CN213234465U - Horizontal drilling and crossing tower for middle-phase double-V hard jumper wire strings in 500kV line - Google Patents
Horizontal drilling and crossing tower for middle-phase double-V hard jumper wire strings in 500kV line Download PDFInfo
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- CN213234465U CN213234465U CN202021439123.2U CN202021439123U CN213234465U CN 213234465 U CN213234465 U CN 213234465U CN 202021439123 U CN202021439123 U CN 202021439123U CN 213234465 U CN213234465 U CN 213234465U
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Abstract
The utility model discloses a horizontal drilling and crossing tower for a middle-phase double-V hard jumper wire string in a 500kV line, relating to the technical field of transmission line design; the anti-strain tower comprises a wine glass tower body, a tower window and a wire cross arm, wherein a ground wire support is fixedly arranged on the wire cross arm, and three groups of hanging point positions are arranged on the front side and the rear side of the wire cross arm and are respectively used for hanging a strain insulator string; the tension string is fixedly connected with a lead along the extending end of the lead cross arm, jumper wires are arranged below the lead cross arm, and two ends of each jumper wire are respectively connected with the leads on two sides of the corresponding hanging point position of the lead cross arm; two V-shaped jumper strings are hung in the tower window, the two V-shaped jumper strings are arranged in parallel along the front and the back of the tower window, the overhanging parts of the two V-shaped jumper strings are connected with a hard jumper through hardware fittings, and the two V-shaped jumper strings are used for fixing the hard jumper; through implementing this technical scheme, adopt and hang the dual type V wire jumper cluster that disposes the hard wire jumper in tower edge middle part, reduce the sag height, compress the wire jumper space, and then reduce the iron tower and exhale the title height, realize that the circuit bores more.
Description
Technical Field
The utility model relates to a transmission line designs technical field, more specifically says, relates to a horizontal tower that bores of well two V hard wire jumper clusters in 500kV circuit.
Background
With the construction of power transmission lines becoming more intensive, the transmission channels are more and more tense, so that a plurality of inevitable cross spans can occur, and with the continuous rise of voltage levels in China, the requirements for the cross spans are further increased.
For example, for a 500kV alternating-current transmission line, the minimum value of the wire-to-ground distance in a non-residential area is 11m, the length of a general insulator string is 6m, and the sag of a jumper wire is about 2m, if a common strain tower in a shape like a Chinese character 'gan' is adopted to drill, the minimum value of the total height of an iron tower is 34m, the height of a transmission channel is further increased under the condition of ensuring the ground distance, and the requirement on the line in a general hilly area is difficult to meet.
In view of the above technical problems, it is necessary for those skilled in the art to study how to successfully drill the built line through a horizontal drilling tower of the phase double V hard jumper string in the 500kV line.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a horizontal tower that bores of well two V hard jumper wire cluster in 500kV circuit, its aim at adopt and hang the two type V jumper wire cluster that dispose hard jumper wire in tower edge middle part, reduce the sag height, compression jumper wire space, and then reduce the iron tower and exhale the title height, realize boring more to the circuit of having built.
The utility model adopts the technical scheme as follows:
a horizontal drilling and crossing tower for a middle-phase double-V hard jumper string in a 500kV line comprises a wine glass tower body, a tower window fixed at the upper end of the wine glass tower body and a wire cross arm horizontally arranged at the top of the tower window, wherein a ground wire support is fixedly arranged on the wire cross arm, three groups of hanging point positions are arranged in the length direction of the wire cross arm, and each group of hanging point positions are respectively positioned at the front side and the rear side of the wire cross arm and are respectively used for hanging a strain insulator string;
one group of hanging points are positioned in the middle of the wire cross arm, the remaining two groups of hanging points are respectively positioned at two ends of the wire cross arm, the tension string horizontally extends along two sides of each group of hanging points of the wire cross arm, and a wire is fixedly connected to the extending end;
two V-shaped jumper strings are hung in the tower window, the two V-shaped jumper strings are arranged in parallel along the front and the back of the tower window, the overhanging parts of the two V-shaped jumper strings are connected with a first hard jumper through hardware fittings, and the two V-shaped jumper strings are used for fixing the first hard jumper;
jumper wires are arranged below the tension string extending from the front side and the rear side of each group of hanging points, and the front end and the rear end of each jumper wire are respectively connected with the wires on the front side and the rear side of the corresponding hanging point position of the wire cross arm; the middle parts of the jumper wires corresponding to the hanging points at the middle parts of the wire cross arms are connected through a first hard jumper wire.
