A kind of scalable insulating cylinder of segmented
Technical field
The present invention relates to transformer manufacture technology, especially a kind of scalable insulating cylinder of segmented.
Background technology
Transformer is used for the voltage transitions of project of transmitting and converting electricity, under working in high voltage, for ease of wiring and maintenance, usually rising seat is set in the voltage equalizing ball parts week side of its transformer, between voltage equalizing ball and rising seat, insulating barrier is set, because voltage equalizing ball place can produce high voltage, for improving the dielectric strength of the voltage equalizing ball of oil-filled transformer, need to install an insulating cylinder additional between voltage equalizing ball and rising seat wall, and cylinder is highly greater than rising seat, because high tension apparatus needs very high purity requirements, as insulating cylinder cannot be packaging together with rising seat because of height reason, need outer packaging in addition, significantly will promote packing charges, also be difficult to ensure that the cleanliness factor of insulating cylinder can match with rising seat.
Study by scientific research personnel, be in voltage equalizing ball during high-pressure work, its Electric Field Distribution has certain rule, under the prerequisite not changing voltage equalizing ball circular arc place maximum field strength, by increasing voltage equalizing ball arc radius, can reduce to raise seat diameter, reduce transformer manufacturing cost, " transformer high-voltage bushing voltage equalizing ball region analysis of electric field and the structure optimization thereof " one referring to Harbin University of Science and Technology's journal the 17th volume the 6th phase is civilian, but this structure optimization should need corresponding insulating barrel structure to be optimized for cooperation, therefore, how for such voltage equalizing ball, insulating cylinder is optimized in the design raising seat, and make insulating cylinder be convenient to transport (be put in raise in seat and transport simultaneously), it is a research direction.
A kind of telescopic insulating cylinder is disclosed in the patent of publication number 203397871U, it carries out the cooperation of convex-concave wedge type with the stay of Vertical dimension, be socketed two sections of insulating cylinders, make the total length of insulating cylinder variable, but the structure that this design coordinates by convex-concave wedge type limit, two sections of insulating cylinders must be paired with each other, the convertibility of parts is poor, when wherein one section of insulating cylinder damages, be difficult to find removable parts, and the diameter still approximately equal of the insulating cylinder upper and lower of this structure, not easily with previously described increase voltage equalizing ball arc radius, reduce to raise this kind of Optimum Design of Transformers of seat diameter to coordinate.
Summary of the invention
The present invention proposes a kind of scalable insulating cylinder of segmented, makes insulating cylinder scalable, is convenient to transport, and its structure can with increase voltage equalizing ball arc radius, reduce to raise the Optimum Design of Transformers of seat diameter and match.
The present invention adopts following scheme.
A kind of scalable insulating cylinder of segmented, for the insulation between the voltage equalizing ball of oil-filled transformer sleeve pipe and the wall of rising seat and circumferential metal part, the scalable insulating cylinder of described segmented comprises three insulation barrier parts, the first insulation barrier part is followed successively by from small to large by internal diameter, second insulation barrier part and the 3rd insulation barrier part, each insulation barrier part is straight tube, its structure comprises barrel and cover adapter ring, first, second, the equal level of barrel upper inner of the 3rd insulation barrier part establishes an inner sleeve adapter ring, first, the equal level in barrel lower outer face of the second insulation barrier part establishes an overcoat adapter ring, each insulation barrier part vertical sleeve connects, being socketed snare within 3rd insulation barrier part is placed on the overcoat adapter ring of the second insulation barrier part, being socketed snare within second insulation barrier part is placed on the overcoat adapter ring of the first insulation barrier part, the inner sleeve adapter ring of the first insulation barrier part is fixed on insulated fasteners and raises seat place, the barrel of described insulation barrier part, inner sleeve adapter ring and overcoat adapter ring all shaping with insulating material.
The barrel of described insulation barrier part, to fix with glue between inner sleeve adapter ring and overcoat adapter ring, and the rivet of more than 3 of being uniformly distributed along the circumference is fixing to strengthen, described rivet is shaping with insulating material.
Described rivet is the paper rivet of φ 10, and quantity is 3; The barrel of insulation barrier part, fixing with glue between inner sleeve adapter ring and overcoat adapter ring after, barrier part up and down along equal rounding.
The inner sleeve adapter ring of the first insulation barrier part is established the fixing hole of 6 φ 12, this insulation barrier part adopts the insulation blanket stud of M12 to be fixed on through fixing hole and raises on seat.
The height of described inner sleeve adapter ring and overcoat adapter ring is 40mm, is radially of a size of 6mm, and the wall thickness of each insulation barrier part is 3mm, and each insulation barrier part is all shaping with insulating material electrician paper.
First insulation barrier part overcoat adapter ring internal diameter is than the little 2mm of the second insulation barrier part inner sleeve adapter ring internal diameter, and the second insulation barrier part overcoat adapter ring internal diameter insulate than the 3rd the little 2mm of barrier part inner sleeve adapter ring internal diameter.
The socket of each insulation barrier part is detachable socket.
The present invention adopts segmented insulation barrier part, and socket forms insulating cylinder mutually, makes the length of insulating cylinder scalable, when transporting, stacked for three insulating cylinders, can be sealed in rising seat.Thus both ensure that the cleaning of insulating cylinder, need not pack in addition again, reduce cost of transportation.
The insulation barrier part internal diameter that the present invention uses is different, after being socketed, its internal diameter of shaping insulating cylinder increases in staged from top to bottom, when design of transformer is raised seat diameter optimized transformer by increase voltage equalizing ball arc radius, reduction, micro-this profile that insulate can fully adapt to this meter, be conducive to reinforced insulation intensity, reduce the internal diameter raising seat, reduce transformer cost.
The present invention use insulation barrier part, its barrel, to fix with glue between inner sleeve adapter ring and overcoat adapter ring, and the paper rivet of more than 3 of being uniformly distributed along the circumference is fixing to strengthen, the first insulation barrier part is fixed on insulation blanket stud and raises seat place, and this fully ensure that robustness and the insulation property of finished product insulating cylinder.
In the present invention, the socket of each insulation barrier part is detachable socket, first insulation barrier part overcoat adapter ring internal diameter insulate than second the little 2mm of barrier part inner sleeve adapter ring internal diameter, second insulation barrier part overcoat adapter ring internal diameter insulate than the 3rd the little 2mm of barrier part inner sleeve adapter ring internal diameter, this design makes each insulation barrier part be easy to connect together, and the replaceability of parts is better, fault-tolerant ability during socket is strong, when in the barrier part that insulate produces damage, attendant can directly take the identical insulation barrier part of specification directly to change, and shortens maintenance cycle.
Due in transformer, the installing space raised between seat, voltage equalizing ball is less, be difficult to adopt complicated insulator structure, and the scalable insulating cylinder of the segmented that the present invention uses, height and the diameter of the insulation barrier part of each segmentation can be customized for the concrete condition of rising seat, voltage equalizing ball, again by stacking, pull, the installation fixedly having carried out insulating cylinder, make insulating cylinder can make full use of the installing space raised between seat and voltage equalizing ball, effectively promote dielectric strength.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Accompanying drawing 1 is the cut-away illustration after the scalable insulating cylinder of a kind of segmented of the present invention is installed;
In figure: 1-raises seat, 2-voltage equalizing ball, 3-first insulate barrier part, 4-second insulate barrier part, and 5-the 3rd insulate barrier part, and 6-first insulate the inner sleeve adapter ring of barrier part, 7-second insulate the inner sleeve adapter ring of barrier part, 8-first insulate the overcoat adapter ring of barrier part, and 9-the 3rd insulate the inner sleeve adapter ring of barrier part, and 10-second insulate the overcoat adapter ring of barrier part.
Embodiment
As shown in Figure 1, a kind of scalable insulating cylinder of segmented, for the insulation between the voltage equalizing ball 2 of oil-filled transformer sleeve pipe and the wall of rising seat 1 and circumferential metal part, the scalable insulating cylinder of described segmented comprises three insulation barrier parts, the first insulation barrier part 3 is followed successively by from small to large by internal diameter, second insulation barrier part 4 and the 3rd insulation barrier part 5, each insulation barrier part is straight tube, its structure comprises barrel and cover adapter ring, first, second, the equal level of barrel upper inner of the 3rd insulation barrier part establishes an inner sleeve adapter ring, first, the equal level in barrel lower outer face of the second insulation barrier part establishes an overcoat adapter ring, each insulation barrier part vertical sleeve connects, overlapping adapter ring 9 within 3rd insulation barrier part 5 is placed on the overcoat adapter ring 10 of the second insulation barrier part 4, overlapping adapter ring 7 within second insulation barrier part 4 is placed on the overcoat adapter ring 8 of the first insulation barrier part 3, the inner sleeve adapter ring 6 of the first insulation barrier part 3 is fixed on insulated fasteners and raises seat 1 place, the barrel of described insulation barrier part, inner sleeve adapter ring and overcoat adapter ring all shaping with insulating material.
The barrel of described insulation barrier part, to fix with glue between inner sleeve adapter ring and overcoat adapter ring, and the rivet of more than 3 of being uniformly distributed along the circumference is fixing to strengthen, described rivet is shaping with insulating material.
Described rivet is the paper rivet of φ 10, and quantity is 3; The barrel of insulation barrier part, fixing with glue between inner sleeve adapter ring and overcoat adapter ring after, barrier part up and down along equal rounding.
The inner sleeve adapter ring 6 of the first insulation barrier part 3 is established the fixing hole of 6 φ 12, this insulation barrier part 3 adopts the insulation blanket stud of M12 to be fixed on through fixing hole and raises on seat 1.
The height of described inner sleeve adapter ring 6,7,9 and overcoat adapter ring 8,10 is 40mm, is radially of a size of 6mm, and the wall thickness of each insulation barrier part 3,4,5 is 3mm, and each insulation barrier part 3,4,5 is all shaping with insulating material electrician paper.
First insulation barrier part 3 overcoat adapter ring 8 internal diameter is than the little 2mm of the second insulation barrier part 4 inner sleeve adapter ring 7 internal diameter, and the second insulation barrier part 4 overcoat adapter ring 10 internal diameter insulate than the 3rd the little 2mm of barrier part 5 inner sleeve adapter ring 9 internal diameter.
The socket of each insulation barrier part 3,4,5 is detachable socket.
Embodiment:
Installation personnel is placed on the 3rd insulation barrier part 5, second insulation barrier part 4 and the first insulation barrier part 3 successively and raises seat 2 weeks sides, first insulation barrier part 3 insulation blanket stud is fixed on rising seat 1, rising seat 1 is vertically placed, pull the second insulation barrier part 4 and the 3rd insulation barrier part 5 to range, the barrier part that now respectively insulate is socketed mutually through cover adapter ring, voltage equalizing ball 2 is covered, completes installation.