CN207651696U - High-voltage cable joint ground wire electrification prosthetic device - Google Patents
High-voltage cable joint ground wire electrification prosthetic device Download PDFInfo
- Publication number
- CN207651696U CN207651696U CN201820058210.XU CN201820058210U CN207651696U CN 207651696 U CN207651696 U CN 207651696U CN 201820058210 U CN201820058210 U CN 201820058210U CN 207651696 U CN207651696 U CN 207651696U
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- pricker
- cable
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- connecting wire
- prosthetic device
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Abstract
The utility model discloses high-voltage cable joints to be grounded electrification prosthetic device, including being grounded needling device, the driving device driving of the ground connection needling device is moved positioned at the pricker of its driving portion to its clamping part, it is provided with earthed system between the pricker and ground connection, the earthed system includes digital display RC divider, high-pressure vacuum contactor and connecting wire, one end is electrically connected by connecting wire with pricker after the divider and contactor parallel connection, other end ground connection；One end far from pricker is provided with insulating bar on ground connection needling device, and the axis of the insulating bar is parallel to the axis of pricker, and one end is connect with hydraulic chamber；The utility model overcomes the harm hidden danger for the electrical discharge arc that will appear when ground connection, avoids that operating personnel are burnt, relevant device is burnt and the generation of fire；Coaxial ground cable voltage-to-ground value can also be monitored in real time, to ensure the safety of staff.
Description
Technical field
The utility model is related to field of cables, and in particular to high-voltage cable joint ground wire electrification prosthetic device.
Background technology
The metal sheath of domestic 110kV, 220kV single-core cable generally uses cross interconnected two sides earth or single-end earthed
The method of operation.Cable metal sheath only has tens volts of induced voltage over the ground under normal circumstances, once but earthed system by broken
Bad, metal sheath voltage-to-ground will be raised to the numerical value of danger close.Induced voltage is excessively high not only to endanger personal safety, can also make
Puncture at insulating layer, or even oversheath insulation can be punctured or cause cable run interruption of service.
When the cross interconnected line of high-tension cable is stolen and after oversheath loses ground connection completely, the suspension on cable metal sheath
Voltage will rise on cable jacket industrial frequency withstand voltage value feasible value, and in this case, suspended voltage will lead to oversheath
Breakdown or sheath protector is burnt.
High-voltage cable joint ground wire is overlapped by the way of the reparation that has a power failure, subsidiary economic damage will be further resulted in
It loses.And to realize high-voltage cable joint ground wire electrification repair, it is necessary to first the cable connector being destroyed be grounded interim
Reliable ground, allow dangerous suspension high-potential be reduced to can safety work ground potential.
If cable cannot achieve effective good earth, long-term electric discharge is had at the earth point of cable and is existed, or
Suspended voltage is climbed through external electrode to be electrically communicated on nearest metallic support or fixed gold utensil, is discharged.And possibility of discharging for a long time
Lead to fire, and then power grid heavy economic losses can be caused.
In existing high-tension cable electrification repair, is fixed using hydraulic tongs and be grounded impaired cable, mode of operation
For：The clamping part of hydraulic tongs is fixed into cable, the operating handle of hydraulic tongs is then shaken, makes the driving portion (piston) of hydraulic tongs
It moves ahead, until the pricker on piston is inserted into the core wire of cable, to carry out being directly grounded operation to cable.
High-tension cable is carried out by this electrification prosthetic device and charges repair, although the suspension electricity after ground connection on cable
Pressure can disappear, but being directly grounded for cable metal sheath higher suspension current potential will appear electrical discharge arc, generate the unreasonable of electric arc
Ground connection moment can cause serious threat to the personal safety of operating personnel, the operating personnel that can burn, scaling loss relevant device, very
To generation fire, the prosthetic device of this restorative procedure and use cannot achieve the reliable overlap joint of cable.Simultaneously in ground connection
And during overlap joint, the voltage of coaxial ground cable is not detected, staff can not understand its voltage in time
Value has great security risk.
Utility model content
The utility model aim is that providing high-voltage cable joint ground wire charges prosthetic device, solves existing high-voltage electricity
In cable tie electricity repair, cable is directly grounded the problem of will appear electrical discharge arc.Therefore it is high to design offer for the utility model
Piezoelectricity cable joint earth strap electricity prosthetic device, on the basis of using headstock for hooked hydraulic tongs, setting associated components,
There is electrical discharge arc in structure when preventing cable grounding.
