CN2286533Y - Relay for anti-fraudulent-use of electricity - Google Patents
Relay for anti-fraudulent-use of electricity Download PDFInfo
- Publication number
- CN2286533Y CN2286533Y CN 96238724 CN96238724U CN2286533Y CN 2286533 Y CN2286533 Y CN 2286533Y CN 96238724 CN96238724 CN 96238724 CN 96238724 U CN96238724 U CN 96238724U CN 2286533 Y CN2286533 Y CN 2286533Y
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- relay
- capacitor
- electricity
- drive circuit
- diode
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Abstract
The utility model provides a relay for preventing electricity theft, which is provided with sensing elements 1 and 2. Rectification amplification circuits 3 and 4 are respectively connected with the sensing elements 1 and 2. The output ends of the rectification amplification circuits 3 and 4 are connected with a comparison drive circuit 5 of which the output end is connected with a relay J. The comparison drive circuit 5 and the relay J are all connected with a DC voltage. The utility model has the advantages of few elements, high reliability, automatic power supply cutting when the power of an electric apparatus is less than 50W due to electricity theft, and high sensitivity, and can fundamentally solve the problem of electricity theft.
Description
The utility model relates to a kind of anti-electricity-theft device, especially a kind of anti-electricity-theft relay.
Stealing has become a kind of social effects of pollution, and it has not only influenced normal power supply, Electrical Safety, and has caused serious economy loss to country, according to the statistics made by the departments concerned, because stealing, the loss of domestic life power consumption is up to 20%, therefore, solution stealing problem is extremely urgent.Be stealing, the department that the has iron-clad ammeter box that locks, the ammeter box with the user that has is contained on the outdoor electric pole, and the power supply department that has has been set up electric industry inspection troop, but these measures all can not fundamentally prevent stealing.
The purpose of this utility model provides a kind of anti-electricity-theft relay that can fundamentally solve the stealing problem.
Technical solution of the present utility model is: a kind of anti-electricity-theft relay, be provided with sensing element 1,2, be connected to rectification amplifying circuit 3,4 respectively with sensing element 1,2, the output termination of rectification amplifying circuit 3,4 is drive circuit 5 relatively, relatively the output and the relay J of drive circuit 5 are joined, and relatively drive circuit 5 and relay J are all joined with direct voltage.
Described sensing element 1,2 can be electromagnetic parameter identical two current transformer LH 1, LH2.
Two the parameter identical voltage-multiplying type rectification amplifying circuits of described rectification amplifying circuit 3,4 for being constituted by capacitor C 1-C5, diode D1-D5 and capacitor C 6-C10, diode D6-D10.
Described relatively drive circuit 5 is provided with resistance R 1, the capacitor C 11 that is in parallel with resistance R 1, the two ends of capacitor C 11 also are connected to the diode D11 that has been in series, capacitor C 12, the positive pole of the negative pole of diode D11 and capacitor C 12 joins, its phase contact connects the control utmost point of controllable silicon T, and the positive pole of controllable silicon T connects direct voltage.
The utility model is simple in structure, components and parts are few, reliability is high, and during stealing, used appliance power is cut off the electricity supply during less than 50W automatically, and is highly sensitive, can fundamentally solve the stealing problem.
Fig. 1 is the block diagram of the utility model embodiment.
Fig. 2 is the circuit theory diagrams of the utility model embodiment.
The utility model is done the description of into going up the step below in conjunction with drawings and Examples.As showing of Fig. 1: be provided with sensing element 1,2, be connected to rectification amplifying circuit 3,4 respectively with sensing element 1,2, the output termination of rectification amplifying circuit 3,4 is drive circuit 5 relatively, relatively the output and the relay J of drive circuit 5 are joined, and relatively drive circuit 5 and relay J are all joined with direct voltage.As shown in Figure 2: sensing element 1,2 is identical two current transformer LH1, LH2 of electromagnetic parameter; Two the parameter identical voltage-multiplying type rectification amplifying circuits of rectification amplifying circuit 3,4 for being constituted by capacitor C 1-C5, diode D1-D5 and capacitor C 6-C10, diode D6-D10.Relatively drive circuit 5 is provided with resistance R 1, with the resistance R 1 stomach capacitor C 11 that is in parallel, the two ends of capacitor C 11 also are connected to diode D11, the capacitor C 12 that is in series, the positive pole of the negative pole of diode D11 and capacitor C 12 joins, its phase contact connects the control utmost point of controllable silicon T, and the positive pole of controllable silicon T connects direct voltage.
