CN216794874U - Variable frequency power supply cabinet for induction furnace - Google Patents
Variable frequency power supply cabinet for induction furnace Download PDFInfo
- Publication number
- CN216794874U CN216794874U CN202220115664.2U CN202220115664U CN216794874U CN 216794874 U CN216794874 U CN 216794874U CN 202220115664 U CN202220115664 U CN 202220115664U CN 216794874 U CN216794874 U CN 216794874U
- Authority
- CN
- China
- Prior art keywords
- cabinet
- output
- frequency power
- induction furnace
- variable frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a variable frequency power cabinet for an induction furnace, which comprises a cabinet body, a plurality of IGBT unit group structures and a plurality of resonance capacitors, wherein a first accommodating area for accommodating a plurality of I GBT unit group structures and a second accommodating area for accommodating a plurality of resonance capacitors are arranged in the cabinet body; p input copper bars are respectively arranged at the input ends of the I GBT unit group structures, and the P input copper bars of all the I GBT unit group structures are connected with the same PN input bus conductor; the output ends of the resonant capacitors are respectively provided with UV output conductors, and the UV output conductors of the resonant capacitors penetrate through the cabinet body to be connected with the same UV output confluence conductor arranged outside the cabinet body; and the output end of the IGBT unit group structure is connected with the input end of the resonance capacitor through UV output copper bars. The variable frequency power supply cabinet for the induction furnace is simplified, the occupied area for installing the variable frequency power supply cabinet for the induction furnace is reduced, and meanwhile, the variable frequency power supply cabinet for the induction furnace can form a standardized and serialized design.
Description
Technical Field
The utility model relates to a variable frequency power supply cabinet, in particular to a variable frequency power supply cabinet for an induction furnace.
Background
The induction furnace is a kind of electric heating equipment which utilizes the electromagnetic induction principle to induce current in the metal material in an alternating magnetic field so as to heat the material until the material is melted. The induction furnace mainly comprises an inductor, a furnace body, an IGBT power supply, a rectifier cabinet, a control system and the like, wherein the IGBT power supply comprises a frequency conversion cabinet and a capacitor cabinet, the rectifier cabinet is used for converting alternating current which is introduced by a customer and is subjected to voltage reduction by a transformer into direct current, and the frequency conversion cabinet is used for inverting the direct current into controllable alternating current and inputting the alternating current into a load (a furnace body coil) through the capacitor cabinet.
However, in addition, the existing variable frequency power supply is not reasonable in structural design, wherein the IGBT power supply and the capacitor box are of split structures, the whole split structure is long in length after being spliced, the occupied area for installation is large, and the split structure is not beneficial to standardization and serialization design of equipment.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a variable frequency power supply cabinet for an induction furnace.
The technical scheme of the utility model is realized as follows:
a variable frequency power cabinet for an induction furnace comprises a cabinet body, a plurality of IGBT unit group structures and a plurality of resonance capacitors, wherein a first containing area for containing the plurality of IGBT unit group structures and a second containing area for containing the plurality of resonance capacitors are arranged in the cabinet body;
p input copper bars are respectively arranged at the input ends of the IGBT unit group structures, and the P input copper bars of each IGBT unit group structure are connected with the same PN input bus conductor;
the output ends of the resonance capacitors are respectively provided with UV output conductors, and the UV output conductors of the resonance capacitors penetrate out of the cabinet body and are connected with the same UV output confluence conductor arranged outside the cabinet body;
the output end of the IGBT unit group structure is connected with the input end of the resonance capacitor through UV output copper bars; the UV output conductor, the UV output copper bar and the P input copper bar are respectively arranged in the cabinet body.
Further, the P input copper bar comprises a first P input copper bar and a second P input copper bar, a fuse is arranged between the first P input copper bar and the second P input copper bar, and the fuse is respectively in circuit connection with the first P input copper bar and the second P input copper bar.
Further, the IGBT unit group structure comprises a direct current middle capacitor and IGBT modules arranged on two side faces of the direct current middle capacitor, the P input copper bar is arranged on one side of the direct current middle capacitor and mounted with the terminal on the direct current middle capacitor in an adaptive mode, and the UV output copper bar is arranged on two sides of the direct current middle capacitor and mounted with the terminal on the IGBT modules in an adaptive mode.
