CN104505785A - Ultrahigh-voltage direct current wall bushing center conductive pipe assembly - Google Patents
Ultrahigh-voltage direct current wall bushing center conductive pipe assembly Download PDFInfo
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- CN104505785A CN104505785A CN201410785362.6A CN201410785362A CN104505785A CN 104505785 A CN104505785 A CN 104505785A CN 201410785362 A CN201410785362 A CN 201410785362A CN 104505785 A CN104505785 A CN 104505785A
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- conductive pipe
- direct current
- voltage direct
- contact tube
- wall bushing
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Abstract
The invention provides an ultrahigh-voltage direct current wall bushing center conductive pipe assembly, which comprises an upper end conductive pipe and a lower end conductive pipe, wherein the upper end conductive pipe and the lower end conductive pipe are connected by a splicer, and wire pullers are respectively arranged in the upper end conductive pipe and the lower end conductive pipe, and are respectively connected with the splicer by guy wires. Compared with the prior art, the ultrahigh-voltage direct current wall bushing center conductive pipe assembly has the advantages that the strength of the internal space of the conductive pipe is improved, the inertia torque of the conductive pipe self is increased, the lower flexibility of the conductive pipe assembly is guaranteed, and the problem of influence on the bushing insulation property caused by the change of axis-symmetric electric field distribution in a bushing because of the flexibility of the center conductive pipe is solved; the defects of high difficulty and long time consumption of the assembly of the conductive pipe in the prior art are overcome.
Description
Technical field
The present invention relates to a kind of extra-high voltage direct-current equipment, more particularly, relate to a kind of ultrahigh voltage direct current wall bushing central guiding fulgurite assembly.
Background technology
According to the literature, than high-voltage AC transmission, the advantage of direct current transportation is day by day obvious, and when such as carrying equal-wattage, circuit cost is lower, line loss is little, be suitable for sea lower transmission of electricity, system stability etc., and present stage, as the ultrahigh voltage direct current wall bushing of one of the visual plant in direct current transportation, generally applied in direct current transportation construction, in prior art, after ultrahigh voltage direct current wall bushing is connected with cover plate, plug by sleeve pipe, construct in body of wall or through body of wall.
And one of key problem of the manufacturing technology of existing ultrahigh voltage direct current wall bushing is: the total length of ultrahigh voltage direct current wall bushing reaches 12 meters even longer, central guiding fulgurite is conducted oneself with dignity, and namely amount of deflection problem is very outstanding for cause sagging, if amount of deflection crosses the axis symmetry electric field distribution that senior general changes inside pipe casing, affect the insulation property of sleeve pipe.
Wherein, for solving the problem, general employing major diameter contact tube or contact tube is divided into multiterminal and lined way (as the patent No. in CN103683150A the mode that adopts), but because through-current capability, mounting process, contact tube deadweight and inside pipe casing electric field are to the requirement of center contact tube external diameter, increase contact tube diameter range very limited, the problem of central guiding fulgurite amount of deflection still exists, and uses liner can increase contact tube mounting process difficulty, increase cost, extend the duration.
And for the higher direct-current wall bushing contact tube assembly of electric pressure, the problems referred to above will be more outstanding.Along with the increase of catheter length, when amount of deflection increases to unacceptable situation, the insulating supporting structure of centre pipe must be increased, thus cause the drawbacks such as insulated support surface DC electric field distribution, space-charge accumulation, the increase of manufacturing process difficulty and manufacturing cost raising.
Along with the development of electrical network, the demand that DC transmission engineering is built is also increasing, therefore, how to improve ultrahigh voltage direct current wall bushing, reduces its amount of deflection, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of ultrahigh voltage direct current wall bushing central guiding fulgurite assembly, strengthen contact tube inner space intensity, increase the moment of inertia of conductor itself, thus ensure that contact tube assembly has very low amount of deflection, solve the change that central guiding fulgurite high amount of deflection problem causes the axis symmetry electric field of inside pipe casing to distribute, affect the problem of sleeve pipe insulation property; Overcome in prior art and assemble contact tube difficulty greatly, the problem of length consuming time.
A kind of ultrahigh voltage direct current wall bushing central guiding fulgurite assembly, comprise upper end contact tube and lower conductive pipe, described upper end contact tube is connected with the effective splicer of lower conductive, all be provided with wire grip in described upper end contact tube and lower conductive pipe, two described wire grips are all connected with bracing wire with described splicer.
Preferably, described upper end contact tube and lower conductive inside pipe wall are equipped with the limited location snap ring of described wire grip, two described limited location snap rings all with described upper end contact tube and lower conductive pipe axially vertical.
Preferably, the described limited location snap ring in the contact tube of described upper end is located on the position away from upper end contact tube link, and the described limited location snap ring in described lower conductive pipe is located on the position away from lower conductive pipe link.
Preferably, be drawstring through described limited location snap ring center described in be connected with described splicer.
Preferably, described splicer comprises contiguous block and is separately positioned on the isodiametric screwed pipe at contiguous block two ends.
Preferably, the section of described contiguous block is drum type; Two described screwed pipes are connected with the link of described upper end contact tube and lower conductive pipe respectively.
Preferably, described contiguous block two end faces and the position of described screwed pipe die is provided with draw ring.
Preferably, described draw ring is connected with the described bracing wire of described wire grip.
Preferably, described draw ring is U-loop.
Preferably, the link end face of described upper end contact tube and lower conductive pipe is the annular chamfer towards outside.
As can be seen from above-mentioned technical scheme, the invention provides a kind of ultrahigh voltage direct current wall bushing central guiding fulgurite assembly, by arranging wire grip in upper end contact tube and lower conductive pipe, and by the splicer in the middle of bracing wire connecting stay wire device and upper and lower side contact tube, realize the increase to contact tube inner space intensity, and increase the moment of inertia of contact tube itself, thus ensure that contact tube assembly has very low amount of deflection.
With immediate prior art ratio, beneficial effect of the present invention is:
1, wire grip is connected with bracing wire with splicer, increases contact tube inner space intensity.
2, in contact tube wire grip and splicer be combined the moment of inertia increasing contact tube itself, thus ensure that contact tube assembly has very low amount of deflection, solve the change that central guiding fulgurite amount of deflection problem causes the axis symmetry electric field of inside pipe casing to distribute, affect the problem of sleeve pipe insulation property.
3, by arranging the limited location snap ring of wire grip in central guiding fulgurite inside, ensure that the position of wire grip is fixed, enhance tension effect.
4, the mounting blocks part of splicer is set to drum type, and the remaining space after being connected with upper and lower side contact tube forms welding position, makes welding manner simpler and welding operation of being more convenient for.
5, the design of upper end contact tube and lower conductive pipe simplifies the mounting process of contact tube, saves time cost.
6, be widely used, there is Social benefit and economic benefit significantly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, introduce to the accompanying drawing used required in embodiment or description of the prior art briefly below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of ultrahigh voltage direct current wall bushing central guiding fulgurite assembly of the present invention.
Fig. 2 is the structural representation of the splicer of ultrahigh voltage direct current wall bushing central guiding fulgurite assembly of the present invention.
Wherein, the link of 1-upper end contact tube, 11-upper end contact tube, 2-lower conductive pipe, the link of 21-lower conductive pipe, 3-splicer, 31-connecting screwed tube, 32-draw ring, 33-contiguous block, 4-wire grip, 5-limited location snap ring, 6-bracing wire, 7-cover plate, 8-plug, 9-round platform.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The present embodiment illustrates the present invention there to be the ultrahigh voltage direct current wall bushing central guiding fulgurite assembly of cover plate and the plug being provided with round platform.
As shown in Figure 1, the ultrahigh voltage direct current wall bushing central guiding fulgurite assembly that the embodiment of the present invention provides comprises cover plate 7, upper end contact tube 1, splicer 3, lower conductive pipe 2 and plug 8;
Wherein, in upper end contact tube 1 and lower conductive pipe 2, wire grip 4 is all installed, the inwall of upper end contact tube 1 with lower conductive pipe 2 is equipped with end face and the two axial limited location snap ring 5 that is vertical, wire grip 4; The link 11 of upper end contact tube is connected with the threaded one end of splicer 3, the other end of splicer 3 is threaded with the link 21 of lower conductive pipe, limited location snap ring 5 in upper end contact tube 1 is arranged at the position of the link 11 away from upper end contact tube, and the limited location snap ring 5 in lower conductive pipe 2 is arranged at the position of the link 21 away from lower conductive pipe.
Wire grip 4 bracing wire 6 is connected with splicer 3, and in the present embodiment, wire grip 4 is ring-type, but the wire grip in the present invention is not limited to ring-type, can also be other shapes such as triangle, rectangle.
As shown in Figure 2, described splicer 3 comprises the equal diameter screwed pipe 31 that contiguous block 33 and contiguous block 33 two ends are all arranged, on two end faces of contiguous block 33 and the die place of screwed pipe 31 is equipped with draw ring 32.
Wherein, contiguous block 33 is the centre position drum type outwardly of its outer wall axis; After splicer 3 is connected with upper end contact tube 1 and lower conductive pipe 2, after the link 21 of the outer wall of splicer 3 and the link 11 of upper end contact tube and lower conductive pipe is connected, between the outer wall of contiguous block 33 and the end face of upper end contact tube 1 and lower conductive pipe 2, define the welding position inwardly concaved.
The end face of the link 11 of upper end contact tube and the link 21 of lower conductive pipe is the annular chamfer towards outside, the end face of upper end contact tube 1 and lower conductive pipe 2 and the outer wall of contiguous block 33 and between define the welding position inwardly concaved.Described bracing wire 6 adopts steel wire rope;
Draw ring 32 is U-loop;
Wherein, cover plate 7 upper end round platform 9 electroplating surfaces with tin; The inner surface of plug 8 is silver-plated.
During installation, first the wire grip 4 in upper end contact tube 1 and lower conductive pipe 2 is engaged with snap ring 5, wire grip 4 in upper end contact tube 1 is connected with bracing wire 6 with the draw ring 32 of one end on splicer 3, then weld again after upper end contact tube link 11 being threaded with the connecting screwed tube 31 of splicer 3 one end, then by the wire grip 4 in upper end contact tube 1, bracing wire 6 is strained;
Again the wire grip 4 in lower conductive pipe 2 is connected with another bracing wire 6 with the draw ring 32 of the other end on splicer 3, then weld again after lower conductive pipe link 21 being threaded with the connecting screwed tube 31 of splicer 3 other end, then by the wire grip 4 in lower conductive pipe 2, bracing wire 6 is strained;
Then cover plate 7 and plug 8 be threaded and be welded on the two ends of the combinations thereof of having assembled, completing assembly and install.
Wherein, carry out welding processing after being threaded, solder fillet is between R22 to R32.
Above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field still can modify to the specific embodiment of the present invention or equivalent replacement; and these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, it is all being applied within the claims of the present invention awaited the reply.
Claims (10)
1. a ultrahigh voltage direct current wall bushing central guiding fulgurite assembly, comprise upper end contact tube and lower conductive pipe, it is characterized in that, described upper end contact tube is connected with the effective splicer of lower conductive, all be provided with wire grip in described upper end contact tube and lower conductive pipe, two described wire grips are all connected with bracing wire with described splicer.
2. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 1, it is characterized in that, described upper end contact tube and lower conductive inside pipe wall are equipped with the limited location snap ring of described wire grip, two described limited location snap rings all with described upper end contact tube and lower conductive pipe axially vertical.
3. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 2, it is characterized in that, described limited location snap ring in the contact tube of described upper end is located on the position away from upper end contact tube link, and the described limited location snap ring in described lower conductive pipe is located on the position away from lower conductive pipe link.
4. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 2, is characterized in that, described in be drawstring through described limited location snap ring center and be connected with described splicer.
5. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 1, is characterized in that, described splicer comprises contiguous block and is separately positioned on the isodiametric screwed pipe at contiguous block two ends.
6. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 5, it is characterized in that, the section of described contiguous block is drum type; Two described screwed pipes are connected with the link of described upper end contact tube and lower conductive pipe respectively.
7. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 5, is characterized in that, described contiguous block two end faces and the position of described screwed pipe die is provided with draw ring.
8. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 7, it is characterized in that, described draw ring is connected with the described bracing wire of described wire grip.
9. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 7, it is characterized in that, described draw ring is U-loop.
10. ultrahigh voltage direct current wall bushing central guiding fulgurite assembly as claimed in claim 1, it is characterized in that, the link end face of described upper end contact tube and lower conductive pipe is the annular chamfer towards outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785362.6A CN104505785B (en) | 2014-12-17 | 2014-12-17 | Ultrahigh-voltage direct current wall bushing center conductive pipe assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785362.6A CN104505785B (en) | 2014-12-17 | 2014-12-17 | Ultrahigh-voltage direct current wall bushing center conductive pipe assembly |
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| Publication Number | Publication Date |
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| CN104505785A true CN104505785A (en) | 2015-04-08 |
| CN104505785B CN104505785B (en) | 2017-04-12 |
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| CN201410785362.6A Active CN104505785B (en) | 2014-12-17 | 2014-12-17 | Ultrahigh-voltage direct current wall bushing center conductive pipe assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110661230A (en) * | 2019-07-11 | 2020-01-07 | 平高集团有限公司 | Conductive tube for high-voltage equipment |
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| CN104505785B (en) | 2017-04-12 |
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