CN209447659U - Iron core and transformer - Google Patents

Abstract

The utility model discloses iron core and transformers, are related to technical field of transformer equipment.Including core body made of being stacked as several groups silicon steel sheet, wherein every group of silicon steel sheet includes upper yoke monomer, lower yoke monomer, side column monomer and center pillar monomer；Several sliding slots and several draw runners with sliding slot cooperation are equipped between the silicon steel sheet of adjacent two；The upper yoke monomer and the lower yoke single level setting；The both ends of the upper yoke monomer and the both ends of the lower yoke monomer are respectively arranged with the side column monomer and the side column monomer is perpendicular with the upper yoke monomer and the lower yoke monomer respectively；The following middle position of the upper yoke monomer is provided with right angle incision, the top middle position of the lower yoke monomer is provided with right angle incision, and the width of the right angle incision is equal to the width of the center pillar monomer at the same level and its depth is equal to the half of the center pillar hull beam at the same level；The iron core can reduce loss.

Description

Iron core and transformer

Technical field

The utility model relates to technical field of transformer equipment, more particularly, to iron core and transformer.

Background technique

Transformer is worked according to electromagnetic induction principle, and magnetic energy is the medium of electric energy conversion, and transformer core is The magnetic circuit part of transformer, the main function of transformer core are magnetic conductions, are made of the very high cold-reduced silicon sheet of magnetic conductivity.Become Depressor iron core can generate no-load loss in practical process, and the quadergy of absorption system forms no-load current.

Currently, " D " type yoke is commonly to drop a kind of low-loss mode in the manufacture of transformer core." D " type yoke Yoke piece width is greater than middle column sheet width.In the yoke piece of processing " D " type yoke, right angle incision depth is the half of yoke piece width, Width is equal to yoke piece width, greater than middle column sheet width at the same level；After the good transformer core of closed assembly, yoke piece and middle column sheet stitching position It is jagged, it causes iron core stitching position leakage field to increase, increases core loss.

Utility model content

The purpose of this utility model is to provide iron core and transformer, which can reduce loss.

To achieve the above object, the utility model the following technical schemes are provided:

One side according to the present utility model, provides iron core, including as several groups silicon steel sheet it is stacked made of core body, Wherein, every group of silicon steel sheet includes upper yoke monomer, lower yoke monomer, side column monomer and center pillar monomer；

Several sliding slots and several draw runners with sliding slot cooperation are equipped between the silicon steel sheet of adjacent two；

The upper yoke monomer and the lower yoke single level setting；The both ends of the upper yoke monomer and the lower yoke monomer Both ends are respectively arranged with the side column monomer and the side column monomer mutually hangs down with the upper yoke monomer and the lower yoke monomer respectively Directly；

The following middle position of the upper yoke monomer is provided with right angle incision, and the top interposition of the lower yoke monomer installs It is equipped with right angle incision, the width of the right angle incision is equal to the width of the center pillar monomer at the same level and its depth is equal to institute at the same level State the half of center pillar hull beam.

Further, the equal length of the upper yoke monomer and the lower yoke monomer, the upper yoke monomer, the lower yoke list The shape of body and the side column monomer is isosceles trapezoid and base angle is 45 °.

Further, each face of the silicon steel sheet is equipped with the sliding slot or the draw runner.

Further, each face of the silicon steel sheet is equipped with the sliding slot and the draw runner.

Further, oil guide groove is offered on the upper yoke monomer.

Further, the oil guide groove is provided with the middle part of the upper yoke monomer.

Further, the width of the oil guide groove is 10-30mm.

Further, it is equipped with the gas channel supporting bar placed vertically by several among the iron core main body main separates and formed Air flue；

The gas channel supporting bar is set on the silicon steel sheet.

Further, the gas channel supporting bar includes the small stay that several segments are placed vertically；

Every section of small stay includes at least one layer of non-conventional glass fibre pipe.

Another aspect according to the present utility model, provides transformer, the iron core provided including above-mentioned technical proposal.

