CN213717567U - Door-shaped frame of strain insulator-string, shaft tower and transformer substation - Google Patents

Abstract

The application discloses a tension string, a pole tower and a door-shaped frame of a transformer substation, wherein the tension string comprises a pole tower connecting assembly, a hardware string connecting assembly and a wire connecting assembly; the hardware string connecting assembly comprises a functional connecting plate, the first end of the functional connecting plate is connected with the tower connecting assembly, the second end of the functional connecting plate is provided with a first wire connecting part and two second wire connecting parts, and the two second wire connecting parts are positioned on two sides of the first wire connecting part; the wire connecting assembly has one end for connecting a wire and the other end connected to one of the first wire connecting portion and the two second wire connecting portions. The utility model discloses a tension string, shaft tower and transformer substation's door type frame can realize the conventional connection of wire and the free switching of single become two connections, has great flexibility.

Description

Door-shaped frame of strain insulator-string, shaft tower and transformer substation

Technical Field

The application relates to the technical field of power transmission lines, in particular to a tension string, a pole tower and a door-shaped frame of a transformer substation.

Background

Power transmission is an important component of the overall function of a power system. Generally, after the electric energy generated by a generator is boosted by a transformer, the boosted electric energy is connected to a power transmission line through a control device such as a circuit breaker to realize power transmission. Overhead transmission lines are the main route for the transmission of electrical energy. The overhead transmission line is erected on the ground and comprises a line tower, a lead, an insulator, a line hardware fitting, a tower foundation, a grounding device and the like.

A terminal tower is a tower that is placed at the beginning or end of a transmission line, usually in front of a distribution device gantry of a substation. When the overhead ground wires on the double-loop terminal tower are led into the portal frames of the transformer substation, two adjacent portal frames of the transformer substation may have two or three ground wire columns, and when the number of the two ground wire columns is two, each ground wire cross arm of the terminal tower needs to be led out by one ground wire; when the number of the ground wire poles is three, each ground wire cross arm of the terminal tower needs to be provided with two outgoing wires.

However, in the related art, it is difficult to realize free switching between the conventional connection and the single-to-double connection of the overhead ground wire, which brings great inconvenience to the construction of the power transmission line.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a tension string, shaft tower and door type frame of transformer substation, can realize the free switching of conventional connection and single-to-double connection of wire, has great flexibility.

The following technical scheme is specifically adopted in the application:

one aspect of the application provides a tension string, which comprises a tower connecting assembly, a hardware string connecting assembly and a wire connecting assembly;

the hardware string connecting assembly comprises a functional connecting plate, the first end of the functional connecting plate is connected with the tower connecting assembly, the second end of the functional connecting plate is provided with a first wire connecting part and two second wire connecting parts, and the two second wire connecting parts are positioned on two sides of the first wire connecting part;

the wire connecting assembly is used for connecting a wire at one end and is connected to one of the first wire connecting part and the two second wire connecting parts at the other end.

Preferably, the first wire connecting portion is located at the center of the second end of the functional yoke plate, and the two second wire connecting portions are symmetrically distributed about the first wire connecting portion at the second end of the functional yoke plate.

Preferably, the functional link plate is an axisymmetrical structure, and the number of sides of the axisymmetrical structure is greater than or equal to four.

Preferably, the first end of the function yoke plate is provided with a fitting string connecting part corresponding to the first wire connecting part, and the tower connecting assembly is connected to the fitting string connecting part.

Preferably, the hardware string connecting assembly further comprises two insulator mounting assemblies and a triangular connecting plate, and two bottom corners of the triangular connecting plate are respectively connected with one ends of the two insulator mounting assemblies;

when the hardware fitting string connecting assembly further comprises two insulator mounting assemblies, the top corner of the triangular connecting plate is connected with the tower connecting assembly, the first end of the functional connecting plate is provided with two insulator string connecting parts, the two insulator string connecting parts correspond to the two second wire connecting parts respectively, and the other ends of the insulator mounting assemblies are connected with the two insulator string connecting parts respectively.

Preferably, the insulator installation closes the piece and includes first link fitting, insulator string and second link fitting, the one end of first link fitting with a base angle portion of triangle yoke plate is connected, the other end with the insulator string is connected, keeping away from of insulator string the one end of first link fitting with second link fitting is connected, keeping away from of second link fitting the one end of insulator string with insulator string connecting portion connects.

Preferably, the first wire connecting part, the second wire connecting part, the hardware string connecting part and the insulator string connecting part are through holes.

Preferably, the second end of the function yoke plate is further provided with at least one third wire connecting part group, the third wire connecting part group comprises two third wire connecting parts which are symmetrically distributed at the second end of the function yoke plate, the third wire connecting parts are through holes, and the third wire connecting parts are used for being matched with the first wire connecting parts and the second wire connecting parts when the wire connecting assembly is more than three, so that the wire connecting assembly is arranged at the second end of the function yoke plate and symmetrically distributed.

Preferably, the first end of the function yoke plate is further provided with at least one insulator string connecting part group corresponding to the third wire connecting part group, and the insulator string connecting part group is used for matching with the hardware fitting string connecting part and the two insulator string connecting parts when the insulator mounting assembly is more than two, so that the insulator mounting assembly is in the first end of the function yoke plate and is symmetrically distributed.

Preferably, the tower connecting assembly comprises a third connecting hardware fitting, an extension hardware fitting and a fourth connecting hardware fitting,

one end of the fourth connecting fitting is connected with the tower sequentially through the extension fitting and the third connecting fitting, and the other end of the fourth connecting fitting is connected with the fitting string connecting part of the functional yoke plate or connected with the top corner part of the triangular yoke plate.

Preferably, the wire connection assembly comprises a fifth connection hardware fitting and a strain clamp, one end of the fifth connection hardware fitting is connected with the first wire connection portion or the second wire connection portion, the other end of the fifth connection hardware fitting is connected with the strain clamp, and the other end of the strain clamp is connected with the wire.

Another aspect of this application provides a shaft tower, the cross arm end of shaft tower is provided with the string point of above-mentioned strain insulator-string, the strain insulator-string articulate in hang the point.

Still another aspect of the application provides a door frame of transformer substation, be provided with the ground wire post on the door frame, above-mentioned strain insulator-string articulate in the ground wire post.

The beneficial effects of the embodiment of the application at least lie in:

the tension string provided by the embodiment of the application is provided with the functional yoke plate, and the functional yoke plate is provided with the first lead connecting part and the two second lead connecting parts, so that the tension string can meet the connection requirements of different numbers of leads; when two wires need to be connected, two wire connecting components are required to be connected with two second wire connecting parts positioned on two sides of the functional yoke plate, so that the free switching of the conventional connection and single-to-double connection of the wires through the functional yoke plate is realized, the flexibility is good, and great convenience is brought to the construction and operation maintenance of the power transmission line.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a tension string provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a ground cross arm outgoing line of a double-loop terminal tower provided by the present application;

fig. 3 is a schematic ground cross arm outgoing line diagram of a dual-loop branch tower according to an embodiment of the present application.

The reference numerals denote:

100. strain insulator-string;

110. a pole tower connecting assembly; 1101. a third link fitting; 1102. prolonging the hardware fitting; 1103. a fourth link fitting;

120. a hardware string connecting component; 121. a functional yoke plate; 1211. a first wire connecting portion; 1212. a second wire connecting portion; 1213. a hardware string connecting part; 1214. an insulator string connecting portion; 122. an insulator mounting assembly; 1221. a first connecting hardware fitting; 1222. an insulator string; 1223. a second link fitting; 123. a triangular yoke plate;

130. a wire connection assembly; 1301. a fifth link fitting; 1302. strain clamp;

200. a pole tower;

300. a wire;

400. a gantry frame; 401. and a ground wire column.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.

The embodiment of the application provides a tension string 100, and the tension string 100 can be arranged on a tower 200 or a portal frame 400 of a transformer substation and used for connecting a lead 300 to the tower 200 or the portal frame 400, wherein the lead can be a high-voltage transmission line or an overhead ground wire. The tension string 100 is connected to the power transmission line of the tower 200, and those skilled in the art can easily deduce the situation when the tension string 100 is connected to the gantry 400.

As shown in fig. 1, the tension string 100 includes a tower connection assembly 110, a hardware string connection assembly 120, and a wire connection assembly 130.

The hardware string connecting assembly 120 includes a function link plate 121, a first end of the function link plate 121 is connected to the tower connecting assembly 110, a second end of the function link plate 121 has a first conductor connecting portion 1211 and two second conductor connecting portions 1212, and the two second conductor connecting portions 1212 are located on two sides of the first conductor connecting portion 1211. The wire connecting assembly 130 has one end for connecting the wire 300 and the other end connected to one of the first wire connecting portion 1211 and the two second wire connecting portions 1212.

The tension string 100 provided by the embodiment of the application comprises a tower connecting component 110, a hardware string connecting component 120 and a wire connecting component 130 which are connected in sequence. By connecting the tower connecting assembly 110 with the tower 200, the wire connecting assembly 130 is connected with the wire 300, so that the tension string 100 can be installed on the power transmission line. The number of the wire connecting assemblies 130 in the tension string 100 may be one, or two, three or more. Each of the wire connection assemblies 130 has one end connected to the wires 300 in one-to-one correspondence, and the other end connected to one of the first wire connection portion 1211 and the two second wire connection portions 1212. When the tension string 100 is used, if one wire 300 needs to be connected, only one wire connecting component 130 needs to be configured in the tension string 100, and the wire connecting component 130 is connected to the first wire connecting part 1211; if two wires 300 need to be connected, two wire connecting assemblies 130 need to be disposed in the tension string 100, and the two wire connecting assemblies 130 are connected to the two second wire connecting portions 1212, respectively.

In summary, since the tension string 100 provided in the embodiment of the present application has the functional yoke plate 121, the functional yoke plate 121 is made of metal and has conductivity. When it is necessary to connect one wire 300 (i.e., a conventional connection), only one wire connection assembly 130 is required to be connected to the first wire connection portion 1211 located at the middle position of the functional yoke plate 121; when two wires 300 need to be connected (i.e. single-to-double connection), two wire connection assemblies 130 need to be connected with two second wire connection portions 1212 on two sides of the functional yoke plate 121, so that the wires 300 can be freely switched between the conventional connection and the single-to-double connection of the functional yoke plate 121, and the method has good flexibility and brings great convenience to the construction and operation maintenance of the power transmission line.

When the overhead ground wire on the double-loop terminal tower is led into a portal frame of a transformer substation (as shown in fig. 2), or when the ground wire cross arm of the double-loop branch tower needs to be changed from one ground wire to two ground wires (as shown in fig. 3), the tension string 100 can be used, and the led-out ground wires are changed from one ground wire to two ground wires through the functional connection plate 101, so as to meet the circuit transmission requirement.

In some implementations of embodiments of the present application, as shown in fig. 1, the first wire connection portion 1211 is located at the center of the second end of the functional yoke plate 121, and the two second wire connection portions 1212 are symmetrically distributed about the first wire connection portion 1211 at the second end of the functional yoke plate 121. When there is only one wire connection assembly 130, it can be connected to the center line of the functional yoke plate 121, which is the center line of the functional yoke plate 121 parallel to the extending direction of the wire 300, to improve the connection stability. When there are two wire connection assemblies 130, the two symmetry sets up the position that is close to the side at the second end of function yoke plate 121 to make the even atress of function yoke plate 121, improve connection stability and intensity.

In some embodiments, the functional yoke plate 121 may also connect three wire connecting assemblies at the same time, that is, the first wire connecting portion 1211 and the second wire connecting portion 1212 are both connected to the wire connecting assembly 130, so as to lead out three wires 300. Generally, the centers of the first wire connecting portion 1211 and the second wire connecting portion 1212 are located on the same straight line to ensure uniform stress.

In some implementations of embodiments of the present application, the functional link plate 121 is an axisymmetric structure, and the number of sides of the axisymmetric structure is greater than or equal to four. Illustratively, the functional link plate 121 is generally a flat plate structure, and may be polygonal, such as rectangular, isosceles trapezoid, regular hexagon, etc., and the symmetry axis of the functional link plate 121 is parallel to the extending direction of the wires 300, so as to facilitate the arrangement of the wire connecting portion and the installation of the wires 300, and to balance the forces applied to the functional link plate 121.

In some implementations of the embodiment of the present application, as shown in fig. 1, the first end of the functional link plate 121 has a hardware string connection portion 1213 corresponding to the first conductor connection portion 1211, and the tower connection assembly 110 is connected to the hardware string connection portion 1213.

At this time, the tower connecting assembly 110, the functional yoke plate 121 and the wire connecting assembly 130 are all made of metal materials, and can allow current to pass through, so that the tension string 100 is generally used for connecting and fixing an overhead ground wire on the tower 200 and the gantry 400.

In some implementations of the embodiment of the present application, as shown in fig. 1, the hardware string connecting assembly 120 further includes two insulator mounting assemblies 122 and a triangular connecting plate 123, and two bottom corners of the triangular connecting plate 123 are respectively connected to one ends of the two insulator mounting assemblies 122.

When the hardware string connecting assembly 121 further includes two insulator string connecting assemblies 122, the vertex angle portion of the triangular link plate 123 is connected to the tower connecting assembly 110, the first end of the functional link plate 121 has two insulator string connecting portions 1214, the two insulator string connecting portions 1214 correspond to the two second wire connecting portions 1212, and the other ends of the two insulator string connecting assemblies 122 are connected to the two insulator string connecting portions 1214.

In order to improve stability, the triangular yoke plate 123 may be selected to have an isosceles triangle shape, as compared to a general triangular yoke plate.

At this time, the tension string 100 cannot conduct electricity due to the presence of the insulator mounting member 122, so the tension string 100 is generally used for connecting and fixing the high-voltage transmission line on the tower 200 and the gantry 400.

In some embodiments, two insulator string connecting portions 1214 and two second wire connecting portions 1212 are correspondingly disposed, and the connecting lines of the insulator string connecting portions 1214 and the second wire connecting portions 1312 located on the same side are parallel to the extending direction of the wires 300, so as to reduce the internal stress of the functional yoke plate 121 and avoid the fracture.

In some implementations of the embodiment of the present application, as shown in fig. 1, the insulator mounting assembly 122 includes a first connection fitting 1221, an insulator string 1222, and a second connection fitting 1223, one end of the first connection fitting 1221 is connected to one bottom corner of the triangular link plate 123, the other end is connected to the insulator string 1222, one end of the insulator string 1222 far away from the first connection fitting 1221 is connected to the second connection fitting 1223, and one end of the second connection fitting 1223 far away from the insulator string 1222 is connected to the insulator string connecting portion 1214.

The first connecting fitting 1221 may be a PS-type parallel link plate, the second connecting fitting 1223 may be a P-type parallel link plate, and the insulator string 1222 is composed of a plurality of insulators, and the insulators may be made of composite material insulators, glass insulators, or ceramic insulators according to actual situations.

In some implementations of embodiments of the present application, as shown in fig. 1, the first wire connection portion 1211, the second wire connection portion 1212, the hardware string connection portion 1213, and the insulator string connection portion 1214 are all through holes. The bolts of the connecting hardware fittings are positioned in the corresponding through holes to realize connection. For example, the second link fitting 1223 may be a P-type parallel link plate, and include two single plates combined together by bolts, when the second link fitting 1223 is connected to the function link plate 121, the bolt passes through the insulator string connecting portion 1214, the function link plate 121 is clamped between the two single plates, and the connection between the second link fitting 1223 and the function link plate 121 is achieved after the bolt is fastened.

In some implementations of the embodiment of the present application, as shown in fig. 1, the second end of the functional yoke plate 121 further has at least one third wire connection portion set (not shown in the figure), where the third wire connection portion set includes two third wire connection portions symmetrically distributed at the second end of the functional yoke plate 121, and the third wire connection portions are through holes and are configured to cooperate with the first wire connection portion 1211 and the second wire connection portion 1212 when there are more than three wire connection assemblies 130, so that the wire connection assemblies 130 are symmetrically distributed at the second end of the functional yoke plate 121.

If it is desired to draw more wires 300 through the functional headers 121, the number of wire connections at the second end of the functional headers 121 may be increased in pairs. The paired addition is to maintain the stress balance of the functional link plates 121 during connection and to provide great adaptability. For example, when a third wire connecting part group, i.e. a pair of third wire connecting parts, is added to the second end of the functional yoke plate 121, the second end of the functional yoke plate 121 has five wire connecting parts, so that when four wire connecting assemblies need to be connected, the two second wire connecting parts 1212 and the two third wire connecting parts can be connected respectively; when it is necessary to connect five wire connection assemblies, the wire connection assemblies may be connected to the first wire connection portion 1211, the two second wire connection portions 1212, and the two third wire connection portions, respectively. By analogy, when the second end of the functional yoke plate 121 has other numbers of wire connection portions, the arrangement method of the wire connection portions and the connection method of the wire connection assembly and the wire connection portions are similar to those of the above examples, and are not described again here. In the embodiment of the present application, the third wire connection portion may be located on a straight line where the first wire connection portion 1211 and the second wire connection portion 1212 are located, so as to equalize the stress on the functional yoke plate 121; or not on the straight line where the first wire connection 1211 and the second wire connection 1212 are located, thereby better distributing space, improving the strength of the functional yoke plate 121, and preventing breakage.

Correspondingly, in some implementation manners of the embodiment of the present application, the first end of the functional link plate 121 further has at least one insulator string connecting part group corresponding to the third wire connecting part group, and the insulator string connecting part group is configured to cooperate with the hardware string connecting part 1213 and the two insulator string connecting parts 1214 when the insulator mounting assembly 122 is more than two, so that the insulator mounting assembly 122 is symmetrically distributed at the first end of the functional link plate 121, and the pulling force applied to each insulator string connecting part 1213 can also be reduced.

In some implementations of embodiments of the present application, as shown in fig. 1, the tower connection assembly 110 includes a third connection fitting 1101, an extension fitting 1102, and a fourth connection fitting 1103. One end of the fourth link fitting 1103 is connected to the tower 200 sequentially through the extension fitting 1102 and the third link fitting 1101, and the other end is connected to the fitting string connection portion 1213 of the functional link plate 121 or connected to the top corner portion of the triangular link plate 123.

The third link fitting 105 and the fourth link fitting 107 may be U-shaped suspension loops, or may be selected as other link fittings according to actual application conditions. When being the U type link, the U type link can be become by U type structure and bolt group, and the U type link passes through the U type structure and forms flexonics with extension gold utensil 106, then dies through the bolt lock, and extension gold utensil 106 can be for the extension ring. The flexible string formed by the structure can compensate tension difference caused by unbalanced force or broken lead on two sides of the insulator string, and unbalanced tension borne by the tower is reduced.

In some implementations of the embodiment of the present application, as shown in fig. 1, the wire connection assembly 130 includes a fifth connection fitting 1301 and a strain clamp 1302, one end of the fifth connection fitting 1301 is connected to the first wire connection portion 1211 or the second wire connection portion 1212, the other end is connected to the strain clamp 1302, and the other end of the strain clamp 1302 is connected to the wire 300. The fifth link fitting 1301 may be a U-shaped suspension loop.

To sum up, the tension string 100 provided by the embodiment of the present application realizes the purpose of leading out a plurality of wires 300 from the functional yoke plate 121 by arranging the functional yoke plate 121 with a plurality of wire connecting portions, and makes the functional yoke plate 121 evenly stressed and easily keep balance due to the symmetrical distribution of the plurality of wires 300 at the second end of the functional yoke plate 121 during connection. When the number of the wires 300 connected to the functional yoke plate 121 needs to be changed, only the connections between the plurality of wire connecting assemblies 130 and the wire connecting portions need to be directly disconnected or established, and a new functional yoke plate 121 or a new tension string 100 does not need to be replaced, which brings great convenience to the construction and operation maintenance of the power transmission line.

The embodiment of the application further provides a tower 200, wherein the tail end of the cross arm of the tower 200 is provided with a hanging point of the tension string 100, and the tension string 100 is hung at the hanging point. The tower 200 includes a single-circuit tower, a double-circuit tower, and a multi-circuit tower. When the tower is a double-loop tower, the tower can be a double-loop terminal tower as shown in fig. 2 and a double-loop branch tower as shown in fig. 3.

As shown in fig. 2, the present embodiment further provides a gantry 400 of a substation, a ground post 401 is disposed on the gantry 400, and the tension string 100 is hung on the ground post 401.

In the present application, it is to be understood that the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

The above description is only for facilitating the understanding of the technical solutions of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (13)

1. A tension string (100), wherein the tension string (100) comprises a tower connecting component (110), a hardware string connecting component (120) and a wire connecting component (130);

the hardware string connecting assembly (120) comprises a function connecting plate (121), a first end of the function connecting plate (121) is connected with the tower connecting assembly (110), a second end of the function connecting plate is provided with a first lead connecting part (1211) and two second lead connecting parts (1212), and the two second lead connecting parts (1212) are positioned on two sides of the first lead connecting part (1211);

the wire connecting assembly (130) has one end for connecting a wire (300) and the other end connected to one of the first wire connecting portion (1211) and the two second wire connecting portions (1212).

2. The strain insulator-string (100) according to claim 1, wherein the first wire connection portion (1211) is located at a center of the second end of the functional yoke plate (121), and two of the second wire connection portions (1212) are symmetrically distributed about the first wire connection portion (1211) at the second end of the functional yoke plate (121).

3. The tension string (100) according to claim 2, wherein the functional yoke plate (121) is an axisymmetric structure, and the number of sides of the axisymmetric structure is greater than or equal to four.

4. The tension string (100) according to claim 1, wherein the first end of the functional yoke plate (121) has a fitting string connection portion (1213) corresponding to the first conductor connection portion (1211), the tower connection assembly (110) being connected to the fitting string connection portion (1213).

5. The tension string (100) according to claim 4, wherein the hardware string connecting assembly (120) further comprises two insulator mounting pieces (122) and a triangular yoke plate (123), and two bottom corners of the triangular yoke plate (123) are respectively connected with one ends of the two insulator mounting pieces (122);

when gold utensil cluster link assembly (120) still includes two when insulator installation closes piece (122), the apex angle portion of triangle yoke plate (123) with shaft tower coupling assembling (110) are connected, the first end of function yoke plate (121) has two insulator string connecting portion (1214), two insulator string connecting portion (1214) and two second wire connecting portion (1212) correspond respectively, two the other end of insulator installation closes piece (122) respectively with two insulator string connecting portion (1214) are connected.

6. The tension string (100) according to claim 5,

the insulator mounting assembly (122) comprises a first connecting fitting (1221), an insulator string (1222) and a second connecting fitting (1223), one end of the first connecting fitting (1221) is connected with one bottom corner of the triangular yoke plate (123), the other end of the first connecting fitting is connected with the insulator string (1222), one end, far away from the first connecting fitting (1221), of the insulator string (1222) is connected with the second connecting fitting (1223), and one end, far away from the insulator string (1222), of the second connecting fitting (1223) is connected with the insulator string connecting portion (1214).

7. The tension string (100) according to claim 6, wherein the first wire connection portion (1211), the second wire connection portion (1212), the fitting string connection portion (1213), and the insulator string connection portion (1214) are all through holes.

8. The tension string (100) according to claim 7, wherein the second end of the functional yoke plate (121) further has at least one third wire connection portion set, the third wire connection portion set includes two third wire connection portions symmetrically distributed at the second end of the functional yoke plate (121), the third wire connection portions are through holes, and the third wire connection portions are used for matching with the first wire connection portion (1211) and the second wire connection portion (1212) when the number of the wire connection components (130) is more than three, so that the wire connection components (130) are symmetrically distributed at the second end of the functional yoke plate (121).

9. The strain insulator string (100) according to claim 8, wherein the first end of the functional yoke plate (121) further has at least one insulator string connecting part set corresponding to the third wire connecting part set, and the insulator string connecting part set is used for being matched with the hardware string connecting part (1213) and the two insulator string connecting parts (1214) when the number of the insulator mounting assemblies (122) is more than two, so that the insulator mounting assemblies (122) are symmetrically distributed at the first end of the functional yoke plate (121).

10. The tension string (100) according to claim 1, wherein the tower connection assembly (110) comprises a third connection fitting (1101), an extension fitting (1102) and a fourth connection fitting (1103),

one end of the fourth connecting fitting (1103) is connected with the tower (200) sequentially through the extension fitting (1102) and the third connecting fitting (1101), and the other end of the fourth connecting fitting is connected with the fitting string connecting part (1213) of the functional connecting plate (121) or connected with the top corner part of the triangular connecting plate (123).

11. The strain insulator-string (100) according to claim 1, wherein the wire connection assembly (130) comprises a fifth connection fitting (1301) and a strain insulator clip (1302), one end of the fifth connection fitting (1301) is connected with the first wire connection portion (1211) or the second wire connection portion (1212), the other end is connected with the strain insulator clip (1302), and the other end of the strain insulator clip (1302) is connected with the wire (300).

12. A tower (200), characterized in that the cross arm end of the tower (200) is provided with the hanging point of the tension string (100) according to any one of claims 1-11, and the tension string (100) is hung at the hanging point.

13. A gantry (400) of a substation, characterized in that a ground post (401) is provided on the gantry (400), to which ground post (401) the tension string (100) according to any of claims 1-11 is attached.

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