CN104078776A - Fixed connector used for hot-line work on high voltage line - Google Patents

Abstract

The invention provides a fixed connector used for hot-line work on a high voltage line. The fixed connector comprises a main connecting part connected with the high voltage line and an auxiliary connecting part fixedly arranged on the main connecting part. The main connecting part comprises a connecting block, a connecting cavity is formed in the connecting block in the length direction of the connecting block, a top block used for being matched with the top of the connecting cavity and clamping and fixing the high voltage line is arranged in the connecting cavity, and the top block can move up and down in the connecting cavity. A line inlet is formed in the side wall of the connecting cavity so that the high voltage line and a branch line can be stably and reliably connected. It can be guaranteed that hot-line operation is performed, power does not need to be cut off, and an electric power system runs stably. Moreover, the fixed connector has high current-carrying capacity and can effectively prevent the high voltage line side or the branch line side from being burnt out, and thus stable operation of the electric power system is guaranteed. The fixed connector is simple in structure and convenient to implement.

Description

Fixed connectors for live working on high voltage lines

technical field

The invention relates to the field of electric equipment, in particular to a fixed connector for live working on high-voltage lines.

Background technique

In the power system, the high-voltage line is mainly used to transmit electric energy, and the high-voltage line is also connected to many electrical equipment, such as the connection between various switches, isolating switches and busbars in substations, or the connection of lead wires such as lightning arresters on high-voltage lines and ultra-high-voltage lines to busbars. , At the same time, there are also a large number of distribution lines to install branch lines, etc., all need to connect the busbar (or main line) to other downconductors (branch lines). This connection fittings are called connecting fittings in the power department. However, many existing connecting fittings can only be carried out in a power failure state. Due to the power supply reliability requirements of the power system, many tasks need to be carried out in a live state. And although existing connecting fittings are of a great variety, limited by conditions, they can only be applied to carry out operations under the power failure state.

Although there are live loading and unloading clamps in the busbar fittings of substations at present, there are the following problems: when the current load is too large, on the one hand, it is easy to burn out the lead joints. On the other hand, it is easy to burn out the busbar side clamp. Therefore, the existing substation side loading and unloading clamps can only be used for temporary disposal during accidents, or for branch line connections with small loads on distribution lines.

Therefore, it is necessary to propose a new connection device between the high-voltage line and other branch lines, which can ensure the live operation during the operation without power failure, ensure the stable operation of the power system, and have a large carrying capacity, which can effectively prevent the side of the high-voltage line or Burning loss occurs on the side of the branch line, thereby ensuring the stable operation of the power system.

Contents of the invention

In view of this, the purpose of the present invention is to provide a fixed connector for live work on high-voltage lines, which can ensure that the live operation is carried out during the operation, without power failure operation, to ensure the stable operation of the power system, and has a large carrying capacity, which can effectively Prevent burning on the side of the high-voltage line or the side of the branch line, thereby ensuring the stable operation of the power system.

A fixed connector for live work on high-voltage lines provided by the present invention includes a main connection part connected to the high-voltage line and a secondary connection part fixedly arranged on the main connection part, the main connection part includes a connection block, and the inner edge of the connection block Its length direction is provided with a connecting cavity, and the connecting cavity is provided with a jacking block for cooperating with the top of the connecting cavity and clamping and fixing the high-voltage wire. The jacking block can move up and down in the connecting cavity, and the side of the connecting cavity The wall is provided with a wire inlet.

Further, the top block is driven to move up and down in the connection chamber by the driving member and exerts a pre-tightening force on the high-voltage wire in the connection chamber.

Further, the driving member is a driving screw, and there are two driving screws and one end of the driving screw protrudes from the bottom outside of the connecting block into the connecting cavity and is fixedly connected with the top block, and the driving screw is threadedly matched with the connecting block .

Further, the other end of the driving screw is provided with a buckle; or, the end of the other end of the driving screw has a four-sided or six-sided structure.

Further, the upper surface of the top block sinks along the length direction of the top block to form an arc-shaped groove.

Further, the secondary connecting part includes a connecting column fixedly arranged with the connecting block and a clamping assembly fixedly fitted with the connecting column, and the clamping assembly includes a fixing plate and a connecting piece for fixing the fixing plate on the connecting column.

Further, the outer wall of the connecting column is provided with a wire-holding groove, and the length extension direction of the wire-holding groove is the same as that of the connecting column, and the side wall of the connecting column on the side where the wire-holding groove is arranged is a planar structure.

Further, the fixing plate is longitudinally provided with a clamping slot, and the clamping slot cooperates with the clamping slot to clamp the power wire.

Further, the fixing plate is provided with a connecting hole, the connecting piece is a U-shaped ring, and the end of the U-shaped ring is inserted into the connecting hole and fixed by a nut.

Further, the side wall of the connecting column is provided with U-shaped protrusions, and the opening direction of the U-shaped protrusions faces one side of the plane of the connecting column, and each group of two U-shaped protrusions and two U-shaped protrusions A limiting groove is formed between the protrusions, and the U-shaped ring is embedded in the limiting groove.

