CN2845308Y

CN2845308Y - Motor speed stabilizing and energy saving device with load matching automatically

Info

Publication number: CN2845308Y
Application number: CNU200520052020XU
Authority: CN
Inventors: 朱培立; 周小丹; 黄辉; 汪纯; 朱洋; 朱持恒
Original assignee: 朱培立; 朱洋
Priority date: 2005-09-27
Filing date: 2005-09-27
Publication date: 2006-12-06
Anticipated expiration: 2015-09-27

Abstract

The utility model relates to an electric machine speed stabilizing and energy saving device with load following automatically, which belongs to an electric machine energy saving field. The utility model is mainly used for solving the technical problems that most of the existing electric machines lie in light load condition operation, energy is not saved through unloading, power factors are low, the wastage of electric force is big, et. The utility model has the technology proposal that a power supply switch is connected with the input end of an electric energy meter of a single machine, the output end of the electric energy meter of the single machine is connected with the input end of a thyristor of a main loop and the output end of the thyristor of the main loop is connected with a motor. A current transformer is arranged on the main loop and is connected with a signaling module which is connected with an intelligent single chip machine, the intelligent single chip machine is connected with a trigger control module and the trigger control module is connected with a control pole of the thyristor of the main loop. An automatic bypass switch and an integrated protection module can also be arranged, electricity can be saved by stable speed under the condition of the electric machine light load condition, and the utility model has automatically protective functions, such as softly starting, phase failure, over current, over load, etc. The utility model has the advantages that load following performance is good, intelligence is high and alternate run and contrastive observation operation are convenient.

Description

Can be automatically with the motor speed stabilizing energy-saving appliance that carries

Technical field

The utility model relates to a kind of energy saver that is used for motor, especially can follow the motor speed stabilizing energy saver of load variations automatically.

Background technology

At present, alternating current motor operating mode over half is to move at about 50% of its design load.This light duty operation of motor, not only off-load is not energy-conservation, power wastage is big, and causes that reactive loss is big, power factor (PF) is low, and electrical network quality and power supply effect are produced considerable influence.Although more existing electric motor energy-saving techniques, majority is to solve problem by frequency control, and this device can't use under the stable situation of the rate request of load equipment.The technology of pressure regulating energy-saving also someone was used, but its year property of following owes strong, and it is low that intellectuality is owed, and it is poor that automation is owed, the difficult operation of alternate run, and the comparable data difficulty of economize on electricity is observed.

Summary of the invention

The purpose of this utility model provides that a kind of performance is good, automation is higher, alternate run is easy to operate and good energy-conserving effect can be automatically with the motor speed stabilizing energy-saving appliance that carries with carrying.

The technical scheme that its technical problem that solves the utility model adopts is: mains switch 6 connects the input of unit electric energy meter 5, the output of unit electric energy meter 5 connects the input of major loop thyristor 3, and the output of major loop thyristor 3 is connected with motor 1; Current transformer 4 is installed on major loop, and current transformer 4 is connected with signaling module 7, and signaling module 7 is connected with intelligent single-chip microcomputer 8, and intelligent single-chip microcomputer 8 is connected with trigger control module 10, and trigger control module 10 is connected with the control utmost point of major loop thyristor 3 again.

The utility model also can be at the auto by pass switch 2 of the two ends of major loop thyristor 3 parallel connection by intelligent single-chip microcomputer 8 controls.Yet can between intelligent single-chip microcomputer 8 and trigger control module 10, connect comprehensive protection module 9.

Described unit electric energy meter 5 and major loop thyristor 3, current transformer 4, signaling module 7, intelligent single-chip microcomputer 8, trigger control module 10, comprehensive protection module 9 and auto by pass switch 2 can be installed in same cabinet or the screen cabinet.

When motor 1 is single-phase motor, on major loop, connect a major loop thyristor 3.When motor 1 is threephase motor, on the three-phase phase line of major loop, connect a major loop thyristor 3 respectively.

The beneficial effects of the utility model are: it is by being serially connected with the unit electric energy meter in the major loop that connects mains switch and thyristor, motor, its control section is given intelligent single-chip microcomputer again by current transformer after the major loop up-sampling is given the signaling module processing and amplifying, the intelligence single-chip microcomputer carries out after the intelligent computing instruction triggers control module according to the variation regulation and control major loop thyristor of motor load again, makes motor not only speed stabilizing but also economize on electricity under underloading.It also can establish auto by pass switch and comprehensive protection module, can conveniently contrast protections automatically such as operation and realization soft start and the phase failure, overcurrent, overload.It is to have made full use of the gap of operation of motor actual condition and design load as the economize on electricity space, automatically follow the variation of load and adjust motor input power, realize the distribution according to need between motor load and the supply electric energy, can not change obviously economize on electricity under the situation of speed again in the motor load frequent variations.

Description of drawings

Fig. 1 is a structural principle schematic diagram of the present utility model.

Among the figure: 1. motor, 2. auto by pass switch, 3. major loop thyristor, 4. current transformer, 5. unit electric energy meter, 6. mains switch, 7. signaling module, 8. intelligent single-chip microcomputer, 9. comprehensive protection module, 10 trigger control module.

Embodiment

Embodiment 1, and mains switch 6 of the present utility model connects the input of unit electric energy meter 5, and the output of unit electric energy 5 connects the input of major loop thyristor 3, and the output of major loop thyristor 3 is connected with motor 1.Current transformer 4 is installed on major loop, current transformer 4 is connected with signaling module 7, signaling module 7 is connected with intelligent single-chip microcomputer 8 again, and intelligent single-chip microcomputer 8 is connected with trigger control module 10 again, and trigger control module 10 is connected with the control utmost point of major loop thyristor 3 again.The power supply of this device forms major loop by mains switch 6, unit electric energy meter 5, major loop thyristor 3 with motor 1; Current transformer 4 is installed on this major loop, the current transformer 4 real-time signals of gathering the motor load variation and causing main circuit current to make a variation, this signal is given intelligent single-chip microcomputer 8 after signaling module 7 processing and amplifying, intelligence single-chip microcomputer 8 carries out sending after the intelligent computing instruction to this signal again and gives trigger control module 10, makes the variation auto-control major loop thyristor 3 of trigger control module 10 according to motor 1 load.Thereby realize that the variation follow load automatically adjusts motor input power, guarantee the distribution according to need between motor load and the supply electric energy, can not change obviously economize on electricity under the situation of speed again in the motor load frequent variations.Consult Fig. 1.

Embodiment 2, and the utility model also can be connected in parallel to the auto by pass switch 2 by intelligent single-chip microcomputer 8 controls at the two ends of major loop thyristor 3.When the electricity-saving appliance operate as normal, auto by pass switch 2 normal offs, system is in power-saving running; When system broke down, intelligent single-chip microcomputer 8 control auto by pass switches 2 were connected, thereby assurance equipment continues operation by the preceding traditional mode of economize on electricity; In the time will economizing on electricity data contrast actual measurement, but manual operation " is led to ", " breaking " auto by pass switch 2, can not shut down " power-saving running " and " tradition operation " contrast that carry out arbitrary period, actual measurement and record correction data on unit electric energy meter 5.All the other consult Fig. 1 with embodiment 1.

Embodiment 3, and the utility model also can connect comprehensive protection module 9 between intelligent single-chip microcomputer 8 and trigger control module 10.When various faults such as the phase failure, overcurrent, overload occurring when system, intelligence single-chip microcomputer 8 can carry out sending after the intelligent computing instruction to fault-signal and give trigger control module 10, trigger control module 10 control major loop thyristors 3 are automatically shut down, connect auto by pass switch 2 simultaneously, not only protected equipment automatically but also kept running; Comprehensive protection module 9 also can be realized soft start by assurance equipment.All the other consult Fig. 1 with embodiment 1 or 2.

Embodiment 4; unit electric energy meter 5 of the present utility model and major loop thyristor 3, current transformer 4, signaling module 7, intelligent single-chip microcomputer 8, trigger control module 10, comprehensive protection module 9 and auto by pass switch 2 are installed in same cabinet or the screen cabinet; constitute an integral body, so that install and use.All the other consult Fig. 1 with embodiment 1,2 or 3.

Obviously, when motor 1 is single-phase motor, can on major loop, connect a major loop thyristor 3.When motor 1 is threephase motor, then can on the three-phase phase line of major loop, connect a major loop thyristor 3 respectively.

Claims

1, a kind of can be automatically with the motor speed stabilizing energy-saving appliance that carries, it is characterized in that: mains switch (6) connects the input of unit electric energy meter (5), the output of unit electric energy meter (5) connects the input of major loop thyristor (3), and the output of major loop thyristor (3) is connected with motor (1); Current transformer (4) is installed on major loop, current transformer (4) is connected with signaling module (7), signaling module (7) is connected with intelligent single-chip microcomputer (8), intelligence single-chip microcomputer (8) is connected with trigger control module (10), and trigger control module (10) is connected with the control utmost point of major loop thyristor (3) again.

2, according to claim 1 can it is characterized in that: the auto by pass switch (2) that major loop thyristor (3) two ends parallel connection is controlled by intelligent single-chip microcomputer (8) automatically with the motor speed stabilizing energy-saving appliance that carries.

3, according to claim 1 can it is characterized in that: between intelligent single-chip microcomputer (8) and trigger control module (10), connect comprehensive protection module (9) automatically with the motor speed stabilizing energy-saving appliance that carries.

4, according to claim 1 can it is characterized in that automatically with the motor speed stabilizing energy-saving appliance that carries: described unit electric energy meter (5) and major loop thyristor (3), current transformer (4), signaling module (7), intelligent single-chip microcomputer (8), trigger control module (10), comprehensive protection module (9) and auto by pass switch (2) are installed in same cabinet or the screen cabinet.

5, according to claim 1 can it is characterized in that: when motor (1) is single-phase motor, on major loop, connect a major loop thyristor (3) automatically with the motor speed stabilizing energy-saving appliance that carries.

6, according to claim 1 can it is characterized in that: when motor (1) is threephase motor, on the three-phase phase line of major loop, connect a major loop thyristor (3) respectively automatically with the motor speed stabilizing energy-saving appliance that carries.