CN2254231Y - Three-phase three-pillar lap joint type transformer - Google Patents

Abstract

The utility model belongs to transformer manufacture field, which is particularly suitable for the manufacture of a three-phase three-pillar lap joint type non crystal distribution transformer. The utility model is formed by that a high and a low casing tubes are installed on the upper end of a casing of a transformer, etc. and a non crystal lap joint iron core, winding, etc. are installed in the casing. The utility model is characterized in that at least two inner lap joint iron cores are installed in an outer lap joint iron core arranged in an insulating support frame, and three groups of windings are sheathed on the three stems formed by three iron cores. Compared with the prior art of a transformer, the utility model has the advantages of reasonable structure, convenient maintenance, convenient manufacture, low no-load loss, etc.

Description

Three-phase three-column bridging type transformer

The utility model belongs to distribution transformer and makes the field.Be specially adapted to the manufacturing of three-phase three-column bridging type distribution transformer.

The material of producing distribution transformer has two kinds at present, and a kind of is silicon steel, and another kind is an amorphous band.Though the manufacturing of silicon steel distribution transformer is easier to, the no-load loss that its main shortcoming is a distribution transformer is quite serious, and waste of energy is bigger.Along with the continuous development of non-crystalline material technology, the distribution transformer of being produced by non-crystalline material might replace the silicon steel distribution transformer.Its main purpose is because the no-load loss of amorphous distribution transformer is extremely low, only is 1/3～1/5 of silicon steel distribution transformer of the same type, therefore to reducing unnecessary energy consumption highly significant.But the main difficulty that adopts amorphous thin ribbon to make distribution transformer is this band can not can only be wound into iron core towards folded, makes the three-phase distribution transformer again.For example U.S. Intertrust, Inc., GE company and Toshiba Corp have all made many Wound core formula amorphous distribution transformers, though these distribution transformers have good result of use, but weak point is this class distribution transformer makes difficulty, because the high-voltage coil and low-voltage coil winding coiling in advance of this class transformer is good, and can only be on the annular core post with coil by low pressure to high pressure winding from level to level, manufacture difficulty is big, quality should not guarantee, and the maintenance of distribution transformer is just difficult more, and the batch process of distribution transformer is restricted.

The purpose of this utility model is to propose a kind of reasonable in design and manufacturing, easy to maintenance and three-phase three-column bridging type amorphous distribution transformer that equipment no-load loss is low.

The composition of the utility model three-phase three-column bridging type amorphous distribution transformer can be narrated with reference to the accompanying drawings.Accompanying drawing 1 is the part cross-sectional schematic of this bridging type amorphous distribution transformer, accompanying drawing 2 is a distribution transformer amorphous iron core front cut-away view, accompanying drawing 3 is the a-a cross section cut-away view of accompanying drawing 2, and accompanying drawing 4 is the structural representation of inner ring overlap joint iron core, and accompanying drawing 5 is the structural representation of outer ring overlap joint iron core.Accompanying drawing 6 is to prepare the amorphous iron core that the loading and unloading coil windings there is not overlap joint.1 is bushing in the accompanying drawings, and 2 is low-tension bushing, and 3 is shunting switch; 4 is folder, and 5 is three posts overlap joint iron core, and 6 is coil windings; 7 is insulating support; 8 are inner ring overlap joint iron core, and 9 are outer ring overlap joint iron core, and 10 is insulating barrier; 11 are lead-in wire; 12 is protective cradle, and 13 is external protection, and 14 are amorphous ribbon iron core overlap joint section.

The composition of the utility model three-phase three-column bridging type amorphous distribution transformer can be described in detail as follows with reference to the accompanying drawings.The contour structures of this distribution transformer is similar to common three-phase three-column distribution transformer, corresponding bushing 1, low-tension bushing 2 and shunting switch 3, fuel reserve tank promptly are housed in the upper end of transformer case, amorphous iron core and coil windings etc. are housed in transformer case, it is characterized in that being equipped with in the insulating support 7 in this transformer case outer ring overlap joint iron core 9, two or more inner ring overlap joint iron cores 8 are housed in the overlap joint iron core 9 of outer ring.Inner ring wall at each overlap joint iron core has all supportted protective cradle 12, all is surrounded by external protection 13 in each collar wall that overlaps iron core, all is wound with insulating barrier 10 in periphery of each overlap joint iron core.Visual as accompanying drawing 4, accompanying drawing 5, accompanying drawing 4 is the structural representation of inner ring overlap joint iron core 8 part sections, and b-b is the cross section cut-away view of this iron core.Accompanying drawing 5 is the structural representation of outer ring overlap joint iron core 9 part sections, and c-c is the cross section cut-away view of this iron core.All respectively there is one section to be the amorphous thin ribbon overlap joint section 14 of amorphous iron core in the lower end of inner ring overlap joint iron core 8 and outer ring overlap joint iron core 9, with reference to the accompanying drawings shown in 6, the lower end of each overlap joint iron core is openable, after amorphous overlap joint iron core winds three insulating barriers 10, a pair of inner ring overlap joint iron core 8 can be arranged in the overlap joint iron core 9 of outer ring, again ready made three groups of coil windings 6 are set on three iron core column being made up of three iron cores, again three groups of amorphous iron cores are overlapped with body respectively, twine the insulating barrier 10 that iron core overlaps section again after making three groups of amorphous iron cores form the separate closing magnetic loop respectively, then three posts overlap joint iron core 5 is installed in the insulating support 7, by folder 4 insulating support 7 is clamped, and with the height of each coil windings 6, low-voltage lead 11 is fixed on the upper end of insulating support 7, the upper end of lead-in wire 11 is connected in respectively on bushing 1 and the low-tension bushing 2, accompanying drawing 2 is exactly the structural profile signal after this three-phase three-column distribution transformer amorphous overlap joint iron core assembling, and amorphous ribbon iron core overlap joint section 14 should be in the bottom of distribution transformer.Accompanying drawing 3 is a-a cross section cut-away views of accompanying drawing 2, can find out by accompanying drawing 3, the requirement of amorphous overlap joint iron core can be decided the requirement of distribution transformer according to the designer, when the designer makes jumbo distribution transformer, can with two or more sets amorphous overlap joint iron core is to be installed prepare after, again with two pairs or many to inner ring overlap joint iron core 8 and be arranged in the overlap joint iron core 9 of two or more outer rings, and then coil windings 6 is set on three iron core column, the overlap joint of amorphous iron core, assembly program are as hereinbefore.1 can find out with reference to the accompanying drawings, after the main body assembling of three-phase three-column amorphous overlap joint iron core is finished, can assemble by the assembly program of common three-phase distribution transformer.

It is low that the distribution transformer that adopts the utility model three-phase three-column bridging type distribution transformer structure to be produced has no-load loss compared with prior art, only is same level silicon steel distribution transformer no-load loss 1/3～1/5.This transformer is compared with similar amorphous distribution transformer and is had reasonable in design, and iron core and coil windings are easily manufactured and quality is highly reliable, and the assembling of equipment and easy to maintenance is suitable for the distribution transformer industrial production of polytypic in batches.

Claims (3)

1; a kind of three-phase three-column bridging type amorphous distribution transformer; the composition of this transformer is that bushing (1) is housed in the upper end of transformer case; low-tension bushing (2); shunting switch (3) and fuel reserve tank; amorphous iron core and coil windings are housed in transformer case; it is characterized in that being equipped with in the insulating support (7) in this transformer case outer ring overlap joint iron core (9); two or more inner ring overlap joint iron cores (8) are housed in outer ring overlap joint iron core (9); the inner ring wall of each overlap joint iron core has all supportted protective cradle (12); outer ring at each overlap joint iron core all is surrounded by external protection (13); periphery at each overlap joint iron core all is wound with insulating barrier (10), and three groups of coil groups (6) are set on three iron core column being made up of three iron cores.

2,, it is characterized in that the lower end of inner ring overlap joint iron core (8) and outer ring overlap joint iron core (9) all respectively has one section to be the amorphous ribbon overlap joint section (14) of amorphous iron core according to the described transformer of claim 1.

3,, it is characterized in that the overlap joint section (14) of each overlap joint amorphous iron core is openable according to claim 1,2 described transformers.

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