CN210297526U - Mining unit-type frequency converter - Google Patents
Mining unit-type frequency converter Download PDFInfo
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- CN210297526U CN210297526U CN201920998501.1U CN201920998501U CN210297526U CN 210297526 U CN210297526 U CN 210297526U CN 201920998501 U CN201920998501 U CN 201920998501U CN 210297526 U CN210297526 U CN 210297526U
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Abstract
The utility model relates to a mining unit-type converter, including converter cabinet and regulating cabinet, the converter cabinet includes the power unit, the current sensor subassembly, and voltage sensor subassembly is qualified for the next round of competitions side synchronous transformer subassembly and discharge resistance, and the power unit passes through connected modes fixed mounting such as guide rail, bolt in the power unit cabinet, and the reasonable placing at cabinet body rear portion of current sensor subassembly, voltage sensor subassembly, the side synchronous transformer subassembly of being qualified for the next round of competitions and discharge resistance, the regulating cabinet includes inlet wire contactor subassembly, pre-charging transformer, and boost plate subassembly, sensor power and charging circuit board subassembly and drive plate fan power supply module, above-mentioned device pass through guide rail, bolt fixed mounting in the switch board, and this technical scheme volume is compacter, and power density is big.
Description
Technical Field
The utility model relates to a converter, concretely relates to mining unit formula converter belongs to mining converter structural component technical field.
Background
The existing mining three-level frequency converter is complex in structure, complex in installation process and inconvenient in later maintenance. For convenience of maintenance, the converter in the prior converter mostly adopts a unit structure for convenience of maintenance, but the unit structure of the power unit in the prior converter cabinet is directly bolted with a copper bar at the rear part of the converter cabinet through a bus bar extension unit, and after the converter cabinet breaks down, the bolt still needs to be removed from the rear part of the cabinet body to enable the power unit, so that the convenient maintenance of the power unit cannot be realized; and the existing adjusting cabinet is often provided with a wire inlet cabinet in the using process, so that the volume of the frequency converter is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses just to the problem that exists among the prior art, provide a mining unit formula converter, this technical scheme volume is compacter, and power density is big.
In order to realize the above-mentioned purpose, the technical scheme of the utility model as follows, a mining unit formula converter, a serial communication port, including converter cabinet and regulation cabinet, the converter cabinet includes power unit, current sensor subassembly, and voltage sensor subassembly is qualified for the next round of competitions side synchronous transformer subassembly and discharge resistance, and power unit passes through connected modes fixed mounting such as guide rail, bolt in the power unit cabinet, and current sensor subassembly, voltage sensor subassembly, the side synchronous transformer subassembly of being qualified for the next round of competitions and discharge resistance are reasonable places at cabinet body rear portion. In the embodiment, the installation mode of the current sensor is optimized, the current sensor is originally installed on a small installation plate, then the installation plate is installed on the air duct bottom plate, and the current sensor is directly installed on the air duct bottom plate, so that the installation steps are simplified, and the firmness of the current sensor is also improved. The regulating cabinet comprises an incoming line contactor assembly 6, a pre-charging transformer 7, a boosting board assembly 8, a sensor power supply 9, a charging circuit board assembly and a driving board fan power supply assembly 10, and the devices are fixedly installed in the control cabinet through guide rails and bolts.
As an improvement of the utility model, the power unit 1 comprises an IGBT and a drive board thereof, a noninductive bus, a quick connecting device, an air-cooled radiator, a capacitor assembly and a unit shell, wherein the IGBT and the drive board thereof are mounted on the air-cooled radiator through bolts to form a power device assembly; the power device assembly and the capacitor assembly are arranged in the unit shell side by side and are fastened on the shell through bolts, the capacitor assembly is arranged on the right side of the power device assembly, the non-inductive bus is connected with the capacitor, the IGBT and the quick connecting device through the bolts, so that the stray inductance of the main capacitor and the IGBT, which is close to the nearest loop, is small, adverse factors such as electromagnetic interference caused by reasons such as secondary connection are reduced, and the external connection of alternating-current and direct-current copper bars is more convenient.
As an improvement of the utility model, noninductive generating line is placed for the level, the effectual atress problem of eliminating generating line and IGBT junction.
As an improvement of the utility model, the power unit still includes pulse distribution board machine case and pulse distribution board and shielding box, in the pulse distribution circuit board passed through bolt installation shielding box, the shielding box passed through on the left unit front bezel of bolt installation forced air cooling radiator. The mounting position of the shielding box is beside the side air-cooled radiator of the unit, so that the shielding box can be drawn out from the front of the unit, and the installation, maintenance and debugging are convenient; and the height of the power unit is further compressed due to the installation position at the side part.
As an improvement of the utility model, the air intake setting of forced air cooling radiator is in the front of unit shell, and the air outlet setting is at the back of unit shell, through the position of bolt installation at the air outlet of forced air cooling radiator, the noninductive generating line is placed for the level.
As an improvement of the utility model, be equipped with quick connecting device between the shell backplate of power unit and the converter cabinet backplate, this quick connecting device is used for realizing just can directly taking power unit out in front of the cabinet body.
As an improvement of the utility model, the quick connecting device consists of a plug head and a plug seat; the plug head is arranged on the rear plate of the unit shell, the plug seat component is arranged on the rear plate of the converter cabinet, and the quick connecting device realizes the electric connection and disconnection of the power unit through the matching of the plug head and the plug seat. Selecting a quick connector, namely selecting a plug head CZC-B-4-630A; the plug seat CZT-B-4/6 x 60. And the heat radiation fan is fixed on the rear plate of the unit shell and used for placing the quick connecting device to be placed.
As an improvement of the utility model, inlet wire contactor subassembly has been installed at the rear portion of regulating cabinet to use the metal division board to carry out strong and weak electric isolation, inlet wire contactor subassembly comprises inlet wire contactor and fast melting, the inlet wire contactor with melt soon and pass through copper bar bolted connection together. High-voltage protection at the rear part of the cabinet body: and adopting inorganic glass for isolating the outside and setting a charged danger mark. Therefore, the space of the adjusting cabinet is fully utilized, and the high-voltage wiring problem is optimized.
Compared with the prior art, the utility model has the advantages that 1) in the technical scheme, the rear part of the power unit is added with the quick connecting device, so that the power unit can be directly drawn out in front without removing a bolt at the rear part of the cabinet body, and the installation and maintenance are convenient; a quick connecting device is used in the adjusting cabinet, so that an incoming cabinet is saved; 2) in the technical scheme, the power unit optimizes the installation mode of the pulse distribution circuit board, and is installed in an aluminum shielding box, and the installation position of the shielding box is beside the side air-cooled radiator of the unit and can be drawn out from the front of the unit, so that the installation, maintenance and debugging are convenient; the height of the unit is further compressed due to the side mounting locations; 3) the technical scheme fully utilizes the space of the adjusting cabinet, and has more compact and reasonable structure and higher safety; 4) the technical scheme adopts the modular design of units, has high power density, is convenient for quick installation and maintenance, and has more compact and ingenious overall design.
Drawings
Fig. 1 is a structure diagram of a converter cabinet of the present invention;
FIG. 2 is a diagram of the overall structure of a power unit in a converter cabinet;
FIG. 3 is an exploded view of the power unit;
FIG. 4 is a schematic diagram of a quick connector connection in a power cell;
FIG. 5 is a diagram of the overall structure of a converter cabinet and a diagram of an incoming line contactor assembly;
fig. 6 is an exploded view of the adjustment cabinet.
In the figure: 1. the device comprises a power unit, a current sensor assembly, a voltage sensor assembly, a wire outlet side synchronous transformer assembly, a wire outlet contactor assembly, a pre-charging transformer, a wire inlet contactor assembly, a pre-charging transformer, a wire outlet side synchronous transformer assembly, a wire outlet contactor assembly, a wire inlet contactor assembly, a wire outlet contactor; 6-1, feeding a contactor, 6-1, and quickly melting; 1-1 parts of IGBT (insulated gate bipolar transistor) and a drive plate thereof, 1-2 parts of a non-inductive bus, 1-3 parts of a quick connecting device, 1-4 parts of a pulse distribution plate case, 1-5 parts of an air-cooled radiator, 1-6 parts of a capacitor, 1-7 parts of a pulse distribution plate and a shielding box, 1-8 parts of a unit shell, 11 parts of a converter cabinet rear plate, 12 parts of a heat radiation fan, 131 parts of a plug head, 132 parts of a plug seat.
The specific implementation mode is as follows:
for the purpose of enhancing the understanding of the present invention, the following detailed description is made with reference to the accompanying drawings.
Example 1: referring to fig. 1, the mining unit-type frequency converter mainly comprises a regulating cabinet and a converter cabinet, wherein the converter cabinet comprises a power unit 1, a current sensor assembly 2, a voltage sensor assembly 3, an outgoing line side synchronous transformer assembly 4 and a discharge resistor 5, the power unit 1 is fixedly installed at a corresponding position in the power unit cabinet through connecting modes such as guide rails, bolts and the like, and the current sensor assembly 2, the voltage sensor assembly 3, the outgoing line side synchronous transformer assembly 4 and the discharge resistor 5 are reasonably placed at the rear part of a cabinet body. In the embodiment, the installation mode of the current sensor is optimized, the current sensor is originally installed on a small installation plate, then the installation plate is installed on the air duct bottom plate, and the current sensor is directly installed on the air duct bottom plate, so that the installation steps are simplified, and the firmness of the current sensor is also improved. Referring to fig. 6, the regulating cabinet comprises an incoming line contactor assembly 6, a pre-charging transformer 7, a boosting board assembly 8, a sensor power supply 9, a charging circuit board assembly and a driving board fan power supply assembly 10, which are reasonably and fixedly installed at corresponding positions in the control cabinet.
Referring to fig. 2-3, in the power unit, the power unit 1 includes an IGBT and a drive board 1-1 thereof, a non-inductive bus 1-2, a quick connection device 1-3, an air-cooled heat sink 1-5, a capacitor assembly 1-6, and a unit housing 1-8, and the IGBT and the drive board 1-1 thereof are mounted on the air-cooled heat sink through bolts to form a power device assembly; the power device assembly and the capacitor assemblies 1-6 are arranged in the unit shell side by side and are fastened on the shell through bolts, the capacitor assemblies are arranged on the right side of the power device assembly, the non-inductive bus is connected with the capacitors, the IGBT and the quick connecting device through the bolts, so that stray inductance of the main capacitors and the IGBT in a circuit closest to the distance is small, adverse factors such as electromagnetic interference caused by secondary connection and the like are reduced, and the AC and DC copper bars are more convenient to connect externally.
The power unit further comprises pulse distribution board cabinets 1-4, pulse distribution boards and shielding boxes 1-7, the pulse distribution circuit boards are installed in the shielding boxes through bolts, and the shielding boxes are installed on the unit front plates on the left sides of the air cooling radiators through bolts. The mounting position of the shielding box is beside the side air-cooled radiator of the unit, so that the shielding box can be drawn out from the front of the unit, and the installation, maintenance and debugging are convenient; and the height of the power unit is further compressed due to the installation position at the side part. The noninductive bus is horizontally arranged, so that the stress problem at the joint of the bus and the IGBT is effectively eliminated.
The noninductive bus is connected with the capacitor, the IGBT and the quick connecting device through the bolts, so that the stray inductance of the main capacitor and the IGBT, which is closest to the loop, is smaller, adverse factors such as electromagnetic interference caused by reasons such as secondary connection are reduced, and the AC and DC copper bars are more convenient to connect externally.
The air inlet of the air-cooled radiator is arranged on the front side of the shell, the air outlet is arranged on the back side of the shell, and the heat radiation fan is arranged at the position of the air outlet of the air-cooled radiator through a bolt.
Referring to fig. 4, a quick connection device 1-3 is provided between the rear panel of the enclosure of the power unit and the rear panel of the converter cabinet, and is used for directly drawing out the power unit from the front of the cabinet body. The quick connecting device consists of two parts, namely a plug head 131 and a plug seat 132; the plug head is arranged on the rear plate of the unit shell, the plug seat component is arranged on the rear plate of the converter cabinet, and the quick connecting device realizes the electric connection and disconnection of the power unit through the matching of the plug head and the plug seat. Selecting a quick connector, namely selecting a plug head CZC-B-4-630A; the plug seat CZT-B-4/6 x 60. And the heat radiation fan is fixed on the rear plate of the unit shell and used for placing the quick connecting device to be placed.
