Strain-type transmission tower

Abstract

The present invention discloses a tension-resistant transmission pole tower, comprising: a tower body, the cross section of the tower body along the horizontal plane is a rectangular cross section, a first transverse direction and a second transverse direction perpendicular to each other are arranged in the horizontal direction, and the second transverse direction divides the rectangular cross section into a first side and a second side; four insulating members, one end of the four insulating members are respectively arranged on the four vertices of the rectangular cross section, and in the second transverse direction, the other ends of at least two of the insulating members located on one side of the rectangular cross section are away from each other along the first transverse direction; the other end of the insulating member is used for hanging the conductor. The tension-resistant transmission pole tower uses a composite cross arm to cleverly design the tower structure, eliminating the jumper string while making the distance between the conductor and the tower body meet the electrical safety distance requirements, greatly simplifying the jumper system, and can be used in large-angle corner towers; at the same time, the insulating member has greater rigidity, and will not swing due to wind force to change the distance between the conductor and the tower body, thereby avoiding flashover and power outage accidents.

Description

Technical Field

[0001] The present invention relates to the field of power transmission equipment, and particularly to a strain-type power transmission tower. Background Art

[0002] In existing strain-type power transmission towers, most are of the structure of traditional iron cross arms plus strain line insulators and jumper strings. The jumper string is used to change the path of the conductor so as to keep a safe gap between the conductor and the tower body. However, the jumper structure is complex, increasing the difficulty of design and installation. At the same time, when the wind force is relatively large, the jumper string and the conductor are prone to swing, causing the conductor to approach the tower body and resulting in flashover and tripping accidents, causing greater economic losses. Summary of the Invention

[0003] Based on this, it is necessary to provide a strain-type power transmission tower in which the conductor will not swing excessively due to wind force, thus preventing flashover and tripping accidents.

[0004] Its technical solution is as follows:

[0005] A strain-type power transmission tower, comprising:

[0006] A tower body, the cross-section of the tower body along the horizontal plane is a rectangular cross-section, a first transverse direction and a second transverse direction perpendicular to each other are provided in the horizontal direction, and the second transverse direction divides the rectangular cross-section into a first side and a second side;

[0007] Four insulating members, the four insulating members are respectively a first insulating member, a second insulating member, a third insulating member and a fourth insulating member. One ends of the four insulating members are respectively arranged at the four vertices of the rectangular cross-section. In the second transverse direction, the other ends of at least two of the insulating members located on at least one side of the rectangular cross-section are separated from each other along the first transverse direction;

[0008] The other ends of the insulating members are used for hanging conductors, and the conductors include a first conductor and a second conductor.

[0009] In the above-mentioned strain-type power transmission tower, the strain-type power transmission tower carries the conductor through the insulating member, so that a safe distance is maintained between the conductor and the tower body. While eliminating the jumper string, the distance between the conductor and the tower body meets the requirements of the electrical safety distance. The insulating member has great rigidity and will not swing due to wind force to change the distance between the conductor and the tower body, thus avoiding flashover and tripping accidents.

[0010] In one embodiment, the other ends of the two insulating members located on the first side of the rectangular cross-section extend along the first transverse direction and are separated from each other. At least one angle steel cross arm is provided at each of the two vertices on the first side. One ends of at least two of the angle steel cross arms are arranged on the tower body, and the other ends of at least two of the angle steel cross arms are fixed to each other through a first connecting member.

[0011] In one embodiment, at least three insulating supports are further provided on the first connecting member. One ends of at least three insulating supports are fixedly connected to the first connecting member, and the other ends of at least three insulating supports extend along the first transverse direction and are away from each other.

[0012] In one embodiment, the three insulating supports are respectively a first insulating support, a second insulating support, and a third insulating support; the other end of the first insulating support is connected to the other end of the first insulating member to form a first wire hanging point, the other end of the second insulating support is connected to the other end of the second insulating member to form a second wire hanging point, and the other end of the third insulating support separately forms a third wire hanging point. The setting of the angle steel cross arm and the insulating supports provides support for the first insulating member and the second insulating member, making the positions and angles of the first insulating member and the second insulating member more stable, and not easily causing problems such as flashover and tripping due to the shaking of the insulating members causing the shaking of the wires.

[0013] In one embodiment, the other ends of the two insulating members located on the second side are connected to each other to form a fourth wire hanging point.

[0014] In one embodiment, on the second transverse direction, the first wire and the second wire are respectively hung on both sides of the rectangular cross section. The first wire is sequentially connected to the first wire hanging point, the third wire hanging point, and the second wire hanging point; the second wire is directly connected to the fourth wire hanging point.

[0015] In one embodiment, the other ends of the two insulating members located on the second side extend along the first transverse direction and are away from each other and respectively form a fifth wire hanging point and a sixth wire hanging point.

