CN222441579U - Automatic switching cabinet without isolating switch for high-voltage frequency converter - Google Patents
Automatic switching cabinet without isolating switch for high-voltage frequency converter Download PDFInfo
- Publication number
- CN222441579U CN222441579U CN202420151705.2U CN202420151705U CN222441579U CN 222441579 U CN222441579 U CN 222441579U CN 202420151705 U CN202420151705 U CN 202420151705U CN 222441579 U CN222441579 U CN 222441579U
- Authority
- CN
- China
- Prior art keywords
- cabinet
- vacuum contactor
- input
- output
- insulator
- 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
Landscapes
- Patch Boards (AREA)
Abstract
本实用新型的高压变频器无隔离开关一拖一自动切换柜，包括柜体和固定于柜体中的输入、旁路和输出真空接触器，特征在于：所述柜体中没有设置隔离开关；柜体中固定有输入绝缘子和输出绝缘子；输入真空接触器经第一、第二连接铜排与旁路真空接触器相连接，旁路真空接触经第三、第四连接铜排与输出绝缘子相连接；输入、输出真空接触器与变频器的输入、输出端相连接。本实用新型的自动切换柜，不仅实现了对负载电机的工频和变频之间的转换控制，同时，由于柜体中没有设置隔离开关，不仅减少了柜体内的器件，而且有效缩小了切换柜的体积和制作成本，更加适于应用。
The utility model is a high-voltage frequency converter automatic switching cabinet without isolating switch, including a cabinet and input, bypass and output vacuum contactors fixed in the cabinet, characterized in that: the cabinet is not provided with an isolating switch; the cabinet is fixed with input insulators and output insulators; the input vacuum contactor is connected to the bypass vacuum contactor via the first and second connecting copper bars, and the bypass vacuum contactor is connected to the output insulator via the third and fourth connecting copper bars; the input and output vacuum contactors are connected to the input and output terminals of the frequency converter. The automatic switching cabinet of the utility model not only realizes the conversion control between the industrial frequency and the variable frequency of the load motor, but also, since the cabinet is not provided with an isolating switch, it not only reduces the components in the cabinet, but also effectively reduces the volume and production cost of the switching cabinet, making it more suitable for application.
Description
Technical Field
The utility model relates to an automatic switching cabinet, in particular to a one-to-one automatic switching cabinet without a disconnecting switch for a high-voltage frequency converter.
Background
At present, in the application occasion of the frequency converter, an input isolating switch and an output isolating switch are arranged in the main loop of an automatic switching cabinet of the frequency converter so as to realize the electrical isolation of the input end and the output end of the frequency converter. The input and output isolating switch is generally composed of a fixed contact, a movable contact and an operating handle, which leads to a larger volume of the isolating switch, and if the isolating switch with a larger volume is arranged in the automatic switching cabinet of the frequency converter, the isolating switch necessarily leads to a larger volume of the automatic switching cabinet of the frequency converter.
However, in the actual operation process of the automatic switching cabinet of the frequency converter, the actual utilization rate of the isolating switch is extremely low, that is, the isolating switch is always in a closed state, so that the automatic switching cabinet provided with the output isolating switch is large in size and high in cost, and occupies a large installation space, which is slightly wasted in function and economy. If the input and output isolating switches in the automatic switching cabinet can be omitted, the switching cabinet devices can be reduced, the cabinet size can be reduced, and the cost can be saved.
Disclosure of Invention
In order to overcome the defects of the technical problems, the utility model provides the automatic switching cabinet without the isolating switch for the high-voltage frequency converter.
The utility model discloses a one-to-one automatic switching cabinet without an isolating switch for a high-voltage frequency converter, which comprises a cabinet body, an input vacuum contactor, a bypass vacuum contactor and an output vacuum contactor, wherein the input vacuum contactor, the bypass vacuum contactor and the output vacuum contactor are fixed in the cabinet body;
The input vacuum contactor is characterized in that a lower port terminal or an upper port terminal of the input vacuum contactor is connected with an input insulator through a first connecting copper bar, the input insulator is connected with an upper port terminal or a lower port terminal of a bypass vacuum contactor through a second connecting copper bar, a terminal which is not connected with the input insulator on the bypass vacuum contactor is connected with an output insulator through a third connecting copper bar, the upper port terminal or the lower port terminal of the output vacuum contactor is connected with the output insulator through a fourth connecting copper bar, a terminal which is not connected with the input insulator on the input vacuum contactor is connected with an input end of the frequency converter through a cable penetrating through a bottom threading hole, and a terminal which is not connected with the output insulator on the output vacuum contactor is connected with an output end of the frequency converter through a cable penetrating through the bottom threading hole.
The utility model relates to a high-voltage frequency converter one-to-one automatic switching cabinet without a disconnecting switch, a front cabinet door of a cabinet body is provided with a controller mounting box, the controller is fixed with the controller mounting box in, and the outside of controller mounting box is fixed with the ventilation window.
According to the automatic switching cabinet without the isolating switch for the high-voltage frequency converter, the forklift holes are formed in the bottom of the cabinet body, and the hanging rings are fixed on four corners of the top of the cabinet body.
The utility model discloses a high-voltage frequency converter one-to-one automatic switching cabinet without a disconnecting switch.
The utility model discloses a high-voltage frequency converter one-to-one automatic switching cabinet without a disconnecting switch.
The utility model discloses a high-voltage frequency converter automatic switching cabinet without a disconnecting switch, wherein upright posts on two side surfaces of a cabinet body are respectively provided with an assembly hole assembled with other cabinet bodies.
The utility model has the advantages that the high-voltage frequency converter is provided with an automatic switching cabinet without an isolating switch, and consists of a cabinet body, an input vacuum contactor, an output vacuum contactor, a bypass vacuum contactor and an output insulator, wherein the input vacuum contactor, the output vacuum contactor, the bypass vacuum contactor and the output insulator are arranged in the cabinet body, one end of the input vacuum contactor is connected with the input end of the frequency converter, the other end of the input vacuum contactor is connected with one end of the bypass vacuum contactor, one end of the output vacuum contactor is connected with the output end of the frequency converter, and the other end of the output vacuum contactor is connected with the other end of the bypass vacuum contactor. Meanwhile, as the isolating switch is not arranged in the cabinet body, not only are devices in the cabinet body reduced, but also the volume and the manufacturing cost of the switching cabinet are effectively reduced, and the cabinet is more suitable for application.
Further, the forklift hole is formed in the bottom of the cabinet body, the hanging ring is arranged at the top of the cabinet body, so that the switch cabinet can be conveniently carried and hung, the assembly holes are formed in the upright posts on the side surfaces of the cabinet body, the switch cabinet and other cabinet bodies can be conveniently assembled together, and the wiring hole is formed in the top of the cabinet body, so that the wiring can be carried out from the upper portion of the cabinet body under the condition that wiring from the bottom of the cabinet body is inconvenient, and the switch cabinet is higher in adaptability.
Drawings
FIG. 1 is a front view of an embodiment 1 of the automatic switch cabinet without a disconnecting switch of the present utility model;
FIG. 2 is a left side view of embodiment 1 of the automatic switch cabinet without disconnecting switch of the utility model;
FIG. 3 is a right side view of embodiment 1 of the automatic switch cabinet without disconnecting switch of the utility model;
FIG. 4 is a bottom view of embodiment 1 of the automatic transfer cabinet without disconnecting switch of the utility model;
FIGS. 5 and 6 are perspective views of an embodiment 1 of a one-to-one automatic switching cabinet without a disconnecting switch according to the present utility model;
FIG. 7 is a schematic diagram of an embodiment 2 of a one-to-one automatic switching cabinet without a disconnecting switch;
FIG. 8 is a schematic diagram of an embodiment 3 of a one-to-one automatic switching cabinet without a disconnecting switch;
FIG. 9 is a schematic diagram of the cooperation of the front cabinet door and the ventilation window in the present utility model;
Fig. 10 is a schematic circuit diagram of the automatic switching cabinet without the isolating switch.
In the figure, a cabinet body 1, an input vacuum contactor 2, a bypass vacuum contactor 3, an output vacuum contactor 4, an input insulator 5, an output insulator 6, a first connection copper bar 7, a second connection copper bar 8, a third connection copper bar 9, an upper port terminal 10, a lower port terminal 11, a controller mounting box 12, a forklift hole 13, a lifting ring 14, a front cabinet door 15, a side cabinet door 16, a rear cabinet door 17, a top threading hole 18, a display screen mounting groove 19, an indicator lamp mounting hole 20, an assembly hole 21, a frequency converter 22, a bottom threading hole 23, a ventilation window 24 and a fourth connection copper bar 25 are arranged.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
Embodiment 1, as shown in fig. 1 to 4, a front view, a left view, a right view and a bottom view of an embodiment 1 of the one-to-one automatic switching cabinet without a disconnecting switch of the present utility model are shown, and fig. 5 and 6 are perspective views thereof, wherein the one-to-one automatic switching cabinet without a disconnecting switch of the present utility model is composed of a cabinet body 1, an input vacuum contactor 2, a bypass vacuum contactor 3, an output vacuum contactor 4, an input insulator 5 and an output insulator 6 which are arranged in the cabinet body 1, the cabinet body 1 plays a fixing and supporting role, a front cabinet door 15 and a rear cabinet door 17 are respectively arranged on the front side and the rear side of the cabinet body 1, and side cabinet doors 16 are respectively arranged on both sides of the cabinet body 1. The input vacuum contactor 2 is fixed at the upper end of the front side in the cabinet body 1, the bypass vacuum contactor 3 is fixed in the middle of the rear side in the cabinet body 1, and the output vacuum contactor 4 is positioned below the bypass vacuum contactor 3. The input vacuum contactor 2, the bypass vacuum contactor 3, and the output vacuum contactor 4 are in a state of being aligned with each other, the input insulator 5 is fixed at a position close to the input vacuum contactor 2, and the output insulator 6 is fixed at a position close to the output vacuum contactor 4. The bottom of the cabinet body 1 is provided with a bottom threading hole 23.
The lower port terminal 11 of the illustrated input vacuum contactor 2 is connected with the input insulator 5 via the first connection copper bar 7, and the upper port terminal of the bypass vacuum contactor 3 is connected with the input insulator 5 via the second connection copper bar 8, so that the lower port terminal 11 of the input vacuum contactor 2 is electrically connected with the upper port terminal 10 of the bypass vacuum contactor 3 via the first connection copper bar 7 and the second connection copper bar 8. The upper port terminal of the output vacuum contactor 4 is connected with the output insulator 6 through the fourth connecting copper bar 25, and the lower port terminal of the bypass vacuum contactor 3 is connected with the output insulator 6 through the third connecting copper bar 9, so that the lower port terminal of the bypass vacuum contactor 3 is electrically connected with the upper port electron of the output vacuum contactor 4 through the third connecting copper bar 9 and the fourth connecting copper bar 25 in sequence.
The upper port terminal 10 of the input vacuum contactor 2 shown is connected to the input of the frequency converter 22 via a cable passing through the bottom threading hole 23, and the lower port terminal 11 of the output vacuum contactor 2 is connected to the output of the frequency converter 22 via a cable passing through the bottom threading hole 23.
As shown in fig. 10, a schematic circuit diagram of the automatic switching cabinet without the isolating switch is shown, KM1 in fig. 10 represents an input vacuum contactor 2, km3 represents a bypass vacuum contactor 3, km2 represents an output vacuum contactor 4, an input insulator 5 is connected with a power grid, and an output insulator is connected with a load motor. When the motor is required to be subjected to variable frequency control, the bypass vacuum contactor 3 is opened, the input vacuum contactor 2 and the output vacuum contactor 4 are closed, at the moment, alternating current input by a power grid is input to the motor after being subjected to variable frequency by the frequency converter 22 to control the variable frequency work of the motor, when the motor is required to be subjected to power frequency control, the input vacuum contactor 2 and the output vacuum contactor 4 are both opened, the bypass vacuum contactor 3 is closed, at the moment, the alternating current input by the power grid directly drives the load motor to work, and the power frequency driving of the motor is realized. Therefore, the automatic switching cabinet without the isolating switch can realize the switching control of the power frequency and the variable frequency of the load motor.
The isolating switch is not arranged in the cabinet body 1, so that the space for arranging the isolating switch is saved, the volume of the cabinet body 1 can be effectively reduced, the manufacturing cost of the automatic switching cabinet without the isolating switch is reduced, and the space for installing the switching cabinet is saved.
The front cabinet door 15 of the cabinet body 1 is provided with a controller installation box 12, a display screen installation groove 19 and an indicator lamp installation hole 20, the controller of the switch cabinet is installed in the controller installation box 12, as shown in fig. 9, a schematic diagram of the cooperation of the front cabinet door and the ventilation window is given, and after the controller is installed in the controller installation box 12, the ventilation window 24 is installed on the outer side of the controller. The display screen mounting groove 19 is used for placing the display screen, and the pilot lamp mounting hole 20 is used for placing the pilot lamp.
Fork truck hole 13 has been seted up to the bottom of the cabinet body 1 shown to utilize fork truck to carry whole switch cabinet. Hanging rings 14 are fixed on four corners above the cabinet body 1 so as to use a lifting device to lift and mount the whole switching cabinet. The upright posts on the two sides of the cabinet body 1 are provided with assembly holes 21, and the cabinet body 1 can be assembled together like other cabinet bodies through the assembly holes 21. The upper surface of the cabinet 1 is provided with a top threading hole 18, and for the case where threading from the bottom threading hole 23 is inconvenient, cables connected to the input vacuum contactor 2, the output vacuum contactor 4, the input insulator 5 and the output insulator 6 may pass through the top threading hole 18.
In embodiment 2, as shown in fig. 7, a schematic structural diagram of an embodiment 2 of the one-to-one automatic switching cabinet without a disconnecting switch of the present utility model is provided, and the switching cabinet in this embodiment has the same structure except that the installation positions of the input vacuum contactor 2, the bypass vacuum contactor 3, the output vacuum contactor 4, the input insulator 5 and the output insulator 6 in the cabinet body 1 are different from those in embodiment 1.
In this embodiment, the input vacuum contactor 2 is located at the lower end of the front part of the inner cavity of the cabinet 1, the output vacuum contactor 4 is located at the upper end of the rear part of the inner cavity of the cabinet 1, and the bypass vacuum contactor 3 is located below the output vacuum contactor 4. The upper port terminal of the input vacuum contactor 2 is connected with the input insulator 5 through a first connecting copper bar 7, the upper port terminal of the bypass vacuum contactor 3 is connected with the input insulator 5 through a second connecting copper bar 8, and the lower port terminal of the bypass vacuum contactor 3 is connected with the output insulator 6 through a third connecting copper bar 9.
Embodiment 3, as shown in fig. 8, a schematic diagram of an embodiment 3 of the automatic switching cabinet without a disconnecting switch of the present utility model is provided, and the switching cabinet in this embodiment has the same structure except that the installation positions of the input vacuum contactor 2, the bypass vacuum contactor 3, the output vacuum contactor 4, the input insulator 5 and the output insulator 6 in the cabinet body 1 are different from those in embodiment 1.
In this embodiment, the bypass vacuum contactor 3 is located at the upper end of the middle of the cabinet body 1, the input vacuum contactor 2 and the output vacuum contactor 4 are both located below the bypass vacuum contactor 3, and the input vacuum contactor 2 is located at the front end and the output vacuum contactor 4 is located at the rear end. The upper port terminal of the input vacuum contactor 2 is connected with the input insulator 5 through a first connecting copper bar 7, and the lower port terminal of the bypass vacuum contactor 3 is connected with the input insulator 5 through a second connecting copper bar 8. The upper port terminal of the bypass vacuum contactor 3 is connected with the output insulator 6 through a third connecting copper bar 9, and the upper port terminal of the output vacuum contactor 4 is connected with the output insulator 6 through a fourth connecting copper bar 25.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420151705.2U CN222441579U (en) | 2024-01-22 | 2024-01-22 | Automatic switching cabinet without isolating switch for high-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420151705.2U CN222441579U (en) | 2024-01-22 | 2024-01-22 | Automatic switching cabinet without isolating switch for high-voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222441579U true CN222441579U (en) | 2025-02-07 |
Family
ID=94413043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420151705.2U Active CN222441579U (en) | 2024-01-22 | 2024-01-22 | Automatic switching cabinet without isolating switch for high-voltage frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222441579U (en) |
-
2024
- 2024-01-22 CN CN202420151705.2U patent/CN222441579U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106410617A (en) | Bus duct power supply system | |
| CN222441579U (en) | Automatic switching cabinet without isolating switch for high-voltage frequency converter | |
| CN101882536A (en) | High-power sealed alternating current contactor | |
| CN109560496A (en) | A kind of package assembly of modular construction power supply | |
| CN222508561U (en) | Compact integrated switch device | |
| CN206359137U (en) | A kind of crane contactless control system | |
| CN105071702B (en) | Middle die block formula soft starter | |
| CN204045481U (en) | A kind of 110kV isolating switch | |
| CN207719604U (en) | A kind of dust-protection type high-tension switch cabinet | |
| CN221553117U (en) | Screen structure of high-voltage soft starter | |
| CN101692528B (en) | Cabinet structure of intelligent electric power pollution control system and configuration structure of components | |
| CN105429038B (en) | A kind of high-pressure frequency-conversion one drag two manual bypass cabinet | |
| CN222441541U (en) | Transformer cabinet with input isolation buffer | |
| CN217881298U (en) | Compact electric brake switch | |
| CN216056824U (en) | Energy storage converter | |
| CN204857561U (en) | Novel intelligence vacuum contactor | |
| CN217010070U (en) | Water-cooling power module unit | |
| JP4578273B2 (en) | Functional unit of control center and manufacturing method thereof | |
| CN217545296U (en) | Bypass cabinet | |
| CN220796501U (en) | Photovoltaic inverter direct current switch assembly structure | |
| CN118671685B (en) | A current comparator calibration circuit automatic switching device | |
| CN219576428U (en) | A multifunctional auxiliary vehicle for disassembling and assembling a circuit breaker chassis vehicle | |
| CN204857560U (en) | Intelligence vacuum contactor | |
| CN210806337U (en) | Integrated intelligent power distribution cabinet | |
| CN213242219U (en) | Hollow reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |