CN2292289Y - Multi-function electric power measuring box capable of preventing fraudulent use - Google Patents

Abstract

The utility model discloses a multi-function electric power measuring box with electricity theft prevention, provided with a cipher key lock with a large capacity. The secret code digital can be randomly compiled and arranged. Meanwhile, the utility model is also provided with a key automatic lock-out function, a times of error operation automatic recording function, a time limited password input function, and an automatic alarm function. The inner part of the utility model is also provided with a strong magnetic electricity theft preventing function, an automatic punishment metering function, and a time of electricity theft automatic recording function, etc. All the functions effectively deter various electricity theft behaviors on a metering box, reduce the electrical loss ratio, save the electric energy, and protect the benefits of country and crowd.

Description

Multi-functional thief-proof electric metering box

The utility model belongs to electric power metering device.

The power network line losses of China's power supply at present is serious, and wherein stealing electricity phenomenon is comparatively general in certain areas, and particularly the rural power grids energy loss is bigger.The electric loss rate in indivedual small towns has seriously upset the electricity consumption order up to more than 50% according to investigations, has influenced industrial and agricultural production, and national electric energy is run off, and has increased the weight of peasant's electricity consumption burden.This mainly is that some lawless persons take the multiple means stealing without restraint of committing theft on batch meter, makes power supply department hard to guard against.Though also taked some burglar-proof measures and install anti-theft arrangement additional on batch meter, it is little to produce effects.

The utility model is in order to design a kind of electric metering box of taking multiple burglar-proof measure, can effectively to stop the incident generation of stealing, reduce the electric loss rate of circuit, playing the effect of saves energy.

The utility model is design like this; Have watt-hour meter reading window on the shop front of a metal cabinet, the casing lateral surface is provided with the pulpit, and the back is provided with transformer low voltage insulator cover, is provided with watt-hour meter, mutual inductor, electromagnetic lock, lightning arrester, warning device etc. in the casing.Key is to be provided with the password key dish in the pulpit, its number of keys can arbitrarily be set, wherein part button plug joins by circuit and counter-decoder circuit input end, the part button joins by the output terminal on circuit and count decoding road in addition, these buttons reach the unlatching of cipher control electromagnetic lock or blockade automatically by pilot relays such as counter-decoder circuit, monostable circuit and amplifying circuits.In addition, magnetic field sensor is set in the casing, controls power circuit, reach the purpose of anti-strong magnetic stealing by it and amplifying circuit, relay and automatic air-break switch.If magnetic field sensor, automatic air-break switch after the relay changes tractive magnet and converter into, the may command timer reaches the strong magnetic stealing time of automatic record, can punish simultaneously compensation metering and warning certainly, simultaneously former three groups of mutual inductors are changed a social system to tapped mutual inductor is arranged, be attempted by on the converter, the action of drawing magnetism can make watt-hour meter do from punishing the compensation metering simultaneously.When blocking automatically or report to the police, circuit is provided with reset switch in addition.Design has rectifying and voltage-stabilizing feed circuit, power light, the illuminating lamp of checking meter, interior outer terminal etc. in the circuit.

With so thief-proof electric metering box, can effectively prevent various electricity filching means.Because some button is a password key on the numerical ciphers keypad of control section design, layout password figure arbitrarily, another part is pseudo-key, can block the passage of unblanking automatically.Password key can be discharged and be reached several 10,000,000,000 groups of passwords, so can't explore the unlatching password at all, has pressed any pseudo-key on the other hand as by mistake and has promptly blocked automatically.Make this lock security more reliable, also prevented to utilize the unlawful means of high-intensity magnetic field interferometer effectively simultaneously, and can carry out the punitive dosage compensation, prevented the electricity filching behavior on electric metering box effectively.

The utility model is realized by following drawings and Examples.

Fig. 1 is casing and box inner structure synoptic diagram.

Fig. 2 is casing side and pulpit structural representation.

Fig. 3 is circuit theory diagrams.

Fig. 4 is the partial wiring diagram of embodiment 1.

Fig. 5 is the partial wiring diagram of embodiment 2.

Embodiment 1: have 2 watt-hour meter reading windows on the door of the casing of making of sheet metal (1), there is pulpit (2) in the outside, after transformer low voltage insulator cover (3) is arranged.Be provided with the dead bolt hole (7) of watt-hour meter W, magnetic field sensor H, mutual inductor L, electromagnetic lock (4) and door back side correspondence in the casing (1), circuit board sealing box body (5) etc.Converter T, timer Jt, lightning arrester BL, warning device etc. also are arranged in the casing (1).Password key dish P in the pulpit (2), it is K0-K13 that 14 of password keys are set above it, resetkey K14, K15.Circuit design and running among Fig. 3 and Fig. 4 are: IC1 is the counting decoder integrated circuit, and its output terminal has the Q0Q8 termination, and is provided with 5 termination W1-W5 (number can be provided with arbitrarily) and joins by IC7 and IC1 output terminal 15.Nine plugs of K0-K8 can exchange arbitrarily between them nine row sockets should be arranged.According to the setting of password, the Q0-Q8 termination can be inserted on the corresponding socket of corresponding K0-K13 end.Can reset password as password leakage, change the connection of Q0-Q8 again.As set 198325746 passwords, and only needing the Q0-Q8 termination is inserted into respectively on the socket of No. 198325746 key wire in order and get final product, the K0, the K10-K13 that are left become " pseudo-key ".As setting 333333333 passwords again, the Q0-Q8 termination all can be inserted into No. 3 key wire sockets and get final product, the remaining K3 key that removes becomes " pseudo-key " entirely.When need are unblanked, earlier by starting button K14, the positive pulse of the monostable 1 circuit output certain width of forming by IC2-IC3 etc., through IC6 15 pin of IC1 are placed low level, make IC4 when pressing the number button successively, monostable 2 circuit that IC5 forms flip-flop number code translator IC1 successively Enter Number input end successively in order, after the last-number button is pressed, the high level of 11 pin of IC1 triggers BG1, the BG2 conducting, relay J 0 adhesive, the J0-1 closing of contact, the power supply of connection electromagnetic lock (4), dead bolt is sucked and unblank, the top of travel switch K in casing (1) door flicks simultaneously, and its normally opened contact Kx disconnects door and is opened, and electromagnetic lock (4) locking.When unblanking, as long as mistake is pinned any " pseudo-key ", will make the IC7 state turnover make 15 pin of IC1 place high level and stop counting, circuit enters blockage, at this moment press proper password again, locks also not open.If restart, must press K14, K15 key simultaneously, could unblank by proper password again.The delay circuit of forming by R1C1 determined again must by in the time that sets by careful sign indicating number, end the password input otherwise lock circuit will automatically reset.Magnetic field sensor H (the utility model is established three) is housed in casing (1) more in addition, when the burglar disturbs watt-hour meter W to run well with kicker magnet, the closed conducting of magnetic field sensor H, IC9 and BG3, BG4 conducting, relay J 2 adhesives, the closed conducting of J2-1 and start shunt opening trip coil Jx, thus automatic air-break switch DZ tripping operation reaches automatic outage purpose.

Embodiment 2: automatic circuit break function is changed into the electric metering box that has from punishing compensate function.For tapped mutual inductor is arranged, these three groups of mutual inductors are connected on Ta, Tb, the Tc group of converter T with the transformation of the way of original three groups of mutual inductor La, Lb, Lc winding, Td winding timer Jt and internal electric source, and watt-hour meter W still switches through the output terminal of parallel operation T.When no strong magnetic stealing, the La1 of mutual inductor, La2, Lb1, Lb2, Lc1, the work of Lc2 winding, watt-hour meter W normally measures.When strong magnetic stealing occurring, after magnetic field sensor H senses, relay J 2 actions, tractive magnet Jx (replacement shunt opening trip coil) action, converter T by " compressive state " warp " transition state " to " release conditions ".At this moment mutual inductor La3, La2, Lb3, Lb2, the special-purpose winding work of Lc3, Lc2, watt-hour meter W does to measure from punishing compensation, Td group work simultaneously, timer Jt record is from the time of punishing work.After strong magnetic stealing crime behavior is handled, converter T can be moved back to again " compressive state ", metering is got back in the normal condition.

When strong magnetic stealing electricity phenomenon and runin coded lock touch pseudo-key, all can give the warning circuit input signal among the embodiment 1 and 2, make loudspeaker Y send alarm sound by amplification.

Used power supply line of electric force in the case takes out in the circuit, uses through transformation rectifying and voltage-stabilizing power supply road.Be equipped with in addition except that button in the pulpit (2) and pay part power light ZD, luminous lamp switch Kw and protective tube Bx etc. check meter.Casing (1) and low pressure insulator cover (3) are made of steel plate, and its bottom surface and top have heat dissipation wind channel to guarantee that heat radiation is good.Counting decoder IC1 integrated circuit CD4017 model in the circuit, IC2-IC7 CD4001, IC8, IC9 CD4011.Relay J 0, J2 are grown register with JQC-3F, J1 with JJ-10 type electricity.When this batch meter is installed, this case is installed in low pressure end one side on the power transformer.Casing (1) bottom surface is fixed on the special stand of top cover flange edge of power transformer, the low-voltage output of transformer is by low pressure insulator cover (3) sealing, and the end face terminal of electric metering box is drawn line of electric force and used for the user.

Claims (3)

1. multi-functional thief-proof electric metering box relates to a kind of electric power metering device, on the shop front of metal cabinet (1), have watt-hour meter W reading window, casing (1) lateral surface is provided with pulpit (2), the back is provided with transformer low voltage insulator cover (3), casing is provided with watt-hour meter W in (1), mutual inductor L, the dead bolt hole (7) of electromagnetic lock (4) and door back side correspondence, circuit board sealing box body (5) etc., converter T, tractive magnet Jx, timer Jt, counter J1, magnetic field sensor H, 1 lightning arrester BL, warning devices etc. also are arranged in the casing (1), it is characterized in that:

A. be provided with password key dish P in pulpit (2), wherein the output terminal of part button and counting decoder IC1 joins, by circuit controller J0, reach the unlatching of cipher control electromagnetic lock (4), another button joins by the input end of circuit and counting decoder IC1, by circuit control counter J1 numeration with circuit is blocked automatically.

B. be provided with magnetic field sensor H in the casing (1), control power circuit, reach antimagnetic stealing purpose by it and amplifying circuit, relay J 2 and automatic air-break switch DZ.

2. electric metering box according to claim 1 is characterized in that: the number of keys on the password key dish P can arbitrarily be set, and a part of button is the numerical ciphers button, " the pseudo-key " of another part button for blocking automatically.

3. electric metering box according to claim 1, it is characterized in that: three groups of mutual inductors that three groups of mutual inductor La1, La2, Lb1, Lb2, LC1, Lc2 changed into centre tap La3, Lb3, Lc3, and be tractive magnet Jx and converter T with automatic air-break switch DZ reconfiguration, the induction of magnetic field sensor H can make converter T action, make watt-hour meter W and timer Jt work, do to punish certainly compensation and measure and write down the make-up time automatically.

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