CN2924878Y - Energy-saving power-stealing-proof distribution device - Google Patents
Energy-saving power-stealing-proof distribution device Download PDFInfo
- Publication number
- CN2924878Y CN2924878Y CN 200620092594 CN200620092594U CN2924878Y CN 2924878 Y CN2924878 Y CN 2924878Y CN 200620092594 CN200620092594 CN 200620092594 CN 200620092594 U CN200620092594 U CN 200620092594U CN 2924878 Y CN2924878 Y CN 2924878Y
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- CN
- China
- Prior art keywords
- transformer
- current detector
- motor
- electricity
- stealing
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- 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.)
- Expired - Fee Related
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Abstract
An energy-saving distribution device against electric larceny of the utility model pertains to the device against electric larceny, composed of a transformer, a current detector, an electric larceny start-up and transformer switching circuit, and a control and motor protection circuit. Wherein, the output end of the transformer is in turn connected with the electric larceny start-up and transformer switching circuit, the control and motor protection circuit and then the motor through the current detector. The motor is connected with the input end of the current detector which is respectively connected with the input end of the current detector and the transformer switching circuit. The energy-saving distribution device against electric larceny of the utility model has the advantages of reasonable design, simple structure, high sensitivity, efficient energy-saving, and reduction of the production cost.
Description
Technical field
The utility model belongs to anti-electricity-theft device, specially refers to a kind of energy-conservation anti-electricity-theft power distribution equipment.
Background technology
At present, generally adopt single-chip microcomputer or PLC that transformer is exported on the oil field and carry out irregular carry out 380 volts or 660 volts of switching controls, motor is positioned at angle star wiring and switches, though can reach anti-electricity-theft purpose, but its drawback is more: one, because of the operation in the open air for a long time of electronic components such as single-chip microcomputer and PLC, winter severe cold, the many thunderstorms of summer high temperature are very easily with its damage.Two, technical sophistication, easy-maintaining not after the damage.Three, blindly do the star angle because of motor and transformer are long-term and switch and constantly produce brave electric current of wave and switching overvoltage, make contactor etc. cause meaningless wearing and tearing, cause its life-span to descend.Four, because of transformer 660 volts of whens output, motor is in star and connects, when 380 volts of transformer outputs, motor is in corner connection, above-mentioned two kinds of operating state motors all are in overload operation.For motor, do not economize on electricity.And when 380 volts of transformer outputs, the motor star connects, and the light oil well is still available when meeting load, and when meeting the heavy load oil well, motor overload manys power consumption and easily burn motor when motor is than corner connection at this moment.Five, when motor 380 couchers are done and transformer when doing star-star connection, its winding wire must satisfy operating current, like this, must strengthen star winding wire sectional area, has increased the cost that star connects part virtually.
Summary of the invention
The utility model is intended to overcome the deficiencies in the prior art, and energy-conservation anti-electricity-theft power distribution equipment is provided.
Energy-conservation anti-electricity-theft power distribution equipment of the present utility model is made of transformer, current detector, stealing startup and transformer commutation circuit and control and motor protective circuit.Wherein, the output of transformer connects stealing startup and transformation commutation circuit, control and motor protective circuit successively, exports motor to again by current detector.Motor connects the input of current detector, and current detector links to each other with the transformer commutation circuit with the input of current detector respectively.
Described transformer is for no tap three phase windings or tap three phase windings are arranged; Current detector is to be made of current transformer; Stealing startup and transformer commutation circuit are made up of differential relay, auxiliary relay, A.C. contactor, two cycle time relay and alarm; Electric Machine Control and protective circuit are made up of the time relay, auxiliary relay, A.C. contactor and motor protecter.
Energy-conservation anti-electricity-theft power distribution equipment of the present utility model is reasonable in design, simple in structure, highly sensitive, energy savings effectively, reduced production cost.
Description of drawings
Figure of description is the structural representation of energy-conservation anti-electricity-theft power distribution equipment of the present utility model.
Embodiment
Energy-conservation anti-electricity-theft power distribution equipment of the present utility model is made of transformer 1, current detector 2, stealing startup and transformer commutation circuit 3 and control and motor protective circuit 4.Wherein the output of transformer 1 connects stealing startup and transformation commutation circuit 3, control and motor protective circuit 4 successively, exports motor 5 to again by current detector 2; motor 5 connects the input of current detector 6, and current detector 6 links to each other with transformer commutation circuit 3 with the input of current detector 2 respectively.
Wherein transformer 1 has two kinds of windings and control mode, a kind of is not have its three phase windings coiled tapped, be connected into star or angle during work, another kind is to have its three phase windings coiled tapped, be connected into star or little angle during work, change the height that the mode of connection changes output voltage with contactor, reached purpose anti-electricity-theft and economize on electricity.
Current detector 2 and 6 is made up of current transformer, and its effect is that transformer output current and motor 5 practical electric currents are carried out sampling rate, and its difference electric current is sent into stealing startup and transformer commutation circuit.
Stealing startup and transformer commutation circuit 3 are difference stealing signal enabling differential relays that instrument transformer is sent here, and contactor is made the control transformer winding, switch to change output voltage, send control signal for control and motor protective circuit.
Control and motor protective circuit 4 are to convert the control signal that stealing startup and transformer commutation circuit are sent here to the synchronous switch motor winding of transformer output voltage device, and finish the electric motor protecting function.
Oil pumper of the present utility model has highly intelligence, adopts full voltage starting to satisfy the requirement of the big detent torque of oil pumper; Be in high power save mode when normal operation, promptly supply power voltage can be lower than the rated voltage of motor, and machine operation is about 304 volts.Recording the 37KW motor through active watt-hour meter can economize on electricity about 1.5～5.5 ten thousand degree every year.Automatically switch to the full voltage full power operation when on running into oil well, loading greatly.After disappearing, big load automatically restores to power save mode again.When meeting stealing, this device transformer secondary that can automatically switch immediately, make its irregular dynamic electric voltage of output continuously, its voltage magnitude is changed to about 300 volts by 660 volts, be far smaller than present 380 volts of power supplies, simultaneously can send sound and light alarm, motor and transformer output this moment is done the switching of synchronous star angle and is realized interlock.After stealing was forced to remove, device automatically restored to the power saving operation state again.This installs no electronic component, and failure rate is low, safeguards simply, can adapt to various environment, is the integrated power distribution equipment of the real intelligent electricity anti-theft of a kind of high economize on electricity.
Claims (5)
1, energy-conservation anti-electricity-theft power distribution equipment is by transformer (1), current detector (2), stealing startup and transformer commutation circuit (3) and control and motor protective circuit (4) formation; the output that it is characterized in that transformer (1) connects stealing startup and transformation commutation circuit (3), control and motor protective circuit (4) successively, exports motor (5) to again by current detector (2); motor (5) connects the input of current detector (6), and current detector (6) links to each other with transformer commutation circuit (3) with the input of current detector (2) respectively.
2,, it is characterized in that wherein transformer (1) is no tap three phase windings or tap three phase windings are arranged as claim 1 described energy-conservation anti-electricity-theft power distribution equipment.
3,, it is characterized in that wherein current detector (2) and current detector (6) constitute by current transformer as claim 1 described energy-conservation anti-electricity-theft power distribution equipment.
4,, it is characterized in that stealing startup and transformer commutation circuit (3) be made up of differential relay, auxiliary relay, A.C. contactor, two cycle time relay and alarm as claim 1 described energy-conservation anti-electricity-theft power distribution equipment.
5,, it is characterized in that Electric Machine Control and protective circuit (4) be made up of the time relay, auxiliary relay, A.C. contactor and motor protecter as claim 1 described energy-conservation anti-electricity-theft power distribution equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620092594 CN2924878Y (en) | 2006-07-27 | 2006-07-27 | Energy-saving power-stealing-proof distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620092594 CN2924878Y (en) | 2006-07-27 | 2006-07-27 | Energy-saving power-stealing-proof distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924878Y true CN2924878Y (en) | 2007-07-18 |
Family
ID=38261305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620092594 Expired - Fee Related CN2924878Y (en) | 2006-07-27 | 2006-07-27 | Energy-saving power-stealing-proof distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924878Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779832A (en) * | 2013-11-07 | 2014-05-07 | 国家电网公司 | Electricity-stealing prevention method for low-voltage line |
-
2006
- 2006-07-27 CN CN 200620092594 patent/CN2924878Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779832A (en) * | 2013-11-07 | 2014-05-07 | 国家电网公司 | Electricity-stealing prevention method for low-voltage line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |