CN219998898U - Insulator chain arrangement structure and power transmission tower - Google Patents
Insulator chain arrangement structure and power transmission tower Download PDFInfo
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- CN219998898U CN219998898U CN202321351930.2U CN202321351930U CN219998898U CN 219998898 U CN219998898 U CN 219998898U CN 202321351930 U CN202321351930 U CN 202321351930U CN 219998898 U CN219998898 U CN 219998898U
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- 239000012212 insulator Substances 0.000 title claims abstract description 165
- 230000005540 biological transmission Effects 0.000 title claims abstract description 74
- 239000000725 suspension Substances 0.000 claims abstract description 23
- 238000007667 floating Methods 0.000 claims description 23
- 238000004873 anchoring Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 abstract description 19
- 239000004020 conductor Substances 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model provides an insulator string arrangement structure and a power transmission tower, wherein the arrangement structure comprises a wire cross arm and a combined insulator string hung on the wire cross arm; the wire cross arm at least comprises a first supporting part and a second supporting part which are parallel to each other; the combined insulator string comprises a first V-shaped insulator string, a second V-shaped insulator string and a suspension clamp; the first V-shaped insulator string and the second V-shaped insulator string are respectively hung on the first supporting portion and the second supporting portion, and bottoms of the first V-shaped insulator string and the second V-shaped insulator string are connected to the suspension clamp. The utility model can limit the six-degree-of-freedom movement of the overhead transmission conductor, thereby effectively avoiding flashover accidents.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to an insulator chain arrangement structure and a power transmission tower.
Background
At present, the offshore wind power industry in China is developing from offshore to deep open sea, and how to transmit the electric energy generated by the wind driven generator in the deep open sea scene back to the land power system is a problem which has to be considered. Submarine cables are the most commonly used mode for offshore transmission at present, but in consideration of the large difficulty of laying construction and complex technology of submarine cable transmission, a floating type offshore alternating current overhead transmission mode is more suitable in a long-distance transmission scheme in a deep open sea scene.
In a floating type marine alternating current overhead transmission scene, as the floating foundation of the transmission tower is influenced by environmental loads such as wind, waves, currents and the like, the floating foundation generates swaying, pitching, rolling and swaying movements, and further drives the transmission tower which is rigidly connected with the floating foundation to move together, but the transmission tower is not rigidly connected with the overhead transmission conductor, so that relative movement between the overhead transmission conductor and the transmission tower is caused, and at the moment, if the electrical gap between the overhead transmission conductor and the tower body or the cross arm of the transmission tower is insufficient, flashover accidents are very easy to occur, and the transmission reliability is greatly influenced.
In the prior art, the suspension type I insulator string is generally changed into the suspension type V insulator string, so that the overhead transmission conductor is limited to bear wind load and move towards the tower body of the transmission tower, and wind deflection flashover is avoided. However, in a floating type offshore alternating current overhead transmission scene, the floating type foundation and the transmission tower can move towards all directions, and the prior art can limit the movement of the overhead transmission wire in one direction only, so that the occurrence of flashover accidents cannot be effectively avoided.
Disclosure of Invention
The embodiment of the utility model provides an insulator string arrangement structure and a power transmission tower, wherein a first V-shaped insulator string and a second V-shaped insulator string are respectively hung on two mutually parallel supporting parts on a wire cross arm, and the bottoms of the first V-shaped insulator string and the second V-shaped insulator string are connected with a suspension clamp, so that six-degree-of-freedom movement of an overhead power transmission wire can be limited, and a flashover accident can be effectively avoided.
In order to solve the technical problems, a first aspect of the embodiments of the present utility model provides an insulator string arrangement structure, including a wire cross arm and a combined insulator string hung on the wire cross arm;
the wire cross arm at least comprises a first supporting part and a second supporting part which are parallel to each other;
the combined insulator string comprises a first V-shaped insulator string, a second V-shaped insulator string and a suspension clamp; the first V-shaped insulator string and the second V-shaped insulator string are respectively hung on the first supporting portion and the second supporting portion, and bottoms of the first V-shaped insulator string and the second V-shaped insulator string are connected to the suspension clamp.
Preferably, the first V-shaped insulator string and the second V-shaped insulator string are arranged oppositely.
As a preferable scheme, the two ends of the first V-shaped insulator string are hung on the first supporting part, the two ends of the second V-shaped insulator string are hung on the second supporting part, and the distance between the two ends of the first V-shaped insulator string is equal to the distance between the two ends of the second V-shaped insulator string.
Preferably, the first V-shaped insulator string comprises a first insulator string and a second insulator string; the second V-shaped insulator string comprises a third insulator string and a fourth insulator string;
one end of the first insulator string and one end of the second insulator string are both hung on the first supporting part, and the other end of the first insulator string and the other end of the second insulator string are both connected with the suspension clamp to form the first V-shaped insulator string;
one end of the third insulator string and one end of the fourth insulator string are both hung on the second supporting portion, and the other end of the third insulator string and the other end of the fourth insulator string are both connected to the suspension clamp to form the second V-shaped insulator string.
Preferably, the wire cross arm further comprises a third supporting part and a fourth supporting part which are parallel to each other; the first supporting part and the third supporting part are positioned on the same horizontal line; the second supporting portion and the fourth supporting portion are located on the same horizontal line.
As a preferable scheme, the wire cross arm further comprises a first connecting part, a second connecting part, a third connecting part and a fourth connecting part;
one end of the first connecting part is connected with the first supporting part, and the other end of the first connecting part is used for being connected with a tower body of the power transmission tower; one end of the second connecting part is connected with the second supporting part, and the other end of the second connecting part is used for being connected with a tower body of the power transmission tower; one end of the third connecting part is connected with the third supporting part, and the other end of the third connecting part is used for being connected with a tower body of the power transmission tower; one end of the fourth connecting part is connected to the fourth supporting part, and the other end of the fourth connecting part is used for being connected with a tower body of the power transmission tower.
Preferably, an obtuse angle is formed between the first connecting portion and the first supporting portion; an obtuse angle is formed between the second connecting part and the second supporting part; an obtuse angle is formed between the third connecting part and the third supporting part; an obtuse angle is formed between the fourth connecting portion and the fourth supporting portion.
A second aspect of an embodiment of the present utility model provides a power transmission tower, at least including the insulator string arrangement structure as set forth in any one of the first aspects.
The tower also comprises a ground wire cross arm, a tower head, a tower body and tower legs;
the tower head is connected to the top of the tower body, and the tower legs are connected to the bottom of the tower body; the tower head is provided with the ground wire cross arm; the tower body is provided with a plurality of insulator string arrangement structures according to any one of the first aspect.
Preferably, the floating type mooring line comprises a floating type foundation, a plurality of mooring lines and anchors;
the floating foundation is arranged at the bottom of the tower leg; one end of each mooring line is connected with the floating foundation, and the other end of each mooring line is connected with the anchoring piece; the anchoring member is arranged on the sea floor.
Compared with the prior art, the method has the beneficial effects that the first V-shaped insulator string and the second V-shaped insulator string are respectively hung on the two mutually parallel supporting parts on the wire cross arm, and the bottoms of the first V-shaped insulator string and the second V-shaped insulator string are connected to the suspension clamp, so that six-degree-of-freedom movement of the overhead transmission wire can be limited, and the flashover accident can be effectively avoided.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of an insulator string arrangement provided by the present utility model;
FIG. 2 is a schematic diagram of another preferred embodiment of an insulator string arrangement provided by the present utility model;
fig. 3 is an elevation view of a power transmission tower in an embodiment of the present utility model;
fig. 4 is a left side view of a power transmission tower in an embodiment of the present utility model;
1, an insulator string arrangement structure; 2. a first V-shaped insulator string; 201. a first insulator string; 202. a second insulator string; 3. a second V-shaped insulator string; 301. a third insulator string; 302. a fourth insulator string; 401. a first support portion; 402. a second supporting part; 403. a third supporting part; 404. a fourth supporting part; 405. a first connection portion; 406. a second connecting portion; 407. a third connecting portion; 408. a fourth connecting portion; 501. a suspension clamp; 601. a ground wire cross arm; 602. a tower head; 603. a tower body; 604. a tower leg; 605. a floating foundation; 606. a mooring line; 607. an anchor.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, a first aspect of an embodiment of the present utility model provides an insulator string arrangement structure, including a wire cross arm and a combined insulator string hanging on the wire cross arm;
the wire cross arm at least comprises a first supporting part 401 and a second supporting part 402 which are parallel to each other;
the combined insulator string comprises a first V-shaped insulator string 2, a second V-shaped insulator string 3 and a suspension clamp 501; the first V-shaped insulator string 2 and the second V-shaped insulator string 3 are respectively hung on the first supporting portion 401 and the second supporting portion 402, and bottoms of the first V-shaped insulator string 2 and the second V-shaped insulator string 3 are both connected to the suspension clamp 501.
