CN211046394U - Wind deflection prevention semi-V-shaped suspension string - Google Patents
Wind deflection prevention semi-V-shaped suspension string Download PDFInfo
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- CN211046394U CN211046394U CN201922180168.6U CN201922180168U CN211046394U CN 211046394 U CN211046394 U CN 211046394U CN 201922180168 U CN201922180168 U CN 201922180168U CN 211046394 U CN211046394 U CN 211046394U
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Abstract
The utility model discloses a prevent wind partly with half V type cluster that dangles, from the bottom up in proper order including the yoke plate that dangles, yoke plate, pillar insulator string and I type insulator string, the iron tower cross arm, the yoke plate connection yoke plate dangles, the yoke plate respectively with pillar insulator string with I type insulator string connects, pillar insulator string lower extreme with I type insulator string lower extreme is the acute angle contained angle, pillar insulator string with I type insulator string all is connected with the iron tower cross arm, I type insulator string with the iron tower cross arm is connected perpendicularly. The structure can ensure that the air gap between the wire and the iron tower does not exceed the limit under severe meteorological conditions such as sand storm and the like, thereby being suitable for the side phase of the power transmission line straight line iron tower in a gale area, preventing the windage yaw flashover of the overhead power transmission line, avoiding the power failure accident of large area and improving the power supply reliability of the power grid.
Description
Technical Field
The utility model relates to an overhead transmission line tangent tower insulator chain that dangles specifically is a strong wind area, and especially the structure of overhead transmission line windage flashover accident is prevented to the easy district that sends out of sand and dust storm.
Background
More and more areas passing through the severe conditions of the overhead transmission line are not only attacked by rainstorm and thunder, but also affected by strong wind, and the insulator string swings greatly, so that the probability of wind deflection flashover is greatly improved. Once windage yaw flashover occurs, the success rate of superposition of the power transmission network is low, and is about 25% according to relevant literature display, so that large-area power failure accidents are caused, great harm is brought to life and production of people, and great economic loss is brought to the country. And after windage yaw accidents occur, the occurrence place of the fault is difficult to accurately and quickly judge, and great troubles are brought to the operation and maintenance work of the high-voltage transmission line.
The wind deflection comprises jumper wire wind deflection, interphase wind deflection and insulator wind deflection, and the jumper wire wind deflection means that a jumper wire of the corner tower is influenced by strong wind, so that the gap between the jumper wire and the corner tower is shortened, and jumper wire discharge is formed; the interphase wind bias means that the electrical distance between the wires is shortened under the condition of strong wind, so that the wires of different phases are discharged; the insulator windage yaw generally refers to the inclination angle of an insulator string relative to a linear tower under the action of wind power. Among them, the wind deflection of the insulator string is the most main factor causing the wind deflection trip accident.
The direct reason for the occurrence of the wind deflection tripping accident is that the wind deflection angle of the suspension insulator string is too large, the air gap between a charged body at the lower end of the insulator string and an iron tower is easily reduced when the wind deflection angle is too large, and the flashover phenomenon can occur when the electrical strength of the gap cannot bear the operating voltage of a system. Therefore, the air gap between the wire and the iron tower is not over-limited under severe meteorological conditions such as sand storm and the like, and the method is a main means for preventing windage yaw flashover accidents. There is therefore a need for a new suspension insulator string pattern to prevent windage flashover accidents.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the utility model provides a prevent wind partly with half V type cluster that dangles, the air gap that can guarantee between wire and the iron tower of this structure is not transfinite under bad meteorological conditions such as sand storm to can be applicable to the transmission line straight line iron tower limit looks in strong wind area, prevent overhead transmission line wind partly flashover, avoid resulting in the power failure accident of large tracts of land, improve the electric wire netting power supply reliability.
The utility model adopts the technical scheme as follows:
the utility model provides a prevent wind cluster that dangles with half V type, from the bottom up includes the yoke plate that dangles in proper order, yoke plate, pillar insulator chain and I type insulator chain, iron tower cross arm, the yoke plate connection yoke plate dangles, the yoke plate respectively with pillar insulator chain with I type insulator chain connects, pillar insulator chain lower extreme with I type insulator chain lower extreme is the acute angle contained angle, pillar insulator chain with I type insulator chain all with the iron tower cross arm, I type insulator chain with the iron tower cross arm is connected perpendicularly.
Preferably, grading rings are arranged on the upper part and the lower part of the I-shaped insulator string; and equalizing rings are arranged on the upper part and the lower part of the pillar insulator string.
Preferably, the upper portion of I type insulator string is connected with I type cluster little equalizer ring, pillar insulator string upper portion is connected with pillar cluster little equalizer ring, be connected with big equalizer ring on the yoke plate, big equalizer ring arranges I type insulator string lower part with the lower part of pillar insulator string.
Preferably, the large equalizing ring comprises a saddle-shaped equalizing ring and a connecting support, the connecting support is connected with the connecting plate, and the saddle-shaped equalizing ring is arranged on the lower portion of the I-shaped insulator string and the lower portion of the pillar insulator string.
Preferably, the I-type insulator string can be any one of a pillar insulator string, a composite insulator string and a disc insulator string.
Preferably, the pillar insulator string is composed of 1 composite insulator and composite materials, the I-shaped suspension string is composed of the composite insulator and a plurality of hardware fittings, and the I-shaped insulator string can also be composed of a plurality of disc insulators and a plurality of hardware fittings.
Preferably, the yoke plate is provided with a first connecting hole corresponding to the I-shaped insulator string, a second connecting hole corresponding to the suspension yoke plate, and 2-3 third connecting holes corresponding to the pillar insulator string.
Preferably, the I-shaped insulator string and the post insulator string are arranged in a vertical line direction.
Preferably, the pillar insulator string and the I-shaped insulator string can rotate along the line direction and cannot rotate towards the tower body side along the line direction.
Preferably, the iron tower cross arm is connected with a fixing rod, the fixing rod is sleeved with a bearing, and the bearing is connected with the post insulator string.
The utility model discloses a prevent wind cluster of dangling of inclined to one side V type for conventional I cluster that dangles, this application increases behind the pillar insulator chain, pillar insulator chain and I type insulator chain can be in the same direction as the circuit direction rotate, can not rotate toward the body of the tower side with the perpendicular circuit direction, and only the yoke plate that dangles can rotate perpendicular circuit direction, consequently, can shorten the size of iron tower cross arm. Because the pillar insulator string restrains the horizontal displacement of the lead in the vertical line direction, the lead can be prevented from generating large wind deflection and swing angle. Therefore, the method and the device are suitable for the side phase of the power transmission line linear iron tower in the high wind area, particularly in the area where the sand storm is easy to occur, and prevent the overhead power transmission line from windage flashover, so that the power failure accident of a large area is avoided, and the power supply reliability of a power grid is improved.
In addition, the saddle-shaped large equalizing ring is shared by the lower parts of the pillar insulator string and the I-type insulator string, so that the phenomenon that the lower half section of the pillar insulator string and the I-type insulator string collide with each other due to shaking of the lower half section of the insulator string under the action of wind can be avoided when the equalizing ring is arranged on the lower part of the pillar insulator string and the I-type insulator string. Meanwhile, the saddle-shaped grading ring has a good grading effect on high-potential end hardware fittings and insulators in a half V string. In addition, 2-3 third connecting holes of yoke plate of this application are used for being connected with the pillar insulator cluster, can be convenient for adjust the length of pillar insulator cluster and with the contained angle of I type insulator cluster according to actual conditions, enlarge the application scope of this application.
Drawings
FIG. 1 is a front view of a semi-V-shaped hanging string for preventing windage yaw;
fig. 2 is a side view of a wind deflection prevention semi-V-shaped hanging string of the present invention;
fig. 3 is a front view of the large equalizing ring 5 and the connecting plate 6 of the present invention.
