through multiunit composite insulator 10 and turnbuckle 11 combination pulling force subassembly, with the taut fixing of arrester 7 on support frame 201, effectively reduce arrester 7 vibration amplitude, can avoid the not hard up that arrester 7 base is connected simultaneously, prevent the emergence of arrester 7 accident that drops.
Further, the lightning arrester 7 is fastened and fixed on the supporting cross arm 2 in a horizontal projection mode at an included angle of 120 degrees by the aid of the tension assembly comprising three groups of the composite insulators 10 and the combined tension assembly of the composite insulators 10 and the turnbuckle 11, and therefore the connecting structure is more stable and reliable.
Further, referring to fig. 7-9, the threaded section of the adjusting rod 111 of the turnbuckle 11 is provided with a through hole 112, and two clamping plates 113 are respectively fixed on two sides of the adjusting rod 111 through locking bolts 114 sleeved in the through hole 112, so that the turnbuckle 11 can be effectively prevented from loosening due to breeze vibration.
The threaded section of the lockbolt 114 is provided with a pin hole in which an R pin 115 is installed.
Further, referring to fig. 10 and 11, the first length-adjustable metal member 4 and the second length-adjustable metal member 8 each include a first channel steel 481 and a second channel steel 482, a plurality of mounting holes 483 are formed in the first channel steel 481 and the second channel steel 482, and the first channel steel 481 and the second channel steel 482 are connected by connecting bolts 484 sleeved in the mounting holes 483.
Claims (4)
1. A lightning arrester mounting structure suitable for extra-high voltage direct current transmission line, its characterized in that: the insulator hardware fitting string comprises an insulator hardware fitting string (1) arranged at the bottom of a top frame of an iron tower (100), a supporting cross arm (2) arranged on a tower body of the iron tower (100) and a plurality of groups of composite insulators (10);
the insulator hardware string (1) is connected with the suspension yoke plate (3), and the suspension yoke plate (3) is connected with the lower electrode assembly (5) through a first length-adjustable metal member (4);
the support cross arm (2) is provided with a support frame (201), the top of the support frame (201) is provided with a base (6), the top of the base (6) is vertically provided with a lightning arrester (7), and the upper electrode assembly (9) is arranged on the top of the lightning arrester (7) through a second length-adjustable metal member (8);
the upper electrode assembly (9) is positioned right below the lower electrode assembly (5) and keeps a preset distance between the upper electrode assembly and the lower electrode assembly;
one end of the composite insulator (10) is connected with the lightning arrester (7), the other end of the composite insulator (10) is fixed on the supporting frame (201) through the turnbuckle (11), and the single insulators (10) and the lightning arrester (7) form an included angle to be distributed.
2. The lightning arrester mounting structure suitable for an extra-high voltage direct current transmission line according to claim 1, wherein: the screw thread section of the adjusting rod (111) of the turnbuckle (11) is provided with a through hole (112), and the two clamping plates (113) are respectively fixed on the two sides of the adjusting rod (111) through check bolts (114) sleeved in the through hole (112).
3. The lightning arrester mounting structure suitable for an extra-high voltage direct current transmission line according to claim 2, wherein: the thread section of the lockbolt (114) is provided with a pin hole, and an R pin (115) is arranged in the pin hole.
4. The lightning arrester mounting structure suitable for an extra-high voltage direct current transmission line according to claim 1, wherein: the first length adjustable metal component (4) the adjustable metal component of second length (8) all include first channel-section steel (481) and second channel-section steel (482), first channel-section steel (481) all be equipped with a plurality of mounting holes (483) on second channel-section steel (482), first channel-section steel (481) second channel-section steel (482) are passed through connecting bolt (484) that the interior cover of mounting hole (483) established link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322136711.9U CN220585956U (en) | 2023-08-09 | 2023-08-09 | Arrester mounting structure suitable for extra-high voltage direct current transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322136711.9U CN220585956U (en) | 2023-08-09 | 2023-08-09 | Arrester mounting structure suitable for extra-high voltage direct current transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220585956U true CN220585956U (en) | 2024-03-12 |
Family
ID=90109106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322136711.9U Active CN220585956U (en) | 2023-08-09 | 2023-08-09 | Arrester mounting structure suitable for extra-high voltage direct current transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220585956U (en) |
-
2023
- 2023-08-09 CN CN202322136711.9U patent/CN220585956U/en active Active
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| GR01 | Patent grant |