CN209843988U - High-voltage discharge appliance for coal mine - Google Patents

Abstract

A high-voltage discharge appliance for coal mine comprises a combined insulating rod, a combined conductive chuck and a connecting conductive wire, wherein the combined insulating rod is provided with an upper section and a lower section which are connected by a tee joint, one end of the upper section is connected with the other straight-through hole of the tee joint or a hole vertical to the straight-through hole, and the other end of the upper section is connected with the combined conductive chuck; the combined conductive chuck comprises a clamping groove type conductive chuck and a plug-in type conductive chuck, the plug-in type conductive chuck consists of a conductive rod and a cylindrical conductor, and the clamping groove type conductive chuck and the plug-in type conductive chuck are fixed together and connected with the end part of the upper section of the combined insulating rod; the connecting conductive wire consists of a common grounding conductive wire and three branch conductive wires. The device is compact in structure, convenient to carry, safe and convenient to operate, can realize reliable discharging in the process of overhauling high-voltage electrical equipment at different underground places of a coal mine, can effectively solve the potential safety hazard problem that the high-voltage electrical equipment is discharged and a short-circuit grounding wire is broken in field overhauling, and improves overhauling safety and working efficiency.

Description

High-voltage discharge appliance for coal mine

Technical Field

The utility model relates to a high-voltage electrical equipment overhauls and uses discharge tool.

Background

According to the safe operation regulation for high-voltage electric equipment maintenance, when the high-voltage electric equipment is maintained, the electric equipment can be maintained after power failure, electricity testing, discharging and short-circuit grounding wires are required. The device is limited by the installation space position of high-voltage electrical equipment in a coal mine, and when the electrical equipment is overhauled and the existing high-voltage discharge appliance in the market is used for discharging or making a short-circuit grounding wire, the problems that the electrical equipment cannot be reliably contacted and discharged and the short-circuit grounding anti-electric shock protection can be carried out on a binding post in a clamping mode exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: a high-voltage discharging tool for a coal mine is designed to solve the problem of potential safety hazards in discharging and short-circuit grounding wires during on-site maintenance of high-voltage electrical equipment.

Realize the utility model discloses the technical scheme that the purpose was taken is: the combined insulating rod is provided with an upper section and a lower section, one end of the lower section is provided with a grab handle, the other end of the lower section is connected with a tee joint, one end of the upper section is connected with another straight-through hole of the tee joint or a hole vertical to the straight-through hole, and the other end of the upper section is connected with the combined conductive chuck; the combined conductive chuck comprises a clamping groove type conductive chuck and a plug-in type conductive chuck, the plug-in type conductive chuck consists of a hollow cylindrical conductor combined by a conductive rod and a metal conductive sheet, and the clamping groove type conductive chuck and the plug-in type conductive chuck are fixed together and are connected to the end part of the upper section of the combined insulating rod through the conductive rod; the connecting conductor wire is composed of a common grounding conductor wire and three branch conductor wires, one end of each branch conductor wire is connected with one end of the common grounding conductor wire after being gathered, the other ends of the three branch conductor wires are connected with the combined conductive chuck, and the other ends of the common conductor wires are connected with a grounding electrode of equipment or a grounding bolt on a shell.

The clamping groove type conductive chuck is in an L-shaped plate shape, one end of the clamping groove type conductive chuck is provided with a mounting hole for fixing the branch conductive wire connection lug, the other end of the clamping groove type conductive chuck is provided with a mounting hole for connecting the conductive rod, and the end part outside the mounting hole is provided with a clamping groove.

A chamfer is arranged on the inner side of the clamping groove on the clamping groove type conductive clamping head.

Two ends of the cylindrical conductor are respectively provided with an annular locking spring.

The utility model has the advantages that: compact structure, convenient to carry, the operation is safe convenient, can realize reliably discharging when overhauing the operation to colliery high-voltage electrical equipment in different places in the pit, can effectively solve on-the-spot maintenance high-voltage electrical equipment and discharge, beat the potential safety hazard problem that the short circuit earth connection exists, improve maintenance security and work efficiency.

Drawings

FIG. 1 is a schematic view of the present invention; FIG. 2 is a schematic view of the present invention showing an L-shaped structure of the combined insulation rod when the upper section of the combined insulation rod is connected in the vertical hole of the three-way connector; FIG. 3 is a schematic view of a modular conductive chuck; FIG. 4 is a schematic view of a connecting conductive wire; FIG. 5 is a schematic view of an upper section of an insulating rod; FIG. 6, FIG. 7 and FIG. 8 are a front view, an attached view and a left view of the slot type conductive chuck, respectively; fig. 9 and 10 are a front view and a top view of the plug-in type conductive chuck, respectively; FIG. 11, FIG. 12 and FIG. 13 are a front view, an attached view and a left side view of the metal conductive sheet of the plug-in type conductive chuck, respectively; fig. 14 is a front elevational view, in full section, of the plug-in conductive clip sheath.

Detailed Description

The utility model discloses as shown in fig. 1, 2, including the combination insulator spindle, the electrically conductive chuck of combination (fig. 3), connect the conductor wire (fig. 4) triplex, the combination insulator spindle has upper and lower two sections, grab handle 1 is installed to 2 one ends of lower section, the other end has the outer silk and connects soon in a through hole of tee bend 3, upper section 4 one end has the outer silk, the other end tip has a silk hole (fig. 5) along the axis division, the one end of taking the outer silk is connected in another through hole of tee bend 3, constitute a style of calligraphy combination insulator spindle (as shown in fig. 1), the one end of taking the outer silk or connect in the hole perpendicular to through hole, constitute L type combination insulator spindle (as shown in fig. 2), the other end of upper section 4 connects the electrically conductive pole 14 on the electrically conductive chuck of combination (fig. 3) through the silk hole; the combined conductive chuck (figure 3) comprises a clamping groove type conductive chuck 6 and a plug-in type conductive chuck 8, wherein the plug-in type conductive chuck 8 consists of a conductive rod 14, the metal conductive sheet 13 (figure 11, 12, 13) makes up a hollow cylindrical electric conductor (figure 9, 10) and annular lock spring 12 to make up, make up the conductive chuck and all use the conductive metal material to process to form, the conductive chuck sheath 7 of the plug-in type is a thin-walled sleeve cup, process the mounting hole 16 (figure 14) on the cup bottom, the mounting hole 16 passes the conducting rod 14, the sheath can be fitted on the cylindrical electric conductor made up of metal conductive sheet 13 of the conductive chuck 8 of the plug-in type, make the cylindrical chuck keep upright and not slope, two annular lock springs 12 are installed at both ends of cylindrical electric conductor respectively, the plug-in type chuck 8 can be fitted on the terminal (or contact), under the effect of the annular lock spring 12, can make the chuck reliably contact with terminal; the clamping groove type conductive clamping head 6 is in an L-shaped plate shape (as shown in figures 6, 7 and 8), one end of the clamping groove type conductive clamping head is provided with a mounting hole 17 for fixing the branch conductive wire connection lug 11, the other end of the clamping groove type conductive clamping head is provided with a mounting hole 15 for connecting the conductive rod 14, the outer end part of the mounting hole 15 is provided with a clamping groove 19, and the inner side of the clamping groove 19 on the clamping groove type conductive clamping head is provided with a chamfer (as shown in figure 6) for facilitating mounting; the clamping groove type conductive chuck 6 is arranged on a conductive rod 14 of the plug-in type conductive chuck 8 through a mounting hole 15, the clamping groove type conductive chuck and the conductive rod are fixed together through a bolt 18 and are connected into a screw hole at the end part of the upper section 4 of the combined insulating rod through the conductive rod 14; the connecting conductor wire (figure 4) is composed of a common grounding conductor wire 10 and three branch conductor wires 9, one ends of the three branch conductor wires 9 are connected with one end of the common grounding conductor wire 10 after being gathered, the other ends of the three branch conductor wires are provided with wiring noses 11 which are respectively and reliably connected with the mounting holes 17 of the three clamping groove type conductive chucks by bolts, and the other end of the common conductor wire is also provided with the wiring noses 11 which are connected with a grounding electrode of equipment or a grounding bolt on a shell.

Use the utility model discloses the time, need be according to the concrete position and the space environmental condition comprehensive consideration of field device installation. For the wiring terminal (or contact) of the electrical equipment, which is in a horizontal arrangement state, the exposed length of the wiring terminal is long, and when the wiring terminal is overhauled in a place with a relatively wide space, a linear insulating rod (shown in figure 1) and a plug-in type conductive chuck 8 (shown in figures 9 and 10) can be preferentially adopted for discharging and short-circuit grounding wires; for electrical equipment with a short exposed length of the binding post, a clamping groove type conductive clamping head 6 (shown in figures 6, 7 and 8) can be used for discharging and short-circuiting a grounding wire. For the electric equipment, the binding posts (or contacts) are vertically arranged, the exposed length of the binding posts is long, and an L-shaped insulating rod (shown in figure 2) and a plug-in type conductive chuck 8 (shown in figures 9 and 10)) can be adopted for discharging and short-circuiting a ground wire; for the short exposed length of the binding post, a clamping groove type conductive clamping head 6 (shown in figures 6, 7 and 8) can be adopted for discharging and short-circuiting a grounding wire.

After the high-voltage electrical equipment for maintenance is powered off, hung with a power-off maintenance warning board and tested, the operation steps of discharging and short-circuit grounding wire are as follows:

1. the lower section 2 and the upper section 4 of the insulating rod are connected into a required straight line shape (figure 1) or an L shape (figure 2) through a tee joint 3.

2. The connection lug 11 of the common ground 10 to which the conductor wire (fig. 6) is connected is first pressed firmly against the main ground of the electrical apparatus to be serviced.

3. The handle 1 of the insulating rod is held by hand, and the combined conductive chuck is in reliable contact with the wiring terminals on the power supply side and the load side in sequence to discharge phase by phase.

4. After the discharge is finished, the three conductive chucks are respectively and reliably connected with the three binding posts on the power supply side (when the clamping groove type conductive chuck is used, the clamping groove 19 is reliably clamped on the binding post, if necessary, a nut is adopted for fixing, when the plug-in type conductive chuck is used, the chuck is reliably plugged on the binding post), and then the electrical equipment can be overhauled.

5. After the maintenance is finished, the three conductive chucks are taken down from the three binding posts on the power supply side respectively, and then the wiring lug 11 connected with the common grounding end 10 of the conductive wire (shown in figure 6) is detached from the main grounding electrode of the electrical equipment.

Claims (4)

1. A high-voltage discharge apparatus for coal mine is characterized in that: the combined insulating rod is provided with an upper section and a lower section, one end of the lower section is provided with a grab handle, the other end of the lower section is connected with a tee joint, one end of the upper section is connected with another straight-through hole of the tee joint or a hole vertical to the straight-through hole, and the other end of the upper section is connected with the combined conductive chuck; the combined conductive chuck comprises a clamping groove type conductive chuck and a plug-in type conductive chuck, the plug-in type conductive chuck consists of a hollow cylindrical conductor combined by a conductive rod and a metal conductive sheet, and the clamping groove type conductive chuck and the plug-in type conductive chuck are fixed together and are connected to the end part of the upper section of the combined insulating rod through the conductive rod; the connecting conductor wire is composed of a common grounding conductor wire and three branch conductor wires, one end of each branch conductor wire is connected with one end of the common grounding conductor wire after being gathered, the other ends of the three branch conductor wires are connected with the combined conductive chuck, and the other ends of the common conductor wires are connected with a grounding electrode of equipment or a grounding bolt on a shell.

2. The high-voltage discharge tool for coal mines according to claim 1, wherein: the clamping groove type conductive chuck is in an L-shaped plate shape, one end of the clamping groove type conductive chuck is provided with a mounting hole for fixing the branch conductive wire connection lug, the other end of the clamping groove type conductive chuck is provided with a mounting hole for connecting the conductive rod, and the end part outside the mounting hole is provided with a clamping groove.

3. The high-voltage discharge tool for coal mines according to claim 1, wherein: a chamfer is arranged on the inner side of the clamping groove on the clamping groove type conductive clamping head.

4. The high-voltage discharge tool for coal mines according to claim 1, wherein: two ends of the cylindrical conductor are respectively provided with an annular locking spring.