Furthermore, a plurality of first clamping grooves matched with the IGBT unit group structure are formed in the first accommodating area, and the IGBT unit group structure is arranged in the first clamping grooves; and a plurality of second clamping grooves matched with the resonance capacitors are arranged in the first accommodating area, and the resonance capacitors are arranged in the second clamping grooves.
Furthermore, the first containing area and the second containing area are distributed in the cabinet body from top to bottom, and the first containing area is located above the first containing area.
Furthermore, a cooling water pipe is arranged outside the cabinet body.
Furthermore, the cooling water pipe and the UV output confluence conductor are arranged above the cabinet body in parallel.
Furthermore, the UV output copper bars are respectively fixed in the cabinet body through fixing plates.
Further, the cabinet body is provided with an opening for opening the cabinet body, and the opening is provided with a cabinet door.
Furthermore, a heat dissipation space communicated with each other is arranged behind the first containing area and the second containing area.
Compared with the prior art, the utility model has the following advantages: according to the variable frequency power cabinet for the induction furnace, the structure of the variable frequency power cabinet for the induction furnace is optimized, the IGBT unit group structure and the resonance capacitor are arranged in the same cabinet body and are respectively arranged in the first accommodating area and the second accommodating area of the cabinet body, so that the variable frequency power cabinet for the induction furnace is simplified, and compared with the split design in the prior art, the installation occupied area of the variable frequency power cabinet for the induction furnace is reduced; in addition, P input copper bars are respectively arranged at the input ends of the IGBT unit group structures, the P input copper bars of each IGBT unit group structure are connected with the same PN input bus conductor, UV output conductors are respectively arranged at the output ends of the resonance capacitors, and the UV output conductors of each resonance capacitor penetrate out of the cabinet body to be connected with the same UV output bus conductor arranged outside the cabinet body, so that the variable frequency power cabinet for the induction furnace can form a standardized and serialized design, when the power of the variable frequency power cabinet for a single induction furnace does not meet the requirement, the variable frequency power cabinets for a plurality of induction furnaces are in circuit connection, and the variable frequency power cabinet is very convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an exploded view of a variable frequency power cabinet for an induction furnace according to the present invention;
FIG. 2 is an exploded view of another view of the variable frequency power cabinet for an induction furnace according to the present invention;
FIG. 3 is a schematic diagram of a connection structure of a resonant capacitor and an IGBT unit group structure;
FIG. 4 is a schematic diagram of the exploded structure of FIG. 3;
FIG. 5 is a schematic structural diagram of an IGBT cell group structure;
fig. 6 is an explosion structure diagram of the IGBT cell group structure.
The attached drawings are as follows: 1 a resonance capacitor; 2, an IGBT unit group structure; 201 direct current intermediate capacitance; 202 an IGBT module; 3, a cabinet body; 301 a first containment zone; 3011 a first card slot; 302 a second containment area; 3021 a second card slot; 303 a heat dissipation space; 304 opening; 305 a cabinet door; 4P input copper bar; 401 a first P input copper bar; 402 second P input copper bar; 5PN input bus conductors; 6UV output conductors; 7UV output bus conductors; 8, UV output copper bars; 801U output copper bar; an 802V output copper bar; 9 a fuse; 10 cooling water pipes; 11 fixing the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the embodiment of the utility model discloses a variable frequency power supply cabinet for an induction furnace, which comprises a cabinet body 3, a plurality of IGBT unit group structures 2 and a plurality of resonance capacitors 1, wherein a first accommodating area 301 for accommodating the plurality of IGBT unit group structures 2 and a second accommodating area 302 for accommodating the plurality of resonance capacitors 1 are arranged in the cabinet body 3;
p input copper bars 4 are respectively arranged at the input ends of the IGBT unit group structures 2, and the P input copper bars 4 of the IGBT unit group structures 2 are connected with the same PN input bus conductor 5;
the output ends of the resonant capacitors 1 are respectively provided with UV output conductors 6, and the UV output conductors 6 of the resonant capacitors 1 penetrate through the cabinet body 3 to be connected with the same UV output confluence conductor 7 arranged outside the cabinet body 3;
the output end of the IGBT unit group structure 2 is connected with the input end of the resonance capacitor 1 through a UV output copper bar 8; the UV output conductor 6, the UV output copper bar 8 and the P input copper bar 4 are respectively arranged in the cabinet body 3.
In this embodiment, the IGBT unit group structure 2 and the resonant capacitor 1 are both disposed in the same cabinet 3 and are respectively disposed in the first accommodating area 301 and the first accommodating area 302 of the cabinet 3, so that the variable frequency power supply cabinet for the induction furnace is simplified, and compared with a split design in the prior art, an occupied area for mounting the variable frequency power supply cabinet for the induction furnace is reduced.
Meanwhile, in the present embodiment, the input ends of the IGBT unit group structures 2 are respectively provided with a P input copper bar 4, the P input copper bar 4 of each IGBT unit group structure 2 is connected to the same PN input bus conductor 5, the output ends of the resonant capacitors 1 are respectively provided with a UV output conductor 6, and the UV output conductors 6 of each resonant capacitor 1 penetrate out of the cabinet body 3 and are connected to the same UV output bus conductor 7 outside the cabinet body 3, so that the variable frequency power supply cabinet for the induction furnace of the present embodiment can form a standardized and serialized design structure.
In this embodiment, as shown in table 1, the power of one IGBT unit group structure 2 can reach 750kw, and when the power of the power supply cabinet does not meet the requirement, the IGBT unit group structure 2 is added in the first accommodation region 301 and the corresponding resonant capacitor 1 is added in the second accommodation region 302, so that the standardized design can be performed.
TABLE 1
As shown in table 1, the combination of the 3 types of power cabinets with the 3 standards can meet different power requirements, and can be designed in a standardized manner.
Specifically, as shown in fig. 1, the first accommodating section 301 and the second accommodating section 302 are distributed up and down in the cabinet 3, wherein the first accommodating section 302 is located above the first accommodating section 301. In the utility model, the distribution of the first accommodating area 301 and the second accommodating area 302 can facilitate the inspection and maintenance of the variable frequency power cabinet for the induction furnace.
As shown in fig. 1, a plurality of first card slots 3011 adapted to the IGBT unit group structures 2 are disposed in the first accommodating area 301, and the IGBT unit group structures 2 are disposed in the first card slots 3011, so as to facilitate installation and fixation of the IGBT unit group structures 2; a plurality of second card slots 3021 matched with the resonant capacitor 1 are arranged in the first accommodating area 302, and the resonant capacitor 1 is arranged in the second card slot 3021, so that the resonant capacitor 1 can be conveniently installed and fixed.
Further, in this embodiment, the first accommodating area 301 is hollow so as to facilitate heat dissipation between the resonant capacitors 1. Wherein, have certain interval between two adjacent IGBT unit group structures 2, have certain interval between two adjacent resonance electric capacity 1 simultaneously equally to make things convenient for air convection between each IGBT unit group structure 2, between each resonance electric capacity 1, between IGBT unit group structure 2 and the resonance electric capacity 1, the produced heat of convenient during operation IGBT unit group structure 2 and resonance electric capacity 1 is dispelled fast.
As shown in fig. 2, heat dissipation spaces 303 are disposed behind the first accommodation region 301 and the second accommodation region 302, and the heat dissipation spaces 303 can convect with air flows between the first accommodation region 301 and the first accommodation region 302, so as to facilitate rapid heat dissipation.
In this embodiment, as shown in fig. 4, the P input copper bar 4 includes a first P input copper bar 401 and a second P input copper bar 402, a fuse 9 is disposed between the first P input copper bar 401 and the second P input copper bar 402, and the fuse 9 is respectively in circuit connection with the first P input copper bar 401 and the second P input copper bar 402, so as to perform short-circuit protection on the IGBT unit group structure 2. When taking place the short circuit suddenly, fuse 9 automatic fusing to make 2 outage of IGBT unit group structure, just cut off the short circuit source from the source, in order to avoid better that induction furnace burns out with variable frequency power supply cabinet.
Further, as shown in fig. 5 and fig. 6, the IGBT cell group structure 2 includes a dc intermediate capacitor 201 and IGBT modules 202 disposed on two side surfaces of the dc intermediate capacitor 201, the P input copper bar 4 is disposed on one side of the dc intermediate capacitor 201 and is mounted in a manner of being matched with terminals on the dc intermediate capacitor 201, and the UV output copper bars 8 are respectively disposed on two sides of the dc intermediate capacitor 201 and are mounted in a manner of being matched with terminals on the IGBT modules 202. Wherein, UV output copper bar 8 includes U output copper bar 801 and V output copper bar 802.
In this embodiment, the P input copper bar 4 is disposed on one side of the dc intermediate capacitor 201, and the U output copper bar 801 and the V output copper bar 802 are respectively mounted on two side surfaces of the dc intermediate capacitor 201; when maintaining IGBT unit structure 2, drag out electric capacity 201 in the middle of the direct current and only need to correspond the maintenance to 4 groups of P input copper bar, appear the part that damages in the part in U output copper bar 801 and the three position of V output copper bar 802, avoided present P input copper bar 4, U output copper bar 801 and V output copper bar 802 install the situation that needs whole a large amount of parts of dismantlement and corresponding fixed part when maintaining together, it is convenient to corresponding the on-the-spot dismantlement maintenance in position, time saving and labor saving, the maintenance cost is reduced.
Meanwhile, in the embodiment, the two original direct current intermediate capacitors 201 are set as one direct current intermediate capacitor 201, so that the volume of the IGBT unit group structure is reduced to one half of the original volume, and the volume of the IGBT unit group structure 2 is reduced; and under the condition of reducing one direct current intermediate capacitor 201, the number of the required IGBT modules 202 is also reduced by half relatively, and the structure is simplified on the basis of not influencing the functions.
Further, the cabinet body 3 is also provided with a cooling water pipe 10 outside for heat dissipation of the cabinet body 3. When the cooling water cabinet is used, cooling liquid is introduced into the cooling water pipe 10 to cool and dissipate heat of the cabinet body 3.
Specifically, as shown in fig. 1 and 2, the cooling water pipe 10 and the UV output bus bar conductor 7 are arranged above the cabinet 3. Because induction furnace is with variable frequency power supply cabinet during operation, the heat that UV output conflux conductor 7 produced is great, consequently when condenser tube 10 and UV output conflux conductor 7 erect in the top of the cabinet body 3 side by side, also do benefit to UV output and converge conductor 7 and carry out quick heat dissipation, do benefit to easy to assemble condenser tube 10 moreover.
In this embodiment, UV output copper bar 8 is fixed in the cabinet body 3 through fixed plate 11 respectively to convenient fixed UV output copper bar 8 makes and arranges neatly between each part in the cabinet body 3, does benefit to later stage inspection and maintenance.
Further, be equipped with the opening 304 that is used for opening the cabinet body 3 on the cabinet body 3, opening 304 department is equipped with cabinet door 305 to conveniently open cabinet body 3 and look over the behavior of each parts such as IGBT unit group structure 2 and resonance electric capacity 1.
In summary, the structure of the variable frequency power supply cabinet for the induction furnace is optimized, the IGBT unit structure and the resonant capacitor 1 are both arranged in the same cabinet body 3 and are respectively arranged in the first accommodating area 301 and the first accommodating area 302 of the cabinet body 3, so that the variable frequency power supply cabinet for the induction furnace is simplified, and compared with the split design in the prior art, the installation occupied area of the variable frequency power supply cabinet for the induction furnace is reduced; in the utility model, the input ends of the IGBT unit group structures 2 are respectively provided with a P input copper bar 4, the P input copper bars 4 of the IGBT unit group structures 2 are connected with the same PN input confluence conductor 5, the output ends of the resonance capacitors 1 are respectively provided with a UV output conductor 6, and the UV output conductors 6 of the resonance capacitors 1 penetrate through the cabinet body 3 to be connected with the same UV output confluence conductor 7 arranged outside the cabinet body 3, so that the variable frequency power cabinet for the induction furnace can form a standardized and serialized design.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A variable frequency power cabinet for an induction furnace is characterized by comprising a cabinet body, a plurality of IGBT unit group structures and a plurality of resonance capacitors, wherein a first containing area for containing the plurality of IGBT unit group structures and a second containing area for containing the plurality of resonance capacitors are arranged in the cabinet body;
p input copper bars are respectively arranged at the input ends of the IGBT unit group structures, and the P input copper bars of each IGBT unit group structure are connected with the same PN input bus conductor;
the output ends of the resonance capacitors are respectively provided with UV output conductors, and the UV output conductors of the resonance capacitors penetrate out of the cabinet body and are connected with the same UV output confluence conductor arranged outside the cabinet body;
the output end of the IGBT unit group structure is connected with the input end of the resonance capacitor through UV output copper bars; the UV output conductor, the UV output copper bar and the P input copper bar are respectively arranged in the cabinet body.
2. The variable frequency power supply cabinet for the induction furnace according to claim 1, wherein the P input copper bar comprises a first P input copper bar and a second P input copper bar, a fuse is arranged between the first P input copper bar and the second P input copper bar, and the fuse is respectively in circuit connection with the first P input copper bar and the second P input copper bar.
3. The variable frequency power cabinet for the induction furnace according to claim 1, wherein the IGBT unit group structure comprises a direct current intermediate capacitor and IGBT modules arranged on two side surfaces of the direct current intermediate capacitor, the P input copper bar is arranged on one side of the direct current intermediate capacitor and is matched and installed with a terminal on the direct current intermediate capacitor, and the UV output copper bars are respectively arranged on two sides of the direct current intermediate capacitor and are matched and installed with a terminal on the IGBT module.
4. The variable-frequency power cabinet for the induction furnace according to claim 1, wherein a plurality of first clamping grooves matched with the IGBT unit group structure are formed in the first accommodating area, and the IGBT unit group structure is arranged in the first clamping grooves; and a plurality of second clamping grooves matched with the resonance capacitors are arranged in the first accommodating area, and the resonance capacitors are arranged in the second clamping grooves.
5. The variable frequency power cabinet for the induction furnace according to claim 1, wherein the first accommodating area and the second accommodating area are distributed vertically in the cabinet body, and the first accommodating area is located above the first accommodating area.
6. The variable frequency power supply cabinet for the induction furnace according to claim 1, wherein a cooling water pipe is further arranged outside the cabinet body.
7. The variable frequency power cabinet for the induction furnace according to claim 6, wherein the cooling water pipe and the UV output bus conductor are arranged above the cabinet body in parallel.
8. The variable frequency power supply cabinet for the induction furnace according to claim 1, wherein the UV output copper bars are respectively fixed in the cabinet body through fixing plates.
9. The variable frequency power cabinet for the induction furnace according to claim 1, wherein an opening for opening the cabinet body is arranged on the cabinet body, and a cabinet door is arranged at the opening.
10. The variable frequency power cabinet for the induction furnace according to claim 1, wherein a heat dissipation space communicated with each other is provided behind the first accommodation area and the second accommodation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220115664.2U CN216794874U (en) | 2022-01-17 | 2022-01-17 | Variable frequency power supply cabinet for induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220115664.2U CN216794874U (en) | 2022-01-17 | 2022-01-17 | Variable frequency power supply cabinet for induction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216794874U true CN216794874U (en) | 2022-06-21 |
Family
ID=82013334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220115664.2U Active CN216794874U (en) | 2022-01-17 | 2022-01-17 | Variable frequency power supply cabinet for induction furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216794874U (en) |
-
2022
- 2022-01-17 CN CN202220115664.2U patent/CN216794874U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202034891U (en) | Full-water-cooling power module | |
| CN107078652A (en) | Inverter with multiple piece housing and internal cooling air passage | |
| CN103066859A (en) | High-power high-voltage frequency inverter power unit | |
| US20120229977A1 (en) | Coaxial Capacitor Bus Termination | |
| CN201113775Y (en) | Large power high voltage frequency conversion combination type power unit | |
| CN216794874U (en) | Variable frequency power supply cabinet for induction furnace | |
| CN103269169A (en) | Thyristor rectifier module | |
| US20150138729A1 (en) | Solar Inverter | |
| CN108880200B (en) | Water-cooling and air-cooling combined alternating-current excitation frequency converter | |
| CN210608899U (en) | Converter power unit | |
| CN110492721B (en) | Multiport power electronic transformer | |
| US20220192047A1 (en) | Cooling system for use in power converters | |
| CN110061630B (en) | Locomotive rectifying device | |
| CN110600231A (en) | Protection device for series filter reactor | |
| JP6111891B2 (en) | Power supply | |
| RU2815815C1 (en) | High-voltage converter module with cooling system | |
| CN215601203U (en) | Inverter device | |
| CN213342070U (en) | Water-cooling type power module of high-voltage inverter | |
| CN220475173U (en) | Track traffic converter cabinet | |
| CN218919731U (en) | Load cabinet | |
| KR20130061859A (en) | Distributing board | |
| CN212365741U (en) | Water-cooling heat dissipation direct current filter capacitor | |
| CN112448597B (en) | Power cell arrangement | |
| CN218447627U (en) | Electric cabinet body and heat radiation structure of circuit breaker thereof | |
| CN107799504A (en) | Power cell and the converter for including it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |