CN113949005B - Method for realizing stable transition of jumper wire of overhead transmission line by respectively taking inclined plane and vertical plane as rotating planes - Google Patents
Method for realizing stable transition of jumper wire of overhead transmission line by respectively taking inclined plane and vertical plane as rotating planes Download PDFInfo
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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Abstract
The invention discloses a method for realizing stable transition of jumper wires of an overhead transmission line by taking an inclined plane and a vertical plane as rotating planes respectively, which belongs to the technical field of electric power fittings. The method is very unique, ingenious in conception and low in manufacturing cost, solves the problem of dead-bending of the jumper wire in a real sense at extremely low cost, has obvious social and economic benefits, has very wide market application prospects, makes important contribution to the construction of ultrahigh voltage transmission lines in China, and has very important significance in the electric power hardware industry.
Description
Technical Field
The invention relates to the technical field of electric power fittings, in particular to a method which is unique, ingenious in conception, capable of reducing the production cost of products to be below 30% of the traditional production cost and wide in market application prospect and respectively takes an inclined plane and a vertical plane as rotating planes to realize stable transition of jumper wires of an overhead transmission line.
Background
The power industry is a fundamental industry related to the national civilization, is a utility for serving thousands of households, and plays a significant role in national economy. The method has the advantages of studying the future power generation capability development trend in China, mastering the power demand change situation, adjusting the power supply timely, and having important significance for promoting the sustainable development of the power industry in China and maintaining the healthy development of national economy.
The jumper wire of the overhead transmission line is called as the jumper wire for short, is a conductive device for connecting wire strain clamps on two sides of a strain tower and has the function of keeping a sufficient electrical distance between a charged wire and a conductive part of the tower. The jumper wires are generally classified into a soft jumper wire and a hard jumper wire. The flexible jumper wire is a wire directly connected with the adjacent strain section through a flexible wire, and the flexible wire is only suitable for the power transmission line with a lower voltage grade below 500 KV. The soft jumper used in the ultra-high direct current transmission line engineering has a series of problems of large jumper sag, large wind deflection angle, long cross arm size of a strain tower and the like, so that a hard jumper is adopted in the ultra-high direct current transmission line engineering and is also called as a rigid jumper.
The rigid jumper is called 'rigid jump' for short, and can be divided into an aluminum tube type rigid jumper and a squirrel-cage type rigid jumper according to the design type. The aluminum pipe type rigid jump is characterized in that an aluminum pipe is adopted as a flow guide body in the middle section, two ends of the aluminum pipe are connected with strain clamps on two sides of an iron tower through flexible wires, and the aluminum pipe type rigid jump mainly comprises two suspension modes, namely a suspension mode and a cable-stayed suspension mode. The squirrel-cage rigid tripping adopts sections such as steel pipes, angle steels, channel steels and the like as main materials of an intermediate framework, the flexible conductors are fixed on the supporting pipe through the spacer, and the supporting pipe is connected to a strain insulator string or an iron tower through a pull rod or a jumper insulator string.
The rigidity of the flexible conductor is increased by the rigid jumping, the sag of the jumper is reduced, and the size of the cross arm of the tension tower is shortened. But the rigid jumper always has the difficult problem that the angle is difficult to adjust. In the construction process, due to the influence of factors such as the structural type of the tension tower, the rigidity of the wire, the relative position of the line sub-wire and the like, the phenomenon of 'dead bend' of the flexible wire can occur at the leading-in end and/or the leading-out end which just jumps, and the service life and the power transmission safety of the power transmission line are seriously threatened.