Iron core according to the present utility model, including as several groups silicon steel sheet it is stacked made of core body, wherein every group of silicon Steel disc includes upper yoke monomer, lower yoke monomer, side column monomer and center pillar monomer；Several cunnings are equipped between the silicon steel sheet of adjacent two Slot and several draw runners with sliding slot cooperation；The upper yoke monomer and the lower yoke single level setting；The upper yoke list The both ends of body and the both ends of the lower yoke monomer be respectively arranged with the side column monomer and the side column monomer respectively with it is described on Yoke monomer and the lower yoke monomer are perpendicular；The following middle position of the upper yoke monomer is provided with right angle incision, the lower yoke The top middle position of monomer is provided with right angle incision, and the width of the right angle incision is equal to the width of the center pillar monomer at the same level Degree and its depth are equal to the half of the center pillar hull beam at the same level；For the iron core, using the change of " D " type yoke The middle position of depressor iron core, upper yoke monomer and lower yoke monomer is respectively arranged with right angle incision, and the width of the right angle incision is equal to The width of center pillar monomer at the same level, and depth is equal to the half of center pillar hull beam at the same level, so that yoke piece and middle column sheet are spelled It connects that position is full, non-notch, iron core leakage field is reduced, to reduce core loss.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the main view of the structural schematic diagram of iron core provided by the embodiment of the utility model；

Fig. 2 is the left view of the structural schematic diagram of iron core provided by the embodiment of the utility model；

Fig. 3 is the main view of the structural schematic diagram of iron core provided by the embodiment of the utility model；

Fig. 4 is the A-A section view enlarged structure schematic diagram in Fig. 3；

Fig. 5 is the relationship in iron core provided by the embodiment of the utility model between the iron loss and flux density of different silicon steel sheets Figure.

Icon: 10- core body；101- upper yoke monomer；Yoke monomer under 102-；103- side column monomer；104- center pillar list Body；20- sliding slot；30- draw runner；40- right angle incision；50- air flue；60- gas channel supporting bar；The small stay of 601-.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Fig. 1 is the main view of the structural schematic diagram of iron core provided by the embodiment of the utility model；Fig. 2 is that the utility model is real The left view of the structural schematic diagram of the iron core of example offer is provided；Fig. 3 is the structural representation of iron core provided by the embodiment of the utility model The main view of figure；Fig. 4 is the A-A section view enlarged structure schematic diagram in Fig. 3.

Iron core optional factor according to the present utility model is more.Claim according to the present utility model can be combined into more Kind embodiment, therefore the technical solution that claim combinations according to the present utility model go out is in the protection model of the utility model Within enclosing.The utility model top base frame construction is further described through below in conjunction with specific embodiments.

Embodiment 1

One aspect according to the present utility model provides iron core, and as shown in Figure 1 and Figure 2, Fig. 1 is that the utility model is real The main view of the structural schematic diagram of the iron core of example offer is provided；Fig. 2 is the structural representation of iron core provided by the embodiment of the utility model The left view of figure；Including core body 10 made of being stacked as several groups silicon steel sheet, wherein every group of silicon steel sheet includes upper yoke monomer 101, lower yoke monomer 102, side column monomer 103 and center pillar monomer 104；

Several sliding slots 20 and several draw runners 30 cooperated with sliding slot 20 are equipped between two adjacent silicon steel sheets；

Upper yoke monomer 101 and lower yoke monomer 102 are horizontally disposed；The both ends at the both ends of upper yoke monomer 101 and lower yoke monomer 102 It is respectively arranged with side column monomer 103 and side column monomer 103 is perpendicular with upper yoke monomer 101 and lower yoke monomer 102 respectively；

The following middle position of upper yoke monomer 101 is provided with right angle incision 40, and the top interposition of lower yoke monomer 102 installs It is equipped with right angle incision 40, the width of right angle incision 40 is equal to the width of center pillar monomer 104 at the same level and its depth is equal in peer The half of 104 width of column monomer.

Iron core according to the present utility model, for the iron core, using the transformer core of " D " type yoke, upper yoke monomer 101 and the middle position of lower yoke monomer 102 be respectively arranged with right angle incision 40, the width of the right angle incision 40 is equal to center pillar at the same level The width of monomer 104, and depth is equal to the half of 104 width of center pillar monomer at the same level, so that yoke piece and middle column sheet splicing Position is full, non-notch, iron core leakage field is reduced, to reduce core loss；

Wherein, the wedge angle that 104 both ends of center pillar monomer are 90 °, and the right angle with upper yoke monomer 101 and lower yoke monomer 102 40 phase of notch is complementary；The iron core is made using amorphous alloy strips；

Upper yoke monomer 101 is jointly stacked to constitute upper yoke, and lower yoke monomer 102 is jointly stacked to constitute lower yoke, and side column monomer 103 is total Side column is constituted with stacked, center pillar monomer 104 is jointly stacked to constitute center pillar；

The equal length of upper yoke monomer 101 and lower yoke monomer 102, upper yoke monomer 101, lower yoke monomer 102 and side column monomer 103 shape is isosceles trapezoid and base angle is 45 °.

According to a kind of embodiment of the utility model iron core, as shown in Fig. 2, Fig. 2 provides for the utility model embodiment Iron core structural schematic diagram left view；Each face of silicon steel sheet is equipped with sliding slot 20 or draw runner 30.

According to the utility model iron core, according to this practical magnetic iron core, cut on the iron core of the transformer core of traditional type The upper surface and lower end surface in face are forge piece of step type structure design, and the upper surface of lower section and lower end surface are that forge piece of step type structure is set The centre distance of meter, upper section and lower section is center pillar height, and this core structure makes the upper section and lower section of iron core Centre distance it is larger so that the silicon steel sheet dosage of integrated iron core is larger, high production cost；

And several sliding slots 20 and draw runner 30 are equipped in the iron core, between adjacent two silicon steel sheet, sliding slot 20 and draw runner 30 It cooperates, so that the assembling of total is more convenient, also, silicon steel sheet is equipped with after sliding slot 20 and draw runner 30, energy Enough so that the dosage of silicon steel sheet is few, silicon steel material cost can be effectively significantly reduced.

The mode for being equipped with sliding slot 20 and draw runner 30 for the silicon steel sheet can are as follows: each face of silicon steel sheet is equipped with sliding slot 20 or each face of draw runner 30 or silicon steel sheet be equipped with sliding slot 20 and draw runner 30；

Wherein it is preferred to each face of silicon steel sheet is equipped with sliding slot 20 or draw runner 30, it can be further such that two neighboring Connection between silicon steel sheet is easier；

Preferably, the sliding slot 20 on each face of silicon steel sheet or draw runner 30 are parallel to each other, and facilitate movement when connection, into One step to move smooth；

It should be noted that for the silicon steel sheet in iron core, silicon steel sheet be using conventional silicon-steel finished sheet material as raw material, Precision cold-rolled is carried out after surface treated makes its performance reach necessary requirement to thickness 0.05-0.20mm, then by annealing, It finally applies insulating layer and is sintered, become the silicon steel sheet in the iron core；

Above-mentioned silicon steel sheet includes: three kinds of orientation silicon steel and the super iron core of orientation silicon steel, high silicon, wherein No yield point strip in razor-thin Specific thickness has 0.20,0.15,0.10,0.05mm etc.；The orientation specific thickness of strip in razor-thin has 0.20,0.18,0.15,0.10, 0.08,0.05,0.04,0.03mm etc.；The specific thickness of the high super iron core of silicon is 0.20,0.10mm.

As shown in figure 5, B represent be the utility model silicon steel sheet, what C was represented is the prior art with a thickness of 0.2mm Silicon steel sheet, what D was represented is the silicon steel sheet of the prior art with a thickness of 0.35mm, and what E was represented is with a thickness of the existing of 0.5mm The silicon steel sheet of technology；

As shown in Figure 5, in the case where identical magnetic density, the iron loss of the silicon steel sheet of the utility model is smaller.

According to a kind of embodiment of the utility model iron core, oil guide groove is offered on upper yoke monomer 101.

According to this practical magnetic iron core, in current iron core, after oil stream penetrates into iron core by lower yoke monomer 102 It can not be flowed out from other positions, i.e., after oil stream enters core interior, that is, become region of bypassed oil, core interior cannot form clear and coherent oil Road causes iron core heat dissipation difficult；

In the present embodiment, oil guide groove is offered on upper yoke monomer 101, and oil guide groove realization is offered on upper yoke monomer 101 As soon as referring to that there are fixed gaps not to have sealing epoxy glue on upper yoke monomer 101, formed without the gap section of sealing epoxy glue Oil guide groove；

Wherein, oil guide groove is located at the intermediate position of upper yoke monomer 101, and oil guide groove can make to penetrate into iron by lower yoke monomer 102 The oil stream of core can smoothly be flowed out by oil guide groove, to guarantee that oil circuit is unimpeded, be conducive to the heat dissipation of iron core.

Preferably, oil guide groove is provided with the middle part of upper yoke monomer 101.

Preferably, the width of oil guide groove is 10-30mm.

According to a kind of embodiment of the utility model iron core, as shown in Figure 3 and 4, Fig. 3 is the utility model implementation The main view of the structural schematic diagram for the iron core that example provides；Fig. 4 is the A-A section view enlarged structure schematic diagram in Fig. 3.Iron core main body It is equipped among main and separates the air flue 50 formed by several gas channel supporting bars placed vertically 60；

Gas channel supporting bar 60 is set on silicon steel sheet.

Iron core according to the present utility model, for current transformer, transformer capacity increases, required iron core dosage It can then increase therewith, temperature rise also significantly increases therewith, therefore iron core temperature rise is effectively reduced needs to solve as high-power transformer One of key problem in technology；Traditional transformer core does not have an air flue 50, and when transformer station high-voltage side bus, generated heat can only be by outer Surface distributes, and heat dissipation effect is poor, causes iron core hot-spot, affects normal operation and service life convenient for device, so that The use cost of transformer increases；

In the present embodiment, in the core between setting by several gas channel supporting bars placed vertically 60 air flue 50, improve Effective heat dissipation area of iron core, strengthens heat dissipation effect, to reduce iron core temperature rise, enhances the overexcitation fortune of transformer Row ability extends the service life of transformer；

Wherein, gas channel supporting bar 60 is set to there are many modes on silicon steel sheet, for example, gas channel supporting bar 60 is existed by gluing knot On the silicon steel sheet of iron core, the glue of bonding gas channel supporting bar 60 and silicon steel sheet is heatproof epoxy glue.

According to a kind of embodiment of the utility model iron core, as shown in Figure 3 and 4, Fig. 3 is the utility model implementation The main view of the structural schematic diagram for the iron core that example provides；Fig. 4 is the A-A section view enlarged structure schematic diagram in Fig. 3.

Gas channel supporting bar 60 includes the small stay 601 that several segments are placed vertically；

Every section small stay 601 includes at least one layer of non-conventional glass fibre pipe.

Iron core according to the present utility model, if gas channel supporting bar 60 is formed using by small vertical place of stay 601 of dry end, every section Small stay 601 is made of at least one layer of non-conventional glass fibre pipe, and gas channel supporting bar 60 uses non-conventional glass fibrous material, is had and is not led Magnetic, intensity height, high temperature resistant, corrosion resistant feature；In addition, it will not generate stray loss as nonmetallic un-conducted magnetic material, reach To energy-saving effect；

Wherein, size, quantity and the position of small stay 601 can be true according to the actual size of iron core in gas channel supporting bar 60 It is fixed；

The heatproof ring of gas channel supporting bar 60 for using small stay 601 made of non-conventional glass fibrous material to form several segments Oxygen gluing knot is on the silicon steel sheet of iron core, to separate main iron core to form air flue 50, the heat of core interior passes through air flue 50 distribute outward, considerably increase effective heat dissipation area of iron core, strengthen the heat dissipation effect of iron core, to effectively reduce iron The temperature rise of core enhances the overexcited operation ability of transformer, extends the service life of transformer.

Embodiment 2

In the embodiment that above-described embodiment is for iron core, the iron core of the utility model may be used in transformer, and use is non- Peritectic alloy band makes the amorphous distribution transformer of iron core, and no-load loss is only 75% or so of common silicon steel transformer, tool There is good energy-saving effect, while also there is huge environmental benefit using amorphous distribution transformer made of amorphous iron core, it is few Carbon dioxide and sulfur dioxide are discharged to atmosphere, nuke rubbish is reduced, still, using the transformer of existing iron core, because of iron Core has that region of bypassed oil and heat dissipation are bad in its structure, and iron core temperature is excessively high when be easy to causeing transformer station high-voltage side bus, leads The problems such as causing Transformer Insulation Aging or transformer oepration at full load cannot be made, it is very big to the safe operation presence of amorphous transformer Hidden danger.

Using the transformer of the utility model embodiment iron core, because being provided with oil guide groove, so that passing through lower yoke monomer 102 The oil stream for penetrating into iron core can smoothly be flowed out by oil guide groove, guaranteed that oil circuit is smooth, be conducive to the heat dissipation of iron core, to solve Traditional transformer insulation ag(e)ing and the problem of be unable to oepration at full load, effectively increases the safety coefficient of transformer, extends change The service life of depressor, while improving the economic value of transformer.