Referring to fig. 5, the rear part of the regulating cabinet is provided with an incoming line contactor assembly 6-1 and is isolated by strong and weak electricity through a metal isolation plate. The incoming line contactor assembly is composed of an incoming line contactor and a fast fuse, and the incoming line contactor and the fast fuse are connected together through a copper bar bolt. High-voltage protection at the rear part of the cabinet body: and adopting inorganic glass for isolating the outside and setting a charged danger mark. Therefore, the space of the adjusting cabinet is fully utilized, and the high-voltage wiring problem is optimized.
In addition, the size of the adjustment cabinet in this embodiment is 600 × 2000 × 1000mm (width × height × depth), and a touch screen, an indicator light, and an operation button are mounted on the cabinet door. The size of the power unit cabinet is 1200 x 2000 x 1000mm (width x height x depth), one layer of each group of power units is placed, six groups of power units are counted, and each group of power units is one bridge arm of the three-level inverter. The rear part of the cabinet body is provided with 6 current sensors, three voltage sensors and two pre-charging resistors.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent changes and substitutions made on the basis of the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (10)
1. A mining unit-type frequency converter comprises a converter cabinet and an adjusting cabinet and is characterized in that a quick connecting device is arranged between a shell rear plate of a power unit in the converter cabinet and a converter cabinet rear plate, the quick connecting device is used for directly drawing out the power unit from the front of a cabinet body, an incoming line contactor assembly is installed at the rear part of the adjusting cabinet, and a metal isolation plate is used for isolating strong current and weak current.
2. The mining unitary frequency converter according to claim 1, characterized in that the quick-connect means are composed of a plug head, a plug base; the plug head is arranged on the rear plate of the unit shell, the plug seat component is arranged on the rear plate of the converter cabinet, and the quick connecting device realizes the electric connection and disconnection of the power unit through the matching of the plug head and the plug seat.
3. The mining unitary frequency converter of claim 1, wherein the incoming contactor assembly is comprised of an incoming contactor and a fast fuse, the incoming contactor and fast fuse being bolted together by copper bars.
4. The mining-unit-type frequency converter of claim 2, characterized in that: and the plug head of the quick connecting device is connected with the IGBT, the drive plate and the capacitor thereof through the non-inductive bus.
5. The mining-unit-type frequency converter of claim 4, wherein: the IGBT and the driving board thereof are arranged on the air-cooled radiator through bolts to form a power device assembly, and are fastened on the unit shell through bolts.
6. The mining-unit-type frequency converter of claim 5, wherein: the noninductive bus is connected with the capacitor, the IGBT and the quick connecting device through bolts.
7. The mining-unit-type frequency converter of claim 4, wherein: the power unit also comprises a capacitor assembly, and the capacitor assembly is arranged on the right side of the power device assembly.
8. The mining-unit-type frequency converter of claim 1, wherein: the power unit also comprises a pulse distribution plate, wherein the pulse distribution plate is arranged in a shielding box, and the shielding box is arranged on a front plate of the unit shell on the left side of the air-cooled radiator through a bolt.
9. The mining-unit-type frequency converter of claim 5, wherein: the air inlet of the air-cooled radiator is arranged on the front side of the unit shell, the air outlet of the air-cooled radiator is arranged on the back side of the unit shell, the air outlet of the air-cooled radiator is arranged at the position of the air outlet of the air-cooled radiator through a bolt, and the noninductive bus is horizontally arranged.
10. The mining-unit-type frequency converter according to any of claims 1 to 9, characterized in that: the power unit is fixedly arranged at the corresponding position in the converter cabinet through the connection mode of the guide rail and the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920998501.1U CN210297526U (en) | 2019-06-29 | 2019-06-29 | Mining unit-type frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920998501.1U CN210297526U (en) | 2019-06-29 | 2019-06-29 | Mining unit-type frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297526U true CN210297526U (en) | 2020-04-10 |
Family
ID=70099548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920998501.1U Active CN210297526U (en) | 2019-06-29 | 2019-06-29 | Mining unit-type frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210297526U (en) |
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2019
- 2019-06-29 CN CN201920998501.1U patent/CN210297526U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 221116 No. second Zhujianglu Road Industrial Park, Xuzhou high tech Zone, Jiangsu 7 Patentee after: Jiangsu Guochuan Electric Co.,Ltd. Address before: 221116 No. second Zhujianglu Road Industrial Park, Xuzhou high tech Zone, Jiangsu 7 Patentee before: CHINA MINING DRIVES & AUTOMATION Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |