CN107171241B - A kind of replacement extra high voltage line strain insulator complexes - Google Patents
A kind of replacement extra high voltage line strain insulator complexes Download PDFInfo
- Publication number
- CN107171241B CN107171241B CN201710199363.6A CN201710199363A CN107171241B CN 107171241 B CN107171241 B CN 107171241B CN 201710199363 A CN201710199363 A CN 201710199363A CN 107171241 B CN107171241 B CN 107171241B
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- hydraulic cylinder
- pump
- translot
- insulator
- cylinder
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- 239000012211 strain insulator Substances 0.000 title claims abstract description 14
- 239000012212 insulator Substances 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
Landscapes
- Insulators (AREA)
Abstract
The present invention relates to a kind of replacement extra high voltage line strain insulator complexes comprising: the clamping plate of insulator on clamping transmission line of electricity；It is rotationally connected with the connector of external agency or the clamping plate；And hydraulic cylinder, there is a rod chamber and rodless cavity, reset spring is set in rodless cavity；Cylinder body is fixed with pump and reversal valve on periphery；The input shaft of pump stretches out the pump housing, the interconnecting piece that extension end setting is flexibly connected with external foundation, for hand-operated tools or the driving input shaft rotation of electric tool input power；Wherein, the cylinder body of hydraulic cylinder connects a connector, and piston rod connects a connector.Through the above scheme, by clamping plate card before and after the insulator to be replaced on two panels insulator steel cap after, start hydraulic cylinder, closed fixture can be tightened；Relative to Manual tightening closed fixture, the technical program is laborsaving, significantly reduces labor intensity, especially can provide bigger pulling force.Hand-operated tools or electric tool can be used in starting for pump, simple to operate.
Description
Technical field
The present invention relates to a kind of auxiliary tools of power equipment, insulate more particularly, to a kind of replacement extra high voltage line strain insulator
Sub- complexes.
Background technique
Closed fixture is that glass or a kind of metal fixture when porcelain insulator are replaced in power transmission lines overhauling, and when use will close
Formula card is stuck on the two panels insulator steel cap of insulator front and back to be replaced, Manual tightening closed fixture, by the lotus on insulator to be replaced
Idling moves on closed fixture, to carry out the replacement of insulator.In the replacement operation of monolithic insulator, the use of closed fixture can
So that service personnel bunch of insulator string need not be placed ground, greatly simplifies work flow, shorten the repair time, simultaneously
A large amount of tools are also saved, labor intensity is reduced, improve upkeep operation efficiency；Such as entitled " a kind of closed type fixture " is (public
The number of opening: CN203071495U), entitled " a kind of adjustable insulator closed card " (notification number: CN201813109U), entitled " one
Plant the general closed type fixture and its application method for replacing extra-high voltage insulator " (publication No.: CN106159796A) etc. show
Closed fixture；But the prior art including public technology is all made of manual operation, labor intensity when tightening closed fixture
Greatly, especially caused by pulling force it is limited, it is difficult to adapt to the requirement of large-scale ultra-large type line upkeep maintenance, for example, 20T or with
On.
Summary of the invention
A kind of the main purpose of the present invention is to provide labor intensity replacement extra high voltage line strain insulator that is small, can provide larger pulling force
Insulator complexes.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals: a kind of extra-high crimping of replacement
Road strain insulator complexes comprising:
Clamp the clamping plate of insulator on transmission line of electricity；
It is rotationally connected with the connector of external agency or the clamping plate；
And hydraulic cylinder, there is a rod chamber and rodless cavity, reset spring is set in rodless cavity；Cylinder body is fixed on periphery
Pump and reversal valve；The input shaft of pump stretches out the pump housing, the interconnecting piece that extension end setting is flexibly connected with external foundation, for manual work
Tool or the driving input shaft rotation of electric tool input power；
Wherein, the cylinder body of hydraulic cylinder connects a connector, and piston rod connects a connector.
Through the above scheme, after clamping plate card is before and after the insulator to be replaced on two panels insulator steel cap, start hydraulic cylinder, i.e.,
Closed fixture can be tightened；Relative to Manual tightening closed fixture, the technical program is laborsaving, significantly reduces labor intensity, especially
It can provide bigger pulling force.Hand-operated tools or electric tool can be used in starting for pump, simple to operate.
Preferably, the hydraulic cylinder is single-acting cylinder, the reset spring for pushing piston is set in rodless cavity；Reversal valve is in
When home position, at least two mouthfuls of reversal valve are communicated, and two communicated mouthful are separately connected two chambers of hydraulic cylinder；When reversal valve commutates, liquid
The oil inlet of the rodless cavity connection pump of cylinder pressure, the oil outlet of the rod chamber connection pump of hydraulic cylinder.This structure, using rodless cavity
Oil storage reduces overall volume and weight it is not necessary that fuel tank is separately provided.
Preferably, being equipped with two adjusting rods on a connector at hydraulic cylinder body both ends, two adjust boom end phase
Right, screw thread is arranged in opposite both ends on the outer periphery, and thread rotary orientation is opposite；Two ends of thread are combined with release handle.Rotation is adjusted
Handle can draw close adjusting rod；Before hydraulic cylinder movement, the gap between each connecting component and insulator is eliminated, is reduced hydraulic
The idle stroke of cylinder.
Preferably, the reversal valve has rotatable spool, valve body is stretched out in spool one end, and swing rod is arranged in extension end,
For the commutation of reversal valve is manually operated.Switching operation is convenient, reliably.
Preferably, pallet is arranged on the cylinder body periphery of the hydraulic cylinder, there is plane at the top of pallet, set in plane
Set several brackets, fixed pump on bracket；There is gap between pump and cylinder body, reversal valve is set in gap.It is fixed, it is whole
Structure is simple, compact, and shape occupies little space, easy to carry to high altitude operation.
As a kind of equivalent program of above-mentioned swing rod technical solution, the reversal valve has rotatable spool, spool one
Valve body is stretched out at end, and rotating bar is arranged in extension end；The pallet side extends laterally, the translot of extension setting perforation frame body,
Translot is in bar shaped, is moved towards vertical with spool；Rotating bar is bent to pallet, and bending segment passes through translot, and supporter is arranged in end, and
Compressed spring is arranged on through section, compressed spring both ends bear against the strip groove on the extension of supporter and pallet and make
For the track of rotating bar, under the tension force effect of compressed spring, when overall work, rotating bar position is stablized, and does not easily lead to commutation
Valve commutation failure.
Preferably, arcuate socket is arranged in translot both ends, arc bore dia is greater than the width of translot；On the bending segment of rotating bar
It is arranged with taper sheath, between compressed spring and the extension of pallet, bottom is resisted against in compressed spring taper sheath；Cone
The bottom size of shape set is greater than translot both ends arc bore dia, head is less than translot both ends arc bore dia.Make rotating bar can be more
It is stably maintained in strip groove, the commutation states of reversal valve is made to be less susceptible to be interfered by external factor.
Preferably, being arranged with sliding sleeve, sliding sleeve on the rotating bar bending segment in the pallet other side relative to taper sheath
Diameter is less than translot width, and the head of one end and taper sheath offsets.Taper sheath is set to be easier to be detached from the arcuate socket at strip groove both ends,
More convenient operation.
Therefore, the present invention has the advantages that.
1, after being stuck on the two panels insulator steel cap of insulator front and back to be replaced, start hydraulic cylinder, closed fixture can be tightened；
Relative to Manual tightening closed fixture, the technical program is laborsaving, significantly reduces labor intensity, especially can provide bigger drawing
Power is suitable for large-scale, ultra-large type line upkeep maintenance.
2, using hand-operated tools or electric tool, the input shaft of transfer tube rotates, simple to operate, especially just
In high altitude operation.
3, the structure that two adjusting rods are screwed using release handle, the distance at closed fixture both ends of furthering before hydraulic cylinder starting, from
And the effective travel of hydraulic cylinder is saved, whole weight and volume is reduced, the convenience of high altitude operation is further increased.
Detailed description of the invention
Attached drawing 1 is a kind of structural schematic diagram of the invention.
Attached drawing 2 is the axonometric drawing of hydraulic cylinder.
Attached drawing 3 is hydraulic cylinder, reversal valve and a kind of schematic diagram for pumping assembling structure.
The top view of 4 attached drawing 3 of attached drawing.
Attached drawing 5 is the side view of attached drawing 4.
Attached drawing 6 is a kind of structural schematic diagram of rotating bar.
Attached drawing 7 is the hydraulic schematic diagram of hydraulic-driven in the present invention.
Attached drawing 8 is a kind of application schematic diagram of the invention.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment 1: a kind of replacement extra high voltage line strain insulator complexes of the present invention, such as attached drawing 1, attached drawing 2, attached drawing
Shown in 8 comprising: the clamping plate 51 of the insulator 52 of glass or porcelain on clamping transmission line of electricity；It is rotationally connected with external machine
The connector 1,5 of structure or the clamping plate 51；And hydraulic cylinder 2, there is a rod chamber and rodless cavity, setting resets bullet in rodless cavity
Spring；Pump 21 and reversal valve 23 are fixed on cylinder body periphery；The input shaft of pump 21 stretches out the pump housing, and extension end setting is lived with external establish
The interconnecting piece 3 of dynamic connection, for hand-operated tools or the driving input shaft rotation of 9 input power of electric tool；Wherein, hydraulic cylinder 2
Cylinder body connects a connector, and piston rod connects a connector.
Interconnecting piece 3 can be conventional movable connection structure, for example, for hexagonal hole or hexahedron or tetragonal body or four directions
Hole, on the extension end end face of the input shaft of pump 21.
Hydraulic cylinder 2 is single-acting cylinder, and the reset spring for pushing piston is set in rodless cavity；Reversal valve 23 is two four-way commutations
Valve, when being in home position, at least two mouthfuls of reversal valve 23 are communicated, and two communicated mouthful are separately connected two chambers of hydraulic cylinder 2；Reversal valve
When 23 commutation, the oil inlet of the rodless cavity connection pump 2 of hydraulic cylinder 2, the oil outlet of the rod chamber connection pump 2 of hydraulic cylinder 2, such as attached drawing
Shown in 7.
The cylinder body of hydraulic cylinder 2 is circle, and pallet 25 is arranged on periphery, has plane at the top of pallet 25, sets in plane
Set several brackets 22, fixed pump 21 on bracket 22；There is gap between pump 21 and cylinder body, reversal valve 23 is set in gap.It changes
There is rotatable spool to valve 23, valve body is stretched out in spool one end, and swing rod 26 is arranged in extension end, for reversal valve 23 is manually operated
Commutation.
Before hydraulic cylinder movement, if closed fixture need mobile distance it is excessive (such as before the insulator of clamping both ends, two
There are biggish gaps between end connector and insulator), then hydraulic cylinder needs to have biggish stroke, when will increase movement
Between, especially increase the volume and weight of hydraulic-driven part, not only increases cost, but also brought bigger difficulty for high altitude operation
Degree；In order to improve convenience, a kind of alternative preferred version is provided in the present invention, the one of 2 cylinder body both ends of hydraulic cylinder
On a connector, two adjusting rods 6,8 are equipped with, two adjusting boom ends are opposite, and screw thread is arranged in opposite both ends on the outer periphery,
Thread rotary orientation is opposite；Two ends of thread are combined with release handle 7.Before hydraulic cylinder starting, using release handle 7, closed fixture both ends of furthering
Distance, to reduce the stroke of hydraulic cylinder.
In use, clamping plate card before and after the insulator to be replaced on two panels insulator steel cap after, hand-operated tools or electricity can be used
Power driven tools, the input shaft rotation of transfer tube, can start hydraulic cylinder, closed fixture is tightened, as shown in Fig. 8.
According to technical solution provided by the present invention, replacement extra high voltage line strain insulator complexes is allowed to can be used for not
The replacement of same specification insulator, it is convenient and simple for operation, solve manual closed fixture can not be applied to requirement pulling force (20T or with
On) requirement, while mechanical execution, it is greatly convenient to provide for field operation, improves work efficiency, and reduces when having a power failure
Between, certain economic results in society can be obtained, the value with utilization and extention.
Embodiment 2: as shown in attached drawing 3, attached drawing 4, attached drawing 5, attached drawing 6, reversal valve 23 has rotatable spool, spool one
Valve body is stretched out at end, and rotating bar 27 is arranged in extension end；25 side of pallet extends laterally, the translot of extension setting perforation frame body
251, translot 251 is in bar shaped, is moved towards vertical with spool；Rotating bar 27 is bent to pallet 25, and bending segment passes through translot 251, end
End setting supporter 31, and compressed spring 30 is arranged on through section, 30 both ends of compressed spring are born against in 31 He of supporter
On the extension of pallet 25.For strip groove as 27 wobble tracks of rotating bar, rotating bar 27 is in strip groove both ends, corresponding commutation
The reset condition and switching state of valve；Rotating bar 27 is swung at strip groove both ends, the switching operation of all achievable reversal valve.Due to
The tension of compressed spring makes rotating bar 27 be pressed against strip groove both ends；This scheme, when operation, external factor is (for example, work as
When hand-operated tools or electric tool transfer tube, vibration caused by the pump housing) be not easy to cause the change in location of adjusting rod, i.e., it will not make
Reversal valve commutation failure.
Arcuate socket is arranged in 251 both ends of translot, and arc bore dia is greater than the width of translot 251；On the bending segment of rotating bar 27
It is arranged with taper sheath 29, for taper sheath 29 between compressed spring 30 and the extension of pallet 25, bottom is resisted against compression
On spring 30；The bottom size of taper sheath 29 is greater than 251 both ends arc bore dia of translot, head is less than 251 both ends arc of translot
Bore dia.This scheme be maintained at rotating bar 27 can more stably in strip groove, even if the commutation states of reversal valve are more steady
It is fixed, it is not easy to be interfered by external factor.
Relative to taper sheath 29, sliding sleeve 28, sliding sleeve are arranged on 27 bending segment of rotating bar in 25 other side of pallet
28 diameters are less than 251 width of translot, and one end and the head of taper sheath 29 offset.Taper sheath 29 is set to be detached from the arc at strip groove both ends
Shape hole, sliding sleeve 28 slide, and taper sheath 29 is ejected arcuate socket.
Remaining is the same as embodiment 1.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. a kind of replacement extra high voltage line strain insulator complexes, characterized by comprising:
Clamp the clamping plate (51) of insulator (52) on transmission line of electricity；
It is rotationally connected with the connector (1,5) of external agency or the clamping plate (51)；
And hydraulic cylinder (2), there is a rod chamber and rodless cavity, reset spring is set in rodless cavity；Cylinder body is fixed on periphery
Pump (21) and reversal valve (23)；The input shaft for pumping (21) stretches out the pump housing, the connection that extension end setting is flexibly connected with external foundation
Portion (3), for hand-operated tools or the driving input shaft rotation of electric tool (9) input power；
Wherein, the cylinder body of hydraulic cylinder (2) connects a connector, and piston rod connects a connector；The cylinder of the hydraulic cylinder (2)
Pallet (25) are set on external week, there is plane at the top of pallet (25), be arranged several brackets (22) in plane, bracket (22)
Upper fixed pump (21)；There is gap between pump (21) and cylinder body, reversal valve (23) are set in gap；Reversal valve (23) tool
There is rotatable spool, valve body is stretched out in spool one end, and rotating bar (27) are arranged in extension end；Laterally prolong pallet (25) side
It stretches, the translot (251) of extension setting perforation frame body, translot (251) is in bar shaped, is moved towards vertical with spool；Rotating bar (27) to
Pallet (25) bending, bending segment pass through translot (251), and supporter (31) are arranged in end, and compression bullet is arranged on through section
Spring (30), compressed spring (30) both ends are born against on the extension of supporter (31) and pallet (25).
2. a kind of replacement extra high voltage line strain insulator complexes according to claim 1, it is characterised in that: described
Hydraulic cylinder (2) is single-acting cylinder, and the reset spring for pushing piston is set in rodless cavity；When reversal valve (23) is in home position, change
It is communicated at least two mouthfuls of valve (23), two communicated mouthful are separately connected two chambers of hydraulic cylinder (2)；It is hydraulic when reversal valve (23) commutates
The oil inlet of the rodless cavity connection pump (2) of cylinder (2), the oil outlet of the rod chamber connection pump (2) of hydraulic cylinder (2).
3. a kind of replacement extra high voltage line strain insulator complexes according to claim 1, it is characterised in that: in liquid
On one connector at cylinder pressure (2) cylinder body both ends, two adjusting rods (6,8) are equipped with, two adjust opposite, the opposite both ends of boom end
Screw thread is arranged in portion on the outer periphery, and thread rotary orientation is opposite；Two ends of thread are combined with release handle (7).
4. a kind of replacement extra high voltage line strain insulator complexes according to claim 1 or 2 or 3, feature exist
In: the reversal valve (23) has rotatable spool, and valve body is stretched out in spool one end, and swing rod (26) are arranged in extension end, for hand
The commutation of dynamic operation reversal valve (23).
5. a kind of replacement extra high voltage line strain insulator complexes according to claim 1, it is characterised in that: translot
(251) arcuate socket is arranged in both ends, and arc bore dia is greater than the width of translot (251)；It is arranged on the bending segment of rotating bar (27)
Taper sheath (29), taper sheath (29) are located between compressed spring (30) and the extension of pallet (25), and bottom is resisted against pressure
On contracting spring (30)；The bottom size of taper sheath (29) is greater than translot (251) both ends arc bore dia, head is less than translot
(251) both ends arc bore dia.
6. a kind of replacement extra high voltage line strain insulator complexes according to claim 5, it is characterised in that: opposite
It is arranged with sliding sleeve (28) on taper sheath (29), rotating bar (27) bending segment in pallet (25) other side, sliding sleeve (28)
Diameter is less than translot (251) width, and the head of one end and taper sheath (29) offsets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710199363.6A CN107171241B (en) | 2017-03-29 | 2017-03-29 | A kind of replacement extra high voltage line strain insulator complexes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710199363.6A CN107171241B (en) | 2017-03-29 | 2017-03-29 | A kind of replacement extra high voltage line strain insulator complexes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107171241A CN107171241A (en) | 2017-09-15 |
| CN107171241B true CN107171241B (en) | 2018-12-04 |
Family
ID=59849724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710199363.6A Active CN107171241B (en) | 2017-03-29 | 2017-03-29 | A kind of replacement extra high voltage line strain insulator complexes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107171241B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052922A (en) * | 1976-12-01 | 1977-10-11 | Mine Safety Appliances Company | Hydraulically-actuated cable cutter |
| CN2177832Y (en) * | 1993-12-01 | 1994-09-21 | 钱祥生 | Integrated hydraulic power part |
| JP3531846B2 (en) * | 1995-06-27 | 2004-05-31 | 三和テッキ株式会社 | Hydraulic compressor |
| CN201699352U (en) * | 2010-06-08 | 2011-01-05 | 云南电网公司曲靖供电局 | Tool for electrified replacing linear monolithic insulator |
| CN203289008U (en) * | 2013-04-27 | 2013-11-13 | 国家电网公司 | Extra-high voltage tension insulator string dual-drive split-type closed fixture |
| CN204113814U (en) * | 2013-12-18 | 2015-01-21 | 柳州欧维姆机械股份有限公司 | Hydraulic actuator |
| CN204230773U (en) * | 2014-12-09 | 2015-03-25 | 国家电网公司 | For changing the hydraulic telescopic device of electric transmission line isolator |
| CN106159796B (en) * | 2016-08-11 | 2018-02-09 | 国网湖南省电力公司带电作业中心 | A kind of general closed type fixture and its application method for being used to change extra-high voltage insulator |
| CN106207866B (en) * | 2016-10-08 | 2018-09-28 | 台州市银点子知识产权服务有限公司 | A kind of cable stringing emergency repair method |
| CN206685801U (en) * | 2017-03-29 | 2017-11-28 | 国网浙江省电力公司金华供电公司 | One kind changes extra high voltage line strain insulator complexes |
-
2017
- 2017-03-29 CN CN201710199363.6A patent/CN107171241B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107171241A (en) | 2017-09-15 |
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Application publication date: 20170915 Assignee: Zhengjiang Sted Electronic Co., Ltd Assignor: Jinhua Power Supply Company, State Grid Zhejiang Electric Power Company Contract record no.: 2018330000124 Denomination of invention: Complete device for replacing ultra-high-voltage line tension insulator Granted publication date: 20181204 License type: Common License Record date: 20181224 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170915 Assignee: Jinhua Bada Group Co., Ltd. Science and Technology Information Branch Assignor: Jinhua Power Supply Company, State Grid Zhejiang Electric Power Company Contract record no.: 2018330000126 Denomination of invention: Complete device for replacing ultra-high-voltage line tension insulator Granted publication date: 20181204 License type: Common License Record date: 20181225 |