Described direct voltage is to be obtained by step-down rectifying circuit, be connected to reset switch FA with AC power, after resistance R 4, capacitor C 14 step-downs, through diode D12～D15, capacitor C 13, resistance R 3 rectifying and wave-filterings, get the two ends that direct voltage+12V is connected to controllable silicon T and relay J mutually again.In the utility model embodiment, also be connected to resistance R 2, power supply indicator ED mutually.
Operation principle: the utility model embodiment in use, the normally opened contact of relay is connected in the supply line, current transformer LH1 is connected in the supply line before the power switch GK, and before another current transformer LH2 is connected to current coil WS in the kilowatt-hour meter behind the power switch GK, when the user under normal electricity consumption condition, flow through current transformer LH1, electric current in the LH2 primary winding equates, be I1=I2, the induced current i1=i2 of its secondary coil, after rectification is amplified, the voltage drop U1 that on sample resistance R1, produces, the U2 equal and opposite in direction, direction is opposite, the total voltage in resistance R 1 two ends reduces to zero, diode D11, and controllable silicon T all is in cut-off state.Relay J keeps attracting state under+12V voltage effect, its normally opened contact closure is to keep the current supply circuit continued power.When electricity filching behavior takes place when, as shown in Figure 2 load RQ is connected to ammeter before, or when load RZ is connected in the circuit, during with the coil WS short circuit of kilowatt-hour meter, then flow through the electric current I 1 ≠ 0 of current transformer LH1, LH2 primary winding and I2=0 has i1 ≠ 0, i2=0, U1 ≠ 0, U2=0 simultaneously, simultaneously, there is voltage drop at resistance R 1 two ends, polarity be last just, down negative, diode D11 conducting, controllable silicon T is triggered and conducting, the coil voltage of relay J is discharged by short circuit, its contact disjunction is cut off the electricity supply, thereby has prevented stealing.
Claims (4)
1, a kind of anti-electricity-theft relay, it is characterized in that: be provided with sensing element [1], [2], be connected to rectification amplifying circuit [3], [4] respectively with sensing element [1], [2], the output termination of rectification amplifying circuit [3], [4] is drive circuit [5] relatively, relatively the output and the relay J of drive circuit [5] are joined, and relatively drive circuit [5] and relay J are all joined with direct voltage.
2, anti-electricity-theft relay according to claim 1 is characterized in that: described sensing element [1], [2] are electromagnetic parameter identical two current transformer LH1, LH2.
3, anti-electricity-theft relay according to claim 1 and 2 is characterized in that: described rectification amplifying circuit [3], [4] two the identical voltage-multiplying type rectification of parameter amplifying circuits for being made of capacitor C 1-C5, diode D1-D5 and capacitor C 6-C10, diode D6-D10.
4, anti-electricity-theft relay according to claim 3, it is characterized in that: described relatively drive circuit [5] is provided with resistance R 1, with resistance R 1 capacitor C 11 that has been in parallel, the two ends of capacitor C 11 also are connected to the diode D11 that is in series, capacitor C 12, the positive pole of the negative pole of diode D11 and capacitor C 12 joins, and its phase contact connects the control utmost point of controllable silicon T, and the positive pole of controllable silicon T connects direct voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238724 CN2286533Y (en) | 1996-10-08 | 1996-10-08 | Relay for anti-fraudulent-use of electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238724 CN2286533Y (en) | 1996-10-08 | 1996-10-08 | Relay for anti-fraudulent-use of electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2286533Y true CN2286533Y (en) | 1998-07-22 |
Family
ID=33913953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238724 Expired - Fee Related CN2286533Y (en) | 1996-10-08 | 1996-10-08 | Relay for anti-fraudulent-use of electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2286533Y (en) |
-
1996
- 1996-10-08 CN CN 96238724 patent/CN2286533Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |