CN208753834U - ± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument - Google Patents
± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument Download PDFInfo
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- CN208753834U CN208753834U CN201821643907.XU CN201821643907U CN208753834U CN 208753834 U CN208753834 U CN 208753834U CN 201821643907 U CN201821643907 U CN 201821643907U CN 208753834 U CN208753834 U CN 208753834U
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- card
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- yoke plate
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Abstract
This patent discloses one kind ± 1100kV DC power transmission lines to replace strain insulator-string overhang insulation sub- instrument, the double tightening systems of the frame-type being made of end card (9), closed fixture and two hydraulic tighteners；The core of the card (10) are provided in card (9) in end, arc groove (19) and skewed slot (20) are provided on the cylinder end face of the core of the card (10) projecting end card (9), the both ends for the connection bolt connecting on arc groove (19) and L-type yoke plate (3) with insulator chain are adapted, and the skewed slot (20) of the core of the card (10) passes through the connection bolt both ends for making the curved opening of arc groove (19) be held in L-type yoke plate (3) Yu insulator chain junction after L-type yoke plate (3)；Its advantage is that: structure is simple, and construction personnel's working strength is low on overhead insulation substring, and end card can not only replace cross-arm-end first insulator, can also be with restringing end first insulator.
Description
Technical field
This patent is related to a kind of UHV transmission line maintenance tool, especially one kind ± 1100kV DC power transmission line
Replace strain insulator-string overhang insulation sub- instrument.
Background technique
With the continuous development of China's electric power transmission line, the voltage class of transmission line of electricity is higher and higher, required gold
Weight, the intensity of the construction equipment such as tool are also increasing, especially for newly-built ± 1100kV extra high voltage direct current transmission line,
Used connection type is also very different with original route, the design strength, external form of shaft tower, fitting, attachment of route etc.
Size, stress levels etc. are substantially improved than former supertension line.The insulation of ± 1100kV extra high voltage direct current transmission line strain insulator
Substring is generally six strings or eight strings arrangement, whether six strings or eight insulator strings, typically two string insulation
Son is arranged in parallel between two L-type yoke plates for one group, as shown in Figure 1, the rear end (i.e. cross-arm-end) of two of them insulator chain
The two sides of cross-arm-end L-type yoke plate 3: the bulb insertion insulator of ball-clevis 5 are connected to by ball-clevis 5 and right angle hanging plate 4
By R pin locked in ball-and-socket on steel cap, the other side of ball-clevis 5 is connect with one end of right angle hanging plate 4, right angle hanging plate 4
The other end is bolted on L-type yoke plate 3；The front end (i.e. conductor wire end) of two insulator chains is connected by socket-clevis eye 7
In the two sides of conductor wire end L-type yoke plate 3: on the bulb that the bowl head of socket-clevis eye 7 is connected to insulator, the other side of socket-clevis eye 7
It is bolted on L-type yoke plate 3；The L-type yoke plate 3 of two insulator chain rear ends is connected to by U-shaped link 1 and link 2
On cross arm of tower, the L-type yoke plate 3 of two insulator chain front ends is connect by U-shaped link 1 and strain clamp 8 with conducting wire.Due to leading
Line self weight and the tension born are big, and insulator chain length and tonnage are big, and the tension that strain insulator string used is born substantially mentions
It rises, when replacing strain insulator string end monolithic insulator (including cross-arm-end and conductor wire end) due to the position of first insulator
It is special to set, and connection type is different from original route, is unable to complete, is needed using original extra high voltage line replacing insulator Work tool
For cross-arm-end and conductor wire end design and different special tool(s)s is used, but since replacement insulation sub- instrument weight is big, volume is big,
Tool operates replacement inconvenience in high altitude operation, so restringing end and cross-arm-end first insulator work difficulty are very big.
Summary of the invention
The object of the invention is to design one kind ± 1100kV DC power transmission line replacement strain insulator-string overhang insulation sub- instrument,
For replacing strain insulator string head and the tail monolithic insulator, strain insulator string conductor wire end first insulation can be not only replaced
Son can also replace strain insulator string cross-arm-end first insulator.
± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument, it is characterized in that: by end card, closed fixture
And the double tightening systems of frame-type that two hydraulic tighteners are constituted, two hydraulic tighteners are located at the two sides of frame-type, the two of end card
End is connect with one end of two hydraulic tighteners respectively, and the both ends of closed fixture connect with the other end of two hydraulic tighteners respectively
It connects；Cylindrical the core of the card is provided in the card of end, the core of the card is placed in the cylindrical deck among the card of end, the core of the card cylindrical surface
On be provided with locking slot, be provided with screw hole on the hole wall of end card cylinder deck, mark closely after screw screws in the screw hole
Being held in the locking slot on the core of the card is fixedly connected with the core of the card with end card；It is arranged on the cylinder end face of the core of the card projecting end card
There are arc groove and skewed slot, skewed slot penetrates through in the core of the card diametrical direction, and the width of skewed slot is slightly larger than the thickness of L-type yoke plate, skewed slot
Bottom surface relative to the core of the card end face be inclined-plane, what is connect on arc groove and L-type yoke plate with insulator chain connects the both ends of bolt
It is adapted, the skewed slot of the core of the card, which passes through, to be made the curved opening of arc groove be held in L-type yoke plate after L-type yoke plate to connect with insulator chain
The connection bolt both ends at place；
The openable and closable clamshell card that the closed fixture is made of card body, Ka Gai, card body and Ka Gai form card slot, in card
The cutting ferrule of clamping insulator steel cap is provided in slot, the cavity shape of cutting ferrule is adapted with the shape of insulator steel cap；Closed fixture
To block after card before replacement insulator closed fixture or closed fixture；
The hydraulic tightener is made of hydraulic cylinder, connecting rod and hydraulic handle, and hydraulic handle is arranged on hydraulic cylinder, liquid
One end of cylinder pressure and one end of end card are bolted, and the other end of hydraulic cylinder is fixedly connected with one end of connecting rod, connecting rod
The other end and closed fixture one end connect.
The invention has the advantages that structure is simple, construction personnel's working strength is low on overhead insulation substring, and end card is not only
Cross-arm-end first insulator can be replaced, conductor wire end first insulator can also be taken into account, tool needs type few, universal
By force.
Detailed description of the invention
Fig. 1: the general duplex string insulator structural schematic diagram of ± 1100kV DC power transmission line；
Fig. 2: replacement cross-arm-end first insulator schematic diagram；
Fig. 3: restringing end first insulator schematic diagram；
Fig. 4: the connection on the core of the card and conductor wire end L-type yoke plate is bolted schematic diagram；
Fig. 5: the core of the card main view；
Fig. 6: the core of the card right view；
In figure, 1-U type link, 2- link, 3-L type yoke plate, the right angle 4- hanging plate, 5- ball-clevis, 6- insulator, 7- bowls of heads
Hanging plate, 8- strain clamp, the end 9- card, 10- the core of the card, 11- hydraulic handle, 12- hydraulic cylinder, 13- connecting rod block before 14- closed fixture,
Card cutting ferrule before 15- blocks after 16- closed fixture, card cutting ferrule after 17-, 18- locking slot, 19- arc-shaped slot, 20- skewed slot.
Specific embodiment
As shown in Figure 2 and Figure 3, ± 1100kV DC power transmission line described in this patent replaces strain insulator-string overhang insulation sub- instrument,
The double tightening systems of the frame-type being made of end card 9, closed fixture and two hydraulic tighteners, the closed fixture are that common replacement is exhausted
Block 16 after card 14 or closed fixture before the closed fixture of edge, the openable and closable clamshell card that closed fixture is made of card body, Ka Gai,
Ka Gai forms card slot after fastening on card body between Ka Gai and card body, and the cutting ferrule of clamping insulator is provided in card slot, card
The cavity shape of set is adapted with the shape of insulator steel cap；Two hydraulic tighteners are located at the two sides of frame-type, and the two of end card 9
End respectively with one end of two hydraulic tighteners by bolt rigid connection, the both ends of closed fixture respectively with two hydraulic tighteners
The other end connection；The hydraulic tightener is made of hydraulic cylinder 12, connecting rod 13 and hydraulic handle 11, and hydraulic handle 11 is arranged
For manipulating hydraulic cylinder 12 on hydraulic cylinder 12, act hydraulic stem telescopic rod, one end of hydraulic cylinder 12 and one end of end card 9
It is rigidly connected by bolt, the other end of hydraulic cylinder 12 is fixedly connected with one end of connecting rod 13, the other end and enclosed of connecting rod 13
One end of card is rigidly connected by bolt.
Cylindrical the core of the card 10 is provided in end card 9, the core of the card 10 is placed in the cylindrical deck among end card 9
Interior, as shown in 5, Fig. 6, the core of the card is provided with locking slot 18 on 10 cylindrical surface, is provided on the hole wall of the cylindrical deck of end card 9
Screw hole, marking closely screw and screwing in after the screw hole to mark closely makes the core of the card 10 and end card 9 fixed in the locking slot 18 on the core of the card 10
Connection；Arc groove 19 and skewed slot 20 are provided on the cylinder end face of 10 projecting end card 9 of the core of the card, skewed slot 20 is in the core of the card 10
It is penetrated through in diametrical direction, the arc axis of arc groove 19 is vertical with the side of skewed slot 20, and the width of skewed slot 20 joins slightly larger than L-type
The thickness of plate 3, the bottom surface of skewed slot 20 are inclined-plane relative to the end face of the core of the card 10, on arc groove 19 and L-type yoke plate 3 with insulator
The both ends for the connection bolt that series winding connects are adapted, and the skewed slot 20 of the core of the card 10 opens the arc of arc groove 19 after passing through L-type yoke plate 3
Mouth is held in the connection bolt both ends of L-type yoke plate 3 Yu insulator chain junction；As shown in figure 4, the arc groove 19 of the core of the card 10 blocks
It holds at the both ends of the connection bolt of the socket-clevis eye 7 and L-type yoke plate 3 of conductor wire end L-type yoke plate 3 Yu 6 junction of insulator.
When needing replacing the first insulator of cross-arm-end on insulator chain, as shown in Fig. 2, operator is in insulator
On string, operation hydraulic handle 11 extends the hydraulic telescopic rod of hydraulic cylinder 12, and hydraulic tightener relaxation makes end card 9 and enclosed
Card the distance between 14 is elongated before card, and the holding screw on end card 9 is unscrewed, the skewed slot 20 of the core of the card 10 pass through L-type yoke plate 3 with
The connection bolt top of 4 junction of right angle hanging plate, make the curved opening of the arc groove 19 of the core of the card 10 be held in L-type yoke plate 3 with
The both ends head of the connection bolt of 4 junction of right angle hanging plate blocks card 14 before closed fixture the Ka Gai opening of card 14 before closed fixture
It holds on the steel cap of second insulator 6 of cross-arm-end, the inner cavity of preceding card cutting ferrule 15 is adapted with the steel cap shape of insulator 6；It adjusts
The angle of whole good fixture, then block 14 before locking closed fixture, tightening the holding screw on end card 9 makes the core of the card 10 be fixed on end card
On 9；The hydraulic handle 11 for adjusting two sides respectively again, shrinks the hydraulic telescopic rod of hydraulic cylinder 12, blocks before end card 9 and closed fixture
The distance between 14 become smaller, and the tension acted on second insulator 6 and L-type yoke plate 3 is made to be transferred to end card 9 and closed fixture
On preceding card 14, replaced after the relaxation of first insulator 3.It period, can be by adjusting the clamp screw between the core of the card 10 and end card 9
Nail makes end card 9 rotate angle relative to the core of the card 10, holding screw is tightened again after selecting suitable angle, in order to operate.
When needing replacing the first insulator of conductor wire end on insulator chain, as shown in figure 3, operator is in insulator
On string, operation hydraulic handle 11 extends the hydraulic telescopic rod of hydraulic cylinder 12, and hydraulic tightener relaxation makes end card 9 and enclosed
Card the distance between 16 is elongated after card, and the holding screw on end card 9 is unscrewed, the skewed slot 20 of the core of the card 10 pass through L-type yoke plate 3 with
The connection bolt top of 7 junction of socket-clevis eye, make the curved opening of the arc groove 19 of the core of the card 10 be held in L-type yoke plate 3 with
The both ends head of the connection bolt of 7 junction of socket-clevis eye blocks card 16 after closed fixture the Ka Gai opening of card 16 after closed fixture
It holds on the steel cap of second insulator 6 of conductor wire end, the inner cavity of rear card cutting ferrule 17 is adapted with the steel cap shape of insulator 6；It adjusts
The angle of whole good fixture, then block 16 after locking closed fixture, tightening the holding screw on end card 9 makes the core of the card 10 be fixed on end card
On 9；The hydraulic handle 11 for adjusting two sides respectively again, shrinks the hydraulic telescopic rod of hydraulic cylinder 12, blocks after end card 9 and closed fixture
The distance between 16 become smaller, and the tension acted on second insulator 6 and L-type yoke plate 3 is made to be transferred to end card 9 and closed fixture
Afterwards on card 16, replaced after the relaxation of first insulator 3.It period, can be by adjusting the clamp screw between the core of the card 10 and end card 9
Nail makes end card 9 rotate angle relative to the core of the card 10, holding screw is tightened again after selecting suitable angle, in order to operate.
Certainly, card 16 is identical after blocking 14 and closed fixture before closed fixture in actual operation, is general closed fixture, only selects
With different cutting ferrules, it is connected by screw between closed fixture and preceding card cutting ferrule 15 and rear card cutting ferrule 17 and is conveniently replaced in high-altitude,
Preceding card cutting ferrule 15 can make (the i.e. insulator steel cap end) clamping backward of insulator 7, for replacing cross-arm-end first insulator 6；Afterwards
Card cutting ferrule 17 can make (the i.e. insulator pin end) clamping forward of insulator 7, be used for restringing end first insulator 6.
Claims (3)
1. ± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument, it is characterized in that: by end card (9), enclosed
The double tightening systems of frame-type that card and two hydraulic tighteners are constituted, two hydraulic tighteners are located at the two sides of frame-type, end card (9)
Both ends connect respectively with one end of two hydraulic tighteners, the both ends of the closed fixture other end with two hydraulic tighteners respectively
Connection；Cylindrical the core of the card (10) is provided in card (9) in end, the core of the card (10) is placed in the intermediate cylinder of end card (9)
In deck, locking slot (18) are provided on the core of the card (10) cylindrical surface, are provided with spiral shell on the hole wall of the cylindrical deck of end card (9)
Nail hole, marking closely screw and screwing in the locking slot (18) being held on the core of the card (10) after the screw hole makes the core of the card (10) and end card
(9) it is fixedly connected；Arc groove (19) and skewed slot (20) are provided on the cylinder end face of the core of the card (10) projecting end card (9),
Skewed slot (20) penetrates through in the core of the card (10) diametrical direction, and the width of skewed slot (20) is slightly larger than the thickness of L-type yoke plate (3), skewed slot
(20) bottom surface is inclined-plane relative to the core of the card (10) end face, is connect on arc groove (19) and L-type yoke plate (3) with insulator chain
The both ends of connection bolt are adapted, and the skewed slot (20) of the core of the card (10) opens the arc of arc groove (19) after passing through L-type yoke plate (3)
Mouth is held in the connection bolt both ends of L-type yoke plate (3) Yu insulator chain junction.
2. ± 1100kV DC power transmission line according to claim 1 replaces strain insulator-string overhang insulation sub- instrument, feature
Be: the openable and closable clamshell card that the closed fixture is made of card body, Ka Gai, card body and Ka Gai form card slot, in card slot
It is provided with the cutting ferrule of clamping insulator steel cap, the cavity shape of cutting ferrule is adapted with the shape of insulator steel cap；Closed fixture is more
Block card (16) after (14) or closed fixture before changing insulator closed fixture.
3. ± 1100kV DC power transmission line according to claim 1 replaces strain insulator-string overhang insulation sub- instrument, feature
Be: the hydraulic tightener is made of hydraulic cylinder (12), connecting rod (13) and hydraulic handle (11), and hydraulic handle (11) setting exists
On hydraulic cylinder (12), one end of hydraulic cylinder (12) and one end of end card (9) are bolted, the other end of hydraulic cylinder (12)
It is fixedly connected with one end of connecting rod (13), the other end of connecting rod (13) and one end of closed fixture connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643907.XU CN208753834U (en) | 2018-10-10 | 2018-10-10 | ± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643907.XU CN208753834U (en) | 2018-10-10 | 2018-10-10 | ± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208753834U true CN208753834U (en) | 2019-04-16 |
Family
ID=66085635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821643907.XU Expired - Fee Related CN208753834U (en) | 2018-10-10 | 2018-10-10 | ± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208753834U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323694A (en) * | 2019-07-09 | 2019-10-11 | 云南电网有限责任公司带电作业分公司 | A kind of operational method for charged for replacement 550kN large-tonnage strain cross arm side monolithic insulator |
| CN111276899A (en) * | 2020-03-05 | 2020-06-12 | 国网湖北省电力有限公司检修公司 | Special fixture for robot for live replacement of strain insulator single sheet of extra-high voltage line |
| CN111430089A (en) * | 2020-01-21 | 2020-07-17 | 国网浙江省电力有限公司湖州供电公司 | Perpendicular two strain insulator string that hang some pair and hang and establish device |
-
2018
- 2018-10-10 CN CN201821643907.XU patent/CN208753834U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323694A (en) * | 2019-07-09 | 2019-10-11 | 云南电网有限责任公司带电作业分公司 | A kind of operational method for charged for replacement 550kN large-tonnage strain cross arm side monolithic insulator |
| CN111430089A (en) * | 2020-01-21 | 2020-07-17 | 国网浙江省电力有限公司湖州供电公司 | Perpendicular two strain insulator string that hang some pair and hang and establish device |
| CN111430089B (en) * | 2020-01-21 | 2021-11-09 | 国网浙江省电力有限公司湖州供电公司 | Perpendicular two strain insulator string that hang some pair and hang and establish device |
| CN111276899A (en) * | 2020-03-05 | 2020-06-12 | 国网湖北省电力有限公司检修公司 | Special fixture for robot for live replacement of strain insulator single sheet of extra-high voltage line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190416 Termination date: 20191010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |