A method for installing a power distribution cable phase connection

Abstract

This invention discloses an installation method for phase-to-phase connection wires in power distribution cables, belonging to the field of cable testing equipment. It includes a connecting cable, terminal heads, and clamps, specifically comprising the following steps: terminal heads are installed at both ends of the connecting cable, and clamps are installed on the side of the terminal heads facing away from the connecting cable; the power distribution cable is connected to the clamps; the ends of the phase-to-phase connection wires are fixed together by the clamps, so that the terminal heads of the power distribution cable are connected to the terminal heads; pressure rings are installed on the clamps at both ends; pressure rods are installed on the pressure rings, and metal plates are installed at the bottom of the pressure rods. The pressure rods are pressed down, causing them to point downwards. Contact points A and B are respectively connected to the metal plates inside the clamps. Contact point A connects to the corresponding terminal head, and contact point B is pressed down against the bottom of the pressure rings of the power distribution cable, ensuring a reliable connection between contact points A and B. After the connection is completed, the corresponding tests can be performed. This invention solves the problem of electric shock risk in safe connection testing cables.

Description

Technical Field

[0001] This invention belongs to the field of cable testing equipment, and specifically relates to an installation method for phase-to-phase connection wires of power distribution cables. Background Technology

[0002] Before leaving the factory, power distribution cables must undergo on-site AC withstand voltage testing. Therefore, to ensure the safe and stable operation of the power system, withstand voltage testing is essential to understand the insulation characteristics of cables during installation completion, condition evaluation, and maintenance. However, currently, power distribution cables require separate pressure tests on each of the three phases. This presents several problems, including the risk of electric shock, partial discharge pulse attenuation, and lengthy testing times. Reference CN112086912A describes a phase-to-phase connection method for power distribution cables in live-line working areas, but this direct connection method still presents discharge issues. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention. This invention discloses a method for installing phase-to-phase connection wires in power distribution cables, including connecting cables, terminal heads, and wire clamps, specifically comprising the following steps:

[0004] Step 1: Install corresponding terminal heads at both ends of the connecting cable, and install wire clamps on the side of the terminal heads facing away from the connecting cable;

[0005] Step 2: Connect the power cable to the clamp;

[0006] Step 3: Secure the wire ends of the phase-to-phase connection wires with wire clamps, connecting the terminal head of the distribution cable to the wire end;

[0007] Step 4: Install pressure rings on the wire clamps at both ends; install pressure rods on the pressure rings, install metal plates on the bottom of the pressure rods, and set contact points A and B inside the wire clamps;

[0008] Contact point A is connected to the corresponding terminal head, and contact point B is connected to the power distribution cable;

[0009] Press the pressure rod down, causing the bottom of the pressure ring to press down, so that the bottom of the metal plate is reliably connected to contact point A and contact point B respectively. After the connection is completed, the corresponding test can be carried out.

[0010] Specifically, two sets of connecting posts are installed at the wire clamp to connect the connector to the connecting posts, achieving closure. Secondly, the top extends into the inner wall of the wire clamp, and a movable telescopic rod is installed at the upper end. A metal plate is installed at the bottom of the telescopic rod, which can move downwards to connect between contact point A and contact point B, thus realizing the transmission of the circuit.

[0011] In a further technical solution, in step four, the pressure ring includes a telescopic rod, the top of which is fitted with an insulating sleeve, and both ends of the pressure rod are respectively connected to end clamps.

[0012] In a further technical solution, the wire clamp includes a connecting cavity, which is L-shaped. A connecting post one and a connecting post two are respectively provided in the connecting cavity. The connecting post one is connected to the wire end of the terminal head, and the connecting post two is connected to the wire end of the power distribution cable.

[0013] All the clamps are C-shaped. The top of the first connecting post extends to the inner wall of the clamp as contact point A, and the top of the second connecting post extends to the upper inner wall of the clamp as contact point B.

