Electrical energy meter photohead universal adaptor

Abstract

The invention discloses a photoelectric head movable support which is not easy to fall off, has stable installation, is convenient to use and has strong versatility. The invention comprises a bracket main body (1), a left side plate (2), a right side plate (3), a buckle plate (4), and the left side plate (2) and the left end of the bracket main body (1) pass through a shaft inner spring (7 ) phase rotation connection, the bracket main body (1) is provided with an optical path opening (10), the bracket main body (1) is embedded with an adsorption iron plate (6), and the back of the bracket main body (1) is provided with two rows of locking sawtooth (11 ), there is a chute (40) in the middle of the buckle plate (4), the buckle plate (4) is sleeved on the bracket body (1) through the chute (40), and the bottom of the chute (40) is provided with a jagged rib (43), the protruding edge (43) is clamped with the locking sawtooth (11), the right side plate (3) is rotationally connected with the bottom of the buckle plate (4) and when the right side plate (3) is rotated to the limit position The included angle between its inner surface and the back of the bracket main body (1) is 90°. It can be widely used in the field of electric meter calibration.

Description

technical field [0001] The invention relates to a photoelectric head movable bracket. Background technique [0002] According to the international electrotechnical standard IEC60687-1992 "ALTERNATING CURRENTSTATIC WATT-HOUR METERS FOR ACTIVE ENERGY (CLASSES 0.2SAND 0.5S)" and the national standard GB / T17883-1999 "0.2S and 0.5S static AC active watt-hour meter technical standards ", the constant of the electric energy meter is defined as the number of photoelectric pulses emitted per kilowatt-hour of electricity. For example, the meter constant is 5000, which means that 5000 photoelectric pulses are issued per kilowatt-hour, which can be calculated by counting the photoelectric pulses. through power. In practical application, the photoelectric pulse is emitted by the light-emitting diode in the electric meter. The light-emitting diode can be designed at any position on the electric surface panel. Outside the electric energy meter, the photoelectric pulse is detected by the c...

AI Technical Summary

Problems solved by technology

However, the following problems exist in the current calibration process with photoelectric heads: the positions of the light-emitting diodes that emit photoelectric pulses of various electric energy meters are not uniform on the electric energy surface plate, so it is difficult to verify that the bracket of the photoelectric head needs to adapt to a variety of electric energy meters; In the process of calibration, the attachment method of the calibration photoelectric head on the electric surface plate is not uniform, which brings difficulties to the fixing of the photoelectric head; the width of different types of electric meters is different, so it is difficult to use a bracket of uniform size to adapt to different The width of the meter, this situation makes it very inconvenient to check the meter with a photoelectric head

[0003] In response to the above situation, domestic and foreign manufacturers have proposed various solutions. The common point is to provide a universal bracket that can be used for the installation of various electric meters and used to calibrate the photoelectric head. However, these brackets generally have insufficient elasticity and are easy to Disadvantages of falling off and inconvenient use, the use effect is not satisfactory

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