The high-voltage cable joint ground wire electrification prosthetic device of the utility model design, prosthetic device are to be repaired for making
The floating potential of high-tension cable drops to ground potential, and makes cable reliable ground to be repaired, prevents from generating spark when ground connection, and not
It interferes by the repair of cut end, and ensures personal safety of the service personnel in charging repair process.Meanwhile the utility model
Electrification repair and be primarily directed to the stolen situation of cable grounding line and cross interconnected line.Stealer is mainly close to cable
Ground wire or cross interconnected line are cut in the position of connector, and the section left after being destroyed on cable has higher suspension electricity
Position.
The utility model is achieved through the following technical solutions：
High-voltage cable joint ground wire electrification prosthetic device, including ground connection needling device, the drive of the ground connection needling device
Dynamic device driving is moved positioned at the pricker of its driving portion to its clamping part, and ground connection system is provided between the pricker and ground connection
System, the earthed system include digital display RC divider, high-pressure vacuum contactor and connecting wire, the divider and contactor
One end is electrically connected by connecting wire with pricker after parallel connection, other end ground connection；Far from pricker on ground connection needling device
One end is provided with insulating bar, and the axis of the insulating bar is parallel to the axis of pricker, and one end is connect with hydraulic chamber；
Clamping part fixes cable coaxial ground line to be repaired, and driving device drives pricker to its clamping part, when pricker is inserted into
When the core wire of cable, cable passes sequentially through connecting wire and contactor ground connection.
After pricker is pierced into coaxial ground cable, core wire, the crust of connecting wire and coaxial ground cable may be implemented
Reliable contacts.
First, in practical operation, there is very high floating potential by the coaxial ground cable destroyed, high voltage directly connects
Ground is likely to arc discharge occur, and electric arc is likely to burn out cable internal insulating layer, while may be to operating personnel's
Safety threatens, and high-pressure vacuum contactor is connected between pricker and earth point, the vacuum interrupter and milli of contactor
The closing time of second grade overcomes the harm hidden danger for the electrical discharge arc that will appear when ground connection completely, avoids operating personnel and is burnt
Wound, relevant device is burnt and the generation of fire.
Simultaneously as the relatively higher suspension current potential of cable metal sheath is the greatest danger point charged during repair,
Need to monitor always the potential value of cable grounding line during the entire process of operation, and digital display RC divider and high pressure vacuum contact
Device parallel connection is followed by between coaxial ground cable and earth point, and digital display RC divider can not only be surveyed before the lap works of cable
Amount is destroyed the suspended voltage over the ground of earth cable, moreover it is possible in this temporary grounding system of electrification prosthetic device that the present invention designs
System monitors coaxial ground cable voltage-to-ground value, to ensure the safety of staff after installation is complete.
The end that coaxial ground cable is destroyed is the neat face being trimmed, and the induced voltage over the ground with thousands of volts,
Common ground wire can not mount, and coaxial ground cable external insulation sheath is very firm, to realize intermediate conductive core and external screen
Metal conducting layer reliable ground simultaneously is covered, is needed a kind of strong and being capable of current-carrying part inside and outside reliable contacts coaxial ground cable
Device.The prosthetic device that the utility model is designed not only realizes electrification prosthetic device and conduction inside and outside coaxial ground cable
Partial reliable overlap joint, while the hydraulic tongs used can make to cannot be loosened after after needling structure contact is upper, to protect
Demonstrate,prove the personal safety of operating personnel in cable repair process.The cable after being cut may be implemented in repair work in the hydraulic tongs
Always reliable ground in journey, and do not interfere by the repair of cut end.
Further, the ground connection needling device is hydraulic tongs, and the driving portion is the piston of the hydraulic tongs, the folder
It is crotch to hold portion, and the pricker is mounted on the piston of hydraulic tongs, the inner concave of the needle point of pricker towards the crotch.
Using crotch as clamping part, convenient in the ground connection operation of cable, can the utility model directly be passed through crotch
It is hung on cable, improves the convenience of the utility model operation, clamping part electricity can be fixed it is not necessary that cable is accurately positioned
Cable.
Further, screens slot, the extension axis and pricker of the screens slot are provided on the inner concave of the crotch
Axis intersect vertically, and the cross section of screens slot be isosceles trapezoid, thereon bottom be located at the slot bottom of screens slot.
The axis of pricker and the center line of the cross section of screens slot are coaxial.
It is provided with anti-slip rubber layer in the cell wall of the screens slot.
Preferably, when crotch is hung on cable, the cell wall and slot bottom of screens slot are contacted with the outer wall of cable, and are blocked
The cell wall and slot bottom of position slot are tangent with the outer wall of cable, then improve cable and are located at the stability in screens slot.
The setting of anti-slip rubber layer increases the frictional force between headstock and cable, steady convenient for the hooked headstock of hydraulic tongs
Surely it is hung on coaxial ground cable to be grounded, and steadily fixes cable.
Preferably, the axis of pricker and the center line of the cross section of screens slot are coaxial, when being pierced into cable convenient for pricker, screens
Uniform force is symmetrical in groove groove wall, and the dynamics being pierced into from pricker that the slot bottom of screens slot is subject to is maximum.
Further, fixed station is provided between the pricker and piston, one end of the fixed station is connect with piston,
The other end of fixed station is provided with mounting hole, and one end of the pricker is inserted into mounting hole, is provided on the side wall of fixed station
The through-hole being connected to mounting hole, one end far from divider is inserted into through-hole in the connecting wire, and the core wire of connecting wire
It welds or contacts with pricker.
Pricker is fixed on by fixed station on piston, is installed convenient for the dismounting of pricker.
Further, when the core wire of connecting wire and pricker contact, further include interior swivel nut, be arranged on the fixed station
There are external screw thread cylinder, the axis of the external screw thread cylinder to be overlapped with the axis of through-hole, one end of external screw thread cylinder is connect with fixed station, in institute
It states one end on the side wall of connecting wire close to fixed station and is socketed with mounting ring, the interior swivel nut is set in connecting wire, and
One end of its threaded hole is clamped by spring position-arresting ring and mounting ring, and interior swivel nut can independently be rotated relative to mounting ring, interior swivel nut
The other end of threaded hole is threadedly coupled with external screw thread cylinder.
By the way that associated components and the structures such as external screw thread cylinder is arranged, it is not only convenient for replacing the pricker that needle point is damaged, also
The stability being electrically connected between pricker and connecting wire is improved, prevents pricker from causing cable to connect there are gap with connecting wire
The case where ground can not be successfully occurs.
Further, annular groove I, the axis and mounting ring of the annular groove I are provided on the side wall of the mounting ring
Axis overlap, be provided with annular groove II, the annular groove II on the hole wall far from external screw thread cylinder on the threaded hole of interior swivel nut
Axis overlapped with the axis of interior swivel nut, the inner wall of the spring position-arresting ring is contacted with the slot bottom of annular groove I, spring position-arresting ring
Outer wall is contacted with the slot bottom of annular groove II.
Preferably, be arranged on spring position-arresting ring it is jagged so that the cross section of spring position-arresting ring be major arc shape.
It is arranged jagged on spring position-arresting ring, passes through the installation of spring position-arresting ring and mounting ring clamping convenient for swivel nut in improving
Efficiency and convenience.
Further, one end that the connecting wire is contacted with pricker is provided with mating groove, the mating groove it is transversal
Face is semicircle or minor arc shape, and its radius is consistent with the outer diameter of mounting hole one end is inserted on pricker.
The setting of mating groove increases the contact surface between pricker and connecting wire core wire, further increases pricker
The stability being electrically connected between connecting wire.
Further, the bottom hole of the mounting hole being provided with buffer spring, the spring is cylindroid helical-coil compression spring,
Its telescopic direction is parallel to the axis of mounting hole, the bottom hole connection of one end and mounting hole, and the other end is contacted with pricker.
When metal screen layer is inserted at the tip of pricker and is inserted into the core wire of cable, due to metal screen layer and cable
Core wire hardness it is big, the resistance that lancet tip is born is larger, simultaneously because pricker advance speed be not easy to control, therefore when thorn
When end resistance is excessive before needle, the tip of pricker can be caused to damage, increase needle exchange frequency；In order to avoid the above situation generates,
Buffer spring is arranged in the bottom hole of mounting hole, and when end resistance is excessive before pricker, pricker is moved to buffer spring, to be born to tip
The pricker of larger resistance protects the tip quality of pricker into row buffering, reduces needle exchange frequency.
Preferably, pricker material uses tungsten metal.
Further, the length of the insulating bar is 0.5m-3m.
The utility model compared with prior art, has the following advantages and advantages：
1, the utility model high-voltage cable joint ground wire electrification prosthetic device, high-pressure vacuum contactor be connected on pricker and
Between earth point, the vacuum interrupter of contactor and the closing time of Millisecond overcome the electric discharge that will appear when ground connection completely
The harm hidden danger of electric arc, avoids that operating personnel are burnt, relevant device is burnt and the generation of fire；
2, the utility model high-voltage cable joint ground wire electrification prosthetic device, due to the relatively higher suspension of cable metal sheath
Current potential is the greatest danger point charged during repair, needs to monitor cable grounding line always during the entire process of operation
Potential value, and digital display RC divider and high-pressure vacuum contactor parallel connection are followed by between coaxial ground cable and earth point, number
Aobvious RC divider can not only measure the suspended voltage over the ground for being destroyed earth cable before the lap works of cable, moreover it is possible at this
After installation is complete, monitoring coaxial ground cable is electric over the ground for the electrification prosthetic device that utility model is designed this temporary grounding system
Pressure value, to ensure the safety of staff；
3, the utility model high-voltage cable joint ground wire electrification prosthetic device, by the way that the associated components such as external screw thread cylinder are arranged
And structure, be not only convenient for needle point be damaged pricker replace, also improve be electrically connected between pricker and connecting wire it is steady
Qualitative, the case where preventing pricker from causing cable grounding can not be successfully there are gap with connecting wire, occurs；
4, the utility model high-voltage cable joint ground wire electrification prosthetic device, when metal screen layer is inserted at the tip of pricker
And be inserted into cable core wire when, since the core wire hardness of metal screen layer and cable is big, the resistance that lancet tip is born compared with
Greatly, simultaneously because the speed that pricker advances is not easy to control, therefore when end resistance is excessive before pricker, the tip of pricker can be made
At damage, increase needle exchange frequency；In order to avoid the above situation generates, buffer spring is set in the bottom hole of mounting hole, before pricker
When end resistance is excessive, pricker is moved to buffer spring, and the pricker to bear larger resistance to tip protects pricker into row buffering
Tip quality reduces needle exchange frequency；
5, the utility model high-voltage cable joint ground wire electrification prosthetic device, the setting of anti-slip rubber layer increase headstock
Frictional force between cable is steadily hung on convenient for the hooked headstock of hydraulic tongs on coaxial ground cable to be grounded, and
Steadily fix cable.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model；
Fig. 3 is the partial enlarged view in Fig. 1；
Connection diagrams of the Fig. 4 between fixed station and connecting wire；
Fig. 5 is the sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of fixed station；
Location diagrams of the Fig. 7 between mounting ring and connecting wire.
Label and corresponding parts title in attached drawing：
The ground 1- needling device, 2- clamping parts, 3- hydraulic chambers, 4- driving portions, 5- prickers, 6- divider, 7- contactors, 8-
Connecting wire, 9- fixed stations, 10- insulating bars, 11- mounting holes, 12- external screw thread cylinders, 13- mounting rings, swivel nut in 14-, 15- springs
Position-arresting ring, 16- annular grooves I, 17- mating grooves, 18- buffer springs, 19- anti-slip rubber layers, 20- cables, 21- bolts, 22- operations
Handle.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Fig. 1-Fig. 7, the utility model high-voltage cable joint ground wire electrification prosthetic device, including grounding pin thorn dress
1 is set, the driving device driving of the ground connection needling device 1 is moved positioned at the pricker 5 of its driving portion 4 to its clamping part 2, described
It is provided with earthed system between pricker 5 and ground connection, the earthed system includes digital display RC divider 6, high-pressure vacuum contactor 7
With connecting wire 8, one end is electrically connected by connecting wire 8 with pricker 5 after 7 parallel connection of the divider 6 and contactor, another
End ground connection；One end far from pricker 5 is provided with insulating bar 10 on ground connection needling device 1, and the axis of the insulating bar 10 is parallel
In the axis of pricker 5, one end is connect with hydraulic chamber 3；
Clamping part 2 fixes cable coaxial ground line to be repaired, and driving device drives pricker 5 to its clamping part 2, when pricker 5
When being inserted into the core wire of cable, cable passes sequentially through connecting wire 8 and contactor 7 is grounded.
The earthing mode of coaxial ground cable is：
Insulating bar 10 is first held, mobile grounding needling device 1, the clamping part 2 by being grounded needling device 1, which is fixed, to be waited being grounded
Coaxial ground cable 20 on, play the role of fixed cable 20, and the point cocked on positioning cable 20；
Restart ground connection needling device 1, so that driving device driving is moved to cable 20 positioned at the pricker of its driving portion 4, directly
It is pierced into pricker 5 in the cable core of cable 20, to complete the ground connection of cable 20, after pricker 5 is pierced into coaxial ground cable 20,
Core wire, the crust reliable contacts of connecting wire 8 and coaxial ground cable 20 may be implemented；When hydraulic tongs 1 are Manual hydraulic grip,
The operating handle for shaking Manual hydraulic grip is needed to carry out push-tight piston 4, and when being pierced into cable 20, the pressure-relief valve of hydraulic tongs 1 is in
Closed state when exiting pricker 5, opens the pressure-relief valve of hydraulic tongs 1；When hydraulic tongs 1 are electric hydraulic pincers, electronic liquid is only pressed
The starting switch of pressing tongs.
First, in practical operation, there is very high floating potential by the coaxial ground cable 20 destroyed, high voltage is direct
Ground connection is likely to arc discharge occur, and electric arc is likely to burn out cable internal insulating layer, while may be to operating personnel
Safety threaten, and high-pressure vacuum contactor 7 is connected between pricker 5 and earth point, the vacuum interrupter of contactor 7 with
And the closing time of Millisecond overcomes the harm hidden danger for the electrical discharge arc that will appear when ground connection completely, avoids operating personnel's quilt
Burn, relevant device is burnt and the generation of fire.
Simultaneously as digital display RC divider 6 and 7 parallel connection of high-pressure vacuum contactor be followed by coaxial ground cable 20 with connect
Between place, digital display RC divider 6 can not only measure before the lap works of cable 20 and be destroyed hanging over the ground for earth cable
Floating voltage, moreover it is possible to which after installation is complete in the electrification prosthetic device that the utility model is designed this temporary grounding system, monitoring is same
Axis earth cable voltage-to-ground value, to ensure the safety of staff.
Preferably, the utility model selects a kind of Portable digital display RC divider, such as FRC series divider.
Embodiment 2
The present embodiment is made furtherly to ground connection needling device 1 and its clamping part 2 on the basis of embodiment 1
It is bright.
As shown in Fig. 1-Fig. 7, the utility model high-voltage cable joint ground wire electrification prosthetic device, the grounding pin thorn dress
It is hydraulic tongs to set 1, and the driving portion 4 is the piston of the hydraulic tongs, and the clamping part 2 is crotch, and the pricker 5 is mounted on liquid
On the piston of pressing tongs, the inner concave of the needle point of pricker 5 towards the crotch.
Using crotch as clamping part 2, convenient for that in the ground connection operation of cable 20, directly the utility model can be passed through curved
Hook is located on cable 20, is improved the convenience of the utility model operation, can be consolidated clamping part it is not necessary that cable 20 is accurately positioned
Surely cable 20 is lived.
Further, be provided with screens slot 23 on the inner concave of the crotch, the extension axis of the screens slot 23 with
The axis of pricker 5 intersects vertically, and the cross section of screens slot 23 is isosceles trapezoid, and bottom is located at the slot bottom of screens slot 23 thereon；
The axis of pricker 5 and the center line of the cross section of screens slot 23 are coaxial.It is provided in the cell wall of the screens slot 23
Anti-slip rubber layer 19.
Preferably, when crotch is hung on cable 20, the outer wall of the cell wall and slot bottom of screens slot 23 with cable 20 connects
It touches, and the cell wall of screens slot 23 and slot bottom are tangent with the outer wall of cable 20, then improves cable 20 and be located in screens slot 23
Stability.
Further, the axis of pricker 5 and the center line of the cross section of screens slot 23 are coaxial, and cable is pierced into convenient for pricker 5
When 20, uniform force is symmetrical on 23 cell wall of screens slot, and the dynamics being pierced into from pricker 5 that the slot bottom of screens slot 23 is subject to is most
Greatly.
Embodiment 3
The present embodiment is further illustrated to the installation of pricker 5 on the basis of embodiment 1.
As shown in Fig. 1-Fig. 7, the utility model high-voltage cable joint ground wire electrification prosthetic device, in 5 He of the pricker
Fixed station 9 is provided between driving portion 4, one end of the fixed station 9 is connect with driving portion 4, and the other end of fixed station 9 is provided with
One end of mounting hole 11, the pricker 5 is inserted into mounting hole 11, is provided on the side wall of fixed station 9 and is connected to mounting hole 11
Through-hole, one end far from divider 6 in the connecting wire 8 is inserted into through-hole, and the core wire of connecting wire 8 is welded with pricker 5
It connects or contacts.
