CN219915765U

CN219915765U - Intelligent plug-in measuring unit

Info

Publication number: CN219915765U
Application number: CN202321349606.7U
Authority: CN
Inventors: 许鹏飞; 冯全超; 王学武; 李帅
Original assignee: Shandong Deyuan Electric Power Technology Co ltd
Current assignee: Shandong Deyuan Electric Power Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-10-27
Anticipated expiration: 2033-05-31

Abstract

The utility model provides an intelligence plug-in measuring unit, sets up in the front of circuit breaker main part, including set up in connect the recess in the circuit breaker main part, connect the inside socket that is provided with of recess with circuit breaker main part electricity is connected, and with the measuring unit body that the socket electricity is connected. The measuring unit body comprises a shell, an indicator light plate and a groove, wherein the shell comprises a front cover and a rear cover which are assembled in a butt joint way, and a measuring main board is arranged in the shell; the front cover is of a rectangular structure as a whole, the digging groove is arranged at least on one side of the short side of the front cover, and the digging groove is connected to the front surface of the front cover in a penetrating way; the indicating lamp panel is arranged at the right end of the left side groove of the front cover and is electrically connected with the measuring main board; the rear cover body is provided with a pin arranging jack.

Description

Intelligent plug-in measuring unit

Technical Field

The utility model relates to the technical field of measuring switches, in particular to an intelligent plug-in measuring unit.

Background

The measuring switch is a low-voltage switch electrical appliance with a high-precision current sensor and a measuring module, is generally arranged at the inlet wire of the low-voltage measuring box and is used for replacing the existing common inlet wire switch of the measuring box, and the normal switching-on, switching-off or overload protection function of a distribution line is realized.

Most of measuring switches in the current market are integrated or side-plug type breaker switches, the integrated breaker switches integrate a common breaker, a current sensor and a measuring module and are arranged inside the breaker switches, however, the measuring switches need long-time uninterrupted operation work, and electronic devices inside the measuring switches can send faults through repeated power-off operation each time, so that the measuring result of the measuring module is influenced, and the inaccuracy of the measuring result is caused; the side-plug type breaker switch is connected with the measuring module by the connecting base arranged on the side face of the breaker, so that the whole size of the breaker switch is large, enough space is needed during installation, and the applicability of the breaker switch in a low-voltage metering box is low.

Disclosure of Invention

In order to solve the above problems, the present utility model provides an intelligent plug-in measurement unit.

The technical scheme of the utility model is as follows:

the utility model provides an intelligence plug-in measuring unit, sets up in the front of circuit breaker main part, including set up in connect the recess in the circuit breaker main part, connect the inside socket that is provided with of recess with circuit breaker main part electricity is connected, and with the measuring unit body that the socket electricity is connected.

Further, the measuring unit body comprises a shell, an indicating lamp panel and a groove, wherein the shell comprises a front cover and a rear cover which are assembled in a butt joint way, and a measuring main board is arranged in the shell; the front cover is of a rectangular structure as a whole, the digging groove is arranged at least on one side of the short side of the front cover, and the digging groove is connected to the front surface of the front cover in a penetrating way; the indicating lamp panel is arranged at the right end of the left side groove of the front cover and is electrically connected with the measuring main board; the rear cover body is provided with a pin arranging jack.

Further, the pin header socket comprises a weak current interface and a strong current interface.

Furthermore, the strong electric interface adopts a Pin header of 2×10Pin, and pins 10 and 11 of the Pin header are coupled with an A phase line of a power grid; 7 pins and 14 pins of the pin header are coupled with a B phase line of a power grid; the pins 4 and 17 of the pin header are coupled with a C phase line of a power grid; and the pins 1 and 20 of the pin header are coupled with the N phase line of the power grid.

The front cover is also provided with an external interface, the external interface adopts an 8-core pluggable terminal, and the external interface is electrically connected with the measurement main board.

The measuring main board comprises a current sampling module, a voltage sampling module, a measuring module, a Bluetooth communication module and a driving power circuit, wherein the current sampling module and the voltage sampling module are respectively connected with an analog signal input end of the measuring module, the Bluetooth communication module is connected with a communication output end of the measuring module, and the driving power circuit is connected with a power supply end of the measuring module.

Further, the metering module comprises a band-pass filter and a metering chip, wherein the input end of the band-pass filter is connected with the analog signal input end of the metering module, and the output end of the band-pass filter is electrically connected with the metering chip.

Preferably, the metering chip adopts an ATT7022E chip.

The projection of the groove on the front surface of the front cover is arc-shaped or rectangular.