In the figure: 1-I type insulator string, 2-post insulator string, 3-I type string small equalizing ring, 4-post string small equalizing ring, 5-large equalizing ring, 51-saddle-shaped equalizing ring, 52-connecting bracket, 6-connecting plate, 61-first connecting hole, 62-second connecting hole, 63-third connecting hole, 7-suspension connecting plate, 8-iron tower cross arm, 9-fixing rod, 10-bearing, 11-parallel hanging plate and 12-DB adjusting plate.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
Example 1
The utility model provides a prevent wind cluster of dangling with half V type, as figure 1, figure 2 shows, from the bottom up includes yoke plate 7 that dangles in proper order, yoke plate 6, pillar insulator chain 2 and I type insulator chain 1, iron tower cross arm 8, yoke plate 7 connection yoke plate 6 dangles, yoke plate 6 respectively with pillar insulator chain 2 with I type insulator chain 1 is connected, 2 lower extremes of pillar insulator chain with 1 lower extreme of I type insulator chain is the acute angle contained angle, pillar insulator chain 2 with I type insulator chain 1 all is connected with iron tower cross arm 8, I type insulator chain 1 with iron tower cross arm 8 is connected perpendicularly. The utility model discloses a prevent wind partly half V type cluster that dangles, from the bottom up include in proper order that yoke plate 7 dangles, yoke plate 6, pillar insulator chain 2 and I type insulator chain 1, iron tower cross arm 8, yoke plate 7 connects yoke plate 6 dangles, and in this embodiment, the structure of yoke plate 7 dangles to and the connected mode of yoke plate 7 and yoke plate 6 dangles is the common technical means of technical staff in the field, therefore, do not carry out detailed explanation here again; the yoke plate 6 respectively with pillar insulator chain 2 with I type insulator chain 1 is connected, 2 lower extremes of pillar insulator chain with 1 lower extreme of I type insulator chain is the acute angle contained angle, in this embodiment, yoke plate 6 is connected for the conventionality with pillar insulator chain 2 and yoke plate 6 and I type insulator chain 1, no longer carries out detailed repeated description here, in addition, pillar insulator chain comprises 1 composite insulator and compound material, the I type string that dangles comprises composite insulator and a plurality of gold utensil, consequently, its length can be according to actual conditions such as air gap and set for, the contained angle is the acute angle, can be according to tower pole planning result and the angle of swaying and confirm. The pillar insulator string 2 and the I-shaped insulator string 1 are connected with an iron tower cross arm 8, and the I-shaped insulator string 1 is vertically connected with the iron tower cross arm 8. In this embodiment, I type insulator string 1 is connected for perpendicular with iron tower cross arm 8's being connected, pillar insulator string 2 with be an acute angle between the iron tower cross arm 8, pillar insulator string 2 and I type insulator string 1 are right triangle, and whole string of dangling is half V type, for conventional I string that dangles, this application has increased pillar insulator string 2 and iron tower cross arm 8 and has connected the back, only dangles the yoke plate and can rotate, consequently, can shorten iron tower cross arm 8's size, simultaneously because iron tower cross arm 8, pillar insulator string 2 and I type insulator string 1 are right triangle, and whole string of dangling is half V type, has retrained the horizontal displacement of wire perpendicular line direction to can avoid the wire to produce windage yaw and the angle of swaying by a wide margin. Therefore, the method and the device are suitable for the side phase of the power transmission line linear iron tower in the high wind area, particularly in the area where the sand storm is easy to occur, and prevent the overhead power transmission line from windage flashover, so that the power failure accident of a large area is avoided, and the power supply reliability of a power grid is improved.
Example 2
Based on the embodiment 1, as shown in fig. 1 and fig. 2, the I-shaped insulator string 1 is provided with grading rings at the upper part and the lower part; and equalizing rings are arranged on the upper part and the lower part of the pillar insulator string 2. In this embodiment, grading rings are disposed on the upper and lower portions of the I-type insulator string 1 and on the upper and lower portions of the pillar insulator string 2, so as to increase the capacitance of the I-type insulator string 1 and the pillar insulator string 2 to the wires and improve the voltage distribution. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 3
Based on the above embodiment 2, as shown in fig. 1-3, the upper portion of the I-shaped insulator string 1 is connected with the I-shaped small grading ring 3, the upper portion of the pillar insulator string 2 is connected with the pillar small grading ring 4, the yoke plate 6 is connected with the large grading ring 5, and the large grading ring 5 is arranged on the lower portion of the I-shaped insulator string 1 and the lower portion of the pillar insulator string 2. In this embodiment, the upper portion of I type insulator chain 1 is equipped with the little equalizer ring of I type cluster 3 that technical personnel in the field are familiar, and 2 upper portions of pillar insulator chain set up the little equalizer ring of pillar cluster 4 that technical personnel in the field are familiar, because 2 lower extremes of pillar insulator chain with 1 lower extreme of I type insulator chain is acute angle contained angle, consequently, can 2 lower parts of pillar insulator chain and the lower part setting of I type insulator chain 1 can set up a big equalizer ring 5 jointly, when can avoiding pillar insulator chain 2 and I type insulator chain 1 respectively to set up an equalizer ring, because under the effect of wind power, rocking of I type insulator chain 1 lower half-section leads to equalizer ring collision, damage. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 4
Based on the above embodiment 3, as shown in fig. 1 to 3, the large grading ring 5 includes the saddle-shaped grading ring 51 and the connecting bracket 52, the connecting bracket 52 is connected with the connecting plate 6, and the saddle-shaped grading ring 51 is arranged at the lower part of the I-shaped insulator string 1 and the lower part of the post insulator string 2. In the present embodiment, the large grading ring 5 comprises a saddle-shaped grading ring 51 and a connecting bracket 52, the saddle-shaped grading ring 51 is arranged at the lower part of the I-shaped insulator string 1 and the lower part of the post insulator string 2, and is connected with the connecting plate 6 by means of the connecting bracket 52 for supporting, and the connecting bracket 52 is connected with the connecting plate 6 in a prescribed fixed connection manner well known to those skilled in the art, and will not be described in detail herein; the saddle-shaped grading ring 51 and the connecting bracket 52 are connected by conventional welding, and will not be described in detail herein. Through the arrangement of the saddle-shaped grading rings 51 on the lower portions of the I-shaped insulator strings 1 and the lower portions of the support insulator strings 2, a good grading effect can be achieved on the support insulator strings 2 and the I-shaped insulator strings 1. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 5
Based on the above embodiments 1 to 4, the I-type insulator string 1 may be any one of a post insulator string, a composite insulator string, and a disc insulator string. In this embodiment, the I-type insulator string 1 may be any one of a post insulator string, a composite insulator string and a disc insulator string, and preferably, the composite insulator string is selected because the composite insulator string is cheaper than the post insulator string and does not affect the use. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 6
Based on the embodiment 5, the pillar insulator string 2 is composed of 1 composite insulator and composite materials, the I-type insulator string is composed of the composite insulator and a plurality of hardware fittings, and the I-type insulator string can also be composed of a plurality of disc insulators and a plurality of hardware fittings. The structures of the composite insulators and the fittings constituting the I-shaped insulator string 1 and the connection manner of the composite insulators and the fittings in the present embodiment are well known to those skilled in the art, and will not be described in detail herein; further, the disc insulator is also a type of insulator commonly used in the art, and therefore, will not be described in detail. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 7
Based on the embodiment 1, the connecting plate 6 is provided with the first connecting holes 61 corresponding to the I-shaped insulator strings 1, the second connecting holes 62 corresponding to the suspension connecting plate 7, and 2-3 third connecting holes 63 corresponding to the pillar insulator strings 2. In this application, yoke plate 6 respectively with the yoke plate 7 that dangles, I type insulator chain 1 and pillar insulator chain 2 are connected, the connected mode in this embodiment, be used for connecting I type insulator chain 1 through design on yoke plate 6 with first connecting hole 61, design second connecting hole 62 is used for connecting the yoke plate 7 that dangles, be used for connecting pillar insulator chain 2 through setting up third connecting hole 63, wherein third connecting hole 63 is provided with 2-3, consequently, the hookup location of pillar insulator chain 2 and yoke plate 6 can be adjusted, thereby be convenient for adjust the length of pillar insulator chain 2 and the contained angle between pillar insulator chain 2 and the I type insulator chain 1. In addition, as shown in fig. 2, the I-type insulator string 1 is further provided with a DB adjustment plate 12 and a parallel hanging plate 11 for length adjustment. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 8
Based on the above-described embodiments 1 to 7, the I-type insulator string 1 and the post insulator string 2 are arranged in the vertical line direction. In this embodiment, the I-shaped insulator string 1 and the pillar insulator string 2 are arranged along a vertical line direction, which is a common arrangement mode for arrangement applied to an iron tower in the present application. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 9
Based on the above embodiment 8, the post insulator string 2 and the I-shaped insulator string 1 can rotate along the line direction, but cannot rotate toward the tower body side along the line direction. The string structure that dangles in this application can make pillar insulator chain 2 and I type insulator chain 1 can rotate along the line direction, can not rotate toward the body of the tower side along the line direction, and only the yoke plate 7 that dangles can rotate along the line direction, consequently, can shorten iron tower cross arm 8's size, and at construction or accident in-process, insulator chain can move along the line direction to avoid can not rotate and be pulled apart. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
Example 10
Based on the above embodiment 9, as shown in fig. 1, the iron tower cross arm 8 is connected with a fixing rod 9, the fixing rod 9 is sleeved with a bearing 10, and the bearing 10 is connected with the pillar insulator string 2. In this embodiment, the post insulator string 2 and the iron tower cross arm 8 are connected in a specific manner, in which the post insulator 2 can rotate along the line direction, and the post insulator string 2 can rotate around the fixing rod 9 through the bearing 10, so that the post insulator 2 can rotate along the line direction. In this embodiment, other undescribed contents are the same as those in the above embodiment, and are not described again here.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (9)
1. The utility model provides a prevent wind cluster that dangles with half V type, its characterized in that, from the bottom up includes the yoke plate that dangles in proper order, yoke plate, pillar insulator chain and I type insulator chain, iron tower cross arm, the yoke plate connection yoke plate that dangles, the yoke plate respectively with pillar insulator chain with I type insulator chain connects, pillar insulator chain lower extreme with I type insulator chain lower extreme is the acute angle contained angle, pillar insulator chain with I type insulator chain all is connected with the iron tower cross arm, I type insulator chain with the iron tower cross arm is connected perpendicularly.
2. The wind deflection preventing semi-V-shaped suspension string according to claim 1, wherein grading rings are arranged at the upper part and the lower part of the I-shaped insulator string; and equalizing rings are arranged on the upper part and the lower part of the pillar insulator string.
3. The wind-deflection-preventing semi-V-shaped suspension string according to claim 2, wherein the upper portion of the I-shaped insulator string is connected with a small I-shaped string grading ring, the upper portion of the pillar insulator string is connected with a small pillar string grading ring, the connecting plate is connected with a large grading ring, and the large grading ring is arranged on the lower portion of the I-shaped insulator string and the lower portion of the pillar insulator string.
4. The wind-yaw-resistant semi-V-shaped suspension string according to claim 3, wherein the large grading ring comprises a saddle-shaped grading ring and a connecting bracket, the connecting bracket is connected with the connecting plate, and the saddle-shaped grading ring is arranged on the lower portion of the I-shaped insulator string and the lower portion of the pillar insulator string.
5. The wind-deflection-preventing semi-V-shaped suspension string as claimed in any one of claims 1 to 4, wherein the I-shaped insulator string can be any one of a post insulator string, a composite insulator string and a disc insulator string.
6. The wind deflection preventing semi-V-shaped suspension string according to claim 5, wherein the pillar insulator string is composed of 1 composite insulator and composite materials, the I-shaped insulator string is composed of a composite insulator and a plurality of hardware fittings, and the I-shaped insulator string can also be composed of a plurality of disc insulators and a plurality of hardware fittings.
7. The wind deflection preventing semi-V-shaped suspension string as claimed in claim 1, wherein the yoke plate is provided with a first connecting hole corresponding to an I-shaped insulator string, a second connecting hole corresponding to the suspension yoke plate, and 2-3 third connecting holes corresponding to the pillar insulator string.
8. A wind-deflection preventing semi-V-shaped suspension string as claimed in any one of claims 6 to 7, wherein the I-shaped insulator string and the post insulator string are arranged in a vertical line direction.
9. The wind-yaw-resistant semi-V-shaped suspension string as claimed in claim 8, wherein said post insulator string and said I-shaped insulator string are rotatable in a line direction and are not rotatable in a perpendicular line direction toward the tower body side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922180168.6U CN211046394U (en) | 2019-12-06 | 2019-12-06 | Wind deflection prevention semi-V-shaped suspension string |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922180168.6U CN211046394U (en) | 2019-12-06 | 2019-12-06 | Wind deflection prevention semi-V-shaped suspension string |
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| CN211046394U true CN211046394U (en) | 2020-07-17 |
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| CN201922180168.6U Active CN211046394U (en) | 2019-12-06 | 2019-12-06 | Wind deflection prevention semi-V-shaped suspension string |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912058A (en) * | 2019-12-06 | 2020-03-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Wind deflection prevention semi-V-shaped suspension string |
| CN112670929A (en) * | 2020-11-30 | 2021-04-16 | 国网河北省电力有限公司经济技术研究院 | Windage yaw prevention insulator structure |
-
2019
- 2019-12-06 CN CN201922180168.6U patent/CN211046394U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912058A (en) * | 2019-12-06 | 2020-03-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Wind deflection prevention semi-V-shaped suspension string |
| CN110912058B (en) * | 2019-12-06 | 2024-04-26 | 中国电力工程顾问集团西南电力设计院有限公司 | Semi-V-shaped suspension string for preventing windage yaw |
| CN112670929A (en) * | 2020-11-30 | 2021-04-16 | 国网河北省电力有限公司经济技术研究院 | Windage yaw prevention insulator structure |
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