In order to solve the problems, the Chinese patent with the patent application number of 2013101935261, the patent application date of 2013.05.23 and the invention creation name of a rack type adjusting elbow provides an angle-adjustable elbow for just jumping, and the elbow mainly comprises an adjusting flange plate, a support flange plate and a bolt; the adjusting flange plate and the support flange plate which are oppositely arranged on the same axis are connected through the bolt; the inner sides of the adjusting flange plate and the support flange plate are symmetrically provided with matched rectangular bulges by taking the axis as a center; the root of the bulge of the adjusting flange plate is provided with a positioning hole, and an arc-shaped rack and an arc-shaped hole are arranged by taking the positioning hole as the circle center; a positioning hole is formed in the top of the protrusion of the support flange plate, an arc-shaped rack matched with the adjusting flange plate is arranged by taking the positioning hole of the support flange plate as a circle center, and a round hole matched with the arc-shaped hole of the adjusting flange plate is formed right above the positioning hole of the support flange plate; the adjusting bolts are arranged in the arc-shaped holes and the round holes; bolts are arranged in the positioning holes of the support flange plate and the adjusting flange plate; the adjusting flange plate and the support flange plate are movably connected through bolts arranged in the positioning holes; the steel pipe framework and the rack type adjusting elbow are arranged on the same central axis, and a gear flange plate and a fixed flange plate are arranged at two ends of the steel pipe framework respectively. Although the angle adjustment has also been realized to the elbow in this scheme, its structural design is complicated, the high altitude construction degree of difficulty, and all parts are nonstandard spare, and production processes is many, and technology is complicated, and the part precision requirement of processing is high, and production manufacturing cost is high, and market promotion hinders greatly, and the practicality is not strong, can not solve the flexible conductor "hard bending" problem from the true sense.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the method which is unique, has skillful conception, can reduce the production cost of products to be below 30% of the traditional production cost, has extremely high social and economic benefits and wide market application prospect and respectively uses the inclined plane and the vertical plane as the rotating plane to realize the stable transition of the jumper wire of the overhead transmission line.
The invention is realized by the following technical scheme:
a method for realizing stable transition of jumper wires of an overhead transmission line by respectively taking an inclined plane and a vertical plane as rotating planes comprises the following operation steps:
a. the rigid jumper is designed into a sectional assembly type structure and comprises a middle supporting tube positioned in the middle and tail end supporting tubes positioned at two ends of the middle supporting tube;
b. the middle supporting tube at the middle position is fixedly suspended on the iron tower through a connecting device;
c. two ends of the middle supporting tube are respectively fixedly connected with the tail end supporting tube through angle adjusters; the angle regulator takes an inclined plane as a rotating plane;
d. assuming that the spatial position of the rigid jumper to be aligned at the moment is a point a; the circle center of the rotating inclined plane of the angle regulator is a point b; the connecting line of the point a and the point b is an ab auxiliary line, and the included angle between the ab auxiliary line and the axis of the middle supporting tube is the angle theta required to be adjusted;
e. rotating the tail end supporting tube by taking the inclined plane as a rotating plane to enable the angle of an included angle between the tail end supporting tube and the middle supporting tube to be equal to theta;
f. taking the end support tube and the angle adjuster as an integral piece; taking the vertical surfaces at the two ends of the middle supporting tube as secondary rotating surfaces, and rotating the integral piece until the tail end supporting tube is aligned to the direction of the point a;
g. thus, the flexible conductor from the spatial position a can be smoothly transited to the rigid jumper.
Preferably, the angle adjuster is a bevel rigid jumper angle adjuster, and comprises a bevel adjusting component A and a bevel adjusting component B;
the bevel angle adjusting assembly A comprises an angle adjusting pipe A, two ends of the angle adjusting pipe A are respectively fixedly provided with a flange plate, one of the two flange plates is a plane flange plate A, the other flange plate is an inclined plane flange plate A, and the plane flange plate A is fixedly connected with the tail end supporting pipe;
the bevel angle adjusting component B comprises an angle adjusting pipe B, two ends of the angle adjusting pipe B are respectively fixedly provided with a flange plate, one of the two flange plates is a plane flange plate B, the other flange plate is an inclined plane flange plate B, and the plane flange plate B is fixedly connected with the middle supporting pipe; the inclined angle of the inclined flange A is equal to that of the inclined flange B, but the inclined directions of the inclined flange A and the inclined flange B are opposite, and the inclined flange A and the inclined flange B are fixedly connected after being spliced.
Preferably, the inclined flange A is provided with an indication mark; the inclined flange B is provided with a dial.
Preferably, the indication mark on the inclined flange A is imprinted on the side wall of the inclined flange A; the dial scale on the inclined flange B is a 0-360 degree dial scale imprinted on the side wall of the inclined flange B.
Preferably, the plane flange plate B is provided with an indication mark; the flanges matched with the plane flange B and fixed at the two tail ends of the middle supporting pipe are middle adjusting connecting flanges, the middle adjusting connecting flanges are fixedly connected with the plane flange B, and a dial scale is arranged on the middle adjusting connecting flanges.
Preferably, the indication mark on the plane flange plate B is imprinted on the side wall of the plane flange plate B; the dial scale on the middle adjusting connecting flange plate is a 0-360 degree dial scale printed on the side wall of the middle adjusting connecting flange plate.
Preferably, the inclined flange A and the inclined flange B are fixedly connected through a bolt fastener; the inclined flange A is circumferentially provided with a plurality of threaded holes, and the inclined flange B is circumferentially and correspondingly provided with a plurality of waist-shaped holes; or a plurality of threaded holes are formed in the circumferential direction of the inclined flange B, and a plurality of waist-shaped holes are correspondingly formed in the circumferential direction of the inclined flange A.
Preferably, the plane flange B is fixedly connected with the middle adjusting connecting flange through a bolt fastener; the circumferential direction of the plane flange plate B is provided with a plurality of threaded holes, and the circumferential direction of the middle adjusting connecting flange plate is correspondingly provided with a plurality of waist-shaped holes; or a plurality of threaded holes are formed in the circumferential direction of the middle adjusting connecting flange plate, and a plurality of waist-shaped holes are correspondingly formed in the circumferential direction of the plane flange plate B.
Preferably, the connecting device is an insulator string or a pull rod.
Preferably, the rigid jumper is a squirrel-cage rigid jumper or an aluminum pipe rigid jumper.
Compared with the prior art, the invention has the beneficial effects that:
the method is very unique, the framework which is just jumped is designed into a split structure, the supporting tubes at the tail ends of the two ends firstly use the inclined planes as the rotating reference surfaces to change the size of an included angle between the supporting tubes and the middle supporting tube, and then the vertical plane is used as the secondary rotating reference surface to change the direction in the circumferential direction; the design is ingenious, simple and not simple;
the invention is easy to implement and manufacture, only the inclined plane structure is a non-standard part, and the rest are standard parts, while the inclined plane structure is a non-standard part, but the production process is very simple, and the manufacturing cost is very low; the production cost of the angle regulator produced by the method of the invention is less than 30 percent of the production cost of the rack-type regulating elbow;
the invention has very strong practicability, solves the problem of dead-bending of the jumper wire in a real sense with extremely low cost, has very obvious social and economic benefits, has very wide market application prospect, makes important contribution to the construction of ultrahigh voltage transmission lines in China, and has very important significance in the electric power fitting industry.
Drawings
FIG. 1 is a schematic diagram of a rigid jumper body structure to which the method of the present invention is applied;
FIG. 2 is a second schematic diagram of the structure of the rigid jumper body shown in FIG. 1 according to the present invention;
FIG. 3 is a first perspective view of the rigid jumper body structure shown in FIG. 1 according to the present invention;
FIG. 4 is a schematic perspective view of the rigid jumper main body structure shown in FIG. 1 according to the present invention;
FIG. 5 is a first schematic view of the bevel rigid jumper angle adjuster of the present invention;
FIG. 6 is a second schematic view of the bevel rigid jumper angle adjuster of the present invention;
FIG. 7 is a third schematic view of the bevel rigid jumper angle adjuster of the present invention;
FIG. 8 is a first schematic view of the angle adjustment of the rigid jumper body structure illustrated in FIG. 1 according to the present invention;
fig. 9 is a second schematic angle adjustment of the rigid jumper body structure illustrated in fig. 1 according to the present invention.