Beneficial effects of the present invention: the fixed connector for live work on high-voltage lines provided by the present invention can make the high-voltage lines and branch lines stably and reliably connected; it can ensure the live operation during the operation without power failure, and ensure the stable operation of the power system; and With a large carrying capacity, it can effectively prevent burning loss on the side of the high-voltage line or the side of the branch line, thereby ensuring the stable operation of the power system; the structure is simple and the implementation is convenient.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a left view of Fig. 1 after removing the fixing block and connecting piece.

Fig. 3 is a structural schematic diagram of the fixing plate of the present invention.

Fig. 4 is a schematic diagram of the connection structure of the fixed plate and the connecting piece of this side.

Detailed ways

Fig. 1 is a schematic structural view of the present invention, Fig. 2 is a left side view after removing the fixed block and connectors in Fig. 1, Fig. 3 is a schematic structural view of the fixed plate of the present invention, and Fig. 4 is the connection structure of the fixed plate and the connectors of the present invention Schematic, as shown.

A fixed connector for live work on high-voltage lines provided by the present invention includes a main connection part connected to the high-voltage line and a secondary connection part fixedly arranged on the main connection part, the main connection part includes a connection block 1, and the connection block 1 A connection cavity 10 is provided inside along its length direction, the connection cavity 10 penetrates the connection block 1, and the connection block 1 is provided with a top block 12 for cooperating with the top of the connection cavity 1 and clamping and fixing the high-voltage line. The top block 12 can move up and down in the connection cavity 10, the side wall of the connection cavity 10 is provided with a wire inlet 11, as shown in Figure 1, through the action of the top block and the connection block, the high voltage wire can be clamped stably and reliably. Hold, so as to ensure the reliability of the electrical connection, through the function of the wire inlet, it is convenient to place the high-voltage wire in the connection cavity, especially for the high-voltage wire whose ends have been fixed, it is more convenient to use, the upper and lower in this embodiment That is up and down as shown in Figure 1 and Figure 2.

In this embodiment, the top block 12 is driven by a driving member and moves up and down in the connecting chamber 10 and exerts a pre-tightening force on the high-voltage wire in the connecting chamber 12. The driving member is a driving screw 8, and the driving screw 8 is Two and one end of the drive screw 8 protrudes from the outside of the bottom of the connection block 1 into the connection cavity 10 and is fixedly connected with the top block 12. The drive screw 8 is screwed with the connection block 1. Through this structure, in the normal state Next, turn the driving screw so that the top block is placed at the bottom of the connection cavity, so that the high-voltage wire enters the connection cavity. When the high-voltage line enters the connection cavity, turn the drive screw to push the top block to move to the top of the connection cavity and when After the top block and the connecting cavity clamp the high-voltage wire, the driving screw continues to be rotated to apply a pre-tightening force to the high-voltage wire to ensure the reliability of the contact between the high-voltage wire and the connecting block.

In this embodiment, the other end of the driving screw 8 is provided with a buckle 9; or, the other end of the driving screw 8 has a four-sided or six-sided structure. Through the above structure, when the present invention is applied to an overhead high-voltage line , the driving screw can be rotated through the operating rod (operating rod is the prior art) inserted into the buckle or provided with a four-edged sleeve or a six-edged sleeve, so that the top block and the connecting block can fasten the high-voltage line connect.

In this embodiment, the upper surface of the top block 12 sinks along the length direction of the top block to form an arc-shaped groove 16, and the top of the connection cavity 10 is also an arc-shaped structure, and the top block 12 and the top of the connection cavity 10 fit together A cylindrical clamping gap is formed, which facilitates the clamping of high-voltage wires with generally circular cross-sections, and helps prevent the deformation of high-voltage wires during the clamping process. More importantly, because the cross-section of high-voltage wires is generally circular, it is therefore , with this structure, the high-voltage line can be fully contacted with the connecting machine, which can ensure a large current-carrying capacity, and prevent the high-voltage line side or the branch line side from burning out and affect the stability of the power system; the bottom of the connection cavity is a rectangular structure, It is convenient to place the top block in the non-use state, and the height of the top block is less than the height from the bottom of the connection chamber to the lower surface of the wire inlet. Through this structure, it is convenient for high-voltage wires to enter the connection chamber without causing entry obstacles.

In this embodiment, the secondary connecting part includes a connecting column 5 fixedly arranged with the connecting block 1 and a clamping assembly fixedly fitted with the connecting column 5, and the clamping assembly includes a fixing plate 2 and is used to fix the fixing plate 2. The connector on the connecting column 5, the outer wall of the connecting column 5 is provided with a clamping groove 15, the length extension direction of the clamping groove 15 is the same as the length extending direction of the connecting column 5, and the connecting column 5 is provided with a clamping The side wall on one side of the line groove 15 is a plane structure, and the fixed plate 2 is longitudinally provided with a clamping groove 14, and the clamping groove 14 cooperates with the clamping groove 15 to clamp the electric wire. Other power wires are clamped, such as detection wires, etc., and the clamping groove and the clamping groove cooperate to form a cylindrical gap, which can make the branch line fully contact with the connecting machine, ensure a large current carrying capacity, and prevent burning. , which facilitates the clamping of electric power with a generally circular cross-section, and helps to prevent the deformation of the power wires during the clamping process. The connecting column and the connecting block are integrally arranged, with high structural strength and good electrical connectivity. This implementation The vertical direction in the example is the up-down direction shown in FIG. 3 .

In this embodiment, the fixing plate 2 is provided with a connecting hole 13, the connecting piece is a U-shaped ring 7, and the end of the U-shaped ring 7 is inserted into the connecting hole 13 and the fixing plate 2 is fixed by a nut 6 On the connecting column 5, the end side wall of the U-shaped ring 7 is provided with a connecting thread. Through this structure, on the one hand, it is convenient to adjust the tightness between the fixing plate and the connecting column, and it is convenient to place the wire in the clamping groove. Between it and the clamping slot, it is beneficial to clamp the power wires, on the other hand, it is convenient to remove the fixing plate for maintenance.

In this embodiment, at least two U-shaped protrusions 3 are provided on the side wall of the connecting column 5, and the opening direction of the U-shaped protrusions 3 faces one side of the plane of the connecting column 5, and the U-shaped protrusions 3 A limit groove 4 is formed between two U-shaped protrusions 3 in a group, and the U-shaped ring 7 is embedded in the limit groove 4 (when the fixed plate 2 is fixedly connected with the connecting column 5, the U-shaped ring 7 is embedded in the limiting groove 4), because the side wall of the connecting column is provided with a planar structure, which is beneficial to the cooperation of the fixing plate and the connecting column, therefore, a U-shaped protrusion is set on the non-planar side wall of the connecting column, and the U-shaped protrusion The opening direction of the U-shaped ring faces the side of the plane side wall of the connecting column, and the U-shaped ring can be well limited by the limiting groove formed between the U-shaped protrusions to prevent the fixing plate from slipping during the fabrication process.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. A fixed connector for live work on high-voltage lines, characterized in that: it includes a main connection part connected to the high-voltage line and a secondary connection part fixedly arranged on the main connection part, the main connection part includes a connection block, and the connection block There is a connecting cavity inside along its length direction, the connecting cavity is provided with a top block for cooperating with the top of the connecting cavity and clamping and fixing the high-voltage wire, the pushing block can move up and down in the connecting cavity, and the connecting cavity The side wall is provided with a wire inlet. 2 . The fixed connector for live working on high-voltage lines according to claim 1 , wherein the top block is driven to move up and down in the connection cavity by a driving member and exerts a pre-tightening force on the high-voltage lines in the connection cavity. 3 . 3. The fixed connector for live work on high-voltage lines according to claim 2, characterized in that: the driving member is a driving screw, and there are two driving screws, and one end of the driving screw extends from the bottom outside of the connecting block to the The connecting cavity is fixedly connected with the top block, and the driving screw is threadedly matched with the connecting block. 4. The fixed connector for live work on high-voltage lines according to claim 3, characterized in that: the other end of the driving screw is provided with a buckle; or, the end of the other end of the driving screw has a four-sided or six-sided structure . 5 . The fixed connector for live working on high-voltage lines according to claim 4 , wherein the upper surface of the jacking block sinks along the length direction of the jacking block to form an arc-shaped groove. 6. The fixed connector for live work on high-voltage lines according to claim 1, wherein the secondary connecting part includes a connecting column fixedly arranged with the connecting block and a clamping assembly fixedly fitted with the connecting column, the clamping The assembly includes a fixing plate and a connecting piece for fixing the fixing plate on the connecting column. 7. The fixed connector for live work on high-voltage lines according to claim 6, characterized in that: the outer wall of the connecting column is provided with a wire clamping groove, and the length extending direction of the wire clamping groove is the same as that of the connecting column , the side wall on the side where the connecting column is provided with the wire clamping groove is a planar structure. 8 . The fixed connector for live work on high-voltage lines according to claim 7 , wherein the fixed plate is longitudinally provided with a clamping groove, and the clamping groove cooperates with the clamping groove to clamp the power conductor. 9. The fixed connector for live working on high-voltage lines according to claim 8, wherein the fixed plate is provided with a connection hole, the connector is a U-shaped ring, and the end of the U-shaped ring is inserted into the connection hole center and secure with nuts. 10. The fixed connector for live working on high-voltage lines according to claim 9, characterized in that: the side wall of the connecting post is provided with a U-shaped protrusion, and the opening direction of the U-shaped protrusion faces the plane of the connecting post. On one side, the U-shaped protrusions are in groups of two and a limiting groove is formed between the two U-shaped protrusions, and the U-shaped ring is embedded in the limiting groove.