[0016] In one embodiment, on the second transverse direction, the first wire and the second wire are respectively hung on both sides of the rectangular cross section. The first wire is sequentially connected to the first wire hanging point, the third wire hanging point, and the second wire hanging point; the second wire is sequentially connected to the fifth wire hanging point and the sixth wire hanging point.

[0017] In one embodiment, the other ends of the two insulating members located on the first side extend along the first transverse direction and are away from each other and respectively form a seventh wire hanging point and an eighth wire hanging point, and the other ends of the two insulating members located on the second side are connected to each other to form a first connection point.

[0018] In one embodiment, at least two strain insulators are connected to the first connection point. One ends of at least two strain insulators are connected to the first connection point, and the other ends of at least two strain insulators extend along the first transverse direction and are away from each other and respectively form a ninth wire hanging point and a tenth wire hanging point.

[0019] In one of the embodiments, on the second transverse direction, both the first wire and the second wire are arranged on the same side of the rectangular cross-section. The first wire is sequentially connected to the seventh wire hanging point, the first connection point, and the eighth wire hanging point; the second wire is sequentially connected to the ninth wire hanging point and the tenth wire hanging point. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a strain-type transmission tower in the first embodiment;

[0021] Figure 2 It is a schematic structural diagram of a strain-type transmission tower in the second embodiment;

[0022] Figure 3 It is a schematic structural diagram of a strain-type transmission tower in the third embodiment.

[0023] Wherein: 1, tower body; 11, first side; 12, second side; 21, first insulator; 22, second insulator; 23, third insulator; 24, fourth insulator; 31, first wire; 32, second wire; 4, angle steel cross arm; 41, first connecting member; 51, first insulating support; 52, second insulating support; 53, third insulating support; 61, first wire hanging point; 62, second wire hanging point; 63, third wire hanging point; 64, fourth wire hanging point; 65, fifth wire hanging point; 66, sixth wire hanging point; 67, seventh wire hanging point; 68, eighth wire hanging point; 69, ninth wire hanging point; 60, tenth wire hanging point; 7, first connection point; 8, strain insulator. Detailed Embodiments

[0024] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] In the present invention, the "first" and "second" do not represent specific quantities and sequences, but are only used for name distinction.

[0028] The first embodiment of the present invention discloses a strain-type transmission tower, as Figure 1 shown, including a tower body 1 and four insulating members provided on the tower body 1. The cross-section of the tower body 1 along the horizontal plane is a rectangular cross-section. In the horizontal direction, a first transverse direction X and a second transverse direction Y perpendicular to each other are provided. The second transverse direction Y divides the rectangular cross-section into a first side 11 and a second side 12; the four insulating members are respectively a first insulating member 21, a second insulating member 22, a third insulating member 23 and a fourth insulating member 24. One ends of the four insulating members are respectively provided at the four vertices of the rectangular cross-section, and the other ends are used for hanging wires. And the length of each insulating member is greater than or equal to the safety distance requirement for wire installation.

[0029] The strain-type transmission tower carries the wire through the insulating members, so that a safe distance is maintained between the wire and the tower body 1. While eliminating the jumper string, the distance between the wire and the tower body 1 meets the electrical safety distance requirement. The insulating members have greater rigidity, so that there is no hanging wire segment for the wire, and thus the distance between the wire and the tower body 1 will not be changed due to the swing caused by wind force, avoiding flashover and tripping accidents.

[0030] Among them, the insulating member can be a composite cross arm or a line insulator, both of which have the advantages of strong insulation, large stiffness, light weight, easy installation, corrosion resistance, etc. On the second transverse direction Y, the other ends of the two insulating members on one side of the rectangular cross-section are separated from each other along the first transverse direction X, and the other ends of the two insulating members on the other side of the rectangular cross-section can be close to or separated from each other along the first transverse direction X.

[0031] In this embodiment, the other ends of the two insulating members located on the first side 11 of the rectangular cross-section extend along the first transverse direction X and are separated from each other. At least one angle steel cross arm 4 is provided at each of the two vertices on the first side 11. One end of each angle steel cross arm 4 is provided on the tower body 1, and the other ends of each angle steel cross arm 4 are fixed to each other through a first connecting member 41. In this embodiment, only one angle steel cross arm 4 is provided at each vertex. In other embodiments, multiple angle steel cross arms 4 can also be provided at each vertex, and no specific limitation is made here.

[0032] The first connecting member 41 is further provided with at least three insulating supports, namely a first insulating support 51, a second insulating support 52 and a third insulating support 53. One end of each insulating support is fixed on the first connecting member 41, and the other end extends along the first horizontal direction X and is away from each other. The other end of the first insulating support 51 is connected to the other end of the first insulating member 21 to form a first wire hanging point 61; the other end of the second insulating support 52 is connected to the other end of the second insulating member 22 to form a second wire hanging point 62; the other end of the third insulating support 53 independently forms a third wire hanging point 63. In other embodiments, the first connecting member 41 may further be provided with a fourth insulating support (not shown in the figure). One end of the fourth insulating support is fixed on the first connecting member 41, and the other end of the fourth insulating support is connected to the other end of the third insulating support 53 to form a third wire hanging point 63, which will not be elaborated here. Among them, the insulating support may be a composite cross arm to have good insulation and stiffness to support the wire; the length of the insulating support is greater than or equal to the safety distance of the wire to keep a safe distance between the wire and the angle steel cross arm 4.

[0033] The wire includes a first wire 31 and a second wire 32. The first wire 31 is located on the first side 11 of the rectangular cross section and is sequentially connected to the first wire hanging point 61, the third wire hanging point 63 and the second wire hanging point 62. By setting insulating members and insulating supports with appropriate lengths and insulation properties, the distances between various parts of the first wire 31 and the tower body 1 all meet the safety distance requirements. The two angle steel cross arms 4 and the tower body 1 form a stable triangular structure, and together with the insulating supports, they provide good support for the first insulating member 21 and the second insulating member 22, making the positions and angles of the first insulating member 21 and the second insulating member 22 more stable and not prone to problems such as flashover and tripping caused by the shaking of the insulating members and the resulting shaking of the wire. In this embodiment, both the first insulating member 21 and the second insulating member 22 are composite cross arms.

[0034] A third insulating member 23 and a fourth insulating member 24 are respectively provided at two vertices of the second side 12 of the rectangular cross section. In this embodiment, both the third insulating member 23 and the fourth insulating member 24 are composite cross arms. One end of the third insulating member 23 and the fourth insulating member 24 is connected to the tower body 1, and the other ends are connected to each other to form a fourth wire hanging point 64. The distance between the fourth wire hanging point 64 and the tower body 1 in the first horizontal direction X is greater than or equal to the installation safety distance of the second wire 32. The second wire 32 is located on the second side 12 of the rectangular cross section and is directly connected to the fourth wire hanging point 64.

[0035] In the tension-type transmission tower of this embodiment, by using insulating components to fix the conductors, the line insulators and jumper strings are saved, and the cost is reduced. At the same time, flashover and tripping accidents caused by wind are avoided, unnecessary losses are reduced, and it is safer. The tower body 1 that saves the line insulators and jumper strings has a simple structure. The tension-type transmission tower can have a large turning angle, such as a turning angle greater than 60°. At the same time, the angle steel cross arm 4 and the insulating support components jointly provide good support for the first insulating component 21 and the second insulating component 22. When the turning angle is large, the first insulating component 21 and the second insulating component 22 can also maintain the stability of their positions and angles. The width of the tower in the horizontal direction is reduced, and the corridor width is compressed. This transmission line has more advantages in areas where the corridor is tight and land resources are precious. The transmission capacity per unit corridor of the transmission line is increased, and the construction investment per unit transmission power is reduced. In addition, the line insulators are also omitted, the conductor layer spacing is reduced, the tower head size is compressed, the electric field distribution and electromagnetic environment of the tension turning angle tower are improved, and the lower tower body 1 and smaller tower type can effectively reduce the icing degree of the transmission tower and reduce the risk of tower collapse accidents.

[0036] The second embodiment of the present invention relates to a tension-type transmission tower, which is generally the same as the tension-type transmission tower in the first embodiment. The main difference is that the third insulating component 23 and the fourth insulating component 24 on the second side 12 of the tension-type transmission tower in the first embodiment are both composite cross arms, and the ends of the two composite cross arms are connected to form a fourth wire hanging point 64. In this embodiment, as Figure 2 shown, the third insulating component 23 and the fourth insulating component 24 connected to the second side 12 of the tower body 1 are both line insulators. One end of the third insulating component 23 and the fourth insulating component 24 are respectively connected to two vertices on the second side 12, and the other ends extend along the first horizontal direction X and are away from each other. The other end of the third insulating component 23 forms a fifth wire hanging point 65, and the other end of the fourth insulating component 24 forms a sixth wire hanging point 66.

[0037] The second conductor 32 is sequentially connected to the fifth wire hanging point 65 and the sixth wire hanging point 66.

[0038] The third embodiment of the present invention relates to a tension-type transmission tower, which is generally the same as the first embodiment. The main difference is that in this embodiment, as Figure 3As shown in the figure, both the first conductor 31 and the second conductor 32 are located on the second side 12 of the tower body 1. The first insulator 21 and the second insulator 22 located on the first side 11 are line insulators. The other ends of the two insulators extend along the first transverse direction X and are separated from each other to form a seventh hanging point 67 and an eighth hanging point 68 respectively. The third insulator 23 and the fourth insulator 24 located on the second side 12 can be composite cross arms. The other ends of the third insulator 23 and the fourth insulator 24 are connected to each other to form a first connection point 7. Of course, in other embodiments, the first insulator 21 and the second insulator 22 can also be composite cross arms, and the third insulator 23 and the fourth insulator 24 can also be line insulators, which are not specifically limited here.

[0039] The seventh hanging point 67 and the eighth hanging point 68 extend to the second side 12 of the tower body 1, and the distance from the second side 12 is greater than or equal to the installation safety distance of the conductor. The first conductor 31 is arranged on the second side 12 and is sequentially connected to the seventh hanging point 67, the first connection point 7 and the eighth hanging point 68.

[0040] At least two strain insulators 8 are connected to the first connection point 7. One ends of the two strain insulators 8 are connected to the first connection point 7, and the other ends extend along the first transverse direction X in the direction away from the first connection point 7 and are separated from each other to form a ninth hanging point 69 and a tenth hanging point 60. A strain insulator 8 can also be arranged on the first connection point 7 to form an eleventh hanging point. In this embodiment, only the case where two strain insulator parts 8 are arranged on the first connection point 7 is taken as an example. The second conductor 32 is sequentially connected to the ninth hanging point 69 and the tenth hanging point 60. Since the distance between the first connection point 7 and the tower body 1 is greater than or equal to the conductor safety distance, the distance between the second conductor 32 and the tower body 1 is greater than the conductor safety distance, meeting the conductor installation requirements. The strain-type transmission tower in this embodiment omits the jumper system, reducing the cost; at the same time, it avoids the flashover and tripping accidents caused by wind, reducing unnecessary losses and being more secure; the first side 11 of the tower body 1 fixes the first conductor 31 located on the second side 12 through line insulators, which is suitable for the transmission of conductors with large angles. At the same time, the second conductor 32 is fixed by using the line insulators connected by the composite cross arms inside the corner space, greatly saving steel, simplifying or omitting the jumper, and compressing the conductor spacing to the minimum design safety distance range, and the overall cost is more economical.

[0041] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope described in this specification.

[0042] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A strain-type transmission tower, characterized in that, Comprising: Tower body, the cross-section of the tower body along the horizontal plane is a rectangular cross-section, with a first transverse direction and a second transverse direction perpendicular to each other arranged in the horizontal direction, and the second transverse direction divides the rectangular cross-section into a first side and a second side; Four insulating members, the four insulating members are respectively a first insulating member, a second insulating member, a third insulating member and a fourth insulating member, one ends of the four insulating members are respectively arranged at the four vertices of the rectangular cross-section, in the second transverse direction, at least the first insulating member and the second insulating member located on one side of the rectangular cross-section are far away from each other along the first transverse direction at the other ends; The other ends of the insulating members are used for hanging wires, and the wires include a first wire and a second wire; The first wire is located on the first side of the rectangular cross-section, the second wire is located on the second side of the rectangular cross-section, the other ends of the first insulating member and the second insulating member located on the first side of the rectangular cross-section extend along the first transverse direction and are far away from each other, at least one angle steel cross arm is provided at each of the two vertices on the first side, at least two ends of the at least two angle steel cross arms are arranged on the tower body, and at least two ends of the at least two angle steel cross arms are fixed to each other through a first connecting member.

2. The strain-type transmission tower according to claim 1, wherein At least three insulating support members are further provided on the first connecting member, one ends of the at least three insulating support members are fixedly connected to the first connecting member, and the other ends of the at least three insulating support members extend along the first transverse direction and are far away from each other.

3. The strain-type transmission tower according to claim 2, wherein The three insulating support members are respectively a first insulating support member, a second insulating support member and a third insulating support member; the other end of the first insulating support member is connected to the other end of the first insulating member to form a first wire hanging point, the other end of the second insulating support member is connected to the other end of the second insulating member to form a second wire hanging point, and the other end of the third insulating support member forms a third wire hanging point alone.

4. The strain-type transmission tower according to claim 3, wherein The other ends of the third insulating member and the fourth insulating member located on the second side are connected to each other to form a fourth wire hanging point.

5. The strain-type transmission tower according to claim 4, wherein, The first wire is sequentially connected to the first wire hanging point, the third wire hanging point and the second wire hanging point; the second wire is directly connected to the fourth wire hanging point.

6. The strain-type transmission tower according to claim 3, characterized in that, The other ends of the third insulating member and the fourth insulating member located on the second side extend along the first transverse direction and are far away from each other and respectively form a fifth wire hanging point and a sixth wire hanging point.

7. The strain-type transmission tower according to claim 6, wherein The first wire is sequentially connected to the first wire hanging point, the third wire hanging point and the second wire hanging point; the second wire is sequentially connected to the fifth wire hanging point and the sixth wire hanging point.

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