In the figure: 1. a middle support tube; 11. the middle adjusting is connected with the flange plate; 2. a tail end supporting tube; 3. an oblique angle rigid jumper wire angle adjuster; 31. a bevel angle adjustment assembly A;311. an angle adjusting pipe A;312. a plane flange A;313. an inclined flange A;32. a bevel angle adjustment assembly B;321. an angle adjusting pipe B;322. a plane flange B;323. and an inclined flange B.
Detailed Description
In order to make the reader better understand the design spirit of the present invention, the following description will be made with reference to the embodiments. It should be noted that the following paragraphs may refer to terms of orientation, including but not limited to "upper, lower, left, right, front, rear" and the like, which are all based on the visual orientation shown in the drawings corresponding to the specification, and should not be construed as limiting the scope or technical aspects of the present invention, but merely as facilitating better understanding of the technical aspects of the present invention by those skilled in the art.
In the description of the present specification, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or conductive connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The method can be used for the squirrel-cage rigid jumper and can also be used for the aluminum pipe type rigid jumper. When the support tube is used for the squirrel-cage rigid jumper, the middle support tube is the middle framework main material of the squirrel-cage rigid jumper. When the middle supporting tube is used for the aluminum tube type rigid jumper, the middle supporting tube is the aluminum tube of the aluminum tube type rigid jumper.
Example 1:
as shown in fig. 1 to 4 of the attached drawings of the specification, a method for realizing smooth transition of jumper wires of an overhead transmission line by respectively using an inclined plane and a vertical plane as rotating planes comprises the following operation steps:
a. the rigid jumper is designed into a sectional assembly type structure and comprises a middle supporting tube 1 positioned in the middle and tail end supporting tubes 2 positioned at two ends of the middle supporting tube 1; the middle supporting tube 1 can be a whole tube or assembled by a plurality of tubes; generally, for convenience of transportation, the middle supporting tube is also designed into a sectional type, and the sectional sub-middle supporting tubes are fixedly connected through a common flange and a bolt fastener;
b. the middle supporting tube 1 at the middle position is fixedly suspended on an iron tower through a connecting device; the connecting device is an insulator string or a pull rod; certainly, the middle supporting tube 1 is fixedly connected with the tail end of the insulator string or the pull rod through a hoop structure, which is the prior art;
c. two ends of the middle supporting tube 1 are respectively fixedly connected with the tail end supporting tube 2 through an angle adjuster; the angle regulator takes an inclined plane as a rotating plane; the inclined plane is used as a rotating plane, so that the included angle between the tail end supporting tube and the middle supporting tube can be changed between 90 degrees and 180 degrees;
d. assuming that the spatial position of the rigid jumper to be aligned at the moment is a point a; the circle center of the rotating inclined plane of the angle regulator is a point b; the connecting line of the point a and the point b is an ab auxiliary line, and the included angle between the ab auxiliary line and the axis of the middle supporting tube 1 is the angle theta required to be adjusted;
e. rotating the tail end supporting tube 2 by taking the inclined plane as a rotating plane to enable the angle of an included angle between the tail end supporting tube 2 and the middle supporting tube 1 to be equal to theta;
f. the end support tube 2 and the angle adjuster are taken as an integral piece; taking the vertical surfaces at the two ends of the middle supporting tube 1 as secondary rotating surfaces, and rotating the integral piece until the tail end supporting tube 2 is aligned to the direction of the point a;
g. thus, the flexible conductor from the point a can smoothly transit to the rigid jumper.
The method is very unique, the framework which is just jumped is designed into a split structure, the supporting tubes at the tail ends of the two ends firstly use the inclined planes as the rotating reference surfaces to change the included angle between the supporting tubes and the middle supporting tube, and then the vertical plane is used as the secondary rotating reference surface to change the direction in the circumferential direction; the design is ingenious, simple and not simple;
the embodiment is easy to implement and manufacture, only the inclined plane structure is a non-standard part, and the other parts are standard parts, while the inclined plane structure is a non-standard part, but the production process is very simple, and the manufacturing cost is very low; the production cost of the angle adjuster of the embodiment is less than 30% of that of the rack type adjusting elbow;
the practical applicability of the embodiment is very strong, the problem of dead-bending of the jumper wire is really solved at extremely low cost, the social and economic benefits are very obvious, the market application prospect is very wide, important contribution is made to the construction of ultrahigh voltage transmission lines in China, and the practical application has very important significance in the electric power fitting industry.
Example 2:
on the basis of the above embodiments, the present embodiment continues to describe the technical features and functions of the technical features in the present invention in detail to help those skilled in the art fully understand the technical solutions of the present invention and reproduce the same.
As shown in fig. 5 to 7 of the drawings attached to the specification, the angle adjuster of the present embodiment is specifically a bevel rigid jumper angle adjuster 3. The bevel rigid jumper angle adjuster 3 comprises a bevel adjusting component A31 and a bevel adjusting component B32; the bevel angle adjusting component A31 comprises an angle adjusting pipe A311, two ends of the angle adjusting pipe A311 are respectively fixedly provided with a flange plate, one of the two flange plates is a plane flange plate A312, the other flange plate is an inclined plane flange plate A313, and the plane flange plate A312 is fixedly connected with the tail end supporting pipe 2;
the bevel angle adjusting component B32 comprises an angle adjusting pipe B321, two ends of the angle adjusting pipe B321 are respectively and fixedly provided with a flange plate, one of the two flange plates is a plane flange plate B322, the other flange plate is an inclined plane flange plate B323, and the plane flange plate B322 is fixedly connected with the middle supporting pipe 1; the inclined angle of the inclined flange A313 is equal to that of the inclined flange B323, but the inclined directions are opposite, and the inclined flange A313 and the inclined flange B323 are fixedly connected after being spliced. The bevel rigid jumper angle regulator has the advantages of simple and ingenious structural design, greatly reduced production and processing procedures, simple production process, greatly reduced production cost of the angle regulator, less than 30% of the production cost of the rack type regulating elbow, and very obvious social and economic benefits.
The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes comprises the following operation steps:
a. the rigid jumper is designed into a sectional assembly type structure and comprises a middle supporting tube 1 positioned in the middle and tail end supporting tubes 2 positioned at two ends of the middle supporting tube 1; the middle supporting tube 1 can be a whole tube or assembled by a plurality of tubes; generally, for convenience of transportation, the middle supporting tube is also designed into a sectional type, and the sectional sub-middle supporting tubes are fixedly connected through a common flange and a bolt fastener;
b. the middle supporting tube 1 at the middle position is fixedly suspended on an iron tower through a connecting device; the connecting device is an insulator string or a pull rod; certainly, the middle supporting tube 1 is fixedly connected with the tail end of the insulator string or the pull rod through a hoop structure, which is the prior art;
c. two ends of the middle supporting tube 1 are respectively fixedly connected with the tail end supporting tube 2 through an oblique angle rigid jumper angle adjuster 3; the oblique angle rigid jumper wire angle regulator takes an oblique plane as a rotating plane; the inclined plane is a rotating plane, so that the included angle between the tail end supporting tube and the middle supporting tube can be changed between 90 degrees and 180 degrees;
d. assuming that the spatial position of the rigid jumper to be aligned at the moment is a point a; the circle center of the rotating inclined plane of the angle regulator is a point b; the connecting line of the point a and the point b is an ab auxiliary line, and the included angle between the ab auxiliary line and the axis of the middle supporting tube 1 is the angle theta required to be adjusted;
e. the tail end supporting tube 2 is fixedly connected with the bevel angle adjusting component A31, the bevel angle adjusting component B32 is fixedly connected with the middle supporting tube 1 in advance, the bevel of the bevel flange B323 is taken as a rotating surface, and the tail end supporting tube 2 and the bevel angle adjusting component A31 are rotated as a whole until the included angle between the tail end supporting tube 2 and the middle supporting tube 1 is equal to theta; after the adjustment is finished, fixing an inclined flange A313 and an inclined flange B323;
f. taking the tail end supporting tube 2 and the bevel angle rigid jumper angle adjuster 3 as an integral piece; taking the vertical surface of the plane flange B322 as a rotating surface, and rotating the integral piece until the tail end supporting tube 2 is aligned to the direction of the point a;
g. thus, the flexible conductor from the spatial position a can be smoothly transited to the rigid jumper.
Fig. 8-9 are schematic views illustrating the rigid jumper adjusted to a certain angle according to the present embodiment.
The beneficial effects of embodiment 1 are also achieved in this embodiment, and are not described herein again to avoid the tedious text.
Example 3:
in this embodiment, a dial is designed based on embodiment 2. With the dial, the angle can be quickly adjusted by constructors according to design drawings.
In this embodiment, the inclined flange a313 is provided with an indication mark, and the inclined flange B323 is provided with a dial. Specifically, the indication mark on the inclined flange A313 is imprinted on the side wall of the inclined flange A313; the scale disc on the inclined flange B323 is a 0-360 degree scale disc imprinted on the side wall of the inclined flange B323.
Similarly, the present embodiment further provides an indication mark on the planar flange B322. The flanges which are matched with the plane flange B322 and fixed at the two tail ends of the middle supporting pipe 1 are middle adjusting connecting flanges 11, the middle adjusting connecting flanges 11 are fixedly connected with the plane flange B322, and the middle adjusting connecting flanges 11 are provided with dials. Specifically, the indication mark on the planar flange B322 is imprinted on the sidewall of the planar flange B322; the dial scale on the middle adjusting connecting flange plate 11 is a 0-360 degree dial scale printed on the side wall of the middle adjusting connecting flange plate 11.
The smooth transition method of this embodiment is the same as that of embodiment 2, and the construction steps of this embodiment will be described mainly in this embodiment.
Taking the squirrel-cage rigid jumper as an example, the construction steps of this embodiment are roughly: as shown in fig. 1, the rigid jumper main body structure is firstly assembled on the ground and horizontally placed, the 0 ° positions of the dials on the inclined flange B323 and the middle adjusting joining flange 11 are all in the front view direction, the indication mark on the inclined flange a313 is aligned with the 0 ° scale line of the inclined flange B323, and the indication mark on the plane flange B322 is aligned with the 0 ° scale line of the middle adjusting joining flange. The hoop structure fixed on the middle supporting tube 1 and fixedly connected with the insulator string is arranged in the vertical direction, and then, as in the traditional process, after the spacing rods and the heavy hammer sheets are installed, the hoop structure is hoisted to the high altitude through a motor-driven winching machine, and after the hoop structure is in place, the hoop structure is fixedly connected with the insulator string on the iron tower. Then, the constructor adjusts the angle according to the design drawing, the degree of rotation of the inclined flange A313 relative to the inclined flange B323 can be marked on the design drawing, the degree of rotation of the plane flange B322 relative to the connection flange 11 can be adjusted, and the constructor only needs to operate in a foolproof manner. Of course, the angles of the two oblique angle rigid jumper angle adjusters 3 to be adjusted may be different, and the same operation is adopted respectively.
In a word, the size of the included angle between the end supporting tube 2 and the middle supporting tube 1 is not required to be known by constructors, and only the indicating marks are required to be aligned to the corresponding degrees of the dial according to the marks on the drawing. The embodiment has lower requirement on professional skills, is simple and convenient to operate in high-altitude operation and is easy to construct.
Example 4:
this embodiment is further described on the basis of embodiment 2 or embodiment 3.
The inclined flange A313 and the inclined flange B323 of the embodiment are fixedly connected through a bolt fastener; a plurality of threaded holes are formed in the circumferential direction of the inclined flange A313, and a plurality of kidney-shaped holes are correspondingly formed in the circumferential direction of the inclined flange B323; or a plurality of threaded holes are formed in the circumferential direction of the inclined flange B323, and a plurality of kidney-shaped holes are correspondingly formed in the circumferential direction of the inclined flange A313. That is to say, the inclined flange A and the inclined flange B are provided with the threaded holes at any time, and after one threaded hole is selected, the other one is correspondingly provided with the waist-shaped hole.
Similarly, the plane flange B322 is fixedly connected with the middle adjusting connecting flange 11 through a bolt fastener; a plurality of threaded holes are formed in the circumferential direction of the plane flange plate B322, and a plurality of waist-shaped holes are correspondingly formed in the circumferential direction of the middle adjusting connection flange plate 11; or a plurality of threaded holes are formed in the circumferential direction of the middle adjusting connecting flange plate 11, and a plurality of waist-shaped holes are correspondingly formed in the circumferential direction of the plane flange plate B322.
The waist-shaped hole is convenient to adjust, under the condition that the degree span width is not large, the bolt fastener can be adjusted and loosened without completely disassembling the bolt fastener, and the high-altitude operation difficulty of constructors is further reduced. In addition, all flanges are provided with reinforcing ribs for increasing the strength.
Therefore, the invention is not to be limited to the specific embodiments, but rather, all equivalent changes and modifications in the shapes, structures, characteristics and spirit of the invention are intended to be included within the scope of the appended claims.
Claims (10)
1. A method for realizing stable transition of jumper wires of an overhead transmission line by respectively taking an inclined plane and a vertical plane as rotating planes is characterized by comprising the following operation steps:
a. the rigid jumper is designed into a sectional assembly type structure and comprises a middle supporting tube positioned in the middle and tail end supporting tubes positioned at two ends of the middle supporting tube;
b. the middle supporting tube in the middle position is fixedly suspended on the iron tower through a connecting device;
c. two ends of the middle supporting tube are respectively fixedly connected with the tail end supporting tube through angle adjusters; the angle regulator takes an inclined plane as a rotating plane;
d. assuming that the spatial position of the rigid jumper to be aligned at the moment is a point a; the circle center of the rotating inclined plane of the angle regulator is a point b; the connecting line of the point a and the point b is an ab auxiliary line, and the included angle between the ab auxiliary line and the axis of the middle supporting tube is the angle theta required to be adjusted;
e. rotating the tail end supporting tube by taking the inclined plane as a rotating plane to enable the angle of an included angle between the tail end supporting tube and the middle supporting tube to be equal to theta;
f. taking the end support tube and the angle adjuster as an integral piece; taking the vertical surfaces at the two ends of the middle supporting tube as secondary rotating surfaces, and rotating the integral piece until the tail end supporting tube is aligned to the direction of the point a;
g. thus, the flexible conductor from the point a can smoothly transit to the rigid jumper.
2. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 1, is characterized in that:
the angle adjuster is an oblique angle rigid jumper angle adjuster and comprises an oblique angle adjusting component A and an oblique angle adjusting component B;
the bevel angle adjusting assembly A comprises an angle adjusting pipe A, two ends of the angle adjusting pipe A are respectively fixedly provided with a flange plate, one of the two flange plates is a plane flange plate A, the other flange plate is an inclined plane flange plate A, and the plane flange plate A is fixedly connected with the tail end supporting pipe;
the bevel angle adjusting component B comprises an angle adjusting pipe B, two ends of the angle adjusting pipe B are respectively fixedly provided with a flange plate, one of the two flange plates is a plane flange plate B, the other one of the two flange plates is an inclined plane flange plate B, and the plane flange plate B is fixedly connected with the middle supporting pipe; the inclined angle of the inclined flange A is equal to that of the inclined flange B, but the inclined directions of the inclined flange A and the inclined flange B are opposite, and the inclined flange A and the inclined flange B are fixedly connected after being spliced.
3. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 2, is characterized in that: the inclined flange A is provided with an indication mark; the inclined flange B is provided with a dial.
4. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 3, is characterized in that: the indication mark on the inclined flange A is imprinted on the side wall of the inclined flange A; the dial scale on the inclined flange B is a 0-360 degree dial scale imprinted on the side wall of the inclined flange B.
5. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 2, is characterized in that: the plane flange plate B is provided with an indication mark; the flanges matched with the plane flange B and fixed at the two tail ends of the middle supporting tube are middle adjusting connecting flanges, the middle adjusting connecting flanges are fixedly connected with the plane flange B, and a dial is arranged on the middle adjusting connecting flanges.
6. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 5, wherein the method comprises the following steps: the indication mark on the plane flange plate B is imprinted on the side wall of the plane flange plate B; the dial scale on the middle adjusting connecting flange plate is a 0-360 degree dial scale printed on the side wall of the middle adjusting connecting flange plate.
7. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 2, characterized by comprising the following steps: the inclined flange A and the inclined flange B are fixedly connected through a bolt fastener;
the inclined flange A is circumferentially provided with a plurality of threaded holes, and the inclined flange B is circumferentially and correspondingly provided with a plurality of waist-shaped holes; or a plurality of threaded holes are formed in the circumferential direction of the inclined flange B, and a plurality of waist-shaped holes are correspondingly formed in the circumferential direction of the inclined flange A.
8. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 2, is characterized in that: the plane flange B is fixedly connected with the middle adjusting connecting flange through a bolt fastener;
the circumferential direction of the plane flange plate B is provided with a plurality of threaded holes, and the circumferential direction of the middle adjusting connecting flange plate is correspondingly provided with a plurality of waist-shaped holes; or a plurality of threaded holes are formed in the circumferential direction of the middle adjusting connecting flange plate, and a plurality of waist-shaped holes are correspondingly formed in the circumferential direction of the plane flange plate B.
9. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 1, is characterized in that: the connecting device is an insulator string or a pull rod.
10. The method for realizing the stable transition of the jumper wire of the overhead transmission line by respectively taking the inclined plane and the vertical plane as the rotating planes according to claim 1, is characterized in that: the rigid jumper is a squirrel-cage rigid jumper or an aluminum pipe rigid jumper.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360822.7A CN113949005B (en) | 2021-11-17 | 2021-11-17 | Method for realizing stable transition of jumper wire of overhead transmission line by respectively taking inclined plane and vertical plane as rotating planes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111360822.7A CN113949005B (en) | 2021-11-17 | 2021-11-17 | Method for realizing stable transition of jumper wire of overhead transmission line by respectively taking inclined plane and vertical plane as rotating planes |
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| CN113949005A CN113949005A (en) | 2022-01-18 |
| CN113949005B true CN113949005B (en) | 2023-01-24 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4798509B2 (en) * | 2007-07-19 | 2011-10-19 | 中国電力株式会社 | Suspended jumper device |
| KR100834772B1 (en) * | 2008-03-04 | 2008-06-05 | (주)영종합기술단 | Jumper cable clamp apparatus for overhead transmission line |
| CN101938103A (en) * | 2010-08-20 | 2011-01-05 | 中国电力工程顾问集团中南电力设计院 | End steering cage jumper wire |
| CN103311863B (en) * | 2013-05-23 | 2016-12-28 | 国家电网公司 | A kind of bolt type adjusting elbow |
| CN103311865B (en) * | 2013-05-23 | 2016-08-10 | 国家电网公司 | A kind of rack type regulation elbow |
| CN103474932A (en) * | 2013-10-10 | 2013-12-25 | 江苏天南电力器材有限公司 | Universal adjustable squirrel cage jumper regulator |
| CN108565812A (en) * | 2018-02-13 | 2018-09-21 | 中国电建集团河南电力器材有限公司 | A kind of rotation adjustment device of steel pipe skeleton wire jumper |
| CN210724132U (en) * | 2019-10-23 | 2020-06-09 | 中国电力工程顾问集团西南电力设计院有限公司 | High-altitude 500kV upper-resistance type double-I-shaped strut pipe cage type jumper string |
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