CN116995989A

CN116995989A - Multifunctional inverter device

Info

Publication number: CN116995989A
Application number: CN202310989502.0A
Authority: CN
Inventors: 王锦友; 戢卫平
Original assignee: Energiedaten Technology Shanghai Co ltd
Current assignee: Energiedaten Technology Shanghai Co ltd
Priority date: 2023-08-08
Filing date: 2023-08-08
Publication date: 2023-11-03

Abstract

The multifunctional frequency converter device comprises a power supply module, a frequency converter body, a power switch, an electric driving mechanism, a signal acquisition circuit, an application software data receiving unit, a data analysis unit, a database unit and a prompting unit, wherein the application software data receiving unit, the data analysis unit, the database unit and the prompting unit are installed in the Internet equipment; the electric driving mechanism comprises motor speed reduction equipment, a shaft rod, a rotary drum and a bearing which are arranged together, the frequency converter body is provided with a plurality of sets, a plurality of supporting plates are arranged in the circumferential direction of the rotary drum, the plurality of sets of frequency converter bodies are respectively arranged outside the supporting plates, and a power module, a power switch and a signal acquisition circuit are arranged in the electric control cabinet and are electrically connected. According to the invention, only one set of operation screen of the frequency converter is positioned at the front end opening position of the cabinet door of the electrical control cabinet, the whole cabinet door is more compact and attractive, convenience is brought to the operation and maintenance of a plurality of sets of frequency converters by workers, the remote workers can know the working conditions of the frequency converters through smart phones and the like at any time, and the workers can timely go to the site to process when abnormality occurs.

Description

Multifunctional frequency converter device

Technical Field

The invention relates to the technical field of frequency converter equipment, in particular to a multifunctional frequency converter device.

Background

A Variable-frequency Drive (VFD) is a power control device that applies a frequency conversion technique and a microelectronics technique to control an ac motor operation mode by changing a motor operation power frequency. The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detecting unit, a micro-processing unit and the like. The frequency converter adjusts the voltage and frequency of the output power supply by switching on and off the internal IGBT, provides the required power supply voltage according to the actual requirement of the motor based on the input current or voltage signal, and further achieves the aims of energy conservation and speed regulation. Along with the continuous improvement of the industrial automation degree, the frequency converter is widely applied.

In the prior art, when a plurality of sets of frequency converters are installed and used in a related area, the plurality of sets of frequency converters are generally installed in an electrical control cabinet in the related area, and for convenient operation, a display screen, an operation key and an operation interface (hereinafter collectively referred to as an operation screen) of the plurality of sets of frequency converters are respectively positioned outside a plurality of openings at the front end of the electrical control cabinet. In addition, when the plurality of sets of frequency converters are transversely positioned at the front of the electrical control cabinet and have a relatively long length, the staff can move left and right to operate the corresponding interfaces of the operation screen by the body, and inconvenience is brought to the staff more or less. Finally, the existing frequency converter does not have a monitoring function, that is to say, when the signal input by the signal input end of the existing frequency converter is abnormal or the output power supply is abnormal due to the fault of the existing frequency converter, a remote person cannot know the specific situation to handle, and in particular, in the application field of unmanned production, the normal production is adversely affected due to the fact that the fault cannot be handled in time, and the fault is amplified due to the fact that the fault cannot be handled in time after the fault exists.

Disclosure of Invention

In order to overcome the defects of the prior frequency converter application, due to the fact that the structure is limited, the invention provides the multifunctional frequency converter device which can mount a plurality of frequency converters on the rotating drum in the circumferential direction, only an operation screen of one frequency converter is positioned at the front end opening position of the electric control cabinet, the whole electric control cabinet is more compact and attractive, convenience is brought to operators in operation and maintenance of the plurality of frequency converters, input signals of the frequency converters and voltage signals of output power supplies can be acquired in real time, the remote operators can know working conditions of the frequency converters at any time, the operators can timely process the frequency converters on site when abnormality occurs, adverse effects of frequency converter faults on normal production are reduced as much as possible, and the problem that the faults are expanded due to timely processing cannot be obtained after the faults is solved.

