CN204229942U - A kind of light ice formation compact two V-type suspension string - Google Patents

Abstract

The utility model provides a compact two-connected V-shaped hanging string for light ice areas, which includes a hanging connecting plate and two hanging strings distributed in a "V" shape. The hanging string includes a composite insulator string connected by composite insulators. , the two ends of the composite insulator string are respectively connected with the iron tower cross arm and the suspension connecting plate, one of the two hanging string composite insulator strings and the hanging connecting plate are successively provided with connecting plate one and Z-type right-angle hanging plate, and the other two-connected Between the composite insulator string of the suspension string and the suspension connection plate, the second connection plate and the right-angle hanging plate are arranged in sequence. Compared with the prior art, the utility model provides a compact two-connected V-shaped suspension string for light ice areas, which improves the structural strength of the fittings and the overall strength of the suspension string, and ensures the normal operation of the transmission line; at the same time, it effectively shortens the The length of the hanging string is reduced, thereby reducing the height of the transmission tower, and reducing the manufacturing, transportation and construction costs of fittings and towers.

Description

A compact two-connected V-shaped hanging string for light ice areas

technical field

The utility model relates to a hanging string, in particular to a compact two-connected V-shaped hanging string for light ice areas.

Background technique

Straight line towers with iron tower structure are widely used in UHV overhead transmission lines to support the tension section between conductors and ground wires, and are the most widely used tower types in transmission lines. The suspension insulator string is an important part of the straight tower that connects the wire and the iron tower and maintains the electrical insulation between the transmission wire and the iron tower.

In addition to the electrical insulation performance of the transmission wire and the iron tower itself, the suspension insulator string also bears the gravity load from the wire, the horizontal wind load, and its own gravity load. Suspended insulator strings of UHV transmission lines are generally composed of connecting fittings and composite insulators made of composite materials. The specific type is determined after electrical insulation calculation, mechanical calculation and comprehensive comparison of safety and economy.

Suspended insulator strings on transmission lines include vertically installed I strings, obliquely installed V-shaped strings, Y-shaped strings, and multi-string parallel installations. Different installation methods will have different effects on the pollution flashover characteristics of insulators. At present, most of the suspension strings of high-voltage DC lines at home and abroad adopt I string and V string, and the operation is good. The design and use of I string and V string have rich experience.

With the construction of UHV, the voltage level is getting higher and higher, it is necessary to increase the cross section of the wire and the number of split wires, which will inevitably increase the use of wires, the tonnage of the fitting string, the size and tonnage of the fittings, and the iron tower. The structural size and the width of the line corridor, etc., thus increasing the project investment.

For this reason, the applicant designed a compact two-connected V-shaped suspension string. While ensuring the engineering requirements, the structural size and connection form of the fittings in the suspension string were optimized, which not only reduced the manufacturing, transportation and construction costs of the fittings, but also It reduces the investment of the iron tower and has good economic benefits.

Utility model content

In order to solve the above problems, the utility model provides a compact two-connected V-shaped hanging string for light ice areas. It adopts mature processing technology, which greatly improves the structural strength of the fittings and the overall strength of the fittings connected as a hanging string, ensuring At the same time, by optimizing the structure and connection method of the fittings, the length of the hanging string is effectively shortened, thereby reducing the height of the transmission tower, and reducing the manufacturing, transportation and construction costs of fittings and iron towers , has good economic benefits.

The purpose of this utility model is to adopt following technical scheme to realize:

The utility model provides a compact two-connected V-shaped hanging string for light ice areas, which includes a hanging connecting plate 8 and two two-connecting hanging strings distributed in a "V" shape. The hanging string is composed of composite insulators 4 The connected composite insulator strings, the two ends of the composite insulator strings are respectively connected to the iron tower cross arm and the suspension connecting plate 8;

The improvement is that: one of the composite insulator strings of the two suspension strings and the suspension connection plate 8 are sequentially provided with a connection plate one 6 and a Z-shaped right-angle suspension plate 7, and the composite insulator string of the other two suspension strings is Between the insulator string and the hanging connecting plate 8, connecting plate 2 13 and right-angle hanging plate 14 are provided in sequence.

Wherein, the connecting plate one 6 is an isosceles triangular plate structure, and its three top corners are respectively provided with a hole one 601, a hole two 602 and a hole three 603, and the hole two 602 and the hole three 603 of the bottom corner Hole 4 604 is located on the same suspension line as Hole 1 601 at the top corner; Hole 5 605 is provided on the outside of Hole 2 602 and Hole 3 603 respectively.

Wherein, the two ends of the Z-shaped right-angle hanging plate 7 are respectively provided with grooves, and the slotting directions of the grooves are perpendicular to each other, and the two side walls of the grooves are respectively provided with through holes along the same horizontal direction.

Wherein, the connecting plate one 6 is arranged in the groove at one end of the Z-shaped right-angle hanging plate 7, the hole four 604 is connected with the through hole of the groove by a bolt, and the bolt is provided with a closed pin; The connecting plate 8 is set in the groove at the other end of the Z-shaped right-angle hanging plate 7 through bolts.

Wherein, the hanging connecting plate 8 is provided with connecting holes for connecting the hanging wire clamps 9 along the same circumference, and the center of the hanging connecting plate 8 is provided with a weight 11 .

Wherein, a pressure equalizing ring 5 is provided between the composite insulators 4, and the pressure equalizing ring 5 is respectively connected to the connecting plate 1 6 and the connecting plate 2 13 by bolts, and the pressure equalizing ring 5 is connected to the connecting plate 1 6 and the connecting plate 13 respectively. A loosening washer 503 and a washer are respectively provided between the plates 2 13 .

Wherein, a trunnion hanging plate 1 , a ZBD type right-angle hanging plate 2 , a PT adjusting plate 12 and a U-shaped hanging ring 3 are arranged in sequence between the two double-connected composite insulator strings and the cross arm of the iron tower.

Wherein, the trunnion hanging plate 1 is a plate-like structure with a hollow circular shaft horizontally provided at one end, and an opening is horizontally provided at the other end, and the direction of the opening is perpendicular to the axial direction of the hollow circular shaft. A stud bolt 101 is provided, and the two ends of the stud bolt 101 are sequentially provided with a washer, a nut and a dead pin from the inside to the outside.

Wherein, the ZBD type right-angle hanging plate 2 is a plate-like structure with a U-shaped groove at one end, and a round hole at the other end; the opening direction of the round hole is consistent with the slotting direction of the U-shaped groove, The two side walls of the U-shaped groove are provided with through holes perpendicular to the opening direction of the circular hole along the same horizontal direction.

Wherein, the trunnion hanging plate 1 is arranged in the U-shaped groove of the ZBD-type right-angle hanging plate 2 through bolts, and the bolt is provided with a closed pin; the other end of the ZBD-type right-angle hanging plate 2 is connected to the PT adjustment plate 12 is connected.

Wherein, the PT adjustment plate 12 includes a parallel plate 1202 and a single hanging plate 1201 arranged between the parallel plates 1202, the single hanging plate 1201 and the parallel plate 1202 are respectively provided with adjusting screw holes at intervals, the single hanging The plate 1201 and the parallel plate 1202 are connected by bolts; the PT adjustment plate 12 and the composite insulator string are connected by a U-shaped hanging ring 3 .

Wherein, the suspension clamp 9 includes a pressing plate 901 arranged inside it and a UB hanging plate 903 arranged on its top; the pressing plate 901 and the suspension clamp 9 are connected by fastening bolts 902, and the pressing plate 901 and A flat washer 907 and a spring washer 908 are arranged between the fastening bolts 902; the UB hanging plate 903 is connected with the hanging connecting plate (8) through bolts.

Wherein, the power transmission wire is arranged in the cavity formed by the pressing plate 901 and the suspension wire clamp 9; the wire wrapping 10 is provided on the surface of the power transmission wire.

Compared with the closest prior art, the present invention has the following beneficial effects:

1. The compact two-connected V-shaped hanging string for light ice areas provided by the utility model adopts mature processing technology, which greatly improves the structural strength of the fittings and the overall strength after the fittings are connected into a hanging string, ensuring the safety of the transmission line. normal operation.

2. The compact two-connected V-shaped suspension string for light ice area provided by the utility model effectively shortens the length of the suspension string by optimizing the structure of the fittings and its connection mode, thereby reducing the height of the transmission tower and reducing the It reduces the manufacturing, transportation and construction costs of hardware and iron towers, and has good economic benefits.

3. The utility model provides a compact two-connected V-shaped hanging string for light ice areas, which adopts a new structure of connecting plate 1, optimizes the structure of the hanging string, and reduces the weight and length of the hanging string.

4. The compact two-connected V-shaped hanging string for light ice areas provided by the utility model improves a strength level of the right-angle hanging board located at the weak point of the hanging string on the left side (that is, it is higher than the Z-shaped right-angle hanging board at the same position on the right side). One strength level of the slab), during construction, the left hanging string is placed outside the tower body of the transmission tower. When the hanging string breaks, the strength level of the right-angle hanging slab is higher than that of the Z-shaped right-angle slab. The hanging string on the right is broken first to ensure that the broken string will not cause secondary damage due to hitting the iron tower.

Description of drawings

Figure 1: Schematic diagram of the structure of the compact two-connected V-shaped suspension string for light ice areas provided by the utility model;

Fig. 2: a structural schematic diagram of one of the two hanging strings provided by the utility model;

Figure 3: Structural schematic diagram of another two-link hanging string provided by the utility model

Figure 4: Structural schematic diagram of the suspension wire clamp provided by the utility model to suspend the transmission wire;

Fig. 5: a front view structural schematic diagram of the trunnion hanging plate provided by the utility model;

Figure 6: A schematic diagram of the side view structure of the trunnion hanging plate provided by the utility model;

Fig. 7: The schematic diagram of the front view structure of the ZBD type right-angle hanging board provided by the utility model;

Figure 8: A schematic diagram of the side view structure of the ZBD type right-angle hanging board provided by the utility model;

Fig. 9: a front view structural schematic diagram of the U-shaped hanging ring provided by the utility model;

Figure 10: a schematic diagram of the side view structure of the U-shaped hanging ring provided by the utility model;

Figure 11: A schematic diagram of the front view structure of the pressure equalizing ring provided by the utility model;

Figure 12: A schematic diagram of the side view structure of the pressure equalizing ring provided by the utility model;

Figure 13: a schematic diagram of the front view of the connecting plate 1 provided by the utility model;

Figure 14: a schematic diagram of the front view structure of the Z-shaped right-angle hanging board provided by the utility model;

Figure 15: A schematic diagram of the side view structure of the Z-shaped right-angle hanging plate provided by the utility model;

Figure 16: a schematic diagram of the front view structure of the suspension connecting plate provided by the utility model;

Figure 17: A schematic diagram of the front view structure of the suspension clamp provided by the utility model;

Figure 18: A schematic diagram of the side view structure of the suspension clamp provided by the utility model;

Figure 19: Schematic diagram of the structure of the wire wrap provided by the utility model;

Figure 20: a schematic diagram of the front structure of the hammer provided by the utility model;

Figure 21: A schematic diagram of the side view structure of the hammer provided by the utility model;

Figure 22: A schematic diagram of the front view structure of the PT adjustment plate provided by the utility model;

Figure 23: A schematic diagram of the side view structure of the PT adjustment plate provided by the utility model;

Figure 24: Schematic diagram of the front view structure of the PT adjustment plate provided by the utility model after the length is adjusted;

Figure 25: A schematic diagram of the side view structure of the PT adjustment plate provided by the utility model after the length is adjusted;

Among them: 1. Trunnion hanging plate; 2. ZBD type right-angle hanging plate; 3. U-shaped hanging ring; 4. Composite insulator; , hanging connecting plate; 9, hanging clamp; 10, wire wrapping; 11, heavy hammer; 12, PT adjustment plate; 13, connecting plate two; Washer; 103, nut; 104, closed pin; 201, bolt; 202, nut; 203, closed pin; 301, bolt; 302, nut; 303, closed pin; 501, bolt; 502, nut; 503, loosening washer; 504, washer; 601, hole one; 602, hole two; 603, hole three; 604, hole four; 605, hole five; 701, bolt; 702, nut; 703, closed pin; 901, pressure plate; 902, fastening Bolt; 903, UB hanging plate; 904, bolt; 905, nut; 906, closed pin; 907, flat washer; 908, spring washer; 909, bolt; 1201, single hanging plate; 1202, parallel plate; 1203, bolt; 1204, nut; 1205, closed pin.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and understandable, the specific implementation of the utility model will be further described in detail below in conjunction with the accompanying drawings.

