An adaptive copper-aluminum transition clamp device for 10kV line transformer

Abstract

The invention discloses an adaptive copper-aluminum transition wire clamp device for a 10kV line transformer, which includes a slot block and a wedge block. The slot block is a square structure, a cylindrical wire hole 1 is provided in the middle of the slot block, and a connected U-shaped slot hole is provided on the side of the wire hole 1. The wedge block is a square structure, a through hole is provided in the middle of the wedge block, and a cylinder pad is provided in the through hole, and a wire hole 2 is provided in the middle of the cylinder pad. A clamp is fixedly connected to the side wall of the wedge block, and a square hole is provided on the clamp. The clamp extends into the U-shaped slot hole and is connected to the slot block by bolts, and the bolts are located in the square hole. The wire clamp design can adapt to any distribution transformer pile head, and when the wire clamp is overcurrent and heated, due to the inconsistency of the thermal expansion coefficients of copper and aluminum, the copper and aluminum transition will be in closer contact, reducing the contact resistance, making it difficult for the wire clamp to break, and achieving a good use effect.

Description

Technical Field

[0001] The invention relates to a transformer wire clamp, in particular to an adaptive copper-aluminum transition wire clamp device for a 10kV line transformer, belonging to the technical field of power transmission line equipment. Background Art

[0002] At present, the low-voltage pile head of the 10kV line transformer adopts copper-aluminum transition of the equipment wire clamp. Due to the inconsistent thermal expansion coefficients of copper and aluminum, when the wire clamp is over-current and heated, the copper-aluminum transition is prone to breakage and burning, which will lead to phase loss, causing large-scale power outages in the corresponding areas and causing unnecessary losses. Summary of the invention

[0003] The technical problem to be solved by the present invention is: to provide an adaptive copper-aluminum transition wire clamp device for a 10kV line transformer. The wire clamp design can adapt to any distribution transformer pile head, and when the wire clamp is overcurrent and heated, due to the inconsistency of the thermal expansion coefficients of copper and aluminum, the copper and aluminum transition will be in closer contact, reducing the contact resistance and making the wire clamp less likely to break, effectively solving the above-mentioned problems.

[0004] The technical solution of the present invention is: an adaptive copper-aluminum transition wire clamp device for a 10kV line transformer, which includes a slot block and a wedge block. The slot block is a square structure, a cylindrical wire hole one is provided in the middle of the slot block, and a connected U-shaped slot hole is provided on the side of the wire hole one. The wedge block is a square structure, a through hole is provided in the middle of the wedge block and a barrel pad is padded in the through hole, a wire hole two is provided in the middle of the barrel pad, a clamping seat is fixedly connected to the side wall of the wedge block, a square hole is provided on the clamping seat, the clamping seat extends into the U-shaped slot hole and is connected to the slot block by bolts, and the bolts are located in the square hole.

[0005] The side wall of the slot block is provided with a screw hole, in which a locking screw is arranged, and the clamping seat is locked in the U-shaped slot hole by the locking screw.

[0006] A second locking screw is provided on the side wall of the wedge block, and the second locking screw passes through the barrel pad and extends into the second wire hole to lock the wire.

[0007] The opposite surface of the clamping seat to the first wire hole is an arc surface, on which a thread is arranged, and a groove is arranged on the side wall of the clamping seat opposite to the arc surface, and the end of the first locking screw is located in the groove for clamping.

[0008] The materials of the cylinder gasket and the second locking screw are aluminum, and the remaining materials are copper.

[0009] The beneficial effects of the present invention are as follows: compared with the prior art, the technical solution of the present invention is adopted, and the wire clamp design can adapt to any distribution transformer pile head, and when the wire clamp is overcurrent and heated, due to the inconsistency of the thermal expansion coefficients of copper and aluminum, the transition between copper and aluminum will be in closer contact, reducing the contact resistance, making it difficult for the wire clamp to break. When the wire clamp slot block and the wedge block fit together, they are fixed by the copper bolts on the side of the slot block and pushed forward by the copper screws on the bottom surface of the slot block, so that the transformer pile head in the U-shaped slot hole can fit firmly, and the upper part of the wedge block is fixed by two aluminum screws to the aluminum wire passing through the through hole. The aluminum wire is located in the barrel pad of the aluminum material. When heated, due to the thermal expansion coefficient of aluminum being larger than that of copper, the barrel pad will expand and be further clamped in the wedge block without causing the phenomenon of breaking, burning, etc., and a good use effect is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention;

[0011] Figure 2 It is the A-direction view of the present invention;

[0012] Figure 3 It is a schematic diagram of the slot block structure of the present invention;

[0013] Figure 4 This is a schematic diagram of the wedge structure of the present invention;

[0014] Figure 5 This is a view of the slot block B of the present invention;

[0015] Figure 6 It is a C-direction view of the wedge block of the present invention. DETAILED DESCRIPTION

[0016] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings of this specification.

[0017] Embodiment 1: As attached Figures 1 to 6 As shown, an adaptive copper-aluminum transition wire clamp device for a 10kV line transformer includes a slot block 2 and a wedge block 4. The slot block 2 is a square structure, a cylindrical wire hole 1 is provided in the middle of the slot block 2, and a connected U-shaped slot hole 9 is provided on the side of the wire hole 1. The wedge block 4 is a square structure, a through hole is provided in the middle of the wedge block 4, and a barrel pad 6 is padded in the through hole, and a wire hole 11 is provided in the middle of the barrel pad 6. A clamping seat 10 is fixedly connected to the side wall of the wedge block 4, and a square hole 12 is provided on the clamping seat 10. The clamping seat 10 extends into the U-shaped slot hole 9 and is connected to the slot block 2 through a bolt 3, and the bolt 3 is located in the square hole 12.

[0018] Furthermore, a screw hole 8 is provided on the side wall of the slot block 2, and a locking screw 7 is provided in the screw hole 8, and the holder 10 is locked in the U-shaped slot hole 9 by the locking screw 7).

[0019] Furthermore, a locking screw 2 5 is provided on the side wall of the wedge block 4 , and the locking screw 2 5 passes through the barrel pad 6 and extends into the wire hole 2 11 to lock the wire.

[0020] Furthermore, the surface of the clamping seat 10 opposite to the wire hole 1 is an arc surface 13, on which a thread is provided, and a groove 14 is provided on the side wall of the clamping seat 10 opposite to the arc surface 13, and the end of the locking screw 7 is located in the groove 14 for clamping. The transformer pile head cooperates with the clamping seat 10 through the thread on the arc surface 13, and is then locked with the locking screw 7, ensuring a reliable connection.

[0021] Furthermore, the materials of the cylinder gasket 6 and the locking screw 2 5 are aluminum, and the remaining materials are copper.

[0022] The design of the wire clamp can adapt to any distribution transformer pile head, and when the wire clamp is overcurrent and heated, due to the inconsistency of the thermal expansion coefficients of copper and aluminum, the transition between copper and aluminum will be in closer contact, reducing the contact resistance and making the wire clamp less likely to break. When the slot block and the wedge block of the wire clamp fit together, they are fixed by the copper bolts on the side of the slot block and pushed forward by the copper screws on the bottom of the slot block, so that the transformer pile head in the U-shaped slot hole can fit firmly. The upper part of the wedge block is fixed by two aluminum screws to the aluminum wire passing through the through hole. The aluminum wire is located in the barrel gasket of the aluminum material. When heated, since the thermal expansion coefficient of aluminum is larger than that of copper, the barrel gasket will expand and be further clamped in the wedge block without breaking or burning, etc., and a good use effect has been achieved.

[0023] The parts not described in detail in the present invention are all known technologies to those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An adaptive copper-aluminum transition clamp device for a 10kV line transformer, characterized in that: It comprises a slot block (2) and a wedge block (4). The slot block (2) is a square structure. A cylindrical wire hole (1) is provided in the middle of the slot block (2). A U-shaped slot hole (9) is connected to the side of the wire hole (1). The wedge block (4) is a square structure. A through hole is provided in the middle of the wedge block (4). A cylinder pad (6) is provided in the through hole. A wire hole (11) is provided in the middle of the cylinder pad (6). A clamping seat (10) is fixedly connected to the side wall of the wedge block (4). The clamping seat (10) is provided with a square hole (12). The clamping seat (10) extends into the U-shaped slot hole (9) and is connected to the slot block (2) by a bolt (3). The bolt (3) is located in the square hole (12). The side wall of the slot block (2) is provided with a screw hole (8). The screw hole (8) is provided in the side wall of the slot block (2). A locking screw (7) is provided in the hole (8), and the clamping seat (10) is locked in the U-shaped slot hole (9) by means of the locking screw (7); a locking screw (5) is provided on the side wall of the wedge block (4), and the locking screw (5) passes through the barrel pad (6) and extends into the wire hole (11) to lock the wire; the surface of the clamping seat (10) opposite to the wire hole (1) is an arc surface (13), and the arc surface (13) is provided with a thread, and a groove (14) is provided on the side wall of the clamping seat (10) opposite to the arc surface (13), and the end of the locking screw (7) is located in the groove (14) for clamping; the material of the barrel pad (6) and the locking screw (5) is aluminum, and the remaining materials are copper.

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