A cable drainage grounding device for power system

Abstract

The present invention relates to the technical field of puncture wire clamps, and discloses a cable drainage grounding device for an electric power system, comprising a puncture wire clamp, comprising an upper and lower shell, a pair of upper and lower connectors arranged in the shell, used to connect a grounding ring and a main line, the connector comprising a half ring one clamped on the grounding ring, a half ring two clamped on the main line, the half ring one and the half ring two are connected by a connecting plate, and also comprising a pair of puncture half rings clamped on the main line, a plurality of puncture needles arranged on the puncture half ring, and a puncture hole is arranged on the half ring two at a position corresponding to the puncture needle; the puncture needle, the connector, and the puncture half ring are all made of conductive materials. The cable drainage grounding device for an electric power system, after the puncture needle passes through the puncture hole, it obliquely penetrates into the insulation layer of the main line, and remains between the insulation layer and the conductor of the main line, so as to realize the electrical connection between the main line and the grounding ring, the puncture needle has a large contact area with the conductor, and has good stability, so that the state of grounding and drainage of the main line through the puncture wire clamp is stable.

Description

Technical Field

[0001] The invention relates to the technical field of puncture wire clamps, and in particular to a cable drainage grounding device for a power system. Background Art

[0002] The insulated piercing wire clamp is a new way of cable branching. When the cable needs to be branched or connected, insert the cable branch line terminal into the waterproof terminal cap. After determining the branch position of the main line, use a socket wrench to tighten the torque nut on the wire clamp. During the process, the contact blade will pierce the cable insulation layer and contact the conductor. The sealing ring presses around the pierced position of the cable, and the silicone grease in the shell overflows. When the torque reaches the set value, the nut torque mechanism falls off, the main line and the branch line are connected, and the waterproof performance and electrical effect meet the parameters required by the standard. The connection between the trunk cable and the branch cable is achieved through a metal thorn in the conductor of the insulated piercing wire clamp. This connection method has a small contact area, poor stability, and large contact resistance, which can easily cause poor contact, resulting in heating of the wire clamp and the cable. The tip of the piercing blade is prone to form a notch or melting mark, which can easily cause poor contact or fire.

[0003] Other existing puncture wire clamps cannot solve the above problems well, such as:

[0004] A surface-contact puncture wire clamp is disclosed in the patent with patent publication number CN104362446A, comprising an upper clamp body and a lower clamp body, characterized in that: the upper clamp body is connected to the lower clamp body by bolts; grooves are arranged at corresponding positions of the upper clamp body and the lower clamp body; a clamping bolt is arranged on the upper clamp body, and the clamping bolt is threadedly connected to the upper clamp body; the lower end of the clamping bolt abuts against the puncture seat; there are 3 cone heads, namely, side cone heads on both sides and a positive cone head in the middle; the height of the side cone head is higher than that of the positive cone head; the side cone head is arranged obliquely with respect to the puncture seat.

[0005] In this invention, the side cone heads on both sides first pierce the insulating layer, and as the clamping bolt is tightened, they tilt to both sides, so that the contact between the side cone heads and the wire becomes surface contact. After the clamping bolt is further tightened, the front cone head makes point contact with the wire, and the two side cone heads further expand the contact area. The disadvantage is that it takes a lot of force for the cone head to penetrate the insulating layer of the cable, and the penetration of the cone head into the insulating layer will cause a large area of ​​damage to the insulating layer, affecting the protective effect of the insulating layer.

[0006] A piercing wire clamp is disclosed in the patent with patent publication number CN118137173A, including an upper shell and a lower shell, wherein piercing bodies are arranged in the first wire placement groove and the second wire placement groove, wherein the first piercing body and the second piercing body have claws at one end facing the incoming wire side for locking the wire under the action of rotation, wherein the claws are distributed in the circumferential direction of the first piercing body and the second piercing body, wherein sharp thorns are arranged on the claws for piercing the wire, and the piercing wire clamp also includes a driving member for driving the claws to pierce the wire, wherein the driving member enters into the first wire placement groove and the second wire placement groove, so that the claws approach each other under the action of rotation, and drive the sharp thorns to pierce the wire to realize power supply.

[0007] In this invention, the piercing body pierces the insulation layer of the wire and contacts the conductor point to achieve electrical connection. However, there are also problems such as small contact area between the piercing body and the conductor, poor stability, and large contact resistance, which can easily lead to poor contact, causing heating of the wire clamp and cable, and the tip of the piercing blade to easily form a notch or melt. Summary of the invention

[0008] In view of the above problems in the prior art, a cable drainage grounding device for a power system is proposed.

[0009] The present application provides a cable drainage grounding device for an electric power system, the purpose of which is to provide a piercing wire clamp with a large contact area between the piercing body and the conductor and good stability, so that the main line can be grounded and drained stably through the piercing wire clamp.

[0010] The technical solution of the present invention is: a cable drainage grounding device for an electric power system, comprising a puncture wire clamp and a grounding rod, wherein the puncture wire clamp is connected to a main line, and further comprising a grounding ring, which is arranged on the puncture wire clamp and is used to connect to the grounding rod and a branch line, and an exposed area is arranged on the grounding ring; further comprising a drainage wire clamp, which is arranged in the exposed area of ​​the grounding ring and is used to connect the branch line, the puncture wire clamp comprises a shell separated from upper and lower parts, and a pair of upper and lower connectors arranged in the shell and used to connect the grounding ring and the main line, the connector comprises a semi-ring 1 engaged with the grounding ring and a semi-ring 2 engaged with the main line, the semi-ring 1 and the semi-ring 2 are connected through a connecting plate, and further comprising a pair of puncture semi-rings engaged with the main line, and a plurality of puncture needles arranged on the puncture semi-rings, the angle between the puncture needle and the axis of the main line is 5°-10°, and a puncture hole is arranged on the semi-ring 2 at a location corresponding to the puncture needle; the puncture needle, the connector and the puncture semi-ring are all made of conductive materials;

[0011] In the initial state, the puncture half ring is not in contact with the main line. As the puncture half ring approaches half ring two, the puncture needle passes through the puncture hole and then obliquely penetrates into the insulation layer of the main line, remaining between the insulation layer and the conductor of the main line. When the puncture half ring is in contact with half ring two, the puncture half ring is in contact with the main line. At this time, the main line and the grounding ring are electrically connected.

[0012] By adopting the above scheme, multiple puncture needles are obliquely inserted into the insulation layer and the conductor of the main line, so that the puncture needles are in contact with the conductor line, and then the main line and the grounding ring are electrically connected through the puncture half ring and the connecting piece. In this connection mode, the puncture needles are squeezed by the insulation layer and are in close contact with the conductor for a long time. The contact area between the multiple puncture needles and the conductor is large, the stability is good, the contact resistance is small, and it is not easy to cause poor contact.

[0013] Furthermore, the puncture wire clamp also includes a puncture assembly disposed in the housing, which is used to drive the puncture needle to puncture the insulation layer of the main wire;

[0014] The piercing assembly includes a bolt vertically arranged in the shell, a pair of sliding rods arranged in the lower shell, a driving block slidably arranged on the sliding rod, a cavity penetrating the driving block from top to bottom, a square block slidably arranged in the cavity, a screw hole arranged on the square block, the square block is threadedly connected with the bolt, an oblique groove penetrating the two sides of the driving block, a slider arranged on the two sides of the square block, the slider slides in the oblique groove, and also includes a U-shaped frame, a clamping groove arranged on the U-shaped frame, which is used to clamp the two ends of a pair of piercing semi-rings, and the U-shaped frame is connected to the driving block through a T-shaped rod.

[0015] By adopting the above scheme, the upper and lower shells are correspondingly engaged on the main line and the grounding ring through the piercing component, and then the bolts are rotated. The bolts drive the square block to move upward, and the slider on the square block squeezes the inclined groove, so that the driving block drives the U-shaped frame to move toward the connecting piece. The U-shaped frame clamps a pair of piercing semi-rings and moves synchronously toward semi-ring two. Finally, the piercing semi-rings are close to semi-ring two, and the piercing needle pierces between the insulation layer and the conductor of the main line, and the main line and the grounding ring are electrically connected.

[0016] Furthermore, the puncture wire clamp also includes a locking assembly for locking the upper and lower shell parts;

[0017] The locking assembly includes a hook arranged on one side of the upper shell, a hook eye arranged on the same side of the lower shell as the hook, and a locking plate arranged on the opposite side of the upper shell as the hook. The locking plate points into the shell, and a locking groove is provided at a position corresponding to the driving block and the locking plate.

[0018] By adopting the above scheme, a locking assembly is set up, and the hook and the eye are first plugged into each other to connect the upper shell with one side of the lower shell. During the process of rotating the bolt, the drive block moves toward the locking plate, and the locking plate is locked into the locking groove to achieve the connection between the upper shell and the other side of the lower shell.

[0019] Furthermore, the upper surface of the clamping plate is a curved surface.

[0020] By adopting the above solution and providing the arc surface, the pressing force on the clamping plate is continuously increased during the movement of the driving block toward the clamping plate, so that the upper shell and the lower shell are tightly connected together.

[0021] Furthermore, a torque nut is provided at the upper end of the bolt.

[0022] By adopting the above scheme, a torque nut is provided. When the torque nut is rotated, after the piercing half ring approaches and completely clings to the second half ring, the torque of the rotating torque nut increases, and the torque nut falls off when the rotation continues.

[0023] Furthermore, a pair of support plates are provided in the shell for supporting a pair of the connecting members.

[0024] By adopting the above solution, a pair of connecting members are fixed in the shell by providing a support plate.

[0025] Furthermore, sealing rings are provided at the connections between the shell, the main line and the grounding ring.

[0026] By adopting the above solution, the rainproof effect is improved by providing a sealing ring.

[0027] Furthermore, an arc-shaped plate is provided on the half ring 1 to increase the contact area between the half ring 1 and the grounding ring.

[0028] By adopting the above solution, the arc plate is provided to increase the contact area between the half ring and the grounding ring, thereby improving the conductivity between the main line and the grounding ring.

[0029] Beneficial effects of the present invention:

[0030] Multiple puncture needles are inserted obliquely between the insulation layer and the conductor of the main line to make the puncture needles contact the conductor line, and then the main line and the grounding ring are electrically connected through the puncture half ring and the connector. In this connection method, the puncture needles are squeezed by the insulation layer and are in close contact with the conductor for a long time. The contact area between the multiple puncture needles and the conductor is large, the stability is good, the contact resistance is small, and it is not easy to cause poor contact.

[0031] Through the piercing component, the upper and lower shells are correspondingly engaged on the main line and the grounding ring, and then the bolts are rotated. The bolts drive the square block to move upward, and the slider on the square block squeezes the inclined groove, so that the driving block drives the U-shaped frame to move toward the connecting piece. The U-shaped frame clamps a pair of piercing semi-rings and moves synchronously toward the semi-ring two. Finally, the piercing semi-rings are close to the semi-ring two, and the piercing needle pierces between the insulation layer and the conductor of the main line, so that the main line and the grounding ring are electrically connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of a cable drainage grounding device for a power system according to the present invention;

[0033] Figure 2 An exploded view of the cable drainage grounding device for a power system according to the present invention;

[0034] Figure 3 A stereoscopic diagram of a piercing wire clamp in a cable drainage grounding device for an electric power system according to the present invention;

[0035] Figure 4 It is a top view of the piercing wire clamp in the cable drainage grounding device for the power system of the present invention;

[0036] Figure 5 For the present invention Figure 4 Sectional view at AA;

[0037] Figure 6 It is an exploded view of the piercing wire clamp in the cable drainage grounding device used in the power system of the present invention;

[0038] Figure 7 A stereoscopic diagram of a piercing component in a cable drainage grounding device for an electric power system according to the present invention;

[0039] Figure 8 It is a cross-sectional view of a piercing component in a cable drainage grounding device for an electric power system according to the present invention;

[0040] Fig. 9 A diagram showing the position of connectors in a cable drainage grounding device for an electric power system according to the present invention;

[0041] Fig.10 The present invention is a diagram showing the process of a puncture needle piercing into a main line in a cable drainage grounding device for an electric power system.

[0042] In the figure:

[0043] 1. Piercing wire clamp; 2. Grounding rod; 3. Main line; 4. Grounding ring; 5. Branch line; 6. Exposed area; 7. Drainage wire clamp; 8. Shell; 9. Connector; 10. Half ring one; 11. Half ring two; 12. Connecting plate; 13. Piercing half ring; 14. Piercing needle; 15. Piercing hole; 16. Bolt; 17. Sliding rod; 18. Driving block; 19. Cavity; 20. Square block; 21. Oblique groove; 22. Sliding block; 23. U-shaped frame; 24. Clamping groove; 25. T-shaped rod; 26. Hook; 27. Eye; 28. Clamping plate; 29. ​​Clamping groove; 30. Torque nut; 31. Support plate; 32. Sealing ring; 33. Arc plate; 34. Upper shell; 35. Lower shell. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] Example, see Figure 1-Figure 10, as an embodiment of the present invention, a cable drainage grounding device for an electric power system is provided, comprising a puncture wire clamp 1 and a grounding rod 2, the puncture wire clamp 1 is connected to a main line 3, and also comprises a grounding ring 4, which is arranged on the puncture wire clamp 1 and is used to connect with the grounding rod 2 and the branch line 5, and an exposed area 6 is arranged on the grounding ring 4; it also comprises a drainage wire clamp 7, which is arranged in the exposed area 6 of the grounding ring 4 and is used to connect the branch line 5, the puncture wire clamp 1 comprises a shell 8 separated from each other, and a pair of upper and lower spliced ​​connectors 9 arranged in the shell 8, which are used to connect the grounding ring 4 and the main line 3, the connector 9 comprises a semi-ring 10 engaged on the grounding ring 4, a semi-ring 2 11 engaged on the main line 3, the semi-ring 10 and the semi-ring 2 11 are connected through a connecting plate 12, and also comprises a pair of puncture semi-rings 13 engaged on the main line 3, and a plurality of puncture needles 14 arranged on the puncture semi-ring 13, the puncture needles 14 are axially connected to the main line 3 The angle between the lines is 10°, and a puncture hole 15 is provided on the half ring 11 at a position corresponding to the puncture needle 14; the puncture needle 14, the connector 9, and the puncture half ring 13 are all made of conductive materials; in the initial state, the puncture half ring 13 is not in contact with the main line 3, and as the puncture half ring 13 approaches the half ring 11, the puncture needle 14 passes through the puncture hole 15 and then obliquely penetrates into the insulation layer of the main line 3, remaining between the insulation layer and the conductor of the main line 3, and when the puncture half ring 13 is in close contact with the half ring 11, the puncture half ring 13 is in close contact with the main line 3, and at this time, the main line 3 and the grounding ring 4 are electrically connected.

[0046] Specifically, when in use, first install the piercing wire clamp 1 on the main cable 3. After the piercing wire clamp 1 is installed on the cable, then install the grounding rod 2 on the exposed area 6 on one side of the grounding ring 4, and ground it through the cooperation of the conductive exposed area 6 and the grounding rod 2. Then place the drainage wire clamp 7 on the other side of the exposed area 6 on the grounding ring 4, and fix the drainage wire clamp 7 on the grounding ring 4; after the connecting end of the branch line 5 is peeled off to expose the conductor, it is inserted into the drainage wire clamp 7 and fixed, so that the branch line 5 can be fixed, and the branch line 5 is mutually conductively connected with the grounding ring 4, thereby realizing the branch connection of the branch line 5 of the cable, and at the same time achieving the effect of conductive grounding, which is highly practical and improves the practical performance of the device.

[0047] Two groups of puncture needles 14 are obliquely arranged on each puncture half ring 13. When the two puncture half rings 13 are assembled into a ring shape, four groups of puncture needles 14 are equidistantly distributed on the ring. The number of puncture holes 15 corresponds to the puncture needles 14. The puncture holes 15 are used to keep the puncture needles 14 in an oblique state to pierce the insulating layer of the main line 3. Since the top of the puncture needle 14 is sharp, it is easy to penetrate the insulating layer of the main line 3. After the puncture needle 14 contacts the conductor, the puncture needle 14 cannot penetrate due to the hardness of the conductor. The puncture needle 14 penetrates deep into the gap between the conductor and the insulating layer and produces a slight deformation. The wrapping of the insulating layer makes the puncture needle 14 close to the conductor, resulting in good conductive performance.

[0048] The multiple puncture needles 14 are obliquely inserted into the space between the insulation layer of the main line 3 and the conductor, so that the puncture needles 14 are in contact with the conductor line, and then the main line 3 and the grounding ring 4 are electrically connected through the puncture half ring 13 and the connector 9. In this connection mode, the puncture needles 14 are squeezed by the insulation layer and are in close contact with the conductor for a long time. The multiple puncture needles 14 have a large contact area with the conductor, good stability, and low contact resistance, which is not easy to cause poor contact.

