CN2280911Y - Multifunction electri meter - Google Patents

Abstract

The utility model belongs to a metering device for power distribution, particularly a multifunctional electric meter. The utility model adopts a control circuit component which is arranged in an ordinary electric meter. The control circuit component is composed of a switch circuit, a sampling circuit, a front amplifier, and a drive circuit. The utility model has the functions of electricity theft after table prevention, technical electricity theft prevention, over voltage prevention, and over current protection, metering, and resetting, stable electrical performance in electrical network, high reliability, high sensitivity, and high metering precision.

Description

Multi-function watt-hour meter

The utility model belongs to the measuring apparatus of power distribution.Particularly a kind of multi-function watt-hour meter.

Electric power resource is the dominant force of national economy, under the situation of power supply shortage, safety utilization of electric power and anti-electricity-theftly become the task of top priority, because have only safety utilization of electric power could guarantee the safety of personal property, develop the productivity, and electricity filching behavior belongs to the theft state-owned assets, and every year, electric energy was free in a large number to be stolen, and causes immeasurable loss to development and national economy.Yet solution stealing, particularly technology stealing are urgent problems.To fundamentally stop electricity filching behavior, can only adopt the technological means of science to solve.

In view of this, the purpose of this utility model is to be that body is for a kind of metering, security personnel, thief-proof and multi-function watt-hour meter of resetting of integrating.The utlity model has anti-table back stealing, technology stealing and anti-overvoltage, overcurrent protection function, metering, reset function, it is stable to be used for the electrical network electric property, and good reliability is highly sensitive, accurate measurement.

The purpose of this utility model realizes by following technology, and multi-function watt-hour meter is control circuit assembly of device in common electrical kilsyth basalt W, and the control circuit assembly is by on-off circuit 7, sample circuit 9, and prime amplifier 10, driving circuit 11 is formed.Its basic functional principle such as block diagram 4, wherein 6 is civil power, and W is a watt-hour meter, and 8 is electrical appliance.

In the control circuit assembly, prevent overvoltage, overcurrent, the sample circuit of electric leakage and stealing is by resistance R ₁, R ₂, R ₃, R ₄, R ₅, R ₆, R ₁₂And capacitor C ₂, C ₃, C ₅, C ₆, C ₇And mutual inductor T ₁, T ₂, diode D ₁, D ₂, D ₆, D ₇Form, prime amplifier is by triode BG ₁And resistance R ₇, R ₈Form, driving circuit is by resistance R ₁₁, R ₉, triode BG ₃, BG ₄With diode D ₂Capacitor C ₄Form, on-off circuit is made up of relay J.

Below in conjunction with accompanying drawing structure of the present utility model is done further detailed description.

Fig. 1 is the utility model table inner structure synoptic diagram.

Fig. 2 is the utility model circuit diagram.

Fig. 3 is the utility model control circuit solid-state component structural drawing.

Fig. 1 is embodiment of the present utility model.With reference to Fig. 1, control circuit solid-state component 1 is fixed in the watt-hour meter casing 3 by transducer bracket 2, and the sample circuit in the control circuit is by resistance R ₁, R ₂, R ₃, R ₄, R ₅, R ₆, R ₁₂And capacitor C ₂, C ₃, C ₅, C ₆, C ₇And mutual inductor T ₁, T ₂Form diode D ₁, D ₂, D ₆, D ₇Form, prime amplifier is by triode BG ₁, and resistance R ₇, R ₈, triode BG ₃, BG ₄With diode D ₂, capacitor C ₄Form, on-off circuit is made up of relay J.The control circuit board 4 of above-mentioned electronic devices and components assembling is used epoxy resin, and the filler 5 that Cab-O-sil, hardening agent are modulated into is packaged into solid-state component 1, helps improving the stability and the reliability of electrical equipment.

During use, the normal operating conditions sample circuit is inoperative, at this moment, and BG ₁Place's idle state, driving circuit R ₁₁, R ₉And BG ₃, BG ₄And D ₂, C ₄The switch J that is controlled is in conducting state, guarantees the operate as normal of electricity consumption.

When electricity consumption is in abnormality, as overvoltage takes place, overcurrent, on electric leakage and the watt-hour meter or table back stealing situation, sample circuit work is by BG ₁Provide signal through R ₇, R ₈And BG ₁, sampled signal is amplified, promote driving circuit R ₁₁, R ₉, BG ₃, BG ₄, D ₂, C ₄Work is worked by the relay J of driving circuit control, cuts off power supply; play the effect of protection security appliance and personal safety; can prevent the behavior of technology stealing effectively, after above-mentioned abnormality was eliminated, circuit was through 8-10 automatic recovery of power supply time delay second.

Claims (3)

1, multi-function watt-hour meter is characterized in that, control circuit solid-state component 1 is fixed in the watt-hour meter casing 3 by transducer bracket 2.

2, multi-function watt-hour meter according to claim 1 is characterized in that, the sample circuit in the control circuit is by resistance R ₁, R ₂, R ₃, R ₄, R ₅, R ₆, R ₁₂And capacitor C ₂, C ₃, C ₅C ₆, C ₇And mutual inductor T ₁, T ₂Form diode D ₁, D ₂, D ₆, D ₇Form, prime amplifier is by triode BG ₄, and resistance R ₇, R ₈, triode BG ₃, BG ₄With diode D ₂, capacitor C ₄Form, on-off circuit is made up of relay J.

3, multi-function watt-hour meter according to claim 1 is characterized in that, uses epoxy resin by the control circuit board 4 of electronic devices and components assembling, and the filler 5 that Cab-O-sil, hardening agent are modulated into is packaged into solid-state component 1.

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