Specifically, in order to be able to suspend the modular insulator string in this embodiment, the wire cross arm in this embodiment includes at least two mutually parallel support portions, namely, a first support portion 401 and a second support portion 402. Further, the combined insulator string includes a first V-shaped insulator string 2, a second V-shaped insulator string 3, and a suspension clamp 501, where the first V-shaped insulator string 2 and the second V-shaped insulator string 3 are respectively hung on the first support portion 401 and the second support portion 402, the bottoms of the two are both connected to the suspension clamp 501, the suspension clamp 501 is used for fixing an overhead power transmission line, and as seen from fig. 1 and 2, the combined insulator string is in an X-shape as a whole from a top view.
It is to be noted that it is assumed that the direction along the overhead power transmission line is longitudinal and the horizontal direction perpendicular to the overhead power transmission line is transverse. When the floating foundation drives the power transmission tower to surge and pitch, the power transmission tower can longitudinally move, at the moment, the first two insulator strings in the longitudinal movement direction can generate tensile force to drive the overhead transmission wires to longitudinally move together, the second two insulator strings can generate interference force to limit the overhead transmission wires to move upwards and backwards relative to the wire cross arm, and the first V-shaped insulator string 2 and the second V-shaped insulator string 3 jointly act to avoid flashover accidents caused by the fact that the overhead transmission wires are close to the wire cross arm. Similarly, when the floating foundation drives the power transmission tower to sway and roll, the first two insulator strings in the transverse movement direction generate tensile force to drive the overhead power transmission wire to move transversely together, and the second two insulator strings generate interference force to limit the overhead power transmission wire to be upwards close to the wire cross arm or the tower body of the power transmission tower. For heave movement of a floating foundation, as heave movement is much smaller than heave and heave amplitude, and related researches show that heave movement period is also long, when vertical upward movement occurs, the first V-shaped insulator string 2 and the second V-shaped insulator string 3 simultaneously generate tensile force to drive the overhead transmission wire to move upwards, and when vertical downward movement occurs, the first V-shaped insulator string 2 and the second V-shaped insulator string 3 simultaneously generate interference force to act together with gravity of the overhead transmission wire, so that flashover of the overhead transmission wire, which is close to a wire cross arm, is limited. Based on the above, the embodiment can effectively avoid the flashover accident between the overhead transmission wire, the transmission tower and the wire cross arm caused by six-degree-of-freedom motion of the floating foundation.
Preferably, the first V-shaped insulator string 2 and the second V-shaped insulator string 3 are arranged oppositely.
It is worth to say that, in this embodiment, through the relative arrangement of the first V-shaped insulator string 2 and the second V-shaped insulator string 3, when the overhead transmission conductor performs six degrees of freedom motion, an interference force can be uniformly applied to the overhead transmission conductor, so as to improve the effect of limiting the six degrees of freedom motion of the overhead transmission conductor.
As a preferable solution, the two ends of the first V-shaped insulator string 2 are hung on the first supporting portion 401, the two ends of the second V-shaped insulator string 3 are hung on the second supporting portion 402, and the distance between the two ends of the first V-shaped insulator string 2 is equal to the distance between the two ends of the second V-shaped insulator string 3.
It is worth to say that, in this embodiment, the distance between the two ends of the first V-shaped insulator string 2 is equal to the distance between the two ends of the second V-shaped insulator string 3, so that when the overhead transmission conductor performs six-degree-of-freedom motion, an interference force can be uniformly applied to the overhead transmission conductor, thereby improving the limiting effect on the six-degree-of-freedom motion of the overhead transmission conductor.
Preferably, the first V-shaped insulator string 2 includes a first insulator string 201 and a second insulator string 202; the second V-shaped insulator string 3 includes a third insulator string 301 and a fourth insulator string 302;
one end of the first insulator string 201 and one end of the second insulator string 202 are both hung on the first supporting portion 401, and the other end of the first insulator string 201 and the other end of the second insulator string 202 are both connected to the suspension clamp 501, so as to form the first V-shaped insulator string 2;
one end of the third insulator string 301 and one end of the fourth insulator string 302 are both hung on the second supporting portion 402, and the other end of the third insulator string 301 and the other end of the fourth insulator string 302 are both connected to the suspension clamp 501, so as to form the second V-shaped insulator string 3.
Preferably, the wire cross arm further comprises a third supporting part 403 and a fourth supporting part 404 which are parallel to each other; the first supporting portion 401 and the third supporting portion 403 are on the same horizontal line; the second support 402 and the fourth support 404 are on the same horizontal line.
It should be noted that, based on that some power transmission towers use a single-sided cross arm, and some power transmission towers use a double-sided cross arm, the wire cross arm in this embodiment further includes a third supporting portion 403 and a fourth supporting portion 404 that are parallel to each other, and the combined insulator string can also be suspended by cooperation of the third supporting portion 403 and the fourth supporting portion 404.
As an alternative embodiment, as shown in fig. 2, the first supporting portion 401 and the third supporting portion 403 are on the same horizontal line, and the first supporting portion 401 and the third supporting portion 403 are in an integrally formed structure, the second supporting portion 402 and the fourth supporting portion 404 are on the same horizontal line, and the second supporting portion 402 and the fourth supporting portion 404 are in an integrally formed structure.
As shown in fig. 1, the wire cross arm preferably further includes a first connecting portion 405, a second connecting portion 406, a third connecting portion 407, and a fourth connecting portion 408;
one end of the first connection part 405 is connected to the first support part 401, and the other end of the first connection part 405 is connected to a tower body of the power transmission tower; one end of the second connection part 406 is connected to the second supporting part 402, and the other end of the second connection part 406 is used for being connected with a tower body of the power transmission tower; one end of the third connecting portion 407 is connected to the third supporting portion 403, and the other end of the third connecting portion 407 is connected to a tower body of the power transmission tower; one end of the fourth connecting portion 408 is connected to the fourth supporting portion 404, and the other end of the fourth connecting portion 408 is connected to a tower body of the power transmission tower.
Preferably, an obtuse angle is formed between the first connecting portion 405 and the first supporting portion 401; the second connecting portion 406 forms an obtuse angle with the second supporting portion 402; the third connecting portion 407 forms an obtuse angle with the third supporting portion 403; the fourth connection portion 408 forms an obtuse angle with the fourth support portion 404.
It should be noted that, the structural form of the wire cross arm in this embodiment includes, but is not limited to, the form as shown in fig. 1 and 2, and any structural form can be used as long as the combined insulator string can be suspended.
Referring to fig. 3 and 4, a second aspect of the embodiment of the present utility model provides a power transmission tower, at least including the insulator string arrangement structure 1 according to any one of the embodiments of the first aspect.
Preferably, the device also comprises a ground wire cross arm 601, a tower head 602, a tower body 603 and tower legs 604;
the tower head 602 is connected to the top of the tower body 603, and the tower legs 604 are connected to the bottom of the tower body 603; the tower head 602 is provided with the ground wire cross arm 601; the tower body 603 is provided with a plurality of insulator string arrangements 1 according to any embodiment of the first aspect.
It should be noted that the ground cross arm 601 provided on the tower head 602 is used for supporting an overhead ground wire.
Preferably, further comprising a floating foundation 605, a number of mooring lines 606 and anchors 607;
the floating foundation 605 is provided at the bottom of the tower leg 604; one end of each mooring line 606 is connected to the floating foundation 605, and the other end of each mooring line 606 is connected to the anchor 607; the anchor 607 is located subsea.
In this embodiment, the entire power transmission tower can be floated on the sea surface by the floating foundation 605, and positioning can be performed by the plurality of mooring lines 606 and the anchor members 607.
According to the insulator string arrangement structure and the power transmission tower, the first V-shaped insulator string and the second V-shaped insulator string are respectively hung on the two mutually parallel supporting parts on the wire cross arm, and the bottoms of the first V-shaped insulator string and the second V-shaped insulator string are connected to the suspension clamp, so that six-degree-of-freedom movement of the overhead power transmission wire can be limited, and flashover accidents can be effectively avoided.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.
