阅读说明：本技术 一种220千伏耐张塔跨越用独立双串联塔结构 (Independent double-series-connection tower structure for spanning 220 KV strain tower ) 是由 姚斐 温祥华 高皋 钱志华 夏镇 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种220千伏耐张塔跨越用独立双串联塔结构,包括两个平行间隔设置的连接串、联板,连接串包括自联板一侧依次连接的碗头挂板、绝缘子串、球头挂环、平行挂板二、牵引板、PT调整板、平行挂板一、调整板一、U型挂环二、U型挂环一,以及自联板相对另一侧依次连接的直角挂板、调整板二、U型挂环三、耐张线夹。本发明满足双联双挂点使用要求,绝缘子串与铁塔横担设有两个可靠连接点,且耐张串两联为独立结构,因此即使一个挂点(或一联)出现损坏,也能保证耐张绝缘子串与铁塔的可靠连接,即单联强度满足正常运行状态下的受力要求。此种联塔结构稳定性好,安全性高,并且长度可调,可广泛应用于“三跨”线路。(The invention discloses an independent double-series-connection tower structure for spanning of a 220 KV strain tower, which comprises two connecting strings and connecting plates which are arranged in parallel at intervals, wherein each connecting string comprises a socket head hanging plate, an insulator string, a ball head hanging ring, a parallel hanging plate II, a traction plate, a PT adjusting plate, a parallel hanging plate I, an adjusting plate I, a U-shaped hanging ring II and a U-shaped hanging ring I which are sequentially connected from one side of each connecting plate, and a right-angle hanging plate, an adjusting plate II, a U-shaped hanging ring III and a strain clamp which are sequentially connected from the other side of each connecting plate. The invention meets the use requirement of duplex and duplex hanging points, the insulator string and the cross arm of the iron tower are provided with two reliable connection points, and the tension string duplex is an independent structure, so that even if one hanging point (or one connection) is damaged, the reliable connection of the tension insulator string and the iron tower can be ensured, namely, the strength of the simplex meets the stress requirement under the normal operation state. The tower-connected structure has good stability, high safety and adjustable length, and can be widely applied to three-span lines.)

1. The utility model provides a 220 kilovolt strain insulator tower stridees across with two independent series connection tower structures which characterized in that: the connecting string comprises two connecting strings (1) arranged in parallel at intervals, and a connecting plate (3) connected with the two connecting strings (1) between the two connecting strings (1), wherein the connecting string (1) comprises a socket hanging plate (20), an insulator string (19), a ball hanging ring (18), a parallel hanging plate II (17), a traction plate (16), a PT adjusting plate (15), a parallel hanging plate I (14), an adjusting plate I (13), a U-shaped hanging ring II (12), a U-shaped hanging ring I (11), and a right-angle hanging plate (21), an adjusting plate II (22), a U-shaped hanging ring III (23) and a strain clamp (24) which are sequentially connected from the other side of the connecting plate (3).

2. The isolated dual series tower structure for 220 kv tension tower spanning according to claim 1, wherein: the yoke plate (3) is a rectangular plate, the long edge of one side of the yoke plate is respectively connected with the socket hanging plates (20) on the two connecting strings (1), and the long edge of the other side of the yoke plate is respectively connected with the right-angle hanging plates (21) on the two connecting strings (1).

3. The isolated dual series tower structure for 220 kv tension tower spanning according to claim 1, wherein: PT adjusting plate (15) includes splint (151), connecting plate (152), splint (151) are gone up and are equipped with a plurality of through-holes one (1511) along its length direction interval, splint (151) are parallel interval relatively and are equipped with two, connecting plate (152) one end sets up between two splint (151) and at one of them through-hole one (1511) department with two splint (151) bolted connection, connecting plate (152) are equipped with a plurality of through-hole two (1521) along its length direction interval, parallel link plate one (14) one end is at one of them through-hole two (1521) department and connecting plate (152) bolted connection, traction plate (16) one end sets up between two splint (151) and at one of them through-hole one (1511) department with two splint (151) bolted connection.

4. The isolated dual series tower structure for 220 kv tension tower spanning according to claim 1, wherein: the structure of the first adjusting plate (13) is the same as that of the second adjusting plate (22), the first adjusting plate (13) is triangular, one vertex angle A of the first adjusting plate is connected with the second U-shaped hanging ring (12), a plurality of through holes three (131) are sequentially arranged on the first adjusting plate (13) at intervals, the arrangement direction of the through holes three (131) is consistent with the extending direction of the opposite side of the vertex angle A and is close to the opposite side, and one end of the first parallel hanging plate (14) is connected with the first adjusting plate (13) at one through hole three (131).

5. The isolated dual series tower structure for 220 kv tension tower spanning according to claim 1, wherein: the first parallel hanging plate (14) and the second parallel hanging plate (17) are identical in structure, the first parallel hanging plate (14) comprises two parallel plates (141) which are arranged in parallel at intervals, the first adjusting plate (13) is inserted between the two parallel plates (141) from one ends of the two parallel plates and connected with the two parallel plates through bolts, and the PT adjusting plate (15) is inserted between the two parallel plates (141) from the other ends of the two parallel plates and connected with the two parallel plates through bolts.

6. The isolated dual series tower structure for 220 kv tension tower spanning according to claim 1, wherein: the insulator string (19) is a disc-shaped suspension insulator string.

Technical Field

The invention relates to the technical field of power equipment, in particular to an independent double-series-connection tower structure for spanning 220 KV strain tower.

Background

With the rapid development of national economy in China, the crossing of a power line and a high-speed railway is increasingly frequent. According to the technical requirements of both an electric power department and a railway department, an overhead overpass mode is generally adopted when an electric power line of 220 kilovolt or more crosses a high-speed railway, and an independent strain section is adopted.

At present, the conductor of 220 KV overhead transmission line in China is generally in a double-split type, the conductor strain insulator string adopts double-split single hanging points, only one connecting point is arranged between the conductor strain insulator string and the cross arm of the iron tower, once the hanging points are damaged, the whole insulator string and the conductor can fall to a high-speed railway below, so that quite serious safety influence is caused, small potential safety hazards are caused, the increasingly strict safety production requirements are not met, and improvement is needed.

Disclosure of Invention

The purpose of the invention is as follows: in view of the above problems, the present invention provides an independent dual-series tower structure for spanning a 220 kv tension tower, which ensures reliable connection between a tension insulator string and an iron tower, overcomes the limitation of a single hanging point, and improves safety.

The technical scheme is as follows: the utility model provides a 220 kilovolt strain insulator tower stridees across with independent two series connection tower structures, include the connection cluster that two parallel intervals set up, and the yoke plate of being connected with the two respectively between two connection clusters, the connection cluster includes the socket link plate that connects gradually from yoke plate one side, insulator string, bulb link, parallel link plate two, the traction plate, the PT adjusting plate, parallel link plate one, adjusting plate one, U type link two, U type link one, and the right angle link plate that connects gradually from the relative opposite side of yoke plate, adjusting plate two, U type link three, strain clamp.

Furthermore, the yoke plate is a rectangular plate, the long edge of one side of the yoke plate is respectively connected with the socket hanging plates on the two connecting strings, and the long edge of the other side of the yoke plate is respectively connected with the right-angle hanging plates on the two connecting strings.

Further, the PT adjusting plate comprises clamping plates and connecting plates, a plurality of first through holes are formed in the clamping plates at intervals along the length direction of the clamping plates, the clamping plates are arranged in parallel at intervals, one end of each connecting plate is arranged between the two clamping plates and is in bolted connection with the two clamping plates at one through hole, a plurality of second through holes are formed in the connecting plates at intervals along the length direction of the connecting plates, one end of each parallel hanging plate is in bolted connection with the corresponding connecting plate at the other through hole, one end of each traction plate is arranged between the two clamping plates and is in bolted connection with the two clamping plates at the other through hole.

Furthermore, the first adjusting plate and the second adjusting plate are identical in structure, the first adjusting plate is triangular, one vertex angle A of the first adjusting plate is connected with the second U-shaped hanging ring, a plurality of third through holes are sequentially formed in the first adjusting plate at intervals, the arrangement direction of the third through holes is consistent with the extending direction of the opposite side of the vertex angle A and close to the opposite side, and one end of the first parallel hanging plate is connected with the first adjusting plate at one of the third through holes.

Furthermore, parallel link plate one and parallel link plate two structures are the same, and parallel link plate one includes the parallel plate that two relative parallel intervals set up, and adjusting plate one inserts between the two and is connected with both through the bolt from two parallel plate one end, and the PT adjusting plate inserts between the two and is connected with both through the bolt from two parallel plate other ends.

Preferably, the insulator string is a disk-shaped suspension insulator string.

Has the advantages that: compared with the prior art, the invention has the advantages that: the use requirement of duplex double hanging points is met, the insulator string and the cross arm of the iron tower are provided with two reliable connection points, and the tension string duplex is an independent structure, so that even if one hanging point (or one connection) is damaged, the reliable connection of the tension insulator string and the iron tower can be ensured, namely, the strength of the simplex meets the stress requirement under the normal operation state. The tower-connected structure has good stability, high safety and adjustable length, and can be widely applied to three-span lines (crossing high-speed railways, expressways and important power transmission channels).

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic front view of the PT adjusting plate;

FIG. 4 is a schematic top view of the PT adjusting plate;

fig. 5 is a schematic view of a connection structure between the present invention and an iron tower.

Detailed Description

The present invention will be further illustrated with reference to the following figures and specific examples, which are to be understood as merely illustrative and not restrictive of the scope of the invention.

An independent double-series-connection tower structure for crossing of a 220 KV strain tower is shown in figures 1-5 and comprises two connecting strings 1 arranged in parallel at intervals and a connecting plate 3 connected with the two connecting strings 1.

The connecting string 1 comprises a first U-shaped hanging ring 11, a second U-shaped hanging ring 12, a first adjusting plate 13, a first parallel hanging plate 14, a PT adjusting plate 15, a traction plate 16, a second parallel hanging plate 17, a ball head hanging ring 18, an insulator string 19, a socket head hanging plate 20, a right-angle hanging plate 21, a second adjusting plate 22, a third U-shaped hanging ring 23 and a strain clamp 24, and the insulator on the insulator string 19 is a disc-shaped suspension insulator.

The socket hanging plate 20, the insulator string 19, the ball head hanging ring 18, the parallel hanging plate II 17, the traction plate 16, the PT adjusting plate 15, the parallel hanging plate I14, the adjusting plate I13, the U-shaped hanging ring II 12 and the U-shaped hanging ring I11 are sequentially connected from one side of the connecting plate 3, and the right-angle hanging plate 21, the adjusting plate II 22, the U-shaped hanging ring III 23 and the strain clamp 24 are sequentially connected from the opposite side of the connecting plate 3. The yoke plate 3 is a rectangular plate, the long edge of one side of the yoke plate is respectively connected with the socket hanging plates 20 on the two connecting strings 1, the long edge of the other side of the yoke plate is respectively connected with the right-angle hanging plates 21 on the two connecting strings 1, and the yoke plate 3 plays a role in connecting the two connecting strings 1.

The PT adjusting plate 15 comprises clamping plates 151 and a connecting plate 152, a plurality of first through holes 1511 are arranged on the clamping plates 151 at intervals along the length direction of the clamping plates 151, two clamping plates 151 are arranged in parallel relatively at intervals, one end of the connecting plate 152 penetrates between the two clamping plates 151 and is in bolted connection with the two clamping plates 151 at one through hole 1511, one end of a traction plate 16 is arranged between the two clamping plates 151 and is in bolted connection with the two clamping plates 151 at the other through hole 1511, a plurality of second through holes 1521 are arranged on the connecting plate 152 at intervals along the length direction of the connecting plate 152, one end of a parallel hanging plate 14 is in bolted connection with the connecting plate 152 at one through hole 1521, one parallel hanging plate 14 comprises two parallel plates 141 which are arranged in parallel relatively at intervals, the connecting plate 152 is inserted between the two parallel plates 141 from one ends of the two parallel plates 141, an adjusting plate 13 is inserted between the two parallel plates 141 from the other ends of the two parallel plates 141 and is connected with the two parallel plates through bolts, the adjusting plate 13 is in a triangular structure, a vertex angle A of the U-shaped hanging ring II is connected with a U-shaped hanging ring II 12, a plurality of through holes III 131 are sequentially arranged on the adjusting plate I13 at intervals, the arrangement direction of the through holes III 131 is consistent with the extending direction of the opposite side of the vertex angle A and close to the opposite side, and the two parallel plates 141 are connected with each other at the position of one through hole III 131 through a bolt.

The second parallel hanging plate 17 has the same structure as the first parallel hanging plate 14, and the traction plate 16 and the ball head hanging ring 18 respectively penetrate through two ends of the second parallel hanging plate 17 and are connected through bolts.

The second adjusting plate 22 has the same structure as the first adjusting plate 13, one vertex angle of the second adjusting plate is connected with the right-angle hanging plate 21, and the opposite side of the vertex angle is connected with the third U-shaped hanging ring 23.

The PT adjusting plate is provided with the first through holes and the second through holes, so that the connecting positions of the parts connected with the PT adjusting plate can be adjusted, the total length of each connecting string can be adjusted, the total length deviation of the insulator strings caused by inconsistent wire hanging points and line corners can be balanced, and the mechanical states of wire length, sag, stress and the like of the two connecting strings are guaranteed to be the same through adjustment. The second adjusting plate 22 and the first adjusting plate 13 can also perform the length adjustment function.

Two independent wire hanging plates 100 are respectively arranged on two sides of each iron tower wire cross arm, and each wire hanging plate 100 is provided with a wire hanging point, namely a double-independent-point structure. Each wire hanging plate 100 is considered as a node in the cross arm structure, and the periphery is connected with auxiliary materials, so that the stress form of the whole cross arm is optimized. The horizontal distance between the two wire hanging points is determined by comprehensive calculation according to the horizontal distance between the double split conductors and the angle degree of the iron tower, and the distance between the sub-conductors is kept unchanged. The wire cross arm structure can be used for iron towers under various use conditions. In the use of actual engineering, the stress of the cross arm needs to be checked and calculated according to actual conditions such as tower load, wire type, line corner and the like, and the specification of materials and the machining size are properly adjusted.

The invention adopts a duplex double hanging point structure type, each connecting string is independently a pair, and a completely independent hanging point is arranged and connected with the iron tower hanging wire plate 100. The tower-connected hardware fitting is improved by one strength grade compared with the insulator string so as to ensure the use safety. The two connection strings are connected by a connection plate (the strength grade is the sum of the two connections), when the single connection is damaged, the other connection can still meet the strength requirement under the normal operation state, the reliable connection of the lead and the iron tower is ensured, and the double insurance is equivalently formed on the lead insulator string.