CN204012218U - A kind of for combined electrical apparatus main transformer interval phase-sequence changed device - Google Patents

Abstract

The utility model relates to a kind of combined electrical apparatus main transformer spacer techniques field, specifically a kind of for combined electrical apparatus main transformer interval phase-sequence changed device, comprise housing and three-phase conductor, the end of three-phase conductor is symmetry shape and arranges, wherein A phase conductor is the longest conductor of length in three-phase conductor, also comprise supportive conductors device, it is on the nearest housing of A phase conductor vertical range that supportive conductors device is arranged on apart from that the longest root conductor, A phase conductor forms by two sections, between two sections, is connected and is supported in housing by supportive conductors device.The utlity model has simple and reasonable for structurely, be used in the feature using in the situation that adjacent two spacing distances are less.

Description

A kind of for combined electrical apparatus main transformer interval phase-sequence changed device

Technical field

The utility model relates to a kind of combined electrical apparatus main transformer spacer techniques field, specifically a kind of for combined electrical apparatus main transformer interval phase-sequence changed device.

Background technology

Interval is device conventional in combined electrical apparatus, and wherein main transformer interval is the interval that the high and low pressure side of main transformer is connected with bus, is the interval of realizing the conversion of high voltage and low-voltage.In the engineering design of 220kV combined electrical apparatus, the phase sequence of main transformer interval and outgoing line interval is generally reverse, and as when main transformer interval phase sequence, cause right sequence from a left side be C, B, A, cause right sequence from a left side be A, B, C to outgoing line interval phase sequence so.Be generally and meet such sequence and will set up bus air bound, between adjacent two intervals, bus air bound is set, reach the designing requirement of reverse phase sequence to adjust mode that bus inner conductor installs.Bus air bound comprises the housing that insulator and insulator both sides arrange, according to Electrical Appliances Designing requirement, housing in the supporting installation in insulator both sides must reach certain distance, like this, the length of whole bus air bound generally causes 900 millimeters at 800 millimeters, if run in the situation that adjacent two spacing distances are less, bus air bound cannot be realized installation, so just cannot reach to adjust phase sequence to make phase sequence be the effect of reversed arrangement, thereby can not meet the requirement of combined electrical apparatus engineering design.

Summary of the invention

The utility model provides a kind of simple and reasonable for structure in order to overcome above-mentioned defect, is applicable to realize the phase-sequence changed device of main transformer interval and outgoing line interval sorting by reversals in the situation that adjacent two spacing distances are less.

The technical solution adopted in the utility model is: a kind of for combined electrical apparatus main transformer interval phase-sequence changed device, comprise housing and three-phase conductor, housing is arranged between two intervals, be provided with the through hole that can wear for three-phase conductor in the bilateral symmetry of housing, three-phase conductor is respectively C phase conductor, A phase conductor and B phase conductor, wherein A phase conductor is the longest conductor of length in three-phase conductor, C phase conductor is the shortest conductor of length in three-phase conductor, the length of B phase conductor is the mean value of C phase conductor and A phase conductor, three-phase conductor is parallel shape setting, and cross section is isosceles triangle shape and distributes, it is characterized in that: also comprise supportive conductors device, on housing, be that the nearest position of A phase conductor vertical range arranges one and pulls out mouth apart from that the longest root conductor, pulling out mouth stretches out to hull outside, its outer end is provided with cover plate, install on the cover board supportive conductors device one end, the other end extend in housing and is connected with A phase conductor,

C phase conductor in described three-phase conductor and B phase conductor are the conductor of a monolithic construction, C phase conductor is connected with C phase main line and B phase main line in interval, both sides by conductive contact respectively through its two ends, housing two rear flank with B phase conductor, described A phase conductor forms by two sections, be left conductor and right conductor, left conductor is connected with supportive conductors device respectively with right conductor one end, and the other end stretches out respectively housing and is connected with the A phase main line in interval, both sides;

Described supportive conductors device comprises post insulator, shielding slab, Mume flower contact and little supportive conductors, install on the cover board described post insulator one end, the other end stretches in housing, the upper vertical of post insulator connects little supportive conductors, the two ends of little supportive conductors are respectively arranged with Mume flower contact, Mume flower contact is connected with two sections of A phase conductors respectively, is provided with shielding slab in the upper end of post insulator.

The utility model has been cancelled the insulator in traditional structure, two shorter phase conductors are C phase main line and the B phase main line that C phase conductor and B phase conductor are direct connection both sides, longer A phase conductor forms by two and carries out support and connection by supportive conductors device, three-phase conductor is easy to arrange by designing requirement like this, this structure has been guaranteed the anti-phase sequence of three-phase conductor both sides, and save insulator, due to insulator not being set in housing, so just can shorten the requirement to shell length, be reverse arrangement thereby be applicable to realizing in the less situation of adjacent two spacing distances main transformer interval and outgoing line interval phase sequence.

Brief description of the drawings

Fig. 1 is schematic diagram of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B portion enlarged drawing of Fig. 1.

