CN203951399U - The unloaded reduction power saver of a kind of punching apparatus - Google Patents
The unloaded reduction power saver of a kind of punching apparatus Download PDFInfo
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- CN203951399U CN203951399U CN201420368979.3U CN201420368979U CN203951399U CN 203951399 U CN203951399 U CN 203951399U CN 201420368979 U CN201420368979 U CN 201420368979U CN 203951399 U CN203951399 U CN 203951399U
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Abstract
The utility model discloses the unloaded reduction power saver of a kind of punching apparatus, described punching apparatus comprises asynchronous motor, described asynchronous motor connects three-phase circuit, on described asynchronous motor, be provided with power factor sample circuit, each of described three-phase circuit is respectively arranged with controllable silicon on mutually, described controllable silicon triggers by corresponding thyristor gating circuit, and described power factor sample circuit connects comparison circuit, and described comparison circuit connects respectively thyristor gating circuit.The unloaded reduction power saver of punching apparatus of the present utility model is by the power factor of power factor sample circuit Real-time Obtaining asynchronous motor operation, then this power factor is outputed to comparison circuit, by comparison circuit and preset value relatively after, send signal and trigger thyristor gating circuit, adjust the silicon controlled angle of flow, thereby the terminal voltage, input current and the power factor that change asynchronous motor, make asynchronous motor operate in optimum state, reaches economize on electricity object.
Description
Technical field
The utility model relates to the unloaded reduction power saver of a kind of punching apparatus.
Background technology
Generally, when asynchronous motor moves under full load condition, its electromechanical conversion efficiency is greater than 85%, but when asynchronous motor moves under Light Condition, its electromechanical conversion efficiency can be low to moderate below 20%.Modern circuit engineering development rapidly, can easily detect the power factor of asynchronous motor by instrument or testing circuit, shows after deliberation: under no-load running state, the power factor of asynchronous motor is often lower than the power factor under normal operating condition.Low power factor operation is the main cause of asynchronous motor waste electric energy.
When punching apparatus is normally worked idle time many, every equipment is to waste in vain electricity when unloaded, therefore, if reduce the energy consumption of punching apparatus when unloaded, can reach the effect of economize on electricity environmental protection.But while normally moving due to punching apparatus, must guarantee that motor reaches rated speed and just can not affect the quality of output and product, and frequency converter is to economize on electricity by changing the frequency-adjustable speed-adjustable of motor, so punching apparatus is not suitable for the economize on electricity of frequency converter frequency modulation reduction of speed.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide the unloaded reduction power saver of a kind of punching apparatus, the energy consumption while reducing punching apparatus zero load, the effect of realization economize on electricity environmental protection.
The technical scheme that the utility model adopts is:
The unloaded reduction power saver of a kind of punching apparatus, described punching apparatus comprises asynchronous motor, described asynchronous motor connects three-phase circuit, on described asynchronous motor, be provided with power factor sample circuit, each of described three-phase circuit is respectively arranged with the controlled controllable silicon of the angle of flow on mutually, described controllable silicon triggers switching state by corresponding thyristor gating circuit respectively, described power factor sample circuit connects comparison circuit, described comparison circuit connects respectively thyristor gating circuit, when the power factor of asynchronous motor during lower than comparison circuit preset value comparison circuit send signal and trigger thyristor gating circuit.
Further, on described three-phase circuit, be provided with step-down rectifying circuit, described step-down rectifying circuit connects respectively thyristor gating circuit, comparison circuit, power factor sample circuit provides working power.
Further, under described controlled silicon conducting state, the operating voltage of three-phase circuit is 380V, and under described controllable silicon blocking state, the average voltage of three-phase circuit is 290V.
The beneficial effects of the utility model are:
The unloaded reduction power saver of punching apparatus of the present utility model is by the power factor of power factor sample circuit Real-time Obtaining asynchronous motor operation, then this power factor is outputed to comparison circuit, by comparison circuit and preset value relatively after, send signal and trigger thyristor gating circuit, adjust the silicon controlled angle of flow, thereby the terminal voltage, input current and the power factor that change asynchronous motor, make asynchronous motor operate in optimum state, reaches economize on electricity object.When asynchronous motor moves under Light Condition, the silicon controlled angle of flow reduces, controllable silicon only allows a part for the positive half cycle of supply voltage and negative half period to supply with asynchronous motor, result is to have reduced the magnitude of voltage of supplying with asynchronous motor, thereby reduced the input current of asynchronous motor, improve power factor, thereby improved the efficiency of asynchronous motor, saved electric energy.
Voltage-reducing and electricity-saving when the unloaded reduction power saver of punching apparatus of the present utility model detects punching apparatus zero load, motor rated speed is constant, can not affect the quality of output and product, and this specific character is suitable for the equipment such as punch press most.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
With reference to Fig. 1, the utility model provides a kind of punching apparatus unloaded reduction power saver, described punching apparatus comprises asynchronous motor 1, described asynchronous motor 1 connects three-phase circuit, on described asynchronous motor 1, be provided with power factor sample circuit 2, each of described three-phase circuit is respectively arranged with the controlled controllable silicon of the angle of flow 3 on mutually, described controllable silicon 3 triggers switching state by corresponding thyristor gating circuit 4 respectively, described power factor sample circuit 2 connects comparison circuit 5, described comparison circuit 5 connects respectively thyristor gating circuit 4, when the power factor of asynchronous motor 1 during lower than comparison circuit 5 preset value comparison circuit 5 send signal and trigger thyristor gating circuit 4 actions.
On described three-phase circuit, be provided with step-down rectifying circuit 6, described step-down rectifying circuit 6 connects respectively thyristor gating circuit 4, comparison circuit 5, power factor sample circuit 2, and provides working power for foregoing circuit.
The unloaded reduction power saver of punching apparatus of the present utility model is by the power factor of power factor sample circuit 2 Real-time Obtaining asynchronous motor 1 operations, then this power factor is outputed to comparison circuit 5, by comparison circuit 5 and preset value relatively after, send signal and trigger thyristor gating circuit 4, adjust the angle of flow of controllable silicon 3, thereby the terminal voltage, input current and the power factor that change asynchronous motor 1, make asynchronous motor 1 operate in optimum state, reaches economize on electricity object.When asynchronous motor 1 moves under Light Condition, the angle of flow of controllable silicon 3 reduces, 3 of controllable silicons allow a part for the positive half cycle of supply voltage and negative half period to supply with asynchronous motor 1, result is to have reduced the magnitude of voltage of supplying with asynchronous motor 1, thereby reduced the input current of asynchronous motor 1, improve power factor, thereby improved the efficiency of asynchronous motor 1, saved electric energy.Same the power 7.5KW punching apparatus of take is example, in same product and output situation, carry out repeatedly contrast test, the unloaded reduction power saver of punching apparatus is not installed, and to measure average data be that electric moter voltage is that 385V, electric current are that 12.1A, actual measurement active power are 1.85KW; Average data while measuring voltage-reducing and electricity-saving after the unloaded reduction power saver of installation punching apparatus is that electric moter voltage is that 290V, electric current are that 6.7A, actual measurement active power are 1.35KW.The unloaded reduction power saver of punching apparatus is installed than electricity-saving appliance economize on electricity 27% is not installed, this is the result for the actual production test of this equipment, if punch press is more idle time, power savings can be better so, otherwise power savings can differ from.
The unloaded reduction power saver of punching apparatus of the present utility model is the principle that triggers voltage-reducing and electricity-saving when empty load of motor being detected, frequency converter is mainly the principle of economizing on electricity by frequency-adjustable speed-adjustable, the unloaded reduction power saver of punching apparatus and frequency converter electricity principle and purposes are all different, can not mutually replace.The unloaded reduction power saver of punching apparatus is when voltage-reducing and electricity-saving, motor rated speed is constant, can not affect the quality of output and product, this specific character is suitable for the equipment such as punch press most, made up frequency converter cannot the punching press of hardware industry, stretching, polishing, etc. the application on equipment blank.
These are only preferential execution mode of the present utility model, as long as within the technical scheme that realizes the utility model object with basic identical means all belongs to protection range of the present utility model.
Claims (3)
1. the unloaded reduction power saver of a punching apparatus, described punching apparatus comprises asynchronous motor (1), described asynchronous motor (1) connects three-phase circuit, on described asynchronous motor (1), be provided with power factor sample circuit (2), it is characterized in that, each of described three-phase circuit is respectively arranged with the controlled controllable silicon of the angle of flow (3) on mutually, described controllable silicon (3) triggers switching state by corresponding thyristor gating circuit (4) respectively, described power factor sample circuit (2) connects comparison circuit (5), described comparison circuit (5) connects respectively thyristor gating circuit (4), when the power factor of asynchronous motor (1) during lower than comparison circuit (5) preset value comparison circuit (5) send signal and trigger thyristor gating circuit (4).
2. the unloaded reduction power saver of a kind of punching apparatus according to claim 1, it is characterized in that: on described three-phase circuit, be provided with step-down rectifying circuit (6), described step-down rectifying circuit (6) connects respectively thyristor gating circuit (4), comparison circuit (5), power factor sample circuit (2) provides working power.
3. the unloaded reduction power saver of a kind of punching apparatus according to claim 2, it is characterized in that: under described controllable silicon (3) conducting state, the operating voltage of three-phase circuit is 380V, under described controllable silicon (3) blocking state, the average voltage of three-phase circuit is 290V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368979.3U CN203951399U (en) | 2014-07-04 | 2014-07-04 | The unloaded reduction power saver of a kind of punching apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368979.3U CN203951399U (en) | 2014-07-04 | 2014-07-04 | The unloaded reduction power saver of a kind of punching apparatus |
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| Publication Number | Publication Date |
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| CN203951399U true CN203951399U (en) | 2014-11-19 |
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| CN201420368979.3U Active CN203951399U (en) | 2014-07-04 | 2014-07-04 | The unloaded reduction power saver of a kind of punching apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037175A (en) * | 2021-04-15 | 2021-06-25 | 潘承业 | Three-phase asynchronous motor, control device and control method |
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2014
- 2014-07-04 CN CN201420368979.3U patent/CN203951399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037175A (en) * | 2021-04-15 | 2021-06-25 | 潘承业 | Three-phase asynchronous motor, control device and control method |
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