CN207408580U - For detecting the instrument of single-phase intelligent electric energy meter calibrating assembly line epitope contact performance - Google Patents

Abstract

The utility model relates to an instrument for detecting the contact performance of a single-phase intelligent electric energy meter for verifying the surface position of an assembly line. The first detection hole corresponding to the current input port, the second detection hole corresponding to the voltage and current output port of the single-phase smart energy meter, the third detection hole corresponding to the common ground input port of the single-phase smart energy meter and The fourth detection hole corresponding to the output port of the common ground terminal of the single-phase smart energy meter, the first detection hole, the second detection hole, the third detection hole and the fourth detection hole are all equipped with pressure sensors and temperature sensors. The utility model greatly facilitates the power company to regularly test the contact reliability of each single-phase intelligent electric energy meter verification assembly line of the electric energy meter assembly line, ensuring the reliability of the working performance of the single-phase intelligent electric energy meter assembly line.

Description

An instrument for detecting the contact performance of a single-phase smart energy meter verification assembly line meter position

technical field

The utility model relates to a detection device for an electric energy meter, in particular to an instrument for detecting the contact performance of a single-phase intelligent electric energy meter verification assembly line.

Background technique

Electric energy meters are measuring instruments that must be calibrated by the state. The national and electric power industry verification regulations stipulate that the newly purchased electric energy meters must be verified for the first time. Facing a large number of tested electric meters, it is necessary to improve the verification efficiency and ensure the verification. Quality, for this reason, the State Grid Corporation requires each province’s electric energy metering center to establish a high-load, uninterrupted operation of large-scale intelligent electric energy meter automatic verification assembly line, to realize the centralized scale verification of intelligent electric energy meters, especially the automation of single-phase intelligent electric energy meters There are a lot of test points in the verification assembly line. Generally, the total number of test positions in the automatic verification line of single-phase smart energy meters is 800-1500. During the verification, the electric energy meter and the assembly line are connected by elastic pins, especially the voltage and current pins. Due to the high voltage and large current, the contact time is long during the test, and all the epitopes have to be repeatedly crimped dozens of times a day. Due to the mechanical fatigue characteristics of the elastic pins, long-term operation will inevitably cause the elasticity of some epitope pins. The phenomenon of early weakening will cause the contact pressure between the meter position pin and the electric energy meter to become smaller under the working condition of large current, which will cause the temperature of the contact point to rise sharply, which will cause the verification result of the electric energy meter to be unqualified and the verification line of the electric energy meter. various failures.

Since the electric energy meter assembly line is responsible for the centralized verification of all electric energy meters in various provinces, the workload of verifying electric energy meters every day is huge. In order to ensure the stable operation of the electric energy meter verification assembly line, the electric power company should regularly conduct periodic inspections on the electric energy meter automatic verification assembly line. And on the basis of the existing verification content during the period, the work on the reliability of epitope contact was gradually carried out, reflecting the universality of contact performance testing. Since the automatic assembly line of electric energy meters has only appeared in recent years, it is a new type of automatic verification system for electric energy meters. There is no simple and reliable detection method for contact reliability detection, which brings a lot of inconvenience to the daily operation and inspection of the electric power metering department. It is a matter of concern to those skilled in the art to regularly detect the pressure value and temperature value of each meter, and to perform early warning or alarm for maintenance work, so as to effectively ensure the operation stability of the automatic verification pipeline of electric energy meters.

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the purpose of this utility model is to provide an instrument for detecting the contact performance of the single-phase smart electric energy meter verification line, which can effectively solve the problem of single-phase smart electric energy meter verification line. The problem of rapid detection of the pressure and temperature of the contact between the pin and the electric energy meter.

The technical scheme solved by the utility model is an instrument for detecting the contact performance of a single-phase smart electric energy meter for verifying the meter position of an assembly line. The instrument includes a housing on which a display is arranged. The first detection hole corresponding to the voltage and current input port of the smart energy meter, the second detection hole corresponding to the voltage and current output port of the single-phase smart energy meter, and the corresponding to the common ground input port of the single-phase smart energy meter The third detection hole and the fourth detection hole corresponding to the output port of the common ground terminal of the single-phase smart energy meter, the first detection hole, the second detection hole, the third detection hole and the fourth detection hole are all provided with holes for detection A pressure sensor for the contact pressure between the single-phase intelligent electric energy meter assembly line pin and the electric energy meter and a temperature sensor for detecting the contact temperature between the single-phase intelligent electric energy meter assembly line electric energy meter pin and the electric energy meter. A/D converters are respectively arranged in the housing device, microprocessor and storage module, the pressure signal output end of the pressure sensor and the temperature signal output end of the temperature sensor are connected to the input end of the A/D converter, and the output end of the A/D converter is connected to the microprocessor, The microprocessor is respectively connected with the storage module and the display.

The housing is provided with an RS485 communication module connected to the microprocessor, and the communication interface of the RS485 communication module is on the same side as the first detection hole, the second detection hole, the third detection hole and the fourth detection hole.

The utility model is novel and unique in structure, simple and reasonable, easy to produce, low in cost, small in size and light in weight, and does not need manual operations such as wiring and dismantling; the detection result is accurate and scientific; The single-phase smart energy meter is tested for the reliability of the pin contact of the assembly line, which ensures the reliability of the working performance of the single-phase smart energy meter assembly line. It is easy to use, effective, and has good social and economic benefits.

Description of drawings

Fig. 1 is a top view of the housing of the utility model.

Fig. 2 is the front view of the casing of the present invention (detection hole layout).

Fig. 3 is a circuit connection block diagram of the utility model.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1-3, the utility model includes a housing 1, on which a display 2 is arranged, and the sides of the housing 1 are respectively provided with first detection holes corresponding to the voltage and current input ports of the single-phase smart electric energy meter 3. The second detection hole 4 corresponding to the voltage and current output port of the single-phase smart energy meter, the third detection hole 5 corresponding to the common ground input port of the single-phase smart energy meter and the single-phase smart energy meter. The fourth detection hole 6 corresponding to the output port of the common ground terminal, the first detection hole 3, the second detection hole 4, the third detection hole 5 and the fourth detection hole 6 are all provided with a single-phase smart electric energy meter assembly line meter A pressure sensor 8 for the contact pressure between the position pin and the electric energy meter and a temperature sensor 9 for detecting the contact temperature between the position pin of the single-phase smart electric energy meter assembly line and the electric energy meter. The processor and the storage module, the pressure signal output end of the pressure sensor 8 and the temperature signal output end of the temperature sensor 9 are all connected to the input end of the A/D converter, and the output end of the A/D converter is connected to the microprocessor, and the microprocessor The processor is connected to the storage module and the display 2 respectively.

In order to ensure the use effect, the housing 1 is provided with an RS485 communication module connected to the microprocessor, and the communication interface 7 of the RS485 communication module is connected to the first detection hole 3, the second detection hole 4, the third detection hole 5, The fourth detection hole 6 is on the same side.

The position of the communication interface 7 of the RS485 communication module is consistent with the position of the weak current signal pin on the single-phase intelligent electric energy meter verification assembly line position, and the communication interface 7 is connected to the single-phase intelligent electric energy meter verification assembly line position by wired mode. The weak current signal pins of the connected, described RS485 communication module is commercially available product (prior art), as the RS485 communication module that model is MAX485ESA;

The first detection hole 3 , the second detection hole 4 , the third detection hole 5 and the fourth detection hole 6 are all in the shape of a blind hole, and the pressure sensor 8 and the temperature sensor 9 are arranged at the bottom of the blind hole.

The shape and size of the housing are consistent with the shape and size of the single-phase smart watt-hour meter to be tested on the watt-hour meter verification line, and the axis of the first detection hole 3 is consistent with the voltage and current input port of the single-phase smart watt-hour meter to be tested. The axes coincide, the axis of the second detection hole 4 coincides with the axis of the voltage and current output port of the single-phase smart energy meter to be tested, the axis of the third detection hole 5 coincides with the axis of the input port of the common ground terminal of the single-phase smart energy meter to be measured, The axis of the fourth detection hole 6 coincides with the axis of the output port of the common ground terminal of the single-phase smart energy meter to be tested.

The display 2 is arranged on the upper surface of the housing; the display is an LCD display screen and a conventional display module supporting it;

Described microprocessor is commercially available product (prior art), as the processor chip that model is FM3318;

The A/D converter is a commercially available product (prior art), such as an A/D conversion module whose model is AD606.

When the utility model is used, the utility model is installed on the meter position of the verification pipeline for detecting the single-phase smart electric energy meter, and each detection hole of the utility model is pressure-connected with the pins of the verification pipeline meter of the single-phase smart power meter. Then apply the appropriate voltage and current to complete the detection of pressure value and temperature value at the same time, and automatically complete the data storage through the microprocessor and storage module, and view the data through the display, and carry out internal data through the RS485 communication module Reading; the utility model does not need to be manually connected, disconnected and other operations; the detection result is accurate and scientific; it is very convenient for the power company to regularly detect the contact pressure and temperature of the electric energy meter assembly line pin contact pressure and temperature, ensuring single-phase intelligence Reliable operation of the electric energy meter verification line, compared with the prior art, the utility model combines the working principle and structural form of the single-phase intelligent electric energy meter automatic verification line, and proposes a single-phase intelligent electric energy meter appearance that can measure pressure and temperature. The detection instrument can simply, efficiently and scientifically detect the pressure value and contact reliability of each gauge pin of the automatic verification line of the single-phase smart electric energy meter, so as to facilitate the timely detection of weak performance of the automatic verification line of the single-phase smart electric energy meter Epitopes provide a basis for troubleshooting hidden dangers, are easy to use, have good effects, and have good social and economic benefits.

Claims (6)

1. A kind of 1. instrument for being used to detect single-phase intelligent electric energy meter calibrating assembly line epitope contact performance, which is characterized in that the instrument Table includes housing (1), is provided with display (2) on housing (1), housing (1) side is respectively arranged with and single-phase intelligent electric energy meter Corresponding first detection hole (3) of voltage and current input port, the voltage and current output port phase with single-phase intelligent electric energy meter Corresponding second detection hole (4), with corresponding 3rd detection hole (5) of common input port of single-phase intelligent electric energy meter and With corresponding 4th detection hole (6) of common output port of single-phase intelligent electric energy meter, the first detection hole (3), the second inspection It is both provided with to detect single-phase intelligent electric energy meter assembly line table in gaging hole (4), the 3rd detection hole (5) and the 4th detection hole (6) The pressure sensor (8) of position contact pin and electric energy meter contact and for detect single-phase intelligent electric energy meter assembly line epitope contact pin with The temperature sensor (9) of electric energy meter Contact Temperature, housing (1) is interior to be respectively arranged with A/D converter, microprocessor and storage mould Block, the signal output end of pressure sensor (8) and the temperature signal output terminal of temperature sensor (9) are and A/D converter Input terminal be connected, the output terminal of A/D converter is connected with microprocessor, microprocessor respectively with storage module and display (2) it is connected.
2. 2. it is according to claim 1 for detecting the instrument of single-phase intelligent electric energy meter calibrating assembly line epitope contact performance, It is characterized in that, the RS485 communication modules being connected with microprocessor are provided on the housing (1), RS485 communication modules Communication interface (7) and the first detection hole (3), the second detection hole (4), the 3rd detection hole (5), the 4th detection hole (6) homonymy.
3. 3. it is according to claim 2 for detecting the instrument of single-phase intelligent electric energy meter calibrating assembly line epitope contact performance, It is characterized in that, assembly line table is examined and determine in the position of the communication interface (7) of the RS485 communication modules with single-phase intelligent electric energy meter The position of weak electric signal contact pin on position is consistent.
4. 4. it is according to claim 1 for detecting the instrument of single-phase intelligent electric energy meter calibrating assembly line epitope contact performance, It is characterized in that, first detection hole (3), the second detection hole (4), the 3rd detection hole (5) and the 4th detection hole (6) are in Blind hole shape, pressure sensor (8) and temperature sensor (9) are arranged on the bottom of blind hole shape.
5. 5. it is according to claim 1 for detecting the instrument of single-phase intelligent electric energy meter calibrating assembly line epitope contact performance, It is characterized in that, the shape of the single-phase intelligent electric energy meter to be measured on the shape of the housing, size and electric energy meter calibration assembly line Shape, size are consistent, the axis weight of the axis of the first detection hole (3) and single-phase intelligent electric energy meter voltage and current input port to be measured It closes, the axis of the second detection hole (4) is overlapped with the axis of single-phase intelligent electric energy meter voltage and current output port to be measured, the 3rd detection The axis in hole (5) is overlapped with the axis of single-phase intelligent electric energy meter common input port to be measured, the axis of the 4th detection hole (6) It is overlapped with the axis of single-phase intelligent electric energy meter common output port to be measured.
6. 6. it is according to claim 1 for detecting the instrument of single-phase intelligent electric energy meter calibrating assembly line epitope contact performance, It is characterized in that, the display (2) is arranged on the upper surface of housing.