[0049] Reference Figure 5-Figure 8 The puncture wire clamp 1 also includes a puncture assembly arranged in the housing 8, which is used to drive the puncture needle 14 to puncture the insulating layer of the main line 3; the puncture assembly includes a bolt 16 vertically arranged in the housing 8, a pair of sliding rods 17 arranged in the lower housing 35, a driving block 18 slidably arranged on the sliding rod 17, a cavity 19 penetrating the driving block 18 from top to bottom, a square block 20 slidably arranged in the cavity 19, and a screw hole arranged on the square block 20, the square block 20 is threadedly connected with the bolt 16, and penetrates the oblique groove 21 arranged on both sides of the driving block 18, and a slider 22 arranged on both sides of the square block 20, and the slider 22 slides in the oblique groove 21, and also includes a U-shaped frame 23, and a clamping groove 24 arranged on the U-shaped frame 23, which is used to clamp the two ends of a pair of puncture semi-rings 13, and the U-shaped frame 23 is connected to the driving block 18 through a T-shaped rod 25.

[0050] Specifically, the bolt 16 passes through the cavity 19 on the driving block 18 and is connected with the screw hole on the square block 20. Since the sliders 22 on both sides of the square block 20 slide in the inclined groove 21, the square block 20 is restricted from rotating. In the process of rotating the bolt 16, the direction block moves upward, driving the sliders 22 on both sides to squeeze the inclined groove 21. Since the driving block 18 is restricted to slide on a pair of sliding rods, the sliders 22 squeeze the inclined groove 21 to drive the driving block 18 to slide horizontally. The sliding direction is the direction in which the U-shaped frame 23 approaches the connecting piece 9. The U-shaped frame 23 clamps a pair of puncture semi-rings 13 and moves synchronously toward the semi-ring second 11. During this process, the pair of puncture semi-rings 13 approach each other. After the puncture semi-ring 13 is close to the semi-ring second 11, the pair of puncture semi-rings 13 are also pieced together into a complete circular ring.

[0051] Through the piercing assembly, the upper and lower shells 8 are correspondingly engaged on the main line 3 and the grounding ring 4, and then the bolt 16 is rotated. The bolt 16 drives the square block 20 to move upward, and the slider 22 on the square block 20 squeezes the inclined groove 21, so that the driving block 18 drives the U-shaped frame 23 to move toward the direction close to the connecting piece 9. The U-shaped frame 23 clamps a pair of puncture semi-rings 13 and moves synchronously toward the semi-ring second 11. Finally, the puncture semi-ring 13 is close to the semi-ring second 11, and the puncture needle 14 pierces between the insulation layer and the conductor of the main line 3, and the main line 3 and the grounding ring 4 are electrically connected.

[0052] Reference Figure 5-Figure 6The puncture wire clamp 1 also includes a locking assembly for locking the upper and lower shells 8; the locking assembly includes a hook 26 arranged on one side of the upper shell 34, a hook eye 27 arranged on the same side of the lower shell 35 as the hook 26, and a locking plate 28 arranged on the opposite side of the upper shell 34 as the hook 26. The locking plate 28 points to the inside of the shell 8, and a locking groove 29 is provided at a position corresponding to the driving block 18 and the locking plate 28.

[0053] By setting up a locking assembly, first plug the hook 26 into the eye 27 to connect the upper shell 34 with one side of the lower shell 35. During the process of rotating the bolt 16, the drive block 18 moves toward the locking plate 28, and the locking plate 28 is locked into the locking groove 29 to achieve the connection between the upper shell 34 and the other side of the lower shell 35.

[0054] Reference Figure 5 The upper surface of the engaging plate 28 is an arc surface.

[0055] By providing the arc surface, the pressing force on the locking plate 28 is continuously increased during the movement of the driving block 18 toward the locking plate 28 , so that the upper shell 34 and the lower shell 35 are tightly connected together.

[0056] Reference Figure 3 A torque nut 30 is provided at the upper end of the bolt 16.

[0057] By setting the torque nut 30, when the torque nut 30 is rotated, after the piercing half ring 13 is close to and completely close to the half ring 11, the torque of the rotating torque nut 30 increases, and the torque nut 30 falls off when it is continuously rotated.

[0058] Reference Figure 5 A pair of supporting plates 31 are provided in the shell 8 for supporting a pair of connecting members 9 .

[0059] By providing the support plate 31 , the pair of connecting members 9 are fixed in the housing 8 .

[0060] Reference Figure 3 Sealing rings 32 are provided at the connections between the shell 8, the main line 3 and the grounding ring 4.

[0061] The sealing ring 32 is provided to improve the rainproof effect.

[0062] Reference Fig. 9 An arc plate 33 is provided on the half ring 10 to increase the contact area between the half ring 10 and the grounding ring 4.

[0063] By providing the arc plate 33, the contact area between the half ring 10 and the grounding ring 4 is increased, thereby improving the conductivity between the main line 3 and the grounding ring 4.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cable drainage grounding device for an electric power system, comprising a piercing wire clamp (1) and a grounding rod (2), wherein the piercing wire clamp (1) is connected to a main line (3), and further comprising a grounding ring (4) arranged on the piercing wire clamp (1) and used to connect to the grounding rod (2) and a branch line (5), wherein the grounding ring (4) is provided with an exposed area (6); and further comprising a drainage wire clamp (7) arranged on the exposed area (6) of the grounding ring (4) and used to connect to the branch line (5), characterized in that: The puncture wire clamp (1) comprises a housing (8) separated from each other, a pair of upper and lower connecting members (9) arranged in the housing (8) and assembled together, and used to connect the grounding ring (4) and the main line (3), the connecting member (9) comprising a half ring (10) engaged with the grounding ring (4), and a half ring (11) engaged with the main line (3), the half ring (10) and the half ring (11) being connected via a connecting plate (12), and further comprising a pair of puncture half rings (13) engaged with the main line (3), and a plurality of puncture needles (14) arranged on the puncture half rings (13), wherein the angle between the puncture needles (14) and the axis of the main line (3) is 5°-10°, and a puncture hole (15) is arranged on the half ring (11) at a position corresponding to the puncture needle (14); the puncture needle (14), the connecting member (9), and the puncture half ring (13) are all made of conductive materials; In the initial state, the puncture half ring (13) is not in contact with the main line (3). As the puncture half ring (13) approaches the second half ring (11), the puncture needle (14) passes through the puncture hole (15) and then obliquely penetrates into the insulation layer of the main line (3), remaining between the insulation layer and the conductor of the main line (3). When the puncture half ring (13) is in contact with the second half ring (11), the puncture half ring (13) is in contact with the main line (3), and at this time, the main line (3) and the grounding ring (4) are electrically connected.

2. The cable drainage grounding device for power system according to claim 1, characterized in that: The puncture wire clamp (1) further comprises a puncture assembly arranged in the housing (8) and used for driving the puncture needle (14) to puncture the insulation layer of the main wire (3); The piercing assembly comprises a bolt (16) vertically arranged in the housing (8), a pair of sliding rods (17) arranged in the lower housing (35), a driving block (18) slidably arranged on the sliding rod (17), a cavity (19) penetrating the driving block (18) from top to bottom, a square block (20) slidably arranged in the cavity (19), a screw hole arranged on the square block (20), the square block (20) being threadedly connected to the bolt (16), an oblique groove (21) penetrating the driving block (18) on both sides, a slider (22) arranged on both sides of the square block (20), the slider (22) sliding in the oblique groove (21), and a U-shaped frame (23), a clamping groove (24) arranged on the U-shaped frame (23), used for clamping the two ends of the pair of piercing half rings (13), the U-shaped frame (23) being connected to the driving block (18) through a T-shaped rod (25).

3. The cable drainage grounding device for a power system according to claim 2, characterized in that: The puncture wire clamp (1) further comprises a locking assembly for locking the upper and lower housing parts (8); The locking assembly comprises a hook (26) arranged on one side of the upper shell (34), a hook eye (27) arranged on the same side of the lower shell (35) as the hook (26), and a locking plate (28) arranged on the opposite side of the upper shell (34) from the hook (26), wherein the locking plate (28) points into the shell (8), and a locking groove (29) is provided at a position of the driving block (18) corresponding to the locking plate (28).

4. The cable drainage grounding device for power system according to claim 3, characterized in that: The upper surface of the clamping plate (28) is a curved surface.

5. The cable drainage grounding device for power system according to claim 2, characterized in that: A torque nut (30) is provided at the upper end of the bolt (16).

6. The cable drainage grounding device for a power system according to claim 1, characterized in that: A pair of support plates (31) are provided in the housing (8) and are used to support a pair of connecting members (9).

7. The cable drainage grounding device for a power system according to claim 1, characterized in that: Sealing rings (32) are provided at the connection points between the housing (8), the main line (3) and the grounding ring (4).

8. The cable drainage grounding device for a power system according to claim 1, characterized in that: An arc-shaped plate (33) is provided on the half ring (10) for increasing the contact area between the half ring (10) and the grounding ring (4).

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