Embodiment

Now by reference to the accompanying drawings the utility model is further described, Fig. 1 is a kind of embodiment of the present utility model, comprise housing 1 and three-phase conductor, housing 1 is arranged between two intervals, be provided with the through hole that can wear for three-phase conductor in the bilateral symmetry of housing 1, three-phase conductor is respectively C phase conductor 4, A phase conductor 2 and B phase conductor 3, for meeting the sorting by reversals of three-phase conductor, common A phase conductor 2 is wherein the longest conductor of length in three-phase conductor, C phase conductor 4 is the shortest conductor of length in three-phase conductor, the length of B phase conductor 3 is the mean value of C phase conductor 4 and A phase conductor 2, three-phase conductor is parallel shape setting, and cross section is isosceles triangle shape and distributes, see Fig. 2, and the end of three-phase conductor is symmetry shape layout.In the utility model, also comprise supportive conductors device 5, on housing 1, apart from that the longest root conductor, be that the nearest position of A phase conductor 2 vertical ranges arranges one and pulls out mouth, pull out mouth and typically refer to the flange body being communicated with housing 1, pulling out mouth stretches out to housing 1 outside, its outer end is provided with cover plate 10, and cover plate 10 mouthful is connected by bolt with pulling out, and can also and pull out at cover plate 10 sealing device is set between mouth.Supportive conductors device 5 one end are arranged on cover plate 10, and the other end extend in housing 1 and is connected with A phase conductor 2.

C phase conductor 4 in described three-phase conductor and B phase conductor 3 are the conductor of a monolithic construction, C phase conductor 4 is connected with C phase main line and B phase main line in interval, both sides by conductive contact respectively through its two ends, 1 liang of rear flank of housing with B phase conductor 3, described A phase conductor 2 forms by two sections, be left conductor and right conductor, left conductor is connected with supportive conductors device 5 respectively with right conductor one end, and the other end stretches out respectively housing 1 and is connected with the A phase main line in interval, both sides;

Described supportive conductors device 5 comprises post insulator 6, shielding slab 7, Mume flower contact 8 and little supportive conductors 9, described post insulator 6 one end are arranged on cover plate 10, the other end stretches in housing 1, the upper vertical of post insulator 6 connects little supportive conductors 9, little supportive conductors 9 is generally columniform aluminium bar or copper bar, the two ends of little supportive conductors 9 are respectively arranged with Mume flower contact 8, Mume flower contact 8 is connected with two sections of A phase conductors 2 respectively, two Mume flower contacts 8 are connected with left conductor and right conductor respectively, be provided with shielding slab 7 in the upper end of post insulator 6, see Fig. 3.Shielding slab 7 is generally aluminium block or the copper billet that profile is arcuation, produces electric arc for anti-position here.

Because the utility model has been cancelled the insulator in traditional structure, and two shorter phase conductors are C phase main line and B phase main line that C phase conductor 4 and B phase conductor 3 are direct connection both sides, longer A phase conductor 2 is two and carries out support and connection by supportive conductors device 5, three-phase conductor is easy to arrange by designing requirement like this, both guaranteed the anti-phase sequence of three-phase conductor both sides, save again insulator, due to insulator not being set in housing 1, so just can shorten the requirement to housing 1 length, conventionally the length the shortest of housing 1 is 400 millimeters of assemblings that just can meet supportive conductors device 5, be reverse arrangement thereby be applicable to realizing in the less situation of adjacent two spacing distances main transformer interval and outgoing line interval phase sequence.

The utlity model has simple and reasonable for structurely, be used in the feature using in the situation that adjacent two spacing distances are less.

Claims (1)

1. one kind for combined electrical apparatus main transformer interval phase-sequence changed device, comprise housing and three-phase conductor, housing is arranged between two intervals, be provided with the through hole that can wear for three-phase conductor in the bilateral symmetry of housing, three-phase conductor is respectively C phase conductor, A phase conductor and B phase conductor, wherein A phase conductor is the longest conductor of length in three-phase conductor, C phase conductor is the shortest conductor of length in three-phase conductor, the length of B phase conductor is the mean value of C phase conductor and A phase conductor, three-phase conductor is parallel shape setting, and cross section is isosceles triangle shape and distributes, the end of three-phase conductor is symmetry shape and arranges, it is characterized in that: also comprise supportive conductors device, on housing, be that the nearest position of A phase conductor vertical range arranges one and pulls out mouth apart from that the longest root conductor, pulling out mouth stretches out to hull outside, its outer end is provided with cover plate, install on the cover board supportive conductors device one end, the other end extend in housing and is connected with A phase conductor,

C phase conductor in described three-phase conductor and B phase conductor are the conductor of a monolithic construction, C phase conductor is connected with C phase main line and B phase main line in interval, both sides by conductive contact respectively through its two ends, housing two rear flank with B phase conductor, described A phase conductor forms by two sections, be left conductor and right conductor, left conductor is connected with supportive conductors device respectively with right conductor one end, and the other end stretches out respectively housing and is connected with the A phase main line in interval, both sides;

Described supportive conductors device comprises post insulator, shielding slab, Mume flower contact and little supportive conductors, install on the cover board described post insulator one end, the other end stretches in housing, the upper vertical of post insulator connects little supportive conductors, the two ends of little supportive conductors are respectively arranged with Mume flower contact, Mume flower contact is connected with two sections of A phase conductors respectively, is provided with shielding slab in the upper end of post insulator.