Copper-aluminum conversion wire harness

Abstract

The utility model relates to the technical field of photovoltaic cable wiring equipment, and provides a copper-aluminum conversion wire harness, which comprises a copper-aluminum photovoltaic connector, a copper wire and a photovoltaic cable joint, the copper-aluminum photovoltaic connector comprises a main body, nuts, a sealing inner plug and a copper-aluminum pipe, the nuts are arranged at the two ends of the main body respectively, the sealing inner plug and the nuts are in threaded connection with the main body, the sealing inner plug is contained in the nuts, and the copper-aluminum pipe is contained in the main body; one end of the copper wire is connected with the photovoltaic cable connector, the other end of the copper wire sequentially penetrates through the nut of the copper-aluminum photovoltaic connector and the sealing inner plug, then is inserted into the copper pipe of the copper-aluminum pipe and is connected with the copper pipe in a pressing mode, the nut of the copper-aluminum photovoltaic connector is connected with the main body in a threaded mode, and the sealing inner plug is extruded inwards to wrap and clamp the copper wire. The connecting device overcomes the defects in the prior art, is reasonable in design and convenient to use, and solves the technical problems of connection convenience and sealing reliability of copper wires and aluminum wires of an existing photovoltaic system.

Claims

1. A copper-aluminum conversion harness, characterized in that: This includes copper-aluminum photovoltaic connectors, copper wires, and photovoltaic cable connectors; The copper-aluminum photovoltaic connector includes a body, a nut, a sealing inner plug, and a copper-aluminum tube. The two ends of the body are respectively provided with a nut and a sealing inner plug. The nut is threadedly connected to the body, the sealing inner plug is housed in the nut, and the copper-aluminum tube is housed in the body. One end of the copper wire is connected to the photovoltaic cable connector, and the other end passes through the nut and sealing plug of the copper-aluminum photovoltaic connector in sequence and is inserted into the copper tube of the copper-aluminum tube and crimped to connect with the copper tube. The nut and the main body of the copper-aluminum photovoltaic connector are threaded together, and the sealing plug is pressed inward to cover and clamp the copper wire.

2. The copper-aluminum conversion harness as described in claim 1, characterized in that: The photovoltaic cable connector is a male connector and / or a female connector.

3. The copper-aluminum conversion harness as described in claim 1, characterized in that: The main body has a first through hole that extends along the axial direction, and the two ends of the main body have external threads. The two ends of the first through hole are provided with an inner conical guide and an annular pressing part from the outside to the inside. The sealing inner plug has a second through hole that extends axially. The inner wall of the second through hole has several annular protrusions that are spaced apart. The outer wall of the sealing inner plug has an outer conical support portion and an outer conical guide portion at both ends of the axial direction, respectively. The taper of the outer conical support portion is greater than that of the outer conical guide portion. The nut has an axially penetrating internal thread hole and a third through hole, and the internal thread hole and the third through hole are connected by an inner spherical support portion. The outer conical support portion of the sealing inner plug abuts against the inner spherical support portion of the nut, and the outer conical guide portion of the sealing inner plug abuts against the inner conical guide portion and the annular press-fit portion of the main body.

4. The copper-aluminum conversion harness as described in claim 3, characterized in that: The end face, inner conical guide, annular press-fit part and inner hole of the main body are smoothly connected by curved surfaces.

5. The copper-aluminum conversion harness as described in claim 3, characterized in that: The middle area of ​​the first wire hole is provided with a limiting flange that protrudes radially inward. The copper-aluminum tube is formed by fixing copper tube and aluminum tube together axially. The outer diameter of the copper tube is smaller than the outer diameter of the aluminum tube. A limiting step is formed at the joint of the copper tube and the aluminum tube, and the limiting step abuts against the limiting flange.

6. The copper-aluminum conversion harness as described in claim 5, characterized in that: The copper-aluminum tube is formed by friction welding of copper and aluminum tubes.

7. The copper-aluminum conversion harness as described in claim 5, characterized in that: The copper-aluminum photovoltaic connector also includes a rubber plug, which seals the aluminum end of the copper-aluminum tube.

8. The copper-aluminum conversion harness as described in claim 5, characterized in that: The inner wall of the main body is provided with reinforcing ribs that protrude inward and are parallel to the axis, and the reinforcing ribs are connected to the limiting flange.

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