[0014] In a further technical solution, a hinge seat is installed at the bottom of the pressure rod, a hinge plate is installed on the hinge seat, and a slot plate is installed at the bottom of the hinge plate, the slot plate being adapted to the pressure rod.

[0015] In a further technical solution, a positioning hole is installed on the hinge seat, and a return spring is installed in the positioning hole. One end of the return spring is fixedly connected to the positioning hole, and the other end of the return spring is fixed to the hinge plate. The hinge seat and hinge plate are installed on the pressure plate, and when pressed downwards, the bottom of the slot plate is engaged with the pressure plate. Then, the telescopic rods at both ends are pressed downwards to achieve effective installation and conduction.

[0016] In a further technical solution, the connecting cables are arranged in a "U" shape.

[0017] In a further technical solution, the terminal head is a movable terminal head, suitable for relative rotation with respect to the connecting cable.

[0018] Compared with the prior art, the present invention can achieve the following technical effects:

[0019] Compared with the prior art, this invention achieves connection switching by setting a movable, non-human-contact mechanism at the connection between the power distribution cable and the terminal head, aiming to reduce the risk of electric shock. Two sets of connecting posts are installed at the cable clamp to connect the connector to the connecting posts, enabling closure. A movable telescopic rod is installed at the top, extending into the inner wall of the cable clamp. A metal plate is installed at the bottom of the telescopic rod, which can move downwards to connect between contact points A and B, thus enabling circuit transmission. The top insulating sleeve effectively prevents electric shock. A hinge seat and hinge plate are installed on the pressure plate. When pressed downwards, the bottom of the slot plate engages with the pressure plate, and then the telescopic rods at both ends are pressed downwards, achieving effective installation and conduction. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 Top view of the installation of this invention;

[0022] Figure 2 This is a schematic diagram of the installation of the present invention (without the pressure rod installed);

[0023] Figure 3 This is a cross-sectional view of the wire clamp of the present invention;

[0024] Figure 4 This is a schematic diagram of the installation of the hinge plate and hinge seat of the present invention;

[0025] In the diagram: 1. Connecting cable; 2. Terminal head; 3. Cable clamp; 4. Pressure rod; 5. Telescopic rod; 6. Insulating sleeve; 7. Connecting cavity; 8. Connecting post one; 9. Connecting post two; 10. Power distribution cable; 11. Hinge plate; 12. Slot plate; 13. Metal plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] like Figures 1 to 4 As shown, this is one embodiment of the present invention, a method for installing a phase-to-phase connection wire of a power distribution cable, including a connecting cable 1, a terminal head 2, and a wire clamp 3, specifically comprising the following steps:

[0030] Step 1: Install corresponding terminal heads 2 at both ends of the connecting cable 1, and install wire clamps 3 on the side of the terminal head 2 facing away from the connecting cable 1;

[0031] Step 2: Connect the power distribution cable 10 to the clamp 3;

[0032] Step 3: The wire ends of the phase-to-phase connection wires are fixed with the three-phase clamps, so that the terminal 2 of the power distribution cable 10 is connected to the wire end;

[0033] Step 4: Pressure rings are installed on the wire clamps 3 at both ends; pressure rods 4 are installed on the pressure rings, and metal plates 13 are installed at the bottom of the pressure rods 4. Contact points A and B are provided inside the wire clamps 3.

[0034] Contact point A is connected to the corresponding terminal head 2, and contact point B is connected to the power distribution cable 10; the pressure rod 4 is pressed down, so that the bottom of the pressure ring is pressed down, so that the bottom of the metal plate 13 is reliably connected to contact point A and contact point B respectively. After the connection is completed, the corresponding test can be carried out.