The technical scheme adopted for solving the technical problems is as follows:

the multifunctional frequency converter device comprises a power supply module, a frequency converter body and a power switch, and is characterized by further comprising an electric driving mechanism, a signal acquisition circuit, a data receiving unit, a data analysis unit, a database unit and a prompting unit; the data receiving unit, the data analysis unit, the database unit and the prompting unit are application software installed in the Internet equipment; the electric driving mechanism comprises motor speed reduction equipment, a shaft lever, a rotary drum and a bearing, wherein the inner side of the shaft lever and the outer side of the rotary drum are installed together, the shaft lever is installed in an inner ring of the bearing, the bearing is installed in an electric control cabinet, and a power output shaft of the motor speed reduction equipment and the outer side of the shaft lever are installed together; the frequency converter body is provided with a plurality of sets, a plurality of supporting plates are arranged in the circumferential direction of the rotating drum, the plurality of sets of frequency converter bodies are respectively arranged on the outer sides of the supporting plates, and the power supply module, the power supply switch and the signal acquisition circuit are arranged in the electric control cabinet; and the multipath signal input ends of the multipath signal acquisition circuit are respectively and electrically connected with the multipath signal ends and the multipath power supply output ends of the multiple sets of frequency converters.

Preferably, the front end electrical control cabinet door of the rotary drum is provided with an opening.

Preferably, the data receiving unit can wirelessly receive the voltage or current signal input by the transducer sensor output by the signal acquisition circuit and the voltage signal of the output power supply.

Preferably, the database unit stores the voltage or current signal size which is normally input and the power supply normal voltage data which are output in the normal working state of the plurality of sets of frequency converters.

Preferably, the data analysis unit can analyze and judge the received voltage or current signal input by the transducer sensor and the output voltage signal of the power supply, and can output a trigger signal to the prompt unit when the voltage or current signal input by the transducer is too high or too low.

Preferably, the signal acquisition circuit comprises a 5G data transmission module, a bridge pile, a capacitor and a resistor which are electrically connected, wherein the positive electrode power supply output end of the bridge pile is connected with the positive electrode of the capacitor and one end of a first resistor, the other end of the first resistor is connected with one end of a second resistor and the multipath signal input end of the 5G data transmission module, and the other end of the second resistor is connected with the negative electrode of the capacitor and the negative electrode power supply input end of the 5G data transmission module.

The invention has the beneficial effects that: (1) According to the invention, a plurality of frequency converters are arranged on the rotary drum in the circumferential direction, a worker controls the motor speed reducing equipment through the power switch to drive a corresponding frequency converter to be positioned at the rear side end of the opening of the cabinet door, and only the operation screen of the frequency converter is positioned at the front end opening position of the cabinet door of the electrical control cabinet at ordinary times, so that the electrical control cabinet is compact and attractive in whole, and convenience is brought to the worker in operating and maintaining the plurality of frequency converters. (2) The signal acquisition circuit can acquire the sensor input signal of the frequency converter and the voltage signal of the output power supply in real time, remote personnel can know the working condition of each frequency converter through a smart phone and the like at any time, and when an abnormality occurs, the working personnel can timely go to the site to process, so that adverse effects of frequency converter faults on normal production are reduced as much as possible, and the problem that the faults are amplified due to the fact that the faults cannot be timely processed is prevented.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of the overall structure and a partial enlarged structure of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Detailed Description

The multifunctional frequency converter device shown in fig. 1 and 2 comprises a power supply module A1, a frequency converter body 1, a power switch S1, an electric driving mechanism, a signal acquisition circuit 2, a data receiving unit, a data analysis unit, a database unit and a prompting unit; the data receiving unit, the data analyzing unit, the database unit and the prompting unit are application software installed in the manager Internet equipment (such as a smart phone or a PC); the electric driving mechanism comprises motor speed reduction equipment M, shaft rods 3, a rotary drum 4 and bearing seats 5, wherein the two bearing seats 5 and the two shaft rods 3 are respectively and transversely welded at the middle parts of the outer ends of the left side and the right side of the rotary drum 4, the outer ends of the two shaft rods 3 are respectively and tightly sleeved in bearing inner rings of the two bearing seats 5, the two bearing seats 5 are respectively arranged at the middle parts of the left side and the right side of the left upper end in an electric control cabinet 6 through screw nuts, the left shaft rod 3 is led out outwards through holes on the left side of the electric control cabinet 6, a shell of the motor speed reduction equipment M is arranged outside the left side of the electric control cabinet 6 through the screw nuts, and the right side end of a power output shaft of the motor speed reduction equipment M and the left side of the left shaft rod 3 are welded together; the frequency converter body 1 has many sets, and rotary drum 4 circumferencial direction interval equidistance welding has many backup pads 7, and many sets of frequency converter body 1 are installed at backup pad 7 outside end through the screw nut respectively, power module A1, switch S1, multichannel signal acquisition circuit 2 are installed on the circuit board in the electrical control cabinet 6.

