CN203616388U

CN203616388U - ANSI-standard single-phase electric energy meter of S-type structure

Info

Publication number: CN203616388U
Application number: CN201320792389.9U
Authority: CN
Inventors: 杨永江; 陈涌
Original assignee: Wasion Group Co Ltd
Current assignee: Wasion Group Co Ltd
Priority date: 2013-12-06
Filing date: 2013-12-06
Publication date: 2014-05-28
Anticipated expiration: 2023-12-06

Abstract

The utility model discloses an ANSI-standard single-phase electric energy meter of an S-type structure. The electric energy meter comprises a pedestal, an inner box, an upper box and an end cap with a lens which are mounted successively, wherein a logic board is mounted on the inner box, and provided with a detection button; a TWACS communication circuit board is mounted between the inner box and the logic board; the logic board comprises a power circuit and a meter metering management circuit; the power circuit comprises a transformer and a rectification circuit, the transformer includes two secondary output paths and one self-coupling output path, and the power circuit is connected with the meter metering management circuit, the TWACS communication circuit board and a relay to supply power; the relay is provided with a signal cable and connected with the meter metering management circuit via the signal cable; UART serial port communication is implemented between the TWACS communication circuit board and the meter metering management circuit via a flat wire; and the detection button is mounted at the side surface of the logic board. According to the utility model, TWACS communication technology can be built in the ANSI-standard product of the S-type structure.

Description

Ansi standard S-type structure single-phase electric energy meter

Technical field

The utility model belongs to electric energy meter field, relates in particular to a kind of ansi standard S-type structure single-phase electric energy meter.

Background technology

At present, the electric energy meter of the built-in TWACS communication technology has been developed many moneys, but mostly based on IEC standard.Now be introduced as an example of a kind of single-phase electric energy meter of IEC standard of the built-in TWACS communication technology example, the integral structure layout of this electric energy meter meter as shown in Figure 9, it mainly comprises logic card A, power panel B, relay C, current transformer D, end box E and table meter terminal row F, TWACS telecommunication circuit realizes the communication connection between it with being placed in a logic card A and in this logic card A, composition light current unit with table meter measuring control circuit; For TWACS telecommunication circuit provides the power panel B of power supply to be placed on separately in end box E with table meter measuring control circuit, form forceful electric power unit together with relay C; Table meter terminal row F is arranged on end box E below, for installation parts such as relay C, power panel B, logic card A in table meter provides sufficient space.The circuit of this electric energy meter illustrates as shown in figure 10, and the transformer with two-way output and mu balanced circuit composition power circuit, be together placed on power panel with control relay circuit.In logic card, between table meter measuring control circuit and TWACS telecommunication circuit, carry out UART serial communication by triode voltage-regulating circuit.

Because shape and the physical dimension of his-and-hers watches meter in ansi standard have strict requirement, above table meter is not meet ansi standard, the TWACS communication technology cannot be applied to the country that uses ansi standard electrical network, as the U.S., Mexico, Dominica etc.

Utility model content

The purpose of this utility model is to provide a kind of ansi standard S-type structure single-phase electric energy meter that can realize TWACS communication function.

This ansi standard S-type structure single-phase electric energy meter that the utility model provides, comprise the base of installing successively, inner box, upper box and the end cap with lens, some current transformers and some relays are installed on described base, on described inner box, logic card is installed, on described logic card, be provided with detection button, one TWACS communication board is also installed between described inner box and logic card, described logic card comprises power circuit and table meter measuring control circuit, described power circuit comprises a transformer with the self coupling output of two-way secondary output He Yi road, rectification circuit, described power circuit is counted measuring control circuit with table respectively, TWACS communication board is connected with relay carries out power supply supply, described relay is provided with signal cable and is connected with table meter measuring control circuit by it, between described TWACS communication board and table meter measuring control circuit, carry out UART serial communication by flat wire, described detection button is arranged on the side of logic card.

For making connection of the present utility model more easy, described power circuit is connected and carries out power supply supply with TWACS communication board by flat wire.

For making communication of the present utility model more reliable, the socket of described TWACS communication board is selected cattle horn socket form.

For each device on base in the mode of connection of FORM2S or FORM12S has enough placement spaces, two current transformers and two relays are installed on described base, and the alternative arrangement that each described relay is relative is also connected with current transformer respectively on base.

For each device on base in the mode of connection of FORM1S has enough placement spaces, two current transformers and a relay are installed on described base, a current bar is also installed, and what described relay was staggered with current bar is arranged on base and is connected with current transformer respectively.

The utility model by adopting three layers of design in one-piece construction, wherein top layer is logic card, middle layer is TWACS communication board, the bottom is relay and current transformer sampling section, can meet the strict restriction of ansi standard S-type structure electric energy meter meter in shape and size completely.The utility model is simple in structure, practical, has realized the possibility of the built-in TWACS communication technology in ansi standard S-type infrastructure product.

Accompanying drawing explanation

Fig. 1 is complete machine structure schematic diagram one of the present utility model.

Fig. 2 is complete machine structure schematic diagram two of the present utility model.

Fig. 3 is complete machine structure schematic diagram three of the present utility model.

Fig. 4 is electrical block diagram of the present utility model.

Fig. 5 is the utility model TWACS communication board and table meter measuring control circuit interface schematic diagram.

Fig. 6 is the structural representation that detects button on the utility model logic card.

Fig. 7 is the circuit connection diagram one that detects button on the utility model logic card.

Fig. 8 is the circuit connection diagram two that detects button on the utility model logic card.

Fig. 9 is the one-piece construction schematic diagram of prior art IEC standard single-phase electric energy meter.

Figure 10 is the electrical block diagram of prior art IEC standard single-phase electric energy meter.

Embodiment

Can find out from Fig. 1 to Fig. 3, this ansi standard S-of the utility model type structure single-phase electric energy meter, comprise base 1, inner box 2, upper box 3 and the end cap with lens 41 4 installed successively, some current transformers 5 and some relays 6 are installed on base 1, logic card 7 is installed on inner box 2, a TWACS communication board 8 is installed between inner box 2 and logic card 7.

As can be seen from Figure 4, logic card 7 of the present utility model comprises power circuit and table meter measuring control circuit, power circuit comprises a transformer with the self coupling output of two-way secondary output He Yi road, rectification circuit, power circuit is counted measuring control circuit with table respectively, TWACS communication board 8 is connected and carries out power supply supply with relay 6, relay 6 is provided with signal cable and is connected with table meter measuring control circuit by it, between TWACS communication board 8 and table meter measuring control circuit, carry out UART serial communication by flat wire, physical interface as shown in Figure 5, the communication protocol of the two is undertaken by the peculiar technology of TWACS.

As can be seen from Figure 6, on the side of the utility model logic card 7, be provided with and detect button 71, the lens of opening that are used for realizing in ANSI structure detect, its circuit connects as shown in Figure 7 and Figure 8, wherein the K1+ of Fig. 8 is connected with the K1-of Fig. 7 by looper socket JPE3, and wherein the K2+ of Fig. 8 is connected with the K2-of Fig. 7 by looper socket JPE3.

In the utility model, power circuit is connected and carries out power supply supply with TWACS communication board 8 by flat wire, and the socket of TWACS communication board 8 is selected cattle horn socket form.

It can also be seen that from Fig. 1, two current transformers 5, relay 6 and a current bar 9 are installed on the utility model base 1, relay 6 and staggered being arranged on base 1 and being connected with current transformer 5 respectively of current bar 9.

It can also be seen that from Fig. 2 and Fig. 3, two current transformers 5 and two relays 6 are installed on the utility model base 1, the alternative arrangement that each described relay 6 is relative is also connected with current transformer 5 respectively on base 1.

In concrete utilization of the present utility model, logic card is realized the functions such as demonstration, communication, measuring control, Control; The function of measuring such as the just anti-phase meritorious metering of table meter measuring control circuit support, requirement detection, take FM6521 as kernel processor chip, carry out current signal measurement by current transformer, carry out voltage measurement by divider resistance chain form.This mode can contain the mode of connection such as FORM1S, FORM2S, FORM12S in ansi standard in the situation that not considering phase place angle simultaneously; Table meter measuring control circuit communicates by absorption type near infrared or TWACS telecommunication circuit and external management system, to complete the operation such as data reading system, Control.

Because the maximum current of table meter design is 100A, we select relay and two current transformers (as shown in Figure 1) that Imax is 100A that a maximum current is 120A, to adapt to the mode of connection requirement of FM1S; Or select two relay and two current transformers (as shown in Figure 2) that Imax is 100A that maximum current is 120A, to adapt to the mode of connection requirement of FM2S; Or select two relay and two current transformers (as shown in Figure 3) that Imax is 100A that maximum current is 120A, to adapt to the mode of connection requirement of FM12S.

Claims

1. an ansi standard S-type structure single-phase electric energy meter, comprise the base (1) of installing successively, inner box (2), the end cap (4) of upper box (3) and band lens (41), some current transformers (5) and some relays (6) are installed on described base (1), logic card (7) is installed on described inner box (2), on described logic card (7), be provided with and detect button (71), it is characterized in that: a TWACS communication board (8) is also installed between described inner box (2) and logic card (7), described logic card (71) comprises power circuit and table meter measuring control circuit, described power circuit comprises a transformer with the self coupling output of two-way secondary output He Yi road, rectification circuit, described power circuit is counted measuring control circuit with table respectively, TWACS communication board (8) is connected and carries out power supply supply with relay (6), described relay (6) is provided with signal cable and is connected with table meter measuring control circuit by it, between described TWACS communication board (8) and table meter measuring control circuit, carry out UART serial communication by flat wire, described detection button (71) is arranged on the side of logic card (7).

2. ansi standard S-type structure single-phase electric energy meter according to claim 1, is characterized in that: described power circuit is connected and carries out power supply supply with TWACS communication board (8) by flat wire.

3. ansi standard S-type structure single-phase electric energy meter according to claim 1, is characterized in that: the socket of described TWACS communication board (8) is selected cattle horn socket form.

4. ansi standard S-type structure single-phase electric energy meter according to claim 1, it is characterized in that: two current transformers (5) and two relays (6) are installed on described base (1), and the alternative arrangement that each described relay (6) is relative goes up and is connected with current transformer (5) respectively at base (1).

5. ansi standard S-type structure single-phase electric energy meter according to claim 1, it is characterized in that: two current transformers (5) and a relay (6) are installed on described base (1), a current bar (9) is also installed, and what described relay (6) was staggered with current bar (9) is arranged in base (1) above and is connected with current transformer (5) respectively.