Optionally, the front joint of circuit breaker body has the protecting sheathing, the protecting sheathing is located the unit body outside of measurationing.

The beneficial effects are that: the utility model relates to an intelligent plug-in measuring unit, which adopts a pluggable structure, is not connected with a power line through an external lead, can be safely taken out from a breaker main body under the condition of no power failure, and does not damage the breaker main body and the measuring unit; after the power supply device is aged due to long-time operation of the measuring unit, maintenance personnel can safely replace the measuring unit, and the operation is simple; meanwhile, the measuring unit filters the collected signals of the current sampling module and the voltage sampling module through the band-pass filter, allows the signals with the specified frequency to pass smoothly, blocks the signals with the useless frequency from passing, and improves the accuracy of the sampled data.

Drawings

FIG. 1 is a diagram of a measurement unit installation structure;

FIG. 2 is a front view of the metrology unit body;

FIG. 3 is a side view of the body of the measurement unit;

FIG. 4 is a rear view of the metrology unit body;

FIG. 5 is a schematic diagram of a measurement motherboard;

1. a breaker main body; 2. a measuring unit body; 21. a front cover; 22 rear cover; 3. digging a groove; 4. an indicator light plate; 5. a weak current interface; 6. a strong electric interface; 7. an external interface.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

Examples

Referring to fig. 1-4, the present embodiment provides an intelligent plug-in measuring unit, which includes a measuring unit body 2 and a measuring motherboard disposed inside the measuring unit body, wherein the measuring unit body 2 is installed inside a socket corresponding to a breaker main body 1, so as to collect electrical parameter information.

Further, the measuring unit body 2 comprises a shell, an indication lamp panel 4 and a groove 3, wherein the shell comprises a front cover 21 and a rear cover 22 which are assembled in a butt joint way, the front cover 21 is of a rectangular structure as a whole, the groove 3 is arranged on one side of the short side of the front cover 21, the groove 3 is connected to the front surface of the front cover 21 in a penetrating way, and the projection of the groove 3 on the front surface of the front cover 21 can be in a circular arc shape or a rectangular shape, so that the measuring unit body 2 can be conveniently grasped by hands; the pilot lamp plate 4 sets up in the right-hand member of groove 3 is scratched in the left side of protecgulum 21, and from the top down includes operation pilot lamp, communication pilot lamp, fault indicator lamp and active and reactive indicator lamp in proper order, and pilot lamp plate 4 is connected with the main board electricity of measurationing, can show the running state of measuring unit body 2.

Further, in order to sample the electrical parameter information of each wiring line of the three-phase power externally connected with the breaker main body 1, the rear cover 22 is provided with a pin arrangement jack, and the pin arrangement jack comprises a weak current interface 5 and a strong current interface 6, wherein the weak current interface 5 adopts 2×8 pins as connecting pieces; the strong electric interface 6 adopts 2×10 pins as a connecting piece, wherein 10 pins and 11 pins of the strong electric interface 6 are coupled with a power grid A phase line, 7 pins and 14 pins are coupled with a power grid B phase line, 4 pins and 17 pins are coupled with a power grid C phase line, 1 pin and 20 pins are coupled with a power grid N phase line, the rest pins are empty pins, a PCB (printed circuit board) is not provided with a bonding pad design, a through hole is not metallized, no pin is arranged at a corresponding position of the connecting piece, and the connecting piece is used for increasing a safety distance and providing insulation performance.

As a specific implementation manner, the measuring unit body 2 is arranged on the front surface of the breaker main body 1, the breaker main body 1 is provided with a plugging groove matched with a pin jack on the rear cover 22, a socket electrically connected with the breaker main body 1 is arranged in the plugging groove, the measuring unit can be mutually plugged with the socket through the weak current interface 5 and the strong current interface 6, and the measuring unit adopts a pluggable structure, is not used for connecting a power line through an external lead, can be safely taken out from the breaker main body 1 under the condition of continuous power failure, and does not damage the breaker main body 1 and the measuring unit, so that the measuring unit is ensured to be aged in a power device, and a maintainer can safely replace the measuring unit, and the operation is simple; meanwhile, the structural size of the original breaker body is not changed, the requirement on the space size during normal installation is met, and the application range is wider and the activity is higher.

The equivalent measuring unit is inserted on the breaker main body 1 and is required to measure and detect the electrical parameter information of the breaker switch, so that a measuring main board is arranged in the measuring unit main body 2, and as shown in fig. 5, the measuring main board comprises a current sampling module, a voltage sampling module, a measuring module, a Bluetooth communication module and a driving power supply circuit, the current sampling module and the voltage sampling module are respectively connected with an analog signal input end of the measuring module, the current sampling module adopts a current transformer as a current sensor, and performs current sampling by connecting the current transformer in a phase line circuit in series and transmits analog quantity signals to the measuring module for processing; the voltage sampling circuit is respectively coupled with the three-phase line circuit through the strong electric interface 6 to sample the voltage, and the voltage sampling value is transmitted to the metering module to carry out statistics. The Bluetooth communication module is connected with the communication output end of the metering module, the Bluetooth communication module can carry out Bluetooth communication with the mobile end of a maintenance person, and the metering module can report and record the acquired current, voltage, frequency, power and other electrical parameter information of the breaker main body 1 through the Bluetooth communication module; the driving power supply circuit is connected with the power supply end of the metering module, is connected with the 12V power supply output pin of the weak current interface 5, and is used for measuring the internal power supply of the main board.

As a specific implementation manner, the metering module comprises a band-pass filter and a metering chip, wherein the metering chip adopts an ATT7022E chip, and can convert received analog quantity signals into digital signals for metering; meanwhile, the input end of the band-pass filter is connected with the analog signal input end of the metering module, the output end of the band-pass filter is electrically connected with the metering chip, collected signals of the current sampling module and the voltage sampling module can be filtered, signals with specified frequencies are allowed to pass smoothly, signals with useless frequencies are blocked from passing, and accuracy of sampled data is improved.

Further, the front cover 21 is further provided with an external interface 7, the external interface 7 adopts an 8-core pluggable terminal, the external interface 7 is electrically connected with the measurement main board, and a maintainer can record active electric energy pulse and reactive electric energy pulse through an external RS485 communication line.

In order to prevent the measuring unit from being bumped by the outside or touching the external wire to cause short circuit, the front of the breaker main body 1 is clamped with a protective shell, and the protective shell is positioned outside the measuring unit body 2, so that the measuring unit body 2 can be externally protected.

Claims

1. The intelligent plug-in measuring unit is arranged on the front face of a breaker main body (1) and is characterized by comprising a plug-in groove arranged on the breaker main body (1), wherein a socket electrically connected with the breaker main body (1) is arranged in the plug-in groove, and a measuring unit body (2) electrically connected with the socket is arranged in the plug-in groove;

the measuring unit body (2) comprises a shell, an indication lamp panel (4) and a digging groove (3), wherein the shell comprises a front cover (21) and a rear cover (22) which are assembled in a involution mode, and a measuring main board is arranged in the shell;

the front cover (21) is of a rectangular structure as a whole, the groove (3) is arranged at least on one side of the short side of the front cover (21), and the groove (3) is connected to the front surface of the front cover (21) in a penetrating way; the indicator lamp panel (4) is arranged at the right end of the left side digging groove (3) of the front cover (21), and the indicator lamp panel (4) is electrically connected with the measuring main board; the rear cover (22) body is provided with a pin header socket;

2. The intelligent plug-in measuring unit according to claim 1, wherein the pin header socket comprises a weak current interface (5) and a strong current interface (6).

3. The intelligent plug-in measuring unit according to claim 2, wherein the strong electric interface (6) adopts a 2 x 10pin header, and 10, 11 pins of the pin header are coupled with an a phase line of a power grid; 7 pins and 14 pins of the pin header are coupled with a B phase line of a power grid; the pins 4 and 17 of the pin header are coupled with a C phase line of a power grid; and the pins 1 and 20 of the pin header are coupled with the N phase line of the power grid.

4. The intelligent pluggable measurement unit according to claim 1, wherein the front cover (21) is further provided with an external interface (7), the external interface (7) adopts an 8-core pluggable terminal, and the external interface (7) is electrically connected with the measurement motherboard.

5. The intelligent pluggable measurement unit of claim 1, wherein the metering module includes a bandpass filter and a metering chip, the bandpass filter input is connected to the analog signal input of the metering module, and the bandpass filter output is electrically connected to the metering chip.

6. The intelligent pluggable measurement unit of claim 5, wherein the metering chip is an ATT7022E chip.

7. The intelligent plug-in measuring unit according to claim 1, wherein the projection of the key groove (3) on the front surface of the front cover (21) is arc-shaped or rectangular.

8. The intelligent plug-in measuring unit according to claim 1, wherein a protective housing is clamped on the front surface of the breaker main body (1), and the protective housing is located on the outer side of the measuring unit body (2).