According to the technical scheme, the soft jumper wire crossing the middle part of the tower of the traditional horizontal drill is replaced by the hard jumper wire, and the two V-shaped jumper wire strings hung in the middle part of the wine glass tower body are fixed to prevent the wine glass tower body from swinging left and right; the hard jumper is of a rigid structure and has no jumper sag, when the wine glass tower body is drilled, the sag is compressed by the hard jumper in the middle of the wine glass tower body, and the jumper space is compressed, according to the design of the technical scheme, the ground wire support can be accurately adjusted according to the span length of the drilled step, the height of the ground wire support is properly reduced under the condition that the distance between the conducting ground wire and the ground wire meets the requirement, so that the purpose of reducing the overall height of the drilled tower is achieved, the height of the iron tower can be reduced under the condition that an insulation gap is met, and the built line can be drilled; simultaneously, the technical scheme utilizes two V-shaped jumper wire strings which are arranged in parallel in front of and behind the tower window to fix the hard jumper wire, can effectively solve the problem that the swinging of the hard jumper wire affects the electrical clearance, successfully compresses the sag height of the jumper wire, reduces the tower call height, creates favorable conditions for drilling other lines, and has good popularization and use values.
Preferably, the hanging parts at the two ends of the two V-shaped jumper strings are respectively connected with the two end parts at the top of the wine glass tower body through hardware fittings.
Preferably, the connecting positions of the two V-shaped jumper strings and the wine cup tower body are respectively positioned at the connecting part of the wire cross arm and the inside of the top of the wine cup tower body.
Preferably, two I-shaped jumper strings which vertically extend downwards are respectively arranged on the front side and the rear side of the lower surfaces of the two ends of the wire cross arm, the end parts of the two I-shaped jumper strings are connected with a second hard jumper through hardware fittings, and the middle parts of the jumper wires positioned at the two ends of the wire cross arm are connected through the second hard jumper.
As a preferred scheme, the tension string on two sides of the wire cross arm corresponding to the hanging point position horizontally extends along the direction perpendicular to the wire cross arm, and the wires on the tension string corresponding to the three groups of hanging point positions are arranged along the horizontal direction, so that the iron tower is further compressed to be high.
Preferably, the I-type jumper strings at two ends of the wire cross arm have a certain horizontal distance from the corresponding hanging point position of the wire cross arm, so that the I-type jumper strings are located outside the tension string at two sides of the corresponding hanging point position of the wire cross arm. By adopting the structural design, the sag height of the jumper can be effectively compressed, so that conditions are further created for drilling other lines.
Preferably, two ground wire brackets are fixedly arranged right above the wire cross arm, the two ground wire brackets are symmetrically arranged on the wire cross arm about the vertical center line of the wire cross arm, and ground wire hanging points are arranged at the tops of the two ground wire brackets. By adopting the structural design, the height of the ground wire support can be effectively reduced, the reduction of the research on a special lightning protection scheme by the ground wire support is the key for realizing reliable drilling, and the combination of a large included angle and a composite insulator is the key for realizing the optimized reduction of the length of a jumper string in the technical scheme.
Preferably, the wire cross arm is fixedly connected with the wine glass tower body through a bolt, and the ground wire support is fixedly connected with the wire cross arm through a bolt.
As described above, the present invention has at least the following advantages over the prior art:
1. the utility model discloses the horizontal tower that bores adopts and hangs two V type wire jumper clusters at the horizontal mode of boring tower middle part and crossing the tower and be used for fixed hard wire jumper, and it adopts hard wire jumper compression sag at wineglass body of the tower middle part, and compression wire jumper space can reduce the iron tower height under the condition that satisfies insulation clearance, can effectively realize boring the circuit of having built more.
2. The utility model discloses the utilization is located the fixed hard wire jumper of two V type wire jumper clusters that are parallel arrangement around the tower window, and is fixed stable, can effectively solve its swing and influence the problem in electric clearance, for successfully compressing wire jumper sag height, reduces the iron tower and exhales the title height, and has created the advantage for boring other circuits more, has fine using value widely.
3. The utility model discloses horizontal drilling tower is provided with three groups of hanging point positions below the wire cross arm, and the wire on the strain insulator string horizontally extending to the two sides of each group of hanging point leads the jumper wire out of the outside of the wine glass tower body for hanging, so that the sag height of the jumper wire can be effectively compressed; and the leads corresponding to the three groups of hanging point positions are horizontally arranged, so that the height difference of the leads is reduced compared with the traditional triangular arrangement.
4. The utility model discloses the horizontal drilling is more suitable for especially boring more restricted engineering, and the drilling is more tower and is exhale the title height and not receive wire jumper length restriction, and the point selection is more nimble more bored, and the accessible uses different gold utensils to bore more scheme in order to adapt to under the different span, compression ground wire support height to can further reduce the iron tower height, the specially adapted hillock area.
Drawings
The invention will be described by way of example only and with reference to the accompanying drawings, in which
Fig. 1 is according to the utility model discloses in 500kV circuit two V hard wire jumper cluster horizontal bores the structural schematic diagram of crossing the tower.
Description of reference numerals: a wine glass tower body-1; a wire cross arm-2; a ground wire bracket-3; 4, strain insulator-string; an I-type jumper string-51; a V-shaped jumper string-52; 6-jumper wire; 7-a wire; 8-tower window; 91-a first hard jumper; 92-second hard jumper.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The exemplary embodiment of the present invention is substantially as shown in fig. 1: the embodiment provides a horizontal drilling and crossing tower with middle-phase double-V hard jumper strings in a 500kV circuit, which comprises a wine cup tower body 1, a tower window 8 fixed at the upper end of the wine cup tower body 1 and a wire cross arm 2 horizontally arranged at the top of the tower window 8, wherein two ground wire supports 3 are fixedly arranged right above the wire cross arm 2, specifically, the wire cross arm 2 is fixedly connected with the wine cup tower body 1 through a bolt, and the ground wire supports 3 are fixedly connected with the wire cross arm 2 through bolts; the two ground wire brackets 3 are symmetrically arranged on the lead cross arm 2 about the vertical central line of the lead cross arm 2, and ground wire hanging points are arranged at the tops of the two ground wire brackets 3. By adopting the structural design, the height of the ground wire support 3 can be effectively reduced, the research on the special lightning protection scheme by the ground wire support 3 is the key for realizing reliable drilling, and the combination of a large included angle and a composite insulator is the key for realizing the optimized reduction of the jumper string length.
Specifically, three groups of hanging point positions are arranged along the length direction of the wire cross arm 2, each group of hanging point positions are respectively positioned at the front side and the rear side of the wire cross arm and are respectively used for hanging the strain insulator strings 4, and the ground wire string hanging point is positioned at the outer side of the strain insulator string hanging point; one group of hanging points are located in the middle of the wire cross arm 2, the remaining two groups of hanging points are respectively located at two ends of the wire cross arm 2, the tension string 4 horizontally extends along two sides of each group of hanging points of the wire cross arm 2, a wire 7 is fixedly connected to the extending end, a jumper 6 is arranged below the tension string 4 extending from the front side to the rear side of each group of hanging points, and the front end and the rear end of the jumper 6 are respectively connected with the wires 7 at the front side and the rear side of the wire cross arm 2 corresponding to the hanging point; two V-shaped jumper strings 52 are hung in the tower window 8, the two V-shaped jumper strings 52 are arranged in parallel along the front and the back of the tower window 8, the overhanging parts of the two V-shaped jumper strings 52 are connected with a first hard jumper 91 through hardware fittings, and the two V-shaped jumper strings 52 are used for fixing the first hard jumper 91; the middle parts of the jumper wires corresponding to the hanging points at the middle part of the wire cross arm are connected through a first hard jumper wire 91.
In the specific implementation process, the double-V jumper string can be used for drilling and crossing 500kV transmission lines when the double-V jumper string is drilled and crossed horizontally, the minimum distance between a lead 7 and the ground in a non-residential area is 11m, the length of an ordinary insulator string is 6m, the arc sag of the jumper 6 is about 2m, and the minimum total height of an iron tower is 34m when the ordinary dry-shaped strain tower is drilled and crossed; adopt however two V wire jumper cluster horizontal drilling cross the tower, because the utility model discloses the horizontal drilling is replaced with hard wire jumper the soft wire jumper of crossing the tower, fix through two V type wire jumper cluster 52 that hang at 1 middle part of wineglass tower body, prevent its horizontal hunting, hard wire jumper itself is rigid structure, no wire jumper 6 arc hangs down, according to above-mentioned technical scheme's design, ground wire support 3 can carry out the accurate adjustment according to boring grade span size more, lead the ground wire distance and reduce ground wire support height under the condition that satisfies the lightning protection requirement in proper amount under guaranteeing, in order to reach the purpose that reduces and bore tower overall height more, from this when boring more, can reduce the iron tower height under the condition that satisfies insulating clearance, the realization is bored more to the circuit of building.
Further, the connection mode of the V-shaped jumper string 52 is as follows: hanging parts at two ends of the two V-shaped jumper strings 52 are respectively connected with two end parts at the top of the wine cup tower body 1 through hardware fittings; the two V-shaped jumper strings 52 are respectively positioned at the connecting positions of the wire cross arm 2 and the wine cup tower body 1, so that when the height of the wine cup tower crossing is calculated theoretically, the sag of the hard jumper wire does not need to be considered, therefore, according to a 500kV alternating-current transmission line, the minimum distance between the wire 7 and the ground in a non-residential area is 11m, the minimum distance is 22m when the double V-shaped jumper strings are used for horizontally drilling and crossing the tower, 12m is reduced compared with the common drilling and crossing tower, and the height of the wine cup tower crossing can be effectively reduced; in addition, in the embodiment, the first hard jumper wire 91 is fixed by the two V-shaped jumper wire strings 52 which are arranged in parallel in the front and the back of the tower window 8, so that the problem that the swinging of the first hard jumper wire 91 affects the electrical clearance can be effectively solved, the sag height of the jumper wire is successfully reduced, the tower calling height is reduced, favorable conditions are created for drilling other lines, and the tower has good popularization and use values.
In order to further compress the height of the hanging point at the two ends of the wire cross arm corresponding to the arc sag of the wire jumpers, the front side and the rear side of the lower surfaces at the two ends of the wire cross arm 2 are respectively provided with two I-shaped wire jumper strings 51 which vertically extend downwards, the end parts of the two I-shaped wire jumper strings are connected with a second hard wire jumper 92 through hardware fittings, the middle parts of the wire jumpers at the two ends of the wire cross arm are connected through the second hard wire jumper 92, and the two ends of the wire jumper 6 are also respectively connected with the wires 7 on the tension strings 4 at the front side and the rear side of the hanging. Furthermore, the tension string 4 on two sides of the position of the wire cross arm 2 corresponding to the hanging point horizontally extends along the direction vertical to the wire cross arm 2, and the wires 7 on the tension string 4 corresponding to the three groups of hanging point positions are arranged along the horizontal direction; by adopting the structure, under the condition that the position of the wiring point is not changed, the technical problem that the distance between the lead 7 on two sides of the hanging point position and the ground wire support 3 is small can be effectively solved, the tension string 4 positioned on two sides of the lead cross arm 2 is adopted to lead the lead 7 out, and the lead 7 has a certain horizontal distance S with the hanging point position, wherein the horizontal distance S is determined according to the safety distances of different transmission voltages, so that the distance between the lead 7 and the iron tower is always in the safety distance.
The I-shaped jumper strings 51 at two ends of the wire cross arm 2 have a certain horizontal distance with the corresponding hanging point position of the wire cross arm 2, so that the I-shaped jumper strings 51 are positioned at the outer sides of the tension string 4 at two sides of the corresponding hanging point position of the wire cross arm 2. By adopting the structural design, the I-shaped jumper string 51 is moved outwards to form a pseudo-triangular structure with a certain sag at the connection point of the jumper 6 and the lead 7 and the fixed point of the jumper 6 on the I-shaped jumper string 51, and the sag degree is lower as the outward movement distance is longer, so that the sag height of the jumper 6 can be effectively compressed to further create conditions for drilling other lines; and can effectively avoid guaranteeing the safety distance of wire jumper 6 and crossing the tower through expanding wire cross arm 2 to both ends, can effectively reduce manufacturing cost.
To sum up, the utility model discloses the mode that two V type jumper wire strings 52 are hung in the middle part of the horizontal drilling tower-crossing for fixing the first hard jumper wire 91 is adopted in the horizontal drilling tower-crossing of the utility model, the middle part of the wine glass tower body 1 is compressed by the first hard jumper wire 91, and the two ends jumper wire arc is compressed by the second hard jumper wire 92 connected by the I type jumper wire string at the two ends of the wire cross arm, so as to further compress the jumper wire 6 space, the height of the iron tower can be reduced under the condition of satisfying the insulation clearance, and the drilling of the established line can be effectively realized; meanwhile, the first hard jumper wire 91 is fixed by the two V-shaped jumper wire strings 52 which are arranged in parallel in the front and the back of the tower window 8, so that the fixing is stable, the problem that the swinging of the first hard jumper wire affects the electrical clearance can be effectively solved, the sag height of the jumper wire 6 is successfully reduced, the tower call height is reduced, and favorable conditions are created for drilling other lines. Therefore, the horizontal drilling tower has the following beneficial effects at least:
1. in order to reduce the height of the ground wire bracket 3, a special lightning protection scheme is researched;
2. the sag height is reduced by adopting the hard jumper, and the space of the jumper 6 is reduced;
3. the leads 7 are horizontally arranged, and compared with triangular arrangement, the height difference of the leads 7 is reduced;
4. different ground wire support 3 heights are used to adapt to the drilling schemes under different spans;
the double-V jumper string horizontal drilling and crossing tower is particularly suitable for drilling and crossing limited engineering, the drilling and crossing tower calling height is not limited by the length of the jumper 6, drilling and crossing points are flexibly selected, and the double-V jumper string horizontal drilling and crossing tower has good popularization and use values and is suitable for popularization and application.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the description and drawings of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. The utility model provides a two V hard wire jumper cluster horizontal bores tower more in 500kV circuit, includes the wineglass body of a tower, is fixed in tower window and the level at wineglass body of a tower upper end middle part and sets up in the wire cross arm at tower window top the fixed ground wire support that is provided with on the wire cross arm, its characterized in that: three groups of hanging point positions are arranged along the length direction of the wire cross arm, and each group of hanging point positions are respectively positioned on the front side and the rear side of the wire cross arm and are respectively used for hanging the strain insulator string;
one group of hanging points are positioned in the middle of the wire cross arm, the remaining two groups of hanging points are respectively positioned at two ends of the wire cross arm, the tension string horizontally extends along two sides of each group of hanging points of the wire cross arm, and a wire is fixedly connected to the extending end;
two V-shaped jumper strings are hung in the tower window, the two V-shaped jumper strings are arranged in parallel along the front and the back of the tower window, the overhanging parts of the two V-shaped jumper strings are connected with a first hard jumper through hardware fittings, and the two V-shaped jumper strings are used for fixing the first hard jumper;
jumper wires are arranged below the tension string extending from the front side and the rear side of each group of hanging points, and the front end and the rear end of each jumper wire are respectively connected with the wires on the front side and the rear side of the corresponding hanging point position of the wire cross arm; the middle parts of the jumper wires corresponding to the hanging points at the middle parts of the wire cross arms are connected through a first hard jumper wire.
2. The 500kV circuit middle-phase double-V hard jumper string horizontal drilling and crossing tower according to claim 1, characterized in that: and hanging parts at two ends of the two V-shaped jumper strings are respectively connected with two end parts at the top of the wine cup tower body through hardware fittings.
3. The 500kV circuit middle-phase double-V hard jumper string horizontal drilling and crossing tower according to claim 2, characterized in that: the connecting positions of the two V-shaped jumper strings and the wine cup tower body are respectively positioned at the connecting positions of the wire cross arm and the inside of the top of the wine cup tower body.
4. The 500kV circuit middle-phase double-V hard jumper string horizontal drilling and crossing tower according to claim 1, characterized in that: two I-shaped jumper strings which vertically extend downwards are respectively arranged on the front side and the rear side of the lower surfaces of the two ends of the wire cross arm, the end parts of the two I-shaped jumper strings are connected with a second hard jumper through hardware fittings, and the middle parts of the jumpers at the two ends of the wire cross arm are connected through the second hard jumper.
5. The 500kV circuit middle-phase double-V hard jumper string horizontal drilling tower according to claim 4, characterized in that: the wire cross arm corresponds string some position both sides the strain insulator-string extends along perpendicular to wire cross arm direction level, and the wire on the strain insulator-string that three groups string some positions correspond arranges the setting along the horizontal direction.
6. The 500kV line middle-phase double-V hard jumper string horizontal drilling tower according to claim 5, characterized in that: the I-shaped jumper strings at two ends of the wire cross arm and the corresponding hanging point positions of the wire cross arm have a certain horizontal distance, so that the I-shaped jumper strings are positioned at the outer sides of the tension string at two sides of the corresponding hanging point positions of the wire cross arm.
7. The 500kV line middle-phase double-V hard jumper string horizontal drilling tower according to any one of claims 1 to 6, characterized in that:
two ground wire supports are fixedly arranged right above the wire cross arm, the two ground wire supports are symmetrically arranged on the wire cross arm relative to the vertical central line of the wire cross arm, and ground wire hanging points are arranged at the tops of the two ground wire supports.
8. The 500kV line middle-phase double-V hard jumper string horizontal drilling tower according to claim 7, characterized in that: the wire cross arm is fixedly connected with the wine glass tower body through a bolt, and the ground wire support is fixedly connected with the wire cross arm through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021439123.2U CN213234465U (en) | 2020-07-21 | 2020-07-21 | Horizontal drilling and crossing tower for middle-phase double-V hard jumper wire strings in 500kV line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021439123.2U CN213234465U (en) | 2020-07-21 | 2020-07-21 | Horizontal drilling and crossing tower for middle-phase double-V hard jumper wire strings in 500kV line |
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| Publication Number | Publication Date |
|---|---|
| CN213234465U true CN213234465U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021439123.2U Active CN213234465U (en) | 2020-07-21 | 2020-07-21 | Horizontal drilling and crossing tower for middle-phase double-V hard jumper wire strings in 500kV line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213234465U (en) |
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2020
- 2020-07-21 CN CN202021439123.2U patent/CN213234465U/en active Active
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