The compact two-connected V-shaped suspension string for light ice areas provided in this embodiment, as shown in Figures 1 to 25, includes: trunnion hanging plate 1, ZBD-type right-angle hanging plate 2, U-shaped hanging ring 3, and composite insulator 4 , pressure equalizing ring 5, connecting plate 1 6, Z-type right-angle hanging plate 7, hanging connecting plate 8, hanging wire clip 9, wire wrapping 10, weight plate 11, PT adjusting plate 12, connecting plate 2 13, right angle Hanging board 14. The two two-connected suspension strings distributed in a "V" shape are respectively connected to the iron tower cross arm and the suspension connecting plate 8. The suspension strings include composite insulator strings connected in series by composite insulators 4, and the composite The insulator string and the iron tower cross arm are connected in sequence with the trunnion hanging plate 1, the ZBD type right-angle hanging plate 2, the PT adjustment plate 12 and the U-shaped hanging ring 3; one of the composite insulator strings with two hanging strings and the hanging connecting plate 8 The first connecting plate 6 and the Z-type right-angle hanging plate 7 are arranged in sequence, and the second connecting plate 13 and the right-angle hanging plate 14 are arranged between the composite insulator string of another two-connected suspension string and the hanging connecting plate 8 in sequence.

Wherein, as shown in Figures 5 to 6, the trunnion hanging plate 1 is a plate-shaped structure with a hollow circular shaft horizontally provided at one end, and an opening is horizontally provided at the other end, and the direction of the opening is perpendicular to the axial direction of the hollow circular shaft. A stud bolt 101 is arranged in the hollow circular shaft, and a washer 102 is arranged at both ends of the stud bolt 101 and is tightened by a nut 103 .

Among them, as shown in Figures 7 to 8, the ZBD type right-angle hanging plate 2 is a plate structure with a U-shaped groove at one end, and a round hole at the other end; the opening direction of the round hole is consistent with the opening direction of the U-shaped groove. The direction of the groove is consistent, and the two side walls of the U-shaped groove are provided with through holes perpendicular to the direction of the opening of the round hole along the same horizontal line. The trunnion hanging plate 1 is arranged in the U-shaped groove of the ZBD type right-angle hanging plate 2 through bolts 201. The bolts 201 are fastened with nuts 202, and the ends of the bolts 201 are provided with closed pins 203 to prevent the nuts 202 from falling off.

Wherein, as shown in Figures 9 to 10, the U-shaped hanging ring 3 and the PT adjustment plate 12 are connected by bolts 301, and the bolts 301 are fastened by nuts 302, and the ends of the bolts 301 are provided with closed pins 303 to prevent the nuts 302 from falling off; The other end of the hanging ring 3 is connected in series with composite insulators.

Among them, as shown in Figures 11 to 12, the voltage equalizing ring 5 is located between the composite insulators, and the voltage equalizing ring 5 set in one of the two-connected composite insulator strings is connected to the hole five 605 of the connecting plate one 6 through the bolt 501, and the bolt 501 is tightened by nuts 502 after loosening the washers 503 and 504; the equalizing ring 5 set in another two-connected composite insulator string is connected with the connecting plate 2 13 by bolts.

Among them, as shown in Figure 13, the connecting plate 1 6 is an isosceles triangular plate-shaped structure, and its three top corners are respectively provided with a hole 1 601, a hole 2 602 and a hole 3 603, and holes 2 602 and 3 at the bottom corner Between 603 there is hole 4 604 located on the same suspension line as hole 1 601 at the top corner; on the outside of hole 2 602 and hole 3 603 are respectively provided holes 5 605 connected with pressure equalizing ring 5 . The hanging strings are connected to the second hole 602 and the third hole 603 respectively.

Among them, as shown in Figures 14 to 15, the two ends of the Z-shaped right-angle hanging plate 7 are respectively provided with grooves, the grooves are perpendicular to each other, and the two side walls of the groove are respectively provided with through holes along the same horizontal direction. Hanging plate 7 one ends are connected with hole 4 604 by bolt 701, and the closed pin 703 that prevents nut 702 from falling off is installed after bolt 701 tightens with nut 702;

Wherein, as shown in Figure 16, the suspension connecting plate 8 is provided with the line clamp connecting holes distributed along the same circumference that are connected with the suspension clamp 9 for suspending the power transmission conductor, and the center of the suspension connecting plate 8 is provided with a hole for controlling the suspension string. The heavy hammer plate 11 of swing angle.

Wherein, as shown in Figures 17 to 18, the suspension clamp 9 includes a pressure plate 901 located inside it and a UB hanging plate 903 located on its top; a power conductor is placed between the pressure plate 901 and the suspension clamp 9 and fixed by fastening bolts 902 After installing flat washers 907 and spring washers 908 on the fastening bolts 902, fasten them with nuts 905; the UB hanging plate 903 is connected with the suspension connecting plate 8 through bolts 904, and after the bolts 904 are fastened with nuts 905, install them to prevent the nuts 905 from falling off Shutter pin 906.

Wherein, as shown in FIG. 19 , the wire wrapping 10 is wrapped on the surface of the power transmission wire to prevent the power transmission wire from being damaged due to excessive external pressure.

Wherein, as shown in Figures 22 to 25, the PT adjustment plate 12 includes a parallel plate 1202 and a single hanging plate 1201 arranged between the parallel plates 1202, and the single hanging plate 1201 and the parallel plate 1202 are both provided with adjustment screw holes at intervals. In the actual situation, the adjustment of the length of the PT adjustment plate 12 is realized by adjusting the relative position of the single hanging plate 1201 and the parallel plate 1202. The single hanging plate 1201 and the parallel plate 1202 are connected by bolts 1203. The end of 1203 is provided with a closed pin 1205 to prevent the nut 1204 from falling off.

Example 1

As shown in Figure 1, there are two left and right hanging strings distributed in the shape of a "V". Connect by connecting plate one 6 and Z type right-angle hanging plate 7 between string and hanging connecting plate 8. Connecting plate 16 adopts the structure shown in Figure 13, which optimizes the hanging string structure, reduces the weight and string length of the hanging string; at the same time, the strength level of the selected right-angle hanging plate 14 is higher than that of the Z-shaped right-angle hanging plate 7. During construction, place the left hanging string outside the tower body of the power transmission tower. When the hanging string breaks, because the strength grade of the right-angle hanging plate 14 is higher than that of the Z-shaped right-angle hanging plate 7, the right hanging string Break first to ensure that the broken string will not cause secondary damage due to hitting the iron tower.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Those of ordinary skill in the art should understand that the specific implementation of the present utility model can be modified or equivalent with reference to the above examples. Replacement, any modification or equivalent replacement that does not depart from the spirit and scope of the present utility model is within the protection scope of the pending claims.

Claims (13)

1. A compact two-connected V-shaped suspension string for light ice areas, comprising a suspension connecting plate (8) and two two-connected suspension strings distributed in a "V" shape, said suspension string comprising composite insulators (4 ) connected composite insulator strings, the two ends of the composite insulator strings are respectively connected with the iron tower cross arm and the suspension connecting plate (8); It is characterized in that: one of the composite insulator strings of the two-connected suspension strings and the suspended connecting plate (8) is provided with connecting plate one (6) and a Z-shaped right-angled hanging plate (7) in sequence, and the other two-connected A second connecting plate (13) and a right-angle hanging plate (14) are sequentially provided between the composite insulator string of the hanging string and the hanging connecting plate (8). 2. The compact two-connected V-shaped suspension string for light ice areas as claimed in claim 1, wherein said connecting plate one (6) is an isosceles triangular plate structure, and its three corners are respectively provided with Hole 1 (601), hole 2 (602) and hole 3 (603), between the hole 2 (602) and hole 3 (603) of the bottom corner is provided with the hole 1 (601) of the top corner in the same hanging Hole 4 (604) of the line; Hole 5 (605) is provided on the outside of the hole 2 (602) and hole 3 (603). 3. The compact two-connected V-shaped hanging string for light ice areas as claimed in claim 2, characterized in that grooves are respectively arranged at both ends of the Z-shaped right-angle hanging plate (7), and the grooves of the grooves are The directions are perpendicular to each other, and the two side walls of the groove are respectively provided with through holes along the same horizontal direction. 4. The compact two-connected V-shaped hanging string for light ice areas as claimed in claim 3, characterized in that, the first connecting plate (6) is arranged in the groove at one end of the Z-shaped right-angle hanging plate (7) Among them, the hole four (604) is connected with the through hole of the groove by a bolt, and the bolt is provided with a closed pin; in the groove at one end. 5. The compact two-connected V-shaped suspension string for light ice area as claimed in claim 4, characterized in that, the suspension joint plate (8) is provided with the suspension wire clamp (9) connected to the same circumference distribution The connecting hole of the wire clamp, the center of the hanging connecting plate (8) is provided with a weight piece (11). 6. The compact two-connected V-shaped suspension string for light ice areas as claimed in claim 4, characterized in that, a voltage equalizing ring (5) is provided between the composite insulators (4), and the voltage equalizing ring ( 5) Connect the connecting plate 1 (6) and connecting plate 2 (13) respectively by bolts, and the pressure equalizing ring (5) and connecting plate 1 (6) and connecting plate 2 (13) are respectively provided with loose washers (503) and gasket. 7. the light ice area as claimed in claim 1 is characterized in that, between two said two-connected composite insulator strings and the iron tower cross-arm, trunnion hanging plates ( 1), ZBD type right-angle hanging plate (2), PT adjusting plate (12) and U-shaped hanging ring (3). 8. The compact two-connected V-shaped hanging string for light ice areas as claimed in claim 7, characterized in that, the trunnion hanging plate (1) is a plate-shaped structure with a hollow circular shaft horizontally provided at one end, and Holes are arranged horizontally, and the direction of the holes is perpendicular to the axial direction of the hollow circular shaft. Stud bolts (101) are arranged in the hollow circular shaft, and the two ends of the stud bolts (101) are sequentially arranged from the inside to the outside. There are washers, nuts and blind pins. 9. The compact two-connected V-shaped hanging string for light ice area as claimed in claim 8, characterized in that, the ZBD type right-angle hanging plate (2) is a plate structure with a U-shaped groove at one end, and another One end is horizontally provided with a round hole; the opening direction of the round hole is consistent with the slotting direction of the U-shaped groove, and the two side walls of the U-shaped groove are arranged along the same horizontal line and perpendicular to the opening direction of the round hole. through holes. 10. The compact two-connected V-shaped hanging string for light ice areas as claimed in claim 9, characterized in that, the trunnion hanging plate (1) is set on the bottom of the ZBD type right-angle hanging plate (2) by bolts. In the U-shaped groove, the bolt is provided with a closed pin; the other end of the ZBD-type right-angle hanging plate (2) is connected with the PT adjustment plate (12) through bolts. 11. The compact two-connected V-shaped suspension string for light ice areas according to claim 10, characterized in that, the PT adjustment plate (12) comprises a parallel plate (1202) and is arranged on the parallel plate (1202) Between the single hanging plate (1201), the single hanging plate (1201) and the parallel plate (1202) are respectively provided with adjusting screw holes at intervals, and the single hanging plate (1201) and the parallel plate (1202) are connected by bolts Connection; the PT adjustment plate (12) is connected with the composite insulator string through a U-shaped hanging ring (3). 12. The compact two-connected V-shaped suspension string for light ice area according to claim 5, characterized in that, the suspension clamp (9) includes a pressure plate (901) arranged inside it and a pressure plate (901) arranged on its top UB hanging plate (903); the pressure plate (901) and the suspension clamp (9) are connected by fastening bolts (902), and a flat washer is arranged between the pressure plate (901) and the fastening bolts (902) (907) and spring washers (908); the UB hanging plate (903) is connected with the hanging connecting plate (8) by bolts. 13. The compact two-connected V-shaped suspension string for light ice area as claimed in claim 12, characterized in that, the power transmission wire is arranged in the cavity formed by the pressure plate (901) and the suspension wire clamp (9); A wire wrap (10) is provided on the surface of the power transmission wire.