Tubular bus jumper wire structure and tubular bus supporting hardware fitting thereof
Technical Field
The invention relates to a tubular bus jumper wire structure and a tubular bus supporting hardware fitting thereof.
Background
In a high voltage direct current transmission system, a converter station serves as a conversion site between alternating current and direct current, and the stability of the converter station plays an important role in high voltage direct current transmission. The transmission lines in the converter station mainly comprise tubular buses and transmission conductors, and in the arrangement process of the tubular buses and the transmission conductors, the transmission conductors are often arranged along the tubular buses, at the moment, hardware fittings connected to the tubular buses and end sealing balls at the ends of the tubular buses can affect the arrangement of the transmission conductors, and the transmission conductors need to be jumped at the positions to bypass the obstacles. At present, transmission conductor generally adopts a higher link fitting when the wire jumper, prop transmission conductor high, with this messenger transmission conductor walks around the barrier, this mode is in the in-service use process, on the one hand, in order to make transmission conductor have higher line height of walking in order to cross the barrier, link fitting need have higher support height, make link fitting volume great, the cost is higher, on the other hand, to the great transmission conductor of hardness, the transmission cable is when link fitting, because link fitting's the general level of cable channel sets up, lead to cable channel on the link fitting to walk the line direction inconsistent with the cable, the cable need buckle the back just can pass through the cable channel, not only be difficult to the construction, and damage transmission conductor easily.
Disclosure of Invention
The invention aims to provide a tubular busbar support fitting which does not damage a transmission cable and has small volume; the invention also aims to provide a tubular busbar jumper structure using the tubular busbar support fitting.
In order to achieve the purpose, the technical scheme 1 of the tubular bus supporting hardware fitting provided by the invention is as follows: the utility model provides a tubular busbar supports gold utensil, includes that the tubular busbar that the axis extends along the fore-and-aft direction presss from both sides, is connected with the fixing base in the periphery that the tubular busbar pressed from both sides, is equipped with cable fixed knot on the fixing base and constructs, cable fixed knot constructs coaxial cable fixed orifices around having one or two, the axis of cable fixed orifices from inlet wire end to outlet terminal tilt up gradually or the downward sloping gradually.
The tubular busbar supporting hardware fitting is characterized in that the axis of the cable fixing hole is obliquely arranged, and the axis of the cable fixing hole gradually inclines upwards from the wire inlet side to the wire outlet side, firstly, the axis inclination direction of the cable fixing hole is consistent with the wire routing direction required by the cable, the cable does not need to be bent or has a small bending angle when entering the cable fixing hole, so that the phenomenon of cable damage caused by the inconsistency between the wire routing direction of the cable and the axis direction of the cable fixing hole is avoided, in addition, the axis of the cable fixing hole is obliquely arranged, the cable routing direction can be guided, the cable is enabled to be routed upwards to cross an obstacle, the highest jumper height of the power transmission cable does not depend on the height of the tubular busbar supporting hardware fitting, but mainly depends on the size of the guiding angle of the tubular busbar supporting hardware fitting and the hardness of the power transmission cable, the larger the guiding angle is, and the larger the hardness, the higher the jumper height of the cable. Therefore, the tubular bus supporting fitting does not need to be arranged at too high height, and the jumper of the cable can be realized through the design of the guide angle and the hardness of the transmission cable, so that the size of the tubular bus supporting fitting is reduced, and the cost of the tubular bus supporting fitting is reduced.
The technical scheme 2 of the tubular bus supporting fitting is further improved on the basis of the technical scheme 1: the fixing seat gradually inclines upwards or downwards from the wire inlet side to the wire outlet side so as to enable the axis of the cable fixing hole arranged on the fixing seat to gradually incline upwards or downwards. The fixing seat is arranged in an inclined mode, so that the inclined arrangement of the axis of the cable fixing hole can be realized, and rainwater can be prevented from being gathered on the fixing seat.
The technical scheme 3 of the tubular bus supporting fitting is further improved on the basis of the technical scheme 2: the cable fixing structure comprises a spacing rod, and the cable clamp hole of the spacing rod forms the cable fixing hole.
The technical scheme 4 of the tubular bus supporting fitting is further improved on the basis of the technical scheme 3: the conductor spacer has two, and two conductor spacers are around the interval set up and the wire clamp hole one-to-one coaxial correspondence around the two.
The technical scheme 5 of the tubular bus supporting fitting is further improved on the basis of the technical scheme 3: the spacer is connected with the fixed seat through a connecting column connected with the lower end of the spacer.
The technical scheme 6 of the tubular busbar support fitting is further improved on the basis of any one of the technical schemes 1 to 5: the fixing seat is provided with an insulating structure used for realizing electrical insulation between the cable fixing structure and the pipe bus clamp. When the transmission cable and the tubular bus have potential differences due to passing through different devices, the insulating structure can realize effective insulation of the transmission cable and the tubular bus, and corona is avoided between the transmission cable and the tubular bus.
The technical scheme 7 of the tubular bus supporting fitting is further improved on the basis of the technical scheme 6: the fixing base comprises a bottom plate and a connecting plate, the bottom plate is used for being connected with the pipe bus clamp, the connecting plate is used for being connected with the cable fixing structure, the bottom plate is connected with the connecting plate through a connecting bolt, and the insulating structure comprises an insulating cushion block and an insulating sleeve, the insulating cushion block is arranged between the bottom plate and the connecting plate, the insulating sleeve is arranged on the connecting bolt, and the insulating sleeve is arranged between the bottom plate.
The technical scheme 8 of the tubular busbar support fitting is further improved on the basis of any one of the technical schemes 1 to 5: the pipe bus clamp is a pipe bus hoop.
In order to achieve the purpose, the technical scheme 1 of the tubular bus jumper structure provided by the invention is as follows: the utility model provides a tubular busbar jumper wire structure, includes tubular busbar and follows two tubular busbar support gold utensils of tubular busbar length direction symmetry setting on tubular busbar, tubular busbar supports the gold utensil and includes the tubular busbar clamp of being connected with tubular busbar, is connected with the fixing base in the periphery that tubular busbar pressed from both sides, is equipped with cable fixed knot on the fixing base and constructs, cable fixed knot constructs coaxial cable fixed orifices around having one or two, and the axis that is located the tubular busbar support gold utensil of walking the line upper reaches is from inlet wire end to leading-out terminal tilt up gradually, and the axis that is located the tubular busbar support gold utensil of walking the line low reaches supports the cable fixed orifices from inlet wire end to leading-out terminal downward sloping gradually.
The tubular busbar supporting hardware fitting is characterized in that the axis of the cable fixing hole is obliquely arranged, and the axis of the cable fixing hole gradually inclines upwards from the wire inlet side to the wire outlet side, firstly, the axis inclination direction of the cable fixing hole is consistent with the wire routing direction required by the cable, the cable does not need to be bent or has a small bending angle when entering the cable fixing hole, so that the phenomenon of cable damage caused by the inconsistency between the wire routing direction of the cable and the axis direction of the cable fixing hole is avoided, in addition, the axis of the cable fixing hole is obliquely arranged, the cable routing direction can be guided, the cable is enabled to be routed upwards to cross an obstacle, the highest jumper height of the power transmission cable does not depend on the height of the tubular busbar supporting hardware fitting, but mainly depends on the size of the guiding angle of the tubular busbar supporting hardware fitting and the hardness of the power transmission cable, the larger the guiding angle is, and the larger the hardness, the higher the jumper height of the cable. Therefore, the tubular bus supporting fitting does not need to be arranged at too high height, and the jumper of the cable can be realized through the design of the guide angle and the hardness of the transmission cable, so that the size of the tubular bus supporting fitting is reduced, and the cost of the tubular bus supporting fitting is reduced.
The technical scheme 2 of the tubular bus jumper structure is further improved on the basis of the technical scheme 1: the fixing seat of the upstream tubular busbar supporting fitting gradually inclines upwards from the wire inlet side to the wire outlet side so as to enable the axis of the cable fixing hole arranged on the fixing seat to gradually incline upwards, and the fixing seat of the downstream tubular busbar supporting fitting gradually inclines downwards from the wire inlet side to the wire outlet side so as to enable the axis of the cable fixing hole arranged on the fixing seat to gradually incline downwards. The fixing seat is arranged in an inclined mode, so that the inclined arrangement of the axis of the cable fixing hole can be realized, and rainwater can be prevented from being gathered on the fixing seat.
The technical scheme 3 of the tubular bus jumper structure is further improved on the basis of the technical scheme 2: the cable fixing structure comprises a spacing rod, and the cable clamp hole of the spacing rod forms the cable fixing hole.
The technical scheme 4 of the tubular bus jumper structure is further improved on the basis of the technical scheme 3: the conductor spacer has two, and two conductor spacers are around the interval set up and the wire clamp hole one-to-one coaxial correspondence around the two.
The technical scheme 5 of the tubular bus jumper structure is further improved on the basis of the technical scheme 3: the spacer is connected with the fixed seat through a connecting column connected with the lower end of the spacer.
The technical scheme 6 of the tubular bus jumper structure is further improved on the basis of any one of the technical schemes 1 to 5: the fixing seat is provided with an insulating structure used for realizing electrical insulation between the cable fixing structure and the pipe bus clamp. When the transmission cable and the tubular bus have potential differences due to passing through different devices, the insulating structure can realize effective insulation of the transmission cable and the tubular bus, and corona is avoided between the transmission cable and the tubular bus.
The technical scheme 7 of the tubular bus jumper structure is further improved on the basis of the technical scheme 6: the fixing base comprises a bottom plate and a connecting plate, the bottom plate is used for being connected with the pipe bus clamp, the connecting plate is used for being connected with the cable fixing structure, the bottom plate is connected with the connecting plate through a connecting bolt, and the insulating structure comprises an insulating cushion block and an insulating sleeve, the insulating cushion block is arranged between the bottom plate and the connecting plate, the insulating sleeve is arranged on the connecting bolt, and the insulating sleeve is arranged between the bottom plate.
The technical scheme 8 of the tubular bus jumper structure is further improved on the basis of any one of the technical schemes 1 to 5: the pipe bus clamp is a pipe bus hoop.
Drawings
Fig. 1 is a structural diagram of a tubular bus jumper structure according to an embodiment 1 of the present invention;
fig. 2 is a front view of a tubular bus bar supporting fitting in embodiment 1 of the tubular bus bar jumper structure of the present invention;
fig. 3 is a left side view of a tubular bus bar supporting fitting in embodiment 1 of the tubular bus bar jumper structure of the present invention;
fig. 4 is a front view of a four-split spacer, a connecting column and a connecting plate in embodiment 1 of the tubular bus jumper structure of the present invention when connected together;
FIG. 5 is a top view of the structure of FIG. 4;
fig. 6 is a top view of an insulating spacer in embodiment 1 of a tubular bus jumper structure according to the present invention;
fig. 7 is a front view of a pipe bus hoop and a bottom plate in embodiment 1 of the pipe bus jumper structure of the present invention;
FIG. 8 is a left side view of the structure of FIG. 7;
fig. 9 is another usage state diagram of a tubular bus bar support fitting in embodiment 1 of the tubular bus bar jumper structure of the present invention;
in the figure: 1. a tubular busbar; 2. a tubular busbar support fitting; 21. a pipe bus hoop; 22. a base plate; 23. insulating cushion blocks; 24. a connecting plate; 25. connecting columns; 26. a four-split spacer; 261. a wire clamp hole; 27. a connecting bolt; 28. and an insulating sleeve.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The specific embodiment 1 of the tubular bus jumper structure disclosed by the invention comprises a tubular bus 1 and two tubular bus supporting fittings 2 symmetrically arranged on the tubular bus along the length direction of the tubular bus, wherein each tubular bus supporting fitting 2 comprises a tubular bus hoop 21 used for being connected with the tubular bus, a fixed seat is connected to the upper side of the tubular bus hoop 21, two four-split spacers 26 are arranged on the fixed seat at intervals along the length direction of the tubular bus, the two four-split spacers 26 are connected with the fixed seat through connecting columns 25 arranged at the lower ends of the two four-split spacers 26, and the four-split spacers and the connecting columns connected at the lower ends of the four-split spacers form a cable fixing structure. The wire clamp holes 261 on the two four-split spacers 26 are coaxially corresponding one to one, the wire clamp holes 261 coaxially corresponding one to another in the front and back direction form a cable channel for clamping the same cable, and the wire clamp holes form cable fixing holes for fixing the cable, wherein the fixing seat of the tubular busbar supporting fitting positioned on the wiring upstream is gradually inclined upwards from the wire inlet side to the wire outlet side so that the axis of the cable fixing hole arranged on the fixing seat is gradually inclined upwards from the wire inlet side to the wire outlet side, and the fixing seat of the tubular busbar supporting fitting positioned on the wiring downstream is gradually inclined downwards from the wire inlet side to the wire outlet side so that the axis of the cable fixing hole arranged on the fixing seat is gradually inclined downwards from the wire inlet side to the wire outlet.
The fixing seat comprises a bottom plate 22 fixedly connected with the pipe bus hoop and a connecting plate 24 connected with a connecting column 25, an insulating cushion block 23 is arranged between the bottom plate 22 and the connecting plate 24, the bottom plate 22, the insulating cushion block 23 and the connecting plate 24 are connected through connecting bolts 27 penetrating through the bottom plate, the insulating cushion block and the connecting plate, and insulating sleeves 28 are further sleeved on the connecting bolts 27. The insulating cushion block 23 and the insulating sleeve 28 form an insulating structure for realizing electrical insulation between the cable fixing structure and the pipe bus hoop.
In the above structure, the four-split spacer 26 is connected to the connecting column 25 through a connecting hole provided in the spacer itself by a hexagonal bolt, and the connecting column 25 is connected to the connecting plate 24 by an inner hexagonal countersunk head screw.
In the practical use process of the tubular busbar jumper structure, in the two tubular busbar supporting hardware fittings, the axis of the cable fixing hole of the tubular busbar supporting hardware fitting positioned at the upstream of the routing is gradually inclined upwards from the wire inlet end to the wire outlet end, and the axis of the cable fixing hole of the tubular busbar supporting hardware fitting positioned at the downstream of the routing is gradually inclined downwards from the wire inlet end to the wire outlet end.
For a single tubular busbar support fitting, taking the example that the axis of the cable fixing hole gradually inclines upwards from the wire inlet side to the wire outlet side, firstly, the inclination direction of the axis of the cable fixing hole is consistent with the required wiring direction of the cable, the cable does not need to be bent or has a small bending angle when entering the cable fixing hole, thereby avoiding the phenomenon of cable damage caused by the inconsistency of the cable routing direction and the axial direction of the cable fixing hole, in addition, the axial line of the cable fixing hole is obliquely arranged, the cable routing direction can be directed so that the cable is routed up to cross the obstacle, the highest jumper height of the transmission cable is no longer dependent on the height of the tubular busbar support fitting, but mainly depends on the size of the guide angle of the tubular busbar support fitting and the hardness of the power transmission cable, and the larger the guide angle is, the higher the hardness of the power transmission cable is, and the higher the jumper height of the cable is. Therefore, the tubular bus supporting fitting does not need to be arranged at too high height, and the jumper of the cable can be realized through the design of the guide angle and the hardness of the transmission cable, so that the size of the tubular bus supporting fitting is reduced, and the cost of the tubular bus supporting fitting is reduced.
In addition, with the fixing base slope setting, not only can realize the slope setting of cable fixed orifices axis, can prevent moreover that the rainwater from gathering on the fixing base.
The fixing seat is provided with the insulating structure, when the transmission cable and the tubular bus have potential differences due to passing through different devices, the insulating structure can realize effective insulation between the transmission cable and the tubular bus, and corona is avoided.
Of course, the tubular busbar support fitting in the present invention may also be used alone, as shown in fig. 9, that is, jumper of the power transmission cable is implemented by disposing the tubular busbar support fitting on one side of the obstacle. In addition, when not meeting the barrier, also can use tub generating line to support the gold utensil, let the transmission cable carry out the wire jumper to avoid the transmission cable to take place with tub generating line or other position contact's phenomenon gradually when long distance level is walked the line.
The difference between the specific embodiment 2 and the specific embodiment 1 of the tubular bus jumper structure is that the tubular bus hoop can be replaced by a tubular bus clamp, the tubular bus clamp comprises two clamping plates which are positioned on two sides of a tubular bus and are parallel to each other, and the two clamping plates are tensioned by a pull rod and then are fastened with the tubular bus clamp.
The difference between the specific embodiment 3 and the specific embodiment 1 of the tubular bus jumper structure of the invention is that the four-split spacing rods can be provided with one, three, four or more than one according to requirements, cable fixing holes of the same cable on a plurality of four-split spacing rods are coaxially arranged, and the axes are obliquely arranged.
The difference between the specific embodiment 4 of the tubular bus jumper structure and the specific embodiment 1 is that the fixed seat can be not obliquely arranged, but the oblique arrangement of the axis of the cable fixing hole is realized by adjusting the height of the connecting column connected with the lower ends of the two four-split spacing rods and the installation angle of the four-split spacing rods.
The difference between the specific embodiment 5 and the specific embodiment 1 of the tubular bus jumper structure is that the four-split spacer can be replaced by a two-split spacer, a three-split spacer, a five-split spacer and the like, and all the spacers can be adjusted according to actual conditions.
The difference between the specific embodiment 6 of the tubular bus jumper structure of the invention and the specific embodiment 1 is that the cable fixing structure can be arranged not in the form of a spacer, but in the form of a connecting frame, and the connecting frame is provided with a cable fixing hole structure.
The difference between embodiment 7 and embodiment 1 of the present invention is that the fixing base may be configured in other forms, for example, the fixing base includes a bottom plate connected to the hoop of the tubular bus, an insulating block is fixed on the bottom plate, the cable fixing structure is fixed on the insulating block and does not contact with the bottom plate, and at this time, the insulating block becomes an insulating structure between the hoop of the tubular bus and the cable fixing structure.
The difference between the specific embodiment 8 of the tubular bus jumper structure of the present invention and the specific embodiment 1 is that the position of the fixing seat can also be adjusted according to actual needs, for example, the fixing seat is arranged on the left side, the right side or the lower side of the tubular bus hoop, and the number of the fixing seat and the cable fixing structures that are matched with the fixing seat can also be adjusted according to actual needs, for example, two or three cable fixing structures are arranged.
The specific structure of the tubular bus support fitting of the embodiment of the invention is the same as that of the tubular bus support fitting located at the upstream of the routing or the tubular bus support fitting located at the downstream of the routing in the tubular bus jumper structure, and details are not repeated here.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.