Pricker 5 is fixed on by fixed station 9 on driving portion 4, is installed convenient for the dismounting of pricker 5.
Soldering can be used in welding between the core wire and pricker 5 of connecting wire 8, is arranged in the end of 8 core wire of connecting wire
One block tin, is then inserted into through-hole, and is contacted with pricker 5, pricker 5 or fixed station 9 is then heated, so that tin melts
Change, then welds the core wire for connecing conducting wire 8 and pricker 5.
Embodiment 4
The present embodiment is on the basis of embodiment 3, and structure when being contacted with pricker 5 to the core wire of connecting wire 8 is made
It further illustrates.
As shown in Fig. 1-Fig. 7, the utility model high-voltage cable joint ground wire electrification prosthetic device, when connecting wire 8
When core wire is contacted with pricker 5, further includes interior swivel nut 14, external screw thread cylinder 12, the external screw thread cylinder are provided on the fixed station 9
12 axis is overlapped with the axis of through-hole, and one end of external screw thread cylinder 12 is connect with fixed station 9, in the side wall of the connecting wire 8
Upper one end close to fixed station 9 is socketed with mounting ring 13, and the interior swivel nut 14 is set in connecting wire 8, and its threaded hole
One end is clamped by spring position-arresting ring 15 and mounting ring 13, and interior swivel nut 14 can independently be rotated relative to mounting ring 13, interior swivel nut 14
The other end of threaded hole is threadedly coupled with external screw thread cylinder 12.
When the core wire of connecting wire 8 and pricker 5 contact, the installation method of connecting wire 8 is：
First connecting wire 8 is inserted into external screw thread cylinder 12, then rotates interior swivel nut 14, so that interior swivel nut 14 and external screw thread cylinder
12 are threadedly coupled, until connecting wire 8 contacts after passing through through-hole with the pricker 5 in mounting hole 11, and are pressed on pricker 5
On side wall, so that pricker 5 is steadily electrically connected with connecting wire 8.
Associated components and structure are waited by setting external screw thread cylinder 12, is not only convenient for replacing the pricker 5 that needle point is damaged,
The stability being electrically connected between pricker 5 and connecting wire 8 is also improved, prevents pricker 5 from causing there are gap with connecting wire 8
The case where cable grounding can not be successfully occurs.
Further, be provided with annular groove I 16 on the side wall of the mounting ring 13, the axis of the annular groove I 16 with
The axis of mounting ring 13 overlaps, and annular groove II is provided on the hole wall far from external screw thread cylinder 12 on the threaded hole of interior swivel nut 14,
The axis of the annular groove II is overlapped with the axis of interior swivel nut 14, the slot of the inner wall and annular groove I 16 of the spring position-arresting ring 15
Bottom contacts, and the outer wall of spring position-arresting ring 15 is contacted with the slot bottom of annular groove II.
Preferably, be arranged on spring position-arresting ring 15 it is jagged so that the cross section of spring position-arresting ring 15 be major arc shape.
It is arranged jagged on spring position-arresting ring 15, passes through spring position-arresting ring 15 and mounting ring 13 convenient for swivel nut 14 in improving and block
The installation effectiveness and convenience connect.
Embodiment 5
The present embodiment is on the basis of embodiment 3-4, and the structure between connecting wire 8 and pricker 5 is made further
Explanation.
As shown in Fig. 1-Fig. 7, the utility model high-voltage cable joint ground wire electrification prosthetic device, in the connecting wire
8 one end contacted with pricker 5 are provided with mating groove 17, and the cross section of the mating groove 17 is semicircle or minor arc shape, and its
Radius is consistent with the outer diameter of 11 one end of mounting hole is inserted on pricker 5.
The setting of mating groove 17 increases the contact surface between 8 core wire of pricker 5 and connecting wire, further increases
The stability being electrically connected between pricker 5 and connecting wire 8.
Further, the bottom hole of the mounting hole 11 is provided with buffer spring 18, the spring 18 is cylindrical screw pressure
Contracting spring, telescopic direction are parallel to the axis of mounting hole 11, and one end is connect with the bottom hole of mounting hole 11, the other end and thorn
Needle 5 contacts.
When metal screen layer is inserted at the tip of pricker 5 and is inserted into the core wire of cable 20, due to metal screen layer and
The core wire hardness of cable 20 is big, and the resistance that 5 tip of pricker is born is larger, simultaneously because the speed that pricker 5 advances is not easy to control,
Therefore when end resistance is excessive before pricker 5, the tip of pricker 5 can be caused to damage, increases needle exchange frequency；In order to avoid above-mentioned feelings
Condition generates, and buffer spring 18 is arranged in the bottom hole of mounting hole 11, when end resistance is excessive before pricker 5, pricker 5 is to buffer spring 18
Mobile, the pricker 5 to bear larger resistance to tip protects the tip quality of pricker 5, reduces needle exchange frequency into row buffering.
Embodiment 6
The present embodiment is further illustrated to insulating bar 10 on the basis of embodiment 1.
As shown in Fig. 1-Fig. 7, the utility model high-voltage cable joint ground wire electrification prosthetic device, it is preferable that described exhausted
The length of edge bar 10 is 1m.
Embodiment 7
The present embodiment is further illustrated to the fixation of connecting wire 8 on the basis of embodiment 1.
As shown in Figure 1, the utility model high-voltage cable joint ground wire electrification prosthetic device, further includes bolt 21, in institute
It states one end on the side wall of headstock 2 close to hydraulic chamber and is provided with threaded hole, the bolt 21 is threadedly coupled with threaded hole, and even
Conducting wire 8 is connect across the head of bolt 21 and headstock 2, while rotating bolt 21, connecting wire 8 is fixed on to the head of bolt 21
Between portion and headstock 2.
Connecting wire 8 is fixed in the setting of bolt 21, prevents connecting wire 8 from arbitrarily extending and influencing pricker 5 and be pierced into electricity
Cable 20.
Above-described specific implementation mode, to the purpose of this utility model, technical solution and advantageous effect carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (10)
1. high-voltage cable joint ground wire electrification prosthetic device, including ground connection needling device (1), the ground connection needling device (1)
Driving device driving it is mobile to its clamping part (2) positioned at the pricker (5) of its driving portion (4), it is characterised in that：In the pricker
(5) it is provided with earthed system between ground connection, the earthed system includes digital display RC divider (6), high-pressure vacuum contactor
(7) and connecting wire (8) one end passes through connecting wire (8) and pricker (5) after, the divider (6) and contactor (7) are in parallel
Electrical connection, other end ground connection；One end far from pricker (5) is provided with insulating bar (10) on ground connection needling device (1)；
The fixed cable coaxial ground line to be repaired of clamping part (2), driving device drive pricker (5) to its clamping part (2), work as pricker
(5) when being inserted into the core wire of cable, cable passes sequentially through connecting wire (8) and contactor (7) ground connection.
2. high-voltage cable joint ground wire electrification prosthetic device according to claim 1, it is characterised in that：The grounding pin
Thorn device (1) is hydraulic tongs, and the driving portion (4) is the piston of the hydraulic tongs, and the clamping part (2) is crotch, the thorn
Needle (5) is mounted on the piston of hydraulic tongs, the inner concave of the needle point of pricker (5) towards the crotch.
3. high-voltage cable joint ground wire electrification prosthetic device according to claim 2, it is characterised in that：In the crotch
Inner concave on be provided with screens slot (23), the extension axis and the axis of pricker (5) of the screens slot (23) intersect vertically, and
The cross section of screens slot (23) is isosceles trapezoid, and bottom is located at the slot bottom of screens slot (23) thereon；
The axis of pricker (5) and the center line of the cross section of screens slot (23) are coaxial.
4. high-voltage cable joint ground wire electrification prosthetic device according to claim 3, it is characterised in that：In the screens
Anti-slip rubber layer (19) is provided in the cell wall of slot (23).
5. high-voltage cable joint ground wire electrification prosthetic device according to claim 1, it is characterised in that：In the pricker
(5) fixed station (9) is provided between driving portion (4), one end of the fixed station (9) is connect with driving portion (4), fixed station
(9) the other end is provided with mounting hole (11), and one end of the pricker (5) is inserted into mounting hole (11), the side in fixed station (9)
The through-hole being connected to mounting hole (11) is provided on wall, through-hole is inserted into one end far from divider (6) on the connecting wire (8)
In, and the core wire of connecting wire (8) is welded or is contacted with pricker (5).
6. high-voltage cable joint ground wire electrification prosthetic device according to claim 5, it is characterised in that：Work as connecting wire
(8) when core wire is contacted with pricker (5), further include interior swivel nut (14), external screw thread cylinder is provided on the fixed station (9)
(12), the axis of the external screw thread cylinder (12) is overlapped with the axis of through-hole, and one end and the fixed station (9) of external screw thread cylinder (12) connect
It connects, one end close to fixed station (9) on the side wall of the connecting wire (8) is socketed with mounting ring (13), the interior swivel nut
(14) it is set in connecting wire (8), and one end of its threaded hole is clamped by spring position-arresting ring (15) and mounting ring (13),
The other end of threaded hole is threadedly coupled with external screw thread cylinder (12).
7. high-voltage cable joint ground wire electrification prosthetic device according to claim 6, it is characterised in that：In the installation
Annular groove I (16) is provided on the side wall of ring (13), the axis of the annular groove I (16) is overlapped with the axis of mounting ring (13),
On the threaded hole of interior swivel nut (14) annular groove II, the axis of the annular groove II are provided on the hole wall far from external screw thread cylinder (12)
Line is overlapped with the axis of interior swivel nut (14), and the inner wall of the spring position-arresting ring (15) is contacted with the slot bottom of annular groove I (16), spring
The outer wall of position-arresting ring (15) is contacted with the slot bottom of annular groove II.
8. the high-voltage cable joint ground wire electrification prosthetic device according to any one of claim 5-7, it is characterised in that：
One end that the connecting wire (8) is contacted with pricker (5) is provided with mating groove (17), the cross section of the mating groove (17) is
Semicircle or minor arc shape, and its radius is consistent with the outer diameter of mounting hole (11) one end is inserted on pricker (5).
9. the high-voltage cable joint ground wire electrification prosthetic device according to any one of claim 5-7, it is characterised in that：
The bottom hole of the mounting hole (11) is provided with buffer spring (18), the spring (18) is cylindroid helical-coil compression spring, is stretched
Contracting is oriented parallel to the axis of mounting hole (11), and one end is connect with the bottom hole of mounting hole (11), and the other end connects with pricker (5)
It touches.
10. high-voltage cable joint ground wire electrification prosthetic device according to claim 1, it is characterised in that：The insulation
The length of bar (10) is 0.5m-3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820058210.XU CN207651696U (en) | 2018-01-12 | 2018-01-12 | High-voltage cable joint ground wire electrification prosthetic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820058210.XU CN207651696U (en) | 2018-01-12 | 2018-01-12 | High-voltage cable joint ground wire electrification prosthetic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207651696U true CN207651696U (en) | 2018-07-24 |
Family
ID=62876089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820058210.XU Expired - Fee Related CN207651696U (en) | 2018-01-12 | 2018-01-12 | High-voltage cable joint ground wire electrification prosthetic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207651696U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011209A (en) * | 2018-01-12 | 2018-05-08 | 国网四川省电力公司成都供电公司 | High-voltage cable joint is grounded powered prosthetic device and powered restorative procedure |
| CN109633280A (en) * | 2018-11-30 | 2019-04-16 | 陈璐 | A kind of shallow-layer of high-tension apparatus ground line loosens the soil the measuring device with electricity of pole plate folder patch |
| CN111835283A (en) * | 2020-06-30 | 2020-10-27 | 文庭荣 | Instrument equipment for finding low-efficiency components of photovoltaic power station |
-
2018
- 2018-01-12 CN CN201820058210.XU patent/CN207651696U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011209A (en) * | 2018-01-12 | 2018-05-08 | 国网四川省电力公司成都供电公司 | High-voltage cable joint is grounded powered prosthetic device and powered restorative procedure |
| CN108011209B (en) * | 2018-01-12 | 2024-05-14 | 国网四川省电力公司成都供电公司 | Live repair device and live repair method for high-voltage cable connector grounding wire |
| CN109633280A (en) * | 2018-11-30 | 2019-04-16 | 陈璐 | A kind of shallow-layer of high-tension apparatus ground line loosens the soil the measuring device with electricity of pole plate folder patch |
| CN111835283A (en) * | 2020-06-30 | 2020-10-27 | 文庭荣 | Instrument equipment for finding low-efficiency components of photovoltaic power station |
| CN111835283B (en) * | 2020-06-30 | 2024-01-26 | 文庭荣 | Instrument and equipment for searching photovoltaic power station low-efficiency components |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180724 Termination date: 20190112 |