As shown in fig. 1 and 2, the front electrical control cabinet door of the drum 4 has a rectangular opening 61. The data receiving unit can wirelessly receive voltage or current signals input by the transducer sensor output by the signal acquisition circuit and output power supply voltage signals. The database unit stores the voltage or current signal size which is normally input and the power supply normal voltage data which is output under the normal working state of a plurality of sets of frequency converters. The data analysis unit can analyze and judge the received voltage or current signals input by the transducer sensor and the output power supply voltage signals, and can output trigger signals to the prompting unit when the voltage signals input by the transducer are too high or too low. Each path of signal acquisition circuit comprises a 5G data transmission module A3, a bridge pile A4, a capacitor C1, resistors R1 and R2 which are connected through circuit board wiring, wherein a pin 3 of a positive power supply output end of the bridge pile A4 is connected with a positive electrode of the capacitor C1 and one end of a first resistor R1, the other end of the first resistor R1 is connected with one end of a second resistor R2, one path of signal input end 4 pin of the 5G data transmission module A3, and the other end of the second resistor R2 is connected with a pin 2 of a negative power supply input end of the capacitor C1 and a negative electrode of the 5G data transmission module A3.

As shown in fig. 1 and 2, a signal input end 3 pin (with a plurality of signal input ends 3 pins) of a plurality of sets of frequency converter bodies BP (1) and a signal output end 3 pin of a plurality of sets of matched sensors A2N are connected in a plugging manner through a data line, a power input end of the plurality of sets of frequency converter bodies BP and an alternating current power supply are connected through a wire, and a power output end of the plurality of sets of frequency converter bodies BP are respectively connected with a power input end of controlled electric equipment through wires. The power input ends 1 and 2 pins of the power module A1 are connected with two poles of an alternating current 220V power supply through wires, and the power output ends 3 and 4 pins of the power module A1 are connected with the power input ends 1 and 2 pins of the power switch S1 and the power input ends 5G of the multipath signal acquisition circuit through wires, respectively, and the pins 1 and 2 of the data transmission module A3 are connected with each other through wires; the signal input end 5G of each signal acquisition circuit is connected with the positive electrode of one sensor signal input end of a corresponding set of frequency converters BP through a wire, and the power output end of each set of frequency converters BP is connected with a phase line and a zero line and the 1 and 2 pins of the bridge pile A4 of each signal acquisition circuit through wires respectively. The two paths of power output ends 3, 4 pins and 5, 6 pins of the power switch S1 are respectively connected with the positive and negative power input ends of the motor speed reduction equipment M through wires.

As shown in fig. 1 and 2, after the 220V ac power enters the power input end of the power module A1, the 3 and 4 pins of the power module A1 output 12V dc power to enter the power input end of the 5G data transmission module A3, and the module gets power. According to the invention, a plurality of sets of frequency converters 1 are arranged on a rotary drum 4 in the circumferential direction, after a worker dials a power switch S1 leftwards or rightwards, pins 1 and 2, pins 3 and 4 or pins 5 and 6 of the power switch S1 are respectively communicated, and then positive and negative positive electrode power input ends of motor speed reduction equipment M are powered on. The power output shaft of the motor speed reducing equipment M drives the rotary drum 4 and the multiple sets of frequency converter bodies 1 (BP) to rotate clockwise (not more than 360 degrees) after the power input ends of the motor speed reducing equipment M are powered on, the power output shaft of the motor speed reducing equipment M drives the rotary drum 4 and the multiple sets of frequency converter bodies 1 (BP) to rotate anticlockwise (not more than 360 degrees), and therefore the multiple sets of frequency converters BP arranged at the outer side end of the rotary drum 4 can rotate to the rear side end of the cabinet door opening 61 respectively, and workers can conveniently operate or maintain the corresponding set of frequency converters BP (the power switch S1 is turned off after the corresponding set of frequency converters BP are in place). The signal input end of the frequency converter BP inputs a signal, and meanwhile, the voltage or current signal is output to the first path of signal input end of the 5G data transmission module A3, and the 5G data transmission module A3 carries out analog-to-digital conversion on the signal and then remotely transmits the signal through a wireless mobile network. After 220V (the power voltage output by a phase line and a zero line is 220V) power output by a corresponding set of frequency converter BP enters a bridge pile A4, the bridge pile A4 converts an alternating current power supply into a direct current power supply, the direct current power supply is rectified and filtered through a capacitor C1 and then output, a direct current voltage signal is divided by resistors R1 and R2 and then is output to a second path of signal input end 4 pin of a 5G data transmission module A3, and the 5G data transmission module A3 carries out analog-to-digital conversion and then carries out remote transmission through a wireless mobile network.

As shown in fig. 1 and 2, the 5G data transmission module A3 transmits the sensor voltage or current signal in a wireless manner, or transmits the power signal output by the inverter BP, and the data receiving unit of the mobile phone or the smart phone of the related personnel can receive the voltage or current signal input by the sensor of the inverter and the output power voltage signal, then the data analysis unit analyzes and judges the received voltage or current signal input by the sensor of the inverter and the output power voltage signal in combination with the data in the database unit, when the voltage or current signal input by the inverter is too high or too low, the triggering signal can be output to the prompting unit, and the prompting unit generates the alarm signal on the display screen to prompt the related personnel that the inverter works abnormally, so that the staff can process the operation on site in time, the adverse effect of the failure of the inverter on normal production is reduced as much as possible, and the failure expansion caused by the failure which cannot be processed in time is prevented. The power supply module A1 is a power supply module for converting alternating current 220V into direct current 12V; the resistance values of the resistors R1 and R2 are 218K and 2K respectively; the capacitor C1 is a 470 mu F/25V electrolytic capacitor; bridge pile A4 is the finished product of an alternating current-to-direct current power supply module; the motor speed reduction device M is a coaxial motor gear reducer with working voltage of direct current 12V, and the rotating speed of a power output shaft of the motor speed reduction device M is 6 revolutions per minute; the model A3 of the 5G data transmission module is InDTU952 (the 5G data transmission module is provided with a plurality of signal input ends, and in practical application, a plurality of signal acquisition circuits can share one 5G data transmission module).

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The multifunctional frequency converter device comprises a power supply module, a frequency converter body and a power switch, and is characterized by further comprising an electric driving mechanism, a signal acquisition circuit, a data receiving unit, a data analysis unit, a database unit and a prompting unit; the data receiving unit, the data analysis unit, the database unit and the prompting unit are application software installed in the Internet equipment; the electric driving mechanism comprises motor speed reduction equipment, a shaft lever, a rotary drum and a bearing, wherein the inner side of the shaft lever and the outer side of the rotary drum are installed together, the shaft lever is installed in an inner ring of the bearing, the bearing is installed in an electric control cabinet, and a power output shaft of the motor speed reduction equipment and the outer side of the shaft lever are installed together; the frequency converter body is provided with a plurality of sets, a plurality of supporting plates are arranged in the circumferential direction of the rotating drum, the plurality of sets of frequency converter bodies are respectively arranged on the outer sides of the supporting plates, and the power supply module, the power supply switch and the signal acquisition circuit are arranged in the electric control cabinet; and the multipath signal input ends of the multipath signal acquisition circuit are respectively and electrically connected with the multipath signal ends and the multipath power supply output ends of the multiple sets of frequency converters.

2. The multi-function inverter apparatus of claim 1, wherein the front electrical control cabinet door of the drum has an opening.

3. The device of claim 1, wherein the data receiving unit is capable of wirelessly receiving the voltage or current signal input by the transducer sensor output by the signal acquisition circuit and the output power voltage signal.

4. The device of claim 1, wherein the database unit stores the voltage or current signal magnitude normally input and the power supply normal voltage data output in the normal operation state of the plurality of sets of frequency converters.

5. The device according to claim 1, wherein the data analysis unit is capable of analyzing and judging the received voltage or current signal input by the transducer sensor and the output voltage signal of the power supply, and outputting a trigger signal to the prompt unit when the voltage or current signal input by the transducer is too high or too low.

6. The device of claim 1, wherein the signal acquisition circuit comprises an electrically connected 5G data transmission module, a bridge stack, a capacitor, and a resistor, wherein the positive power output terminal of the bridge stack is connected to the positive electrode of the capacitor, one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, the multiple signal input terminals of the 5G data transmission module, and the other end of the second resistor is connected to the negative electrode of the capacitor, and the negative power input terminal of the 5G data transmission module.