[0035] like Figure 3 As shown, in step four, the pressure ring includes a telescopic rod 5, with an insulating sleeve 6 installed on the top of the telescopic rod 5. Both ends of the pressure rod 4 are connected to the two end clamps 3. Each clamp 3 includes a connecting cavity 7, which is L-shaped. A first connecting post 8 and a second connecting post 9 are respectively installed within the connecting cavity 7. The first connecting post 8 is connected to the wire end of the terminal head 2, and the second connecting post 9 is connected to the wire end of the power distribution cable 10. All clamps 3 are C-shaped. The top of the first connecting post 8 extends to the inner wall of the clamp 3, forming contact point A. The top of the second connecting post 9 extends to the upper contact point B on the inner wall of the clamp 3.

[0036] like Figure 1 and Figure 4 As shown, a hinge seat is installed at the bottom of the pressure rod 4, and a hinge plate 11 is installed on the hinge seat. A slot plate 12 is installed at the bottom of the hinge plate 11, and the slot plate 12 is adapted to the pressure rod 4. A positioning hole is installed on the hinge seat, and a return spring 14 is installed in the positioning hole. One end of the return spring 14 is fixedly connected to the positioning hole, and the other end of the return spring 14 is fixed to the hinge plate 11.

[0037] The connecting cable 1 is arranged in a "U" shape. The terminal head 2 is a movable end head, which is suitable for rotating relative to the connecting cable 1, allowing for a larger installation position.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method of installing a power cable phase-to-phase connection, characterized in that The utility model relates to a kind of terminal head connecting cable, including connecting cable (1), terminal head (2) and clamp (3), specifically comprising the following steps: Step one: the both ends of the connecting cable (1) are installed with corresponding terminal head (2) respectively, the side of the terminal head (2) opposite to the connecting cable (1) is installed with clamp (3); Step two: power distribution cable (10) is connected with clamp (3); Step three: the line head of phase-to-phase connecting line is fixed by clamp (3), so that the terminal head (2) of power distribution cable (10) is connected on the line head; Step four: the clamp (3) on both ends is installed with compression ring part; the compression ring part is installed with pressure rod (4), the bottom of the pressure rod (4) is installed with metal plate (13), contact point A and contact point B are arranged in the clamp (3); Contact point A is connected with corresponding terminal head (2), and contact point B is connected with power distribution cable (10); The pressure rod (4) is pressed downward, so that the bottom of the compression ring part is pressed downward, so that the bottom of the metal plate (13) is reliably connected with contact point A and contact point B, and after connection is completed, corresponding test can be carried out.

2. A method of installing a power distribution cable phase connection according to claim 1, characterised in that In step four, the compression ring part includes telescopic rod (5), the top of the telescopic rod (5) is installed with insulating sleeve (6), and the both ends of the pressure rod (4) are connected on the clamp (3) on both ends.

3. A method of installing a power cable phase-to-phase connection according to claim 2, characterized in that, The clamp (3) includes connecting cavity (7), the connecting cavity (7) is "L" type, connecting column one (8) and connecting column two (9) are arranged in the connecting cavity (7) respectively, the line head of the terminal head (2) is connected with the connecting column one (8), and the line head of the power distribution cable (10) is connected with the connecting column two (9); The clamp (3) is C-shaped, the top of the connecting column one (8) is contact point A to the inner wall of the clamp (3), and the top of the connecting column two (9) extends to the inner wall of the clamp (3) and is contact point B.

4. The installation method of a power distribution cable phase connection line according to claim 2, characterized in that, The bottom of the pressure rod (4) is installed with hinged seat, the hinged seat is installed with hinged plate (11), the bottom of the hinged plate (11) is installed with clamping groove plate (12), and the clamping groove plate (12) is matched with the pressure rod (4).

5. A method of installing a power cable phase connection according to claim 4, characterised in that, The hinged seat is installed with positioning hole, the positioning hole is installed with reset spring (14), one end of the reset spring (14) is fixedly connected with the positioning hole, and the other end of the reset spring (14) is fixed with the hinged plate (11).

6. The method of installing a power distribution cable phase connection of claim 1, wherein, The connecting cable (1) is "U" shape distribution.

7. The method of installing a power distribution cable phase connection of claim 1, wherein: The terminal head (2) is movable end, suitable for relative rotation relative to connecting cable (1).

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