Claims (10)
1. The insulator string arrangement structure is characterized by comprising a wire cross arm and a combined insulator string hung on the wire cross arm;
the wire cross arm at least comprises a first supporting part and a second supporting part which are parallel to each other;
the combined insulator string comprises a first V-shaped insulator string, a second V-shaped insulator string and a suspension clamp; the first V-shaped insulator string and the second V-shaped insulator string are respectively hung on the first supporting portion and the second supporting portion, and bottoms of the first V-shaped insulator string and the second V-shaped insulator string are connected to the suspension clamp.
2. The insulator string arrangement of claim 1, wherein the first V-shaped insulator string and the second V-shaped insulator string are oppositely disposed.
3. The insulator string arrangement structure of claim 1, wherein both ends of the first V-shaped insulator string are hung on the first supporting portion, both ends of the second V-shaped insulator string are hung on the second supporting portion, and a distance between both ends of the first V-shaped insulator string is equal to a distance between both ends of the second V-shaped insulator string.
4. The insulator string arrangement of claim 3, wherein the first V-shaped insulator string comprises a first insulator string and a second insulator string; the second V-shaped insulator string comprises a third insulator string and a fourth insulator string;
one end of the first insulator string and one end of the second insulator string are both hung on the first supporting part, and the other end of the first insulator string and the other end of the second insulator string are both connected with the suspension clamp to form the first V-shaped insulator string;
one end of the third insulator string and one end of the fourth insulator string are both hung on the second supporting portion, and the other end of the third insulator string and the other end of the fourth insulator string are both connected to the suspension clamp to form the second V-shaped insulator string.
5. The insulator string arrangement of claim 1, wherein the wire cross arm further comprises a third support and a fourth support parallel to each other; the first supporting part and the third supporting part are positioned on the same horizontal line; the second supporting portion and the fourth supporting portion are located on the same horizontal line.
6. The insulator string arrangement of claim 5, wherein the wire cross arm further comprises a first connection, a second connection, a third connection, and a fourth connection;
one end of the first connecting part is connected with the first supporting part, and the other end of the first connecting part is used for being connected with a tower body of the power transmission tower; one end of the second connecting part is connected with the second supporting part, and the other end of the second connecting part is used for being connected with a tower body of the power transmission tower; one end of the third connecting part is connected with the third supporting part, and the other end of the third connecting part is used for being connected with a tower body of the power transmission tower; one end of the fourth connecting part is connected to the fourth supporting part, and the other end of the fourth connecting part is used for being connected with a tower body of the power transmission tower.
7. The insulator string arrangement of claim 6, wherein the first connection portion and the first support portion form an obtuse angle therebetween; an obtuse angle is formed between the second connecting part and the second supporting part; an obtuse angle is formed between the third connecting part and the third supporting part; an obtuse angle is formed between the fourth connecting portion and the fourth supporting portion.
8. A transmission tower comprising at least an arrangement of insulator strings according to any one of claims 1 to 7.
9. The power transmission tower of claim 8, further comprising a ground cross arm, a tower head, a tower body, and a tower leg;
the tower head is connected to the top of the tower body, and the tower legs are connected to the bottom of the tower body; the tower head is provided with the ground wire cross arm; the tower body is provided with a plurality of insulator string arrangement structures as claimed in any one of claims 1 to 7.
10. The power transmission tower of claim 9, further comprising a floating foundation, a plurality of mooring lines, and anchors;
the floating foundation is arranged at the bottom of the tower leg; one end of each mooring line is connected with the floating foundation, and the other end of each mooring line is connected with the anchoring piece; the anchoring member is arranged on the sea floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321351930.2U CN219998898U (en) | 2023-05-30 | 2023-05-30 | Insulator chain arrangement structure and power transmission tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321351930.2U CN219998898U (en) | 2023-05-30 | 2023-05-30 | Insulator chain arrangement structure and power transmission tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219998898U true CN219998898U (en) | 2023-11-10 |
Family
ID=88614432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321351930.2U Active CN219998898U (en) | 2023-05-30 | 2023-05-30 | Insulator chain arrangement structure and power transmission tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219998898U (en) |
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2023
- 2023-05-30 CN CN202321351930.2U patent/CN219998898U/en active Active
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