Specifically, in one embodiment of the utility model, transformer uses the iron core with Oil Guide slot structure, on iron core The oil guide groove of 15mm wide is provided at 101 middle of yoke monomer, iron core ectonexine is taken with the 0.3 good cold pressing of magnetic property It is wrapped up to silicon steel sheet, using transformer made of this structure iron core, elevated temperature test is carried out to it, test result is as follows, transformer Oil overhold layer temperature rise is 47.8 DEG C, and is used made of the iron core without Oil Guide slot structure with money transformer temperature rise test result are as follows: Transformer oil top layer temperature rise is 53 DEG C.

Through test result as can be seen that using the transformer with oil guide groove iron core under the premise of guaranteeing that cost is constant, Its temperature rise ratio uses the transformer temperature rise without oil guide groove iron core to want low 5.2 DEG C with money.This runs the long-term safety of transformer Reliable guarantee is provided, therefore is asked using the region of bypassed oil that the amorphous transformer of the iron core of the present embodiment can effectively solve core interior Topic guarantees that oil stream is smooth, and structure is more reasonable, to effectively extend the service life of transformer.

Specifically, in one embodiment of the utility model, transformer uses the iron core with Oil Guide slot structure, on iron core The oil guide groove of 30mm wide is provided at 101 middle of yoke monomer, iron core ectonexine is taken with the 0.3 good cold pressing of magnetic property It is wrapped up to silicon steel sheet, using transformer made of this structure iron core, elevated temperature test is carried out to it, test result is as follows, transformer Oil overhold layer temperature rise is 48.2 DEG C, and is used made of the iron core without Oil Guide slot structure with money transformer temperature rise test result are as follows: Transformer oil top layer temperature rise is 54.5 DEG C.

Through test result as can be seen that using the transformer with oil guide groove iron core under the premise of guaranteeing that cost is constant, Its temperature rise ratio uses the transformer temperature rise without oil guide groove iron core to want low 6.3 DEG C with money.This runs the long-term safety of transformer Reliable guarantee is provided, therefore is asked using the region of bypassed oil that the amorphous transformer of the iron core of the present embodiment can effectively solve core interior Topic guarantees that oil stream is smooth, and structure is more reasonable, to effectively extend the service life of transformer.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although utility model is described in detail referring to foregoing embodiments, those skilled in the art should be managed Solution: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of skills Art feature is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution the utility model The range of each embodiment technical solution.

Claims (10)

1. iron core, which is characterized in that including core body made of being stacked as several groups silicon steel sheet, wherein every group of silicon steel sheet packet Include upper yoke monomer, lower yoke monomer, side column monomer and center pillar monomer；

Several sliding slots and several draw runners with sliding slot cooperation are equipped between the silicon steel sheet of adjacent two；

The upper yoke monomer and the lower yoke single level setting；The both ends at the both ends of the upper yoke monomer and the lower yoke monomer It is respectively arranged with the side column monomer and the side column monomer is perpendicular with the upper yoke monomer and the lower yoke monomer respectively；

The following middle position of the upper yoke monomer is provided with right angle incision, and the top middle position of the lower yoke monomer is provided with Right angle incision, the width of the right angle incision is equal to the width of the center pillar monomer at the same level and its depth be equal to it is at the same level it is described in The half of column hull beam.

2. iron core according to claim 1, which is characterized in that the length phase of the upper yoke monomer and the lower yoke monomer Deng the shape of the upper yoke monomer, the lower yoke monomer and the side column monomer is isosceles trapezoid and base angle is 45 °.

3. iron core according to claim 1, which is characterized in that each face of the silicon steel sheet is equipped with the sliding slot or institute State draw runner.

4. iron core according to claim 1, which is characterized in that each face of the silicon steel sheet is equipped with the sliding slot and institute State draw runner.

5. iron core according to claim 1, which is characterized in that offer oil guide groove on the upper yoke monomer.

6. iron core according to claim 5, which is characterized in that the oil guide groove is provided with the centre of the upper yoke monomer Portion.

7. iron core according to claim 5, which is characterized in that the width of the oil guide groove is 10-30mm.

8. iron core according to claim 1, which is characterized in that it is vertical by several to be equipped among the core body main The gas channel supporting bar of placement separates the air flue to be formed；

The gas channel supporting bar is set on the silicon steel sheet.

9. iron core according to claim 8, which is characterized in that the gas channel supporting bar includes the small support that several segments are placed vertically Item；

Every section of small stay includes at least one layer of non-conventional glass fibre pipe.

10. transformer, which is characterized in that including the described in any item iron cores of claim 1-9.