CN107871938A - Double back, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device - Google Patents
Double back, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device Download PDFInfo
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- CN107871938A CN107871938A CN201711136871.6A CN201711136871A CN107871938A CN 107871938 A CN107871938 A CN 107871938A CN 201711136871 A CN201711136871 A CN 201711136871A CN 107871938 A CN107871938 A CN 107871938A
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- Prior art keywords
- yoke plate
- strain insulator
- stud
- bevel gear
- wire clamp
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
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- Suspension Of Electric Lines Or Cables (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of double back, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device, belong to line maintenance equipment technical field, the device installs by-pass shunt line by ground potential action bars, this shunt line can shunt script by the total current of strain insulator yoke plate, also can be in strain insulator yoke plate failure as interim substitute, ensure the normal operation of cable, pass through powered installation by-pass shunt line, reduce in the on-load short time, reduce the temperature of strain insulator yoke plate, by-pass shunt line is installed by ground potential action bars according to the position of strain insulator yoke plate and drainage thread strain insulator yoke plate is shunted into reduction yoke plate load, using this shunt line as lifting-line and yoke plate while excessively stream, the resistive impedance of reduction problem yoke plate, and it can act also as standby in yoke plate exception；Maintainer, which need not be entered in the dangerous current potential of steel tower, simultaneously is overhauled, and has ensured the personal safety of maintainer.
Description
Technical field
It is the strain insulator yoke plate being related in power system, particularly double back, more the invention belongs to line maintenance equipment technical field
Return line tension yoke plate by-pass shunt bridging device.
Background technology
The stable operation of strain insulator yoke plate is the important step of power grid security in power wiring systems, ultra-high-tension power transmission line
Strain insulator yoke plate produced because the factor such as humidity, temperature, wind-force, high voltage shock causes strain insulator yoke plate bolt looseness resistance to increase
Fever phenomenon is carried, with overheat time lengthening, such as strain insulator yoke plate fusing accident will occur for processing not in time.At present, Dan Huigao
The overload heating of pressure transmission line strain insulator yoke plate bolt looseness is more using ground potential maintenance method processing strain insulator yoke plate heating, with power network
Build and the continuous improvement of Planning Standard, ultra-high-tension power transmission line are just developed from original single back line to double back, more times steel towers, together
The wire of tower double-circuit line typically uses vertical arrangement, because iron tower structure is compact, live wire to the space of tower body away from
From the requirement for being substantially only capable of meeting the normal windage yaw of circuit and the operation of anti-lightning overvoltage, but personnel by insulated ladder, absolutely
Combinational gap is inadequate when the instruments such as edge rope ladder enter current potential, and protection against electric filed technology is indefinite, and safe distance nargin is small, cross-arm spacing
With clearance it is small can not use earth potential live overhaul.
Under the conditions of prior art, maintainer overloads heating for the strain insulator yoke plate bolt looseness of double back, more times steel towers
Hidden trouble maintenance is felt simply helpless, and greatly developing with power network, fellow peers' evaluation and power supply reliability requirement, important line peace
Entirely, stable operation requires more and more higher, should reduce frequency of power cut, the frequency of important line as far as possible, improve in particular cases
Ability of emergency management, so the upkeep operation for solving small spacing multi-circuit lines on the same tower strain insulator yoke plate bolt looseness overload heating is band
Electric operation development is imperative, and therefore, solving small spacing strain insulator yoke plate bolt looseness overload heating has very important reality
Meaning, the development trend of following line live-line work is also complied with, be advantageous to the development of Condition-based Maintenance of Transmission Line work.
The content of the invention
The present invention devises a kind of double back, multi circuit transmission lines strain insulator yoke plate by-pass shunt is put up a bridge and filled to solve the above problems
Put, by powered installation by-pass shunt line, reduce in the on-load short time, the temperature of strain insulator yoke plate is reduced, according to strain insulator yoke plate
And the position of drainage thread installs by-pass shunt line by ground potential action bars and strain insulator yoke plate is shunted into reduction yoke plate load,
Using this shunt line as lifting-line and yoke plate excessively stream, the resistive impedance of reduction problem yoke plate, and can also make in yoke plate exception simultaneously
For standby；Maintainer, which need not be entered in the dangerous current potential of steel tower, simultaneously is overhauled, and has ensured the person peace of maintainer
Entirely.
To achieve these goals, the technological means taken of the present invention is：
Double back, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device, the device include wire clamp and drainage thread wire clamp,
It is characterized in that：Described wire clamp and drainage thread wire clamp include the opening that A/F is adjusted by helicitic texture
Folder, the pressing plate that opening folder includes the geometrical clamp of Qian font structure and is located therein and is engaged with its side, helicitic texture include
Screwed hole in the stud and geometrical clamp that are connected with pressing plate, the stud outer end are connected with rotary motivator, wire clamp
Conducting bridge line is connected between the fixed mount of drainage thread wire clamp.
The rotary motivator of described drainage thread wire clamp includes the bevel gear mechanism being connected with stud outer end, umbrella tooth turbine
Structure includes the one-level bevel gear that is meshed and two-stage bevel gear, stud outer end be respectively arranged with the middle part of one-level bevel gear prism and
Prismatic hole, to slide axially and circumferential spacing cooperation between prism and prismatic hole, the rotating shaft outer end of two-stage bevel gear is by releasing
Connection governor motion is provided with insulation operating.
The rotary motivator of described wire clamp include by release connection governor motion be connected to stud outer end
Insulation operating.
The described connection governor motion that releases includes the sleeve that outer wall carries C font slideways, and insulation operating one end is set
Have the stud shaft in the sleeve, be provided with the rifle bolt moved along C font slideways on stud shaft outer wall, outside sleeve inner end with it is corresponding
Rotating shaft or stud outer end are fixedly connected, and sleeve inner end is internally provided with magnet, and magnet is fixedly connected with the inner absorption of stud shaft.
Described conducting bridge line is annealed copper wire.
Described one-level bevel gear and the specification of two-stage bevel gear are 90 degree, 1:1 pairing, 1.5 moulds, the bevel gear of 16 teeth.
The beneficial effects of the invention are as follows：By the present apparatus maintainer can be avoided to turn to going to overhaul above steel tower on ground
Dynamic insulating bar.For wire clamp, rotate insulating bar and drive screw rod to rotate, screw rod pressing plate also therewith on move down
It is dynamic, by conductor clamping or release；For drainage thread wire clamp, in ground rotation insulating bar, the two-stage bevel gear of engagement
One-level bevel gear is driven, one-level bevel gear drives the prism structure on screw rod top to rotate, and screw rod bottom rotates in screwed hole, spiral shell
Bar band dynamic pressure plate is moved up and down, and drainage thread is clamped or unclamped, the bevel gear of engagement changes the direction of power transmission, overhauls
Personnel are more convenient when wire clamp is placed in ground upwardly.Conducting bridge line, with yoke plate while excessively stream, reduces problem as shunt line
The resistive impedance of yoke plate, and can act also as standby in yoke plate exception.
Brief description of the drawings
Structural representation when Fig. 1 is wire clamp and conduction wire clamp working condition；
Fig. 2 is the structural representation of drainage thread wire clamp；
Fig. 3 is the structural representation of wire clamp.
In figure, 1, insulating bar, 2, stud shaft, 3, sleeve, 4, magnet, 5, rotating shaft, 6, drainage thread, 701, one-level umbrella tooth
Wheel, 702, two-stage bevel gear, 8, screw rod, 801, prism structure, 9, wire, 10, ring flange, 11, pressing plate, 12, conducting bridge line,
13rd, geometrical clamp, 14, C font slideways, 15, rifle bolt.
Embodiment
The present invention is by powered installation by-pass shunt line, reduces resistance, reduces the electricity that strain insulator yoke plate is flowed through in the short time
Stream, so as to play a part of reducing strain insulator yoke plate temperature.According to the position of strain insulator yoke plate and drainage thread, by ground potential
Action bars installs by-pass shunt line, and this shunt line can shunt script by the total current of strain insulator yoke plate, also can be in strain insulator yoke plate
As interim substitute during failure, ensure the normal operation of cable.
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Specific embodiment, as shown in figure 1,
The device includes wire clamp and drainage thread wire clamp, and wire clamp and drainage thread wire clamp include by helicitic texture
To adjust the opening of A/F folder, opening folder includes the geometrical clamp 13 of Qian font structure and is located therein and matches with its side
The pressing plate 11 of conjunction, helicitic texture include the screwed hole in the stud 8 and geometrical clamp that are connected with pressing plate 11, the outer end of stud 8
Rotary motivator is connected with, conducting bridge line 12 is connected between wire clamp and the fixed mount of drainage thread wire clamp.Conducting bridge line
12 are used as shunt line, and yoke plate excessively stream simultaneously, reduce the resistive impedance of problem yoke plate, and after can act also as in yoke plate exception
It is standby.
As shown in Fig. 2 the rotary motivator of drainage thread wire clamp includes the bevel gear mechanism being connected with the outer end of stud 8, umbrella
Gear mechanism includes one-level bevel gear 701 and the two-stage bevel gear 702 being meshed, the outer end of stud 8 and the middle part of one-level bevel gear 701
Prism 801 and prismatic hole are respectively arranged with, to slide axially and circumferential spacing cooperation between prism 801 and prismatic hole, two level umbrella
The outer end of rotating shaft 5 of gear 702 is provided with insulation operating 1 by connection governor motion is released.One-level bevel gear in the present embodiment
701 and two-stage bevel gear 702 specification for 90 degree, 1:1 pairing, 1.5 moulds, the bevel gear of 16 teeth.Insulating bar 1 rotates, and nibbles
Power is transferred to six prisms by the motion between the bevel gear two-phase of conjunction, and stable drive, torsion are big, compact-sized, space-consuming
Area is small.Being rotated by insulating bar 1 drives bevel-gear rotating bolt to rotate feed, and pressure compaction is produced by screw thread travel
Drainage thread 6.So as to meet platen pressure value, the passing through property of electric current of the device wire clamp is improved.
The geared sleeve of one-level bevel gear 701 is fixedly connected by ring flange 10 with geometrical clamp 13, and drainage thread wire clamp is by method
Blue disk 10 adjusts the opening direction of geometrical clamp 13, to tackle different states of ground, when the ground in some direction of steel tower can not stand
Stand or in use, the direction of geometrical clamp 13 and pressing plate 11 is adjusted by ring flange 10, regardless of personnel station in which direction, guarantee
Geometrical clamp 13 and drainage thread 6 are orthogonal, easy to operation；Prism 801 is six prisms, and the bevel gear of engagement changes power transmission
Direction, also controlled upwardly on ground for maintainer top drainage thread wire clamp when provide conveniently.
As shown in figure 3, the rotary motivator of wire clamp include by release connection governor motion be connected to outside stud 8
The insulation operating 1 at end.
Releasing connection governor motion includes the sleeve 3 that outer wall carries C fonts slideway 14, and the one end of insulation operating 1 is provided with
Stud shaft 2 in sleeve 3, is provided with the rifle bolt 15 moved along C fonts slideway 14 on the outer wall of stud shaft 2, sleeve 3 it is inner it is outside with
Corresponding rotating shaft 5 or the outer end of stud 8 are fixedly connected, and the inner of sleeve 3 is internally provided with magnet 4, magnet 4 and the inner absorption of stud shaft 2
It is fixedly connected.Insulating bar 1 is fixed with the phase of rotating shaft 5 by magnet 4, fixed by rifle bolt 15 and sleeve 3, with stud shaft 2, sleeve
3 and rotating shaft 5 be connected as an entirety, rotating insulating bar 1 can be by unitary rotation, to insulating bar 1 is unloaded, instead
Direction, which rotates, outwards to be pulled, and make use of the magnetic force of magnet 4, not by instruments such as bolts, maintainer is on ground and upper end
It is distant, it also can install or dismantle insulating bar.
Conducting bridge line 12 is soft copper bridge line, and table 1-1 is the conductance and temperature-coefficient of electrical resistance of common metal material：
The resistivity and temperature-coefficient of electrical resistance of table 1-1 common metal materials
The selection of conducting bridge line 12 mainly considers in terms of electric property, annealed copper wire is selected in the present embodiment, by table
It can be seen that resistivity 1.72x10 during 20 DEG C of copper-8(Ω .m), temperature-coefficient of electrical resistance 0.0041 (DEG C-1), fusing point 1083.4
(the N/mm of (DEG C) tensile strength 200~2102) linear expansion coefficient 16.6x10-6(℃-1)) electric energy loss of the annealed copper wire with minimum,
There are enough mechanical strengths, corrosion-resistant, high temperature resistance, easy processing during normal temperature.Using diameter 30mm2Completion is manufactured, current-carrying capacity is reachable
130A.And pressure test and excessively stream experiment have been done, section product matches with voltage class, and voltage drop and the temperature rise of full load are no more than
Permissible value, and pass through verification.
Utilize the operating procedure of the turnaround of unit：
A：Using it is preceding will in the insertion sleeve 3 of stud shaft 2 that be connected with insulating bar 1, compress magnet 4 simultaneously rotate rifle bolt 15
Into the C fonts slideway 14 of rifle bolt 15, stud shaft 2 is blocked；
B：Confirm that shaft tower large size side or small size side position, wire clamp are used primarily in strain rod tower trumpet side, drawn before installation
Streamline wire clamp is used primarily in strain rod tower large size side, and drainage thread wire clamp is used to clamp drainage thread, before shaft tower current potential is entered, according to
The opening direction of the arcuate version of 6 angle adjustment flange disk of drainage thread 10, by 25 square millimeters among wire clamp and drainage thread wire clamp
Annealed copper wire connects, and two people operate installation simultaneously, the person and electrical body holding safe distance, and two insulating bars enter simultaneously during operation
Current potential；
C：Two operators hold insulating bar and the opening of geometrical clamp 13 are respectively aligned into conductor wire end and drainage line end insertion, do
Turn clockwise, screw rod promotes pressing plate 11 to clamp wire 9 and drainage thread 6, and it is firm to confirm that wire clamp pressing plate 11 compresses wire 9 on inspection
After connection, operating personnel hold the outside top pressure sleeve magnet 4 of insulating bar, and rotating insulating bar 1 makes rifle bolt 15 be slided from C fonts
Exited in road 14, insulating bar 1 and stud shaft 2 can be exited along C fonts slideway 14 and departed from part flow arrangement sleeve 3 and install
Finish.
The present invention is bypass operation shunt method, can effectively increase strain insulator yoke plate contact area reduction strain insulator yoke plate and pass through
Electric current, reduce the resistive impedance of problem joint；Effectively reduce strain insulator yoke plate load, can by strain insulator yoke plate high temperature reduce by 70% with
Under；The successful application of this method expands multi-circuit lines on the same tower hotline maintenance field by wider, to eliminate line defct in time
The repair based on condition of component of further genralrlization transmission line of electricity, improving the economic and social profit of circuit availability coefficient and enterprise will play more
Add positive role.Ensure that user continuously powers, protect electric line safe operation so as to improve, strengthen Jian Xiu planned and timeliness
Property；The processing of strain insulator yoke plate overheating defect can be carried out in the case where not influenceing line load and not changing power system operating mode.
In August, 2016-December, my research group operating personnel by power failure multi circuit transmission lines anchor support to this operator
Method and supporting Work tool carry out simulated test repeatedly, and pressure-resistant excessively stream experiment is carried out to conducting bridge line, and establishment planning standard is turned into
Industry guiding book.3 110kv and 2 220kv multiple-loop lines, which have been successfully completed, using the operational method protects electric line strain insulator yoke plate mistake
The installation transition task of the by-pass shunt conducting bridge line of heat, Work tool is safe and reliable in operation process, stable, the group of theory verification
Close gap size and meet the needs of live powered safety operation.Calculated by a kw of 110kv circuits on-load 6.5 ten thousand, power failure is robbed
Xiu operations at least need line outage 4n, and (including power failure operation, work permit and termination are check-ined, and power transmission operation is taken
Between) more than the kw.m of delivery 260,000 is then lost, by every 0.5 yuan of 130,000 yuan of direct economic loss of calculating of kilowatt hour.2016 8
My work area 110kv-220kv multiple-loop lines of the moon in August, -2017 are protected electric line and found altogether at strain insulator yoke plate heating hidden danger 7, as that need to stop
Electric-examination, which is repaiied, to cause the power-on time of more than 30 hours, causes 2,600,000 yuan of direct economic loss.
Claims (6)
1. double back, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device, the device include wire clamp and drainage thread wire clamp, its
It is characterised by：Described wire clamp and drainage thread wire clamp include adjusting the opening of A/F folder by helicitic texture,
The pressing plate (11) that opening folder includes the geometrical clamp (13) of Qian font structure and is located therein and is engaged with its side, helicitic texture
Including the screwed hole in the stud (8) being connected with pressing plate (11) and geometrical clamp, stud (8) outer end is connected with slewing maneuver
Conducting bridge line (12) is connected between the fixed mount of mechanism, wire clamp and drainage thread wire clamp.
2. double back according to claim 1, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device, it is characterised in that：Institute
The rotary motivator for the drainage thread wire clamp stated includes the bevel gear mechanism being connected with stud (8) outer end, and bevel gear mechanism includes
The one-level bevel gear (701) and two-stage bevel gear (702) being meshed, stud (8) outer end and difference in the middle part of one-level bevel gear (701)
Be provided with prism (801) and prismatic hole, prism (801) between prismatic hole to slide axially and circumferential spacing cooperation, two level umbrella
Rotating shaft (5) outer end of gear (702) is provided with insulation operating (1) by connection governor motion is released.
3. double back according to claim 1, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device, it is characterised in that：Institute
The rotary motivator for the wire clamp stated includes the insulation manipulation for connecting governor motion by releasing and being connected to stud (8) outer end
Bar (1).
4. double back, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device according to Claims 2 or 3, it is characterised in that：
The described connection governor motion that releases includes the sleeve (3) that outer wall carries C fonts slideway (14), and insulation operating (1) one end is set
The stud shaft (2) being located in sleeve (3) is equipped with, is provided with stud shaft (2) outer wall along the mobile rifle bolt (15) of C fonts slideway (14),
The inner outside of sleeve (3) is fixedly connected with corresponding rotating shaft (5) or stud (8) outer end, and sleeve (3) the inner is internally provided with magnet
(4), magnet (4) is fixedly connected with the inner absorption of stud shaft (2).
5. a kind of described double back according to claim 1, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device, it is special
Sign is：Described conducting bridge line (12) is annealed copper wire.
6. a kind of described double back according to claim 2, multi circuit transmission lines strain insulator yoke plate by-pass shunt bridging device, it is special
Sign is：Described one-level bevel gear (701) and the specification of two-stage bevel gear (702) are 90 degree, 1:1 pairing, 1.5 moulds, 16 teeth
Bevel gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136871.6A CN107871938B (en) | 2017-11-16 | 2017-11-16 | Bypass shunt bridging device for double-circuit and multi-circuit line tension-resistant yoke plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711136871.6A CN107871938B (en) | 2017-11-16 | 2017-11-16 | Bypass shunt bridging device for double-circuit and multi-circuit line tension-resistant yoke plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107871938A true CN107871938A (en) | 2018-04-03 |
| CN107871938B CN107871938B (en) | 2023-07-07 |
Family
ID=61754180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711136871.6A Active CN107871938B (en) | 2017-11-16 | 2017-11-16 | Bypass shunt bridging device for double-circuit and multi-circuit line tension-resistant yoke plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107871938B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742626A (en) * | 2019-02-28 | 2019-05-10 | 广州供电局有限公司 | Drainage thread auxiliary mounting tool |
| WO2019119469A1 (en) * | 2017-12-21 | 2019-06-27 | 国家电网公司 | Tension-resistant yoke plate overload heating and shunting device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107871938B (en) | 2023-07-07 |
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