CN205211575U - Phase separating pressure regulating formula electric furnace transformer - Google Patents
Phase separating pressure regulating formula electric furnace transformer Download PDFInfo
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- CN205211575U CN205211575U CN201520847885.9U CN201520847885U CN205211575U CN 205211575 U CN205211575 U CN 205211575U CN 201520847885 U CN201520847885 U CN 201520847885U CN 205211575 U CN205211575 U CN 205211575U
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Abstract
The utility model discloses a phase separating pressure regulating formula electric furnace transformer, including the box, set up in three -phase winding and 3 single -phase voltage regulating switch in the box, just all be provided with the lead -out wire on last each phase winding of three -phase winding, each the lead -out wire is selfcorresponding with each respectively single -phase voltage regulating switch circuit connection. The utility model discloses a phase separating pressure regulating formula electric furnace transformer sets up three -phase winding and 3 single -phase voltage regulating switch in the box to set up the lead -out wire on mutually in each of three -phase winding, the rethread makes each phase voltage of electric stove all can adjust through a single single -phase voltage regulating switch mode that the single -phase voltage regulating switch of each lead -out wire and one of them is connected, has realized the phase separating pressure regulating of electric stove pressure. Compared with the prior art, the utility model discloses each looks power that can make the electric stove becomes more and more balanced gradually, has weakened the energy transduction's that the zero displacement results in harmful effects by a wide margin, satisfies the actual production demand of large -scale electric stove.
Description
Technical field
The utility model relates to electrician and transformer technology field, particularly a kind of Split-phase voltage regulating type circuit transformer.
Background technology
Along with Chinese machinery and electrotechniical development, increasing electromechanical equipment is used widely.
For furnace transformer, at present, furnace transformer of the prior art is three-phase transformer, and the single threephase switch of general employing carries out pressure regulation.In technical research, generally electric furnace is regarded the asymmetrical load of electric parameter, therefore the impedance of its every phase is made up of transformer impedance, short net impedance, electrode impedance and molten bath impedance respectively.Its short-and-medium net impedance determines the balanced major parameter of each phase load, but to make every instrument transformer equilibrium then very complicated, difficulty is comparatively large, almost cannot accomplish in Large Electric Furnace.Further, when the parameters of short net is unequal, because electric furnace exists offset phenomena to system zero point, short net can be made to occur energy trasfer, make each phase motor burning degree uneven.The difference of each phase power causes the production capacity of each phase different, the operating efficiency of electric furnace is reduced, even causes electric furnace normally to run.
But furnace transformer of the prior art adopts single threephase switch to carry out pressure regulation, in pressure regulation process, three-phase must carry out the pressure adjustment of same degree simultaneously, and this can not meet the actual production demand of electric furnace, and the difference power of each phase of electric furnace is apart from still existing.
Therefore, how to design a kind of furnace transformer, can the power of each phase of balanced electric furnace, meeting the actual production demand of electric furnace, is those skilled in the art's technical problems urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of Split-phase voltage regulating type circuit transformer, can carry out independent pressure regulation mutually to each on electric furnace, balanced each phase power, meets the actual production pressure regulation demand of electric furnace.
For solving the problems of the technologies described above, the utility model provides a kind of Split-phase voltage regulating type furnace transformer, comprise casing, be arranged at three-phase windings in described casing and 3 single-phase voltage regulating switches, and each phase winding on described three-phase windings is provided with lead-out wire, each described lead-out wire is connected with each self-corresponding described single-phase voltage regulating switching circuit respectively.
Preferably, described three-phase windings comprises iron core, and described iron core is the three-phase five-limb structure for providing loop to zero sequence fluxes.
Preferably, each described single-phase voltage regulating switch is single-phase on-load voltage regulating switch.
Preferably, each described single-phase voltage regulating switch in described casing linearly shape be uniformly distributed, and each described single-phase voltage regulating switch all with wherein a described lead-out wire is just right.
Split-phase voltage regulating type furnace transformer provided by the utility model, mainly comprises casing, is arranged on three-phase windings in casing and 3 single-phase voltage regulating switches.Wherein, each phase winding on each three-phase windings is provided with lead-out wire, and each bar lead-out wire is connected with each self-corresponding single-phase voltage regulating switching circuit respectively.Split-phase voltage regulating type furnace transformer provided by the utility model, three-phase windings and 3 single-phase voltage regulating switches are set in casing, and in each phase of three-phase windings, set up lead-out wire simultaneously, mode again by each bar lead-out wire is connected with one of them single-phase voltage regulating switch, each phase voltage of electric furnace all can be regulated by single single-phase voltage regulating switch, be independent of each other between two between three-phase, achieve the phase-splitting pressure regulation of electric furnace pressure.Compared to prior art, the utility model is by 3 single-phase voltage regulating switches, respectively mutually pressure regulation is carried out to each of three-phase windings, and then each phase power of electric furnace can be made to be tending towards balanced gradually, significantly weaken the harmful effect of the energy trasfer that null drift causes, meet the actual production demand of Large Electric Furnace.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the overall structure schematic diagram of a kind of embodiment provided by the utility model.
Wherein, in Fig. 1:
Casing-1, three-phase windings-2, unshakable in one's determination-201, lead-out wire-202, single-phase voltage regulating switch-3.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, Fig. 1 is the overall structure schematic diagram of a kind of embodiment provided by the utility model.
In a kind of embodiment provided by the utility model, Split-phase voltage regulating type furnace transformer mainly comprises casing 1 and the three-phase windings 2 be arranged in casing 1 and 3 single-phase voltage regulating switches 3.
Wherein, casing 1 is oil tank of transformer, is mainly used in installing transformation parts and fluid etc., generally can be rectangular etc.The utility model is provided with three-phase windings 2 and 3 single-phase voltage regulating switches 3 in the inside of casing 1, three-phase windings 2 has three phase pressures and exports simultaneously, and its iron core 201 has three winding arounds.Single-phase voltage regulating switch 3, as the term suggests, be a kind of adjuster being exclusively used in a certain phase voltage in regulating circuit.Herein preferably, single-phase voltage regulating switch 3 can be generally single-phase on-load voltage regulating switch.Certainly, single-phase voltage regulating switch 3 can also be the tap changer of all the other general types.
The present embodiment each winding around on three-phase windings 2 is provided with lead-out wire 202, and owing to three-phase windings 2 having three winding arounds, therefore the quantity of lead-out wire 202 is 3.And the quantity of single-phase voltage regulating switch 3 is also 3, therefore, each lead-out wire 202 in the present embodiment is connected with the binding post of one of them single-phase voltage regulating switch 3 respectively, so, each phase on three-phase windings 2 is all connected with a single-phase voltage regulating switch 3.And by regulating the output voltage of the knob on single-phase voltage regulating switch 3 and each phase on adjustable three-phase windings 2.Because 3 single-phase voltage regulating switches 3 are mutually independently, when operating personnel carry out voltage-regulation to it, voltage-regulation amount in its each phase also all independent, be independent of each other, therefore, operating personnel according to the required voltage of electric furnace each phase when actual production, can operate each single-phase voltage regulating switch 3, thus regulate the output voltage of each phase respectively, the power of balanced each phase of electric furnace, makes its production efficiency impartial and is improved.
In sum, Split-phase voltage regulating type furnace transformer provided by the utility model, by arranging three-phase windings 2 and 3 single-phase voltage regulating switches 3 in casing 1, each phase winding around again on three-phase windings 2 sets up lead-out wire 202, each lead-out wire 202 is connected with one of them single-phase voltage regulating switch 3 circuit respectively, thus is reached through the object that single-phase voltage regulating switch 3 regulates separately the output voltage of each phase of three-phase windings 2.Operating personnel can according to the real work voltage requirements of electric furnace, raise or reduce the output voltage of each phase on three-phase windings 2, finally make the output voltage of three-phase more balanced, significantly weaken the harmful effect of the energy trasfer that null drift causes, the power of each phase of electric furnace is also roughly the same, improve the operating efficiency of electric furnace, meet the Production requirement of Large Electric Furnace.
In addition, consider the unbalanced magnetic flux of the three-phase that may exist in three-phase windings 2, the i.e. existence of zero sequence fluxes, dysgenic problem can be caused to the performance of transformer and life-span, the iron core 201 of the three-phase windings 2 in the present embodiment, its structure is three-phase five-limb structure, and two post return yokes have been set up in the both sides of namely conventional in the art three-phase three-limb structure, thus provides loop for zero sequence fluxes.Setting like this, the zero sequence impedance of Split-phase voltage regulating type circuit transformer just becomes very little, reduces zero sequence loss, and magnetic flux when making single-phase voltage regulating switch 3 pairs of three-phase windings 2 carry out pressure regulation is balanced.
In addition, the arrangement that in casing 1, each parts are orderly, because contribute to the loss reducing transformer, is conveniently installed and wiring.For this reason, 3 the single-phase voltage regulating switches 3 be arranged in casing 1 are set to linearly evenly distributed distribution form by the present embodiment, and each single-phase voltage regulating switch 3 all with wherein a lead-out wire 202 is just right.Setting like this, will facilitate the wiring between single-phase voltage regulating switch 3 and lead-out wire 202, avoids the phenomenon occurring between cable being wound around, reduces transformer loss.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.The multiple of these embodiments is repaiied. changing will be apparent for those skilled in the art, and General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. a Split-phase voltage regulating type furnace transformer, it is characterized in that, comprise casing (1), be arranged at three-phase windings (2) in described casing (1) and 3 single-phase voltage regulating switches (3), and each phase winding on described three-phase windings (2) is provided with lead-out wire (201), each described lead-out wire (201) is connected with each self-corresponding described single-phase voltage regulating switch (3) circuit respectively.
2. Split-phase voltage regulating type circuit transformer according to claim 1, it is characterized in that, described three-phase windings (2) comprises iron core (202), and described iron core (202) is the three-phase five-limb structure for providing loop to zero sequence fluxes.
3. Split-phase voltage regulating type circuit transformer according to claim 2, is characterized in that, each described single-phase voltage regulating switch (3) is single-phase on-load voltage regulating switch.
4. Split-phase voltage regulating type circuit transformer according to claim 3, it is characterized in that, each described single-phase voltage regulating switch (3) in described casing (1) linearly shape be uniformly distributed, and each described single-phase voltage regulating switch (3) all with wherein a described lead-out wire (201) is just right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847885.9U CN205211575U (en) | 2015-10-29 | 2015-10-29 | Phase separating pressure regulating formula electric furnace transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847885.9U CN205211575U (en) | 2015-10-29 | 2015-10-29 | Phase separating pressure regulating formula electric furnace transformer |
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| CN205211575U true CN205211575U (en) | 2016-05-04 |
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| CN201520847885.9U Active CN205211575U (en) | 2015-10-29 | 2015-10-29 | Phase separating pressure regulating formula electric furnace transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
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2015
- 2015-10-29 CN CN201520847885.9U patent/CN205211575U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
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