CN2031099U - "resonant mutual-inductance" series current inducting type power-saving electricity meter - Google Patents
"resonant mutual-inductance" series current inducting type power-saving electricity meter Download PDFInfo
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- CN2031099U CN2031099U CN 88211312 CN88211312U CN2031099U CN 2031099 U CN2031099 U CN 2031099U CN 88211312 CN88211312 CN 88211312 CN 88211312 U CN88211312 U CN 88211312U CN 2031099 U CN2031099 U CN 2031099U
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- hour meter
- kilowatt
- current
- load
- mutual inductor
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Abstract
The utility model discloses an energy saving kilowatt-hour meter which is a new style energy saving and metering tool in electric energy measurement. The energy saving kilowatt-hour meter is composed of two resonant current mutual inductors and a current coil which are connected in series. One mutual inductor and the current coil form the driver of the meter. The other mutual inductor is used as a dampener. The kilowatt-hour meter does not need to be provided with a voltage coil. The kilowatt-hour meter and a load work by a series system and the kilowatt-hour meter is controlled by the load. When no load is arranged, no current occurs, and the kilowatt-hour meter does not consume power. The kilowatt-hour meter adopts the technique of 'resonant current mutual inductance' and the electromagnetic damper. The sensitivity and the precision are higher. The kilowatt-hour meter is not affected by the fluctuation of a network voltage.
Description
The present invention is a kind of energy-saving kilowatt-hour meter, is a kind of novel, watt-hour meter with energy-conserving action for saving that useless power consumption is created in the existing watt-hour meter.Structurally diverse a kind of novel with existing various watt-hour meter, induction by current formula metering outfit.
Known to the applicant, existing watt-hour meter comprises " energy-conservation " watt-hour meter, and structure is all identical.The long-term cross-over connection of one potential winding is arranged in electrical network in this kind structure, whether no matter load arranged, this coil all will consume certain electric energy." energy-conservation " table can be to manage to control this coil not power consumption when non-loaded.Structure to former table does not make any changes.Though controlled the power consumption of potential winding.But increased the power consumption of control device, and the more former table power consumption of the device power consumption that has is also big.
The present invention is different with above-mentioned each method.He starts with from the structure of table itself, adopts the series circuit technology, removes the parallel circuit in the existing watt-hour meter.The structure of existing watt-hour meter is changed fully, with load be connected in series in electrical network and controlled by load, so not power consumption when non-loaded reaches " energy-conservation " purpose.
The present invention is mainly by two " resonance current mutual inductors ", and a current coil is formed.Adopt series circuit technology and load with going here and there in electrical network.Because of resistance minimum, so electric current depends primarily on load.Wherein current transformer and current coil are formed the driver in the table, and induction produces torque to rotating disk jointly for they.But the M that square is directly proportional of this torque and load current
Change=KI
2For rotating disk is rotated linearly by load current, be used to produce damping torque so need establish a current transformer in addition.This damping torque M that is directly proportional with the product of rotating speed and load current
Resistance=K
ResistanceNI.When two torque balances, just can obtain the linear relationship that rotating speed is directly proportional with electric current.The strict establishment of this relation is not subjected to the influence of mains fluctuations.
" the resonance current mutual inductor " that the present invention is used.It is the resonant electromagnetic coupling mechanism of a parallel connection.Its elementary string in meter circuit, secondary is antiresonant circuit.When the elementary load current that passes to, can form a faint magnetic field.Secondary is resonance, so will respond to a higher resonance potential.And its Q value also will change with the variation of load.Make that electromagnetic action is strengthened greatly when little load, thereby improved sensitivity.Because of Q value step-down, induced voltage is also low when heavy load.Thereby guarantee the safety when big electric current.Because of antiresonant circuit impedance maximum, the electric current minimum helps energy-conservation.
Characteristics of the present invention are simple in structure, power consumptive province, not power consumption when non-loaded, cost is not high, technology is simple.
Structure is seen accompanying drawing: 1. shell; 2. aluminium matter fixed mount; 3. low-resistance integrator; 4. low-resistance transmission worm and gear; 5. lightweight low rotor inertia rotating disk; 6. drive " resonance current mutual inductor " electromagnet; 7. drive current coil electromagnetism iron; 8. damping " resonance current mutual inductor " electromagnet; 9. the damping permanent magnet surely weighs; 10,11. high pressure resonant capacitances; 12,13. turntable shaft bearings.14,15. " resonance current mutual inductor " coil; 16. current coil; 17. terminal box; 18. sensitivity adjustment coil; 19. binding post.
To realize preferably the present invention, measure and points for attention below suggestion is adopted.
One, the magnetic field intensity when improving weak current should adopt the permeability magnetic material of high magnetic capacity, and such as cold-reduced silicon sheet, beryllium is alloy sheet etc. not. Electromagnet adopts C shape structure, is beneficial to reduce leakage field and shunting, and is saturated when preventing big electric current, suitably increases C shape mouth distance with the cushioning paper disk method.
Two, to further reduce the rotary inertia of rotating disk. Rotating disk such as the accompanying drawing of edge conduction intermediate insulation adopted in suggestion, is beneficial to strengthen the interaction in eddy current and magnetic field.
Three, manage as much as possible to reduce the frictional resistance that respectively rotates contact.
Four, what is more important must adopt exclusive technology of the present invention." resonance current mutual inductance " technology.Present technique is by realizing that the present invention is indispensable.
Five, the present invention is in series because of many coils are arranged, and its total resistance can not be underestimated.Reduce operating power consumption for reducing its resistance.Should preferentially use thicker lead or high-quality lead as much as possible.To note during wiring turning to.
" resonance current mutual inductor ", elementary usefulness＞φ 1.5mm lead is around 40～60 circles.Secondary φ 0.11～0.20mm lead of using is around 4000～6000 circles.(this line footpath can not be greater than 0.20, otherwise burns too greatly because of electric current.The following table of 2A is intended the lead coiling with φ 0.18～φ 0.20, and 2A is above to intend the lead coiling with φ 0.16～φ 0.18 to the following table of 5A, and the above table of 5A is intended with the lead coiling below 0.16) its inductance value must not＜2 henries.The humorous 2 μ～5 μ F that join, withstand voltage 〉=500 volt high pressure electrodeless electric capacity, parallel resonance is on the 50HZ power frequency.Current coil should adopt thicker high-quality lead around 80～100 circles.And on this electric current magnet the short-circuited coil around about 10 circles in addition, in order to the sensitivity of fine setting rotating disk.The permanent magnetic field of magnets intensity of damping should be looked the sensitivity requirement of table.Suitably reduce.
Claims (3)
1, a kind of energy-saving kilowatt-hour meter, by two resonance current mutual inductors, a current coil is formed, it is characterized in that they are connected mutually, wherein mutual inductor and current coil are formed driver, the another mutual inductor is alone a damper, and load can be series at any position between them.
2, by the described energy-saving kilowatt-hour meter of claim 1, it is characterized in that the inductive iron core of resonance mutual inductor and current coil can be C shape, U-shaped or other Any shape.
3, by the described energy-saving kilowatt-hour meter of claim 1, it is characterized in that the resonance mutual inductor can be double winding or many windings, wherein one group is resonant circuit in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211312 CN2031099U (en) | 1988-01-05 | 1988-01-05 | "resonant mutual-inductance" series current inducting type power-saving electricity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88211312 CN2031099U (en) | 1988-01-05 | 1988-01-05 | "resonant mutual-inductance" series current inducting type power-saving electricity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031099U true CN2031099U (en) | 1989-01-18 |
Family
ID=4844723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88211312 Pending CN2031099U (en) | 1988-01-05 | 1988-01-05 | "resonant mutual-inductance" series current inducting type power-saving electricity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880591A (en) * | 2015-06-19 | 2015-09-02 | 孙铭悦 | TV disconnection electric energy measuring recalling device |
-
1988
- 1988-01-05 CN CN 88211312 patent/CN2031099U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880591A (en) * | 2015-06-19 | 2015-09-02 | 孙铭悦 | TV disconnection electric energy measuring recalling device |
| CN104880591B (en) * | 2015-06-19 | 2018-01-09 | 孙铭悦 | TV broken string electric energy metricals recollect device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| WD01 | Invention patent application deemed withdrawn after publication |