CN102005711B - Jumper device for 6-4 bundle conductors of power transmission line - Google Patents

Abstract

The invention discloses a wire jumper device for six-variable and four-split conductors of a power transmission line. The device is composed of two corresponding semi-circular three-variable second-wire clamps to form a jumper clamp, and a double connecting plate is arranged between the two three-variable second-wire clamps , Connect and fix the second wire clips of the two or three transformers through bolts, and fix the second wire clips of the two or three transformers with the equipment wire clips. The jumper device is suspended on the strain tower by connecting fittings and insulators, and is located in the center of the whole jumper, which reduces vibration and oscillation, and avoids the transmission line being subjected to external forces such as wind, ice or snow. Vibration and vibration often occur, which concentrates the force on the three-variable and two-jumper clips, and there is nowhere to release the stress, which leads to the problem that the drainage clips break. Reliably realize the purpose of the invention. At the same time, it has the advantages of novel and unique invention concept, compact and reasonable structural design, stable and reliable working performance, and is suitable for vigorous promotion in the industry.

Description

Six-variable and four-split wire jumper device for transmission lines

Technical field: The present invention relates to a diversion jumper device for a tension tower in a power transmission line, in particular to a diversion jumper device for connecting unequal numbers of split wires (six to four) on both sides of a branched strain tower.

Background technology: The tension tower of the transmission line needs to use a jumper wire to drain the current. The jumper wire connects the wires on both sides of the tension tower to form a current channel. Normally, the number of the same phase conductors on both sides of the transmission line strain tower is equal, but in special cases, the number of the same phase conductors on both sides of the transmission line strain tower is not equal, for example, 500kV compact line When the phase conductor adopts the six-split form (six conductors) connected to the 500kV general line, when each phase conductor adopts the four-split form (four conductors), the jumper of the strain tower will complete the jumper of the unequal number of split conductors on both sides from six to four join function. At present, there are two main ways to connect the jumper wires on the divergent strain towers of the transmission line to realize the connection of unequal number of split conductors. The connection at the tension clamp is to connect the drain clamp of a tension clamp to the terminal board on one side of the three-variable second-wire clamp, and then connect the terminal board of the three-transformer second-wire clamp to the other two strain clamps through soft wires. The two aluminum tubes on the other side of the three-variable second-wire clamp are crimped together with the two wires. The biggest disadvantage of this connection method is that the drainage clamp connected with the tension clamp and the three-variable second-line clamp at the same time is prone to breakage, because the transmission line often vibrates under the external force of wind, ice or snow. And vibration, the three-variable second-line clamp and the jumper line clamp are self-heavy, and the stress points are concentrated, which increases the stress caused by the vibration and has no place to release the stress. This will cause the root of the drainage line clamp to break, often causing transmission line failures and affecting the power system. normal operation. Another method is to use aluminum tube jumper devices, for example, the six-variable four- and eight-variable six-aluminum tube jumper devices used in large-span sections of UHV transmission lines. Due to the high cost of aluminum tube jumper devices and the need for special Due to the complexity of design and construction, this method is rarely used in 500kV transmission lines.

Summary of the invention: The purpose of the present invention is to provide a six-variable and four-split wire jumper device for transmission lines, mainly to solve the problem of existing jumper wire devices on both sides of the tension tower of the transmission line when completing the connection of unequal number of split wires. The drainage clamps connected by the strain-resistant clamps and the second-line clamps of the three transformers are easy to break, causing failures and affecting the normal operation of the power system. The use of aluminum tube jumper devices is also a problem of high cost and complicated construction.

The present invention will take the following technical measures to achieve: it includes bolts, which are mainly composed of two corresponding semi-annular three-change second-line clamps to form jumper clamps, and double connecting plates are set between the two three-change second-line clamps. The two-three transformer second-wire clips are connected and fixed, and the two-three transformer second-wire clips are fixedly connected to the equipment wire clips.

The three-variable two-line clamp is a terminal plate with three on one side and two on the other side vertically arranged on the semi-annular frame along the half-ring, and a reinforcing rib terminal is arranged radially at the symmetrical center of the semi-annular frame The metal connecting frame of the board, and the terminal board of the reinforcing rib and the double connecting board, and the terminal board set along the half ring and the equipment clamp are fixedly connected.

The double connecting plate is two centrally symmetrical connecting plates, the two sides protrude and are provided with a terminal plate corresponding to the reinforcing rib terminal plate on the three-variable second-wire clamp, and a heavy hammer installation hole is reserved on the connecting plate .

The equipment clamp is composed of a head and a tail. The outer surface of the head is semicircular and the lower surface is flat. It is fixedly connected with the terminal board set along the half ring.

The present invention adopts the above-mentioned structure, especially the organic combination of two three-variable second-line clips, connecting plates and equipment line clips is provided, so that the six-variable four-wire jumper device of the present invention can be suspended on the resistance by connecting fittings and insulators. Zhang tower, and in the center of the entire jumper. The mechanical load borne by the six-variable four-wire jumper device is transmitted to the strain tower through the connecting fittings and insulators, thereby improving the stress conditions of the drainage clamp in the transmission line, reducing vibration and oscillation, and reducing the strain resistance. The alternating stress at the clip drainage plate avoids the phenomenon that the drainage clip is broken and the root of the strain clip drainage plate is broken when the transmission line is subjected to external forces such as wind, ice or snow. Improve the reliability of transmission line operation. And because the soft jumper has appropriate slack, when the jumper vibrates, the whole jumper device has a certain degree of flexibility, and no anti-galling measures need to be taken. At the same time, compared with the use of aluminum tube jumpers, it can not only reduce the cost by half, but also has simple processing and manufacturing, and is convenient for transportation and construction. And it has the advantages of novel and unique invention concept, compact and reasonable structural design, stable and reliable electrical performance, and is suitable for vigorous promotion in the industry. Compared with the prior art, the technical solution of the present invention has outstanding substantive features and remarkable progress.

Description of drawings:

Fig. 1 is the overall structure right view of the present invention;

Fig. 2 is the overall structure front view of the present invention;

Fig. 3 is the overall structure left view of the present invention;

Fig. 4 is the right view of the three-variable second-wire clip;

Fig. 5 is the front view of the three-variable second-wire clamp;

Fig. 6 is a left view of the three-variable second-wire clip;

Figure 7 Schematic diagram of double connecting plate structure

Fig. 8 is a front view of the equipment clamp;

Fig. 9 is a top view of the equipment clip.

Specific embodiments: the transmission line six-variable four-split wire jumper device of the present invention shown in Fig. 1-Fig. The described three-change two-line clamp 1 is a terminal board 4 that is vertically arranged on the semi-circular frame along the semi-circle with three on one side and two on the other side.

A metal connection frame for the rib terminal board 5 is provided. Through the terminal board 4 set along the half ring through the three-variable second-line clamp 1, the equipment line clamp 2 is fixedly connected to it through the bolt 6. The equipment clamp 2 is composed of a head and a tail. The outer surface of the head is semicircular, the lower surface is a plane, and the tail is tubular and crimped with the wire. Since the head of the connecting bolt 6 is embedded in the upper surface, it has a good anti-corona effect. Simultaneously between the two three-variable second-wire clamps 1, a double connecting plate 3 is set in the ring formed by the six-variable four-jumper wire clamps formed by the three-variable second-wire clamp 1, and the double connecting plate 3 is connected by the connecting bolt 6 through the double connecting plate 3. Two three-variable second-wire clamps 1 are connected and fixed. The double connecting plate 3 is two centrally symmetrical connecting plates, the two sides protrude and are provided with a terminal plate corresponding to the reinforcing rib terminal plate 5 on the three-variable second-line clamp 1, and are integrally connected by connecting bolts 6. In this double connecting The plate 3 is also provided with a fitting hole and a heavy hammer installation hole, and the jumper device of the present invention is connected with the fittings and insulators through the fitting hole and then hung on the tension tower. hammer to reduce windage of the jumper. When the jumper device of the present invention vibrates and oscillates under the action of external force, it can improve the stress condition of the drain clamp in the transmission line, reduce the alternating stress at the drain plate of the tension clamp, and avoid the breakage of the drain clamp of the transmission line And the occurrence of fracture at the root of the strain clamp drainage plate. Reliably realize the purpose of the invention. The structure of the present invention can be fully expanded to be used in split wire jumper devices with unequal numbers of eight to six, four to two, etc., and has broad application prospects and popularization value.

Claims (2)

1. a transmission line six becomes the conductors on quad bundled bridle wire apparatus; Comprise connecting bolt (6); It is characterized in that: this device is provided with by two corresponding semi-circular three and becomes the jumper clamp that two wire clamps (1) are formed; Between two or three change two wire clamps (1), establish duplex fishplate bar (3), it is fixing to become two wire clamps (1) connection through bolt (6) with two or three, and two or three change two wire clamps (1) are fixedly connected with device clamp (2); Described three become two wire clamps (1) be in semi-circular framework upper edge semi-ring vertically be provided with a side into three, opposite side is two equally distributed terminal board (4), and radially is provided with the metal link of reinforcement terminal board (5) in semi-circular framework symmetrical centre; Described duplex fishplate bar (3) is that two center symmetric figures connect plate, and both sides are protruded and are provided with three change two wire clamps (1) and go up the corresponding terminal board of reinforcement terminal board (5), also are provided with the weight installing hole on this connection plate.

2. transmission line six according to claim 1 becomes the conductors on quad bundled bridle wire apparatus; It is characterized in that: described device clamp (2) is made up of head, tail two parts; Its head outer surface is semicircle; Lower surface is the plane, and is fixedly connected along the set terminal board of semi-ring (4), and afterbody is tubular and conductor compression jointing.

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