CN204967190U - Overhead transmission line suspension insulator slides and hangs groove device - Google Patents
Overhead transmission line suspension insulator slides and hangs groove device Download PDFInfo
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- CN204967190U CN204967190U CN201520736301.0U CN201520736301U CN204967190U CN 204967190 U CN204967190 U CN 204967190U CN 201520736301 U CN201520736301 U CN 201520736301U CN 204967190 U CN204967190 U CN 204967190U
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- Prior art keywords
- suspension insulator
- suspension
- transmission line
- equilibrium orbit
- overhead transmission
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- 239000000725 suspension Substances 0.000 title claims abstract description 81
- 239000012212 insulator Substances 0.000 title claims abstract description 69
- 230000005540 biological transmission Effects 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 230000033001 locomotion Effects 0.000 description 7
- 230000003068 static effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model discloses an overhead transmission line suspension insulator slides and hangs groove device, the bottom of suspension insulator hangs the overhead transmission wire, and the top hangs on iron tower tower head, is equipped with the stores pylon on iron tower tower head, is equipped with equilibrium orbit on the stores pylon, and equilibrium orbit is equipped with the difference in height, and the top of suspension insulator is equipped with balanced gyro wheel, and balanced gyro wheel is located on the equilibrium orbit. The utility model provides a dangle type shaft tower longitudinal unbalance tension automatically released's problem of heavy ice district high tension transmission line, promote the security of circuit by a wide margin, improve circuit ride quality and efficiency.
Description
Technical field
The utility model relates to the interconnection technique of high pressure overhead power line suspension insulator and steel tower.
Background technology
Up to the present, the connected mode of domestic high pressure overhead power line suspension insulator and steel tower is hanging hole and hangs, and insulator can be only that axle center is rotated with hanging hole.
In the ultra-high-tension power transmission line of heavy ice-covering area, the ice damage accident of falling tower of the overwhelming majority occurs on suspended pattern shaft tower, and the controlled load case that suspended pattern shaft tower more than 95% member structure calculates is the longitudinal unbalance tension force that the uneven icing of wire causes, namely heavy icing area overhead transmission line generation tower structure destruction and the accident of falling tower are caused by wire longitudinal unbalance tension overrunning substantially.
As the medium that wire tension transmits to shaft tower, conventional suspension insulator only can rotate centered by hanging hole, its side-play amount is quite limited, the wire longitudinal unbalance tension force that can offset is very little, when wire longitudinal unbalance tension force exceedes limiting design value, the case that suspended pattern shaft tower recurring structure destroys is of common occurrence, causes great security threat and economic damage to operation of power networks and the social people's livelihood.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of overhead transmission line suspension insulator slip hanging groove device, automatically eliminates overhead transmission line conductor unbalanced tensile force.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: overhead transmission line suspension insulator slip hanging groove device, the bottom of suspension insulator hangs overhead power transmission conducting wire, top is suspended on steel tower tower head, described steel tower tower head is provided with hanger, and described hanger is provided with equilibrium orbit, and described equilibrium orbit is provided with difference in height, the top of described suspension insulator is provided with balance rollers, and described balance rollers is located on equilibrium orbit.
Preferably, three suspension insulators are the distribution of Y type, and described hanger is provided with a pair, and two suspension insulators of upside connect with corresponding hanger respectively.
Preferably, described hanger comprises two blocks of U-type groove steel, and the opening direction of two blocks of U-type groove steel is contrary, and described equilibrium orbit is the rail groove that U-type groove steel bottom surface is offered along its length, and balance rollers is located in rail groove.
Preferably, the top of described suspension insulator is provided with suspension member, and described suspension member hangs screw rod through one, and described suspension screw rod is provided with balance rollers.
Preferably, described suspension member comprises lower link plate and upper hanging plate, and described suspension screw rod activity is through upper hanging plate, and described lower link plate and upper hanging plate are transferred.
Preferably, the overall V-shaped structure of described hanger, described equilibrium orbit is V-shaped structure also.
Wherein, when overhead power transmission conducting wire both sides do not have a unbalanced tensile force, suspension insulator is in vertical state; When overhead power transmission conducting wire both sides produce unbalanced tensile force, suspension insulator starts to offset to tension force larger side; When the longitudinal unbalance tension force of overhead power transmission conducting wire exceedes set point, suspension insulator is starting to slide under the effect of unbalanced tensile force along equilibrium orbit direction component, the overhead power transmission conducting wire length of suspension insulator both sides changes, and tension force larger side line length increases, and tension force reduces thereupon; Tension force smaller side line length reduces, and tension force increases thereupon, and after the tension force of both sides reaches dynamic equilibrium, suspension insulator restores balance state; When the unbalanced tensile force of suspension insulator both sides reduces or eliminates, under the tension force effect and overhead power transmission conducting wire Gravitative Loads of both sides line length inequality, suspension insulator slides to equilibrium orbit minimum point, finally gets back to mid point and recovers initial equilibrium conditions.
The utility model solves the problem that heavy icing area ultra-high-tension power transmission line suspended pattern shaft tower longitudinal unbalance tension force discharges automatically, adopts the beneficial effect after the utility model:
(1) under economic index does not have vicissitudinous prerequisite, significantly improve the ability of heavy icing area ultra-high-tension power transmission line suspended pattern shaft tower opposing longitudinal unbalance tension force, thus significantly promote the fail safe of circuit;
(2) effectively can reduce the tower weight index of heavy icing area suspended pattern shaft tower under the prerequisite determined in design icing value, improve circuit economy;
(3) this device can according to actual conditions auto-action in circuit repeatedly icing, deicing processes, need not Manual intervention resetting, improves circuit running quality and efficiency.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Fig. 1 is the scheme of installation of slip hanging groove on steel tower;
Fig. 2 is slip hanging groove structural representation;
Fig. 3 is the connection implementation schematic diagram of suspension insulator and slip hanging groove;
Fig. 4 a is force analysis Fig. 1 of suspension insulator mechanism in V-type equilibrium orbit;
Fig. 4 b is force analysis Fig. 2 of suspension insulator mechanism in V-type equilibrium orbit;
Fig. 4 c is force analysis Fig. 3 of suspension insulator mechanism in V-type equilibrium orbit;
Fig. 4 d is force analysis Fig. 4 of suspension insulator mechanism in V-type equilibrium orbit;
Fig. 4 e is force analysis Fig. 5 of suspension insulator mechanism in V-type equilibrium orbit;
Fig. 4 f is force analysis Fig. 6 of suspension insulator mechanism in V-type equilibrium orbit.
Embodiment
As shown in Figure 1, suspension insulator is made up of three suspension insulators 1 distributed in Y type, and wherein two suspension insulators 1 of upside are suspended on steel tower tower head 3, and the bottom of suspension insulator 1 hangs overhead power transmission conducting wire 4.
As shown in Figure 1 to Figure 3, in order to offset the longitudinal unbalance tension force of overhead power transmission conducting wire 4, steel tower tower head 3 is provided with hanger 2, hanger 2 is provided with equilibrium orbit, equilibrium orbit is provided with difference in height, and the top of suspension insulator 1 is provided with balance rollers 12, and balance rollers 12 is located on equilibrium orbit.When the longitudinal unbalance tension force of overhead power transmission conducting wire 4 occurs, balance rollers 12 slides along equilibrium orbit, automatically eliminates the longitudinal unbalance tension force of overhead power transmission conducting wire 4.
Concrete, described hanger 2 is provided with a pair, and in suspension insulator, two suspension insulators 1 of upside connect with corresponding hanger 2 respectively.Described hanger 2 comprises two blocks of U-type groove steel, and the opening direction of two blocks of U-type groove steel is contrary, and described equilibrium orbit is the rail groove 21 that U-type groove steel bottom surface is offered along its length, and balance rollers 12 is located in rail groove.U-type groove steel side is fixed by set bolt 31 and the shaped steel on steel tower tower head 3, or also can be welded and fixed.
Suspension member is provided with on the top of suspension insulator 1, suspension member hangs screw rod 11 through one, hang screw rod 11 and be provided with a pair balance rollers 12, this pair balance rollers 12 is separately positioned in the rail groove 21 of two blocks of U-type groove steel, and balance rollers 12 directly can select rolling bearing.
Described suspension member comprises lower link plate 14 and upper hanging plate 13, upper hanging plate 13 is movable switchings with hanging screw rod 11, with between link plate 14 and upper hanging plate 13 being also movable switching at present, and both rotation directions are mutually vertical, can do the relative motion compared with general orientation between such suspension insulator 1 and hanger 2.
Described upper hanging plate 13 is U-shaped structure, the U-shaped mouth of upper hanging plate 13 upward, described suspension screw rod 11 is through the U-shaped mouth both sides of upper hanging plate, upper hanging plate upper end is positioned at the gap of two blocks of U-type groove steel, two balance rollers 12 positions are fixed, and between upper hanging plate 13 and U-type groove steel, gap is determined and can ensure that balance rollers 12 slides to deviate from along rail groove 21 always.The upper end of described lower link plate is provided with ball screw 15, and described ball screw 15 is located at the U-shaped bottom inside of upper hanging plate.
The overall V-shaped structure of described hanger 2 (along hanger length direction), described equilibrium orbit is V-shaped structure (along equilibrium orbit bearing of trend) also, certain equilibrium orbit also can be arc-shaped structure, difference in height can be produced equally in the orbital plane of equilibrium orbit, when the longitudinal unbalance tension force of overhead power transmission conducting wire 4 occurs, by the balancing out motions longitudinal unbalance tension force of balance rollers 12 along equilibrium orbit, and difference in height can be passed through simultaneously, recover initial equilibrium conditions.
Specifically, overhead transmission line suspended pattern shaft tower longitudinal unbalance tension force release principle is: when overhead power transmission conducting wire both sides do not have unbalanced tensile force, suspension insulator is in vertical state; When overhead power transmission conducting wire both sides produce unbalanced tensile force due to uneven icing or other reason, suspension insulator starts to offset to tension force larger side; When the longitudinal unbalance tension force of overhead power transmission conducting wire exceedes set point, suspension insulator starts to slide under the effect of unbalanced tensile force along equilibrium orbit direction component, the overhead power transmission conducting wire length of suspension insulator both sides changes, and tension force larger side line length increases, and tension force reduces thereupon; Tension force smaller side line length reduces, and tension force increases thereupon, and after the tension force of both sides reaches dynamic equilibrium, suspension insulator restores balance state; When the unbalanced tensile force of suspension insulator both sides reduces or eliminates, under the tension force effect and overhead power transmission conducting wire Gravitative Loads of both sides line length inequality, suspension insulator slides to equilibrium orbit minimum point, finally gets back to mid point (bottom V-type) and recovers initial equilibrium conditions.
Below in conjunction with suspension insulator force analysis figure of mechanism in V-type track, its mechanism is described further.
Fig. 4 a: suspension insulator both sides overhead power transmission conducting wire is without unbalanced tensile force, and hanging point is only by the vertical force of one group of balance: the i.e. holding power N of overhead power transmission conducting wire deadweight G and V-type rail groove, now suspension insulator is in poised state in rail groove.
Fig. 4 b: suspension insulator side is by overhead power transmission conducting wire unbalanced tensile force T, it is vertical with overhead power transmission conducting wire icing is F than what carry G with joint efforts, when along rail groove direction, component is upwards less than the static friction f of balance rollers and rail groove to F, suspension insulator still keeps balance in rail groove.
Fig. 4 c: when component is upwards greater than static friction (being dynamic friction after the setting in motion) f of equilibrium orbit and chute to F along rail groove direction, suspension insulator starts to move to tension force larger side in rail groove, due to line length change, the tension force of tension force larger side declines to some extent, the overhead power transmission conducting wire tension force of tension force smaller side rises to some extent, and the longitudinal unbalance tension force of suspension insulator both sides starts to reduce.
Fig. 4 d, 4e: due to the motion of suspension insulator in rail groove, longitudinal unbalance tension force continuous decrease, to F along rail groove direction during dynamic friction (being static friction after the stop motion) f of component upwards and balance rollers and chute, suspension insulator is stop motion in rail groove, and restore balance state;
Fig. 4 f: decline because the reasons such as even icing rate reduction cause longitudinal unbalance tension force (being that limiting condition and uneven tension force are complete in figure), when being greater than static friction (being dynamic friction after the setting in motion) f of balance rollers and rail groove to the component Fx that F is downward along rail groove direction, suspension insulator starts to move to central point in rail groove, until when unbalanced tensile force drops in acceptable scope, the poised state of Fig. 4 a can be recovered.
Above-described embodiment just coordinates for Y type suspension insulator hanger parallel with two explains, but the utility model is not limited to above-described embodiment, as the distortion of above-described embodiment, suspension insulator also can be other forms such as V-type, I type, certainly, according to the variation of insulator string, the quantity of hanger and distribution form also correspondence make change, such as only can arrange a hanger.
Claims (5)
1. overhead transmission line suspension insulator slip hanging groove device, the bottom of suspension insulator hangs overhead power transmission conducting wire, top is suspended on steel tower tower head, it is characterized in that: described steel tower tower head is provided with hanger, described hanger is provided with equilibrium orbit, described equilibrium orbit is provided with difference in height, and the top of described suspension insulator is provided with balance rollers, and described balance rollers is located on equilibrium orbit.
2. overhead transmission line suspension insulator slip hanging groove device according to claim 1, is characterized in that: three suspension insulators are the distribution of Y type, and described hanger is provided with a pair, and two suspension insulators of upside connect with corresponding hanger respectively.
3. overhead transmission line suspension insulator slip hanging groove device according to claim 2, it is characterized in that: described hanger comprises two blocks of U-type groove steel, the opening direction of two blocks of U-type groove steel is contrary, described equilibrium orbit is the rail groove that U-type groove steel bottom surface is offered along its length, and balance rollers is located in rail groove.
4. overhead transmission line suspension insulator slip hanging groove device according to claim 3, is characterized in that: the top of described suspension insulator is provided with suspension member, and described suspension member hangs screw rod through one, and described suspension screw rod is provided with balance rollers.
5. overhead transmission line suspension insulator slip hanging groove device according to claim 4, is characterized in that: described suspension member comprises lower link plate and upper hanging plate, and described suspension screw rod activity is through upper hanging plate, and described lower link plate and upper hanging plate are transferred.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520736301.0U CN204967190U (en) | 2015-09-22 | 2015-09-22 | Overhead transmission line suspension insulator slides and hangs groove device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520736301.0U CN204967190U (en) | 2015-09-22 | 2015-09-22 | Overhead transmission line suspension insulator slides and hangs groove device |
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| Publication Number | Publication Date |
|---|---|
| CN204967190U true CN204967190U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520736301.0U Active CN204967190U (en) | 2015-09-22 | 2015-09-22 | Overhead transmission line suspension insulator slides and hangs groove device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262031A (en) * | 2015-08-27 | 2016-01-20 | 国网浙江省电力公司湖州供电公司 | Sliding type hanging slot device for suspension insulator of overhead transmission line |
-
2015
- 2015-09-22 CN CN201520736301.0U patent/CN204967190U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262031A (en) * | 2015-08-27 | 2016-01-20 | 国网浙江省电力公司湖州供电公司 | Sliding type hanging slot device for suspension insulator of overhead transmission line |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |